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
,
116 const Reloc_symbol_changes
*);
118 // Scan the relocs during a relocatable link.
120 scan_relocatable_relocs(const General_options
& options
,
121 Symbol_table
* symtab
,
123 Sized_relobj
<size
, big_endian
>* object
,
124 unsigned int data_shndx
,
125 unsigned int sh_type
,
126 const unsigned char* prelocs
,
128 Output_section
* output_section
,
129 bool needs_special_offset_handling
,
130 size_t local_symbol_count
,
131 const unsigned char* plocal_symbols
,
132 Relocatable_relocs
*);
134 // Relocate a section during a relocatable link.
136 relocate_for_relocatable(const Relocate_info
<size
, big_endian
>*,
137 unsigned int sh_type
,
138 const unsigned char* prelocs
,
140 Output_section
* output_section
,
141 off_t offset_in_output_section
,
142 const Relocatable_relocs
*,
144 typename
elfcpp::Elf_types
<size
>::Elf_Addr view_address
,
145 section_size_type view_size
,
146 unsigned char* reloc_view
,
147 section_size_type reloc_view_size
);
148 // Return whether SYM is defined by the ABI.
150 do_is_defined_by_abi(const Symbol
* sym
) const
152 // XXX Really need to support this better...
153 if (sym
->type() == elfcpp::STT_SPARC_REGISTER
)
156 return strcmp(sym
->name(), "___tls_get_addr") == 0;
159 // Return whether there is a GOT section.
161 has_got_section() const
162 { return this->got_
!= NULL
; }
164 // Return the size of the GOT section.
168 gold_assert(this->got_
!= NULL
);
169 return this->got_
->data_size();
174 // The class which scans relocations.
179 : issued_non_pic_error_(false)
183 local(const General_options
& options
, Symbol_table
* symtab
,
184 Layout
* layout
, Target_sparc
* target
,
185 Sized_relobj
<size
, big_endian
>* object
,
186 unsigned int data_shndx
,
187 Output_section
* output_section
,
188 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
189 const elfcpp::Sym
<size
, big_endian
>& lsym
);
192 global(const General_options
& options
, Symbol_table
* symtab
,
193 Layout
* layout
, Target_sparc
* target
,
194 Sized_relobj
<size
, big_endian
>* object
,
195 unsigned int data_shndx
,
196 Output_section
* output_section
,
197 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
202 unsupported_reloc_local(Sized_relobj
<size
, big_endian
>*,
203 unsigned int r_type
);
206 unsupported_reloc_global(Sized_relobj
<size
, big_endian
>*,
207 unsigned int r_type
, Symbol
*);
210 generate_tls_call(Symbol_table
* symtab
, Layout
* layout
,
211 Target_sparc
* target
);
214 check_non_pic(Relobj
*, unsigned int r_type
);
216 // Whether we have issued an error about a non-PIC compilation.
217 bool issued_non_pic_error_
;
220 // The class which implements relocation.
225 : ignore_gd_add_(false)
230 if (this->ignore_gd_add_
)
232 // FIXME: This needs to specify the location somehow.
233 gold_error(_("missing expected TLS relocation"));
237 // Do a relocation. Return false if the caller should not issue
238 // any warnings about this relocation.
240 relocate(const Relocate_info
<size
, big_endian
>*, Target_sparc
*,
241 Output_section
*, size_t relnum
,
242 const elfcpp::Rela
<size
, big_endian
>&,
243 unsigned int r_type
, const Sized_symbol
<size
>*,
244 const Symbol_value
<size
>*,
246 typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
250 // Do a TLS relocation.
252 relocate_tls(const Relocate_info
<size
, big_endian
>*, Target_sparc
* target
,
253 size_t relnum
, const elfcpp::Rela
<size
, big_endian
>&,
254 unsigned int r_type
, const Sized_symbol
<size
>*,
255 const Symbol_value
<size
>*,
257 typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
260 // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD
264 // A class which returns the size required for a relocation type,
265 // used while scanning relocs during a relocatable link.
266 class Relocatable_size_for_reloc
270 get_size_for_reloc(unsigned int, Relobj
*);
273 // Get the GOT section, creating it if necessary.
274 Output_data_got
<size
, big_endian
>*
275 got_section(Symbol_table
*, Layout
*);
277 // Create a PLT entry for a global symbol.
279 make_plt_entry(Symbol_table
*, Layout
*, Symbol
*);
281 // Create a GOT entry for the TLS module index.
283 got_mod_index_entry(Symbol_table
* symtab
, Layout
* layout
,
284 Sized_relobj
<size
, big_endian
>* object
);
286 // Return the gsym for "__tls_get_addr". Cache if not already
289 tls_get_addr_sym(Symbol_table
* symtab
)
291 if (!this->tls_get_addr_sym_
)
292 this->tls_get_addr_sym_
= symtab
->lookup("__tls_get_addr", NULL
);
293 gold_assert(this->tls_get_addr_sym_
);
294 return this->tls_get_addr_sym_
;
297 // Get the PLT section.
298 const Output_data_plt_sparc
<size
, big_endian
>*
301 gold_assert(this->plt_
!= NULL
);
305 // Get the dynamic reloc section, creating it if necessary.
307 rela_dyn_section(Layout
*);
309 // Copy a relocation against a global symbol.
311 copy_reloc(Symbol_table
* symtab
, Layout
* layout
,
312 Sized_relobj
<size
, big_endian
>* object
,
313 unsigned int shndx
, Output_section
* output_section
,
314 Symbol
* sym
, const elfcpp::Rela
<size
, big_endian
>& reloc
)
316 this->copy_relocs_
.copy_reloc(symtab
, layout
,
317 symtab
->get_sized_symbol
<size
>(sym
),
318 object
, shndx
, output_section
,
319 reloc
, this->rela_dyn_section(layout
));
322 // Information about this specific target which we pass to the
323 // general Target structure.
324 static Target::Target_info sparc_info
;
326 // The types of GOT entries needed for this platform.
329 GOT_TYPE_STANDARD
= 0, // GOT entry for a regular symbol
330 GOT_TYPE_TLS_OFFSET
= 1, // GOT entry for TLS offset
331 GOT_TYPE_TLS_PAIR
= 2, // GOT entry for TLS module/offset pair
335 Output_data_got
<size
, big_endian
>* got_
;
337 Output_data_plt_sparc
<size
, big_endian
>* plt_
;
338 // The dynamic reloc section.
339 Reloc_section
* rela_dyn_
;
340 // Relocs saved to avoid a COPY reloc.
341 Copy_relocs
<elfcpp::SHT_RELA
, size
, big_endian
> copy_relocs_
;
342 // Space for variables copied with a COPY reloc.
343 Output_data_space
* dynbss_
;
344 // Offset of the GOT entry for the TLS module index;
345 unsigned int got_mod_index_offset_
;
346 // Cached pointer to __tls_get_addr symbol
347 Symbol
* tls_get_addr_sym_
;
351 Target::Target_info Target_sparc
<32, true>::sparc_info
=
354 true, // is_big_endian
355 elfcpp::EM_SPARC
, // machine_code
356 false, // has_make_symbol
357 false, // has_resolve
358 false, // has_code_fill
359 true, // is_default_stack_executable
361 "/usr/lib/ld.so.1", // dynamic_linker
362 0x00010000, // default_text_segment_address
363 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
364 8 * 1024, // common_pagesize (overridable by -z common-page-size)
365 elfcpp::SHN_UNDEF
, // small_common_shndx
366 elfcpp::SHN_UNDEF
, // large_common_shndx
367 0, // small_common_section_flags
368 0 // large_common_section_flags
372 Target::Target_info Target_sparc
<64, true>::sparc_info
=
375 true, // is_big_endian
376 elfcpp::EM_SPARCV9
, // machine_code
377 false, // has_make_symbol
378 false, // has_resolve
379 false, // has_code_fill
380 true, // is_default_stack_executable
382 "/usr/lib/sparcv9/ld.so.1", // dynamic_linker
383 0x100000, // default_text_segment_address
384 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
385 8 * 1024, // common_pagesize (overridable by -z common-page-size)
386 elfcpp::SHN_UNDEF
, // small_common_shndx
387 elfcpp::SHN_UNDEF
, // large_common_shndx
388 0, // small_common_section_flags
389 0 // large_common_section_flags
392 // We have to take care here, even when operating in little-endian
393 // mode, sparc instructions are still big endian.
394 template<int size
, bool big_endian
>
395 class Sparc_relocate_functions
398 // Do a simple relocation with the addend in the relocation.
399 template<int valsize
>
401 rela(unsigned char* view
,
402 unsigned int right_shift
,
403 typename
elfcpp::Elf_types
<valsize
>::Elf_Addr dst_mask
,
404 typename
elfcpp::Swap
<size
, big_endian
>::Valtype value
,
405 typename
elfcpp::Swap
<size
, big_endian
>::Valtype addend
)
407 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
408 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
409 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
410 Valtype reloc
= ((value
+ addend
) >> right_shift
);
415 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
418 // Do a simple relocation using a symbol value with the addend in
420 template<int valsize
>
422 rela(unsigned char* view
,
423 unsigned int right_shift
,
424 typename
elfcpp::Elf_types
<valsize
>::Elf_Addr dst_mask
,
425 const Sized_relobj
<size
, big_endian
>* object
,
426 const Symbol_value
<size
>* psymval
,
427 typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype addend
)
429 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
430 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
431 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
432 Valtype reloc
= (psymval
->value(object
, addend
) >> right_shift
);
437 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
440 // Do a simple relocation using a symbol value with the addend in
441 // the relocation, unaligned.
442 template<int valsize
>
444 rela_ua(unsigned char* view
,
445 unsigned int right_shift
, elfcpp::Elf_Xword dst_mask
,
446 const Sized_relobj
<size
, big_endian
>* object
,
447 const Symbol_value
<size
>* psymval
,
448 typename
elfcpp::Swap
<size
, big_endian
>::Valtype addend
)
450 typedef typename
elfcpp::Swap_unaligned
<valsize
,
451 big_endian
>::Valtype Valtype
;
452 unsigned char* wv
= view
;
453 Valtype val
= elfcpp::Swap_unaligned
<valsize
, big_endian
>::readval(wv
);
454 Valtype reloc
= (psymval
->value(object
, addend
) >> right_shift
);
459 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
462 // Do a simple PC relative relocation with a Symbol_value with the
463 // addend in the relocation.
