1 // sparc.cc -- sparc target support for gold.
3 // Copyright 2008 Free Software Foundation, Inc.
4 // Written by David S. Miller <davem@davemloft.net>.
6 // This file is part of gold.
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.
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.
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.
30 #include "parameters.h"
38 #include "target-reloc.h"
39 #include "target-select.h"
48 template<int size
, bool big_endian
>
49 class Output_data_plt_sparc
;
51 template<int size
, bool big_endian
>
52 class Target_sparc
: public Sized_target
<size
, big_endian
>
55 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Reloc_section
;
58 : Sized_target
<size
, big_endian
>(&sparc_info
),
59 got_(NULL
), plt_(NULL
), rela_dyn_(NULL
),
60 copy_relocs_(NULL
), dynbss_(NULL
), got_mod_index_offset_(-1U),
61 tls_get_addr_sym_(NULL
)
65 // Scan the relocations to look for symbol adjustments.
67 scan_relocs(const General_options
& options
,
70 Sized_relobj
<size
, big_endian
>* object
,
71 unsigned int data_shndx
,
73 const unsigned char* prelocs
,
75 Output_section
* output_section
,
76 bool needs_special_offset_handling
,
77 size_t local_symbol_count
,
78 const unsigned char* plocal_symbols
);
79 // Finalize the sections.
81 do_finalize_sections(Layout
*);
83 // Return the value to use for a dynamic which requires special
86 do_dynsym_value(const Symbol
*) const;
88 // Relocate a section.
90 relocate_section(const Relocate_info
<size
, big_endian
>*,
92 const unsigned char* prelocs
,
94 Output_section
* output_section
,
95 bool needs_special_offset_handling
,
97 typename
elfcpp::Elf_types
<size
>::Elf_Addr view_address
,
98 section_size_type view_size
);
100 // Scan the relocs during a relocatable link.
102 scan_relocatable_relocs(const General_options
& options
,
103 Symbol_table
* symtab
,
105 Sized_relobj
<size
, big_endian
>* object
,
106 unsigned int data_shndx
,
107 unsigned int sh_type
,
108 const unsigned char* prelocs
,
110 Output_section
* output_section
,
111 bool needs_special_offset_handling
,
112 size_t local_symbol_count
,
113 const unsigned char* plocal_symbols
,
114 Relocatable_relocs
*);
116 // Relocate a section during a relocatable link.
118 relocate_for_relocatable(const Relocate_info
<size
, big_endian
>*,
119 unsigned int sh_type
,
120 const unsigned char* prelocs
,
122 Output_section
* output_section
,
123 off_t offset_in_output_section
,
124 const Relocatable_relocs
*,
126 typename
elfcpp::Elf_types
<size
>::Elf_Addr view_address
,
127 section_size_type view_size
,
128 unsigned char* reloc_view
,
129 section_size_type reloc_view_size
);
130 // Return whether SYM is defined by the ABI.
132 do_is_defined_by_abi(Symbol
* sym
) const
134 // XXX Really need to support this better...
135 if (sym
->type() == elfcpp::STT_SPARC_REGISTER
)
138 return strcmp(sym
->name(), "___tls_get_addr") == 0;
141 // Return the size of the GOT section.
145 gold_assert(this->got_
!= NULL
);
146 return this->got_
->data_size();
151 // The class which scans relocations.
155 local(const General_options
& options
, Symbol_table
* symtab
,
156 Layout
* layout
, Target_sparc
* target
,
157 Sized_relobj
<size
, big_endian
>* object
,
158 unsigned int data_shndx
,
159 Output_section
* output_section
,
160 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
161 const elfcpp::Sym
<size
, big_endian
>& lsym
);
164 global(const General_options
& options
, Symbol_table
* symtab
,
165 Layout
* layout
, Target_sparc
* target
,
166 Sized_relobj
<size
, big_endian
>* object
,
167 unsigned int data_shndx
,
168 Output_section
* output_section
,
169 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
173 unsupported_reloc_local(Sized_relobj
<size
, big_endian
>*,
174 unsigned int r_type
);
177 unsupported_reloc_global(Sized_relobj
<size
, big_endian
>*,
178 unsigned int r_type
, Symbol
*);
181 generate_tls_call(Symbol_table
* symtab
, Layout
* layout
,
182 Target_sparc
* target
);
185 // The class which implements relocation.
190 : ignore_gd_add_(false)
195 if (this->ignore_gd_add_
)
197 // FIXME: This needs to specify the location somehow.
198 gold_error(_("missing expected TLS relocation"));
202 // Do a relocation. Return false if the caller should not issue
203 // any warnings about this relocation.
205 relocate(const Relocate_info
<size
, big_endian
>*, Target_sparc
*,
206 size_t relnum
, const elfcpp::Rela
<size
, big_endian
>&,
207 unsigned int r_type
, const Sized_symbol
<size
>*,
208 const Symbol_value
<size
>*,
210 typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
214 // Do a TLS relocation.
216 relocate_tls(const Relocate_info
<size
, big_endian
>*, Target_sparc
* target
,
217 size_t relnum
, const elfcpp::Rela
<size
, big_endian
>&,
218 unsigned int r_type
, const Sized_symbol
<size
>*,
219 const Symbol_value
<size
>*,
221 typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
224 // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD
228 // A class which returns the size required for a relocation type,
229 // used while scanning relocs during a relocatable link.
230 class Relocatable_size_for_reloc
234 get_size_for_reloc(unsigned int, Relobj
*);
237 // Get the GOT section, creating it if necessary.
238 Output_data_got
<size
, big_endian
>*
239 got_section(Symbol_table
*, Layout
*);
241 // Create a PLT entry for a global symbol.
243 make_plt_entry(Symbol_table
*, Layout
*, Symbol
*);
245 // Create a GOT entry for the TLS module index.
247 got_mod_index_entry(Symbol_table
* symtab
, Layout
* layout
,
248 Sized_relobj
<size
, big_endian
>* object
);
250 // Return the gsym for "__tls_get_addr". Cache if not already
253 tls_get_addr_sym(Symbol_table
* symtab
)
255 if (!this->tls_get_addr_sym_
)
256 this->tls_get_addr_sym_
= symtab
->lookup("__tls_get_addr", NULL
);
257 gold_assert(this->tls_get_addr_sym_
);
258 return this->tls_get_addr_sym_
;
261 // Get the PLT section.
262 const Output_data_plt_sparc
<size
, big_endian
>*
265 gold_assert(this->plt_
!= NULL
);
269 // Get the dynamic reloc section, creating it if necessary.
271 rela_dyn_section(Layout
*);
273 // Return true if the symbol may need a COPY relocation.
274 // References from an executable object to non-function symbols
275 // defined in a dynamic object may need a COPY relocation.
277 may_need_copy_reloc(Symbol
* gsym
)
279 return (!parameters
->options().shared()
280 && gsym
->is_from_dynobj()
281 && gsym
->type() != elfcpp::STT_FUNC
);
284 // Copy a relocation against a global symbol.
286 copy_reloc(const General_options
*, Symbol_table
*, Layout
*,
287 Sized_relobj
<size
, big_endian
>*, unsigned int,
288 Output_section
*, Symbol
*, const elfcpp::Rela
<size
, big_endian
>&);
290 // Information about this specific target which we pass to the
291 // general Target structure.
292 static Target::Target_info sparc_info
;
294 // The types of GOT entries needed for this platform.
297 GOT_TYPE_STANDARD
= 0, // GOT entry for a regular symbol
298 GOT_TYPE_TLS_OFFSET
= 1, // GOT entry for TLS offset
299 GOT_TYPE_TLS_PAIR
= 2, // GOT entry for TLS module/offset pair
303 Output_data_got
<size
, big_endian
>* got_
;
305 Output_data_plt_sparc
<size
, big_endian
>* plt_
;
306 // The dynamic reloc section.
307 Reloc_section
* rela_dyn_
;
308 // Relocs saved to avoid a COPY reloc.
309 Copy_relocs
<size
, big_endian
>* copy_relocs_
;
310 // Space for variables copied with a COPY reloc.
311 Output_data_space
* dynbss_
;
312 // Offset of the GOT entry for the TLS module index;
313 unsigned int got_mod_index_offset_
;
314 // Cached pointer to __tls_get_addr symbol
315 Symbol
* tls_get_addr_sym_
;
319 Target::Target_info Target_sparc
<32, true>::sparc_info
=
322 true, // is_big_endian
323 elfcpp::EM_SPARC
, // machine_code
324 false, // has_make_symbol
325 false, // has_resolve
326 false, // has_code_fill
327 true, // is_default_stack_executable
329 "/usr/lib/ld.so.1", // dynamic_linker
330 0x00010000, // default_text_segment_address
331 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
332 8 * 1024 // common_pagesize (overridable by -z common-page-size)
336 Target::Target_info Target_sparc
<64, true>::sparc_info
=
339 true, // is_big_endian
340 elfcpp::EM_SPARCV9
, // machine_code
341 false, // has_make_symbol
342 false, // has_resolve
343 false, // has_code_fill
344 true, // is_default_stack_executable
346 "/usr/lib/sparcv9/ld.so.1", // dynamic_linker
347 0x100000, // default_text_segment_address
348 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
349 8 * 1024 // common_pagesize (overridable by -z common-page-size)
352 // We have to take care here, even when operating in little-endian
353 // mode, sparc instructions are still big endian.
354 template<int size
, bool big_endian
>
355 class Sparc_relocate_functions
358 // Do a simple relocation with the addend in the relocation.
359 template<int valsize
>
361 rela(unsigned char* view
,
362 unsigned int right_shift
,
363 typename
elfcpp::Elf_types
<valsize
>::Elf_Addr dst_mask
,
364 typename
elfcpp::Swap
<size
, big_endian
>::Valtype value
,
365 typename
elfcpp::Swap
<size
, big_endian
>::Valtype addend
)
367 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
368 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
369 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
370 Valtype reloc
= ((value
+ addend
) >> right_shift
);
375 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
378 // Do a simple relocation using a symbol value with the addend in
380 template<int valsize
>
382 rela(unsigned char* view
,
383 unsigned int right_shift
,
384 typename
elfcpp::Elf_types
<valsize
>::Elf_Addr dst_mask
,
385 const Sized_relobj
<size
, big_endian
>* object
,
386 const Symbol_value
<size
>* psymval
,
387 typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype addend
)
389 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
390 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
391 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
392 Valtype reloc
= (psymval
->value(object
, addend
) >> right_shift
);
397 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
400 // Do a simple relocation using a symbol value with the addend in
401 // the relocation, unaligned.
402 template<int valsize
>
404 rela_ua(unsigned char* view
,
405 unsigned int right_shift
, elfcpp::Elf_Xword dst_mask
,
406 const Sized_relobj
<size
, big_endian
>* object
,
407 const Symbol_value
<size
>* psymval
,
408 typename
elfcpp::Swap
<size
, big_endian
>::Valtype addend
)
410 typedef typename
elfcpp::Swap_unaligned
<valsize
,
411 big_endian
>::Valtype Valtype
;
412 unsigned char* wv
= view
;
413 Valtype val
= elfcpp::Swap_unaligned
<valsize
, big_endian
>::readval(wv
);
414 Valtype reloc
= (psymval
->value(object
, addend
) >> right_shift
);
419 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
422 // Do a simple PC relative relocation with a Symbol_value with the
423 // addend in the relocation.
