1 /* SPARC-specific support for 32-bit ELF
2 Copyright 1993, 1994, 1995 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 reloc_howto_type
*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_signed
, 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 reloc_howto_type
*
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 BFD_ASSERT ((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 || h
->root
.type
== bfd_link_hash_defweak
)
586 && (h
->root
.u
.def
.section
->owner
== NULL
587 || ((elf_elfheader (h
->root
.u
.def
.section
->owner
)->e_type
589 && (bfd_get_flavour (h
->root
.u
.def
.section
->owner
)
590 == bfd_target_elf_flavour
)
591 && h
->root
.u
.def
.section
->output_section
== NULL
))));
593 /* If this is a function, put it in the procedure linkage table. We
594 will fill in the contents of the procedure linkage table later
595 (although we could actually do it here). */
596 if (h
->type
== STT_FUNC
597 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
599 if (! elf_hash_table (info
)->dynamic_sections_created
)
601 /* This case can occur if we saw a WPLT30 reloc in an input
602 file, but none of the input files were dynamic objects.
603 In such a case, we don't actually need to build a
604 procedure linkage table, and we can just do a WDISP30
606 BFD_ASSERT ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0);
610 s
= bfd_get_section_by_name (dynobj
, ".plt");
611 BFD_ASSERT (s
!= NULL
);
613 /* The first four entries in .plt are reserved. */
614 if (s
->_raw_size
== 0)
615 s
->_raw_size
= 4 * PLT_ENTRY_SIZE
;
617 /* The procedure linkage table has a maximum size. */
618 if (s
->_raw_size
>= 0x400000)
620 bfd_set_error (bfd_error_bad_value
);
624 /* If this symbol is not defined in a regular file, and we are
625 not generating a shared library, then set the symbol to this
626 location in the .plt. This is required to make function
627 pointers compare as equal between the normal executable and
628 the shared library. */
630 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
632 h
->root
.u
.def
.section
= s
;
633 h
->root
.u
.def
.value
= s
->_raw_size
;
636 h
->plt_offset
= s
->_raw_size
;
638 /* Make room for this entry. */
639 s
->_raw_size
+= PLT_ENTRY_SIZE
;
641 /* We also need to make an entry in the .rela.plt section. */
643 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
644 BFD_ASSERT (s
!= NULL
);
645 s
->_raw_size
+= sizeof (Elf32_External_Rela
);
650 /* If this is a weak symbol, and there is a real definition, the
651 processor independent code will have arranged for us to see the
652 real definition first, and we can just use the same value. */
653 if (h
->weakdef
!= NULL
)
655 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
656 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
657 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
658 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
662 /* This is a reference to a symbol defined by a dynamic object which
663 is not a function. */
665 /* If we are creating a shared library, we must presume that the
666 only references to the symbol are via the global offset table.
667 For such cases we need not do anything here; the relocations will
668 be handled correctly by relocate_section. */
672 /* We must allocate the symbol in our .dynbss section, which will
673 become part of the .bss section of the executable. There will be
674 an entry for this symbol in the .dynsym section. The dynamic
675 object will contain position independent code, so all references
676 from the dynamic object to this symbol will go through the global
677 offset table. The dynamic linker will use the .dynsym entry to
678 determine the address it must put in the global offset table, so
679 both the dynamic object and the regular object will refer to the
680 same memory location for the variable. */
682 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
683 BFD_ASSERT (s
!= NULL
);
685 /* If the symbol is currently defined in the .bss section of the
686 dynamic object, then it is OK to simply initialize it to zero.
