1 /* Motorola 68k series support for 32-bit ELF
2 Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
3 Free Software Foundation, Inc.
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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
28 static reloc_howto_type
*reloc_type_lookup
29 PARAMS ((bfd
*, bfd_reloc_code_real_type
));
30 static void rtype_to_howto
31 PARAMS ((bfd
*, arelent
*, Elf_Internal_Rela
*));
32 static struct bfd_hash_entry
*elf_m68k_link_hash_newfunc
33 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
34 static struct bfd_link_hash_table
*elf_m68k_link_hash_table_create
36 static bfd_boolean elf_m68k_check_relocs
37 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
38 const Elf_Internal_Rela
*));
39 static asection
*elf_m68k_gc_mark_hook
40 PARAMS ((asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
41 struct elf_link_hash_entry
*, Elf_Internal_Sym
*));
42 static bfd_boolean elf_m68k_gc_sweep_hook
43 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
44 const Elf_Internal_Rela
*));
45 static bfd_boolean elf_m68k_adjust_dynamic_symbol
46 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
47 static bfd_boolean elf_m68k_size_dynamic_sections
48 PARAMS ((bfd
*, struct bfd_link_info
*));
49 static bfd_boolean elf_m68k_discard_copies
50 PARAMS ((struct elf_link_hash_entry
*, PTR
));
51 static bfd_boolean elf_m68k_relocate_section
52 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
53 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
54 static bfd_boolean elf_m68k_finish_dynamic_symbol
55 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
57 static bfd_boolean elf_m68k_finish_dynamic_sections
58 PARAMS ((bfd
*, struct bfd_link_info
*));
60 static bfd_boolean elf32_m68k_set_private_flags
61 PARAMS ((bfd
*, flagword
));
62 static bfd_boolean elf32_m68k_merge_private_bfd_data
63 PARAMS ((bfd
*, bfd
*));
64 static bfd_boolean elf32_m68k_print_private_bfd_data
65 PARAMS ((bfd
*, PTR
));
66 static enum elf_reloc_type_class elf32_m68k_reloc_type_class
67 PARAMS ((const Elf_Internal_Rela
*));
69 static reloc_howto_type howto_table
[] = {
70 HOWTO(R_68K_NONE
, 0, 0, 0, FALSE
,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_NONE", FALSE
, 0, 0x00000000,FALSE
),
71 HOWTO(R_68K_32
, 0, 2,32, FALSE
,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_32", FALSE
, 0, 0xffffffff,FALSE
),
72 HOWTO(R_68K_16
, 0, 1,16, FALSE
,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_16", FALSE
, 0, 0x0000ffff,FALSE
),
73 HOWTO(R_68K_8
, 0, 0, 8, FALSE
,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_8", FALSE
, 0, 0x000000ff,FALSE
),
74 HOWTO(R_68K_PC32
, 0, 2,32, TRUE
, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_PC32", FALSE
, 0, 0xffffffff,TRUE
),
75 HOWTO(R_68K_PC16
, 0, 1,16, TRUE
, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PC16", FALSE
, 0, 0x0000ffff,TRUE
),
76 HOWTO(R_68K_PC8
, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PC8", FALSE
, 0, 0x000000ff,TRUE
),
77 HOWTO(R_68K_GOT32
, 0, 2,32, TRUE
, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_GOT32", FALSE
, 0, 0xffffffff,TRUE
),
78 HOWTO(R_68K_GOT16
, 0, 1,16, TRUE
, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_GOT16", FALSE
, 0, 0x0000ffff,TRUE
),
79 HOWTO(R_68K_GOT8
, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_GOT8", FALSE
, 0, 0x000000ff,TRUE
),
80 HOWTO(R_68K_GOT32O
, 0, 2,32, FALSE
,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_GOT32O", FALSE
, 0, 0xffffffff,FALSE
),
81 HOWTO(R_68K_GOT16O
