1 /* Renesas / SuperH SH specific support for 32-bit ELF
2 Copyright (C) 1996-2020 Free Software Foundation, Inc.
3 Contributed by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
27 #include "elf-vxworks.h"
30 #include "libiberty.h"
31 #include "../opcodes/sh-opc.h"
33 /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */
34 #define OCTETS_PER_BYTE(ABFD, SEC) 1
36 static bfd_reloc_status_type sh_elf_reloc
37 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
38 static bfd_reloc_status_type sh_elf_ignore_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_boolean sh_elf_relax_delete_bytes
41 (bfd
*, asection
*, bfd_vma
, int);
42 static bfd_boolean sh_elf_align_loads
43 (bfd
*, asection
*, Elf_Internal_Rela
*, bfd_byte
*, bfd_boolean
*);
44 static bfd_boolean sh_elf_swap_insns
45 (bfd
*, asection
*, void *, bfd_byte
*, bfd_vma
);
46 static int sh_elf_optimized_tls_reloc
47 (struct bfd_link_info
*, int, int);
48 static bfd_vma dtpoff_base
49 (struct bfd_link_info
*);
51 (struct bfd_link_info
*, bfd_vma
);
53 /* The name of the dynamic interpreter. This is put in the .interp
56 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
58 /* FDPIC binaries have a default 128K stack. */
59 #define DEFAULT_STACK_SIZE 0x20000
61 #define MINUS_ONE ((bfd_vma) 0 - 1)
63 /* Decide whether a reference to a symbol can be resolved locally or
64 not. If the symbol is protected, we want the local address, but
65 its function descriptor must be assigned by the dynamic linker. */
66 #define SYMBOL_FUNCDESC_LOCAL(INFO, H) \
67 (SYMBOL_REFERENCES_LOCAL (INFO, H) \
68 || ! elf_hash_table (INFO)->dynamic_sections_created)
70 #define SH_PARTIAL32 TRUE
71 #define SH_SRC_MASK32 0xffffffff
72 #define SH_ELF_RELOC sh_elf_reloc
73 static reloc_howto_type sh_elf_howto_table
[] =
75 #include "elf32-sh-relocs.h"
78 #define SH_PARTIAL32 FALSE
79 #define SH_SRC_MASK32 0
80 #define SH_ELF_RELOC bfd_elf_generic_reloc
81 static reloc_howto_type sh_vxworks_howto_table
[] =
83 #include "elf32-sh-relocs.h"
86 /* Return true if OUTPUT_BFD is a VxWorks object. */
89 vxworks_object_p (bfd
*abfd ATTRIBUTE_UNUSED
)
91 #if !defined SH_TARGET_ALREADY_DEFINED
92 extern const bfd_target sh_elf32_vxworks_le_vec
;
93 extern const bfd_target sh_elf32_vxworks_vec
;
95 return (abfd
->xvec
== &sh_elf32_vxworks_le_vec
96 || abfd
->xvec
== &sh_elf32_vxworks_vec
);
102 /* Return true if OUTPUT_BFD is an FDPIC object. */
105 fdpic_object_p (bfd
*abfd ATTRIBUTE_UNUSED
)
107 #if !defined SH_TARGET_ALREADY_DEFINED
108 extern const bfd_target sh_elf32_fdpic_le_vec
;
109 extern const bfd_target sh_elf32_fdpic_be_vec
;
111 return (abfd
->xvec
== &sh_elf32_fdpic_le_vec
112 || abfd
->xvec
== &sh_elf32_fdpic_be_vec
);
118 /* Return the howto table for ABFD. */
120 static reloc_howto_type
*
121 get_howto_table (bfd
*abfd
)
123 if (vxworks_object_p (abfd
))
124 return sh_vxworks_howto_table
;
125 return sh_elf_howto_table
;
128 static bfd_reloc_status_type
129 sh_elf_reloc_loop (int r_type ATTRIBUTE_UNUSED
, bfd
*input_bfd
,
130 asection
*input_section
, bfd_byte
*contents
,
131 bfd_vma addr
, asection
*symbol_section
,
132 bfd_vma start
, bfd_vma end
)
134 static bfd_vma last_addr
;
135 static asection
*last_symbol_section
;
136 bfd_byte
*start_ptr
, *ptr
, *last_ptr
;
141 /* Sanity check the address. */
142 if (addr
> bfd_get_section_limit (input_bfd
, input_section
))
143 return bfd_reloc_outofrange
;
145 /* We require the start and end relocations to be processed consecutively -
146 although we allow then to be processed forwards or backwards. */
150 last_symbol_section
= symbol_section
;
153 if (last_addr
!= addr
)
157 if (! symbol_section
|| last_symbol_section
!= symbol_section
|| end
< start
)
158 return bfd_reloc_outofrange
;
160 /* Get the symbol_section contents. */
161 if (symbol_section
!= input_section
)
163 if (elf_section_data (symbol_section
)->this_hdr
.contents
!= NULL
)
164 contents
= elf_section_data (symbol_section
)->this_hdr
.contents
;
167 if (!bfd_malloc_and_get_section (input_bfd
, symbol_section
,
171 return bfd_reloc_outofrange
;
175 #define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800)
176 start_ptr
= contents
+ start
;
177 for (cum_diff
= -6, ptr
= contents
+ end
; cum_diff
< 0 && ptr
> start_ptr
;)
179 for (last_ptr
= ptr
, ptr
-= 4; ptr
>= start_ptr
&& IS_PPI (ptr
);)
182 diff
= (last_ptr
- ptr
) >> 1;
183 cum_diff
+= diff
& 1;
186 /* Calculate the start / end values to load into rs / re minus four -
187 so that will cancel out the four we would otherwise have to add to
188 addr to get the value to subtract in order to get relative addressing. */
192 end
= (ptr
+ cum_diff
* 2) - contents
;
196 bfd_vma start0
= start
- 4;
198 while (start0
&& IS_PPI (contents
+ start0
))
200 start0
= start
- 2 - ((start
- start0
) & 2);
201 start
= start0
- cum_diff
- 2;
205 if (elf_section_data (symbol_section
)->this_hdr
.contents
!= contents
)
208 insn
= bfd_get_16 (input_bfd
, contents
+ addr
);
210 x
= (insn
& 0x200 ? end
: start
) - addr
;
211 if (input_section
!= symbol_section
)
212 x
+= ((symbol_section
->output_section
->vma
+ symbol_section
->output_offset
)
213 - (input_section
->output_section
->vma
214 + input_section
->output_offset
));
216 if (x
< -128 || x
> 127)
217 return bfd_reloc_overflow
;
219 x
= (insn
& ~0xff) | (x
& 0xff);
220 bfd_put_16 (input_bfd
, (bfd_vma
) x
, contents
+ addr
);
225 /* This function is used for normal relocs. This used to be like the COFF
226 function, and is almost certainly incorrect for other ELF targets. */
228 static bfd_reloc_status_type
229 sh_elf_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol_in
,
230 void *data
, asection
*input_section
, bfd
*output_bfd
,
231 char **error_message ATTRIBUTE_UNUSED
)
235 enum elf_sh_reloc_type r_type
;
236 bfd_vma addr
= reloc_entry
->address
;
237 bfd_size_type octets
= addr
* OCTETS_PER_BYTE (abfd
, input_section
);
238 bfd_byte
*hit_data
= (bfd_byte
*) data
+ octets
;
240 r_type
= (enum elf_sh_reloc_type
) reloc_entry
->howto
->type
;
242 if (output_bfd
!= NULL
)
244 /* Partial linking--do nothing. */
245 reloc_entry
->address
+= input_section
->output_offset
;
249 /* Almost all relocs have to do with relaxing. If any work must be
250 done for them, it has been done in sh_relax_section. */
251 if (r_type
== R_SH_IND12W
&& (symbol_in
->flags
& BSF_LOCAL
) != 0)
254 if (symbol_in
!= NULL
255 && bfd_is_und_section (symbol_in
->section
))
256 return bfd_reloc_undefined
;
258 /* PR 17512: file: 9891ca98. */
259 if (octets
+ bfd_get_reloc_size (reloc_entry
->howto
)
260 > bfd_get_section_limit_octets (abfd
, input_section
))
261 return bfd_reloc_outofrange
;
263 if (bfd_is_com_section (symbol_in
->section
))
266 sym_value
= (symbol_in
->value
+
267 symbol_in
->section
->output_section
->vma
+
268 symbol_in
->section
->output_offset
);
273 insn
= bfd_get_32 (abfd
, hit_data
);
274 insn
+= sym_value
+ reloc_entry
->addend
;
275 bfd_put_32 (abfd
, insn
, hit_data
);
278 insn
= bfd_get_16 (abfd
, hit_data
);
279 sym_value
+= reloc_entry
->addend
;
280 sym_value
-= (input_section
->output_section
->vma
281 + input_section
->output_offset
284 sym_value
+= (((insn
& 0xfff) ^ 0x800) - 0x800) << 1;
285 insn
= (insn
& 0xf000) | ((sym_value
>> 1) & 0xfff);
286 bfd_put_16 (abfd
, insn
, hit_data
);
287 if (sym_value
+ 0x1000 >= 0x2000 || (sym_value
& 1) != 0)
288 return bfd_reloc_overflow
;
298 /* This function is used for relocs which are only used for relaxing,
299 which the linker should otherwise ignore. */
301 static bfd_reloc_status_type
302 sh_elf_ignore_reloc (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*reloc_entry
,
303 asymbol
*symbol ATTRIBUTE_UNUSED
,
304 void *data ATTRIBUTE_UNUSED
, asection
*input_section
,
306 char **error_message ATTRIBUTE_UNUSED
)
308 if (output_bfd
!= NULL
)
309 reloc_entry
->address
+= input_section
->output_offset
;
313 /* This structure is used to map BFD reloc codes to SH ELF relocs. */
317 bfd_reloc_code_real_type bfd_reloc_val
;
318 unsigned char elf_reloc_val
;
321 /* An array mapping BFD reloc codes to SH ELF relocs. */
323 static const struct elf_reloc_map sh_reloc_map
[] =
325 { BFD_RELOC_NONE
, R_SH_NONE
},
326 { BFD_RELOC_32
, R_SH_DIR32
},
327 { BFD_RELOC_16
, R_SH_DIR16
},
328 { BFD_RELOC_8
, R_SH_DIR8
},
329 { BFD_RELOC_CTOR
, R_SH_DIR32
},
330 { BFD_RELOC_32_PCREL
, R_SH_REL32
},
331 { BFD_RELOC_SH_PCDISP8BY2
, R_SH_DIR8WPN
},
332 { BFD_RELOC_SH_PCDISP12BY2
, R_SH_IND12W
},
333 { BFD_RELOC_SH_PCRELIMM8BY2
, R_SH_DIR8WPZ
},
334 { BFD_RELOC_SH_PCRELIMM8BY4
, R_SH_DIR8WPL
},
335 { BFD_RELOC_8_PCREL
, R_SH_SWITCH8
},
336 { BFD_RELOC_SH_SWITCH16
, R_SH_SWITCH16
},
337 { BFD_RELOC_SH_SWITCH32
, R_SH_SWITCH32
},
338 { BFD_RELOC_SH_USES
, R_SH_USES
},
339 { BFD_RELOC_SH_COUNT
, R_SH_COUNT
},
340 { BFD_RELOC_SH_ALIGN
, R_SH_ALIGN
},
341 { BFD_RELOC_SH_CODE
, R_SH_CODE
},
342 { BFD_RELOC_SH_DATA
, R_SH_DATA
},
343 { BFD_RELOC_SH_LABEL
, R_SH_LABEL
},
344 { BFD_RELOC_VTABLE_INHERIT
, R_SH_GNU_VTINHERIT
},
345 { BFD_RELOC_VTABLE_ENTRY
, R_SH_GNU_VTENTRY
},
346 { BFD_RELOC_SH_LOOP_START
, R_SH_LOOP_START
},
347 { BFD_RELOC_SH_LOOP_END
, R_SH_LOOP_END
},
348 { BFD_RELOC_SH_TLS_GD_32
, R_SH_TLS_GD_32
},
349 { BFD_RELOC_SH_TLS_LD_32
, R_SH_TLS_LD_32
},
350 { BFD_RELOC_SH_TLS_LDO_32
, R_SH_TLS_LDO_32
},
351 { BFD_RELOC_SH_TLS_IE_32
, R_SH_TLS_IE_32
},
352 { BFD_RELOC_SH_TLS_LE_32
, R_SH_TLS_LE_32
},
353 { BFD_RELOC_SH_TLS_DTPMOD32
, R_SH_TLS_DTPMOD32
},
354 { BFD_RELOC_SH_TLS_DTPOFF32
, R_SH_TLS_DTPOFF32
},
355 { BFD_RELOC_SH_TLS_TPOFF32
, R_SH_TLS_TPOFF32
},
356 { BFD_RELOC_32_GOT_PCREL
, R_SH_GOT32
},
357 { BFD_RELOC_32_PLT_PCREL
, R_SH_PLT32
},
358 { BFD_RELOC_SH_COPY
, R_SH_COPY
},
359 { BFD_RELOC_SH_GLOB_DAT
, R_SH_GLOB_DAT
},
360 { BFD_RELOC_SH_JMP_SLOT
, R_SH_JMP_SLOT
},
361 { BFD_RELOC_SH_RELATIVE
, R_SH_RELATIVE
},
362 { BFD_RELOC_32_GOTOFF
, R_SH_GOTOFF
},
363 { BFD_RELOC_SH_GOTPC
, R_SH_GOTPC
},
364 { BFD_RELOC_SH_GOTPLT32
, R_SH_GOTPLT32
},
365 { BFD_RELOC_SH_GOT20
, R_SH_GOT20
},
366 { BFD_RELOC_SH_GOTOFF20
, R_SH_GOTOFF20
},
367 { BFD_RELOC_SH_GOTFUNCDESC
, R_SH_GOTFUNCDESC
},
368 { BFD_RELOC_SH_GOTFUNCDESC20
, R_SH_GOTFUNCDESC20
},
369 { BFD_RELOC_SH_GOTOFFFUNCDESC
, R_SH_GOTOFFFUNCDESC
},
370 { BFD_RELOC_SH_GOTOFFFUNCDESC20
, R_SH_GOTOFFFUNCDESC20
},
371 { BFD_RELOC_SH_FUNCDESC
, R_SH_FUNCDESC
},
374 /* Given a BFD reloc code, return the howto structure for the
375 corresponding SH ELF reloc. */
377 static reloc_howto_type
*
378 sh_elf_reloc_type_lookup (bfd
*abfd
, bfd_reloc_code_real_type code
)
382 for (i
= 0; i
< sizeof (sh_reloc_map
) / sizeof (struct elf_reloc_map
); i
++)
384 if (sh_reloc_map
[i
].bfd_reloc_val
== code
)
385 return get_howto_table (abfd
) + (int) sh_reloc_map
[i
].elf_reloc_val
;
391 static reloc_howto_type
*
392 sh_elf_reloc_name_lookup (bfd
*abfd
, const char *r_name
)
396 if (vxworks_object_p (abfd
))
399 i
< (sizeof (sh_vxworks_howto_table
)
400 / sizeof (sh_vxworks_howto_table
[0]));
402 if (sh_vxworks_howto_table
[i
].name
!= NULL
403 && strcasecmp (sh_vxworks_howto_table
[i
].name
, r_name
) == 0)
404 return &sh_vxworks_howto_table
[i
];
409 i
< (sizeof (sh_elf_howto_table
)
410 / sizeof (sh_elf_howto_table
[0]));
412 if (sh_elf_howto_table
[i
].name
!= NULL
413 && strcasecmp (sh_elf_howto_table
[i
].name
, r_name
) == 0)
414 return &sh_elf_howto_table
[i
];
420 /* Given an ELF reloc, fill in the howto field of a relent. */
423 sh_elf_info_to_howto (bfd
*abfd
, arelent
*cache_ptr
, Elf_Internal_Rela
*dst
)
427 r
= ELF32_R_TYPE (dst
->r_info
);
430 || (r
>= R_SH_FIRST_INVALID_RELOC
&& r
<= R_SH_LAST_INVALID_RELOC
)
431 || (r
>= R_SH_FIRST_INVALID_RELOC_2
&& r
<= R_SH_LAST_INVALID_RELOC_2
)
432 || (r
>= R_SH_FIRST_INVALID_RELOC_3
&& r
<= R_SH_LAST_INVALID_RELOC_3
)
433 || (r
>= R_SH_FIRST_INVALID_RELOC_4
&& r
<= R_SH_LAST_INVALID_RELOC_4
)
434 || (r
>= R_SH_FIRST_INVALID_RELOC_5
&& r
<= R_SH_LAST_INVALID_RELOC_5
)
435 || (r
>= R_SH_FIRST_INVALID_RELOC_6
&& r
<= R_SH_LAST_INVALID_RELOC_6
))
437 /* xgettext:c-format */
438 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
440 bfd_set_error (bfd_error_bad_value
);
444 cache_ptr
->howto
= get_howto_table (abfd
) + r
;
448 /* This function handles relaxing for SH ELF. See the corresponding
449 function in coff-sh.c for a description of what this does. FIXME:
450 There is a lot of duplication here between this code and the COFF
451 specific code. The format of relocs and symbols is wound deeply
452 into this code, but it would still be better if the duplication
453 could be eliminated somehow. Note in particular that although both
454 functions use symbols like R_SH_CODE, those symbols have different
455 values; in coff-sh.c they come from include/coff/sh.h, whereas here
456 they come from enum elf_sh_reloc_type in include/elf/sh.h. */
459 sh_elf_relax_section (bfd
*abfd
, asection
*sec
,
460 struct bfd_link_info
*link_info
, bfd_boolean
*again
)
462 Elf_Internal_Shdr
*symtab_hdr
;
463 Elf_Internal_Rela
*internal_relocs
;
464 bfd_boolean have_code
;
465 Elf_Internal_Rela
*irel
, *irelend
;
466 bfd_byte
*contents
= NULL
;
467 Elf_Internal_Sym
*isymbuf
= NULL
;
471 if (bfd_link_relocatable (link_info
)
472 || (sec
->flags
& SEC_RELOC
) == 0
473 || sec
->reloc_count
== 0)
476 symtab_hdr
= &elf_symtab_hdr (abfd
);
478 internal_relocs
= (_bfd_elf_link_read_relocs
479 (abfd
, sec
, NULL
, (Elf_Internal_Rela
*) NULL
,
480 link_info
->keep_memory
));
481 if (internal_relocs
== NULL
)
486 irelend
= internal_relocs
+ sec
->reloc_count
;
487 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
489 bfd_vma laddr
, paddr
, symval
;
491 Elf_Internal_Rela
*irelfn
, *irelscan
, *irelcount
;
494 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_CODE
)
497 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_SH_USES
)
500 /* Get the section contents. */
501 if (contents
== NULL
)
503 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
504 contents
= elf_section_data (sec
)->this_hdr
.contents
;
507 if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
512 /* The r_addend field of the R_SH_USES reloc will point us to
513 the register load. The 4 is because the r_addend field is
514 computed as though it were a jump offset, which are based
515 from 4 bytes after the jump instruction. */
516 laddr
= irel
->r_offset
+ 4 + irel
->r_addend
;
517 if (laddr
>= sec
->size
)
519 /* xgettext:c-format */
521 (_("%pB: %#" PRIx64
": warning: bad R_SH_USES offset"),
522 abfd
, (uint64_t) irel
->r_offset
);
525 insn
= bfd_get_16 (abfd
, contents
+ laddr
);
527 /* If the instruction is not mov.l NN,rN, we don't know what to
529 if ((insn
& 0xf000) != 0xd000)
532 /* xgettext:c-format */
533 (_("%pB: %#" PRIx64
": warning: "
534 "R_SH_USES points to unrecognized insn 0x%x"),
535 abfd
, (uint64_t) irel
->r_offset
, insn
);
539 /* Get the address from which the register is being loaded. The
540 displacement in the mov.l instruction is quadrupled. It is a
541 displacement from four bytes after the movl instruction, but,
542 before adding in the PC address, two least significant bits
543 of the PC are cleared. We assume that the section is aligned
544 on a four byte boundary. */
547 paddr
+= (laddr
+ 4) &~ (bfd_vma
) 3;
548 if (paddr
>= sec
->size
)
551 /* xgettext:c-format */
552 (_("%pB: %#" PRIx64
": warning: bad R_SH_USES load offset"),
553 abfd
, (uint64_t) irel
->r_offset
);
557 /* Get the reloc for the address from which the register is
558 being loaded. This reloc will tell us which function is
559 actually being called. */
560 for (irelfn
= internal_relocs
; irelfn
< irelend
; irelfn
++)
561 if (irelfn
->r_offset
== paddr
562 && ELF32_R_TYPE (irelfn
->r_info
) == (int) R_SH_DIR32
)
564 if (irelfn
>= irelend
)
567 /* xgettext:c-format */
568 (_("%pB: %#" PRIx64
": warning: could not find expected reloc"),
569 abfd
, (uint64_t) paddr
);
573 /* Read this BFD's symbols if we haven't done so already. */
574 if (isymbuf
== NULL
&& symtab_hdr
->sh_info
!= 0)
576 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
578 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
579 symtab_hdr
->sh_info
, 0,
585 /* Get the value of the symbol referred to by the reloc. */
586 if (ELF32_R_SYM (irelfn
->r_info
) < symtab_hdr
->sh_info
)
588 /* A local symbol. */
589 Elf_Internal_Sym
*isym
;
591 isym
= isymbuf
+ ELF32_R_SYM (irelfn
->r_info
);
593 != (unsigned int) _bfd_elf_section_from_bfd_section (abfd
, sec
))
596 /* xgettext:c-format */
597 (_("%pB: %#" PRIx64
": warning: symbol in unexpected section"),
598 abfd
, (uint64_t) paddr
);
602 symval
= (isym
->st_value
603 + sec
->output_section
->vma
604 + sec
->output_offset
);
609 struct elf_link_hash_entry
*h
;
611 indx
= ELF32_R_SYM (irelfn
->r_info
) - symtab_hdr
->sh_info
;
612 h
= elf_sym_hashes (abfd
)[indx
];
613 BFD_ASSERT (h
!= NULL
);
614 if (h
->root
.type
!= bfd_link_hash_defined
615 && h
->root
.type
!= bfd_link_hash_defweak
)
617 /* This appears to be a reference to an undefined
618 symbol. Just ignore it--it will be caught by the
619 regular reloc processing. */
623 symval
= (h
->root
.u
.def
.value
624 + h
->root
.u
.def
.section
->output_section
->vma
625 + h
->root
.u
.def
.section
->output_offset
);
628 if (get_howto_table (abfd
)[R_SH_DIR32
].partial_inplace
)
629 symval
+= bfd_get_32 (abfd
, contents
+ paddr
);
631 symval
+= irelfn
->r_addend
;
633 /* See if this function call can be shortened. */
636 + sec
->output_section
->vma
639 /* A branch to an address beyond ours might be increased by an
640 .align that doesn't move when bytes behind us are deleted.
641 So, we add some slop in this calculation to allow for
643 if (foff
< -0x1000 || foff
>= 0x1000 - 8)
645 /* After all that work, we can't shorten this function call. */
649 /* Shorten the function call. */
651 /* For simplicity of coding, we are going to modify the section
652 contents, the section relocs, and the BFD symbol table. We
653 must tell the rest of the code not to free up this
654 information. It would be possible to instead create a table
655 of changes which have to be made, as is done in coff-mips.c;
656 that would be more work, but would require less memory when
657 the linker is run. */
659 elf_section_data (sec
)->relocs
= internal_relocs
;
660 elf_section_data (sec
)->this_hdr
.contents
= contents
;
661 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
663 /* Replace the jmp/jsr with a bra/bsr. */
665 /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and
666 replace the jmp/jsr with a bra/bsr. */
667 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irelfn
->r_info
), R_SH_IND12W
);
668 /* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
669 here, but that only checks if the symbol is an external symbol,
670 not if the symbol is in a different section. Besides, we need
671 a consistent meaning for the relocation, so we just assume here that
672 the value of the symbol is not available. */
674 /* We can't fully resolve this yet, because the external
675 symbol value may be changed by future relaxing. We let
676 the final link phase handle it. */
677 if (bfd_get_16 (abfd
, contents
+ irel
->r_offset
) & 0x0020)
678 bfd_put_16 (abfd
, (bfd_vma
) 0xa000, contents
+ irel
->r_offset
);
680 bfd_put_16 (abfd
, (bfd_vma
) 0xb000, contents
+ irel
->r_offset
);
684 /* When we calculated the symbol "value" we had an offset in the
685 DIR32's word in memory (we read and add it above). However,
686 the jsr we create does NOT have this offset encoded, so we
687 have to add it to the addend to preserve it. */
688 irel
->r_addend
+= bfd_get_32 (abfd
, contents
+ paddr
);
690 /* See if there is another R_SH_USES reloc referring to the same
692 for (irelscan
= internal_relocs
; irelscan
< irelend
; irelscan
++)
693 if (ELF32_R_TYPE (irelscan
->r_info
) == (int) R_SH_USES
694 && laddr
== irelscan
->r_offset
+ 4 + irelscan
->r_addend
)
696 if (irelscan
< irelend
)
698 /* Some other function call depends upon this register load,
699 and we have not yet converted that function call.
