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 /* This function is called after all the input files have been read,
2930 and the input sections have been assigned to output sections.
2931 It's a convenient place to determine the PLT style. */
2934 sh_elf_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
2936 sh_elf_hash_table (info
)->plt_info
= get_plt_info (output_bfd
,
2937 bfd_link_pic (info
));
2939 if (sh_elf_hash_table (info
)->fdpic_p
&& !bfd_link_relocatable (info
)
2940 && !bfd_elf_stack_segment_size (output_bfd
, info
,
2941 "__stacksize", DEFAULT_STACK_SIZE
))
2946 /* Set the sizes of the dynamic sections. */
2949 sh_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2950 struct bfd_link_info
*info
)
2952 struct elf_sh_link_hash_table
*htab
;
2958 htab
= sh_elf_hash_table (info
);
2962 dynobj
= htab
->root
.dynobj
;
2963 BFD_ASSERT (dynobj
!= NULL
);
2965 if (htab
->root
.dynamic_sections_created
)
2967 /* Set the contents of the .interp section to the interpreter. */
2968 if (bfd_link_executable (info
) && !info
->nointerp
)
2970 s
= bfd_get_linker_section (dynobj
, ".interp");
2971 BFD_ASSERT (s
!= NULL
);
2972 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2973 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2977 /* Set up .got offsets for local syms, and space for local dynamic
2979 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2981 bfd_signed_vma
*local_got
;
2982 bfd_signed_vma
*end_local_got
;
2983 union gotref
*local_funcdesc
, *end_local_funcdesc
;
2984 char *local_got_type
;
2985 bfd_size_type locsymcount
;
2986 Elf_Internal_Shdr
*symtab_hdr
;
2989 if (! is_sh_elf (ibfd
))
2992 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2994 struct elf_dyn_relocs
*p
;
2996 for (p
= ((struct elf_dyn_relocs
*)
2997 elf_section_data (s
)->local_dynrel
);
3001 if (! bfd_is_abs_section (p
->sec
)
3002 && bfd_is_abs_section (p
->sec
->output_section
))
3004 /* Input section has been discarded, either because
3005 it is a copy of a linkonce section or due to
3006 linker script /DISCARD/, so we'll be discarding
3009 else if (htab
->vxworks_p
3010 && strcmp (p
->sec
->output_section
->name
,
3013 /* Relocations in vxworks .tls_vars sections are
3014 handled specially by the loader. */
3016 else if (p
->count
!= 0)
3018 srel
= elf_section_data (p
->sec
)->sreloc
;
3019 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3020 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
3022 info
->flags
|= DF_TEXTREL
;
3023 info
->callbacks
->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
3024 p
->sec
->owner
, p
->sec
);
3027 /* If we need relocations, we do not need fixups. */
3028 if (htab
->fdpic_p
&& !bfd_link_pic (info
))
3029 htab
->srofixup
->size
-= 4 * (p
->count
- p
->pc_count
);
3034 symtab_hdr
= &elf_symtab_hdr (ibfd
);
3035 locsymcount
= symtab_hdr
->sh_info
;
3036 s
= htab
->root
.sgot
;
3037 srel
= htab
->root
.srelgot
;
3039 local_got
= elf_local_got_refcounts (ibfd
);
3042 end_local_got
= local_got
+ locsymcount
;
3043 local_got_type
= sh_elf_local_got_type (ibfd
);
3044 local_funcdesc
= sh_elf_local_funcdesc (ibfd
);
3045 for (; local_got
< end_local_got
; ++local_got
)
3049 *local_got
= s
->size
;
3051 if (*local_got_type
== GOT_TLS_GD
)
3053 if (bfd_link_pic (info
))
3054 srel
->size
+= sizeof (Elf32_External_Rela
);
3056 htab
->srofixup
->size
+= 4;
3058 if (*local_got_type
== GOT_FUNCDESC
)
3060 if (local_funcdesc
== NULL
)
3064 size
= locsymcount
* sizeof (union gotref
);
3065 local_funcdesc
= (union gotref
*) bfd_zalloc (ibfd
,
3067 if (local_funcdesc
== NULL
)
3069 sh_elf_local_funcdesc (ibfd
) = local_funcdesc
;
3070 local_funcdesc
+= (local_got
3071 - elf_local_got_refcounts (ibfd
));
3073 local_funcdesc
->refcount
++;
3078 *local_got
= (bfd_vma
) -1;
3083 local_funcdesc
= sh_elf_local_funcdesc (ibfd
);
3086 end_local_funcdesc
= local_funcdesc
+ locsymcount
;
3088 for (; local_funcdesc
< end_local_funcdesc
; ++local_funcdesc
)
3090 if (local_funcdesc
->refcount
> 0)
3092 local_funcdesc
->offset
= htab
->sfuncdesc
->size
;
3093 htab
->sfuncdesc
->size
+= 8;
3094 if (!bfd_link_pic (info
))
3095 htab
->srofixup
->size
+= 8;
3097 htab
->srelfuncdesc
->size
+= sizeof (Elf32_External_Rela
);
3100 local_funcdesc
->offset
= MINUS_ONE
;
3106 if (htab
->tls_ldm_got
.refcount
> 0)
3108 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3110 htab
->tls_ldm_got
.offset
= htab
->root
.sgot
->size
;
3111 htab
->root
.sgot
->size
+= 8;
3112 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
3115 htab
->tls_ldm_got
.offset
= -1;
3117 /* Only the reserved entries should be present. For FDPIC, they go at
3118 the end of .got.plt. */
3121 BFD_ASSERT (htab
->root
.sgotplt
&& htab
->root
.sgotplt
->size
== 12);
3122 htab
->root
.sgotplt
->size
= 0;
3125 /* Allocate global sym .plt and .got entries, and space for global
3126 sym dynamic relocs. */
3127 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
3129 /* Move the reserved entries and the _GLOBAL_OFFSET_TABLE_ symbol to the
3130 end of the FDPIC .got.plt. */
3133 htab
->root
.hgot
->root
.u
.def
.value
= htab
->root
.sgotplt
->size
;
3134 htab
->root
.sgotplt
->size
+= 12;
3137 /* At the very end of the .rofixup section is a pointer to the GOT. */
3138 if (htab
->fdpic_p
&& htab
->srofixup
!= NULL
)
3139 htab
->srofixup
->size
+= 4;
3141 /* We now have determined the sizes of the various dynamic sections.
3142 Allocate memory for them. */
3144 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3146 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3149 if (s
== htab
->root
.splt
3150 || s
== htab
->root
.sgot
3151 || s
== htab
->root
.sgotplt
3152 || s
== htab
->sfuncdesc
3153 || s
== htab
->srofixup
3154 || s
== htab
->sdynbss
)
3156 /* Strip this section if we don't need it; see the
3159 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
3161 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
&& s
!= htab
->srelplt2
)
3164 /* We use the reloc_count field as a counter if we need
3165 to copy relocs into the output file. */
3170 /* It's not one of our sections, so don't allocate space. */
3176 /* If we don't need this section, strip it from the
3177 output file. This is mostly to handle .rela.bss and
3178 .rela.plt. We must create both sections in
3179 create_dynamic_sections, because they must be created
3180 before the linker maps input sections to output
3181 sections. The linker does that before
3182 adjust_dynamic_symbol is called, and it is that
3183 function which decides whether anything needs to go
3184 into these sections. */
3186 s
->flags
|= SEC_EXCLUDE
;
3190 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
3193 /* Allocate memory for the section contents. We use bfd_zalloc
3194 here in case unused entries are not reclaimed before the
3195 section's contents are written out. This should not happen,
3196 but this way if it does, we get a R_SH_NONE reloc instead
3198 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
3199 if (s
->contents
== NULL
)
3203 if (htab
->root
.dynamic_sections_created
)
3205 /* Add some entries to the .dynamic section. We fill in the
3206 values later, in sh_elf_finish_dynamic_sections, but we
3207 must add the entries now so that we get the correct size for
3208 the .dynamic section. The DT_DEBUG entry is filled in by the
3209 dynamic linker and used by the debugger. */
3210 #define add_dynamic_entry(TAG, VAL) \
3211 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3213 if (bfd_link_executable (info
))
3215 if (! add_dynamic_entry (DT_DEBUG
, 0))
3219 if (htab
->root
.splt
->size
!= 0)
3221 if (! add_dynamic_entry (DT_PLTGOT
, 0)
3222 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
3223 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3224 || ! add_dynamic_entry (DT_JMPREL
, 0))
3227 else if ((elf_elfheader (output_bfd
)->e_flags
& EF_SH_FDPIC
))
3229 if (! add_dynamic_entry (DT_PLTGOT
, 0))
3235 if (! add_dynamic_entry (DT_RELA
, 0)
3236 || ! add_dynamic_entry (DT_RELASZ
, 0)
3237 || ! add_dynamic_entry (DT_RELAENT
,
3238 sizeof (Elf32_External_Rela
)))
3241 /* If any dynamic relocs apply to a read-only section,
3242 then we need a DT_TEXTREL entry. */
3243 if ((info
->flags
& DF_TEXTREL
) == 0)
3244 elf_link_hash_traverse (&htab
->root
,
3245 _bfd_elf_maybe_set_textrel
, info
);
3247 if ((info
->flags
& DF_TEXTREL
) != 0)
3249 if (! add_dynamic_entry (DT_TEXTREL
, 0))
3254 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
3257 #undef add_dynamic_entry
3262 /* Add a dynamic relocation to the SRELOC section. */
3264 inline static bfd_vma
3265 sh_elf_add_dyn_reloc (bfd
*output_bfd
, asection
*sreloc
, bfd_vma offset
,
3266 int reloc_type
, long dynindx
, bfd_vma addend
)
3268 Elf_Internal_Rela outrel
;
3269 bfd_vma reloc_offset
;
3271 outrel
.r_offset
= offset
;
3272 outrel
.r_info
= ELF32_R_INFO (dynindx
, reloc_type
);
3273 outrel
.r_addend
= addend
;
3275 reloc_offset
= sreloc
->reloc_count
* sizeof (Elf32_External_Rela
);
3276 BFD_ASSERT (reloc_offset
< sreloc
->size
);
3277 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
3278 sreloc
->contents
+ reloc_offset
);
3279 sreloc
->reloc_count
++;
3281 return reloc_offset
;
3284 /* Add an FDPIC read-only fixup. */
3287 sh_elf_add_rofixup (bfd
*output_bfd
, asection
*srofixup
, bfd_vma offset
)
3289 bfd_vma fixup_offset
;
3291 fixup_offset
= srofixup
->reloc_count
++ * 4;
3292 BFD_ASSERT (fixup_offset
< srofixup
->size
);
3293 bfd_put_32 (output_bfd
, offset
, srofixup
->contents
+ fixup_offset
);
3296 /* Return the offset of the generated .got section from the
3297 _GLOBAL_OFFSET_TABLE_ symbol. */
3299 static bfd_signed_vma
3300 sh_elf_got_offset (struct elf_sh_link_hash_table
*htab
)
3302 return (htab
->root
.sgot
->output_offset
- htab
->root
.sgotplt
->output_offset
3303 - htab
->root
.hgot
->root
.u
.def
.value
);
3306 /* Find the segment number in which OSEC, and output section, is
3310 sh_elf_osec_to_segment (bfd
*output_bfd
, asection
*osec
)
3312 Elf_Internal_Phdr
*p
= NULL
;
3314 if (output_bfd
->xvec
->flavour
== bfd_target_elf_flavour
3315 /* PR ld/17110: Do not look for output segments in an input bfd. */
3316 && output_bfd
->direction
!= read_direction
)
3317 p
= _bfd_elf_find_segment_containing_section (output_bfd
, osec
);
3319 /* FIXME: Nothing ever says what this index is relative to. The kernel
3320 supplies data in terms of the number of load segments but this is
3321 a phdr index and the first phdr may not be a load segment. */
3322 return (p
!= NULL
) ? p
- elf_tdata (output_bfd
)->phdr
: -1;
3326 sh_elf_osec_readonly_p (bfd
*output_bfd
, asection
*osec
)
3328 unsigned seg
= sh_elf_osec_to_segment (output_bfd
, osec
);
3330 return (seg
!= (unsigned) -1
3331 && ! (elf_tdata (output_bfd
)->phdr
[seg
].p_flags
& PF_W
));
3334 /* Generate the initial contents of a local function descriptor, along
3335 with any relocations or fixups required. */
3337 sh_elf_initialize_funcdesc (bfd
*output_bfd
,
3338 struct bfd_link_info
*info
,
3339 struct elf_link_hash_entry
*h
,
3344 struct elf_sh_link_hash_table
*htab
;
3348 htab
= sh_elf_hash_table (info
);
3350 /* FIXME: The ABI says that the offset to the function goes in the
3351 descriptor, along with the segment index. We're RELA, so it could
3352 go in the reloc instead... */
3354 if (h
!= NULL
&& SYMBOL_CALLS_LOCAL (info
, h
))
3356 section
= h
->root
.u
.def
.section
;
3357 value
= h
->root
.u
.def
.value
;
3360 if (h
== NULL
|| SYMBOL_CALLS_LOCAL (info
, h
))
3362 dynindx
= elf_section_data (section
->output_section
)->dynindx
;
3363 addr
= value
+ section
->output_offset
;
3364 seg
= sh_elf_osec_to_segment (output_bfd
, section
->output_section
);
3368 BFD_ASSERT (h
->dynindx
!= -1);
3369 dynindx
= h
->dynindx
;
3373 if (!bfd_link_pic (info
) && SYMBOL_CALLS_LOCAL (info
, h
))
3375 if (h
== NULL
|| h
->root
.type
!= bfd_link_hash_undefweak
)
3377 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
3379 + htab
->sfuncdesc
->output_section
->vma
3380 + htab
->sfuncdesc
->output_offset
);
3381 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
3383 + htab
->sfuncdesc
->output_section
->vma
3384 + htab
->sfuncdesc
->output_offset
);
3387 /* There are no dynamic relocations so fill in the final
3388 address and gp value (barring fixups). */
3389 addr
+= section
->output_section
->vma
;
3390 seg
= htab
->root
.hgot
->root
.u
.def
.value
3391 + htab
->root
.hgot
->root
.u
.def
.section
->output_section
->vma
3392 + htab
->root
.hgot
->root
.u
.def
.section
->output_offset
;
3395 sh_elf_add_dyn_reloc (output_bfd
, htab
->srelfuncdesc
,
3397 + htab
->sfuncdesc
->output_section
->vma
3398 + htab
->sfuncdesc
->output_offset
,
3399 R_SH_FUNCDESC_VALUE
, dynindx
, 0);
3401 bfd_put_32 (output_bfd
, addr
, htab
->sfuncdesc
->contents
+ offset
);
3402 bfd_put_32 (output_bfd
, seg
, htab
->sfuncdesc
->contents
+ offset
+ 4);
3407 /* Install a 20-bit movi20 field starting at ADDR, which occurs in OUTPUT_BFD.
