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f5314dd5 DM |
1 | // sparc.cc -- sparc target support for gold. |
2 | ||
6d03d481 | 3 | // Copyright 2008, 2009 Free Software Foundation, Inc. |
f5314dd5 DM |
4 | // Written by David S. Miller <davem@davemloft.net>. |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
23 | #include "gold.h" | |
24 | ||
25 | #include <cstdlib> | |
26 | #include <cstdio> | |
27 | #include <cstring> | |
28 | ||
29 | #include "elfcpp.h" | |
30 | #include "parameters.h" | |
31 | #include "reloc.h" | |
32 | #include "sparc.h" | |
33 | #include "object.h" | |
34 | #include "symtab.h" | |
35 | #include "layout.h" | |
36 | #include "output.h" | |
12c0daef | 37 | #include "copy-relocs.h" |
f5314dd5 DM |
38 | #include "target.h" |
39 | #include "target-reloc.h" | |
40 | #include "target-select.h" | |
41 | #include "tls.h" | |
42 | #include "errors.h" | |
43 | ||
44 | namespace | |
45 | { | |
46 | ||
47 | using namespace gold; | |
48 | ||
49 | template<int size, bool big_endian> | |
50 | class Output_data_plt_sparc; | |
51 | ||
52 | template<int size, bool big_endian> | |
53 | class Target_sparc : public Sized_target<size, big_endian> | |
54 | { | |
55 | public: | |
56 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
57 | ||
58 | Target_sparc() | |
59 | : Sized_target<size, big_endian>(&sparc_info), | |
60 | got_(NULL), plt_(NULL), rela_dyn_(NULL), | |
12c0daef ILT |
61 | copy_relocs_(elfcpp::R_SPARC_COPY), dynbss_(NULL), |
62 | got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL) | |
f5314dd5 DM |
63 | { |
64 | } | |
65 | ||
6d03d481 ST |
66 | // Process the relocations to determine unreferenced sections for |
67 | // garbage collection. | |
68 | void | |
69 | gc_process_relocs(const General_options& options, | |
70 | Symbol_table* symtab, | |
71 | Layout* layout, | |
72 | Sized_relobj<size, big_endian>* object, | |
73 | unsigned int data_shndx, | |
74 | unsigned int sh_type, | |
75 | const unsigned char* prelocs, | |
76 | size_t reloc_count, | |
77 | Output_section* output_section, | |
78 | bool needs_special_offset_handling, | |
79 | size_t local_symbol_count, | |
80 | const unsigned char* plocal_symbols); | |
81 | ||
f5314dd5 DM |
82 | // Scan the relocations to look for symbol adjustments. |
83 | void | |
84 | scan_relocs(const General_options& options, | |
85 | Symbol_table* symtab, | |
86 | Layout* layout, | |
87 | Sized_relobj<size, big_endian>* object, | |
88 | unsigned int data_shndx, | |
89 | unsigned int sh_type, | |
90 | const unsigned char* prelocs, | |
91 | size_t reloc_count, | |
92 | Output_section* output_section, | |
93 | bool needs_special_offset_handling, | |
94 | size_t local_symbol_count, | |
95 | const unsigned char* plocal_symbols); | |
96 | // Finalize the sections. | |
97 | void | |
98 | do_finalize_sections(Layout*); | |
99 | ||
100 | // Return the value to use for a dynamic which requires special | |
101 | // treatment. | |
102 | uint64_t | |
103 | do_dynsym_value(const Symbol*) const; | |
104 | ||
105 | // Relocate a section. | |
106 | void | |
107 | relocate_section(const Relocate_info<size, big_endian>*, | |
108 | unsigned int sh_type, | |
109 | const unsigned char* prelocs, | |
110 | size_t reloc_count, | |
111 | Output_section* output_section, | |
112 | bool needs_special_offset_handling, | |
113 | unsigned char* view, | |
114 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
115 | section_size_type view_size); | |
116 | ||
117 | // Scan the relocs during a relocatable link. | |
118 | void | |
119 | scan_relocatable_relocs(const General_options& options, | |
120 | Symbol_table* symtab, | |
121 | Layout* layout, | |
122 | Sized_relobj<size, big_endian>* object, | |
123 | unsigned int data_shndx, | |
124 | unsigned int sh_type, | |
125 | const unsigned char* prelocs, | |
126 | size_t reloc_count, | |
127 | Output_section* output_section, | |
128 | bool needs_special_offset_handling, | |
129 | size_t local_symbol_count, | |
130 | const unsigned char* plocal_symbols, | |
131 | Relocatable_relocs*); | |
132 | ||
133 | // Relocate a section during a relocatable link. | |
134 | void | |
135 | relocate_for_relocatable(const Relocate_info<size, big_endian>*, | |
136 | unsigned int sh_type, | |
137 | const unsigned char* prelocs, | |
138 | size_t reloc_count, | |
139 | Output_section* output_section, | |
140 | off_t offset_in_output_section, | |
141 | const Relocatable_relocs*, | |
142 | unsigned char* view, | |
143 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
144 | section_size_type view_size, | |
145 | unsigned char* reloc_view, | |
146 | section_size_type reloc_view_size); | |
147 | // Return whether SYM is defined by the ABI. | |
148 | bool | |
9c2d0ef9 | 149 | do_is_defined_by_abi(const Symbol* sym) const |
f5314dd5 DM |
150 | { |
151 | // XXX Really need to support this better... | |
152 | if (sym->type() == elfcpp::STT_SPARC_REGISTER) | |
153 | return 1; | |
154 | ||
155 | return strcmp(sym->name(), "___tls_get_addr") == 0; | |
156 | } | |
157 | ||
9efe6174 ILT |
158 | // Return whether there is a GOT section. |
159 | bool | |
160 | has_got_section() const | |
161 | { return this->got_ != NULL; } | |
162 | ||
f5314dd5 DM |
163 | // Return the size of the GOT section. |
164 | section_size_type | |
165 | got_size() | |
166 | { | |
167 | gold_assert(this->got_ != NULL); | |
168 | return this->got_->data_size(); | |
169 | } | |
170 | ||
171 | private: | |
172 | ||
173 | // The class which scans relocations. | |
32b769e1 | 174 | class Scan |
f5314dd5 | 175 | { |
32b769e1 DM |
176 | public: |
177 | Scan() | |
178 | : issued_non_pic_error_(false) | |
179 | { } | |
180 | ||
f5314dd5 DM |
181 | inline void |
182 | local(const General_options& options, Symbol_table* symtab, | |
183 | Layout* layout, Target_sparc* target, | |
184 | Sized_relobj<size, big_endian>* object, | |
185 | unsigned int data_shndx, | |
186 | Output_section* output_section, | |
187 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
188 | const elfcpp::Sym<size, big_endian>& lsym); | |
189 | ||
190 | inline void | |
191 | global(const General_options& options, Symbol_table* symtab, | |
192 | Layout* layout, Target_sparc* target, | |
193 | Sized_relobj<size, big_endian>* object, | |
194 | unsigned int data_shndx, | |
195 | Output_section* output_section, | |
196 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
197 | Symbol* gsym); | |
198 | ||
32b769e1 | 199 | private: |
f5314dd5 DM |
200 | static void |
201 | unsupported_reloc_local(Sized_relobj<size, big_endian>*, | |
202 | unsigned int r_type); | |
203 | ||
204 | static void | |
205 | unsupported_reloc_global(Sized_relobj<size, big_endian>*, | |
206 | unsigned int r_type, Symbol*); | |
207 | ||
208 | static void | |
209 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
210 | Target_sparc* target); | |
32b769e1 DM |
211 | |
212 | void | |
213 | check_non_pic(Relobj*, unsigned int r_type); | |
214 | ||
215 | // Whether we have issued an error about a non-PIC compilation. | |
216 | bool issued_non_pic_error_; | |
f5314dd5 DM |
217 | }; |
218 | ||
219 | // The class which implements relocation. | |
220 | class Relocate | |
221 | { | |
222 | public: | |
223 | Relocate() | |
224 | : ignore_gd_add_(false) | |
225 | { } | |
226 | ||
227 | ~Relocate() | |
228 | { | |
229 | if (this->ignore_gd_add_) | |
230 | { | |
231 | // FIXME: This needs to specify the location somehow. | |
232 | gold_error(_("missing expected TLS relocation")); | |
233 | } | |
234 | } | |
235 | ||
236 | // Do a relocation. Return false if the caller should not issue | |
237 | // any warnings about this relocation. | |
238 | inline bool | |
239 | relocate(const Relocate_info<size, big_endian>*, Target_sparc*, | |
031cdbed ILT |
240 | Output_section*, size_t relnum, |
241 | const elfcpp::Rela<size, big_endian>&, | |
f5314dd5 DM |
242 | unsigned int r_type, const Sized_symbol<size>*, |
243 | const Symbol_value<size>*, | |
244 | unsigned char*, | |
245 | typename elfcpp::Elf_types<size>::Elf_Addr, | |
246 | section_size_type); | |
247 | ||
248 | private: | |
249 | // Do a TLS relocation. | |
250 | inline void | |
251 | relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target, | |
252 | size_t relnum, const elfcpp::Rela<size, big_endian>&, | |
253 | unsigned int r_type, const Sized_symbol<size>*, | |
254 | const Symbol_value<size>*, | |
255 | unsigned char*, | |
256 | typename elfcpp::Elf_types<size>::Elf_Addr, | |
257 | section_size_type); | |
258 | ||
259 | // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD | |
260 | bool ignore_gd_add_; | |
261 | }; | |
262 | ||
263 | // A class which returns the size required for a relocation type, | |
264 | // used while scanning relocs during a relocatable link. | |
265 | class Relocatable_size_for_reloc | |
266 | { | |
267 | public: | |
268 | unsigned int | |
269 | get_size_for_reloc(unsigned int, Relobj*); | |
270 | }; | |
271 | ||
272 | // Get the GOT section, creating it if necessary. | |
273 | Output_data_got<size, big_endian>* | |
274 | got_section(Symbol_table*, Layout*); | |
275 | ||
276 | // Create a PLT entry for a global symbol. | |
277 | void | |
278 | make_plt_entry(Symbol_table*, Layout*, Symbol*); | |
279 | ||
280 | // Create a GOT entry for the TLS module index. | |
281 | unsigned int | |
282 | got_mod_index_entry(Symbol_table* symtab, Layout* layout, | |
283 | Sized_relobj<size, big_endian>* object); | |
284 | ||
285 | // Return the gsym for "__tls_get_addr". Cache if not already | |
286 | // cached. | |
287 | Symbol* | |
288 | tls_get_addr_sym(Symbol_table* symtab) | |
289 | { | |
290 | if (!this->tls_get_addr_sym_) | |
291 | this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL); | |
292 | gold_assert(this->tls_get_addr_sym_); | |
293 | return this->tls_get_addr_sym_; | |
294 | } | |
295 | ||
296 | // Get the PLT section. | |
297 | const Output_data_plt_sparc<size, big_endian>* | |
298 | plt_section() const | |
299 | { | |
300 | gold_assert(this->plt_ != NULL); | |
301 | return this->plt_; | |
302 | } | |
303 | ||
304 | // Get the dynamic reloc section, creating it if necessary. | |
305 | Reloc_section* | |
306 | rela_dyn_section(Layout*); | |
307 | ||
f5314dd5 DM |
308 | // Copy a relocation against a global symbol. |
309 | void | |
ef9beddf ILT |
310 | copy_reloc(Symbol_table* symtab, Layout* layout, |
311 | Sized_relobj<size, big_endian>* object, | |
12c0daef ILT |
312 | unsigned int shndx, Output_section* output_section, |
313 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
314 | { | |
315 | this->copy_relocs_.copy_reloc(symtab, layout, | |
316 | symtab->get_sized_symbol<size>(sym), | |
317 | object, shndx, output_section, | |
318 | reloc, this->rela_dyn_section(layout)); | |
319 | } | |
f5314dd5 DM |
320 | |
321 | // Information about this specific target which we pass to the | |
322 | // general Target structure. | |
323 | static Target::Target_info sparc_info; | |
324 | ||
325 | // The types of GOT entries needed for this platform. | |
326 | enum Got_type | |
327 | { | |
328 | GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol | |
329 | GOT_TYPE_TLS_OFFSET = 1, // GOT entry for TLS offset | |
330 | GOT_TYPE_TLS_PAIR = 2, // GOT entry for TLS module/offset pair | |
331 | }; | |
332 | ||
333 | // The GOT section. | |
334 | Output_data_got<size, big_endian>* got_; | |
335 | // The PLT section. | |
336 | Output_data_plt_sparc<size, big_endian>* plt_; | |
337 | // The dynamic reloc section. | |
338 | Reloc_section* rela_dyn_; | |
339 | // Relocs saved to avoid a COPY reloc. | |
12c0daef | 340 | Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; |
f5314dd5 DM |
341 | // Space for variables copied with a COPY reloc. |
342 | Output_data_space* dynbss_; | |
343 | // Offset of the GOT entry for the TLS module index; | |
344 | unsigned int got_mod_index_offset_; | |
345 | // Cached pointer to __tls_get_addr symbol | |
346 | Symbol* tls_get_addr_sym_; | |
347 | }; | |
348 | ||
349 | template<> | |
350 | Target::Target_info Target_sparc<32, true>::sparc_info = | |
351 | { | |
352 | 32, // size | |
353 | true, // is_big_endian | |
354 | elfcpp::EM_SPARC, // machine_code | |
355 | false, // has_make_symbol | |
356 | false, // has_resolve | |
357 | false, // has_code_fill | |
358 | true, // is_default_stack_executable | |
359 | '\0', // wrap_char | |
360 | "/usr/lib/ld.so.1", // dynamic_linker | |
361 | 0x00010000, // default_text_segment_address | |
362 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 ILT |
363 | 8 * 1024, // common_pagesize (overridable by -z common-page-size) |
364 | elfcpp::SHN_UNDEF, // small_common_shndx | |
365 | elfcpp::SHN_UNDEF, // large_common_shndx | |
366 | 0, // small_common_section_flags | |
367 | 0 // large_common_section_flags | |
f5314dd5 DM |
368 | }; |
369 | ||
370 | template<> | |
371 | Target::Target_info Target_sparc<64, true>::sparc_info = | |
372 | { | |
373 | 64, // size | |
374 | true, // is_big_endian | |
375 | elfcpp::EM_SPARCV9, // machine_code | |
376 | false, // has_make_symbol | |
377 | false, // has_resolve | |
378 | false, // has_code_fill | |
379 | true, // is_default_stack_executable | |
380 | '\0', // wrap_char | |
381 | "/usr/lib/sparcv9/ld.so.1", // dynamic_linker | |
382 | 0x100000, // default_text_segment_address | |
383 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 ILT |
384 | 8 * 1024, // common_pagesize (overridable by -z common-page-size) |
385 | elfcpp::SHN_UNDEF, // small_common_shndx | |
386 | elfcpp::SHN_UNDEF, // large_common_shndx | |
387 | 0, // small_common_section_flags | |
388 | 0 // large_common_section_flags | |
f5314dd5 DM |
389 | }; |
390 | ||
391 | // We have to take care here, even when operating in little-endian | |
392 | // mode, sparc instructions are still big endian. | |
393 | template<int size, bool big_endian> | |
394 | class Sparc_relocate_functions | |
395 | { | |
396 | private: | |
397 | // Do a simple relocation with the addend in the relocation. | |
398 | template<int valsize> | |
399 | static inline void | |
400 | rela(unsigned char* view, | |
401 | unsigned int right_shift, | |
402 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
403 | typename elfcpp::Swap<size, big_endian>::Valtype value, | |
404 | typename elfcpp::Swap<size, big_endian>::Valtype addend) | |
405 | { | |
406 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
407 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
408 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
409 | Valtype reloc = ((value + addend) >> right_shift); | |
410 | ||
411 | val &= ~dst_mask; | |
412 | reloc &= dst_mask; | |
413 | ||
414 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
415 | } | |
416 | ||
417 | // Do a simple relocation using a symbol value with the addend in | |
418 | // the relocation. | |
419 | template<int valsize> | |
420 | static inline void | |
421 | rela(unsigned char* view, | |
422 | unsigned int right_shift, | |
423 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
424 | const Sized_relobj<size, big_endian>* object, | |
425 | const Symbol_value<size>* psymval, | |
426 | typename elfcpp::Swap<valsize, big_endian>::Valtype addend) | |
427 | { | |
428 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
429 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