687 If the symbol is in some other section, we must generate a
688 R_SPARC_COPY reloc to tell the dynamic linker to copy the initial
689 value out of the dynamic object and into the runtime process
690 image. We need to remember the offset into the .rel.bss section
691 we are going to use. */
692 if ((h
->root
.u
.def
.section
->flags
& SEC_LOAD
) != 0)
696 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
697 BFD_ASSERT (srel
!= NULL
);
698 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
699 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
702 /* We need to figure out the alignment required for this symbol. I
703 have no idea how ELF linkers handle this. */
704 power_of_two
= bfd_log2 (h
->size
);
705 if (power_of_two
> 3)
708 /* Apply the required alignment. */
709 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
710 (bfd_size_type
) (1 << power_of_two
));
711 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
713 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
717 /* Define the symbol as being at this point in the section. */
718 h
->root
.u
.def
.section
= s
;
719 h
->root
.u
.def
.value
= s
->_raw_size
;
721 /* Increment the section size to make room for the symbol. */
722 s
->_raw_size
+= h
->size
;
727 /* Set the sizes of the dynamic sections. */
730 elf32_sparc_size_dynamic_sections (output_bfd
, info
)
732 struct bfd_link_info
*info
;
739 dynobj
= elf_hash_table (info
)->dynobj
;
740 BFD_ASSERT (dynobj
!= NULL
);
742 if (elf_hash_table (info
)->dynamic_sections_created
)
744 /* Set the contents of the .interp section to the interpreter. */
747 s
= bfd_get_section_by_name (dynobj
, ".interp");
748 BFD_ASSERT (s
!= NULL
);
749 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
750 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
753 /* Make space for the trailing nop in .plt. */
754 s
= bfd_get_section_by_name (dynobj
, ".plt");
755 BFD_ASSERT (s
!= NULL
);
756 if (s
->_raw_size
> 0)
761 /* We may have created entries in the .rela.got section.
762 However, if we are not creating the dynamic sections, we will
763 not actually use these entries. Reset the size of .rela.got,
764 which will cause it to get stripped from the output file
766 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
771 /* The check_relocs and adjust_dynamic_symbol entry points have
772 determined the sizes of the various dynamic sections. Allocate
776 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
781 if ((s
->flags
& SEC_IN_MEMORY
) == 0)
784 /* It's OK to base decisions on the section name, because none
785 of the dynobj section names depend upon the input files. */
786 name
= bfd_get_section_name (dynobj
, s
);
790 if (strncmp (name
, ".rela", 5) == 0)
792 if (s
->_raw_size
== 0)
794 /* If we don't need this section, strip it from the
795 output file. This is to handle .rela.bss and
796 .rel.plt. We must create it in
797 create_dynamic_sections, because it must be created
798 before the linker maps input sections to output
799 sections. The linker does that before
800 adjust_dynamic_symbol is called, and it is that
801 function which decides whether anything needs to go
802 into these sections. */
809 /* If this relocation section applies to a read only
810 section, then we probably need a DT_TEXTREL entry. */
811 target
= bfd_get_section_by_name (output_bfd
, name
+ 5);
813 && (target
->flags
& SEC_READONLY
) != 0)
816 if (strcmp (name
, ".rela.plt") == 0)
819 /* We use the reloc_count field as a counter if we need
820 to copy relocs into the output file. */
824 else if (strcmp (name
, ".plt") != 0
825 && strcmp (name
, ".got") != 0)
827 /* It's not one of our sections, so don't allocate space. */
835 for (spp
= &s
->output_section
->owner
->sections
;
836 *spp
!= s
->output_section
;
839 *spp
= s
->output_section
->next
;
840 --s
->output_section
->owner
->section_count
;
845 /* Allocate memory for the section contents. */
846 s
->contents
= (bfd_byte
*) bfd_alloc (dynobj
, s
->_raw_size
);
847 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
849 bfd_set_error (bfd_error_no_memory
);
854 if (elf_hash_table (info
)->dynamic_sections_created
)
856 /* Add some entries to the .dynamic section. We fill in the
857 values later, in elf32_sparc_finish_dynamic_sections, but we
858 must add the entries now so that we get the correct size for
859 the .dynamic section. The DT_DEBUG entry is filled in by the
860 dynamic linker and used by the debugger. */
863 if (! bfd_elf32_add_dynamic_entry (info
, DT_DEBUG
, 0))
867 if (! bfd_elf32_add_dynamic_entry (info
, DT_PLTGOT
, 0))
872 if (! bfd_elf32_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
873 || ! bfd_elf32_add_dynamic_entry (info
, DT_PLTREL
, DT_RELA
)
874 || ! bfd_elf32_add_dynamic_entry (info
, DT_JMPREL
, 0))
878 if (! bfd_elf32_add_dynamic_entry (info
, DT_RELA
, 0)
879 || ! bfd_elf32_add_dynamic_entry (info
, DT_RELASZ
, 0)
880 || ! bfd_elf32_add_dynamic_entry (info
, DT_RELAENT
,
881 sizeof (Elf32_External_Rela
)))
886 if (! bfd_elf32_add_dynamic_entry (info
, DT_TEXTREL
, 0))
891 /* If we are generating a shared library, we generate a section
892 symbol for each output section. These are local symbols, which
893 means that they must come first in the dynamic symbol table.