3408 VALUE is the field's value. Return bfd_reloc_ok if successful or an error
3411 static bfd_reloc_status_type
3412 install_movi20_field (bfd
*output_bfd
, unsigned long relocation
,
3413 bfd
*input_bfd
, asection
*input_section
,
3414 bfd_byte
*contents
, bfd_vma offset
)
3416 unsigned long cur_val
;
3418 bfd_reloc_status_type r
;
3420 if (offset
> bfd_get_section_limit (input_bfd
, input_section
))
3421 return bfd_reloc_outofrange
;
3423 r
= bfd_check_overflow (complain_overflow_signed
, 20, 0,
3424 bfd_arch_bits_per_address (input_bfd
), relocation
);
3425 if (r
!= bfd_reloc_ok
)
3428 addr
= contents
+ offset
;
3429 cur_val
= bfd_get_16 (output_bfd
, addr
);
3430 bfd_put_16 (output_bfd
, cur_val
| ((relocation
& 0xf0000) >> 12), addr
);
3431 bfd_put_16 (output_bfd
, relocation
& 0xffff, addr
+ 2);
3433 return bfd_reloc_ok
;
3436 /* Relocate an SH ELF section. */
3439 sh_elf_relocate_section (bfd
*output_bfd
, struct bfd_link_info
*info
,
3440 bfd
*input_bfd
, asection
*input_section
,
3441 bfd_byte
*contents
, Elf_Internal_Rela
*relocs
,
3442 Elf_Internal_Sym
*local_syms
,
3443 asection
**local_sections
)
3445 struct elf_sh_link_hash_table
*htab
;
3446 Elf_Internal_Shdr
*symtab_hdr
;
3447 struct elf_link_hash_entry
**sym_hashes
;
3448 Elf_Internal_Rela
*rel
, *relend
;
3449 bfd_vma
*local_got_offsets
;
3450 asection
*sgot
= NULL
;
3451 asection
*sgotplt
= NULL
;
3452 asection
*splt
= NULL
;
3453 asection
*sreloc
= NULL
;
3454 asection
*srelgot
= NULL
;
3455 bfd_boolean is_vxworks_tls
;
3456 unsigned isec_segment
, got_segment
, plt_segment
, check_segment
[2];
3457 bfd_boolean fdpic_p
= FALSE
;
3459 if (!is_sh_elf (input_bfd
))
3461 bfd_set_error (bfd_error_wrong_format
);
3465 htab
= sh_elf_hash_table (info
);
3468 sgot
= htab
->root
.sgot
;
3469 sgotplt
= htab
->root
.sgotplt
;
3470 srelgot
= htab
->root
.srelgot
;
3471 splt
= htab
->root
.splt
;
3472 fdpic_p
= htab
->fdpic_p
;
3474 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
3475 sym_hashes
= elf_sym_hashes (input_bfd
);
3476 local_got_offsets
= elf_local_got_offsets (input_bfd
);
3478 isec_segment
= sh_elf_osec_to_segment (output_bfd
,
3479 input_section
->output_section
);
3480 if (fdpic_p
&& sgot
)
3481 got_segment
= sh_elf_osec_to_segment (output_bfd
,
3482 sgot
->output_section
);
3485 if (fdpic_p
&& splt
)
3486 plt_segment
= sh_elf_osec_to_segment (output_bfd
,
3487 splt
->output_section
);
3491 /* We have to handle relocations in vxworks .tls_vars sections
3492 specially, because the dynamic loader is 'weird'. */
3493 is_vxworks_tls
= (htab
&& htab
->vxworks_p
&& bfd_link_pic (info
)
3494 && !strcmp (input_section
->output_section
->name
,
3498 relend
= relocs
+ input_section
->reloc_count
;
3499 for (; rel
< relend
; rel
++)
3502 reloc_howto_type
*howto
;
3503 unsigned long r_symndx
;
3504 Elf_Internal_Sym
*sym
;
3506 struct elf_link_hash_entry
*h
;
3508 bfd_vma addend
= (bfd_vma
) 0;
3509 bfd_reloc_status_type r
;
3511 enum got_type got_type
;
3512 const char *symname
= NULL
;
3513 bfd_boolean resolved_to_zero
;
3515 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3517 r_type
= ELF32_R_TYPE (rel
->r_info
);
3519 /* Many of the relocs are only used for relaxing, and are
3520 handled entirely by the relaxation code. */
3521 if (r_type
>= (int) R_SH_GNU_VTINHERIT
3522 && r_type
<= (int) R_SH_LABEL
)
3524 if (r_type
== (int) R_SH_NONE
)
3528 || r_type
>= R_SH_max
3529 || (r_type
>= (int) R_SH_FIRST_INVALID_RELOC
3530 && r_type
<= (int) R_SH_LAST_INVALID_RELOC
)
3531 || (r_type
>= (int) R_SH_FIRST_INVALID_RELOC_2
3532 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_2
)
3533 || ( r_type
>= (int) R_SH_FIRST_INVALID_RELOC_3
3534 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_3
)
3535 || ( r_type
>= (int) R_SH_FIRST_INVALID_RELOC_4
3536 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_4
)
3537 || ( r_type
>= (int) R_SH_FIRST_INVALID_RELOC_5
3538 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_5
)
3539 || ( r_type
>= (int) R_SH_FIRST_INVALID_RELOC_6
3540 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_6
))
3542 bfd_set_error (bfd_error_bad_value
);
3546 howto
= get_howto_table (output_bfd
) + r_type
;
3548 /* For relocs that aren't partial_inplace, we get the addend from
3550 if (! howto
->partial_inplace
)
3551 addend
= rel
->r_addend
;
3553 resolved_to_zero
= FALSE
;
3557 check_segment
[0] = -1;
3558 check_segment
[1] = -1;
3559 if (r_symndx
< symtab_hdr
->sh_info
)
3561 sym
= local_syms
+ r_symndx
;
3562 sec
= local_sections
[r_symndx
];
3564 symname
= bfd_elf_string_from_elf_section
3565 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
3566 if (symname
== NULL
|| *symname
== '\0')
3567 symname
= bfd_section_name (sec
);
3569 relocation
= (sec
->output_section
->vma
3570 + sec
->output_offset
3573 if (sec
!= NULL
&& discarded_section (sec
))
3574 /* Handled below. */
3576 else if (bfd_link_relocatable (info
))
3578 /* This is a relocatable link. We don't have to change
3579 anything, unless the reloc is against a section symbol,
3580 in which case we have to adjust according to where the
3581 section symbol winds up in the output section. */
3582 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
3584 if (! howto
->partial_inplace
)
3586 /* For relocations with the addend in the
3587 relocation, we need just to update the addend.
3588 All real relocs are of type partial_inplace; this
3589 code is mostly for completeness. */
3590 rel
->r_addend
+= sec
->output_offset
;
3595 /* Relocs of type partial_inplace need to pick up the
3596 contents in the contents and add the offset resulting
3597 from the changed location of the section symbol.
3598 Using _bfd_final_link_relocate (e.g. goto
3599 final_link_relocate) here would be wrong, because
3600 relocations marked pc_relative would get the current
3601 location subtracted, and we must only do that at the
3603 r
= _bfd_relocate_contents (howto
, input_bfd
,
3606 contents
+ rel
->r_offset
);
3607 goto relocation_done
;
3612 else if (! howto
->partial_inplace
)
3614 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
3615 addend
= rel
->r_addend
;
3617 else if ((sec
->flags
& SEC_MERGE
)
3618 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
3622 if (howto
->rightshift
|| howto
->src_mask
!= 0xffffffff)
3625 /* xgettext:c-format */
3626 (_("%pB(%pA+%#" PRIx64
"): "
3627 "%s relocation against SEC_MERGE section"),
3628 input_bfd
, input_section
,
3629 (uint64_t) rel
->r_offset
, howto
->name
);
3633 addend
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3636 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
3638 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
3639 bfd_put_32 (input_bfd
, addend
, contents
+ rel
->r_offset
);
3645 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3648 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3649 symname
= h
->root
.root
.string
;
3650 while (h
->root
.type
== bfd_link_hash_indirect
3651 || h
->root
.type
== bfd_link_hash_warning
)
3652 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3653 if (h
->root
.type
== bfd_link_hash_defined
3654 || h
->root
.type
== bfd_link_hash_defweak
)
3658 dyn
= htab
? htab
->root
.dynamic_sections_created
: FALSE
;
3659 sec
= h
->root
.u
.def
.section
;
3660 /* In these cases, we don't need the relocation value.
3661 We check specially because in some obscure cases
3662 sec->output_section will be NULL. */
3663 if (r_type
== R_SH_GOTPC
3664 || r_type
== R_SH_GOTPC_LOW16
3665 || r_type
== R_SH_GOTPC_MEDLOW16
3666 || r_type
== R_SH_GOTPC_MEDHI16
3667 || r_type
== R_SH_GOTPC_HI16
3668 || ((r_type
== R_SH_PLT32
3669 || r_type
== R_SH_PLT_LOW16
3670 || r_type
== R_SH_PLT_MEDLOW16
3671 || r_type
== R_SH_PLT_MEDHI16
3672 || r_type
== R_SH_PLT_HI16
)
3673 && h
->plt
.offset
!= (bfd_vma
) -1)
3674 || ((r_type
== R_SH_GOT32
3675 || r_type
== R_SH_GOT20
3676 || r_type
== R_SH_GOTFUNCDESC
3677 || r_type
== R_SH_GOTFUNCDESC20
3678 || r_type
== R_SH_GOTOFFFUNCDESC
3679 || r_type
== R_SH_GOTOFFFUNCDESC20
3680 || r_type
== R_SH_FUNCDESC
3681 || r_type
== R_SH_GOT_LOW16
3682 || r_type
== R_SH_GOT_MEDLOW16
3683 || r_type
== R_SH_GOT_MEDHI16
3684 || r_type
== R_SH_GOT_HI16
)
3685 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
3686 bfd_link_pic (info
),
3688 && (! bfd_link_pic (info
)
3689 || (! info
->symbolic
&& h
->dynindx
!= -1)
3690 || !h
->def_regular
))
3691 /* The cases above are those in which relocation is
3692 overwritten in the switch block below. The cases
3693 below are those in which we must defer relocation
3694 to run-time, because we can't resolve absolute
3695 addresses when creating a shared library. */
3696 || (bfd_link_pic (info
)
3697 && ((! info
->symbolic
&& h
->dynindx
!= -1)
3699 && ((r_type
== R_SH_DIR32
3700 && !h
->forced_local
)
3701 || (r_type
== R_SH_REL32
3702 && !SYMBOL_CALLS_LOCAL (info
, h
)))
3703 && ((input_section
->flags
& SEC_ALLOC
) != 0
3704 /* DWARF will emit R_SH_DIR32 relocations in its
3705 sections against symbols defined externally
3706 in shared libraries. We can't do anything
3708 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
3709 && h
->def_dynamic
)))
3710 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3711 sections because such sections are not SEC_ALLOC and
3712 thus ld.so will not process them. */
3713 || (sec
->output_section
== NULL
3714 && ((input_section
->flags
& SEC_DEBUGGING
) != 0
3716 || (sec
->output_section
== NULL
3717 && (sh_elf_hash_entry (h
)->got_type
== GOT_TLS_IE
3718 || sh_elf_hash_entry (h
)->got_type
== GOT_TLS_GD
)))
3720 else if (sec
->output_section
!= NULL
)
3721 relocation
= (h
->root
.u
.def
.value
3722 + sec
->output_section
->vma
3723 + sec
->output_offset
);
3724 else if (!bfd_link_relocatable (info
)
3725 && (_bfd_elf_section_offset (output_bfd
, info
,
3731 /* xgettext:c-format */
3732 (_("%pB(%pA+%#" PRIx64
"): "
3733 "unresolvable %s relocation against symbol `%s'"),
3736 (uint64_t) rel
->r_offset
,
3738 h
->root
.root
.string
);
3742 else if (h
->root
.type
== bfd_link_hash_undefweak
)
3743 resolved_to_zero
= UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
);
3744 else if (info
->unresolved_syms_in_objects
== RM_IGNORE
3745 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
3747 else if (!bfd_link_relocatable (info
))
3748 info
->callbacks
->undefined_symbol
3749 (info
, h
->root
.root
.string
, input_bfd
, input_section
,
3751 (info
->unresolved_syms_in_objects
== RM_DIAGNOSE
3752 && !info
->warn_unresolved_syms
)
3753 || ELF_ST_VISIBILITY (h
->other
));
3756 if (sec
!= NULL
&& discarded_section (sec
))
3757 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
3758 rel
, 1, relend
, howto
, 0, contents
);
3760 if (bfd_link_relocatable (info
))
3763 /* Check for inter-segment relocations in FDPIC files. Most
3764 relocations connect the relocation site to the location of
3765 the target symbol, but there are some exceptions below. */
3766 check_segment
[0] = isec_segment
;
3768 check_segment
[1] = sh_elf_osec_to_segment (output_bfd
,
3769 sec
->output_section
);
3771 check_segment
[1] = -1;
3773 switch ((int) r_type
)
3775 final_link_relocate
:
3776 /* COFF relocs don't use the addend. The addend is used for
3777 R_SH_DIR32 to be compatible with other compilers. */
3778 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3779 contents
, rel
->r_offset
,
3780 relocation
, addend
);
3784 goto final_link_relocate
;
3789 /* If the reloc is against the start of this section, then
3790 the assembler has already taken care of it and the reloc
3791 is here only to assist in relaxing. If the reloc is not
3792 against the start of this section, then it's against an
3793 external symbol and we must deal with it ourselves. */
3794 if (input_section
->output_section
->vma
+ input_section
->output_offset
3797 int disp
= (relocation
3798 - input_section
->output_section
->vma
3799 - input_section
->output_offset
3805 case R_SH_DIR8WPZ
: mask
= 1; break;
3806 case R_SH_DIR8WPL
: mask
= 3; break;
3807 default: mask
= 0; break;
3812 /* xgettext:c-format */
3813 (_("%pB: %#" PRIx64
": fatal: "
3814 "unaligned branch target for relax-support relocation"),
3815 input_section
->owner
,