424 template<int valsize
>
426 pcrela(unsigned char* view
,
427 unsigned int right_shift
,
428 typename
elfcpp::Elf_types
<valsize
>::Elf_Addr dst_mask
,
429 const Sized_relobj
<size
, big_endian
>* object
,
430 const Symbol_value
<size
>* psymval
,
431 typename
elfcpp::Swap
<size
, big_endian
>::Valtype addend
,
432 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
434 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
435 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
436 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
437 Valtype reloc
= ((psymval
->value(object
, addend
) - address
)
443 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
446 template<int valsize
>
448 pcrela_unaligned(unsigned char* view
,
449 const Sized_relobj
<size
, big_endian
>* object
,
450 const Symbol_value
<size
>* psymval
,
451 typename
elfcpp::Swap
<size
, big_endian
>::Valtype addend
,
452 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
454 typedef typename
elfcpp::Swap_unaligned
<valsize
,
455 big_endian
>::Valtype Valtype
;
456 unsigned char* wv
= view
;
457 Valtype reloc
= (psymval
->value(object
, addend
) - address
);
459 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(wv
, reloc
);
462 typedef Sparc_relocate_functions
<size
, big_endian
> This
;
463 typedef Sparc_relocate_functions
<size
, true> This_insn
;
466 // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
468 wdisp30(unsigned char* view
,
469 const Sized_relobj
<size
, big_endian
>* object
,
470 const Symbol_value
<size
>* psymval
,
471 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
472 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
474 This_insn::template pcrela
<32>(view
, 2, 0x3fffffff, object
,
475 psymval
, addend
, address
);
478 // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
480 wdisp22(unsigned char* view
,
481 const Sized_relobj
<size
, big_endian
>* object
,
482 const Symbol_value
<size
>* psymval
,
483 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
484 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
486 This_insn::template pcrela
<32>(view
, 2, 0x003fffff, object
,
487 psymval
, addend
, address
);
490 // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
492 wdisp19(unsigned char* view
,
493 const Sized_relobj
<size
, big_endian
>* object
,
494 const Symbol_value
<size
>* psymval
,
495 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
496 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
498 This_insn::template pcrela
<32>(view
, 2, 0x0007ffff, object
,
499 psymval
, addend
, address
);
502 // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
504 wdisp16(unsigned char* view
,
505 const Sized_relobj
<size
, big_endian
>* object
,
506 const Symbol_value
<size
>* psymval
,
507 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
508 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
510 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
511 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
512 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
513 Valtype reloc
= ((psymval
->value(object
, addend
) - address
)
516 // The relocation value is split between the low 14 bits,
518 val
&= ~((0x3 << 20) | 0x3fff);
519 reloc
= (((reloc
& 0xc000) << (20 - 14))
520 | (reloc
& 0x3ffff));
522 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
525 // R_SPARC_PC22: (Symbol + Addend - Address) >> 10
527 pc22(unsigned char* view
,
528 const Sized_relobj
<size
, big_endian
>* object
,
529 const Symbol_value
<size
>* psymval
,
530 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
531 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
533 This_insn::template pcrela
<32>(view
, 10, 0x003fffff, object
,
534 psymval
, addend
, address
);
537 // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
539 pc10(unsigned char* view
,
540 const Sized_relobj
<size
, big_endian
>* object
,
541 const Symbol_value
<size
>* psymval
,
542 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
543 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
545 This_insn::template pcrela
<32>(view
, 0, 0x000003ff, object
,
546 psymval
, addend
, address
);
549 // R_SPARC_HI22: (Symbol + Addend) >> 10
551 hi22(unsigned char* view
,
552 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
553 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
555 This_insn::template rela
<32>(view
, 10, 0x003fffff, value
, addend
);
558 // R_SPARC_HI22: (Symbol + Addend) >> 10
560 hi22(unsigned char* view
,
561 const Sized_relobj
<size
, big_endian
>* object
,
562 const Symbol_value
<size
>* psymval
,
563 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
565 This_insn::template rela
<32>(view
, 10, 0x003fffff, object
, psymval
, addend
);
568 // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
570 pcplt22(unsigned char* view
,
571 const Sized_relobj
<size
, big_endian
>* object
,
572 const Symbol_value
<size
>* psymval
,
573 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
574 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
576 This_insn::template pcrela
<32>(view
, 10, 0x003fffff, object
,
577 psymval
, addend
, address
);
580 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
582 lo10(unsigned char* view
,
583 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
584 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
586 This_insn::template rela
<32>(view
, 0, 0x000003ff, value
, addend
);
589 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
591 lo10(unsigned char* view
,
592 const Sized_relobj
<size
, big_endian
>* object
,
593 const Symbol_value
<size
>* psymval
,
594 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
596 This_insn::template rela
<32>(view
, 0, 0x000003ff, object
, psymval
, addend
);
599 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
601 lo10(unsigned char* view
,
602 const Sized_relobj
<size
, big_endian
>* object
,
603 const Symbol_value
<size
>* psymval
,
604 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
605 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
607 This_insn::template pcrela
<32>(view
, 0, 0x000003ff, object
,
608 psymval
, addend
, address
);
611 // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
613 olo10(unsigned char* view
,
614 const Sized_relobj
<size
, big_endian
>* object
,
615 const Symbol_value
<size
>* psymval
,
616 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
617 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend2
)
619 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
620 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
621 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
622 Valtype reloc
= psymval
->value(object
, addend
);
629 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
632 // R_SPARC_22: (Symbol + Addend)
634 rela32_22(unsigned char* view
,
635 const Sized_relobj
<size
, big_endian
>* object
,
636 const Symbol_value
<size
>* psymval
,
637 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
639 This_insn::template rela
<32>(view
, 0, 0x003fffff, object
, psymval
, addend
);
642 // R_SPARC_13: (Symbol + Addend)
644 rela32_13(unsigned char* view
,
645 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
646 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
648 This_insn::template rela
<32>(view
, 0, 0x00001fff, value
, addend
);
651 // R_SPARC_13: (Symbol + Addend)
653 rela32_13(unsigned char* view
,
654 const Sized_relobj
<size
, big_endian
>* object
,
655 const Symbol_value
<size
>* psymval
,
656 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
658 This_insn::template rela
<32>(view
, 0, 0x00001fff, object
, psymval
, addend
);
661 // R_SPARC_UA16: (Symbol + Addend)
663 ua16(unsigned char* view
,
664 const Sized_relobj
<size
, big_endian
>* object
,
665 const Symbol_value
<size
>* psymval
,
666 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
668 This::template rela_ua
<16>(view
, 0, 0xffff, object
, psymval
, addend
);
671 // R_SPARC_UA32: (Symbol + Addend)
673 ua32(unsigned char* view
,
674 const Sized_relobj
<size
, big_endian
>* object
,
675 const Symbol_value
<size
>* psymval
,
676 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
678 This::template rela_ua
<32>(view
, 0, 0xffffffff, object
, psymval
, addend
);
681 // R_SPARC_UA64: (Symbol + Addend)
683 ua64(unsigned char* view
,
684 const Sized_relobj
<size
, big_endian
>* object
,
685 const Symbol_value
<size
>* psymval
,
686 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
688 This::template rela_ua
<64>(view
, 0, ~(elfcpp::Elf_Xword
) 0,
689 object
, psymval
, addend
);
692 // R_SPARC_DISP8: (Symbol + Addend - Address)
694 disp8(unsigned char* view
,
695 const Sized_relobj
<size
, big_endian
>* object
,
696 const Symbol_value
<size
>* psymval
,
697 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
698 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
700 This::template pcrela_unaligned
<8>(view
, object
, psymval
,
704 // R_SPARC_DISP16: (Symbol + Addend - Address)
706 disp16(unsigned char* view
,
707 const Sized_relobj
<size
, big_endian
>* object
,
708 const Symbol_value
<size
>* psymval
,
709 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
710 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
712 This::template pcrela_unaligned
<16>(view
, object
, psymval
,
716 // R_SPARC_DISP32: (Symbol + Addend - Address)
718 disp32(unsigned char* view
,
719 const Sized_relobj
<size
, big_endian
>* object
,
720 const Symbol_value
<size
>* psymval
,
721 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
722 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
724 This::template pcrela_unaligned
<32>(view
, object
, psymval
,
728 // R_SPARC_DISP64: (Symbol + Addend - Address)
730 disp64(unsigned char* view
,
731 const Sized_relobj
<size
, big_endian
>* object
,
732 const Symbol_value
<size
>* psymval
,
733 elfcpp::Elf_Xword addend
,
734 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
736 This::template pcrela_unaligned
<64>(view
, object
, psymval
,
740 // R_SPARC_H44: (Symbol + Addend) >> 22
742 h44(unsigned char* view
,
743 const Sized_relobj
<size
, big_endian
>* object
,
744 const Symbol_value
<size
>* psymval
,
745 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
747 This_insn::template rela
<32>(view
, 22, 0x003fffff, object
, psymval
, addend
);
750 // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
752 m44(unsigned char* view
,
753 const Sized_relobj
<size
, big_endian
>* object
,
754 const Symbol_value
<size
>* psymval
,
755 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
757 This_insn::template rela
<32>(view
, 12, 0x000003ff, object
, psymval
, addend
);
760 // R_SPARC_L44: (Symbol + Addend) & 0xfff
762 l44(unsigned char* view
,
763 const Sized_relobj
<size
, big_endian
>* object
,
764 const Symbol_value
<size
>* psymval
,
765 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
767 This_insn::template rela
<32>(view
, 0, 0x00000fff, object
, psymval
, addend
);
770 // R_SPARC_HH22: (Symbol + Addend) >> 42
772 hh22(unsigned char* view
,
773 const Sized_relobj
<size
, big_endian
>* object
,
774 const Symbol_value
<size
>* psymval
,
775 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
777 This_insn::template rela
<32>(view
, 42, 0x003fffff, object
, psymval
, addend
);
780 // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
782 pc_hh22(unsigned char* view
,
783 const Sized_relobj
<size
, big_endian
>* object
,
784 const Symbol_value
<size
>* psymval
,
785 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
786 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
788 This_insn::template pcrela
<32>(view
, 42, 0x003fffff, object
,
789 psymval
, addend
, address
);
792 // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
794 hm10(unsigned char* view
,
795 const Sized_relobj
<size
, big_endian
>* object
,
796 const Symbol_value
<size
>* psymval
,
797 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
799 This_insn::template rela
<32>(view
, 32, 0x000003ff, object
, psymval
, addend
);
802 // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
804 pc_hm10(unsigned char* view
,
805 const Sized_relobj
<size
, big_endian
>* object
,
806 const Symbol_value
<size
>* psymval
,
807 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
808 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
810 This_insn::template pcrela
<32>(view
, 32, 0x000003ff, object
,
811 psymval
, addend
, address
);
814 // R_SPARC_11: (Symbol + Addend)
816 rela32_11(unsigned char* view
,
817 const Sized_relobj
<size
, big_endian
>* object
,
818 const Symbol_value
<size
>* psymval
,
819 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
821 This_insn::template rela
<32>(view
, 0, 0x000007ff, object
, psymval
, addend
);
824 // R_SPARC_10: (Symbol + Addend)
826 rela32_10(unsigned char* view
,
827 const Sized_relobj
<size
, big_endian
>* object
,
828 const Symbol_value
<size
>* psymval
,
829 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
831 This_insn::template rela
<32>(view
, 0, 0x000003ff, object
, psymval
, addend
);
834 // R_SPARC_7: (Symbol + Addend)
836 rela32_7(unsigned char* view
,
837 const Sized_relobj
<size
, big_endian
>* object
,
838 const Symbol_value
<size
>* psymval
,
839 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
841 This_insn::template rela
<32>(view
, 0, 0x0000007f, object
, psymval
, addend
);
844 // R_SPARC_6: (Symbol + Addend)
846 rela32_6(unsigned char* view
,
847 const Sized_relobj
<size
, big_endian
>* object
,
848 const Symbol_value
<size
>* psymval
,
849 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
851 This_insn::template rela
<32>(view
, 0, 0x0000003f, object
, psymval
, addend
);
854 // R_SPARC_5: (Symbol + Addend)
856 rela32_5(unsigned char* view
,
857 const Sized_relobj
<size
, big_endian
>* object
,
858 const Symbol_value
<size
>* psymval
,
859 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
861 This_insn::template rela
<32>(view
, 0, 0x0000001f, object
, psymval
, addend
);
864 // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
866 ldo_hix22(unsigned char* view
,
867 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
868 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
870 This_insn::hi22(view
, value
, addend
);
873 // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
875 ldo_lox10(unsigned char* view
,
876 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
877 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
879 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
880 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
881 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
882 Valtype reloc
= (value
+ addend
);
887 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
890 // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
892 hix22(unsigned char* view
,
893 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
894 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
896 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
897 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
898 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
899 Valtype reloc
= (value
+ addend
);
903 reloc
^= ~(Valtype
)0;
908 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
911 // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
913 hix22(unsigned char* view
,
914 const Sized_relobj
<size
, big_endian
>* object
,
915 const Symbol_value
<size
>* psymval
,
916 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
918 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
919 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
920 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
921 Valtype reloc
= psymval
->value(object
, addend
);
925 reloc
^= ~(Valtype
)0;
930 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
934 // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
936 lox10(unsigned char* view
,
937 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
938 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
940 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
941 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
942 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
943 Valtype reloc
= (value
+ addend
);
949 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
952 // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
954 lox10(unsigned char* view
,
955 const Sized_relobj
<size
, big_endian
>* object
,
956 const Symbol_value
<size
>* psymval
,
957 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
959 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
960 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
961 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
962 Valtype reloc
= psymval
->value(object
, addend
);
968 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
972 // Get the GOT section, creating it if necessary.
