1 // sparc.cc -- sparc target support for gold.
3 // Copyright 2008, 2009 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"
37 #include "copy-relocs.h"
39 #include "target-reloc.h"
40 #include "target-select.h"
49 template<int size
, bool big_endian
>
50 class Output_data_plt_sparc
;
52 template<int size
, bool big_endian
>
53 class Target_sparc
: public Sized_target
<size
, big_endian
>
56 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Reloc_section
;
59 : Sized_target
<size
, big_endian
>(&sparc_info
),
60 got_(NULL
), plt_(NULL
), rela_dyn_(NULL
),
61 copy_relocs_(elfcpp::R_SPARC_COPY
), dynbss_(NULL
),
62 got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL
)
66 // Process the relocations to determine unreferenced sections for
67 // garbage collection.
69 gc_process_relocs(const General_options
& options
,
72 Sized_relobj
<size
, big_endian
>* object
,
73 unsigned int data_shndx
,
75 const unsigned char* prelocs
,
77 Output_section
* output_section
,
78 bool needs_special_offset_handling
,
79 size_t local_symbol_count
,
80 const unsigned char* plocal_symbols
);
82 // Scan the relocations to look for symbol adjustments.
84 scan_relocs(const General_options
& options
,
87 Sized_relobj
<size
, big_endian
>* object
,
88 unsigned int data_shndx
,
90 const unsigned char* prelocs
,
92 Output_section
* output_section
,
93 bool needs_special_offset_handling
,
94 size_t local_symbol_count
,
95 const unsigned char* plocal_symbols
);
96 // Finalize the sections.
98 do_finalize_sections(Layout
*);
100 // Return the value to use for a dynamic which requires special
103 do_dynsym_value(const Symbol
*) const;
105 // Relocate a section.
107 relocate_section(const Relocate_info
<size
, big_endian
>*,
108 unsigned int sh_type
,
109 const unsigned char* prelocs
,
111 Output_section
* output_section
,
112 bool needs_special_offset_handling
,
114 typename
elfcpp::Elf_types
<size
>::Elf_Addr view_address
,
115 section_size_type view_size
);
117 // Scan the relocs during a relocatable link.
119 scan_relocatable_relocs(const General_options
& options
,
120 Symbol_table
* symtab
,
122 Sized_relobj
<size
, big_endian
>* object
,
123 unsigned int data_shndx
,
124 unsigned int sh_type
,
125 const unsigned char* prelocs
,
127 Output_section
* output_section
,
128 bool needs_special_offset_handling
,
129 size_t local_symbol_count
,
130 const unsigned char* plocal_symbols
,
131 Relocatable_relocs
*);
133 // Relocate a section during a relocatable link.
135 relocate_for_relocatable(const Relocate_info
<size
, big_endian
>*,
136 unsigned int sh_type
,
137 const unsigned char* prelocs
,
139 Output_section
* output_section
,
140 off_t offset_in_output_section
,
141 const Relocatable_relocs
*,
143 typename
elfcpp::Elf_types
<size
>::Elf_Addr view_address
,
144 section_size_type view_size
,
145 unsigned char* reloc_view
,
146 section_size_type reloc_view_size
);
147 // Return whether SYM is defined by the ABI.
149 do_is_defined_by_abi(const Symbol
* sym
) const
151 // XXX Really need to support this better...
152 if (sym
->type() == elfcpp::STT_SPARC_REGISTER
)
155 return strcmp(sym
->name(), "___tls_get_addr") == 0;
158 // Return whether there is a GOT section.
160 has_got_section() const
161 { return this->got_
!= NULL
; }
163 // Return the size of the GOT section.
167 gold_assert(this->got_
!= NULL
);
168 return this->got_
->data_size();
173 // The class which scans relocations.
178 : issued_non_pic_error_(false)
182 local(const General_options
& options
, Symbol_table
* symtab
,
183 Layout
* layout
, Target_sparc
* target
,
184 Sized_relobj
<size
, big_endian
>* object
,
185 unsigned int data_shndx
,
186 Output_section
* output_section
,
187 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
188 const elfcpp::Sym
<size
, big_endian
>& lsym
);
191 global(const General_options
& options
, Symbol_table
* symtab
,
192 Layout
* layout
, Target_sparc
* target
,
193 Sized_relobj
<size
, big_endian
>* object
,
194 unsigned int data_shndx
,
195 Output_section
* output_section
,
196 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
201 unsupported_reloc_local(Sized_relobj
<size
, big_endian
>*,
202 unsigned int r_type
);
205 unsupported_reloc_global(Sized_relobj
<size
, big_endian
>*,
206 unsigned int r_type
, Symbol
*);
209 generate_tls_call(Symbol_table
* symtab
, Layout
* layout
,
210 Target_sparc
* target
);
213 check_non_pic(Relobj
*, unsigned int r_type
);
215 // Whether we have issued an error about a non-PIC compilation.
216 bool issued_non_pic_error_
;
219 // The class which implements relocation.
224 : ignore_gd_add_(false)
229 if (this->ignore_gd_add_
)
231 // FIXME: This needs to specify the location somehow.
232 gold_error(_("missing expected TLS relocation"));
236 // Do a relocation. Return false if the caller should not issue
237 // any warnings about this relocation.
239 relocate(const Relocate_info
<size
, big_endian
>*, Target_sparc
*,
240 Output_section
*, size_t relnum
,
241 const elfcpp::Rela
<size
, big_endian
>&,
242 unsigned int r_type
, const Sized_symbol
<size
>*,
243 const Symbol_value
<size
>*,
245 typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
249 // Do a TLS relocation.
251 relocate_tls(const Relocate_info
<size
, big_endian
>*, Target_sparc
* target
,
252 size_t relnum
, const elfcpp::Rela
<size
, big_endian
>&,
253 unsigned int r_type
, const Sized_symbol
<size
>*,
254 const Symbol_value
<size
>*,
256 typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
259 // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD
263 // A class which returns the size required for a relocation type,
264 // used while scanning relocs during a relocatable link.
265 class Relocatable_size_for_reloc
269 get_size_for_reloc(unsigned int, Relobj
*);
272 // Get the GOT section, creating it if necessary.
273 Output_data_got
<size
, big_endian
>*
274 got_section(Symbol_table
*, Layout
*);
276 // Create a PLT entry for a global symbol.
278 make_plt_entry(Symbol_table
*, Layout
*, Symbol
*);
280 // Create a GOT entry for the TLS module index.
282 got_mod_index_entry(Symbol_table
* symtab
, Layout
* layout
,
283 Sized_relobj
<size
, big_endian
>* object
);
285 // Return the gsym for "__tls_get_addr". Cache if not already
288 tls_get_addr_sym(Symbol_table
* symtab
)
290 if (!this->tls_get_addr_sym_
)
291 this->tls_get_addr_sym_
= symtab
->lookup("__tls_get_addr", NULL
);
292 gold_assert(this->tls_get_addr_sym_
);
293 return this->tls_get_addr_sym_
;
296 // Get the PLT section.
297 const Output_data_plt_sparc
<size
, big_endian
>*
300 gold_assert(this->plt_
!= NULL
);
304 // Get the dynamic reloc section, creating it if necessary.
306 rela_dyn_section(Layout
*);
308 // Copy a relocation against a global symbol.
310 copy_reloc(Symbol_table
* symtab
, Layout
* layout
,
311 Sized_relobj
<size
, big_endian
>* object
,
312 unsigned int shndx
, Output_section
* output_section
,
313 Symbol
* sym
, const elfcpp::Rela
<size
, big_endian
>& reloc
)
315 this->copy_relocs_
.copy_reloc(symtab
, layout
,
316 symtab
->get_sized_symbol
<size
>(sym
),
317 object
, shndx
, output_section
,
318 reloc
, this->rela_dyn_section(layout
));
321 // Information about this specific target which we pass to the
322 // general Target structure.
323 static Target::Target_info sparc_info
;
325 // The types of GOT entries needed for this platform.
328 GOT_TYPE_STANDARD
= 0, // GOT entry for a regular symbol
329 GOT_TYPE_TLS_OFFSET
= 1, // GOT entry for TLS offset
330 GOT_TYPE_TLS_PAIR
= 2, // GOT entry for TLS module/offset pair
334 Output_data_got
<size
, big_endian
>* got_
;
336 Output_data_plt_sparc
<size
, big_endian
>* plt_
;
337 // The dynamic reloc section.
338 Reloc_section
* rela_dyn_
;
339 // Relocs saved to avoid a COPY reloc.
340 Copy_relocs
<elfcpp::SHT_RELA
, size
, big_endian
> copy_relocs_
;
341 // Space for variables copied with a COPY reloc.
342 Output_data_space
* dynbss_
;
343 // Offset of the GOT entry for the TLS module index;
344 unsigned int got_mod_index_offset_
;
345 // Cached pointer to __tls_get_addr symbol
346 Symbol
* tls_get_addr_sym_
;
350 Target::Target_info Target_sparc
<32, true>::sparc_info
=
353 true, // is_big_endian
354 elfcpp::EM_SPARC
, // machine_code
355 false, // has_make_symbol
356 false, // has_resolve
357 false, // has_code_fill
358 true, // is_default_stack_executable
360 "/usr/lib/ld.so.1", // dynamic_linker
361 0x00010000, // default_text_segment_address
362 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
363 8 * 1024, // common_pagesize (overridable by -z common-page-size)
364 elfcpp::SHN_UNDEF
, // small_common_shndx
365 elfcpp::SHN_UNDEF
, // large_common_shndx
366 0, // small_common_section_flags
367 0 // large_common_section_flags
371 Target::Target_info Target_sparc
<64, true>::sparc_info
=
374 true, // is_big_endian
375 elfcpp::EM_SPARCV9
, // machine_code
376 false, // has_make_symbol
377 false, // has_resolve
378 false, // has_code_fill
379 true, // is_default_stack_executable
381 "/usr/lib/sparcv9/ld.so.1", // dynamic_linker
382 0x100000, // default_text_segment_address
383 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
384 8 * 1024, // common_pagesize (overridable by -z common-page-size)
385 elfcpp::SHN_UNDEF
, // small_common_shndx
386 elfcpp::SHN_UNDEF
, // large_common_shndx
387 0, // small_common_section_flags
388 0 // large_common_section_flags
391 // We have to take care here, even when operating in little-endian
392 // mode, sparc instructions are still big endian.
393 template<int size
, bool big_endian
>
394 class Sparc_relocate_functions
397 // Do a simple relocation with the addend in the relocation.
398 template<int valsize
>
400 rela(unsigned char* view
,
401 unsigned int right_shift
,
402 typename
elfcpp::Elf_types
<valsize
>::Elf_Addr dst_mask
,
403 typename
elfcpp::Swap
<size
, big_endian
>::Valtype value
,
404 typename
elfcpp::Swap
<size
, big_endian
>::Valtype addend
)
406 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
407 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
408 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
409 Valtype reloc
= ((value
+ addend
) >> right_shift
);
414 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
417 // Do a simple relocation using a symbol value with the addend in
419 template<int valsize
>
421 rela(unsigned char* view
,
422 unsigned int right_shift
,
423 typename
elfcpp::Elf_types
<valsize
>::Elf_Addr dst_mask
,
424 const Sized_relobj
<size
, big_endian
>* object
,
425 const Symbol_value
<size
>* psymval
,
426 typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype addend
)
428 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
429 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
430 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
431 Valtype reloc
= (psymval
->value(object
, addend
) >> right_shift
);
436 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
439 // Do a simple relocation using a symbol value with the addend in
440 // the relocation, unaligned.
441 template<int valsize
>
443 rela_ua(unsigned char* view
,
444 unsigned int right_shift
, elfcpp::Elf_Xword dst_mask
,
445 const Sized_relobj
<size
, big_endian
>* object
,
446 const Symbol_value
<size
>* psymval
,
447 typename
elfcpp::Swap
<size
, big_endian
>::Valtype addend
)
449 typedef typename
elfcpp::Swap_unaligned
<valsize
,
450 big_endian
>::Valtype Valtype
;
451 unsigned char* wv
= view
;
452 Valtype val
= elfcpp::Swap_unaligned
<valsize
, big_endian
>::readval(wv
);
453 Valtype reloc
= (psymval
->value(object
, addend
) >> right_shift
);
458 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
461 // Do a simple PC relative relocation with a Symbol_value with the
462 // addend in the relocation.
