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f5314dd5 DM |
1 | // sparc.cc -- sparc target support for gold. |
2 | ||
82704155 | 3 | // Copyright (C) 2008-2019 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" | |
f345227a | 43 | #include "gc.h" |
f5314dd5 DM |
44 | |
45 | namespace | |
46 | { | |
47 | ||
48 | using namespace gold; | |
49 | ||
50 | template<int size, bool big_endian> | |
51 | class Output_data_plt_sparc; | |
52 | ||
53 | template<int size, bool big_endian> | |
54 | class Target_sparc : public Sized_target<size, big_endian> | |
55 | { | |
56 | public: | |
57 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
58 | ||
59 | Target_sparc() | |
60 | : Sized_target<size, big_endian>(&sparc_info), | |
8c2bf391 | 61 | got_(NULL), plt_(NULL), rela_dyn_(NULL), rela_ifunc_(NULL), |
43819297 | 62 | copy_relocs_(elfcpp::R_SPARC_COPY), |
a4d85145 DM |
63 | got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL), |
64 | elf_machine_(sparc_info.machine_code), elf_flags_(0), | |
dc1c8a16 | 65 | elf_flags_set_(false), register_syms_() |
f5314dd5 DM |
66 | { |
67 | } | |
68 | ||
dc1c8a16 CC |
69 | // Make a new symbol table entry. |
70 | Sized_symbol<size>* | |
71 | make_symbol(const char*, elfcpp::STT, Object*, unsigned int, uint64_t); | |
72 | ||
2e702c99 | 73 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
74 | // garbage collection. |
75 | void | |
ad0f2072 | 76 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
77 | Layout* layout, |
78 | Sized_relobj_file<size, big_endian>* object, | |
79 | unsigned int data_shndx, | |
80 | unsigned int sh_type, | |
81 | const unsigned char* prelocs, | |
82 | size_t reloc_count, | |
83 | Output_section* output_section, | |
84 | bool needs_special_offset_handling, | |
85 | size_t local_symbol_count, | |
86 | const unsigned char* plocal_symbols); | |
6d03d481 | 87 | |
f5314dd5 DM |
88 | // Scan the relocations to look for symbol adjustments. |
89 | void | |
ad0f2072 | 90 | scan_relocs(Symbol_table* symtab, |
f5314dd5 | 91 | Layout* layout, |
6fa2a40b | 92 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
93 | unsigned int data_shndx, |
94 | unsigned int sh_type, | |
95 | const unsigned char* prelocs, | |
96 | size_t reloc_count, | |
97 | Output_section* output_section, | |
98 | bool needs_special_offset_handling, | |
99 | size_t local_symbol_count, | |
100 | const unsigned char* plocal_symbols); | |
101 | // Finalize the sections. | |
102 | void | |
f59f41f3 | 103 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
f5314dd5 DM |
104 | |
105 | // Return the value to use for a dynamic which requires special | |
106 | // treatment. | |
107 | uint64_t | |
108 | do_dynsym_value(const Symbol*) const; | |
109 | ||
110 | // Relocate a section. | |
111 | void | |
112 | relocate_section(const Relocate_info<size, big_endian>*, | |
113 | unsigned int sh_type, | |
114 | const unsigned char* prelocs, | |
115 | size_t reloc_count, | |
116 | Output_section* output_section, | |
117 | bool needs_special_offset_handling, | |
118 | unsigned char* view, | |
119 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
364c7fa5 ILT |
120 | section_size_type view_size, |
121 | const Reloc_symbol_changes*); | |
f5314dd5 DM |
122 | |
123 | // Scan the relocs during a relocatable link. | |
124 | void | |
ad0f2072 | 125 | scan_relocatable_relocs(Symbol_table* symtab, |
f5314dd5 | 126 | Layout* layout, |
6fa2a40b | 127 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
128 | unsigned int data_shndx, |
129 | unsigned int sh_type, | |
130 | const unsigned char* prelocs, | |
131 | size_t reloc_count, | |
132 | Output_section* output_section, | |
133 | bool needs_special_offset_handling, | |
134 | size_t local_symbol_count, | |
135 | const unsigned char* plocal_symbols, | |
136 | Relocatable_relocs*); | |
137 | ||
4d625b70 CC |
138 | // Scan the relocs for --emit-relocs. |
139 | void | |
140 | emit_relocs_scan(Symbol_table* symtab, | |
141 | Layout* layout, | |
142 | Sized_relobj_file<size, big_endian>* object, | |
143 | unsigned int data_shndx, | |
144 | unsigned int sh_type, | |
145 | const unsigned char* prelocs, | |
146 | size_t reloc_count, | |
147 | Output_section* output_section, | |
148 | bool needs_special_offset_handling, | |
149 | size_t local_symbol_count, | |
150 | const unsigned char* plocal_syms, | |
151 | Relocatable_relocs* rr); | |
152 | ||
7404fe1b | 153 | // Emit relocations for a section. |
f5314dd5 | 154 | void |
7404fe1b AM |
155 | relocate_relocs(const Relocate_info<size, big_endian>*, |
156 | unsigned int sh_type, | |
157 | const unsigned char* prelocs, | |
158 | size_t reloc_count, | |
159 | Output_section* output_section, | |
62fe925a RM |
160 | typename elfcpp::Elf_types<size>::Elf_Off |
161 | offset_in_output_section, | |
7404fe1b AM |
162 | unsigned char* view, |
163 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
164 | section_size_type view_size, | |
165 | unsigned char* reloc_view, | |
166 | section_size_type reloc_view_size); | |
167 | ||
f5314dd5 DM |
168 | // Return whether SYM is defined by the ABI. |
169 | bool | |
9c2d0ef9 | 170 | do_is_defined_by_abi(const Symbol* sym) const |
dc1c8a16 | 171 | { return strcmp(sym->name(), "___tls_get_addr") == 0; } |
f5314dd5 | 172 | |
8c2bf391 DM |
173 | // Return the PLT address to use for a global symbol. |
174 | uint64_t | |
175 | do_plt_address_for_global(const Symbol* gsym) const | |
176 | { return this->plt_section()->address_for_global(gsym); } | |
177 | ||
178 | uint64_t | |
179 | do_plt_address_for_local(const Relobj* relobj, unsigned int symndx) const | |
180 | { return this->plt_section()->address_for_local(relobj, symndx); } | |
181 | ||
9efe6174 ILT |
182 | // Return whether there is a GOT section. |
183 | bool | |
184 | has_got_section() const | |
185 | { return this->got_ != NULL; } | |
186 | ||
f5314dd5 DM |
187 | // Return the size of the GOT section. |
188 | section_size_type | |
0e70b911 | 189 | got_size() const |
f5314dd5 DM |
190 | { |
191 | gold_assert(this->got_ != NULL); | |
192 | return this->got_->data_size(); | |
193 | } | |
194 | ||
0e70b911 CC |
195 | // Return the number of entries in the GOT. |
196 | unsigned int | |
197 | got_entry_count() const | |
198 | { | |
199 | if (this->got_ == NULL) | |
200 | return 0; | |
201 | return this->got_size() / (size / 8); | |
202 | } | |
203 | ||
2a1079e8 DM |
204 | // Return the address of the GOT. |
205 | uint64_t | |
206 | got_address() const | |
207 | { | |
208 | if (this->got_ == NULL) | |
209 | return 0; | |
210 | return this->got_->address(); | |
211 | } | |
212 | ||
0e70b911 CC |
213 | // Return the number of entries in the PLT. |
214 | unsigned int | |
215 | plt_entry_count() const; | |
216 | ||
217 | // Return the offset of the first non-reserved PLT entry. | |
218 | unsigned int | |
219 | first_plt_entry_offset() const; | |
220 | ||
221 | // Return the size of each PLT entry. | |
222 | unsigned int | |
223 | plt_entry_size() const; | |
224 | ||
a4d85145 DM |
225 | protected: |
226 | // Make an ELF object. | |
227 | Object* | |
228 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
229 | const elfcpp::Ehdr<size, big_endian>& ehdr); | |
230 | ||
231 | void | |
cc84c10b | 232 | do_adjust_elf_header(unsigned char* view, int len); |
a4d85145 | 233 | |
f5314dd5 DM |
234 | private: |
235 | ||
236 | // The class which scans relocations. | |
32b769e1 | 237 | class Scan |
f5314dd5 | 238 | { |
32b769e1 DM |
239 | public: |
240 | Scan() | |
241 | : issued_non_pic_error_(false) | |
242 | { } | |
243 | ||
95a2c8d6 RS |
244 | static inline int |
245 | get_reference_flags(unsigned int r_type); | |
246 | ||
f5314dd5 | 247 | inline void |
ad0f2072 | 248 | local(Symbol_table* symtab, Layout* layout, Target_sparc* target, |
6fa2a40b | 249 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
250 | unsigned int data_shndx, |
251 | Output_section* output_section, | |
252 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
bfdfa4cd AM |
253 | const elfcpp::Sym<size, big_endian>& lsym, |
254 | bool is_discarded); | |
f5314dd5 DM |
255 | |
256 | inline void | |
ad0f2072 | 257 | global(Symbol_table* symtab, Layout* layout, Target_sparc* target, |
6fa2a40b | 258 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
259 | unsigned int data_shndx, |
260 | Output_section* output_section, | |
261 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
262 | Symbol* gsym); | |
263 | ||
21bb3914 ST |
264 | inline bool |
265 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
2e702c99 RM |
266 | Target_sparc* , |
267 | Sized_relobj_file<size, big_endian>* , | |
21bb3914 | 268 | unsigned int , |
2e702c99 RM |
269 | Output_section* , |
270 | const elfcpp::Rela<size, big_endian>& , | |
271 | unsigned int , | |
272 | const elfcpp::Sym<size, big_endian>&) | |
21bb3914 ST |
273 | { return false; } |
274 | ||
275 | inline bool | |
276 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
2e702c99 RM |
277 | Target_sparc* , |
278 | Sized_relobj_file<size, big_endian>* , | |
279 | unsigned int , | |
280 | Output_section* , | |
281 | const elfcpp::Rela<size, | |
282 | big_endian>& , | |
283 | unsigned int , Symbol*) | |
21bb3914 ST |
284 | { return false; } |
285 | ||
286 | ||
32b769e1 | 287 | private: |
f5314dd5 | 288 | static void |
6fa2a40b | 289 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
f5314dd5 DM |
290 | unsigned int r_type); |
291 | ||
292 | static void | |
6fa2a40b | 293 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
f5314dd5 DM |
294 | unsigned int r_type, Symbol*); |
295 | ||
296 | static void | |
297 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
298 | Target_sparc* target); | |
32b769e1 DM |
299 | |
300 | void | |
301 | check_non_pic(Relobj*, unsigned int r_type); | |
302 | ||
8c2bf391 DM |
303 | bool |
304 | reloc_needs_plt_for_ifunc(Sized_relobj_file<size, big_endian>*, | |
305 | unsigned int r_type); | |
306 | ||
32b769e1 DM |
307 | // Whether we have issued an error about a non-PIC compilation. |
308 | bool issued_non_pic_error_; | |
f5314dd5 DM |
309 | }; |
310 | ||
311 | // The class which implements relocation. | |
312 | class Relocate | |
313 | { | |
314 | public: | |
315 | Relocate() | |
abd242a9 | 316 | : ignore_gd_add_(false), reloc_adjust_addr_(NULL) |
f5314dd5 DM |
317 | { } |
318 | ||
319 | ~Relocate() | |
320 | { | |
321 | if (this->ignore_gd_add_) | |
322 | { | |
323 | // FIXME: This needs to specify the location somehow. | |
324 | gold_error(_("missing expected TLS relocation")); | |
325 | } | |
326 | } | |
327 | ||
328 | // Do a relocation. Return false if the caller should not issue | |
329 | // any warnings about this relocation. | |
330 | inline bool | |
91a65d2f AM |
331 | relocate(const Relocate_info<size, big_endian>*, unsigned int, |
332 | Target_sparc*, Output_section*, size_t, const unsigned char*, | |
333 | const Sized_symbol<size>*, const Symbol_value<size>*, | |
334 | unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr, | |
f5314dd5 DM |
335 | section_size_type); |
336 | ||
337 | private: | |
338 | // Do a TLS relocation. | |
339 | inline void | |
340 | relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target, | |
2e702c99 | 341 | size_t relnum, const elfcpp::Rela<size, big_endian>&, |
f5314dd5 DM |
342 | unsigned int r_type, const Sized_symbol<size>*, |
343 | const Symbol_value<size>*, | |
344 | unsigned char*, | |
345 | typename elfcpp::Elf_types<size>::Elf_Addr, | |
346 | section_size_type); | |
347 | ||
a5a5f7a3 DM |
348 | inline void |
349 | relax_call(Target_sparc<size, big_endian>* target, | |
350 | unsigned char* view, | |
351 | const elfcpp::Rela<size, big_endian>& rela, | |
352 | section_size_type view_size); | |
353 | ||
f5314dd5 DM |
354 | // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD |
355 | bool ignore_gd_add_; | |
abd242a9 DM |
356 | |
357 | // If we hit a reloc at this view address, adjust it back by 4 bytes. | |
358 | unsigned char *reloc_adjust_addr_; | |
f5314dd5 DM |
359 | }; |
360 | ||
f5314dd5 DM |
361 | // Get the GOT section, creating it if necessary. |
362 | Output_data_got<size, big_endian>* | |
363 | got_section(Symbol_table*, Layout*); | |
364 | ||
8c2bf391 DM |
365 | // Create the PLT section. |
366 | void | |
367 | make_plt_section(Symbol_table* symtab, Layout* layout); | |
368 | ||
f5314dd5 DM |
369 | // Create a PLT entry for a global symbol. |
370 | void | |
371 | make_plt_entry(Symbol_table*, Layout*, Symbol*); | |
372 | ||
8c2bf391 DM |
373 | // Create a PLT entry for a local STT_GNU_IFUNC symbol. |
374 | void | |
375 | make_local_ifunc_plt_entry(Symbol_table*, Layout*, | |
376 | Sized_relobj_file<size, big_endian>* relobj, | |
377 | unsigned int local_sym_index); | |
378 | ||
f5314dd5 DM |
379 | // Create a GOT entry for the TLS module index. |
380 | unsigned int | |
381 | got_mod_index_entry(Symbol_table* symtab, Layout* layout, | |
6fa2a40b | 382 | Sized_relobj_file<size, big_endian>* object); |
f5314dd5 DM |
383 | |
384 | // Return the gsym for "__tls_get_addr". Cache if not already | |
385 | // cached. | |
386 | Symbol* | |
387 | tls_get_addr_sym(Symbol_table* symtab) | |
388 | { | |
389 | if (!this->tls_get_addr_sym_) | |
390 | this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL); | |
391 | gold_assert(this->tls_get_addr_sym_); | |
392 | return this->tls_get_addr_sym_; | |
393 | } | |
394 | ||
395 | // Get the PLT section. | |
8c2bf391 | 396 | Output_data_plt_sparc<size, big_endian>* |
f5314dd5 DM |
397 | plt_section() const |
398 | { | |
399 | gold_assert(this->plt_ != NULL); | |
400 | return this->plt_; | |
401 | } | |
402 | ||
403 | // Get the dynamic reloc section, creating it if necessary. | |
404 | Reloc_section* | |
405 | rela_dyn_section(Layout*); | |
406 | ||
8c2bf391 DM |
407 | // Get the section to use for IFUNC relocations. |
408 | Reloc_section* | |
409 | rela_ifunc_section(Layout*); | |
410 | ||
f5314dd5 DM |
411 | // Copy a relocation against a global symbol. |
412 | void | |
ef9beddf | 413 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 414 | Sized_relobj_file<size, big_endian>* object, |
12c0daef ILT |
415 | unsigned int shndx, Output_section* output_section, |
416 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
417 | { | |
859d7987 | 418 | unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info()); |
12c0daef ILT |
419 | this->copy_relocs_.copy_reloc(symtab, layout, |
420 | symtab->get_sized_symbol<size>(sym), | |
421 | object, shndx, output_section, | |
859d7987 CC |
422 | r_type, reloc.get_r_offset(), |
423 | reloc.get_r_addend(), | |
424 | this->rela_dyn_section(layout)); | |
12c0daef | 425 | } |
f5314dd5 DM |
426 | |
427 | // Information about this specific target which we pass to the | |
428 | // general Target structure. | |
429 | static Target::Target_info sparc_info; | |
430 | ||
431 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
432 | // These values are exposed to the ABI in an incremental link. |
433 | // Do not renumber existing values without changing the version | |
434 | // number of the .gnu_incremental_inputs section. | |
f5314dd5 DM |
435 | enum Got_type |
436 | { | |
437 | GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol | |
438 | GOT_TYPE_TLS_OFFSET = 1, // GOT entry for TLS offset | |
439 | GOT_TYPE_TLS_PAIR = 2, // GOT entry for TLS module/offset pair | |
440 | }; | |
441 | ||
dc1c8a16 CC |
442 | struct Register_symbol |
443 | { | |
444 | Register_symbol() | |
445 | : name(NULL), shndx(0), obj(NULL) | |
446 | { } | |
447 | const char* name; | |
448 | unsigned int shndx; | |
449 | Object* obj; | |
450 | }; | |
451 | ||
f5314dd5 DM |
452 | // The GOT section. |
453 | Output_data_got<size, big_endian>* got_; | |
454 | // The PLT section. | |
455 | Output_data_plt_sparc<size, big_endian>* plt_; | |
456 | // The dynamic reloc section. | |
457 | Reloc_section* rela_dyn_; | |
8c2bf391 DM |
458 | // The section to use for IFUNC relocs. |
459 | Reloc_section* rela_ifunc_; | |
f5314dd5 | 460 | // Relocs saved to avoid a COPY reloc. |
12c0daef | 461 | Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; |
f5314dd5 DM |
462 | // Offset of the GOT entry for the TLS module index; |
463 | unsigned int got_mod_index_offset_; | |
464 | // Cached pointer to __tls_get_addr symbol | |
465 | Symbol* tls_get_addr_sym_; | |
a4d85145 DM |
466 | // Accumulated elf machine type |
467 | elfcpp::Elf_Half elf_machine_; | |
468 | // Accumulated elf header flags | |
469 | elfcpp::Elf_Word elf_flags_; | |
470 | // Whether elf_flags_ has been set for the first time yet | |
471 | bool elf_flags_set_; | |
dc1c8a16 CC |
472 | // STT_SPARC_REGISTER symbols (%g2, %g3, %g6, %g7). |
473 | Register_symbol register_syms_[4]; | |
f5314dd5 DM |
474 | }; |
475 | ||
476 | template<> | |
477 | Target::Target_info Target_sparc<32, true>::sparc_info = | |
478 | { | |
479 | 32, // size | |
480 | true, // is_big_endian | |
481 | elfcpp::EM_SPARC, // machine_code | |
482 | false, // has_make_symbol | |
483 | false, // has_resolve | |
484 | false, // has_code_fill | |
485 | true, // is_default_stack_executable | |
b3ce541e | 486 | false, // can_icf_inline_merge_sections |
f5314dd5 DM |
487 | '\0', // wrap_char |
488 | "/usr/lib/ld.so.1", // dynamic_linker | |
489 | 0x00010000, // default_text_segment_address | |
490 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 491 | 8 * 1024, // common_pagesize (overridable by -z common-page-size) |
2e702c99 RM |
492 | false, // isolate_execinstr |
493 | 0, // rosegment_gap | |
8a5e3e08 ILT |
494 | elfcpp::SHN_UNDEF, // small_common_shndx |
495 | elfcpp::SHN_UNDEF, // large_common_shndx | |
496 | 0, // small_common_section_flags | |
05a352e6 DK |
497 | 0, // large_common_section_flags |
498 | NULL, // attributes_section | |
a67858e0 | 499 | NULL, // attributes_vendor |
8d9743bd MK |
500 | "_start", // entry_symbol_name |
501 | 32, // hash_entry_size | |
bce5a025 | 502 | elfcpp::SHT_PROGBITS, // unwind_section_type |
f5314dd5 DM |
503 | }; |
504 | ||
505 | template<> | |
506 | Target::Target_info Target_sparc<64, true>::sparc_info = | |
507 | { | |
508 | 64, // size | |
509 | true, // is_big_endian | |
510 | elfcpp::EM_SPARCV9, // machine_code | |
dc1c8a16 | 511 | true, // has_make_symbol |
f5314dd5 DM |
512 | false, // has_resolve |
513 | false, // has_code_fill | |
514 | true, // is_default_stack_executable | |
b3ce541e | 515 | false, // can_icf_inline_merge_sections |
f5314dd5 DM |
516 | '\0', // wrap_char |
517 | "/usr/lib/sparcv9/ld.so.1", // dynamic_linker | |
518 | 0x100000, // default_text_segment_address | |
519 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 520 | 8 * 1024, // common_pagesize (overridable by -z common-page-size) |
2e702c99 RM |
521 | false, // isolate_execinstr |
522 | 0, // rosegment_gap | |
8a5e3e08 ILT |
523 | elfcpp::SHN_UNDEF, // small_common_shndx |
524 | elfcpp::SHN_UNDEF, // large_common_shndx | |
525 | 0, // small_common_section_flags | |
05a352e6 DK |
526 | 0, // large_common_section_flags |
527 | NULL, // attributes_section | |
a67858e0 | 528 | NULL, // attributes_vendor |
8d9743bd MK |
529 | "_start", // entry_symbol_name |
530 | 32, // hash_entry_size | |
bce5a025 | 531 | elfcpp::SHT_PROGBITS, // unwind_section_type |
f5314dd5 DM |
532 | }; |
533 | ||
534 | // We have to take care here, even when operating in little-endian | |
535 | // mode, sparc instructions are still big endian. | |
536 | template<int size, bool big_endian> | |
537 | class Sparc_relocate_functions | |
538 | { | |
539 | private: | |
540 | // Do a simple relocation with the addend in the relocation. | |
541 | template<int valsize> | |
542 | static inline void | |
543 | rela(unsigned char* view, | |
544 | unsigned int right_shift, | |
545 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
2ea97941 | 546 | typename elfcpp::Swap<size, big_endian>::Valtype value, |
f5314dd5 DM |
547 | typename elfcpp::Swap<size, big_endian>::Valtype addend) |
548 | { | |
549 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
550 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
551 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
2ea97941 | 552 | Valtype reloc = ((value + addend) >> right_shift); |
f5314dd5 DM |
553 | |
554 | val &= ~dst_mask; | |
555 | reloc &= dst_mask; | |
556 | ||
557 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
558 | } | |
559 | ||
560 | // Do a simple relocation using a symbol value with the addend in | |
561 | // the relocation. | |
562 | template<int valsize> | |
563 | static inline void | |
564 | rela(unsigned char* view, | |
565 | unsigned int right_shift, | |
566 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
6fa2a40b | 567 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
568 | const Symbol_value<size>* psymval, |
569 | typename elfcpp::Swap<valsize, big_endian>::Valtype addend) | |
570 | { | |
571 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
572 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
573 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
574 | Valtype reloc = (psymval->value(object, addend) >> right_shift); | |
575 | ||
576 | val &= ~dst_mask; | |
577 | reloc &= dst_mask; | |
578 | ||
579 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
580 | } | |
581 | ||
582 | // Do a simple relocation using a symbol value with the addend in | |
583 | // the relocation, unaligned. | |
584 | template<int valsize> | |
585 | static inline void | |
586 | rela_ua(unsigned char* view, | |
587 | unsigned int right_shift, elfcpp::Elf_Xword dst_mask, | |
6fa2a40b | 588 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
589 | const Symbol_value<size>* psymval, |
590 | typename elfcpp::Swap<size, big_endian>::Valtype addend) | |
591 | { | |
592 | typedef typename elfcpp::Swap_unaligned<valsize, | |
593 | big_endian>::Valtype Valtype; | |
594 | unsigned char* wv = view; | |
595 | Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv); | |
596 | Valtype reloc = (psymval->value(object, addend) >> right_shift); | |
597 | ||
598 | val &= ~dst_mask; | |
599 | reloc &= dst_mask; | |
600 | ||