974 template<int size
, bool big_endian
>
975 Output_data_got
<size
, big_endian
>*
976 Target_sparc
<size
, big_endian
>::got_section(Symbol_table
* symtab
,
979 if (this->got_
== NULL
)
981 gold_assert(symtab
!= NULL
&& layout
!= NULL
);
983 this->got_
= new Output_data_got
<size
, big_endian
>();
985 layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
986 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
989 // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
990 symtab
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
992 0, 0, elfcpp::STT_OBJECT
,
994 elfcpp::STV_HIDDEN
, 0,
1001 // Get the dynamic reloc section, creating it if necessary.
1003 template<int size
, bool big_endian
>
1004 typename Target_sparc
<size
, big_endian
>::Reloc_section
*
1005 Target_sparc
<size
, big_endian
>::rela_dyn_section(Layout
* layout
)
1007 if (this->rela_dyn_
== NULL
)
1009 gold_assert(layout
!= NULL
);
1010 this->rela_dyn_
= new Reloc_section();
1011 layout
->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA
,
1012 elfcpp::SHF_ALLOC
, this->rela_dyn_
);
1014 return this->rela_dyn_
;
1017 // A class to handle the PLT data.
1019 template<int size
, bool big_endian
>
1020 class Output_data_plt_sparc
: public Output_section_data
1023 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
1024 size
, big_endian
> Reloc_section
;
1026 Output_data_plt_sparc(Layout
*);
1028 // Add an entry to the PLT.
1029 void add_entry(Symbol
* gsym
);
1031 // Return the .rela.plt section data.
1032 const Reloc_section
* rel_plt() const
1038 void do_adjust_output_section(Output_section
* os
);
1041 // The size of an entry in the PLT.
1042 static const int base_plt_entry_size
= (size
== 32 ? 12 : 32);
1044 static const unsigned int plt_entries_per_block
= 160;
1045 static const unsigned int plt_insn_chunk_size
= 24;
1046 static const unsigned int plt_pointer_chunk_size
= 8;
1047 static const unsigned int plt_block_size
=
1048 (plt_entries_per_block
1049 * (plt_insn_chunk_size
+ plt_pointer_chunk_size
));
1051 // Set the final size.
1053 set_final_data_size()
1055 unsigned int full_count
= this->count_
+ 4;
1056 unsigned int extra
= (size
== 32 ? 4 : 0);
1058 if (size
== 32 || full_count
< 32768)
1059 this->set_data_size((full_count
* base_plt_entry_size
) + extra
);
1062 unsigned int ext_cnt
= full_count
- 32768;
1064 this->set_data_size((32768 * base_plt_entry_size
)
1066 * (plt_insn_chunk_size
1067 + plt_pointer_chunk_size
)));
1071 // Write out the PLT data.
1073 do_write(Output_file
*);
1075 // The reloc section.
1076 Reloc_section
* rel_
;
1077 // The number of PLT entries.
1078 unsigned int count_
;
1081 // Create the PLT section. The ordinary .got section is an argument,
1082 // since we need to refer to the start.
1084 template<int size
, bool big_endian
>
1085 Output_data_plt_sparc
<size
, big_endian
>::Output_data_plt_sparc(Layout
* layout
)
1086 : Output_section_data(size
== 32 ? 4 : 8), count_(0)
1088 this->rel_
= new Reloc_section();
1089 layout
->add_output_section_data(".rela.plt", elfcpp::SHT_RELA
,
1090 elfcpp::SHF_ALLOC
, this->rel_
);
1093 template<int size
, bool big_endian
>
1095 Output_data_plt_sparc
<size
, big_endian
>::do_adjust_output_section(Output_section
* os
)
1100 // Add an entry to the PLT.
1102 template<int size
, bool big_endian
>
1104 Output_data_plt_sparc
<size
, big_endian
>::add_entry(Symbol
* gsym
)
1106 gold_assert(!gsym
->has_plt_offset());
1108 unsigned int index
= this->count_
+ 4;
1109 section_offset_type plt_offset
;
1111 if (size
== 32 || index
< 32768)
1112 plt_offset
= index
* base_plt_entry_size
;
1115 unsigned int ext_index
= index
- 32768;
1117 plt_offset
= (32768 * base_plt_entry_size
)
1118 + ((ext_index
/ plt_entries_per_block
)
1120 + ((ext_index
% plt_entries_per_block
)
1121 * plt_insn_chunk_size
);
1124 gsym
->set_plt_offset(plt_offset
);
1128 // Every PLT entry needs a reloc.
1129 gsym
->set_needs_dynsym_entry();
1130 this->rel_
->add_global(gsym
, elfcpp::R_SPARC_JMP_SLOT
, this,
1133 // Note that we don't need to save the symbol. The contents of the
1134 // PLT are independent of which symbols are used. The symbols only
1135 // appear in the relocations.
1138 static const unsigned int sparc_nop
= 0x01000000;
1139 static const unsigned int sparc_sethi_g1
= 0x03000000;
1140 static const unsigned int sparc_branch_always
= 0x30800000;
1141 static const unsigned int sparc_branch_always_pt
= 0x30680000;
1142 static const unsigned int sparc_mov
= 0x80100000;
1143 static const unsigned int sparc_mov_g0_o0
= 0x90100000;
1144 static const unsigned int sparc_mov_o7_g5
= 0x8a10000f;
1145 static const unsigned int sparc_call_plus_8
= 0x40000002;
1146 static const unsigned int sparc_ldx_o7_imm_g1
= 0xc25be000;
1147 static const unsigned int sparc_jmpl_o7_g1_g1
= 0x83c3c001;
1148 static const unsigned int sparc_mov_g5_o7
= 0x9e100005;
1150 // Write out the PLT.
1152 template<int size
, bool big_endian
>
1154 Output_data_plt_sparc
<size
, big_endian
>::do_write(Output_file
* of
)
1156 const off_t offset
= this->offset();
1157 const section_size_type oview_size
=
1158 convert_to_section_size_type(this->data_size());
1159 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
1160 unsigned char* pov
= oview
;
1162 memset(pov
, 0, base_plt_entry_size
* 4);
1163 pov
+= base_plt_entry_size
* 4;
1165 unsigned int plt_offset
= base_plt_entry_size
* 4;
1166 const unsigned int count
= this->count_
;
1172 limit
= (count
> 32768 ? 32768 : count
);
1174 for (unsigned int i
= 0; i
< limit
; ++i
)
1176 elfcpp::Swap
<32, true>::writeval(pov
+ 0x00,
1177 sparc_sethi_g1
+ plt_offset
);
1178 elfcpp::Swap
<32, true>::writeval(pov
+ 0x04,
1179 sparc_branch_always_pt
+
1180 (((base_plt_entry_size
-
1181 (plt_offset
+ 4)) >> 2) &
1183 elfcpp::Swap
<32, true>::writeval(pov
+ 0x08, sparc_nop
);
1184 elfcpp::Swap
<32, true>::writeval(pov
+ 0x0c, sparc_nop
);
1185 elfcpp::Swap
<32, true>::writeval(pov
+ 0x10, sparc_nop
);
1186 elfcpp::Swap
<32, true>::writeval(pov
+ 0x14, sparc_nop
);
1187 elfcpp::Swap
<32, true>::writeval(pov
+ 0x18, sparc_nop
);
1188 elfcpp::Swap
<32, true>::writeval(pov
+ 0x1c, sparc_nop
);
1190 pov
+= base_plt_entry_size
;
1191 plt_offset
+= base_plt_entry_size
;
1196 unsigned int ext_cnt
= count
- 32768;
1197 unsigned int blks
= ext_cnt
/ plt_entries_per_block
;
1199 for (unsigned int i
= 0; i
< blks
; ++i
)
1201 unsigned int data_off
= (plt_entries_per_block
1202 * plt_insn_chunk_size
) - 4;
1204 for (unsigned int j
= 0; j
< plt_entries_per_block
; ++j
)
1206 elfcpp::Swap
<32, true>::writeval(pov
+ 0x00,
1208 elfcpp::Swap
<32, true>::writeval(pov
+ 0x04,
1210 elfcpp::Swap
<32, true>::writeval(pov
+ 0x08,
1212 elfcpp::Swap
<32, true>::writeval(pov
+ 0x0c,
1213 sparc_ldx_o7_imm_g1
+
1214 (data_off
& 0x1fff));
1215 elfcpp::Swap
<32, true>::writeval(pov
+ 0x10,
1216 sparc_jmpl_o7_g1_g1
);
1217 elfcpp::Swap
<32, true>::writeval(pov
+ 0x14,
1220 elfcpp::Swap
<64, big_endian
>::writeval(
1221 pov
+ 0x4 + data_off
,
1222 (elfcpp::Elf_Xword
) (oview
- (pov
+ 0x04)));
1224 pov
+= plt_insn_chunk_size
;
1229 unsigned int sub_blk_cnt
= ext_cnt
% plt_entries_per_block
;
1230 for (unsigned int i
= 0; i
< sub_blk_cnt
; ++i
)
1232 unsigned int data_off
= (sub_blk_cnt
1233 * plt_insn_chunk_size
) - 4;
1235 for (unsigned int j
= 0; j
< plt_entries_per_block
; ++j
)
1237 elfcpp::Swap
<32, true>::writeval(pov
+ 0x00,
1239 elfcpp::Swap
<32, true>::writeval(pov
+ 0x04,
1241 elfcpp::Swap
<32, true>::writeval(pov
+ 0x08,
1243 elfcpp::Swap
<32, true>::writeval(pov
+ 0x0c,
1244 sparc_ldx_o7_imm_g1
+
1245 (data_off
& 0x1fff));
1246 elfcpp::Swap
<32, true>::writeval(pov
+ 0x10,
1247 sparc_jmpl_o7_g1_g1
);
1248 elfcpp::Swap
<32, true>::writeval(pov
+ 0x14,
1251 elfcpp::Swap
<64, big_endian
>::writeval(
1252 pov
+ 0x4 + data_off
,
1253 (elfcpp::Elf_Xword
) (oview
- (pov
+ 0x04)));
1255 pov
+= plt_insn_chunk_size
;
1263 for (unsigned int i
= 0; i
< count
; ++i
)
1265 elfcpp::Swap
<32, true>::writeval(pov
+ 0x00,
1266 sparc_sethi_g1
+ plt_offset
);
1267 elfcpp::Swap
<32, true>::writeval(pov
+ 0x04,
1268 sparc_branch_always
+
1269 (((- (plt_offset
+ 4)) >> 2) &
1271 elfcpp::Swap
<32, true>::writeval(pov
+ 0x08, sparc_nop
);
1273 pov
+= base_plt_entry_size
;
1274 plt_offset
+= base_plt_entry_size
;
1277 elfcpp::Swap
<32, true>::writeval(pov
, sparc_nop
);
1281 gold_assert(static_cast<section_size_type
>(pov
- oview
) == oview_size
);
1283 of
->write_output_view(offset
, oview_size
, oview
);
1286 // Create a PLT entry for a global symbol.
1288 template<int size
, bool big_endian
>
1290 Target_sparc
<size
, big_endian
>::make_plt_entry(Symbol_table
* symtab
,
1294 if (gsym
->has_plt_offset())
1297 if (this->plt_
== NULL
)
1299 // Create the GOT sections first.
1300 this->got_section(symtab
, layout
);
1302 this->plt_
= new Output_data_plt_sparc
<size
, big_endian
>(layout
);
1303 layout
->add_output_section_data(".plt", elfcpp::SHT_PROGBITS
,
1305 | elfcpp::SHF_EXECINSTR
1306 | elfcpp::SHF_WRITE
),
1309 // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1310 symtab
->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL
,
1312 0, 0, elfcpp::STT_OBJECT
,
1314 elfcpp::STV_HIDDEN
, 0,
1318 this->plt_
->add_entry(gsym
);
1321 // Create a GOT entry for the TLS module index.
