1 /* SPARC-specific support for 32-bit ELF
2 Copyright 1993 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
26 static CONST
struct reloc_howto_struct
*bfd_elf32_bfd_reloc_type_lookup
27 PARAMS ((bfd
*, bfd_reloc_code_real_type
));
28 static void elf_info_to_howto
29 PARAMS ((bfd
*, arelent
*, Elf_Internal_Rela
*));
30 static boolean elf32_sparc_create_dynamic_sections
31 PARAMS ((bfd
*, struct bfd_link_info
*));
32 static boolean elf32_sparc_create_got_section
33 PARAMS ((bfd
*, struct bfd_link_info
*));
34 static boolean elf32_sparc_check_relocs
35 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
36 const Elf_Internal_Rela
*));
37 static boolean elf32_sparc_adjust_dynamic_symbol
38 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
39 static boolean elf32_sparc_adjust_dynindx
40 PARAMS ((struct elf_link_hash_entry
*, PTR
));
41 static boolean elf32_sparc_size_dynamic_sections
42 PARAMS ((bfd
*, struct bfd_link_info
*));
43 static boolean elf32_sparc_relocate_section
44 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
45 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
46 static boolean elf32_sparc_finish_dynamic_symbol
47 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
49 static boolean elf32_sparc_finish_dynamic_sections
50 PARAMS ((bfd
*, struct bfd_link_info
*));
55 R_SPARC_8
, R_SPARC_16
, R_SPARC_32
,
56 R_SPARC_DISP8
, R_SPARC_DISP16
, R_SPARC_DISP32
,
57 R_SPARC_WDISP30
, R_SPARC_WDISP22
,
58 R_SPARC_HI22
, R_SPARC_22
,
59 R_SPARC_13
, R_SPARC_LO10
,
60 R_SPARC_GOT10
, R_SPARC_GOT13
, R_SPARC_GOT22
,
61 R_SPARC_PC10
, R_SPARC_PC22
,
64 R_SPARC_GLOB_DAT
, R_SPARC_JMP_SLOT
,
71 static CONST
char *CONST reloc_type_names
[] =
74 "R_SPARC_8", "R_SPARC_16", "R_SPARC_32",
75 "R_SPARC_DISP8", "R_SPARC_DISP16", "R_SPARC_DISP32",
76 "R_SPARC_WDISP30", "R_SPARC_WDISP22",
77 "R_SPARC_HI22", "R_SPARC_22",
78 "R_SPARC_13", "R_SPARC_LO10",
79 "R_SPARC_GOT10", "R_SPARC_GOT13", "R_SPARC_GOT22",
80 "R_SPARC_PC10", "R_SPARC_PC22",
83 "R_SPARC_GLOB_DAT", "R_SPARC_JMP_SLOT",
89 static reloc_howto_type elf_sparc_howto_table
[] =
91 HOWTO(R_SPARC_NONE
, 0,0, 0,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
,"R_SPARC_NONE", false,0,0x00000000,true),
92 HOWTO(R_SPARC_8
, 0,0, 8,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
,"R_SPARC_8", false,0,0x000000ff,true),
93 HOWTO(R_SPARC_16
, 0,1,16,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
,"R_SPARC_16", false,0,0x0000ffff,true),
94 HOWTO(R_SPARC_32
, 0,2,32,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
,"R_SPARC_32", false,0,0xffffffff,true),
95 HOWTO(R_SPARC_DISP8
, 0,0, 8,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
,"R_SPARC_DISP8", false,0,0x000000ff,true),
96 HOWTO(R_SPARC_DISP16
, 0,1,16,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
,"R_SPARC_DISP16", false,0,0x0000ffff,true),
97 HOWTO(R_SPARC_DISP32
, 0,2,32,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
,"R_SPARC_DISP32", false,0,0x00ffffff,true),
98 HOWTO(R_SPARC_WDISP30
, 2,2,30,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
,"R_SPARC_WDISP30", false,0,0x3fffffff,true),
99 HOWTO(R_SPARC_WDISP22
, 2,2,22,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
,"R_SPARC_WDISP22", false,0,0x003fffff,true),
100 HOWTO(R_SPARC_HI22
, 10,2,22,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
,"R_SPARC_HI22", false,0,0x003fffff,true),
101 HOWTO(R_SPARC_22
, 0,2,22,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
,"R_SPARC_22", false,0,0x003fffff,true),
102 HOWTO(R_SPARC_13
, 0,2,13,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
,"R_SPARC_13", false,0,0x00001fff,true),
103 HOWTO(R_SPARC_LO10
, 0,2,10,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
,"R_SPARC_LO10", false,0,0x000003ff,true),
104 HOWTO(R_SPARC_GOT10