430 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
431 | Valtype reloc = (psymval->value(object, addend) >> right_shift); | |
432 | ||
433 | val &= ~dst_mask; | |
434 | reloc &= dst_mask; | |
435 | ||
436 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
437 | } | |
438 | ||
439 | // Do a simple relocation using a symbol value with the addend in | |
440 | // the relocation, unaligned. | |
441 | template<int valsize> | |
442 | static inline void | |
443 | rela_ua(unsigned char* view, | |
444 | unsigned int right_shift, elfcpp::Elf_Xword dst_mask, | |
445 | const Sized_relobj<size, big_endian>* object, | |
446 | const Symbol_value<size>* psymval, | |
447 | typename elfcpp::Swap<size, big_endian>::Valtype addend) | |
448 | { | |
449 | typedef typename elfcpp::Swap_unaligned<valsize, | |
450 | big_endian>::Valtype Valtype; | |
451 | unsigned char* wv = view; | |
452 | Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv); | |
453 | Valtype reloc = (psymval->value(object, addend) >> right_shift); | |
454 | ||
455 | val &= ~dst_mask; | |
456 | reloc &= dst_mask; | |
457 | ||
458 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc); | |
459 | } | |
460 | ||
461 | // Do a simple PC relative relocation with a Symbol_value with the | |
462 | // addend in the relocation. | |
463 | template<int valsize> | |
464 | static inline void | |
465 | pcrela(unsigned char* view, | |
466 | unsigned int right_shift, | |
467 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
468 | const Sized_relobj<size, big_endian>* object, | |
469 | const Symbol_value<size>* psymval, | |
470 | typename elfcpp::Swap<size, big_endian>::Valtype addend, | |
471 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
472 | { | |
473 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
474 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
475 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
476 | Valtype reloc = ((psymval->value(object, addend) - address) | |
477 | >> right_shift); | |
478 | ||
479 | val &= ~dst_mask; | |
480 | reloc &= dst_mask; | |
481 | ||
482 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
483 | } | |
484 | ||
485 | template<int valsize> | |
486 | static inline void | |
487 | pcrela_unaligned(unsigned char* view, | |
488 | const Sized_relobj<size, big_endian>* object, | |
489 | const Symbol_value<size>* psymval, | |
490 | typename elfcpp::Swap<size, big_endian>::Valtype addend, | |
491 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
492 | { | |
493 | typedef typename elfcpp::Swap_unaligned<valsize, | |
494 | big_endian>::Valtype Valtype; | |
495 | unsigned char* wv = view; | |
496 | Valtype reloc = (psymval->value(object, addend) - address); | |
497 | ||
498 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc); | |
499 | } | |
500 | ||
501 | typedef Sparc_relocate_functions<size, big_endian> This; | |
502 | typedef Sparc_relocate_functions<size, true> This_insn; | |
503 | ||
504 | public: | |
505 | // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2 | |
506 | static inline void | |
507 | wdisp30(unsigned char* view, | |
508 | const Sized_relobj<size, big_endian>* object, | |
509 | const Symbol_value<size>* psymval, | |
510 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
511 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
512 | { | |
513 | This_insn::template pcrela<32>(view, 2, 0x3fffffff, object, | |
514 | psymval, addend, address); | |
515 | } | |
516 | ||
517 | // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2 | |
518 | static inline void | |
519 | wdisp22(unsigned char* view, | |
520 | const Sized_relobj<size, big_endian>* object, | |
521 | const Symbol_value<size>* psymval, | |
522 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
523 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
524 | { | |
525 | This_insn::template pcrela<32>(view, 2, 0x003fffff, object, | |
526 | psymval, addend, address); | |
527 | } | |
528 | ||
529 | // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2 | |
530 | static inline void | |
531 | wdisp19(unsigned char* view, | |
532 | const Sized_relobj<size, big_endian>* object, | |
533 | const Symbol_value<size>* psymval, | |
534 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
535 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
536 | { | |
537 | This_insn::template pcrela<32>(view, 2, 0x0007ffff, object, | |
538 | psymval, addend, address); | |
539 | } | |
540 | ||
541 | // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2 | |
542 | static inline void | |
543 | wdisp16(unsigned char* view, | |
544 | const Sized_relobj<size, big_endian>* object, | |
545 | const Symbol_value<size>* psymval, | |
546 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
547 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
548 | { | |
549 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
550 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
551 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
552 | Valtype reloc = ((psymval->value(object, addend) - address) | |
553 | >> 2); | |
554 | ||
555 | // The relocation value is split between the low 14 bits, | |
556 | // and bits 20-21. | |
557 | val &= ~((0x3 << 20) | 0x3fff); | |
558 | reloc = (((reloc & 0xc000) << (20 - 14)) | |
559 | | (reloc & 0x3ffff)); | |
560 | ||
561 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
562 | } | |
563 | ||
564 | // R_SPARC_PC22: (Symbol + Addend - Address) >> 10 | |
565 | static inline void | |
566 | pc22(unsigned char* view, | |
567 | const Sized_relobj<size, big_endian>* object, | |
568 | const Symbol_value<size>* psymval, | |
569 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
570 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
571 | { | |
572 | This_insn::template pcrela<32>(view, 10, 0x003fffff, object, | |
573 | psymval, addend, address); | |
574 | } | |
575 | ||
576 | // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff | |
577 | static inline void | |
578 | pc10(unsigned char* view, | |
579 | const Sized_relobj<size, big_endian>* object, | |
580 | const Symbol_value<size>* psymval, | |
581 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
582 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
583 | { | |
584 | This_insn::template pcrela<32>(view, 0, 0x000003ff, object, | |
585 | psymval, addend, address); | |
586 | } | |
587 | ||
588 | // R_SPARC_HI22: (Symbol + Addend) >> 10 | |
589 | static inline void | |
590 | hi22(unsigned char* view, | |
591 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
592 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
593 | { | |
594 | This_insn::template rela<32>(view, 10, 0x003fffff, value, addend); | |
595 | } | |
596 | ||
597 | // R_SPARC_HI22: (Symbol + Addend) >> 10 | |
598 | static inline void | |
599 | hi22(unsigned char* view, | |
600 | const Sized_relobj<size, big_endian>* object, | |
601 | const Symbol_value<size>* psymval, | |
602 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
603 | { | |
604 | This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend); | |
605 | } | |
606 | ||
607 | // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10 | |
608 | static inline void | |
609 | pcplt22(unsigned char* view, | |
610 | const Sized_relobj<size, big_endian>* object, | |
611 | const Symbol_value<size>* psymval, | |
612 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
613 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
614 | { | |
615 | This_insn::template pcrela<32>(view, 10, 0x003fffff, object, | |
616 | psymval, addend, address); | |
617 | } | |
618 | ||
619 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
620 | static inline void | |
621 | lo10(unsigned char* view, | |
622 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
623 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
624 | { | |
625 | This_insn::template rela<32>(view, 0, 0x000003ff, value, addend); | |
626 | } | |
627 | ||
628 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
629 | static inline void | |
630 | lo10(unsigned char* view, | |
631 | const Sized_relobj<size, big_endian>* object, | |
632 | const Symbol_value<size>* psymval, | |
633 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
634 | { | |
635 | This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend); | |
636 | } | |
637 | ||
638 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
639 | static inline void | |
640 | lo10(unsigned char* view, | |
641 | const Sized_relobj<size, big_endian>* object, | |
642 | const Symbol_value<size>* psymval, | |
643 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
644 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
645 | { | |
646 | This_insn::template pcrela<32>(view, 0, 0x000003ff, object, | |
647 | psymval, addend, address); | |
648 | } | |
649 | ||
650 | // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2 | |
651 | static inline void | |
652 | olo10(unsigned char* view, | |
653 | const Sized_relobj<size, big_endian>* object, | |
654 | const Symbol_value<size>* psymval, | |
655 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
656 | typename elfcpp::Elf_types<size>::Elf_Addr addend2) | |
657 | { | |
658 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
659 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
660 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
661 | Valtype reloc = psymval->value(object, addend); | |
662 | ||
663 | val &= ~0x1fff; | |
664 | reloc &= 0x3ff; | |
665 | reloc += addend2; | |
666 | reloc &= 0x1fff; | |
667 | ||
668 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
669 | } | |
670 | ||
671 | // R_SPARC_22: (Symbol + Addend) | |
672 | static inline void | |
673 | rela32_22(unsigned char* view, | |
674 | const Sized_relobj<size, big_endian>* object, | |
675 | const Symbol_value<size>* psymval, | |
676 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
677 | { | |
678 | This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend); | |
679 | } | |
680 | ||
681 | // R_SPARC_13: (Symbol + Addend) | |
682 | static inline void | |
683 | rela32_13(unsigned char* view, | |
684 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
685 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
686 | { | |
687 | This_insn::template rela<32>(view, 0, 0x00001fff, value, addend); | |
688 | } | |
689 | ||
690 | // R_SPARC_13: (Symbol + Addend) | |
691 | static inline void | |
692 | rela32_13(unsigned char* view, | |
693 | const Sized_relobj<size, big_endian>* object, | |
694 | const Symbol_value<size>* psymval, | |
695 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
696 | { | |
697 | This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend); | |
698 | } | |
699 | ||
700 | // R_SPARC_UA16: (Symbol + Addend) | |
701 | static inline void | |
702 | ua16(unsigned char* view, | |
703 | const Sized_relobj<size, big_endian>* object, | |
704 | const Symbol_value<size>* psymval, | |
705 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
706 | { | |
707 | This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend); | |
708 | } | |
709 | ||
710 | // R_SPARC_UA32: (Symbol + Addend) | |
711 | static inline void | |
712 | ua32(unsigned char* view, | |
713 | const Sized_relobj<size, big_endian>* object, | |
714 | const Symbol_value<size>* psymval, | |
715 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
716 | { | |
717 | This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend); | |
718 | } | |
719 | ||
720 | // R_SPARC_UA64: (Symbol + Addend) | |
721 | static inline void | |
722 | ua64(unsigned char* view, | |
723 | const Sized_relobj<size, big_endian>* object, | |
724 | const Symbol_value<size>* psymval, | |
725 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
726 | { | |
727 | This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0, | |
728 | object, psymval, addend); | |
729 | } | |
730 | ||
731 | // R_SPARC_DISP8: (Symbol + Addend - Address) | |
732 | static inline void | |
733 | disp8(unsigned char* view, | |
734 | const Sized_relobj<size, big_endian>* object, | |
735 | const Symbol_value<size>* psymval, | |
736 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
737 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
738 | { | |
739 | This::template pcrela_unaligned<8>(view, object, psymval, | |
740 | addend, address); | |
741 | } | |
742 | ||
743 | // R_SPARC_DISP16: (Symbol + Addend - Address) | |
744 | static inline void | |
745 | disp16(unsigned char* view, | |
746 | const Sized_relobj<size, big_endian>* object, | |
747 | const Symbol_value<size>* psymval, | |
748 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
749 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
750 | { | |
751 | This::template pcrela_unaligned<16>(view, object, psymval, | |
752 | addend, address); | |
753 | } | |
754 | ||
755 | // R_SPARC_DISP32: (Symbol + Addend - Address) | |
756 | static inline void | |
757 | disp32(unsigned char* view, | |
758 | const Sized_relobj<size, big_endian>* object, | |
759 | const Symbol_value<size>* psymval, | |
760 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
761 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
762 | { | |
763 | This::template pcrela_unaligned<32>(view, object, psymval, | |
764 | addend, address); | |
765 | } | |
766 | ||
767 | // R_SPARC_DISP64: (Symbol + Addend - Address) | |
768 | static inline void | |
769 | disp64(unsigned char* view, | |
770 | const Sized_relobj<size, big_endian>* object, | |
771 | const Symbol_value<size>* psymval, | |
772 | elfcpp::Elf_Xword addend, | |
773 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
774 | { | |
775 | This::template pcrela_unaligned<64>(view, object, psymval, | |
776 | addend, address); | |
777 | } | |
778 | ||
779 | // R_SPARC_H44: (Symbol + Addend) >> 22 | |
780 | static inline void | |
781 | h44(unsigned char* view, | |
782 | const Sized_relobj<size, big_endian>* object, | |
783 | const Symbol_value<size>* psymval, | |
784 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
785 | { | |
786 | This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend); | |
787 | } | |
788 | ||
789 | // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff | |
790 | static inline void | |
791 | m44(unsigned char* view, | |
792 | const Sized_relobj<size, big_endian>* object, | |
793 | const Symbol_value<size>* psymval, | |
794 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
795 | { | |
796 | This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend); | |
797 | } | |
798 | ||
799 | // R_SPARC_L44: (Symbol + Addend) & 0xfff | |
800 | static inline void | |
801 | l44(unsigned char* view, | |
802 | const Sized_relobj<size, big_endian>* object, | |
803 | const Symbol_value<size>* psymval, | |
804 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
805 | { | |
806 | This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend); | |
807 | } | |
808 | ||
809 | // R_SPARC_HH22: (Symbol + Addend) >> 42 | |
810 | static inline void | |
811 | hh22(unsigned char* view, | |
812 | const Sized_relobj<size, big_endian>* object, | |
813 | const Symbol_value<size>* psymval, | |
814 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
815 | { | |
816 | This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend); | |
817 | } | |
818 | ||