464 template<int valsize
>
466 pcrela(unsigned char* view
,
467 unsigned int right_shift
,
468 typename
elfcpp::Elf_types
<valsize
>::Elf_Addr dst_mask
,
469 const Sized_relobj
<size
, big_endian
>* object
,
470 const Symbol_value
<size
>* psymval
,
471 typename
elfcpp::Swap
<size
, big_endian
>::Valtype addend
,
472 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
474 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
475 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
476 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
477 Valtype reloc
= ((psymval
->value(object
, addend
) - address
)
483 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
486 template<int valsize
>
488 pcrela_unaligned(unsigned char* view
,
489 const Sized_relobj
<size
, big_endian
>* object
,
490 const Symbol_value
<size
>* psymval
,
491 typename
elfcpp::Swap
<size
, big_endian
>::Valtype addend
,
492 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
494 typedef typename
elfcpp::Swap_unaligned
<valsize
,
495 big_endian
>::Valtype Valtype
;
496 unsigned char* wv
= view
;
497 Valtype reloc
= (psymval
->value(object
, addend
) - address
);
499 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(wv
, reloc
);
502 typedef Sparc_relocate_functions
<size
, big_endian
> This
;
503 typedef Sparc_relocate_functions
<size
, true> This_insn
;
506 // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
508 wdisp30(unsigned char* view
,
509 const Sized_relobj
<size
, big_endian
>* object
,
510 const Symbol_value
<size
>* psymval
,
511 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
512 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
514 This_insn::template pcrela
<32>(view
, 2, 0x3fffffff, object
,
515 psymval
, addend
, address
);
518 // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
520 wdisp22(unsigned char* view
,
521 const Sized_relobj
<size
, big_endian
>* object
,
522 const Symbol_value
<size
>* psymval
,
523 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
524 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
526 This_insn::template pcrela
<32>(view
, 2, 0x003fffff, object
,
527 psymval
, addend
, address
);
530 // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
532 wdisp19(unsigned char* view
,
533 const Sized_relobj
<size
, big_endian
>* object
,
534 const Symbol_value
<size
>* psymval
,
535 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
536 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
538 This_insn::template pcrela
<32>(view
, 2, 0x0007ffff, object
,
539 psymval
, addend
, address
);
542 // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
544 wdisp16(unsigned char* view
,
545 const Sized_relobj
<size
, big_endian
>* object
,
546 const Symbol_value
<size
>* psymval
,
547 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
548 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
550 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
551 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
552 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
553 Valtype reloc
= ((psymval
->value(object
, addend
) - address
)
556 // The relocation value is split between the low 14 bits,
558 val
&= ~((0x3 << 20) | 0x3fff);
559 reloc
= (((reloc
& 0xc000) << (20 - 14))
560 | (reloc
& 0x3ffff));
562 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
565 // R_SPARC_PC22: (Symbol + Addend - Address) >> 10
567 pc22(unsigned char* view
,
568 const Sized_relobj
<size
, big_endian
>* object
,
569 const Symbol_value
<size
>* psymval
,
570 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
571 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
573 This_insn::template pcrela
<32>(view
, 10, 0x003fffff, object
,
574 psymval
, addend
, address
);
577 // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
579 pc10(unsigned char* view
,
580 const Sized_relobj
<size
, big_endian
>* object
,
581 const Symbol_value
<size
>* psymval
,
582 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
583 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
585 This_insn::template pcrela
<32>(view
, 0, 0x000003ff, object
,
586 psymval
, addend
, address
);
589 // R_SPARC_HI22: (Symbol + Addend) >> 10
591 hi22(unsigned char* view
,
592 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
593 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
595 This_insn::template rela
<32>(view
, 10, 0x003fffff, value
, addend
);
598 // R_SPARC_HI22: (Symbol + Addend) >> 10
600 hi22(unsigned char* view
,
601 const Sized_relobj
<size
, big_endian
>* object
,
602 const Symbol_value
<size
>* psymval
,
603 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
605 This_insn::template rela
<32>(view
, 10, 0x003fffff, object
, psymval
, addend
);
608 // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
610 pcplt22(unsigned char* view
,
611 const Sized_relobj
<size
, big_endian
>* object
,
612 const Symbol_value
<size
>* psymval
,
613 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
614 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
616 This_insn::template pcrela
<32>(view
, 10, 0x003fffff, object
,
617 psymval
, addend
, address
);
620 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
622 lo10(unsigned char* view
,
623 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
624 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
626 This_insn::template rela
<32>(view
, 0, 0x000003ff, value
, addend
);
629 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
631 lo10(unsigned char* view
,
632 const Sized_relobj
<size
, big_endian
>* object
,
633 const Symbol_value
<size
>* psymval
,
634 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
636 This_insn::template rela
<32>(view
, 0, 0x000003ff, object
, psymval
, addend
);
639 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
641 lo10(unsigned char* view
,
642 const Sized_relobj
<size
, big_endian
>* object
,
643 const Symbol_value
<size
>* psymval
,
644 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
645 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
647 This_insn::template pcrela
<32>(view
, 0, 0x000003ff, object
,
648 psymval
, addend
, address
);
651 // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
653 olo10(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
,
657 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend2
)
659 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
660 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
661 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
662 Valtype reloc
= psymval
->value(object
, addend
);
669 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
672 // R_SPARC_22: (Symbol + Addend)
674 rela32_22(unsigned char* view
,
675 const Sized_relobj
<size
, big_endian
>* object
,
676 const Symbol_value
<size
>* psymval
,
677 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
679 This_insn::template rela
<32>(view
, 0, 0x003fffff, object
, psymval
, addend
);
682 // R_SPARC_13: (Symbol + Addend)
684 rela32_13(unsigned char* view
,
685 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
686 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
688 This_insn::template rela
<32>(view
, 0, 0x00001fff, value
, addend
);
691 // R_SPARC_13: (Symbol + Addend)
693 rela32_13(unsigned char* view
,
694 const Sized_relobj
<size
, big_endian
>* object
,
695 const Symbol_value
<size
>* psymval
,
696 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
698 This_insn::template rela
<32>(view
, 0, 0x00001fff, object
, psymval
, addend
);
701 // R_SPARC_UA16: (Symbol + Addend)
703 ua16(unsigned char* view
,
704 const Sized_relobj
<size
, big_endian
>* object
,
705 const Symbol_value
<size
>* psymval
,
706 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
708 This::template rela_ua
<16>(view
, 0, 0xffff, object
, psymval
, addend
);
711 // R_SPARC_UA32: (Symbol + Addend)
713 ua32(unsigned char* view
,
714 const Sized_relobj
<size
, big_endian
>* object
,
715 const Symbol_value
<size
>* psymval
,
716 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
718 This::template rela_ua
<32>(view
, 0, 0xffffffff, object
, psymval
, addend
);
721 // R_SPARC_UA64: (Symbol + Addend)
723 ua64(unsigned char* view
,
724 const Sized_relobj
<size
, big_endian
>* object
,
725 const Symbol_value
<size
>* psymval
,
726 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
728 This::template rela_ua
<64>(view
, 0, ~(elfcpp::Elf_Xword
) 0,
729 object
, psymval
, addend
);
732 // R_SPARC_DISP8: (Symbol + Addend - Address)
734 disp8(unsigned char* view
,
735 const Sized_relobj
<size
, big_endian
>* object
,
736 const Symbol_value
<size
>* psymval
,
737 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
738 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
740 This::template pcrela_unaligned
<8>(view
, object
, psymval
,
744 // R_SPARC_DISP16: (Symbol + Addend - Address)
746 disp16(unsigned char* view
,
747 const Sized_relobj
<size
, big_endian
>* object
,
748 const Symbol_value
<size
>* psymval
,
749 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
750 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
752 This::template pcrela_unaligned
<16>(view
, object
, psymval
,
756 // R_SPARC_DISP32: (Symbol + Addend - Address)
758 disp32(unsigned char* view
,
759 const Sized_relobj
<size
, big_endian
>* object
,
760 const Symbol_value
<size
>* psymval
,
761 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
762 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
764 This::template pcrela_unaligned
<32>(view
, object
, psymval
,
768 // R_SPARC_DISP64: (Symbol + Addend - Address)
770 disp64(unsigned char* view
,
771 const Sized_relobj
<size
, big_endian
>* object
,
772 const Symbol_value
<size
>* psymval
,
773 elfcpp::Elf_Xword addend
,
774 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
776 This::template pcrela_unaligned
<64>(view
, object
, psymval
,
780 // R_SPARC_H44: (Symbol + Addend) >> 22
782 h44(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
)
787 This_insn::template rela
<32>(view
, 22, 0x003fffff, object
, psymval
, addend
);
790 // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
792 m44(unsigned char* view
,
793 const Sized_relobj
<size
, big_endian
>* object
,
794 const Symbol_value
<size
>* psymval
,
795 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
797 This_insn::template rela
<32>(view
, 12, 0x000003ff, object
, psymval
, addend
);
800 // R_SPARC_L44: (Symbol + Addend) & 0xfff
802 l44(unsigned char* view
,
803 const Sized_relobj
<size
, big_endian
>* object
,
804 const Symbol_value
<size
>* psymval
,
805 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
807 This_insn::template rela
<32>(view
, 0, 0x00000fff, object
, psymval
, addend
);
810 // R_SPARC_HH22: (Symbol + Addend) >> 42
812 hh22(unsigned char* view
,
813 const Sized_relobj
<size
, big_endian
>* object
,
814 const Symbol_value
<size
>* psymval
,
815 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
817 This_insn::template rela
<32>(view
, 42, 0x003fffff, object
, psymval
, addend
);
820 // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
822 pc_hh22(unsigned char* view
,
823 const Sized_relobj
<size
, big_endian
>* object
,
824 const Symbol_value
<size
>* psymval
,
825 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
826 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
828 This_insn::template pcrela
<32>(view
, 42, 0x003fffff, object
,
829 psymval
, addend
, address
);
832 // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
834 hm10(unsigned char* view
,
835 const Sized_relobj
<size
, big_endian
>* object
,
836 const Symbol_value
<size
>* psymval
,
837 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
839 This_insn::template rela
<32>(view
, 32, 0x000003ff, object
, psymval
, addend
);
842 // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
844 pc_hm10(unsigned char* view
,
845 const Sized_relobj
<size
, big_endian
>* object
,
846 const Symbol_value
<size
>* psymval
,
847 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
,
848 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
)
850 This_insn::template pcrela
<32>(view
, 32, 0x000003ff, object
,
851 psymval
, addend
, address
);
854 // R_SPARC_11: (Symbol + Addend)
856 rela32_11(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, 0x000007ff, object
, psymval
, addend
);
864 // R_SPARC_10: (Symbol + Addend)
866 rela32_10(unsigned char* view
,
867 const Sized_relobj
<size
, big_endian
>* object
,
868 const Symbol_value
<size
>* psymval
,
869 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
871 This_insn::template rela
<32>(view
, 0, 0x000003ff, object
, psymval
, addend
);
874 // R_SPARC_7: (Symbol + Addend)
876 rela32_7(unsigned char* view
,
877 const Sized_relobj
<size
, big_endian
>* object
,
878 const Symbol_value
<size
>* psymval
,
879 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
881 This_insn::template rela
<32>(view
, 0, 0x0000007f, object
, psymval
, addend
);
884 // R_SPARC_6: (Symbol + Addend)
886 rela32_6(unsigned char* view
,
887 const Sized_relobj
<size
, big_endian
>* object
,
888 const Symbol_value
<size
>* psymval
,
889 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
891 This_insn::template rela
<32>(view
, 0, 0x0000003f, object
, psymval
, addend
);
894 // R_SPARC_5: (Symbol + Addend)
896 rela32_5(unsigned char* view
,
897 const Sized_relobj
<size
, big_endian
>* object
,
898 const Symbol_value
<size
>* psymval
,
899 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
901 This_insn::template rela
<32>(view
, 0, 0x0000001f, object
, psymval
, addend
);
904 // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
906 ldo_hix22(unsigned char* view
,
907 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
908 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
910 This_insn::hi22(view
, value
, addend
);
913 // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
915 ldo_lox10(unsigned char* view
,
916 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
917 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
919 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
920 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
921 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
922 Valtype reloc
= (value
+ addend
);
927 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
930 // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
932 hix22(unsigned char* view
,
933 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
934 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
936 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
937 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
938 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
939 Valtype reloc
= (value
+ addend
);
943 reloc
^= ~(Valtype
)0;
948 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
951 // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
953 hix22(unsigned char* view
,
954 const Sized_relobj
<size
, big_endian
>* object
,
955 const Symbol_value
<size
>* psymval
,
956 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
958 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
959 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
960 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
961 Valtype reloc
= psymval
->value(object
, addend
);
965 reloc
^= ~(Valtype
)0;
970 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
974 // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
976 lox10(unsigned char* view
,
977 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
978 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
980 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
981 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
982 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
983 Valtype reloc
= (value
+ addend
);
989 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
992 // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
994 lox10(unsigned char* view
,
995 const Sized_relobj
<size
, big_endian
>* object
,
996 const Symbol_value
<size
>* psymval
,
997 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend
)
999 typedef typename
elfcpp::Swap
<32, true>::Valtype Valtype
;
1000 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1001 Valtype val
= elfcpp::Swap
<32, true>::readval(wv
);
1002 Valtype reloc
= psymval
->value(object
, addend
);
1008 elfcpp::Swap
<32, true>::writeval(wv
, val
| reloc
);
1012 // Get the GOT section, creating it if necessary.
1014 template<int size
, bool big_endian
>
1015 Output_data_got
<size
, big_endian
>*
1016 Target_sparc
<size
, big_endian
>::got_section(Symbol_table
* symtab
,
1019 if (this->got_
== NULL
)
1021 gold_assert(symtab
!= NULL
&& layout
!= NULL
);
1023 this->got_
= new Output_data_got
<size
, big_endian
>();
1026 os
= layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
1028 | elfcpp::SHF_WRITE
),
1032 // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
1033 symtab
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
1035 0, 0, elfcpp::STT_OBJECT
,
1037 elfcpp::STV_HIDDEN
, 0,
1044 // Get the dynamic reloc section, creating it if necessary.
1046 template<int size
, bool big_endian
>
1047 typename Target_sparc
<size
, big_endian
>::Reloc_section
*
1048 Target_sparc
<size
, big_endian
>::rela_dyn_section(Layout
* layout
)
1050 if (this->rela_dyn_
== NULL
)
1052 gold_assert(layout
!= NULL
);
1053 this->rela_dyn_
= new Reloc_section(parameters
->options().combreloc());
1054 layout
->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA
,
1055 elfcpp::SHF_ALLOC
, this->rela_dyn_
);
1057 return this->rela_dyn_
;
1060 // A class to handle the PLT data.
1062 template<int size
, bool big_endian
>
1063 class Output_data_plt_sparc
: public Output_section_data
1066 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
1067 size
, big_endian
> Reloc_section
;
1069 Output_data_plt_sparc(Layout
*);
1071 // Add an entry to the PLT.
1072 void add_entry(Symbol
* gsym
);
1074 // Return the .rela.plt section data.