, 0,2,10,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
,"R_SPARC_GOT10", false,0,0x000003ff,true),
105 HOWTO(R_SPARC_GOT13
, 0,2,13,false,0,complain_overflow_bitfield
,bfd_elf_generic_reloc
,"R_SPARC_GOT13", false,0,0x00001fff,true),
106 HOWTO(R_SPARC_GOT22
, 10,2,22,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
,"R_SPARC_GOT22", false,0,0x003fffff,true),
107 HOWTO(R_SPARC_PC10
, 0,2,10,true, 0,complain_overflow_dont
, bfd_elf_generic_reloc
,"R_SPARC_PC10", false,0,0x000003ff,true),
108 HOWTO(R_SPARC_PC22
, 10,2,22,true, 0,complain_overflow_bitfield
,bfd_elf_generic_reloc
,"R_SPARC_PC22", false,0,0x003fffff,true),
109 HOWTO(R_SPARC_WPLT30
, 2,2,30,true, 0,complain_overflow_signed
, bfd_elf_generic_reloc
,"R_SPARC_WPLT30", false,0,0x3fffffff,true),
110 HOWTO(R_SPARC_COPY
, 0,0,00,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
,"R_SPARC_COPY", false,0,0x00000000,true),
111 HOWTO(R_SPARC_GLOB_DAT
,0,0,00,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
,"R_SPARC_GLOB_DAT",false,0,0x00000000,true),
112 HOWTO(R_SPARC_JMP_SLOT
,0,0,00,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
,"R_SPARC_JMP_SLOT",false,0,0x00000000,true),
113 HOWTO(R_SPARC_RELATIVE
,0,0,00,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
,"R_SPARC_RELATIVE",false,0,0x00000000,true),
114 HOWTO(R_SPARC_UA32
, 0,0,00,false,0,complain_overflow_dont
, bfd_elf_generic_reloc
,"R_SPARC_UA32", false,0,0x00000000,true),
117 struct elf_reloc_map
{
118 unsigned char bfd_reloc_val
;
119 unsigned char elf_reloc_val
;
122 static CONST
struct elf_reloc_map sparc_reloc_map
[] =
124 { BFD_RELOC_NONE
, R_SPARC_NONE
, },
125 { BFD_RELOC_16
, R_SPARC_16
, },
126 { BFD_RELOC_8
, R_SPARC_8
},
127 { BFD_RELOC_8_PCREL
, R_SPARC_DISP8
},
128 { BFD_RELOC_CTOR
, R_SPARC_32
}, /* @@ Assumes 32 bits. */
129 { BFD_RELOC_32
, R_SPARC_32
},
130 { BFD_RELOC_32_PCREL
, R_SPARC_DISP32
},
131 { BFD_RELOC_HI22
, R_SPARC_HI22
},
132 { BFD_RELOC_LO10
, R_SPARC_LO10
, },
133 { BFD_RELOC_32_PCREL_S2
, R_SPARC_WDISP30
},
134 { BFD_RELOC_SPARC22
, R_SPARC_22
},
135 { BFD_RELOC_SPARC13
, R_SPARC_13
},
136 { BFD_RELOC_SPARC_GOT10
, R_SPARC_GOT10
},
137 { BFD_RELOC_SPARC_GOT13
, R_SPARC_GOT13
},
138 { BFD_RELOC_SPARC_GOT22
, R_SPARC_GOT22
},
139 { BFD_RELOC_SPARC_PC10
, R_SPARC_PC10
},
140 { BFD_RELOC_SPARC_PC22
, R_SPARC_PC22
},
141 { BFD_RELOC_SPARC_WPLT30
, R_SPARC_WPLT30
},
142 { BFD_RELOC_SPARC_COPY
, R_SPARC_COPY
},
143 { BFD_RELOC_SPARC_GLOB_DAT
, R_SPARC_GLOB_DAT
},
144 { BFD_RELOC_SPARC_JMP_SLOT
, R_SPARC_JMP_SLOT
},
145 { BFD_RELOC_SPARC_RELATIVE
, R_SPARC_RELATIVE
},
146 { BFD_RELOC_SPARC_WDISP22
, R_SPARC_WDISP22
},
147 /*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
150 static CONST
struct reloc_howto_struct
*
151 bfd_elf32_bfd_reloc_type_lookup (abfd
, code
)
153 bfd_reloc_code_real_type code
;
156 for (i
= 0; i
< sizeof (sparc_reloc_map
) / sizeof (struct elf_reloc_map
); i
++)
158 if (sparc_reloc_map
[i
].bfd_reloc_val
== code
)
159 return &elf_sparc_howto_table
[(int) sparc_reloc_map
[i
].elf_reloc_val
];
165 elf_info_to_howto (abfd
, cache_ptr
, dst
)
168 Elf_Internal_Rela
*dst
;
170 BFD_ASSERT (ELF32_R_TYPE(dst
->r_info
) < (unsigned int) R_SPARC_max
);
171 cache_ptr
->howto
= &elf_sparc_howto_table
[ELF32_R_TYPE(dst
->r_info
)];
175 /* Functions for the SPARC ELF linker. */
177 /* The name of the dynamic interpreter. This is put in the .interp
180 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
182 /* The nop opcode we use. */
184 #define SPARC_NOP 0x01000000
186 /* The size in bytes of an entry in the procedure linkage table. */
188 #define PLT_ENTRY_SIZE 12
190 /* The first four entries in a procedure linkage table are reserved,
191 and the initial contents are unimportant (we zero them out).