1323 template<int size
, bool big_endian
>
1325 Target_sparc
<size
, big_endian
>::got_mod_index_entry(Symbol_table
* symtab
,
1327 Sized_relobj
<size
, big_endian
>* object
)
1329 if (this->got_mod_index_offset_
== -1U)
1331 gold_assert(symtab
!= NULL
&& layout
!= NULL
&& object
!= NULL
);
1332 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
1333 Output_data_got
<size
, big_endian
>* got
;
1334 unsigned int got_offset
;
1336 got
= this->got_section(symtab
, layout
);
1337 got_offset
= got
->add_constant(0);
1338 rela_dyn
->add_local(object
, 0,
1340 elfcpp::R_SPARC_TLS_DTPMOD64
:
1341 elfcpp::R_SPARC_TLS_DTPMOD32
), got
,
1343 got
->add_constant(0);
1344 this->got_mod_index_offset_
= got_offset
;
1346 return this->got_mod_index_offset_
;
1349 // Handle a relocation against a non-function symbol defined in a
1350 // dynamic object. The traditional way to handle this is to generate
1351 // a COPY relocation to copy the variable at runtime from the shared
1352 // object into the executable's data segment. However, this is
1353 // undesirable in general, as if the size of the object changes in the
1354 // dynamic object, the executable will no longer work correctly. If
1355 // this relocation is in a writable section, then we can create a
1356 // dynamic reloc and the dynamic linker will resolve it to the correct
1357 // address at runtime. However, we do not want do that if the
1358 // relocation is in a read-only section, as it would prevent the
1359 // readonly segment from being shared. And if we have to eventually
1360 // generate a COPY reloc, then any dynamic relocations will be
1361 // useless. So this means that if this is a writable section, we need
1362 // to save the relocation until we see whether we have to create a
1363 // COPY relocation for this symbol for any other relocation.
1365 template<int size
, bool big_endian
>
1367 Target_sparc
<size
, big_endian
>::copy_reloc(const General_options
* options
,
1368 Symbol_table
* symtab
,
1370 Sized_relobj
<size
, big_endian
>* object
,
1371 unsigned int data_shndx
,
1372 Output_section
* output_section
,
1374 const elfcpp::Rela
<size
, big_endian
>& rel
)
1376 Sized_symbol
<size
>* ssym
= symtab
->get_sized_symbol
<size
>(gsym
);
1378 if (!Copy_relocs
<size
, big_endian
>::need_copy_reloc(options
, object
,
1381 // So far we do not need a COPY reloc. Save this relocation.
1382 // If it turns out that we never need a COPY reloc for this
1383 // symbol, then we will emit the relocation.
1384 if (this->copy_relocs_
== NULL
)
1385 this->copy_relocs_
= new Copy_relocs
<size
, big_endian
>();
1386 this->copy_relocs_
->save(ssym
, object
, data_shndx
, output_section
, rel
);
1390 // Allocate space for this symbol in the .bss section.
1392 typename
elfcpp::Elf_types
<size
>::Elf_WXword symsize
= ssym
->symsize();
1394 // There is no defined way to determine the required alignment
1395 // of the symbol. We pick the alignment based on the size. We
1396 // set an arbitrary maximum of 256.
1398 // XXX remove this when bss alignment issue is fixed...
1399 for (align
= (size
== 32 ? 4 : 8); align
< 512; align
<<= 1)
1400 if ((symsize
& align
) != 0)
1403 if (this->dynbss_
== NULL
)
1405 this->dynbss_
= new Output_data_space(align
);
1406 layout
->add_output_section_data(".bss",
1409 | elfcpp::SHF_WRITE
),
1413 Output_data_space
* dynbss
= this->dynbss_
;
1415 if (align
> dynbss
->addralign())
1416 dynbss
->set_space_alignment(align
);
1418 section_size_type dynbss_size
=
1419 convert_to_section_size_type(dynbss
->current_data_size());
1420 dynbss_size
= align_address(dynbss_size
, align
);
1421 section_size_type offset
= dynbss_size
;
1422 dynbss
->set_current_data_size(dynbss_size
+ symsize
);
1424 symtab
->define_with_copy_reloc(ssym
, dynbss
, offset
);
1426 // Add the COPY reloc.
1427 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
1428 rela_dyn
->add_global(ssym
, elfcpp::R_SPARC_COPY
, dynbss
, offset
, 0);
1432 // Optimize the TLS relocation type based on what we know about the
1433 // symbol. IS_FINAL is true if the final address of this symbol is
1434 // known at link time.
1436 static tls::Tls_optimization
1437 optimize_tls_reloc(bool is_final
, int r_type
)
1439 // If we are generating a shared library, then we can't do anything
1441 if (parameters
->options().shared())
1442 return tls::TLSOPT_NONE
;
1446 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
1447 case elfcpp::R_SPARC_TLS_GD_LO10
:
1448 case elfcpp::R_SPARC_TLS_GD_ADD
:
1449 case elfcpp::R_SPARC_TLS_GD_CALL
:
1450 // These are General-Dynamic which permits fully general TLS
1451 // access. Since we know that we are generating an executable,
1452 // we can convert this to Initial-Exec. If we also know that
1453 // this is a local symbol, we can further switch to Local-Exec.
1455 return tls::TLSOPT_TO_LE
;
1456 return tls::TLSOPT_TO_IE
;
1458 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
1459 case elfcpp::R_SPARC_TLS_LDM_LO10
:
1460 case elfcpp::R_SPARC_TLS_LDM_ADD
:
1461 case elfcpp::R_SPARC_TLS_LDM_CALL
:
1462 // This is Local-Dynamic, which refers to a local symbol in the
1463 // dynamic TLS block. Since we know that we generating an
1464 // executable, we can switch to Local-Exec.
1465 return tls::TLSOPT_TO_LE
;
1467 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
1468 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
1469 case elfcpp::R_SPARC_TLS_LDO_ADD
:
1470 // Another type of Local-Dynamic relocation.
1471 return tls::TLSOPT_TO_LE
;
1473 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
1474 case elfcpp::R_SPARC_TLS_IE_LO10
:
1475 case elfcpp::R_SPARC_TLS_IE_LD
:
1476 case elfcpp::R_SPARC_TLS_IE_LDX
:
1477 // These are Initial-Exec relocs which get the thread offset
1478 // from the GOT. If we know that we are linking against the
1479 // local symbol, we can switch to Local-Exec, which links the
1480 // thread offset into the instruction.
1482 return tls::TLSOPT_TO_LE
;
1483 return tls::TLSOPT_NONE
;
1485 case elfcpp::R_SPARC_TLS_LE_HIX22
: // Local-exec
1486 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1487 // When we already have Local-Exec, there is nothing further we
1489 return tls::TLSOPT_NONE
;
1496 // Generate a PLT entry slot for a call to __tls_get_addr
1497 template<int size
, bool big_endian
>
1499 Target_sparc
<size
, big_endian
>::Scan::generate_tls_call(Symbol_table
* symtab
,
1501 Target_sparc
<size
, big_endian
>* target
)
1503 Symbol
* gsym
= target
->tls_get_addr_sym(symtab
);
1505 target
->make_plt_entry(symtab
, layout
, gsym
);
1508 // Report an unsupported relocation against a local symbol.
1510 template<int size
, bool big_endian
>
1512 Target_sparc
<size
, big_endian
>::Scan::unsupported_reloc_local(
1513 Sized_relobj
<size
, big_endian
>* object
,
1514 unsigned int r_type
)
1516 gold_error(_("%s: unsupported reloc %u against local symbol"),
1517 object
->name().c_str(), r_type
);
1520 // Scan a relocation for a local symbol.
1522 template<int size
, bool big_endian
>
1524 Target_sparc
<size
, big_endian
>::Scan::local(
1525 const General_options
&,
1526 Symbol_table
* symtab
,
1528 Target_sparc
<size
, big_endian
>* target
,
1529 Sized_relobj
<size
, big_endian
>* object
,
1530 unsigned int data_shndx
,
1531 Output_section
* output_section
,
1532 const elfcpp::Rela
<size
, big_endian
>& reloc
,
1533 unsigned int r_type
,
1534 const elfcpp::Sym
<size
, big_endian
>& lsym
)
1536 unsigned int orig_r_type
= r_type
;
1541 case elfcpp::R_SPARC_NONE
:
1542 case elfcpp::R_SPARC_REGISTER
:
1543 case elfcpp::R_SPARC_GNU_VTINHERIT
:
1544 case elfcpp::R_SPARC_GNU_VTENTRY
:
1547 case elfcpp::R_SPARC_64
:
1548 case elfcpp::R_SPARC_32
:
1549 // If building a shared library (or a position-independent
1550 // executable), we need to create a dynamic relocation for
1551 // this location. The relocation applied at link time will
1552 // apply the link-time value, so we flag the location with
1553 // an R_SPARC_RELATIVE relocation so the dynamic loader can
1554 // relocate it easily.
1555 if (parameters
->options().output_is_position_independent())
1557 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1558 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1559 rela_dyn
->add_local_relative(object
, r_sym
, elfcpp::R_SPARC_RELATIVE
,
1560 output_section
, data_shndx
,
1561 reloc
.get_r_offset(),
1562 reloc
.get_r_addend());
1566 case elfcpp::R_SPARC_HIX22
:
1567 case elfcpp::R_SPARC_LOX10
:
1568 case elfcpp::R_SPARC_H44
:
1569 case elfcpp::R_SPARC_M44
:
1570 case elfcpp::R_SPARC_L44
:
1571 case elfcpp::R_SPARC_HH22
:
1572 case elfcpp::R_SPARC_HM10
:
1573 case elfcpp::R_SPARC_LM22
:
1574 case elfcpp::R_SPARC_UA64
:
1575 case elfcpp::R_SPARC_UA32
:
1576 case elfcpp::R_SPARC_UA16
:
1577 case elfcpp::R_SPARC_HI22
:
1578 case elfcpp::R_SPARC_LO10
:
1579 case elfcpp::R_SPARC_OLO10
:
1580 case elfcpp::R_SPARC_16
:
1581 case elfcpp::R_SPARC_11
:
1582 case elfcpp::R_SPARC_10
:
1583 case elfcpp::R_SPARC_8
:
1584 case elfcpp::R_SPARC_7
:
1585 case elfcpp::R_SPARC_6
:
1586 case elfcpp::R_SPARC_5
:
1587 // If building a shared library (or a position-independent
1588 // executable), we need to create a dynamic relocation for
1590 if (parameters
->options().output_is_position_independent())
1592 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1593 if (lsym
.get_st_type() != elfcpp::STT_SECTION
)
1595 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1596 rela_dyn
->add_local(object
, r_sym
, orig_r_type
, output_section
,
1597 data_shndx
, reloc
.get_r_offset(),
1598 reloc
.get_r_addend());
1602 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1603 gold_assert(lsym
.get_st_value() == 0);
1604 rela_dyn
->add_local_relative(object
, r_sym
, orig_r_type
,
1605 output_section
, data_shndx
,
1606 reloc
.get_r_offset(),
1607 reloc
.get_r_addend());
1612 case elfcpp::R_SPARC_WDISP30
:
1613 case elfcpp::R_SPARC_WDISP22
:
1614 case elfcpp::R_SPARC_WDISP19
:
1615 case elfcpp::R_SPARC_WDISP16
:
1616 case elfcpp::R_SPARC_DISP8
:
1617 case elfcpp::R_SPARC_DISP16
:
1618 case elfcpp::R_SPARC_DISP32
:
1619 case elfcpp::R_SPARC_DISP64
:
1620 case elfcpp::R_SPARC_PC10
:
1621 case elfcpp::R_SPARC_PC22
:
1624 case elfcpp::R_SPARC_GOT10
:
1625 case elfcpp::R_SPARC_GOT13
:
1626 case elfcpp::R_SPARC_GOT22
:
1628 // The symbol requires a GOT entry.
1629 Output_data_got
<size
, big_endian
>* got
;
1632 got
= target
->got_section(symtab
, layout
);
1633 r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1635 // If we are generating a shared object, we need to add a
1636 // dynamic relocation for this symbol's GOT entry.