463 template<int valsize
>
465 pcrela(unsigned char* view
,
466 unsigned int right_shift
,
467 typename
elfcpp::Elf_types
<valsize
>::Elf_Addr dst_mask
,
468 const Sized_relobj
<size
, big_endian
>* object
,
469 const Symbol_value
<size
>* psymval
,
470 typename
elfcpp::Swap
<size
, big_endian
>::Valtype addend
,
471 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
473 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
474 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
475 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
476 Valtype reloc
= ((psymval
->value(object
, addend
) - address
)
482 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
485 template<int valsize
>
487 pcrela_unaligned(unsigned char* view
,
488 const Sized_relobj
<size
, big_endian
>* object
,
489 const Symbol_value
<size
>* psymval
,
490 typename
elfcpp::Swap
<size
, big_endian
>::Valtype addend
,
491 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
493 typedef typename
elfcpp::Swap_unaligned
<valsize
,
494 big_endian
>::Valtype Valtype
;
495 unsigned char* wv
= view
;
496 Valtype reloc
= (psymval
->value(object
, addend
) - address
);
498 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(wv
, reloc
);
501 typedef Sparc_relocate_functions
<size
, big_endian
> This
;
502 typedef Sparc_relocate_functions
<size
, true> This_insn
;
505 // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
507 wdisp30(unsigned char* view
,
508 const Sized_relobj
<size
, big_endian
>* object
,
509 const Symbol_value
<size
>* psymval
,
510 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
511 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
513 This_insn::template pcrela
<32>(view
, 2, 0x3fffffff, object
,
514 psymval
, addend
, address
);
517 // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
519 wdisp22(unsigned char* view
,
520 const Sized_relobj
<size
, big_endian
>* object
,
521 const Symbol_value
<size
>* psymval
,
522 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
523 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
525 This_insn::template pcrela
<32>(view
, 2, 0x003fffff, object
,
526 psymval
, addend
, address
);
529 // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
531 wdisp19(unsigned char* view
,
532 const Sized_relobj
<size
, big_endian
>* object
,
533 const Symbol_value
<size
>* psymval
,
534 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
535 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
537 This_insn::template pcrela
<32>(view
, 2, 0x0007ffff, object
,
538 psymval
, addend
, address
);
541 // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
543 wdisp16(unsigned char* view
,
544 const Sized_relobj
<size
, big_endian
>* object
,
545 const Symbol_value
<size
>* psymval
,
546 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
547 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
549 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
550 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
551 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
552 Valtype reloc
= ((psymval
->value(object
, addend
) - address
)
555 // The relocation value is split between the low 14 bits,
557 val
&= ~((0x3 << 20) | 0x3fff);
558 reloc
= (((reloc
& 0xc000) << (20 - 14))
559 | (reloc
& 0x3ffff));
561 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
564 // R_SPARC_PC22: (Symbol + Addend - Address) >> 10
566 pc22(unsigned char* view
,
567 const Sized_relobj
<size
, big_endian
>* object
,
568 const Symbol_value
<size
>* psymval
,
569 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
570 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
572 This_insn::template pcrela
<32>(view
, 10, 0x003fffff, object
,
573 psymval
, addend
, address
);
576 // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
578 pc10(unsigned char* view
,
579 const Sized_relobj
<size
, big_endian
>* object
,
580 const Symbol_value
<size
>* psymval
,
581 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
582 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
584 This_insn::template pcrela
<32>(view
, 0, 0x000003ff, object
,
585 psymval
, addend
, address
);
588 // R_SPARC_HI22: (Symbol + Addend) >> 10
590 hi22(unsigned char* view
,
591 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
592 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
594 This_insn::template rela
<32>(view
, 10, 0x003fffff, value
, addend
);
597 // R_SPARC_HI22: (Symbol + Addend) >> 10
599 hi22(unsigned char* view
,
600 const Sized_relobj
<size
, big_endian
>* object
,
601 const Symbol_value
<size
>* psymval
,
602 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
604 This_insn::template rela
<32>(view
, 10, 0x003fffff, object
, psymval
, addend
);
607 // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
609 pcplt22(unsigned char* view
,
610 const Sized_relobj
<size
, big_endian
>* object
,
611 const Symbol_value
<size
>* psymval
,
612 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
613 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
615 This_insn::template pcrela
<32>(view
, 10, 0x003fffff, object
,
616 psymval
, addend
, address
);
619 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
621 lo10(unsigned char* view
,
622 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
623 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
625 This_insn::template rela
<32>(view
, 0, 0x000003ff, value
, addend
);
628 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
630 lo10(unsigned char* view
,
631 const Sized_relobj
<size
, big_endian
>* object
,
632 const Symbol_value
<size
>* psymval
,
633 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
635 This_insn::template rela
<32>(view
, 0, 0x000003ff, object
, psymval
, addend
);
638 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
640 lo10(unsigned char* view
,
641 const Sized_relobj
<size
, big_endian
>* object
,
642 const Symbol_value
<size
>* psymval
,
643 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
644 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
646 This_insn::template pcrela
<32>(view
, 0, 0x000003ff, object
,
647 psymval
, addend
, address
);
650 // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
652 olo10(unsigned char* view
,
653 const Sized_relobj
<size
, big_endian
>* object
,
654 const Symbol_value
<size
>* psymval
,
655 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
656 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend2
)
658 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
659 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
660 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
661 Valtype reloc
= psymval
->value(object
, addend
);
668 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
671 // R_SPARC_22: (Symbol + Addend)
673 rela32_22(unsigned char* view
,
674 const Sized_relobj
<size
, big_endian
>* object
,
675 const Symbol_value
<size
>* psymval
,
676 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
678 This_insn::template rela
<32>(view
, 0, 0x003fffff, object
, psymval
, addend
);
681 // R_SPARC_13: (Symbol + Addend)
683 rela32_13(unsigned char* view
,
684 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
685 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
687 This_insn::template rela
<32>(view
, 0, 0x00001fff, value
, addend
);
690 // R_SPARC_13: (Symbol + Addend)
692 rela32_13(unsigned char* view
,
693 const Sized_relobj
<size
, big_endian
>* object
,
694 const Symbol_value
<size
>* psymval
,
695 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
697 This_insn::template rela
<32>(view
, 0, 0x00001fff, object
, psymval
, addend
);
700 // R_SPARC_UA16: (Symbol + Addend)
702 ua16(unsigned char* view
,
703 const Sized_relobj
<size
, big_endian
>* object
,
704 const Symbol_value
<size
>* psymval
,
705 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
707 This::template rela_ua
<16>(view
, 0, 0xffff, object
, psymval
, addend
);
710 // R_SPARC_UA32: (Symbol + Addend)
712 ua32(unsigned char* view
,
713 const Sized_relobj
<size
, big_endian
>* object
,
714 const Symbol_value
<size
>* psymval
,
715 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
717 This::template rela_ua
<32>(view
, 0, 0xffffffff, object
, psymval
, addend
);
720 // R_SPARC_UA64: (Symbol + Addend)
722 ua64(unsigned char* view
,
723 const Sized_relobj
<size
, big_endian
>* object
,
724 const Symbol_value
<size
>* psymval
,
725 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
727 This::template rela_ua
<64>(view
, 0, ~(elfcpp::Elf_Xword
) 0,
728 object
, psymval
, addend
);
731 // R_SPARC_DISP8: (Symbol + Addend - Address)
733 disp8(unsigned char* view
,
734 const Sized_relobj
<size
, big_endian
>* object
,
735 const Symbol_value
<size
>* psymval
,
736 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
737 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
739 This::template pcrela_unaligned
<8>(view
, object
, psymval
,
743 // R_SPARC_DISP16: (Symbol + Addend - Address)
745 disp16(unsigned char* view
,
746 const Sized_relobj
<size
, big_endian
>* object
,
747 const Symbol_value
<size
>* psymval
,
748 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
749 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
751 This::template pcrela_unaligned
<16>(view
, object
, psymval
,
755 // R_SPARC_DISP32: (Symbol + Addend - Address)
757 disp32(unsigned char* view
,
758 const Sized_relobj
<size
, big_endian
>* object
,
759 const Symbol_value
<size
>* psymval
,
760 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
761 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
763 This::template pcrela_unaligned
<32>(view
, object
, psymval
,
767 // R_SPARC_DISP64: (Symbol + Addend - Address)
769 disp64(unsigned char* view
,
770 const Sized_relobj
<size
, big_endian
>* object
,
771 const Symbol_value
<size
>* psymval
,
772 elfcpp::Elf_Xword addend
,
773 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
775 This::template pcrela_unaligned
<64>(view
, object
, psymval
,
779 // R_SPARC_H44: (Symbol + Addend) >> 22
781 h44(unsigned char* view
,
782 const Sized_relobj
<size
, big_endian
>* object
,
783 const Symbol_value
<size
>* psymval
,
784 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
786 This_insn::template rela
<32>(view
, 22, 0x003fffff, object
, psymval
, addend
);
789 // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
791 m44(unsigned char* view
,
792 const Sized_relobj
<size
, big_endian
>* object
,
793 const Symbol_value
<size
>* psymval
,
794 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
796 This_insn::template rela
<32>(view
, 12, 0x000003ff, object
, psymval
, addend
);
799 // R_SPARC_L44: (Symbol + Addend) & 0xfff
801 l44(unsigned char* view
,
802 const Sized_relobj
<size
, big_endian
>* object
,
803 const Symbol_value
<size
>* psymval
,
804 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
806 This_insn::template rela
<32>(view
, 0, 0x00000fff, object
, psymval
, addend
);
809 // R_SPARC_HH22: (Symbol + Addend) >> 42
811 hh22(unsigned char* view
,
812 const Sized_relobj
<size
, big_endian
>* object
,
813 const Symbol_value
<size
>* psymval
,
814 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
816 This_insn::template rela
<32>(view
, 42, 0x003fffff, object
, psymval
, addend
);
819 // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
821 pc_hh22(unsigned char* view
,
822 const Sized_relobj
<size
, big_endian
>* object
,
823 const Symbol_value
<size
>* psymval
,
824 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
825 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
827 This_insn::template pcrela
<32>(view
, 42, 0x003fffff, object
,
828 psymval
, addend
, address
);
831 // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
833 hm10(unsigned char* view
,
834 const Sized_relobj
<size
, big_endian
>* object
,
835 const Symbol_value
<size
>* psymval
,
836 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
838 This_insn::template rela
<32>(view
, 32, 0x000003ff, object
, psymval
, addend
);
841 // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
843 pc_hm10(unsigned char* view
,
844 const Sized_relobj
<size
, big_endian
>* object
,
845 const Symbol_value
<size
>* psymval
,
846 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
847 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
849 This_insn::template pcrela
<32>(view
, 32, 0x000003ff, object
,
850 psymval
, addend
, address
);
853 // R_SPARC_11: (Symbol + Addend)
855 rela32_11(unsigned char* view
,
856 const Sized_relobj
<size
, big_endian
>* object
,
857 const Symbol_value
<size
>* psymval
,
858 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
860 This_insn::template rela
<32>(view
, 0, 0x000007ff, object
, psymval
, addend
);
863 // R_SPARC_10: (Symbol + Addend)
865 rela32_10(unsigned char* view
,
866 const Sized_relobj
<size
, big_endian
>* object
,
867 const Symbol_value
<size
>* psymval
,
868 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
870 This_insn::template rela
<32>(view
, 0, 0x000003ff, object
, psymval
, addend
);
873 // R_SPARC_7: (Symbol + Addend)
875 rela32_7(unsigned char* view
,
876 const Sized_relobj
<size
, big_endian
>* object
,
877 const Symbol_value
<size
>* psymval
,
878 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
880 This_insn::template rela
<32>(view
, 0, 0x0000007f, object
, psymval
, addend
);
883 // R_SPARC_6: (Symbol + Addend)
885 rela32_6(unsigned char* view
,
886 const Sized_relobj
<size
, big_endian
>* object
,
887 const Symbol_value
<size
>* psymval
,
888 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
890 This_insn::template rela
<32>(view
, 0, 0x0000003f, object
, psymval
, addend
);
893 // R_SPARC_5: (Symbol + Addend)
895 rela32_5(unsigned char* view
,
896 const Sized_relobj
<size
, big_endian
>* object
,
897 const Symbol_value
<size
>* psymval
,
898 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
900 This_insn::template rela
<32>(view
, 0, 0x0000001f, object
, psymval
, addend
);
903 // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
905 ldo_hix22(unsigned char* view
,
906 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
907 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
909 This_insn::hi22(view
, value
, addend
);
912 // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
914 ldo_lox10(unsigned char* view
,
915 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
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
= (value
+ addend
);
926 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
929 // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
931 hix22(unsigned char* view
,
932 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
933 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
935 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
936 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
937 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
938 Valtype reloc
= (value
+ addend
);
942 reloc
^= ~(Valtype
)0;
947 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
950 // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
952 hix22(unsigned char* view
,
953 const Sized_relobj
<size
, big_endian
>* object
,
954 const Symbol_value
<size
>* psymval
,
955 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
957 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
958 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
959 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
960 Valtype reloc
= psymval
->value(object
, addend
);
964 reloc
^= ~(Valtype
)0;
969 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
973 // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
975 lox10(unsigned char* view
,
976 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
977 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
979 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
980 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
981 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
982 Valtype reloc
= (value
+ addend
);
988 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
991 // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
993 lox10(unsigned char* view
,
994 const Sized_relobj
<size
, big_endian
>* object
,
995 const Symbol_value
<size
>* psymval
,
996 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
998 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
999 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1000 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
1001 Valtype reloc
= psymval
->value(object
, addend
);
1007 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
1011 // Get the GOT section, creating it if necessary.