192 Subsequent entries look like this. See the SVR4 ABI SPARC
193 supplement to see how this works. */
195 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
196 #define PLT_ENTRY_WORD0 0x03000000
197 /* b,a .plt0. We fill in the offset later. */
198 #define PLT_ENTRY_WORD1 0x30800000
200 #define PLT_ENTRY_WORD2 SPARC_NOP
202 /* Create dynamic sections when linking against a dynamic object. */
205 elf32_sparc_create_dynamic_sections (abfd
, info
)
207 struct bfd_link_info
*info
;
210 register asection
*s
;
211 struct elf_link_hash_entry
*h
;
213 /* We need to create .plt, .rela.plt, .got, .dynbss, and .rela.bss
216 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
218 s
= bfd_make_section (abfd
, ".plt");
220 || ! bfd_set_section_flags (abfd
, s
, flags
| SEC_CODE
)
221 || ! bfd_set_section_alignment (abfd
, s
, 2))
224 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
227 if (! (_bfd_generic_link_add_one_symbol
228 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
, (bfd_vma
) 0,
229 (const char *) NULL
, false, get_elf_backend_data (abfd
)->collect
,
230 (struct bfd_link_hash_entry
**) &h
)))
232 h
->elf_link_hash_flags
|= ELF_LINK_HASH_DEF_REGULAR
;
233 h
->type
= STT_OBJECT
;
236 && ! bfd_elf32_link_record_dynamic_symbol (info
, h
))
239 s
= bfd_make_section (abfd
, ".rela.plt");
241 || ! bfd_set_section_flags (abfd
, s
, flags
| SEC_READONLY
)
242 || ! bfd_set_section_alignment (abfd
, s
, 2))
245 if (! elf32_sparc_create_got_section (abfd
, info
))
248 /* The .dynbss section is a place to put symbols which are defined
249 by dynamic objects, are referenced by regular objects, and are
250 not functions. We must allocate space for them in the process
251 image and use a R_SPARC_COPY reloc to tell the dynamic linker to
252 initialize them at run time. The linker script puts the .dynbss
253 section into the .bss section of the final image. */
254 s
= bfd_make_section (abfd
, ".dynbss");
256 || ! bfd_set_section_flags (abfd
, s
, SEC_ALLOC
))
259 /* The .rela.bss section holds copy relocs. */
262 s
= bfd_make_section (abfd
, ".rela.bss");
264 || ! bfd_set_section_flags (abfd
, s
, flags
| SEC_READONLY
)
265 || ! bfd_set_section_alignment (abfd
, s
, 2))
272 /* Create the .got section to hold the global offset table. */
275 elf32_sparc_create_got_section (abfd
, info
)
277 struct bfd_link_info
*info
;
279 register asection
*s
;
280 struct elf_link_hash_entry
*h
;
282 /* This function may be called more than once. */
283 if (bfd_get_section_by_name (abfd
, ".got") != NULL
)
286 s
= bfd_make_section (abfd
, ".got");
288 || ! bfd_set_section_flags (abfd
, s
,
289 (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
291 || ! bfd_set_section_alignment (abfd
, s
, 2))
294 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
295 section. We don't do this in the linker script because we don't
296 want to define the symbol if we are not creating a global offset
297 table. FIXME: The Solaris linker puts _GLOBAL_OFFSET_TABLE_ at
298 the start of the .got section, but when using the small PIC model
299 the .got is accessed using a signed 13 bit offset. Shouldn't
300 _GLOBAL_OFFSET_TABLE_ be located at .got + 4096? */
302 if (! (_bfd_generic_link_add_one_symbol
303 (info
, abfd
, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL
, s
, (bfd_vma
) 0,
304 (const char *) NULL
, false, get_elf_backend_data (abfd
)->collect
,
305 (struct bfd_link_hash_entry
**) &h
)))
307 h
->elf_link_hash_flags
|= ELF_LINK_HASH_DEF_REGULAR
;
308 h
->type
= STT_OBJECT
;
311 && ! bfd_elf32_link_record_dynamic_symbol (info
, h
))
314 /* The first global offset table entry is reserved. */
320 /* Look through the relocs for a section during the first phase, and
321 allocate space in the global offset table or procedure linkage
325 elf32_sparc_check_relocs (abfd
, info
, sec
, relocs
)
327 struct bfd_link_info
*info
;
329 const Elf_Internal_Rela
*relocs
;
332 Elf_Internal_Shdr
*symtab_hdr
;
333 struct elf_link_hash_entry
**sym_hashes
;
334 bfd_vma
*local_got_offsets
;
335 const Elf_Internal_Rela
*rel
;
336 const Elf_Internal_Rela
*rel_end
;
341 if (info
->relocateable
)
344 dynobj
= elf_hash_table (info
)->dynobj
;
345 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
346 sym_hashes
= elf_sym_hashes (abfd
);
347 local_got_offsets
= elf_local_got_offsets (abfd
);
353 rel_end
= relocs
+ sec
->reloc_count
;
354 for (rel
= relocs
; rel
< rel_end
; rel
++)
357 struct elf_link_hash_entry
*h
;
359 r_symndx
= ELF32_R_SYM (rel
->r_info
);
360 if (r_symndx
< symtab_hdr
->sh_info
)
363 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
365 switch (ELF32_R_TYPE (rel
->r_info
))
370 /* This symbol requires a global offset table entry. */
374 /* Create the .got section. */
375 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
376 if (! elf32_sparc_create_got_section (dynobj
, info
))
382 sgot
= bfd_get_section_by_name (dynobj
, ".got");
383 BFD_ASSERT (sgot
!= NULL
);
387 && (h
!= NULL
|| info
->shared
))
389 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
392 srelgot
= bfd_make_section (dynobj
, ".rela.got");
394 || ! bfd_set_section_flags (dynobj
, srelgot
,
400 || ! bfd_set_section_alignment (dynobj
, srelgot
, 2))
407 if (h
->got_offset
!= (bfd_vma
) -1)
409 /* We have already allocated space in the .got. */
412 h
->got_offset
= sgot
->_raw_size
;
414 /* Make sure this symbol is output as a dynamic symbol. */
415 if (h
->dynindx
== -1)
417 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
421 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
425 /* This is a global offset table entry for a local
427 if (local_got_offsets
== NULL
)
432 size
= symtab_hdr
->sh_info
* sizeof (bfd_vma
);
433 local_got_offsets
= (bfd_vma
*) bfd_alloc (abfd
, size
);
434 if (local_got_offsets
== NULL
)
436 bfd_set_error (bfd_error_no_memory
);
439 elf_local_got_offsets (abfd
) = local_got_offsets
;
440 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
441 local_got_offsets
[i
] = (bfd_vma
) -1;
443 if (local_got_offsets
[r_symndx
] != (bfd_vma
) -1)
445 /* We have already allocated space in the .got. */
448 local_got_offsets
[r_symndx
] = sgot