894 That means we must increment the dynamic symbol index of every
895 other dynamic symbol. */
900 c
= bfd_count_sections (output_bfd
);
901 elf_link_hash_traverse (elf_hash_table (info
),
902 elf32_sparc_adjust_dynindx
,
904 elf_hash_table (info
)->dynsymcount
+= c
;
906 for (i
= 1, s
= output_bfd
->sections
; s
!= NULL
; s
= s
->next
, i
++)
908 elf_section_data (s
)->dynindx
= i
;
909 /* These symbols will have no names, so we don't need to
910 fiddle with dynstr_index. */
917 /* Increment the index of a dynamic symbol by a given amount. Called
918 via elf_link_hash_traverse. */
921 elf32_sparc_adjust_dynindx (h
, cparg
)
922 struct elf_link_hash_entry
*h
;
925 int *cp
= (int *) cparg
;
927 if (h
->dynindx
!= -1)
932 /* Relocate a SPARC ELF section. */
935 elf32_sparc_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
936 contents
, relocs
, local_syms
, local_sections
)
938 struct bfd_link_info
*info
;
940 asection
*input_section
;
942 Elf_Internal_Rela
*relocs
;
943 Elf_Internal_Sym
*local_syms
;
944 asection
**local_sections
;
947 Elf_Internal_Shdr
*symtab_hdr
;
948 struct elf_link_hash_entry
**sym_hashes
;
949 bfd_vma
*local_got_offsets
;
953 Elf_Internal_Rela
*rel
;
954 Elf_Internal_Rela
*relend
;
956 dynobj
= elf_hash_table (info
)->dynobj
;
957 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
958 sym_hashes
= elf_sym_hashes (input_bfd
);
959 local_got_offsets
= elf_local_got_offsets (input_bfd
);
966 relend
= relocs
+ input_section
->reloc_count
;
967 for (; rel
< relend
; rel
++)
970 reloc_howto_type
*howto
;
972 struct elf_link_hash_entry
*h
;
973 Elf_Internal_Sym
*sym
;
976 bfd_reloc_status_type r
;
978 r_type
= ELF32_R_TYPE (rel
->r_info
);
979 if (r_type
< 0 || r_type
>= (int) R_SPARC_max
)
981 bfd_set_error (bfd_error_bad_value
);
984 howto
= elf_sparc_howto_table
+ r_type
;
986 r_symndx
= ELF32_R_SYM (rel
->r_info
);
988 if (info
->relocateable
)
990 /* This is a relocateable link. We don't have to change
991 anything, unless the reloc is against a section symbol,
992 in which case we have to adjust according to where the
993 section symbol winds up in the output section. */
994 if (r_symndx
< symtab_hdr
->sh_info
)
996 sym
= local_syms
+ r_symndx
;
997 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
999 sec
= local_sections
[r_symndx
];
1000 rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
1007 /* This is a final link. */
1011 if (r_symndx
< symtab_hdr
->sh_info
)
1013 sym
= local_syms
+ r_symndx
;
1014 sec
= local_sections
[r_symndx
];
1015 relocation
= (sec
->output_section
->vma
1016 + sec
->output_offset
1021 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1022 if (h
->root
.type
== bfd_link_hash_defined
1023 || h
->root
.type
== bfd_link_hash_defweak
)
1025 sec
= h
->root
.u
.def
.section
;
1026 if ((r_type
== R_SPARC_WPLT30
1027 && h
->plt_offset
!= (bfd_vma
) -1)
1028 || ((r_type
== R_SPARC_GOT10
1029 || r_type
== R_SPARC_GOT13
1030 || r_type
== R_SPARC_GOT22
)
1031 && elf_hash_table (info
)->dynamic_sections_created
)
1033 && (input_section
->flags
& SEC_ALLOC
) != 0
1034 && (r_type
== R_SPARC_8
1035 || r_type
== R_SPARC_16
1036 || r_type
== R_SPARC_32
1037 || r_type
== R_SPARC_DISP8
1038 || r_type
== R_SPARC_DISP16
1039 || r_type
== R_SPARC_DISP32
1040 || r_type
== R_SPARC_WDISP30
1041 || r_type
== R_SPARC_WDISP22
1042 || r_type
== R_SPARC_HI22
1043 || r_type
== R_SPARC_22
1044 || r_type
== R_SPARC_13
1045 || r_type
== R_SPARC_LO10
1046 || r_type
== R_SPARC_UA32
1047 || ((r_type
== R_SPARC_PC10
1048 || r_type
== R_SPARC_PC22
)
1049 && strcmp (h
->root
.root
.string
,
1050 "_GLOBAL_OFFSET_TABLE_") != 0))))
1052 /* In these cases, we don't need the relocation
1053 value. We check specially because in some
1054 obscure cases sec->output_section will be NULL. */
1058 relocation
= (h
->root
.u
.def
.value
1059 + sec
->output_section
->vma
1060 + sec
->output_offset
);
1062 else if (h
->root
.type
== bfd_link_hash_undefweak
)
1064 else if (info
->shared
)
1068 if (! ((*info
->callbacks
->undefined_symbol
)
1069 (info
, h
->root
.root
.string
, input_bfd
,
1070 input_section
, rel
->r_offset
)))
1081 /* Relocation is to the entry for this symbol in the global
1085 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1086 BFD_ASSERT (sgot
!= NULL
);
1093 off
= h
->got_offset
;
1094 BFD_ASSERT (off
!= (bfd_vma
) -1);
1096 if (! elf_hash_table (info
)->dynamic_sections_created
)
1098 /* This is actually a static link. We must
1099 initialize this entry in the global offset table.