1013 template<int size
, bool big_endian
>
1014 Output_data_got
<size
, big_endian
>*
1015 Target_sparc
<size
, big_endian
>::got_section(Symbol_table
* symtab
,
1018 if (this->got_
== NULL
)
1020 gold_assert(symtab
!= NULL
&& layout
!= NULL
);
1022 this->got_
= new Output_data_got
<size
, big_endian
>();
1025 os
= layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
1027 | elfcpp::SHF_WRITE
),
1031 // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
1032 symtab
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
1034 0, 0, elfcpp::STT_OBJECT
,
1036 elfcpp::STV_HIDDEN
, 0,
1043 // Get the dynamic reloc section, creating it if necessary.
1045 template<int size
, bool big_endian
>
1046 typename Target_sparc
<size
, big_endian
>::Reloc_section
*
1047 Target_sparc
<size
, big_endian
>::rela_dyn_section(Layout
* layout
)
1049 if (this->rela_dyn_
== NULL
)
1051 gold_assert(layout
!= NULL
);
1052 this->rela_dyn_
= new Reloc_section(parameters
->options().combreloc());
1053 layout
->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA
,
1054 elfcpp::SHF_ALLOC
, this->rela_dyn_
);
1056 return this->rela_dyn_
;
1059 // A class to handle the PLT data.
1061 template<int size
, bool big_endian
>
1062 class Output_data_plt_sparc
: public Output_section_data
1065 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
1066 size
, big_endian
> Reloc_section
;
1068 Output_data_plt_sparc(Layout
*);
1070 // Add an entry to the PLT.
1071 void add_entry(Symbol
* gsym
);
1073 // Return the .rela.plt section data.
1074 const Reloc_section
* rel_plt() const
1080 void do_adjust_output_section(Output_section
* os
);
1082 // Write to a map file.
1084 do_print_to_mapfile(Mapfile
* mapfile
) const
1085 { mapfile
->print_output_data(this, _("** PLT")); }
1088 // The size of an entry in the PLT.
1089 static const int base_plt_entry_size
= (size
== 32 ? 12 : 32);
1091 static const unsigned int plt_entries_per_block
= 160;
1092 static const unsigned int plt_insn_chunk_size
= 24;
1093 static const unsigned int plt_pointer_chunk_size
= 8;
1094 static const unsigned int plt_block_size
=
1095 (plt_entries_per_block
1096 * (plt_insn_chunk_size
+ plt_pointer_chunk_size
));
1098 // Set the final size.
1100 set_final_data_size()
1102 unsigned int full_count
= this->count_
+ 4;
1103 unsigned int extra
= (size
== 32 ? 4 : 0);
1105 if (size
== 32 || full_count
< 32768)
1106 this->set_data_size((full_count
* base_plt_entry_size
) + extra
);
1109 unsigned int ext_cnt
= full_count
- 32768;
1111 this->set_data_size((32768 * base_plt_entry_size
)
1113 * (plt_insn_chunk_size
1114 + plt_pointer_chunk_size
)));
1118 // Write out the PLT data.
1120 do_write(Output_file
*);
1122 // The reloc section.
1123 Reloc_section
* rel_
;
1124 // The number of PLT entries.
1125 unsigned int count_
;
1128 // Define the constants as required by C++ standard.
1130 template<int size
, bool big_endian
>
1131 const int Output_data_plt_sparc
<size
, big_endian
>::base_plt_entry_size
;
1133 template<int size
, bool big_endian
>
1135 Output_data_plt_sparc
<size
, big_endian
>::plt_entries_per_block
;
1137 template<int size
, bool big_endian
>
1138 const unsigned int Output_data_plt_sparc
<size
, big_endian
>::plt_insn_chunk_size
;
1140 template<int size
, bool big_endian
>
1142 Output_data_plt_sparc
<size
, big_endian
>::plt_pointer_chunk_size
;
1144 template<int size
, bool big_endian
>
1145 const unsigned int Output_data_plt_sparc
<size
, big_endian
>::plt_block_size
;
1147 // Create the PLT section. The ordinary .got section is an argument,
1148 // since we need to refer to the start.
1150 template<int size
, bool big_endian
>
1151 Output_data_plt_sparc
<size
, big_endian
>::Output_data_plt_sparc(Layout
* layout
)
1152 : Output_section_data(size
== 32 ? 4 : 8), count_(0)
1154 this->rel_
= new Reloc_section(false);
1155 layout
->add_output_section_data(".rela.plt", elfcpp::SHT_RELA
,
1156 elfcpp::SHF_ALLOC
, this->rel_
);
1159 template<int size
, bool big_endian
>
1161 Output_data_plt_sparc
<size
, big_endian
>::do_adjust_output_section(Output_section
* os
)
1166 // Add an entry to the PLT.
1168 template<int size
, bool big_endian
>
1170 Output_data_plt_sparc
<size
, big_endian
>::add_entry(Symbol
* gsym
)
1172 gold_assert(!gsym
->has_plt_offset());
1174 unsigned int index
= this->count_
+ 4;
1175 section_offset_type plt_offset
;
1177 if (size
== 32 || index
< 32768)
1178 plt_offset
= index
* base_plt_entry_size
;
1181 unsigned int ext_index
= index
- 32768;
1183 plt_offset
= (32768 * base_plt_entry_size
)
1184 + ((ext_index
/ plt_entries_per_block
)
1186 + ((ext_index
% plt_entries_per_block
)
1187 * plt_insn_chunk_size
);
1190 gsym
->set_plt_offset(plt_offset
);
1194 // Every PLT entry needs a reloc.
1195 gsym
->set_needs_dynsym_entry();
1196 this->rel_
->add_global(gsym
, elfcpp::R_SPARC_JMP_SLOT
, this,
1199 // Note that we don't need to save the symbol. The contents of the
1200 // PLT are independent of which symbols are used. The symbols only
1201 // appear in the relocations.
1204 static const unsigned int sparc_nop
= 0x01000000;
1205 static const unsigned int sparc_sethi_g1
= 0x03000000;
1206 static const unsigned int sparc_branch_always
= 0x30800000;
1207 static const unsigned int sparc_branch_always_pt
= 0x30680000;
1208 static const unsigned int sparc_mov
= 0x80100000;
1209 static const unsigned int sparc_mov_g0_o0
= 0x90100000;
1210 static const unsigned int sparc_mov_o7_g5
= 0x8a10000f;
1211 static const unsigned int sparc_call_plus_8
= 0x40000002;
1212 static const unsigned int sparc_ldx_o7_imm_g1
= 0xc25be000;
1213 static const unsigned int sparc_jmpl_o7_g1_g1
= 0x83c3c001;
1214 static const unsigned int sparc_mov_g5_o7
= 0x9e100005;
1216 // Write out the PLT.
1218 template<int size
, bool big_endian
>
1220 Output_data_plt_sparc
<size
, big_endian
>::do_write(Output_file
* of
)
1222 const off_t offset
= this->offset();
1223 const section_size_type oview_size
=
1224 convert_to_section_size_type(this->data_size());
1225 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
1226 unsigned char* pov
= oview
;
1228 memset(pov
, 0, base_plt_entry_size
* 4);
1229 pov
+= base_plt_entry_size
* 4;
1231 unsigned int plt_offset
= base_plt_entry_size
* 4;
1232 const unsigned int count
= this->count_
;
1238 limit
= (count
> 32768 ? 32768 : count
);
1240 for (unsigned int i
= 0; i
< limit
; ++i
)
1242 elfcpp::Swap
<32, true>::writeval(pov
+ 0x00,
1243 sparc_sethi_g1
+ plt_offset
);
1244 elfcpp::Swap
<32, true>::writeval(pov
+ 0x04,
1245 sparc_branch_always_pt
+
1246 (((base_plt_entry_size
-
1247 (plt_offset
+ 4)) >> 2) &
1249 elfcpp::Swap
<32, true>::writeval(pov
+ 0x08, sparc_nop
);
1250 elfcpp::Swap
<32, true>::writeval(pov
+ 0x0c, sparc_nop
);
1251 elfcpp::Swap
<32, true>::writeval(pov
+ 0x10, sparc_nop
);
1252 elfcpp::Swap
<32, true>::writeval(pov
+ 0x14, sparc_nop
);
1253 elfcpp::Swap
<32, true>::writeval(pov
+ 0x18, sparc_nop
);
1254 elfcpp::Swap
<32, true>::writeval(pov
+ 0x1c, sparc_nop
);
1256 pov
+= base_plt_entry_size
;
1257 plt_offset
+= base_plt_entry_size
;
1262 unsigned int ext_cnt
= count
- 32768;
1263 unsigned int blks
= ext_cnt
/ plt_entries_per_block
;
1265 for (unsigned int i
= 0; i
< blks
; ++i
)
1267 unsigned int data_off
= (plt_entries_per_block
1268 * plt_insn_chunk_size
) - 4;
1270 for (unsigned int j
= 0; j
< plt_entries_per_block
; ++j
)
1272 elfcpp::Swap
<32, true>::writeval(pov
+ 0x00,
1274 elfcpp::Swap
<32, true>::writeval(pov
+ 0x04,
1276 elfcpp::Swap
<32, true>::writeval(pov
+ 0x08,
1278 elfcpp::Swap
<32, true>::writeval(pov
+ 0x0c,
1279 sparc_ldx_o7_imm_g1
+
1280 (data_off
& 0x1fff));
1281 elfcpp::Swap
<32, true>::writeval(pov
+ 0x10,
1282 sparc_jmpl_o7_g1_g1
);
1283 elfcpp::Swap
<32, true>::writeval(pov
+ 0x14,
1286 elfcpp::Swap
<64, big_endian
>::writeval(
1287 pov
+ 0x4 + data_off
,
1288 (elfcpp::Elf_Xword
) (oview
- (pov
+ 0x04)));
1290 pov
+= plt_insn_chunk_size
;
1295 unsigned int sub_blk_cnt
= ext_cnt
% plt_entries_per_block
;
1296 for (unsigned int i
= 0; i
< sub_blk_cnt
; ++i
)
1298 unsigned int data_off
= (sub_blk_cnt
1299 * plt_insn_chunk_size
) - 4;
1301 for (unsigned int j
= 0; j
< plt_entries_per_block
; ++j
)
1303 elfcpp::Swap
<32, true>::writeval(pov
+ 0x00,
1305 elfcpp::Swap
<32, true>::writeval(pov
+ 0x04,
1307 elfcpp::Swap
<32, true>::writeval(pov
+ 0x08,
1309 elfcpp::Swap
<32, true>::writeval(pov
+ 0x0c,
1310 sparc_ldx_o7_imm_g1
+
1311 (data_off
& 0x1fff));
1312 elfcpp::Swap
<32, true>::writeval(pov
+ 0x10,
1313 sparc_jmpl_o7_g1_g1
);
1314 elfcpp::Swap
<32, true>::writeval(pov
+ 0x14,
1317 elfcpp::Swap
<64, big_endian
>::writeval(
1318 pov
+ 0x4 + data_off
,
1319 (elfcpp::Elf_Xword
) (oview
- (pov
+ 0x04)));
1321 pov
+= plt_insn_chunk_size
;
1329 for (unsigned int i
= 0; i
< count
; ++i
)
1331 elfcpp::Swap
<32, true>::writeval(pov
+ 0x00,
1332 sparc_sethi_g1
+ plt_offset
);
1333 elfcpp::Swap
<32, true>::writeval(pov
+ 0x04,
1334 sparc_branch_always
+
1335 (((- (plt_offset
+ 4)) >> 2) &
1337 elfcpp::Swap
<32, true>::writeval(pov
+ 0x08, sparc_nop
);
1339 pov
+= base_plt_entry_size
;
1340 plt_offset
+= base_plt_entry_size
;
1343 elfcpp::Swap
<32, true>::writeval(pov
, sparc_nop
);
1347 gold_assert(static_cast<section_size_type
>(pov
- oview
) == oview_size
);
1349 of
->write_output_view(offset
, oview_size
, oview
);
1352 // Create a PLT entry for a global symbol.
1354 template<int size
, bool big_endian
>
1356 Target_sparc
<size
, big_endian
>::make_plt_entry(Symbol_table
* symtab
,
1360 if (gsym
->has_plt_offset())
1363 if (this->plt_
== NULL
)
1365 // Create the GOT sections first.