->_raw_size
;
452 /* If we are generating a shared object, we need to
453 output a R_SPARC_RELATIVE reloc so that the
454 dynamic linker can adjust this GOT entry. */
455 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
459 sgot
->_raw_size
+= 4;
464 /* This symbol requires a procedure linkage table entry. We
465 actually build the entry in adjust_dynamic_symbol,
466 because this might be a case of linking PIC code without
467 linking in any dynamic objects, in which case we don't
468 need to generate a procedure linkage table after all. */
472 /* It does not make sense to have a procedure linkage
473 table entry for a local symbol. */
474 bfd_set_error (bfd_error_bad_value
);
478 /* Make sure this symbol is output as a dynamic symbol. */
479 if (h
->dynindx
== -1)
481 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
485 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
492 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
501 case R_SPARC_WDISP30
:
502 case R_SPARC_WDISP22
:
509 && (sec
->flags
& SEC_ALLOC
) != 0)
511 /* When creating a shared object, we must copy these
512 relocs into the output file. We create a reloc
513 section in dynobj and make room for the reloc. */
518 name
= (elf_string_from_elf_section
520 elf_elfheader (abfd
)->e_shstrndx
,
521 elf_section_data (sec
)->rel_hdr
.sh_name
));
525 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
526 && strcmp (bfd_get_section_name (abfd
, sec
),
529 sreloc
= bfd_get_section_by_name (dynobj
, name
);
532 sreloc
= bfd_make_section (dynobj
, name
);
534 || ! bfd_set_section_flags (dynobj
, sreloc
,
540 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
545 sreloc
->_raw_size
+= sizeof (Elf32_External_Rela
);
558 /* Adjust a symbol defined by a dynamic object and referenced by a
559 regular object. The current definition is in some section of the
560 dynamic object, but we're not including those sections. We have to
561 change the definition to something the rest of the link can
565 elf32_sparc_adjust_dynamic_symbol (info
, h
)
566 struct bfd_link_info
*info
;
567 struct elf_link_hash_entry
*h
;
571 unsigned int power_of_two
;
573 dynobj
= elf_hash_table (info
)->dynobj
;
575 /* Make sure we know what is going on here. */
576 BFD_ASSERT (dynobj
!= NULL
577 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
578 || ((h
->elf_link_hash_flags
579 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
580 && (h
->elf_link_hash_flags
581 & ELF_LINK_HASH_REF_REGULAR
) != 0
582 && (h
->elf_link_hash_flags
583 & ELF_LINK_HASH_DEF_REGULAR
) == 0
584 && h
->root
.type
== bfd_link_hash_defined
585 && (bfd_get_flavour (h
->root
.u
.def
.section
->owner
)
586 == bfd_target_elf_flavour
)
587 && (elf_elfheader (h
->root
.u
.def
.section
->owner
)->e_type
589 && h
->root
.u
.def
.section
->output_section
== NULL
)));
591 /* If this is a function, put it in the procedure linkage table. We
592 will fill in the contents of the procedure linkage table later
593 (although we could actually do it here). */
594 if (h
->type
== STT_FUNC
595 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
597 if (! elf_hash_table (info
)->dynamic_sections_created
)
599 /* This case can occur if we saw a WPLT30 reloc in an input
600 file, but none of the input files were dynamic objects.
601 In such a case, we don't actually need to build a
602 procedure linkage table, and we can just do a WDISP30
604 BFD_ASSERT ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0);
608 s
= bfd_get_section_by_name (dynobj
, ".plt");
609 BFD_ASSERT (s
!= NULL
);
611 /* The first four entries in .plt are reserved. */
612 if (s
->_raw_size
== 0)
613 s
->_raw_size
= 4 * PLT_ENTRY_SIZE
;
615 /* The procedure linkage table has a maximum size. */
616 if (s
->_raw_size
>= 0x400000)
618 bfd_set_error (bfd_error_bad_value
);
622 /* If this symbol is not defined in a regular file, and we are
623 not generating a shared library, then set the symbol to this
624 location in the .plt. This is required to make function
625 pointers compare as equal between the normal executable and
626 the shared library. */
628 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
630 h
->root
.u
.def
.section
= s
;
631 h
->root
.u
.def
.value
= s
->_raw_size
;
634 h
->plt_offset
= s
->_raw_size
;
636 /* Make room for this entry. */
637 s
->_raw_size
+= PLT_ENTRY_SIZE
;
639 /* We also need to make an entry in the .rela.plt section. */
641 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
642 BFD_ASSERT (s
!= NULL
);
643 s
->_raw_size
+= sizeof (Elf32_External_Rela
);
648 /* If this is a weak symbol, and there is a real definition, the
649 processor independent code will have arranged for us to see the
650 real definition first, and we can just use the same value. */
651 if (h
->weakdef
!= NULL
)
653 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
);
654 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
655 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
659 /* This is a reference to a symbol defined by a dynamic object which
660 is not a function. */
662 /* If we are creating a shared library, we must presume that the
663 only references to the symbol are via the global offset table.
664 For such cases we need not do anything here; the relocations will
665 be handled correctly by relocate_section. */
669 /* We must allocate the symbol in our .dynbss section, which will
670 become part of the .bss section of the executable. There will be
671 an entry for this symbol in the .dynsym section. The dynamic
672 object will contain position independent code, so all references
673 from the dynamic object to this symbol will go through the global
674 offset table. The dynamic linker will use the .dynsym entry to
675 determine the address it must put in the global offset table, so
676 both the dynamic object and the regular object will refer to the
677 same memory location for the variable. */
679 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
680 BFD_ASSERT (s
!= NULL
);
682 /* If the symbol is currently defined in the .bss section of the
683 dynamic object, then it is OK to simply initialize it to zero.