700 Indeed, we may never be able to convert it. There is
701 nothing else we can do at this point. */
705 /* Look for a R_SH_COUNT reloc on the location where the
706 function address is stored. Do this before deleting any
707 bytes, to avoid confusion about the address. */
708 for (irelcount
= internal_relocs
; irelcount
< irelend
; irelcount
++)
709 if (irelcount
->r_offset
== paddr
710 && ELF32_R_TYPE (irelcount
->r_info
) == (int) R_SH_COUNT
)
713 /* Delete the register load. */
714 if (! sh_elf_relax_delete_bytes (abfd
, sec
, laddr
, 2))
717 /* That will change things, so, just in case it permits some
718 other function call to come within range, we should relax
719 again. Note that this is not required, and it may be slow. */
722 /* Now check whether we got a COUNT reloc. */
723 if (irelcount
>= irelend
)
726 /* xgettext:c-format */
727 (_("%pB: %#" PRIx64
": warning: "
728 "could not find expected COUNT reloc"),
729 abfd
, (uint64_t) paddr
);
733 /* The number of uses is stored in the r_addend field. We've
735 if (irelcount
->r_addend
== 0)
737 /* xgettext:c-format */
738 _bfd_error_handler (_("%pB: %#" PRIx64
": warning: bad count"),
739 abfd
, (uint64_t) paddr
);
743 --irelcount
->r_addend
;
745 /* If there are no more uses, we can delete the address. Reload
746 the address from irelfn, in case it was changed by the
747 previous call to sh_elf_relax_delete_bytes. */
748 if (irelcount
->r_addend
== 0)
750 if (! sh_elf_relax_delete_bytes (abfd
, sec
, irelfn
->r_offset
, 4))
754 /* We've done all we can with that function call. */
757 /* Look for load and store instructions that we can align on four
759 if ((elf_elfheader (abfd
)->e_flags
& EF_SH_MACH_MASK
) != EF_SH4
764 /* Get the section contents. */
765 if (contents
== NULL
)
767 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
768 contents
= elf_section_data (sec
)->this_hdr
.contents
;
771 if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
776 if (! sh_elf_align_loads (abfd
, sec
, internal_relocs
, contents
,
782 elf_section_data (sec
)->relocs
= internal_relocs
;
783 elf_section_data (sec
)->this_hdr
.contents
= contents
;
784 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
789 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
791 if (! link_info
->keep_memory
)
795 /* Cache the symbols for elf_link_input_bfd. */
796 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
801 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
803 if (! link_info
->keep_memory
)
807 /* Cache the section contents for elf_link_input_bfd. */
808 elf_section_data (sec
)->this_hdr
.contents
= contents
;
812 if (elf_section_data (sec
)->relocs
!= internal_relocs
)
813 free (internal_relocs
);
818 if (symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
820 if (elf_section_data (sec
)->this_hdr
.contents
!= contents
)
822 if (elf_section_data (sec
)->relocs
!= internal_relocs
)
823 free (internal_relocs
);
828 /* Delete some bytes from a section while relaxing. FIXME: There is a
829 lot of duplication between this function and sh_relax_delete_bytes
833 sh_elf_relax_delete_bytes (bfd
*abfd
, asection
*sec
, bfd_vma addr
,
836 Elf_Internal_Shdr
*symtab_hdr
;
837 unsigned int sec_shndx
;
839 Elf_Internal_Rela
*irel
, *irelend
;
840 Elf_Internal_Rela
*irelalign
;
842 Elf_Internal_Sym
*isymbuf
, *isym
, *isymend
;
843 struct elf_link_hash_entry
**sym_hashes
;
844 struct elf_link_hash_entry
**end_hashes
;
845 unsigned int symcount
;
848 symtab_hdr
= &elf_symtab_hdr (abfd
);
849 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
851 sec_shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
853 contents
= elf_section_data (sec
)->this_hdr
.contents
;
855 /* The deletion must stop at the next ALIGN reloc for an alignment
856 power larger than the number of bytes we are deleting. */
861 irel
= elf_section_data (sec
)->relocs
;
862 irelend
= irel
+ sec
->reloc_count
;
863 for (; irel
< irelend
; irel
++)
865 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_ALIGN
866 && irel
->r_offset
> addr
867 && count
< (1 << irel
->r_addend
))
870 toaddr
= irel
->r_offset
;
875 /* Actually delete the bytes. */
876 memmove (contents
+ addr
, contents
+ addr
+ count
,
877 (size_t) (toaddr
- addr
- count
));
878 if (irelalign
== NULL
)
884 #define NOP_OPCODE (0x0009)
886 BFD_ASSERT ((count
& 1) == 0);
887 for (i
= 0; i
< count
; i
+= 2)
888 bfd_put_16 (abfd
, (bfd_vma
) NOP_OPCODE
, contents
+ toaddr
- count
+ i
);
891 /* Adjust all the relocs. */
892 for (irel
= elf_section_data (sec
)->relocs
; irel
< irelend
; irel
++)
894 bfd_vma nraddr
, stop
;
897 int off
, adjust
, oinsn
;
898 bfd_signed_vma voff
= 0;
899 bfd_boolean overflow
;
901 /* Get the new reloc address. */
902 nraddr
= irel
->r_offset
;
903 if ((irel
->r_offset
> addr
904 && irel
->r_offset
< toaddr
)
905 || (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_ALIGN
906 && irel
->r_offset
== toaddr
))
909 /* See if this reloc was for the bytes we have deleted, in which
910 case we no longer care about it. Don't delete relocs which
911 represent addresses, though. */
912 if (irel
->r_offset
>= addr
913 && irel
->r_offset
< addr
+ count
914 && ELF32_R_TYPE (irel
->r_info
) != (int) R_SH_ALIGN
915 && ELF32_R_TYPE (irel
->r_info
) != (int) R_SH_CODE
916 && ELF32_R_TYPE (irel
->r_info
) != (int) R_SH_DATA
917 && ELF32_R_TYPE (irel
->r_info
) != (int) R_SH_LABEL
)
918 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
921 /* If this is a PC relative reloc, see if the range it covers
922 includes the bytes we have deleted. */
923 switch ((enum elf_sh_reloc_type
) ELF32_R_TYPE (irel
->r_info
))
932 start
= irel
->r_offset
;
933 insn
= bfd_get_16 (abfd
, contents
+ nraddr
);
937 switch ((enum elf_sh_reloc_type
) ELF32_R_TYPE (irel
->r_info
))
944 /* If this reloc is against a symbol defined in this
945 section, and the symbol will not be adjusted below, we
946 must check the addend to see it will put the value in
947 range to be adjusted, and hence must be changed. */
948 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
950 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
951 if (isym
->st_shndx
== sec_shndx
952 && (isym
->st_value
<= addr
953 || isym
->st_value
>= toaddr
))
957 if (get_howto_table (abfd
)[R_SH_DIR32
].partial_inplace
)
959 val
= bfd_get_32 (abfd
, contents
+ nraddr
);
960 val
+= isym
->st_value
;
961 if (val
> addr
&& val
< toaddr
)
962 bfd_put_32 (abfd
, val
- count
, contents
+ nraddr
);
966 val
= isym
->st_value
+ irel
->r_addend
;
967 if (val
> addr
&& val
< toaddr
)
968 irel
->r_addend
-= count
;
979 stop
= (bfd_vma
) ((bfd_signed_vma
) start
+ 4 + off
* 2);
986 /* This has been made by previous relaxation. Since the
987 relocation will be against an external symbol, the
988 final relocation will just do the right thing. */
995 stop
= (bfd_vma
) ((bfd_signed_vma
) start
+ 4 + off
* 2);
997 /* The addend will be against the section symbol, thus
998 for adjusting the addend, the relevant start is the
999 start of the section.
1000 N.B. If we want to abandon in-place changes here and
1001 test directly using symbol + addend, we have to take into
1002 account that the addend has already been adjusted by -4. */
1003 if (stop
> addr
&& stop
< toaddr
)
1004 irel
->r_addend
-= count
;
1010 stop
= start
+ 4 + off
* 2;
1015 stop
= (start
& ~(bfd_vma
) 3) + 4 + off
* 4;
1021 /* These relocs types represent
1023 The r_addend field holds the difference between the reloc
1024 address and L1. That is the start of the reloc, and
1025 adding in the contents gives us the top. We must adjust
1026 both the r_offset field and the section contents.
1027 N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset,
1028 and the elf bfd r_offset is called r_vaddr. */
1030 stop
= irel
->r_offset
;
1031 start
= (bfd_vma
) ((bfd_signed_vma
) stop
- (long) irel
->r_addend
);
1035 && (stop
<= addr
|| stop
>= toaddr
))
1036 irel
->r_addend
+= count
;
1037 else if (stop
> addr
1039 && (start
<= addr
|| start
>= toaddr
))
1040 irel
->r_addend
-= count
;
1042 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_SWITCH16
)
1043 voff
= bfd_get_signed_16 (abfd
, contents
+ nraddr
);
1044 else if (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_SWITCH8
)
1045 voff
= bfd_get_8 (abfd
, contents
+ nraddr
);
1047 voff
= bfd_get_signed_32 (abfd
, contents
+ nraddr
);
1048 stop
= (bfd_vma
) ((bfd_signed_vma
) start
+ voff
);
1053 start
= irel
->r_offset
;
1054 stop
= (bfd_vma
) ((bfd_signed_vma
) start
1055 + (long) irel
->r_addend
1062 && (stop
<= addr
|| stop
>= toaddr
))
1064 else if (stop
> addr
1066 && (start
<= addr
|| start
>= toaddr
))
1075 switch ((enum elf_sh_reloc_type
) ELF32_R_TYPE (irel
->r_info
))
1084 if ((oinsn
& 0xff00) != (insn
& 0xff00))
1086 bfd_put_16 (abfd
, (bfd_vma
) insn
, contents
+ nraddr
);
1091 if ((oinsn
& 0xf000) != (insn
& 0xf000))
1093 bfd_put_16 (abfd
, (bfd_vma
) insn
, contents
+ nraddr
);
1097 BFD_ASSERT (adjust
== count
|| count
>= 4);
1102 if ((irel
->r_offset
& 3) == 0)
1105 if ((oinsn
& 0xff00) != (insn
& 0xff00))
1107 bfd_put_16 (abfd
, (bfd_vma
) insn
, contents
+ nraddr
);
1112 if (voff
< 0 || voff
>= 0xff)
1114 bfd_put_8 (abfd
, voff
, contents
+ nraddr
);
1119 if (voff
< - 0x8000 || voff
>= 0x8000)
1121 bfd_put_signed_16 (abfd
, (bfd_vma
) voff
, contents
+ nraddr
);
1126 bfd_put_signed_32 (abfd
, (bfd_vma
) voff
, contents
+ nraddr
);
1130 irel
->r_addend
+= adjust
;
1137 /* xgettext:c-format */
1138 (_("%pB: %#" PRIx64
": fatal: reloc overflow while relaxing"),
1139 abfd
, (uint64_t) irel
->r_offset
);
1140 bfd_set_error (bfd_error_bad_value
);
1145 irel
->r_offset
= nraddr
;
1148 /* Look through all the other sections. If there contain any IMM32
1149 relocs against internal symbols which we are not going to adjust
1150 below, we may need to adjust the addends. */
1151 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
1153 Elf_Internal_Rela
*internal_relocs
;
1154 Elf_Internal_Rela
*irelscan
, *irelscanend
;
1155 bfd_byte
*ocontents
;
1158 || (o
->flags
& SEC_RELOC
) == 0
1159 || o
->reloc_count
== 0)
1162 /* We always cache the relocs. Perhaps, if info->keep_memory is
1163 FALSE, we should free them, if we are permitted to, when we
1164 leave sh_coff_relax_section. */
1165 internal_relocs
= (_bfd_elf_link_read_relocs
1166 (abfd
, o
, NULL
, (Elf_Internal_Rela
*) NULL
, TRUE
));
1167 if (internal_relocs
== NULL
)
1171 irelscanend
= internal_relocs
+ o
->reloc_count
;
1172 for (irelscan
= internal_relocs
; irelscan
< irelscanend
; irelscan
++)
1174 /* Dwarf line numbers use R_SH_SWITCH32 relocs. */
1175 if (ELF32_R_TYPE (irelscan
->r_info
) == (int) R_SH_SWITCH32
)
1177 bfd_vma start
, stop
;
1178 bfd_signed_vma voff
;
1180 if (ocontents
== NULL
)
1182 if (elf_section_data (o
)->this_hdr
.contents
!= NULL
)
1183 ocontents
= elf_section_data (o
)->this_hdr
.contents
;
1186 /* We always cache the section contents.
1187 Perhaps, if info->keep_memory is FALSE, we
1188 should free them, if we are permitted to,
1189 when we leave sh_coff_relax_section. */
1190 if (!bfd_malloc_and_get_section (abfd
, o
, &ocontents
))
1196 elf_section_data (o
)->this_hdr
.contents
= ocontents
;
1200 stop
= irelscan
->r_offset
;
1202 = (bfd_vma
) ((bfd_signed_vma
) stop
- (long) irelscan
->r_addend
);
1204 /* STOP is in a different section, so it won't change. */
1205 if (start
> addr
&& start
< toaddr
)
1206 irelscan
->r_addend
+= count
;
1208 voff
= bfd_get_signed_32 (abfd
, ocontents
+ irelscan
->r_offset
);
1209 stop
= (bfd_vma
) ((bfd_signed_vma
) start
+ voff
);
1213 && (stop
<= addr
|| stop
>= toaddr
))
1214 bfd_put_signed_32 (abfd
, (bfd_vma
) voff
+ count
,
1215 ocontents
+ irelscan
->r_offset
);
1216 else if (stop
> addr
1218 && (start
<= addr
|| start
>= toaddr
))
1219 bfd_put_signed_32 (abfd
, (bfd_vma
) voff
- count
,
1220 ocontents
+ irelscan
->r_offset
);
1223 if (ELF32_R_TYPE (irelscan
->r_info
) != (int) R_SH_DIR32
)
1226 if (ELF32_R_SYM (irelscan
->r_info
) >= symtab_hdr
->sh_info
)
1230 isym
= isymbuf
+ ELF32_R_SYM (irelscan
->r_info
);
1231 if (isym
->st_shndx
== sec_shndx
1232 && (isym
->st_value
<= addr
1233 || isym
->st_value
>= toaddr
))
1237 if (ocontents
== NULL
)
1239 if (elf_section_data (o
)->this_hdr
.contents
!= NULL
)
1240 ocontents
= elf_section_data (o
)->this_hdr
.contents
;
1243 /* We always cache the section contents.
1244 Perhaps, if info->keep_memory is FALSE, we
1245 should free them, if we are permitted to,
1246 when we leave sh_coff_relax_section. */
1247 if (!bfd_malloc_and_get_section (abfd
, o
, &ocontents
))
1253 elf_section_data (o
)->this_hdr
.contents
= ocontents
;
1257 val
= bfd_get_32 (abfd
, ocontents
+ irelscan
->r_offset
);
1258 val
+= isym
->st_value
;
1259 if (val
> addr
&& val
< toaddr
)
1260 bfd_put_32 (abfd
, val
- count
,
1261 ocontents
+ irelscan
->r_offset
);
1266 /* Adjust the local symbols defined in this section. */
1267 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
1268 for (isym
= isymbuf
; isym
< isymend
; isym
++)
1270 if (isym
->st_shndx
== sec_shndx
1271 && isym
->st_value
> addr
1272 && isym
->st_value
< toaddr
)
1273 isym
->st_value
-= count
;
1276 /* Now adjust the global symbols defined in this section. */
1277 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
1278 - symtab_hdr
->sh_info
);
1279 sym_hashes
= elf_sym_hashes (abfd
);
1280 end_hashes
= sym_hashes
+ symcount
;
1281 for (; sym_hashes
< end_hashes
; sym_hashes
++)
1283 struct elf_link_hash_entry
*sym_hash
= *sym_hashes
;
1284 if ((sym_hash
->root
.type
== bfd_link_hash_defined
1285 || sym_hash
->root
.type
== bfd_link_hash_defweak
)
1286 && sym_hash
->root
.u
.def
.section
== sec
1287 && sym_hash
->root
.u
.def
.value
> addr
1288 && sym_hash
->root
.u
.def
.value
< toaddr
)
1290 sym_hash
->root
.u
.def
.value
-= count
;
1294 /* See if we can move the ALIGN reloc forward. We have adjusted
1295 r_offset for it already. */
1296 if (irelalign
!= NULL
)
1298 bfd_vma alignto
, alignaddr
;
1300 alignto
= BFD_ALIGN (toaddr
, 1 << irelalign
->r_addend
);
1301 alignaddr
= BFD_ALIGN (irelalign
->r_offset
,
1302 1 << irelalign
->r_addend
);
1303 if (alignto
!= alignaddr
)
1305 /* Tail recursion. */
1306 return sh_elf_relax_delete_bytes (abfd
, sec
, alignaddr
,
1307 (int) (alignto
- alignaddr
));
1314 /* Look for loads and stores which we can align to four byte
1315 boundaries. This is like sh_align_loads in coff-sh.c. */
1318 sh_elf_align_loads (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
,
1319 Elf_Internal_Rela
*internal_relocs
,
1320 bfd_byte
*contents ATTRIBUTE_UNUSED
,
1321 bfd_boolean
*pswapped
)
1323 Elf_Internal_Rela
*irel
, *irelend
;
1324 bfd_vma
*labels
= NULL
;
1325 bfd_vma
*label
, *label_end
;
1330 irelend
= internal_relocs
+ sec
->reloc_count
;
1332 /* Get all the addresses with labels on them. */
1333 amt
= sec
->reloc_count
;
1334 amt
*= sizeof (bfd_vma
);
1335 labels
= (bfd_vma
*) bfd_malloc (amt
);
1339 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
1341 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_LABEL
)
1343 *label_end
= irel
->r_offset
;
1348 /* Note that the assembler currently always outputs relocs in
1349 address order. If that ever changes, this code will need to sort
1350 the label values and the relocs. */
1354 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
1356 bfd_vma start
, stop
;
1358 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_SH_CODE
)
1361 start
= irel
->r_offset
;
1363 for (irel
++; irel
< irelend
; irel
++)
1364 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_DATA
)
1367 stop
= irel
->r_offset
;
1371 if (! _bfd_sh_align_load_span (abfd
, sec
, contents
, sh_elf_swap_insns
,
1372 internal_relocs
, &label
,
1373 label_end
, start
, stop
, pswapped
))
1386 /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */
1389 sh_elf_swap_insns (bfd
*abfd
, asection
*sec
, void *relocs
,
1390 bfd_byte
*contents
, bfd_vma addr
)
1392 Elf_Internal_Rela
*internal_relocs
= (Elf_Internal_Rela
*) relocs
;
1393 unsigned short i1
, i2
;
1394 Elf_Internal_Rela
*irel
, *irelend
;
1396 /* Swap the instructions themselves. */
1397 i1
= bfd_get_16 (abfd
, contents
+ addr
);
1398 i2
= bfd_get_16 (abfd
, contents
+ addr
+ 2);
1399 bfd_put_16 (abfd
, (bfd_vma
) i2
, contents
+ addr
);
1400 bfd_put_16 (abfd
, (bfd_vma
) i1
, contents
+ addr
+ 2);
1402 /* Adjust all reloc addresses. */
1403 irelend
= internal_relocs
+ sec
->reloc_count
;
1404 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
1406 enum elf_sh_reloc_type type
;
1409 /* There are a few special types of relocs that we don't want to
1410 adjust. These relocs do not apply to the instruction itself,
1411 but are only associated with the address. */
1412 type
= (enum elf_sh_reloc_type
) ELF32_R_TYPE (irel
->r_info
);
1413 if (type
== R_SH_ALIGN
1414 || type
== R_SH_CODE
1415 || type
== R_SH_DATA
1416 || type
== R_SH_LABEL
)
1419 /* If an R_SH_USES reloc points to one of the addresses being
1420 swapped, we must adjust it. It would be incorrect to do this
1421 for a jump, though, since we want to execute both
1422 instructions after the jump. (We have avoided swapping
1423 around a label, so the jump will not wind up executing an
1424 instruction it shouldn't). */
1425 if (type
== R_SH_USES
)
1429 off
= irel
->r_offset
+ 4 + irel
->r_addend
;
1431 irel
->r_offset
+= 2;
1432 else if (off
== addr
+ 2)
1433 irel
->r_offset
-= 2;
1436 if (irel
->r_offset
== addr
)
1438 irel
->r_offset
+= 2;
1441 else if (irel
->r_offset
== addr
+ 2)
1443 irel
->r_offset
-= 2;
1452 unsigned short insn
, oinsn
;
1453 bfd_boolean overflow
;
1455 loc
= contents
+ irel
->r_offset
;
1464 insn
= bfd_get_16 (abfd
, loc
);
1467 if ((oinsn
& 0xff00) != (insn
& 0xff00))
1469 bfd_put_16 (abfd
, (bfd_vma
) insn
, loc
);
1473 insn
= bfd_get_16 (abfd
, loc
);
1476 if ((oinsn
& 0xf000) != (insn
& 0xf000))
1478 bfd_put_16 (abfd
, (bfd_vma
) insn
, loc
);
1482 /* This reloc ignores the least significant 3 bits of
1483 the program counter before adding in the offset.