601 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc); | |
602 | } | |
603 | ||
604 | // Do a simple PC relative relocation with a Symbol_value with the | |
605 | // addend in the relocation. | |
606 | template<int valsize> | |
607 | static inline void | |
608 | pcrela(unsigned char* view, | |
609 | unsigned int right_shift, | |
610 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
6fa2a40b | 611 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
612 | const Symbol_value<size>* psymval, |
613 | typename elfcpp::Swap<size, big_endian>::Valtype addend, | |
614 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
615 | { | |
616 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
617 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
618 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
619 | Valtype reloc = ((psymval->value(object, addend) - address) | |
620 | >> right_shift); | |
621 | ||
622 | val &= ~dst_mask; | |
623 | reloc &= dst_mask; | |
624 | ||
625 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
626 | } | |
627 | ||
628 | template<int valsize> | |
629 | static inline void | |
630 | pcrela_unaligned(unsigned char* view, | |
6fa2a40b | 631 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
632 | const Symbol_value<size>* psymval, |
633 | typename elfcpp::Swap<size, big_endian>::Valtype addend, | |
634 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
635 | { | |
636 | typedef typename elfcpp::Swap_unaligned<valsize, | |
637 | big_endian>::Valtype Valtype; | |
638 | unsigned char* wv = view; | |
639 | Valtype reloc = (psymval->value(object, addend) - address); | |
640 | ||
641 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc); | |
642 | } | |
643 | ||
644 | typedef Sparc_relocate_functions<size, big_endian> This; | |
645 | typedef Sparc_relocate_functions<size, true> This_insn; | |
646 | ||
647 | public: | |
648 | // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2 | |
649 | static inline void | |
650 | wdisp30(unsigned char* view, | |
6fa2a40b | 651 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
652 | const Symbol_value<size>* psymval, |
653 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
654 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
655 | { | |
656 | This_insn::template pcrela<32>(view, 2, 0x3fffffff, object, | |
657 | psymval, addend, address); | |
658 | } | |
659 | ||
660 | // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2 | |
661 | static inline void | |
662 | wdisp22(unsigned char* view, | |
6fa2a40b | 663 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
664 | const Symbol_value<size>* psymval, |
665 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
666 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
667 | { | |
668 | This_insn::template pcrela<32>(view, 2, 0x003fffff, object, | |
669 | psymval, addend, address); | |
670 | } | |
671 | ||
672 | // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2 | |
673 | static inline void | |
674 | wdisp19(unsigned char* view, | |
6fa2a40b | 675 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
676 | const Symbol_value<size>* psymval, |
677 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
678 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
679 | { | |
680 | This_insn::template pcrela<32>(view, 2, 0x0007ffff, object, | |
681 | psymval, addend, address); | |
682 | } | |
683 | ||
684 | // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2 | |
685 | static inline void | |
686 | wdisp16(unsigned char* view, | |
6fa2a40b | 687 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
688 | const Symbol_value<size>* psymval, |
689 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
690 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
691 | { | |
692 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
693 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
694 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
695 | Valtype reloc = ((psymval->value(object, addend) - address) | |
696 | >> 2); | |
697 | ||
698 | // The relocation value is split between the low 14 bits, | |
699 | // and bits 20-21. | |
700 | val &= ~((0x3 << 20) | 0x3fff); | |
701 | reloc = (((reloc & 0xc000) << (20 - 14)) | |
702 | | (reloc & 0x3ffff)); | |
703 | ||
704 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
705 | } | |
706 | ||
2615994e DM |
707 | // R_SPARC_WDISP10: (Symbol + Addend - Address) >> 2 |
708 | static inline void | |
709 | wdisp10(unsigned char* view, | |
710 | const Sized_relobj_file<size, big_endian>* object, | |
711 | const Symbol_value<size>* psymval, | |
712 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
713 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
714 | { | |
715 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
716 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
717 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
718 | Valtype reloc = ((psymval->value(object, addend) - address) | |
719 | >> 2); | |
720 | ||
721 | // The relocation value is split between the low bits 5-12, | |
722 | // and high bits 19-20. | |
723 | val &= ~((0x3 << 19) | (0xff << 5)); | |
724 | reloc = (((reloc & 0x300) << (19 - 8)) | |
725 | | ((reloc & 0xff) << (5 - 0))); | |
726 | ||
727 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
728 | } | |
729 | ||
f5314dd5 DM |
730 | // R_SPARC_PC22: (Symbol + Addend - Address) >> 10 |
731 | static inline void | |
732 | pc22(unsigned char* view, | |
6fa2a40b | 733 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
734 | const Symbol_value<size>* psymval, |
735 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
736 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
737 | { | |
738 | This_insn::template pcrela<32>(view, 10, 0x003fffff, object, | |
739 | psymval, addend, address); | |
740 | } | |
741 | ||
742 | // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff | |
743 | static inline void | |
744 | pc10(unsigned char* view, | |
6fa2a40b | 745 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
746 | const Symbol_value<size>* psymval, |
747 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
748 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
749 | { | |
750 | This_insn::template pcrela<32>(view, 0, 0x000003ff, object, | |
751 | psymval, addend, address); | |
752 | } | |
753 | ||
754 | // R_SPARC_HI22: (Symbol + Addend) >> 10 | |
755 | static inline void | |
756 | hi22(unsigned char* view, | |
2ea97941 | 757 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
758 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
759 | { | |
2ea97941 | 760 | This_insn::template rela<32>(view, 10, 0x003fffff, value, addend); |
f5314dd5 DM |
761 | } |
762 | ||
763 | // R_SPARC_HI22: (Symbol + Addend) >> 10 | |
764 | static inline void | |
765 | hi22(unsigned char* view, | |
6fa2a40b | 766 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
767 | const Symbol_value<size>* psymval, |
768 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
769 | { | |
770 | This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend); | |
771 | } | |
772 | ||
773 | // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10 | |
774 | static inline void | |
775 | pcplt22(unsigned char* view, | |
6fa2a40b | 776 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
777 | const Symbol_value<size>* psymval, |
778 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
779 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
780 | { | |
781 | This_insn::template pcrela<32>(view, 10, 0x003fffff, object, | |
782 | psymval, addend, address); | |
783 | } | |
784 | ||
785 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
786 | static inline void | |
787 | lo10(unsigned char* view, | |
2ea97941 | 788 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
789 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
790 | { | |
2ea97941 | 791 | This_insn::template rela<32>(view, 0, 0x000003ff, value, addend); |
f5314dd5 DM |
792 | } |
793 | ||
794 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
795 | static inline void | |
796 | lo10(unsigned char* view, | |
6fa2a40b | 797 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
798 | const Symbol_value<size>* psymval, |
799 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
800 | { | |
801 | This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend); | |
802 | } | |
803 | ||
804 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
805 | static inline void | |
806 | lo10(unsigned char* view, | |
6fa2a40b | 807 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
808 | const Symbol_value<size>* psymval, |
809 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
810 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
811 | { | |
812 | This_insn::template pcrela<32>(view, 0, 0x000003ff, object, | |
813 | psymval, addend, address); | |
814 | } | |
815 | ||
816 | // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2 | |
817 | static inline void | |
818 | olo10(unsigned char* view, | |
6fa2a40b | 819 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
820 | const Symbol_value<size>* psymval, |
821 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
822 | typename elfcpp::Elf_types<size>::Elf_Addr addend2) | |
823 | { | |
824 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
825 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
826 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
827 | Valtype reloc = psymval->value(object, addend); | |
828 | ||
829 | val &= ~0x1fff; | |
830 | reloc &= 0x3ff; | |
831 | reloc += addend2; | |
832 | reloc &= 0x1fff; | |
833 | ||
834 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
835 | } | |
836 | ||
837 | // R_SPARC_22: (Symbol + Addend) | |
838 | static inline void | |
839 | rela32_22(unsigned char* view, | |
6fa2a40b | 840 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
841 | const Symbol_value<size>* psymval, |
842 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
843 | { | |
844 | This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend); | |
845 | } | |
846 | ||
847 | // R_SPARC_13: (Symbol + Addend) | |
848 | static inline void | |
849 | rela32_13(unsigned char* view, | |
2ea97941 | 850 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
851 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
852 | { | |
2ea97941 | 853 | This_insn::template rela<32>(view, 0, 0x00001fff, value, addend); |
f5314dd5 DM |
854 | } |
855 | ||
856 | // R_SPARC_13: (Symbol + Addend) | |
857 | static inline void | |
858 | rela32_13(unsigned char* view, | |
6fa2a40b | 859 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
860 | const Symbol_value<size>* psymval, |
861 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
862 | { | |
863 | This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend); | |
864 | } | |
865 | ||
866 | // R_SPARC_UA16: (Symbol + Addend) | |
867 | static inline void | |
868 | ua16(unsigned char* view, | |
6fa2a40b | 869 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
870 | const Symbol_value<size>* psymval, |
871 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
872 | { | |
873 | This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend); | |
874 | } | |
875 | ||
876 | // R_SPARC_UA32: (Symbol + Addend) | |
877 | static inline void | |
878 | ua32(unsigned char* view, | |
6fa2a40b | 879 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
880 | const Symbol_value<size>* psymval, |
881 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
882 | { | |
883 | This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend); | |
884 | } | |
885 | ||
886 | // R_SPARC_UA64: (Symbol + Addend) | |
887 | static inline void | |
888 | ua64(unsigned char* view, | |
6fa2a40b | 889 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
890 | const Symbol_value<size>* psymval, |
891 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
892 | { | |
893 | This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0, | |
894 | object, psymval, addend); | |
895 | } | |
896 | ||
897 | // R_SPARC_DISP8: (Symbol + Addend - Address) | |
898 | static inline void | |
899 | disp8(unsigned char* view, | |
6fa2a40b | 900 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
901 | const Symbol_value<size>* psymval, |
902 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
903 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
904 | { | |
905 | This::template pcrela_unaligned<8>(view, object, psymval, | |
906 | addend, address); | |
907 | } | |
908 | ||
909 | // R_SPARC_DISP16: (Symbol + Addend - Address) | |
910 | static inline void | |
911 | disp16(unsigned char* view, | |
6fa2a40b | 912 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
913 | const Symbol_value<size>* psymval, |
914 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
915 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
916 | { | |
917 | This::template pcrela_unaligned<16>(view, object, psymval, | |
918 | addend, address); | |
919 | } | |
920 | ||
921 | // R_SPARC_DISP32: (Symbol + Addend - Address) | |
922 | static inline void | |
923 | disp32(unsigned char* view, | |
6fa2a40b | 924 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
925 | const Symbol_value<size>* psymval, |
926 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
927 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
928 | { | |
929 | This::template pcrela_unaligned<32>(view, object, psymval, | |
930 | addend, address); | |
931 | } | |
932 | ||
933 | // R_SPARC_DISP64: (Symbol + Addend - Address) | |
934 | static inline void | |
935 | disp64(unsigned char* view, | |
6fa2a40b | 936 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
937 | const Symbol_value<size>* psymval, |
938 | elfcpp::Elf_Xword addend, | |
939 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
940 | { | |
941 | This::template pcrela_unaligned<64>(view, object, psymval, | |
942 | addend, address); | |
943 | } | |
944 | ||
2615994e DM |
945 | // R_SPARC_H34: (Symbol + Addend) >> 12 |
946 | static inline void | |
947 | h34(unsigned char* view, | |
948 | const Sized_relobj_file<size, big_endian>* object, | |
949 | const Symbol_value<size>* psymval, | |
950 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
951 | { | |
952 | This_insn::template rela<32>(view, 12, 0x003fffff, object, psymval, addend); | |
953 | } | |
954 | ||
f5314dd5 DM |
955 | // R_SPARC_H44: (Symbol + Addend) >> 22 |
956 | static inline void | |
957 | h44(unsigned char* view, | |
6fa2a40b | 958 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
959 | const Symbol_value<size>* psymval, |
960 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
961 | { | |
962 | This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend); | |
963 | } | |
964 | ||
965 | // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff | |
966 | static inline void | |
967 | m44(unsigned char* view, | |
6fa2a40b | 968 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
969 | const Symbol_value<size>* psymval, |
970 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
971 | { | |
972 | This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend); | |
973 | } | |
974 | ||
975 | // R_SPARC_L44: (Symbol + Addend) & 0xfff | |
976 | static inline void | |
977 | l44(unsigned char* view, | |
6fa2a40b | 978 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
979 | const Symbol_value<size>* psymval, |
980 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
981 | { | |
982 | This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend); | |
983 | } | |
984 | ||
985 | // R_SPARC_HH22: (Symbol + Addend) >> 42 | |
986 | static inline void | |
987 | hh22(unsigned char* view, | |
6fa2a40b | 988 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
989 | const Symbol_value<size>* psymval, |
990 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
991 | { | |
992 | This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend); | |
993 | } | |
994 | ||
995 | // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42 | |
996 | static inline void | |
997 | pc_hh22(unsigned char* view, | |
6fa2a40b | 998 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
999 | const Symbol_value<size>* psymval, |
1000 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
1001 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
1002 | { | |
1003 | This_insn::template pcrela<32>(view, 42, 0x003fffff, object, | |
1004 | psymval, addend, address); | |
1005 | } | |
1006 | ||
1007 | // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff | |
1008 | static inline void | |
1009 | hm10(unsigned char* view, | |
6fa2a40b | 1010 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1011 | const Symbol_value<size>* psymval, |
1012 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1013 | { | |
1014 | This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend); | |
1015 | } | |
1016 | ||
1017 | // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff | |
1018 | static inline void | |
1019 | pc_hm10(unsigned char* view, | |
6fa2a40b | 1020 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1021 | const Symbol_value<size>* psymval, |
1022 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
1023 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
1024 | { | |
1025 | This_insn::template pcrela<32>(view, 32, 0x000003ff, object, | |
1026 | psymval, addend, address); | |
1027 | } | |
1028 | ||
1029 | // R_SPARC_11: (Symbol + Addend) | |
1030 | static inline void | |
1031 | rela32_11(unsigned char* view, | |
6fa2a40b | 1032 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1033 | const Symbol_value<size>* psymval, |
1034 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1035 | { | |
1036 | This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend); | |
1037 | } | |
1038 | ||
1039 | // R_SPARC_10: (Symbol + Addend) | |
1040 | static inline void | |
1041 | rela32_10(unsigned char* view, | |
6fa2a40b | 1042 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1043 | const Symbol_value<size>* psymval, |
1044 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1045 | { | |
1046 | This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend); | |
1047 | } | |
1048 | ||
1049 | // R_SPARC_7: (Symbol + Addend) | |
1050 | static inline void | |
1051 | rela32_7(unsigned char* view, | |
6fa2a40b | 1052 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1053 | const Symbol_value<size>* psymval, |
1054 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1055 | { | |
1056 | This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend); | |
1057 | } | |
1058 | ||
1059 | // R_SPARC_6: (Symbol + Addend) | |
1060 | static inline void | |
1061 | rela32_6(unsigned char* view, | |
6fa2a40b | 1062 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1063 | const Symbol_value<size>* psymval, |
1064 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1065 | { | |
1066 | This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend); | |
1067 | } | |
1068 | ||
1069 | // R_SPARC_5: (Symbol + Addend) | |
1070 | static inline void | |
1071 | rela32_5(unsigned char* view, | |
6fa2a40b | 1072 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1073 | const Symbol_value<size>* psymval, |
1074 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1075 | { | |
1076 | This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend); | |
1077 | } | |
1078 | ||
1079 | // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10 | |
1080 | static inline void | |
1081 | ldo_hix22(unsigned char* view, | |
2ea97941 | 1082 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
1083 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
1084 | { | |
2ea97941 | 1085 | This_insn::hi22(view, value, addend); |
f5314dd5 DM |
1086 | } |
1087 | ||
1088 | // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff | |
1089 | static inline void | |
1090 | ldo_lox10(unsigned char* view, | |
2ea97941 | 1091 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
1092 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
1093 | { | |
1094 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1095 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1096 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
2ea97941 | 1097 | Valtype reloc = (value + addend); |
f5314dd5 DM |
1098 | |
1099 | val &= ~0x1fff; | |
1100 | reloc &= 0x3ff; | |
1101 | ||
1102 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1103 | } | |
1104 | ||
1105 | // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10 | |
1106 | static inline void | |
1107 | hix22(unsigned char* view, | |
2ea97941 | 1108 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
1109 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
1110 | { | |
1111 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1112 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1113 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
2ea97941 | 1114 | Valtype reloc = (value + addend); |
f5314dd5 DM |
1115 | |
1116 | val &= ~0x3fffff; | |
1117 | ||
1118 | reloc ^= ~(Valtype)0; | |
1119 | reloc >>= 10; | |
1120 | ||
1121 | reloc &= 0x3fffff; | |
1122 | ||
1123 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1124 | } | |
1125 | ||
2a1079e8 DM |
1126 | // R_SPARC_GOTDATA_OP_HIX22: @gdopoff(Symbol + Addend) >> 10 |
1127 | static inline void | |
1128 | gdop_hix22(unsigned char* view, | |
9eacb935 | 1129 | typename elfcpp::Elf_types<size>::Elf_Addr value) |
2a1079e8 DM |
1130 | { |
1131 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1132 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1133 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
9eacb935 | 1134 | int32_t reloc = static_cast<int32_t>(value); |
2a1079e8 DM |
1135 | |
1136 | val &= ~0x3fffff; | |
1137 | ||
1138 | if (reloc < 0) | |
1139 | reloc ^= ~static_cast<int32_t>(0); | |
1140 | reloc >>= 10; | |
1141 | ||
1142 | reloc &= 0x3fffff; | |
1143 | ||
1144 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1145 | } | |
1146 | ||
f5314dd5 DM |
1147 | // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10 |