1366 this->got_section(symtab
, layout
);
1368 this->plt_
= new Output_data_plt_sparc
<size
, big_endian
>(layout
);
1369 layout
->add_output_section_data(".plt", elfcpp::SHT_PROGBITS
,
1371 | elfcpp::SHF_EXECINSTR
1372 | elfcpp::SHF_WRITE
),
1375 // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1376 symtab
->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL
,
1378 0, 0, elfcpp::STT_OBJECT
,
1380 elfcpp::STV_HIDDEN
, 0,
1384 this->plt_
->add_entry(gsym
);
1387 // Create a GOT entry for the TLS module index.
1389 template<int size
, bool big_endian
>
1391 Target_sparc
<size
, big_endian
>::got_mod_index_entry(Symbol_table
* symtab
,
1393 Sized_relobj
<size
, big_endian
>* object
)
1395 if (this->got_mod_index_offset_
== -1U)
1397 gold_assert(symtab
!= NULL
&& layout
!= NULL
&& object
!= NULL
);
1398 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
1399 Output_data_got
<size
, big_endian
>* got
;
1400 unsigned int got_offset
;
1402 got
= this->got_section(symtab
, layout
);
1403 got_offset
= got
->add_constant(0);
1404 rela_dyn
->add_local(object
, 0,
1406 elfcpp::R_SPARC_TLS_DTPMOD64
:
1407 elfcpp::R_SPARC_TLS_DTPMOD32
), got
,
1409 got
->add_constant(0);
1410 this->got_mod_index_offset_
= got_offset
;
1412 return this->got_mod_index_offset_
;
1415 // Optimize the TLS relocation type based on what we know about the
1416 // symbol. IS_FINAL is true if the final address of this symbol is
1417 // known at link time.
1419 static tls::Tls_optimization
1420 optimize_tls_reloc(bool is_final
, int r_type
)
1422 // If we are generating a shared library, then we can't do anything
1424 if (parameters
->options().shared())
1425 return tls::TLSOPT_NONE
;
1429 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
1430 case elfcpp::R_SPARC_TLS_GD_LO10
:
1431 case elfcpp::R_SPARC_TLS_GD_ADD
:
1432 case elfcpp::R_SPARC_TLS_GD_CALL
:
1433 // These are General-Dynamic which permits fully general TLS
1434 // access. Since we know that we are generating an executable,
1435 // we can convert this to Initial-Exec. If we also know that
1436 // this is a local symbol, we can further switch to Local-Exec.
1438 return tls::TLSOPT_TO_LE
;
1439 return tls::TLSOPT_TO_IE
;
1441 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
1442 case elfcpp::R_SPARC_TLS_LDM_LO10
:
1443 case elfcpp::R_SPARC_TLS_LDM_ADD
:
1444 case elfcpp::R_SPARC_TLS_LDM_CALL
:
1445 // This is Local-Dynamic, which refers to a local symbol in the
1446 // dynamic TLS block. Since we know that we generating an
1447 // executable, we can switch to Local-Exec.
1448 return tls::TLSOPT_TO_LE
;
1450 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
1451 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
1452 case elfcpp::R_SPARC_TLS_LDO_ADD
:
1453 // Another type of Local-Dynamic relocation.
1454 return tls::TLSOPT_TO_LE
;
1456 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
1457 case elfcpp::R_SPARC_TLS_IE_LO10
:
1458 case elfcpp::R_SPARC_TLS_IE_LD
:
1459 case elfcpp::R_SPARC_TLS_IE_LDX
:
1460 case elfcpp::R_SPARC_TLS_IE_ADD
:
1461 // These are Initial-Exec relocs which get the thread offset
1462 // from the GOT. If we know that we are linking against the
1463 // local symbol, we can switch to Local-Exec, which links the
1464 // thread offset into the instruction.
1466 return tls::TLSOPT_TO_LE
;
1467 return tls::TLSOPT_NONE
;
1469 case elfcpp::R_SPARC_TLS_LE_HIX22
: // Local-exec
1470 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1471 // When we already have Local-Exec, there is nothing further we
1473 return tls::TLSOPT_NONE
;
1480 // Generate a PLT entry slot for a call to __tls_get_addr
1481 template<int size
, bool big_endian
>
1483 Target_sparc
<size
, big_endian
>::Scan::generate_tls_call(Symbol_table
* symtab
,
1485 Target_sparc
<size
, big_endian
>* target
)
1487 Symbol
* gsym
= target
->tls_get_addr_sym(symtab
);
1489 target
->make_plt_entry(symtab
, layout
, gsym
);
1492 // Report an unsupported relocation against a local symbol.
1494 template<int size
, bool big_endian
>
1496 Target_sparc
<size
, big_endian
>::Scan::unsupported_reloc_local(
1497 Sized_relobj
<size
, big_endian
>* object
,
1498 unsigned int r_type
)
1500 gold_error(_("%s: unsupported reloc %u against local symbol"),
1501 object
->name().c_str(), r_type
);
1504 // We are about to emit a dynamic relocation of type R_TYPE. If the
1505 // dynamic linker does not support it, issue an error.
1507 template<int size
, bool big_endian
>
1509 Target_sparc
<size
, big_endian
>::Scan::check_non_pic(Relobj
* object
, unsigned int r_type
)
1511 gold_assert(r_type
!= elfcpp::R_SPARC_NONE
);
1517 // These are the relocation types supported by glibc for sparc 64-bit.
1518 case elfcpp::R_SPARC_RELATIVE
:
1519 case elfcpp::R_SPARC_COPY
:
1520 case elfcpp::R_SPARC_64
:
1521 case elfcpp::R_SPARC_GLOB_DAT
:
1522 case elfcpp::R_SPARC_JMP_SLOT
:
1523 case elfcpp::R_SPARC_TLS_DTPMOD64
:
1524 case elfcpp::R_SPARC_TLS_DTPOFF64
:
1525 case elfcpp::R_SPARC_TLS_TPOFF64
:
1526 case elfcpp::R_SPARC_TLS_LE_HIX22
:
1527 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1528 case elfcpp::R_SPARC_8
:
1529 case elfcpp::R_SPARC_16
:
1530 case elfcpp::R_SPARC_DISP8
:
1531 case elfcpp::R_SPARC_DISP16
:
1532 case elfcpp::R_SPARC_DISP32
:
1533 case elfcpp::R_SPARC_WDISP30
:
1534 case elfcpp::R_SPARC_LO10
:
1535 case elfcpp::R_SPARC_HI22
:
1536 case elfcpp::R_SPARC_OLO10
:
1537 case elfcpp::R_SPARC_H44
:
1538 case elfcpp::R_SPARC_M44
:
1539 case elfcpp::R_SPARC_L44
:
1540 case elfcpp::R_SPARC_HH22
:
1541 case elfcpp::R_SPARC_HM10
:
1542 case elfcpp::R_SPARC_LM22
:
1543 case elfcpp::R_SPARC_UA16
:
1544 case elfcpp::R_SPARC_UA32
:
1545 case elfcpp::R_SPARC_UA64
:
1556 // These are the relocation types supported by glibc for sparc 32-bit.
1557 case elfcpp::R_SPARC_RELATIVE
:
1558 case elfcpp::R_SPARC_COPY
:
1559 case elfcpp::R_SPARC_GLOB_DAT
:
1560 case elfcpp::R_SPARC_32
:
1561 case elfcpp::R_SPARC_JMP_SLOT
:
1562 case elfcpp::R_SPARC_TLS_DTPMOD32
:
1563 case elfcpp::R_SPARC_TLS_DTPOFF32
:
1564 case elfcpp::R_SPARC_TLS_TPOFF32
:
1565 case elfcpp::R_SPARC_TLS_LE_HIX22
:
1566 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1567 case elfcpp::R_SPARC_8
:
1568 case elfcpp::R_SPARC_16
:
1569 case elfcpp::R_SPARC_DISP8
:
1570 case elfcpp::R_SPARC_DISP16
:
1571 case elfcpp::R_SPARC_DISP32
:
1572 case elfcpp::R_SPARC_LO10
:
1573 case elfcpp::R_SPARC_WDISP30
:
1574 case elfcpp::R_SPARC_HI22
:
1575 case elfcpp::R_SPARC_UA16
:
1576 case elfcpp::R_SPARC_UA32
:
1584 // This prevents us from issuing more than one error per reloc
1585 // section. But we can still wind up issuing more than one
1586 // error per object file.
1587 if (this->issued_non_pic_error_
)
1589 gold_assert(parameters
->options().output_is_position_independent());
1590 object
->error(_("requires unsupported dynamic reloc; "
1591 "recompile with -fPIC"));
1592 this->issued_non_pic_error_
= true;
1596 // Scan a relocation for a local symbol.
1598 template<int size
, bool big_endian
>
1600 Target_sparc
<size
, big_endian
>::Scan::local(
1601 const General_options
&,
1602 Symbol_table
* symtab
,
1604 Target_sparc
<size
, big_endian
>* target
,
1605 Sized_relobj
<size
, big_endian
>* object
,
1606 unsigned int data_shndx
,
1607 Output_section
* output_section
,
1608 const elfcpp::Rela
<size
, big_endian
>& reloc
,
1609 unsigned int r_type
,
1610 const elfcpp::Sym
<size
, big_endian
>& lsym
)
1612 unsigned int orig_r_type
= r_type
;
1617 case elfcpp::R_SPARC_NONE
:
1618 case elfcpp::R_SPARC_REGISTER
:
1619 case elfcpp::R_SPARC_GNU_VTINHERIT
:
1620 case elfcpp::R_SPARC_GNU_VTENTRY
:
1623 case elfcpp::R_SPARC_64
:
1624 case elfcpp::R_SPARC_32
:
1625 // If building a shared library (or a position-independent
1626 // executable), we need to create a dynamic relocation for
1627 // this location. The relocation applied at link time will
1628 // apply the link-time value, so we flag the location with
1629 // an R_SPARC_RELATIVE relocation so the dynamic loader can
1630 // relocate it easily.
1631 if (parameters
->options().output_is_position_independent())
1633 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1634 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1635 rela_dyn
->add_local_relative(object
, r_sym
, elfcpp::R_SPARC_RELATIVE
,
1636 output_section
, data_shndx
,
1637 reloc
.get_r_offset(),
1638 reloc
.get_r_addend());
1642 case elfcpp::R_SPARC_HIX22
:
1643 case elfcpp::R_SPARC_LOX10
:
1644 case elfcpp::R_SPARC_H44
:
1645 case elfcpp::R_SPARC_M44
:
1646 case elfcpp::R_SPARC_L44
:
1647 case elfcpp::R_SPARC_HH22
:
1648 case elfcpp::R_SPARC_HM10
:
1649 case elfcpp::R_SPARC_LM22
:
1650 case elfcpp::R_SPARC_UA64
:
1651 case elfcpp::R_SPARC_UA32
:
1652 case elfcpp::R_SPARC_UA16
:
1653 case elfcpp::R_SPARC_HI22
:
1654 case elfcpp::R_SPARC_LO10
:
1655 case elfcpp::R_SPARC_OLO10
:
1656 case elfcpp::R_SPARC_16
:
1657 case elfcpp::R_SPARC_11
:
1658 case elfcpp::R_SPARC_10
:
1659 case elfcpp::R_SPARC_8
:
1660 case elfcpp::R_SPARC_7
:
1661 case elfcpp::R_SPARC_6
:
1662 case elfcpp::R_SPARC_5
:
1663 // If building a shared library (or a position-independent
1664 // executable), we need to create a dynamic relocation for
1666 if (parameters
->options().output_is_position_independent())
1668 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1670 check_non_pic(object
, r_type
);
1671 if (lsym
.get_st_type() != elfcpp::STT_SECTION
)
1673 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1674 rela_dyn
->add_local(object
, r_sym
, orig_r_type
, output_section
,
1675 data_shndx
, reloc
.get_r_offset(),
1676 reloc
.get_r_addend());
1680 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1681 gold_assert(lsym
.get_st_value() == 0);
1682 rela_dyn
->add_local_relative(object
, r_sym
, orig_r_type
,
1683 output_section
, data_shndx
,
1684 reloc
.get_r_offset(),
1685 reloc
.get_r_addend());
1690 case elfcpp::R_SPARC_WDISP30
:
1691 case elfcpp::R_SPARC_WDISP22
:
1692 case elfcpp::R_SPARC_WDISP19
:
1693 case elfcpp::R_SPARC_WDISP16
:
1694 case elfcpp::R_SPARC_DISP8
:
1695 case elfcpp::R_SPARC_DISP16
:
1696 case elfcpp::R_SPARC_DISP32
:
1697 case elfcpp::R_SPARC_DISP64
:
1698 case elfcpp::R_SPARC_PC10
:
1699 case elfcpp::R_SPARC_PC22
:
1702 case elfcpp::R_SPARC_GOT10
:
1703 case elfcpp::R_SPARC_GOT13
:
1704 case elfcpp::R_SPARC_GOT22
:
1706 // The symbol requires a GOT entry.
1707 Output_data_got
<size
, big_endian
>* got
;
1710 got
= target
->got_section(symtab
, layout
);
1711 r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1713 // If we are generating a shared object, we need to add a
1714 // dynamic relocation for this symbol's GOT entry.