1075 const Reloc_section
* rel_plt() const
1081 void do_adjust_output_section(Output_section
* os
);
1083 // Write to a map file.
1085 do_print_to_mapfile(Mapfile
* mapfile
) const
1086 { mapfile
->print_output_data(this, _("** PLT")); }
1089 // The size of an entry in the PLT.
1090 static const int base_plt_entry_size
= (size
== 32 ? 12 : 32);
1092 static const unsigned int plt_entries_per_block
= 160;
1093 static const unsigned int plt_insn_chunk_size
= 24;
1094 static const unsigned int plt_pointer_chunk_size
= 8;
1095 static const unsigned int plt_block_size
=
1096 (plt_entries_per_block
1097 * (plt_insn_chunk_size
+ plt_pointer_chunk_size
));
1099 // Set the final size.
1101 set_final_data_size()
1103 unsigned int full_count
= this->count_
+ 4;
1104 unsigned int extra
= (size
== 32 ? 4 : 0);
1106 if (size
== 32 || full_count
< 32768)
1107 this->set_data_size((full_count
* base_plt_entry_size
) + extra
);
1110 unsigned int ext_cnt
= full_count
- 32768;
1112 this->set_data_size((32768 * base_plt_entry_size
)
1114 * (plt_insn_chunk_size
1115 + plt_pointer_chunk_size
)));
1119 // Write out the PLT data.
1121 do_write(Output_file
*);
1123 // The reloc section.
1124 Reloc_section
* rel_
;
1125 // The number of PLT entries.
1126 unsigned int count_
;
1129 // Define the constants as required by C++ standard.
1131 template<int size
, bool big_endian
>
1132 const int Output_data_plt_sparc
<size
, big_endian
>::base_plt_entry_size
;
1134 template<int size
, bool big_endian
>
1136 Output_data_plt_sparc
<size
, big_endian
>::plt_entries_per_block
;
1138 template<int size
, bool big_endian
>
1139 const unsigned int Output_data_plt_sparc
<size
, big_endian
>::plt_insn_chunk_size
;
1141 template<int size
, bool big_endian
>
1143 Output_data_plt_sparc
<size
, big_endian
>::plt_pointer_chunk_size
;
1145 template<int size
, bool big_endian
>
1146 const unsigned int Output_data_plt_sparc
<size
, big_endian
>::plt_block_size
;
1148 // Create the PLT section. The ordinary .got section is an argument,
1149 // since we need to refer to the start.
1151 template<int size
, bool big_endian
>
1152 Output_data_plt_sparc
<size
, big_endian
>::Output_data_plt_sparc(Layout
* layout
)
1153 : Output_section_data(size
== 32 ? 4 : 8), count_(0)
1155 this->rel_
= new Reloc_section(false);
1156 layout
->add_output_section_data(".rela.plt", elfcpp::SHT_RELA
,
1157 elfcpp::SHF_ALLOC
, this->rel_
);
1160 template<int size
, bool big_endian
>
1162 Output_data_plt_sparc
<size
, big_endian
>::do_adjust_output_section(Output_section
* os
)
1167 // Add an entry to the PLT.
1169 template<int size
, bool big_endian
>
1171 Output_data_plt_sparc
<size
, big_endian
>::add_entry(Symbol
* gsym
)
1173 gold_assert(!gsym
->has_plt_offset());
1175 unsigned int index
= this->count_
+ 4;
1176 section_offset_type plt_offset
;
1178 if (size
== 32 || index
< 32768)
1179 plt_offset
= index
* base_plt_entry_size
;
1182 unsigned int ext_index
= index
- 32768;
1184 plt_offset
= (32768 * base_plt_entry_size
)
1185 + ((ext_index
/ plt_entries_per_block
)
1187 + ((ext_index
% plt_entries_per_block
)
1188 * plt_insn_chunk_size
);
1191 gsym
->set_plt_offset(plt_offset
);
1195 // Every PLT entry needs a reloc.
1196 gsym
->set_needs_dynsym_entry();
1197 this->rel_
->add_global(gsym
, elfcpp::R_SPARC_JMP_SLOT
, this,
1200 // Note that we don't need to save the symbol. The contents of the
1201 // PLT are independent of which symbols are used. The symbols only
1202 // appear in the relocations.
1205 static const unsigned int sparc_nop
= 0x01000000;
1206 static const unsigned int sparc_sethi_g1
= 0x03000000;
1207 static const unsigned int sparc_branch_always
= 0x30800000;
1208 static const unsigned int sparc_branch_always_pt
= 0x30680000;
1209 static const unsigned int sparc_mov
= 0x80100000;
1210 static const unsigned int sparc_mov_g0_o0
= 0x90100000;
1211 static const unsigned int sparc_mov_o7_g5
= 0x8a10000f;
1212 static const unsigned int sparc_call_plus_8
= 0x40000002;
1213 static const unsigned int sparc_ldx_o7_imm_g1
= 0xc25be000;
1214 static const unsigned int sparc_jmpl_o7_g1_g1
= 0x83c3c001;
1215 static const unsigned int sparc_mov_g5_o7
= 0x9e100005;
1217 // Write out the PLT.
1219 template<int size
, bool big_endian
>
1221 Output_data_plt_sparc
<size
, big_endian
>::do_write(Output_file
* of
)
1223 const off_t offset
= this->offset();
1224 const section_size_type oview_size
=
1225 convert_to_section_size_type(this->data_size());
1226 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
1227 unsigned char* pov
= oview
;
1229 memset(pov
, 0, base_plt_entry_size
* 4);
1230 pov
+= base_plt_entry_size
* 4;
1232 unsigned int plt_offset
= base_plt_entry_size
* 4;
1233 const unsigned int count
= this->count_
;
1239 limit
= (count
> 32768 ? 32768 : count
);
1241 for (unsigned int i
= 0; i
< limit
; ++i
)
1243 elfcpp::Swap
<32, true>::writeval(pov
+ 0x00,
1244 sparc_sethi_g1
+ plt_offset
);
1245 elfcpp::Swap
<32, true>::writeval(pov
+ 0x04,
1246 sparc_branch_always_pt
+
1247 (((base_plt_entry_size
-
1248 (plt_offset
+ 4)) >> 2) &
1250 elfcpp::Swap
<32, true>::writeval(pov
+ 0x08, sparc_nop
);
1251 elfcpp::Swap
<32, true>::writeval(pov
+ 0x0c, sparc_nop
);
1252 elfcpp::Swap
<32, true>::writeval(pov
+ 0x10, sparc_nop
);
1253 elfcpp::Swap
<32, true>::writeval(pov
+ 0x14, sparc_nop
);
1254 elfcpp::Swap
<32, true>::writeval(pov
+ 0x18, sparc_nop
);
1255 elfcpp::Swap
<32, true>::writeval(pov
+ 0x1c, sparc_nop
);
1257 pov
+= base_plt_entry_size
;
1258 plt_offset
+= base_plt_entry_size
;
1263 unsigned int ext_cnt
= count
- 32768;
1264 unsigned int blks
= ext_cnt
/ plt_entries_per_block
;
1266 for (unsigned int i
= 0; i
< blks
; ++i
)
1268 unsigned int data_off
= (plt_entries_per_block
1269 * plt_insn_chunk_size
) - 4;
1271 for (unsigned int j
= 0; j
< plt_entries_per_block
; ++j
)
1273 elfcpp::Swap
<32, true>::writeval(pov
+ 0x00,
1275 elfcpp::Swap
<32, true>::writeval(pov
+ 0x04,
1277 elfcpp::Swap
<32, true>::writeval(pov
+ 0x08,
1279 elfcpp::Swap
<32, true>::writeval(pov
+ 0x0c,
1280 sparc_ldx_o7_imm_g1
+
1281 (data_off
& 0x1fff));
1282 elfcpp::Swap
<32, true>::writeval(pov
+ 0x10,
1283 sparc_jmpl_o7_g1_g1
);
1284 elfcpp::Swap
<32, true>::writeval(pov
+ 0x14,
1287 elfcpp::Swap
<64, big_endian
>::writeval(
1288 pov
+ 0x4 + data_off
,
1289 (elfcpp::Elf_Xword
) (oview
- (pov
+ 0x04)));
1291 pov
+= plt_insn_chunk_size
;
1296 unsigned int sub_blk_cnt
= ext_cnt
% plt_entries_per_block
;
1297 for (unsigned int i
= 0; i
< sub_blk_cnt
; ++i
)
1299 unsigned int data_off
= (sub_blk_cnt
1300 * plt_insn_chunk_size
) - 4;
1302 for (unsigned int j
= 0; j
< plt_entries_per_block
; ++j
)
1304 elfcpp::Swap
<32, true>::writeval(pov
+ 0x00,
1306 elfcpp::Swap
<32, true>::writeval(pov
+ 0x04,
1308 elfcpp::Swap
<32, true>::writeval(pov
+ 0x08,
1310 elfcpp::Swap
<32, true>::writeval(pov
+ 0x0c,
1311 sparc_ldx_o7_imm_g1
+
1312 (data_off
& 0x1fff));
1313 elfcpp::Swap
<32, true>::writeval(pov
+ 0x10,
1314 sparc_jmpl_o7_g1_g1
);
1315 elfcpp::Swap
<32, true>::writeval(pov
+ 0x14,
1318 elfcpp::Swap
<64, big_endian
>::writeval(
1319 pov
+ 0x4 + data_off
,
1320 (elfcpp::Elf_Xword
) (oview
- (pov
+ 0x04)));
1322 pov
+= plt_insn_chunk_size
;
1330 for (unsigned int i
= 0; i
< count
; ++i
)
1332 elfcpp::Swap
<32, true>::writeval(pov
+ 0x00,
1333 sparc_sethi_g1
+ plt_offset
);
1334 elfcpp::Swap
<32, true>::writeval(pov
+ 0x04,
1335 sparc_branch_always
+
1336 (((- (plt_offset
+ 4)) >> 2) &
1338 elfcpp::Swap
<32, true>::writeval(pov
+ 0x08, sparc_nop
);
1340 pov
+= base_plt_entry_size
;
1341 plt_offset
+= base_plt_entry_size
;
1344 elfcpp::Swap
<32, true>::writeval(pov
, sparc_nop
);
1348 gold_assert(static_cast<section_size_type
>(pov
- oview
) == oview_size
);
1350 of
->write_output_view(offset
, oview_size
, oview
);
1353 // Create a PLT entry for a global symbol.
1355 template<int size
, bool big_endian
>
1357 Target_sparc
<size
, big_endian
>::make_plt_entry(Symbol_table
* symtab
,
1361 if (gsym
->has_plt_offset())
1364 if (this->plt_
== NULL
)
1366 // Create the GOT sections first.
1367 this->got_section(symtab
, layout
);
1369 this->plt_
= new Output_data_plt_sparc
<size
, big_endian
>(layout
);
1370 layout
->add_output_section_data(".plt", elfcpp::SHT_PROGBITS
,
1372 | elfcpp::SHF_EXECINSTR
1373 | elfcpp::SHF_WRITE
),
1376 // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1377 symtab
->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL
,
1379 0, 0, elfcpp::STT_OBJECT
,
1381 elfcpp::STV_HIDDEN
, 0,
1385 this->plt_
->add_entry(gsym
);
1388 // Create a GOT entry for the TLS module index.
1390 template<int size
, bool big_endian
>
1392 Target_sparc
<size
, big_endian
>::got_mod_index_entry(Symbol_table
* symtab
,
1394 Sized_relobj
<size
, big_endian
>* object
)
1396 if (this->got_mod_index_offset_
== -1U)
1398 gold_assert(symtab
!= NULL
&& layout
!= NULL
&& object
!= NULL
);
1399 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
1400 Output_data_got
<size
, big_endian
>* got
;
1401 unsigned int got_offset
;
1403 got
= this->got_section(symtab
, layout
);
1404 got_offset
= got
->add_constant(0);
1405 rela_dyn
->add_local(object
, 0,
1407 elfcpp::R_SPARC_TLS_DTPMOD64
:
1408 elfcpp::R_SPARC_TLS_DTPMOD32
), got
,
1410 got
->add_constant(0);
1411 this->got_mod_index_offset_
= got_offset
;
1413 return this->got_mod_index_offset_
;
1416 // Optimize the TLS relocation type based on what we know about the
1417 // symbol. IS_FINAL is true if the final address of this symbol is
1418 // known at link time.