819 | // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42 | |
820 | static inline void | |
821 | pc_hh22(unsigned char* view, | |
822 | const Sized_relobj<size, big_endian>* object, | |
823 | const Symbol_value<size>* psymval, | |
824 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
825 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
826 | { | |
827 | This_insn::template pcrela<32>(view, 42, 0x003fffff, object, | |
828 | psymval, addend, address); | |
829 | } | |
830 | ||
831 | // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff | |
832 | static inline void | |
833 | hm10(unsigned char* view, | |
834 | const Sized_relobj<size, big_endian>* object, | |
835 | const Symbol_value<size>* psymval, | |
836 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
837 | { | |
838 | This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend); | |
839 | } | |
840 | ||
841 | // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff | |
842 | static inline void | |
843 | pc_hm10(unsigned char* view, | |
844 | const Sized_relobj<size, big_endian>* object, | |
845 | const Symbol_value<size>* psymval, | |
846 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
847 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
848 | { | |
849 | This_insn::template pcrela<32>(view, 32, 0x000003ff, object, | |
850 | psymval, addend, address); | |
851 | } | |
852 | ||
853 | // R_SPARC_11: (Symbol + Addend) | |
854 | static inline void | |
855 | rela32_11(unsigned char* view, | |
856 | const Sized_relobj<size, big_endian>* object, | |
857 | const Symbol_value<size>* psymval, | |
858 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
859 | { | |
860 | This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend); | |
861 | } | |
862 | ||
863 | // R_SPARC_10: (Symbol + Addend) | |
864 | static inline void | |
865 | rela32_10(unsigned char* view, | |
866 | const Sized_relobj<size, big_endian>* object, | |
867 | const Symbol_value<size>* psymval, | |
868 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
869 | { | |
870 | This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend); | |
871 | } | |
872 | ||
873 | // R_SPARC_7: (Symbol + Addend) | |
874 | static inline void | |
875 | rela32_7(unsigned char* view, | |
876 | const Sized_relobj<size, big_endian>* object, | |
877 | const Symbol_value<size>* psymval, | |
878 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
879 | { | |
880 | This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend); | |
881 | } | |
882 | ||
883 | // R_SPARC_6: (Symbol + Addend) | |
884 | static inline void | |
885 | rela32_6(unsigned char* view, | |
886 | const Sized_relobj<size, big_endian>* object, | |
887 | const Symbol_value<size>* psymval, | |
888 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
889 | { | |
890 | This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend); | |
891 | } | |
892 | ||
893 | // R_SPARC_5: (Symbol + Addend) | |
894 | static inline void | |
895 | rela32_5(unsigned char* view, | |
896 | const Sized_relobj<size, big_endian>* object, | |
897 | const Symbol_value<size>* psymval, | |
898 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
899 | { | |
900 | This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend); | |
901 | } | |
902 | ||
903 | // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10 | |
904 | static inline void | |
905 | ldo_hix22(unsigned char* view, | |
906 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
907 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
908 | { | |
909 | This_insn::hi22(view, value, addend); | |
910 | } | |
911 | ||
912 | // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff | |
913 | static inline void | |
914 | ldo_lox10(unsigned char* view, | |
915 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
916 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
917 | { | |
918 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
919 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
920 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
921 | Valtype reloc = (value + addend); | |
922 | ||
923 | val &= ~0x1fff; | |
924 | reloc &= 0x3ff; | |
925 | ||
926 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
927 | } | |
928 | ||
929 | // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10 | |
930 | static inline void | |
931 | hix22(unsigned char* view, | |
932 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
933 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
934 | { | |
935 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
936 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
937 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
938 | Valtype reloc = (value + addend); | |
939 | ||
940 | val &= ~0x3fffff; | |
941 | ||
942 | reloc ^= ~(Valtype)0; | |
943 | reloc >>= 10; | |
944 | ||
945 | reloc &= 0x3fffff; | |
946 | ||
947 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
948 | } | |
949 | ||
950 | // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10 | |
951 | static inline void | |
952 | hix22(unsigned char* view, | |
953 | const Sized_relobj<size, big_endian>* object, | |
954 | const Symbol_value<size>* psymval, | |
955 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
956 | { | |
957 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
958 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
959 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
960 | Valtype reloc = psymval->value(object, addend); | |
961 | ||
962 | val &= ~0x3fffff; | |
963 | ||
964 | reloc ^= ~(Valtype)0; | |
965 | reloc >>= 10; | |
966 | ||
967 | reloc &= 0x3fffff; | |
968 | ||
969 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
970 | } | |
971 | ||
972 | ||
973 | // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00 | |
974 | static inline void | |
975 | lox10(unsigned char* view, | |
976 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
977 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
978 | { | |
979 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
980 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
981 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
982 | Valtype reloc = (value + addend); | |
983 | ||
984 | val &= ~0x1fff; | |
985 | reloc &= 0x3ff; | |
986 | reloc |= 0x1c00; | |
987 | ||
988 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
989 | } | |
990 | ||
991 | // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00 | |
992 | static inline void | |
993 | lox10(unsigned char* view, | |
994 | const Sized_relobj<size, big_endian>* object, | |
995 | const Symbol_value<size>* psymval, | |
996 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
997 | { | |
998 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
999 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1000 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
1001 | Valtype reloc = psymval->value(object, addend); | |
1002 | ||
1003 | val &= ~0x1fff; | |
1004 | reloc &= 0x3ff; | |
1005 | reloc |= 0x1c00; | |
1006 | ||
1007 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1008 | } | |
1009 | }; | |
1010 | ||
1011 | // Get the GOT section, creating it if necessary. | |
1012 | ||
1013 | template<int size, bool big_endian> | |
1014 | Output_data_got<size, big_endian>* | |
1015 | Target_sparc<size, big_endian>::got_section(Symbol_table* symtab, | |
1016 | Layout* layout) | |
1017 | { | |
1018 | if (this->got_ == NULL) | |
1019 | { | |
1020 | gold_assert(symtab != NULL && layout != NULL); | |
1021 | ||
1022 | this->got_ = new Output_data_got<size, big_endian>(); | |
1023 | ||
9f1d377b ILT |
1024 | Output_section* os; |
1025 | os = layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
1026 | (elfcpp::SHF_ALLOC | |
1027 | | elfcpp::SHF_WRITE), | |
1028 | this->got_); | |
1029 | os->set_is_relro(); | |
f5314dd5 DM |
1030 | |
1031 | // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section. | |
1032 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
1033 | this->got_, | |
1034 | 0, 0, elfcpp::STT_OBJECT, | |
1035 | elfcpp::STB_LOCAL, | |
1036 | elfcpp::STV_HIDDEN, 0, | |
1037 | false, false); | |
1038 | } | |
1039 | ||
1040 | return this->got_; | |
1041 | } | |
1042 | ||
1043 | // Get the dynamic reloc section, creating it if necessary. | |
1044 | ||
1045 | template<int size, bool big_endian> | |
1046 | typename Target_sparc<size, big_endian>::Reloc_section* | |
1047 | Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout) | |
1048 | { | |
1049 | if (this->rela_dyn_ == NULL) | |
1050 | { | |
1051 | gold_assert(layout != NULL); | |
d98bc257 | 1052 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); |
f5314dd5 DM |
1053 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, |
1054 | elfcpp::SHF_ALLOC, this->rela_dyn_); | |
1055 | } | |
1056 | return this->rela_dyn_; | |
1057 | } | |
1058 | ||
1059 | // A class to handle the PLT data. | |
1060 | ||
1061 | template<int size, bool big_endian> | |
1062 | class Output_data_plt_sparc : public Output_section_data | |
1063 | { | |
1064 | public: | |
1065 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
1066 | size, big_endian> Reloc_section; | |
1067 | ||
1068 | Output_data_plt_sparc(Layout*); | |
1069 | ||
1070 | // Add an entry to the PLT. | |
1071 | void add_entry(Symbol* gsym); | |
1072 | ||
1073 | // Return the .rela.plt section data. | |
1074 | const Reloc_section* rel_plt() const | |
1075 | { | |
1076 | return this->rel_; | |
1077 | } | |
1078 | ||
1079 | protected: | |
1080 | void do_adjust_output_section(Output_section* os); | |
1081 | ||
7d9e3d98 ILT |
1082 | // Write to a map file. |
1083 | void | |
1084 | do_print_to_mapfile(Mapfile* mapfile) const | |
1085 | { mapfile->print_output_data(this, _("** PLT")); } | |
1086 | ||
f5314dd5 DM |
1087 | private: |
1088 | // The size of an entry in the PLT. | |
1089 | static const int base_plt_entry_size = (size == 32 ? 12 : 32); | |
1090 | ||
1091 | static const unsigned int plt_entries_per_block = 160; | |
1092 | static const unsigned int plt_insn_chunk_size = 24; | |
1093 | static const unsigned int plt_pointer_chunk_size = 8; | |
1094 | static const unsigned int plt_block_size = | |
1095 | (plt_entries_per_block | |
1096 | * (plt_insn_chunk_size + plt_pointer_chunk_size)); | |
1097 | ||
1098 | // Set the final size. | |
1099 | void | |
1100 | set_final_data_size() | |
1101 | { | |
1102 | unsigned int full_count = this->count_ + 4; | |
1103 | unsigned int extra = (size == 32 ? 4 : 0); | |
1104 | ||
1105 | if (size == 32 || full_count < 32768) | |
1106 | this->set_data_size((full_count * base_plt_entry_size) + extra); | |
1107 | else | |
1108 | { | |
1109 | unsigned int ext_cnt = full_count - 32768; | |
1110 | ||
1111 | this->set_data_size((32768 * base_plt_entry_size) | |
1112 | + (ext_cnt | |
1113 | * (plt_insn_chunk_size | |
1114 | + plt_pointer_chunk_size))); | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | // Write out the PLT data. | |
1119 | void | |
1120 | do_write(Output_file*); | |
1121 | ||
1122 | // The reloc section. | |
1123 | Reloc_section* rel_; | |
1124 | // The number of PLT entries. | |
1125 | unsigned int count_; | |
1126 | }; | |
1127 | ||
4f2a9edd ILT |
1128 | // Define the constants as required by C++ standard. |
1129 | ||
1130 | template<int size, bool big_endian> | |
1131 | const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size; | |
1132 | ||
1133 | template<int size, bool big_endian> | |
1134 | const unsigned int | |
1135 | Output_data_plt_sparc<size, big_endian>::plt_entries_per_block; | |
1136 | ||
1137 | template<int size, bool big_endian> | |
1138 | const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size; | |
1139 | ||
1140 | template<int size, bool big_endian> | |
1141 | const unsigned int | |
1142 | Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size; | |
1143 | ||
1144 | template<int size, bool big_endian> | |
1145 | const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size; | |
1146 | ||
f5314dd5 DM |
1147 | // Create the PLT section. The ordinary .got section is an argument, |
1148 | // since we need to refer to the start. | |
1149 | ||
1150 | template<int size, bool big_endian> | |
1151 | Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout) | |
1152 | : Output_section_data(size == 32 ? 4 : 8), count_(0) | |
1153 | { | |
d98bc257 | 1154 | this->rel_ = new Reloc_section(false); |
f5314dd5 DM |
1155 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, |
1156 | elfcpp::SHF_ALLOC, this->rel_); | |
1157 | } | |
1158 | ||
1159 | template<int size, bool big_endian> | |
1160 | void | |
1161 | Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os) | |
1162 | { | |
1163 | os->set_entsize(0); | |
1164 | } | |
1165 | ||
1166 | // Add an entry to the PLT. | |
1167 | ||
1168 | template<int size, bool big_endian> | |
1169 | void | |
1170 | Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym) | |
1171 | { | |
1172 | gold_assert(!gsym->has_plt_offset()); | |
1173 | ||
1174 | unsigned int index = this->count_ + 4; | |
1175 | section_offset_type plt_offset; | |
1176 | ||
1177 | if (size == 32 || index < 32768) | |
1178 | plt_offset = index * base_plt_entry_size; | |
1179 | else | |
1180 | { | |
1181 | unsigned int ext_index = index - 32768; | |
1182 | ||
1183 | plt_offset = (32768 * base_plt_entry_size) | |
1184 | + ((ext_index / plt_entries_per_block) | |
1185 | * plt_block_size) | |
1186 | + ((ext_index % plt_entries_per_block) | |
1187 | * plt_insn_chunk_size); | |
1188 | } | |
1189 | ||
1190 | gsym->set_plt_offset(plt_offset); | |
1191 | ||
1192 | ++this->count_; | |
1193 | ||
1194 | // Every PLT entry needs a reloc. | |
1195 | gsym->set_needs_dynsym_entry(); | |
1196 | this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this, | |
1197 | plt_offset, 0); | |
1198 | ||
1199 | // Note that we don't need to save the symbol. The contents of the | |
1200 | // PLT are independent of which symbols are used. The symbols only | |
1201 | // appear in the relocations. | |
1202 | } | |
1203 | ||
1204 | static const unsigned int sparc_nop = 0x01000000; | |
1205 | static const unsigned int sparc_sethi_g1 = 0x03000000; | |
1206 | static const unsigned int sparc_branch_always = 0x30800000; | |
1207 | static const unsigned int sparc_branch_always_pt = 0x30680000; | |
1208 | static const unsigned int sparc_mov = 0x80100000; | |
1209 | static const unsigned int sparc_mov_g0_o0 = 0x90100000; | |
1210 | static const unsigned int sparc_mov_o7_g5 = 0x8a10000f; | |
1211 | static const unsigned int sparc_call_plus_8 = 0x40000002; | |
1212 | static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000; | |
1213 | static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001; | |
1214 | static const unsigned int sparc_mov_g5_o7 = 0x9e100005; | |
1215 | ||
1216 | // Write out the PLT. | |
1217 | ||
1218 | template<int size, bool big_endian> | |
1219 | void | |
1220 | Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of) | |
1221 | { | |
1222 | const off_t offset = this->offset(); | |
1223 | const section_size_type oview_size = | |
1224 | convert_to_section_size_type(this->data_size()); | |
1225 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
1226 | unsigned char* pov = oview; | |
1227 | ||
1228 | memset(pov, 0, base_plt_entry_size * 4); | |
1229 | pov += base_plt_entry_size * 4; | |