1148 | static inline void | |
1149 | hix22(unsigned char* view, | |
6fa2a40b | 1150 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1151 | const Symbol_value<size>* psymval, |
1152 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1153 | { | |
1154 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1155 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1156 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
1157 | Valtype reloc = psymval->value(object, addend); | |
1158 | ||
1159 | val &= ~0x3fffff; | |
1160 | ||
1161 | reloc ^= ~(Valtype)0; | |
1162 | reloc >>= 10; | |
1163 | ||
1164 | reloc &= 0x3fffff; | |
1165 | ||
1166 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1167 | } | |
1168 | ||
1169 | ||
1170 | // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00 | |
1171 | static inline void | |
1172 | lox10(unsigned char* view, | |
2ea97941 | 1173 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
1174 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
1175 | { | |
1176 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1177 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1178 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
2ea97941 | 1179 | Valtype reloc = (value + addend); |
f5314dd5 DM |
1180 | |
1181 | val &= ~0x1fff; | |
1182 | reloc &= 0x3ff; | |
1183 | reloc |= 0x1c00; | |
1184 | ||
1185 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1186 | } | |
1187 | ||
2a1079e8 DM |
1188 | // R_SPARC_GOTDATA_OP_LOX10: (@gdopoff(Symbol + Addend) & 0x3ff) | 0x1c00 |
1189 | static inline void | |
1190 | gdop_lox10(unsigned char* view, | |
9eacb935 | 1191 | typename elfcpp::Elf_types<size>::Elf_Addr value) |
2a1079e8 DM |
1192 | { |
1193 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1194 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1195 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
9eacb935 | 1196 | int32_t reloc = static_cast<int32_t>(value); |
2a1079e8 DM |
1197 | |
1198 | if (reloc < 0) | |
1199 | reloc = (reloc & 0x3ff) | 0x1c00; | |
1200 | else | |
1201 | reloc = (reloc & 0x3ff); | |
1202 | ||
1203 | val &= ~0x1fff; | |
1204 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1205 | } | |
1206 | ||
f5314dd5 DM |
1207 | // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00 |
1208 | static inline void | |
1209 | lox10(unsigned char* view, | |
6fa2a40b | 1210 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1211 | const Symbol_value<size>* psymval, |
1212 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1213 | { | |
1214 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1215 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1216 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
1217 | Valtype reloc = psymval->value(object, addend); | |
1218 | ||
1219 | val &= ~0x1fff; | |
1220 | reloc &= 0x3ff; | |
1221 | reloc |= 0x1c00; | |
1222 | ||
1223 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1224 | } | |
1225 | }; | |
1226 | ||
1227 | // Get the GOT section, creating it if necessary. | |
1228 | ||
1229 | template<int size, bool big_endian> | |
1230 | Output_data_got<size, big_endian>* | |
1231 | Target_sparc<size, big_endian>::got_section(Symbol_table* symtab, | |
1232 | Layout* layout) | |
1233 | { | |
1234 | if (this->got_ == NULL) | |
1235 | { | |
1236 | gold_assert(symtab != NULL && layout != NULL); | |
1237 | ||
1238 | this->got_ = new Output_data_got<size, big_endian>(); | |
1239 | ||
82742395 ILT |
1240 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, |
1241 | (elfcpp::SHF_ALLOC | |
1242 | | elfcpp::SHF_WRITE), | |
22f0da72 | 1243 | this->got_, ORDER_RELRO, true); |
f5314dd5 DM |
1244 | |
1245 | // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section. | |
1246 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
99fff23b | 1247 | Symbol_table::PREDEFINED, |
f5314dd5 DM |
1248 | this->got_, |
1249 | 0, 0, elfcpp::STT_OBJECT, | |
1250 | elfcpp::STB_LOCAL, | |
1251 | elfcpp::STV_HIDDEN, 0, | |
1252 | false, false); | |
1253 | } | |
1254 | ||
1255 | return this->got_; | |
1256 | } | |
1257 | ||
1258 | // Get the dynamic reloc section, creating it if necessary. | |
1259 | ||
1260 | template<int size, bool big_endian> | |
1261 | typename Target_sparc<size, big_endian>::Reloc_section* | |
1262 | Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout) | |
1263 | { | |
1264 | if (this->rela_dyn_ == NULL) | |
1265 | { | |
1266 | gold_assert(layout != NULL); | |
d98bc257 | 1267 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); |
f5314dd5 | 1268 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, |
22f0da72 ILT |
1269 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
1270 | ORDER_DYNAMIC_RELOCS, false); | |
f5314dd5 DM |
1271 | } |
1272 | return this->rela_dyn_; | |
1273 | } | |
1274 | ||
8c2bf391 DM |
1275 | // Get the section to use for IFUNC relocs, creating it if |
1276 | // necessary. These go in .rela.dyn, but only after all other dynamic | |
1277 | // relocations. They need to follow the other dynamic relocations so | |
1278 | // that they can refer to global variables initialized by those | |
1279 | // relocs. | |
1280 | ||
1281 | template<int size, bool big_endian> | |
1282 | typename Target_sparc<size, big_endian>::Reloc_section* | |
1283 | Target_sparc<size, big_endian>::rela_ifunc_section(Layout* layout) | |
1284 | { | |
1285 | if (this->rela_ifunc_ == NULL) | |
1286 | { | |
1287 | // Make sure we have already created the dynamic reloc section. | |
1288 | this->rela_dyn_section(layout); | |
1289 | this->rela_ifunc_ = new Reloc_section(false); | |
1290 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
1291 | elfcpp::SHF_ALLOC, this->rela_ifunc_, | |
1292 | ORDER_DYNAMIC_RELOCS, false); | |
1293 | gold_assert(this->rela_dyn_->output_section() | |
1294 | == this->rela_ifunc_->output_section()); | |
1295 | } | |
1296 | return this->rela_ifunc_; | |
1297 | } | |
1298 | ||
f5314dd5 DM |
1299 | // A class to handle the PLT data. |
1300 | ||
1301 | template<int size, bool big_endian> | |
1302 | class Output_data_plt_sparc : public Output_section_data | |
1303 | { | |
1304 | public: | |
1305 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
1306 | size, big_endian> Reloc_section; | |
1307 | ||
1308 | Output_data_plt_sparc(Layout*); | |
1309 | ||
1310 | // Add an entry to the PLT. | |
8c2bf391 DM |
1311 | void add_entry(Symbol_table* symtab, Layout* layout, Symbol* gsym); |
1312 | ||
1313 | // Add an entry to the PLT for a local STT_GNU_IFUNC symbol. | |
1314 | unsigned int | |
1315 | add_local_ifunc_entry(Symbol_table*, Layout*, | |
1316 | Sized_relobj_file<size, big_endian>* relobj, | |
1317 | unsigned int local_sym_index); | |
f5314dd5 DM |
1318 | |
1319 | // Return the .rela.plt section data. | |
1320 | const Reloc_section* rel_plt() const | |
1321 | { | |
1322 | return this->rel_; | |
1323 | } | |
1324 | ||
8c2bf391 DM |
1325 | // Return where the IFUNC relocations should go. |
1326 | Reloc_section* | |
1327 | rela_ifunc(Symbol_table*, Layout*); | |
1328 | ||
1329 | void | |
1330 | emit_pending_ifunc_relocs(); | |
1331 | ||
1332 | // Return whether we created a section for IFUNC relocations. | |
1333 | bool | |
1334 | has_ifunc_section() const | |
1335 | { return this->ifunc_rel_ != NULL; } | |
1336 | ||
0e70b911 CC |
1337 | // Return the number of PLT entries. |
1338 | unsigned int | |
1339 | entry_count() const | |
8c2bf391 | 1340 | { return this->count_ + this->ifunc_count_; } |
0e70b911 CC |
1341 | |
1342 | // Return the offset of the first non-reserved PLT entry. | |
1343 | static unsigned int | |
1344 | first_plt_entry_offset() | |
1345 | { return 4 * base_plt_entry_size; } | |
1346 | ||
1347 | // Return the size of a PLT entry. | |
1348 | static unsigned int | |
1349 | get_plt_entry_size() | |
1350 | { return base_plt_entry_size; } | |
1351 | ||
8c2bf391 DM |
1352 | // Return the PLT address to use for a global symbol. |
1353 | uint64_t | |
1354 | address_for_global(const Symbol*); | |
1355 | ||
1356 | // Return the PLT address to use for a local symbol. | |
1357 | uint64_t | |
1358 | address_for_local(const Relobj*, unsigned int symndx); | |
1359 | ||
f5314dd5 DM |
1360 | protected: |
1361 | void do_adjust_output_section(Output_section* os); | |
1362 | ||
7d9e3d98 ILT |
1363 | // Write to a map file. |
1364 | void | |
1365 | do_print_to_mapfile(Mapfile* mapfile) const | |
1366 | { mapfile->print_output_data(this, _("** PLT")); } | |
1367 | ||
f5314dd5 DM |
1368 | private: |
1369 | // The size of an entry in the PLT. | |
1370 | static const int base_plt_entry_size = (size == 32 ? 12 : 32); | |
1371 | ||
1372 | static const unsigned int plt_entries_per_block = 160; | |
1373 | static const unsigned int plt_insn_chunk_size = 24; | |
1374 | static const unsigned int plt_pointer_chunk_size = 8; | |
1375 | static const unsigned int plt_block_size = | |
1376 | (plt_entries_per_block | |
1377 | * (plt_insn_chunk_size + plt_pointer_chunk_size)); | |
1378 | ||
8c2bf391 DM |
1379 | section_offset_type |
1380 | plt_index_to_offset(unsigned int index) | |
f5314dd5 | 1381 | { |
8c2bf391 | 1382 | section_offset_type offset; |
f5314dd5 | 1383 | |
8c2bf391 DM |
1384 | if (size == 32 || index < 32768) |
1385 | offset = index * base_plt_entry_size; | |
f5314dd5 DM |
1386 | else |
1387 | { | |
8c2bf391 | 1388 | unsigned int ext_index = index - 32768; |
f5314dd5 | 1389 | |
8c2bf391 DM |
1390 | offset = (32768 * base_plt_entry_size) |
1391 | + ((ext_index / plt_entries_per_block) | |
1392 | * plt_block_size) | |
1393 | + ((ext_index % plt_entries_per_block) | |
1394 | * plt_insn_chunk_size); | |
f5314dd5 | 1395 | } |
8c2bf391 DM |
1396 | return offset; |
1397 | } | |
1398 | ||
1399 | // Set the final size. | |
1400 | void | |
1401 | set_final_data_size() | |
1402 | { | |
1403 | unsigned int full_count = this->entry_count() + 4; | |
1404 | unsigned int extra = (size == 32 ? 4 : 0); | |
1405 | section_offset_type sz = plt_index_to_offset(full_count) + extra; | |
1406 | ||
1407 | return this->set_data_size(sz); | |
f5314dd5 DM |
1408 | } |
1409 | ||
1410 | // Write out the PLT data. | |
1411 | void | |
1412 | do_write(Output_file*); | |
1413 | ||
8c2bf391 DM |
1414 | struct Global_ifunc |
1415 | { | |
1416 | Reloc_section* rel; | |
1417 | Symbol* gsym; | |
1418 | unsigned int plt_index; | |
1419 | }; | |
1420 | ||
1421 | struct Local_ifunc | |
1422 | { | |
1423 | Reloc_section* rel; | |
1424 | Sized_relobj_file<size, big_endian>* object; | |
1425 | unsigned int local_sym_index; | |
1426 | unsigned int plt_index; | |
1427 | }; | |
1428 | ||
f5314dd5 DM |
1429 | // The reloc section. |
1430 | Reloc_section* rel_; | |
8c2bf391 DM |
1431 | // The IFUNC relocations, if necessary. These must follow the |
1432 | // regular relocations. | |
1433 | Reloc_section* ifunc_rel_; | |
f5314dd5 DM |
1434 | // The number of PLT entries. |
1435 | unsigned int count_; | |
8c2bf391 DM |
1436 | // The number of PLT entries for IFUNC symbols. |
1437 | unsigned int ifunc_count_; | |
1438 | // Global STT_GNU_IFUNC symbols. | |
1439 | std::vector<Global_ifunc> global_ifuncs_; | |
1440 | // Local STT_GNU_IFUNC symbols. | |
1441 | std::vector<Local_ifunc> local_ifuncs_; | |
f5314dd5 DM |
1442 | }; |
1443 | ||
4f2a9edd ILT |
1444 | // Define the constants as required by C++ standard. |
1445 | ||
1446 | template<int size, bool big_endian> | |
1447 | const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size; | |
1448 | ||
1449 | template<int size, bool big_endian> | |
1450 | const unsigned int | |
1451 | Output_data_plt_sparc<size, big_endian>::plt_entries_per_block; | |
1452 | ||
1453 | template<int size, bool big_endian> | |
1454 | const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size; | |
1455 | ||
1456 | template<int size, bool big_endian> | |
1457 | const unsigned int | |
1458 | Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size; | |
1459 | ||
1460 | template<int size, bool big_endian> | |
1461 | const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size; | |
1462 | ||
f5314dd5 DM |
1463 | // Create the PLT section. The ordinary .got section is an argument, |
1464 | // since we need to refer to the start. | |
1465 | ||
1466 | template<int size, bool big_endian> | |
1467 | Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout) | |
8c2bf391 DM |
1468 | : Output_section_data(size == 32 ? 4 : 8), ifunc_rel_(NULL), |
1469 | count_(0), ifunc_count_(0), global_ifuncs_(), local_ifuncs_() | |
f5314dd5 | 1470 | { |
d98bc257 | 1471 | this->rel_ = new Reloc_section(false); |
f5314dd5 | 1472 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, |
22f0da72 ILT |
1473 | elfcpp::SHF_ALLOC, this->rel_, |
1474 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
f5314dd5 DM |
1475 | } |
1476 | ||
1477 | template<int size, bool big_endian> | |
1478 | void | |
1479 | Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os) | |
1480 | { | |
1481 | os->set_entsize(0); | |
1482 | } | |
1483 | ||
1484 | // Add an entry to the PLT. | |
1485 | ||
1486 | template<int size, bool big_endian> | |
1487 | void | |
8c2bf391 DM |
1488 | Output_data_plt_sparc<size, big_endian>::add_entry(Symbol_table* symtab, |
1489 | Layout* layout, | |
1490 | Symbol* gsym) | |
f5314dd5 DM |
1491 | { |
1492 | gold_assert(!gsym->has_plt_offset()); | |
1493 | ||
f5314dd5 | 1494 | section_offset_type plt_offset; |
8c2bf391 | 1495 | unsigned int index; |
f5314dd5 | 1496 | |
8c2bf391 DM |
1497 | if (gsym->type() == elfcpp::STT_GNU_IFUNC |
1498 | && gsym->can_use_relative_reloc(false)) | |
1499 | { | |
1500 | index = this->ifunc_count_; | |
1501 | plt_offset = plt_index_to_offset(index); | |
1502 | gsym->set_plt_offset(plt_offset); | |
1503 | ++this->ifunc_count_; | |
1504 | Reloc_section* rel = this->rela_ifunc(symtab, layout); | |
1505 | ||
1506 | struct Global_ifunc gi; | |
1507 | gi.rel = rel; | |
1508 | gi.gsym = gsym; | |
1509 | gi.plt_index = index; | |
1510 | this->global_ifuncs_.push_back(gi); | |
1511 | } | |
f5314dd5 DM |
1512 | else |
1513 | { | |
8c2bf391 DM |
1514 | plt_offset = plt_index_to_offset(this->count_ + 4); |
1515 | gsym->set_plt_offset(plt_offset); | |
1516 | ++this->count_; | |
1517 | gsym->set_needs_dynsym_entry(); | |
1518 | this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this, | |
1519 | plt_offset, 0); | |
1520 | } | |
f5314dd5 | 1521 | |
8c2bf391 DM |
1522 | // Note that we don't need to save the symbol. The contents of the |
1523 | // PLT are independent of which symbols are used. The symbols only | |
1524 | // appear in the relocations. | |
1525 | } | |
1526 | ||
1527 | template<int size, bool big_endian> | |
1528 | unsigned int | |
1529 | Output_data_plt_sparc<size, big_endian>::add_local_ifunc_entry( | |
1530 | Symbol_table* symtab, | |
1531 | Layout* layout, | |
1532 | Sized_relobj_file<size, big_endian>* relobj, | |
1533 | unsigned int local_sym_index) | |
1534 | { | |
1535 | unsigned int index = this->ifunc_count_; | |
1536 | section_offset_type plt_offset; | |
1537 | ||
1538 | plt_offset = plt_index_to_offset(index); | |
1539 | ++this->ifunc_count_; | |
1540 | ||
1541 | Reloc_section* rel = this->rela_ifunc(symtab, layout); | |
1542 | ||
1543 | struct Local_ifunc li; | |
1544 | li.rel = rel; | |
1545 | li.object = relobj; | |
1546 | li.local_sym_index = local_sym_index; | |
1547 | li.plt_index = index; | |
1548 | this->local_ifuncs_.push_back(li); | |
1549 | ||
1550 | return plt_offset; | |
1551 | } | |
1552 | ||
1553 | // Emit any pending IFUNC plt relocations. | |
1554 | ||
1555 | template<int size, bool big_endian> | |
1556 | void | |
1557 | Output_data_plt_sparc<size, big_endian>::emit_pending_ifunc_relocs() | |
1558 | { | |
1559 | // Emit any pending IFUNC relocs. | |
1560 | for (typename std::vector<Global_ifunc>::const_iterator p = | |
1561 | this->global_ifuncs_.begin(); | |
1562 | p != this->global_ifuncs_.end(); | |
1563 | ++p) | |
1564 | { | |
1565 | section_offset_type plt_offset; | |
1566 | unsigned int index; | |
1567 | ||
1568 | index = this->count_ + p->plt_index + 4; | |
1569 | plt_offset = this->plt_index_to_offset(index); | |
1570 | p->rel->add_symbolless_global_addend(p->gsym, elfcpp::R_SPARC_JMP_IREL, | |
1571 | this, plt_offset, 0); | |
1572 | } | |
1573 | ||
1574 | for (typename std::vector<Local_ifunc>::const_iterator p = | |
1575 | this->local_ifuncs_.begin(); | |
1576 | p != this->local_ifuncs_.end(); | |
1577 | ++p) | |
1578 | { | |
1579 | section_offset_type plt_offset; | |
1580 | unsigned int index; | |
1581 | ||
1582 | index = this->count_ + p->plt_index + 4; | |
1583 | plt_offset = this->plt_index_to_offset(index); | |
1584 | p->rel->add_symbolless_local_addend(p->object, p->local_sym_index, | |
1585 | elfcpp::R_SPARC_JMP_IREL, | |
1586 | this, plt_offset, 0); | |
f5314dd5 | 1587 | } |
8c2bf391 | 1588 | } |
f5314dd5 | 1589 | |
8c2bf391 DM |
1590 | // Return where the IFUNC relocations should go in the PLT. These |
1591 | // follow the non-IFUNC relocations. | |
f5314dd5 | 1592 | |
8c2bf391 DM |
1593 | template<int size, bool big_endian> |
1594 | typename Output_data_plt_sparc<size, big_endian>::Reloc_section* | |
1595 | Output_data_plt_sparc<size, big_endian>::rela_ifunc( | |
1596 | Symbol_table* symtab, | |
1597 | Layout* layout) | |
1598 | { | |
1599 | if (this->ifunc_rel_ == NULL) | |
1600 | { | |
1601 | this->ifunc_rel_ = new Reloc_section(false); | |
1602 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
1603 | elfcpp::SHF_ALLOC, this->ifunc_rel_, | |
1604 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
1605 | gold_assert(this->ifunc_rel_->output_section() | |
1606 | == this->rel_->output_section()); | |
1607 | ||
1608 | if (parameters->doing_static_link()) | |
1609 | { | |
1610 | // A statically linked executable will only have a .rel.plt | |
1611 | // section to hold R_SPARC_IRELATIVE and R_SPARC_JMP_IREL | |
1612 | // relocs for STT_GNU_IFUNC symbols. The library will use | |
1613 | // these symbols to locate the IRELATIVE and JMP_IREL relocs | |
1614 | // at program startup time. | |
1615 | symtab->define_in_output_data("__rela_iplt_start", NULL, | |
1616 | Symbol_table::PREDEFINED, | |
1617 | this->ifunc_rel_, 0, 0, | |
1618 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
1619 | elfcpp::STV_HIDDEN, 0, false, true); | |
1620 | symtab->define_in_output_data("__rela_iplt_end", NULL, | |
1621 | Symbol_table::PREDEFINED, | |
1622 | this->ifunc_rel_, 0, 0, | |
1623 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
1624 | elfcpp::STV_HIDDEN, 0, true, true); | |
1625 | } | |
1626 | } | |
1627 | return this->ifunc_rel_; | |
1628 | } | |
f5314dd5 | 1629 | |
8c2bf391 | 1630 | // Return the PLT address to use for a global symbol. |
f5314dd5 | 1631 | |
8c2bf391 DM |
1632 | template<int size, bool big_endian> |
1633 | uint64_t | |
1634 | Output_data_plt_sparc<size, big_endian>::address_for_global(const Symbol* gsym) | |
1635 | { | |
1636 | uint64_t offset = 0; | |
1637 | if (gsym->type() == elfcpp::STT_GNU_IFUNC | |
1638 | && gsym->can_use_relative_reloc(false)) | |
1639 | offset = plt_index_to_offset(this->count_ + 4); | |
19fec8c1 | 1640 | return this->address() + offset + gsym->plt_offset(); |
8c2bf391 DM |
1641 | } |
1642 | ||
1643 | // Return the PLT address to use for a local symbol. These are always | |
1644 | // IRELATIVE relocs. | |
1645 | ||
1646 | template<int size, bool big_endian> | |
1647 | uint64_t | |
1648 | Output_data_plt_sparc<size, big_endian>::address_for_local( | |
19fec8c1 AM |
1649 | const Relobj* object, |
1650 | unsigned int r_sym) | |
8c2bf391 | 1651 | { |
19fec8c1 AM |
1652 | return (this->address() |
1653 | + plt_index_to_offset(this->count_ + 4) | |
1654 | + object->local_plt_offset(r_sym)); | |
f5314dd5 DM |
1655 | } |
1656 | ||
1657 | static const unsigned int sparc_nop = 0x01000000; | |
1658 | static const unsigned int sparc_sethi_g1 = 0x03000000; | |
1659 | static const unsigned int sparc_branch_always = 0x30800000; | |
1660 | static const unsigned int sparc_branch_always_pt = 0x30680000; | |
1661 | static const unsigned int sparc_mov = 0x80100000; | |
1662 | static const unsigned int sparc_mov_g0_o0 = 0x90100000; | |
1663 | static const unsigned int sparc_mov_o7_g5 = 0x8a10000f; | |
1664 | static const unsigned int sparc_call_plus_8 = 0x40000002; | |
1665 | static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000; | |
1666 | static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001; | |
1667 | static const unsigned int sparc_mov_g5_o7 = 0x9e100005; | |
1668 | ||
1669 | // Write out the PLT. | |
1670 | ||
1671 | template<int size, bool big_endian> | |
1672 | void | |
1673 | Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of) | |
1674 | { | |
2ea97941 | 1675 | const off_t offset = this->offset(); |
f5314dd5 DM |
1676 | const section_size_type oview_size = |
1677 | convert_to_section_size_type(this->data_size()); | |
2ea97941 | 1678 | unsigned char* const oview = of->get_output_view(offset, oview_size); |
f5314dd5 DM |
1679 | unsigned char* pov = oview; |
1680 | ||
1681 | memset(pov, 0, base_plt_entry_size * 4); | |
8c2bf391 | 1682 | pov += this->first_plt_entry_offset(); |
f5314dd5 DM |
1683 | |
1684 | unsigned int plt_offset = base_plt_entry_size * 4; | |
8c2bf391 | 1685 | const unsigned int count = this->entry_count(); |
f5314dd5 DM |
1686 | |
1687 | if (size == 64) | |
1688 | { | |
1689 | unsigned int limit; | |
1690 | ||
1691 | limit = (count > 32768 ? 32768 : count); | |
1692 | ||
1693 | for (unsigned int i = 0; i < limit; ++i) | |
1694 | { | |
1695 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1696 | sparc_sethi_g1 + plt_offset); | |
1697 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1698 | sparc_branch_always_pt + | |
1699 | (((base_plt_entry_size - | |
1700 | (plt_offset + 4)) >> 2) & | |
1701 | 0x7ffff)); | |
1702 | elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop); | |
1703 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop); | |
1704 | elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop); | |
1705 | elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop); | |