1484 This means that if ADDR is at an even address, the
1485 swap will not affect the offset. If ADDR is an at an
1486 odd address, then the instruction will be crossing a
1487 four byte boundary, and must be adjusted. */
1488 if ((addr
& 3) != 0)
1490 insn
= bfd_get_16 (abfd
, loc
);
1493 if ((oinsn
& 0xff00) != (insn
& 0xff00))
1495 bfd_put_16 (abfd
, (bfd_vma
) insn
, loc
);
1504 /* xgettext:c-format */
1505 (_("%pB: %#" PRIx64
": fatal: reloc overflow while relaxing"),
1506 abfd
, (uint64_t) irel
->r_offset
);
1507 bfd_set_error (bfd_error_bad_value
);
1516 /* Describes one of the various PLT styles. */
1518 struct elf_sh_plt_info
1520 /* The template for the first PLT entry, or NULL if there is no special
1522 const bfd_byte
*plt0_entry
;
1524 /* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL. */
1525 bfd_vma plt0_entry_size
;
1527 /* Index I is the offset into PLT0_ENTRY of a pointer to
1528 _GLOBAL_OFFSET_TABLE_ + I * 4. The value is MINUS_ONE
1529 if there is no such pointer. */
1530 bfd_vma plt0_got_fields
[3];
1532 /* The template for a symbol's PLT entry. */
1533 const bfd_byte
*symbol_entry
;
1535 /* The size of SYMBOL_ENTRY in bytes. */
1536 bfd_vma symbol_entry_size
;
1538 /* Byte offsets of fields in SYMBOL_ENTRY. Not all fields are used
1539 on all targets. The comments by each member indicate the value
1540 that the field must hold. */
1542 bfd_vma got_entry
; /* the address of the symbol's .got.plt entry */
1543 bfd_vma plt
; /* .plt (or a branch to .plt on VxWorks) */
1544 bfd_vma reloc_offset
; /* the offset of the symbol's JMP_SLOT reloc */
1545 bfd_boolean got20
; /* TRUE if got_entry points to a movi20
1546 instruction (instead of a constant pool
1550 /* The offset of the resolver stub from the start of SYMBOL_ENTRY. */
1551 bfd_vma symbol_resolve_offset
;
1553 /* A different PLT layout which can be used for the first
1554 MAX_SHORT_PLT entries. It must share the same plt0. NULL in
1556 const struct elf_sh_plt_info
*short_plt
;
1559 /* The size in bytes of an entry in the procedure linkage table. */
1561 #define ELF_PLT_ENTRY_SIZE 28
1563 /* First entry in an absolute procedure linkage table look like this. */
1565 /* Note - this code has been "optimised" not to use r2. r2 is used by
1566 GCC to return the address of large structures, so it should not be
1567 corrupted here. This does mean however, that this PLT does not conform
1568 to the SH PIC ABI. That spec says that r0 contains the type of the PLT
1569 and r2 contains the GOT id. This version stores the GOT id in r0 and
1570 ignores the type. Loaders can easily detect this difference however,
1571 since the type will always be 0 or 8, and the GOT ids will always be
1572 greater than or equal to 12. */
1573 static const bfd_byte elf_sh_plt0_entry_be
[ELF_PLT_ENTRY_SIZE
] =
1575 0xd0, 0x05, /* mov.l 2f,r0 */
1576 0x60, 0x02, /* mov.l @r0,r0 */
1577 0x2f, 0x06, /* mov.l r0,@-r15 */
1578 0xd0, 0x03, /* mov.l 1f,r0 */
1579 0x60, 0x02, /* mov.l @r0,r0 */
1580 0x40, 0x2b, /* jmp @r0 */
1581 0x60, 0xf6, /* mov.l @r15+,r0 */
1582 0x00, 0x09, /* nop */
1583 0x00, 0x09, /* nop */
1584 0x00, 0x09, /* nop */
1585 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1586 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1589 static const bfd_byte elf_sh_plt0_entry_le
[ELF_PLT_ENTRY_SIZE
] =
1591 0x05, 0xd0, /* mov.l 2f,r0 */
1592 0x02, 0x60, /* mov.l @r0,r0 */
1593 0x06, 0x2f, /* mov.l r0,@-r15 */
1594 0x03, 0xd0, /* mov.l 1f,r0 */
1595 0x02, 0x60, /* mov.l @r0,r0 */
1596 0x2b, 0x40, /* jmp @r0 */
1597 0xf6, 0x60, /* mov.l @r15+,r0 */
1598 0x09, 0x00, /* nop */
1599 0x09, 0x00, /* nop */
1600 0x09, 0x00, /* nop */
1601 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1602 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1605 /* Sebsequent entries in an absolute procedure linkage table look like
1608 static const bfd_byte elf_sh_plt_entry_be
[ELF_PLT_ENTRY_SIZE
] =
1610 0xd0, 0x04, /* mov.l 1f,r0 */
1611 0x60, 0x02, /* mov.l @(r0,r12),r0 */
1612 0xd1, 0x02, /* mov.l 0f,r1 */
1613 0x40, 0x2b, /* jmp @r0 */
1614 0x60, 0x13, /* mov r1,r0 */
1615 0xd1, 0x03, /* mov.l 2f,r1 */
1616 0x40, 0x2b, /* jmp @r0 */
1617 0x00, 0x09, /* nop */
1618 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1619 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1620 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1623 static const bfd_byte elf_sh_plt_entry_le
[ELF_PLT_ENTRY_SIZE
] =
1625 0x04, 0xd0, /* mov.l 1f,r0 */
1626 0x02, 0x60, /* mov.l @r0,r0 */
1627 0x02, 0xd1, /* mov.l 0f,r1 */
1628 0x2b, 0x40, /* jmp @r0 */
1629 0x13, 0x60, /* mov r1,r0 */
1630 0x03, 0xd1, /* mov.l 2f,r1 */
1631 0x2b, 0x40, /* jmp @r0 */
1632 0x09, 0x00, /* nop */
1633 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1634 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1635 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1638 /* Entries in a PIC procedure linkage table look like this. */
1640 static const bfd_byte elf_sh_pic_plt_entry_be
[ELF_PLT_ENTRY_SIZE
] =
1642 0xd0, 0x04, /* mov.l 1f,r0 */
1643 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1644 0x40, 0x2b, /* jmp @r0 */
1645 0x00, 0x09, /* nop */
1646 0x50, 0xc2, /* mov.l @(8,r12),r0 */
1647 0xd1, 0x03, /* mov.l 2f,r1 */
1648 0x40, 0x2b, /* jmp @r0 */
1649 0x50, 0xc1, /* mov.l @(4,r12),r0 */
1650 0x00, 0x09, /* nop */
1651 0x00, 0x09, /* nop */
1652 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1653 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1656 static const bfd_byte elf_sh_pic_plt_entry_le
[ELF_PLT_ENTRY_SIZE
] =
1658 0x04, 0xd0, /* mov.l 1f,r0 */
1659 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1660 0x2b, 0x40, /* jmp @r0 */
1661 0x09, 0x00, /* nop */
1662 0xc2, 0x50, /* mov.l @(8,r12),r0 */
1663 0x03, 0xd1, /* mov.l 2f,r1 */
1664 0x2b, 0x40, /* jmp @r0 */
1665 0xc1, 0x50, /* mov.l @(4,r12),r0 */
1666 0x09, 0x00, /* nop */
1667 0x09, 0x00, /* nop */
1668 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1669 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1672 static const struct elf_sh_plt_info elf_sh_plts
[2][2] = {
1675 /* Big-endian non-PIC. */
1676 elf_sh_plt0_entry_be
,
1678 { MINUS_ONE
, 24, 20 },
1679 elf_sh_plt_entry_be
,
1681 { 20, 16, 24, FALSE
},
1686 /* Little-endian non-PIC. */
1687 elf_sh_plt0_entry_le
,
1689 { MINUS_ONE
, 24, 20 },
1690 elf_sh_plt_entry_le
,
1692 { 20, 16, 24, FALSE
},
1699 /* Big-endian PIC. */
1700 elf_sh_plt0_entry_be
,
1702 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1703 elf_sh_pic_plt_entry_be
,
1705 { 20, MINUS_ONE
, 24, FALSE
},
1710 /* Little-endian PIC. */
1711 elf_sh_plt0_entry_le
,
1713 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1714 elf_sh_pic_plt_entry_le
,
1716 { 20, MINUS_ONE
, 24, FALSE
},
1723 #define VXWORKS_PLT_HEADER_SIZE 12
1724 #define VXWORKS_PLT_ENTRY_SIZE 24
1726 static const bfd_byte vxworks_sh_plt0_entry_be
[VXWORKS_PLT_HEADER_SIZE
] =
1728 0xd1, 0x01, /* mov.l @(8,pc),r1 */
1729 0x61, 0x12, /* mov.l @r1,r1 */
1730 0x41, 0x2b, /* jmp @r1 */
1731 0x00, 0x09, /* nop */
1732 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1735 static const bfd_byte vxworks_sh_plt0_entry_le
[VXWORKS_PLT_HEADER_SIZE
] =
1737 0x01, 0xd1, /* mov.l @(8,pc),r1 */
1738 0x12, 0x61, /* mov.l @r1,r1 */
1739 0x2b, 0x41, /* jmp @r1 */
1740 0x09, 0x00, /* nop */
1741 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1744 static const bfd_byte vxworks_sh_plt_entry_be
[VXWORKS_PLT_ENTRY_SIZE
] =
1746 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1747 0x60, 0x02, /* mov.l @r0,r0 */
1748 0x40, 0x2b, /* jmp @r0 */
1749 0x00, 0x09, /* nop */
1750 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1751 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1752 0xa0, 0x00, /* bra PLT (We need to fix the offset.) */
1753 0x00, 0x09, /* nop */
1754 0x00, 0x09, /* nop */
1755 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1758 static const bfd_byte vxworks_sh_plt_entry_le
[VXWORKS_PLT_ENTRY_SIZE
] =
1760 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1761 0x02, 0x60, /* mov.l @r0,r0 */
1762 0x2b, 0x40, /* jmp @r0 */
1763 0x09, 0x00, /* nop */
1764 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1765 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1766 0x00, 0xa0, /* bra PLT (We need to fix the offset.) */
1767 0x09, 0x00, /* nop */
1768 0x09, 0x00, /* nop */
1769 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1772 static const bfd_byte vxworks_sh_pic_plt_entry_be
[VXWORKS_PLT_ENTRY_SIZE
] =
1774 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1775 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1776 0x40, 0x2b, /* jmp @r0 */
1777 0x00, 0x09, /* nop */
1778 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1779 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1780 0x51, 0xc2, /* mov.l @(8,r12),r1 */
1781 0x41, 0x2b, /* jmp @r1 */
1782 0x00, 0x09, /* nop */
1783 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1786 static const bfd_byte vxworks_sh_pic_plt_entry_le
[VXWORKS_PLT_ENTRY_SIZE
] =
1788 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1789 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1790 0x2b, 0x40, /* jmp @r0 */
1791 0x09, 0x00, /* nop */
1792 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1793 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1794 0xc2, 0x51, /* mov.l @(8,r12),r1 */
1795 0x2b, 0x41, /* jmp @r1 */
1796 0x09, 0x00, /* nop */
1797 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1800 static const struct elf_sh_plt_info vxworks_sh_plts
[2][2] = {
1803 /* Big-endian non-PIC. */
1804 vxworks_sh_plt0_entry_be
,
1805 VXWORKS_PLT_HEADER_SIZE
,
1806 { MINUS_ONE
, MINUS_ONE
, 8 },
1807 vxworks_sh_plt_entry_be
,
1808 VXWORKS_PLT_ENTRY_SIZE
,
1809 { 8, 14, 20, FALSE
},
1814 /* Little-endian non-PIC. */
1815 vxworks_sh_plt0_entry_le
,
1816 VXWORKS_PLT_HEADER_SIZE
,
1817 { MINUS_ONE
, MINUS_ONE
, 8 },
1818 vxworks_sh_plt_entry_le
,
1819 VXWORKS_PLT_ENTRY_SIZE
,
1820 { 8, 14, 20, FALSE
},
1827 /* Big-endian PIC. */
1830 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1831 vxworks_sh_pic_plt_entry_be
,
1832 VXWORKS_PLT_ENTRY_SIZE
,
1833 { 8, MINUS_ONE
, 20, FALSE
},
1838 /* Little-endian PIC. */
1841 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1842 vxworks_sh_pic_plt_entry_le
,
1843 VXWORKS_PLT_ENTRY_SIZE
,
1844 { 8, MINUS_ONE
, 20, FALSE
},
1851 /* FDPIC PLT entries. Two unimplemented optimizations for lazy
1852 binding are to omit the lazy binding stub when linking with -z now
1853 and to move lazy binding stubs into a separate region for better
1856 #define FDPIC_PLT_ENTRY_SIZE 28
1857 #define FDPIC_PLT_LAZY_OFFSET 20
1859 /* FIXME: The lazy binding stub requires a plt0 - which may need to be
1860 duplicated if it is out of range, or which can be inlined. So
1861 right now it is always inlined, which wastes a word per stub. It
1862 might be easier to handle the duplication if we put the lazy
1863 stubs separately. */
1865 static const bfd_byte fdpic_sh_plt_entry_be
[FDPIC_PLT_ENTRY_SIZE
] =
1867 0xd0, 0x02, /* mov.l @(12,pc),r0 */
1868 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1869 0x70, 0x04, /* add #4, r0 */
1870 0x41, 0x2b, /* jmp @r1 */
1871 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1872 0x00, 0x09, /* nop */
1873 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1874 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1875 0x60, 0xc2, /* mov.l @r12,r0 */
1876 0x40, 0x2b, /* jmp @r0 */
1877 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1878 0x00, 0x09, /* nop */
1881 static const bfd_byte fdpic_sh_plt_entry_le
[FDPIC_PLT_ENTRY_SIZE
] =
1883 0x02, 0xd0, /* mov.l @(12,pc),r0 */
1884 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1885 0x04, 0x70, /* add #4, r0 */
1886 0x2b, 0x41, /* jmp @r1 */
1887 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1888 0x09, 0x00, /* nop */
1889 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1890 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1891 0xc2, 0x60, /* mov.l @r12,r0 */
1892 0x2b, 0x40, /* jmp @r0 */
1893 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1894 0x09, 0x00, /* nop */
1897 static const struct elf_sh_plt_info fdpic_sh_plts
[2] = {
1899 /* Big-endian PIC. */
1902 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1903 fdpic_sh_plt_entry_be
,
1904 FDPIC_PLT_ENTRY_SIZE
,
1905 { 12, MINUS_ONE
, 16, FALSE
},
1906 FDPIC_PLT_LAZY_OFFSET
,
1910 /* Little-endian PIC. */
1913 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1914 fdpic_sh_plt_entry_le
,
1915 FDPIC_PLT_ENTRY_SIZE
,
1916 { 12, MINUS_ONE
, 16, FALSE
},
1917 FDPIC_PLT_LAZY_OFFSET
,
1922 /* On SH2A, we can use the movi20 instruction to generate shorter PLT
1923 entries for the first 64K slots. We use the normal FDPIC PLT entry
1924 past that point; we could also use movi20s, which might be faster,
1925 but would not be any smaller. */
1927 #define FDPIC_SH2A_PLT_ENTRY_SIZE 24
1928 #define FDPIC_SH2A_PLT_LAZY_OFFSET 16
1930 static const bfd_byte fdpic_sh2a_plt_entry_be
[FDPIC_SH2A_PLT_ENTRY_SIZE
] =
1932 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1933 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1934 0x70, 0x04, /* add #4, r0 */
1935 0x41, 0x2b, /* jmp @r1 */
1936 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1937 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1938 0x60, 0xc2, /* mov.l @r12,r0 */
1939 0x40, 0x2b, /* jmp @r0 */
1940 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1941 0x00, 0x09, /* nop */
1944 static const bfd_byte fdpic_sh2a_plt_entry_le
[FDPIC_SH2A_PLT_ENTRY_SIZE
] =
1946 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1947 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1948 0x04, 0x70, /* add #4, r0 */
1949 0x2b, 0x41, /* jmp @r1 */
1950 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1951 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1952 0xc2, 0x60, /* mov.l @r12,r0 */
1953 0x2b, 0x40, /* jmp @r0 */
1954 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1955 0x09, 0x00, /* nop */
1958 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_be
= {
1959 /* Big-endian FDPIC, max index 64K. */
1962 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1963 fdpic_sh2a_plt_entry_be
,
1964 FDPIC_SH2A_PLT_ENTRY_SIZE
,
1965 { 0, MINUS_ONE
, 12, TRUE
},
1966 FDPIC_SH2A_PLT_LAZY_OFFSET
,
1970 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_le
= {
1971 /* Little-endian FDPIC, max index 64K. */
1974 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1975 fdpic_sh2a_plt_entry_le
,
1976 FDPIC_SH2A_PLT_ENTRY_SIZE
,
1977 { 0, MINUS_ONE
, 12, TRUE
},
1978 FDPIC_SH2A_PLT_LAZY_OFFSET
,
1982 static const struct elf_sh_plt_info fdpic_sh2a_plts
[2] = {
1984 /* Big-endian PIC. */
1987 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1988 fdpic_sh_plt_entry_be
,
1989 FDPIC_PLT_ENTRY_SIZE
,
1990 { 12, MINUS_ONE
, 16, FALSE
},
1991 FDPIC_PLT_LAZY_OFFSET
,
1992 &fdpic_sh2a_short_plt_be
1995 /* Little-endian PIC. */
1998 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1999 fdpic_sh_plt_entry_le
,
2000 FDPIC_PLT_ENTRY_SIZE
,
2001 { 12, MINUS_ONE
, 16, FALSE
},
2002 FDPIC_PLT_LAZY_OFFSET
,
2003 &fdpic_sh2a_short_plt_le
2007 /* Return the type of PLT associated with ABFD. PIC_P is true if
2008 the object is position-independent. */
2010 static const struct elf_sh_plt_info
*
2011 get_plt_info (bfd
*abfd
, bfd_boolean pic_p
)
2013 if (fdpic_object_p (abfd
))
2015 /* If any input file requires SH2A we can use a shorter PLT
2017 if (sh_get_arch_from_bfd_mach (bfd_get_mach (abfd
)) & arch_sh2a_base
)
2018 return &fdpic_sh2a_plts
[!bfd_big_endian (abfd
)];
2020 return &fdpic_sh_plts
[!bfd_big_endian (abfd
)];
2022 if (vxworks_object_p (abfd
))
2023 return &vxworks_sh_plts
[pic_p
][!bfd_big_endian (abfd
)];
2024 return &elf_sh_plts
[pic_p
][!bfd_big_endian (abfd
)];
2027 /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
2028 VALUE is the field's value and CODE_P is true if VALUE refers to code,
2032 install_plt_field (bfd
*output_bfd
, bfd_boolean code_p ATTRIBUTE_UNUSED
,
2033 unsigned long value
, bfd_byte
*addr
)
2035 bfd_put_32 (output_bfd
, value
, addr
);
2038 /* The number of PLT entries which can use a shorter PLT, if any.
2039 Currently always 64K, since only SH-2A FDPIC uses this; a
2040 20-bit movi20 can address that many function descriptors below
2041 _GLOBAL_OFFSET_TABLE_. */
2042 #define MAX_SHORT_PLT 65536
2044 /* Return the index of the PLT entry at byte offset OFFSET. */
2047 get_plt_index (const struct elf_sh_plt_info
*info
, bfd_vma offset
)
2049 bfd_vma plt_index
= 0;
2051 offset
-= info
->plt0_entry_size
;
2052 if (info
->short_plt
!= NULL
)
2054 if (offset
> MAX_SHORT_PLT
* info
->short_plt
->symbol_entry_size
)
2056 plt_index
= MAX_SHORT_PLT
;
2057 offset
-= MAX_SHORT_PLT
* info
->short_plt
->symbol_entry_size
;
2060 info
= info
->short_plt
;
2062 return plt_index
+ offset
/ info
->symbol_entry_size
;
2065 /* Do the inverse operation. */
2068 get_plt_offset (const struct elf_sh_plt_info
*info
, bfd_vma plt_index
)
2072 if (info
->short_plt
!= NULL
)
2074 if (plt_index
> MAX_SHORT_PLT
)
2076 offset
= MAX_SHORT_PLT
* info
->short_plt
->symbol_entry_size
;
2077 plt_index
-= MAX_SHORT_PLT
;
2080 info
= info
->short_plt
;
2082 return (offset
+ info
->plt0_entry_size
2083 + (plt_index
* info
->symbol_entry_size
));
2088 bfd_signed_vma refcount
;
2092 /* sh ELF linker hash entry. */
2094 struct elf_sh_link_hash_entry
2096 struct elf_link_hash_entry root
;
2098 bfd_signed_vma gotplt_refcount
;
2100 /* A local function descriptor, for FDPIC. The refcount counts
2101 R_SH_FUNCDESC, R_SH_GOTOFFFUNCDESC, and R_SH_GOTOFFFUNCDESC20
2102 relocations; the PLT and GOT entry are accounted
2103 for separately. After adjust_dynamic_symbol, the offset is
2104 MINUS_ONE if there is no local descriptor (dynamic linker
2105 managed and no PLT entry, or undefined weak non-dynamic).
2106 During check_relocs we do not yet know whether the local
2107 descriptor will be canonical. */
2108 union gotref funcdesc
;
2110 /* How many of the above refcounted relocations were R_SH_FUNCDESC,
2111 and thus require fixups or relocations. */
2112 bfd_signed_vma abs_funcdesc_refcount
;
2115 GOT_UNKNOWN
= 0, GOT_NORMAL
, GOT_TLS_GD
, GOT_TLS_IE
, GOT_FUNCDESC
2119 #define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent))
2121 struct sh_elf_obj_tdata
2123 struct elf_obj_tdata root
;
2125 /* got_type for each local got entry. */
2126 char *local_got_type
;
2128 /* Function descriptor refcount and offset for each local symbol. */
2129 union gotref
*local_funcdesc
;
2132 #define sh_elf_tdata(abfd) \
2133 ((struct sh_elf_obj_tdata *) (abfd)->tdata.any)
2135 #define sh_elf_local_got_type(abfd) \
2136 (sh_elf_tdata (abfd)->local_got_type)
2138 #define sh_elf_local_funcdesc(abfd) \
2139 (sh_elf_tdata (abfd)->local_funcdesc)
2141 #define is_sh_elf(bfd) \
2142 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2143 && elf_tdata (bfd) != NULL \
2144 && elf_object_id (bfd) == SH_ELF_DATA)
2146 /* Override the generic function because we need to store sh_elf_obj_tdata
2147 as the specific tdata. */
2150 sh_elf_mkobject (bfd
*abfd
)
2152 return bfd_elf_allocate_object (abfd
, sizeof (struct sh_elf_obj_tdata
),
2156 /* sh ELF linker hash table. */
2158 struct elf_sh_link_hash_table
2160 struct elf_link_hash_table root
;
2162 /* Short-cuts to get to dynamic linker sections. */
2165 asection
*sfuncdesc
;
2166 asection
*srelfuncdesc
;
2169 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2172 /* Small local sym cache. */
2173 struct sym_cache sym_cache
;
2175 /* A counter or offset to track a TLS got entry. */
2178 bfd_signed_vma refcount
;
2182 /* The type of PLT to use. */
2183 const struct elf_sh_plt_info
*plt_info
;
2185 /* True if the target system is VxWorks. */
2186 bfd_boolean vxworks_p
;
2188 /* True if the target system uses FDPIC. */
2189 bfd_boolean fdpic_p
;
2192 /* Traverse an sh ELF linker hash table. */
2194 #define sh_elf_link_hash_traverse(table, func, info) \
2195 (elf_link_hash_traverse \
2197 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2200 /* Get the sh ELF linker hash table from a link_info structure. */
2202 #define sh_elf_hash_table(p) \
2203 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2204 == SH_ELF_DATA ? ((struct elf_sh_link_hash_table *) ((p)->hash)) : NULL)
2206 /* Create an entry in an sh ELF linker hash table. */
2208 static struct bfd_hash_entry
*
2209 sh_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
2210 struct bfd_hash_table
*table
,
2213 struct elf_sh_link_hash_entry
*ret
=
2214 (struct elf_sh_link_hash_entry
*) entry
;
2216 /* Allocate the structure if it has not already been allocated by a
2218 if (ret
== (struct elf_sh_link_hash_entry
*) NULL
)
2219 ret
= ((struct elf_sh_link_hash_entry
*)
2220 bfd_hash_allocate (table
,
2221 sizeof (struct elf_sh_link_hash_entry
)));
2222 if (ret
== (struct elf_sh_link_hash_entry
*) NULL
)
2223 return (struct bfd_hash_entry
*) ret
;
2225 /* Call the allocation method of the superclass. */
2226 ret
= ((struct elf_sh_link_hash_entry
*)
2227 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2229 if (ret
!= (struct elf_sh_link_hash_entry
*) NULL
)
2231 ret
->gotplt_refcount
= 0;
2232 ret
->funcdesc
.refcount
= 0;
2233 ret
->abs_funcdesc_refcount
= 0;
2234 ret
->got_type
= GOT_UNKNOWN
;
2237 return (struct bfd_hash_entry
*) ret
;
2240 /* Create an sh ELF linker hash table. */
2242 static struct bfd_link_hash_table
*
2243 sh_elf_link_hash_table_create (bfd
*abfd
)
2245 struct elf_sh_link_hash_table
*ret
;
2246 size_t amt
= sizeof (struct elf_sh_link_hash_table
);
2248 ret
= (struct elf_sh_link_hash_table
*) bfd_zmalloc (amt
);
2249 if (ret
== (struct elf_sh_link_hash_table
*) NULL
)
2252 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
2253 sh_elf_link_hash_newfunc
,
2254 sizeof (struct elf_sh_link_hash_entry
),
2261 ret
->vxworks_p
= vxworks_object_p (abfd
);
2262 ret
->fdpic_p
= fdpic_object_p (abfd
);
2264 return &ret
->root
.root
;
2268 sh_elf_omit_section_dynsym (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2269 struct bfd_link_info
*info
, asection
*p
)
2271 struct elf_sh_link_hash_table
*htab
= sh_elf_hash_table (info
);
2273 /* Non-FDPIC binaries do not need dynamic symbols for sections. */
2277 /* We need dynamic symbols for every section, since segments can
2278 relocate independently. */
2279 switch (elf_section_data (p
)->this_hdr
.sh_type
)
2283 /* If sh_type is yet undecided, assume it could be
2284 SHT_PROGBITS/SHT_NOBITS. */
2288 /* There shouldn't be section relative relocations
2289 against any other section. */
2295 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2296 shortcuts to them in our hash table. */
2299 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
2301 struct elf_sh_link_hash_table
*htab
;
2303 if (! _bfd_elf_create_got_section (dynobj
, info
))
2306 htab
= sh_elf_hash_table (info
);
2310 htab
->sfuncdesc
= bfd_make_section_anyway_with_flags (dynobj
, ".got.funcdesc",
2311 (SEC_ALLOC
| SEC_LOAD
2314 | SEC_LINKER_CREATED
));
2315 if (htab
->sfuncdesc
== NULL
2316 || !bfd_set_section_alignment (htab
->sfuncdesc
, 2))
2319 htab
->srelfuncdesc
= bfd_make_section_anyway_with_flags (dynobj
,
2320 ".rela.got.funcdesc",
2321 (SEC_ALLOC
| SEC_LOAD
2324 | SEC_LINKER_CREATED
2326 if (htab
->srelfuncdesc
== NULL
2327 || !bfd_set_section_alignment (htab
->srelfuncdesc
, 2))
2330 /* Also create .rofixup. */
2331 htab
->srofixup
= bfd_make_section_anyway_with_flags (dynobj
, ".rofixup",
2332 (SEC_ALLOC
| SEC_LOAD
2335 | SEC_LINKER_CREATED
2337 if (htab
->srofixup
== NULL
2338 || !bfd_set_section_alignment (htab
->srofixup
, 2))
2344 /* Create dynamic sections when linking against a dynamic object. */
2347 sh_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2349 struct elf_sh_link_hash_table
*htab
;
2350 flagword flags
, pltflags
;
2352 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2355 switch (bed
->s
->arch_size
)
2366 bfd_set_error (bfd_error_bad_value
);
2370 htab
= sh_elf_hash_table (info
);
2374 if (htab
->root
.dynamic_sections_created
)
2377 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2378 .rel[a].bss sections. */
2380 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2381 | SEC_LINKER_CREATED
);
2384 pltflags
|= SEC_CODE
;
2385 if (bed
->plt_not_loaded
)
2386 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
2387 if (bed
->plt_readonly
)
2388 pltflags
|= SEC_READONLY
;
2390 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
2391 htab
->root
.splt
= s
;
2393 || !bfd_set_section_alignment (s
, bed
->plt_alignment
))
2396 if (bed
->want_plt_sym
)
2398 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2400 struct elf_link_hash_entry
*h
;
2401 struct bfd_link_hash_entry
*bh
= NULL
;
2403 if (! (_bfd_generic_link_add_one_symbol
2404 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
,
2405 (bfd_vma
) 0, (const char *) NULL
, FALSE
,
2406 get_elf_backend_data (abfd
)->collect
, &bh
)))
2409 h
= (struct elf_link_hash_entry
*) bh
;
2411 h
->type
= STT_OBJECT
;
2412 htab
->root
.hplt
= h
;
2414 if (bfd_link_pic (info
)
2415 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
2419 s
= bfd_make_section_anyway_with_flags (abfd
,
2420 bed
->default_use_rela_p
2421 ? ".rela.plt" : ".rel.plt",
2422 flags
| SEC_READONLY
);
2423 htab
->root
.srelplt
= s
;
2425 || !bfd_set_section_alignment (s
, ptralign
))
2428 if (htab
->root
.sgot
== NULL
2429 && !create_got_section (abfd
, info
))
2432 if (bed
->want_dynbss
)
2434 /* The .dynbss section is a place to put symbols which are defined
2435 by dynamic objects, are referenced by regular objects, and are
2436 not functions. We must allocate space for them in the process
2437 image and use a R_*_COPY reloc to tell the dynamic linker to
2438 initialize them at run time. The linker script puts the .dynbss
2439 section into the .bss section of the final image. */
2440 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
2441 SEC_ALLOC
| SEC_LINKER_CREATED
);
2446 /* The .rel[a].bss section holds copy relocs. This section is not
2447 normally needed. We need to create it here, though, so that the
2448 linker will map it to an output section. We can't just create it
2449 only if we need it, because we will not know whether we need it
2450 until we have seen all the input files, and the first time the
2451 main linker code calls BFD after examining all the input files
2452 (size_dynamic_sections) the input sections have already been
2453 mapped to the output sections. If the section turns out not to
2454 be needed, we can discard it later. We will never need this
2455 section when generating a shared object, since they do not use
2457 if (! bfd_link_pic (info
))
2459 s
= bfd_make_section_anyway_with_flags (abfd
,
2460 (bed
->default_use_rela_p
2461 ? ".rela.bss" : ".rel.bss"),
2462 flags
| SEC_READONLY
);
2465 || !bfd_set_section_alignment (s
, ptralign
))
2470 if (htab
->vxworks_p
)
2472 if (!elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
2479 /* Adjust a symbol defined by a dynamic object and referenced by a
2480 regular object. The current definition is in some section of the
2481 dynamic object, but we're not including those sections. We have to
2482 change the definition to something the rest of the link can
2486 sh_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
2487 struct elf_link_hash_entry
*h
)
2489 struct elf_sh_link_hash_table
*htab
;
2492 htab
= sh_elf_hash_table (info
);
2496 /* Make sure we know what is going on here. */
2497 BFD_ASSERT (htab
->root
.dynobj
!= NULL
2502 && !h
->def_regular
)));
2504 /* If this is a function, put it in the procedure linkage table. We
2505 will fill in the contents of the procedure linkage table later,
2506 when we know the address of the .got section. */
2507 if (h
->type
== STT_FUNC
2510 if (h
->plt
.refcount
<= 0
2511 || SYMBOL_CALLS_LOCAL (info
, h
)
2512 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2513 && h
->root
.type
== bfd_link_hash_undefweak
))
2515 /* This case can occur if we saw a PLT reloc in an input
2516 file, but the symbol was never referred to by a dynamic
2517 object. In such a case, we don't actually need to build
2518 a procedure linkage table, and we can just do a REL32
2520 h
->plt
.offset
= (bfd_vma
) -1;
2527 h
->plt
.offset
= (bfd_vma
) -1;
2529 /* If this is a weak symbol, and there is a real definition, the
2530 processor independent code will have arranged for us to see the
2531 real definition first, and we can just use the same value. */
2532 if (h
->is_weakalias
)
2534 struct elf_link_hash_entry
*def
= weakdef (h
);
2535 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
2536 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
2537 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
2538 if (info
->nocopyreloc
)
2539 h
->non_got_ref
= def
->non_got_ref
;
2543 /* This is a reference to a symbol defined by a dynamic object which
2544 is not a function. */
2546 /* If we are creating a shared library, we must presume that the
2547 only references to the symbol are via the global offset table.