684 If the symbol is in some other section, we must generate a
685 R_SPARC_COPY reloc to tell the dynamic linker to copy the initial
686 value out of the dynamic object and into the runtime process
687 image. We need to remember the offset into the .rel.bss section
688 we are going to use. */
689 if ((h
->root
.u
.def
.section
->flags
& SEC_LOAD
) != 0)
693 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
694 BFD_ASSERT (srel
!= NULL
);
695 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
696 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
699 /* We need to figure out the alignment required for this symbol. I
700 have no idea how ELF linkers handle this. */
701 power_of_two
= bfd_log2 (h
->size
);
702 if (power_of_two
> 3)
705 /* Apply the required alignment. */
706 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
707 (bfd_size_type
) (1 << power_of_two
));
708 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
710 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
714 /* Define the symbol as being at this point in the section. */
715 h
->root
.u
.def
.section
= s
;
716 h
->root
.u
.def
.value
= s
->_raw_size
;
718 /* Increment the section size to make room for the symbol. */
719 s
->_raw_size
+= h
->size
;
724 /* Set the sizes of the dynamic sections. */
727 elf32_sparc_size_dynamic_sections (output_bfd
, info
)
729 struct bfd_link_info
*info
;
735 dynobj
= elf_hash_table (info
)->dynobj
;
736 BFD_ASSERT (dynobj
!= NULL
);
738 if (elf_hash_table (info
)->dynamic_sections_created
)
740 /* Set the contents of the .interp section to the interpreter. */
743 s
= bfd_get_section_by_name (dynobj
, ".interp");
744 BFD_ASSERT (s
!= NULL
);
745 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
746 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
749 /* Make space for the trailing nop in .plt. */
750 s
= bfd_get_section_by_name (dynobj
, ".plt");
751 BFD_ASSERT (s
!= NULL
);
752 if (s
->_raw_size
> 0)
757 /* We may have created entries in the .rela.got section.
758 However, if we are not creating the dynamic sections, we will
759 not actually use these entries. Reset the size of .rela.got,
760 which will cause it to get stripped from the output file
762 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
767 /* The check_relocs and adjust_dynamic_symbol entry points have
768 determined the sizes of the various dynamic sections. Allocate
771 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
776 if ((s
->flags
& SEC_IN_MEMORY
) == 0)
779 /* It's OK to base decisions on the section name, because none
780 of the dynobj section names depend upon the input files. */
781 name
= bfd_get_section_name (dynobj
, s
);
785 if (strncmp (name
, ".rela", 5) == 0)
787 if (s
->_raw_size
== 0)
789 /* If we don't need this section, strip it from the
790 output file. This is to handle .rela.bss and
791 .rel.plt. We must create it in
792 create_dynamic_sections, because it must be created
793 before the linker maps input sections to output
794 sections. The linker does that before
795 adjust_dynamic_symbol is called, and it is that
796 function which decides whether anything needs to go
797 into these sections. */
804 /* If this relocation section applies to a read only
805 section, then we probably need a DT_TEXTREL entry. */
806 target
= bfd_get_section_by_name (output_bfd
, name
+ 5);
808 && (target
->flags
& SEC_READONLY
) != 0)
811 /* We use the reloc_count field as a counter if we need
812 to copy relocs into the output file. */
816 else if (strcmp (name
, ".plt") != 0
817 && strcmp (name
, ".got") != 0)
819 /* It's not one of our sections, so don't allocate space. */
827 for (spp
= &s
->output_section
->owner
->sections
;
828 *spp
!= s
->output_section
;
831 *spp
= s
->output_section
->next
;
832 --s
->output_section
->owner
->section_count
;
837 /* Allocate memory for the section contents. */
838 s
->contents
= (bfd_byte
*) bfd_alloc (dynobj
, s
->_raw_size
);
839 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
841 bfd_set_error (bfd_error_no_memory
);
846 if (elf_hash_table (info
)->dynamic_sections_created
)
848 /* Add some entries to the .dynamic section. We fill in the
849 values later, in elf32_sparc_finish_dynamic_sections, but we
850 must add the entries now so that we get the correct size for
851 the .dynamic section. The DT_DEBUG entry is filled in by the
852 dynamic linker and used by the debugger. */
855 if (! bfd_elf32_add_dynamic_entry (info
, DT_DEBUG
, 0))
859 if (! bfd_elf32_add_dynamic_entry (info
, DT_PLTGOT
, 0)
860 || ! bfd_elf32_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
861 || ! bfd_elf32_add_dynamic_entry (info
, DT_PLTREL
, DT_RELA
)
862 || ! bfd_elf32_add_dynamic_entry (info
, DT_JMPREL
, 0)
863 || ! bfd_elf32_add_dynamic_entry (info
, DT_RELA
, 0)
864 || ! bfd_elf32_add_dynamic_entry (info
, DT_RELASZ
, 0)
865 || ! bfd_elf32_add_dynamic_entry (info
, DT_RELAENT
,
866 sizeof (Elf32_External_Rela
)))
871 if (! bfd_elf32_add_dynamic_entry (info
, DT_TEXTREL
, 0))
876 /* If we are generating a shared library, we generate a section
877 symbol for each output section. These are local symbols, which
878 means that they must come first in the dynamic symbol table.