3816 (uint64_t) rel
->r_offset
);
3817 bfd_set_error (bfd_error_bad_value
);
3821 goto final_link_relocate
;
3827 bfd_set_error (bfd_error_bad_value
);
3835 goto final_link_relocate
;
3842 /* xgettext:c-format */
3843 (_("%pB: %#" PRIx64
": fatal: "
3844 "unaligned %s relocation %#" PRIx64
),
3845 input_section
->owner
, (uint64_t) rel
->r_offset
,
3846 howto
->name
, (uint64_t) relocation
);
3847 bfd_set_error (bfd_error_bad_value
);
3850 goto final_link_relocate
;
3858 /* xgettext:c-format */
3859 (_("%pB: %#" PRIx64
": fatal: "
3860 "unaligned %s relocation %#" PRIx64
""),
3861 input_section
->owner
,
3862 (uint64_t) rel
->r_offset
, howto
->name
,
3863 (uint64_t) relocation
);
3864 bfd_set_error (bfd_error_bad_value
);
3867 goto final_link_relocate
;
3870 if ((signed int)relocation
< -32
3871 || (signed int)relocation
> 32)
3874 /* xgettext:c-format */
3875 (_("%pB: %#" PRIx64
": fatal: R_SH_PSHA relocation %" PRId64
3876 " not in range -32..32"),
3877 input_section
->owner
,
3878 (uint64_t) rel
->r_offset
,
3879 (int64_t) relocation
);
3880 bfd_set_error (bfd_error_bad_value
);
3883 goto final_link_relocate
;
3886 if ((signed int)relocation
< -16
3887 || (signed int)relocation
> 16)
3890 /* xgettext:c-format */
3891 (_("%pB: %#" PRIx64
": fatal: R_SH_PSHL relocation %" PRId64
3892 " not in range -32..32"),
3893 input_section
->owner
,
3894 (uint64_t) rel
->r_offset
,
3895 (int64_t) relocation
);
3896 bfd_set_error (bfd_error_bad_value
);
3899 goto final_link_relocate
;
3903 if (bfd_link_pic (info
)
3905 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
3906 && !resolved_to_zero
)
3907 || h
->root
.type
!= bfd_link_hash_undefweak
)
3908 && r_symndx
!= STN_UNDEF
3909 && (input_section
->flags
& SEC_ALLOC
) != 0
3911 && (r_type
== R_SH_DIR32
3912 || !SYMBOL_CALLS_LOCAL (info
, h
)))
3914 Elf_Internal_Rela outrel
;
3916 bfd_boolean skip
, relocate
;
3918 /* When generating a shared object, these relocations
3919 are copied into the output file to be resolved at run
3924 sreloc
= _bfd_elf_get_dynamic_reloc_section
3925 (input_bfd
, input_section
, /*rela?*/ TRUE
);
3934 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3936 if (outrel
.r_offset
== (bfd_vma
) -1)
3938 else if (outrel
.r_offset
== (bfd_vma
) -2)
3939 skip
= TRUE
, relocate
= TRUE
;
3940 outrel
.r_offset
+= (input_section
->output_section
->vma
3941 + input_section
->output_offset
);
3944 memset (&outrel
, 0, sizeof outrel
);
3945 else if (r_type
== R_SH_REL32
)
3947 BFD_ASSERT (h
!= NULL
&& h
->dynindx
!= -1);
3948 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_REL32
);
3950 = (howto
->partial_inplace
3951 ? bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
)
3956 || ((info
->symbolic
|| h
->dynindx
== -1)
3957 && h
->def_regular
)))
3961 BFD_ASSERT (sec
!= NULL
);
3962 BFD_ASSERT (sec
->output_section
!= NULL
);
3963 dynindx
= elf_section_data (sec
->output_section
)->dynindx
;
3964 outrel
.r_info
= ELF32_R_INFO (dynindx
, R_SH_DIR32
);
3965 outrel
.r_addend
= relocation
;
3967 += (howto
->partial_inplace
3968 ? bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
)
3970 outrel
.r_addend
-= sec
->output_section
->vma
;
3974 /* h->dynindx may be -1 if this symbol was marked to
3977 || ((info
->symbolic
|| h
->dynindx
== -1)
3980 relocate
= howto
->partial_inplace
;
3981 outrel
.r_info
= ELF32_R_INFO (0, R_SH_RELATIVE
);
3985 BFD_ASSERT (h
->dynindx
!= -1);
3986 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_DIR32
);
3988 outrel
.r_addend
= relocation
;
3990 += (howto
->partial_inplace
3991 ? bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
)
3995 loc
= sreloc
->contents
;
3996 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3997 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3999 check_segment
[0] = check_segment
[1] = -1;
4001 /* If this reloc is against an external symbol, we do
4002 not want to fiddle with the addend. Otherwise, we
4003 need to include the symbol value so that it becomes
4004 an addend for the dynamic reloc. */
4008 else if (fdpic_p
&& !bfd_link_pic (info
)
4009 && r_type
== R_SH_DIR32
4010 && (input_section
->flags
& SEC_ALLOC
) != 0)
4016 if (sh_elf_osec_readonly_p (output_bfd
,
4017 input_section
->output_section
))
4020 /* xgettext:c-format */
4021 (_("%pB(%pA+%#" PRIx64
"): "
4022 "cannot emit fixup to `%s' in read-only section"),
4025 (uint64_t) rel
->r_offset
,
4030 offset
= _bfd_elf_section_offset (output_bfd
, info
,
4031 input_section
, rel
->r_offset
);
4032 if (offset
!= (bfd_vma
)-1)
4033 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
4034 input_section
->output_section
->vma
4035 + input_section
->output_offset
4038 check_segment
[0] = check_segment
[1] = -1;
4040 /* We don't want warnings for non-NULL tests on undefined weak
4042 else if (r_type
== R_SH_REL32
4044 && h
->root
.type
== bfd_link_hash_undefweak
)
4045 check_segment
[0] = check_segment
[1] = -1;
4046 goto final_link_relocate
;
4049 /* Relocation is to the entry for this symbol in the
4050 procedure linkage table. */
4054 || ! bfd_link_pic (info
)
4057 || h
->plt
.offset
== (bfd_vma
) -1
4058 || h
->got
.offset
!= (bfd_vma
) -1)
4061 /* Relocation is to the entry for this symbol in the global
4062 offset table extension for the procedure linkage table. */
4065 BFD_ASSERT (sgotplt
!= NULL
);
4066 relocation
= (sgotplt
->output_offset
4067 + (get_plt_index (htab
->plt_info
, h
->plt
.offset
)
4071 relocation
-= GOT_BIAS
;
4074 goto final_link_relocate
;
4079 /* Relocation is to the entry for this symbol in the global
4083 BFD_ASSERT (sgot
!= NULL
);
4084 check_segment
[0] = check_segment
[1] = -1;
4090 off
= h
->got
.offset
;
4091 BFD_ASSERT (off
!= (bfd_vma
) -1);
4093 dyn
= htab
->root
.dynamic_sections_created
;
4094 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
4095 bfd_link_pic (info
),
4097 || (bfd_link_pic (info
)
4098 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4099 || ((ELF_ST_VISIBILITY (h
->other
)
4100 || resolved_to_zero
)
4101 && h
->root
.type
== bfd_link_hash_undefweak
))
4103 /* This is actually a static link, or it is a
4104 -Bsymbolic link and the symbol is defined
4105 locally, or the symbol was forced to be local
4106 because of a version file. We must initialize
4107 this entry in the global offset table. Since the
4108 offset must always be a multiple of 4, we use the
4109 least significant bit to record whether we have
4110 initialized it already.
4112 When doing a dynamic link, we create a .rela.got
4113 relocation entry to initialize the value. This
4114 is done in the finish_dynamic_symbol routine. */
4119 bfd_put_32 (output_bfd
, relocation
,
4120 sgot
->contents
+ off
);
4123 /* If we initialize the GOT entry here with a valid
4124 symbol address, also add a fixup. */
4125 if (fdpic_p
&& !bfd_link_pic (info
)
4126 && sh_elf_hash_entry (h
)->got_type
== GOT_NORMAL
4127 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
4128 || h
->root
.type
!= bfd_link_hash_undefweak
))
4129 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
4130 sgot
->output_section
->vma
4131 + sgot
->output_offset
4136 relocation
= sh_elf_got_offset (htab
) + off
;
4140 BFD_ASSERT (local_got_offsets
!= NULL
4141 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
4143 off
= local_got_offsets
[r_symndx
];
4145 /* The offset must always be a multiple of 4. We use
4146 the least significant bit to record whether we have
4147 already generated the necessary reloc. */
4152 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
4154 if (bfd_link_pic (info
))
4156 Elf_Internal_Rela outrel
;
4159 outrel
.r_offset
= (sgot
->output_section
->vma
4160 + sgot
->output_offset
4165 = elf_section_data (sec
->output_section
)->dynindx
;
4166 outrel
.r_info
= ELF32_R_INFO (dynindx
, R_SH_DIR32
);
4167 outrel
.r_addend
= relocation
;
4168 outrel
.r_addend
-= sec
->output_section
->vma
;
4172 outrel
.r_info
= ELF32_R_INFO (0, R_SH_RELATIVE
);
4173 outrel
.r_addend
= relocation
;
4175 loc
= srelgot
->contents
;
4176 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4177 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4180 && (sh_elf_local_got_type (input_bfd
) [r_symndx
]
4182 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
4183 sgot
->output_section
->vma
4184 + sgot
->output_offset
4187 local_got_offsets
[r_symndx
] |= 1;
4190 relocation
= sh_elf_got_offset (htab
) + off
;
4194 relocation
-= GOT_BIAS
;
4197 if (r_type
== R_SH_GOT20
)
4199 r
= install_movi20_field (output_bfd
, relocation
+ addend
,
4200 input_bfd
, input_section
, contents
,
4205 goto final_link_relocate
;
4209 /* GOTOFF relocations are relative to _GLOBAL_OFFSET_TABLE_, which
4210 we place at the start of the .got.plt section. This is the same
4211 as the start of the output .got section, unless there are function
4212 descriptors in front of it. */
4214 BFD_ASSERT (sgotplt
!= NULL
);
4215 check_segment
[0] = got_segment
;
4216 relocation
-= sgotplt
->output_section
->vma
+ sgotplt
->output_offset
4217 + htab
->root
.hgot
->root
.u
.def
.value
;
4220 relocation
-= GOT_BIAS
;
4223 addend
= rel
->r_addend
;
4225 if (r_type
== R_SH_GOTOFF20
)
4227 r
= install_movi20_field (output_bfd
, relocation
+ addend
,
4228 input_bfd
, input_section
, contents
,
4233 goto final_link_relocate
;
4236 /* Use global offset table as symbol value. */
4238 BFD_ASSERT (sgotplt
!= NULL
);
4239 relocation
= sgotplt
->output_section
->vma
+ sgotplt
->output_offset
;
4242 relocation
+= GOT_BIAS
;
4245 addend
= rel
->r_addend
;
4247 goto final_link_relocate
;
4250 /* Relocation is to the entry for this symbol in the
4251 procedure linkage table. */
4253 /* Resolve a PLT reloc against a local symbol directly,
4254 without using the procedure linkage table. */
4256 goto final_link_relocate
;
4258 /* We don't want to warn on calls to undefined weak symbols,
4259 as calls to them must be protected by non-NULL tests
4260 anyway, and unprotected calls would invoke undefined
4262 if (h
->root
.type
== bfd_link_hash_undefweak
)
4263 check_segment
[0] = check_segment
[1] = -1;
4265 if (h
->forced_local
)
4266 goto final_link_relocate
;
4268 if (h
->plt
.offset
== (bfd_vma
) -1)
4270 /* We didn't make a PLT entry for this symbol. This
4271 happens when statically linking PIC code, or when
4272 using -Bsymbolic. */
4273 goto final_link_relocate
;
4276 BFD_ASSERT (splt
!= NULL
);
4277 check_segment
[1] = plt_segment
;
4278 relocation
= (splt
->output_section
->vma
4279 + splt
->output_offset
4282 addend
= rel
->r_addend
;
4284 goto final_link_relocate
;
4286 /* Relocation is to the canonical function descriptor for this
4287 symbol, possibly via the GOT. Initialize the GOT
4288 entry and function descriptor if necessary. */
4289 case R_SH_GOTFUNCDESC
:
4290 case R_SH_GOTFUNCDESC20
:
4294 asection
*reloc_section
;
4295 bfd_vma reloc_offset
;
4296 int reloc_type
= R_SH_FUNCDESC
;
4300 check_segment
[0] = check_segment
[1] = -1;
4302 /* FIXME: See what FRV does for global symbols in the
4303 executable, with --export-dynamic. Do they need ld.so
4304 to allocate official descriptors? See what this code
4310 if (r_type
== R_SH_FUNCDESC
)
4312 reloc_section
= input_section
;
4313 reloc_offset
= rel
->r_offset
;
4317 reloc_section
= sgot
;
4320 reloc_offset
= h
->got
.offset
;
4323 BFD_ASSERT (local_got_offsets
!= NULL
);
4324 reloc_offset
= local_got_offsets
[r_symndx
];
4326 BFD_ASSERT (reloc_offset
!= MINUS_ONE
);
4328 if (reloc_offset
& 1)
4331 goto funcdesc_done_got
;
4335 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
4336 && (SYMBOL_CALLS_LOCAL (info
, h
)
4337 || !htab
->root
.dynamic_sections_created
))
4338 /* Undefined weak symbol which will not be dynamically
4339 resolved later; leave it at zero. */
4340 goto funcdesc_leave_zero
;
4341 else if (SYMBOL_CALLS_LOCAL (info
, h
)
4342 && ! SYMBOL_FUNCDESC_LOCAL (info
, h
))
4344 /* If the symbol needs a non-local function descriptor
4345 but binds locally (i.e., its visibility is
4346 protected), emit a dynamic relocation decayed to
4347 section+offset. This is an optimization; the dynamic
4348 linker would resolve our function descriptor request
4349 to our copy of the function anyway. */
4350 dynindx
= elf_section_data (h