1420 static tls::Tls_optimization
1421 optimize_tls_reloc(bool is_final
, int r_type
)
1423 // If we are generating a shared library, then we can't do anything
1425 if (parameters
->options().shared())
1426 return tls::TLSOPT_NONE
;
1430 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
1431 case elfcpp::R_SPARC_TLS_GD_LO10
:
1432 case elfcpp::R_SPARC_TLS_GD_ADD
:
1433 case elfcpp::R_SPARC_TLS_GD_CALL
:
1434 // These are General-Dynamic which permits fully general TLS
1435 // access. Since we know that we are generating an executable,
1436 // we can convert this to Initial-Exec. If we also know that
1437 // this is a local symbol, we can further switch to Local-Exec.
1439 return tls::TLSOPT_TO_LE
;
1440 return tls::TLSOPT_TO_IE
;
1442 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
1443 case elfcpp::R_SPARC_TLS_LDM_LO10
:
1444 case elfcpp::R_SPARC_TLS_LDM_ADD
:
1445 case elfcpp::R_SPARC_TLS_LDM_CALL
:
1446 // This is Local-Dynamic, which refers to a local symbol in the
1447 // dynamic TLS block. Since we know that we generating an
1448 // executable, we can switch to Local-Exec.
1449 return tls::TLSOPT_TO_LE
;
1451 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
1452 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
1453 case elfcpp::R_SPARC_TLS_LDO_ADD
:
1454 // Another type of Local-Dynamic relocation.
1455 return tls::TLSOPT_TO_LE
;
1457 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
1458 case elfcpp::R_SPARC_TLS_IE_LO10
:
1459 case elfcpp::R_SPARC_TLS_IE_LD
:
1460 case elfcpp::R_SPARC_TLS_IE_LDX
:
1461 case elfcpp::R_SPARC_TLS_IE_ADD
:
1462 // These are Initial-Exec relocs which get the thread offset
1463 // from the GOT. If we know that we are linking against the
1464 // local symbol, we can switch to Local-Exec, which links the
1465 // thread offset into the instruction.
1467 return tls::TLSOPT_TO_LE
;
1468 return tls::TLSOPT_NONE
;
1470 case elfcpp::R_SPARC_TLS_LE_HIX22
: // Local-exec
1471 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1472 // When we already have Local-Exec, there is nothing further we
1474 return tls::TLSOPT_NONE
;
1481 // Generate a PLT entry slot for a call to __tls_get_addr
1482 template<int size
, bool big_endian
>
1484 Target_sparc
<size
, big_endian
>::Scan::generate_tls_call(Symbol_table
* symtab
,
1486 Target_sparc
<size
, big_endian
>* target
)
1488 Symbol
* gsym
= target
->tls_get_addr_sym(symtab
);
1490 target
->make_plt_entry(symtab
, layout
, gsym
);
1493 // Report an unsupported relocation against a local symbol.
1495 template<int size
, bool big_endian
>
1497 Target_sparc
<size
, big_endian
>::Scan::unsupported_reloc_local(
1498 Sized_relobj
<size
, big_endian
>* object
,
1499 unsigned int r_type
)
1501 gold_error(_("%s: unsupported reloc %u against local symbol"),
1502 object
->name().c_str(), r_type
);
1505 // We are about to emit a dynamic relocation of type R_TYPE. If the
1506 // dynamic linker does not support it, issue an error.
1508 template<int size
, bool big_endian
>
1510 Target_sparc
<size
, big_endian
>::Scan::check_non_pic(Relobj
* object
, unsigned int r_type
)
1512 gold_assert(r_type
!= elfcpp::R_SPARC_NONE
);
1518 // These are the relocation types supported by glibc for sparc 64-bit.
1519 case elfcpp::R_SPARC_RELATIVE
:
1520 case elfcpp::R_SPARC_COPY
:
1521 case elfcpp::R_SPARC_64
:
1522 case elfcpp::R_SPARC_GLOB_DAT
:
1523 case elfcpp::R_SPARC_JMP_SLOT
:
1524 case elfcpp::R_SPARC_TLS_DTPMOD64
:
1525 case elfcpp::R_SPARC_TLS_DTPOFF64
:
1526 case elfcpp::R_SPARC_TLS_TPOFF64
:
1527 case elfcpp::R_SPARC_TLS_LE_HIX22
:
1528 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1529 case elfcpp::R_SPARC_8
:
1530 case elfcpp::R_SPARC_16
:
1531 case elfcpp::R_SPARC_DISP8
:
1532 case elfcpp::R_SPARC_DISP16
:
1533 case elfcpp::R_SPARC_DISP32
:
1534 case elfcpp::R_SPARC_WDISP30
:
1535 case elfcpp::R_SPARC_LO10
:
1536 case elfcpp::R_SPARC_HI22
:
1537 case elfcpp::R_SPARC_OLO10
:
1538 case elfcpp::R_SPARC_H44
:
1539 case elfcpp::R_SPARC_M44
:
1540 case elfcpp::R_SPARC_L44
:
1541 case elfcpp::R_SPARC_HH22
:
1542 case elfcpp::R_SPARC_HM10
:
1543 case elfcpp::R_SPARC_LM22
:
1544 case elfcpp::R_SPARC_UA16
:
1545 case elfcpp::R_SPARC_UA32
:
1546 case elfcpp::R_SPARC_UA64
:
1557 // These are the relocation types supported by glibc for sparc 32-bit.
1558 case elfcpp::R_SPARC_RELATIVE
:
1559 case elfcpp::R_SPARC_COPY
:
1560 case elfcpp::R_SPARC_GLOB_DAT
:
1561 case elfcpp::R_SPARC_32
:
1562 case elfcpp::R_SPARC_JMP_SLOT
:
1563 case elfcpp::R_SPARC_TLS_DTPMOD32
:
1564 case elfcpp::R_SPARC_TLS_DTPOFF32
:
1565 case elfcpp::R_SPARC_TLS_TPOFF32
:
1566 case elfcpp::R_SPARC_TLS_LE_HIX22
:
1567 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1568 case elfcpp::R_SPARC_8
:
1569 case elfcpp::R_SPARC_16
:
1570 case elfcpp::R_SPARC_DISP8
:
1571 case elfcpp::R_SPARC_DISP16
:
1572 case elfcpp::R_SPARC_DISP32
:
1573 case elfcpp::R_SPARC_LO10
:
1574 case elfcpp::R_SPARC_WDISP30
:
1575 case elfcpp::R_SPARC_HI22
:
1576 case elfcpp::R_SPARC_UA16
:
1577 case elfcpp::R_SPARC_UA32
:
1585 // This prevents us from issuing more than one error per reloc
1586 // section. But we can still wind up issuing more than one
1587 // error per object file.
1588 if (this->issued_non_pic_error_
)
1590 gold_assert(parameters
->options().output_is_position_independent());
1591 object
->error(_("requires unsupported dynamic reloc; "
1592 "recompile with -fPIC"));
1593 this->issued_non_pic_error_
= true;
1597 // Scan a relocation for a local symbol.
1599 template<int size
, bool big_endian
>
1601 Target_sparc
<size
, big_endian
>::Scan::local(
1602 const General_options
&,
1603 Symbol_table
* symtab
,
1605 Target_sparc
<size
, big_endian
>* target
,
1606 Sized_relobj
<size
, big_endian
>* object
,
1607 unsigned int data_shndx
,
1608 Output_section
* output_section
,
1609 const elfcpp::Rela
<size
, big_endian
>& reloc
,
1610 unsigned int r_type
,
1611 const elfcpp::Sym
<size
, big_endian
>& lsym
)
1613 unsigned int orig_r_type
= r_type
;
1618 case elfcpp::R_SPARC_NONE
:
1619 case elfcpp::R_SPARC_REGISTER
:
1620 case elfcpp::R_SPARC_GNU_VTINHERIT
:
1621 case elfcpp::R_SPARC_GNU_VTENTRY
:
1624 case elfcpp::R_SPARC_64
:
1625 case elfcpp::R_SPARC_32
:
1626 // If building a shared library (or a position-independent
1627 // executable), we need to create a dynamic relocation for
1628 // this location. The relocation applied at link time will
1629 // apply the link-time value, so we flag the location with
1630 // an R_SPARC_RELATIVE relocation so the dynamic loader can
1631 // relocate it easily.
1632 if (parameters
->options().output_is_position_independent())
1634 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1635 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1636 rela_dyn
->add_local_relative(object
, r_sym
, elfcpp::R_SPARC_RELATIVE
,
1637 output_section
, data_shndx
,
1638 reloc
.get_r_offset(),
1639 reloc
.get_r_addend());
1643 case elfcpp::R_SPARC_HIX22
:
1644 case elfcpp::R_SPARC_LOX10
:
1645 case elfcpp::R_SPARC_H44
:
1646 case elfcpp::R_SPARC_M44
:
1647 case elfcpp::R_SPARC_L44
:
1648 case elfcpp::R_SPARC_HH22
:
1649 case elfcpp::R_SPARC_HM10
:
1650 case elfcpp::R_SPARC_LM22
:
1651 case elfcpp::R_SPARC_UA64
:
1652 case elfcpp::R_SPARC_UA32
:
1653 case elfcpp::R_SPARC_UA16
:
1654 case elfcpp::R_SPARC_HI22
:
1655 case elfcpp::R_SPARC_LO10
:
1656 case elfcpp::R_SPARC_OLO10
:
1657 case elfcpp::R_SPARC_16
:
1658 case elfcpp::R_SPARC_11
:
1659 case elfcpp::R_SPARC_10
:
1660 case elfcpp::R_SPARC_8
:
1661 case elfcpp::R_SPARC_7
:
1662 case elfcpp::R_SPARC_6
:
1663 case elfcpp::R_SPARC_5
:
1664 // If building a shared library (or a position-independent
1665 // executable), we need to create a dynamic relocation for
1667 if (parameters
->options().output_is_position_independent())
1669 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1671 check_non_pic(object
, r_type
);
1672 if (lsym
.get_st_type() != elfcpp::STT_SECTION
)
1674 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1675 rela_dyn
->add_local(object
, r_sym
, orig_r_type
, output_section
,
1676 data_shndx
, reloc
.get_r_offset(),
1677 reloc
.get_r_addend());
1681 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1682 gold_assert(lsym
.get_st_value() == 0);
1683 rela_dyn
->add_local_relative(object
, r_sym
, orig_r_type
,
1684 output_section
, data_shndx
,
1685 reloc
.get_r_offset(),
1686 reloc
.get_r_addend());
1691 case elfcpp::R_SPARC_WDISP30
:
1692 case elfcpp::R_SPARC_WDISP22
:
1693 case elfcpp::R_SPARC_WDISP19
:
1694 case elfcpp::R_SPARC_WDISP16
:
1695 case elfcpp::R_SPARC_DISP8
:
1696 case elfcpp::R_SPARC_DISP16
:
1697 case elfcpp::R_SPARC_DISP32
:
1698 case elfcpp::R_SPARC_DISP64
:
1699 case elfcpp::R_SPARC_PC10
:
1700 case elfcpp::R_SPARC_PC22
:
1703 case elfcpp::R_SPARC_GOT10
:
1704 case elfcpp::R_SPARC_GOT13
:
1705 case elfcpp::R_SPARC_GOT22
:
1707 // The symbol requires a GOT entry.
1708 Output_data_got
<size
, big_endian
>* got
;
1711 got
= target
->got_section(symtab
, layout
);
1712 r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1714 // If we are generating a shared object, we need to add a
1715 // dynamic relocation for this symbol's GOT entry.
1716 if (parameters
->options().output_is_position_independent())
1718 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
))
1720 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1723 off
= got
->add_constant(0);
1724 object
->set_local_got_offset(r_sym
, GOT_TYPE_STANDARD
, off
);
1725 rela_dyn
->add_local_relative(object
, r_sym
,
1726 elfcpp::R_SPARC_RELATIVE
,
1731 got
->add_local(object
, r_sym
, GOT_TYPE_STANDARD
);
1735 // These are initial TLS relocs, which are expected when
1737 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
1738 case elfcpp::R_SPARC_TLS_GD_LO10
:
1739 case elfcpp::R_SPARC_TLS_GD_ADD
:
1740 case elfcpp::R_SPARC_TLS_GD_CALL
:
1741 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
1742 case elfcpp::R_SPARC_TLS_LDM_LO10
:
1743 case elfcpp::R_SPARC_TLS_LDM_ADD
:
1744 case elfcpp::R_SPARC_TLS_LDM_CALL
:
1745 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
1746 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
1747 case elfcpp::R_SPARC_TLS_LDO_ADD
:
1748 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
1749 case elfcpp::R_SPARC_TLS_IE_LO10
:
1750 case elfcpp::R_SPARC_TLS_IE_LD
:
1751 case elfcpp::R_SPARC_TLS_IE_LDX
:
1752 case elfcpp::R_SPARC_TLS_IE_ADD
:
1753 case elfcpp::R_SPARC_TLS_LE_HIX22
: // Local-exec
1754 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1756 bool output_is_shared
= parameters
->options().shared();
1757 const tls::Tls_optimization optimized_type
1758 = optimize_tls_reloc(!output_is_shared
, r_type
);
1761 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
1762 case elfcpp::R_SPARC_TLS_GD_LO10
:
1763 case elfcpp::R_SPARC_TLS_GD_ADD
:
1764 case elfcpp::R_SPARC_TLS_GD_CALL
:
1765 if (optimized_type
== tls::TLSOPT_NONE
)
1767 // Create a pair of GOT entries for the module index and
1768 // dtv-relative offset.