1100 Since the offset must always be a multiple of 4,
1101 we use the least significant bit to record
1102 whether we have initialized it already.
1104 When doing a dynamic link, we create a .rela.got
1105 relocation entry to initialize the value. This
1106 is done in the finish_dynamic_symbol routine. */
1111 bfd_put_32 (output_bfd
, relocation
,
1112 sgot
->contents
+ off
);
1117 relocation
= sgot
->output_offset
+ off
;
1123 BFD_ASSERT (local_got_offsets
!= NULL
1124 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
1126 off
= local_got_offsets
[r_symndx
];
1128 /* The offset must always be a multiple of 4. We use
1129 the least significant bit to record whether we have
1130 already processed this entry. */
1135 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1140 Elf_Internal_Rela outrel
;
1142 /* We need to generate a R_SPARC_RELATIVE reloc
1143 for the dynamic linker. */
1144 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1145 BFD_ASSERT (srelgot
!= NULL
);
1147 outrel
.r_offset
= (sgot
->output_section
->vma
1148 + sgot
->output_offset
1150 outrel
.r_info
= ELF32_R_INFO (0, R_SPARC_RELATIVE
);
1151 outrel
.r_addend
= 0;
1152 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1153 (((Elf32_External_Rela
*)
1155 + srelgot
->reloc_count
));
1156 ++srelgot
->reloc_count
;
1159 local_got_offsets
[r_symndx
] |= 1;
1162 relocation
= sgot
->output_offset
+ off
;
1167 case R_SPARC_WPLT30
:
1168 /* Relocation is to the entry for this symbol in the
1169 procedure linkage table. */
1170 BFD_ASSERT (h
!= NULL
);
1172 if (h
->plt_offset
== (bfd_vma
) -1)
1174 /* We didn't make a PLT entry for this symbol. This
1175 happens when statically linking PIC code. */
1181 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1182 BFD_ASSERT (splt
!= NULL
);
1185 relocation
= (splt
->output_section
->vma
1186 + splt
->output_offset
1193 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
1200 case R_SPARC_DISP16
:
1201 case R_SPARC_DISP32
:
1202 case R_SPARC_WDISP30
:
1203 case R_SPARC_WDISP22
:
1210 && (input_section
->flags
& SEC_ALLOC
) != 0)
1212 Elf_Internal_Rela outrel
;
1214 /* When generating a shared object, these relocations
1215 are copied into the output file to be resolved at run
1222 name
= (elf_string_from_elf_section
1224 elf_elfheader (input_bfd
)->e_shstrndx
,
1225 elf_section_data (input_section
)->rel_hdr
.sh_name
));
1229 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
1230 && strcmp (bfd_get_section_name (input_bfd
,
1234 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1235 BFD_ASSERT (sreloc
!= NULL
);
1238 outrel
.r_offset
= (rel
->r_offset
1239 + input_section
->output_section
->vma
1240 + input_section
->output_offset
);
1243 BFD_ASSERT (h
->dynindx
!= -1);
1244 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1245 outrel
.r_addend
= rel
->r_addend
;
1249 if (r_type
== R_SPARC_32
)
1251 outrel
.r_info
= ELF32_R_INFO (0, R_SPARC_RELATIVE
);
1252 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1258 sym
= local_syms
+ r_symndx
;
1260 BFD_ASSERT (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
);
1262 sec
= local_sections
[r_symndx
];
1263 if (sec
!= NULL
&& bfd_is_abs_section (sec
))
1265 else if (sec
== NULL
|| sec
->owner
== NULL
)
1267 bfd_set_error (bfd_error_bad_value
);
1274 osec
= sec
->output_section
;
1275 indx
= elf_section_data (osec
)->dynindx
;
1280 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
1281 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1285 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1286 (((Elf32_External_Rela
*)
1288 + sreloc
->reloc_count
));
1289 ++sreloc
->reloc_count
;
1291 /* This reloc will be computed at runtime, so there's no