->root
.u
.def
.section
4351 ->output_section
)->dynindx
;
4352 relocation
+= h
->root
.u
.def
.section
->output_offset
4353 + h
->root
.u
.def
.value
;
4355 else if (! SYMBOL_FUNCDESC_LOCAL (info
, h
))
4357 /* If the symbol is dynamic and there will be dynamic
4358 symbol resolution because we are or are linked with a
4359 shared library, emit a FUNCDESC relocation such that
4360 the dynamic linker will allocate the function
4362 BFD_ASSERT (h
->dynindx
!= -1);
4363 dynindx
= h
->dynindx
;
4369 /* Otherwise, we know we have a private function
4370 descriptor, so reference it directly. */
4371 reloc_type
= R_SH_DIR32
;
4372 dynindx
= elf_section_data (htab
->sfuncdesc
4373 ->output_section
)->dynindx
;
4377 offset
= sh_elf_hash_entry (h
)->funcdesc
.offset
;
4378 BFD_ASSERT (offset
!= MINUS_ONE
);
4379 if ((offset
& 1) == 0)
4381 if (!sh_elf_initialize_funcdesc (output_bfd
, info
, h
,
4384 sh_elf_hash_entry (h
)->funcdesc
.offset
|= 1;
4389 union gotref
*local_funcdesc
;
4391 local_funcdesc
= sh_elf_local_funcdesc (input_bfd
);
4392 offset
= local_funcdesc
[r_symndx
].offset
;
4393 BFD_ASSERT (offset
!= MINUS_ONE
);
4394 if ((offset
& 1) == 0)
4396 if (!sh_elf_initialize_funcdesc (output_bfd
, info
, NULL
,
4400 local_funcdesc
[r_symndx
].offset
|= 1;
4404 relocation
= htab
->sfuncdesc
->output_offset
+ (offset
& ~1);
4407 if (!bfd_link_pic (info
) && SYMBOL_FUNCDESC_LOCAL (info
, h
))
4411 if (sh_elf_osec_readonly_p (output_bfd
,
4412 reloc_section
->output_section
))
4415 /* xgettext:c-format */
4416 (_("%pB(%pA+%#" PRIx64
"): "
4417 "cannot emit fixup to `%s' in read-only section"),
4420 (uint64_t) rel
->r_offset
,
4425 offset
= _bfd_elf_section_offset (output_bfd
, info
,
4426 reloc_section
, reloc_offset
);
4428 if (offset
!= (bfd_vma
)-1)
4429 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
4431 + reloc_section
->output_section
->vma
4432 + reloc_section
->output_offset
);
4434 else if ((reloc_section
->output_section
->flags
4435 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
4439 if (sh_elf_osec_readonly_p (output_bfd
,
4440 reloc_section
->output_section
))
4442 info
->callbacks
->warning
4444 _("cannot emit dynamic relocations in read-only section"),
4445 symname
, input_bfd
, reloc_section
, reloc_offset
);
4449 offset
= _bfd_elf_section_offset (output_bfd
, info
,
4450 reloc_section
, reloc_offset
);
4452 if (offset
!= (bfd_vma
)-1)
4453 sh_elf_add_dyn_reloc (output_bfd
, srelgot
,
4455 + reloc_section
->output_section
->vma
4456 + reloc_section
->output_offset
,
4457 reloc_type
, dynindx
, relocation
);
4459 if (r_type
== R_SH_FUNCDESC
)
4467 goto funcdesc_leave_zero
;
4471 if (SYMBOL_FUNCDESC_LOCAL (info
, h
))
4472 relocation
+= htab
->sfuncdesc
->output_section
->vma
;
4473 funcdesc_leave_zero
:
4474 if (r_type
!= R_SH_FUNCDESC
)
4476 bfd_put_32 (output_bfd
, relocation
,
4477 reloc_section
->contents
+ reloc_offset
);
4481 local_got_offsets
[r_symndx
] |= 1;
4485 relocation
= sh_elf_got_offset (htab
) + reloc_offset
;
4487 relocation
-= GOT_BIAS
;
4490 if (r_type
== R_SH_GOTFUNCDESC20
)
4492 r
= install_movi20_field (output_bfd
, relocation
+ addend
,
4493 input_bfd
, input_section
, contents
,
4498 goto final_link_relocate
;
4502 case R_SH_GOTOFFFUNCDESC
:
4503 case R_SH_GOTOFFFUNCDESC20
:
4504 /* FIXME: See R_SH_FUNCDESC comment about global symbols in the
4505 executable and --export-dynamic. If such symbols get
4506 ld.so-allocated descriptors we can not use R_SH_GOTOFFFUNCDESC
4510 check_segment
[0] = check_segment
[1] = -1;
4512 addend
= rel
->r_addend
;
4514 if (h
&& (h
->root
.type
== bfd_link_hash_undefweak
4515 || !SYMBOL_FUNCDESC_LOCAL (info
, h
)))
4518 /* xgettext:c-format */
4519 (_("%pB(%pA+%#" PRIx64
"): "
4520 "%s relocation against external symbol \"%s\""),
4521 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
4522 howto
->name
, h
->root
.root
.string
);
4529 /* Otherwise, we know we have a private function
4530 descriptor, so reference it directly. */
4533 offset
= sh_elf_hash_entry (h
)->funcdesc
.offset
;
4534 BFD_ASSERT (offset
!= MINUS_ONE
);
4535 if ((offset
& 1) == 0)
4537 if (!sh_elf_initialize_funcdesc (output_bfd
, info
, h
,
4540 sh_elf_hash_entry (h
)->funcdesc
.offset
|= 1;
4545 union gotref
*local_funcdesc
;
4547 local_funcdesc
= sh_elf_local_funcdesc (input_bfd
);
4548 offset
= local_funcdesc
[r_symndx
].offset
;
4549 BFD_ASSERT (offset
!= MINUS_ONE
);
4550 if ((offset
& 1) == 0)
4552 if (!sh_elf_initialize_funcdesc (output_bfd
, info
, NULL
,
4556 local_funcdesc
[r_symndx
].offset
|= 1;
4560 relocation
= htab
->sfuncdesc
->output_offset
+ (offset
& ~1);
4563 relocation
-= (htab
->root
.hgot
->root
.u
.def
.value
4564 + sgotplt
->output_offset
);
4566 relocation
-= GOT_BIAS
;
4569 if (r_type
== R_SH_GOTOFFFUNCDESC20
)
4571 r
= install_movi20_field (output_bfd
, relocation
+ addend
,
4572 input_bfd
, input_section
, contents
,
4577 goto final_link_relocate
;
4579 case R_SH_LOOP_START
:
4581 static bfd_vma start
, end
;
4583 start
= (relocation
+ rel
->r_addend
4584 - (sec
->output_section
->vma
+ sec
->output_offset
));
4585 r
= sh_elf_reloc_loop (r_type
, input_bfd
, input_section
, contents
,
4586 rel
->r_offset
, sec
, start
, end
);
4590 end
= (relocation
+ rel
->r_addend
4591 - (sec
->output_section
->vma
+ sec
->output_offset
));
4592 r
= sh_elf_reloc_loop (r_type
, input_bfd
, input_section
, contents
,
4593 rel
->r_offset
, sec
, start
, end
);
4597 case R_SH_TLS_GD_32
:
4598 case R_SH_TLS_IE_32
:
4600 check_segment
[0] = check_segment
[1] = -1;
4601 r_type
= sh_elf_optimized_tls_reloc (info
, r_type
, h
== NULL
);
4602 got_type
= GOT_UNKNOWN
;
4603 if (h
== NULL
&& local_got_offsets
)
4604 got_type
= sh_elf_local_got_type (input_bfd
) [r_symndx
];
4607 got_type
= sh_elf_hash_entry (h
)->got_type
;
4608 if (! bfd_link_pic (info
)
4609 && (h
->dynindx
== -1
4611 r_type
= R_SH_TLS_LE_32
;
4614 if (r_type
== R_SH_TLS_GD_32
&& got_type
== GOT_TLS_IE
)
4615 r_type
= R_SH_TLS_IE_32
;
4617 if (r_type
== R_SH_TLS_LE_32
)
4620 unsigned short insn
;
4622 if (ELF32_R_TYPE (rel
->r_info
) == R_SH_TLS_GD_32
)
4624 /* GD->LE transition:
4625 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4626 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4627 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4629 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4631 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4633 offset
= rel
->r_offset
;
4637 /* xgettext:c-format */
4638 (_("%pB(%pA): offset in relocation for GD->LE translation is too small: %#" PRIx64
),
4639 input_bfd
, input_section
, (uint64_t) offset
);
4643 /* Size of GD instructions is 16 or 18. */
4645 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4646 if ((insn
& 0xff00) == 0xc700)
4648 BFD_ASSERT (offset
>= 2);
4650 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4653 if ((insn
& 0xff00) != 0xd400)
4655 /* xgettext:c-format */ /* The backslash is to prevent bogus trigraph detection. */
4656 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0xd4?\?)"),
4657 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4659 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 2);
4661 if ((insn
& 0xff00) != 0xc700)
4663 /* xgettext:c-format */
4664 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0xc7?\?)"),
4665 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4667 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 4);
4668 if ((insn
& 0xff00) != 0xd100)
4670 /* xgettext:c-format */
4671 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0xd1?\?)"),
4672 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4674 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 6);
4677 /* xgettext:c-format */
4678 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x310c)"),
4679 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4681 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 8);
4684 /* xgettext:c-format */
4685 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x410b)"),
4686 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4688 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 10);
4691 /* xgettext:c-format */
4692 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x34cc)"),
4693 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4695 bfd_put_16 (output_bfd
, 0x0012, contents
+ offset
+ 2);
4696 bfd_put_16 (output_bfd
, 0x304c, contents
+ offset
+ 4);
4697 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 6);
4698 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 8);
4699 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 10);
4705 /* IE->LE transition:
4722 offset
= rel
->r_offset
;
4726 /* xgettext:c-format */
4727 (_("%pB(%pA): offset in relocation for IE->LE translation is too small: %#" PRIx64
),
4728 input_bfd
, input_section
, (uint64_t) offset
);
4732 /* Size of IE instructions is 10 or 12. */
4734 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4735 if ((insn
& 0xf0ff) == 0x0012)
4737 BFD_ASSERT (offset
>= 2);
4739 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4742 if ((insn
& 0xff00) != 0xd000)
4744 /* xgettext:c-format */
4745 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0xd0??: mov.l)"),
4746 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4748 target
= insn
& 0x00ff;
4750 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 2);
4751 if ((insn
& 0xf0ff) != 0x0012)
4753 /* xgettext:c-format */
4754 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x0?12: stc)"),
4755 input_bfd
, input_section
, (uint64_t) (offset
+ 2), (int) insn
);
4757 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 4);
4758 if ((insn
& 0xf0ff) != 0x00ce)
4760 /* xgettext:c-format */
4761 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x0?ce: mov.l)"),
4762 input_bfd
, input_section
, (uint64_t) (offset
+ 4), (int) insn
);
4764 insn
= 0xd000 | (insn
& 0x0f00) | target
;
4765 bfd_put_16 (output_bfd
, insn
, contents
+ offset
+ 0);
4766 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 4);
4769 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
4770 contents
+ rel
->r_offset
);
4774 if (sgot
== NULL
|| sgotplt
== NULL
)
4778 off
= h
->got
.offset
;
4781 if (local_got_offsets
== NULL
)
4784 off
= local_got_offsets
[r_symndx
];
4787 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4788 if (r_type
== R_SH_TLS_IE_32
4789 && ! htab
->root
.dynamic_sections_created
)
4792 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
4793 sgot
->contents
+ off
);
4794 bfd_put_32 (output_bfd
, sh_elf_got_offset (htab
) + off
,
4795 contents
+ rel
->r_offset
);
4803 Elf_Internal_Rela outrel
;
4807 outrel
.r_offset
= (sgot
->output_section
->vma
4808 + sgot
->output_offset
+ off
);
4810 if (h
== NULL
|| h
->dynindx
== -1)
4815 dr_type
= (r_type
== R_SH_TLS_GD_32
? R_SH_TLS_DTPMOD32
:
4817 if (dr_type
== R_SH_TLS_TPOFF32
&& indx
== 0)
4818 outrel
.r_addend
= relocation
- dtpoff_base (info
);
4820 outrel
.r_addend
= 0;
4821 outrel
.r_info
= ELF32_R_INFO (indx
, dr_type
);
4822 loc
= srelgot
->contents
;
4823 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4824 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4826 if (r_type
== R_SH_TLS_GD_32
)
4830 bfd_put_32 (output_bfd
,
4831 relocation
- dtpoff_base (info
),
4832 sgot
->contents
+ off
+ 4);
4836 outrel
.r_info
= ELF32_R_INFO (indx
,
4838 outrel
.r_offset
+= 4;
4839 outrel
.r_addend
= 0;
4840 srelgot
->reloc_count
++;
4841 loc
+= sizeof (Elf32_External_Rela
);
4842 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4849 local_got_offsets
[r_symndx
] |= 1;
4852 if (off
>= (bfd_vma
) -2)
4855 if (r_type
== (int) ELF32_R_TYPE (rel
->r_info
))
4856 relocation
= sh_elf_got_offset (htab
) + off
;
4860 unsigned short insn
;
4862 /* GD->IE transition:
4863 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4864 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4865 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4867 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4868 nop; nop; bra 3f; nop; .align 2;
4869 1: .long x@TPOFF; 2:...; 3:. */
4871 offset
= rel
->r_offset
;
4875 /* xgettext:c-format */
4876 (_("%pB(%pA): offset in relocation for GD->IE translation is too small: %#" PRIx64