2548 For such cases we need not do anything here; the relocations will
2549 be handled correctly by relocate_section. */
2550 if (bfd_link_pic (info
))
2553 /* If there are no references to this symbol that do not use the
2554 GOT, we don't need to generate a copy reloc. */
2555 if (!h
->non_got_ref
)
2558 /* If -z nocopyreloc was given, we won't generate them either. */
2559 if (0 && info
->nocopyreloc
)
2565 /* If we don't find any dynamic relocs in read-only sections, then
2566 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2567 if (0 && !_bfd_elf_readonly_dynrelocs (h
))
2573 /* We must allocate the symbol in our .dynbss section, which will
2574 become part of the .bss section of the executable. There will be
2575 an entry for this symbol in the .dynsym section. The dynamic
2576 object will contain position independent code, so all references
2577 from the dynamic object to this symbol will go through the global
2578 offset table. The dynamic linker will use the .dynsym entry to
2579 determine the address it must put in the global offset table, so
2580 both the dynamic object and the regular object will refer to the
2581 same memory location for the variable. */
2584 BFD_ASSERT (s
!= NULL
);
2586 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2587 copy the initial value out of the dynamic object and into the
2588 runtime process image. We need to remember the offset into the
2589 .rela.bss section we are going to use. */
2590 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
2594 srel
= htab
->srelbss
;
2595 BFD_ASSERT (srel
!= NULL
);
2596 srel
->size
+= sizeof (Elf32_External_Rela
);
2600 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
2603 /* Allocate space in .plt, .got and associated reloc sections for
2607 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
2609 struct bfd_link_info
*info
;
2610 struct elf_sh_link_hash_table
*htab
;
2611 struct elf_sh_link_hash_entry
*eh
;
2612 struct elf_dyn_relocs
*p
;
2614 if (h
->root
.type
== bfd_link_hash_indirect
)
2617 info
= (struct bfd_link_info
*) inf
;
2618 htab
= sh_elf_hash_table (info
);
2622 eh
= (struct elf_sh_link_hash_entry
*) h
;
2623 if ((h
->got
.refcount
> 0
2625 && eh
->gotplt_refcount
> 0)
2627 /* The symbol has been forced local, or we have some direct got refs,
2628 so treat all the gotplt refs as got refs. */
2629 h
->got
.refcount
+= eh
->gotplt_refcount
;
2630 if (h
->plt
.refcount
>= eh
->gotplt_refcount
)
2631 h
->plt
.refcount
-= eh
->gotplt_refcount
;
2634 if (htab
->root
.dynamic_sections_created
2635 && h
->plt
.refcount
> 0
2636 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2637 || h
->root
.type
!= bfd_link_hash_undefweak
))
2639 /* Make sure this symbol is output as a dynamic symbol.
2640 Undefined weak syms won't yet be marked as dynamic. */
2641 if (h
->dynindx
== -1
2642 && !h
->forced_local
)
2644 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2648 if (bfd_link_pic (info
)
2649 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
2651 asection
*s
= htab
->root
.splt
;
2652 const struct elf_sh_plt_info
*plt_info
;
2654 /* If this is the first .plt entry, make room for the special
2657 s
->size
+= htab
->plt_info
->plt0_entry_size
;
2659 h
->plt
.offset
= s
->size
;
2661 /* If this symbol is not defined in a regular file, and we are
2662 not generating a shared library, then set the symbol to this
2663 location in the .plt. This is required to make function
2664 pointers compare as equal between the normal executable and
2665 the shared library. Skip this for FDPIC, since the
2666 function's address will be the address of the canonical
2667 function descriptor. */
2668 if (!htab
->fdpic_p
&& !bfd_link_pic (info
) && !h
->def_regular
)
2670 h
->root
.u
.def
.section
= s
;
2671 h
->root
.u
.def
.value
= h
->plt
.offset
;
2674 /* Make room for this entry. */
2675 plt_info
= htab
->plt_info
;
2676 if (plt_info
->short_plt
!= NULL
2677 && (get_plt_index (plt_info
->short_plt
, s
->size
) < MAX_SHORT_PLT
))
2678 plt_info
= plt_info
->short_plt
;
2679 s
->size
+= plt_info
->symbol_entry_size
;
2681 /* We also need to make an entry in the .got.plt section, which
2682 will be placed in the .got section by the linker script. */
2684 htab
->root
.sgotplt
->size
+= 4;
2686 htab
->root
.sgotplt
->size
+= 8;
2688 /* We also need to make an entry in the .rel.plt section. */
2689 htab
->root
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
2691 if (htab
->vxworks_p
&& !bfd_link_pic (info
))
2693 /* VxWorks executables have a second set of relocations
2694 for each PLT entry. They go in a separate relocation
2695 section, which is processed by the kernel loader. */
2697 /* There is a relocation for the initial PLT entry:
2698 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */
2699 if (h
->plt
.offset
== htab
->plt_info
->plt0_entry_size
)
2700 htab
->srelplt2
->size
+= sizeof (Elf32_External_Rela
);
2702 /* There are two extra relocations for each subsequent
2703 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2704 and an R_SH_DIR32 relocation for the PLT entry. */
2705 htab
->srelplt2
->size
+= sizeof (Elf32_External_Rela
) * 2;
2710 h
->plt
.offset
= (bfd_vma
) -1;
2716 h
->plt
.offset
= (bfd_vma
) -1;
2720 if (h
->got
.refcount
> 0)
2724 enum got_type got_type
= sh_elf_hash_entry (h
)->got_type
;
2726 /* Make sure this symbol is output as a dynamic symbol.
2727 Undefined weak syms won't yet be marked as dynamic. */
2728 if (h
->dynindx
== -1
2729 && !h
->forced_local
)
2731 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2735 s
= htab
->root
.sgot
;
2736 h
->got
.offset
= s
->size
;
2738 /* R_SH_TLS_GD needs 2 consecutive GOT slots. */
2739 if (got_type
== GOT_TLS_GD
)
2741 dyn
= htab
->root
.dynamic_sections_created
;
2744 /* No dynamic relocations required. */
2745 if (htab
->fdpic_p
&& !bfd_link_pic (info
)
2746 && h
->root
.type
!= bfd_link_hash_undefweak
2747 && (got_type
== GOT_NORMAL
|| got_type
== GOT_FUNCDESC
))
2748 htab
->srofixup
->size
+= 4;
2750 /* No dynamic relocations required when IE->LE conversion happens. */
2751 else if (got_type
== GOT_TLS_IE
2753 && !bfd_link_pic (info
))
2755 /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2756 R_SH_TLS_GD needs one if local symbol and two if global. */
2757 else if ((got_type
== GOT_TLS_GD
&& h
->dynindx
== -1)
2758 || got_type
== GOT_TLS_IE
)
2759 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2760 else if (got_type
== GOT_TLS_GD
)
2761 htab
->root
.srelgot
->size
+= 2 * sizeof (Elf32_External_Rela
);
2762 else if (got_type
== GOT_FUNCDESC
)
2764 if (!bfd_link_pic (info
) && SYMBOL_FUNCDESC_LOCAL (info
, h
))
2765 htab
->srofixup
->size
+= 4;
2767 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2769 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2770 || h
->root
.type
!= bfd_link_hash_undefweak
)
2771 && (bfd_link_pic (info
)
2772 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
2773 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2774 else if (htab
->fdpic_p
2775 && !bfd_link_pic (info
)
2776 && got_type
== GOT_NORMAL
2777 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2778 || h
->root
.type
!= bfd_link_hash_undefweak
))
2779 htab
->srofixup
->size
+= 4;
2782 h
->got
.offset
= (bfd_vma
) -1;
2784 /* Allocate space for any dynamic relocations to function
2785 descriptors, canonical or otherwise. We need to relocate the
2786 reference unless it resolves to zero, which only happens for
2787 undefined weak symbols (either non-default visibility, or when
2788 static linking). Any GOT slot is accounted for elsewhere. */
2789 if (eh
->abs_funcdesc_refcount
> 0
2790 && (h
->root
.type
!= bfd_link_hash_undefweak
2791 || (htab
->root
.dynamic_sections_created
2792 && ! SYMBOL_CALLS_LOCAL (info
, h
))))
2794 if (!bfd_link_pic (info
) && SYMBOL_FUNCDESC_LOCAL (info
, h
))
2795 htab
->srofixup
->size
+= eh
->abs_funcdesc_refcount
* 4;
2797 htab
->root
.srelgot
->size
2798 += eh
->abs_funcdesc_refcount
* sizeof (Elf32_External_Rela
);
2801 /* We must allocate a function descriptor if there are references to
2802 a canonical descriptor (R_SH_GOTFUNCDESC or R_SH_FUNCDESC) and
2803 the dynamic linker isn't going to allocate it. None of this
2804 applies if we already created one in .got.plt, but if the
2805 canonical function descriptor can be in this object, there
2806 won't be a PLT entry at all. */
2807 if ((eh
->funcdesc
.refcount
> 0
2808 || (h
->got
.offset
!= MINUS_ONE
&& eh
->got_type
== GOT_FUNCDESC
))
2809 && h
->root
.type
!= bfd_link_hash_undefweak
2810 && SYMBOL_FUNCDESC_LOCAL (info
, h
))
2812 /* Make room for this function descriptor. */
2813 eh
->funcdesc
.offset
= htab
->sfuncdesc
->size
;
2814 htab
->sfuncdesc
->size
+= 8;
2816 /* We will need a relocation or two fixups to initialize the
2817 function descriptor, so allocate those too. */
2818 if (!bfd_link_pic (info
) && SYMBOL_CALLS_LOCAL (info
, h
))
2819 htab
->srofixup
->size
+= 8;
2821 htab
->srelfuncdesc
->size
+= sizeof (Elf32_External_Rela
);
2824 if (h
->dyn_relocs
== NULL
)
2827 /* In the shared -Bsymbolic case, discard space allocated for
2828 dynamic pc-relative relocs against symbols which turn out to be
2829 defined in regular objects. For the normal shared case, discard
2830 space for pc-relative relocs that have become local due to symbol
2831 visibility changes. */
2833 if (bfd_link_pic (info
))
2835 if (SYMBOL_CALLS_LOCAL (info
, h
))
2837 struct elf_dyn_relocs
**pp
;
2839 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
; )
2841 p
->count
-= p
->pc_count
;
2850 if (htab
->vxworks_p
)
2852 struct elf_dyn_relocs
**pp
;
2854 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
; )
2856 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
2863 /* Also discard relocs on undefined weak syms with non-default
2865 if (h
->dyn_relocs
!= NULL
2866 && h
->root
.type
== bfd_link_hash_undefweak
)
2868 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2869 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
2870 h
->dyn_relocs
= NULL
;
2872 /* Make sure undefined weak symbols are output as a dynamic
2874 else if (h
->dynindx
== -1
2875 && !h
->forced_local
)
2877 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2884 /* For the non-shared case, discard space for relocs against
2885 symbols which turn out to need copy relocs or are not
2891 || (htab
->root
.dynamic_sections_created
2892 && (h
->root
.type
== bfd_link_hash_undefweak
2893 || h
->root
.type
== bfd_link_hash_undefined
))))
2895 /* Make sure this symbol is output as a dynamic symbol.
2896 Undefined weak syms won't yet be marked as dynamic. */
2897 if (h
->dynindx
== -1
2898 && !h
->forced_local
)
2900 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2904 /* If that succeeded, we know we'll be keeping all the
2906 if (h
->dynindx
!= -1)
2910 h
->dyn_relocs
= NULL
;
2915 /* Finally, allocate space. */
2916 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2918 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2919 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2921 /* If we need relocations, we do not need fixups. */
2922 if (htab
->fdpic_p
&& !bfd_link_pic (info
))
2923 htab
->srofixup
->size
-= 4 * (p
->count
- p
->pc_count
);
2929 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2930 read-only sections. */
2933 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
2937 if (h
->root
.type
== bfd_link_hash_indirect
)
2940 sec
= _bfd_elf_readonly_dynrelocs (h
);
2943 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
2945 info
->flags
|= DF_TEXTREL
;
2946 info
->callbacks
->minfo
2947 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
2948 sec
->owner
, h
->root
.root
.string
, sec
);
2950 /* Not an error, just cut short the traversal. */
2956 /* This function is called after all the input files have been read,
2957 and the input sections have been assigned to output sections.
2958 It's a convenient place to determine the PLT style. */
2961 sh_elf_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
2963 sh_elf_hash_table (info
)->plt_info
= get_plt_info (output_bfd
,
2964 bfd_link_pic (info
));
2966 if (sh_elf_hash_table (info
)->fdpic_p
&& !bfd_link_relocatable (info
)
2967 && !bfd_elf_stack_segment_size (output_bfd
, info
,
2968 "__stacksize", DEFAULT_STACK_SIZE
))
2973 /* Set the sizes of the dynamic sections. */
2976 sh_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2977 struct bfd_link_info
*info
)
2979 struct elf_sh_link_hash_table
*htab
;
2985 htab
= sh_elf_hash_table (info
);
2989 dynobj
= htab
->root
.dynobj
;
2990 BFD_ASSERT (dynobj
!= NULL
);
2992 if (htab
->root
.dynamic_sections_created
)
2994 /* Set the contents of the .interp section to the interpreter. */
2995 if (bfd_link_executable (info
) && !info
->nointerp
)
2997 s
= bfd_get_linker_section (dynobj
, ".interp");
2998 BFD_ASSERT (s
!= NULL
);
2999 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
3000 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
3004 /* Set up .got offsets for local syms, and space for local dynamic
3006 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
3008 bfd_signed_vma
*local_got
;
3009 bfd_signed_vma
*end_local_got
;
3010 union gotref
*local_funcdesc
, *end_local_funcdesc
;
3011 char *local_got_type
;
3012 bfd_size_type locsymcount
;
3013 Elf_Internal_Shdr
*symtab_hdr
;
3016 if (! is_sh_elf (ibfd
))
3019 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3021 struct elf_dyn_relocs
*p
;
3023 for (p
= ((struct elf_dyn_relocs
*)
3024 elf_section_data (s
)->local_dynrel
);
3028 if (! bfd_is_abs_section (p
->sec
)
3029 && bfd_is_abs_section (p
->sec
->output_section
))
3031 /* Input section has been discarded, either because
3032 it is a copy of a linkonce section or due to
3033 linker script /DISCARD/, so we'll be discarding
3036 else if (htab
->vxworks_p
3037 && strcmp (p
->sec
->output_section
->name
,
3040 /* Relocations in vxworks .tls_vars sections are
3041 handled specially by the loader. */
3043 else if (p
->count
!= 0)
3045 srel
= elf_section_data (p
->sec
)->sreloc
;
3046 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3047 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
3049 info
->flags
|= DF_TEXTREL
;
3050 info
->callbacks
->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
3051 p
->sec
->owner
, p
->sec
);
3054 /* If we need relocations, we do not need fixups. */
3055 if (htab
->fdpic_p
&& !bfd_link_pic (info
))
3056 htab
->srofixup
->size
-= 4 * (p
->count
- p
->pc_count
);
3061 symtab_hdr
= &elf_symtab_hdr (ibfd
);
3062 locsymcount
= symtab_hdr
->sh_info
;
3063 s
= htab
->root
.sgot
;
3064 srel
= htab
->root
.srelgot
;
3066 local_got
= elf_local_got_refcounts (ibfd
);
3069 end_local_got
= local_got
+ locsymcount
;
3070 local_got_type
= sh_elf_local_got_type (ibfd
);
3071 local_funcdesc
= sh_elf_local_funcdesc (ibfd
);
3072 for (; local_got
< end_local_got
; ++local_got
)
3076 *local_got
= s
->size
;
3078 if (*local_got_type
== GOT_TLS_GD
)
3080 if (bfd_link_pic (info
))
3081 srel
->size
+= sizeof (Elf32_External_Rela
);
3083 htab
->srofixup
->size
+= 4;
3085 if (*local_got_type
== GOT_FUNCDESC
)
3087 if (local_funcdesc
== NULL
)
3091 size
= locsymcount
* sizeof (union gotref
);
3092 local_funcdesc
= (union gotref
*) bfd_zalloc (ibfd
,
3094 if (local_funcdesc
== NULL
)
3096 sh_elf_local_funcdesc (ibfd
) = local_funcdesc
;
3097 local_funcdesc
+= (local_got
3098 - elf_local_got_refcounts (ibfd
));
3100 local_funcdesc
->refcount
++;
3105 *local_got
= (bfd_vma
) -1;
3110 local_funcdesc
= sh_elf_local_funcdesc (ibfd
);
3113 end_local_funcdesc
= local_funcdesc
+ locsymcount
;
3115 for (; local_funcdesc
< end_local_funcdesc
; ++local_funcdesc
)
3117 if (local_funcdesc
->refcount
> 0)
3119 local_funcdesc
->offset
= htab
->sfuncdesc
->size
;
3120 htab
->sfuncdesc
->size
+= 8;
3121 if (!bfd_link_pic (info
))
3122 htab
->srofixup
->size
+= 8;
3124 htab
->srelfuncdesc
->size
+= sizeof (Elf32_External_Rela
);
3127 local_funcdesc
->offset
= MINUS_ONE
;
3133 if (htab
->tls_ldm_got
.refcount
> 0)
3135 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3137 htab
->tls_ldm_got
.offset
= htab
->root
.sgot
->size
;
3138 htab
->root
.sgot
->size
+= 8;
3139 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
3142 htab
->tls_ldm_got
.offset
= -1;
3144 /* Only the reserved entries should be present. For FDPIC, they go at
3145 the end of .got.plt. */
3148 BFD_ASSERT (htab
->root
.sgotplt
&& htab
->root
.sgotplt
->size
== 12);
3149 htab
->root
.sgotplt
->size
= 0;
3152 /* Allocate global sym .plt and .got entries, and space for global
3153 sym dynamic relocs. */
3154 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
3156 /* Move the reserved entries and the _GLOBAL_OFFSET_TABLE_ symbol to the
3157 end of the FDPIC .got.plt. */
3160 htab
->root
.hgot
->root
.u
.def
.value
= htab
->root
.sgotplt
->size
;
3161 htab
->root
.sgotplt
->size
+= 12;
3164 /* At the very end of the .rofixup section is a pointer to the GOT. */
3165 if (htab
->fdpic_p
&& htab
->srofixup
!= NULL
)
3166 htab
->srofixup
->size
+= 4;
3168 /* We now have determined the sizes of the various dynamic sections.
3169 Allocate memory for them. */
3171 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3173 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3176 if (s
== htab
->root
.splt
3177 || s
== htab
->root
.sgot
3178 || s
== htab
->root
.sgotplt
3179 || s
== htab
->sfuncdesc
3180 || s
== htab
->srofixup
3181 || s
== htab
->sdynbss
)
3183 /* Strip this section if we don't need it; see the
3186 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
3188 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
&& s
!= htab
->srelplt2
)
3191 /* We use the reloc_count field as a counter if we need
3192 to copy relocs into the output file. */
3197 /* It's not one of our sections, so don't allocate space. */
3203 /* If we don't need this section, strip it from the
3204 output file. This is mostly to handle .rela.bss and
3205 .rela.plt. We must create both sections in
3206 create_dynamic_sections, because they must be created
3207 before the linker maps input sections to output
3208 sections. The linker does that before
3209 adjust_dynamic_symbol is called, and it is that
3210 function which decides whether anything needs to go
3211 into these sections. */
3213 s
->flags
|= SEC_EXCLUDE
;
3217 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
3220 /* Allocate memory for the section contents. We use bfd_zalloc
3221 here in case unused entries are not reclaimed before the
3222 section's contents are written out. This should not happen,
3223 but this way if it does, we get a R_SH_NONE reloc instead
3225 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
3226 if (s
->contents
== NULL
)
3230 if (htab
->root
.dynamic_sections_created
)
3232 /* Add some entries to the .dynamic section. We fill in the
3233 values later, in sh_elf_finish_dynamic_sections, but we
3234 must add the entries now so that we get the correct size for
3235 the .dynamic section. The DT_DEBUG entry is filled in by the
3236 dynamic linker and used by the debugger. */
3237 #define add_dynamic_entry(TAG, VAL) \
3238 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3240 if (bfd_link_executable (info
))
3242 if (! add_dynamic_entry (DT_DEBUG
, 0))
3246 if (htab
->root
.splt
->size
!= 0)
3248 if (! add_dynamic_entry (DT_PLTGOT
, 0)
3249 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
3250 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3251 || ! add_dynamic_entry (DT_JMPREL
, 0))
3254 else if ((elf_elfheader (output_bfd
)->e_flags
& EF_SH_FDPIC
))
3256 if (! add_dynamic_entry (DT_PLTGOT
, 0))
3262 if (! add_dynamic_entry (DT_RELA
, 0)
3263 || ! add_dynamic_entry (DT_RELASZ
, 0)
3264 || ! add_dynamic_entry (DT_RELAENT
,
3265 sizeof (Elf32_External_Rela
)))
3268 /* If any dynamic relocs apply to a read-only section,
3269 then we need a DT_TEXTREL entry. */
3270 if ((info
->flags
& DF_TEXTREL
) == 0)
3271 elf_link_hash_traverse (&htab
->root
, maybe_set_textrel
, info
);
3273 if ((info
->flags
& DF_TEXTREL
) != 0)
3275 if (! add_dynamic_entry (DT_TEXTREL
, 0))
3280 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
3283 #undef add_dynamic_entry
3288 /* Add a dynamic relocation to the SRELOC section. */
3290 inline static bfd_vma
3291 sh_elf_add_dyn_reloc (bfd
*output_bfd
, asection
*sreloc
, bfd_vma offset
,
3292 int reloc_type
, long dynindx
, bfd_vma addend
)
3294 Elf_Internal_Rela outrel
;
3295 bfd_vma reloc_offset
;
3297 outrel
.r_offset
= offset
;
3298 outrel
.r_info
= ELF32_R_INFO (dynindx
, reloc_type
);
3299 outrel
.r_addend
= addend
;
3301 reloc_offset
= sreloc
->reloc_count
* sizeof (Elf32_External_Rela
);
3302 BFD_ASSERT (reloc_offset
< sreloc
->size
);
3303 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
3304 sreloc
->contents
+ reloc_offset
);
3305 sreloc
->reloc_count
++;
3307 return reloc_offset
;
3310 /* Add an FDPIC read-only fixup. */
3313 sh_elf_add_rofixup (bfd
*output_bfd
, asection
*srofixup
, bfd_vma offset
)
3315 bfd_vma fixup_offset
;
3317 fixup_offset
= srofixup
->reloc_count
++ * 4;
3318 BFD_ASSERT (fixup_offset
< srofixup
->size
);
3319 bfd_put_32 (output_bfd
, offset
, srofixup
->contents
+ fixup_offset
);
3322 /* Return the offset of the generated .got section from the
3323 _GLOBAL_OFFSET_TABLE_ symbol. */
3325 static bfd_signed_vma
3326 sh_elf_got_offset (struct elf_sh_link_hash_table
*htab
)
3328 return (htab
->root
.sgot
->output_offset
- htab
->root
.sgotplt
->output_offset
3329 - htab
->root
.hgot
->root
.u
.def
.value
);
3332 /* Find the segment number in which OSEC, and output section, is
3336 sh_elf_osec_to_segment (bfd
*output_bfd
, asection
*osec
)
3338 Elf_Internal_Phdr
*p
= NULL
;
3340 if (output_bfd
->xvec
->flavour
== bfd_target_elf_flavour
3341 /* PR ld/17110: Do not look for output segments in an input bfd. */
3342 && output_bfd
->direction
!= read_direction
)
3343 p
= _bfd_elf_find_segment_containing_section (output_bfd
, osec
);
3345 /* FIXME: Nothing ever says what this index is relative to. The kernel
3346 supplies data in terms of the number of load segments but this is
3347 a phdr index and the first phdr may not be a load segment. */
3348 return (p
!= NULL
) ? p
- elf_tdata (output_bfd
)->phdr
: -1;
3352 sh_elf_osec_readonly_p (bfd
*output_bfd
, asection
*osec
)
3354 unsigned seg
= sh_elf_osec_to_segment (output_bfd
, osec
);
3356 return (seg
!= (unsigned) -1
3357 && ! (elf_tdata (output_bfd
)->phdr
[seg
].p_flags
& PF_W
));
3360 /* Generate the initial contents of a local function descriptor, along
3361 with any relocations or fixups required. */
3363 sh_elf_initialize_funcdesc (bfd
*output_bfd
,
3364 struct bfd_link_info
*info
,
3365 struct elf_link_hash_entry
*h
,
3370 struct elf_sh_link_hash_table
*htab
;
3374 htab
= sh_elf_hash_table (info
);
3376 /* FIXME: The ABI says that the offset to the function goes in the
3377 descriptor, along with the segment index. We're RELA, so it could
3378 go in the reloc instead... */
3380 if (h
!= NULL
&& SYMBOL_CALLS_LOCAL (info
, h
))
3382 section
= h
->root
.u
.def
.section
;
3383 value
= h
->root
.u
.def
.value
;
3386 if (h
== NULL
|| SYMBOL_CALLS_LOCAL (info
, h
))
3388 dynindx
= elf_section_data (section
->output_section
)->dynindx
;
3389 addr
= value
+ section
->output_offset
;
3390 seg
= sh_elf_osec_to_segment (output_bfd
, section
->output_section
);
3394 BFD_ASSERT (h
->dynindx
!= -1);
3395 dynindx
= h
->dynindx
;
3399 if (!bfd_link_pic (info
) && SYMBOL_CALLS_LOCAL (info
, h
))
3401 if (h
== NULL
|| h
->root
.type
!= bfd_link_hash_undefweak
)
3403 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
3405 + htab
->sfuncdesc
->output_section
->vma
3406 + htab
->sfuncdesc
->output_offset
);
3407 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
3409 + htab
->sfuncdesc
->output_section
->vma
3410 + htab
->sfuncdesc
->output_offset
);
3413 /* There are no dynamic relocations so fill in the final
3414 address and gp value (barring fixups). */
3415 addr
+= section
->output_section
->vma
;
3416 seg
= htab
->root
.hgot
->root
.u
.def
.value
3417 + htab
->root
.hgot
->root
.u
.def
.section
->output_section
->vma
3418 + htab
->root
.hgot
->root
.u
.def
.section
->output_offset
;
3421 sh_elf_add_dyn_reloc (output_bfd
, htab
->srelfuncdesc
,
3423 + htab
->sfuncdesc
->output_section
->vma
3424 + htab
->sfuncdesc
->output_offset
,
3425 R_SH_FUNCDESC_VALUE
, dynindx
, 0);
3427 bfd_put_32 (output_bfd
, addr
, htab
->sfuncdesc
->contents
+ offset
);
3428 bfd_put_32 (output_bfd
, seg
, htab
->sfuncdesc
->contents
+ offset
+ 4);
3433 /* Install a 20-bit movi20 field starting at ADDR, which occurs in OUTPUT_BFD.