1292 need to do anything now. */
1300 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1301 contents
, rel
->r_offset
,
1302 relocation
, rel
->r_addend
);
1304 if (r
!= bfd_reloc_ok
)
1309 case bfd_reloc_outofrange
:
1311 case bfd_reloc_overflow
:
1316 name
= h
->root
.root
.string
;
1319 name
= elf_string_from_elf_section (input_bfd
,
1320 symtab_hdr
->sh_link
,
1325 name
= bfd_section_name (input_bfd
, sec
);
1327 if (! ((*info
->callbacks
->reloc_overflow
)
1328 (info
, name
, howto
->name
, (bfd_vma
) 0,
1329 input_bfd
, input_section
, rel
->r_offset
)))
1340 /* Finish up dynamic symbol handling. We set the contents of various
1341 dynamic sections here. */
1344 elf32_sparc_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1346 struct bfd_link_info
*info
;
1347 struct elf_link_hash_entry
*h
;
1348 Elf_Internal_Sym
*sym
;
1352 dynobj
= elf_hash_table (info
)->dynobj
;
1354 if (h
->plt_offset
!= (bfd_vma
) -1)
1358 Elf_Internal_Rela rela
;
1360 /* This symbol has an entry in the procedure linkage table. Set
1363 BFD_ASSERT (h
->dynindx
!= -1);
1365 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1366 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1367 BFD_ASSERT (splt
!= NULL
&& srela
!= NULL
);
1369 /* Fill in the entry in the procedure linkage table. */
1370 bfd_put_32 (output_bfd
,
1371 PLT_ENTRY_WORD0
+ h
->plt_offset
,
1372 splt
->contents
+ h
->plt_offset
);
1373 bfd_put_32 (output_bfd
,
1375 + (((- (h
->plt_offset
+ 4)) >> 2) & 0x3fffff)),
1376 splt
->contents
+ h
->plt_offset
+ 4);
1377 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
1378 splt
->contents
+ h
->plt_offset
+ 8);
1380 /* Fill in the entry in the .rela.plt section. */
1381 rela
.r_offset
= (splt
->output_section
->vma
1382 + splt
->output_offset
1384 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SPARC_JMP_SLOT
);
1386 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1387 ((Elf32_External_Rela
*) srela
->contents
1388 + h
->plt_offset
/ PLT_ENTRY_SIZE
- 4));
1390 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1392 /* Mark the symbol as undefined, rather than as defined in
1393 the .plt section. Leave the value alone. */
1394 sym
->st_shndx
= SHN_UNDEF
;
1398 if (h
->got_offset
!= (bfd_vma
) -1)
1402 Elf_Internal_Rela rela
;
1404 /* This symbol has an entry in the global offset table. Set it
1407 BFD_ASSERT (h
->dynindx
!= -1);
1409 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1410 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
1411 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1413 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got_offset
);
1415 rela
.r_offset
= (sgot
->output_section
->vma
1416 + sgot
->output_offset
1418 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SPARC_GLOB_DAT
);
1420 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1421 ((Elf32_External_Rela
*) srela
->contents
1422 + srela
->reloc_count
));
1423 ++srela
->reloc_count
;
1426 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
1429 Elf_Internal_Rela rela
;
1431 /* This symbols needs a copy reloc. Set it up. */
1433 BFD_ASSERT (h
->dynindx
!= -1);
1435 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
1437 BFD_ASSERT (s
!= NULL
);
1439 rela
.r_offset
= (h
->root
.u
.def
.value
1440 + h
->root
.u
.def
.section
->output_section
->vma
1441 + h
->root
.u
.def
.section
->output_offset
);
1442 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SPARC_COPY
);
1444 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1445 ((Elf32_External_Rela
*) s
->contents
1450 /* Mark some specially defined symbols as absolute. */
1451 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1452 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