),
4877 input_bfd
, input_section
, (uint64_t) offset
);
4881 /* Size of GD instructions is 16 or 18. */
4883 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4884 if ((insn
& 0xff00) == 0xc700)
4886 BFD_ASSERT (offset
>= 2);
4888 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4891 BFD_ASSERT ((insn
& 0xff00) == 0xd400);
4893 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4894 bfd_put_16 (output_bfd
, insn
& 0xf0ff, contents
+ offset
);
4896 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 2);
4897 BFD_ASSERT ((insn
& 0xff00) == 0xc700);
4898 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 4);
4899 BFD_ASSERT ((insn
& 0xff00) == 0xd100);
4900 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 6);
4901 BFD_ASSERT (insn
== 0x310c);
4902 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 8);
4903 BFD_ASSERT (insn
== 0x410b);
4904 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 10);
4905 BFD_ASSERT (insn
== 0x34cc);
4907 bfd_put_16 (output_bfd
, 0x0412, contents
+ offset
+ 2);
4908 bfd_put_16 (output_bfd
, 0x00ce, contents
+ offset
+ 4);
4909 bfd_put_16 (output_bfd
, 0x304c, contents
+ offset
+ 6);
4910 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 8);
4911 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 10);
4913 bfd_put_32 (output_bfd
, sh_elf_got_offset (htab
) + off
,
4914 contents
+ rel
->r_offset
);
4919 addend
= rel
->r_addend
;
4921 goto final_link_relocate
;
4923 case R_SH_TLS_LD_32
:
4925 check_segment
[0] = check_segment
[1] = -1;
4926 if (! bfd_link_pic (info
))
4929 unsigned short insn
;
4931 /* LD->LE transition:
4932 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4933 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4934 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4936 stc gbr,r0; nop; nop; nop;
4937 nop; nop; bra 3f; ...; 3:. */
4939 offset
= rel
->r_offset
;
4943 /* xgettext:c-format */
4944 (_("%pB(%pA): offset in relocation for LD->LE translation is too small: %#" PRIx64
),
4945 input_bfd
, input_section
, (uint64_t) offset
);
4949 /* Size of LD instructions is 16 or 18. */
4951 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4952 if ((insn
& 0xff00) == 0xc700)
4954 BFD_ASSERT (offset
>= 2);
4956 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4959 BFD_ASSERT ((insn
& 0xff00) == 0xd400);
4960 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 2);
4961 BFD_ASSERT ((insn
& 0xff00) == 0xc700);
4962 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 4);
4963 BFD_ASSERT ((insn
& 0xff00) == 0xd100);
4964 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 6);
4965 BFD_ASSERT (insn
== 0x310c);
4966 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 8);
4967 BFD_ASSERT (insn
== 0x410b);
4968 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 10);
4969 BFD_ASSERT (insn
== 0x34cc);
4971 bfd_put_16 (output_bfd
, 0x0012, contents
+ offset
+ 0);
4972 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 2);
4973 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 4);
4974 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 6);
4975 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 8);
4976 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 10);
4981 if (sgot
== NULL
|| sgotplt
== NULL
)
4984 off
= htab
->tls_ldm_got
.offset
;
4989 Elf_Internal_Rela outrel
;
4992 outrel
.r_offset
= (sgot
->output_section
->vma
4993 + sgot
->output_offset
+ off
);
4994 outrel
.r_addend
= 0;
4995 outrel
.r_info
= ELF32_R_INFO (0, R_SH_TLS_DTPMOD32
);
4996 loc
= srelgot
->contents
;
4997 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4998 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4999 htab
->tls_ldm_got
.offset
|= 1;
5002 relocation
= sh_elf_got_offset (htab
) + off
;
5003 addend
= rel
->r_addend
;
5005 goto final_link_relocate
;
5007 case R_SH_TLS_LDO_32
:
5008 check_segment
[0] = check_segment
[1] = -1;
5009 if (! bfd_link_pic (info
))
5010 relocation
= tpoff (info
, relocation
);
5012 relocation
-= dtpoff_base (info
);
5014 addend
= rel
->r_addend
;
5015 goto final_link_relocate
;
5017 case R_SH_TLS_LE_32
:
5020 Elf_Internal_Rela outrel
;
5023 check_segment
[0] = check_segment
[1] = -1;
5025 if (!bfd_link_dll (info
))
5027 relocation
= tpoff (info
, relocation
);
5028 addend
= rel
->r_addend
;
5029 goto final_link_relocate
;
5034 sreloc
= _bfd_elf_get_dynamic_reloc_section
5035 (input_bfd
, input_section
, /*rela?*/ TRUE
);
5040 if (h
== NULL
|| h
->dynindx
== -1)
5045 outrel
.r_offset
= (input_section
->output_section
->vma
5046 + input_section
->output_offset
5048 outrel
.r_info
= ELF32_R_INFO (indx
, R_SH_TLS_TPOFF32
);
5050 outrel
.r_addend
= relocation
- dtpoff_base (info
);
5052 outrel
.r_addend
= 0;
5054 loc
= sreloc
->contents
;
5055 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
5056 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
5062 if (fdpic_p
&& check_segment
[0] != (unsigned) -1
5063 && check_segment
[0] != check_segment
[1])
5065 /* We don't want duplicate errors for undefined symbols. */
5066 if (!h
|| h
->root
.type
!= bfd_link_hash_undefined
)
5068 if (bfd_link_pic (info
))
5070 info
->callbacks
->einfo
5071 /* xgettext:c-format */
5072 (_("%X%C: relocation to \"%s\" references a different segment\n"),
5073 input_bfd
, input_section
, rel
->r_offset
, symname
);
5077 info
->callbacks
->einfo
5078 /* xgettext:c-format */
5079 (_("%C: warning: relocation to \"%s\" references a different segment\n"),
5080 input_bfd
, input_section
, rel
->r_offset
, symname
);
5083 elf_elfheader (output_bfd
)->e_flags
|= EF_SH_PIC
;
5086 if (r
!= bfd_reloc_ok
)
5091 case bfd_reloc_outofrange
:
5093 case bfd_reloc_overflow
:
5101 name
= (bfd_elf_string_from_elf_section
5102 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
5106 name
= bfd_section_name (sec
);
5108 (*info
->callbacks
->reloc_overflow
)
5109 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
5110 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
5120 /* This is a version of bfd_generic_get_relocated_section_contents
5121 which uses sh_elf_relocate_section. */
5124 sh_elf_get_relocated_section_contents (bfd
*output_bfd
,
5125 struct bfd_link_info
*link_info
,
5126 struct bfd_link_order
*link_order
,
5128 bfd_boolean relocatable
,
5131 Elf_Internal_Shdr
*symtab_hdr
;
5132 asection
*input_section
= link_order
->u
.indirect
.section
;
5133 bfd
*input_bfd
= input_section
->owner
;
5134 asection
**sections
= NULL
;
5135 Elf_Internal_Rela
*internal_relocs
= NULL
;
5136 Elf_Internal_Sym
*isymbuf
= NULL
;
5138 /* We only need to handle the case of relaxing, or of having a
5139 particular set of section contents, specially. */
5141 || elf_section_data (input_section
)->this_hdr
.contents
== NULL
)
5142 return bfd_generic_get_relocated_section_contents (output_bfd
, link_info
,
5147 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
5149 memcpy (data
, elf_section_data (input_section
)->this_hdr
.contents
,
5150 (size_t) input_section
->size
);
5152 if ((input_section
->flags
& SEC_RELOC
) != 0
5153 && input_section
->reloc_count
> 0)
5156 Elf_Internal_Sym
*isym
, *isymend
;
5159 internal_relocs
= (_bfd_elf_link_read_relocs
5160 (input_bfd
, input_section
, NULL
,
5161 (Elf_Internal_Rela
*) NULL
, FALSE
));
5162 if (internal_relocs
== NULL
)
5165 if (symtab_hdr
->sh_info
!= 0)
5167 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5168 if (isymbuf
== NULL
)
5169 isymbuf
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
5170 symtab_hdr
->sh_info
, 0,
5172 if (isymbuf
== NULL
)
5176 amt
= symtab_hdr
->sh_info
;
5177 amt
*= sizeof (asection
*);
5178 sections
= (asection
**) bfd_malloc (amt
);
5179 if (sections
== NULL
&& amt
!= 0)
5182 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
5183 for (isym
= isymbuf
, secpp
= sections
; isym
< isymend
; ++isym
, ++secpp
)
5187 if (isym
->st_shndx
== SHN_UNDEF
)
5188 isec
= bfd_und_section_ptr
;
5189 else if (isym
->st_shndx
== SHN_ABS
)
5190 isec
= bfd_abs_section_ptr
;
5191 else if (isym
->st_shndx
== SHN_COMMON
)
5192 isec
= bfd_com_section_ptr
;
5194 isec
= bfd_section_from_elf_index (input_bfd
, isym
->st_shndx
);
5199 if (! sh_elf_relocate_section (output_bfd
, link_info
, input_bfd
,
5200 input_section
, data
, internal_relocs
,
5205 if (symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5207 if (elf_section_data (input_section
)->relocs
!= internal_relocs
)
5208 free (internal_relocs
);
5215 if (symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5217 if (elf_section_data (input_section
)->relocs
!= internal_relocs
)
5218 free (internal_relocs
);
5222 /* Return the base VMA address which should be subtracted from real addresses
5223 when resolving @dtpoff relocation.
5224 This is PT_TLS segment p_vaddr. */
5227 dtpoff_base (struct bfd_link_info
*info
)
5229 /* If tls_sec is NULL, we should have signalled an error already. */
5230 if (elf_hash_table (info
)->tls_sec
== NULL
)
5232 return elf_hash_table (info
)->tls_sec
->vma
;
5235 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
5238 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
5240 /* If tls_sec is NULL, we should have signalled an error already. */
5241 if (elf_hash_table (info
)->tls_sec
== NULL
)
5243 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
5244 structure which has 2 pointer fields. */
5245 return (address
- elf_hash_table (info
)->tls_sec
->vma
5246 + align_power ((bfd_vma
) 8,
5247 elf_hash_table (info
)->tls_sec
->alignment_power
));
5251 sh_elf_gc_mark_hook (asection
*sec
,
5252 struct bfd_link_info
*info
,
5253 Elf_Internal_Rela
*rel
,
5254 struct elf_link_hash_entry
*h
,
5255 Elf_Internal_Sym
*sym
)
5258 switch (ELF32_R_TYPE (rel
->r_info
))
5260 case R_SH_GNU_VTINHERIT
:
5261 case R_SH_GNU_VTENTRY
:
5265 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5268 /* Copy the extra info we tack onto an elf_link_hash_entry. */
5271 sh_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
5272 struct elf_link_hash_entry
*dir
,
5273 struct elf_link_hash_entry
*ind
)
5275 struct elf_sh_link_hash_entry
*edir
, *eind
;
5277 edir
= (struct elf_sh_link_hash_entry
*) dir
;
5278 eind
= (struct elf_sh_link_hash_entry
*) ind
;
5280 edir
->gotplt_refcount
= eind
->gotplt_refcount
;
5281 eind
->gotplt_refcount
= 0;
5282 edir
->funcdesc
.refcount
+= eind
->funcdesc
.refcount
;
5283 eind
->funcdesc
.refcount
= 0;
5284 edir
->abs_funcdesc_refcount
+= eind
->abs_funcdesc_refcount
;
5285 eind
->abs_funcdesc_refcount
= 0;
5287 if (ind
->root
.type
== bfd_link_hash_indirect
5288 && dir
->got
.refcount
<= 0)
5290 edir
->got_type
= eind
->got_type
;
5291 eind
->got_type
= GOT_UNKNOWN
;
5294 if (ind
->root
.type
!= bfd_link_hash_indirect
5295 && dir
->dynamic_adjusted
)
5297 /* If called to transfer flags for a weakdef during processing
5298 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
5299 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
5300 if (dir
->versioned
!= versioned_hidden
)
5301 dir
->ref_dynamic
|= ind
->ref_dynamic
;
5302 dir
->ref_regular
|= ind
->ref_regular
;
5303 dir
->ref_regular_nonweak
|= ind
->ref_regular_nonweak
;
5304 dir
->needs_plt
|= ind
->needs_plt
;
5307 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
5311 sh_elf_optimized_tls_reloc (struct bfd_link_info
*info
, int r_type
,
5314 if (bfd_link_pic (info
))
5319 case R_SH_TLS_GD_32
:
5320 case R_SH_TLS_IE_32
:
5322 return R_SH_TLS_LE_32
;
5323 return R_SH_TLS_IE_32
;
5324 case R_SH_TLS_LD_32
:
5325 return R_SH_TLS_LE_32
;
5331 /* Look through the relocs for a section during the first phase.
5332 Since we don't do .gots or .plts, we just need to consider the
5333 virtual table relocs for gc. */
5336 sh_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
, asection
*sec
,
5337 const Elf_Internal_Rela
*relocs
)
5339 Elf_Internal_Shdr
*symtab_hdr
;
5340 struct elf_link_hash_entry
**sym_hashes
;
5341 struct elf_sh_link_hash_table
*htab
;
5342 const Elf_Internal_Rela
*rel
;
5343 const Elf_Internal_Rela
*rel_end
;
5345 unsigned int r_type
;
5346 enum got_type got_type
, old_got_type
;
5350 if (bfd_link_relocatable (info
))
5353 /* Don't do anything special with non-loaded, non-alloced sections.