3434 VALUE is the field's value. Return bfd_reloc_ok if successful or an error
3437 static bfd_reloc_status_type
3438 install_movi20_field (bfd
*output_bfd
, unsigned long relocation
,
3439 bfd
*input_bfd
, asection
*input_section
,
3440 bfd_byte
*contents
, bfd_vma offset
)
3442 unsigned long cur_val
;
3444 bfd_reloc_status_type r
;
3446 if (offset
> bfd_get_section_limit (input_bfd
, input_section
))
3447 return bfd_reloc_outofrange
;
3449 r
= bfd_check_overflow (complain_overflow_signed
, 20, 0,
3450 bfd_arch_bits_per_address (input_bfd
), relocation
);
3451 if (r
!= bfd_reloc_ok
)
3454 addr
= contents
+ offset
;
3455 cur_val
= bfd_get_16 (output_bfd
, addr
);
3456 bfd_put_16 (output_bfd
, cur_val
| ((relocation
& 0xf0000) >> 12), addr
);
3457 bfd_put_16 (output_bfd
, relocation
& 0xffff, addr
+ 2);
3459 return bfd_reloc_ok
;
3462 /* Relocate an SH ELF section. */
3465 sh_elf_relocate_section (bfd
*output_bfd
, struct bfd_link_info
*info
,
3466 bfd
*input_bfd
, asection
*input_section
,
3467 bfd_byte
*contents
, Elf_Internal_Rela
*relocs
,
3468 Elf_Internal_Sym
*local_syms
,
3469 asection
**local_sections
)
3471 struct elf_sh_link_hash_table
*htab
;
3472 Elf_Internal_Shdr
*symtab_hdr
;
3473 struct elf_link_hash_entry
**sym_hashes
;
3474 Elf_Internal_Rela
*rel
, *relend
;
3475 bfd_vma
*local_got_offsets
;
3476 asection
*sgot
= NULL
;
3477 asection
*sgotplt
= NULL
;
3478 asection
*splt
= NULL
;
3479 asection
*sreloc
= NULL
;
3480 asection
*srelgot
= NULL
;
3481 bfd_boolean is_vxworks_tls
;
3482 unsigned isec_segment
, got_segment
, plt_segment
, check_segment
[2];
3483 bfd_boolean fdpic_p
= FALSE
;
3485 if (!is_sh_elf (input_bfd
))
3487 bfd_set_error (bfd_error_wrong_format
);
3491 htab
= sh_elf_hash_table (info
);
3494 sgot
= htab
->root
.sgot
;
3495 sgotplt
= htab
->root
.sgotplt
;
3496 srelgot
= htab
->root
.srelgot
;
3497 splt
= htab
->root
.splt
;
3498 fdpic_p
= htab
->fdpic_p
;
3500 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
3501 sym_hashes
= elf_sym_hashes (input_bfd
);
3502 local_got_offsets
= elf_local_got_offsets (input_bfd
);
3504 isec_segment
= sh_elf_osec_to_segment (output_bfd
,
3505 input_section
->output_section
);
3506 if (fdpic_p
&& sgot
)
3507 got_segment
= sh_elf_osec_to_segment (output_bfd
,
3508 sgot
->output_section
);
3511 if (fdpic_p
&& splt
)
3512 plt_segment
= sh_elf_osec_to_segment (output_bfd
,
3513 splt
->output_section
);
3517 /* We have to handle relocations in vxworks .tls_vars sections
3518 specially, because the dynamic loader is 'weird'. */
3519 is_vxworks_tls
= (htab
&& htab
->vxworks_p
&& bfd_link_pic (info
)
3520 && !strcmp (input_section
->output_section
->name
,
3524 relend
= relocs
+ input_section
->reloc_count
;
3525 for (; rel
< relend
; rel
++)
3528 reloc_howto_type
*howto
;
3529 unsigned long r_symndx
;
3530 Elf_Internal_Sym
*sym
;
3532 struct elf_link_hash_entry
*h
;
3534 bfd_vma addend
= (bfd_vma
) 0;
3535 bfd_reloc_status_type r
;
3537 enum got_type got_type
;
3538 const char *symname
= NULL
;
3539 bfd_boolean resolved_to_zero
;
3541 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3543 r_type
= ELF32_R_TYPE (rel
->r_info
);
3545 /* Many of the relocs are only used for relaxing, and are
3546 handled entirely by the relaxation code. */
3547 if (r_type
>= (int) R_SH_GNU_VTINHERIT
3548 && r_type
<= (int) R_SH_LABEL
)
3550 if (r_type
== (int) R_SH_NONE
)
3554 || r_type
>= R_SH_max
3555 || (r_type
>= (int) R_SH_FIRST_INVALID_RELOC
3556 && r_type
<= (int) R_SH_LAST_INVALID_RELOC
)
3557 || (r_type
>= (int) R_SH_FIRST_INVALID_RELOC_2
3558 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_2
)
3559 || ( r_type
>= (int) R_SH_FIRST_INVALID_RELOC_3
3560 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_3
)
3561 || ( r_type
>= (int) R_SH_FIRST_INVALID_RELOC_4
3562 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_4
)
3563 || ( r_type
>= (int) R_SH_FIRST_INVALID_RELOC_5
3564 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_5
)
3565 || ( r_type
>= (int) R_SH_FIRST_INVALID_RELOC_6
3566 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_6
))
3568 bfd_set_error (bfd_error_bad_value
);
3572 howto
= get_howto_table (output_bfd
) + r_type
;
3574 /* For relocs that aren't partial_inplace, we get the addend from
3576 if (! howto
->partial_inplace
)
3577 addend
= rel
->r_addend
;
3579 resolved_to_zero
= FALSE
;
3583 check_segment
[0] = -1;
3584 check_segment
[1] = -1;
3585 if (r_symndx
< symtab_hdr
->sh_info
)
3587 sym
= local_syms
+ r_symndx
;
3588 sec
= local_sections
[r_symndx
];
3590 symname
= bfd_elf_string_from_elf_section
3591 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
3592 if (symname
== NULL
|| *symname
== '\0')
3593 symname
= bfd_section_name (sec
);
3595 relocation
= (sec
->output_section
->vma
3596 + sec
->output_offset
3599 if (sec
!= NULL
&& discarded_section (sec
))
3600 /* Handled below. */
3602 else if (bfd_link_relocatable (info
))
3604 /* This is a relocatable link. We don't have to change
3605 anything, unless the reloc is against a section symbol,
3606 in which case we have to adjust according to where the
3607 section symbol winds up in the output section. */
3608 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
3610 if (! howto
->partial_inplace
)
3612 /* For relocations with the addend in the
3613 relocation, we need just to update the addend.
3614 All real relocs are of type partial_inplace; this
3615 code is mostly for completeness. */
3616 rel
->r_addend
+= sec
->output_offset
;
3621 /* Relocs of type partial_inplace need to pick up the
3622 contents in the contents and add the offset resulting
3623 from the changed location of the section symbol.
3624 Using _bfd_final_link_relocate (e.g. goto
3625 final_link_relocate) here would be wrong, because
3626 relocations marked pc_relative would get the current
3627 location subtracted, and we must only do that at the
3629 r
= _bfd_relocate_contents (howto
, input_bfd
,
3632 contents
+ rel
->r_offset
);
3633 goto relocation_done
;
3638 else if (! howto
->partial_inplace
)
3640 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
3641 addend
= rel
->r_addend
;
3643 else if ((sec
->flags
& SEC_MERGE
)
3644 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
3648 if (howto
->rightshift
|| howto
->src_mask
!= 0xffffffff)
3651 /* xgettext:c-format */
3652 (_("%pB(%pA+%#" PRIx64
"): "
3653 "%s relocation against SEC_MERGE section"),
3654 input_bfd
, input_section
,
3655 (uint64_t) rel
->r_offset
, howto
->name
);
3659 addend
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3662 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
3664 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
3665 bfd_put_32 (input_bfd
, addend
, contents
+ rel
->r_offset
);
3671 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3674 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3675 symname
= h
->root
.root
.string
;
3676 while (h
->root
.type
== bfd_link_hash_indirect
3677 || h
->root
.type
== bfd_link_hash_warning
)
3678 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3679 if (h
->root
.type
== bfd_link_hash_defined
3680 || h
->root
.type
== bfd_link_hash_defweak
)
3684 dyn
= htab
? htab
->root
.dynamic_sections_created
: FALSE
;
3685 sec
= h
->root
.u
.def
.section
;
3686 /* In these cases, we don't need the relocation value.
3687 We check specially because in some obscure cases
3688 sec->output_section will be NULL. */
3689 if (r_type
== R_SH_GOTPC
3690 || r_type
== R_SH_GOTPC_LOW16
3691 || r_type
== R_SH_GOTPC_MEDLOW16
3692 || r_type
== R_SH_GOTPC_MEDHI16
3693 || r_type
== R_SH_GOTPC_HI16
3694 || ((r_type
== R_SH_PLT32
3695 || r_type
== R_SH_PLT_LOW16
3696 || r_type
== R_SH_PLT_MEDLOW16
3697 || r_type
== R_SH_PLT_MEDHI16
3698 || r_type
== R_SH_PLT_HI16
)
3699 && h
->plt
.offset
!= (bfd_vma
) -1)
3700 || ((r_type
== R_SH_GOT32
3701 || r_type
== R_SH_GOT20
3702 || r_type
== R_SH_GOTFUNCDESC
3703 || r_type
== R_SH_GOTFUNCDESC20
3704 || r_type
== R_SH_GOTOFFFUNCDESC
3705 || r_type
== R_SH_GOTOFFFUNCDESC20
3706 || r_type
== R_SH_FUNCDESC
3707 || r_type
== R_SH_GOT_LOW16
3708 || r_type
== R_SH_GOT_MEDLOW16
3709 || r_type
== R_SH_GOT_MEDHI16
3710 || r_type
== R_SH_GOT_HI16
)
3711 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
3712 bfd_link_pic (info
),
3714 && (! bfd_link_pic (info
)
3715 || (! info
->symbolic
&& h
->dynindx
!= -1)
3716 || !h
->def_regular
))
3717 /* The cases above are those in which relocation is
3718 overwritten in the switch block below. The cases
3719 below are those in which we must defer relocation
3720 to run-time, because we can't resolve absolute
3721 addresses when creating a shared library. */
3722 || (bfd_link_pic (info
)
3723 && ((! info
->symbolic
&& h
->dynindx
!= -1)
3725 && ((r_type
== R_SH_DIR32
3726 && !h
->forced_local
)
3727 || (r_type
== R_SH_REL32
3728 && !SYMBOL_CALLS_LOCAL (info
, h
)))
3729 && ((input_section
->flags
& SEC_ALLOC
) != 0
3730 /* DWARF will emit R_SH_DIR32 relocations in its
3731 sections against symbols defined externally
3732 in shared libraries. We can't do anything
3734 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
3735 && h
->def_dynamic
)))
3736 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3737 sections because such sections are not SEC_ALLOC and
3738 thus ld.so will not process them. */
3739 || (sec
->output_section
== NULL
3740 && ((input_section
->flags
& SEC_DEBUGGING
) != 0
3742 || (sec
->output_section
== NULL
3743 && (sh_elf_hash_entry (h
)->got_type
== GOT_TLS_IE
3744 || sh_elf_hash_entry (h
)->got_type
== GOT_TLS_GD
)))
3746 else if (sec
->output_section
!= NULL
)
3747 relocation
= (h
->root
.u
.def
.value
3748 + sec
->output_section
->vma
3749 + sec
->output_offset
);
3750 else if (!bfd_link_relocatable (info
)
3751 && (_bfd_elf_section_offset (output_bfd
, info
,
3757 /* xgettext:c-format */
3758 (_("%pB(%pA+%#" PRIx64
"): "
3759 "unresolvable %s relocation against symbol `%s'"),
3762 (uint64_t) rel
->r_offset
,
3764 h
->root
.root
.string
);
3768 else if (h
->root
.type
== bfd_link_hash_undefweak
)
3769 resolved_to_zero
= UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
);
3770 else if (info
->unresolved_syms_in_objects
== RM_IGNORE
3771 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
3773 else if (!bfd_link_relocatable (info
))
3774 info
->callbacks
->undefined_symbol
3775 (info
, h
->root
.root
.string
, input_bfd
, input_section
,
3777 (info
->unresolved_syms_in_objects
== RM_DIAGNOSE
3778 && !info
->warn_unresolved_syms
)
3779 || ELF_ST_VISIBILITY (h
->other
));
3782 if (sec
!= NULL
&& discarded_section (sec
))
3783 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
3784 rel
, 1, relend
, howto
, 0, contents
);
3786 if (bfd_link_relocatable (info
))
3789 /* Check for inter-segment relocations in FDPIC files. Most
3790 relocations connect the relocation site to the location of
3791 the target symbol, but there are some exceptions below. */
3792 check_segment
[0] = isec_segment
;
3794 check_segment
[1] = sh_elf_osec_to_segment (output_bfd
,
3795 sec
->output_section
);
3797 check_segment
[1] = -1;
3799 switch ((int) r_type
)
3801 final_link_relocate
:
3802 /* COFF relocs don't use the addend. The addend is used for
3803 R_SH_DIR32 to be compatible with other compilers. */
3804 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3805 contents
, rel
->r_offset
,
3806 relocation
, addend
);
3810 goto final_link_relocate
;
3815 /* If the reloc is against the start of this section, then
3816 the assembler has already taken care of it and the reloc
3817 is here only to assist in relaxing. If the reloc is not
3818 against the start of this section, then it's against an
3819 external symbol and we must deal with it ourselves. */
3820 if (input_section
->output_section
->vma
+ input_section
->output_offset
3823 int disp
= (relocation
3824 - input_section
->output_section
->vma
3825 - input_section
->output_offset
3831 case R_SH_DIR8WPZ
: mask
= 1; break;
3832 case R_SH_DIR8WPL
: mask
= 3; break;
3833 default: mask
= 0; break;
3838 /* xgettext:c-format */
3839 (_("%pB: %#" PRIx64
": fatal: "
3840 "unaligned branch target for relax-support relocation"),
3841 input_section
->owner
,
3842 (uint64_t) rel
->r_offset
);
3843 bfd_set_error (bfd_error_bad_value
);
3847 goto final_link_relocate
;
3853 bfd_set_error (bfd_error_bad_value
);
3861 goto final_link_relocate
;
3868 /* xgettext:c-format */
3869 (_("%pB: %#" PRIx64
": fatal: "
3870 "unaligned %s relocation %#" PRIx64
),
3871 input_section
->owner
, (uint64_t) rel
->r_offset
,
3872 howto
->name
, (uint64_t) relocation
);
3873 bfd_set_error (bfd_error_bad_value
);
3876 goto final_link_relocate
;
3884 /* xgettext:c-format */
3885 (_("%pB: %#" PRIx64
": fatal: "
3886 "unaligned %s relocation %#" PRIx64
""),
3887 input_section
->owner
,
3888 (uint64_t) rel
->r_offset
, howto
->name
,
3889 (uint64_t) relocation
);
3890 bfd_set_error (bfd_error_bad_value
);
3893 goto final_link_relocate
;
3896 if ((signed int)relocation
< -32
3897 || (signed int)relocation
> 32)
3900 /* xgettext:c-format */
3901 (_("%pB: %#" PRIx64
": fatal: R_SH_PSHA relocation %" PRId64
3902 " not in range -32..32"),
3903 input_section
->owner
,
3904 (uint64_t) rel
->r_offset
,
3905 (int64_t) relocation
);
3906 bfd_set_error (bfd_error_bad_value
);
3909 goto final_link_relocate
;
3912 if ((signed int)relocation
< -16
3913 || (signed int)relocation
> 16)
3916 /* xgettext:c-format */
3917 (_("%pB: %#" PRIx64
": fatal: R_SH_PSHL relocation %" PRId64
3918 " not in range -32..32"),
3919 input_section
->owner
,
3920 (uint64_t) rel
->r_offset
,
3921 (int64_t) relocation
);
3922 bfd_set_error (bfd_error_bad_value
);
3925 goto final_link_relocate
;
3929 if (bfd_link_pic (info
)
3931 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
3932 && !resolved_to_zero
)
3933 || h
->root
.type
!= bfd_link_hash_undefweak
)
3934 && r_symndx
!= STN_UNDEF
3935 && (input_section
->flags
& SEC_ALLOC
) != 0
3937 && (r_type
== R_SH_DIR32
3938 || !SYMBOL_CALLS_LOCAL (info
, h
)))
3940 Elf_Internal_Rela outrel
;
3942 bfd_boolean skip
, relocate
;
3944 /* When generating a shared object, these relocations
3945 are copied into the output file to be resolved at run
3950 sreloc
= _bfd_elf_get_dynamic_reloc_section
3951 (input_bfd
, input_section
, /*rela?*/ TRUE
);
3960 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3962 if (outrel
.r_offset
== (bfd_vma
) -1)
3964 else if (outrel
.r_offset
== (bfd_vma
) -2)
3965 skip
= TRUE
, relocate
= TRUE
;
3966 outrel
.r_offset
+= (input_section
->output_section
->vma
3967 + input_section
->output_offset
);
3970 memset (&outrel
, 0, sizeof outrel
);
3971 else if (r_type
== R_SH_REL32
)
3973 BFD_ASSERT (h
!= NULL
&& h
->dynindx
!= -1);
3974 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_REL32
);
3976 = (howto
->partial_inplace
3977 ? bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
)
3982 || ((info
->symbolic
|| h
->dynindx
== -1)
3983 && h
->def_regular
)))
3987 BFD_ASSERT (sec
!= NULL
);
3988 BFD_ASSERT (sec
->output_section
!= NULL
);
3989 dynindx
= elf_section_data (sec
->output_section
)->dynindx
;
3990 outrel
.r_info
= ELF32_R_INFO (dynindx
, R_SH_DIR32
);
3991 outrel
.r_addend
= relocation
;
3993 += (howto
->partial_inplace
3994 ? bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
)
3996 outrel
.r_addend
-= sec
->output_section
->vma
;
4000 /* h->dynindx may be -1 if this symbol was marked to
4003 || ((info
->symbolic
|| h
->dynindx
== -1)
4006 relocate
= howto
->partial_inplace
;
4007 outrel
.r_info
= ELF32_R_INFO (0, R_SH_RELATIVE
);
4011 BFD_ASSERT (h
->dynindx
!= -1);
4012 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_DIR32
);
4014 outrel
.r_addend
= relocation
;
4016 += (howto
->partial_inplace
4017 ? bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
)
4021 loc
= sreloc
->contents
;
4022 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4023 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4025 check_segment
[0] = check_segment
[1] = -1;
4027 /* If this reloc is against an external symbol, we do
4028 not want to fiddle with the addend. Otherwise, we
4029 need to include the symbol value so that it becomes
4030 an addend for the dynamic reloc. */
4034 else if (fdpic_p
&& !bfd_link_pic (info
)
4035 && r_type
== R_SH_DIR32
4036 && (input_section
->flags
& SEC_ALLOC
) != 0)
4042 if (sh_elf_osec_readonly_p (output_bfd
,
4043 input_section
->output_section
))
4046 /* xgettext:c-format */
4047 (_("%pB(%pA+%#" PRIx64
"): "
4048 "cannot emit fixup to `%s' in read-only section"),
4051 (uint64_t) rel
->r_offset
,
4056 offset
= _bfd_elf_section_offset (output_bfd
, info
,
4057 input_section
, rel
->r_offset
);
4058 if (offset
!= (bfd_vma
)-1)
4059 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
4060 input_section
->output_section
->vma
4061 + input_section
->output_offset
4064 check_segment
[0] = check_segment
[1] = -1;
4066 /* We don't want warnings for non-NULL tests on undefined weak
4068 else if (r_type
== R_SH_REL32
4070 && h
->root
.type
== bfd_link_hash_undefweak
)
4071 check_segment
[0] = check_segment
[1] = -1;
4072 goto final_link_relocate
;
4075 /* Relocation is to the entry for this symbol in the
4076 procedure linkage table. */
4080 || ! bfd_link_pic (info
)
4083 || h
->plt
.offset
== (bfd_vma
) -1
4084 || h
->got
.offset
!= (bfd_vma
) -1)
4087 /* Relocation is to the entry for this symbol in the global
4088 offset table extension for the procedure linkage table. */
4091 BFD_ASSERT (sgotplt
!= NULL
);
4092 relocation
= (sgotplt
->output_offset
4093 + (get_plt_index (htab
->plt_info
, h
->plt
.offset
)
4097 relocation
-= GOT_BIAS
;
4100 goto final_link_relocate
;
4105 /* Relocation is to the entry for this symbol in the global
4109 BFD_ASSERT (sgot
!= NULL
);
4110 check_segment
[0] = check_segment
[1] = -1;
4116 off
= h
->got
.offset
;
4117 BFD_ASSERT (off
!= (bfd_vma
) -1);
4119 dyn
= htab
->root
.dynamic_sections_created
;
4120 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
4121 bfd_link_pic (info
),
4123 || (bfd_link_pic (info
)
4124 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4125 || ((ELF_ST_VISIBILITY (h
->other
)
4126 || resolved_to_zero
)
4127 && h
->root
.type
== bfd_link_hash_undefweak
))
4129 /* This is actually a static link, or it is a
4130 -Bsymbolic link and the symbol is defined
4131 locally, or the symbol was forced to be local
4132 because of a version file. We must initialize
4133 this entry in the global offset table. Since the
4134 offset must always be a multiple of 4, we use the
4135 least significant bit to record whether we have
4136 initialized it already.