1769 Output_data_got
<size
, big_endian
>* got
1770 = target
->got_section(symtab
, layout
);
1771 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1772 unsigned int shndx
= lsym
.get_st_shndx();
1774 shndx
= object
->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
1776 object
->error(_("local symbol %u has bad shndx %u"),
1779 got
->add_local_pair_with_rela(object
, r_sym
,
1780 lsym
.get_st_shndx(),
1782 target
->rela_dyn_section(layout
),
1784 ? elfcpp::R_SPARC_TLS_DTPMOD64
1785 : elfcpp::R_SPARC_TLS_DTPMOD32
),
1787 if (r_type
== elfcpp::R_SPARC_TLS_GD_CALL
)
1788 generate_tls_call(symtab
, layout
, target
);
1790 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
1791 unsupported_reloc_local(object
, r_type
);
1794 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
1795 case elfcpp::R_SPARC_TLS_LDM_LO10
:
1796 case elfcpp::R_SPARC_TLS_LDM_ADD
:
1797 case elfcpp::R_SPARC_TLS_LDM_CALL
:
1798 if (optimized_type
== tls::TLSOPT_NONE
)
1800 // Create a GOT entry for the module index.
1801 target
->got_mod_index_entry(symtab
, layout
, object
);
1803 if (r_type
== elfcpp::R_SPARC_TLS_LDM_CALL
)
1804 generate_tls_call(symtab
, layout
, target
);
1806 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
1807 unsupported_reloc_local(object
, r_type
);
1810 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
1811 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
1812 case elfcpp::R_SPARC_TLS_LDO_ADD
:
1815 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
1816 case elfcpp::R_SPARC_TLS_IE_LO10
:
1817 case elfcpp::R_SPARC_TLS_IE_LD
:
1818 case elfcpp::R_SPARC_TLS_IE_LDX
:
1819 case elfcpp::R_SPARC_TLS_IE_ADD
:
1820 layout
->set_has_static_tls();
1821 if (optimized_type
== tls::TLSOPT_NONE
)
1823 // Create a GOT entry for the tp-relative offset.
1824 Output_data_got
<size
, big_endian
>* got
1825 = target
->got_section(symtab
, layout
);
1826 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1828 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_TLS_OFFSET
))
1830 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1831 unsigned int off
= got
->add_constant(0);
1833 object
->set_local_got_offset(r_sym
, GOT_TYPE_TLS_OFFSET
,
1835 rela_dyn
->add_local_relative(object
, r_sym
,
1837 elfcpp::R_SPARC_TLS_TPOFF64
:
1838 elfcpp::R_SPARC_TLS_TPOFF32
),
1842 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
1843 unsupported_reloc_local(object
, r_type
);
1846 case elfcpp::R_SPARC_TLS_LE_HIX22
: // Local-exec
1847 case elfcpp::R_SPARC_TLS_LE_LOX10
:
1848 layout
->set_has_static_tls();
1849 if (output_is_shared
)
1851 // We need to create a dynamic relocation.
1852 gold_assert(lsym
.get_st_type() != elfcpp::STT_SECTION
);
1853 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
1854 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1855 rela_dyn
->add_local_relative(object
, r_sym
, r_type
,
1856 output_section
, data_shndx
,
1857 reloc
.get_r_offset(), 0);
1864 // These are relocations which should only be seen by the
1865 // dynamic linker, and should never be seen here.
1866 case elfcpp::R_SPARC_COPY
:
1867 case elfcpp::R_SPARC_GLOB_DAT
:
1868 case elfcpp::R_SPARC_JMP_SLOT
:
1869 case elfcpp::R_SPARC_RELATIVE
:
1870 case elfcpp::R_SPARC_TLS_DTPMOD64
:
1871 case elfcpp::R_SPARC_TLS_DTPMOD32
:
1872 case elfcpp::R_SPARC_TLS_DTPOFF64
:
1873 case elfcpp::R_SPARC_TLS_DTPOFF32
:
1874 case elfcpp::R_SPARC_TLS_TPOFF64
:
1875 case elfcpp::R_SPARC_TLS_TPOFF32
:
1876 gold_error(_("%s: unexpected reloc %u in object file"),
1877 object
->name().c_str(), r_type
);
1881 unsupported_reloc_local(object
, r_type
);
1886 // Report an unsupported relocation against a global symbol.
1888 template<int size
, bool big_endian
>
1890 Target_sparc
<size
, big_endian
>::Scan::unsupported_reloc_global(
1891 Sized_relobj
<size
, big_endian
>* object
,
1892 unsigned int r_type
,
1895 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
1896 object
->name().c_str(), r_type
, gsym
->demangled_name().c_str());
1899 // Scan a relocation for a global symbol.
1901 template<int size
, bool big_endian
>
1903 Target_sparc
<size
, big_endian
>::Scan::global(
1904 const General_options
&,
1905 Symbol_table
* symtab
,
1907 Target_sparc
<size
, big_endian
>* target
,
1908 Sized_relobj
<size
, big_endian
>* object
,
1909 unsigned int data_shndx
,
1910 Output_section
* output_section
,
1911 const elfcpp::Rela
<size
, big_endian
>& reloc
,
1912 unsigned int r_type
,
1915 unsigned int orig_r_type
= r_type
;
1917 // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got
1918 // section. We check here to avoid creating a dynamic reloc against
1919 // _GLOBAL_OFFSET_TABLE_.
1920 if (!target
->has_got_section()
1921 && strcmp(gsym
->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
1922 target
->got_section(symtab
, layout
);
1927 case elfcpp::R_SPARC_NONE
:
1928 case elfcpp::R_SPARC_REGISTER
:
1929 case elfcpp::R_SPARC_GNU_VTINHERIT
:
1930 case elfcpp::R_SPARC_GNU_VTENTRY
:
1933 case elfcpp::R_SPARC_PLT64
:
1934 case elfcpp::R_SPARC_PLT32
:
1935 case elfcpp::R_SPARC_HIPLT22
:
1936 case elfcpp::R_SPARC_LOPLT10
:
1937 case elfcpp::R_SPARC_PCPLT32
:
1938 case elfcpp::R_SPARC_PCPLT22
:
1939 case elfcpp::R_SPARC_PCPLT10
:
1940 case elfcpp::R_SPARC_WPLT30
:
1941 // If the symbol is fully resolved, this is just a PC32 reloc.
1942 // Otherwise we need a PLT entry.
1943 if (gsym
->final_value_is_known())
1945 // If building a shared library, we can also skip the PLT entry
1946 // if the symbol is defined in the output file and is protected
1948 if (gsym
->is_defined()
1949 && !gsym
->is_from_dynobj()
1950 && !gsym
->is_preemptible())
1952 target
->make_plt_entry(symtab
, layout
, gsym
);
1955 case elfcpp::R_SPARC_DISP8
:
1956 case elfcpp::R_SPARC_DISP16
:
1957 case elfcpp::R_SPARC_DISP32
:
1958 case elfcpp::R_SPARC_DISP64
:
1959 case elfcpp::R_SPARC_PC_HH22
:
1960 case elfcpp::R_SPARC_PC_HM10
:
1961 case elfcpp::R_SPARC_PC_LM22
:
1962 case elfcpp::R_SPARC_PC10
:
1963 case elfcpp::R_SPARC_PC22
:
1964 case elfcpp::R_SPARC_WDISP30
:
1965 case elfcpp::R_SPARC_WDISP22
:
1966 case elfcpp::R_SPARC_WDISP19
:
1967 case elfcpp::R_SPARC_WDISP16
:
1969 if (gsym
->needs_plt_entry())
1970 target
->make_plt_entry(symtab
, layout
, gsym
);
1971 // Make a dynamic relocation if necessary.
1972 int flags
= Symbol::NON_PIC_REF
;
1973 if (gsym
->type() == elfcpp::STT_FUNC
)
1974 flags
|= Symbol::FUNCTION_CALL
;
1975 if (gsym
->needs_dynamic_reloc(flags
))
1977 if (gsym
->may_need_copy_reloc())
1979 target
->copy_reloc(symtab
, layout
, object
,
1980 data_shndx
, output_section
, gsym
,
1985 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
1986 check_non_pic(object
, r_type
);
1987 rela_dyn
->add_global(gsym
, orig_r_type
, output_section
, object
,
1988 data_shndx
, reloc
.get_r_offset(),
1989 reloc
.get_r_addend());
1995 case elfcpp::R_SPARC_UA64
:
1996 case elfcpp::R_SPARC_64
:
1997 case elfcpp::R_SPARC_HIX22
:
1998 case elfcpp::R_SPARC_LOX10
:
1999 case elfcpp::R_SPARC_H44
:
2000 case elfcpp::R_SPARC_M44
:
2001 case elfcpp::R_SPARC_L44
:
2002 case elfcpp::R_SPARC_HH22
:
2003 case elfcpp::R_SPARC_HM10
:
2004 case elfcpp::R_SPARC_LM22
:
2005 case elfcpp::R_SPARC_HI22
:
2006 case elfcpp::R_SPARC_LO10
:
2007 case elfcpp::R_SPARC_OLO10
:
2008 case elfcpp::R_SPARC_UA32
:
2009 case elfcpp::R_SPARC_32
:
2010 case elfcpp::R_SPARC_UA16
:
2011 case elfcpp::R_SPARC_16
:
2012 case elfcpp::R_SPARC_11
:
2013 case elfcpp::R_SPARC_10
:
2014 case elfcpp::R_SPARC_8
:
2015 case elfcpp::R_SPARC_7
:
2016 case elfcpp::R_SPARC_6
:
2017 case elfcpp::R_SPARC_5
:
2019 // Make a PLT entry if necessary.
2020 if (gsym
->needs_plt_entry())
2022 target
->make_plt_entry(symtab
, layout
, gsym
);
2023 // Since this is not a PC-relative relocation, we may be
2024 // taking the address of a function. In that case we need to
2025 // set the entry in the dynamic symbol table to the address of
2027 if (gsym
->is_from_dynobj() && !parameters
->options().shared())
2028 gsym
->set_needs_dynsym_value();
2030 // Make a dynamic relocation if necessary.
2031 if (gsym
->needs_dynamic_reloc(Symbol::ABSOLUTE_REF
))
2033 if (gsym
->may_need_copy_reloc())
2035 target
->copy_reloc(symtab
, layout
, object
,
2036 data_shndx
, output_section
, gsym
, reloc
);
2038 else if ((r_type
== elfcpp::R_SPARC_32
2039 || r_type
== elfcpp::R_SPARC_64
)
2040 && gsym
->can_use_relative_reloc(false))
2042 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2043 rela_dyn
->add_global_relative(gsym
, elfcpp::R_SPARC_RELATIVE
,
2044 output_section
, object
,
2045 data_shndx
, reloc
.get_r_offset(),
2046 reloc
.get_r_addend());
2050 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2052 check_non_pic(object
, r_type
);
2053 if (gsym
->is_from_dynobj()
2054 || gsym
->is_undefined()
2055 || gsym
->is_preemptible())
2056 rela_dyn
->add_global(gsym
, orig_r_type
, output_section
,
2058 reloc
.get_r_offset(),
2059 reloc
.get_r_addend());
2061 rela_dyn
->add_global_relative(gsym
, orig_r_type
,
2062 output_section
, object
,
2064 reloc
.get_r_offset(),
2065 reloc
.get_r_addend());
2071 case elfcpp::R_SPARC_GOT10
:
2072 case elfcpp::R_SPARC_GOT13
:
2073 case elfcpp::R_SPARC_GOT22
:
2075 // The symbol requires a GOT entry.
2076 Output_data_got
<size
, big_endian
>* got
;
2078 got
= target
->got_section(symtab
, layout
);
2079 if (gsym
->final_value_is_known())
2080 got
->add_global(gsym
, GOT_TYPE_STANDARD
);
2083 // If this symbol is not fully resolved, we need to add a
2084 // dynamic relocation for it.