1715 if (parameters
->options().output_is_position_independent())
1717 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
))
1719 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1722 off
= got
->add_constant(0);
1723 object
->set_local_got_offset(r_sym
, GOT_TYPE_STANDARD
, off
);
1724 rela_dyn
->add_local_relative(object
, r_sym
,
1725 elfcpp::R_SPARC_RELATIVE
,
1730 got
->add_local(object
, r_sym
, GOT_TYPE_STANDARD
);
1734 // These are initial TLS relocs, which are expected when
1736 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
1737 case elfcpp::R_SPARC_TLS_GD_LO10
:
1738 case elfcpp::R_SPARC_TLS_GD_ADD
:
1739 case elfcpp::R_SPARC_TLS_GD_CALL
:
1740 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
1741 case elfcpp::R_SPARC_TLS_LDM_LO10
:
1742 case elfcpp::R_SPARC_TLS_LDM_ADD
:
1743 case elfcpp::R_SPARC_TLS_LDM_CALL
:
1744 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
1745 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
1746 case elfcpp::R_SPARC_TLS_LDO_ADD
:
1747 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
1748 case elfcpp::R_SPARC_TLS_IE_LO10
:
1749 case elfcpp::R_SPARC_TLS_IE_LD
:
1750 case elfcpp::R_SPARC_TLS_IE_LDX
:
1751 case elfcpp::R_SPARC_TLS_IE_ADD
:
1752 case elfcpp::R_SPARC_TLS_LE_HIX22
: // Local-exec
1753 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1755 bool output_is_shared
= parameters
->options().shared();
1756 const tls::Tls_optimization optimized_type
1757 = optimize_tls_reloc(!output_is_shared
, r_type
);
1760 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
1761 case elfcpp::R_SPARC_TLS_GD_LO10
:
1762 case elfcpp::R_SPARC_TLS_GD_ADD
:
1763 case elfcpp::R_SPARC_TLS_GD_CALL
:
1764 if (optimized_type
== tls::TLSOPT_NONE
)
1766 // Create a pair of GOT entries for the module index and
1767 // dtv-relative offset.
1768 Output_data_got
<size
, big_endian
>* got
1769 = target
->got_section(symtab
, layout
);
1770 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1771 unsigned int shndx
= lsym
.get_st_shndx();
1773 shndx
= object
->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
1775 object
->error(_("local symbol %u has bad shndx %u"),
1778 got
->add_local_pair_with_rela(object
, r_sym
,
1779 lsym
.get_st_shndx(),
1781 target
->rela_dyn_section(layout
),
1783 ? elfcpp::R_SPARC_TLS_DTPMOD64
1784 : elfcpp::R_SPARC_TLS_DTPMOD32
),
1786 if (r_type
== elfcpp::R_SPARC_TLS_GD_CALL
)
1787 generate_tls_call(symtab
, layout
, target
);
1789 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
1790 unsupported_reloc_local(object
, r_type
);
1793 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
1794 case elfcpp::R_SPARC_TLS_LDM_LO10
:
1795 case elfcpp::R_SPARC_TLS_LDM_ADD
:
1796 case elfcpp::R_SPARC_TLS_LDM_CALL
:
1797 if (optimized_type
== tls::TLSOPT_NONE
)
1799 // Create a GOT entry for the module index.
1800 target
->got_mod_index_entry(symtab
, layout
, object
);
1802 if (r_type
== elfcpp::R_SPARC_TLS_LDM_CALL
)
1803 generate_tls_call(symtab
, layout
, target
);
1805 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
1806 unsupported_reloc_local(object
, r_type
);
1809 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
1810 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
1811 case elfcpp::R_SPARC_TLS_LDO_ADD
:
1814 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
1815 case elfcpp::R_SPARC_TLS_IE_LO10
:
1816 case elfcpp::R_SPARC_TLS_IE_LD
:
1817 case elfcpp::R_SPARC_TLS_IE_LDX
:
1818 case elfcpp::R_SPARC_TLS_IE_ADD
:
1819 layout
->set_has_static_tls();
1820 if (optimized_type
== tls::TLSOPT_NONE
)
1822 // Create a GOT entry for the tp-relative offset.
1823 Output_data_got
<size
, big_endian
>* got
1824 = target
->got_section(symtab
, layout
);
1825 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1827 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_TLS_OFFSET
))
1829 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1830 unsigned int off
= got
->add_constant(0);
1832 object
->set_local_got_offset(r_sym
, GOT_TYPE_TLS_OFFSET
,
1834 rela_dyn
->add_local_relative(object
, r_sym
,
1836 elfcpp::R_SPARC_TLS_TPOFF64
:
1837 elfcpp::R_SPARC_TLS_TPOFF32
),
1841 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
1842 unsupported_reloc_local(object
, r_type
);
1845 case elfcpp::R_SPARC_TLS_LE_HIX22
: // Local-exec
1846 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1847 layout
->set_has_static_tls();
1848 if (output_is_shared
)
1850 // We need to create a dynamic relocation.
1851 gold_assert(lsym
.get_st_type() != elfcpp::STT_SECTION
);
1852 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1853 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1854 rela_dyn
->add_local_relative(object
, r_sym
, r_type
,
1855 output_section
, data_shndx
,
1856 reloc
.get_r_offset(), 0);
1863 // These are relocations which should only be seen by the
1864 // dynamic linker, and should never be seen here.
1865 case elfcpp::R_SPARC_COPY
:
1866 case elfcpp::R_SPARC_GLOB_DAT
:
1867 case elfcpp::R_SPARC_JMP_SLOT
:
1868 case elfcpp::R_SPARC_RELATIVE
:
1869 case elfcpp::R_SPARC_TLS_DTPMOD64
:
1870 case elfcpp::R_SPARC_TLS_DTPMOD32
:
1871 case elfcpp::R_SPARC_TLS_DTPOFF64
:
1872 case elfcpp::R_SPARC_TLS_DTPOFF32
:
1873 case elfcpp::R_SPARC_TLS_TPOFF64
:
1874 case elfcpp::R_SPARC_TLS_TPOFF32
:
1875 gold_error(_("%s: unexpected reloc %u in object file"),
1876 object
->name().c_str(), r_type
);
1880 unsupported_reloc_local(object
, r_type
);
1885 // Report an unsupported relocation against a global symbol.
1887 template<int size
, bool big_endian
>
1889 Target_sparc
<size
, big_endian
>::Scan::unsupported_reloc_global(
1890 Sized_relobj
<size
, big_endian
>* object
,
1891 unsigned int r_type
,
1894 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
1895 object
->name().c_str(), r_type
, gsym
->demangled_name().c_str());
1898 // Scan a relocation for a global symbol.
1900 template<int size
, bool big_endian
>
1902 Target_sparc
<size
, big_endian
>::Scan::global(
1903 const General_options
&,
1904 Symbol_table
* symtab
,
1906 Target_sparc
<size
, big_endian
>* target
,
1907 Sized_relobj
<size
, big_endian
>* object
,
1908 unsigned int data_shndx
,
1909 Output_section
* output_section
,
1910 const elfcpp::Rela
<size
, big_endian
>& reloc
,
1911 unsigned int r_type
,
1914 unsigned int orig_r_type
= r_type
;
1916 // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got
1917 // section. We check here to avoid creating a dynamic reloc against
1918 // _GLOBAL_OFFSET_TABLE_.
1919 if (!target
->has_got_section()
1920 && strcmp(gsym
->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
1921 target
->got_section(symtab
, layout
);
1926 case elfcpp::R_SPARC_NONE
:
1927 case elfcpp::R_SPARC_REGISTER
:
1928 case elfcpp::R_SPARC_GNU_VTINHERIT
:
1929 case elfcpp::R_SPARC_GNU_VTENTRY
:
1932 case elfcpp::R_SPARC_PLT64
:
1933 case elfcpp::R_SPARC_PLT32
:
1934 case elfcpp::R_SPARC_HIPLT22
:
1935 case elfcpp::R_SPARC_LOPLT10
:
1936 case elfcpp::R_SPARC_PCPLT32
:
1937 case elfcpp::R_SPARC_PCPLT22
:
1938 case elfcpp::R_SPARC_PCPLT10
:
1939 case elfcpp::R_SPARC_WPLT30
:
1940 // If the symbol is fully resolved, this is just a PC32 reloc.
1941 // Otherwise we need a PLT entry.
1942 if (gsym
->final_value_is_known())
1944 // If building a shared library, we can also skip the PLT entry
1945 // if the symbol is defined in the output file and is protected
1947 if (gsym
->is_defined()
1948 && !gsym
->is_from_dynobj()
1949 && !gsym
->is_preemptible())
1951 target
->make_plt_entry(symtab
, layout
, gsym
);
1954 case elfcpp::R_SPARC_DISP8
:
1955 case elfcpp::R_SPARC_DISP16
:
1956 case elfcpp::R_SPARC_DISP32
:
1957 case elfcpp::R_SPARC_DISP64
:
1958 case elfcpp::R_SPARC_PC_HH22
:
1959 case elfcpp::R_SPARC_PC_HM10
:
1960 case elfcpp::R_SPARC_PC_LM22
:
1961 case elfcpp::R_SPARC_PC10
:
1962 case elfcpp::R_SPARC_PC22
:
1963 case elfcpp::R_SPARC_WDISP30
:
1964 case elfcpp::R_SPARC_WDISP22
:
1965 case elfcpp::R_SPARC_WDISP19
:
1966 case elfcpp::R_SPARC_WDISP16
:
1968 if (gsym
->needs_plt_entry())
1969 target
->make_plt_entry(symtab
, layout
, gsym
);
1970 // Make a dynamic relocation if necessary.
1971 int flags
= Symbol::NON_PIC_REF
;
1972 if (gsym
->type() == elfcpp::STT_FUNC
)
1973 flags
|= Symbol::FUNCTION_CALL
;
1974 if (gsym
->needs_dynamic_reloc(flags
))
1976 if (gsym
->may_need_copy_reloc())
1978 target
->copy_reloc(symtab
, layout
, object
,
1979 data_shndx
, output_section
, gsym
,
1984 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1985 check_non_pic(object
, r_type
);
1986 rela_dyn
->add_global(gsym
, orig_r_type
, output_section
, object
,
1987 data_shndx
, reloc
.get_r_offset(),
1988 reloc
.get_r_addend());
1994 case elfcpp::R_SPARC_UA64
:
1995 case elfcpp::R_SPARC_64
:
1996 case elfcpp::R_SPARC_HIX22
:
1997 case elfcpp::R_SPARC_LOX10
:
1998 case elfcpp::R_SPARC_H44
:
1999 case elfcpp::R_SPARC_M44
:
2000 case elfcpp::R_SPARC_L44
:
2001 case elfcpp::R_SPARC_HH22
:
2002 case elfcpp::R_SPARC_HM10
:
2003 case elfcpp::R_SPARC_LM22
:
2004 case elfcpp::R_SPARC_HI22
:
2005 case elfcpp::R_SPARC_LO10
:
2006 case elfcpp::R_SPARC_OLO10
:
2007 case elfcpp::R_SPARC_UA32
:
2008 case elfcpp::R_SPARC_32
:
2009 case elfcpp::R_SPARC_UA16
:
2010 case elfcpp::R_SPARC_16
:
2011 case elfcpp::R_SPARC_11
:
2012 case elfcpp::R_SPARC_10
:
2013 case elfcpp::R_SPARC_8
:
2014 case elfcpp::R_SPARC_7
:
2015 case elfcpp::R_SPARC_6
:
2016 case elfcpp::R_SPARC_5
:
2018 // Make a PLT entry if necessary.
2019 if (gsym
->needs_plt_entry())
2021 target
->make_plt_entry(symtab
, layout
, gsym
);
2022 // Since this is not a PC-relative relocation, we may be
2023 // taking the address of a function. In that case we need to
2024 // set the entry in the dynamic symbol table to the address of
2026 if (gsym
->is_from_dynobj() && !parameters
->options().shared())
2027 gsym
->set_needs_dynsym_value();
2029 // Make a dynamic relocation if necessary.
2030 if (gsym
->needs_dynamic_reloc(Symbol::ABSOLUTE_REF
))
2032 if (gsym
->may_need_copy_reloc())
2034 target
->copy_reloc(symtab
, layout
, object
,
2035 data_shndx
, output_section
, gsym
, reloc
);
2037 else if ((r_type
== elfcpp::R_SPARC_32
2038 || r_type
== elfcpp::R_SPARC_64
)
2039 && gsym
->can_use_relative_reloc(false))
2041 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2042 rela_dyn
->add_global_relative(gsym
, elfcpp::R_SPARC_RELATIVE
,
2043 output_section
, object
,
2044 data_shndx
, reloc
.get_r_offset(),
2045 reloc
.get_r_addend());
2049 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2051 check_non_pic(object
, r_type
);
2052 if (gsym
->is_from_dynobj()
2053 || gsym
->is_undefined()
2054 || gsym
->is_preemptible())
2055 rela_dyn
->add_global(gsym
, orig_r_type
, output_section
,
2057 reloc
.get_r_offset(),
2058 reloc
.get_r_addend());
2060 rela_dyn
->add_global_relative(gsym
, orig_r_type
,
2061 output_section
, object
,
2063 reloc
.get_r_offset(),
2064 reloc
.get_r_addend());
2070 case elfcpp::R_SPARC_GOT10
:
2071 case elfcpp::R_SPARC_GOT13
:
2072 case elfcpp::R_SPARC_GOT22
:
2074 // The symbol requires a GOT entry.