1637 if (parameters
->options().output_is_position_independent())
1639 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
))
1641 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1644 off
= got
->add_constant(0);
1645 object
->set_local_got_offset(r_sym
, GOT_TYPE_STANDARD
, off
);
1646 rela_dyn
->add_local_relative(object
, r_sym
,
1647 elfcpp::R_SPARC_RELATIVE
,
1652 got
->add_local(object
, r_sym
, GOT_TYPE_STANDARD
);
1656 // These are initial TLS relocs, which are expected when
1658 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
1659 case elfcpp::R_SPARC_TLS_GD_LO10
:
1660 case elfcpp::R_SPARC_TLS_GD_ADD
:
1661 case elfcpp::R_SPARC_TLS_GD_CALL
:
1662 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
1663 case elfcpp::R_SPARC_TLS_LDM_LO10
:
1664 case elfcpp::R_SPARC_TLS_LDM_ADD
:
1665 case elfcpp::R_SPARC_TLS_LDM_CALL
:
1666 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
1667 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
1668 case elfcpp::R_SPARC_TLS_LDO_ADD
:
1669 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
1670 case elfcpp::R_SPARC_TLS_IE_LO10
:
1671 case elfcpp::R_SPARC_TLS_IE_LD
:
1672 case elfcpp::R_SPARC_TLS_IE_LDX
:
1673 case elfcpp::R_SPARC_TLS_LE_HIX22
: // Local-exec
1674 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1676 bool output_is_shared
= parameters
->options().shared();
1677 const tls::Tls_optimization optimized_type
1678 = optimize_tls_reloc(!output_is_shared
, r_type
);
1681 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
1682 case elfcpp::R_SPARC_TLS_GD_LO10
:
1683 case elfcpp::R_SPARC_TLS_GD_ADD
:
1684 case elfcpp::R_SPARC_TLS_GD_CALL
:
1685 if (optimized_type
== tls::TLSOPT_NONE
)
1687 // Create a pair of GOT entries for the module index and
1688 // dtv-relative offset.
1689 Output_data_got
<size
, big_endian
>* got
1690 = target
->got_section(symtab
, layout
);
1691 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1692 got
->add_local_pair_with_rela(object
, r_sym
,
1693 lsym
.get_st_shndx(),
1695 target
->rela_dyn_section(layout
),
1697 elfcpp::R_SPARC_TLS_DTPMOD64
:
1698 elfcpp::R_SPARC_TLS_DTPMOD32
), 0);
1699 if (r_type
== elfcpp::R_SPARC_TLS_GD_CALL
)
1700 generate_tls_call(symtab
, layout
, target
);
1702 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
1703 unsupported_reloc_local(object
, r_type
);
1706 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
1707 case elfcpp::R_SPARC_TLS_LDM_LO10
:
1708 case elfcpp::R_SPARC_TLS_LDM_ADD
:
1709 case elfcpp::R_SPARC_TLS_LDM_CALL
:
1710 if (optimized_type
== tls::TLSOPT_NONE
)
1712 // Create a GOT entry for the module index.
1713 target
->got_mod_index_entry(symtab
, layout
, object
);
1715 if (r_type
== elfcpp::R_SPARC_TLS_LDM_CALL
)
1716 generate_tls_call(symtab
, layout
, target
);
1718 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
1719 unsupported_reloc_local(object
, r_type
);
1722 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
1723 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
1724 case elfcpp::R_SPARC_TLS_LDO_ADD
:
1727 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
1728 case elfcpp::R_SPARC_TLS_IE_LO10
:
1729 case elfcpp::R_SPARC_TLS_IE_LD
:
1730 case elfcpp::R_SPARC_TLS_IE_LDX
:
1731 layout
->set_has_static_tls();
1732 if (optimized_type
== tls::TLSOPT_NONE
)
1734 // Create a GOT entry for the tp-relative offset.
1735 Output_data_got
<size
, big_endian
>* got
1736 = target
->got_section(symtab
, layout
);
1737 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1739 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_TLS_OFFSET
))
1741 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1742 unsigned int off
= got
->add_constant(0);
1744 object
->set_local_got_offset(r_sym
, GOT_TYPE_TLS_OFFSET
,
1746 rela_dyn
->add_local_relative(object
, r_sym
,
1748 elfcpp::R_SPARC_TLS_TPOFF64
:
1749 elfcpp::R_SPARC_TLS_TPOFF32
),
1753 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
1754 unsupported_reloc_local(object
, r_type
);
1757 case elfcpp::R_SPARC_TLS_LE_HIX22
: // Local-exec
1758 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1759 layout
->set_has_static_tls();
1760 if (output_is_shared
)
1762 // We need to create a dynamic relocation.
1763 gold_assert(lsym
.get_st_type() != elfcpp::STT_SECTION
);
1764 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1765 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1766 rela_dyn
->add_local_relative(object
, r_sym
, r_type
,
1767 output_section
, data_shndx
,
1768 reloc
.get_r_offset(), 0);
1775 // These are relocations which should only be seen by the
1776 // dynamic linker, and should never be seen here.
1777 case elfcpp::R_SPARC_COPY
:
1778 case elfcpp::R_SPARC_GLOB_DAT
:
1779 case elfcpp::R_SPARC_JMP_SLOT
:
1780 case elfcpp::R_SPARC_RELATIVE
:
1781 case elfcpp::R_SPARC_TLS_DTPMOD64
:
1782 case elfcpp::R_SPARC_TLS_DTPMOD32
:
1783 case elfcpp::R_SPARC_TLS_DTPOFF64
:
1784 case elfcpp::R_SPARC_TLS_DTPOFF32
:
1785 case elfcpp::R_SPARC_TLS_TPOFF64
:
1786 case elfcpp::R_SPARC_TLS_TPOFF32
:
1787 gold_error(_("%s: unexpected reloc %u in object file"),
1788 object
->name().c_str(), r_type
);
1792 unsupported_reloc_local(object
, r_type
);
1797 // Report an unsupported relocation against a global symbol.
1799 template<int size
, bool big_endian
>
1801 Target_sparc
<size
, big_endian
>::Scan::unsupported_reloc_global(
1802 Sized_relobj
<size
, big_endian
>* object
,
1803 unsigned int r_type
,
1806 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
1807 object
->name().c_str(), r_type
, gsym
->demangled_name().c_str());
1810 // Scan a relocation for a global symbol.
1812 template<int size
, bool big_endian
>
1814 Target_sparc
<size
, big_endian
>::Scan::global(
1815 const General_options
& options
,
1816 Symbol_table
* symtab
,
1818 Target_sparc
<size
, big_endian
>* target
,
1819 Sized_relobj
<size
, big_endian
>* object
,
1820 unsigned int data_shndx
,
1821 Output_section
* output_section
,
1822 const elfcpp::Rela
<size
, big_endian
>& reloc
,
1823 unsigned int r_type
,
1826 unsigned int orig_r_type
= r_type
;
1831 case elfcpp::R_SPARC_NONE
:
1832 case elfcpp::R_SPARC_REGISTER
:
1833 case elfcpp::R_SPARC_GNU_VTINHERIT
:
1834 case elfcpp::R_SPARC_GNU_VTENTRY
:
1837 case elfcpp::R_SPARC_PLT64
:
1838 case elfcpp::R_SPARC_PLT32
:
1839 case elfcpp::R_SPARC_HIPLT22
:
1840 case elfcpp::R_SPARC_LOPLT10
:
1841 case elfcpp::R_SPARC_PCPLT32
:
1842 case elfcpp::R_SPARC_PCPLT22
:
1843 case elfcpp::R_SPARC_PCPLT10
:
1844 case elfcpp::R_SPARC_WPLT30
:
1845 // If the symbol is fully resolved, this is just a PC32 reloc.
1846 // Otherwise we need a PLT entry.
1847 if (gsym
->final_value_is_known())
1849 // If building a shared library, we can also skip the PLT entry
1850 // if the symbol is defined in the output file and is protected
1852 if (gsym
->is_defined()
1853 && !gsym
->is_from_dynobj()
1854 && !gsym
->is_preemptible())
1856 target
->make_plt_entry(symtab
, layout
, gsym
);
1859 case elfcpp::R_SPARC_DISP8
:
1860 case elfcpp::R_SPARC_DISP16
:
1861 case elfcpp::R_SPARC_DISP32
:
1862 case elfcpp::R_SPARC_DISP64
:
1863 case elfcpp::R_SPARC_PC_HH22
:
1864 case elfcpp::R_SPARC_PC_HM10
:
1865 case elfcpp::R_SPARC_PC_LM22
:
1866 case elfcpp::R_SPARC_PC10
:
1867 case elfcpp::R_SPARC_PC22
:
1868 case elfcpp::R_SPARC_WDISP30
:
1869 case elfcpp::R_SPARC_WDISP22
:
1870 case elfcpp::R_SPARC_WDISP19
:
1871 case elfcpp::R_SPARC_WDISP16
:
1873 if (gsym
->needs_plt_entry())
1874 target
->make_plt_entry(symtab
, layout
, gsym
);
1875 // Make a dynamic relocation if necessary.
1876 int flags
= Symbol::NON_PIC_REF
;
1877 if (gsym
->type() == elfcpp::STT_FUNC
)
1878 flags
|= Symbol::FUNCTION_CALL
;
1879 if (gsym
->needs_dynamic_reloc(flags
))
1881 if (target
->may_need_copy_reloc(gsym
))
1883 target
->copy_reloc(&options
, symtab
, layout
, object
,
1884 data_shndx
, output_section
, gsym
,
1889 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1890 rela_dyn
->add_global(gsym
, orig_r_type
, output_section
, object
,
1891 data_shndx
, reloc
.get_r_offset(),
1892 reloc
.get_r_addend());
1898 case elfcpp::R_SPARC_UA64
:
1899 case elfcpp::R_SPARC_64
:
1900 case elfcpp::R_SPARC_HIX22
:
1901 case elfcpp::R_SPARC_LOX10
:
1902 case elfcpp::R_SPARC_H44
:
1903 case elfcpp::R_SPARC_M44
:
1904 case elfcpp::R_SPARC_L44
:
1905 case elfcpp::R_SPARC_HH22
:
1906 case elfcpp::R_SPARC_HM10
:
1907 case elfcpp::R_SPARC_LM22
:
1908 case elfcpp::R_SPARC_HI22
:
1909 case elfcpp::R_SPARC_LO10
:
1910 case elfcpp::R_SPARC_OLO10
:
1911 case elfcpp::R_SPARC_UA32
:
1912 case elfcpp::R_SPARC_32
:
1913 case elfcpp::R_SPARC_UA16
:
1914 case elfcpp::R_SPARC_16
:
1915 case elfcpp::R_SPARC_11
:
1916 case elfcpp::R_SPARC_10
:
1917 case elfcpp::R_SPARC_8
:
1918 case elfcpp::R_SPARC_7
:
1919 case elfcpp::R_SPARC_6
:
1920 case elfcpp::R_SPARC_5
:
1922 // Make a PLT entry if necessary.
1923 if (gsym
->needs_plt_entry())
1925 target
->make_plt_entry(symtab
, layout
, gsym
);
1926 // Since this is not a PC-relative relocation, we may be
1927 // taking the address of a function. In that case we need to
1928 // set the entry in the dynamic symbol table to the address of
1930 if (gsym
->is_from_dynobj() && !parameters
->options().shared())
1931 gsym
->set_needs_dynsym_value();
1933 // Make a dynamic relocation if necessary.
1934 if (gsym
->needs_dynamic_reloc(Symbol::ABSOLUTE_REF
))
1936 if (target
->may_need_copy_reloc(gsym
))
1938 target
->copy_reloc(&options
, symtab
, layout
, object
,
1939 data_shndx
, output_section
, gsym
, reloc
);
1941 else if ((r_type
== elfcpp::R_SPARC_32
1942 || r_type
== elfcpp::R_SPARC_64
)
1943 && gsym
->can_use_relative_reloc(false))
1945 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1946 rela_dyn
->add_global_relative(gsym
, elfcpp::R_SPARC_RELATIVE
,
1947 output_section
, object
,
1948 data_shndx
, reloc
.get_r_offset(),
1949 reloc
.get_r_addend());
1953 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1955 if (gsym
->is_from_dynobj()
1956 || gsym
->is_undefined()
1957 || gsym
->is_preemptible())
1958 rela_dyn
->add_global(gsym
, orig_r_type
, output_section
,
1960 reloc
.get_r_offset(),
1961 reloc
.get_r_addend());
1963 rela_dyn
->add_global_relative(gsym
, orig_r_type
,
1964 output_section
, object
,
1966 reloc
.get_r_offset(),
1967 reloc
.get_r_addend());
1973 case elfcpp::R_SPARC_GOT10
:
1974 case elfcpp::R_SPARC_GOT13
:
1975 case elfcpp::R_SPARC_GOT22
:
1977 // The symbol requires a GOT entry.