2085 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2086 if (gsym
->is_from_dynobj()
2087 || gsym
->is_undefined()
2088 || gsym
->is_preemptible())
2089 got
->add_global_with_rela(gsym
, GOT_TYPE_STANDARD
, rela_dyn
,
2090 elfcpp::R_SPARC_GLOB_DAT
);
2091 else if (!gsym
->has_got_offset(GOT_TYPE_STANDARD
))
2093 unsigned int off
= got
->add_constant(0);
2095 gsym
->set_got_offset(GOT_TYPE_STANDARD
, off
);
2096 rela_dyn
->add_global_relative(gsym
, elfcpp::R_SPARC_RELATIVE
,
2103 // These are initial tls relocs, which are expected when
2105 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
2106 case elfcpp::R_SPARC_TLS_GD_LO10
:
2107 case elfcpp::R_SPARC_TLS_GD_ADD
:
2108 case elfcpp::R_SPARC_TLS_GD_CALL
:
2109 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
2110 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2111 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2112 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2113 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
2114 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
2115 case elfcpp::R_SPARC_TLS_LDO_ADD
:
2116 case elfcpp::R_SPARC_TLS_LE_HIX22
:
2117 case elfcpp::R_SPARC_TLS_LE_LOX10
:
2118 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
2119 case elfcpp::R_SPARC_TLS_IE_LO10
:
2120 case elfcpp::R_SPARC_TLS_IE_LD
:
2121 case elfcpp::R_SPARC_TLS_IE_LDX
:
2122 case elfcpp::R_SPARC_TLS_IE_ADD
:
2124 const bool is_final
= gsym
->final_value_is_known();
2125 const tls::Tls_optimization optimized_type
2126 = optimize_tls_reloc(is_final
, r_type
);
2129 case elfcpp::R_SPARC_TLS_GD_HI22
: // Global-dynamic
2130 case elfcpp::R_SPARC_TLS_GD_LO10
:
2131 case elfcpp::R_SPARC_TLS_GD_ADD
:
2132 case elfcpp::R_SPARC_TLS_GD_CALL
:
2133 if (optimized_type
== tls::TLSOPT_NONE
)
2135 // Create a pair of GOT entries for the module index and
2136 // dtv-relative offset.
2137 Output_data_got
<size
, big_endian
>* got
2138 = target
->got_section(symtab
, layout
);
2139 got
->add_global_pair_with_rela(gsym
, GOT_TYPE_TLS_PAIR
,
2140 target
->rela_dyn_section(layout
),
2142 elfcpp::R_SPARC_TLS_DTPMOD64
:
2143 elfcpp::R_SPARC_TLS_DTPMOD32
),
2145 elfcpp::R_SPARC_TLS_DTPOFF64
:
2146 elfcpp::R_SPARC_TLS_DTPOFF32
));
2148 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2149 if (r_type
== elfcpp::R_SPARC_TLS_GD_CALL
)
2150 generate_tls_call(symtab
, layout
, target
);
2152 else if (optimized_type
== tls::TLSOPT_TO_IE
)
2154 // Create a GOT entry for the tp-relative offset.
2155 Output_data_got
<size
, big_endian
>* got
2156 = target
->got_section(symtab
, layout
);
2157 got
->add_global_with_rela(gsym
, GOT_TYPE_TLS_OFFSET
,
2158 target
->rela_dyn_section(layout
),
2160 elfcpp::R_SPARC_TLS_TPOFF64
:
2161 elfcpp::R_SPARC_TLS_TPOFF32
));
2163 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
2164 unsupported_reloc_global(object
, r_type
, gsym
);
2167 case elfcpp::R_SPARC_TLS_LDM_HI22
: // Local-dynamic
2168 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2169 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2170 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2171 if (optimized_type
== tls::TLSOPT_NONE
)
2173 // Create a GOT entry for the module index.
2174 target
->got_mod_index_entry(symtab
, layout
, object
);
2176 if (r_type
== elfcpp::R_SPARC_TLS_LDM_CALL
)
2177 generate_tls_call(symtab
, layout
, target
);
2179 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
2180 unsupported_reloc_global(object
, r_type
, gsym
);
2183 case elfcpp::R_SPARC_TLS_LDO_HIX22
: // Alternate local-dynamic
2184 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
2185 case elfcpp::R_SPARC_TLS_LDO_ADD
:
2188 case elfcpp::R_SPARC_TLS_LE_HIX22
:
2189 case elfcpp::R_SPARC_TLS_LE_LOX10
:
2190 layout
->set_has_static_tls();
2191 if (parameters
->options().shared())
2193 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2194 rela_dyn
->add_global_relative(gsym
, orig_r_type
,
2195 output_section
, object
,
2196 data_shndx
, reloc
.get_r_offset(),
2201 case elfcpp::R_SPARC_TLS_IE_HI22
: // Initial-exec
2202 case elfcpp::R_SPARC_TLS_IE_LO10
:
2203 case elfcpp::R_SPARC_TLS_IE_LD
:
2204 case elfcpp::R_SPARC_TLS_IE_LDX
:
2205 case elfcpp::R_SPARC_TLS_IE_ADD
:
2206 layout
->set_has_static_tls();
2207 if (optimized_type
== tls::TLSOPT_NONE
)
2209 // Create a GOT entry for the tp-relative offset.
2210 Output_data_got
<size
, big_endian
>* got
2211 = target
->got_section(symtab
, layout
);
2212 got
->add_global_with_rela(gsym
, GOT_TYPE_TLS_OFFSET
,
2213 target
->rela_dyn_section(layout
),
2215 elfcpp::R_SPARC_TLS_TPOFF64
:
2216 elfcpp::R_SPARC_TLS_TPOFF32
));
2218 else if (optimized_type
!= tls::TLSOPT_TO_LE
)
2219 unsupported_reloc_global(object
, r_type
, gsym
);
2225 // These are relocations which should only be seen by the
2226 // dynamic linker, and should never be seen here.
2227 case elfcpp::R_SPARC_COPY
:
2228 case elfcpp::R_SPARC_GLOB_DAT
:
2229 case elfcpp::R_SPARC_JMP_SLOT
:
2230 case elfcpp::R_SPARC_RELATIVE
:
2231 case elfcpp::R_SPARC_TLS_DTPMOD64
:
2232 case elfcpp::R_SPARC_TLS_DTPMOD32
:
2233 case elfcpp::R_SPARC_TLS_DTPOFF64
:
2234 case elfcpp::R_SPARC_TLS_DTPOFF32
:
2235 case elfcpp::R_SPARC_TLS_TPOFF64
:
2236 case elfcpp::R_SPARC_TLS_TPOFF32
:
2237 gold_error(_("%s: unexpected reloc %u in object file"),
2238 object
->name().c_str(), r_type
);
2242 unsupported_reloc_global(object
, r_type
, gsym
);
2247 // Process relocations for gc.
2249 template<int size
, bool big_endian
>
2251 Target_sparc
<size
, big_endian
>::gc_process_relocs(
2252 const General_options
& options
,
2253 Symbol_table
* symtab
,
2255 Sized_relobj
<size
, big_endian
>* object
,
2256 unsigned int data_shndx
,
2258 const unsigned char* prelocs
,
2260 Output_section
* output_section
,
2261 bool needs_special_offset_handling
,
2262 size_t local_symbol_count
,
2263 const unsigned char* plocal_symbols
)
2265 typedef Target_sparc
<size
, big_endian
> Sparc
;
2266 typedef typename Target_sparc
<size
, big_endian
>::Scan Scan
;
2268 gold::gc_process_relocs
<size
, big_endian
, Sparc
, elfcpp::SHT_RELA
, Scan
>(
2278 needs_special_offset_handling
,
2283 // Scan relocations for a section.
2285 template<int size
, bool big_endian
>
2287 Target_sparc
<size
, big_endian
>::scan_relocs(
2288 const General_options
& options
,
2289 Symbol_table
* symtab
,
2291 Sized_relobj
<size
, big_endian
>* object
,
2292 unsigned int data_shndx
,
2293 unsigned int sh_type
,
2294 const unsigned char* prelocs
,
2296 Output_section
* output_section
,
2297 bool needs_special_offset_handling
,
2298 size_t local_symbol_count
,
2299 const unsigned char* plocal_symbols
)
2301 typedef Target_sparc
<size
, big_endian
> Sparc
;
2302 typedef typename Target_sparc
<size
, big_endian
>::Scan Scan
;
2304 if (sh_type
== elfcpp::SHT_REL
)
2306 gold_error(_("%s: unsupported REL reloc section"),
2307 object
->name().c_str());
2311 gold::scan_relocs
<size
, big_endian
, Sparc
, elfcpp::SHT_RELA
, Scan
>(
2321 needs_special_offset_handling
,
2326 // Finalize the sections.
2328 template<int size
, bool big_endian
>
2330 Target_sparc
<size
, big_endian
>::do_finalize_sections(Layout
* layout
)
2332 // Fill in some more dynamic tags.
2333 Output_data_dynamic
* const odyn
= layout
->dynamic_data();
2336 if (this->plt_
!= NULL
)
2338 const Output_data
* od
= this->plt_
->rel_plt();
2339 odyn
->add_section_size(elfcpp::DT_PLTRELSZ
, od
);
2340 odyn
->add_section_address(elfcpp::DT_JMPREL
, od
);
2341 odyn
->add_constant(elfcpp::DT_PLTREL
, elfcpp::DT_RELA
);
2343 odyn
->add_section_address(elfcpp::DT_PLTGOT
, this->plt_
);
2346 if (this->rela_dyn_
!= NULL
)
2348 const Output_data
* od
= this->rela_dyn_
;
2349 odyn
->add_section_address(elfcpp::DT_RELA
, od
);
2350 odyn
->add_section_size(elfcpp::DT_RELASZ
, od
);
2351 odyn
->add_constant(elfcpp::DT_RELAENT
,
2352 elfcpp::Elf_sizes
<size
>::rela_size
);
2355 if (!parameters
->options().shared())
2357 // The value of the DT_DEBUG tag is filled in by the dynamic
2358 // linker at run time, and used by the debugger.
2359 odyn
->add_constant(elfcpp::DT_DEBUG
, 0);
2363 // Emit any relocs we saved in an attempt to avoid generating COPY
2365 if (this->copy_relocs_
.any_saved_relocs())
2366 this->copy_relocs_
.emit(this->rela_dyn_section(layout
));
2369 // Perform a relocation.
2371 template<int size
, bool big_endian
>
2373 Target_sparc
<size
, big_endian
>::Relocate::relocate(
2374 const Relocate_info
<size
, big_endian
>* relinfo
,
2375 Target_sparc
* target
,
2378 const elfcpp::Rela
<size
, big_endian
>& rela
,
2379 unsigned int r_type
,
2380 const Sized_symbol
<size
>* gsym
,
2381 const Symbol_value
<size
>* psymval
,
2382 unsigned char* view
,
2383 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
,
2384 section_size_type view_size
)
2388 if (this->ignore_gd_add_
)
2390 if (r_type
!= elfcpp::R_SPARC_TLS_GD_ADD
)
2391 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2392 _("missing expected TLS relocation"));
2395 this->ignore_gd_add_
= false;
2400 typedef Sparc_relocate_functions
<size
, big_endian
> Reloc
;
2402 // Pick the value to use for symbols defined in shared objects.
2403 Symbol_value
<size
> symval
;
2405 && gsym
->use_plt_offset(r_type
== elfcpp::R_SPARC_DISP8
2406 || r_type
== elfcpp::R_SPARC_DISP16
2407 || r_type
== elfcpp::R_SPARC_DISP32
2408 || r_type
== elfcpp::R_SPARC_DISP64
2409 || r_type
== elfcpp::R_SPARC_PC_HH22
2410 || r_type
== elfcpp::R_SPARC_PC_HM10
2411 || r_type
== elfcpp::R_SPARC_PC_LM22
2412 || r_type
== elfcpp::R_SPARC_PC10
2413 || r_type
== elfcpp::R_SPARC_PC22
2414 || r_type
== elfcpp::R_SPARC_WDISP30
2415 || r_type
== elfcpp::R_SPARC_WDISP22
2416 || r_type
== elfcpp::R_SPARC_WDISP19
2417 || r_type
== elfcpp::R_SPARC_WDISP16
))
2419 elfcpp::Elf_Xword value
;
2421 value
= target
->plt_section()->address() + gsym
->plt_offset();
2423 symval
.set_output_value(value
);
2428 const Sized_relobj
<size
, big_endian
>* object
= relinfo
->object
;
2429 const elfcpp::Elf_Xword addend
= rela
.get_r_addend();
2431 // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT
2432 // pointer points to the beginning, not the end, of the table.
2433 // So we just use the plain offset.