5354 In particular, any relocs in such sections should not affect GOT
5355 and PLT reference counting (ie. we don't allow them to create GOT
5356 or PLT entries), there's no possibility or desire to optimize TLS
5357 relocs, and there's not much point in propagating relocs to shared
5358 libs that the dynamic linker won't relocate. */
5359 if ((sec
->flags
& SEC_ALLOC
) == 0)
5362 BFD_ASSERT (is_sh_elf (abfd
));
5364 symtab_hdr
= &elf_symtab_hdr (abfd
);
5365 sym_hashes
= elf_sym_hashes (abfd
);
5367 htab
= sh_elf_hash_table (info
);
5371 rel_end
= relocs
+ sec
->reloc_count
;
5372 for (rel
= relocs
; rel
< rel_end
; rel
++)
5374 struct elf_link_hash_entry
*h
;
5375 unsigned long r_symndx
;
5377 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5378 r_type
= ELF32_R_TYPE (rel
->r_info
);
5380 if (r_symndx
< symtab_hdr
->sh_info
)
5384 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5385 while (h
->root
.type
== bfd_link_hash_indirect
5386 || h
->root
.type
== bfd_link_hash_warning
)
5387 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5390 r_type
= sh_elf_optimized_tls_reloc (info
, r_type
, h
== NULL
);
5391 if (! bfd_link_pic (info
)
5392 && r_type
== R_SH_TLS_IE_32
5394 && h
->root
.type
!= bfd_link_hash_undefined
5395 && h
->root
.type
!= bfd_link_hash_undefweak
5396 && (h
->dynindx
== -1
5398 r_type
= R_SH_TLS_LE_32
;
5403 case R_SH_GOTOFFFUNCDESC
:
5404 case R_SH_GOTOFFFUNCDESC20
:
5406 case R_SH_GOTFUNCDESC
:
5407 case R_SH_GOTFUNCDESC20
:
5410 if (h
->dynindx
== -1)
5411 switch (ELF_ST_VISIBILITY (h
->other
))
5417 bfd_elf_link_record_dynamic_symbol (info
, h
);
5424 /* Some relocs require a global offset table. */
5425 if (htab
->root
.sgot
== NULL
)
5430 /* This may require an rofixup. */
5440 case R_SH_GOTFUNCDESC
:
5441 case R_SH_GOTFUNCDESC20
:
5442 case R_SH_GOTOFFFUNCDESC
:
5443 case R_SH_GOTOFFFUNCDESC20
:
5445 case R_SH_TLS_GD_32
:
5446 case R_SH_TLS_LD_32
:
5447 case R_SH_TLS_IE_32
:
5448 if (htab
->root
.dynobj
== NULL
)
5449 htab
->root
.dynobj
= abfd
;
5450 if (!create_got_section (htab
->root
.dynobj
, info
))
5461 /* This relocation describes the C++ object vtable hierarchy.
5462 Reconstruct it for later use during GC. */
5463 case R_SH_GNU_VTINHERIT
:
5464 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5468 /* This relocation describes which C++ vtable entries are actually
5469 used. Record for later use during GC. */
5470 case R_SH_GNU_VTENTRY
:
5471 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5475 case R_SH_TLS_IE_32
:
5476 if (bfd_link_pic (info
))
5477 info
->flags
|= DF_STATIC_TLS
;
5481 case R_SH_TLS_GD_32
:
5484 case R_SH_GOTFUNCDESC
:
5485 case R_SH_GOTFUNCDESC20
:
5489 got_type
= GOT_NORMAL
;
5491 case R_SH_TLS_GD_32
:
5492 got_type
= GOT_TLS_GD
;
5494 case R_SH_TLS_IE_32
:
5495 got_type
= GOT_TLS_IE
;
5497 case R_SH_GOTFUNCDESC
:
5498 case R_SH_GOTFUNCDESC20
:
5499 got_type
= GOT_FUNCDESC
;
5505 h
->got
.refcount
+= 1;
5506 old_got_type
= sh_elf_hash_entry (h
)->got_type
;
5510 bfd_signed_vma
*local_got_refcounts
;
5512 /* This is a global offset table entry for a local
5514 local_got_refcounts
= elf_local_got_refcounts (abfd
);
5515 if (local_got_refcounts
== NULL
)
5519 size
= symtab_hdr
->sh_info
;
5520 size
*= sizeof (bfd_signed_vma
);
5521 size
+= symtab_hdr
->sh_info
;
5522 local_got_refcounts
= ((bfd_signed_vma
*)
5523 bfd_zalloc (abfd
, size
));
5524 if (local_got_refcounts
== NULL
)
5526 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
5527 sh_elf_local_got_type (abfd
)
5528 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
5530 local_got_refcounts
[r_symndx
] += 1;
5531 old_got_type
= sh_elf_local_got_type (abfd
) [r_symndx
];
5534 /* If a TLS symbol is accessed using IE at least once,
5535 there is no point to use dynamic model for it. */
5536 if (old_got_type
!= got_type
&& old_got_type
!= GOT_UNKNOWN
5537 && (old_got_type
!= GOT_TLS_GD
|| got_type
!= GOT_TLS_IE
))
5539 if (old_got_type
== GOT_TLS_IE
&& got_type
== GOT_TLS_GD
)
5540 got_type
= GOT_TLS_IE
;
5543 if ((old_got_type
== GOT_FUNCDESC
|| got_type
== GOT_FUNCDESC
)
5544 && (old_got_type
== GOT_NORMAL
|| got_type
== GOT_NORMAL
))
5546 /* xgettext:c-format */
5547 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5548 abfd
, h
->root
.root
.string
);
5549 else if (old_got_type
== GOT_FUNCDESC
5550 || got_type
== GOT_FUNCDESC
)
5552 /* xgettext:c-format */
5553 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5554 abfd
, h
->root
.root
.string
);
5557 /* xgettext:c-format */
5558 (_("%pB: `%s' accessed both as normal and thread local symbol"),
5559 abfd
, h
->root
.root
.string
);
5564 if (old_got_type
!= got_type
)
5567 sh_elf_hash_entry (h
)->got_type
= got_type
;
5569 sh_elf_local_got_type (abfd
) [r_symndx
] = got_type
;
5574 case R_SH_TLS_LD_32
:
5575 sh_elf_hash_table(info
)->tls_ldm_got
.refcount
+= 1;
5579 case R_SH_GOTOFFFUNCDESC
:
5580 case R_SH_GOTOFFFUNCDESC20
:
5584 (_("%pB: Function descriptor relocation with non-zero addend"),
5591 union gotref
*local_funcdesc
;
5593 /* We need a function descriptor for a local symbol. */
5594 local_funcdesc
= sh_elf_local_funcdesc (abfd
);
5595 if (local_funcdesc
== NULL
)
5599 size
= symtab_hdr
->sh_info
* sizeof (union gotref
);
5600 local_funcdesc
= (union gotref
*) bfd_zalloc (abfd
, size
);
5601 if (local_funcdesc
== NULL
)
5603 sh_elf_local_funcdesc (abfd
) = local_funcdesc
;
5605 local_funcdesc
[r_symndx
].refcount
+= 1;
5607 if (r_type
== R_SH_FUNCDESC
)
5609 if (!bfd_link_pic (info
))
5610 htab
->srofixup
->size
+= 4;
5612 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
5617 sh_elf_hash_entry (h
)->funcdesc
.refcount
++;
5618 if (r_type
== R_SH_FUNCDESC
)
5619 sh_elf_hash_entry (h
)->abs_funcdesc_refcount
++;
5621 /* If there is a function descriptor reference, then
5622 there should not be any non-FDPIC references. */
5623 old_got_type
= sh_elf_hash_entry (h
)->got_type
;
5624 if (old_got_type
!= GOT_FUNCDESC
&& old_got_type
!= GOT_UNKNOWN
)
5626 if (old_got_type
== GOT_NORMAL
)
5628 /* xgettext:c-format */
5629 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5630 abfd
, h
->root
.root
.string
);
5633 /* xgettext:c-format */
5634 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5635 abfd
, h
->root
.root
.string
);
5641 /* If this is a local symbol, we resolve it directly without
5642 creating a procedure linkage table entry. */
5646 || ! bfd_link_pic (info
)
5648 || h
->dynindx
== -1)
5652 h
->plt
.refcount
+= 1;
5653 ((struct elf_sh_link_hash_entry
*) h
)->gotplt_refcount
+= 1;
5658 /* This symbol requires a procedure linkage table entry. We
5659 actually build the entry in adjust_dynamic_symbol,
5660 because this might be a case of linking PIC code which is
5661 never referenced by a dynamic object, in which case we
5662 don't need to generate a procedure linkage table entry
5665 /* If this is a local symbol, we resolve it directly without
5666 creating a procedure linkage table entry. */
5670 if (h
->forced_local
)
5674 h
->plt
.refcount
+= 1;
5679 if (h
!= NULL
&& ! bfd_link_pic (info
))
5682 h
->plt
.refcount
+= 1;
5685 /* If we are creating a shared library, and this is a reloc
5686 against a global symbol, or a non PC relative reloc
5687 against a local symbol, then we need to copy the reloc
5688 into the shared library. However, if we are linking with
5689 -Bsymbolic, we do not need to copy a reloc against a
5690 global symbol which is defined in an object we are
5691 including in the link (i.e., DEF_REGULAR is set). At
5692 this point we have not seen all the input files, so it is
5693 possible that DEF_REGULAR is not set now but will be set
5694 later (it is never cleared). We account for that
5695 possibility below by storing information in the
5696 dyn_relocs field of the hash table entry. A similar
5697 situation occurs when creating shared libraries and symbol
5698 visibility changes render the symbol local.
5700 If on the other hand, we are creating an executable, we
5701 may need to keep relocations for symbols satisfied by a
5702 dynamic library if we manage to avoid copy relocs for the
5704 if ((bfd_link_pic (info
)
5705 && (sec
->flags
& SEC_ALLOC
) != 0
5706 && (r_type
!= R_SH_REL32
5708 && (! info
->symbolic
5709 || h
->root
.type
== bfd_link_hash_defweak
5710 || !h
->def_regular
))))
5711 || (! bfd_link_pic (info
)
5712 && (sec
->flags
& SEC_ALLOC
) != 0
5714 && (h
->root
.type
== bfd_link_hash_defweak
5715 || !h
->def_regular
)))
5717 struct elf_dyn_relocs
*p
;
5718 struct elf_dyn_relocs
**head
;
5720 if (htab
->root
.dynobj
== NULL
)
5721 htab
->root
.dynobj
= abfd
;
5723 /* When creating a shared object, we must copy these
5724 reloc types into the output file. We create a reloc
5725 section in dynobj and make room for this reloc. */
5728 sreloc
= _bfd_elf_make_dynamic_reloc_section
5729 (sec
, htab
->root
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
5735 /* If this is a global symbol, we count the number of
5736 relocations we need for this symbol. */
5738 head
= &h
->dyn_relocs
;
5741 /* Track dynamic relocs needed for local syms too. */
5744 Elf_Internal_Sym
*isym
;
5746 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5751 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5755 vpp
= &elf_section_data (s
)->local_dynrel
;
5756 head
= (struct elf_dyn_relocs
**) vpp
;
5760 if (p
== NULL
|| p
->sec
!= sec
)
5762 size_t amt
= sizeof (*p
);
5763 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
5774 if (r_type
== R_SH_REL32
)
5778 /* Allocate the fixup regardless of whether we need a relocation.
5779 If we end up generating the relocation, we'll unallocate the
5781 if (htab
->fdpic_p
&& !bfd_link_pic (info
)
5782 && r_type
== R_SH_DIR32
5783 && (sec
->flags
& SEC_ALLOC
) != 0)
5784 htab
->srofixup
->size
+= 4;
5787 case R_SH_TLS_LE_32
:
5788 if (bfd_link_dll (info
))
5791 (_("%pB: TLS local exec code cannot be linked into shared objects"),
5798 case R_SH_TLS_LDO_32
:
5799 /* Nothing to do. */
5810 #ifndef sh_elf_set_mach_from_flags
5811 static unsigned int sh_ef_bfd_table
[] = { EF_SH_BFD_TABLE
};
5814 sh_elf_set_mach_from_flags (bfd
*abfd
)
5816 flagword flags
= elf_elfheader (abfd
)->e_flags
& EF_SH_MACH_MASK
;
5818 if (flags
>= ARRAY_SIZE (sh_ef_bfd_table
))
5821 if (sh_ef_bfd_table
[flags
] == 0)
5824 bfd_default_set_arch_mach (abfd
, bfd_arch_sh
, sh_ef_bfd_table
[flags
]);
5830 /* Reverse table lookup for sh_ef_bfd_table[].
5831 Given a bfd MACH value from archures.c
5832 return the equivalent ELF flags from the table.
5833 Return -1 if no match is found. */
5836 sh_elf_get_flags_from_mach (unsigned long mach
)
5838 int i
= ARRAY_SIZE (sh_ef_bfd_table
) - 1;
5841 if (sh_ef_bfd_table
[i
] == mach
)
5844 /* shouldn't get here */
5849 #endif /* not sh_elf_set_mach_from_flags */
5851 #ifndef sh_elf_copy_private_data
5852 /* Copy backend specific data from one object module to another */
5855 sh_elf_copy_private_data (bfd
* ibfd
, bfd
* obfd
)
5857 if (! is_sh_elf (ibfd
) || ! is_sh_elf (obfd
))
5860 if (! _bfd_elf_copy_private_bfd_data (ibfd
, obfd
))
5863 return sh_elf_set_mach_from_flags (obfd
);
5865 #endif /* not sh_elf_copy_private_data */
5867 #ifndef sh_elf_merge_private_data
5869 /* This function returns the ELF architecture number that
5870 corresponds to the given arch_sh* flags. */
5873 sh_find_elf_flags (unsigned int arch_set
)
5875 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5876 unsigned long bfd_mach
= sh_get_bfd_mach_from_arch_set (arch_set
);
5878 return sh_elf_get_flags_from_mach (bfd_mach
);
5881 /* Merge the architecture type of two BFD files, such that the
5882 resultant architecture supports all the features required
5883 by the two input BFDs.