1978 Output_data_got
<size
, big_endian
>* got
;
1980 got
= target
->got_section(symtab
, layout
);
1981 if (gsym
->final_value_is_known())
1982 got
->add_global(gsym
, GOT_TYPE_STANDARD
);
1985 // If this symbol is not fully resolved, we need to add a
1986 // dynamic relocation for it.
1987 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1988 if (gsym
->is_from_dynobj()
1989 || gsym
->is_undefined()
1990 || gsym
->is_preemptible())
1991 got
->add_global_with_rela(gsym
, GOT_TYPE_STANDARD
, rela_dyn
,
1992 elfcpp::R_SPARC_GLOB_DAT
);
1993 else if (!gsym
->has_got_offset(GOT_TYPE_STANDARD
))
1995 unsigned int off
= got
->add_constant(0);
1997 gsym
->set_got_offset(GOT_TYPE_STANDARD
, off
);
1998 rela_dyn
->add_global_relative(gsym
, elfcpp::R_SPARC_RELATIVE
,
2005 // These are initial tls relocs, which are expected when
2007 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
2008 case elfcpp::R_SPARC_TLS_GD_LO10
:
2009 case elfcpp::R_SPARC_TLS_GD_ADD
:
2010 case elfcpp::R_SPARC_TLS_GD_CALL
:
2011 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
2012 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2013 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2014 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2015 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
2016 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
2017 case elfcpp::R_SPARC_TLS_LDO_ADD
:
2018 case elfcpp::R_SPARC_TLS_LE_HIX22
:
2019 case elfcpp::R_SPARC_TLS_LE_LOX10
:
2020 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
2021 case elfcpp::R_SPARC_TLS_IE_LO10
:
2022 case elfcpp::R_SPARC_TLS_IE_LD
:
2023 case elfcpp::R_SPARC_TLS_IE_LDX
:
2025 const bool is_final
= gsym
->final_value_is_known();
2026 const tls::Tls_optimization optimized_type
2027 = optimize_tls_reloc(is_final
, r_type
);
2030 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
2031 case elfcpp::R_SPARC_TLS_GD_LO10
:
2032 case elfcpp::R_SPARC_TLS_GD_ADD
:
2033 case elfcpp::R_SPARC_TLS_GD_CALL
:
2034 if (optimized_type
== tls::TLSOPT_NONE
)
2036 // Create a pair of GOT entries for the module index and
2037 // dtv-relative offset.
2038 Output_data_got
<size
, big_endian
>* got
2039 = target
->got_section(symtab
, layout
);
2040 got
->add_global_pair_with_rela(gsym
, GOT_TYPE_TLS_PAIR
,
2041 target
->rela_dyn_section(layout
),
2043 elfcpp::R_SPARC_TLS_DTPMOD64
:
2044 elfcpp::R_SPARC_TLS_DTPMOD32
),
2046 elfcpp::R_SPARC_TLS_DTPOFF64
:
2047 elfcpp::R_SPARC_TLS_DTPOFF32
));
2049 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2050 if (r_type
== elfcpp::R_SPARC_TLS_GD_CALL
)
2051 generate_tls_call(symtab
, layout
, target
);
2053 else if (optimized_type
== tls::TLSOPT_TO_IE
)
2055 // Create a GOT entry for the tp-relative offset.
2056 Output_data_got
<size
, big_endian
>* got
2057 = target
->got_section(symtab
, layout
);
2058 got
->add_global_with_rela(gsym
, GOT_TYPE_TLS_OFFSET
,
2059 target
->rela_dyn_section(layout
),
2061 elfcpp::R_SPARC_TLS_TPOFF64
:
2062 elfcpp::R_SPARC_TLS_TPOFF32
));
2064 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
2065 unsupported_reloc_global(object
, r_type
, gsym
);
2068 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
2069 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2070 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2071 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2072 if (optimized_type
== tls::TLSOPT_NONE
)
2074 // Create a GOT entry for the module index.
2075 target
->got_mod_index_entry(symtab
, layout
, object
);
2077 if (r_type
== elfcpp::R_SPARC_TLS_LDM_CALL
)
2078 generate_tls_call(symtab
, layout
, target
);
2080 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
2081 unsupported_reloc_global(object
, r_type
, gsym
);
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
:
2089 case elfcpp::R_SPARC_TLS_LE_HIX22
:
2090 case elfcpp::R_SPARC_TLS_LE_LOX10
:
2091 layout
->set_has_static_tls();
2092 if (parameters
->options().shared())
2094 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2095 rela_dyn
->add_global_relative(gsym
, orig_r_type
,
2096 output_section
, object
,
2097 data_shndx
, reloc
.get_r_offset(),
2102 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
2103 case elfcpp::R_SPARC_TLS_IE_LO10
:
2104 case elfcpp::R_SPARC_TLS_IE_LD
:
2105 case elfcpp::R_SPARC_TLS_IE_LDX
:
2106 layout
->set_has_static_tls();
2107 if (optimized_type
== tls::TLSOPT_NONE
)
2109 // Create a GOT entry for the tp-relative offset.
2110 Output_data_got
<size
, big_endian
>* got
2111 = target
->got_section(symtab
, layout
);
2112 got
->add_global_with_rela(gsym
, GOT_TYPE_TLS_OFFSET
,
2113 target
->rela_dyn_section(layout
),
2115 elfcpp::R_SPARC_TLS_TPOFF64
:
2116 elfcpp::R_SPARC_TLS_TPOFF32
));
2118 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
2119 unsupported_reloc_global(object
, r_type
, gsym
);
2125 // These are relocations which should only be seen by the
2126 // dynamic linker, and should never be seen here.
2127 case elfcpp::R_SPARC_COPY
:
2128 case elfcpp::R_SPARC_GLOB_DAT
:
2129 case elfcpp::R_SPARC_JMP_SLOT
:
2130 case elfcpp::R_SPARC_RELATIVE
:
2131 case elfcpp::R_SPARC_TLS_DTPMOD64
:
2132 case elfcpp::R_SPARC_TLS_DTPMOD32
:
2133 case elfcpp::R_SPARC_TLS_DTPOFF64
:
2134 case elfcpp::R_SPARC_TLS_DTPOFF32
:
2135 case elfcpp::R_SPARC_TLS_TPOFF64
:
2136 case elfcpp::R_SPARC_TLS_TPOFF32
:
2137 gold_error(_("%s: unexpected reloc %u in object file"),
2138 object
->name().c_str(), r_type
);
2142 unsupported_reloc_global(object
, r_type
, gsym
);
2147 // Scan relocations for a section.
2149 template<int size
, bool big_endian
>
2151 Target_sparc
<size
, big_endian
>::scan_relocs(
2152 const General_options
& options
,
2153 Symbol_table
* symtab
,
2155 Sized_relobj
<size
, big_endian
>* object
,
2156 unsigned int data_shndx
,
2157 unsigned int sh_type
,
2158 const unsigned char* prelocs
,
2160 Output_section
* output_section
,
2161 bool needs_special_offset_handling
,
2162 size_t local_symbol_count
,
2163 const unsigned char* plocal_symbols
)
2165 typedef Target_sparc
<size
, big_endian
> Sparc
;
2166 typedef typename Target_sparc
<size
, big_endian
>::Scan Scan
;
2168 if (sh_type
== elfcpp::SHT_REL
)
2170 gold_error(_("%s: unsupported REL reloc section"),
2171 object
->name().c_str());
2175 gold::scan_relocs
<size
, big_endian
, Sparc
, elfcpp::SHT_RELA
, Scan
>(
2185 needs_special_offset_handling
,
2190 // Finalize the sections.
2192 template<int size
, bool big_endian
>
2194 Target_sparc
<size
, big_endian
>::do_finalize_sections(Layout
* layout
)
2196 // Fill in some more dynamic tags.
2197 Output_data_dynamic
* const odyn
= layout
->dynamic_data();
2200 if (this->plt_
!= NULL
)
2202 const Output_data
* od
= this->plt_
->rel_plt();
2203 odyn
->add_section_size(elfcpp::DT_PLTRELSZ
, od
);
2204 odyn
->add_section_address(elfcpp::DT_JMPREL
, od
);
2205 odyn
->add_constant(elfcpp::DT_PLTREL
, elfcpp::DT_RELA
);
2207 odyn
->add_section_address(elfcpp::DT_PLTGOT
, this->plt_
);
2210 if (this->rela_dyn_
!= NULL
)
2212 const Output_data
* od
= this->rela_dyn_
;
2213 odyn
->add_section_address(elfcpp::DT_RELA
, od
);
2214 odyn
->add_section_size(elfcpp::DT_RELASZ
, od
);
2215 odyn
->add_constant(elfcpp::DT_RELAENT
,
2216 elfcpp::Elf_sizes
<size
>::rela_size
);
2219 if (!parameters
->options().shared())
2221 // The value of the DT_DEBUG tag is filled in by the dynamic
2222 // linker at run time, and used by the debugger.
2223 odyn
->add_constant(elfcpp::DT_DEBUG
, 0);
2227 // Emit any relocs we saved in an attempt to avoid generating COPY
2229 if (this->copy_relocs_
== NULL
)
2231 if (this->copy_relocs_
->any_to_emit())
2233 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
2234 this->copy_relocs_
->emit(rela_dyn
);
2236 delete this->copy_relocs_
;
2237 this->copy_relocs_
= NULL
;
2240 // Perform a relocation.
2242 template<int size
, bool big_endian
>
2244 Target_sparc
<size
, big_endian
>::Relocate::relocate(
2245 const Relocate_info
<size
, big_endian
>* relinfo
,
2246 Target_sparc
* target
,
2248 const elfcpp::Rela
<size
, big_endian
>& rela
,
2249 unsigned int r_type
,
2250 const Sized_symbol
<size
>* gsym
,
2251 const Symbol_value
<size
>* psymval
,
2252 unsigned char* view
,
2253 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
,
2254 section_size_type view_size
)
2258 if (this->ignore_gd_add_
)
2260 if (r_type
!= elfcpp::R_SPARC_TLS_GD_ADD
)
2261 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2262 _("missing expected TLS relocation"));
2265 this->ignore_gd_add_
= false;
2270 typedef Sparc_relocate_functions
<size
, big_endian
> Reloc
;
2272 // Pick the value to use for symbols defined in shared objects.
2273 Symbol_value
<size
> symval
;
2275 && (gsym
->is_from_dynobj()
2276 || (parameters
->options().shared()
2277 && (gsym
->is_undefined() || gsym
->is_preemptible())))
2278 && gsym
->has_plt_offset())
2280 elfcpp::Elf_Xword value
;
2282 value
= target
->plt_section()->address() + gsym
->plt_offset();
2284 symval
.set_output_value(value
);
2289 const Sized_relobj
<size
, big_endian
>* object
= relinfo
->object
;
2290 const elfcpp::Elf_Xword addend
= rela
.get_r_addend();
2292 // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT
2293 // pointer points to the beginning, not the end, of the table.
2294 // So we just use the plain offset.