1230 | ||
1231 | unsigned int plt_offset = base_plt_entry_size * 4; | |
1232 | const unsigned int count = this->count_; | |
1233 | ||
1234 | if (size == 64) | |
1235 | { | |
1236 | unsigned int limit; | |
1237 | ||
1238 | limit = (count > 32768 ? 32768 : count); | |
1239 | ||
1240 | for (unsigned int i = 0; i < limit; ++i) | |
1241 | { | |
1242 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1243 | sparc_sethi_g1 + plt_offset); | |
1244 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1245 | sparc_branch_always_pt + | |
1246 | (((base_plt_entry_size - | |
1247 | (plt_offset + 4)) >> 2) & | |
1248 | 0x7ffff)); | |
1249 | elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop); | |
1250 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop); | |
1251 | elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop); | |
1252 | elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop); | |
1253 | elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop); | |
1254 | elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop); | |
1255 | ||
1256 | pov += base_plt_entry_size; | |
1257 | plt_offset += base_plt_entry_size; | |
1258 | } | |
1259 | ||
1260 | if (count > 32768) | |
1261 | { | |
1262 | unsigned int ext_cnt = count - 32768; | |
1263 | unsigned int blks = ext_cnt / plt_entries_per_block; | |
1264 | ||
1265 | for (unsigned int i = 0; i < blks; ++i) | |
1266 | { | |
1267 | unsigned int data_off = (plt_entries_per_block | |
1268 | * plt_insn_chunk_size) - 4; | |
1269 | ||
1270 | for (unsigned int j = 0; j < plt_entries_per_block; ++j) | |
1271 | { | |
1272 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1273 | sparc_mov_o7_g5); | |
1274 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1275 | sparc_call_plus_8); | |
1276 | elfcpp::Swap<32, true>::writeval(pov + 0x08, | |
1277 | sparc_nop); | |
1278 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, | |
1279 | sparc_ldx_o7_imm_g1 + | |
1280 | (data_off & 0x1fff)); | |
1281 | elfcpp::Swap<32, true>::writeval(pov + 0x10, | |
1282 | sparc_jmpl_o7_g1_g1); | |
1283 | elfcpp::Swap<32, true>::writeval(pov + 0x14, | |
1284 | sparc_mov_g5_o7); | |
1285 | ||
1286 | elfcpp::Swap<64, big_endian>::writeval( | |
1287 | pov + 0x4 + data_off, | |
1288 | (elfcpp::Elf_Xword) (oview - (pov + 0x04))); | |
1289 | ||
1290 | pov += plt_insn_chunk_size; | |
1291 | data_off -= 16; | |
1292 | } | |
1293 | } | |
1294 | ||
1295 | unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block; | |
1296 | for (unsigned int i = 0; i < sub_blk_cnt; ++i) | |
1297 | { | |
1298 | unsigned int data_off = (sub_blk_cnt | |
1299 | * plt_insn_chunk_size) - 4; | |
1300 | ||
1301 | for (unsigned int j = 0; j < plt_entries_per_block; ++j) | |
1302 | { | |
1303 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1304 | sparc_mov_o7_g5); | |
1305 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1306 | sparc_call_plus_8); | |
1307 | elfcpp::Swap<32, true>::writeval(pov + 0x08, | |
1308 | sparc_nop); | |
1309 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, | |
1310 | sparc_ldx_o7_imm_g1 + | |
1311 | (data_off & 0x1fff)); | |
1312 | elfcpp::Swap<32, true>::writeval(pov + 0x10, | |
1313 | sparc_jmpl_o7_g1_g1); | |
1314 | elfcpp::Swap<32, true>::writeval(pov + 0x14, | |
1315 | sparc_mov_g5_o7); | |
1316 | ||
1317 | elfcpp::Swap<64, big_endian>::writeval( | |
1318 | pov + 0x4 + data_off, | |
1319 | (elfcpp::Elf_Xword) (oview - (pov + 0x04))); | |
1320 | ||
1321 | pov += plt_insn_chunk_size; | |
1322 | data_off -= 16; | |
1323 | } | |
1324 | } | |
1325 | } | |
1326 | } | |
1327 | else | |
1328 | { | |
1329 | for (unsigned int i = 0; i < count; ++i) | |
1330 | { | |
1331 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1332 | sparc_sethi_g1 + plt_offset); | |
1333 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1334 | sparc_branch_always + | |
1335 | (((- (plt_offset + 4)) >> 2) & | |
1336 | 0x003fffff)); | |
1337 | elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop); | |
1338 | ||
1339 | pov += base_plt_entry_size; | |
1340 | plt_offset += base_plt_entry_size; | |
1341 | } | |
1342 | ||
1343 | elfcpp::Swap<32, true>::writeval(pov, sparc_nop); | |
1344 | pov += 4; | |
1345 | } | |
1346 | ||
1347 | gold_assert(static_cast<section_size_type>(pov - oview) == oview_size); | |
1348 | ||
1349 | of->write_output_view(offset, oview_size, oview); | |
1350 | } | |
1351 | ||
1352 | // Create a PLT entry for a global symbol. | |
1353 | ||
1354 | template<int size, bool big_endian> | |
1355 | void | |
1356 | Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab, | |
1357 | Layout* layout, | |
1358 | Symbol* gsym) | |
1359 | { | |
1360 | if (gsym->has_plt_offset()) | |
1361 | return; | |
1362 | ||
1363 | if (this->plt_ == NULL) | |
1364 | { | |
1365 | // Create the GOT sections first. | |
1366 | this->got_section(symtab, layout); | |
1367 | ||
1368 | this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout); | |
1369 | layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS, | |
1370 | (elfcpp::SHF_ALLOC | |
1371 | | elfcpp::SHF_EXECINSTR | |
1372 | | elfcpp::SHF_WRITE), | |
1373 | this->plt_); | |
1374 | ||
1375 | // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section. | |
1376 | symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL, | |
1377 | this->plt_, | |
1378 | 0, 0, elfcpp::STT_OBJECT, | |
1379 | elfcpp::STB_LOCAL, | |
1380 | elfcpp::STV_HIDDEN, 0, | |
1381 | false, false); | |
1382 | } | |
1383 | ||
1384 | this->plt_->add_entry(gsym); | |
1385 | } | |
1386 | ||
1387 | // Create a GOT entry for the TLS module index. | |
1388 | ||
1389 | template<int size, bool big_endian> | |
1390 | unsigned int | |
1391 | Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab, | |
1392 | Layout* layout, | |
1393 | Sized_relobj<size, big_endian>* object) | |
1394 | { | |
1395 | if (this->got_mod_index_offset_ == -1U) | |
1396 | { | |
1397 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
1398 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
1399 | Output_data_got<size, big_endian>* got; | |
1400 | unsigned int got_offset; | |
1401 | ||
1402 | got = this->got_section(symtab, layout); | |
1403 | got_offset = got->add_constant(0); | |
1404 | rela_dyn->add_local(object, 0, | |
1405 | (size == 64 ? | |
1406 | elfcpp::R_SPARC_TLS_DTPMOD64 : | |
1407 | elfcpp::R_SPARC_TLS_DTPMOD32), got, | |
1408 | got_offset, 0); | |
1409 | got->add_constant(0); | |
1410 | this->got_mod_index_offset_ = got_offset; | |
1411 | } | |
1412 | return this->got_mod_index_offset_; | |
1413 | } | |
1414 | ||
f5314dd5 DM |
1415 | // Optimize the TLS relocation type based on what we know about the |
1416 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1417 | // known at link time. | |
1418 | ||
1419 | static tls::Tls_optimization | |
1420 | optimize_tls_reloc(bool is_final, int r_type) | |
1421 | { | |
1422 | // If we are generating a shared library, then we can't do anything | |
1423 | // in the linker. | |
1424 | if (parameters->options().shared()) | |
1425 | return tls::TLSOPT_NONE; | |
1426 | ||
1427 | switch (r_type) | |
1428 | { | |
1429 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
1430 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
1431 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
1432 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
1433 | // These are General-Dynamic which permits fully general TLS | |
1434 | // access. Since we know that we are generating an executable, | |
1435 | // we can convert this to Initial-Exec. If we also know that | |
1436 | // this is a local symbol, we can further switch to Local-Exec. | |
1437 | if (is_final) | |
1438 | return tls::TLSOPT_TO_LE; | |
1439 | return tls::TLSOPT_TO_IE; | |
1440 | ||
1441 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
1442 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
1443 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
1444 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
1445 | // This is Local-Dynamic, which refers to a local symbol in the | |
1446 | // dynamic TLS block. Since we know that we generating an | |
1447 | // executable, we can switch to Local-Exec. | |
1448 | return tls::TLSOPT_TO_LE; | |
1449 | ||
1450 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
1451 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
1452 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
1453 | // Another type of Local-Dynamic relocation. | |
1454 | return tls::TLSOPT_TO_LE; | |
1455 | ||
1456 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
1457 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
1458 | case elfcpp::R_SPARC_TLS_IE_LD: | |
1459 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 1460 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
1461 | // These are Initial-Exec relocs which get the thread offset |
1462 | // from the GOT. If we know that we are linking against the | |
1463 | // local symbol, we can switch to Local-Exec, which links the | |
1464 | // thread offset into the instruction. | |
1465 | if (is_final) | |
1466 | return tls::TLSOPT_TO_LE; | |
1467 | return tls::TLSOPT_NONE; | |
1468 | ||
1469 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec | |
1470 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1471 | // When we already have Local-Exec, there is nothing further we | |
1472 | // can do. | |
1473 | return tls::TLSOPT_NONE; | |
1474 | ||
1475 | default: | |
1476 | gold_unreachable(); | |
1477 | } | |
1478 | } | |
1479 | ||
1480 | // Generate a PLT entry slot for a call to __tls_get_addr | |
1481 | template<int size, bool big_endian> | |
1482 | void | |
1483 | Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab, | |
1484 | Layout* layout, | |
1485 | Target_sparc<size, big_endian>* target) | |
1486 | { | |
1487 | Symbol* gsym = target->tls_get_addr_sym(symtab); | |
1488 | ||
1489 | target->make_plt_entry(symtab, layout, gsym); | |
1490 | } | |
1491 | ||
1492 | // Report an unsupported relocation against a local symbol. | |
1493 | ||
1494 | template<int size, bool big_endian> | |
1495 | void | |
1496 | Target_sparc<size, big_endian>::Scan::unsupported_reloc_local( | |
1497 | Sized_relobj<size, big_endian>* object, | |
1498 | unsigned int r_type) | |
1499 | { | |
1500 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
1501 | object->name().c_str(), r_type); | |
1502 | } | |
1503 | ||
32b769e1 DM |
1504 | // We are about to emit a dynamic relocation of type R_TYPE. If the |
1505 | // dynamic linker does not support it, issue an error. | |
1506 | ||
1507 | template<int size, bool big_endian> | |
1508 | void | |
1509 | Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type) | |
1510 | { | |
1511 | gold_assert(r_type != elfcpp::R_SPARC_NONE); | |
1512 | ||
1513 | if (size == 64) | |
1514 | { | |
1515 | switch (r_type) | |
1516 | { | |
1517 | // These are the relocation types supported by glibc for sparc 64-bit. | |
1518 | case elfcpp::R_SPARC_RELATIVE: | |
1519 | case elfcpp::R_SPARC_COPY: | |
1520 | case elfcpp::R_SPARC_64: | |
1521 | case elfcpp::R_SPARC_GLOB_DAT: | |
1522 | case elfcpp::R_SPARC_JMP_SLOT: | |
1523 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
1524 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
1525 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
1526 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
1527 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1528 | case elfcpp::R_SPARC_8: | |
1529 | case elfcpp::R_SPARC_16: | |
1530 | case elfcpp::R_SPARC_DISP8: | |
1531 | case elfcpp::R_SPARC_DISP16: | |
1532 | case elfcpp::R_SPARC_DISP32: | |
1533 | case elfcpp::R_SPARC_WDISP30: | |
1534 | case elfcpp::R_SPARC_LO10: | |
1535 | case elfcpp::R_SPARC_HI22: | |
1536 | case elfcpp::R_SPARC_OLO10: | |
1537 | case elfcpp::R_SPARC_H44: | |
1538 | case elfcpp::R_SPARC_M44: | |
1539 | case elfcpp::R_SPARC_L44: | |
1540 | case elfcpp::R_SPARC_HH22: | |
1541 | case elfcpp::R_SPARC_HM10: | |
1542 | case elfcpp::R_SPARC_LM22: | |
1543 | case elfcpp::R_SPARC_UA16: | |
1544 | case elfcpp::R_SPARC_UA32: | |
1545 | case elfcpp::R_SPARC_UA64: | |
1546 | return; | |
1547 | ||
1548 | default: | |
1549 | break; | |
1550 | } | |
1551 | } | |
1552 | else | |
1553 | { | |
1554 | switch (r_type) | |
1555 | { | |
1556 | // These are the relocation types supported by glibc for sparc 32-bit. | |
1557 | case elfcpp::R_SPARC_RELATIVE: | |
1558 | case elfcpp::R_SPARC_COPY: | |
1559 | case elfcpp::R_SPARC_GLOB_DAT: | |
1560 | case elfcpp::R_SPARC_32: | |
1561 | case elfcpp::R_SPARC_JMP_SLOT: | |
1562 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
1563 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
1564 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
1565 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
1566 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1567 | case elfcpp::R_SPARC_8: | |
1568 | case elfcpp::R_SPARC_16: | |
1569 | case elfcpp::R_SPARC_DISP8: | |
1570 | case elfcpp::R_SPARC_DISP16: | |
1571 | case elfcpp::R_SPARC_DISP32: | |
1572 | case elfcpp::R_SPARC_LO10: | |
1573 | case elfcpp::R_SPARC_WDISP30: | |
1574 | case elfcpp::R_SPARC_HI22: | |
1575 | case elfcpp::R_SPARC_UA16: | |
1576 | case elfcpp::R_SPARC_UA32: | |
1577 | return; | |
1578 | ||
1579 | default: | |
1580 | break; | |
1581 | } | |
1582 | } | |
1583 | ||
1584 | // This prevents us from issuing more than one error per reloc | |
1585 | // section. But we can still wind up issuing more than one | |
1586 | // error per object file. | |
1587 | if (this->issued_non_pic_error_) | |
1588 | return; | |
33aea2fd | 1589 | gold_assert(parameters->options().output_is_position_independent()); |
32b769e1 DM |
1590 | object->error(_("requires unsupported dynamic reloc; " |
1591 | "recompile with -fPIC")); | |
1592 | this->issued_non_pic_error_ = true; | |
1593 | return; | |
1594 | } | |
1595 | ||
f5314dd5 DM |
1596 | // Scan a relocation for a local symbol. |
1597 | ||
1598 | template<int size, bool big_endian> | |
1599 | inline void | |
1600 | Target_sparc<size, big_endian>::Scan::local( | |
1601 | const General_options&, | |
1602 | Symbol_table* symtab, | |
1603 | Layout* layout, | |
1604 | Target_sparc<size, big_endian>* target, | |
1605 | Sized_relobj<size, big_endian>* object, | |
1606 | unsigned int data_shndx, | |
1607 | Output_section* output_section, | |
1608 | const elfcpp::Rela<size, big_endian>& reloc, | |
1609 | unsigned int r_type, | |
1610 | const elfcpp::Sym<size, big_endian>& lsym) | |
1611 | { | |
1612 | unsigned int orig_r_type = r_type; | |
1613 | ||
1614 | r_type &= 0xff; | |
1615 | switch (r_type) | |
1616 | { | |
1617 | case elfcpp::R_SPARC_NONE: | |
1618 | case elfcpp::R_SPARC_REGISTER: | |
1619 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
1620 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
1621 | break; | |
1622 | ||
1623 | case elfcpp::R_SPARC_64: | |
1624 | case elfcpp::R_SPARC_32: | |
1625 | // If building a shared library (or a position-independent | |
1626 | // executable), we need to create a dynamic relocation for | |
1627 | // this location. The relocation applied at link time will | |
1628 | // apply the link-time value, so we flag the location with | |
1629 | // an R_SPARC_RELATIVE relocation so the dynamic loader can | |