2434 bool have_got_offset
= false;
2435 unsigned int got_offset
= 0;
2438 case elfcpp::R_SPARC_GOT10
:
2439 case elfcpp::R_SPARC_GOT13
:
2440 case elfcpp::R_SPARC_GOT22
:
2443 gold_assert(gsym
->has_got_offset(GOT_TYPE_STANDARD
));
2444 got_offset
= gsym
->got_offset(GOT_TYPE_STANDARD
);
2448 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
2449 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
));
2450 got_offset
= object
->local_got_offset(r_sym
, GOT_TYPE_STANDARD
);
2452 have_got_offset
= true;
2461 case elfcpp::R_SPARC_NONE
:
2462 case elfcpp::R_SPARC_REGISTER
:
2463 case elfcpp::R_SPARC_GNU_VTINHERIT
:
2464 case elfcpp::R_SPARC_GNU_VTENTRY
:
2467 case elfcpp::R_SPARC_8
:
2468 Relocate_functions
<size
, big_endian
>::rela8(view
, object
,
2472 case elfcpp::R_SPARC_16
:
2473 Relocate_functions
<size
, big_endian
>::rela16(view
, object
,
2477 case elfcpp::R_SPARC_32
:
2478 if (!parameters
->options().output_is_position_independent())
2479 Relocate_functions
<size
, big_endian
>::rela32(view
, object
,
2483 case elfcpp::R_SPARC_DISP8
:
2484 Reloc::disp8(view
, object
, psymval
, addend
, address
);
2487 case elfcpp::R_SPARC_DISP16
:
2488 Reloc::disp16(view
, object
, psymval
, addend
, address
);
2491 case elfcpp::R_SPARC_DISP32
:
2492 Reloc::disp32(view
, object
, psymval
, addend
, address
);
2495 case elfcpp::R_SPARC_DISP64
:
2496 Reloc::disp64(view
, object
, psymval
, addend
, address
);
2499 case elfcpp::R_SPARC_WDISP30
:
2500 case elfcpp::R_SPARC_WPLT30
:
2501 Reloc::wdisp30(view
, object
, psymval
, addend
, address
);
2504 case elfcpp::R_SPARC_WDISP22
:
2505 Reloc::wdisp22(view
, object
, psymval
, addend
, address
);
2508 case elfcpp::R_SPARC_WDISP19
:
2509 Reloc::wdisp19(view
, object
, psymval
, addend
, address
);
2512 case elfcpp::R_SPARC_WDISP16
:
2513 Reloc::wdisp16(view
, object
, psymval
, addend
, address
);
2516 case elfcpp::R_SPARC_HI22
:
2517 Reloc::hi22(view
, object
, psymval
, addend
);
2520 case elfcpp::R_SPARC_22
:
2521 Reloc::rela32_22(view
, object
, psymval
, addend
);
2524 case elfcpp::R_SPARC_13
:
2525 Reloc::rela32_13(view
, object
, psymval
, addend
);
2528 case elfcpp::R_SPARC_LO10
:
2529 Reloc::lo10(view
, object
, psymval
, addend
);
2532 case elfcpp::R_SPARC_GOT10
:
2533 Reloc::lo10(view
, got_offset
, addend
);
2536 case elfcpp::R_SPARC_GOT13
:
2537 Reloc::rela32_13(view
, got_offset
, addend
);
2540 case elfcpp::R_SPARC_GOT22
:
2541 Reloc::hi22(view
, got_offset
, addend
);
2544 case elfcpp::R_SPARC_PC10
:
2545 Reloc::pc10(view
, object
, psymval
, addend
, address
);
2548 case elfcpp::R_SPARC_PC22
:
2549 Reloc::pc22(view
, object
, psymval
, addend
, address
);
2552 case elfcpp::R_SPARC_TLS_DTPOFF32
:
2553 case elfcpp::R_SPARC_UA32
:
2554 Reloc::ua32(view
, object
, psymval
, addend
);
2557 case elfcpp::R_SPARC_PLT64
:
2558 Relocate_functions
<size
, big_endian
>::rela64(view
, object
,
2562 case elfcpp::R_SPARC_PLT32
:
2563 Relocate_functions
<size
, big_endian
>::rela32(view
, object
,
2567 case elfcpp::R_SPARC_HIPLT22
:
2568 Reloc::hi22(view
, object
, psymval
, addend
);
2571 case elfcpp::R_SPARC_LOPLT10
:
2572 Reloc::lo10(view
, object
, psymval
, addend
);
2575 case elfcpp::R_SPARC_PCPLT32
:
2576 Reloc::disp32(view
, object
, psymval
, addend
, address
);
2579 case elfcpp::R_SPARC_PCPLT22
:
2580 Reloc::pcplt22(view
, object
, psymval
, addend
, address
);
2583 case elfcpp::R_SPARC_PCPLT10
:
2584 Reloc::lo10(view
, object
, psymval
, addend
, address
);
2587 case elfcpp::R_SPARC_64
:
2588 if (!parameters
->options().output_is_position_independent())
2589 Relocate_functions
<size
, big_endian
>::rela64(view
, object
,
2593 case elfcpp::R_SPARC_OLO10
:
2595 unsigned int addend2
= rela
.get_r_info() & 0xffffffff;
2596 addend2
= ((addend2
>> 8) ^ 0x800000) - 0x800000;
2597 Reloc::olo10(view
, object
, psymval
, addend
, addend2
);
2601 case elfcpp::R_SPARC_HH22
:
2602 Reloc::hh22(view
, object
, psymval
, addend
);
2605 case elfcpp::R_SPARC_PC_HH22
:
2606 Reloc::pc_hh22(view
, object
, psymval
, addend
, address
);
2609 case elfcpp::R_SPARC_HM10
:
2610 Reloc::hm10(view
, object
, psymval
, addend
);
2613 case elfcpp::R_SPARC_PC_HM10
:
2614 Reloc::pc_hm10(view
, object
, psymval
, addend
, address
);
2617 case elfcpp::R_SPARC_LM22
:
2618 Reloc::hi22(view
, object
, psymval
, addend
);
2621 case elfcpp::R_SPARC_PC_LM22
:
2622 Reloc::pcplt22(view
, object
, psymval
, addend
, address
);
2625 case elfcpp::R_SPARC_11
:
2626 Reloc::rela32_11(view
, object
, psymval
, addend
);
2629 case elfcpp::R_SPARC_10
:
2630 Reloc::rela32_10(view
, object
, psymval
, addend
);
2633 case elfcpp::R_SPARC_7
:
2634 Reloc::rela32_7(view
, object
, psymval
, addend
);
2637 case elfcpp::R_SPARC_6
:
2638 Reloc::rela32_6(view
, object
, psymval
, addend
);
2641 case elfcpp::R_SPARC_5
:
2642 Reloc::rela32_5(view
, object
, psymval
, addend
);
2645 case elfcpp::R_SPARC_HIX22
:
2646 Reloc::hix22(view
, object
, psymval
, addend
);
2649 case elfcpp::R_SPARC_LOX10
:
2650 Reloc::lox10(view
, object
, psymval
, addend
);
2653 case elfcpp::R_SPARC_H44
:
2654 Reloc::h44(view
, object
, psymval
, addend
);
2657 case elfcpp::R_SPARC_M44
:
2658 Reloc::m44(view
, object
, psymval
, addend
);
2661 case elfcpp::R_SPARC_L44
:
2662 Reloc::l44(view
, object
, psymval
, addend
);
2665 case elfcpp::R_SPARC_TLS_DTPOFF64
:
2666 case elfcpp::R_SPARC_UA64
:
2667 Reloc::ua64(view
, object
, psymval
, addend
);
2670 case elfcpp::R_SPARC_UA16
:
2671 Reloc::ua16(view
, object
, psymval
, addend
);
2674 case elfcpp::R_SPARC_TLS_GD_HI22
:
2675 case elfcpp::R_SPARC_TLS_GD_LO10
:
2676 case elfcpp::R_SPARC_TLS_GD_ADD
:
2677 case elfcpp::R_SPARC_TLS_GD_CALL
:
2678 case elfcpp::R_SPARC_TLS_LDM_HI22
:
2679 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2680 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2681 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2682 case elfcpp::R_SPARC_TLS_LDO_HIX22
:
2683 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
2684 case elfcpp::R_SPARC_TLS_LDO_ADD
:
2685 case elfcpp::R_SPARC_TLS_IE_HI22
:
2686 case elfcpp::R_SPARC_TLS_IE_LO10
:
2687 case elfcpp::R_SPARC_TLS_IE_LD
:
2688 case elfcpp::R_SPARC_TLS_IE_LDX
:
2689 case elfcpp::R_SPARC_TLS_IE_ADD
:
2690 case elfcpp::R_SPARC_TLS_LE_HIX22
:
2691 case elfcpp::R_SPARC_TLS_LE_LOX10
:
2692 this->relocate_tls(relinfo
, target
, relnum
, rela
,
2693 r_type
, gsym
, psymval
, view
,
2694 address
, view_size
);
2697 case elfcpp::R_SPARC_COPY
:
2698 case elfcpp::R_SPARC_GLOB_DAT
:
2699 case elfcpp::R_SPARC_JMP_SLOT
:
2700 case elfcpp::R_SPARC_RELATIVE
:
2701 // These are outstanding tls relocs, which are unexpected when
2703 case elfcpp::R_SPARC_TLS_DTPMOD64
:
2704 case elfcpp::R_SPARC_TLS_DTPMOD32
:
2705 case elfcpp::R_SPARC_TLS_TPOFF64
:
2706 case elfcpp::R_SPARC_TLS_TPOFF32
:
2707 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2708 _("unexpected reloc %u in object file"),
2713 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2714 _("unsupported reloc %u"),
2722 // Perform a TLS relocation.
2724 template<int size
, bool big_endian
>
2726 Target_sparc
<size
, big_endian
>::Relocate::relocate_tls(
2727 const Relocate_info
<size
, big_endian
>* relinfo
,
2728 Target_sparc
<size
, big_endian
>* target
,
2730 const elfcpp::Rela
<size
, big_endian
>& rela
,
2731 unsigned int r_type
,
2732 const Sized_symbol
<size
>* gsym
,
2733 const Symbol_value
<size
>* psymval
,
2734 unsigned char* view
,
2735 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
,
2738 Output_segment
* tls_segment
= relinfo
->layout
->tls_segment();
2739 typedef Sparc_relocate_functions
<size
, big_endian
> Reloc
;
2740 const Sized_relobj
<size
, big_endian
>* object
= relinfo
->object
;
2741 typedef typename
elfcpp::Swap
<32, true>::Valtype Insntype
;
2743 const elfcpp::Elf_Xword addend
= rela
.get_r_addend();
2744 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
= psymval
->value(object
, 0);
2746 const bool is_final
=
2748 ? !parameters
->options().output_is_position_independent()
2749 : gsym
->final_value_is_known());
2750 const tls::Tls_optimization optimized_type
2751 = optimize_tls_reloc(is_final
, r_type
);
2755 case elfcpp::R_SPARC_TLS_GD_HI22
:
2756 case elfcpp::R_SPARC_TLS_GD_LO10
:
2757 case elfcpp::R_SPARC_TLS_GD_ADD
:
2758 case elfcpp::R_SPARC_TLS_GD_CALL
:
2759 if (optimized_type
== tls::TLSOPT_TO_LE
)
2761 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2764 value
-= tls_segment
->memsz();
2768 case elfcpp::R_SPARC_TLS_GD_HI22
:
2769 // TLS_GD_HI22 --> TLS_LE_HIX22
2770 Reloc::hix22(view
, value
, addend
);
2773 case elfcpp::R_SPARC_TLS_GD_LO10
:
2774 // TLS_GD_LO10 --> TLS_LE_LOX10
2775 Reloc::lox10(view
, value
, addend
);
2778 case elfcpp::R_SPARC_TLS_GD_ADD
:
2779 // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
2780 val
= elfcpp::Swap
<32, true>::readval(wv
);
2781 val
= (val
& ~0x7c000) | 0x1c000;
2782 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2784 case elfcpp::R_SPARC_TLS_GD_CALL
:
2785 // call __tls_get_addr --> nop
2786 elfcpp::Swap
<32, true>::writeval(wv
, sparc_nop
);
2793 unsigned int got_type
= (optimized_type
== tls::TLSOPT_TO_IE
2794 ? GOT_TYPE_TLS_OFFSET
2795 : GOT_TYPE_TLS_PAIR
);
2798 gold_assert(gsym
->has_got_offset(got_type
));
2799 value
= gsym
->got_offset(got_type
);
2803 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
2804 gold_assert(object
->local_has_got_offset(r_sym
, got_type
));
2805 value
= object
->local_got_offset(r_sym
, got_type
);
2807 if (optimized_type
== tls::TLSOPT_TO_IE
)
2809 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2814 case elfcpp::R_SPARC_TLS_GD_HI22
:
2815 // TLS_GD_HI22 --> TLS_IE_HI22
2816 Reloc::hi22(view
, value
, addend
);
2819 case elfcpp::R_SPARC_TLS_GD_LO10
:
2820 // TLS_GD_LO10 --> TLS_IE_LO10
2821 Reloc::lo10(view
, value
, addend
);
2824 case elfcpp::R_SPARC_TLS_GD_ADD
:
2825 // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
2826 val
= elfcpp::Swap
<32, true>::readval(wv
);
2833 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2836 case elfcpp::R_SPARC_TLS_GD_CALL
:
2837 // The compiler can put the TLS_GD_ADD instruction
2838 // into the delay slot of the call. If so, we need
2839 // to transpose the two instructions so that the
2840 // the new sequence works properly.