1706 | elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop); | |
1707 | elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop); | |
1708 | ||
1709 | pov += base_plt_entry_size; | |
1710 | plt_offset += base_plt_entry_size; | |
1711 | } | |
1712 | ||
1713 | if (count > 32768) | |
1714 | { | |
1715 | unsigned int ext_cnt = count - 32768; | |
1716 | unsigned int blks = ext_cnt / plt_entries_per_block; | |
1717 | ||
1718 | for (unsigned int i = 0; i < blks; ++i) | |
1719 | { | |
1720 | unsigned int data_off = (plt_entries_per_block | |
1721 | * plt_insn_chunk_size) - 4; | |
1722 | ||
1723 | for (unsigned int j = 0; j < plt_entries_per_block; ++j) | |
1724 | { | |
1725 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1726 | sparc_mov_o7_g5); | |
1727 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1728 | sparc_call_plus_8); | |
1729 | elfcpp::Swap<32, true>::writeval(pov + 0x08, | |
1730 | sparc_nop); | |
1731 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, | |
1732 | sparc_ldx_o7_imm_g1 + | |
1733 | (data_off & 0x1fff)); | |
1734 | elfcpp::Swap<32, true>::writeval(pov + 0x10, | |
1735 | sparc_jmpl_o7_g1_g1); | |
1736 | elfcpp::Swap<32, true>::writeval(pov + 0x14, | |
1737 | sparc_mov_g5_o7); | |
1738 | ||
1739 | elfcpp::Swap<64, big_endian>::writeval( | |
1740 | pov + 0x4 + data_off, | |
1741 | (elfcpp::Elf_Xword) (oview - (pov + 0x04))); | |
1742 | ||
1743 | pov += plt_insn_chunk_size; | |
1744 | data_off -= 16; | |
1745 | } | |
1746 | } | |
1747 | ||
1748 | unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block; | |
1749 | for (unsigned int i = 0; i < sub_blk_cnt; ++i) | |
1750 | { | |
1751 | unsigned int data_off = (sub_blk_cnt | |
1752 | * plt_insn_chunk_size) - 4; | |
1753 | ||
1754 | for (unsigned int j = 0; j < plt_entries_per_block; ++j) | |
1755 | { | |
1756 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1757 | sparc_mov_o7_g5); | |
1758 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1759 | sparc_call_plus_8); | |
1760 | elfcpp::Swap<32, true>::writeval(pov + 0x08, | |
1761 | sparc_nop); | |
1762 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, | |
1763 | sparc_ldx_o7_imm_g1 + | |
1764 | (data_off & 0x1fff)); | |
1765 | elfcpp::Swap<32, true>::writeval(pov + 0x10, | |
1766 | sparc_jmpl_o7_g1_g1); | |
1767 | elfcpp::Swap<32, true>::writeval(pov + 0x14, | |
1768 | sparc_mov_g5_o7); | |
1769 | ||
1770 | elfcpp::Swap<64, big_endian>::writeval( | |
1771 | pov + 0x4 + data_off, | |
1772 | (elfcpp::Elf_Xword) (oview - (pov + 0x04))); | |
1773 | ||
1774 | pov += plt_insn_chunk_size; | |
1775 | data_off -= 16; | |
1776 | } | |
1777 | } | |
1778 | } | |
1779 | } | |
1780 | else | |
1781 | { | |
1782 | for (unsigned int i = 0; i < count; ++i) | |
1783 | { | |
1784 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1785 | sparc_sethi_g1 + plt_offset); | |
1786 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1787 | sparc_branch_always + | |
1788 | (((- (plt_offset + 4)) >> 2) & | |
1789 | 0x003fffff)); | |
1790 | elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop); | |
1791 | ||
1792 | pov += base_plt_entry_size; | |
1793 | plt_offset += base_plt_entry_size; | |
1794 | } | |
1795 | ||
1796 | elfcpp::Swap<32, true>::writeval(pov, sparc_nop); | |
1797 | pov += 4; | |
1798 | } | |
1799 | ||
1800 | gold_assert(static_cast<section_size_type>(pov - oview) == oview_size); | |
1801 | ||
2ea97941 | 1802 | of->write_output_view(offset, oview_size, oview); |
f5314dd5 DM |
1803 | } |
1804 | ||
8c2bf391 DM |
1805 | // Create the PLT section. |
1806 | ||
1807 | template<int size, bool big_endian> | |
1808 | void | |
1809 | Target_sparc<size, big_endian>::make_plt_section(Symbol_table* symtab, | |
1810 | Layout* layout) | |
1811 | { | |
1812 | // Create the GOT sections first. | |
1813 | this->got_section(symtab, layout); | |
1814 | ||
1815 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
1816 | // necessary due to how, on Sparc and some other targets, .rela.dyn | |
1817 | // needs to include .rela.plt in it's range. | |
1818 | this->rela_dyn_section(layout); | |
1819 | ||
1820 | this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout); | |
1821 | layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS, | |
1822 | (elfcpp::SHF_ALLOC | |
1823 | | elfcpp::SHF_EXECINSTR | |
1824 | | elfcpp::SHF_WRITE), | |
1825 | this->plt_, ORDER_NON_RELRO_FIRST, false); | |
1826 | ||
1827 | // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section. | |
1828 | symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL, | |
1829 | Symbol_table::PREDEFINED, | |
1830 | this->plt_, | |
1831 | 0, 0, elfcpp::STT_OBJECT, | |
1832 | elfcpp::STB_LOCAL, | |
1833 | elfcpp::STV_HIDDEN, 0, | |
1834 | false, false); | |
1835 | } | |
1836 | ||
f5314dd5 DM |
1837 | // Create a PLT entry for a global symbol. |
1838 | ||
1839 | template<int size, bool big_endian> | |
1840 | void | |
1841 | Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab, | |
1842 | Layout* layout, | |
1843 | Symbol* gsym) | |
1844 | { | |
1845 | if (gsym->has_plt_offset()) | |
1846 | return; | |
1847 | ||
1848 | if (this->plt_ == NULL) | |
8c2bf391 | 1849 | this->make_plt_section(symtab, layout); |
f5314dd5 | 1850 | |
8c2bf391 DM |
1851 | this->plt_->add_entry(symtab, layout, gsym); |
1852 | } | |
f5314dd5 | 1853 | |
8c2bf391 | 1854 | // Make a PLT entry for a local STT_GNU_IFUNC symbol. |
f5314dd5 | 1855 | |
8c2bf391 DM |
1856 | template<int size, bool big_endian> |
1857 | void | |
1858 | Target_sparc<size, big_endian>::make_local_ifunc_plt_entry( | |
1859 | Symbol_table* symtab, | |
1860 | Layout* layout, | |
1861 | Sized_relobj_file<size, big_endian>* relobj, | |
1862 | unsigned int local_sym_index) | |
1863 | { | |
1864 | if (relobj->local_has_plt_offset(local_sym_index)) | |
1865 | return; | |
1866 | if (this->plt_ == NULL) | |
1867 | this->make_plt_section(symtab, layout); | |
1868 | unsigned int plt_offset = this->plt_->add_local_ifunc_entry(symtab, layout, | |
1869 | relobj, | |
1870 | local_sym_index); | |
1871 | relobj->set_local_plt_offset(local_sym_index, plt_offset); | |
f5314dd5 DM |
1872 | } |
1873 | ||
0e70b911 CC |
1874 | // Return the number of entries in the PLT. |
1875 | ||
1876 | template<int size, bool big_endian> | |
1877 | unsigned int | |
1878 | Target_sparc<size, big_endian>::plt_entry_count() const | |
1879 | { | |
1880 | if (this->plt_ == NULL) | |
1881 | return 0; | |
1882 | return this->plt_->entry_count(); | |
1883 | } | |
1884 | ||
1885 | // Return the offset of the first non-reserved PLT entry. | |
1886 | ||
1887 | template<int size, bool big_endian> | |
1888 | unsigned int | |
1889 | Target_sparc<size, big_endian>::first_plt_entry_offset() const | |
1890 | { | |
1891 | return Output_data_plt_sparc<size, big_endian>::first_plt_entry_offset(); | |
1892 | } | |
1893 | ||
1894 | // Return the size of each PLT entry. | |
1895 | ||
1896 | template<int size, bool big_endian> | |
1897 | unsigned int | |
1898 | Target_sparc<size, big_endian>::plt_entry_size() const | |
1899 | { | |
1900 | return Output_data_plt_sparc<size, big_endian>::get_plt_entry_size(); | |
1901 | } | |
1902 | ||
f5314dd5 DM |
1903 | // Create a GOT entry for the TLS module index. |
1904 | ||
1905 | template<int size, bool big_endian> | |
1906 | unsigned int | |
6fa2a40b CC |
1907 | Target_sparc<size, big_endian>::got_mod_index_entry( |
1908 | Symbol_table* symtab, | |
1909 | Layout* layout, | |
1910 | Sized_relobj_file<size, big_endian>* object) | |
f5314dd5 DM |
1911 | { |
1912 | if (this->got_mod_index_offset_ == -1U) | |
1913 | { | |
1914 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
1915 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
1916 | Output_data_got<size, big_endian>* got; | |
1917 | unsigned int got_offset; | |
1918 | ||
1919 | got = this->got_section(symtab, layout); | |
1920 | got_offset = got->add_constant(0); | |
1921 | rela_dyn->add_local(object, 0, | |
1922 | (size == 64 ? | |
1923 | elfcpp::R_SPARC_TLS_DTPMOD64 : | |
1924 | elfcpp::R_SPARC_TLS_DTPMOD32), got, | |
1925 | got_offset, 0); | |
1926 | got->add_constant(0); | |
1927 | this->got_mod_index_offset_ = got_offset; | |
1928 | } | |
1929 | return this->got_mod_index_offset_; | |
1930 | } | |
1931 | ||
f5314dd5 DM |
1932 | // Optimize the TLS relocation type based on what we know about the |
1933 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1934 | // known at link time. | |
1935 | ||
1936 | static tls::Tls_optimization | |
1937 | optimize_tls_reloc(bool is_final, int r_type) | |
1938 | { | |
1939 | // If we are generating a shared library, then we can't do anything | |
1940 | // in the linker. | |
1941 | if (parameters->options().shared()) | |
1942 | return tls::TLSOPT_NONE; | |
1943 | ||
1944 | switch (r_type) | |
1945 | { | |
1946 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
1947 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
1948 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
1949 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
1950 | // These are General-Dynamic which permits fully general TLS | |
1951 | // access. Since we know that we are generating an executable, | |
1952 | // we can convert this to Initial-Exec. If we also know that | |
1953 | // this is a local symbol, we can further switch to Local-Exec. | |
1954 | if (is_final) | |
1955 | return tls::TLSOPT_TO_LE; | |
1956 | return tls::TLSOPT_TO_IE; | |
1957 | ||
1958 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
1959 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
1960 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
1961 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
1962 | // This is Local-Dynamic, which refers to a local symbol in the | |
1963 | // dynamic TLS block. Since we know that we generating an | |
1964 | // executable, we can switch to Local-Exec. | |
1965 | return tls::TLSOPT_TO_LE; | |
1966 | ||
1967 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
1968 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
1969 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
1970 | // Another type of Local-Dynamic relocation. | |
1971 | return tls::TLSOPT_TO_LE; | |
1972 | ||
1973 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
1974 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
1975 | case elfcpp::R_SPARC_TLS_IE_LD: | |
1976 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 1977 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
1978 | // These are Initial-Exec relocs which get the thread offset |
1979 | // from the GOT. If we know that we are linking against the | |
1980 | // local symbol, we can switch to Local-Exec, which links the | |
1981 | // thread offset into the instruction. | |
1982 | if (is_final) | |
1983 | return tls::TLSOPT_TO_LE; | |
1984 | return tls::TLSOPT_NONE; | |
1985 | ||
1986 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec | |
1987 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1988 | // When we already have Local-Exec, there is nothing further we | |
1989 | // can do. | |
1990 | return tls::TLSOPT_NONE; | |
1991 | ||
1992 | default: | |
1993 | gold_unreachable(); | |
1994 | } | |
1995 | } | |
1996 | ||
95a2c8d6 RS |
1997 | // Get the Reference_flags for a particular relocation. |
1998 | ||
1999 | template<int size, bool big_endian> | |
2000 | int | |
2001 | Target_sparc<size, big_endian>::Scan::get_reference_flags(unsigned int r_type) | |
2002 | { | |
2003 | r_type &= 0xff; | |
2004 | switch (r_type) | |
2005 | { | |
2006 | case elfcpp::R_SPARC_NONE: | |
2007 | case elfcpp::R_SPARC_REGISTER: | |
2008 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
2009 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
2010 | // No symbol reference. | |
2011 | return 0; | |
2012 | ||
2013 | case elfcpp::R_SPARC_UA64: | |
2014 | case elfcpp::R_SPARC_64: | |
2015 | case elfcpp::R_SPARC_HIX22: | |
2016 | case elfcpp::R_SPARC_LOX10: | |
2615994e | 2017 | case elfcpp::R_SPARC_H34: |
95a2c8d6 RS |
2018 | case elfcpp::R_SPARC_H44: |
2019 | case elfcpp::R_SPARC_M44: | |
2020 | case elfcpp::R_SPARC_L44: | |
2021 | case elfcpp::R_SPARC_HH22: | |
2022 | case elfcpp::R_SPARC_HM10: | |
2023 | case elfcpp::R_SPARC_LM22: | |
2024 | case elfcpp::R_SPARC_HI22: | |
2025 | case elfcpp::R_SPARC_LO10: | |
2026 | case elfcpp::R_SPARC_OLO10: | |
2027 | case elfcpp::R_SPARC_UA32: | |
2028 | case elfcpp::R_SPARC_32: | |
2029 | case elfcpp::R_SPARC_UA16: | |
2030 | case elfcpp::R_SPARC_16: | |
2031 | case elfcpp::R_SPARC_11: | |
2032 | case elfcpp::R_SPARC_10: | |
2033 | case elfcpp::R_SPARC_8: | |
2034 | case elfcpp::R_SPARC_7: | |
2035 | case elfcpp::R_SPARC_6: | |
2036 | case elfcpp::R_SPARC_5: | |
2037 | return Symbol::ABSOLUTE_REF; | |
2038 | ||
2039 | case elfcpp::R_SPARC_DISP8: | |
2040 | case elfcpp::R_SPARC_DISP16: | |
2041 | case elfcpp::R_SPARC_DISP32: | |
2042 | case elfcpp::R_SPARC_DISP64: | |
2043 | case elfcpp::R_SPARC_PC_HH22: | |
2044 | case elfcpp::R_SPARC_PC_HM10: | |
2045 | case elfcpp::R_SPARC_PC_LM22: | |
2046 | case elfcpp::R_SPARC_PC10: | |
2047 | case elfcpp::R_SPARC_PC22: | |
2048 | case elfcpp::R_SPARC_WDISP30: | |
2049 | case elfcpp::R_SPARC_WDISP22: | |
2050 | case elfcpp::R_SPARC_WDISP19: | |
2051 | case elfcpp::R_SPARC_WDISP16: | |
2615994e | 2052 | case elfcpp::R_SPARC_WDISP10: |
95a2c8d6 RS |
2053 | return Symbol::RELATIVE_REF; |
2054 | ||
2055 | case elfcpp::R_SPARC_PLT64: | |
2056 | case elfcpp::R_SPARC_PLT32: | |
2057 | case elfcpp::R_SPARC_HIPLT22: | |
2058 | case elfcpp::R_SPARC_LOPLT10: | |
2059 | case elfcpp::R_SPARC_PCPLT10: | |
2060 | return Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; | |
2061 | ||
2062 | case elfcpp::R_SPARC_PCPLT32: | |
2063 | case elfcpp::R_SPARC_PCPLT22: | |
2064 | case elfcpp::R_SPARC_WPLT30: | |
2065 | return Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; | |
2066 | ||
2067 | case elfcpp::R_SPARC_GOTDATA_OP: | |
2068 | case elfcpp::R_SPARC_GOTDATA_OP_HIX22: | |
2069 | case elfcpp::R_SPARC_GOTDATA_OP_LOX10: | |
2070 | case elfcpp::R_SPARC_GOT10: | |
2071 | case elfcpp::R_SPARC_GOT13: | |
2072 | case elfcpp::R_SPARC_GOT22: | |
2073 | // Absolute in GOT. | |
2074 | return Symbol::ABSOLUTE_REF; | |
2075 | ||
2076 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2077 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2078 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2079 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2080 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
2081 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2082 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2083 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2084 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2085 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2086 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2087 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2088 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2089 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2090 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2091 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2092 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
2093 | case elfcpp::R_SPARC_TLS_IE_ADD: | |
2094 | return Symbol::TLS_REF; | |
2095 | ||
2096 | case elfcpp::R_SPARC_COPY: | |
2097 | case elfcpp::R_SPARC_GLOB_DAT: | |
2098 | case elfcpp::R_SPARC_JMP_SLOT: | |
8c2bf391 | 2099 | case elfcpp::R_SPARC_JMP_IREL: |
95a2c8d6 | 2100 | case elfcpp::R_SPARC_RELATIVE: |
8c2bf391 | 2101 | case elfcpp::R_SPARC_IRELATIVE: |
95a2c8d6 RS |
2102 | case elfcpp::R_SPARC_TLS_DTPMOD64: |
2103 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
2104 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
2105 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
2106 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
2107 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
2108 | default: | |
2109 | // Not expected. We will give an error later. | |
2110 | return 0; | |
2111 | } | |
2112 | } | |
2113 | ||
f5314dd5 DM |
2114 | // Generate a PLT entry slot for a call to __tls_get_addr |
2115 | template<int size, bool big_endian> | |
2116 | void | |
2117 | Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab, | |
2118 | Layout* layout, | |
2119 | Target_sparc<size, big_endian>* target) | |
2120 | { | |
2121 | Symbol* gsym = target->tls_get_addr_sym(symtab); | |
2122 | ||
2123 | target->make_plt_entry(symtab, layout, gsym); | |
2124 | } | |
2125 | ||
2126 | // Report an unsupported relocation against a local symbol. | |
2127 | ||
2128 | template<int size, bool big_endian> | |
2129 | void | |
2130 | Target_sparc<size, big_endian>::Scan::unsupported_reloc_local( | |
6fa2a40b | 2131 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
2132 | unsigned int r_type) |
2133 | { | |
2134 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
2135 | object->name().c_str(), r_type); | |
2136 | } | |
2137 | ||
32b769e1 DM |
2138 | // We are about to emit a dynamic relocation of type R_TYPE. If the |
2139 | // dynamic linker does not support it, issue an error. | |
2140 | ||
2141 | template<int size, bool big_endian> | |
2142 | void | |
2143 | Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type) | |
2144 | { | |
2145 | gold_assert(r_type != elfcpp::R_SPARC_NONE); | |
2146 | ||
2147 | if (size == 64) | |
2148 | { | |
2149 | switch (r_type) | |
2150 | { | |
2151 | // These are the relocation types supported by glibc for sparc 64-bit. | |
2152 | case elfcpp::R_SPARC_RELATIVE: | |
8c2bf391 | 2153 | case elfcpp::R_SPARC_IRELATIVE: |
32b769e1 | 2154 | case elfcpp::R_SPARC_COPY: |
55872e49 | 2155 | case elfcpp::R_SPARC_32: |
32b769e1 DM |
2156 | case elfcpp::R_SPARC_64: |
2157 | case elfcpp::R_SPARC_GLOB_DAT: | |
2158 | case elfcpp::R_SPARC_JMP_SLOT: | |
8c2bf391 | 2159 | case elfcpp::R_SPARC_JMP_IREL: |
32b769e1 DM |
2160 | case elfcpp::R_SPARC_TLS_DTPMOD64: |
2161 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
2162 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
2163 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2164 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2165 | case elfcpp::R_SPARC_8: | |
2166 | case elfcpp::R_SPARC_16: | |
2167 | case elfcpp::R_SPARC_DISP8: | |
2168 | case elfcpp::R_SPARC_DISP16: | |
2169 | case elfcpp::R_SPARC_DISP32: | |
2170 | case elfcpp::R_SPARC_WDISP30: | |
2171 | case elfcpp::R_SPARC_LO10: | |
2172 | case elfcpp::R_SPARC_HI22: | |
2173 | case elfcpp::R_SPARC_OLO10: | |
2615994e | 2174 | case elfcpp::R_SPARC_H34: |
32b769e1 DM |
2175 | case elfcpp::R_SPARC_H44: |
2176 | case elfcpp::R_SPARC_M44: | |
2177 | case elfcpp::R_SPARC_L44: | |
2178 | case elfcpp::R_SPARC_HH22: | |
2179 | case elfcpp::R_SPARC_HM10: | |
2180 | case elfcpp::R_SPARC_LM22: | |
2181 | case elfcpp::R_SPARC_UA16: | |
2182 | case elfcpp::R_SPARC_UA32: | |
2183 | case elfcpp::R_SPARC_UA64: | |
2184 | return; | |
2185 | ||
2186 | default: | |
2187 | break; | |
2188 | } | |
2189 | } | |
2190 | else | |
2191 | { | |
2192 | switch (r_type) | |
2193 | { | |
2194 | // These are the relocation types supported by glibc for sparc 32-bit. | |
2195 | case elfcpp::R_SPARC_RELATIVE: | |
8c2bf391 | 2196 | case elfcpp::R_SPARC_IRELATIVE: |
32b769e1 DM |
2197 | case elfcpp::R_SPARC_COPY: |
2198 | case elfcpp::R_SPARC_GLOB_DAT: | |
2199 | case elfcpp::R_SPARC_32: | |
2200 | case elfcpp::R_SPARC_JMP_SLOT: | |
8c2bf391 | 2201 | case elfcpp::R_SPARC_JMP_IREL: |
32b769e1 DM |
2202 | case elfcpp::R_SPARC_TLS_DTPMOD32: |
2203 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
2204 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
2205 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2206 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2207 | case elfcpp::R_SPARC_8: | |
2208 | case elfcpp::R_SPARC_16: | |
2209 | case elfcpp::R_SPARC_DISP8: | |
2210 | case elfcpp::R_SPARC_DISP16: | |
2211 | case elfcpp::R_SPARC_DISP32: | |
2212 | case elfcpp::R_SPARC_LO10: | |
2213 | case elfcpp::R_SPARC_WDISP30: | |
2214 | case elfcpp::R_SPARC_HI22: | |
2215 | case elfcpp::R_SPARC_UA16: | |
2216 | case elfcpp::R_SPARC_UA32: | |
2217 | return; | |
2218 | ||
2219 | default: | |
2220 | break; | |
2221 | } | |
2222 | } | |
2223 | ||
2224 | // This prevents us from issuing more than one error per reloc | |
2225 | // section. But we can still wind up issuing more than one | |
2226 | // error per object file. | |
2227 | if (this->issued_non_pic_error_) | |
2228 | return; | |
33aea2fd | 2229 | gold_assert(parameters->options().output_is_position_independent()); |
32b769e1 DM |
2230 | object->error(_("requires unsupported dynamic reloc; " |
2231 | "recompile with -fPIC")); | |
2232 | this->issued_non_pic_error_ = true; | |
2233 | return; | |
2234 | } | |
2235 | ||
8c2bf391 DM |
2236 | // Return whether we need to make a PLT entry for a relocation of the |
2237 | // given type against a STT_GNU_IFUNC symbol. | |
2238 | ||
2239 | template<int size, bool big_endian> | |
2240 | bool | |
2241 | Target_sparc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( | |
2242 | Sized_relobj_file<size, big_endian>* object, | |
2243 | unsigned int r_type) | |
2244 | { | |
2245 | int flags = Scan::get_reference_flags(r_type); | |
2246 | if (flags & Symbol::TLS_REF) | |
2247 | gold_error(_("%s: unsupported TLS reloc %u for IFUNC symbol"), | |
2e702c99 | 2248 | object->name().c_str(), r_type); |
8c2bf391 DM |
2249 | return flags != 0; |
2250 | } | |
2251 | ||
f5314dd5 DM |
2252 | // Scan a relocation for a local symbol. |
2253 | ||
2254 | template<int size, bool big_endian> | |
2255 | inline void | |
2256 | Target_sparc<size, big_endian>::Scan::local( | |
f5314dd5 DM |
2257 | Symbol_table* symtab, |
2258 | Layout* layout, | |
2259 | Target_sparc<size, big_endian>* target, | |
6fa2a40b | 2260 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
2261 | unsigned int data_shndx, |
2262 | Output_section* output_section, | |
2263 | const elfcpp::Rela<size, big_endian>& reloc, | |
2264 | unsigned int r_type, | |
bfdfa4cd AM |
2265 | const elfcpp::Sym<size, big_endian>& lsym, |