1630 | // relocate it easily. | |
1631 | if (parameters->options().output_is_position_independent()) | |
1632 | { | |
1633 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1634 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1635 | rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE, | |
1636 | output_section, data_shndx, | |
1637 | reloc.get_r_offset(), | |
1638 | reloc.get_r_addend()); | |
1639 | } | |
1640 | break; | |
1641 | ||
1642 | case elfcpp::R_SPARC_HIX22: | |
1643 | case elfcpp::R_SPARC_LOX10: | |
1644 | case elfcpp::R_SPARC_H44: | |
1645 | case elfcpp::R_SPARC_M44: | |
1646 | case elfcpp::R_SPARC_L44: | |
1647 | case elfcpp::R_SPARC_HH22: | |
1648 | case elfcpp::R_SPARC_HM10: | |
1649 | case elfcpp::R_SPARC_LM22: | |
1650 | case elfcpp::R_SPARC_UA64: | |
1651 | case elfcpp::R_SPARC_UA32: | |
1652 | case elfcpp::R_SPARC_UA16: | |
1653 | case elfcpp::R_SPARC_HI22: | |
1654 | case elfcpp::R_SPARC_LO10: | |
1655 | case elfcpp::R_SPARC_OLO10: | |
1656 | case elfcpp::R_SPARC_16: | |
1657 | case elfcpp::R_SPARC_11: | |
1658 | case elfcpp::R_SPARC_10: | |
1659 | case elfcpp::R_SPARC_8: | |
1660 | case elfcpp::R_SPARC_7: | |
1661 | case elfcpp::R_SPARC_6: | |
1662 | case elfcpp::R_SPARC_5: | |
1663 | // If building a shared library (or a position-independent | |
1664 | // executable), we need to create a dynamic relocation for | |
1665 | // this location. | |
1666 | if (parameters->options().output_is_position_independent()) | |
1667 | { | |
1668 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
32b769e1 DM |
1669 | |
1670 | check_non_pic(object, r_type); | |
f5314dd5 DM |
1671 | if (lsym.get_st_type() != elfcpp::STT_SECTION) |
1672 | { | |
1673 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1674 | rela_dyn->add_local(object, r_sym, orig_r_type, output_section, | |
1675 | data_shndx, reloc.get_r_offset(), | |
1676 | reloc.get_r_addend()); | |
1677 | } | |
1678 | else | |
1679 | { | |
1680 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1681 | gold_assert(lsym.get_st_value() == 0); | |
1682 | rela_dyn->add_local_relative(object, r_sym, orig_r_type, | |
1683 | output_section, data_shndx, | |
1684 | reloc.get_r_offset(), | |
1685 | reloc.get_r_addend()); | |
1686 | } | |
1687 | } | |
1688 | break; | |
1689 | ||
1690 | case elfcpp::R_SPARC_WDISP30: | |
1691 | case elfcpp::R_SPARC_WDISP22: | |
1692 | case elfcpp::R_SPARC_WDISP19: | |
1693 | case elfcpp::R_SPARC_WDISP16: | |
1694 | case elfcpp::R_SPARC_DISP8: | |
1695 | case elfcpp::R_SPARC_DISP16: | |
1696 | case elfcpp::R_SPARC_DISP32: | |
1697 | case elfcpp::R_SPARC_DISP64: | |
1698 | case elfcpp::R_SPARC_PC10: | |
1699 | case elfcpp::R_SPARC_PC22: | |
1700 | break; | |
1701 | ||
1702 | case elfcpp::R_SPARC_GOT10: | |
1703 | case elfcpp::R_SPARC_GOT13: | |
1704 | case elfcpp::R_SPARC_GOT22: | |
1705 | { | |
1706 | // The symbol requires a GOT entry. | |
1707 | Output_data_got<size, big_endian>* got; | |
1708 | unsigned int r_sym; | |
1709 | ||
1710 | got = target->got_section(symtab, layout); | |
1711 | r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1712 | ||
1713 | // If we are generating a shared object, we need to add a | |
1714 | // dynamic relocation for this symbol's GOT entry. | |
1715 | if (parameters->options().output_is_position_independent()) | |
1716 | { | |
1717 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
1718 | { | |
1719 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1720 | unsigned int off; | |
1721 | ||
1722 | off = got->add_constant(0); | |
1723 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
1724 | rela_dyn->add_local_relative(object, r_sym, | |
1725 | elfcpp::R_SPARC_RELATIVE, | |
1726 | got, off, 0); | |
1727 | } | |
1728 | } | |
1729 | else | |
1730 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
1731 | } | |
1732 | break; | |
1733 | ||
1734 | // These are initial TLS relocs, which are expected when | |
1735 | // linking. | |
1736 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
1737 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
1738 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
1739 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
1740 | case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic | |
1741 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
1742 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
1743 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
1744 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
1745 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
1746 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
1747 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
1748 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
1749 | case elfcpp::R_SPARC_TLS_IE_LD: | |
1750 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 1751 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
1752 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec |
1753 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1754 | { | |
1755 | bool output_is_shared = parameters->options().shared(); | |
1756 | const tls::Tls_optimization optimized_type | |
1757 | = optimize_tls_reloc(!output_is_shared, r_type); | |
1758 | switch (r_type) | |
1759 | { | |
1760 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
1761 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
1762 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
1763 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
1764 | if (optimized_type == tls::TLSOPT_NONE) | |
1765 | { | |
1766 | // Create a pair of GOT entries for the module index and | |
1767 | // dtv-relative offset. | |
1768 | Output_data_got<size, big_endian>* got | |
1769 | = target->got_section(symtab, layout); | |
1770 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
d491d34e ILT |
1771 | unsigned int shndx = lsym.get_st_shndx(); |
1772 | bool is_ordinary; | |
1773 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
1774 | if (!is_ordinary) | |
1775 | object->error(_("local symbol %u has bad shndx %u"), | |
1776 | r_sym, shndx); | |
1777 | else | |
1778 | got->add_local_pair_with_rela(object, r_sym, | |
1779 | lsym.get_st_shndx(), | |
1780 | GOT_TYPE_TLS_PAIR, | |
1781 | target->rela_dyn_section(layout), | |
1782 | (size == 64 | |
1783 | ? elfcpp::R_SPARC_TLS_DTPMOD64 | |
1784 | : elfcpp::R_SPARC_TLS_DTPMOD32), | |
1785 | 0); | |
f5314dd5 DM |
1786 | if (r_type == elfcpp::R_SPARC_TLS_GD_CALL) |
1787 | generate_tls_call(symtab, layout, target); | |
1788 | } | |
1789 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
1790 | unsupported_reloc_local(object, r_type); | |
1791 | break; | |
1792 | ||
1793 | case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic | |
1794 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
1795 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
1796 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
1797 | if (optimized_type == tls::TLSOPT_NONE) | |
1798 | { | |
1799 | // Create a GOT entry for the module index. | |
1800 | target->got_mod_index_entry(symtab, layout, object); | |
1801 | ||
1802 | if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL) | |
1803 | generate_tls_call(symtab, layout, target); | |
1804 | } | |
1805 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
1806 | unsupported_reloc_local(object, r_type); | |
1807 | break; | |
1808 | ||
1809 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
1810 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
1811 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
1812 | break; | |
1813 | ||
1814 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
1815 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
1816 | case elfcpp::R_SPARC_TLS_IE_LD: | |
1817 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 1818 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
1819 | layout->set_has_static_tls(); |
1820 | if (optimized_type == tls::TLSOPT_NONE) | |
1821 | { | |
1822 | // Create a GOT entry for the tp-relative offset. | |
1823 | Output_data_got<size, big_endian>* got | |
1824 | = target->got_section(symtab, layout); | |
1825 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1826 | ||
1827 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET)) | |
1828 | { | |
1829 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1830 | unsigned int off = got->add_constant(0); | |
1831 | ||
1832 | object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET, | |
1833 | off); | |
1834 | rela_dyn->add_local_relative(object, r_sym, | |
1835 | (size == 64 ? | |
1836 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
1837 | elfcpp::R_SPARC_TLS_TPOFF32), | |
1838 | got, off, 0); | |
1839 | } | |
1840 | } | |
1841 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
1842 | unsupported_reloc_local(object, r_type); | |
1843 | break; | |
1844 | ||
1845 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec | |
1846 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1847 | layout->set_has_static_tls(); | |
1848 | if (output_is_shared) | |
1849 | { | |
1850 | // We need to create a dynamic relocation. | |
1851 | gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION); | |
1852 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1853 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1854 | rela_dyn->add_local_relative(object, r_sym, r_type, | |
1855 | output_section, data_shndx, | |
1856 | reloc.get_r_offset(), 0); | |
1857 | } | |
1858 | break; | |
1859 | } | |
1860 | } | |
1861 | break; | |
1862 | ||
1863 | // These are relocations which should only be seen by the | |
1864 | // dynamic linker, and should never be seen here. | |
1865 | case elfcpp::R_SPARC_COPY: | |
1866 | case elfcpp::R_SPARC_GLOB_DAT: | |
1867 | case elfcpp::R_SPARC_JMP_SLOT: | |
1868 | case elfcpp::R_SPARC_RELATIVE: | |
1869 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
1870 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
1871 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
1872 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
1873 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
1874 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
1875 | gold_error(_("%s: unexpected reloc %u in object file"), | |
1876 | object->name().c_str(), r_type); | |
1877 | break; | |
1878 | ||
1879 | default: | |
1880 | unsupported_reloc_local(object, r_type); | |
1881 | break; | |
1882 | } | |
1883 | } | |
1884 | ||
1885 | // Report an unsupported relocation against a global symbol. | |
1886 | ||
1887 | template<int size, bool big_endian> | |
1888 | void | |
1889 | Target_sparc<size, big_endian>::Scan::unsupported_reloc_global( | |
1890 | Sized_relobj<size, big_endian>* object, | |
1891 | unsigned int r_type, | |
1892 | Symbol* gsym) | |
1893 | { | |
1894 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), | |
1895 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
1896 | } | |
1897 | ||
1898 | // Scan a relocation for a global symbol. | |
1899 | ||
1900 | template<int size, bool big_endian> | |
1901 | inline void | |
1902 | Target_sparc<size, big_endian>::Scan::global( | |
12c0daef | 1903 | const General_options&, |
f5314dd5 DM |
1904 | Symbol_table* symtab, |
1905 | Layout* layout, | |
1906 | Target_sparc<size, big_endian>* target, | |
1907 | Sized_relobj<size, big_endian>* object, | |
1908 | unsigned int data_shndx, | |
1909 | Output_section* output_section, | |
1910 | const elfcpp::Rela<size, big_endian>& reloc, | |
1911 | unsigned int r_type, | |
1912 | Symbol* gsym) | |
1913 | { | |
1914 | unsigned int orig_r_type = r_type; | |
1915 | ||
9efe6174 ILT |
1916 | // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got |
1917 | // section. We check here to avoid creating a dynamic reloc against | |
1918 | // _GLOBAL_OFFSET_TABLE_. | |
1919 | if (!target->has_got_section() | |
1920 | && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0) | |
1921 | target->got_section(symtab, layout); | |
1922 | ||
f5314dd5 DM |
1923 | r_type &= 0xff; |
1924 | switch (r_type) | |
1925 | { | |
1926 | case elfcpp::R_SPARC_NONE: | |
1927 | case elfcpp::R_SPARC_REGISTER: | |
1928 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
1929 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
1930 | break; | |
1931 | ||
1932 | case elfcpp::R_SPARC_PLT64: | |
1933 | case elfcpp::R_SPARC_PLT32: | |
1934 | case elfcpp::R_SPARC_HIPLT22: | |
1935 | case elfcpp::R_SPARC_LOPLT10: | |
1936 | case elfcpp::R_SPARC_PCPLT32: | |
1937 | case elfcpp::R_SPARC_PCPLT22: | |
1938 | case elfcpp::R_SPARC_PCPLT10: | |
1939 | case elfcpp::R_SPARC_WPLT30: | |
1940 | // If the symbol is fully resolved, this is just a PC32 reloc. | |
1941 | // Otherwise we need a PLT entry. | |
1942 | if (gsym->final_value_is_known()) | |
1943 | break; | |
1944 | // If building a shared library, we can also skip the PLT entry | |
1945 | // if the symbol is defined in the output file and is protected | |
1946 | // or hidden. | |
1947 | if (gsym->is_defined() | |
1948 | && !gsym->is_from_dynobj() | |
1949 | && !gsym->is_preemptible()) | |
1950 | break; | |
1951 | target->make_plt_entry(symtab, layout, gsym); | |
1952 | break; | |
1953 | ||
1954 | case elfcpp::R_SPARC_DISP8: | |
1955 | case elfcpp::R_SPARC_DISP16: | |
1956 | case elfcpp::R_SPARC_DISP32: | |
1957 | case elfcpp::R_SPARC_DISP64: | |
1958 | case elfcpp::R_SPARC_PC_HH22: | |
1959 | case elfcpp::R_SPARC_PC_HM10: | |
1960 | case elfcpp::R_SPARC_PC_LM22: | |
1961 | case elfcpp::R_SPARC_PC10: | |
1962 | case elfcpp::R_SPARC_PC22: | |
1963 | case elfcpp::R_SPARC_WDISP30: | |
1964 | case elfcpp::R_SPARC_WDISP22: | |
1965 | case elfcpp::R_SPARC_WDISP19: | |
1966 | case elfcpp::R_SPARC_WDISP16: | |
1967 | { | |
1968 | if (gsym->needs_plt_entry()) | |
1969 | target->make_plt_entry(symtab, layout, gsym); | |
1970 | // Make a dynamic relocation if necessary. | |
1971 | int flags = Symbol::NON_PIC_REF; | |
1972 | if (gsym->type() == elfcpp::STT_FUNC) | |
1973 | flags |= Symbol::FUNCTION_CALL; | |
1974 | if (gsym->needs_dynamic_reloc(flags)) | |
1975 | { | |
966d4097 | 1976 | if (gsym->may_need_copy_reloc()) |
f5314dd5 | 1977 | { |
12c0daef | 1978 | target->copy_reloc(symtab, layout, object, |
f5314dd5 DM |
1979 | data_shndx, output_section, gsym, |
1980 | reloc); | |
1981 | } | |
1982 | else | |
1983 | { | |
1984 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
32b769e1 | 1985 | check_non_pic(object, r_type); |
f5314dd5 DM |
1986 | rela_dyn->add_global(gsym, orig_r_type, output_section, object, |
1987 | data_shndx, reloc.get_r_offset(), | |
1988 | reloc.get_r_addend()); | |
1989 | } | |
1990 | } | |
1991 | } | |
1992 | break; | |
1993 | ||
1994 | case elfcpp::R_SPARC_UA64: | |
1995 | case elfcpp::R_SPARC_64: | |
1996 | case elfcpp::R_SPARC_HIX22: | |
1997 | case elfcpp::R_SPARC_LOX10: | |
1998 | case elfcpp::R_SPARC_H44: | |
1999 | case elfcpp::R_SPARC_M44: | |
2000 | case elfcpp::R_SPARC_L44: | |
2001 | case elfcpp::R_SPARC_HH22: | |
2002 | case elfcpp::R_SPARC_HM10: | |
2003 | case elfcpp::R_SPARC_LM22: | |
2004 | case elfcpp::R_SPARC_HI22: | |
2005 | case elfcpp::R_SPARC_LO10: | |
2006 | case elfcpp::R_SPARC_OLO10: | |
2007 | case elfcpp::R_SPARC_UA32: | |
2008 | case elfcpp::R_SPARC_32: | |
2009 | case elfcpp::R_SPARC_UA16: | |
2010 | case elfcpp::R_SPARC_16: | |