2842 // The test we use is if the instruction in the
2843 // delay slot is an add with destination register
2845 val
= elfcpp::Swap
<32, true>::readval(wv
+ 1);
2846 if ((val
& 0x81f80000) == 0x80000000
2847 && ((val
>> 25) & 0x1f) == 0x8)
2854 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2857 this->ignore_gd_add_
= true;
2860 // call __tls_get_addr --> add %g7, %o0, %o0
2861 elfcpp::Swap
<32, true>::writeval(wv
, 0x9001c008);
2866 else if (optimized_type
== tls::TLSOPT_NONE
)
2870 case elfcpp::R_SPARC_TLS_GD_HI22
:
2871 Reloc::hi22(view
, value
, addend
);
2873 case elfcpp::R_SPARC_TLS_GD_LO10
:
2874 Reloc::lo10(view
, value
, addend
);
2876 case elfcpp::R_SPARC_TLS_GD_ADD
:
2878 case elfcpp::R_SPARC_TLS_GD_CALL
:
2880 Symbol_value
<size
> symval
;
2881 elfcpp::Elf_Xword value
;
2884 tsym
= target
->tls_get_addr_sym_
;
2886 value
= (target
->plt_section()->address() +
2887 tsym
->plt_offset());
2888 symval
.set_output_value(value
);
2889 Reloc::wdisp30(view
, object
, &symval
, addend
, address
);
2896 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2897 _("unsupported reloc %u"),
2901 case elfcpp::R_SPARC_TLS_LDM_HI22
:
2902 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2903 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2904 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2905 if (optimized_type
== tls::TLSOPT_TO_LE
)
2907 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2911 case elfcpp::R_SPARC_TLS_LDM_HI22
:
2912 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2913 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2914 elfcpp::Swap
<32, true>::writeval(wv
, sparc_nop
);
2917 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2918 elfcpp::Swap
<32, true>::writeval(wv
, sparc_mov_g0_o0
);
2923 else if (optimized_type
== tls::TLSOPT_NONE
)
2925 // Relocate the field with the offset of the GOT entry for
2926 // the module index.
2927 unsigned int got_offset
;
2929 got_offset
= target
->got_mod_index_entry(NULL
, NULL
, NULL
);
2932 case elfcpp::R_SPARC_TLS_LDM_HI22
:
2933 Reloc::hi22(view
, got_offset
, addend
);
2935 case elfcpp::R_SPARC_TLS_LDM_LO10
:
2936 Reloc::lo10(view
, got_offset
, addend
);
2938 case elfcpp::R_SPARC_TLS_LDM_ADD
:
2940 case elfcpp::R_SPARC_TLS_LDM_CALL
:
2942 Symbol_value
<size
> symval
;
2943 elfcpp::Elf_Xword value
;
2946 tsym
= target
->tls_get_addr_sym_
;
2948 value
= (target
->plt_section()->address() +
2949 tsym
->plt_offset());
2950 symval
.set_output_value(value
);
2951 Reloc::wdisp30(view
, object
, &symval
, addend
, address
);
2957 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
2958 _("unsupported reloc %u"),
2962 // These relocs can appear in debugging sections, in which case
2963 // we won't see the TLS_LDM relocs. The local_dynamic_type
2964 // field tells us this.
2965 case elfcpp::R_SPARC_TLS_LDO_HIX22
:
2966 if (optimized_type
== tls::TLSOPT_TO_LE
)
2968 value
-= tls_segment
->memsz();
2969 Reloc::hix22(view
, value
, addend
);
2972 Reloc::ldo_hix22(view
, value
, addend
);
2974 case elfcpp::R_SPARC_TLS_LDO_LOX10
:
2975 if (optimized_type
== tls::TLSOPT_TO_LE
)
2977 value
-= tls_segment
->memsz();
2978 Reloc::lox10(view
, value
, addend
);
2981 Reloc::ldo_lox10(view
, value
, addend
);
2983 case elfcpp::R_SPARC_TLS_LDO_ADD
:
2984 if (optimized_type
== tls::TLSOPT_TO_LE
)
2986 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
2989 // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
2990 val
= elfcpp::Swap
<32, true>::readval(wv
);
2991 val
= (val
& ~0x7c000) | 0x1c000;
2992 elfcpp::Swap
<32, true>::writeval(wv
, val
);
2996 // When optimizing IE --> LE, the only relocation that is handled
2997 // differently is R_SPARC_TLS_IE_LD, it is rewritten from
2998 // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
2999 // rs2 and rd are the same.
3000 case elfcpp::R_SPARC_TLS_IE_LD
:
3001 case elfcpp::R_SPARC_TLS_IE_LDX
:
3002 if (optimized_type
== tls::TLSOPT_TO_LE
)
3004 Insntype
* wv
= reinterpret_cast<Insntype
*>(view
);
3005 Insntype val
= elfcpp::Swap
<32, true>::readval(wv
);
3006 Insntype rs2
= val
& 0x1f;
3007 Insntype rd
= (val
>> 25) & 0x1f;
3012 val
= sparc_mov
| (val
& 0x3e00001f);
3014 elfcpp::Swap
<32, true>::writeval(wv
, val
);
3018 case elfcpp::R_SPARC_TLS_IE_HI22
:
3019 case elfcpp::R_SPARC_TLS_IE_LO10
:
3020 if (optimized_type
== tls::TLSOPT_TO_LE
)
3022 value
-= tls_segment
->memsz();
3025 case elfcpp::R_SPARC_TLS_IE_HI22
:
3026 // IE_HI22 --> LE_HIX22
3027 Reloc::hix22(view
, value
, addend
);
3029 case elfcpp::R_SPARC_TLS_IE_LO10
:
3030 // IE_LO10 --> LE_LOX10
3031 Reloc::lox10(view
, value
, addend
);
3036 else if (optimized_type
== tls::TLSOPT_NONE
)
3038 // Relocate the field with the offset of the GOT entry for
3039 // the tp-relative offset of the symbol.
3042 gold_assert(gsym
->has_got_offset(GOT_TYPE_TLS_OFFSET
));
3043 value
= gsym
->got_offset(GOT_TYPE_TLS_OFFSET
);
3047 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
3048 gold_assert(object
->local_has_got_offset(r_sym
,
3049 GOT_TYPE_TLS_OFFSET
));
3050 value
= object
->local_got_offset(r_sym
,
3051 GOT_TYPE_TLS_OFFSET
);
3055 case elfcpp::R_SPARC_TLS_IE_HI22
:
3056 Reloc::hi22(view
, value
, addend
);
3058 case elfcpp::R_SPARC_TLS_IE_LO10
:
3059 Reloc::lo10(view
, value
, addend
);
3064 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
3065 _("unsupported reloc %u"),
3069 case elfcpp::R_SPARC_TLS_IE_ADD
:
3070 // This seems to be mainly so that we can find the addition
3071 // instruction if there is one. There doesn't seem to be any
3072 // actual relocation to apply.
3075 case elfcpp::R_SPARC_TLS_LE_HIX22
:
3076 // If we're creating a shared library, a dynamic relocation will
3077 // have been created for this location, so do not apply it now.
3078 if (!parameters
->options().shared())
3080 value
-= tls_segment
->memsz();
3081 Reloc::hix22(view
, value
, addend
);
3085 case elfcpp::R_SPARC_TLS_LE_LOX10
:
3086 // If we're creating a shared library, a dynamic relocation will
3087 // have been created for this location, so do not apply it now.
3088 if (!parameters
->options().shared())
3090 value
-= tls_segment
->memsz();
3091 Reloc::lox10(view
, value
, addend
);
3097 // Relocate section data.
3099 template<int size
, bool big_endian
>
3101 Target_sparc
<size
, big_endian
>::relocate_section(
3102 const Relocate_info
<size
, big_endian
>* relinfo
,
3103 unsigned int sh_type
,
3104 const unsigned char* prelocs
,
3106 Output_section
* output_section
,
3107 bool needs_special_offset_handling
,
3108 unsigned char* view
,
3109 typename
elfcpp::Elf_types
<size
>::Elf_Addr address
,
3110 section_size_type view_size
,
3111 const Reloc_symbol_changes
* reloc_symbol_changes
)
3113 typedef Target_sparc
<size
, big_endian
> Sparc
;
3114 typedef typename Target_sparc
<size
, big_endian
>::Relocate Sparc_relocate
;
3116 gold_assert(sh_type
== elfcpp::SHT_RELA
);
3118 gold::relocate_section
<size
, big_endian
, Sparc
, elfcpp::SHT_RELA
,
3125 needs_special_offset_handling
,
3129 reloc_symbol_changes
);
3132 // Return the size of a relocation while scanning during a relocatable
3135 template<int size
, bool big_endian
>
3137 Target_sparc
<size
, big_endian
>::Relocatable_size_for_reloc::get_size_for_reloc(
3141 // We are always SHT_RELA, so we should never get here.
3146 // Scan the relocs during a relocatable link.
3148 template<int size
, bool big_endian
>
3150 Target_sparc
<size
, big_endian
>::scan_relocatable_relocs(
3151 const General_options
& options
,
3152 Symbol_table
* symtab
,
3154 Sized_relobj
<size
, big_endian
>* object
,
3155 unsigned int data_shndx
,
3156 unsigned int sh_type
,
3157 const unsigned char* prelocs
,
3159 Output_section
* output_section
,
3160 bool needs_special_offset_handling
,
3161 size_t local_symbol_count
,
3162 const unsigned char* plocal_symbols
,
3163 Relocatable_relocs
* rr
)
3165 gold_assert(sh_type
== elfcpp::SHT_RELA
);
3167 typedef gold::Default_scan_relocatable_relocs
<elfcpp::SHT_RELA
,
3168 Relocatable_size_for_reloc
> Scan_relocatable_relocs
;
3170 gold::scan_relocatable_relocs
<size
, big_endian
, elfcpp::SHT_RELA
,
3171 Scan_relocatable_relocs
>(
3180 needs_special_offset_handling
,
3186 // Relocate a section during a relocatable link.
3188 template<int size
, bool big_endian
>
3190 Target_sparc
<size
, big_endian
>::relocate_for_relocatable(
3191 const Relocate_info
<size
, big_endian
>* relinfo
,
3192 unsigned int sh_type
,
3193 const unsigned char* prelocs
,
3195 Output_section
* output_section
,
3196 off_t offset_in_output_section
,
3197 const Relocatable_relocs
* rr
,
3198 unsigned char* view
,
3199 typename
elfcpp::Elf_types
<size
>::Elf_Addr view_address
,
3200 section_size_type view_size
,
3201 unsigned char* reloc_view
,
3202 section_size_type reloc_view_size
)
3204 gold_assert(sh_type
== elfcpp::SHT_RELA
);
3206 gold::relocate_for_relocatable
<size
, big_endian
, elfcpp::SHT_RELA
>(
3211 offset_in_output_section
,
3220 // Return the value to use for a dynamic which requires special
3221 // treatment. This is how we support equality comparisons of function
3222 // pointers across shared library boundaries, as described in the
3223 // processor specific ABI supplement.
3225 template<int size
, bool big_endian
>
3227 Target_sparc
<size
, big_endian
>::do_dynsym_value(const Symbol
* gsym
) const
3229 gold_assert(gsym
->is_from_dynobj() && gsym
->has_plt_offset());
3230 return this->plt_section()->address() + gsym
->plt_offset();
3233 // The selector for sparc object files.
3235 template<int size
, bool big_endian
>
3236 class Target_selector_sparc
: public Target_selector
3239 Target_selector_sparc()
3240 : Target_selector(elfcpp::EM_NONE
, size
, big_endian
,
3241 (size
== 64 ? "elf64-sparc" : "elf32-sparc"))
3244 Target
* do_recognize(int machine
, int, int)
3249 if (machine
!= elfcpp::EM_SPARCV9
)
3254 if (machine
!= elfcpp::EM_SPARC
3255 && machine
!= elfcpp::EM_SPARC32PLUS
)
3263 return this->instantiate_target();
3266 Target
* do_instantiate_target()
3267 { return new Target_sparc
<size
, big_endian
>(); }
3270 Target_selector_sparc
<32, true> target_selector_sparc32
;
3271 Target_selector_sparc
<64, true> target_selector_sparc64
;
3273 } // End anonymous namespace.