2266 | bool is_discarded) | |
f5314dd5 | 2267 | { |
bfdfa4cd AM |
2268 | if (is_discarded) |
2269 | return; | |
2270 | ||
8c2bf391 | 2271 | bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; |
f5314dd5 | 2272 | unsigned int orig_r_type = r_type; |
f5314dd5 | 2273 | r_type &= 0xff; |
8c2bf391 DM |
2274 | |
2275 | if (is_ifunc | |
2276 | && this->reloc_needs_plt_for_ifunc(object, r_type)) | |
2277 | { | |
2278 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2279 | target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym); | |
2280 | } | |
2281 | ||
f5314dd5 DM |
2282 | switch (r_type) |
2283 | { | |
2284 | case elfcpp::R_SPARC_NONE: | |
2285 | case elfcpp::R_SPARC_REGISTER: | |
2286 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
2287 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
2288 | break; | |
2289 | ||
2290 | case elfcpp::R_SPARC_64: | |
2291 | case elfcpp::R_SPARC_32: | |
2292 | // If building a shared library (or a position-independent | |
2293 | // executable), we need to create a dynamic relocation for | |
2294 | // this location. The relocation applied at link time will | |
2295 | // apply the link-time value, so we flag the location with | |
2296 | // an R_SPARC_RELATIVE relocation so the dynamic loader can | |
2297 | // relocate it easily. | |
7160c10d JC |
2298 | if (parameters->options().output_is_position_independent() |
2299 | && ((size == 64 && r_type == elfcpp::R_SPARC_64) | |
2300 | || (size == 32 && r_type == elfcpp::R_SPARC_32))) | |
2e702c99 RM |
2301 | { |
2302 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2303 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2304 | rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE, | |
f5314dd5 DM |
2305 | output_section, data_shndx, |
2306 | reloc.get_r_offset(), | |
8c2bf391 | 2307 | reloc.get_r_addend(), is_ifunc); |
7160c10d | 2308 | break; |
2e702c99 | 2309 | } |
d8e90251 | 2310 | // Fall through. |
f5314dd5 DM |
2311 | |
2312 | case elfcpp::R_SPARC_HIX22: | |
2313 | case elfcpp::R_SPARC_LOX10: | |
2615994e | 2314 | case elfcpp::R_SPARC_H34: |
f5314dd5 DM |
2315 | case elfcpp::R_SPARC_H44: |
2316 | case elfcpp::R_SPARC_M44: | |
2317 | case elfcpp::R_SPARC_L44: | |
2318 | case elfcpp::R_SPARC_HH22: | |
2319 | case elfcpp::R_SPARC_HM10: | |
2320 | case elfcpp::R_SPARC_LM22: | |
2321 | case elfcpp::R_SPARC_UA64: | |
2322 | case elfcpp::R_SPARC_UA32: | |
2323 | case elfcpp::R_SPARC_UA16: | |
2324 | case elfcpp::R_SPARC_HI22: | |
2325 | case elfcpp::R_SPARC_LO10: | |
2326 | case elfcpp::R_SPARC_OLO10: | |
2327 | case elfcpp::R_SPARC_16: | |
2328 | case elfcpp::R_SPARC_11: | |
2329 | case elfcpp::R_SPARC_10: | |
2330 | case elfcpp::R_SPARC_8: | |
2331 | case elfcpp::R_SPARC_7: | |
2332 | case elfcpp::R_SPARC_6: | |
2333 | case elfcpp::R_SPARC_5: | |
2334 | // If building a shared library (or a position-independent | |
2335 | // executable), we need to create a dynamic relocation for | |
2336 | // this location. | |
2337 | if (parameters->options().output_is_position_independent()) | |
2e702c99 RM |
2338 | { |
2339 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2340 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
32b769e1 DM |
2341 | |
2342 | check_non_pic(object, r_type); | |
2e702c99 RM |
2343 | if (lsym.get_st_type() != elfcpp::STT_SECTION) |
2344 | { | |
2345 | rela_dyn->add_local(object, r_sym, orig_r_type, output_section, | |
f5314dd5 DM |
2346 | data_shndx, reloc.get_r_offset(), |
2347 | reloc.get_r_addend()); | |
2e702c99 RM |
2348 | } |
2349 | else | |
2350 | { | |
2351 | gold_assert(lsym.get_st_value() == 0); | |
0da6fa6c DM |
2352 | rela_dyn->add_symbolless_local_addend(object, r_sym, orig_r_type, |
2353 | output_section, data_shndx, | |
2354 | reloc.get_r_offset(), | |
2355 | reloc.get_r_addend()); | |
2e702c99 RM |
2356 | } |
2357 | } | |
f5314dd5 DM |
2358 | break; |
2359 | ||
2360 | case elfcpp::R_SPARC_WDISP30: | |
8861f32b | 2361 | case elfcpp::R_SPARC_WPLT30: |
f5314dd5 DM |
2362 | case elfcpp::R_SPARC_WDISP22: |
2363 | case elfcpp::R_SPARC_WDISP19: | |
2364 | case elfcpp::R_SPARC_WDISP16: | |
2615994e | 2365 | case elfcpp::R_SPARC_WDISP10: |
f5314dd5 DM |
2366 | case elfcpp::R_SPARC_DISP8: |
2367 | case elfcpp::R_SPARC_DISP16: | |
2368 | case elfcpp::R_SPARC_DISP32: | |
2369 | case elfcpp::R_SPARC_DISP64: | |
2370 | case elfcpp::R_SPARC_PC10: | |
2371 | case elfcpp::R_SPARC_PC22: | |
2372 | break; | |
2373 | ||
024c4466 DM |
2374 | case elfcpp::R_SPARC_GOTDATA_OP: |
2375 | case elfcpp::R_SPARC_GOTDATA_OP_HIX22: | |
2376 | case elfcpp::R_SPARC_GOTDATA_OP_LOX10: | |
2a1079e8 DM |
2377 | // We will optimize this into a GOT relative relocation |
2378 | // and code transform the GOT load into an addition. | |
2379 | break; | |
2380 | ||
f5314dd5 DM |
2381 | case elfcpp::R_SPARC_GOT10: |
2382 | case elfcpp::R_SPARC_GOT13: | |
2383 | case elfcpp::R_SPARC_GOT22: | |
2384 | { | |
2e702c99 RM |
2385 | // The symbol requires a GOT entry. |
2386 | Output_data_got<size, big_endian>* got; | |
2387 | unsigned int r_sym; | |
f5314dd5 DM |
2388 | |
2389 | got = target->got_section(symtab, layout); | |
2390 | r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2391 | ||
2392 | // If we are generating a shared object, we need to add a | |
2393 | // dynamic relocation for this symbol's GOT entry. | |
2394 | if (parameters->options().output_is_position_independent()) | |
2395 | { | |
2396 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
2397 | { | |
2398 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
8c2bf391 | 2399 | unsigned int off = got->add_constant(0); |
f5314dd5 DM |
2400 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); |
2401 | rela_dyn->add_local_relative(object, r_sym, | |
2402 | elfcpp::R_SPARC_RELATIVE, | |
8c2bf391 | 2403 | got, off, 0, is_ifunc); |
f5314dd5 DM |
2404 | } |
2405 | } | |
2406 | else | |
2407 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
2408 | } | |
2409 | break; | |
2410 | ||
2411 | // These are initial TLS relocs, which are expected when | |
2412 | // linking. | |
2413 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2414 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2415 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2416 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2417 | case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic | |
2418 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2419 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2420 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2421 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2422 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2423 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2424 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2425 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2426 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2427 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 2428 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
2429 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec |
2430 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2431 | { | |
2432 | bool output_is_shared = parameters->options().shared(); | |
2433 | const tls::Tls_optimization optimized_type | |
2e702c99 | 2434 | = optimize_tls_reloc(!output_is_shared, r_type); |
f5314dd5 DM |
2435 | switch (r_type) |
2436 | { | |
2437 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2438 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2439 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2440 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2441 | if (optimized_type == tls::TLSOPT_NONE) | |
2442 | { | |
2e702c99 RM |
2443 | // Create a pair of GOT entries for the module index and |
2444 | // dtv-relative offset. | |
2445 | Output_data_got<size, big_endian>* got | |
2446 | = target->got_section(symtab, layout); | |
2447 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
d491d34e ILT |
2448 | unsigned int shndx = lsym.get_st_shndx(); |
2449 | bool is_ordinary; | |
2450 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
2451 | if (!is_ordinary) | |
2452 | object->error(_("local symbol %u has bad shndx %u"), | |
2453 | r_sym, shndx); | |
2454 | else | |
2e702c99 | 2455 | got->add_local_pair_with_rel(object, r_sym, |
83896202 ILT |
2456 | lsym.get_st_shndx(), |
2457 | GOT_TYPE_TLS_PAIR, | |
2458 | target->rela_dyn_section(layout), | |
2459 | (size == 64 | |
2460 | ? elfcpp::R_SPARC_TLS_DTPMOD64 | |
bd73a62d | 2461 | : elfcpp::R_SPARC_TLS_DTPMOD32)); |
f5314dd5 DM |
2462 | if (r_type == elfcpp::R_SPARC_TLS_GD_CALL) |
2463 | generate_tls_call(symtab, layout, target); | |
2464 | } | |
2465 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2466 | unsupported_reloc_local(object, r_type); | |
2467 | break; | |
2468 | ||
2469 | case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic | |
2470 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2471 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2472 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2473 | if (optimized_type == tls::TLSOPT_NONE) | |
2474 | { | |
2475 | // Create a GOT entry for the module index. | |
2476 | target->got_mod_index_entry(symtab, layout, object); | |
2477 | ||
2478 | if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL) | |
2479 | generate_tls_call(symtab, layout, target); | |
2480 | } | |
2481 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2482 | unsupported_reloc_local(object, r_type); | |
2483 | break; | |
2484 | ||
2485 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2486 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2487 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2488 | break; | |
2489 | ||
2490 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2491 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2492 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2493 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 2494 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
2495 | layout->set_has_static_tls(); |
2496 | if (optimized_type == tls::TLSOPT_NONE) | |
2497 | { | |
2498 | // Create a GOT entry for the tp-relative offset. | |
2499 | Output_data_got<size, big_endian>* got | |
2500 | = target->got_section(symtab, layout); | |
2501 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2502 | ||
2503 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET)) | |
2504 | { | |
2505 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
0da6fa6c DM |
2506 | unsigned int off = got->add_constant(0); |
2507 | ||
2508 | object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET, off); | |
684b268a | 2509 | |
0da6fa6c DM |
2510 | rela_dyn->add_symbolless_local_addend(object, r_sym, |
2511 | (size == 64 ? | |
2512 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
2513 | elfcpp::R_SPARC_TLS_TPOFF32), | |
2514 | got, off, 0); | |
f5314dd5 DM |
2515 | } |
2516 | } | |
2517 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2518 | unsupported_reloc_local(object, r_type); | |
2519 | break; | |
2520 | ||
2521 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec | |
2522 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2523 | layout->set_has_static_tls(); | |
2524 | if (output_is_shared) | |
2525 | { | |
2e702c99 RM |
2526 | // We need to create a dynamic relocation. |
2527 | gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION); | |
2528 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2529 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2530 | rela_dyn->add_symbolless_local_addend(object, r_sym, r_type, | |
0da6fa6c DM |
2531 | output_section, data_shndx, |
2532 | reloc.get_r_offset(), 0); | |
f5314dd5 DM |
2533 | } |
2534 | break; | |
2535 | } | |
2536 | } | |
2537 | break; | |
2538 | ||
2539 | // These are relocations which should only be seen by the | |
2540 | // dynamic linker, and should never be seen here. | |
2541 | case elfcpp::R_SPARC_COPY: | |
2542 | case elfcpp::R_SPARC_GLOB_DAT: | |
2543 | case elfcpp::R_SPARC_JMP_SLOT: | |
8c2bf391 | 2544 | case elfcpp::R_SPARC_JMP_IREL: |
f5314dd5 | 2545 | case elfcpp::R_SPARC_RELATIVE: |
8c2bf391 | 2546 | case elfcpp::R_SPARC_IRELATIVE: |
f5314dd5 DM |
2547 | case elfcpp::R_SPARC_TLS_DTPMOD64: |
2548 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
2549 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
2550 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
2551 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
2552 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
2553 | gold_error(_("%s: unexpected reloc %u in object file"), | |
2554 | object->name().c_str(), r_type); | |
2555 | break; | |
2556 | ||
2557 | default: | |
2558 | unsupported_reloc_local(object, r_type); | |
2559 | break; | |
2560 | } | |
2561 | } | |
2562 | ||
2563 | // Report an unsupported relocation against a global symbol. | |
2564 | ||
2565 | template<int size, bool big_endian> | |
2566 | void | |
2567 | Target_sparc<size, big_endian>::Scan::unsupported_reloc_global( | |
6fa2a40b | 2568 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
2569 | unsigned int r_type, |
2570 | Symbol* gsym) | |
2571 | { | |
2572 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), | |
2573 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
2574 | } | |
2575 | ||
2576 | // Scan a relocation for a global symbol. | |
2577 | ||
2578 | template<int size, bool big_endian> | |
2579 | inline void | |
2580 | Target_sparc<size, big_endian>::Scan::global( | |
f5314dd5 DM |
2581 | Symbol_table* symtab, |
2582 | Layout* layout, | |
2583 | Target_sparc<size, big_endian>* target, | |
6fa2a40b | 2584 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
2585 | unsigned int data_shndx, |
2586 | Output_section* output_section, | |
2587 | const elfcpp::Rela<size, big_endian>& reloc, | |
2588 | unsigned int r_type, | |
2589 | Symbol* gsym) | |
2590 | { | |
2591 | unsigned int orig_r_type = r_type; | |
8c2bf391 | 2592 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
f5314dd5 | 2593 | |
9efe6174 ILT |
2594 | // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got |
2595 | // section. We check here to avoid creating a dynamic reloc against | |
2596 | // _GLOBAL_OFFSET_TABLE_. | |
2597 | if (!target->has_got_section() | |
2598 | && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0) | |
2599 | target->got_section(symtab, layout); | |
2600 | ||
f5314dd5 | 2601 | r_type &= 0xff; |
8c2bf391 DM |
2602 | |
2603 | // A STT_GNU_IFUNC symbol may require a PLT entry. | |
2604 | if (is_ifunc | |
2605 | && this->reloc_needs_plt_for_ifunc(object, r_type)) | |
2606 | target->make_plt_entry(symtab, layout, gsym); | |
2607 | ||
f5314dd5 DM |
2608 | switch (r_type) |
2609 | { | |
2610 | case elfcpp::R_SPARC_NONE: | |
2611 | case elfcpp::R_SPARC_REGISTER: | |
2612 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
2613 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
2614 | break; | |
2615 | ||
2616 | case elfcpp::R_SPARC_PLT64: | |
2617 | case elfcpp::R_SPARC_PLT32: | |
2618 | case elfcpp::R_SPARC_HIPLT22: | |
2619 | case elfcpp::R_SPARC_LOPLT10: | |
2620 | case elfcpp::R_SPARC_PCPLT32: | |
2621 | case elfcpp::R_SPARC_PCPLT22: | |
2622 | case elfcpp::R_SPARC_PCPLT10: | |
2623 | case elfcpp::R_SPARC_WPLT30: | |
2624 | // If the symbol is fully resolved, this is just a PC32 reloc. | |
2625 | // Otherwise we need a PLT entry. | |
2626 | if (gsym->final_value_is_known()) | |
2627 | break; | |
2628 | // If building a shared library, we can also skip the PLT entry | |
2629 | // if the symbol is defined in the output file and is protected | |
2630 | // or hidden. | |
2631 | if (gsym->is_defined() | |
2e702c99 RM |
2632 | && !gsym->is_from_dynobj() |
2633 | && !gsym->is_preemptible()) | |
f5314dd5 DM |
2634 | break; |
2635 | target->make_plt_entry(symtab, layout, gsym); | |
2636 | break; | |
2637 | ||
2638 | case elfcpp::R_SPARC_DISP8: | |
2639 | case elfcpp::R_SPARC_DISP16: | |
2640 | case elfcpp::R_SPARC_DISP32: | |
2641 | case elfcpp::R_SPARC_DISP64: | |
2642 | case elfcpp::R_SPARC_PC_HH22: | |
2643 | case elfcpp::R_SPARC_PC_HM10: | |
2644 | case elfcpp::R_SPARC_PC_LM22: | |
2645 | case elfcpp::R_SPARC_PC10: | |
2646 | case elfcpp::R_SPARC_PC22: | |
2647 | case elfcpp::R_SPARC_WDISP30: | |
2648 | case elfcpp::R_SPARC_WDISP22: | |
2649 | case elfcpp::R_SPARC_WDISP19: | |
2650 | case elfcpp::R_SPARC_WDISP16: | |
2615994e | 2651 | case elfcpp::R_SPARC_WDISP10: |
f5314dd5 DM |
2652 | { |
2653 | if (gsym->needs_plt_entry()) | |
2654 | target->make_plt_entry(symtab, layout, gsym); | |
2655 | // Make a dynamic relocation if necessary. | |
95a2c8d6 | 2656 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type))) |
f5314dd5 | 2657 | { |
a82bef93 ST |
2658 | if (parameters->options().output_is_executable() |
2659 | && gsym->may_need_copy_reloc()) | |
f5314dd5 | 2660 | { |
12c0daef | 2661 | target->copy_reloc(symtab, layout, object, |
f5314dd5 DM |
2662 | data_shndx, output_section, gsym, |
2663 | reloc); | |
2664 | } | |
2665 | else | |
2666 | { | |
2667 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
32b769e1 | 2668 | check_non_pic(object, r_type); |
f5314dd5 DM |
2669 | rela_dyn->add_global(gsym, orig_r_type, output_section, object, |
2670 | data_shndx, reloc.get_r_offset(), | |
2671 | reloc.get_r_addend()); | |
2672 | } | |
2673 | } | |
2674 | } | |
2675 | break; | |
2676 | ||
2677 | case elfcpp::R_SPARC_UA64: | |
2678 | case elfcpp::R_SPARC_64: | |
2679 | case elfcpp::R_SPARC_HIX22: | |
2680 | case elfcpp::R_SPARC_LOX10: | |
2615994e | 2681 | case elfcpp::R_SPARC_H34: |
f5314dd5 DM |
2682 | case elfcpp::R_SPARC_H44: |
2683 | case elfcpp::R_SPARC_M44: | |
2684 | case elfcpp::R_SPARC_L44: | |
2685 | case elfcpp::R_SPARC_HH22: | |
2686 | case elfcpp::R_SPARC_HM10: | |
2687 | case elfcpp::R_SPARC_LM22: | |
2688 | case elfcpp::R_SPARC_HI22: | |
2689 | case elfcpp::R_SPARC_LO10: | |
2690 | case elfcpp::R_SPARC_OLO10: | |
2691 | case elfcpp::R_SPARC_UA32: | |
2692 | case elfcpp::R_SPARC_32: | |
2693 | case elfcpp::R_SPARC_UA16: | |
2694 | case elfcpp::R_SPARC_16: | |
2695 | case elfcpp::R_SPARC_11: | |
2696 | case elfcpp::R_SPARC_10: | |
2697 | case elfcpp::R_SPARC_8: | |
2698 | case elfcpp::R_SPARC_7: | |
2699 | case elfcpp::R_SPARC_6: | |
2700 | case elfcpp::R_SPARC_5: | |
2701 | { | |
2e702c99 RM |
2702 | // Make a PLT entry if necessary. |
2703 | if (gsym->needs_plt_entry()) | |
2704 | { | |
2705 | target->make_plt_entry(symtab, layout, gsym); | |
2706 | // Since this is not a PC-relative relocation, we may be | |
2707 | // taking the address of a function. In that case we need to | |
2708 | // set the entry in the dynamic symbol table to the address of | |
2709 | // the PLT entry. | |
2710 | if (gsym->is_from_dynobj() && !parameters->options().shared()) | |
2711 | gsym->set_needs_dynsym_value(); | |
2712 | } | |
2713 | // Make a dynamic relocation if necessary. | |
2714 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type))) | |
2715 | { | |
0da6fa6c DM |
2716 | unsigned int r_off = reloc.get_r_offset(); |
2717 | ||
2718 | // The assembler can sometimes emit unaligned relocations | |
2e702c99 | 2719 | // for dwarf2 cfi directives. |
0da6fa6c DM |
2720 | switch (r_type) |
2721 | { | |
2722 | case elfcpp::R_SPARC_16: | |
2723 | if (r_off & 0x1) | |
2724 | orig_r_type = r_type = elfcpp::R_SPARC_UA16; | |
2725 | break; | |
2726 | case elfcpp::R_SPARC_32: | |
2727 | if (r_off & 0x3) | |
2728 | orig_r_type = r_type = elfcpp::R_SPARC_UA32; | |
2729 | break; | |
2730 | case elfcpp::R_SPARC_64: | |
2731 | if (r_off & 0x7) | |
2732 | orig_r_type = r_type = elfcpp::R_SPARC_UA64; | |
2733 | break; | |
2734 | case elfcpp::R_SPARC_UA16: | |
2735 | if (!(r_off & 0x1)) | |
2736 | orig_r_type = r_type = elfcpp::R_SPARC_16; | |
2737 | break; | |
2738 | case elfcpp::R_SPARC_UA32: | |
2739 | if (!(r_off & 0x3)) | |
2740 | orig_r_type = r_type = elfcpp::R_SPARC_32; | |
2741 | break; | |
2742 | case elfcpp::R_SPARC_UA64: | |
2743 | if (!(r_off & 0x7)) | |
2744 | orig_r_type = r_type = elfcpp::R_SPARC_64; | |
2745 | break; | |
2746 | } | |
2747 | ||
a82bef93 ST |
2748 | if (!parameters->options().output_is_position_independent() |
2749 | && gsym->may_need_copy_reloc()) | |
2e702c99 RM |
2750 | { |
2751 | target->copy_reloc(symtab, layout, object, | |
2752 | data_shndx, output_section, gsym, reloc); | |
2753 | } | |
8c2bf391 DM |
2754 | else if (((size == 64 && r_type == elfcpp::R_SPARC_64) |
2755 | || (size == 32 && r_type == elfcpp::R_SPARC_32)) | |
2756 | && gsym->type() == elfcpp::STT_GNU_IFUNC | |
2757 | && gsym->can_use_relative_reloc(false) | |
2758 | && !gsym->is_from_dynobj() | |
2759 | && !gsym->is_undefined() | |
2760 | && !gsym->is_preemptible()) | |
2761 | { | |
2762 | // Use an IRELATIVE reloc for a locally defined | |
2763 | // STT_GNU_IFUNC symbol. This makes a function | |
2764 | // address in a PIE executable match the address in a | |
2765 | // shared library that it links against. | |
2766 | Reloc_section* rela_dyn = | |
2767 | target->rela_ifunc_section(layout); | |
2768 | unsigned int r_type = elfcpp::R_SPARC_IRELATIVE; | |
2769 | rela_dyn->add_symbolless_global_addend(gsym, r_type, | |
2770 | output_section, object, | |
2771 | data_shndx, | |
2772 | reloc.get_r_offset(), | |
2773 | reloc.get_r_addend()); | |
2774 | } | |
7160c10d JC |
2775 | else if (((size == 64 && r_type == elfcpp::R_SPARC_64) |
2776 | || (size == 32 && r_type == elfcpp::R_SPARC_32)) | |
2e702c99 RM |
2777 | && gsym->can_use_relative_reloc(false)) |
2778 | { | |
2779 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2780 | rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE, | |
f5314dd5 DM |
2781 | output_section, object, |
2782 | data_shndx, reloc.get_r_offset(), | |
8c2bf391 | 2783 | reloc.get_r_addend(), is_ifunc); |
2e702c99 RM |
2784 | } |
2785 | else | |
2786 | { | |
2787 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
f5314dd5 | 2788 | |
32b769e1 | 2789 | check_non_pic(object, r_type); |
0da6fa6c DM |
2790 | if (gsym->is_from_dynobj() |