1453 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
1454 sym
->st_shndx
= SHN_ABS
;
1459 /* Finish up the dynamic sections. */
1462 elf32_sparc_finish_dynamic_sections (output_bfd
, info
)
1464 struct bfd_link_info
*info
;
1470 dynobj
= elf_hash_table (info
)->dynobj
;
1472 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
1474 if (elf_hash_table (info
)->dynamic_sections_created
)
1477 Elf32_External_Dyn
*dyncon
, *dynconend
;
1479 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1480 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
1482 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1483 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
1484 for (; dyncon
< dynconend
; dyncon
++)
1486 Elf_Internal_Dyn dyn
;
1490 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
1494 case DT_PLTGOT
: name
= ".plt"; size
= false; break;
1495 case DT_PLTRELSZ
: name
= ".rela.plt"; size
= true; break;
1496 case DT_JMPREL
: name
= ".rela.plt"; size
= false; break;
1497 default: name
= NULL
; size
= false; break;
1504 s
= bfd_get_section_by_name (output_bfd
, name
);
1510 dyn
.d_un
.d_ptr
= s
->vma
;
1513 if (s
->_cooked_size
!= 0)
1514 dyn
.d_un
.d_val
= s
->_cooked_size
;
1516 dyn
.d_un
.d_val
= s
->_raw_size
;
1519 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1523 /* Clear the first four entries in the procedure linkage table,
1524 and put a nop in the last four bytes. */
1525 if (splt
->_raw_size
> 0)
1527 memset (splt
->contents
, 0, 4 * PLT_ENTRY_SIZE
);
1528 bfd_put_32 (output_bfd
, SPARC_NOP
,
1529 splt
->contents
+ splt
->_raw_size
- 4);
1532 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
1536 /* Set the first entry in the global offset table to the address of
1537 the dynamic section. */
1538 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1539 BFD_ASSERT (sgot
!= NULL
);
1540 if (sgot
->_raw_size
> 0)
1543 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
1545 bfd_put_32 (output_bfd
,
1546 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
1550 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1556 Elf_Internal_Sym sym
;
1558 /* Set up the section symbols for the output sections. */
1560 sdynsym
= bfd_get_section_by_name (dynobj
, ".dynsym");
1561 BFD_ASSERT (sdynsym
!= NULL
);
1565 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
1568 for (s
= output_bfd
->sections
; s
!= NULL
; s
= s
->next
)
1572 sym
.st_value
= s
->vma
;
1574 indx
= elf_section_data (s
)->this_idx
;
1575 BFD_ASSERT (indx
> 0);
1576 sym
.st_shndx
= indx
;
1578 bfd_elf32_swap_symbol_out (output_bfd
, &sym
,
1579 ((Elf32_External_Sym
*) sdynsym
->contents
1580 + elf_section_data (s
)->dynindx
));
1583 /* Set the sh_info field of the output .dynsym section to the
1584 index of the first global symbol. */
1585 elf_section_data (sdynsym
->output_section
)->this_hdr
.sh_info
=
1586 bfd_count_sections (output_bfd
) + 1;
1592 #define TARGET_BIG_SYM bfd_elf32_sparc_vec
1593 #define TARGET_BIG_NAME "elf32-sparc"
1594 #define ELF_ARCH bfd_arch_sparc
1595 #define ELF_MACHINE_CODE EM_SPARC
1596 #define ELF_MAXPAGESIZE 0x10000
1597 #define elf_backend_create_dynamic_sections \
1598 elf32_sparc_create_dynamic_sections
1599 #define elf_backend_check_relocs elf32_sparc_check_relocs
1600 #define elf_backend_adjust_dynamic_symbol \
1601 elf32_sparc_adjust_dynamic_symbol
1602 #define elf_backend_size_dynamic_sections \
1603 elf32_sparc_size_dynamic_sections
1604 #define elf_backend_relocate_section elf32_sparc_relocate_section
1605 #define elf_backend_finish_dynamic_symbol \
1606 elf32_sparc_finish_dynamic_symbol
1607 #define elf_backend_finish_dynamic_sections \
1608 elf32_sparc_finish_dynamic_sections
1610 #include "elf32-target.h"