2011 | case elfcpp::R_SPARC_11: | |
2012 | case elfcpp::R_SPARC_10: | |
2013 | case elfcpp::R_SPARC_8: | |
2014 | case elfcpp::R_SPARC_7: | |
2015 | case elfcpp::R_SPARC_6: | |
2016 | case elfcpp::R_SPARC_5: | |
2017 | { | |
2018 | // Make a PLT entry if necessary. | |
2019 | if (gsym->needs_plt_entry()) | |
2020 | { | |
2021 | target->make_plt_entry(symtab, layout, gsym); | |
2022 | // Since this is not a PC-relative relocation, we may be | |
2023 | // taking the address of a function. In that case we need to | |
2024 | // set the entry in the dynamic symbol table to the address of | |
2025 | // the PLT entry. | |
2026 | if (gsym->is_from_dynobj() && !parameters->options().shared()) | |
2027 | gsym->set_needs_dynsym_value(); | |
2028 | } | |
2029 | // Make a dynamic relocation if necessary. | |
2030 | if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF)) | |
2031 | { | |
966d4097 | 2032 | if (gsym->may_need_copy_reloc()) |
f5314dd5 | 2033 | { |
12c0daef | 2034 | target->copy_reloc(symtab, layout, object, |
f5314dd5 DM |
2035 | data_shndx, output_section, gsym, reloc); |
2036 | } | |
2037 | else if ((r_type == elfcpp::R_SPARC_32 | |
2038 | || r_type == elfcpp::R_SPARC_64) | |
2039 | && gsym->can_use_relative_reloc(false)) | |
2040 | { | |
2041 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2042 | rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE, | |
2043 | output_section, object, | |
2044 | data_shndx, reloc.get_r_offset(), | |
2045 | reloc.get_r_addend()); | |
2046 | } | |
2047 | else | |
2048 | { | |
2049 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2050 | ||
32b769e1 | 2051 | check_non_pic(object, r_type); |
f5314dd5 DM |
2052 | if (gsym->is_from_dynobj() |
2053 | || gsym->is_undefined() | |
2054 | || gsym->is_preemptible()) | |
2055 | rela_dyn->add_global(gsym, orig_r_type, output_section, | |
2056 | object, data_shndx, | |
2057 | reloc.get_r_offset(), | |
2058 | reloc.get_r_addend()); | |
2059 | else | |
2060 | rela_dyn->add_global_relative(gsym, orig_r_type, | |
2061 | output_section, object, | |
2062 | data_shndx, | |
2063 | reloc.get_r_offset(), | |
2064 | reloc.get_r_addend()); | |
2065 | } | |
2066 | } | |
2067 | } | |
2068 | break; | |
2069 | ||
2070 | case elfcpp::R_SPARC_GOT10: | |
2071 | case elfcpp::R_SPARC_GOT13: | |
2072 | case elfcpp::R_SPARC_GOT22: | |
2073 | { | |
2074 | // The symbol requires a GOT entry. | |
2075 | Output_data_got<size, big_endian>* got; | |
2076 | ||
2077 | got = target->got_section(symtab, layout); | |
2078 | if (gsym->final_value_is_known()) | |
2079 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
2080 | else | |
2081 | { | |
2082 | // If this symbol is not fully resolved, we need to add a | |
2083 | // dynamic relocation for it. | |
2084 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2085 | if (gsym->is_from_dynobj() | |
2086 | || gsym->is_undefined() | |
2087 | || gsym->is_preemptible()) | |
2088 | got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn, | |
2089 | elfcpp::R_SPARC_GLOB_DAT); | |
2090 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
2091 | { | |
2092 | unsigned int off = got->add_constant(0); | |
2093 | ||
2094 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
2095 | rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE, | |
2096 | got, off, 0); | |
2097 | } | |
2098 | } | |
2099 | } | |
2100 | break; | |
2101 | ||
2102 | // These are initial tls relocs, which are expected when | |
2103 | // linking. | |
2104 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2105 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2106 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2107 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2108 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
2109 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2110 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2111 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2112 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2113 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2114 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2115 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2116 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2117 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2118 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2119 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2120 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 2121 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
2122 | { |
2123 | const bool is_final = gsym->final_value_is_known(); | |
2124 | const tls::Tls_optimization optimized_type | |
2125 | = optimize_tls_reloc(is_final, r_type); | |
2126 | switch (r_type) | |
2127 | { | |
2128 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2129 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2130 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2131 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2132 | if (optimized_type == tls::TLSOPT_NONE) | |
2133 | { | |
2134 | // Create a pair of GOT entries for the module index and | |
2135 | // dtv-relative offset. | |
2136 | Output_data_got<size, big_endian>* got | |
2137 | = target->got_section(symtab, layout); | |
2138 | got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR, | |
2139 | target->rela_dyn_section(layout), | |
2140 | (size == 64 ? | |
2141 | elfcpp::R_SPARC_TLS_DTPMOD64 : | |
2142 | elfcpp::R_SPARC_TLS_DTPMOD32), | |
2143 | (size == 64 ? | |
2144 | elfcpp::R_SPARC_TLS_DTPOFF64 : | |
2145 | elfcpp::R_SPARC_TLS_DTPOFF32)); | |
2146 | ||
2147 | // Emit R_SPARC_WPLT30 against "__tls_get_addr" | |
2148 | if (r_type == elfcpp::R_SPARC_TLS_GD_CALL) | |
2149 | generate_tls_call(symtab, layout, target); | |
2150 | } | |
2151 | else if (optimized_type == tls::TLSOPT_TO_IE) | |
2152 | { | |
2153 | // Create a GOT entry for the tp-relative offset. | |
2154 | Output_data_got<size, big_endian>* got | |
2155 | = target->got_section(symtab, layout); | |
2156 | got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET, | |
2157 | target->rela_dyn_section(layout), | |
2158 | (size == 64 ? | |
2159 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
2160 | elfcpp::R_SPARC_TLS_TPOFF32)); | |
2161 | } | |
2162 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2163 | unsupported_reloc_global(object, r_type, gsym); | |
2164 | break; | |
2165 | ||
2166 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
2167 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2168 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2169 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2170 | if (optimized_type == tls::TLSOPT_NONE) | |
2171 | { | |
2172 | // Create a GOT entry for the module index. | |
2173 | target->got_mod_index_entry(symtab, layout, object); | |
2174 | ||
2175 | if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL) | |
2176 | generate_tls_call(symtab, layout, target); | |
2177 | } | |
2178 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2179 | unsupported_reloc_global(object, r_type, gsym); | |
2180 | break; | |
2181 | ||
2182 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2183 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2184 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2185 | break; | |
2186 | ||
2187 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2188 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2189 | layout->set_has_static_tls(); | |
2190 | if (parameters->options().shared()) | |
2191 | { | |
2192 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2193 | rela_dyn->add_global_relative(gsym, orig_r_type, | |
2194 | output_section, object, | |
2195 | data_shndx, reloc.get_r_offset(), | |
2196 | 0); | |
2197 | } | |
2198 | break; | |
2199 | ||
2200 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2201 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2202 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2203 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 2204 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
2205 | layout->set_has_static_tls(); |
2206 | if (optimized_type == tls::TLSOPT_NONE) | |
2207 | { | |
2208 | // Create a GOT entry for the tp-relative offset. | |
2209 | Output_data_got<size, big_endian>* got | |
2210 | = target->got_section(symtab, layout); | |
2211 | got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET, | |
2212 | target->rela_dyn_section(layout), | |
2213 | (size == 64 ? | |
2214 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
2215 | elfcpp::R_SPARC_TLS_TPOFF32)); | |
2216 | } | |
2217 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2218 | unsupported_reloc_global(object, r_type, gsym); | |
2219 | break; | |
2220 | } | |
2221 | } | |
2222 | break; | |
2223 | ||
2224 | // These are relocations which should only be seen by the | |
2225 | // dynamic linker, and should never be seen here. | |
2226 | case elfcpp::R_SPARC_COPY: | |
2227 | case elfcpp::R_SPARC_GLOB_DAT: | |
2228 | case elfcpp::R_SPARC_JMP_SLOT: | |
2229 | case elfcpp::R_SPARC_RELATIVE: | |
2230 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
2231 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
2232 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
2233 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
2234 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
2235 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
2236 | gold_error(_("%s: unexpected reloc %u in object file"), | |
2237 | object->name().c_str(), r_type); | |
2238 | break; | |
2239 | ||
2240 | default: | |
2241 | unsupported_reloc_global(object, r_type, gsym); | |
2242 | break; | |
2243 | } | |
2244 | } | |
2245 | ||
6d03d481 ST |
2246 | // Process relocations for gc. |
2247 | ||
2248 | template<int size, bool big_endian> | |
2249 | void | |
2250 | Target_sparc<size, big_endian>::gc_process_relocs( | |
2251 | const General_options& options, | |
2252 | Symbol_table* symtab, | |
2253 | Layout* layout, | |
2254 | Sized_relobj<size, big_endian>* object, | |
2255 | unsigned int data_shndx, | |
2256 | unsigned int, | |
2257 | const unsigned char* prelocs, | |
2258 | size_t reloc_count, | |
2259 | Output_section* output_section, | |
2260 | bool needs_special_offset_handling, | |
2261 | size_t local_symbol_count, | |
2262 | const unsigned char* plocal_symbols) | |
2263 | { | |
2264 | typedef Target_sparc<size, big_endian> Sparc; | |
2265 | typedef typename Target_sparc<size, big_endian>::Scan Scan; | |
2266 | ||
2267 | gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>( | |
2268 | options, | |
2269 | symtab, | |
2270 | layout, | |
2271 | this, | |
2272 | object, | |
2273 | data_shndx, | |
2274 | prelocs, | |
2275 | reloc_count, | |
2276 | output_section, | |
2277 | needs_special_offset_handling, | |
2278 | local_symbol_count, | |
2279 | plocal_symbols); | |
2280 | } | |
2281 | ||
f5314dd5 DM |
2282 | // Scan relocations for a section. |
2283 | ||
2284 | template<int size, bool big_endian> | |
2285 | void | |
2286 | Target_sparc<size, big_endian>::scan_relocs( | |
2287 | const General_options& options, | |
2288 | Symbol_table* symtab, | |
2289 | Layout* layout, | |
2290 | Sized_relobj<size, big_endian>* object, | |
2291 | unsigned int data_shndx, | |
2292 | unsigned int sh_type, | |
2293 | const unsigned char* prelocs, | |
2294 | size_t reloc_count, | |
2295 | Output_section* output_section, | |
2296 | bool needs_special_offset_handling, | |
2297 | size_t local_symbol_count, | |
2298 | const unsigned char* plocal_symbols) | |
2299 | { | |
2300 | typedef Target_sparc<size, big_endian> Sparc; | |
2301 | typedef typename Target_sparc<size, big_endian>::Scan Scan; | |
2302 | ||
2303 | if (sh_type == elfcpp::SHT_REL) | |
2304 | { | |
2305 | gold_error(_("%s: unsupported REL reloc section"), | |
2306 | object->name().c_str()); | |
2307 | return; | |
2308 | } | |
2309 | ||
2310 | gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>( | |
2311 | options, | |
2312 | symtab, | |
2313 | layout, | |
2314 | this, | |
2315 | object, | |
2316 | data_shndx, | |
2317 | prelocs, | |
2318 | reloc_count, | |
2319 | output_section, | |
2320 | needs_special_offset_handling, | |
2321 | local_symbol_count, | |
2322 | plocal_symbols); | |
2323 | } | |
2324 | ||
2325 | // Finalize the sections. | |
2326 | ||
2327 | template<int size, bool big_endian> | |
2328 | void | |
2329 | Target_sparc<size, big_endian>::do_finalize_sections(Layout* layout) | |
2330 | { | |
2331 | // Fill in some more dynamic tags. | |
2332 | Output_data_dynamic* const odyn = layout->dynamic_data(); | |
2333 | if (odyn != NULL) | |
2334 | { | |
2335 | if (this->plt_ != NULL) | |
2336 | { | |
2337 | const Output_data* od = this->plt_->rel_plt(); | |
2338 | odyn->add_section_size(elfcpp::DT_PLTRELSZ, od); | |
2339 | odyn->add_section_address(elfcpp::DT_JMPREL, od); | |
2340 | odyn->add_constant(elfcpp::DT_PLTREL, elfcpp::DT_RELA); | |
2341 | ||
2342 | odyn->add_section_address(elfcpp::DT_PLTGOT, this->plt_); | |
2343 | } | |
2344 | ||
2345 | if (this->rela_dyn_ != NULL) | |
2346 | { | |
2347 | const Output_data* od = this->rela_dyn_; | |
2348 | odyn->add_section_address(elfcpp::DT_RELA, od); | |
2349 | odyn->add_section_size(elfcpp::DT_RELASZ, od); | |
2350 | odyn->add_constant(elfcpp::DT_RELAENT, | |
2351 | elfcpp::Elf_sizes<size>::rela_size); | |
2352 | } | |
2353 | ||
2354 | if (!parameters->options().shared()) | |
2355 | { | |
2356 | // The value of the DT_DEBUG tag is filled in by the dynamic | |
2357 | // linker at run time, and used by the debugger. | |
2358 | odyn->add_constant(elfcpp::DT_DEBUG, 0); | |
2359 | } | |
2360 | } | |
2361 | ||
2362 | // Emit any relocs we saved in an attempt to avoid generating COPY | |
2363 | // relocs. | |
12c0daef ILT |
2364 | if (this->copy_relocs_.any_saved_relocs()) |
2365 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
f5314dd5 DM |
2366 | } |
2367 | ||
2368 | // Perform a relocation. | |
2369 | ||
2370 | template<int size, bool big_endian> | |
2371 | inline bool | |
2372 | Target_sparc<size, big_endian>::Relocate::relocate( | |
2373 | const Relocate_info<size, big_endian>* relinfo, | |
2374 | Target_sparc* target, | |
031cdbed | 2375 | Output_section*, |
f5314dd5 DM |
2376 | size_t relnum, |
2377 | const elfcpp::Rela<size, big_endian>& rela, | |
2378 | unsigned int r_type, | |
2379 | const Sized_symbol<size>* gsym, | |
2380 | const Symbol_value<size>* psymval, | |
2381 | unsigned char* view, | |
2382 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
2383 | section_size_type view_size) | |
2384 | { | |
2385 | r_type &= 0xff; | |
2386 | ||
2387 | if (this->ignore_gd_add_) | |
2388 | { | |
2389 | if (r_type != elfcpp::R_SPARC_TLS_GD_ADD) | |
2390 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2391 | _("missing expected TLS relocation")); | |
2392 | else | |
2393 | { | |
2394 | this->ignore_gd_add_ = false; | |
2395 | return false; | |
2396 | } | |
2397 | } | |
2398 | ||
2399 | typedef Sparc_relocate_functions<size, big_endian> Reloc; | |
2400 | ||
2401 | // Pick the value to use for symbols defined in shared objects. | |
2402 | Symbol_value<size> symval; | |
2403 | if (gsym != NULL | |
de4c45bd ILT |
2404 | && gsym->use_plt_offset(r_type == elfcpp::R_SPARC_DISP8 |
2405 | || r_type == elfcpp::R_SPARC_DISP16 | |