2075 Output_data_got
<size
, big_endian
>* got
;
2077 got
= target
->got_section(symtab
, layout
);
2078 if (gsym
->final_value_is_known())
2079 got
->add_global(gsym
, GOT_TYPE_STANDARD
);
2082 // If this symbol is not fully resolved, we need to add a
2083 // dynamic relocation for it.
2084 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2085 if (gsym
->is_from_dynobj()
2086 || gsym
->is_undefined()
2087 || gsym
->is_preemptible())
2088 got
->add_global_with_rela(gsym
, GOT_TYPE_STANDARD
, rela_dyn
,
2089 elfcpp::R_SPARC_GLOB_DAT
);
2090 else if (!gsym
->has_got_offset(GOT_TYPE_STANDARD
))
2092 unsigned int off
= got
->add_constant(0);
2094 gsym
->set_got_offset(GOT_TYPE_STANDARD
, off
);
2095 rela_dyn
->add_global_relative(gsym
, elfcpp::R_SPARC_RELATIVE
,
2102 // These are initial tls relocs, which are expected when
2104 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
2105 case elfcpp::R_SPARC_TLS_GD_LO10
:
2106 case elfcpp::R_SPARC_TLS_GD_ADD
:
2107 case elfcpp::R_SPARC_TLS_GD_CALL
:
2108 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
2109 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2110 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2111 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2112 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
2113 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
2114 case elfcpp::R_SPARC_TLS_LDO_ADD
:
2115 case elfcpp::R_SPARC_TLS_LE_HIX22
:
2116 case elfcpp::R_SPARC_TLS_LE_LOX10
:
2117 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
2118 case elfcpp::R_SPARC_TLS_IE_LO10
:
2119 case elfcpp::R_SPARC_TLS_IE_LD
:
2120 case elfcpp::R_SPARC_TLS_IE_LDX
:
2121 case elfcpp::R_SPARC_TLS_IE_ADD
:
2123 const bool is_final
= gsym
->final_value_is_known();
2124 const tls::Tls_optimization optimized_type
2125 = optimize_tls_reloc(is_final
, r_type
);
2128 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
2129 case elfcpp::R_SPARC_TLS_GD_LO10
:
2130 case elfcpp::R_SPARC_TLS_GD_ADD
:
2131 case elfcpp::R_SPARC_TLS_GD_CALL
:
2132 if (optimized_type
== tls::TLSOPT_NONE
)
2134 // Create a pair of GOT entries for the module index and
2135 // dtv-relative offset.
2136 Output_data_got
<size
, big_endian
>* got
2137 = target
->got_section(symtab
, layout
);
2138 got
->add_global_pair_with_rela(gsym
, GOT_TYPE_TLS_PAIR
,
2139 target
->rela_dyn_section(layout
),
2141 elfcpp::R_SPARC_TLS_DTPMOD64
:
2142 elfcpp::R_SPARC_TLS_DTPMOD32
),
2144 elfcpp::R_SPARC_TLS_DTPOFF64
:
2145 elfcpp::R_SPARC_TLS_DTPOFF32
));
2147 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2148 if (r_type
== elfcpp::R_SPARC_TLS_GD_CALL
)
2149 generate_tls_call(symtab
, layout
, target
);
2151 else if (optimized_type
== tls::TLSOPT_TO_IE
)
2153 // Create a GOT entry for the tp-relative offset.
2154 Output_data_got
<size
, big_endian
>* got
2155 = target
->got_section(symtab
, layout
);
2156 got
->add_global_with_rela(gsym
, GOT_TYPE_TLS_OFFSET
,
2157 target
->rela_dyn_section(layout
),
2159 elfcpp::R_SPARC_TLS_TPOFF64
:
2160 elfcpp::R_SPARC_TLS_TPOFF32
));
2162 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
2163 unsupported_reloc_global(object
, r_type
, gsym
);
2166 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
2167 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2168 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2169 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2170 if (optimized_type
== tls::TLSOPT_NONE
)
2172 // Create a GOT entry for the module index.
2173 target
->got_mod_index_entry(symtab
, layout
, object
);
2175 if (r_type
== elfcpp::R_SPARC_TLS_LDM_CALL
)
2176 generate_tls_call(symtab
, layout
, target
);
2178 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
2179 unsupported_reloc_global(object
, r_type
, gsym
);
2182 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
2183 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
2184 case elfcpp::R_SPARC_TLS_LDO_ADD
:
2187 case elfcpp::R_SPARC_TLS_LE_HIX22
:
2188 case elfcpp::R_SPARC_TLS_LE_LOX10
:
2189 layout
->set_has_static_tls();
2190 if (parameters
->options().shared())
2192 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2193 rela_dyn
->add_global_relative(gsym
, orig_r_type
,
2194 output_section
, object
,
2195 data_shndx
, reloc
.get_r_offset(),
2200 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
2201 case elfcpp::R_SPARC_TLS_IE_LO10
:
2202 case elfcpp::R_SPARC_TLS_IE_LD
:
2203 case elfcpp::R_SPARC_TLS_IE_LDX
:
2204 case elfcpp::R_SPARC_TLS_IE_ADD
:
2205 layout
->set_has_static_tls();
2206 if (optimized_type
== tls::TLSOPT_NONE
)
2208 // Create a GOT entry for the tp-relative offset.
2209 Output_data_got
<size
, big_endian
>* got
2210 = target
->got_section(symtab
, layout
);
2211 got
->add_global_with_rela(gsym
, GOT_TYPE_TLS_OFFSET
,
2212 target
->rela_dyn_section(layout
),
2214 elfcpp::R_SPARC_TLS_TPOFF64
:
2215 elfcpp::R_SPARC_TLS_TPOFF32
));
2217 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
2218 unsupported_reloc_global(object
, r_type
, gsym
);
2224 // These are relocations which should only be seen by the
2225 // dynamic linker, and should never be seen here.
2226 case elfcpp::R_SPARC_COPY
:
2227 case elfcpp::R_SPARC_GLOB_DAT
:
2228 case elfcpp::R_SPARC_JMP_SLOT
:
2229 case elfcpp::R_SPARC_RELATIVE
:
2230 case elfcpp::R_SPARC_TLS_DTPMOD64
:
2231 case elfcpp::R_SPARC_TLS_DTPMOD32
:
2232 case elfcpp::R_SPARC_TLS_DTPOFF64
:
2233 case elfcpp::R_SPARC_TLS_DTPOFF32
:
2234 case elfcpp::R_SPARC_TLS_TPOFF64
:
2235 case elfcpp::R_SPARC_TLS_TPOFF32
:
2236 gold_error(_("%s: unexpected reloc %u in object file"),
2237 object
->name().c_str(), r_type
);
2241 unsupported_reloc_global(object
, r_type
, gsym
);
2246 // Process relocations for gc.
2248 template<int size
, bool big_endian
>
2250 Target_sparc
<size
, big_endian
>::gc_process_relocs(
2251 const General_options
& options
,
2252 Symbol_table
* symtab
,
2254 Sized_relobj
<size
, big_endian
>* object
,
2255 unsigned int data_shndx
,
2257 const unsigned char* prelocs
,
2259 Output_section
* output_section
,
2260 bool needs_special_offset_handling
,
2261 size_t local_symbol_count
,
2262 const unsigned char* plocal_symbols
)
2264 typedef Target_sparc
<size
, big_endian
> Sparc
;
2265 typedef typename Target_sparc
<size
, big_endian
>::Scan Scan
;
2267 gold::gc_process_relocs
<size
, big_endian
, Sparc
, elfcpp::SHT_RELA
, Scan
>(
2277 needs_special_offset_handling
,
2282 // Scan relocations for a section.
2284 template<int size
, bool big_endian
>
2286 Target_sparc
<size
, big_endian
>::scan_relocs(
2287 const General_options
& options
,
2288 Symbol_table
* symtab
,
2290 Sized_relobj
<size
, big_endian
>* object
,
2291 unsigned int data_shndx
,
2292 unsigned int sh_type
,
2293 const unsigned char* prelocs
,
2295 Output_section
* output_section
,
2296 bool needs_special_offset_handling
,
2297 size_t local_symbol_count
,
2298 const unsigned char* plocal_symbols
)
2300 typedef Target_sparc
<size
, big_endian
> Sparc
;
2301 typedef typename Target_sparc
<size
, big_endian
>::Scan Scan
;
2303 if (sh_type
== elfcpp::SHT_REL
)
2305 gold_error(_("%s: unsupported REL reloc section"),
2306 object
->name().c_str());
2310 gold::scan_relocs
<size
, big_endian
, Sparc
, elfcpp::SHT_RELA
, Scan
>(
2320 needs_special_offset_handling
,
2325 // Finalize the sections.
2327 template<int size
, bool big_endian
>
2329 Target_sparc
<size
, big_endian
>::do_finalize_sections(Layout
* layout
)
2331 // Fill in some more dynamic tags.
2332 Output_data_dynamic
* const odyn
= layout
->dynamic_data();
2335 if (this->plt_
!= NULL
)
2337 const Output_data
* od
= this->plt_
->rel_plt();
2338 odyn
->add_section_size(elfcpp::DT_PLTRELSZ
, od
);
2339 odyn
->add_section_address(elfcpp::DT_JMPREL
, od
);
2340 odyn
->add_constant(elfcpp::DT_PLTREL
, elfcpp::DT_RELA
);
2342 odyn
->add_section_address(elfcpp::DT_PLTGOT
, this->plt_
);
2345 if (this->rela_dyn_
!= NULL
)
2347 const Output_data
* od
= this->rela_dyn_
;
2348 odyn
->add_section_address(elfcpp::DT_RELA
, od
);
2349 odyn
->add_section_size(elfcpp::DT_RELASZ
, od
);
2350 odyn
->add_constant(elfcpp::DT_RELAENT
,
2351 elfcpp::Elf_sizes
<size
>::rela_size
);
2354 if (!parameters
->options().shared())
2356 // The value of the DT_DEBUG tag is filled in by the dynamic
2357 // linker at run time, and used by the debugger.
2358 odyn
->add_constant(elfcpp::DT_DEBUG
, 0);
2362 // Emit any relocs we saved in an attempt to avoid generating COPY
2364 if (this->copy_relocs_
.any_saved_relocs())
2365 this->copy_relocs_
.emit(this->rela_dyn_section(layout
));
2368 // Perform a relocation.
2370 template<int size
, bool big_endian
>
2372 Target_sparc
<size
, big_endian
>::Relocate::relocate(
2373 const Relocate_info
<size
, big_endian
>* relinfo
,
2374 Target_sparc
* target
,
2377 const elfcpp::Rela
<size
, big_endian
>& rela
,
2378 unsigned int r_type
,
2379 const Sized_symbol
<size
>* gsym
,
2380 const Symbol_value
<size
>* psymval
,
2381 unsigned char* view
,
2382 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
,
2383 section_size_type view_size
)
2387 if (this->ignore_gd_add_
)
2389 if (r_type
!= elfcpp::R_SPARC_TLS_GD_ADD
)
2390 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2391 _("missing expected TLS relocation"));
2394 this->ignore_gd_add_
= false;
2399 typedef Sparc_relocate_functions
<size
, big_endian
> Reloc
;
2401 // Pick the value to use for symbols defined in shared objects.
2402 Symbol_value
<size
> symval
;
2404 && gsym
->use_plt_offset(r_type
== elfcpp::R_SPARC_DISP8
2405 || r_type
== elfcpp::R_SPARC_DISP16
2406 || r_type
== elfcpp::R_SPARC_DISP32
2407 || r_type
== elfcpp::R_SPARC_DISP64
2408 || r_type
== elfcpp::R_SPARC_PC_HH22
2409 || r_type
== elfcpp::R_SPARC_PC_HM10
2410 || r_type
== elfcpp::R_SPARC_PC_LM22
2411 || r_type
== elfcpp::R_SPARC_PC10
2412 || r_type
== elfcpp::R_SPARC_PC22
2413 || r_type
== elfcpp::R_SPARC_WDISP30
2414 || r_type
== elfcpp::R_SPARC_WDISP22
2415 || r_type
== elfcpp::R_SPARC_WDISP19
2416 || r_type
== elfcpp::R_SPARC_WDISP16
))
2418 elfcpp::Elf_Xword value
;
2420 value
= target
->plt_section()->address() + gsym
->plt_offset();
2422 symval
.set_output_value(value
);
2427 const Sized_relobj
<size
, big_endian
>* object
= relinfo
->object
;
2428 const elfcpp::Elf_Xword addend
= rela
.get_r_addend();
2430 // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT
2431 // pointer points to the beginning, not the end, of the table.