2791 | || gsym->is_undefined() | |
2792 | || gsym->is_preemptible()) | |
2793 | rela_dyn->add_global(gsym, orig_r_type, output_section, | |
2794 | object, data_shndx, | |
2795 | reloc.get_r_offset(), | |
2796 | reloc.get_r_addend()); | |
2797 | else | |
2798 | rela_dyn->add_symbolless_global_addend(gsym, orig_r_type, | |
2799 | output_section, | |
2800 | object, data_shndx, | |
2801 | reloc.get_r_offset(), | |
2802 | reloc.get_r_addend()); | |
2e702c99 RM |
2803 | } |
2804 | } | |
f5314dd5 DM |
2805 | } |
2806 | break; | |
2807 | ||
024c4466 DM |
2808 | case elfcpp::R_SPARC_GOTDATA_OP: |
2809 | case elfcpp::R_SPARC_GOTDATA_OP_HIX22: | |
2810 | case elfcpp::R_SPARC_GOTDATA_OP_LOX10: | |
2a1079e8 | 2811 | if (gsym->is_defined() |
2e702c99 RM |
2812 | && !gsym->is_from_dynobj() |
2813 | && !gsym->is_preemptible() | |
2a1079e8 DM |
2814 | && !is_ifunc) |
2815 | { | |
2816 | // We will optimize this into a GOT relative relocation | |
2817 | // and code transform the GOT load into an addition. | |
2818 | break; | |
2819 | } | |
d8e90251 | 2820 | // Fall through. |
f5314dd5 DM |
2821 | case elfcpp::R_SPARC_GOT10: |
2822 | case elfcpp::R_SPARC_GOT13: | |
2823 | case elfcpp::R_SPARC_GOT22: | |
2824 | { | |
2e702c99 RM |
2825 | // The symbol requires a GOT entry. |
2826 | Output_data_got<size, big_endian>* got; | |
f5314dd5 DM |
2827 | |
2828 | got = target->got_section(symtab, layout); | |
2e702c99 | 2829 | if (gsym->final_value_is_known()) |
8c2bf391 DM |
2830 | { |
2831 | // For a STT_GNU_IFUNC symbol we want the PLT address. | |
2832 | if (gsym->type() == elfcpp::STT_GNU_IFUNC) | |
2833 | got->add_global_plt(gsym, GOT_TYPE_STANDARD); | |
2834 | else | |
2835 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
2836 | } | |
2e702c99 RM |
2837 | else |
2838 | { | |
2839 | // If this symbol is not fully resolved, we need to add a | |
2840 | // GOT entry with a dynamic relocation. | |
8c2bf391 DM |
2841 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
2842 | ||
2843 | // Use a GLOB_DAT rather than a RELATIVE reloc if: | |
2844 | // | |
2845 | // 1) The symbol may be defined in some other module. | |
2846 | // | |
2847 | // 2) We are building a shared library and this is a | |
2848 | // protected symbol; using GLOB_DAT means that the dynamic | |
2849 | // linker can use the address of the PLT in the main | |
2850 | // executable when appropriate so that function address | |
2851 | // comparisons work. | |
2852 | // | |
2853 | // 3) This is a STT_GNU_IFUNC symbol in position dependent | |
2854 | // code, again so that function address comparisons work. | |
2e702c99 RM |
2855 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
2856 | if (gsym->is_from_dynobj() | |
2857 | || gsym->is_undefined() | |
2858 | || gsym->is_preemptible() | |
8c2bf391 DM |
2859 | || (gsym->visibility() == elfcpp::STV_PROTECTED |
2860 | && parameters->options().shared()) | |
2861 | || (gsym->type() == elfcpp::STT_GNU_IFUNC | |
2862 | && parameters->options().output_is_position_independent() | |
2863 | && !gsym->is_forced_local())) | |
2864 | { | |
2865 | unsigned int r_type = elfcpp::R_SPARC_GLOB_DAT; | |
2866 | ||
2867 | // If this symbol is forced local, this relocation will | |
2868 | // not work properly. That's because ld.so on sparc | |
2869 | // (and 32-bit powerpc) expects st_value in the r_addend | |
2870 | // of relocations for STB_LOCAL symbols. Curiously the | |
2871 | // BFD linker does not promote global hidden symbols to be | |
2872 | // STB_LOCAL in the dynamic symbol table like Gold does. | |
2873 | gold_assert(!gsym->is_forced_local()); | |
2874 | got->add_global_with_rel(gsym, GOT_TYPE_STANDARD, rela_dyn, | |
2875 | r_type); | |
2876 | } | |
2e702c99 RM |
2877 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) |
2878 | { | |
f5314dd5 DM |
2879 | unsigned int off = got->add_constant(0); |
2880 | ||
2881 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
8c2bf391 DM |
2882 | if (is_ifunc) |
2883 | { | |
2884 | // Tell the dynamic linker to use the PLT address | |
2885 | // when resolving relocations. | |
2886 | if (gsym->is_from_dynobj() | |
2887 | && !parameters->options().shared()) | |
2888 | gsym->set_needs_dynsym_value(); | |
2889 | } | |
f5314dd5 | 2890 | rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE, |
8c2bf391 | 2891 | got, off, 0, is_ifunc); |
f5314dd5 | 2892 | } |
2e702c99 | 2893 | } |
f5314dd5 DM |
2894 | } |
2895 | break; | |
2896 | ||
2897 | // These are initial tls relocs, which are expected when | |
2898 | // linking. | |
2899 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2900 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2901 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2902 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2903 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
2904 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2905 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2906 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2907 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2908 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2909 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2910 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2911 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2912 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2913 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2914 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2915 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 2916 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
2917 | { |
2918 | const bool is_final = gsym->final_value_is_known(); | |
2919 | const tls::Tls_optimization optimized_type | |
2e702c99 | 2920 | = optimize_tls_reloc(is_final, r_type); |
f5314dd5 DM |
2921 | switch (r_type) |
2922 | { | |
2923 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2924 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2925 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2926 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2927 | if (optimized_type == tls::TLSOPT_NONE) | |
2928 | { | |
2e702c99 RM |
2929 | // Create a pair of GOT entries for the module index and |
2930 | // dtv-relative offset. | |
2931 | Output_data_got<size, big_endian>* got | |
2932 | = target->got_section(symtab, layout); | |
2933 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLS_PAIR, | |
83896202 ILT |
2934 | target->rela_dyn_section(layout), |
2935 | (size == 64 | |
2936 | ? elfcpp::R_SPARC_TLS_DTPMOD64 | |
2937 | : elfcpp::R_SPARC_TLS_DTPMOD32), | |
2938 | (size == 64 | |
2939 | ? elfcpp::R_SPARC_TLS_DTPOFF64 | |
2940 | : elfcpp::R_SPARC_TLS_DTPOFF32)); | |
f5314dd5 DM |
2941 | |
2942 | // Emit R_SPARC_WPLT30 against "__tls_get_addr" | |
2943 | if (r_type == elfcpp::R_SPARC_TLS_GD_CALL) | |
2944 | generate_tls_call(symtab, layout, target); | |
2945 | } | |
2946 | else if (optimized_type == tls::TLSOPT_TO_IE) | |
2947 | { | |
2e702c99 RM |
2948 | // Create a GOT entry for the tp-relative offset. |
2949 | Output_data_got<size, big_endian>* got | |
2950 | = target->got_section(symtab, layout); | |
2951 | got->add_global_with_rel(gsym, GOT_TYPE_TLS_OFFSET, | |
83896202 ILT |
2952 | target->rela_dyn_section(layout), |
2953 | (size == 64 ? | |
2954 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
2955 | elfcpp::R_SPARC_TLS_TPOFF32)); | |
f5314dd5 DM |
2956 | } |
2957 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2958 | unsupported_reloc_global(object, r_type, gsym); | |
2959 | break; | |
2960 | ||
2961 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
2962 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2963 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2964 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2965 | if (optimized_type == tls::TLSOPT_NONE) | |
2966 | { | |
2967 | // Create a GOT entry for the module index. | |
2968 | target->got_mod_index_entry(symtab, layout, object); | |
2969 | ||
2970 | if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL) | |
2971 | generate_tls_call(symtab, layout, target); | |
2972 | } | |
2973 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2974 | unsupported_reloc_global(object, r_type, gsym); | |
2975 | break; | |
2976 | ||
2977 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2978 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2979 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2980 | break; | |
2981 | ||
2982 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2983 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2984 | layout->set_has_static_tls(); | |
2985 | if (parameters->options().shared()) | |
2986 | { | |
2987 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
0da6fa6c DM |
2988 | rela_dyn->add_symbolless_global_addend(gsym, orig_r_type, |
2989 | output_section, object, | |
2990 | data_shndx, reloc.get_r_offset(), | |
2991 | 0); | |
f5314dd5 DM |
2992 | } |
2993 | break; | |
2994 | ||
2995 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2996 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2997 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2998 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 2999 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
3000 | layout->set_has_static_tls(); |
3001 | if (optimized_type == tls::TLSOPT_NONE) | |
3002 | { | |
3003 | // Create a GOT entry for the tp-relative offset. | |
3004 | Output_data_got<size, big_endian>* got | |
3005 | = target->got_section(symtab, layout); | |
83896202 ILT |
3006 | got->add_global_with_rel(gsym, GOT_TYPE_TLS_OFFSET, |
3007 | target->rela_dyn_section(layout), | |
3008 | (size == 64 | |
3009 | ? elfcpp::R_SPARC_TLS_TPOFF64 | |
3010 | : elfcpp::R_SPARC_TLS_TPOFF32)); | |
f5314dd5 DM |
3011 | } |
3012 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
3013 | unsupported_reloc_global(object, r_type, gsym); | |
3014 | break; | |
3015 | } | |
3016 | } | |
3017 | break; | |
3018 | ||
3019 | // These are relocations which should only be seen by the | |
3020 | // dynamic linker, and should never be seen here. | |
3021 | case elfcpp::R_SPARC_COPY: | |
3022 | case elfcpp::R_SPARC_GLOB_DAT: | |
3023 | case elfcpp::R_SPARC_JMP_SLOT: | |
8c2bf391 | 3024 | case elfcpp::R_SPARC_JMP_IREL: |
f5314dd5 | 3025 | case elfcpp::R_SPARC_RELATIVE: |
8c2bf391 | 3026 | case elfcpp::R_SPARC_IRELATIVE: |
f5314dd5 DM |
3027 | case elfcpp::R_SPARC_TLS_DTPMOD64: |
3028 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
3029 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
3030 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
3031 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
3032 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
3033 | gold_error(_("%s: unexpected reloc %u in object file"), | |
3034 | object->name().c_str(), r_type); | |
3035 | break; | |
3036 | ||
3037 | default: | |
3038 | unsupported_reloc_global(object, r_type, gsym); | |
3039 | break; | |
3040 | } | |
3041 | } | |
3042 | ||
dc1c8a16 CC |
3043 | // Make a new symbol table entry. |
3044 | // STT_SPARC_REGISTER symbols require special handling, | |
3045 | // so we intercept these symbols and keep track of them separately. | |
3046 | // We will resolve register symbols here and output them at symbol | |
3047 | // finalization time. | |
3048 | ||
3049 | template<int size, bool big_endian> | |
3050 | Sized_symbol<size>* | |
3051 | Target_sparc<size, big_endian>::make_symbol(const char* name, | |
3052 | elfcpp::STT type, | |
3053 | Object* object, | |
3054 | unsigned int shndx, | |
3055 | uint64_t value) | |
3056 | { | |
3057 | // REGISTER symbols are used only on SPARC-64. | |
3058 | if (size == 64 && type == elfcpp::STT_SPARC_REGISTER) | |
3059 | { | |
3060 | // Ignore REGISTER symbols in dynamic objects. | |
3061 | if (object->is_dynamic()) | |
3062 | return NULL; | |
3063 | // Only registers 2, 3, 6, and 7 can be declared global. | |
3064 | int reg = value; | |
3065 | switch (reg) | |
3066 | { | |
3067 | case 2: case 3: | |
3068 | reg -= 2; | |
3069 | break; | |
3070 | case 6: case 7: | |
3071 | reg -= 4; | |
3072 | break; | |
3073 | default: | |
3074 | gold_error(_("%s: only registers %%g[2367] can be declared " | |
3075 | "using STT_REGISTER"), | |
3076 | object->name().c_str()); | |
3077 | return NULL; | |
3078 | } | |
3079 | Register_symbol& rsym = this->register_syms_[reg]; | |
3080 | if (rsym.name == NULL) | |
3081 | { | |
3082 | rsym.name = name; | |
3083 | rsym.shndx = shndx; | |
3084 | rsym.obj = object; | |
3085 | } | |
3086 | else | |
3087 | { | |
3088 | if (strcmp(rsym.name, name) != 0) | |
3089 | { | |
3090 | gold_error(_("%s: register %%g%d declared as '%s'; " | |
3091 | "previously declared as '%s' in %s"), | |
3092 | object->name().c_str(), | |
3093 | static_cast<int>(value), | |
3094 | *name ? name : "#scratch", | |
3095 | *rsym.name ? rsym.name : "#scratch", | |
3096 | rsym.obj->name().c_str()); | |
3097 | return NULL; | |
3098 | } | |
3099 | } | |
3100 | return NULL; | |
3101 | } | |
3102 | return new Sized_symbol<size>(); | |
3103 | } | |
3104 | ||
6d03d481 ST |
3105 | // Process relocations for gc. |
3106 | ||
3107 | template<int size, bool big_endian> | |
3108 | void | |
3109 | Target_sparc<size, big_endian>::gc_process_relocs( | |
6d03d481 ST |
3110 | Symbol_table* symtab, |
3111 | Layout* layout, | |
6fa2a40b | 3112 | Sized_relobj_file<size, big_endian>* object, |
6d03d481 ST |
3113 | unsigned int data_shndx, |
3114 | unsigned int, | |
3115 | const unsigned char* prelocs, | |
3116 | size_t reloc_count, | |
3117 | Output_section* output_section, | |
3118 | bool needs_special_offset_handling, | |
3119 | size_t local_symbol_count, | |
3120 | const unsigned char* plocal_symbols) | |
3121 | { | |
3122 | typedef Target_sparc<size, big_endian> Sparc; | |
2ea97941 | 3123 | typedef typename Target_sparc<size, big_endian>::Scan Scan; |
4d625b70 CC |
3124 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
3125 | Classify_reloc; | |
6d03d481 | 3126 | |
4d625b70 | 3127 | gold::gc_process_relocs<size, big_endian, Sparc, Scan, Classify_reloc>( |
6d03d481 ST |
3128 | symtab, |
3129 | layout, | |
3130 | this, | |
3131 | object, | |
3132 | data_shndx, | |
3133 | prelocs, | |
3134 | reloc_count, | |
3135 | output_section, | |
3136 | needs_special_offset_handling, | |
3137 | local_symbol_count, | |
3138 | plocal_symbols); | |
3139 | } | |
3140 | ||
f5314dd5 DM |
3141 | // Scan relocations for a section. |
3142 | ||
3143 | template<int size, bool big_endian> | |
3144 | void | |
3145 | Target_sparc<size, big_endian>::scan_relocs( | |
f5314dd5 DM |
3146 | Symbol_table* symtab, |
3147 | Layout* layout, | |
6fa2a40b | 3148 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
3149 | unsigned int data_shndx, |
3150 | unsigned int sh_type, | |
3151 | const unsigned char* prelocs, | |
3152 | size_t reloc_count, | |
3153 | Output_section* output_section, | |
3154 | bool needs_special_offset_handling, | |
3155 | size_t local_symbol_count, | |
3156 | const unsigned char* plocal_symbols) | |
3157 | { | |
3158 | typedef Target_sparc<size, big_endian> Sparc; | |
4d625b70 CC |
3159 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
3160 | Classify_reloc; | |
f5314dd5 DM |
3161 | |
3162 | if (sh_type == elfcpp::SHT_REL) | |
3163 | { | |
3164 | gold_error(_("%s: unsupported REL reloc section"), | |
3165 | object->name().c_str()); | |
3166 | return; | |
3167 | } | |
3168 | ||
4d625b70 | 3169 | gold::scan_relocs<size, big_endian, Sparc, Scan, Classify_reloc>( |
f5314dd5 DM |
3170 | symtab, |
3171 | layout, | |
3172 | this, | |
3173 | object, | |
3174 | data_shndx, | |
3175 | prelocs, | |
3176 | reloc_count, | |
3177 | output_section, | |
3178 | needs_special_offset_handling, | |
3179 | local_symbol_count, | |
3180 | plocal_symbols); | |
3181 | } | |
3182 | ||
3183 | // Finalize the sections. | |
3184 | ||
3185 | template<int size, bool big_endian> | |
3186 | void | |
d5b40221 DK |
3187 | Target_sparc<size, big_endian>::do_finalize_sections( |
3188 | Layout* layout, | |
f59f41f3 | 3189 | const Input_objects*, |
8c2bf391 | 3190 | Symbol_table* symtab) |
f5314dd5 | 3191 | { |
8c2bf391 DM |
3192 | if (this->plt_) |
3193 | this->plt_->emit_pending_ifunc_relocs(); | |
3194 | ||
f5314dd5 | 3195 | // Fill in some more dynamic tags. |
ea715a34 ILT |
3196 | const Reloc_section* rel_plt = (this->plt_ == NULL |
3197 | ? NULL | |
3198 | : this->plt_->rel_plt()); | |
3199 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
612a8d3d | 3200 | this->rela_dyn_, true, true); |
f5314dd5 DM |
3201 | |
3202 | // Emit any relocs we saved in an attempt to avoid generating COPY | |
3203 | // relocs. | |
12c0daef ILT |
3204 | if (this->copy_relocs_.any_saved_relocs()) |
3205 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
8c2bf391 DM |
3206 | |
3207 | if (parameters->doing_static_link() | |
3208 | && (this->plt_ == NULL || !this->plt_->has_ifunc_section())) | |
3209 | { | |
3210 | // If linking statically, make sure that the __rela_iplt symbols | |
3211 | // were defined if necessary, even if we didn't create a PLT. | |
3212 | static const Define_symbol_in_segment syms[] = | |
3213 | { | |
3214 | { | |
3215 | "__rela_iplt_start", // name | |
3216 | elfcpp::PT_LOAD, // segment_type | |
3217 | elfcpp::PF_W, // segment_flags_set | |
3218 | elfcpp::PF(0), // segment_flags_clear | |
3219 | 0, // value | |
3220 | 0, // size | |
3221 | elfcpp::STT_NOTYPE, // type | |
3222 | elfcpp::STB_GLOBAL, // binding | |
3223 | elfcpp::STV_HIDDEN, // visibility | |
3224 | 0, // nonvis | |
3225 | Symbol::SEGMENT_START, // offset_from_base | |
3226 | true // only_if_ref | |
3227 | }, | |
3228 | { | |
3229 | "__rela_iplt_end", // name | |
3230 | elfcpp::PT_LOAD, // segment_type | |
3231 | elfcpp::PF_W, // segment_flags_set | |
3232 | elfcpp::PF(0), // segment_flags_clear | |
3233 | 0, // value | |
3234 | 0, // size | |
3235 | elfcpp::STT_NOTYPE, // type | |
3236 | elfcpp::STB_GLOBAL, // binding | |
3237 | elfcpp::STV_HIDDEN, // visibility | |
3238 | 0, // nonvis | |
3239 | Symbol::SEGMENT_START, // offset_from_base | |
3240 | true // only_if_ref | |
3241 | } | |
3242 | }; | |
3243 | ||
3244 | symtab->define_symbols(layout, 2, syms, | |
3245 | layout->script_options()->saw_sections_clause()); | |
3246 | } | |
dc1c8a16 CC |
3247 | |
3248 | for (int reg = 0; reg < 4; ++reg) | |
3249 | { | |
3250 | Register_symbol& rsym = this->register_syms_[reg]; | |
3251 | if (rsym.name != NULL) | |
3252 | { | |
3253 | int value = reg < 3 ? reg + 2 : reg + 4; | |
3254 | Sized_symbol<size>* sym = new Sized_symbol<size>(); | |
3255 | if (rsym.shndx == elfcpp::SHN_UNDEF) | |
3256 | sym->init_undefined(rsym.name, NULL, value, | |
3257 | elfcpp::STT_SPARC_REGISTER, elfcpp::STB_GLOBAL, | |
3258 | elfcpp::STV_DEFAULT, 0); | |
3259 | else | |
3260 | sym->init_constant(rsym.name, NULL, value, 0, | |
3261 | elfcpp::STT_SPARC_REGISTER, elfcpp::STB_GLOBAL, | |
3262 | elfcpp::STV_DEFAULT, 0, false); | |
3263 | symtab->add_target_global_symbol(sym); | |
3264 | layout->add_target_specific_dynamic_tag(elfcpp::DT_SPARC_REGISTER, | |
3265 | value); | |
3266 | } | |
3267 | } | |
f5314dd5 DM |
3268 | } |
3269 | ||
3270 | // Perform a relocation. | |
3271 | ||
3272 | template<int size, bool big_endian> | |
3273 | inline bool | |
3274 | Target_sparc<size, big_endian>::Relocate::relocate( | |
3275 | const Relocate_info<size, big_endian>* relinfo, | |
91a65d2f | 3276 | unsigned int, |
f5314dd5 | 3277 | Target_sparc* target, |
031cdbed | 3278 | Output_section*, |
f5314dd5 | 3279 | size_t relnum, |
91a65d2f | 3280 | const unsigned char* preloc, |
f5314dd5 DM |
3281 | const Sized_symbol<size>* gsym, |
3282 | const Symbol_value<size>* psymval, | |
3283 | unsigned char* view, | |
3284 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
3285 | section_size_type view_size) | |
3286 | { | |
91a65d2f AM |
3287 | const elfcpp::Rela<size, big_endian> rela(preloc); |
3288 | unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info()); | |
2a1079e8 | 3289 | bool orig_is_ifunc = psymval->is_ifunc_symbol(); |
f5314dd5 DM |
3290 | r_type &= 0xff; |
3291 | ||
3292 | if (this->ignore_gd_add_) | |
3293 | { | |
3294 | if (r_type != elfcpp::R_SPARC_TLS_GD_ADD) | |
3295 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
3296 | _("missing expected TLS relocation")); | |
3297 | else | |
3298 | { | |
3299 | this->ignore_gd_add_ = false; | |
3300 | return false; | |
3301 | } | |
3302 | } | |
0e804863 ILT |
3303 | |
3304 | if (view == NULL) | |
3305 | return true; | |
3306 | ||
abd242a9 DM |
3307 | if (this->reloc_adjust_addr_ == view) |
3308 | view -= 4; | |
f5314dd5 DM |
3309 | |
3310 | typedef Sparc_relocate_functions<size, big_endian> Reloc; | |
8c2bf391 | 3311 | const Sized_relobj_file<size, big_endian>* object = relinfo->object; |
f5314dd5 DM |
3312 | |
3313 | // Pick the value to use for symbols defined in shared objects. | |
3314 | Symbol_value<size> symval; | |
3315 | if (gsym != NULL | |
95a2c8d6 | 3316 | && gsym->use_plt_offset(Scan::get_reference_flags(r_type))) |
f5314dd5 | 3317 | { |
2ea97941 | 3318 | elfcpp::Elf_Xword value; |
f5314dd5 | 3319 | |
19fec8c1 | 3320 | value = target->plt_address_for_global(gsym); |
f5314dd5 | 3321 | |
2ea97941 | 3322 | symval.set_output_value(value); |
f5314dd5 DM |
3323 | |
3324 | psymval = &symval; | |
3325 | } | |
2a1079e8 | 3326 | else if (gsym == NULL && orig_is_ifunc) |
8c2bf391 DM |
3327 | { |
3328 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
3329 | if (object->local_has_plt_offset(r_sym)) | |
3330 | { | |
19fec8c1 | 3331 | symval.set_output_value(target->plt_address_for_local(object, r_sym)); |
8c2bf391 DM |
3332 | psymval = &symval; |
3333 | } | |
3334 | } | |
f5314dd5 | 3335 | |
f5314dd5 DM |
3336 | const elfcpp::Elf_Xword addend = rela.get_r_addend(); |
3337 | ||
3338 | // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT | |
3339 | // pointer points to the beginning, not the end, of the table. | |
3340 | // So we just use the plain offset. | |
f5314dd5 | 3341 | unsigned int got_offset = 0; |
2a1079e8 | 3342 | bool gdop_valid = false; |