2295 bool have_got_offset
= false;
2296 unsigned int got_offset
= 0;
2299 case elfcpp::R_SPARC_GOT10
:
2300 case elfcpp::R_SPARC_GOT13
:
2301 case elfcpp::R_SPARC_GOT22
:
2304 gold_assert(gsym
->has_got_offset(GOT_TYPE_STANDARD
));
2305 got_offset
= gsym
->got_offset(GOT_TYPE_STANDARD
);
2309 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
2310 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
));
2311 got_offset
= object
->local_got_offset(r_sym
, GOT_TYPE_STANDARD
);
2313 have_got_offset
= true;
2322 case elfcpp::R_SPARC_NONE
:
2323 case elfcpp::R_SPARC_REGISTER
:
2324 case elfcpp::R_SPARC_GNU_VTINHERIT
:
2325 case elfcpp::R_SPARC_GNU_VTENTRY
:
2328 case elfcpp::R_SPARC_8
:
2329 Relocate_functions
<size
, big_endian
>::rela8(view
, object
,
2333 case elfcpp::R_SPARC_16
:
2334 Relocate_functions
<size
, big_endian
>::rela16(view
, object
,
2338 case elfcpp::R_SPARC_32
:
2339 if (!parameters
->options().output_is_position_independent())
2340 Relocate_functions
<size
, big_endian
>::rela32(view
, object
,
2344 case elfcpp::R_SPARC_DISP8
:
2345 Reloc::disp8(view
, object
, psymval
, addend
, address
);
2348 case elfcpp::R_SPARC_DISP16
:
2349 Reloc::disp16(view
, object
, psymval
, addend
, address
);
2352 case elfcpp::R_SPARC_DISP32
:
2353 Reloc::disp32(view
, object
, psymval
, addend
, address
);
2356 case elfcpp::R_SPARC_DISP64
:
2357 Reloc::disp64(view
, object
, psymval
, addend
, address
);
2360 case elfcpp::R_SPARC_WDISP30
:
2361 case elfcpp::R_SPARC_WPLT30
:
2362 Reloc::wdisp30(view
, object
, psymval
, addend
, address
);
2365 case elfcpp::R_SPARC_WDISP22
:
2366 Reloc::wdisp22(view
, object
, psymval
, addend
, address
);
2369 case elfcpp::R_SPARC_WDISP19
:
2370 Reloc::wdisp19(view
, object
, psymval
, addend
, address
);
2373 case elfcpp::R_SPARC_WDISP16
:
2374 Reloc::wdisp16(view
, object
, psymval
, addend
, address
);
2377 case elfcpp::R_SPARC_HI22
:
2378 Reloc::hi22(view
, object
, psymval
, addend
);
2381 case elfcpp::R_SPARC_22
:
2382 Reloc::rela32_22(view
, object
, psymval
, addend
);
2385 case elfcpp::R_SPARC_13
:
2386 Reloc::rela32_13(view
, object
, psymval
, addend
);
2389 case elfcpp::R_SPARC_LO10
:
2390 Reloc::lo10(view
, object
, psymval
, addend
);
2393 case elfcpp::R_SPARC_GOT10
:
2394 Reloc::lo10(view
, got_offset
, addend
);
2397 case elfcpp::R_SPARC_GOT13
:
2398 Reloc::rela32_13(view
, got_offset
, addend
);
2401 case elfcpp::R_SPARC_GOT22
:
2402 Reloc::hi22(view
, got_offset
, addend
);
2405 case elfcpp::R_SPARC_PC10
:
2406 Reloc::pc10(view
, object
, psymval
, addend
, address
);
2409 case elfcpp::R_SPARC_PC22
:
2410 Reloc::pc22(view
, object
, psymval
, addend
, address
);
2413 case elfcpp::R_SPARC_TLS_DTPOFF32
:
2414 case elfcpp::R_SPARC_UA32
:
2415 Reloc::ua32(view
, object
, psymval
, addend
);
2418 case elfcpp::R_SPARC_PLT64
:
2419 Relocate_functions
<size
, big_endian
>::rela64(view
, object
,
2423 case elfcpp::R_SPARC_PLT32
:
2424 Relocate_functions
<size
, big_endian
>::rela32(view
, object
,
2428 case elfcpp::R_SPARC_HIPLT22
:
2429 Reloc::hi22(view
, object
, psymval
, addend
);
2432 case elfcpp::R_SPARC_LOPLT10
:
2433 Reloc::lo10(view
, object
, psymval
, addend
);
2436 case elfcpp::R_SPARC_PCPLT32
:
2437 Reloc::disp32(view
, object
, psymval
, addend
, address
);
2440 case elfcpp::R_SPARC_PCPLT22
:
2441 Reloc::pcplt22(view
, object
, psymval
, addend
, address
);
2444 case elfcpp::R_SPARC_PCPLT10
:
2445 Reloc::lo10(view
, object
, psymval
, addend
, address
);
2448 case elfcpp::R_SPARC_64
:
2449 if (!parameters
->options().output_is_position_independent())
2450 Relocate_functions
<size
, big_endian
>::rela64(view
, object
,
2454 case elfcpp::R_SPARC_OLO10
:
2456 unsigned int addend2
= rela
.get_r_info() & 0xffffffff;
2457 addend2
= ((addend2
>> 8) ^ 0x800000) - 0x800000;
2458 Reloc::olo10(view
, object
, psymval
, addend
, addend2
);
2462 case elfcpp::R_SPARC_HH22
:
2463 Reloc::hh22(view
, object
, psymval
, addend
);
2466 case elfcpp::R_SPARC_PC_HH22
:
2467 Reloc::pc_hh22(view
, object
, psymval
, addend
, address
);
2470 case elfcpp::R_SPARC_HM10
:
2471 Reloc::hm10(view
, object
, psymval
, addend
);
2474 case elfcpp::R_SPARC_PC_HM10
:
2475 Reloc::pc_hm10(view
, object
, psymval
, addend
, address
);
2478 case elfcpp::R_SPARC_LM22
:
2479 Reloc::hi22(view
, object
, psymval
, addend
);
2482 case elfcpp::R_SPARC_PC_LM22
:
2483 Reloc::pcplt22(view
, object
, psymval
, addend
, address
);
2486 case elfcpp::R_SPARC_11
:
2487 Reloc::rela32_11(view
, object
, psymval
, addend
);
2490 case elfcpp::R_SPARC_10
:
2491 Reloc::rela32_10(view
, object
, psymval
, addend
);
2494 case elfcpp::R_SPARC_7
:
2495 Reloc::rela32_7(view
, object
, psymval
, addend
);
2498 case elfcpp::R_SPARC_6
:
2499 Reloc::rela32_6(view
, object
, psymval
, addend
);
2502 case elfcpp::R_SPARC_5
:
2503 Reloc::rela32_5(view
, object
, psymval
, addend
);
2506 case elfcpp::R_SPARC_HIX22
:
2507 Reloc::hix22(view
, object
, psymval
, addend
);
2510 case elfcpp::R_SPARC_LOX10
:
2511 Reloc::lox10(view
, object
, psymval
, addend
);
2514 case elfcpp::R_SPARC_H44
:
2515 Reloc::h44(view
, object
, psymval
, addend
);
2518 case elfcpp::R_SPARC_M44
:
2519 Reloc::m44(view
, object
, psymval
, addend
);
2522 case elfcpp::R_SPARC_L44
:
2523 Reloc::l44(view
, object
, psymval
, addend
);
2526 case elfcpp::R_SPARC_TLS_DTPOFF64
:
2527 case elfcpp::R_SPARC_UA64
:
2528 Reloc::ua64(view
, object
, psymval
, addend
);
2531 case elfcpp::R_SPARC_UA16
:
2532 Reloc::ua16(view
, object
, psymval
, addend
);
2535 case elfcpp::R_SPARC_TLS_GD_HI22
:
2536 case elfcpp::R_SPARC_TLS_GD_LO10
:
2537 case elfcpp::R_SPARC_TLS_GD_ADD
:
2538 case elfcpp::R_SPARC_TLS_GD_CALL
:
2539 case elfcpp::R_SPARC_TLS_LDM_HI22
:
2540 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2541 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2542 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2543 case elfcpp::R_SPARC_TLS_LDO_HIX22
:
2544 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
2545 case elfcpp::R_SPARC_TLS_LDO_ADD
:
2546 case elfcpp::R_SPARC_TLS_IE_HI22
:
2547 case elfcpp::R_SPARC_TLS_IE_LO10
:
2548 case elfcpp::R_SPARC_TLS_IE_LD
:
2549 case elfcpp::R_SPARC_TLS_IE_LDX
:
2550 case elfcpp::R_SPARC_TLS_LE_HIX22
:
2551 case elfcpp::R_SPARC_TLS_LE_LOX10
:
2552 this->relocate_tls(relinfo
, target
, relnum
, rela
,
2553 r_type
, gsym
, psymval
, view
,
2554 address
, view_size
);
2557 case elfcpp::R_SPARC_COPY
:
2558 case elfcpp::R_SPARC_GLOB_DAT
:
2559 case elfcpp::R_SPARC_JMP_SLOT
:
2560 case elfcpp::R_SPARC_RELATIVE
:
2561 // These are outstanding tls relocs, which are unexpected when
2563 case elfcpp::R_SPARC_TLS_DTPMOD64
:
2564 case elfcpp::R_SPARC_TLS_DTPMOD32
:
2565 case elfcpp::R_SPARC_TLS_TPOFF64
:
2566 case elfcpp::R_SPARC_TLS_TPOFF32
:
2567 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2568 _("unexpected reloc %u in object file"),
2573 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2574 _("unsupported reloc %u"),
2582 // Perform a TLS relocation.
2584 template<int size
, bool big_endian
>
2586 Target_sparc
<size
, big_endian
>::Relocate::relocate_tls(
2587 const Relocate_info
<size
, big_endian
>* relinfo
,
2588 Target_sparc
<size
, big_endian
>* target
,
2590 const elfcpp::Rela
<size
, big_endian
>& rela
,
2591 unsigned int r_type
,
2592 const Sized_symbol
<size
>* gsym
,
2593 const Symbol_value
<size
>* psymval
,
2594 unsigned char* view
,
2595 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
,
2598 Output_segment
* tls_segment
= relinfo
->layout
->tls_segment();
2599 typedef Sparc_relocate_functions
<size
, big_endian
> Reloc
;
2600 const Sized_relobj
<size
, big_endian
>* object
= relinfo
->object
;
2601 typedef typename
elfcpp::Swap
<32, true>::Valtype Insntype
;
2603 const elfcpp::Elf_Xword addend
= rela
.get_r_addend();
2604 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
= psymval
->value(object
, 0);
2606 const bool is_final
=
2608 ? !parameters
->options().output_is_position_independent()
2609 : gsym
->final_value_is_known());
2610 const tls::Tls_optimization optimized_type
2611 = optimize_tls_reloc(is_final
, r_type
);
2615 case elfcpp::R_SPARC_TLS_GD_HI22
:
2616 case elfcpp::R_SPARC_TLS_GD_LO10
:
2617 case elfcpp::R_SPARC_TLS_GD_ADD
:
2618 case elfcpp::R_SPARC_TLS_GD_CALL
:
2619 if (optimized_type
== tls::TLSOPT_TO_LE
)
2621 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2624 value
-= tls_segment
->memsz();
2628 case elfcpp::R_SPARC_TLS_GD_HI22
:
2629 // TLS_GD_HI22 --> TLS_LE_HIX22
2630 Reloc::hix22(view
, value
, addend
);
2633 case elfcpp::R_SPARC_TLS_GD_LO10
:
2634 // TLS_GD_LO10 --> TLS_LE_LOX10
2635 Reloc::lox10(view
, value
, addend
);
2638 case elfcpp::R_SPARC_TLS_GD_ADD
:
2639 // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
2640 val
= elfcpp::Swap
<32, true>::readval(wv
);
2641 val
= (val
& ~0x7c000) | 0x1c000;
2642 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2644 case elfcpp::R_SPARC_TLS_GD_CALL
:
2645 // call __tls_get_addr --> nop
2646 elfcpp::Swap
<32, true>::writeval(wv
, sparc_nop
);
2653 unsigned int got_type
= (optimized_type
== tls::TLSOPT_TO_IE
2654 ? GOT_TYPE_TLS_OFFSET
2655 : GOT_TYPE_TLS_PAIR
);
2658 gold_assert(gsym
->has_got_offset(got_type
));
2659 value
= gsym
->got_offset(got_type
);
2663 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
2664 gold_assert(object
->local_has_got_offset(r_sym
, got_type
));
2665 value
= object
->local_got_offset(r_sym
, got_type
);
2667 if (optimized_type
== tls::TLSOPT_TO_IE
)
2669 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2674 case elfcpp::R_SPARC_TLS_GD_HI22
:
2675 // TLS_GD_HI22 --> TLS_IE_HI22
2676 Reloc::hi22(view
, value
, addend
);
2679 case elfcpp::R_SPARC_TLS_GD_LO10
:
2680 // TLS_GD_LO10 --> TLS_IE_LO10
2681 Reloc::lo10(view
, value
, addend
);
2684 case elfcpp::R_SPARC_TLS_GD_ADD
:
2685 // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
2686 val
= elfcpp::Swap
<32, true>::readval(wv
);
2693 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2696 case elfcpp::R_SPARC_TLS_GD_CALL
:
2697 // The compiler can put the TLS_GD_ADD instruction
2698 // into the delay slot of the call. If so, we need
2699 // to transpose the two instructions so that the
2700 // the new sequence works properly.