2432 // So we just use the plain offset.
2433 bool have_got_offset
= false;
2434 unsigned int got_offset
= 0;
2437 case elfcpp::R_SPARC_GOT10
:
2438 case elfcpp::R_SPARC_GOT13
:
2439 case elfcpp::R_SPARC_GOT22
:
2442 gold_assert(gsym
->has_got_offset(GOT_TYPE_STANDARD
));
2443 got_offset
= gsym
->got_offset(GOT_TYPE_STANDARD
);
2447 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
2448 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
));
2449 got_offset
= object
->local_got_offset(r_sym
, GOT_TYPE_STANDARD
);
2451 have_got_offset
= true;
2460 case elfcpp::R_SPARC_NONE
:
2461 case elfcpp::R_SPARC_REGISTER
:
2462 case elfcpp::R_SPARC_GNU_VTINHERIT
:
2463 case elfcpp::R_SPARC_GNU_VTENTRY
:
2466 case elfcpp::R_SPARC_8
:
2467 Relocate_functions
<size
, big_endian
>::rela8(view
, object
,
2471 case elfcpp::R_SPARC_16
:
2472 Relocate_functions
<size
, big_endian
>::rela16(view
, object
,
2476 case elfcpp::R_SPARC_32
:
2477 if (!parameters
->options().output_is_position_independent())
2478 Relocate_functions
<size
, big_endian
>::rela32(view
, object
,
2482 case elfcpp::R_SPARC_DISP8
:
2483 Reloc::disp8(view
, object
, psymval
, addend
, address
);
2486 case elfcpp::R_SPARC_DISP16
:
2487 Reloc::disp16(view
, object
, psymval
, addend
, address
);
2490 case elfcpp::R_SPARC_DISP32
:
2491 Reloc::disp32(view
, object
, psymval
, addend
, address
);
2494 case elfcpp::R_SPARC_DISP64
:
2495 Reloc::disp64(view
, object
, psymval
, addend
, address
);
2498 case elfcpp::R_SPARC_WDISP30
:
2499 case elfcpp::R_SPARC_WPLT30
:
2500 Reloc::wdisp30(view
, object
, psymval
, addend
, address
);
2503 case elfcpp::R_SPARC_WDISP22
:
2504 Reloc::wdisp22(view
, object
, psymval
, addend
, address
);
2507 case elfcpp::R_SPARC_WDISP19
:
2508 Reloc::wdisp19(view
, object
, psymval
, addend
, address
);
2511 case elfcpp::R_SPARC_WDISP16
:
2512 Reloc::wdisp16(view
, object
, psymval
, addend
, address
);
2515 case elfcpp::R_SPARC_HI22
:
2516 Reloc::hi22(view
, object
, psymval
, addend
);
2519 case elfcpp::R_SPARC_22
:
2520 Reloc::rela32_22(view
, object
, psymval
, addend
);
2523 case elfcpp::R_SPARC_13
:
2524 Reloc::rela32_13(view
, object
, psymval
, addend
);
2527 case elfcpp::R_SPARC_LO10
:
2528 Reloc::lo10(view
, object
, psymval
, addend
);
2531 case elfcpp::R_SPARC_GOT10
:
2532 Reloc::lo10(view
, got_offset
, addend
);
2535 case elfcpp::R_SPARC_GOT13
:
2536 Reloc::rela32_13(view
, got_offset
, addend
);
2539 case elfcpp::R_SPARC_GOT22
:
2540 Reloc::hi22(view
, got_offset
, addend
);
2543 case elfcpp::R_SPARC_PC10
:
2544 Reloc::pc10(view
, object
, psymval
, addend
, address
);
2547 case elfcpp::R_SPARC_PC22
:
2548 Reloc::pc22(view
, object
, psymval
, addend
, address
);
2551 case elfcpp::R_SPARC_TLS_DTPOFF32
:
2552 case elfcpp::R_SPARC_UA32
:
2553 Reloc::ua32(view
, object
, psymval
, addend
);
2556 case elfcpp::R_SPARC_PLT64
:
2557 Relocate_functions
<size
, big_endian
>::rela64(view
, object
,
2561 case elfcpp::R_SPARC_PLT32
:
2562 Relocate_functions
<size
, big_endian
>::rela32(view
, object
,
2566 case elfcpp::R_SPARC_HIPLT22
:
2567 Reloc::hi22(view
, object
, psymval
, addend
);
2570 case elfcpp::R_SPARC_LOPLT10
:
2571 Reloc::lo10(view
, object
, psymval
, addend
);
2574 case elfcpp::R_SPARC_PCPLT32
:
2575 Reloc::disp32(view
, object
, psymval
, addend
, address
);
2578 case elfcpp::R_SPARC_PCPLT22
:
2579 Reloc::pcplt22(view
, object
, psymval
, addend
, address
);
2582 case elfcpp::R_SPARC_PCPLT10
:
2583 Reloc::lo10(view
, object
, psymval
, addend
, address
);
2586 case elfcpp::R_SPARC_64
:
2587 if (!parameters
->options().output_is_position_independent())
2588 Relocate_functions
<size
, big_endian
>::rela64(view
, object
,
2592 case elfcpp::R_SPARC_OLO10
:
2594 unsigned int addend2
= rela
.get_r_info() & 0xffffffff;
2595 addend2
= ((addend2
>> 8) ^ 0x800000) - 0x800000;
2596 Reloc::olo10(view
, object
, psymval
, addend
, addend2
);
2600 case elfcpp::R_SPARC_HH22
:
2601 Reloc::hh22(view
, object
, psymval
, addend
);
2604 case elfcpp::R_SPARC_PC_HH22
:
2605 Reloc::pc_hh22(view
, object
, psymval
, addend
, address
);
2608 case elfcpp::R_SPARC_HM10
:
2609 Reloc::hm10(view
, object
, psymval
, addend
);
2612 case elfcpp::R_SPARC_PC_HM10
:
2613 Reloc::pc_hm10(view
, object
, psymval
, addend
, address
);
2616 case elfcpp::R_SPARC_LM22
:
2617 Reloc::hi22(view
, object
, psymval
, addend
);
2620 case elfcpp::R_SPARC_PC_LM22
:
2621 Reloc::pcplt22(view
, object
, psymval
, addend
, address
);
2624 case elfcpp::R_SPARC_11
:
2625 Reloc::rela32_11(view
, object
, psymval
, addend
);
2628 case elfcpp::R_SPARC_10
:
2629 Reloc::rela32_10(view
, object
, psymval
, addend
);
2632 case elfcpp::R_SPARC_7
:
2633 Reloc::rela32_7(view
, object
, psymval
, addend
);
2636 case elfcpp::R_SPARC_6
:
2637 Reloc::rela32_6(view
, object
, psymval
, addend
);
2640 case elfcpp::R_SPARC_5
:
2641 Reloc::rela32_5(view
, object
, psymval
, addend
);
2644 case elfcpp::R_SPARC_HIX22
:
2645 Reloc::hix22(view
, object
, psymval
, addend
);
2648 case elfcpp::R_SPARC_LOX10
:
2649 Reloc::lox10(view
, object
, psymval
, addend
);
2652 case elfcpp::R_SPARC_H44
:
2653 Reloc::h44(view
, object
, psymval
, addend
);
2656 case elfcpp::R_SPARC_M44
:
2657 Reloc::m44(view
, object
, psymval
, addend
);
2660 case elfcpp::R_SPARC_L44
:
2661 Reloc::l44(view
, object
, psymval
, addend
);
2664 case elfcpp::R_SPARC_TLS_DTPOFF64
:
2665 case elfcpp::R_SPARC_UA64
:
2666 Reloc::ua64(view
, object
, psymval
, addend
);
2669 case elfcpp::R_SPARC_UA16
:
2670 Reloc::ua16(view
, object
, psymval
, addend
);
2673 case elfcpp::R_SPARC_TLS_GD_HI22
:
2674 case elfcpp::R_SPARC_TLS_GD_LO10
:
2675 case elfcpp::R_SPARC_TLS_GD_ADD
:
2676 case elfcpp::R_SPARC_TLS_GD_CALL
:
2677 case elfcpp::R_SPARC_TLS_LDM_HI22
:
2678 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2679 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2680 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2681 case elfcpp::R_SPARC_TLS_LDO_HIX22
:
2682 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
2683 case elfcpp::R_SPARC_TLS_LDO_ADD
:
2684 case elfcpp::R_SPARC_TLS_IE_HI22
:
2685 case elfcpp::R_SPARC_TLS_IE_LO10
:
2686 case elfcpp::R_SPARC_TLS_IE_LD
:
2687 case elfcpp::R_SPARC_TLS_IE_LDX
:
2688 case elfcpp::R_SPARC_TLS_IE_ADD
:
2689 case elfcpp::R_SPARC_TLS_LE_HIX22
:
2690 case elfcpp::R_SPARC_TLS_LE_LOX10
:
2691 this->relocate_tls(relinfo
, target
, relnum
, rela
,
2692 r_type
, gsym
, psymval
, view
,
2693 address
, view_size
);
2696 case elfcpp::R_SPARC_COPY
:
2697 case elfcpp::R_SPARC_GLOB_DAT
:
2698 case elfcpp::R_SPARC_JMP_SLOT
:
2699 case elfcpp::R_SPARC_RELATIVE
:
2700 // These are outstanding tls relocs, which are unexpected when
2702 case elfcpp::R_SPARC_TLS_DTPMOD64
:
2703 case elfcpp::R_SPARC_TLS_DTPMOD32
:
2704 case elfcpp::R_SPARC_TLS_TPOFF64
:
2705 case elfcpp::R_SPARC_TLS_TPOFF32
:
2706 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2707 _("unexpected reloc %u in object file"),
2712 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2713 _("unsupported reloc %u"),
2721 // Perform a TLS relocation.
2723 template<int size
, bool big_endian
>
2725 Target_sparc
<size
, big_endian
>::Relocate::relocate_tls(
2726 const Relocate_info
<size
, big_endian
>* relinfo
,
2727 Target_sparc
<size
, big_endian
>* target
,
2729 const elfcpp::Rela
<size
, big_endian
>& rela
,
2730 unsigned int r_type
,
2731 const Sized_symbol
<size
>* gsym
,
2732 const Symbol_value
<size
>* psymval
,
2733 unsigned char* view
,
2734 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
,
2737 Output_segment
* tls_segment
= relinfo
->layout
->tls_segment();
2738 typedef Sparc_relocate_functions
<size
, big_endian
> Reloc
;
2739 const Sized_relobj
<size
, big_endian
>* object
= relinfo
->object
;
2740 typedef typename
elfcpp::Swap
<32, true>::Valtype Insntype
;
2742 const elfcpp::Elf_Xword addend
= rela
.get_r_addend();
2743 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
= psymval
->value(object
, 0);
2745 const bool is_final
=
2747 ? !parameters
->options().output_is_position_independent()
2748 : gsym
->final_value_is_known());
2749 const tls::Tls_optimization optimized_type
2750 = optimize_tls_reloc(is_final
, r_type
);
2754 case elfcpp::R_SPARC_TLS_GD_HI22
:
2755 case elfcpp::R_SPARC_TLS_GD_LO10
:
2756 case elfcpp::R_SPARC_TLS_GD_ADD
:
2757 case elfcpp::R_SPARC_TLS_GD_CALL
:
2758 if (optimized_type
== tls::TLSOPT_TO_LE
)
2760 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2763 value
-= tls_segment
->memsz();
2767 case elfcpp::R_SPARC_TLS_GD_HI22
:
2768 // TLS_GD_HI22 --> TLS_LE_HIX22
2769 Reloc::hix22(view
, value
, addend
);
2772 case elfcpp::R_SPARC_TLS_GD_LO10
:
2773 // TLS_GD_LO10 --> TLS_LE_LOX10
2774 Reloc::lox10(view
, value
, addend
);
2777 case elfcpp::R_SPARC_TLS_GD_ADD
:
2778 // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
2779 val
= elfcpp::Swap
<32, true>::readval(wv
);
2780 val
= (val
& ~0x7c000) | 0x1c000;
2781 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2783 case elfcpp::R_SPARC_TLS_GD_CALL
:
2784 // call __tls_get_addr --> nop
2785 elfcpp::Swap
<32, true>::writeval(wv
, sparc_nop
);
2792 unsigned int got_type
= (optimized_type
== tls::TLSOPT_TO_IE
2793 ? GOT_TYPE_TLS_OFFSET
2794 : GOT_TYPE_TLS_PAIR
);
2797 gold_assert(gsym
->has_got_offset(got_type
));
2798 value
= gsym
->got_offset(got_type
);
2802 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
2803 gold_assert(object
->local_has_got_offset(r_sym
, got_type
));
2804 value
= object
->local_got_offset(r_sym
, got_type
);
2806 if (optimized_type
== tls::TLSOPT_TO_IE
)
2808 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2813 case elfcpp::R_SPARC_TLS_GD_HI22
:
2814 // TLS_GD_HI22 --> TLS_IE_HI22
2815 Reloc::hi22(view
, value
, addend
);
2818 case elfcpp::R_SPARC_TLS_GD_LO10
:
2819 // TLS_GD_LO10 --> TLS_IE_LO10
2820 Reloc::lo10(view
, value
, addend
);
2823 case elfcpp::R_SPARC_TLS_GD_ADD
:
2824 // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
2825 val
= elfcpp::Swap
<32, true>::readval(wv
);
2832 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2835 case elfcpp::R_SPARC_TLS_GD_CALL
:
2836 // The compiler can put the TLS_GD_ADD instruction
2837 // into the delay slot of the call. If so, we need
2838 // to transpose the two instructions so that the
2839 // the new sequence works properly.