4138 When doing a dynamic link, we create a .rela.got
4139 relocation entry to initialize the value. This
4140 is done in the finish_dynamic_symbol routine. */
4145 bfd_put_32 (output_bfd
, relocation
,
4146 sgot
->contents
+ off
);
4149 /* If we initialize the GOT entry here with a valid
4150 symbol address, also add a fixup. */
4151 if (fdpic_p
&& !bfd_link_pic (info
)
4152 && sh_elf_hash_entry (h
)->got_type
== GOT_NORMAL
4153 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
4154 || h
->root
.type
!= bfd_link_hash_undefweak
))
4155 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
4156 sgot
->output_section
->vma
4157 + sgot
->output_offset
4162 relocation
= sh_elf_got_offset (htab
) + off
;
4166 BFD_ASSERT (local_got_offsets
!= NULL
4167 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
4169 off
= local_got_offsets
[r_symndx
];
4171 /* The offset must always be a multiple of 4. We use
4172 the least significant bit to record whether we have
4173 already generated the necessary reloc. */
4178 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
4180 if (bfd_link_pic (info
))
4182 Elf_Internal_Rela outrel
;
4185 outrel
.r_offset
= (sgot
->output_section
->vma
4186 + sgot
->output_offset
4191 = elf_section_data (sec
->output_section
)->dynindx
;
4192 outrel
.r_info
= ELF32_R_INFO (dynindx
, R_SH_DIR32
);
4193 outrel
.r_addend
= relocation
;
4194 outrel
.r_addend
-= sec
->output_section
->vma
;
4198 outrel
.r_info
= ELF32_R_INFO (0, R_SH_RELATIVE
);
4199 outrel
.r_addend
= relocation
;
4201 loc
= srelgot
->contents
;
4202 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4203 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4206 && (sh_elf_local_got_type (input_bfd
) [r_symndx
]
4208 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
4209 sgot
->output_section
->vma
4210 + sgot
->output_offset
4213 local_got_offsets
[r_symndx
] |= 1;
4216 relocation
= sh_elf_got_offset (htab
) + off
;
4220 relocation
-= GOT_BIAS
;
4223 if (r_type
== R_SH_GOT20
)
4225 r
= install_movi20_field (output_bfd
, relocation
+ addend
,
4226 input_bfd
, input_section
, contents
,
4231 goto final_link_relocate
;
4235 /* GOTOFF relocations are relative to _GLOBAL_OFFSET_TABLE_, which
4236 we place at the start of the .got.plt section. This is the same
4237 as the start of the output .got section, unless there are function
4238 descriptors in front of it. */
4240 BFD_ASSERT (sgotplt
!= NULL
);
4241 check_segment
[0] = got_segment
;
4242 relocation
-= sgotplt
->output_section
->vma
+ sgotplt
->output_offset
4243 + htab
->root
.hgot
->root
.u
.def
.value
;
4246 relocation
-= GOT_BIAS
;
4249 addend
= rel
->r_addend
;
4251 if (r_type
== R_SH_GOTOFF20
)
4253 r
= install_movi20_field (output_bfd
, relocation
+ addend
,
4254 input_bfd
, input_section
, contents
,
4259 goto final_link_relocate
;
4262 /* Use global offset table as symbol value. */
4264 BFD_ASSERT (sgotplt
!= NULL
);
4265 relocation
= sgotplt
->output_section
->vma
+ sgotplt
->output_offset
;
4268 relocation
+= GOT_BIAS
;
4271 addend
= rel
->r_addend
;
4273 goto final_link_relocate
;
4276 /* Relocation is to the entry for this symbol in the
4277 procedure linkage table. */
4279 /* Resolve a PLT reloc against a local symbol directly,
4280 without using the procedure linkage table. */
4282 goto final_link_relocate
;
4284 /* We don't want to warn on calls to undefined weak symbols,
4285 as calls to them must be protected by non-NULL tests
4286 anyway, and unprotected calls would invoke undefined
4288 if (h
->root
.type
== bfd_link_hash_undefweak
)
4289 check_segment
[0] = check_segment
[1] = -1;
4291 if (h
->forced_local
)
4292 goto final_link_relocate
;
4294 if (h
->plt
.offset
== (bfd_vma
) -1)
4296 /* We didn't make a PLT entry for this symbol. This
4297 happens when statically linking PIC code, or when
4298 using -Bsymbolic. */
4299 goto final_link_relocate
;
4302 BFD_ASSERT (splt
!= NULL
);
4303 check_segment
[1] = plt_segment
;
4304 relocation
= (splt
->output_section
->vma
4305 + splt
->output_offset
4308 addend
= rel
->r_addend
;
4310 goto final_link_relocate
;
4312 /* Relocation is to the canonical function descriptor for this
4313 symbol, possibly via the GOT. Initialize the GOT
4314 entry and function descriptor if necessary. */
4315 case R_SH_GOTFUNCDESC
:
4316 case R_SH_GOTFUNCDESC20
:
4320 asection
*reloc_section
;
4321 bfd_vma reloc_offset
;
4322 int reloc_type
= R_SH_FUNCDESC
;
4326 check_segment
[0] = check_segment
[1] = -1;
4328 /* FIXME: See what FRV does for global symbols in the
4329 executable, with --export-dynamic. Do they need ld.so
4330 to allocate official descriptors? See what this code
4336 if (r_type
== R_SH_FUNCDESC
)
4338 reloc_section
= input_section
;
4339 reloc_offset
= rel
->r_offset
;
4343 reloc_section
= sgot
;
4346 reloc_offset
= h
->got
.offset
;
4349 BFD_ASSERT (local_got_offsets
!= NULL
);
4350 reloc_offset
= local_got_offsets
[r_symndx
];
4352 BFD_ASSERT (reloc_offset
!= MINUS_ONE
);
4354 if (reloc_offset
& 1)
4357 goto funcdesc_done_got
;
4361 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
4362 && (SYMBOL_CALLS_LOCAL (info
, h
)
4363 || !htab
->root
.dynamic_sections_created
))
4364 /* Undefined weak symbol which will not be dynamically
4365 resolved later; leave it at zero. */
4366 goto funcdesc_leave_zero
;
4367 else if (SYMBOL_CALLS_LOCAL (info
, h
)
4368 && ! SYMBOL_FUNCDESC_LOCAL (info
, h
))
4370 /* If the symbol needs a non-local function descriptor
4371 but binds locally (i.e., its visibility is
4372 protected), emit a dynamic relocation decayed to
4373 section+offset. This is an optimization; the dynamic
4374 linker would resolve our function descriptor request
4375 to our copy of the function anyway. */
4376 dynindx
= elf_section_data (h
->root
.u
.def
.section
4377 ->output_section
)->dynindx
;
4378 relocation
+= h
->root
.u
.def
.section
->output_offset
4379 + h
->root
.u
.def
.value
;
4381 else if (! SYMBOL_FUNCDESC_LOCAL (info
, h
))
4383 /* If the symbol is dynamic and there will be dynamic
4384 symbol resolution because we are or are linked with a
4385 shared library, emit a FUNCDESC relocation such that
4386 the dynamic linker will allocate the function
4388 BFD_ASSERT (h
->dynindx
!= -1);
4389 dynindx
= h
->dynindx
;
4395 /* Otherwise, we know we have a private function
4396 descriptor, so reference it directly. */
4397 reloc_type
= R_SH_DIR32
;
4398 dynindx
= elf_section_data (htab
->sfuncdesc
4399 ->output_section
)->dynindx
;
4403 offset
= sh_elf_hash_entry (h
)->funcdesc
.offset
;
4404 BFD_ASSERT (offset
!= MINUS_ONE
);
4405 if ((offset
& 1) == 0)
4407 if (!sh_elf_initialize_funcdesc (output_bfd
, info
, h
,
4410 sh_elf_hash_entry (h
)->funcdesc
.offset
|= 1;
4415 union gotref
*local_funcdesc
;
4417 local_funcdesc
= sh_elf_local_funcdesc (input_bfd
);
4418 offset
= local_funcdesc
[r_symndx
].offset
;
4419 BFD_ASSERT (offset
!= MINUS_ONE
);
4420 if ((offset
& 1) == 0)
4422 if (!sh_elf_initialize_funcdesc (output_bfd
, info
, NULL
,
4426 local_funcdesc
[r_symndx
].offset
|= 1;
4430 relocation
= htab
->sfuncdesc
->output_offset
+ (offset
& ~1);
4433 if (!bfd_link_pic (info
) && SYMBOL_FUNCDESC_LOCAL (info
, h
))
4437 if (sh_elf_osec_readonly_p (output_bfd
,
4438 reloc_section
->output_section
))
4441 /* xgettext:c-format */
4442 (_("%pB(%pA+%#" PRIx64
"): "
4443 "cannot emit fixup to `%s' in read-only section"),
4446 (uint64_t) rel
->r_offset
,
4451 offset
= _bfd_elf_section_offset (output_bfd
, info
,
4452 reloc_section
, reloc_offset
);
4454 if (offset
!= (bfd_vma
)-1)
4455 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
4457 + reloc_section
->output_section
->vma
4458 + reloc_section
->output_offset
);
4460 else if ((reloc_section
->output_section
->flags
4461 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
4465 if (sh_elf_osec_readonly_p (output_bfd
,
4466 reloc_section
->output_section
))
4468 info
->callbacks
->warning
4470 _("cannot emit dynamic relocations in read-only section"),
4471 symname
, input_bfd
, reloc_section
, reloc_offset
);
4475 offset
= _bfd_elf_section_offset (output_bfd
, info
,
4476 reloc_section
, reloc_offset
);
4478 if (offset
!= (bfd_vma
)-1)
4479 sh_elf_add_dyn_reloc (output_bfd
, srelgot
,
4481 + reloc_section
->output_section
->vma
4482 + reloc_section
->output_offset
,
4483 reloc_type
, dynindx
, relocation
);
4485 if (r_type
== R_SH_FUNCDESC
)
4493 goto funcdesc_leave_zero
;
4497 if (SYMBOL_FUNCDESC_LOCAL (info
, h
))
4498 relocation
+= htab
->sfuncdesc
->output_section
->vma
;
4499 funcdesc_leave_zero
:
4500 if (r_type
!= R_SH_FUNCDESC
)
4502 bfd_put_32 (output_bfd
, relocation
,
4503 reloc_section
->contents
+ reloc_offset
);
4507 local_got_offsets
[r_symndx
] |= 1;
4511 relocation
= sh_elf_got_offset (htab
) + reloc_offset
;
4513 relocation
-= GOT_BIAS
;
4516 if (r_type
== R_SH_GOTFUNCDESC20
)
4518 r
= install_movi20_field (output_bfd
, relocation
+ addend
,
4519 input_bfd
, input_section
, contents
,
4524 goto final_link_relocate
;
4528 case R_SH_GOTOFFFUNCDESC
:
4529 case R_SH_GOTOFFFUNCDESC20
:
4530 /* FIXME: See R_SH_FUNCDESC comment about global symbols in the
4531 executable and --export-dynamic. If such symbols get
4532 ld.so-allocated descriptors we can not use R_SH_GOTOFFFUNCDESC
4536 check_segment
[0] = check_segment
[1] = -1;
4538 addend
= rel
->r_addend
;
4540 if (h
&& (h
->root
.type
== bfd_link_hash_undefweak
4541 || !SYMBOL_FUNCDESC_LOCAL (info
, h
)))
4544 /* xgettext:c-format */
4545 (_("%pB(%pA+%#" PRIx64
"): "
4546 "%s relocation against external symbol \"%s\""),
4547 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
4548 howto
->name
, h
->root
.root
.string
);
4555 /* Otherwise, we know we have a private function
4556 descriptor, so reference it directly. */
4559 offset
= sh_elf_hash_entry (h
)->funcdesc
.offset
;
4560 BFD_ASSERT (offset
!= MINUS_ONE
);
4561 if ((offset
& 1) == 0)
4563 if (!sh_elf_initialize_funcdesc (output_bfd
, info
, h
,
4566 sh_elf_hash_entry (h
)->funcdesc
.offset
|= 1;
4571 union gotref
*local_funcdesc
;
4573 local_funcdesc
= sh_elf_local_funcdesc (input_bfd
);
4574 offset
= local_funcdesc
[r_symndx
].offset
;
4575 BFD_ASSERT (offset
!= MINUS_ONE
);
4576 if ((offset
& 1) == 0)
4578 if (!sh_elf_initialize_funcdesc (output_bfd
, info
, NULL
,
4582 local_funcdesc
[r_symndx
].offset
|= 1;
4586 relocation
= htab
->sfuncdesc
->output_offset
+ (offset
& ~1);
4589 relocation
-= (htab
->root
.hgot
->root
.u
.def
.value
4590 + sgotplt
->output_offset
);
4592 relocation
-= GOT_BIAS
;
4595 if (r_type
== R_SH_GOTOFFFUNCDESC20
)
4597 r
= install_movi20_field (output_bfd
, relocation
+ addend
,
4598 input_bfd
, input_section
, contents
,
4603 goto final_link_relocate
;
4605 case R_SH_LOOP_START
:
4607 static bfd_vma start
, end
;
4609 start
= (relocation
+ rel
->r_addend
4610 - (sec
->output_section
->vma
+ sec
->output_offset
));
4611 r
= sh_elf_reloc_loop (r_type
, input_bfd
, input_section
, contents
,
4612 rel
->r_offset
, sec
, start
, end
);
4616 end
= (relocation
+ rel
->r_addend
4617 - (sec
->output_section
->vma
+ sec
->output_offset
));
4618 r
= sh_elf_reloc_loop (r_type
, input_bfd
, input_section
, contents
,
4619 rel
->r_offset
, sec
, start
, end
);
4623 case R_SH_TLS_GD_32
:
4624 case R_SH_TLS_IE_32
:
4626 check_segment
[0] = check_segment
[1] = -1;
4627 r_type
= sh_elf_optimized_tls_reloc (info
, r_type
, h
== NULL
);
4628 got_type
= GOT_UNKNOWN
;
4629 if (h
== NULL
&& local_got_offsets
)
4630 got_type
= sh_elf_local_got_type (input_bfd
) [r_symndx
];
4633 got_type
= sh_elf_hash_entry (h
)->got_type
;
4634 if (! bfd_link_pic (info
)
4635 && (h
->dynindx
== -1
4637 r_type
= R_SH_TLS_LE_32
;
4640 if (r_type
== R_SH_TLS_GD_32
&& got_type
== GOT_TLS_IE
)
4641 r_type
= R_SH_TLS_IE_32
;
4643 if (r_type
== R_SH_TLS_LE_32
)
4646 unsigned short insn
;
4648 if (ELF32_R_TYPE (rel
->r_info
) == R_SH_TLS_GD_32
)
4650 /* GD->LE transition:
4651 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4652 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4653 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4655 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4657 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4659 offset
= rel
->r_offset
;
4663 /* xgettext:c-format */
4664 (_("%pB(%pA): offset in relocation for GD->LE translation is too small: %#" PRIx64
),
4665 input_bfd
, input_section
, (uint64_t) offset
);
4669 /* Size of GD instructions is 16 or 18. */
4671 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4672 if ((insn
& 0xff00) == 0xc700)
4674 BFD_ASSERT (offset
>= 2);
4676 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4679 if ((insn
& 0xff00) != 0xd400)
4681 /* xgettext:c-format */ /* The backslash is to prevent bogus trigraph detection. */
4682 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0xd4?\?)"),
4683 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4685 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 2);
4687 if ((insn
& 0xff00) != 0xc700)
4689 /* xgettext:c-format */
4690 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0xc7?\?)"),
4691 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4693 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 4);
4694 if ((insn
& 0xff00) != 0xd100)
4696 /* xgettext:c-format */
4697 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0xd1?\?)"),
4698 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4700 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 6);
4703 /* xgettext:c-format */
4704 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x310c)"),
4705 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4707 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 8);
4710 /* xgettext:c-format */
4711 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x410b)"),
4712 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4714 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 10);
4717 /* xgettext:c-format */
4718 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x34cc)"),
4719 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4721 bfd_put_16 (output_bfd
, 0x0012, contents
+ offset
+ 2);
4722 bfd_put_16 (output_bfd
, 0x304c, contents
+ offset
+ 4);
4723 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 6);
4724 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 8);
4725 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 10);
4731 /* IE->LE transition:
4748 offset
= rel
->r_offset
;
4752 /* xgettext:c-format */
4753 (_("%pB(%pA): offset in relocation for IE->LE translation is too small: %#" PRIx64
),
4754 input_bfd
, input_section
, (uint64_t) offset
);
4758 /* Size of IE instructions is 10 or 12. */
4760 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4761 if ((insn
& 0xf0ff) == 0x0012)
4763 BFD_ASSERT (offset
>= 2);
4765 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4768 if ((insn
& 0xff00) != 0xd000)
4770 /* xgettext:c-format */
4771 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0xd0??: mov.l)"),
4772 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4774 target
= insn
& 0x00ff;
4776 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 2);
4777 if ((insn
& 0xf0ff) != 0x0012)
4779 /* xgettext:c-format */
4780 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x0?12: stc)"),
4781 input_bfd
, input_section
, (uint64_t) (offset
+ 2), (int) insn
);
4783 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 4);
4784 if ((insn
& 0xf0ff) != 0x00ce)
4786 /* xgettext:c-format */
4787 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x0?ce: mov.l)"),
4788 input_bfd
, input_section
, (uint64_t) (offset
+ 4), (int) insn
);
4790 insn
= 0xd000 | (insn
& 0x0f00) | target
;
4791 bfd_put_16 (output_bfd
, insn
, contents
+ offset
+ 0);
4792 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 4);
4795 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
4796 contents
+ rel
->r_offset
);
4800 if (sgot
== NULL
|| sgotplt
== NULL
)
4804 off
= h
->got
.offset
;
4807 if (local_got_offsets
== NULL
)
4810 off
= local_got_offsets
[r_symndx
];
4813 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4814 if (r_type
== R_SH_TLS_IE_32
4815 && ! htab
->root
.dynamic_sections_created
)
4818 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
4819 sgot
->contents
+ off
);
4820 bfd_put_32 (output_bfd
, sh_elf_got_offset (htab
) + off
,
4821 contents
+ rel
->r_offset
);
4829 Elf_Internal_Rela outrel
;
4833 outrel
.r_offset
= (sgot
->output_section
->vma
4834 + sgot
->output_offset
+ off
);
4836 if (h
== NULL
|| h
->dynindx
== -1)
4841 dr_type
= (r_type
== R_SH_TLS_GD_32
? R_SH_TLS_DTPMOD32
:
4843 if (dr_type
== R_SH_TLS_TPOFF32
&& indx
== 0)
4844 outrel
.r_addend
= relocation
- dtpoff_base (info
);
4846 outrel
.r_addend
= 0;
4847 outrel
.r_info
= ELF32_R_INFO (indx
, dr_type
);
4848 loc
= srelgot
->contents
;
4849 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4850 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4852 if (r_type
== R_SH_TLS_GD_32
)
4856 bfd_put_32 (output_bfd
,
4857 relocation
- dtpoff_base (info
),
4858 sgot
->contents
+ off
+ 4);
4862 outrel
.r_info
= ELF32_R_INFO (indx
,
4864 outrel
.r_offset
+= 4;
4865 outrel
.r_addend
= 0;
4866 srelgot
->reloc_count
++;
4867 loc
+= sizeof (Elf32_External_Rela
);
4868 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4875 local_got_offsets
[r_symndx
] |= 1;
4878 if (off
>= (bfd_vma
) -2)
4881 if (r_type
== (int) ELF32_R_TYPE (rel
->r_info
))
4882 relocation
= sh_elf_got_offset (htab
) + off
;
4886 unsigned short insn
;
4888 /* GD->IE transition:
4889 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4890 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4891 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4893 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4894 nop; nop; bra 3f; nop; .align 2;
4895 1: .long x@TPOFF; 2:...; 3:. */
4897 offset
= rel
->r_offset
;
4901 /* xgettext:c-format */
4902 (_("%pB(%pA): offset in relocation for GD->IE translation is too small: %#" PRIx64
),
4903 input_bfd
, input_section
, (uint64_t) offset
);
4907 /* Size of GD instructions is 16 or 18. */
4909 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4910 if ((insn
& 0xff00) == 0xc700)
4912 BFD_ASSERT (offset
>= 2);
4914 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4917 BFD_ASSERT ((insn
& 0xff00) == 0xd400);
4919 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4920 bfd_put_16 (output_bfd
, insn
& 0xf0ff, contents
+ offset
);
4922 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 2);
4923 BFD_ASSERT ((insn
& 0xff00) == 0xc700);
4924 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 4);
4925 BFD_ASSERT ((insn
& 0xff00) == 0xd100);
4926 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 6);
4927 BFD_ASSERT (insn
== 0x310c);
4928 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 8);
4929 BFD_ASSERT (insn
== 0x410b);
4930 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 10);
4931 BFD_ASSERT (insn
== 0x34cc);
4933 bfd_put_16 (output_bfd
, 0x0412, contents
+ offset
+ 2);
4934 bfd_put_16 (output_bfd
, 0x00ce, contents
+ offset
+ 4);
4935 bfd_put_16 (output_bfd
, 0x304c, contents
+ offset
+ 6);
4936 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 8);
4937 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 10);
4939 bfd_put_32 (output_bfd
, sh_elf_got_offset (htab
) + off
,
4940 contents
+ rel
->r_offset
);
4945 addend
= rel
->r_addend
;
4947 goto final_link_relocate
;
4949 case R_SH_TLS_LD_32
:
4951 check_segment
[0] = check_segment
[1] = -1;
4952 if (! bfd_link_pic (info
))
4955 unsigned short insn
;
4957 /* LD->LE transition:
4958 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4959 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4960 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4962 stc gbr,r0; nop; nop; nop;
4963 nop; nop; bra 3f; ...; 3:. */
4965 offset
= rel
->r_offset
;
4969 /* xgettext:c-format */
4970 (_("%pB(%pA): offset in relocation for LD->LE translation is too small: %#" PRIx64
),
4971 input_bfd
, input_section
, (uint64_t) offset
);
4975 /* Size of LD instructions is 16 or 18. */
4977 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4978 if ((insn
& 0xff00) == 0xc700)
4980 BFD_ASSERT (offset
>= 2);
4982 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4985 BFD_ASSERT ((insn
& 0xff00) == 0xd400);
4986 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 2);
4987 BFD_ASSERT ((insn
& 0xff00) == 0xc700);
4988 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 4);
4989 BFD_ASSERT ((insn
& 0xff00) == 0xd100);
4990 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 6);
4991 BFD_ASSERT (insn
== 0x310c);
4992 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 8);
4993 BFD_ASSERT (insn
== 0x410b);
4994 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 10);
4995 BFD_ASSERT (insn
== 0x34cc);
4997 bfd_put_16 (output_bfd
, 0x0012, contents
+ offset
+ 0);
4998 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 2);
4999 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 4);
5000 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 6);
5001 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 8);
5002 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 10);
5007 if (sgot
== NULL
|| sgotplt
== NULL
)
5010 off
= htab
->tls_ldm_got
.offset
;
5015 Elf_Internal_Rela outrel
;
5018 outrel
.r_offset
= (sgot
->output_section
->vma
5019 + sgot
->output_offset
+ off
);
5020 outrel
.r_addend
= 0;
5021 outrel
.r_info
= ELF32_R_INFO (0, R_SH_TLS_DTPMOD32
);
5022 loc
= srelgot
->contents
;
5023 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
5024 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
5025 htab
->tls_ldm_got
.offset
|= 1;
5028 relocation
= sh_elf_got_offset (htab
) + off
;
5029 addend
= rel
->r_addend
;
5031 goto final_link_relocate
;
5033 case R_SH_TLS_LDO_32
:
5034 check_segment
[0] = check_segment
[1] = -1;
5035 if (! bfd_link_pic (info
))
5036 relocation
= tpoff (info
, relocation
);
5038 relocation
-= dtpoff_base (info
);
5040 addend
= rel
->r_addend
;
5041 goto final_link_relocate
;
5043 case R_SH_TLS_LE_32
:
5046 Elf_Internal_Rela outrel
;
5049 check_segment
[0] = check_segment
[1] = -1;
5051 if (!bfd_link_dll (info
))
5053 relocation
= tpoff (info
, relocation
);
5054 addend
= rel
->r_addend
;
5055 goto final_link_relocate
;
5060 sreloc
= _bfd_elf_get_dynamic_reloc_section
5061 (input_bfd
, input_section
, /*rela?*/ TRUE
);
5066 if (h
== NULL
|| h
->dynindx
== -1)
5071 outrel
.r_offset
= (input_section
->output_section
->vma
5072 + input_section
->output_offset
5074 outrel
.r_info
= ELF32_R_INFO (indx
, R_SH_TLS_TPOFF32
);
5076 outrel
.r_addend
= relocation
- dtpoff_base (info
);
5078 outrel
.r_addend
= 0;
5080 loc
= sreloc
->contents
;
5081 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
5082 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
5088 if (fdpic_p
&& check_segment
[0] != (unsigned) -1
5089 && check_segment
[0] != check_segment
[1])
5091 /* We don't want duplicate errors for undefined symbols. */
5092 if (!h
|| h
->root
.type
!= bfd_link_hash_undefined
)
5094 if (bfd_link_pic (info
))
5096 info
->callbacks
->einfo
5097 /* xgettext:c-format */
5098 (_("%X%C: relocation to \"%s\" references a different segment\n"),
5099 input_bfd
, input_section
, rel
->r_offset
, symname
);
5103 info
->callbacks
->einfo
5104 /* xgettext:c-format */
5105 (_("%C: warning: relocation to \"%s\" references a different segment\n"),
5106 input_bfd
, input_section
, rel
->r_offset
, symname
);
5109 elf_elfheader (output_bfd
)->e_flags
|= EF_SH_PIC
;
5112 if (r
!= bfd_reloc_ok
)
5117 case bfd_reloc_outofrange
:
5119 case bfd_reloc_overflow
:
5127 name
= (bfd_elf_string_from_elf_section
5128 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
5132 name
= bfd_section_name (sec
);
5134 (*info
->callbacks
->reloc_overflow
)
5135 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
5136 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
5146 /* This is a version of bfd_generic_get_relocated_section_contents
5147 which uses sh_elf_relocate_section. */
5150 sh_elf_get_relocated_section_contents (bfd
*output_bfd
,
5151 struct bfd_link_info
*link_info
,
5152 struct bfd_link_order
*link_order
,
5154 bfd_boolean relocatable
,
5157 Elf_Internal_Shdr
*symtab_hdr
;
5158 asection
*input_section
= link_order
->u
.indirect
.section
;
5159 bfd
*input_bfd
= input_section
->owner
;
5160 asection
**sections
= NULL
;
5161 Elf_Internal_Rela
*internal_relocs
= NULL
;
5162 Elf_Internal_Sym
*isymbuf
= NULL
;
5164 /* We only need to handle the case of relaxing, or of having a
5165 particular set of section contents, specially. */
5167 || elf_section_data (input_section
)->this_hdr
.contents
== NULL
)
5168 return bfd_generic_get_relocated_section_contents (output_bfd
, link_info
,
5173 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
5175 memcpy (data
, elf_section_data (input_section
)->this_hdr
.contents
,
5176 (size_t) input_section
->size
);
5178 if ((input_section
->flags
& SEC_RELOC
) != 0
5179 && input_section
->reloc_count
> 0)
5182 Elf_Internal_Sym
*isym
, *isymend
;
5185 internal_relocs
= (_bfd_elf_link_read_relocs
5186 (input_bfd
, input_section
, NULL
,
5187 (Elf_Internal_Rela
*) NULL
, FALSE
));
5188 if (internal_relocs
== NULL
)
5191 if (symtab_hdr
->sh_info
!= 0)
5193 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5194 if (isymbuf
== NULL
)
5195 isymbuf
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
5196 symtab_hdr
->sh_info
, 0,
5198 if (isymbuf
== NULL
)
5202 amt
= symtab_hdr
->sh_info
;
5203 amt
*= sizeof (asection
*);
5204 sections
= (asection
**) bfd_malloc (amt
);
5205 if (sections
== NULL
&& amt
!= 0)
5208 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
5209 for (isym
= isymbuf
, secpp
= sections
; isym
< isymend
; ++isym
, ++secpp
)
5213 if (isym
->st_shndx
== SHN_UNDEF
)
5214 isec
= bfd_und_section_ptr
;
5215 else if (isym
->st_shndx
== SHN_ABS
)
5216 isec
= bfd_abs_section_ptr
;
5217 else if (isym
->st_shndx
== SHN_COMMON
)
5218 isec
= bfd_com_section_ptr
;
5220 isec
= bfd_section_from_elf_index (input_bfd
, isym
->st_shndx
);
5225 if (! sh_elf_relocate_section (output_bfd
, link_info
, input_bfd
,
5226 input_section
, data
, internal_relocs
,
5231 if (symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5233 if (elf_section_data (input_section
)->relocs
!= internal_relocs
)
5234 free (internal_relocs
);
5241 if (symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5243 if (elf_section_data (input_section
)->relocs
!= internal_relocs
)
5244 free (internal_relocs
);
5248 /* Return the base VMA address which should be subtracted from real addresses
5249 when resolving @dtpoff relocation.