879 That means we must increment the dynamic symbol index of every
880 other dynamic symbol. */
885 c
= bfd_count_sections (output_bfd
);
886 elf_link_hash_traverse (elf_hash_table (info
),
887 elf32_sparc_adjust_dynindx
,
889 elf_hash_table (info
)->dynsymcount
+= c
;
891 for (i
= 1, s
= output_bfd
->sections
; s
!= NULL
; s
= s
->next
, i
++)
893 elf_section_data (s
)->dynindx
= i
;
894 /* These symbols will have no names, so we don't need to
895 fiddle with dynstr_index. */
902 /* Increment the index of a dynamic symbol by a given amount. Called
903 via elf_link_hash_traverse. */
906 elf32_sparc_adjust_dynindx (h
, cparg
)
907 struct elf_link_hash_entry
*h
;
910 int *cp
= (int *) cparg
;
912 if (h
->dynindx
!= -1)
917 /* Relocate a SPARC ELF section. */
920 elf32_sparc_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
921 contents
, relocs
, local_syms
, local_sections
)
923 struct bfd_link_info
*info
;
925 asection
*input_section
;
927 Elf_Internal_Rela
*relocs
;
928 Elf_Internal_Sym
*local_syms
;
929 asection
**local_sections
;
932 Elf_Internal_Shdr
*symtab_hdr
;
933 struct elf_link_hash_entry
**sym_hashes
;
934 bfd_vma
*local_got_offsets
;
938 Elf_Internal_Rela
*rel
;
939 Elf_Internal_Rela
*relend
;
941 dynobj
= elf_hash_table (info
)->dynobj
;
942 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
943 sym_hashes
= elf_sym_hashes (input_bfd
);
944 local_got_offsets
= elf_local_got_offsets (input_bfd
);
951 relend
= relocs
+ input_section
->reloc_count
;
952 for (; rel
< relend
; rel
++)
955 const reloc_howto_type
*howto
;
957 struct elf_link_hash_entry
*h
;
958 Elf_Internal_Sym
*sym
;
961 bfd_reloc_status_type r
;
963 r_type
= ELF32_R_TYPE (rel
->r_info
);
964 if (r_type
< 0 || r_type
>= (int) R_SPARC_max
)
966 bfd_set_error (bfd_error_bad_value
);
969 howto
= elf_sparc_howto_table
+ r_type
;
971 r_symndx
= ELF32_R_SYM (rel
->r_info
);
973 if (info
->relocateable
)
975 /* This is a relocateable link. We don't have to change
976 anything, unless the reloc is against a section symbol,
977 in which case we have to adjust according to where the
978 section symbol winds up in the output section. */
979 if (r_symndx
< symtab_hdr
->sh_info
)
981 sym
= local_syms
+ r_symndx
;
982 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
984 sec
= local_sections
[r_symndx
];
985 rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
992 /* This is a final link. */
996 if (r_symndx
< symtab_hdr
->sh_info
)
998 sym
= local_syms
+ r_symndx
;
999 sec
= local_sections
[r_symndx
];
1000 relocation
= (sec
->output_section
->vma
1001 + sec
->output_offset
1006 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1007 if (h
->root
.type
== bfd_link_hash_defined
)
1009 sec
= h
->root
.u
.def
.section
;
1010 if ((r_type
== R_SPARC_WPLT30
1011 && h
->plt_offset
!= (bfd_vma
) -1)
1012 || ((r_type
== R_SPARC_GOT10
1013 || r_type
== R_SPARC_GOT13
1014 || r_type
== R_SPARC_GOT22
)
1015 && elf_hash_table (info
)->dynamic_sections_created
)
1017 && (input_section
->flags
& SEC_ALLOC
) != 0
1018 && (r_type
== R_SPARC_8
1019 || r_type
== R_SPARC_16
1020 || r_type
== R_SPARC_32
1021 || r_type
== R_SPARC_DISP8
1022 || r_type
== R_SPARC_DISP16
1023 || r_type
== R_SPARC_DISP32
1024 || r_type
== R_SPARC_WDISP30
1025 || r_type
== R_SPARC_WDISP22
1026 || r_type
== R_SPARC_HI22
1027 || r_type
== R_SPARC_22
1028 || r_type
== R_SPARC_13
1029 || r_type
== R_SPARC_LO10
1030 || r_type
== R_SPARC_UA32
1031 || ((r_type
== R_SPARC_PC10
1032 || r_type
== R_SPARC_PC22
)
1033 && strcmp (h
->root
.root
.string
,
1034 "_GLOBAL_OFFSET_TABLE_") != 0))))
1036 /* In these cases, we don't need the relocation
1037 value. We check specially because in some
1038 obscure cases sec->output_section will be NULL. */
1042 relocation
= (h
->root
.u
.def
.value
1043 + sec
->output_section
->vma
1044 + sec
->output_offset
);
1046 else if (h
->root
.type
== bfd_link_hash_weak
)
1048 else if (info
->shared
)
1052 if (! ((*info
->callbacks
->undefined_symbol
)
1053 (info
, h
->root
.root
.string
, input_bfd
,
1054 input_section
, rel
->r_offset
)))
1065 /* Relocation is to the entry for this symbol in the global
1069 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1070 BFD_ASSERT (sgot
!= NULL
);
1077 off
= h
->got_offset
;
1078 BFD_ASSERT (off
!= (bfd_vma
) -1);
1080 if (! elf_hash_table (info
)->dynamic_sections_created
)
1082 /* This is actually a static link. We must
1083 initialize this entry in the global offset table.
1084 Since the offset must always be a multiple of 4,
1085 we use the least significant bit to record
1086 whether we have initialized it already.