2406 | || r_type == elfcpp::R_SPARC_DISP32 | |
2407 | || r_type == elfcpp::R_SPARC_DISP64 | |
2408 | || r_type == elfcpp::R_SPARC_PC_HH22 | |
2409 | || r_type == elfcpp::R_SPARC_PC_HM10 | |
2410 | || r_type == elfcpp::R_SPARC_PC_LM22 | |
2411 | || r_type == elfcpp::R_SPARC_PC10 | |
2412 | || r_type == elfcpp::R_SPARC_PC22 | |
2413 | || r_type == elfcpp::R_SPARC_WDISP30 | |
2414 | || r_type == elfcpp::R_SPARC_WDISP22 | |
2415 | || r_type == elfcpp::R_SPARC_WDISP19 | |
2416 | || r_type == elfcpp::R_SPARC_WDISP16)) | |
f5314dd5 DM |
2417 | { |
2418 | elfcpp::Elf_Xword value; | |
2419 | ||
2420 | value = target->plt_section()->address() + gsym->plt_offset(); | |
2421 | ||
2422 | symval.set_output_value(value); | |
2423 | ||
2424 | psymval = &symval; | |
2425 | } | |
2426 | ||
2427 | const Sized_relobj<size, big_endian>* object = relinfo->object; | |
2428 | const elfcpp::Elf_Xword addend = rela.get_r_addend(); | |
2429 | ||
2430 | // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT | |
2431 | // pointer points to the beginning, not the end, of the table. | |
2432 | // So we just use the plain offset. | |
2433 | bool have_got_offset = false; | |
2434 | unsigned int got_offset = 0; | |
2435 | switch (r_type) | |
2436 | { | |
2437 | case elfcpp::R_SPARC_GOT10: | |
2438 | case elfcpp::R_SPARC_GOT13: | |
2439 | case elfcpp::R_SPARC_GOT22: | |
2440 | if (gsym != NULL) | |
2441 | { | |
2442 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
2443 | got_offset = gsym->got_offset(GOT_TYPE_STANDARD); | |
2444 | } | |
2445 | else | |
2446 | { | |
2447 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
2448 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); | |
2449 | got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
2450 | } | |
2451 | have_got_offset = true; | |
2452 | break; | |
2453 | ||
2454 | default: | |
2455 | break; | |
2456 | } | |
2457 | ||
2458 | switch (r_type) | |
2459 | { | |
2460 | case elfcpp::R_SPARC_NONE: | |
2461 | case elfcpp::R_SPARC_REGISTER: | |
2462 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
2463 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
2464 | break; | |
2465 | ||
2466 | case elfcpp::R_SPARC_8: | |
2467 | Relocate_functions<size, big_endian>::rela8(view, object, | |
2468 | psymval, addend); | |
2469 | break; | |
2470 | ||
2471 | case elfcpp::R_SPARC_16: | |
2472 | Relocate_functions<size, big_endian>::rela16(view, object, | |
2473 | psymval, addend); | |
2474 | break; | |
2475 | ||
2476 | case elfcpp::R_SPARC_32: | |
2477 | if (!parameters->options().output_is_position_independent()) | |
9efe6174 ILT |
2478 | Relocate_functions<size, big_endian>::rela32(view, object, |
2479 | psymval, addend); | |
f5314dd5 DM |
2480 | break; |
2481 | ||
2482 | case elfcpp::R_SPARC_DISP8: | |
2483 | Reloc::disp8(view, object, psymval, addend, address); | |
2484 | break; | |
2485 | ||
2486 | case elfcpp::R_SPARC_DISP16: | |
2487 | Reloc::disp16(view, object, psymval, addend, address); | |
2488 | break; | |
2489 | ||
2490 | case elfcpp::R_SPARC_DISP32: | |
2491 | Reloc::disp32(view, object, psymval, addend, address); | |
2492 | break; | |
2493 | ||
2494 | case elfcpp::R_SPARC_DISP64: | |
2495 | Reloc::disp64(view, object, psymval, addend, address); | |
2496 | break; | |
2497 | ||
2498 | case elfcpp::R_SPARC_WDISP30: | |
2499 | case elfcpp::R_SPARC_WPLT30: | |
2500 | Reloc::wdisp30(view, object, psymval, addend, address); | |
2501 | break; | |
2502 | ||
2503 | case elfcpp::R_SPARC_WDISP22: | |
2504 | Reloc::wdisp22(view, object, psymval, addend, address); | |
2505 | break; | |
2506 | ||
2507 | case elfcpp::R_SPARC_WDISP19: | |
2508 | Reloc::wdisp19(view, object, psymval, addend, address); | |
2509 | break; | |
2510 | ||
2511 | case elfcpp::R_SPARC_WDISP16: | |
2512 | Reloc::wdisp16(view, object, psymval, addend, address); | |
2513 | break; | |
2514 | ||
2515 | case elfcpp::R_SPARC_HI22: | |
2516 | Reloc::hi22(view, object, psymval, addend); | |
2517 | break; | |
2518 | ||
2519 | case elfcpp::R_SPARC_22: | |
2520 | Reloc::rela32_22(view, object, psymval, addend); | |
2521 | break; | |
2522 | ||
2523 | case elfcpp::R_SPARC_13: | |
2524 | Reloc::rela32_13(view, object, psymval, addend); | |
2525 | break; | |
2526 | ||
2527 | case elfcpp::R_SPARC_LO10: | |
2528 | Reloc::lo10(view, object, psymval, addend); | |
2529 | break; | |
2530 | ||
2531 | case elfcpp::R_SPARC_GOT10: | |
2532 | Reloc::lo10(view, got_offset, addend); | |
2533 | break; | |
2534 | ||
2535 | case elfcpp::R_SPARC_GOT13: | |
2536 | Reloc::rela32_13(view, got_offset, addend); | |
2537 | break; | |
2538 | ||
2539 | case elfcpp::R_SPARC_GOT22: | |
2540 | Reloc::hi22(view, got_offset, addend); | |
2541 | break; | |
2542 | ||
2543 | case elfcpp::R_SPARC_PC10: | |
2544 | Reloc::pc10(view, object, psymval, addend, address); | |
2545 | break; | |
2546 | ||
2547 | case elfcpp::R_SPARC_PC22: | |
2548 | Reloc::pc22(view, object, psymval, addend, address); | |
2549 | break; | |
2550 | ||
2551 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
2552 | case elfcpp::R_SPARC_UA32: | |
2553 | Reloc::ua32(view, object, psymval, addend); | |
2554 | break; | |
2555 | ||
2556 | case elfcpp::R_SPARC_PLT64: | |
2557 | Relocate_functions<size, big_endian>::rela64(view, object, | |
2558 | psymval, addend); | |
2559 | break; | |
2560 | ||
2561 | case elfcpp::R_SPARC_PLT32: | |
2562 | Relocate_functions<size, big_endian>::rela32(view, object, | |
2563 | psymval, addend); | |
2564 | break; | |
2565 | ||
2566 | case elfcpp::R_SPARC_HIPLT22: | |
2567 | Reloc::hi22(view, object, psymval, addend); | |
2568 | break; | |
2569 | ||
2570 | case elfcpp::R_SPARC_LOPLT10: | |
2571 | Reloc::lo10(view, object, psymval, addend); | |
2572 | break; | |
2573 | ||
2574 | case elfcpp::R_SPARC_PCPLT32: | |
2575 | Reloc::disp32(view, object, psymval, addend, address); | |
2576 | break; | |
2577 | ||
2578 | case elfcpp::R_SPARC_PCPLT22: | |
2579 | Reloc::pcplt22(view, object, psymval, addend, address); | |
2580 | break; | |
2581 | ||
2582 | case elfcpp::R_SPARC_PCPLT10: | |
2583 | Reloc::lo10(view, object, psymval, addend, address); | |
2584 | break; | |
2585 | ||
2586 | case elfcpp::R_SPARC_64: | |
2587 | if (!parameters->options().output_is_position_independent()) | |
2588 | Relocate_functions<size, big_endian>::rela64(view, object, | |
2589 | psymval, addend); | |
2590 | break; | |
2591 | ||
2592 | case elfcpp::R_SPARC_OLO10: | |
2593 | { | |
2594 | unsigned int addend2 = rela.get_r_info() & 0xffffffff; | |
2595 | addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000; | |
2596 | Reloc::olo10(view, object, psymval, addend, addend2); | |
2597 | } | |
2598 | break; | |
2599 | ||
2600 | case elfcpp::R_SPARC_HH22: | |
2601 | Reloc::hh22(view, object, psymval, addend); | |
2602 | break; | |
2603 | ||
2604 | case elfcpp::R_SPARC_PC_HH22: | |
2605 | Reloc::pc_hh22(view, object, psymval, addend, address); | |
2606 | break; | |
2607 | ||
2608 | case elfcpp::R_SPARC_HM10: | |
2609 | Reloc::hm10(view, object, psymval, addend); | |
2610 | break; | |
2611 | ||
2612 | case elfcpp::R_SPARC_PC_HM10: | |
2613 | Reloc::pc_hm10(view, object, psymval, addend, address); | |
2614 | break; | |
2615 | ||
2616 | case elfcpp::R_SPARC_LM22: | |
2617 | Reloc::hi22(view, object, psymval, addend); | |
2618 | break; | |
2619 | ||
2620 | case elfcpp::R_SPARC_PC_LM22: | |
2621 | Reloc::pcplt22(view, object, psymval, addend, address); | |
2622 | break; | |
2623 | ||
2624 | case elfcpp::R_SPARC_11: | |
2625 | Reloc::rela32_11(view, object, psymval, addend); | |
2626 | break; | |
2627 | ||
2628 | case elfcpp::R_SPARC_10: | |
2629 | Reloc::rela32_10(view, object, psymval, addend); | |
2630 | break; | |
2631 | ||
2632 | case elfcpp::R_SPARC_7: | |
2633 | Reloc::rela32_7(view, object, psymval, addend); | |
2634 | break; | |
2635 | ||
2636 | case elfcpp::R_SPARC_6: | |
2637 | Reloc::rela32_6(view, object, psymval, addend); | |
2638 | break; | |
2639 | ||
2640 | case elfcpp::R_SPARC_5: | |
2641 | Reloc::rela32_5(view, object, psymval, addend); | |
2642 | break; | |
2643 | ||
2644 | case elfcpp::R_SPARC_HIX22: | |
2645 | Reloc::hix22(view, object, psymval, addend); | |
2646 | break; | |
2647 | ||
2648 | case elfcpp::R_SPARC_LOX10: | |
2649 | Reloc::lox10(view, object, psymval, addend); | |
2650 | break; | |
2651 | ||
2652 | case elfcpp::R_SPARC_H44: | |
2653 | Reloc::h44(view, object, psymval, addend); | |
2654 | break; | |
2655 | ||
2656 | case elfcpp::R_SPARC_M44: | |
2657 | Reloc::m44(view, object, psymval, addend); | |
2658 | break; | |
2659 | ||
2660 | case elfcpp::R_SPARC_L44: | |
2661 | Reloc::l44(view, object, psymval, addend); | |
2662 | break; | |
2663 | ||
2664 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
2665 | case elfcpp::R_SPARC_UA64: | |
2666 | Reloc::ua64(view, object, psymval, addend); | |
2667 | break; | |
2668 | ||
2669 | case elfcpp::R_SPARC_UA16: | |
2670 | Reloc::ua16(view, object, psymval, addend); | |
2671 | break; | |
2672 | ||
2673 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2674 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2675 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2676 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2677 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
2678 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2679 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2680 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2681 | case elfcpp::R_SPARC_TLS_LDO_HIX22: | |
2682 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2683 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2684 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
2685 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2686 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2687 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 2688 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
2689 | case elfcpp::R_SPARC_TLS_LE_HIX22: |
2690 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2691 | this->relocate_tls(relinfo, target, relnum, rela, | |
2692 | r_type, gsym, psymval, view, | |
2693 | address, view_size); | |
2694 | break; | |
2695 | ||
2696 | case elfcpp::R_SPARC_COPY: | |
2697 | case elfcpp::R_SPARC_GLOB_DAT: | |
2698 | case elfcpp::R_SPARC_JMP_SLOT: | |
2699 | case elfcpp::R_SPARC_RELATIVE: | |
2700 | // These are outstanding tls relocs, which are unexpected when | |
2701 | // linking. | |
2702 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
2703 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
2704 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
2705 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
2706 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2707 | _("unexpected reloc %u in object file"), | |
2708 | r_type); | |
2709 | break; | |
2710 | ||
2711 | default: | |
2712 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2713 | _("unsupported reloc %u"), | |
2714 | r_type); | |
2715 | break; | |
2716 | } | |
2717 | ||
2718 | return true; | |
2719 | } | |
2720 | ||
2721 | // Perform a TLS relocation. | |
2722 | ||
2723 | template<int size, bool big_endian> | |
2724 | inline void | |
2725 | Target_sparc<size, big_endian>::Relocate::relocate_tls( | |
2726 | const Relocate_info<size, big_endian>* relinfo, | |
2727 | Target_sparc<size, big_endian>* target, | |
2728 | size_t relnum, | |
2729 | const elfcpp::Rela<size, big_endian>& rela, | |
2730 | unsigned int r_type, | |
2731 | const Sized_symbol<size>* gsym, | |
2732 | const Symbol_value<size>* psymval, | |
2733 | unsigned char* view, | |
2734 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
2735 | section_size_type) | |
2736 | { | |
2737 | Output_segment* tls_segment = relinfo->layout->tls_segment(); | |
2738 | typedef Sparc_relocate_functions<size, big_endian> Reloc; | |
2739 | const Sized_relobj<size, big_endian>* object = relinfo->object; | |
2740 | typedef typename elfcpp::Swap<32, true>::Valtype Insntype; | |
2741 | ||
2742 | const elfcpp::Elf_Xword addend = rela.get_r_addend(); | |
2743 | typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0); | |
2744 | ||
2745 | const bool is_final = | |
2746 | (gsym == NULL | |
2747 | ? !parameters->options().output_is_position_independent() | |
2748 | : gsym->final_value_is_known()); | |
2749 | const tls::Tls_optimization optimized_type | |
2750 | = optimize_tls_reloc(is_final, r_type); | |
2751 | ||
2752 | switch (r_type) | |
2753 | { | |
2754 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2755 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2756 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2757 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2758 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2759 | { | |
2760 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2761 | Insntype val; | |
2762 | ||
2763 | value -= tls_segment->memsz(); | |
2764 | ||
2765 | switch (r_type) | |
2766 | { | |
2767 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2768 | // TLS_GD_HI22 --> TLS_LE_HIX22 | |
2769 | Reloc::hix22(view, value, addend); | |
2770 | break; | |
2771 | ||
2772 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2773 | // TLS_GD_LO10 --> TLS_LE_LOX10 | |
2774 | Reloc::lox10(view, value, addend); | |
2775 | break; | |
2776 | ||
2777 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2778 | // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3 | |
2779 | val = elfcpp::Swap<32, true>::readval(wv); | |
2780 | val = (val & ~0x7c000) | 0x1c000; | |
2781 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2782 | break; | |
2783 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2784 | // call __tls_get_addr --> nop | |
2785 | elfcpp::Swap<32, true>::writeval(wv, sparc_nop); | |
2786 | break; | |
2787 | } | |
2788 | break; | |
2789 | } | |
2790 | else | |
2791 | { | |
2792 | unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE | |
2793 | ? GOT_TYPE_TLS_OFFSET | |
2794 | : GOT_TYPE_TLS_PAIR); | |
2795 | if (gsym != NULL) | |
2796 | { | |
2797 | gold_assert(gsym->has_got_offset(got_type)); | |
2798 | value = gsym->got_offset(got_type); | |
2799 | } | |
2800 | else | |
2801 | { | |
2802 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
2803 | gold_assert(object->local_has_got_offset(r_sym, got_type)); | |
2804 | value = object->local_got_offset(r_sym, got_type); | |
2805 | } | |
2806 | if (optimized_type == tls::TLSOPT_TO_IE) | |
2807 | { | |
2808 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2809 | Insntype val; | |
2810 | ||
2811 | switch (r_type) | |
2812 | { | |
2813 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2814 | // TLS_GD_HI22 --> TLS_IE_HI22 | |
2815 | Reloc::hi22(view, value, addend); | |
2816 | break; | |
2817 | ||
2818 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2819 | // TLS_GD_LO10 --> TLS_IE_LO10 | |
2820 | Reloc::lo10(view, value, addend); | |
2821 | break; | |
2822 | ||
2823 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2824 | // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3 | |
2825 | val = elfcpp::Swap<32, true>::readval(wv); | |
2826 | ||
2827 | if (size == 64) | |
2828 | val |= 0xc0580000; | |
2829 | else | |
2830 | val |= 0xc0000000; | |
2831 | ||
2832 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2833 | break; | |