2702 // The test we use is if the instruction in the
2703 // delay slot is an add with destination register
2705 val
= elfcpp::Swap
<32, true>::readval(wv
+ 1);
2706 if ((val
& 0x81f80000) == 0x80000000
2707 && ((val
>> 25) & 0x1f) == 0x8)
2714 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2717 this->ignore_gd_add_
= true;
2720 // call __tls_get_addr --> add %g7, %o0, %o0
2721 elfcpp::Swap
<32, true>::writeval(wv
, 0x9001c008);
2726 else if (optimized_type
== tls::TLSOPT_NONE
)
2730 case elfcpp::R_SPARC_TLS_GD_HI22
:
2731 Reloc::hi22(view
, value
, addend
);
2733 case elfcpp::R_SPARC_TLS_GD_LO10
:
2734 Reloc::lo10(view
, value
, addend
);
2736 case elfcpp::R_SPARC_TLS_GD_ADD
:
2738 case elfcpp::R_SPARC_TLS_GD_CALL
:
2740 Symbol_value
<size
> symval
;
2741 elfcpp::Elf_Xword value
;
2744 tsym
= target
->tls_get_addr_sym_
;
2746 value
= (target
->plt_section()->address() +
2747 tsym
->plt_offset());
2748 symval
.set_output_value(value
);
2749 Reloc::wdisp30(view
, object
, &symval
, addend
, address
);
2756 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2757 _("unsupported reloc %u"),
2761 case elfcpp::R_SPARC_TLS_LDM_HI22
:
2762 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2763 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2764 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2765 if (optimized_type
== tls::TLSOPT_TO_LE
)
2767 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2771 case elfcpp::R_SPARC_TLS_LDM_HI22
:
2772 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2773 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2774 elfcpp::Swap
<32, true>::writeval(wv
, sparc_nop
);
2777 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2778 elfcpp::Swap
<32, true>::writeval(wv
, sparc_mov_g0_o0
);
2783 else if (optimized_type
== tls::TLSOPT_NONE
)
2785 // Relocate the field with the offset of the GOT entry for
2786 // the module index.
2787 unsigned int got_offset
;
2789 got_offset
= target
->got_mod_index_entry(NULL
, NULL
, NULL
);
2792 case elfcpp::R_SPARC_TLS_LDM_HI22
:
2793 Reloc::hi22(view
, got_offset
, addend
);
2795 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2796 Reloc::lo10(view
, got_offset
, addend
);
2798 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2800 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2802 Symbol_value
<size
> symval
;
2803 elfcpp::Elf_Xword value
;
2806 tsym
= target
->tls_get_addr_sym_
;
2808 value
= (target
->plt_section()->address() +
2809 tsym
->plt_offset());
2810 symval
.set_output_value(value
);
2811 Reloc::wdisp30(view
, object
, &symval
, addend
, address
);
2817 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2818 _("unsupported reloc %u"),
2822 // These relocs can appear in debugging sections, in which case
2823 // we won't see the TLS_LDM relocs. The local_dynamic_type
2824 // field tells us this.
2825 case elfcpp::R_SPARC_TLS_LDO_HIX22
:
2826 if (optimized_type
== tls::TLSOPT_TO_LE
)
2828 value
-= tls_segment
->memsz();
2829 Reloc::hix22(view
, value
, addend
);
2832 Reloc::ldo_hix22(view
, value
, addend
);
2834 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
2835 if (optimized_type
== tls::TLSOPT_TO_LE
)
2837 value
-= tls_segment
->memsz();
2838 Reloc::lox10(view
, value
, addend
);
2841 Reloc::ldo_lox10(view
, value
, addend
);
2843 case elfcpp::R_SPARC_TLS_LDO_ADD
:
2844 if (optimized_type
== tls::TLSOPT_TO_LE
)
2846 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2849 // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
2850 val
= elfcpp::Swap
<32, true>::readval(wv
);
2851 val
= (val
& ~0x7c000) | 0x1c000;
2852 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2856 // When optimizing IE --> LE, the only relocation that is handled
2857 // differently is R_SPARC_TLS_IE_LD, it is rewritten from
2858 // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
2859 // rs2 and rd are the same.
2860 case elfcpp::R_SPARC_TLS_IE_LD
:
2861 case elfcpp::R_SPARC_TLS_IE_LDX
:
2862 if (optimized_type
== tls::TLSOPT_TO_LE
)
2864 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2865 Insntype val
= elfcpp::Swap
<32, true>::readval(wv
);
2866 Insntype rs2
= val
& 0x1f;
2867 Insntype rd
= (val
>> 25) & 0x1f;
2872 val
= sparc_mov
| (val
& 0x3e00001f);
2874 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2878 case elfcpp::R_SPARC_TLS_IE_HI22
:
2879 case elfcpp::R_SPARC_TLS_IE_LO10
:
2880 if (optimized_type
== tls::TLSOPT_TO_LE
)
2882 value
-= tls_segment
->memsz();
2885 case elfcpp::R_SPARC_TLS_IE_HI22
:
2886 // IE_HI22 --> LE_HIX22
2887 Reloc::hix22(view
, value
, addend
);
2889 case elfcpp::R_SPARC_TLS_IE_LO10
:
2890 // IE_LO10 --> LE_LOX10
2891 Reloc::lox10(view
, value
, addend
);
2896 else if (optimized_type
== tls::TLSOPT_NONE
)
2898 // Relocate the field with the offset of the GOT entry for
2899 // the tp-relative offset of the symbol.
2902 gold_assert(gsym
->has_got_offset(GOT_TYPE_TLS_OFFSET
));
2903 value
= gsym
->got_offset(GOT_TYPE_TLS_OFFSET
);
2907 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
2908 gold_assert(object
->local_has_got_offset(r_sym
,
2909 GOT_TYPE_TLS_OFFSET
));
2910 value
= object
->local_got_offset(r_sym
,
2911 GOT_TYPE_TLS_OFFSET
);
2915 case elfcpp::R_SPARC_TLS_IE_HI22
:
2916 Reloc::hi22(view
, value
, addend
);
2918 case elfcpp::R_SPARC_TLS_IE_LO10
:
2919 Reloc::lo10(view
, value
, addend
);
2924 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2925 _("unsupported reloc %u"),
2929 case elfcpp::R_SPARC_TLS_LE_HIX22
:
2930 // If we're creating a shared library, a dynamic relocation will
2931 // have been created for this location, so do not apply it now.
2932 if (!parameters
->options().shared())
2934 value
-= tls_segment
->memsz();
2935 Reloc::hix22(view
, value
, addend
);
2939 case elfcpp::R_SPARC_TLS_LE_LOX10
:
2940 // If we're creating a shared library, a dynamic relocation will
2941 // have been created for this location, so do not apply it now.
2942 if (!parameters
->options().shared())
2944 value
-= tls_segment
->memsz();
2945 Reloc::lox10(view
, value
, addend
);
2951 // Relocate section data.
2953 template<int size
, bool big_endian
>
2955 Target_sparc
<size
, big_endian
>::relocate_section(
2956 const Relocate_info
<size
, big_endian
>* relinfo
,
2957 unsigned int sh_type
,
2958 const unsigned char* prelocs
,
2960 Output_section
* output_section
,
2961 bool needs_special_offset_handling
,
2962 unsigned char* view
,
2963 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
,
2964 section_size_type view_size
)
2966 typedef Target_sparc
<size
, big_endian
> Sparc
;
2967 typedef typename Target_sparc
<size
, big_endian
>::Relocate Sparc_relocate
;
2969 gold_assert(sh_type
== elfcpp::SHT_RELA
);
2971 gold::relocate_section
<size
, big_endian
, Sparc
, elfcpp::SHT_RELA
,
2978 needs_special_offset_handling
,
2984 // Return the size of a relocation while scanning during a relocatable
2987 template<int size
, bool big_endian
>
2989 Target_sparc
<size
, big_endian
>::Relocatable_size_for_reloc::get_size_for_reloc(
2993 // We are always SHT_RELA, so we should never get here.
2998 // Scan the relocs during a relocatable link.
3000 template<int size
, bool big_endian
>
3002 Target_sparc
<size
, big_endian
>::scan_relocatable_relocs(
3003 const General_options
& options
,
3004 Symbol_table
* symtab
,
3006 Sized_relobj
<size
, big_endian
>* object
,
3007 unsigned int data_shndx
,
3008 unsigned int sh_type
,
3009 const unsigned char* prelocs
,
3011 Output_section
* output_section
,
3012 bool needs_special_offset_handling
,
3013 size_t local_symbol_count
,
3014 const unsigned char* plocal_symbols
,
3015 Relocatable_relocs
* rr
)
3017 gold_assert(sh_type
== elfcpp::SHT_RELA
);
3019 typedef gold::Default_scan_relocatable_relocs
<elfcpp::SHT_RELA
,
3020 Relocatable_size_for_reloc
> Scan_relocatable_relocs
;
3022 gold::scan_relocatable_relocs
<size
, big_endian
, elfcpp::SHT_RELA
,
3023 Scan_relocatable_relocs
>(
3032 needs_special_offset_handling
,
3038 // Relocate a section during a relocatable link.
3040 template<int size
, bool big_endian
>
3042 Target_sparc
<size
, big_endian
>::relocate_for_relocatable(
3043 const Relocate_info
<size
, big_endian
>* relinfo
,
3044 unsigned int sh_type
,
3045 const unsigned char* prelocs
,
3047 Output_section
* output_section
,
3048 off_t offset_in_output_section
,
3049 const Relocatable_relocs
* rr
,
3050 unsigned char* view
,
3051 typename
elfcpp::Elf_types
<size
>::Elf_Addr view_address
,
3052 section_size_type view_size
,
3053 unsigned char* reloc_view
,
3054 section_size_type reloc_view_size
)
3056 gold_assert(sh_type
== elfcpp::SHT_RELA
);
3058 gold::relocate_for_relocatable
<size
, big_endian
, elfcpp::SHT_RELA
>(
3063 offset_in_output_section
,
3072 // Return the value to use for a dynamic which requires special
3073 // treatment. This is how we support equality comparisons of function
3074 // pointers across shared library boundaries, as described in the
3075 // processor specific ABI supplement.
3077 template<int size
, bool big_endian
>
3079 Target_sparc
<size
, big_endian
>::do_dynsym_value(const Symbol
* gsym
) const
3081 gold_assert(gsym
->is_from_dynobj() && gsym
->has_plt_offset());
3082 return this->plt_section()->address() + gsym
->plt_offset();
3085 // The selector for sparc object files.
3087 template<int size
, bool big_endian
>
3088 class Target_selector_sparc
: public Target_selector
3091 Target_selector_sparc()
3092 : Target_selector(elfcpp::EM_NONE
, size
, big_endian
,
3093 (size
== 64 ? "elf64-sparc" : "elf32-sparc"))
3096 Target
* instantiated_target_
;
3098 Target
* do_recognize(int machine
, int, int)
3103 if (machine
!= elfcpp::EM_SPARCV9
)
3108 if (machine
!= elfcpp::EM_SPARC
3109 && machine
!= elfcpp::EM_SPARC32PLUS
)
3117 return do_instantiate_target();
3120 Target
* do_instantiate_target()
3122 if (this->instantiated_target_
== NULL
)
3123 this->instantiated_target_
= new Target_sparc
<size
, big_endian
>();
3124 return this->instantiated_target_
;
3128 Target_selector_sparc
<32, true> target_selector_sparc32
;
3129 Target_selector_sparc
<64, true> target_selector_sparc64
;
3131 } // End anonymous namespace.