5250 This is PT_TLS segment p_vaddr. */
5253 dtpoff_base (struct bfd_link_info
*info
)
5255 /* If tls_sec is NULL, we should have signalled an error already. */
5256 if (elf_hash_table (info
)->tls_sec
== NULL
)
5258 return elf_hash_table (info
)->tls_sec
->vma
;
5261 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
5264 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
5266 /* If tls_sec is NULL, we should have signalled an error already. */
5267 if (elf_hash_table (info
)->tls_sec
== NULL
)
5269 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
5270 structure which has 2 pointer fields. */
5271 return (address
- elf_hash_table (info
)->tls_sec
->vma
5272 + align_power ((bfd_vma
) 8,
5273 elf_hash_table (info
)->tls_sec
->alignment_power
));
5277 sh_elf_gc_mark_hook (asection
*sec
,
5278 struct bfd_link_info
*info
,
5279 Elf_Internal_Rela
*rel
,
5280 struct elf_link_hash_entry
*h
,
5281 Elf_Internal_Sym
*sym
)
5284 switch (ELF32_R_TYPE (rel
->r_info
))
5286 case R_SH_GNU_VTINHERIT
:
5287 case R_SH_GNU_VTENTRY
:
5291 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5294 /* Copy the extra info we tack onto an elf_link_hash_entry. */
5297 sh_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
5298 struct elf_link_hash_entry
*dir
,
5299 struct elf_link_hash_entry
*ind
)
5301 struct elf_sh_link_hash_entry
*edir
, *eind
;
5303 edir
= (struct elf_sh_link_hash_entry
*) dir
;
5304 eind
= (struct elf_sh_link_hash_entry
*) ind
;
5306 if (ind
->dyn_relocs
!= NULL
)
5308 if (dir
->dyn_relocs
!= NULL
)
5310 struct elf_dyn_relocs
**pp
;
5311 struct elf_dyn_relocs
*p
;
5313 /* Add reloc counts against the indirect sym to the direct sym
5314 list. Merge any entries against the same section. */
5315 for (pp
= &ind
->dyn_relocs
; (p
= *pp
) != NULL
; )
5317 struct elf_dyn_relocs
*q
;
5319 for (q
= dir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
5320 if (q
->sec
== p
->sec
)
5322 q
->pc_count
+= p
->pc_count
;
5323 q
->count
+= p
->count
;
5330 *pp
= dir
->dyn_relocs
;
5333 dir
->dyn_relocs
= ind
->dyn_relocs
;
5334 ind
->dyn_relocs
= NULL
;
5336 edir
->gotplt_refcount
= eind
->gotplt_refcount
;
5337 eind
->gotplt_refcount
= 0;
5338 edir
->funcdesc
.refcount
+= eind
->funcdesc
.refcount
;
5339 eind
->funcdesc
.refcount
= 0;
5340 edir
->abs_funcdesc_refcount
+= eind
->abs_funcdesc_refcount
;
5341 eind
->abs_funcdesc_refcount
= 0;
5343 if (ind
->root
.type
== bfd_link_hash_indirect
5344 && dir
->got
.refcount
<= 0)
5346 edir
->got_type
= eind
->got_type
;
5347 eind
->got_type
= GOT_UNKNOWN
;
5350 if (ind
->root
.type
!= bfd_link_hash_indirect
5351 && dir
->dynamic_adjusted
)
5353 /* If called to transfer flags for a weakdef during processing
5354 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
5355 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
5356 if (dir
->versioned
!= versioned_hidden
)
5357 dir
->ref_dynamic
|= ind
->ref_dynamic
;
5358 dir
->ref_regular
|= ind
->ref_regular
;
5359 dir
->ref_regular_nonweak
|= ind
->ref_regular_nonweak
;
5360 dir
->needs_plt
|= ind
->needs_plt
;
5363 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
5367 sh_elf_optimized_tls_reloc (struct bfd_link_info
*info
, int r_type
,
5370 if (bfd_link_pic (info
))
5375 case R_SH_TLS_GD_32
:
5376 case R_SH_TLS_IE_32
:
5378 return R_SH_TLS_LE_32
;
5379 return R_SH_TLS_IE_32
;
5380 case R_SH_TLS_LD_32
:
5381 return R_SH_TLS_LE_32
;
5387 /* Look through the relocs for a section during the first phase.
5388 Since we don't do .gots or .plts, we just need to consider the
5389 virtual table relocs for gc. */
5392 sh_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
, asection
*sec
,
5393 const Elf_Internal_Rela
*relocs
)
5395 Elf_Internal_Shdr
*symtab_hdr
;
5396 struct elf_link_hash_entry
**sym_hashes
;
5397 struct elf_sh_link_hash_table
*htab
;
5398 const Elf_Internal_Rela
*rel
;
5399 const Elf_Internal_Rela
*rel_end
;
5401 unsigned int r_type
;
5402 enum got_type got_type
, old_got_type
;
5406 if (bfd_link_relocatable (info
))
5409 /* Don't do anything special with non-loaded, non-alloced sections.
5410 In particular, any relocs in such sections should not affect GOT
5411 and PLT reference counting (ie. we don't allow them to create GOT
5412 or PLT entries), there's no possibility or desire to optimize TLS
5413 relocs, and there's not much point in propagating relocs to shared
5414 libs that the dynamic linker won't relocate. */
5415 if ((sec
->flags
& SEC_ALLOC
) == 0)
5418 BFD_ASSERT (is_sh_elf (abfd
));
5420 symtab_hdr
= &elf_symtab_hdr (abfd
);
5421 sym_hashes
= elf_sym_hashes (abfd
);
5423 htab
= sh_elf_hash_table (info
);
5427 rel_end
= relocs
+ sec
->reloc_count
;
5428 for (rel
= relocs
; rel
< rel_end
; rel
++)
5430 struct elf_link_hash_entry
*h
;
5431 unsigned long r_symndx
;
5433 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5434 r_type
= ELF32_R_TYPE (rel
->r_info
);
5436 if (r_symndx
< symtab_hdr
->sh_info
)
5440 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5441 while (h
->root
.type
== bfd_link_hash_indirect
5442 || h
->root
.type
== bfd_link_hash_warning
)
5443 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5446 r_type
= sh_elf_optimized_tls_reloc (info
, r_type
, h
== NULL
);
5447 if (! bfd_link_pic (info
)
5448 && r_type
== R_SH_TLS_IE_32
5450 && h
->root
.type
!= bfd_link_hash_undefined
5451 && h
->root
.type
!= bfd_link_hash_undefweak
5452 && (h
->dynindx
== -1
5454 r_type
= R_SH_TLS_LE_32
;
5459 case R_SH_GOTOFFFUNCDESC
:
5460 case R_SH_GOTOFFFUNCDESC20
:
5462 case R_SH_GOTFUNCDESC
:
5463 case R_SH_GOTFUNCDESC20
:
5466 if (h
->dynindx
== -1)
5467 switch (ELF_ST_VISIBILITY (h
->other
))
5473 bfd_elf_link_record_dynamic_symbol (info
, h
);
5480 /* Some relocs require a global offset table. */
5481 if (htab
->root
.sgot
== NULL
)
5486 /* This may require an rofixup. */
5496 case R_SH_GOTFUNCDESC
:
5497 case R_SH_GOTFUNCDESC20
:
5498 case R_SH_GOTOFFFUNCDESC
:
5499 case R_SH_GOTOFFFUNCDESC20
:
5501 case R_SH_TLS_GD_32
:
5502 case R_SH_TLS_LD_32
:
5503 case R_SH_TLS_IE_32
:
5504 if (htab
->root
.dynobj
== NULL
)
5505 htab
->root
.dynobj
= abfd
;
5506 if (!create_got_section (htab
->root
.dynobj
, info
))
5517 /* This relocation describes the C++ object vtable hierarchy.
5518 Reconstruct it for later use during GC. */
5519 case R_SH_GNU_VTINHERIT
:
5520 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5524 /* This relocation describes which C++ vtable entries are actually
5525 used. Record for later use during GC. */
5526 case R_SH_GNU_VTENTRY
:
5527 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5531 case R_SH_TLS_IE_32
:
5532 if (bfd_link_pic (info
))
5533 info
->flags
|= DF_STATIC_TLS
;
5537 case R_SH_TLS_GD_32
:
5540 case R_SH_GOTFUNCDESC
:
5541 case R_SH_GOTFUNCDESC20
:
5545 got_type
= GOT_NORMAL
;
5547 case R_SH_TLS_GD_32
:
5548 got_type
= GOT_TLS_GD
;
5550 case R_SH_TLS_IE_32
:
5551 got_type
= GOT_TLS_IE
;
5553 case R_SH_GOTFUNCDESC
:
5554 case R_SH_GOTFUNCDESC20
:
5555 got_type
= GOT_FUNCDESC
;
5561 h
->got
.refcount
+= 1;
5562 old_got_type
= sh_elf_hash_entry (h
)->got_type
;
5566 bfd_signed_vma
*local_got_refcounts
;
5568 /* This is a global offset table entry for a local
5570 local_got_refcounts
= elf_local_got_refcounts (abfd
);
5571 if (local_got_refcounts
== NULL
)
5575 size
= symtab_hdr
->sh_info
;
5576 size
*= sizeof (bfd_signed_vma
);
5577 size
+= symtab_hdr
->sh_info
;
5578 local_got_refcounts
= ((bfd_signed_vma
*)
5579 bfd_zalloc (abfd
, size
));
5580 if (local_got_refcounts
== NULL
)
5582 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
5583 sh_elf_local_got_type (abfd
)
5584 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
5586 local_got_refcounts
[r_symndx
] += 1;
5587 old_got_type
= sh_elf_local_got_type (abfd
) [r_symndx
];
5590 /* If a TLS symbol is accessed using IE at least once,
5591 there is no point to use dynamic model for it. */
5592 if (old_got_type
!= got_type
&& old_got_type
!= GOT_UNKNOWN
5593 && (old_got_type
!= GOT_TLS_GD
|| got_type
!= GOT_TLS_IE
))
5595 if (old_got_type
== GOT_TLS_IE
&& got_type
== GOT_TLS_GD
)
5596 got_type
= GOT_TLS_IE
;
5599 if ((old_got_type
== GOT_FUNCDESC
|| got_type
== GOT_FUNCDESC
)
5600 && (old_got_type
== GOT_NORMAL
|| got_type
== GOT_NORMAL
))
5602 /* xgettext:c-format */
5603 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5604 abfd
, h
->root
.root
.string
);
5605 else if (old_got_type
== GOT_FUNCDESC
5606 || got_type
== GOT_FUNCDESC
)
5608 /* xgettext:c-format */
5609 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5610 abfd
, h
->root
.root
.string
);
5613 /* xgettext:c-format */
5614 (_("%pB: `%s' accessed both as normal and thread local symbol"),
5615 abfd
, h
->root
.root
.string
);
5620 if (old_got_type
!= got_type
)
5623 sh_elf_hash_entry (h
)->got_type
= got_type
;
5625 sh_elf_local_got_type (abfd
) [r_symndx
] = got_type
;
5630 case R_SH_TLS_LD_32
:
5631 sh_elf_hash_table(info
)->tls_ldm_got
.refcount
+= 1;
5635 case R_SH_GOTOFFFUNCDESC
:
5636 case R_SH_GOTOFFFUNCDESC20
:
5640 (_("%pB: Function descriptor relocation with non-zero addend"),
5647 union gotref
*local_funcdesc
;
5649 /* We need a function descriptor for a local symbol. */
5650 local_funcdesc
= sh_elf_local_funcdesc (abfd
);
5651 if (local_funcdesc
== NULL
)
5655 size
= symtab_hdr
->sh_info
* sizeof (union gotref
);
5656 local_funcdesc
= (union gotref
*) bfd_zalloc (abfd
, size
);
5657 if (local_funcdesc
== NULL
)
5659 sh_elf_local_funcdesc (abfd
) = local_funcdesc
;
5661 local_funcdesc
[r_symndx
].refcount
+= 1;
5663 if (r_type
== R_SH_FUNCDESC
)
5665 if (!bfd_link_pic (info
))
5666 htab
->srofixup
->size
+= 4;
5668 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
5673 sh_elf_hash_entry (h
)->funcdesc
.refcount
++;
5674 if (r_type
== R_SH_FUNCDESC
)
5675 sh_elf_hash_entry (h
)->abs_funcdesc_refcount
++;
5677 /* If there is a function descriptor reference, then
5678 there should not be any non-FDPIC references. */
5679 old_got_type
= sh_elf_hash_entry (h
)->got_type
;
5680 if (old_got_type
!= GOT_FUNCDESC
&& old_got_type
!= GOT_UNKNOWN
)
5682 if (old_got_type
== GOT_NORMAL
)
5684 /* xgettext:c-format */
5685 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5686 abfd
, h
->root
.root
.string
);
5689 /* xgettext:c-format */
5690 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5691 abfd
, h
->root
.root
.string
);
5697 /* If this is a local symbol, we resolve it directly without
5698 creating a procedure linkage table entry. */
5702 || ! bfd_link_pic (info
)
5704 || h
->dynindx
== -1)
5708 h
->plt
.refcount
+= 1;
5709 ((struct elf_sh_link_hash_entry
*) h
)->gotplt_refcount
+= 1;
5714 /* This symbol requires a procedure linkage table entry. We
5715 actually build the entry in adjust_dynamic_symbol,
5716 because this might be a case of linking PIC code which is
5717 never referenced by a dynamic object, in which case we
5718 don't need to generate a procedure linkage table entry
5721 /* If this is a local symbol, we resolve it directly without
5722 creating a procedure linkage table entry. */
5726 if (h
->forced_local
)
5730 h
->plt
.refcount
+= 1;
5735 if (h
!= NULL
&& ! bfd_link_pic (info
))
5738 h
->plt
.refcount
+= 1;
5741 /* If we are creating a shared library, and this is a reloc
5742 against a global symbol, or a non PC relative reloc
5743 against a local symbol, then we need to copy the reloc
5744 into the shared library. However, if we are linking with
5745 -Bsymbolic, we do not need to copy a reloc against a
5746 global symbol which is defined in an object we are
5747 including in the link (i.e., DEF_REGULAR is set). At
5748 this point we have not seen all the input files, so it is
5749 possible that DEF_REGULAR is not set now but will be set
5750 later (it is never cleared). We account for that
5751 possibility below by storing information in the
5752 dyn_relocs field of the hash table entry. A similar
5753 situation occurs when creating shared libraries and symbol
5754 visibility changes render the symbol local.
5756 If on the other hand, we are creating an executable, we
5757 may need to keep relocations for symbols satisfied by a
5758 dynamic library if we manage to avoid copy relocs for the
5760 if ((bfd_link_pic (info
)
5761 && (sec
->flags
& SEC_ALLOC
) != 0
5762 && (r_type
!= R_SH_REL32
5764 && (! info
->symbolic
5765 || h
->root
.type
== bfd_link_hash_defweak
5766 || !h
->def_regular
))))
5767 || (! bfd_link_pic (info
)
5768 && (sec
->flags
& SEC_ALLOC
) != 0
5770 && (h
->root
.type
== bfd_link_hash_defweak
5771 || !h
->def_regular
)))
5773 struct elf_dyn_relocs
*p
;
5774 struct elf_dyn_relocs
**head
;
5776 if (htab
->root
.dynobj
== NULL
)
5777 htab
->root
.dynobj
= abfd
;
5779 /* When creating a shared object, we must copy these
5780 reloc types into the output file. We create a reloc
5781 section in dynobj and make room for this reloc. */
5784 sreloc
= _bfd_elf_make_dynamic_reloc_section
5785 (sec
, htab
->root
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
5791 /* If this is a global symbol, we count the number of
5792 relocations we need for this symbol. */
5794 head
= &h
->dyn_relocs
;
5797 /* Track dynamic relocs needed for local syms too. */
5800 Elf_Internal_Sym
*isym
;
5802 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5807 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5811 vpp
= &elf_section_data (s
)->local_dynrel
;
5812 head
= (struct elf_dyn_relocs
**) vpp
;
5816 if (p
== NULL
|| p
->sec
!= sec
)
5818 size_t amt
= sizeof (*p
);
5819 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
5830 if (r_type
== R_SH_REL32
)
5834 /* Allocate the fixup regardless of whether we need a relocation.
5835 If we end up generating the relocation, we'll unallocate the
5837 if (htab
->fdpic_p
&& !bfd_link_pic (info
)
5838 && r_type
== R_SH_DIR32
5839 && (sec
->flags
& SEC_ALLOC
) != 0)
5840 htab
->srofixup
->size
+= 4;
5843 case R_SH_TLS_LE_32
:
5844 if (bfd_link_dll (info
))
5847 (_("%pB: TLS local exec code cannot be linked into shared objects"),
5854 case R_SH_TLS_LDO_32
:
5855 /* Nothing to do. */
5866 #ifndef sh_elf_set_mach_from_flags
5867 static unsigned int sh_ef_bfd_table
[] = { EF_SH_BFD_TABLE
};
5870 sh_elf_set_mach_from_flags (bfd
*abfd
)
5872 flagword flags
= elf_elfheader (abfd
)->e_flags
& EF_SH_MACH_MASK
;
5874 if (flags
>= ARRAY_SIZE (sh_ef_bfd_table
))
5877 if (sh_ef_bfd_table
[flags
] == 0)
5880 bfd_default_set_arch_mach (abfd
, bfd_arch_sh
, sh_ef_bfd_table
[flags
]);
5886 /* Reverse table lookup for sh_ef_bfd_table[].
5887 Given a bfd MACH value from archures.c
5888 return the equivalent ELF flags from the table.
5889 Return -1 if no match is found. */
5892 sh_elf_get_flags_from_mach (unsigned long mach
)
5894 int i
= ARRAY_SIZE (sh_ef_bfd_table
) - 1;
5897 if (sh_ef_bfd_table
[i
] == mach
)
5900 /* shouldn't get here */
5905 #endif /* not sh_elf_set_mach_from_flags */
5907 #ifndef sh_elf_copy_private_data
5908 /* Copy backend specific data from one object module to another */
5911 sh_elf_copy_private_data (bfd
* ibfd
, bfd
* obfd
)
5913 if (! is_sh_elf (ibfd
) || ! is_sh_elf (obfd
))
5916 if (! _bfd_elf_copy_private_bfd_data (ibfd
, obfd
))
5919 return sh_elf_set_mach_from_flags (obfd
);
5921 #endif /* not sh_elf_copy_private_data */
5923 #ifndef sh_elf_merge_private_data
5925 /* This function returns the ELF architecture number that
5926 corresponds to the given arch_sh* flags. */
5929 sh_find_elf_flags (unsigned int arch_set
)
5931 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5932 unsigned long bfd_mach
= sh_get_bfd_mach_from_arch_set (arch_set
);
5934 return sh_elf_get_flags_from_mach (bfd_mach
);
5937 /* Merge the architecture type of two BFD files, such that the
5938 resultant architecture supports all the features required
5939 by the two input BFDs.