2834 | ||
2835 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2836 | // The compiler can put the TLS_GD_ADD instruction | |
2837 | // into the delay slot of the call. If so, we need | |
2838 | // to transpose the two instructions so that the | |
2839 | // the new sequence works properly. | |
2840 | // | |
2841 | // The test we use is if the instruction in the | |
2842 | // delay slot is an add with destination register | |
2843 | // equal to %o0 | |
2844 | val = elfcpp::Swap<32, true>::readval(wv + 1); | |
2845 | if ((val & 0x81f80000) == 0x80000000 | |
2846 | && ((val >> 25) & 0x1f) == 0x8) | |
2847 | { | |
2848 | if (size == 64) | |
2849 | val |= 0xc0580000; | |
2850 | else | |
2851 | val |= 0xc0000000; | |
2852 | ||
2853 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2854 | ||
2855 | wv += 1; | |
2856 | this->ignore_gd_add_ = true; | |
2857 | } | |
2858 | ||
2859 | // call __tls_get_addr --> add %g7, %o0, %o0 | |
2860 | elfcpp::Swap<32, true>::writeval(wv, 0x9001c008); | |
2861 | break; | |
2862 | } | |
2863 | break; | |
2864 | } | |
2865 | else if (optimized_type == tls::TLSOPT_NONE) | |
2866 | { | |
2867 | switch (r_type) | |
2868 | { | |
2869 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2870 | Reloc::hi22(view, value, addend); | |
2871 | break; | |
2872 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2873 | Reloc::lo10(view, value, addend); | |
2874 | break; | |
2875 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2876 | break; | |
2877 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2878 | { | |
2879 | Symbol_value<size> symval; | |
2880 | elfcpp::Elf_Xword value; | |
2881 | Symbol* tsym; | |
2882 | ||
2883 | tsym = target->tls_get_addr_sym_; | |
2884 | gold_assert(tsym); | |
2885 | value = (target->plt_section()->address() + | |
2886 | tsym->plt_offset()); | |
2887 | symval.set_output_value(value); | |
2888 | Reloc::wdisp30(view, object, &symval, addend, address); | |
2889 | } | |
2890 | break; | |
2891 | } | |
2892 | break; | |
2893 | } | |
2894 | } | |
2895 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2896 | _("unsupported reloc %u"), | |
2897 | r_type); | |
2898 | break; | |
2899 | ||
2900 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
2901 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2902 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2903 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2904 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2905 | { | |
2906 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2907 | ||
2908 | switch (r_type) | |
2909 | { | |
2910 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
2911 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2912 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2913 | elfcpp::Swap<32, true>::writeval(wv, sparc_nop); | |
2914 | break; | |
2915 | ||
2916 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2917 | elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0); | |
2918 | break; | |
2919 | } | |
2920 | break; | |
2921 | } | |
2922 | else if (optimized_type == tls::TLSOPT_NONE) | |
2923 | { | |
2924 | // Relocate the field with the offset of the GOT entry for | |
2925 | // the module index. | |
2926 | unsigned int got_offset; | |
2927 | ||
2928 | got_offset = target->got_mod_index_entry(NULL, NULL, NULL); | |
2929 | switch (r_type) | |
2930 | { | |
2931 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
2932 | Reloc::hi22(view, got_offset, addend); | |
2933 | break; | |
2934 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2935 | Reloc::lo10(view, got_offset, addend); | |
2936 | break; | |
2937 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2938 | break; | |
2939 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2940 | { | |
2941 | Symbol_value<size> symval; | |
2942 | elfcpp::Elf_Xword value; | |
2943 | Symbol* tsym; | |
2944 | ||
2945 | tsym = target->tls_get_addr_sym_; | |
2946 | gold_assert(tsym); | |
2947 | value = (target->plt_section()->address() + | |
2948 | tsym->plt_offset()); | |
2949 | symval.set_output_value(value); | |
2950 | Reloc::wdisp30(view, object, &symval, addend, address); | |
2951 | } | |
2952 | break; | |
2953 | } | |
2954 | break; | |
2955 | } | |
2956 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2957 | _("unsupported reloc %u"), | |
2958 | r_type); | |
2959 | break; | |
2960 | ||
2961 | // These relocs can appear in debugging sections, in which case | |
2962 | // we won't see the TLS_LDM relocs. The local_dynamic_type | |
2963 | // field tells us this. | |
2964 | case elfcpp::R_SPARC_TLS_LDO_HIX22: | |
2965 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2966 | { | |
2967 | value -= tls_segment->memsz(); | |
2968 | Reloc::hix22(view, value, addend); | |
2969 | } | |
2970 | else | |
2971 | Reloc::ldo_hix22(view, value, addend); | |
2972 | break; | |
2973 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2974 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2975 | { | |
2976 | value -= tls_segment->memsz(); | |
2977 | Reloc::lox10(view, value, addend); | |
2978 | } | |
2979 | else | |
2980 | Reloc::ldo_lox10(view, value, addend); | |
2981 | break; | |
2982 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2983 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2984 | { | |
2985 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2986 | Insntype val; | |
2987 | ||
2988 | // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3 | |
2989 | val = elfcpp::Swap<32, true>::readval(wv); | |
2990 | val = (val & ~0x7c000) | 0x1c000; | |
2991 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2992 | } | |
2993 | break; | |
2994 | ||
2995 | // When optimizing IE --> LE, the only relocation that is handled | |
2996 | // differently is R_SPARC_TLS_IE_LD, it is rewritten from | |
2997 | // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is | |
2998 | // rs2 and rd are the same. | |
2999 | case elfcpp::R_SPARC_TLS_IE_LD: | |
3000 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
3001 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3002 | { | |
3003 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
3004 | Insntype val = elfcpp::Swap<32, true>::readval(wv); | |
3005 | Insntype rs2 = val & 0x1f; | |
3006 | Insntype rd = (val >> 25) & 0x1f; | |
3007 | ||
3008 | if (rs2 == rd) | |
3009 | val = sparc_nop; | |
3010 | else | |
3011 | val = sparc_mov | (val & 0x3e00001f); | |
3012 | ||
3013 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3014 | } | |
3015 | break; | |
3016 | ||
3017 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
3018 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
3019 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3020 | { | |
3021 | value -= tls_segment->memsz(); | |
3022 | switch (r_type) | |
3023 | { | |
3024 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
3025 | // IE_HI22 --> LE_HIX22 | |
3026 | Reloc::hix22(view, value, addend); | |
3027 | break; | |
3028 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
3029 | // IE_LO10 --> LE_LOX10 | |
3030 | Reloc::lox10(view, value, addend); | |
3031 | break; | |
3032 | } | |
3033 | break; | |
3034 | } | |
3035 | else if (optimized_type == tls::TLSOPT_NONE) | |
3036 | { | |
3037 | // Relocate the field with the offset of the GOT entry for | |
3038 | // the tp-relative offset of the symbol. | |
3039 | if (gsym != NULL) | |
3040 | { | |
3041 | gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET)); | |
3042 | value = gsym->got_offset(GOT_TYPE_TLS_OFFSET); | |
3043 | } | |
3044 | else | |
3045 | { | |
3046 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
3047 | gold_assert(object->local_has_got_offset(r_sym, | |
3048 | GOT_TYPE_TLS_OFFSET)); | |
3049 | value = object->local_got_offset(r_sym, | |
3050 | GOT_TYPE_TLS_OFFSET); | |
3051 | } | |
3052 | switch (r_type) | |
3053 | { | |
3054 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
3055 | Reloc::hi22(view, value, addend); | |
3056 | break; | |
3057 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
3058 | Reloc::lo10(view, value, addend); | |
3059 | break; | |
3060 | } | |
3061 | break; | |
3062 | } | |
3063 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
3064 | _("unsupported reloc %u"), | |
3065 | r_type); | |
3066 | break; | |
3067 | ||
9efe6174 ILT |
3068 | case elfcpp::R_SPARC_TLS_IE_ADD: |
3069 | // This seems to be mainly so that we can find the addition | |
3070 | // instruction if there is one. There doesn't seem to be any | |
3071 | // actual relocation to apply. | |
3072 | break; | |
3073 | ||
f5314dd5 DM |
3074 | case elfcpp::R_SPARC_TLS_LE_HIX22: |
3075 | // If we're creating a shared library, a dynamic relocation will | |
3076 | // have been created for this location, so do not apply it now. | |
3077 | if (!parameters->options().shared()) | |
3078 | { | |
3079 | value -= tls_segment->memsz(); | |
3080 | Reloc::hix22(view, value, addend); | |
3081 | } | |
3082 | break; | |
3083 | ||
3084 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
3085 | // If we're creating a shared library, a dynamic relocation will | |
3086 | // have been created for this location, so do not apply it now. | |
3087 | if (!parameters->options().shared()) | |
3088 | { | |
3089 | value -= tls_segment->memsz(); | |
3090 | Reloc::lox10(view, value, addend); | |
3091 | } | |
3092 | break; | |
3093 | } | |
3094 | } | |
3095 | ||
3096 | // Relocate section data. | |
3097 | ||
3098 | template<int size, bool big_endian> | |
3099 | void | |
3100 | Target_sparc<size, big_endian>::relocate_section( | |
3101 | const Relocate_info<size, big_endian>* relinfo, | |
3102 | unsigned int sh_type, | |
3103 | const unsigned char* prelocs, | |
3104 | size_t reloc_count, | |
3105 | Output_section* output_section, | |
3106 | bool needs_special_offset_handling, | |
3107 | unsigned char* view, | |
3108 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
3109 | section_size_type view_size) | |
3110 | { | |
3111 | typedef Target_sparc<size, big_endian> Sparc; | |
3112 | typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate; | |
3113 | ||
3114 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
3115 | ||
3116 | gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA, | |
3117 | Sparc_relocate>( | |
3118 | relinfo, | |
3119 | this, | |
3120 | prelocs, | |
3121 | reloc_count, | |
3122 | output_section, | |
3123 | needs_special_offset_handling, | |
3124 | view, | |
3125 | address, | |
3126 | view_size); | |
3127 | } | |
3128 | ||
3129 | // Return the size of a relocation while scanning during a relocatable | |
3130 | // link. | |
3131 | ||
3132 | template<int size, bool big_endian> | |
3133 | unsigned int | |
3134 | Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc( | |
3135 | unsigned int, | |
3136 | Relobj*) | |
3137 | { | |
3138 | // We are always SHT_RELA, so we should never get here. | |
3139 | gold_unreachable(); | |
3140 | return 0; | |
3141 | } | |
3142 | ||
3143 | // Scan the relocs during a relocatable link. | |
3144 | ||
3145 | template<int size, bool big_endian> | |
3146 | void | |
3147 | Target_sparc<size, big_endian>::scan_relocatable_relocs( | |
3148 | const General_options& options, | |
3149 | Symbol_table* symtab, | |
3150 | Layout* layout, | |
3151 | Sized_relobj<size, big_endian>* object, | |
3152 | unsigned int data_shndx, | |
3153 | unsigned int sh_type, | |
3154 | const unsigned char* prelocs, | |
3155 | size_t reloc_count, | |
3156 | Output_section* output_section, | |
3157 | bool needs_special_offset_handling, | |
3158 | size_t local_symbol_count, | |
3159 | const unsigned char* plocal_symbols, | |
3160 | Relocatable_relocs* rr) | |
3161 | { | |
3162 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
3163 | ||
3164 | typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA, | |
3165 | Relocatable_size_for_reloc> Scan_relocatable_relocs; | |
3166 | ||
3167 | gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA, | |
3168 | Scan_relocatable_relocs>( | |
3169 | options, | |
3170 | symtab, | |
3171 | layout, | |
3172 | object, | |
3173 | data_shndx, | |
3174 | prelocs, | |
3175 | reloc_count, | |
3176 | output_section, | |
3177 | needs_special_offset_handling, | |
3178 | local_symbol_count, | |
3179 | plocal_symbols, | |
3180 | rr); | |
3181 | } | |
3182 | ||
3183 | // Relocate a section during a relocatable link. | |
3184 | ||
3185 | template<int size, bool big_endian> | |
3186 | void | |
3187 | Target_sparc<size, big_endian>::relocate_for_relocatable( | |
3188 | const Relocate_info<size, big_endian>* relinfo, | |
3189 | unsigned int sh_type, | |
3190 | const unsigned char* prelocs, | |
3191 | size_t reloc_count, | |
3192 | Output_section* output_section, | |
3193 | off_t offset_in_output_section, | |
3194 | const Relocatable_relocs* rr, | |
3195 | unsigned char* view, | |
3196 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
3197 | section_size_type view_size, | |
3198 | unsigned char* reloc_view, | |
3199 | section_size_type reloc_view_size) | |
3200 | { | |
3201 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
3202 | ||
3203 | gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>( | |
3204 | relinfo, | |
3205 | prelocs, | |
3206 | reloc_count, | |
3207 | output_section, | |
3208 | offset_in_output_section, | |
3209 | rr, | |
3210 | view, | |
3211 | view_address, | |
3212 | view_size, | |
3213 | reloc_view, | |
3214 | reloc_view_size); | |
3215 | } | |
3216 | ||
3217 | // Return the value to use for a dynamic which requires special | |
3218 | // treatment. This is how we support equality comparisons of function | |
3219 | // pointers across shared library boundaries, as described in the | |
3220 | // processor specific ABI supplement. | |
3221 | ||
3222 | template<int size, bool big_endian> | |
3223 | uint64_t | |
3224 | Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
3225 | { | |
3226 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
3227 | return this->plt_section()->address() + gsym->plt_offset(); | |
3228 | } | |
3229 | ||
3230 | // The selector for sparc object files. | |
3231 | ||
3232 | template<int size, bool big_endian> | |
3233 | class Target_selector_sparc : public Target_selector | |
3234 | { | |
3235 | public: | |
3236 | Target_selector_sparc() | |
3237 | : Target_selector(elfcpp::EM_NONE, size, big_endian, | |
3238 | (size == 64 ? "elf64-sparc" : "elf32-sparc")) | |
3239 | { } | |
3240 | ||
f5314dd5 DM |
3241 | Target* do_recognize(int machine, int, int) |
3242 | { | |
3243 | switch (size) | |
3244 | { | |
3245 | case 64: | |
3246 | if (machine != elfcpp::EM_SPARCV9) | |
3247 | return NULL; | |
3248 | break; | |
3249 | ||
3250 | case 32: | |
3251 | if (machine != elfcpp::EM_SPARC | |
3252 | && machine != elfcpp::EM_SPARC32PLUS) | |
3253 | return NULL; | |
3254 | break; | |
3255 | ||
3256 | default: | |
3257 | return NULL; | |
3258 | } | |
3259 | ||
7f055c20 | 3260 | return this->instantiate_target(); |
f5314dd5 DM |
3261 | } |
3262 | ||
3263 | Target* do_instantiate_target() | |
7f055c20 | 3264 | { return new Target_sparc<size, big_endian>(); } |
f5314dd5 DM |
3265 | }; |
3266 | ||
3267 | Target_selector_sparc<32, true> target_selector_sparc32; | |
3268 | Target_selector_sparc<64, true> target_selector_sparc64; | |
3269 | ||
3270 | } // End anonymous namespace. |