5884 If the input BFDs are multually incompatible - i.e. one uses
5885 DSP while the other uses FPU - or there is no known architecture
5886 that fits the requirements then an error is emitted. */
5889 sh_merge_bfd_arch (bfd
*ibfd
, struct bfd_link_info
*info
)
5891 bfd
*obfd
= info
->output_bfd
;
5892 unsigned int old_arch
, new_arch
, merged_arch
;
5894 if (! _bfd_generic_verify_endian_match (ibfd
, info
))
5897 old_arch
= sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd
));
5898 new_arch
= sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd
));
5900 merged_arch
= SH_MERGE_ARCH_SET (old_arch
, new_arch
);
5902 if (!SH_VALID_CO_ARCH_SET (merged_arch
))
5905 /* xgettext:c-format */
5906 (_("%pB: uses %s instructions while previous modules "
5907 "use %s instructions"),
5909 SH_ARCH_SET_HAS_DSP (new_arch
) ? "dsp" : "floating point",
5910 SH_ARCH_SET_HAS_DSP (new_arch
) ? "floating point" : "dsp");
5911 bfd_set_error (bfd_error_bad_value
);
5914 else if (!SH_VALID_ARCH_SET (merged_arch
))
5917 /* xgettext:c-format */
5918 (_("internal error: merge of architecture '%s' with "
5919 "architecture '%s' produced unknown architecture"),
5920 bfd_printable_name (obfd
),
5921 bfd_printable_name (ibfd
));
5922 bfd_set_error (bfd_error_bad_value
);
5926 bfd_default_set_arch_mach (obfd
, bfd_arch_sh
,
5927 sh_get_bfd_mach_from_arch_set (merged_arch
));
5932 /* This routine initialises the elf flags when required and
5933 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
5936 sh_elf_merge_private_data (bfd
*ibfd
, struct bfd_link_info
*info
)
5938 bfd
*obfd
= info
->output_bfd
;
5940 /* FIXME: What should be checked when linking shared libraries? */
5941 if ((ibfd
->flags
& DYNAMIC
) != 0)
5944 if (! is_sh_elf (ibfd
) || ! is_sh_elf (obfd
))
5947 if (! elf_flags_init (obfd
))
5949 /* This happens when ld starts out with a 'blank' output file. */
5950 elf_flags_init (obfd
) = TRUE
;
5951 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
5952 sh_elf_set_mach_from_flags (obfd
);
5953 if (elf_elfheader (obfd
)->e_flags
& EF_SH_FDPIC
)
5954 elf_elfheader (obfd
)->e_flags
&= ~EF_SH_PIC
;
5957 if (! sh_merge_bfd_arch (ibfd
, info
))
5959 _bfd_error_handler (_("%pB: uses instructions which are incompatible "
5960 "with instructions used in previous modules"),
5962 bfd_set_error (bfd_error_bad_value
);
5966 elf_elfheader (obfd
)->e_flags
&= ~EF_SH_MACH_MASK
;
5967 elf_elfheader (obfd
)->e_flags
|=
5968 sh_elf_get_flags_from_mach (bfd_get_mach (obfd
));
5970 if (fdpic_object_p (ibfd
) != fdpic_object_p (obfd
))
5972 _bfd_error_handler (_("%pB: attempt to mix FDPIC and non-FDPIC objects"),
5974 bfd_set_error (bfd_error_bad_value
);
5980 #endif /* not sh_elf_merge_private_data */
5982 /* Override the generic function because we need to store sh_elf_obj_tdata
5983 as the specific tdata. We set also the machine architecture from flags
5987 sh_elf_object_p (bfd
*abfd
)
5989 if (! sh_elf_set_mach_from_flags (abfd
))
5992 return (((elf_elfheader (abfd
)->e_flags
& EF_SH_FDPIC
) != 0)
5993 == fdpic_object_p (abfd
));
5996 /* Finish up dynamic symbol handling. We set the contents of various
5997 dynamic sections here. */
6000 sh_elf_finish_dynamic_symbol (bfd
*output_bfd
, struct bfd_link_info
*info
,
6001 struct elf_link_hash_entry
*h
,
6002 Elf_Internal_Sym
*sym
)
6004 struct elf_sh_link_hash_table
*htab
;
6006 htab
= sh_elf_hash_table (info
);
6010 if (h
->plt
.offset
!= (bfd_vma
) -1)
6018 Elf_Internal_Rela rel
;
6020 const struct elf_sh_plt_info
*plt_info
;
6022 /* This symbol has an entry in the procedure linkage table. Set
6025 BFD_ASSERT (h
->dynindx
!= -1);
6027 splt
= htab
->root
.splt
;
6028 sgotplt
= htab
->root
.sgotplt
;
6029 srelplt
= htab
->root
.srelplt
;
6030 BFD_ASSERT (splt
!= NULL
&& sgotplt
!= NULL
&& srelplt
!= NULL
);
6032 /* Get the index in the procedure linkage table which
6033 corresponds to this symbol. This is the index of this symbol
6034 in all the symbols for which we are making plt entries. The
6035 first entry in the procedure linkage table is reserved. */
6036 plt_index
= get_plt_index (htab
->plt_info
, h
->plt
.offset
);
6038 plt_info
= htab
->plt_info
;
6039 if (plt_info
->short_plt
!= NULL
&& plt_index
<= MAX_SHORT_PLT
)
6040 plt_info
= plt_info
->short_plt
;
6042 /* Get the offset into the .got table of the entry that
6043 corresponds to this function. */
6045 /* The offset must be relative to the GOT symbol, twelve bytes
6046 before the end of .got.plt. Each descriptor is eight
6048 got_offset
= plt_index
* 8 + 12 - sgotplt
->size
;
6050 /* Each .got entry is 4 bytes. The first three are
6052 got_offset
= (plt_index
+ 3) * 4;
6055 if (bfd_link_pic (info
))
6056 got_offset
-= GOT_BIAS
;
6059 /* Fill in the entry in the procedure linkage table. */
6060 memcpy (splt
->contents
+ h
->plt
.offset
,
6061 plt_info
->symbol_entry
,
6062 plt_info
->symbol_entry_size
);
6064 if (bfd_link_pic (info
) || htab
->fdpic_p
)
6066 if (plt_info
->symbol_fields
.got20
)
6068 bfd_reloc_status_type r
;
6069 r
= install_movi20_field (output_bfd
, got_offset
,
6070 splt
->owner
, splt
, splt
->contents
,
6072 + plt_info
->symbol_fields
.got_entry
);
6073 BFD_ASSERT (r
== bfd_reloc_ok
);
6076 install_plt_field (output_bfd
, FALSE
, got_offset
,
6079 + plt_info
->symbol_fields
.got_entry
));
6083 BFD_ASSERT (!plt_info
->symbol_fields
.got20
);
6085 install_plt_field (output_bfd
, FALSE
,
6086 (sgotplt
->output_section
->vma
6087 + sgotplt
->output_offset
6091 + plt_info
->symbol_fields
.got_entry
));
6092 if (htab
->vxworks_p
)
6094 unsigned int reachable_plts
, plts_per_4k
;
6097 /* Divide the PLT into groups. The first group contains
6098 REACHABLE_PLTS entries and the other groups contain
6099 PLTS_PER_4K entries. Entries in the first group can
6100 branch directly to .plt; those in later groups branch
6101 to the last element of the previous group. */
6102 /* ??? It would be better to create multiple copies of
6103 the common resolver stub. */
6104 reachable_plts
= ((4096
6105 - plt_info
->plt0_entry_size
6106 - (plt_info
->symbol_fields
.plt
+ 4))
6107 / plt_info
->symbol_entry_size
) + 1;
6108 plts_per_4k
= (4096 / plt_info
->symbol_entry_size
);
6109 if (plt_index
< reachable_plts
)
6110 distance
= -(h
->plt
.offset
6111 + plt_info
->symbol_fields
.plt
);
6113 distance
= -(((plt_index
- reachable_plts
) % plts_per_4k
+ 1)
6114 * plt_info
->symbol_entry_size
);
6116 /* Install the 'bra' with this offset. */
6117 bfd_put_16 (output_bfd
,
6118 0xa000 | (0x0fff & ((distance
- 4) / 2)),
6121 + plt_info
->symbol_fields
.plt
));
6124 install_plt_field (output_bfd
, TRUE
,
6125 splt
->output_section
->vma
+ splt
->output_offset
,
6128 + plt_info
->symbol_fields
.plt
));
6131 /* Make got_offset relative to the start of .got.plt. */
6133 if (bfd_link_pic (info
))
6134 got_offset
+= GOT_BIAS
;
6137 got_offset
= plt_index
* 8;
6139 if (plt_info
->symbol_fields
.reloc_offset
!= MINUS_ONE
)
6140 install_plt_field (output_bfd
, FALSE
,
6141 plt_index
* sizeof (Elf32_External_Rela
),
6144 + plt_info
->symbol_fields
.reloc_offset
));
6146 /* Fill in the entry in the global offset table. */
6147 bfd_put_32 (output_bfd
,
6148 (splt
->output_section
->vma
6149 + splt
->output_offset
6151 + plt_info
->symbol_resolve_offset
),
6152 sgotplt
->contents
+ got_offset
);
6154 bfd_put_32 (output_bfd
,
6155 sh_elf_osec_to_segment (output_bfd
, splt
->output_section
),
6156 sgotplt
->contents
+ got_offset
+ 4);
6158 /* Fill in the entry in the .rela.plt section. */
6159 rel
.r_offset
= (sgotplt
->output_section
->vma
6160 + sgotplt
->output_offset
6163 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_FUNCDESC_VALUE
);
6165 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_JMP_SLOT
);
6168 rel
.r_addend
= GOT_BIAS
;
6170 loc
= srelplt
->contents
+ plt_index
* sizeof (Elf32_External_Rela
);
6171 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6173 if (htab
->vxworks_p
&& !bfd_link_pic (info
))
6175 /* Create the .rela.plt.unloaded relocations for this PLT entry.
6176 Begin by pointing LOC to the first such relocation. */
6177 loc
= (htab
->srelplt2
->contents
6178 + (plt_index
* 2 + 1) * sizeof (Elf32_External_Rela
));
6180 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
6181 for the PLT entry's pointer to the .got.plt entry. */
6182 rel
.r_offset
= (splt
->output_section
->vma
6183 + splt
->output_offset
6185 + plt_info
->symbol_fields
.got_entry
);
6186 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_SH_DIR32
);
6187 rel
.r_addend
= got_offset
;
6188 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6189 loc
+= sizeof (Elf32_External_Rela
);
6191 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
6192 the .got.plt entry, which initially points to .plt. */
6193 rel
.r_offset
= (sgotplt
->output_section
->vma
6194 + sgotplt
->output_offset
6196 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_SH_DIR32
);
6198 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
6201 if (!h
->def_regular
)
6203 /* Mark the symbol as undefined, rather than as defined in
6204 the .plt section. Leave the value alone. */
6205 sym
->st_shndx
= SHN_UNDEF
;
6209 if (h
->got
.offset
!= (bfd_vma
) -1
6210 && sh_elf_hash_entry (h
)->got_type
!= GOT_TLS_GD
6211 && sh_elf_hash_entry (h
)->got_type
!= GOT_TLS_IE
6212 && sh_elf_hash_entry (h
)->got_type
!= GOT_FUNCDESC
)
6216 Elf_Internal_Rela rel
;
6219 /* This symbol has an entry in the global offset table. Set it
6222 sgot
= htab
->root
.sgot
;
6223 srelgot
= htab
->root
.srelgot
;
6224 BFD_ASSERT (sgot
!= NULL
&& srelgot
!= NULL
);
6226 rel
.r_offset
= (sgot
->output_section
->vma
6227 + sgot
->output_offset
6228 + (h
->got
.offset
&~ (bfd_vma
) 1));
6230 /* If this is a static link, or it is a -Bsymbolic link and the
6231 symbol is defined locally or was forced to be local because
6232 of a version file, we just want to emit a RELATIVE reloc.
6233 The entry in the global offset table will already have been
6234 initialized in the relocate_section function. */
6235 if (bfd_link_pic (info
)
6236 && SYMBOL_REFERENCES_LOCAL (info
, h
))
6240 asection
*sec
= h
->root
.u
.def
.section
;
6242 = elf_section_data (sec
->output_section
)->dynindx
;
6244 rel
.r_info
= ELF32_R_INFO (dynindx
, R_SH_DIR32
);
6245 rel
.r_addend
= (h
->root
.u
.def
.value
6246 + h
->root
.u
.def
.section
->output_offset
);
6250 rel
.r_info
= ELF32_R_INFO (0, R_SH_RELATIVE
);
6251 rel
.r_addend
= (h
->root
.u
.def
.value
6252 + h
->root
.u
.def
.section
->output_section
->vma
6253 + h
->root
.u
.def
.section
->output_offset
);
6258 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
6259 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_GLOB_DAT
);
6263 loc
= srelgot
->contents
;
6264 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
6265 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6271 Elf_Internal_Rela rel
;
6274 /* This symbol needs a copy reloc. Set it up. */
6276 BFD_ASSERT (h
->dynindx
!= -1
6277 && (h
->root
.type
== bfd_link_hash_defined
6278 || h
->root
.type
== bfd_link_hash_defweak
));
6280 s
= bfd_get_linker_section (htab
->root
.dynobj
, ".rela.bss");
6281 BFD_ASSERT (s
!= NULL
);
6283 rel
.r_offset
= (h
->root
.u
.def
.value
6284 + h
->root
.u
.def
.section
->output_section
->vma
6285 + h
->root
.u
.def
.section
->output_offset
);
6286 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_COPY
);
6288 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
6289 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6292 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
6293 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
6295 if (h
== htab
->root
.hdynamic
6296 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
6297 sym
->st_shndx
= SHN_ABS
;
6302 /* Finish up the dynamic sections. */
6305 sh_elf_finish_dynamic_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
6307 struct elf_sh_link_hash_table
*htab
;
6311 htab
= sh_elf_hash_table (info
);
6315 sgotplt
= htab
->root
.sgotplt
;
6316 sdyn
= bfd_get_linker_section (htab
->root
.dynobj
, ".dynamic");
6318 if (htab
->root
.dynamic_sections_created
)
6321 Elf32_External_Dyn
*dyncon
, *dynconend
;
6323 BFD_ASSERT (sgotplt
!= NULL
&& sdyn
!= NULL
);
6325 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
6326 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
6327 for (; dyncon
< dynconend
; dyncon
++)
6329 Elf_Internal_Dyn dyn
;
6332 bfd_elf32_swap_dyn_in (htab
->root
.dynobj
, dyncon
, &dyn
);
6338 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
6339 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
6343 BFD_ASSERT (htab
->root
.hgot
!= NULL
);
6344 s
= htab
->root
.hgot
->root
.u
.def
.section
;
6345 dyn
.d_un
.d_ptr
= htab
->root
.hgot
->root
.u
.def
.value
6346 + s
->output_section
->vma
+ s
->output_offset
;
6347 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
6351 s
= htab
->root
.srelplt
->output_section
;
6352 BFD_ASSERT (s
!= NULL
);
6353 dyn
.d_un
.d_ptr
= s
->vma
;
6354 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
6358 s
= htab
->root
.srelplt
->output_section
;
6359 BFD_ASSERT (s
!= NULL
);
6360 dyn
.d_un
.d_val
= s
->size
;
6361 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
6366 /* Fill in the first entry in the procedure linkage table. */
6367 splt
= htab
->root
.splt
;
6368 if (splt
&& splt
->size
> 0 && htab
->plt_info
->plt0_entry
)
6372 memcpy (splt
->contents
,
6373 htab
->plt_info
->plt0_entry
,
6374 htab
->plt_info
->plt0_entry_size
);
6375 for (i
= 0; i
< ARRAY_SIZE (htab
->plt_info
->plt0_got_fields
); i
++)
6376 if (htab
->plt_info
->plt0_got_fields
[i
] != MINUS_ONE
)
6377 install_plt_field (output_bfd
, FALSE
,
6378 (sgotplt
->output_section
->vma
6379 + sgotplt
->output_offset
6382 + htab
->plt_info
->plt0_got_fields
[i
]));
6384 if (htab
->vxworks_p
)
6386 /* Finalize the .rela.plt.unloaded contents. */
6387 Elf_Internal_Rela rel
;
6390 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
6391 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
6392 loc
= htab
->srelplt2
->contents
;
6393 rel
.r_offset
= (splt
->output_section
->vma
6394 + splt
->output_offset
6395 + htab
->plt_info
->plt0_got_fields
[2]);
6396 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_SH_DIR32
);
6398 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6399 loc
+= sizeof (Elf32_External_Rela
);
6401 /* Fix up the remaining .rela.plt.unloaded relocations.