5940 If the input BFDs are multually incompatible - i.e. one uses
5941 DSP while the other uses FPU - or there is no known architecture
5942 that fits the requirements then an error is emitted. */
5945 sh_merge_bfd_arch (bfd
*ibfd
, struct bfd_link_info
*info
)
5947 bfd
*obfd
= info
->output_bfd
;
5948 unsigned int old_arch
, new_arch
, merged_arch
;
5950 if (! _bfd_generic_verify_endian_match (ibfd
, info
))
5953 old_arch
= sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd
));
5954 new_arch
= sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd
));
5956 merged_arch
= SH_MERGE_ARCH_SET (old_arch
, new_arch
);
5958 if (!SH_VALID_CO_ARCH_SET (merged_arch
))
5961 /* xgettext:c-format */
5962 (_("%pB: uses %s instructions while previous modules "
5963 "use %s instructions"),
5965 SH_ARCH_SET_HAS_DSP (new_arch
) ? "dsp" : "floating point",
5966 SH_ARCH_SET_HAS_DSP (new_arch
) ? "floating point" : "dsp");
5967 bfd_set_error (bfd_error_bad_value
);
5970 else if (!SH_VALID_ARCH_SET (merged_arch
))
5973 /* xgettext:c-format */
5974 (_("internal error: merge of architecture '%s' with "
5975 "architecture '%s' produced unknown architecture"),
5976 bfd_printable_name (obfd
),
5977 bfd_printable_name (ibfd
));
5978 bfd_set_error (bfd_error_bad_value
);
5982 bfd_default_set_arch_mach (obfd
, bfd_arch_sh
,
5983 sh_get_bfd_mach_from_arch_set (merged_arch
));
5988 /* This routine initialises the elf flags when required and
5989 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
5992 sh_elf_merge_private_data (bfd
*ibfd
, struct bfd_link_info
*info
)
5994 bfd
*obfd
= info
->output_bfd
;
5996 /* FIXME: What should be checked when linking shared libraries? */
5997 if ((ibfd
->flags
& DYNAMIC
) != 0)
6000 if (! is_sh_elf (ibfd
) || ! is_sh_elf (obfd
))
6003 if (! elf_flags_init (obfd
))
6005 /* This happens when ld starts out with a 'blank' output file. */
6006 elf_flags_init (obfd
) = TRUE
;
6007 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
6008 sh_elf_set_mach_from_flags (obfd
);
6009 if (elf_elfheader (obfd
)->e_flags
& EF_SH_FDPIC
)
6010 elf_elfheader (obfd
)->e_flags
&= ~EF_SH_PIC
;
6013 if (! sh_merge_bfd_arch (ibfd
, info
))
6015 _bfd_error_handler (_("%pB: uses instructions which are incompatible "
6016 "with instructions used in previous modules"),
6018 bfd_set_error (bfd_error_bad_value
);
6022 elf_elfheader (obfd
)->e_flags
&= ~EF_SH_MACH_MASK
;
6023 elf_elfheader (obfd
)->e_flags
|=
6024 sh_elf_get_flags_from_mach (bfd_get_mach (obfd
));
6026 if (fdpic_object_p (ibfd
) != fdpic_object_p (obfd
))
6028 _bfd_error_handler (_("%pB: attempt to mix FDPIC and non-FDPIC objects"),
6030 bfd_set_error (bfd_error_bad_value
);
6036 #endif /* not sh_elf_merge_private_data */
6038 /* Override the generic function because we need to store sh_elf_obj_tdata
6039 as the specific tdata. We set also the machine architecture from flags
6043 sh_elf_object_p (bfd
*abfd
)
6045 if (! sh_elf_set_mach_from_flags (abfd
))
6048 return (((elf_elfheader (abfd
)->e_flags
& EF_SH_FDPIC
) != 0)
6049 == fdpic_object_p (abfd
));
6052 /* Finish up dynamic symbol handling. We set the contents of various
6053 dynamic sections here. */
6056 sh_elf_finish_dynamic_symbol (bfd
*output_bfd
, struct bfd_link_info
*info
,
6057 struct elf_link_hash_entry
*h
,
6058 Elf_Internal_Sym
*sym
)
6060 struct elf_sh_link_hash_table
*htab
;
6062 htab
= sh_elf_hash_table (info
);
6066 if (h
->plt
.offset
!= (bfd_vma
) -1)
6074 Elf_Internal_Rela rel
;
6076 const struct elf_sh_plt_info
*plt_info
;
6078 /* This symbol has an entry in the procedure linkage table. Set
6081 BFD_ASSERT (h
->dynindx
!= -1);
6083 splt
= htab
->root
.splt
;
6084 sgotplt
= htab
->root
.sgotplt
;
6085 srelplt
= htab
->root
.srelplt
;
6086 BFD_ASSERT (splt
!= NULL
&& sgotplt
!= NULL
&& srelplt
!= NULL
);
6088 /* Get the index in the procedure linkage table which
6089 corresponds to this symbol. This is the index of this symbol
6090 in all the symbols for which we are making plt entries. The
6091 first entry in the procedure linkage table is reserved. */
6092 plt_index
= get_plt_index (htab
->plt_info
, h
->plt
.offset
);
6094 plt_info
= htab
->plt_info
;
6095 if (plt_info
->short_plt
!= NULL
&& plt_index
<= MAX_SHORT_PLT
)
6096 plt_info
= plt_info
->short_plt
;
6098 /* Get the offset into the .got table of the entry that
6099 corresponds to this function. */
6101 /* The offset must be relative to the GOT symbol, twelve bytes
6102 before the end of .got.plt. Each descriptor is eight
6104 got_offset
= plt_index
* 8 + 12 - sgotplt
->size
;
6106 /* Each .got entry is 4 bytes. The first three are
6108 got_offset
= (plt_index
+ 3) * 4;
6111 if (bfd_link_pic (info
))
6112 got_offset
-= GOT_BIAS
;
6115 /* Fill in the entry in the procedure linkage table. */
6116 memcpy (splt
->contents
+ h
->plt
.offset
,
6117 plt_info
->symbol_entry
,
6118 plt_info
->symbol_entry_size
);
6120 if (bfd_link_pic (info
) || htab
->fdpic_p
)
6122 if (plt_info
->symbol_fields
.got20
)
6124 bfd_reloc_status_type r
;
6125 r
= install_movi20_field (output_bfd
, got_offset
,
6126 splt
->owner
, splt
, splt
->contents
,
6128 + plt_info
->symbol_fields
.got_entry
);
6129 BFD_ASSERT (r
== bfd_reloc_ok
);
6132 install_plt_field (output_bfd
, FALSE
, got_offset
,
6135 + plt_info
->symbol_fields
.got_entry
));
6139 BFD_ASSERT (!plt_info
->symbol_fields
.got20
);
6141 install_plt_field (output_bfd
, FALSE
,
6142 (sgotplt
->output_section
->vma
6143 + sgotplt
->output_offset
6147 + plt_info
->symbol_fields
.got_entry
));
6148 if (htab
->vxworks_p
)
6150 unsigned int reachable_plts
, plts_per_4k
;
6153 /* Divide the PLT into groups. The first group contains
6154 REACHABLE_PLTS entries and the other groups contain
6155 PLTS_PER_4K entries. Entries in the first group can
6156 branch directly to .plt; those in later groups branch
6157 to the last element of the previous group. */
6158 /* ??? It would be better to create multiple copies of
6159 the common resolver stub. */
6160 reachable_plts
= ((4096
6161 - plt_info
->plt0_entry_size
6162 - (plt_info
->symbol_fields
.plt
+ 4))
6163 / plt_info
->symbol_entry_size
) + 1;
6164 plts_per_4k
= (4096 / plt_info
->symbol_entry_size
);
6165 if (plt_index
< reachable_plts
)
6166 distance
= -(h
->plt
.offset
6167 + plt_info
->symbol_fields
.plt
);
6169 distance
= -(((plt_index
- reachable_plts
) % plts_per_4k
+ 1)
6170 * plt_info
->symbol_entry_size
);
6172 /* Install the 'bra' with this offset. */
6173 bfd_put_16 (output_bfd
,
6174 0xa000 | (0x0fff & ((distance
- 4) / 2)),
6177 + plt_info
->symbol_fields
.plt
));
6180 install_plt_field (output_bfd
, TRUE
,
6181 splt
->output_section
->vma
+ splt
->output_offset
,
6184 + plt_info
->symbol_fields
.plt
));
6187 /* Make got_offset relative to the start of .got.plt. */
6189 if (bfd_link_pic (info
))
6190 got_offset
+= GOT_BIAS
;
6193 got_offset
= plt_index
* 8;
6195 if (plt_info
->symbol_fields
.reloc_offset
!= MINUS_ONE
)
6196 install_plt_field (output_bfd
, FALSE
,
6197 plt_index
* sizeof (Elf32_External_Rela
),
6200 + plt_info
->symbol_fields
.reloc_offset
));
6202 /* Fill in the entry in the global offset table. */
6203 bfd_put_32 (output_bfd
,
6204 (splt
->output_section
->vma
6205 + splt
->output_offset
6207 + plt_info
->symbol_resolve_offset
),
6208 sgotplt
->contents
+ got_offset
);
6210 bfd_put_32 (output_bfd
,
6211 sh_elf_osec_to_segment (output_bfd
, splt
->output_section
),
6212 sgotplt
->contents
+ got_offset
+ 4);
6214 /* Fill in the entry in the .rela.plt section. */
6215 rel
.r_offset
= (sgotplt
->output_section
->vma
6216 + sgotplt
->output_offset
6219 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_FUNCDESC_VALUE
);
6221 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_JMP_SLOT
);
6224 rel
.r_addend
= GOT_BIAS
;
6226 loc
= srelplt
->contents
+ plt_index
* sizeof (Elf32_External_Rela
);
6227 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6229 if (htab
->vxworks_p
&& !bfd_link_pic (info
))
6231 /* Create the .rela.plt.unloaded relocations for this PLT entry.
6232 Begin by pointing LOC to the first such relocation. */
6233 loc
= (htab
->srelplt2
->contents
6234 + (plt_index
* 2 + 1) * sizeof (Elf32_External_Rela
));
6236 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
6237 for the PLT entry's pointer to the .got.plt entry. */
6238 rel
.r_offset
= (splt
->output_section
->vma
6239 + splt
->output_offset
6241 + plt_info
->symbol_fields
.got_entry
);
6242 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_SH_DIR32
);
6243 rel
.r_addend
= got_offset
;
6244 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6245 loc
+= sizeof (Elf32_External_Rela
);
6247 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
6248 the .got.plt entry, which initially points to .plt. */
6249 rel
.r_offset
= (sgotplt
->output_section
->vma
6250 + sgotplt
->output_offset
6252 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_SH_DIR32
);
6254 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
6257 if (!h
->def_regular
)
6259 /* Mark the symbol as undefined, rather than as defined in
6260 the .plt section. Leave the value alone. */
6261 sym
->st_shndx
= SHN_UNDEF
;
6265 if (h
->got
.offset
!= (bfd_vma
) -1
6266 && sh_elf_hash_entry (h
)->got_type
!= GOT_TLS_GD
6267 && sh_elf_hash_entry (h
)->got_type
!= GOT_TLS_IE
6268 && sh_elf_hash_entry (h
)->got_type
!= GOT_FUNCDESC
)
6272 Elf_Internal_Rela rel
;
6275 /* This symbol has an entry in the global offset table. Set it
6278 sgot
= htab
->root
.sgot
;
6279 srelgot
= htab
->root
.srelgot
;
6280 BFD_ASSERT (sgot
!= NULL
&& srelgot
!= NULL
);
6282 rel
.r_offset
= (sgot
->output_section
->vma
6283 + sgot
->output_offset
6284 + (h
->got
.offset
&~ (bfd_vma
) 1));
6286 /* If this is a static link, or it is a -Bsymbolic link and the
6287 symbol is defined locally or was forced to be local because
6288 of a version file, we just want to emit a RELATIVE reloc.
6289 The entry in the global offset table will already have been
6290 initialized in the relocate_section function. */
6291 if (bfd_link_pic (info
)
6292 && SYMBOL_REFERENCES_LOCAL (info
, h
))
6296 asection
*sec
= h
->root
.u
.def
.section
;
6298 = elf_section_data (sec
->output_section
)->dynindx
;
6300 rel
.r_info
= ELF32_R_INFO (dynindx
, R_SH_DIR32
);
6301 rel
.r_addend
= (h
->root
.u
.def
.value
6302 + h
->root
.u
.def
.section
->output_offset
);
6306 rel
.r_info
= ELF32_R_INFO (0, R_SH_RELATIVE
);
6307 rel
.r_addend
= (h
->root
.u
.def
.value
6308 + h
->root
.u
.def
.section
->output_section
->vma
6309 + h
->root
.u
.def
.section
->output_offset
);
6314 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
6315 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_GLOB_DAT
);
6319 loc
= srelgot
->contents
;
6320 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
6321 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6327 Elf_Internal_Rela rel
;
6330 /* This symbol needs a copy reloc. Set it up. */
6332 BFD_ASSERT (h
->dynindx
!= -1
6333 && (h
->root
.type
== bfd_link_hash_defined
6334 || h
->root
.type
== bfd_link_hash_defweak
));
6336 s
= bfd_get_linker_section (htab
->root
.dynobj
, ".rela.bss");
6337 BFD_ASSERT (s
!= NULL
);
6339 rel
.r_offset
= (h
->root
.u
.def
.value
6340 + h
->root
.u
.def
.section
->output_section
->vma
6341 + h
->root
.u
.def
.section
->output_offset
);
6342 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_COPY
);
6344 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
6345 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6348 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
6349 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
6351 if (h
== htab
->root
.hdynamic
6352 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
6353 sym
->st_shndx
= SHN_ABS
;
6358 /* Finish up the dynamic sections. */
6361 sh_elf_finish_dynamic_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
6363 struct elf_sh_link_hash_table
*htab
;
6367 htab
= sh_elf_hash_table (info
);
6371 sgotplt
= htab
->root
.sgotplt
;
6372 sdyn
= bfd_get_linker_section (htab
->root
.dynobj
, ".dynamic");
6374 if (htab
->root
.dynamic_sections_created
)
6377 Elf32_External_Dyn
*dyncon
, *dynconend
;
6379 BFD_ASSERT (sgotplt
!= NULL
&& sdyn
!= NULL
);
6381 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
6382 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
6383 for (; dyncon
< dynconend
; dyncon
++)
6385 Elf_Internal_Dyn dyn
;
6388 bfd_elf32_swap_dyn_in (htab
->root
.dynobj
, dyncon
, &dyn
);
6394 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
6395 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
6399 BFD_ASSERT (htab
->root
.hgot
!= NULL
);
6400 s
= htab
->root
.hgot
->root
.u
.def
.section
;
6401 dyn
.d_un
.d_ptr
= htab
->root
.hgot
->root
.u
.def
.value
6402 + s
->output_section
->vma
+ s
->output_offset
;
6403 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
6407 s
= htab
->root
.srelplt
->output_section
;
6408 BFD_ASSERT (s
!= NULL
);
6409 dyn
.d_un
.d_ptr
= s
->vma
;
6410 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
6414 s
= htab
->root
.srelplt
->output_section
;
6415 BFD_ASSERT (s
!= NULL
);
6416 dyn
.d_un
.d_val
= s
->size
;
6417 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
6422 /* Fill in the first entry in the procedure linkage table. */
6423 splt
= htab
->root
.splt
;
6424 if (splt
&& splt
->size
> 0 && htab
->plt_info
->plt0_entry
)
6428 memcpy (splt
->contents
,
6429 htab
->plt_info
->plt0_entry
,
6430 htab
->plt_info
->plt0_entry_size
);
6431 for (i
= 0; i
< ARRAY_SIZE (htab
->plt_info
->plt0_got_fields
); i
++)
6432 if (htab
->plt_info
->plt0_got_fields
[i
] != MINUS_ONE
)
6433 install_plt_field (output_bfd
, FALSE
,
6434 (sgotplt
->output_section
->vma
6435 + sgotplt
->output_offset
6438 + htab
->plt_info
->plt0_got_fields
[i
]));
6440 if (htab
->vxworks_p
)
6442 /* Finalize the .rela.plt.unloaded contents. */
6443 Elf_Internal_Rela rel
;
6446 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
6447 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
6448 loc
= htab
->srelplt2
->contents
;
6449 rel
.r_offset
= (splt
->output_section
->vma
6450 + splt
->output_offset
6451 + htab
->plt_info
->plt0_got_fields
[2]);
6452 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_SH_DIR32
);
6454 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6455 loc
+= sizeof (Elf32_External_Rela
);
6457 /* Fix up the remaining .rela.plt.unloaded relocations.
6458 They may have the wrong symbol index for _G_O_T_ or
6459 _P_L_T_ depending on the order in which symbols were
6461 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
6463 /* The PLT entry's pointer to the .got.plt slot. */
6464 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
6465 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
,
6467 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
6468 loc
+= sizeof (Elf32_External_Rela
);
6470 /* The .got.plt slot's pointer to .plt. */
6471 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
6472 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
,
6474 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
6475 loc
+= sizeof (Elf32_External_Rela
);
6479 /* UnixWare sets the entsize of .plt to 4, although that doesn't
6480 really seem like the right value. */
6481 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
6485 /* Fill in the first three entries in the global offset table. */
6486 if (sgotplt
&& sgotplt
->size
> 0 && !htab
->fdpic_p
)
6489 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgotplt
->contents
);
6491 bfd_put_32 (output_bfd
,
6492 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
6494 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgotplt
->contents
+ 4);
6495 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgotplt
->contents
+ 8);
6498 if (sgotplt
&& sgotplt
->size
> 0)
6499 elf_section_data (sgotplt
->output_section
)->this_hdr
.sh_entsize
= 4;
6501 /* At the very end of the .rofixup section is a pointer to the GOT. */
6502 if (htab
->fdpic_p
&& htab
->srofixup
!= NULL
)
6504 struct elf_link_hash_entry
*hgot
= htab
->root
.hgot
;
6505 bfd_vma got_value
= hgot
->root
.u
.def
.value
6506 + hgot
->root
.u
.def
.section
->output_section
->vma
6507 + hgot
->root
.u
.def
.section
->output_offset
;
6509 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
, got_value
);
6511 /* Make sure we allocated and generated the same number of fixups. */
6512 BFD_ASSERT (htab
->srofixup
->reloc_count
* 4 == htab
->srofixup
->size
);
6515 if (htab
->srelfuncdesc
)
6516 BFD_ASSERT (htab
->srelfuncdesc
->reloc_count
* sizeof (Elf32_External_Rela
)
6517 == htab
->srelfuncdesc
->size
);
6519 if (htab
->root
.srelgot
)
6520 BFD_ASSERT (htab
->root
.srelgot
->reloc_count
* sizeof (Elf32_External_Rela
)
6521 == htab
->root
.srelgot
->size
);
6526 static enum elf_reloc_type_class
6527 sh_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
6528 const asection
*rel_sec ATTRIBUTE_UNUSED
,
6529 const Elf_Internal_Rela
*rela
)
6531 switch ((int) ELF32_R_TYPE (rela
->r_info
))
6534 return reloc_class_relative
;
6536 return reloc_class_plt
;
6538 return reloc_class_copy
;
6540 return reloc_class_normal
;
6544 #if !defined SH_TARGET_ALREADY_DEFINED
6545 /* Support for Linux core dump NOTE sections. */
6548 elf32_shlin_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
6553 switch (note
->descsz
)
6558 case 168: /* Linux/SH */
6560 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
6563 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
6572 /* Make a ".reg/999" section. */
6573 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
6574 size
, note
->descpos
+ offset
);
6578 elf32_shlin_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
6580 switch (note
->descsz
)
6585 case 124: /* Linux/SH elf_prpsinfo */
6586 elf_tdata (abfd
)->core
->program
6587 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
6588 elf_tdata (abfd
)->core
->command
6589 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
6592 /* Note that for some reason, a spurious space is tacked
6593 onto the end of the args in some (at least one anyway)
6594 implementations, so strip it off if it exists. */
6597 char *command
= elf_tdata (abfd
)->core
->command
;
6598 int n
= strlen (command
);
6600 if (0 < n
&& command
[n
- 1] == ' ')
6601 command
[n
- 1] = '\0';
6606 #endif /* not SH_TARGET_ALREADY_DEFINED */
6609 /* Return address for Ith PLT stub in section PLT, for relocation REL
6610 or (bfd_vma) -1 if it should not be included. */
6613 sh_elf_plt_sym_val (bfd_vma i
, const asection
*plt
,
6614 const arelent
*rel ATTRIBUTE_UNUSED
)
6616 const struct elf_sh_plt_info
*plt_info
;
6618 plt_info
= get_plt_info (plt
->owner
, (plt
->owner
->flags
& DYNAMIC
) != 0);
6619 return plt
->vma
+ get_plt_offset (plt_info
, i
);
6622 /* Decide whether to attempt to turn absptr or lsda encodings in
6623 shared libraries into pcrel within the given input section. */
6626 sh_elf_use_relative_eh_frame (bfd
*input_bfd ATTRIBUTE_UNUSED
,
6627 struct bfd_link_info
*info
,
6628 asection
*eh_frame_section ATTRIBUTE_UNUSED
)
6630 struct elf_sh_link_hash_table
*htab
= sh_elf_hash_table (info
);
6632 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
6639 /* Adjust the contents of an eh_frame_hdr section before they're output. */
6642 sh_elf_encode_eh_address (bfd
*abfd
,
6643 struct bfd_link_info
*info
,
6644 asection
*osec
, bfd_vma offset
,
6645 asection
*loc_sec
, bfd_vma loc_offset
,
6648 struct elf_sh_link_hash_table
*htab
= sh_elf_hash_table (info
);
6649 struct elf_link_hash_entry
*h
;
6652 return _bfd_elf_encode_eh_address (abfd
, info
, osec
, offset
, loc_sec
,
6653 loc_offset
, encoded
);
6655 h
= htab
->root
.hgot
;
6656 BFD_ASSERT (h
&& h
->root
.type
== bfd_link_hash_defined
);
6658 if (! h
|| (sh_elf_osec_to_segment (abfd
, osec
)
6659 == sh_elf_osec_to_segment (abfd
, loc_sec
->output_section
)))
6660 return _bfd_elf_encode_eh_address (abfd
, info
, osec
, offset
,
6661 loc_sec
, loc_offset
, encoded
);
6663 BFD_ASSERT (sh_elf_osec_to_segment (abfd
, osec
)
6664 == (sh_elf_osec_to_segment
6665 (abfd
, h
->root
.u
.def
.section
->output_section
)));
6667 *encoded
= osec
->vma
+ offset
6668 - (h
->root
.u
.def
.value
6669 + h
->root
.u
.def
.section
->output_section
->vma
6670 + h
->root
.u
.def
.section
->output_offset
);
6672 return DW_EH_PE_datarel
| DW_EH_PE_sdata4
;
6675 #if !defined SH_TARGET_ALREADY_DEFINED
6676 #define TARGET_BIG_SYM sh_elf32_vec
6677 #define TARGET_BIG_NAME "elf32-sh"
6678 #define TARGET_LITTLE_SYM sh_elf32_le_vec
6679 #define TARGET_LITTLE_NAME "elf32-shl"
6682 #define ELF_ARCH bfd_arch_sh
6683 #define ELF_TARGET_ID SH_ELF_DATA
6684 #define ELF_MACHINE_CODE EM_SH
6685 #ifdef __QNXTARGET__
6686 #define ELF_MAXPAGESIZE 0x1000
6688 #define ELF_MAXPAGESIZE 0x80
6691 #define elf_symbol_leading_char '_'
6693 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6694 #define bfd_elf32_bfd_reloc_name_lookup \
6695 sh_elf_reloc_name_lookup
6696 #define elf_info_to_howto sh_elf_info_to_howto
6697 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6698 #define elf_backend_relocate_section sh_elf_relocate_section
6699 #define bfd_elf32_bfd_get_relocated_section_contents \
6700 sh_elf_get_relocated_section_contents
6701 #define bfd_elf32_mkobject sh_elf_mkobject
6702 #define elf_backend_object_p sh_elf_object_p
6703 #define bfd_elf32_bfd_copy_private_bfd_data \
6704 sh_elf_copy_private_data
6705 #define bfd_elf32_bfd_merge_private_bfd_data \
6706 sh_elf_merge_private_data
6708 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6709 #define elf_backend_check_relocs sh_elf_check_relocs
6710 #define elf_backend_copy_indirect_symbol \
6711 sh_elf_copy_indirect_symbol
6712 #define elf_backend_create_dynamic_sections \
6713 sh_elf_create_dynamic_sections
6714 #define bfd_elf32_bfd_link_hash_table_create \
6715 sh_elf_link_hash_table_create
6716 #define elf_backend_adjust_dynamic_symbol \
6717 sh_elf_adjust_dynamic_symbol
6718 #define elf_backend_always_size_sections \
6719 sh_elf_always_size_sections
6720 #define elf_backend_size_dynamic_sections \
6721 sh_elf_size_dynamic_sections
6722 #define elf_backend_omit_section_dynsym sh_elf_omit_section_dynsym
6723 #define elf_backend_finish_dynamic_symbol \
6724 sh_elf_finish_dynamic_symbol
6725 #define elf_backend_finish_dynamic_sections \
6726 sh_elf_finish_dynamic_sections
6727 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6728 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6729 #define elf_backend_can_make_relative_eh_frame \
6730 sh_elf_use_relative_eh_frame
6731 #define elf_backend_can_make_lsda_relative_eh_frame \
6732 sh_elf_use_relative_eh_frame
6733 #define elf_backend_encode_eh_address \
6734 sh_elf_encode_eh_address
6736 #define elf_backend_stack_align 8
6737 #define elf_backend_can_gc_sections 1
6738 #define elf_backend_can_refcount 1
6739 #define elf_backend_want_got_plt 1
6740 #define elf_backend_plt_readonly 1
6741 #define elf_backend_want_plt_sym 0
6742 #define elf_backend_got_header_size 12
6743 #define elf_backend_dtrel_excludes_plt 1
6745 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
6747 #if !defined SH_TARGET_ALREADY_DEFINED
6749 #include "elf32-target.h"
6751 /* NetBSD support. */
6752 #undef TARGET_BIG_SYM
6753 #define TARGET_BIG_SYM sh_elf32_nbsd_vec
6754 #undef TARGET_BIG_NAME
6755 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6756 #undef TARGET_LITTLE_SYM
6757 #define TARGET_LITTLE_SYM sh_elf32_nbsd_le_vec
6758 #undef TARGET_LITTLE_NAME
6759 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6760 #undef ELF_MAXPAGESIZE
6761 #define ELF_MAXPAGESIZE 0x10000
6762 #undef ELF_COMMONPAGESIZE
6763 #undef elf_symbol_leading_char
6764 #define elf_symbol_leading_char 0
6766 #define elf32_bed elf32_sh_nbsd_bed
6768 #include "elf32-target.h"
6771 /* Linux support. */
6772 #undef TARGET_BIG_SYM
6773 #define TARGET_BIG_SYM sh_elf32_linux_be_vec
6774 #undef TARGET_BIG_NAME
6775 #define TARGET_BIG_NAME "elf32-shbig-linux"
6776 #undef TARGET_LITTLE_SYM
6777 #define TARGET_LITTLE_SYM sh_elf32_linux_vec
6778 #undef TARGET_LITTLE_NAME
6779 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6780 #undef ELF_COMMONPAGESIZE
6781 #define ELF_COMMONPAGESIZE 0x1000
6783 #undef elf_backend_grok_prstatus
6784 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6785 #undef elf_backend_grok_psinfo
6786 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6788 #define elf32_bed elf32_sh_lin_bed
6790 #include "elf32-target.h"
6793 /* FDPIC support. */
6794 #undef TARGET_BIG_SYM
6795 #define TARGET_BIG_SYM sh_elf32_fdpic_be_vec
6796 #undef TARGET_BIG_NAME
6797 #define TARGET_BIG_NAME "elf32-shbig-fdpic"
6798 #undef TARGET_LITTLE_SYM
6799 #define TARGET_LITTLE_SYM sh_elf32_fdpic_le_vec
6800 #undef TARGET_LITTLE_NAME
6801 #define TARGET_LITTLE_NAME "elf32-sh-fdpic"
6804 #define elf32_bed elf32_sh_fd_bed
6806 #include "elf32-target.h"
6808 /* VxWorks support. */
6809 #undef TARGET_BIG_SYM
6810 #define TARGET_BIG_SYM sh_elf32_vxworks_vec
6811 #undef TARGET_BIG_NAME
6812 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6813 #undef TARGET_LITTLE_SYM
6814 #define TARGET_LITTLE_SYM sh_elf32_vxworks_le_vec
6815 #undef TARGET_LITTLE_NAME
6816 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6818 #define elf32_bed elf32_sh_vxworks_bed
6820 #undef elf_backend_want_plt_sym
6821 #define elf_backend_want_plt_sym 1
6822 #undef elf_symbol_leading_char
6823 #define elf_symbol_leading_char '_'
6824 #define elf_backend_want_got_underscore 1
6825 #undef elf_backend_grok_prstatus
6826 #undef elf_backend_grok_psinfo
6827 #undef elf_backend_add_symbol_hook
6828 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6829 #undef elf_backend_link_output_symbol_hook
6830 #define elf_backend_link_output_symbol_hook \
6831 elf_vxworks_link_output_symbol_hook
6832 #undef elf_backend_emit_relocs
6833 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6834 #undef elf_backend_final_write_processing
6835 #define elf_backend_final_write_processing \
6836 elf_vxworks_final_write_processing
6837 #undef ELF_MAXPAGESIZE
6838 #define ELF_MAXPAGESIZE 0x1000
6839 #undef ELF_COMMONPAGESIZE
6841 #include "elf32-target.h"
6843 #endif /* not SH_TARGET_ALREADY_DEFINED */