1088 When doing a dynamic link, we create a .rela.got
1089 relocation entry to initialize the value. This
1090 is done in the finish_dynamic_symbol routine. */
1095 bfd_put_32 (output_bfd
, relocation
,
1096 sgot
->contents
+ off
);
1101 relocation
= sgot
->output_offset
+ off
;
1107 BFD_ASSERT (local_got_offsets
!= NULL
1108 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
1110 off
= local_got_offsets
[r_symndx
];
1112 /* The offset must always be a multiple of 4. We use
1113 the least significant bit to record whether we have
1114 already processed this entry. */
1119 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1124 Elf_Internal_Rela outrel
;
1126 /* We need to generate a R_SPARC_RELATIVE reloc
1127 for the dynamic linker. */
1128 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1129 BFD_ASSERT (srelgot
!= NULL
);
1131 outrel
.r_offset
= (sgot
->output_section
->vma
1132 + sgot
->output_offset
1134 outrel
.r_info
= ELF32_R_INFO (0, R_SPARC_RELATIVE
);
1135 outrel
.r_addend
= 0;
1136 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1137 (((Elf32_External_Rela
*)
1139 + srelgot
->reloc_count
));
1140 ++srelgot
->reloc_count
;
1143 local_got_offsets
[r_symndx
] |= 1;
1146 relocation
= sgot
->output_offset
+ off
;
1151 case R_SPARC_WPLT30
:
1152 /* Relocation is to the entry for this symbol in the
1153 procedure linkage table. */
1154 BFD_ASSERT (h
!= NULL
);
1156 if (h
->plt_offset
== (bfd_vma
) -1)
1158 /* We didn't make a PLT entry for this symbol. This
1159 happens when statically linking PIC code. */
1165 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1166 BFD_ASSERT (splt
!= NULL
);
1169 relocation
= (splt
->output_section
->vma
1170 + splt
->output_offset
1177 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
1184 case R_SPARC_DISP16
:
1185 case R_SPARC_DISP32
:
1186 case R_SPARC_WDISP30
:
1187 case R_SPARC_WDISP22
:
1194 && (input_section
->flags
& SEC_ALLOC
) != 0)
1196 Elf_Internal_Rela outrel
;
1198 /* When generating a shared object, these relocations
1199 are copied into the output file to be resolved at run
1206 name
= (elf_string_from_elf_section
1208 elf_elfheader (input_bfd
)->e_shstrndx
,
1209 elf_section_data (input_section
)->rel_hdr
.sh_name
));
1213 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
1214 && strcmp (bfd_get_section_name (input_bfd
,
1218 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1219 BFD_ASSERT (sreloc
!= NULL
);
1222 outrel
.r_offset
= (rel
->r_offset
1223 + input_section
->output_section
->vma
1224 + input_section
->output_offset
);
1227 BFD_ASSERT (h
->dynindx
!= -1);
1228 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1229 outrel
.r_addend
= rel
->r_addend
;
1233 if (r_type
== R_SPARC_32
)
1235 outrel
.r_info
= ELF32_R_INFO (0, R_SPARC_RELATIVE
);
1236 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1242 sym
= local_syms
+ r_symndx
;
1244 BFD_ASSERT (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
);
1246 sec
= local_sections
[r_symndx
];
1247 if (sec
!= NULL
&& bfd_is_abs_section (sec
))
1249 else if (sec
== NULL
|| sec
->owner
== NULL
)
1251 bfd_set_error (bfd_error_bad_value
);
1258 osec
= sec
->output_section
;
1259 indx
= elf_section_data (osec
)->dynindx
;
1264 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
1265 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1269 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1270 (((Elf32_External_Rela
*)
1272 + sreloc
->reloc_count
));
1273 ++sreloc
->reloc_count
;
1275 /* This reloc will be computed at runtime, so there's no
1276 need to do anything now. */
1284 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1285 contents
, rel
->r_offset
,
1286 relocation
, rel
->r_addend
);
1288 if (r
!= bfd_reloc_ok
)
1293 case bfd_reloc_outofrange
:
1295 case bfd_reloc_overflow
:
1300 name
= h
->root
.root
.string
;
1303 name
= elf_string_from_elf_section (input_bfd
,
1304 symtab_hdr
->sh_link
,
1309 name
= bfd_section_name (input_bfd
, sec
);
1311 if (! ((*info
->callbacks
->reloc_overflow
)
1312 (info
, name
, howto
->name
, (bfd_vma
) 0,
1313 input_bfd
, input_section
, rel
->r_offset
)))
1324 /* Finish up dynamic symbol handling. We set the contents of various
1325 dynamic sections here. */
1328 elf32_sparc_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1330 struct bfd_link_info
*info
;
1331 struct elf_link_hash_entry
*h
;
1332 Elf_Internal_Sym
*sym
;
1336 dynobj
= elf_hash_table (info
)->dynobj
;
1338 if (h
->plt_offset
!= (bfd_vma
) -1)
1342 Elf_Internal_Rela rela
;
1344 /* This symbol has an entry in the procedure linkage table. Set
1347 BFD_ASSERT (h
->dynindx
!= -1);
1349 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1350 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1351 BFD_ASSERT (splt
!= NULL
&& srela
!= NULL
);
1353 /* Fill in the entry in the procedure linkage table. */
1354 bfd_put_32 (output_bfd
,
1355 PLT_ENTRY_WORD0
+ h
->plt_offset
,
1356 splt
->contents
+ h
->plt_offset
);
1357 bfd_put_32 (output_bfd
,
1359 + (((- (h
->plt_offset
+ 4)) >> 2) & 0x3fffff)),
1360 splt
->contents
+ h
->plt_offset
+ 4);
1361 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
1362 splt
->contents
+ h
->plt_offset
+ 8);
1364 /* Fill in the entry in the .rela.plt section. */
1365 rela
.r_offset
= (splt
->output_section
->vma
1366 + splt
->output_offset
1368 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SPARC_JMP_SLOT
);
1370 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1371 ((Elf32_External_Rela
*) srela