2841 // The test we use is if the instruction in the
2842 // delay slot is an add with destination register
2844 val
= elfcpp::Swap
<32, true>::readval(wv
+ 1);
2845 if ((val
& 0x81f80000) == 0x80000000
2846 && ((val
>> 25) & 0x1f) == 0x8)
2853 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2856 this->ignore_gd_add_
= true;
2859 // call __tls_get_addr --> add %g7, %o0, %o0
2860 elfcpp::Swap
<32, true>::writeval(wv
, 0x9001c008);
2865 else if (optimized_type
== tls::TLSOPT_NONE
)
2869 case elfcpp::R_SPARC_TLS_GD_HI22
:
2870 Reloc::hi22(view
, value
, addend
);
2872 case elfcpp::R_SPARC_TLS_GD_LO10
:
2873 Reloc::lo10(view
, value
, addend
);
2875 case elfcpp::R_SPARC_TLS_GD_ADD
:
2877 case elfcpp::R_SPARC_TLS_GD_CALL
:
2879 Symbol_value
<size
> symval
;
2880 elfcpp::Elf_Xword value
;
2883 tsym
= target
->tls_get_addr_sym_
;
2885 value
= (target
->plt_section()->address() +
2886 tsym
->plt_offset());
2887 symval
.set_output_value(value
);
2888 Reloc::wdisp30(view
, object
, &symval
, addend
, address
);
2895 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2896 _("unsupported reloc %u"),
2900 case elfcpp::R_SPARC_TLS_LDM_HI22
:
2901 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2902 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2903 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2904 if (optimized_type
== tls::TLSOPT_TO_LE
)
2906 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2910 case elfcpp::R_SPARC_TLS_LDM_HI22
:
2911 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2912 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2913 elfcpp::Swap
<32, true>::writeval(wv
, sparc_nop
);
2916 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2917 elfcpp::Swap
<32, true>::writeval(wv
, sparc_mov_g0_o0
);
2922 else if (optimized_type
== tls::TLSOPT_NONE
)
2924 // Relocate the field with the offset of the GOT entry for
2925 // the module index.
2926 unsigned int got_offset
;
2928 got_offset
= target
->got_mod_index_entry(NULL
, NULL
, NULL
);
2931 case elfcpp::R_SPARC_TLS_LDM_HI22
:
2932 Reloc::hi22(view
, got_offset
, addend
);
2934 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2935 Reloc::lo10(view
, got_offset
, addend
);
2937 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2939 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2941 Symbol_value
<size
> symval
;
2942 elfcpp::Elf_Xword value
;
2945 tsym
= target
->tls_get_addr_sym_
;
2947 value
= (target
->plt_section()->address() +
2948 tsym
->plt_offset());
2949 symval
.set_output_value(value
);
2950 Reloc::wdisp30(view
, object
, &symval
, addend
, address
);
2956 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2957 _("unsupported reloc %u"),
2961 // These relocs can appear in debugging sections, in which case
2962 // we won't see the TLS_LDM relocs. The local_dynamic_type
2963 // field tells us this.
2964 case elfcpp::R_SPARC_TLS_LDO_HIX22
:
2965 if (optimized_type
== tls::TLSOPT_TO_LE
)
2967 value
-= tls_segment
->memsz();
2968 Reloc::hix22(view
, value
, addend
);
2971 Reloc::ldo_hix22(view
, value
, addend
);
2973 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
2974 if (optimized_type
== tls::TLSOPT_TO_LE
)
2976 value
-= tls_segment
->memsz();
2977 Reloc::lox10(view
, value
, addend
);
2980 Reloc::ldo_lox10(view
, value
, addend
);
2982 case elfcpp::R_SPARC_TLS_LDO_ADD
:
2983 if (optimized_type
== tls::TLSOPT_TO_LE
)
2985 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2988 // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
2989 val
= elfcpp::Swap
<32, true>::readval(wv
);
2990 val
= (val
& ~0x7c000) | 0x1c000;
2991 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2995 // When optimizing IE --> LE, the only relocation that is handled
2996 // differently is R_SPARC_TLS_IE_LD, it is rewritten from
2997 // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
2998 // rs2 and rd are the same.
2999 case elfcpp::R_SPARC_TLS_IE_LD
:
3000 case elfcpp::R_SPARC_TLS_IE_LDX
:
3001 if (optimized_type
== tls::TLSOPT_TO_LE
)
3003 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
3004 Insntype val
= elfcpp::Swap
<32, true>::readval(wv
);
3005 Insntype rs2
= val
& 0x1f;
3006 Insntype rd
= (val
>> 25) & 0x1f;
3011 val
= sparc_mov
| (val
& 0x3e00001f);
3013 elfcpp::Swap
<32, true>::writeval(wv
, val
);
3017 case elfcpp::R_SPARC_TLS_IE_HI22
:
3018 case elfcpp::R_SPARC_TLS_IE_LO10
:
3019 if (optimized_type
== tls::TLSOPT_TO_LE
)
3021 value
-= tls_segment
->memsz();
3024 case elfcpp::R_SPARC_TLS_IE_HI22
:
3025 // IE_HI22 --> LE_HIX22
3026 Reloc::hix22(view
, value
, addend
);
3028 case elfcpp::R_SPARC_TLS_IE_LO10
:
3029 // IE_LO10 --> LE_LOX10
3030 Reloc::lox10(view
, value
, addend
);
3035 else if (optimized_type
== tls::TLSOPT_NONE
)
3037 // Relocate the field with the offset of the GOT entry for
3038 // the tp-relative offset of the symbol.
3041 gold_assert(gsym
->has_got_offset(GOT_TYPE_TLS_OFFSET
));
3042 value
= gsym
->got_offset(GOT_TYPE_TLS_OFFSET
);
3046 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
3047 gold_assert(object
->local_has_got_offset(r_sym
,
3048 GOT_TYPE_TLS_OFFSET
));
3049 value
= object
->local_got_offset(r_sym
,
3050 GOT_TYPE_TLS_OFFSET
);
3054 case elfcpp::R_SPARC_TLS_IE_HI22
:
3055 Reloc::hi22(view
, value
, addend
);
3057 case elfcpp::R_SPARC_TLS_IE_LO10
:
3058 Reloc::lo10(view
, value
, addend
);
3063 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
3064 _("unsupported reloc %u"),
3068 case elfcpp::R_SPARC_TLS_IE_ADD
:
3069 // This seems to be mainly so that we can find the addition
3070 // instruction if there is one. There doesn't seem to be any
3071 // actual relocation to apply.
3074 case elfcpp::R_SPARC_TLS_LE_HIX22
:
3075 // If we're creating a shared library, a dynamic relocation will
3076 // have been created for this location, so do not apply it now.
3077 if (!parameters
->options().shared())
3079 value
-= tls_segment
->memsz();
3080 Reloc::hix22(view
, value
, addend
);
3084 case elfcpp::R_SPARC_TLS_LE_LOX10
:
3085 // If we're creating a shared library, a dynamic relocation will
3086 // have been created for this location, so do not apply it now.
3087 if (!parameters
->options().shared())
3089 value
-= tls_segment
->memsz();
3090 Reloc::lox10(view
, value
, addend
);
3096 // Relocate section data.
3098 template<int size
, bool big_endian
>
3100 Target_sparc
<size
, big_endian
>::relocate_section(
3101 const Relocate_info
<size
, big_endian
>* relinfo
,
3102 unsigned int sh_type
,
3103 const unsigned char* prelocs
,
3105 Output_section
* output_section
,
3106 bool needs_special_offset_handling
,
3107 unsigned char* view
,
3108 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
,
3109 section_size_type view_size
)
3111 typedef Target_sparc
<size
, big_endian
> Sparc
;
3112 typedef typename Target_sparc
<size
, big_endian
>::Relocate Sparc_relocate
;
3114 gold_assert(sh_type
== elfcpp::SHT_RELA
);
3116 gold::relocate_section
<size
, big_endian
, Sparc
, elfcpp::SHT_RELA
,
3123 needs_special_offset_handling
,
3129 // Return the size of a relocation while scanning during a relocatable
3132 template<int size
, bool big_endian
>
3134 Target_sparc
<size
, big_endian
>::Relocatable_size_for_reloc::get_size_for_reloc(
3138 // We are always SHT_RELA, so we should never get here.
3143 // Scan the relocs during a relocatable link.
3145 template<int size
, bool big_endian
>
3147 Target_sparc
<size
, big_endian
>::scan_relocatable_relocs(
3148 const General_options
& options
,
3149 Symbol_table
* symtab
,
3151 Sized_relobj
<size
, big_endian
>* object
,
3152 unsigned int data_shndx
,
3153 unsigned int sh_type
,
3154 const unsigned char* prelocs
,
3156 Output_section
* output_section
,
3157 bool needs_special_offset_handling
,
3158 size_t local_symbol_count
,
3159 const unsigned char* plocal_symbols
,
3160 Relocatable_relocs
* rr
)
3162 gold_assert(sh_type
== elfcpp::SHT_RELA
);
3164 typedef gold::Default_scan_relocatable_relocs
<elfcpp::SHT_RELA
,
3165 Relocatable_size_for_reloc
> Scan_relocatable_relocs
;
3167 gold::scan_relocatable_relocs
<size
, big_endian
, elfcpp::SHT_RELA
,
3168 Scan_relocatable_relocs
>(
3177 needs_special_offset_handling
,
3183 // Relocate a section during a relocatable link.
3185 template<int size
, bool big_endian
>
3187 Target_sparc
<size
, big_endian
>::relocate_for_relocatable(
3188 const Relocate_info
<size
, big_endian
>* relinfo
,
3189 unsigned int sh_type
,
3190 const unsigned char* prelocs
,
3192 Output_section
* output_section
,
3193 off_t offset_in_output_section
,
3194 const Relocatable_relocs
* rr
,
3195 unsigned char* view
,
3196 typename
elfcpp::Elf_types
<size
>::Elf_Addr view_address
,
3197 section_size_type view_size
,
3198 unsigned char* reloc_view
,
3199 section_size_type reloc_view_size
)
3201 gold_assert(sh_type
== elfcpp::SHT_RELA
);
3203 gold::relocate_for_relocatable
<size
, big_endian
, elfcpp::SHT_RELA
>(
3208 offset_in_output_section
,
3217 // Return the value to use for a dynamic which requires special
3218 // treatment. This is how we support equality comparisons of function
3219 // pointers across shared library boundaries, as described in the
3220 // processor specific ABI supplement.
3222 template<int size
, bool big_endian
>
3224 Target_sparc
<size
, big_endian
>::do_dynsym_value(const Symbol
* gsym
) const
3226 gold_assert(gsym
->is_from_dynobj() && gsym
->has_plt_offset());
3227 return this->plt_section()->address() + gsym
->plt_offset();
3230 // The selector for sparc object files.
3232 template<int size
, bool big_endian
>
3233 class Target_selector_sparc
: public Target_selector
3236 Target_selector_sparc()
3237 : Target_selector(elfcpp::EM_NONE
, size
, big_endian
,
3238 (size
== 64 ? "elf64-sparc" : "elf32-sparc"))
3241 Target
* do_recognize(int machine
, int, int)
3246 if (machine
!= elfcpp::EM_SPARCV9
)
3251 if (machine
!= elfcpp::EM_SPARC
3252 && machine
!= elfcpp::EM_SPARC32PLUS
)
3260 return this->instantiate_target();
3263 Target
* do_instantiate_target()
3264 { return new Target_sparc
<size
, big_endian
>(); }
3267 Target_selector_sparc
<32, true> target_selector_sparc32
;
3268 Target_selector_sparc
<64, true> target_selector_sparc64
;
3270 } // End anonymous namespace.