f5314dd5 DM |
3343 | switch (r_type) |
3344 | { | |
024c4466 DM |
3345 | case elfcpp::R_SPARC_GOTDATA_OP: |
3346 | case elfcpp::R_SPARC_GOTDATA_OP_HIX22: | |
3347 | case elfcpp::R_SPARC_GOTDATA_OP_LOX10: | |
2a1079e8 DM |
3348 | // If this is local, we did not create a GOT entry because we |
3349 | // intend to transform this into a GOT relative relocation. | |
3350 | if (gsym == NULL | |
3351 | || (gsym->is_defined() | |
3352 | && !gsym->is_from_dynobj() | |
3353 | && !gsym->is_preemptible() | |
3354 | && !orig_is_ifunc)) | |
3355 | { | |
9eacb935 | 3356 | got_offset = psymval->value(object, addend) - target->got_address(); |
2a1079e8 DM |
3357 | gdop_valid = true; |
3358 | break; | |
3359 | } | |
d8e90251 | 3360 | // Fall through. |
f5314dd5 DM |
3361 | case elfcpp::R_SPARC_GOT10: |
3362 | case elfcpp::R_SPARC_GOT13: | |
3363 | case elfcpp::R_SPARC_GOT22: | |
3364 | if (gsym != NULL) | |
2e702c99 RM |
3365 | { |
3366 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
3367 | got_offset = gsym->got_offset(GOT_TYPE_STANDARD); | |
3368 | } | |
f5314dd5 | 3369 | else |
2e702c99 RM |
3370 | { |
3371 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
3372 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); | |
3373 | got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
3374 | } | |
f5314dd5 DM |
3375 | break; |
3376 | ||
3377 | default: | |
3378 | break; | |
3379 | } | |
3380 | ||
3381 | switch (r_type) | |
3382 | { | |
3383 | case elfcpp::R_SPARC_NONE: | |
3384 | case elfcpp::R_SPARC_REGISTER: | |
3385 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
3386 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
3387 | break; | |
3388 | ||
3389 | case elfcpp::R_SPARC_8: | |
3390 | Relocate_functions<size, big_endian>::rela8(view, object, | |
3391 | psymval, addend); | |
3392 | break; | |
3393 | ||
3394 | case elfcpp::R_SPARC_16: | |
705b5121 DM |
3395 | if (rela.get_r_offset() & 0x1) |
3396 | { | |
3397 | // The assembler can sometimes emit unaligned relocations | |
2e702c99 | 3398 | // for dwarf2 cfi directives. |
705b5121 DM |
3399 | Reloc::ua16(view, object, psymval, addend); |
3400 | } | |
3401 | else | |
3402 | Relocate_functions<size, big_endian>::rela16(view, object, | |
3403 | psymval, addend); | |
f5314dd5 DM |
3404 | break; |
3405 | ||
3406 | case elfcpp::R_SPARC_32: | |
3407 | if (!parameters->options().output_is_position_independent()) | |
705b5121 DM |
3408 | { |
3409 | if (rela.get_r_offset() & 0x3) | |
3410 | { | |
3411 | // The assembler can sometimes emit unaligned relocations | |
2e702c99 | 3412 | // for dwarf2 cfi directives. |
705b5121 DM |
3413 | Reloc::ua32(view, object, psymval, addend); |
3414 | } | |
3415 | else | |
3416 | Relocate_functions<size, big_endian>::rela32(view, object, | |
3417 | psymval, addend); | |
3418 | } | |
f5314dd5 DM |
3419 | break; |
3420 | ||
3421 | case elfcpp::R_SPARC_DISP8: | |
3422 | Reloc::disp8(view, object, psymval, addend, address); | |
3423 | break; | |
3424 | ||
3425 | case elfcpp::R_SPARC_DISP16: | |
3426 | Reloc::disp16(view, object, psymval, addend, address); | |
3427 | break; | |
3428 | ||
3429 | case elfcpp::R_SPARC_DISP32: | |
3430 | Reloc::disp32(view, object, psymval, addend, address); | |
3431 | break; | |
3432 | ||
3433 | case elfcpp::R_SPARC_DISP64: | |
3434 | Reloc::disp64(view, object, psymval, addend, address); | |
3435 | break; | |
3436 | ||
3437 | case elfcpp::R_SPARC_WDISP30: | |
3438 | case elfcpp::R_SPARC_WPLT30: | |
3439 | Reloc::wdisp30(view, object, psymval, addend, address); | |
a5a5f7a3 DM |
3440 | if (target->may_relax()) |
3441 | relax_call(target, view, rela, view_size); | |
f5314dd5 DM |
3442 | break; |
3443 | ||
3444 | case elfcpp::R_SPARC_WDISP22: | |
3445 | Reloc::wdisp22(view, object, psymval, addend, address); | |
3446 | break; | |
3447 | ||
3448 | case elfcpp::R_SPARC_WDISP19: | |
3449 | Reloc::wdisp19(view, object, psymval, addend, address); | |
3450 | break; | |
3451 | ||
3452 | case elfcpp::R_SPARC_WDISP16: | |
3453 | Reloc::wdisp16(view, object, psymval, addend, address); | |
3454 | break; | |
3455 | ||
2615994e DM |
3456 | case elfcpp::R_SPARC_WDISP10: |
3457 | Reloc::wdisp10(view, object, psymval, addend, address); | |
3458 | break; | |
3459 | ||
f5314dd5 DM |
3460 | case elfcpp::R_SPARC_HI22: |
3461 | Reloc::hi22(view, object, psymval, addend); | |
3462 | break; | |
3463 | ||
3464 | case elfcpp::R_SPARC_22: | |
3465 | Reloc::rela32_22(view, object, psymval, addend); | |
3466 | break; | |
3467 | ||
3468 | case elfcpp::R_SPARC_13: | |
3469 | Reloc::rela32_13(view, object, psymval, addend); | |
3470 | break; | |
3471 | ||
3472 | case elfcpp::R_SPARC_LO10: | |
3473 | Reloc::lo10(view, object, psymval, addend); | |
3474 | break; | |
3475 | ||
007801ee JC |
3476 | case elfcpp::R_SPARC_GOTDATA_OP_LOX10: |
3477 | if (gdop_valid) | |
3478 | { | |
3479 | Reloc::gdop_lox10(view, got_offset); | |
3480 | break; | |
3481 | } | |
d8e90251 | 3482 | // Fall through. |
f5314dd5 DM |
3483 | case elfcpp::R_SPARC_GOT10: |
3484 | Reloc::lo10(view, got_offset, addend); | |
3485 | break; | |
3486 | ||
024c4466 | 3487 | case elfcpp::R_SPARC_GOTDATA_OP: |
2a1079e8 DM |
3488 | if (gdop_valid) |
3489 | { | |
3490 | typedef typename elfcpp::Swap<32, true>::Valtype Insntype; | |
3491 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
3492 | Insntype val; | |
3493 | ||
3494 | // {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd | |
3495 | val = elfcpp::Swap<32, true>::readval(wv); | |
3496 | val = 0x80000000 | (val & 0x3e07c01f); | |
3497 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3498 | } | |
024c4466 DM |
3499 | break; |
3500 | ||
f5314dd5 DM |
3501 | case elfcpp::R_SPARC_GOT13: |
3502 | Reloc::rela32_13(view, got_offset, addend); | |
3503 | break; | |
3504 | ||
024c4466 | 3505 | case elfcpp::R_SPARC_GOTDATA_OP_HIX22: |
2a1079e8 DM |
3506 | if (gdop_valid) |
3507 | { | |
9eacb935 | 3508 | Reloc::gdop_hix22(view, got_offset); |
2a1079e8 DM |
3509 | break; |
3510 | } | |
d8e90251 | 3511 | // Fall through. |
f5314dd5 DM |
3512 | case elfcpp::R_SPARC_GOT22: |
3513 | Reloc::hi22(view, got_offset, addend); | |
3514 | break; | |
3515 | ||
3516 | case elfcpp::R_SPARC_PC10: | |
3517 | Reloc::pc10(view, object, psymval, addend, address); | |
3518 | break; | |
3519 | ||
3520 | case elfcpp::R_SPARC_PC22: | |
3521 | Reloc::pc22(view, object, psymval, addend, address); | |
3522 | break; | |
3523 | ||
3524 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
3525 | case elfcpp::R_SPARC_UA32: | |
3526 | Reloc::ua32(view, object, psymval, addend); | |
3527 | break; | |
3528 | ||
3529 | case elfcpp::R_SPARC_PLT64: | |
3530 | Relocate_functions<size, big_endian>::rela64(view, object, | |
3531 | psymval, addend); | |
3532 | break; | |
3533 | ||
3534 | case elfcpp::R_SPARC_PLT32: | |
3535 | Relocate_functions<size, big_endian>::rela32(view, object, | |
3536 | psymval, addend); | |
3537 | break; | |
3538 | ||
3539 | case elfcpp::R_SPARC_HIPLT22: | |
3540 | Reloc::hi22(view, object, psymval, addend); | |
3541 | break; | |
3542 | ||
3543 | case elfcpp::R_SPARC_LOPLT10: | |
3544 | Reloc::lo10(view, object, psymval, addend); | |
3545 | break; | |
3546 | ||
3547 | case elfcpp::R_SPARC_PCPLT32: | |
3548 | Reloc::disp32(view, object, psymval, addend, address); | |
3549 | break; | |
3550 | ||
3551 | case elfcpp::R_SPARC_PCPLT22: | |
3552 | Reloc::pcplt22(view, object, psymval, addend, address); | |
3553 | break; | |
3554 | ||
3555 | case elfcpp::R_SPARC_PCPLT10: | |
3556 | Reloc::lo10(view, object, psymval, addend, address); | |
3557 | break; | |
3558 | ||
3559 | case elfcpp::R_SPARC_64: | |
3560 | if (!parameters->options().output_is_position_independent()) | |
705b5121 DM |
3561 | { |
3562 | if (rela.get_r_offset() & 0x7) | |
3563 | { | |
3564 | // The assembler can sometimes emit unaligned relocations | |
2e702c99 | 3565 | // for dwarf2 cfi directives. |
705b5121 DM |
3566 | Reloc::ua64(view, object, psymval, addend); |
3567 | } | |
3568 | else | |
3569 | Relocate_functions<size, big_endian>::rela64(view, object, | |
3570 | psymval, addend); | |
3571 | } | |
f5314dd5 DM |
3572 | break; |
3573 | ||
3574 | case elfcpp::R_SPARC_OLO10: | |
3575 | { | |
3576 | unsigned int addend2 = rela.get_r_info() & 0xffffffff; | |
3577 | addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000; | |
3578 | Reloc::olo10(view, object, psymval, addend, addend2); | |
3579 | } | |
3580 | break; | |
3581 | ||
3582 | case elfcpp::R_SPARC_HH22: | |
3583 | Reloc::hh22(view, object, psymval, addend); | |
3584 | break; | |
3585 | ||
3586 | case elfcpp::R_SPARC_PC_HH22: | |
3587 | Reloc::pc_hh22(view, object, psymval, addend, address); | |
3588 | break; | |
3589 | ||
3590 | case elfcpp::R_SPARC_HM10: | |
3591 | Reloc::hm10(view, object, psymval, addend); | |
3592 | break; | |
3593 | ||
3594 | case elfcpp::R_SPARC_PC_HM10: | |
3595 | Reloc::pc_hm10(view, object, psymval, addend, address); | |
3596 | break; | |
3597 | ||
3598 | case elfcpp::R_SPARC_LM22: | |
3599 | Reloc::hi22(view, object, psymval, addend); | |
3600 | break; | |
3601 | ||
3602 | case elfcpp::R_SPARC_PC_LM22: | |
3603 | Reloc::pcplt22(view, object, psymval, addend, address); | |
3604 | break; | |
3605 | ||
3606 | case elfcpp::R_SPARC_11: | |
3607 | Reloc::rela32_11(view, object, psymval, addend); | |
3608 | break; | |
3609 | ||
3610 | case elfcpp::R_SPARC_10: | |
3611 | Reloc::rela32_10(view, object, psymval, addend); | |
3612 | break; | |
3613 | ||
3614 | case elfcpp::R_SPARC_7: | |
3615 | Reloc::rela32_7(view, object, psymval, addend); | |
3616 | break; | |
3617 | ||
3618 | case elfcpp::R_SPARC_6: | |
3619 | Reloc::rela32_6(view, object, psymval, addend); | |
3620 | break; | |
3621 | ||
3622 | case elfcpp::R_SPARC_5: | |
3623 | Reloc::rela32_5(view, object, psymval, addend); | |
3624 | break; | |
3625 | ||
3626 | case elfcpp::R_SPARC_HIX22: | |
3627 | Reloc::hix22(view, object, psymval, addend); | |
3628 | break; | |
3629 | ||
3630 | case elfcpp::R_SPARC_LOX10: | |
3631 | Reloc::lox10(view, object, psymval, addend); | |
3632 | break; | |
3633 | ||
2615994e DM |
3634 | case elfcpp::R_SPARC_H34: |
3635 | Reloc::h34(view, object, psymval, addend); | |
3636 | break; | |
3637 | ||
f5314dd5 DM |
3638 | case elfcpp::R_SPARC_H44: |
3639 | Reloc::h44(view, object, psymval, addend); | |
3640 | break; | |
3641 | ||
3642 | case elfcpp::R_SPARC_M44: | |
3643 | Reloc::m44(view, object, psymval, addend); | |
3644 | break; | |
3645 | ||
3646 | case elfcpp::R_SPARC_L44: | |
3647 | Reloc::l44(view, object, psymval, addend); | |
3648 | break; | |
3649 | ||
3650 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
3651 | case elfcpp::R_SPARC_UA64: | |
3652 | Reloc::ua64(view, object, psymval, addend); | |
3653 | break; | |
3654 | ||
3655 | case elfcpp::R_SPARC_UA16: | |
3656 | Reloc::ua16(view, object, psymval, addend); | |
3657 | break; | |
3658 | ||
3659 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
3660 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
3661 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
3662 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
3663 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
3664 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
3665 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
3666 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
3667 | case elfcpp::R_SPARC_TLS_LDO_HIX22: | |
3668 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
3669 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
3670 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
3671 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
3672 | case elfcpp::R_SPARC_TLS_IE_LD: | |
3673 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 3674 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
3675 | case elfcpp::R_SPARC_TLS_LE_HIX22: |
3676 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
3677 | this->relocate_tls(relinfo, target, relnum, rela, | |
3678 | r_type, gsym, psymval, view, | |
3679 | address, view_size); | |
3680 | break; | |
3681 | ||
3682 | case elfcpp::R_SPARC_COPY: | |
3683 | case elfcpp::R_SPARC_GLOB_DAT: | |
3684 | case elfcpp::R_SPARC_JMP_SLOT: | |
8c2bf391 | 3685 | case elfcpp::R_SPARC_JMP_IREL: |
f5314dd5 | 3686 | case elfcpp::R_SPARC_RELATIVE: |
8c2bf391 | 3687 | case elfcpp::R_SPARC_IRELATIVE: |
f5314dd5 DM |
3688 | // These are outstanding tls relocs, which are unexpected when |
3689 | // linking. | |
3690 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
3691 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
3692 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
3693 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
3694 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
3695 | _("unexpected reloc %u in object file"), | |
3696 | r_type); | |
3697 | break; | |
3698 | ||
3699 | default: | |
3700 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
3701 | _("unsupported reloc %u"), | |
3702 | r_type); | |
3703 | break; | |
3704 | } | |
3705 | ||
3706 | return true; | |
3707 | } | |
3708 | ||
3709 | // Perform a TLS relocation. | |
3710 | ||
3711 | template<int size, bool big_endian> | |
3712 | inline void | |
3713 | Target_sparc<size, big_endian>::Relocate::relocate_tls( | |
3714 | const Relocate_info<size, big_endian>* relinfo, | |
3715 | Target_sparc<size, big_endian>* target, | |
3716 | size_t relnum, | |
3717 | const elfcpp::Rela<size, big_endian>& rela, | |
3718 | unsigned int r_type, | |
3719 | const Sized_symbol<size>* gsym, | |
3720 | const Symbol_value<size>* psymval, | |
3721 | unsigned char* view, | |
3722 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
3723 | section_size_type) | |
3724 | { | |
3725 | Output_segment* tls_segment = relinfo->layout->tls_segment(); | |
3726 | typedef Sparc_relocate_functions<size, big_endian> Reloc; | |
6fa2a40b | 3727 | const Sized_relobj_file<size, big_endian>* object = relinfo->object; |
f5314dd5 DM |
3728 | typedef typename elfcpp::Swap<32, true>::Valtype Insntype; |
3729 | ||
3730 | const elfcpp::Elf_Xword addend = rela.get_r_addend(); | |
2ea97941 | 3731 | typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0); |
f5314dd5 DM |
3732 | |
3733 | const bool is_final = | |
3734 | (gsym == NULL | |
67f46fed | 3735 | ? !parameters->options().shared() |
f5314dd5 DM |
3736 | : gsym->final_value_is_known()); |
3737 | const tls::Tls_optimization optimized_type | |
3738 | = optimize_tls_reloc(is_final, r_type); | |
3739 | ||
3740 | switch (r_type) | |
3741 | { | |
3742 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
3743 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
3744 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
3745 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
3746 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3747 | { | |
3748 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
3749 | Insntype val; | |
3750 | ||
2ea97941 | 3751 | value -= tls_segment->memsz(); |
f5314dd5 DM |
3752 | |
3753 | switch (r_type) | |
3754 | { | |
3755 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
3756 | // TLS_GD_HI22 --> TLS_LE_HIX22 | |
2ea97941 | 3757 | Reloc::hix22(view, value, addend); |
f5314dd5 DM |
3758 | break; |
3759 | ||
3760 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
3761 | // TLS_GD_LO10 --> TLS_LE_LOX10 | |
2ea97941 | 3762 | Reloc::lox10(view, value, addend); |
f5314dd5 DM |
3763 | break; |
3764 | ||
3765 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
3766 | // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3 | |
3767 | val = elfcpp::Swap<32, true>::readval(wv); | |
3768 | val = (val & ~0x7c000) | 0x1c000; | |
3769 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3770 | break; | |
3771 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
3772 | // call __tls_get_addr --> nop | |
3773 | elfcpp::Swap<32, true>::writeval(wv, sparc_nop); | |
3774 | break; | |
3775 | } | |
3776 | break; | |
3777 | } | |
3778 | else | |
2e702c99 RM |
3779 | { |
3780 | unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE | |
3781 | ? GOT_TYPE_TLS_OFFSET | |
3782 | : GOT_TYPE_TLS_PAIR); | |
3783 | if (gsym != NULL) | |
3784 | { | |
3785 | gold_assert(gsym->has_got_offset(got_type)); | |
3786 | value = gsym->got_offset(got_type); | |
3787 | } | |
3788 | else | |
3789 | { | |
3790 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
3791 | gold_assert(object->local_has_got_offset(r_sym, got_type)); | |
3792 | value = object->local_got_offset(r_sym, got_type); | |
3793 | } | |
3794 | if (optimized_type == tls::TLSOPT_TO_IE) | |
f5314dd5 DM |
3795 | { |
3796 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
3797 | Insntype val; | |
3798 | ||
3799 | switch (r_type) | |
3800 | { | |
3801 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
3802 | // TLS_GD_HI22 --> TLS_IE_HI22 | |
2ea97941 | 3803 | Reloc::hi22(view, value, addend); |
f5314dd5 DM |
3804 | break; |
3805 | ||
3806 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
3807 | // TLS_GD_LO10 --> TLS_IE_LO10 | |
2ea97941 | 3808 | Reloc::lo10(view, value, addend); |
f5314dd5 DM |
3809 | break; |
3810 | ||
3811 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
3812 | // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3 | |
3813 | val = elfcpp::Swap<32, true>::readval(wv); | |
3814 | ||
3815 | if (size == 64) | |
3816 | val |= 0xc0580000; | |
3817 | else | |
3818 | val |= 0xc0000000; | |
3819 | ||
3820 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3821 | break; | |
3822 | ||
3823 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
3824 | // The compiler can put the TLS_GD_ADD instruction | |
3825 | // into the delay slot of the call. If so, we need | |
3826 | // to transpose the two instructions so that the | |
9b547ce6 | 3827 | // new sequence works properly. |
f5314dd5 DM |
3828 | // |
3829 | // The test we use is if the instruction in the | |
3830 | // delay slot is an add with destination register | |
3831 | // equal to %o0 | |
3832 | val = elfcpp::Swap<32, true>::readval(wv + 1); | |
3833 | if ((val & 0x81f80000) == 0x80000000 | |
3834 | && ((val >> 25) & 0x1f) == 0x8) | |
3835 | { | |
3836 | if (size == 64) | |
3837 | val |= 0xc0580000; | |
3838 | else | |
3839 | val |= 0xc0000000; | |
3840 | ||
3841 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3842 | ||
3843 | wv += 1; | |
3844 | this->ignore_gd_add_ = true; | |
3845 | } | |
abd242a9 DM |
3846 | else |
3847 | { | |
3848 | // Even if the delay slot isn't the TLS_GD_ADD | |
3849 | // instruction, we still have to handle the case | |
3850 | // where it sets up %o0 in some other way. | |
3851 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3852 | wv += 1; | |
3853 | this->reloc_adjust_addr_ = view + 4; | |
3854 | } | |
f5314dd5 DM |
3855 | // call __tls_get_addr --> add %g7, %o0, %o0 |
3856 | elfcpp::Swap<32, true>::writeval(wv, 0x9001c008); | |
3857 | break; | |
3858 | } | |
2e702c99 | 3859 | break; |
f5314dd5 | 3860 | } |
2e702c99 RM |
3861 | else if (optimized_type == tls::TLSOPT_NONE) |
3862 | { | |
f5314dd5 DM |
3863 | switch (r_type) |
3864 | { | |
3865 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2ea97941 | 3866 | Reloc::hi22(view, value, addend); |
f5314dd5 DM |
3867 | break; |
3868 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2ea97941 | 3869 | Reloc::lo10(view, value, addend); |
f5314dd5 DM |
3870 | break; |
3871 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
3872 | break; | |
3873 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
3874 | { | |
3875 | Symbol_value<size> symval; | |
2ea97941 | 3876 | elfcpp::Elf_Xword value; |
f5314dd5 DM |
3877 | Symbol* tsym; |
3878 | ||
3879 | tsym = target->tls_get_addr_sym_; | |
3880 | gold_assert(tsym); | |
2ea97941 ILT |
3881 | value = (target->plt_section()->address() + |
3882 | tsym->plt_offset()); | |
3883 | symval.set_output_value(value); | |
f5314dd5 DM |
3884 | Reloc::wdisp30(view, object, &symval, addend, address); |
3885 | } | |
3886 | break; | |
3887 | } | |
3888 | break; | |
2e702c99 RM |
3889 | } |
3890 | } | |
f5314dd5 DM |
3891 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
3892 | _("unsupported reloc %u"), | |
3893 | r_type); | |
3894 | break; | |
3895 | ||
3896 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
3897 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
3898 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
3899 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
3900 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3901 | { | |
3902 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
3903 | ||
3904 | switch (r_type) | |
3905 | { | |
3906 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
3907 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
3908 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
3909 | elfcpp::Swap<32, true>::writeval(wv, sparc_nop); | |
3910 | break; | |
3911 | ||
3912 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
3913 | elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0); | |
3914 | break; | |
3915 | } | |
3916 | break; | |
3917 | } | |
3918 | else if (optimized_type == tls::TLSOPT_NONE) | |
2e702c99 RM |
3919 | { |
3920 | // Relocate the field with the offset of the GOT entry for | |
3921 | // the module index. | |
3922 | unsigned int got_offset; | |
f5314dd5 DM |
3923 | |
3924 | got_offset = target->got_mod_index_entry(NULL, NULL, NULL); | |
3925 | switch (r_type) | |
3926 | { | |
3927 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
3928 | Reloc::hi22(view, got_offset, addend); | |
3929 | break; | |
3930 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
3931 | Reloc::lo10(view, got_offset, addend); | |
3932 | break; | |
3933 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
3934 | break; | |
3935 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
3936 | { | |
3937 | Symbol_value<size> symval; | |
2ea97941 | 3938 | elfcpp::Elf_Xword value; |
f5314dd5 DM |
3939 | Symbol* tsym; |
3940 | ||
3941 | tsym = target->tls_get_addr_sym_; | |
3942 | gold_assert(tsym); | |
2ea97941 ILT |