->contents
1372 + h
->plt_offset
/ PLT_ENTRY_SIZE
- 4));
1374 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1376 /* Mark the symbol as undefined, rather than as defined in
1377 the .plt section. Leave the value alone. */
1378 sym
->st_shndx
= SHN_UNDEF
;
1382 if (h
->got_offset
!= (bfd_vma
) -1)
1386 Elf_Internal_Rela rela
;
1388 /* This symbol has an entry in the global offset table. Set it
1391 BFD_ASSERT (h
->dynindx
!= -1);
1393 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1394 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
1395 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1397 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got_offset
);
1399 rela
.r_offset
= (sgot
->output_section
->vma
1400 + sgot
->output_offset
1402 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SPARC_GLOB_DAT
);
1404 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1405 ((Elf32_External_Rela
*) srela
->contents
1406 + srela
->reloc_count
));
1407 ++srela
->reloc_count
;
1410 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
1413 Elf_Internal_Rela rela
;
1415 /* This symbols needs a copy reloc. Set it up. */
1417 BFD_ASSERT (h
->dynindx
!= -1);
1419 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
1421 BFD_ASSERT (s
!= NULL
);
1423 rela
.r_offset
= (h
->root
.u
.def
.value
1424 + h
->root
.u
.def
.section
->output_section
->vma
1425 + h
->root
.u
.def
.section
->output_offset
);
1426 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SPARC_COPY
);
1428 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1429 ((Elf32_External_Rela
*) s
->contents
1434 /* Mark some specially defined symbols as absolute. */
1435 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1436 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
1437 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
1438 sym
->st_shndx
= SHN_ABS
;
1443 /* Finish up the dynamic sections. */
1446 elf32_sparc_finish_dynamic_sections (output_bfd
, info
)
1448 struct bfd_link_info
*info
;
1454 dynobj
= elf_hash_table (info
)->dynobj
;
1456 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
1458 if (elf_hash_table (info
)->dynamic_sections_created
)
1461 Elf32_External_Dyn
*dyncon
, *dynconend
;
1463 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1464 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
1466 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1467 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
1468 for (; dyncon
< dynconend
; dyncon
++)
1470 Elf_Internal_Dyn dyn
;
1474 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
1478 case DT_PLTGOT
: name
= ".plt"; size
= false; break;
1479 case DT_PLTRELSZ
: name
= ".rela.plt"; size
= true; break;
1480 case DT_JMPREL
: name
= ".rela.plt"; size
= false; break;
1481 default: name
= NULL
; size
= false; break;
1488 s
= bfd_get_section_by_name (output_bfd
, name
);
1494 dyn
.d_un
.d_ptr
= s
->vma
;
1497 if (s
->_cooked_size
!= 0)
1498 dyn
.d_un
.d_val
= s
->_cooked_size
;
1500 dyn
.d_un
.d_val
= s
->_raw_size
;
1503 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1507 /* Clear the first four entries in the procedure linkage table,
1508 and put a nop in the last four bytes. */
1509 if (splt
->_raw_size
> 0)
1511 memset (splt
->contents
, 0, 4 * PLT_ENTRY_SIZE
);
1512 bfd_put_32 (output_bfd
, SPARC_NOP
,
1513 splt
->contents
+ splt
->_raw_size
- 4);
1516 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
1520 /* Set the first entry in the global offset table to the address of
1521 the dynamic section. */
1522 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1523 BFD_ASSERT (sgot
!= NULL
);
1524 if (sgot
->_raw_size
> 0)
1527 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
1529 bfd_put_32 (output_bfd
,
1530 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
1534 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1540 Elf_Internal_Sym sym
;
1542 /* Set up the section symbols for the output sections. */
1544 sdynsym
= bfd_get_section_by_name (dynobj
, ".dynsym");
1545 BFD_ASSERT (sdynsym
!= NULL
);
1549 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
1552 for (s
= output_bfd
->sections
; s
!= NULL
; s
= s
->next
)
1556 sym
.st_value
= s
->vma
;
1558 indx
= elf_section_data (s
)->this_idx
;
1559 BFD_ASSERT (indx
> 0);
1560 sym
.st_shndx
= indx
;
1562 bfd_elf32_swap_symbol_out (output_bfd
, &sym
,
1563 ((Elf32_External_Sym
*) sdynsym
->contents
1564 + elf_section_data (s
)->dynindx
));
1567 /* Set the sh_info field of the output .dynsym section to the
1568 index of the first global symbol. */
1569 elf_section_data (sdynsym
->output_section
)->this_hdr
.sh_info
=
1570 bfd_count_sections (output_bfd
) + 1;
1576 #define TARGET_BIG_SYM bfd_elf32_sparc_vec
1577 #define TARGET_BIG_NAME "elf32-sparc"
1578 #define ELF_ARCH bfd_arch_sparc
1579 #define ELF_MACHINE_CODE EM_SPARC
1580 #define ELF_MAXPAGESIZE 0x10000
1581 #define elf_backend_create_dynamic_sections \
1582 elf32_sparc_create_dynamic_sections
1583 #define elf_backend_check_relocs elf32_sparc_check_relocs
1584 #define elf_backend_adjust_dynamic_symbol \
1585 elf32_sparc_adjust_dynamic_symbol
1586 #define elf_backend_size_dynamic_sections \
1587 elf32_sparc_size_dynamic_sections
1588 #define elf_backend_relocate_section elf32_sparc_relocate_section
1589 #define elf_backend_finish_dynamic_symbol \
1590 elf32_sparc_finish_dynamic_symbol
1591 #define elf_backend_finish_dynamic_sections \
1592 elf32_sparc_finish_dynamic_sections
1594 #include "elf32-target.h"