6402 They may have the wrong symbol index for _G_O_T_ or
6403 _P_L_T_ depending on the order in which symbols were
6405 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
6407 /* The PLT entry's pointer to the .got.plt slot. */
6408 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
6409 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
,
6411 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
6412 loc
+= sizeof (Elf32_External_Rela
);
6414 /* The .got.plt slot's pointer to .plt. */
6415 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
6416 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
,
6418 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
6419 loc
+= sizeof (Elf32_External_Rela
);
6423 /* UnixWare sets the entsize of .plt to 4, although that doesn't
6424 really seem like the right value. */
6425 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
6429 /* Fill in the first three entries in the global offset table. */
6430 if (sgotplt
&& sgotplt
->size
> 0 && !htab
->fdpic_p
)
6433 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgotplt
->contents
);
6435 bfd_put_32 (output_bfd
,
6436 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
6438 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgotplt
->contents
+ 4);
6439 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgotplt
->contents
+ 8);
6442 if (sgotplt
&& sgotplt
->size
> 0)
6443 elf_section_data (sgotplt
->output_section
)->this_hdr
.sh_entsize
= 4;
6445 /* At the very end of the .rofixup section is a pointer to the GOT. */
6446 if (htab
->fdpic_p
&& htab
->srofixup
!= NULL
)
6448 struct elf_link_hash_entry
*hgot
= htab
->root
.hgot
;
6449 bfd_vma got_value
= hgot
->root
.u
.def
.value
6450 + hgot
->root
.u
.def
.section
->output_section
->vma
6451 + hgot
->root
.u
.def
.section
->output_offset
;
6453 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
, got_value
);
6455 /* Make sure we allocated and generated the same number of fixups. */
6456 BFD_ASSERT (htab
->srofixup
->reloc_count
* 4 == htab
->srofixup
->size
);
6459 if (htab
->srelfuncdesc
)
6460 BFD_ASSERT (htab
->srelfuncdesc
->reloc_count
* sizeof (Elf32_External_Rela
)
6461 == htab
->srelfuncdesc
->size
);
6463 if (htab
->root
.srelgot
)
6464 BFD_ASSERT (htab
->root
.srelgot
->reloc_count
* sizeof (Elf32_External_Rela
)
6465 == htab
->root
.srelgot
->size
);
6470 static enum elf_reloc_type_class
6471 sh_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
6472 const asection
*rel_sec ATTRIBUTE_UNUSED
,
6473 const Elf_Internal_Rela
*rela
)
6475 switch ((int) ELF32_R_TYPE (rela
->r_info
))
6478 return reloc_class_relative
;
6480 return reloc_class_plt
;
6482 return reloc_class_copy
;
6484 return reloc_class_normal
;
6488 #if !defined SH_TARGET_ALREADY_DEFINED
6489 /* Support for Linux core dump NOTE sections. */
6492 elf32_shlin_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
6497 switch (note
->descsz
)
6502 case 168: /* Linux/SH */
6504 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
6507 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
6516 /* Make a ".reg/999" section. */
6517 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
6518 size
, note
->descpos
+ offset
);
6522 elf32_shlin_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
6524 switch (note
->descsz
)
6529 case 124: /* Linux/SH elf_prpsinfo */
6530 elf_tdata (abfd
)->core
->program
6531 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
6532 elf_tdata (abfd
)->core
->command
6533 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
6536 /* Note that for some reason, a spurious space is tacked
6537 onto the end of the args in some (at least one anyway)
6538 implementations, so strip it off if it exists. */
6541 char *command
= elf_tdata (abfd
)->core
->command
;
6542 int n
= strlen (command
);
6544 if (0 < n
&& command
[n
- 1] == ' ')
6545 command
[n
- 1] = '\0';
6550 #endif /* not SH_TARGET_ALREADY_DEFINED */
6553 /* Return address for Ith PLT stub in section PLT, for relocation REL
6554 or (bfd_vma) -1 if it should not be included. */
6557 sh_elf_plt_sym_val (bfd_vma i
, const asection
*plt
,
6558 const arelent
*rel ATTRIBUTE_UNUSED
)
6560 const struct elf_sh_plt_info
*plt_info
;
6562 plt_info
= get_plt_info (plt
->owner
, (plt
->owner
->flags
& DYNAMIC
) != 0);
6563 return plt
->vma
+ get_plt_offset (plt_info
, i
);
6566 /* Decide whether to attempt to turn absptr or lsda encodings in
6567 shared libraries into pcrel within the given input section. */
6570 sh_elf_use_relative_eh_frame (bfd
*input_bfd ATTRIBUTE_UNUSED
,
6571 struct bfd_link_info
*info
,
6572 asection
*eh_frame_section ATTRIBUTE_UNUSED
)
6574 struct elf_sh_link_hash_table
*htab
= sh_elf_hash_table (info
);
6576 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
6583 /* Adjust the contents of an eh_frame_hdr section before they're output. */
6586 sh_elf_encode_eh_address (bfd
*abfd
,
6587 struct bfd_link_info
*info
,
6588 asection
*osec
, bfd_vma offset
,
6589 asection
*loc_sec
, bfd_vma loc_offset
,
6592 struct elf_sh_link_hash_table
*htab
= sh_elf_hash_table (info
);
6593 struct elf_link_hash_entry
*h
;
6596 return _bfd_elf_encode_eh_address (abfd
, info
, osec
, offset
, loc_sec
,
6597 loc_offset
, encoded
);
6599 h
= htab
->root
.hgot
;
6600 BFD_ASSERT (h
&& h
->root
.type
== bfd_link_hash_defined
);
6602 if (! h
|| (sh_elf_osec_to_segment (abfd
, osec
)
6603 == sh_elf_osec_to_segment (abfd
, loc_sec
->output_section
)))
6604 return _bfd_elf_encode_eh_address (abfd
, info
, osec
, offset
,
6605 loc_sec
, loc_offset
, encoded
);
6607 BFD_ASSERT (sh_elf_osec_to_segment (abfd
, osec
)
6608 == (sh_elf_osec_to_segment
6609 (abfd
, h
->root
.u
.def
.section
->output_section
)));
6611 *encoded
= osec
->vma
+ offset
6612 - (h
->root
.u
.def
.value
6613 + h
->root
.u
.def
.section
->output_section
->vma
6614 + h
->root
.u
.def
.section
->output_offset
);
6616 return DW_EH_PE_datarel
| DW_EH_PE_sdata4
;
6619 #if !defined SH_TARGET_ALREADY_DEFINED
6620 #define TARGET_BIG_SYM sh_elf32_vec
6621 #define TARGET_BIG_NAME "elf32-sh"
6622 #define TARGET_LITTLE_SYM sh_elf32_le_vec
6623 #define TARGET_LITTLE_NAME "elf32-shl"
6626 #define ELF_ARCH bfd_arch_sh
6627 #define ELF_TARGET_ID SH_ELF_DATA
6628 #define ELF_MACHINE_CODE EM_SH
6629 #ifdef __QNXTARGET__
6630 #define ELF_MAXPAGESIZE 0x1000
6632 #define ELF_MAXPAGESIZE 0x80
6635 #define elf_symbol_leading_char '_'
6637 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6638 #define bfd_elf32_bfd_reloc_name_lookup \
6639 sh_elf_reloc_name_lookup
6640 #define elf_info_to_howto sh_elf_info_to_howto
6641 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6642 #define elf_backend_relocate_section sh_elf_relocate_section
6643 #define bfd_elf32_bfd_get_relocated_section_contents \
6644 sh_elf_get_relocated_section_contents
6645 #define bfd_elf32_mkobject sh_elf_mkobject
6646 #define elf_backend_object_p sh_elf_object_p
6647 #define bfd_elf32_bfd_copy_private_bfd_data \
6648 sh_elf_copy_private_data
6649 #define bfd_elf32_bfd_merge_private_bfd_data \
6650 sh_elf_merge_private_data
6652 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6653 #define elf_backend_check_relocs sh_elf_check_relocs
6654 #define elf_backend_copy_indirect_symbol \
6655 sh_elf_copy_indirect_symbol
6656 #define elf_backend_create_dynamic_sections \
6657 sh_elf_create_dynamic_sections
6658 #define bfd_elf32_bfd_link_hash_table_create \
6659 sh_elf_link_hash_table_create
6660 #define elf_backend_adjust_dynamic_symbol \
6661 sh_elf_adjust_dynamic_symbol
6662 #define elf_backend_always_size_sections \
6663 sh_elf_always_size_sections
6664 #define elf_backend_size_dynamic_sections \
6665 sh_elf_size_dynamic_sections
6666 #define elf_backend_omit_section_dynsym sh_elf_omit_section_dynsym
6667 #define elf_backend_finish_dynamic_symbol \
6668 sh_elf_finish_dynamic_symbol
6669 #define elf_backend_finish_dynamic_sections \
6670 sh_elf_finish_dynamic_sections
6671 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6672 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6673 #define elf_backend_can_make_relative_eh_frame \
6674 sh_elf_use_relative_eh_frame
6675 #define elf_backend_can_make_lsda_relative_eh_frame \
6676 sh_elf_use_relative_eh_frame
6677 #define elf_backend_encode_eh_address \
6678 sh_elf_encode_eh_address
6680 #define elf_backend_stack_align 8
6681 #define elf_backend_can_gc_sections 1
6682 #define elf_backend_can_refcount 1
6683 #define elf_backend_want_got_plt 1
6684 #define elf_backend_plt_readonly 1
6685 #define elf_backend_want_plt_sym 0
6686 #define elf_backend_got_header_size 12
6687 #define elf_backend_dtrel_excludes_plt 1
6689 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
6691 #if !defined SH_TARGET_ALREADY_DEFINED
6693 #include "elf32-target.h"
6695 /* NetBSD support. */
6696 #undef TARGET_BIG_SYM
6697 #define TARGET_BIG_SYM sh_elf32_nbsd_vec
6698 #undef TARGET_BIG_NAME
6699 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6700 #undef TARGET_LITTLE_SYM
6701 #define TARGET_LITTLE_SYM sh_elf32_nbsd_le_vec
6702 #undef TARGET_LITTLE_NAME
6703 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6704 #undef ELF_MAXPAGESIZE
6705 #define ELF_MAXPAGESIZE 0x10000
6706 #undef ELF_COMMONPAGESIZE
6707 #undef elf_symbol_leading_char
6708 #define elf_symbol_leading_char 0
6710 #define elf32_bed elf32_sh_nbsd_bed
6712 #include "elf32-target.h"
6715 /* Linux support. */
6716 #undef TARGET_BIG_SYM
6717 #define TARGET_BIG_SYM sh_elf32_linux_be_vec
6718 #undef TARGET_BIG_NAME
6719 #define TARGET_BIG_NAME "elf32-shbig-linux"
6720 #undef TARGET_LITTLE_SYM
6721 #define TARGET_LITTLE_SYM sh_elf32_linux_vec
6722 #undef TARGET_LITTLE_NAME
6723 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6724 #undef ELF_COMMONPAGESIZE
6725 #define ELF_COMMONPAGESIZE 0x1000
6727 #undef elf_backend_grok_prstatus
6728 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6729 #undef elf_backend_grok_psinfo
6730 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6732 #define elf32_bed elf32_sh_lin_bed
6734 #include "elf32-target.h"
6737 /* FDPIC support. */
6738 #undef TARGET_BIG_SYM
6739 #define TARGET_BIG_SYM sh_elf32_fdpic_be_vec
6740 #undef TARGET_BIG_NAME
6741 #define TARGET_BIG_NAME "elf32-shbig-fdpic"
6742 #undef TARGET_LITTLE_SYM
6743 #define TARGET_LITTLE_SYM sh_elf32_fdpic_le_vec
6744 #undef TARGET_LITTLE_NAME
6745 #define TARGET_LITTLE_NAME "elf32-sh-fdpic"
6748 #define elf32_bed elf32_sh_fd_bed
6750 #include "elf32-target.h"
6752 /* VxWorks support. */
6753 #undef TARGET_BIG_SYM
6754 #define TARGET_BIG_SYM sh_elf32_vxworks_vec
6755 #undef TARGET_BIG_NAME
6756 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6757 #undef TARGET_LITTLE_SYM
6758 #define TARGET_LITTLE_SYM sh_elf32_vxworks_le_vec
6759 #undef TARGET_LITTLE_NAME
6760 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6762 #define elf32_bed elf32_sh_vxworks_bed
6764 #undef elf_backend_want_plt_sym
6765 #define elf_backend_want_plt_sym 1
6766 #undef elf_symbol_leading_char
6767 #define elf_symbol_leading_char '_'
6768 #define elf_backend_want_got_underscore 1
6769 #undef elf_backend_grok_prstatus
6770 #undef elf_backend_grok_psinfo
6771 #undef elf_backend_add_symbol_hook
6772 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6773 #undef elf_backend_link_output_symbol_hook
6774 #define elf_backend_link_output_symbol_hook \
6775 elf_vxworks_link_output_symbol_hook
6776 #undef elf_backend_emit_relocs
6777 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6778 #undef elf_backend_final_write_processing
6779 #define elf_backend_final_write_processing \
6780 elf_vxworks_final_write_processing
6781 #undef ELF_MAXPAGESIZE
6782 #define ELF_MAXPAGESIZE 0x1000
6783 #undef ELF_COMMONPAGESIZE
6785 #include "elf32-target.h"
6787 #endif /* not SH_TARGET_ALREADY_DEFINED */