3943 | value = (target->plt_section()->address() + |
3944 | tsym->plt_offset()); | |
3945 | symval.set_output_value(value); | |
f5314dd5 DM |
3946 | Reloc::wdisp30(view, object, &symval, addend, address); |
3947 | } | |
3948 | break; | |
3949 | } | |
2e702c99 RM |
3950 | break; |
3951 | } | |
f5314dd5 DM |
3952 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
3953 | _("unsupported reloc %u"), | |
3954 | r_type); | |
3955 | break; | |
3956 | ||
3957 | // These relocs can appear in debugging sections, in which case | |
3958 | // we won't see the TLS_LDM relocs. The local_dynamic_type | |
3959 | // field tells us this. | |
3960 | case elfcpp::R_SPARC_TLS_LDO_HIX22: | |
3961 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3962 | { | |
2ea97941 ILT |
3963 | value -= tls_segment->memsz(); |
3964 | Reloc::hix22(view, value, addend); | |
f5314dd5 DM |
3965 | } |
3966 | else | |
2ea97941 | 3967 | Reloc::ldo_hix22(view, value, addend); |
f5314dd5 DM |
3968 | break; |
3969 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
3970 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3971 | { | |
2ea97941 ILT |
3972 | value -= tls_segment->memsz(); |
3973 | Reloc::lox10(view, value, addend); | |
f5314dd5 DM |
3974 | } |
3975 | else | |
2ea97941 | 3976 | Reloc::ldo_lox10(view, value, addend); |
f5314dd5 DM |
3977 | break; |
3978 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
3979 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3980 | { | |
3981 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
3982 | Insntype val; | |
3983 | ||
3984 | // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3 | |
3985 | val = elfcpp::Swap<32, true>::readval(wv); | |
3986 | val = (val & ~0x7c000) | 0x1c000; | |
3987 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3988 | } | |
3989 | break; | |
3990 | ||
3991 | // When optimizing IE --> LE, the only relocation that is handled | |
3992 | // differently is R_SPARC_TLS_IE_LD, it is rewritten from | |
3993 | // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is | |
3994 | // rs2 and rd are the same. | |
3995 | case elfcpp::R_SPARC_TLS_IE_LD: | |
3996 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
3997 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3998 | { | |
3999 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
4000 | Insntype val = elfcpp::Swap<32, true>::readval(wv); | |
4001 | Insntype rs2 = val & 0x1f; | |
4002 | Insntype rd = (val >> 25) & 0x1f; | |
4003 | ||
4004 | if (rs2 == rd) | |
4005 | val = sparc_nop; | |
4006 | else | |
4007 | val = sparc_mov | (val & 0x3e00001f); | |
4008 | ||
4009 | elfcpp::Swap<32, true>::writeval(wv, val); | |
4010 | } | |
4011 | break; | |
4012 | ||
4013 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
4014 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
4015 | if (optimized_type == tls::TLSOPT_TO_LE) | |
4016 | { | |
2ea97941 | 4017 | value -= tls_segment->memsz(); |
f5314dd5 DM |
4018 | switch (r_type) |
4019 | { | |
4020 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
4021 | // IE_HI22 --> LE_HIX22 | |
2ea97941 | 4022 | Reloc::hix22(view, value, addend); |
f5314dd5 DM |
4023 | break; |
4024 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
4025 | // IE_LO10 --> LE_LOX10 | |
2ea97941 | 4026 | Reloc::lox10(view, value, addend); |
f5314dd5 DM |
4027 | break; |
4028 | } | |
4029 | break; | |
4030 | } | |
4031 | else if (optimized_type == tls::TLSOPT_NONE) | |
4032 | { | |
4033 | // Relocate the field with the offset of the GOT entry for | |
4034 | // the tp-relative offset of the symbol. | |
4035 | if (gsym != NULL) | |
4036 | { | |
4037 | gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET)); | |
2ea97941 | 4038 | value = gsym->got_offset(GOT_TYPE_TLS_OFFSET); |
f5314dd5 DM |
4039 | } |
4040 | else | |
4041 | { | |
4042 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
4043 | gold_assert(object->local_has_got_offset(r_sym, | |
4044 | GOT_TYPE_TLS_OFFSET)); | |
2ea97941 ILT |
4045 | value = object->local_got_offset(r_sym, |
4046 | GOT_TYPE_TLS_OFFSET); | |
f5314dd5 DM |
4047 | } |
4048 | switch (r_type) | |
4049 | { | |
4050 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
2ea97941 | 4051 | Reloc::hi22(view, value, addend); |
f5314dd5 DM |
4052 | break; |
4053 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2ea97941 | 4054 | Reloc::lo10(view, value, addend); |
f5314dd5 DM |
4055 | break; |
4056 | } | |
4057 | break; | |
4058 | } | |
4059 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
4060 | _("unsupported reloc %u"), | |
4061 | r_type); | |
4062 | break; | |
4063 | ||
9efe6174 ILT |
4064 | case elfcpp::R_SPARC_TLS_IE_ADD: |
4065 | // This seems to be mainly so that we can find the addition | |
4066 | // instruction if there is one. There doesn't seem to be any | |
4067 | // actual relocation to apply. | |
4068 | break; | |
4069 | ||
f5314dd5 DM |
4070 | case elfcpp::R_SPARC_TLS_LE_HIX22: |
4071 | // If we're creating a shared library, a dynamic relocation will | |
4072 | // have been created for this location, so do not apply it now. | |
4073 | if (!parameters->options().shared()) | |
4074 | { | |
2ea97941 ILT |
4075 | value -= tls_segment->memsz(); |
4076 | Reloc::hix22(view, value, addend); | |
f5314dd5 DM |
4077 | } |
4078 | break; | |
4079 | ||
4080 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
4081 | // If we're creating a shared library, a dynamic relocation will | |
4082 | // have been created for this location, so do not apply it now. | |
4083 | if (!parameters->options().shared()) | |
4084 | { | |
2ea97941 ILT |
4085 | value -= tls_segment->memsz(); |
4086 | Reloc::lox10(view, value, addend); | |
f5314dd5 DM |
4087 | } |
4088 | break; | |
4089 | } | |
4090 | } | |
4091 | ||
a5a5f7a3 DM |
4092 | // Relax a call instruction. |
4093 | ||
4094 | template<int size, bool big_endian> | |
4095 | inline void | |
4096 | Target_sparc<size, big_endian>::Relocate::relax_call( | |
4097 | Target_sparc<size, big_endian>* target, | |
4098 | unsigned char* view, | |
4099 | const elfcpp::Rela<size, big_endian>& rela, | |
4100 | section_size_type view_size) | |
4101 | { | |
4102 | typedef typename elfcpp::Swap<32, true>::Valtype Insntype; | |
4103 | Insntype *wv = reinterpret_cast<Insntype*>(view); | |
4104 | Insntype call_insn, delay_insn, set_insn; | |
4105 | uint32_t op3, reg, off; | |
4106 | ||
4107 | // This code tries to relax call instructions that meet | |
4108 | // certain criteria. | |
4109 | // | |
4110 | // The first criteria is that the call must be such that the return | |
4111 | // address which the call writes into %o7 is unused. Two sequences | |
4112 | // meet this criteria, and are used to implement tail calls. | |
4113 | // | |
4114 | // Leaf function tail call: | |
4115 | // | |
4116 | // or %o7, %g0, %ANY_REG | |
4117 | // call FUNC | |
4118 | // or %ANY_REG, %g0, %o7 | |
4119 | // | |
4120 | // Non-leaf function tail call: | |
4121 | // | |
4122 | // call FUNC | |
4123 | // restore | |
4124 | // | |
4125 | // The second criteria is that the call destination is close. If | |
4126 | // the displacement can fit in a signed 22-bit immediate field of a | |
4127 | // pre-V9 branch, we can do it. If we are generating a 64-bit | |
4128 | // object or a 32-bit object with ELF machine type EF_SPARC32PLUS, | |
4129 | // and the displacement fits in a signed 19-bit immediate field, | |
4130 | // then we can use a V9 branch. | |
4131 | ||
4132 | // Make sure the delay instruction can be safely accessed. | |
4133 | if (rela.get_r_offset() + 8 > view_size) | |
4134 | return; | |
4135 | ||
4136 | call_insn = elfcpp::Swap<32, true>::readval(wv); | |
4137 | delay_insn = elfcpp::Swap<32, true>::readval(wv + 1); | |
4138 | ||
4139 | // Make sure it is really a call instruction. | |
4140 | if (((call_insn >> 30) & 0x3) != 1) | |
4141 | return; | |
4142 | ||
4143 | if (((delay_insn >> 30) & 0x3) != 2) | |
4144 | return; | |
4145 | ||
4146 | // Accept only a restore or an integer arithmetic operation whose | |
4147 | // sole side effect is to write the %o7 register (and perhaps set | |
4148 | // the condition codes, which are considered clobbered across | |
4149 | // function calls). | |
4150 | // | |
4151 | // For example, we don't want to match a tagged addition or | |
4152 | // subtraction. We also don't want to match something like a | |
4153 | // divide. | |
4154 | // | |
4155 | // Specifically we accept add{,cc}, and{,cc}, or{,cc}, | |
4156 | // xor{,cc}, sub{,cc}, andn{,cc}, orn{,cc}, and xnor{,cc}. | |
4157 | ||
4158 | op3 = (delay_insn >> 19) & 0x3f; | |
4159 | reg = (delay_insn >> 25) & 0x1f; | |
4160 | if (op3 != 0x3d | |
4161 | && ((op3 & 0x28) != 0 || reg != 15)) | |
4162 | return; | |
4163 | ||
4164 | // For non-restore instructions, make sure %o7 isn't | |
4165 | // an input. | |
4166 | if (op3 != 0x3d) | |
4167 | { | |
4168 | // First check RS1 | |
00956d3a | 4169 | reg = (delay_insn >> 14) & 0x1f; |
a5a5f7a3 DM |
4170 | if (reg == 15) |
4171 | return; | |
4172 | ||
4173 | // And if non-immediate, check RS2 | |
4174 | if (((delay_insn >> 13) & 1) == 0) | |
4175 | { | |
4176 | reg = (delay_insn & 0x1f); | |
4177 | if (reg == 15) | |
4178 | return; | |
4179 | } | |
4180 | } | |
4181 | ||
4182 | // Now check the branch distance. We are called after the | |
4183 | // call has been relocated, so we just have to peek at the | |
4184 | // offset contained in the instruction. | |
4185 | off = call_insn & 0x3fffffff; | |
4186 | if ((off & 0x3fe00000) != 0 | |
4187 | && (off & 0x3fe00000) != 0x3fe00000) | |
4188 | return; | |
4189 | ||
4190 | if ((size == 64 || target->elf_machine_ == elfcpp::EM_SPARC32PLUS) | |
4191 | && ((off & 0x3c0000) == 0 | |
4192 | || (off & 0x3c0000) == 0x3c0000)) | |
4193 | { | |
4194 | // ba,pt %xcc, FUNC | |
4195 | call_insn = 0x10680000 | (off & 0x07ffff); | |
4196 | } | |
4197 | else | |
4198 | { | |
4199 | // ba FUNC | |
4200 | call_insn = 0x10800000 | (off & 0x3fffff); | |
4201 | } | |
4202 | elfcpp::Swap<32, true>::writeval(wv, call_insn); | |
4203 | ||
4204 | // See if we can NOP out the delay slot instruction. We peek | |
4205 | // at the instruction before the call to make sure we're dealing | |
4206 | // with exactly the: | |
4207 | // | |
4208 | // or %o7, %g0, %ANY_REG | |
4209 | // call | |
4210 | // or %ANY_REG, %g0, %o7 | |
4211 | // | |
4212 | // case. Otherwise this might be a tricky piece of hand written | |
4213 | // assembler calculating %o7 in some non-trivial way, and therefore | |
4214 | // we can't be sure that NOP'ing out the delay slot is safe. | |
4215 | if (op3 == 0x02 | |
4216 | && rela.get_r_offset() >= 4) | |
4217 | { | |
4218 | if ((delay_insn & ~(0x1f << 14)) != 0x9e100000) | |
4219 | return; | |
4220 | ||
4221 | set_insn = elfcpp::Swap<32, true>::readval(wv - 1); | |
4222 | if ((set_insn & ~(0x1f << 25)) != 0x8013c000) | |
4223 | return; | |
4224 | ||
4225 | reg = (set_insn >> 25) & 0x1f; | |
4226 | if (reg == 0 || reg == 15) | |
4227 | return; | |
4228 | if (reg != ((delay_insn >> 14) & 0x1f)) | |
4229 | return; | |
4230 | ||
4231 | // All tests pass, nop it out. | |
4232 | elfcpp::Swap<32, true>::writeval(wv + 1, sparc_nop); | |
4233 | } | |
4234 | } | |
4235 | ||
f5314dd5 DM |
4236 | // Relocate section data. |
4237 | ||
4238 | template<int size, bool big_endian> | |
4239 | void | |
4240 | Target_sparc<size, big_endian>::relocate_section( | |
4241 | const Relocate_info<size, big_endian>* relinfo, | |
4242 | unsigned int sh_type, | |
4243 | const unsigned char* prelocs, | |
4244 | size_t reloc_count, | |
4245 | Output_section* output_section, | |
4246 | bool needs_special_offset_handling, | |
4247 | unsigned char* view, | |
4248 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
364c7fa5 ILT |
4249 | section_size_type view_size, |
4250 | const Reloc_symbol_changes* reloc_symbol_changes) | |
f5314dd5 DM |
4251 | { |
4252 | typedef Target_sparc<size, big_endian> Sparc; | |
4253 | typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate; | |
4d625b70 CC |
4254 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
4255 | Classify_reloc; | |
f5314dd5 DM |
4256 | |
4257 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
4258 | ||
4d625b70 CC |
4259 | gold::relocate_section<size, big_endian, Sparc, Sparc_relocate, |
4260 | gold::Default_comdat_behavior, Classify_reloc>( | |
f5314dd5 DM |
4261 | relinfo, |
4262 | this, | |
4263 | prelocs, | |
4264 | reloc_count, | |
4265 | output_section, | |
4266 | needs_special_offset_handling, | |
4267 | view, | |
4268 | address, | |
364c7fa5 ILT |
4269 | view_size, |
4270 | reloc_symbol_changes); | |
f5314dd5 DM |
4271 | } |
4272 | ||
f5314dd5 DM |
4273 | // Scan the relocs during a relocatable link. |
4274 | ||
4275 | template<int size, bool big_endian> | |
4276 | void | |
4277 | Target_sparc<size, big_endian>::scan_relocatable_relocs( | |
f5314dd5 DM |
4278 | Symbol_table* symtab, |
4279 | Layout* layout, | |
6fa2a40b | 4280 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
4281 | unsigned int data_shndx, |
4282 | unsigned int sh_type, | |
4283 | const unsigned char* prelocs, | |
4284 | size_t reloc_count, | |
4285 | Output_section* output_section, | |
4286 | bool needs_special_offset_handling, | |
4287 | size_t local_symbol_count, | |
4288 | const unsigned char* plocal_symbols, | |
4289 | Relocatable_relocs* rr) | |
4290 | { | |
4d625b70 CC |
4291 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
4292 | Classify_reloc; | |
4293 | typedef gold::Default_scan_relocatable_relocs<Classify_reloc> | |
4294 | Scan_relocatable_relocs; | |
f5314dd5 | 4295 | |
4d625b70 | 4296 | gold_assert(sh_type == elfcpp::SHT_RELA); |
f5314dd5 | 4297 | |
4d625b70 | 4298 | gold::scan_relocatable_relocs<size, big_endian, Scan_relocatable_relocs>( |
f5314dd5 DM |
4299 | symtab, |
4300 | layout, | |
4301 | object, | |
4302 | data_shndx, | |
4303 | prelocs, | |
4304 | reloc_count, | |
4305 | output_section, | |
4306 | needs_special_offset_handling, | |
4307 | local_symbol_count, | |
4308 | plocal_symbols, | |
4309 | rr); | |
4310 | } | |
4311 | ||
4d625b70 CC |
4312 | // Scan the relocs for --emit-relocs. |
4313 | ||
4314 | template<int size, bool big_endian> | |
4315 | void | |
4316 | Target_sparc<size, big_endian>::emit_relocs_scan( | |
4317 | Symbol_table* symtab, | |
4318 | Layout* layout, | |
4319 | Sized_relobj_file<size, big_endian>* object, | |
4320 | unsigned int data_shndx, | |
4321 | unsigned int sh_type, | |
4322 | const unsigned char* prelocs, | |
4323 | size_t reloc_count, | |
4324 | Output_section* output_section, | |
4325 | bool needs_special_offset_handling, | |
4326 | size_t local_symbol_count, | |
4327 | const unsigned char* plocal_syms, | |
4328 | Relocatable_relocs* rr) | |
4329 | { | |
4330 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> | |
4331 | Classify_reloc; | |
4332 | typedef gold::Default_emit_relocs_strategy<Classify_reloc> | |
4333 | Emit_relocs_strategy; | |
4334 | ||
4335 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
4336 | ||
4337 | gold::scan_relocatable_relocs<size, big_endian, Emit_relocs_strategy>( | |
4338 | symtab, | |
4339 | layout, | |
4340 | object, | |
4341 | data_shndx, | |
4342 | prelocs, | |
4343 | reloc_count, | |
4344 | output_section, | |
4345 | needs_special_offset_handling, | |
4346 | local_symbol_count, | |
4347 | plocal_syms, | |
4348 | rr); | |
4349 | } | |
4350 | ||
7404fe1b | 4351 | // Emit relocations for a section. |
f5314dd5 DM |
4352 | |
4353 | template<int size, bool big_endian> | |
4354 | void | |
7404fe1b | 4355 | Target_sparc<size, big_endian>::relocate_relocs( |
f5314dd5 DM |
4356 | const Relocate_info<size, big_endian>* relinfo, |
4357 | unsigned int sh_type, | |
4358 | const unsigned char* prelocs, | |
4359 | size_t reloc_count, | |
4360 | Output_section* output_section, | |
62fe925a | 4361 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
f5314dd5 DM |
4362 | unsigned char* view, |
4363 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
4364 | section_size_type view_size, | |
4365 | unsigned char* reloc_view, | |
4366 | section_size_type reloc_view_size) | |
4367 | { | |
4d625b70 CC |
4368 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
4369 | Classify_reloc; | |
4370 | ||
f5314dd5 DM |
4371 | gold_assert(sh_type == elfcpp::SHT_RELA); |
4372 | ||
4d625b70 | 4373 | gold::relocate_relocs<size, big_endian, Classify_reloc>( |
f5314dd5 DM |
4374 | relinfo, |
4375 | prelocs, | |
4376 | reloc_count, | |
4377 | output_section, | |
4378 | offset_in_output_section, | |
f5314dd5 DM |
4379 | view, |
4380 | view_address, | |
4381 | view_size, | |
4382 | reloc_view, | |
4383 | reloc_view_size); | |
4384 | } | |
4385 | ||
4386 | // Return the value to use for a dynamic which requires special | |
4387 | // treatment. This is how we support equality comparisons of function | |
4388 | // pointers across shared library boundaries, as described in the | |
4389 | // processor specific ABI supplement. | |
4390 | ||
4391 | template<int size, bool big_endian> | |
4392 | uint64_t | |
4393 | Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
4394 | { | |
4395 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
4396 | return this->plt_section()->address() + gsym->plt_offset(); | |
4397 | } | |
4398 | ||
a4d85145 DM |
4399 | // do_make_elf_object to override the same function in the base class. |
4400 | // We need to use a target-specific sub-class of | |
4401 | // Sized_relobj_file<size, big_endian> to process SPARC specific bits | |
4402 | // of the ELF headers. Hence we need to have our own ELF object creation. | |
4403 | ||
4404 | template<int size, bool big_endian> | |
4405 | Object* | |
4406 | Target_sparc<size, big_endian>::do_make_elf_object( | |
4407 | const std::string& name, | |
4408 | Input_file* input_file, | |
4409 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
4410 | { | |
4411 | elfcpp::Elf_Half machine = ehdr.get_e_machine(); | |
4412 | elfcpp::Elf_Word flags = ehdr.get_e_flags(); | |
4413 | elfcpp::Elf_Word omm, mm; | |
2e702c99 | 4414 | |
a4d85145 DM |
4415 | switch (machine) |
4416 | { | |
4417 | case elfcpp::EM_SPARC32PLUS: | |
4418 | this->elf_machine_ = elfcpp::EM_SPARC32PLUS; | |
4419 | break; | |
4420 | ||
4421 | case elfcpp::EM_SPARC: | |
4422 | case elfcpp::EM_SPARCV9: | |
4423 | break; | |
4424 | ||
4425 | default: | |
4426 | break; | |
4427 | } | |
4428 | ||
4429 | if (!this->elf_flags_set_) | |
4430 | { | |
4431 | this->elf_flags_ = flags; | |
4432 | this->elf_flags_set_ = true; | |
4433 | } | |
4434 | else | |
4435 | { | |
4436 | // Accumulate cpu feature bits. | |
4437 | this->elf_flags_ |= (flags & (elfcpp::EF_SPARC_32PLUS | |
4438 | | elfcpp::EF_SPARC_SUN_US1 | |
4439 | | elfcpp::EF_SPARC_HAL_R1 | |
4440 | | elfcpp::EF_SPARC_SUN_US3)); | |
4441 | ||
4442 | // Bump the memory model setting to the most restrictive | |
4443 | // one we encounter. | |
4444 | omm = (this->elf_flags_ & elfcpp::EF_SPARCV9_MM); | |
4445 | mm = (flags & elfcpp::EF_SPARCV9_MM); | |
4446 | if (omm != mm) | |
4447 | { | |
4448 | if (mm == elfcpp::EF_SPARCV9_TSO) | |
4449 | { | |
4450 | this->elf_flags_ &= ~elfcpp::EF_SPARCV9_MM; | |
4451 | this->elf_flags_ |= elfcpp::EF_SPARCV9_TSO; | |
4452 | } | |
4453 | else if (mm == elfcpp::EF_SPARCV9_PSO | |
4454 | && omm == elfcpp::EF_SPARCV9_RMO) | |
4455 | { | |
4456 | this->elf_flags_ &= ~elfcpp::EF_SPARCV9_MM; | |
4457 | this->elf_flags_ |= elfcpp::EF_SPARCV9_PSO; | |
4458 | } | |
4459 | } | |
4460 | } | |
4461 | ||
4462 | // Validate that the little-endian flag matches how we've | |
4463 | // been instantiated. | |
4464 | if (!(flags & elfcpp::EF_SPARC_LEDATA) != big_endian) | |
4465 | { | |
4466 | if (big_endian) | |
4467 | gold_error(_("%s: little endian elf flag set on BE object"), | |
4468 | name.c_str()); | |
4469 | else | |
4470 | gold_error(_("%s: little endian elf flag clear on LE object"), | |
4471 | name.c_str()); | |
4472 | } | |
4473 | ||
4474 | return Target::do_make_elf_object(name, input_file, offset, ehdr); | |
4475 | } | |
4476 | ||
4477 | // Adjust ELF file header. | |
4478 | ||
4479 | template<int size, bool big_endian> | |
4480 | void | |
4481 | Target_sparc<size, big_endian>::do_adjust_elf_header( | |
4482 | unsigned char* view, | |
cc84c10b | 4483 | int len) |
a4d85145 DM |
4484 | { |
4485 | elfcpp::Ehdr_write<size, big_endian> oehdr(view); | |
4486 | ||
4487 | oehdr.put_e_machine(this->elf_machine_); | |
4488 | oehdr.put_e_flags(this->elf_flags_); | |
4489 | ||
4490 | Sized_target<size, big_endian>::do_adjust_elf_header(view, len); | |
4491 | } | |
4492 | ||
f5314dd5 DM |
4493 | // The selector for sparc object files. |
4494 | ||
4495 | template<int size, bool big_endian> | |
4496 | class Target_selector_sparc : public Target_selector | |
4497 | { | |
4498 | public: | |
4499 | Target_selector_sparc() | |
4500 | : Target_selector(elfcpp::EM_NONE, size, big_endian, | |
03ef7571 ILT |
4501 | (size == 64 ? "elf64-sparc" : "elf32-sparc"), |
4502 | (size == 64 ? "elf64_sparc" : "elf32_sparc")) | |
f5314dd5 DM |
4503 | { } |
4504 | ||
2e702c99 RM |
4505 | virtual Target* |
4506 | do_recognize(Input_file*, off_t, int machine, int, int) | |
f5314dd5 DM |
4507 | { |
4508 | switch (size) | |
4509 | { | |
4510 | case 64: | |
2ea97941 | 4511 | if (machine != elfcpp::EM_SPARCV9) |
f5314dd5 DM |
4512 | return NULL; |
4513 | break; | |
4514 | ||
4515 | case 32: | |
2ea97941 ILT |
4516 | if (machine != elfcpp::EM_SPARC |
4517 | && machine != elfcpp::EM_SPARC32PLUS) | |
f5314dd5 DM |
4518 | return NULL; |
4519 | break; | |
4520 | ||
4521 | default: | |
4522 | return NULL; | |
4523 | } | |
4524 | ||
7f055c20 | 4525 | return this->instantiate_target(); |
f5314dd5 DM |
4526 | } |
4527 | ||
2e702c99 RM |
4528 | virtual Target* |
4529 | do_instantiate_target() | |
7f055c20 | 4530 | { return new Target_sparc<size, big_endian>(); } |
f5314dd5 DM |
4531 | }; |
4532 | ||
4533 | Target_selector_sparc<32, true> target_selector_sparc32; | |
4534 | Target_selector_sparc<64, true> target_selector_sparc64; | |
4535 | ||
4536 | } // End anonymous namespace. |