, 0, 1,16, FALSE
,0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_GOT16O", FALSE
, 0, 0x0000ffff,FALSE
),
82 HOWTO(R_68K_GOT8O
, 0, 0, 8, FALSE
,0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_GOT8O", FALSE
, 0, 0x000000ff,FALSE
),
83 HOWTO(R_68K_PLT32
, 0, 2,32, TRUE
, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_PLT32", FALSE
, 0, 0xffffffff,TRUE
),
84 HOWTO(R_68K_PLT16
, 0, 1,16, TRUE
, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PLT16", FALSE
, 0, 0x0000ffff,TRUE
),
85 HOWTO(R_68K_PLT8
, 0, 0, 8, TRUE
, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PLT8", FALSE
, 0, 0x000000ff,TRUE
),
86 HOWTO(R_68K_PLT32O
, 0, 2,32, FALSE
,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_PLT32O", FALSE
, 0, 0xffffffff,FALSE
),
87 HOWTO(R_68K_PLT16O
, 0, 1,16, FALSE
,0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PLT16O", FALSE
, 0, 0x0000ffff,FALSE
),
88 HOWTO(R_68K_PLT8O
, 0, 0, 8, FALSE
,0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PLT8O", FALSE
, 0, 0x000000ff,FALSE
),
89 HOWTO(R_68K_COPY
, 0, 0, 0, FALSE
,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_COPY", FALSE
, 0, 0xffffffff,FALSE
),
90 HOWTO(R_68K_GLOB_DAT
, 0, 2,32, FALSE
,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_GLOB_DAT", FALSE
, 0, 0xffffffff,FALSE
),
91 HOWTO(R_68K_JMP_SLOT
, 0, 2,32, FALSE
,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_JMP_SLOT", FALSE
, 0, 0xffffffff,FALSE
),
92 HOWTO(R_68K_RELATIVE
, 0, 2,32, FALSE
,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_RELATIVE", FALSE
, 0, 0xffffffff,FALSE
),
93 /* GNU extension to record C++ vtable hierarchy. */
94 HOWTO (R_68K_GNU_VTINHERIT
, /* type */
96 2, /* size (0 = byte, 1 = short, 2 = long) */
98 FALSE
, /* pc_relative */
100 complain_overflow_dont
, /* complain_on_overflow */
101 NULL
, /* special_function */
102 "R_68K_GNU_VTINHERIT", /* name */
103 FALSE
, /* partial_inplace */
107 /* GNU extension to record C++ vtable member usage. */
108 HOWTO (R_68K_GNU_VTENTRY
, /* type */
110 2, /* size (0 = byte, 1 = short, 2 = long) */
112 FALSE
, /* pc_relative */
114 complain_overflow_dont
, /* complain_on_overflow */
115 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
116 "R_68K_GNU_VTENTRY", /* name */
117 FALSE
, /* partial_inplace */
124 rtype_to_howto (abfd
, cache_ptr
, dst
)
125 bfd
*abfd ATTRIBUTE_UNUSED
;
127 Elf_Internal_Rela
*dst
;
129 BFD_ASSERT (ELF32_R_TYPE(dst
->r_info
) < (unsigned int) R_68K_max
);
130 cache_ptr
->howto
= &howto_table
[ELF32_R_TYPE(dst
->r_info
)];
133 #define elf_info_to_howto rtype_to_howto
137 bfd_reloc_code_real_type bfd_val
;
140 { BFD_RELOC_NONE
, R_68K_NONE
},
141 { BFD_RELOC_32
, R_68K_32
},
142 { BFD_RELOC_16
, R_68K_16
},
143 { BFD_RELOC_8
, R_68K_8
},
144 { BFD_RELOC_32_PCREL
, R_68K_PC32
},
145 { BFD_RELOC_16_PCREL
, R_68K_PC16
},
146 { BFD_RELOC_8_PCREL
, R_68K_PC8
},
147 { BFD_RELOC_32_GOT_PCREL
, R_68K_GOT32
},
148 { BFD_RELOC_16_GOT_PCREL
, R_68K_GOT16
},
149 { BFD_RELOC_8_GOT_PCREL
, R_68K_GOT8
},
150 { BFD_RELOC_32_GOTOFF
, R_68K_GOT32O
},
151 { BFD_RELOC_16_GOTOFF
, R_68K_GOT16O
},
152 { BFD_RELOC_8_GOTOFF
, R_68K_GOT8O
},
153 { BFD_RELOC_32_PLT_PCREL
, R_68K_PLT32
},
154 { BFD_RELOC_16_PLT_PCREL
, R_68K_PLT16
},
155 { BFD_RELOC_8_PLT_PCREL
, R_68K_PLT8
},
156 { BFD_RELOC_32_PLTOFF
, R_68K_PLT32O
},
157 { BFD_RELOC_16_PLTOFF
, R_68K_PLT16O
},
158 { BFD_RELOC_8_PLTOFF
, R_68K_PLT8O
},
159 { BFD_RELOC_NONE
, R_68K_COPY
},
160 { BFD_RELOC_68K_GLOB_DAT
, R_68K_GLOB_DAT
},
161 { BFD_RELOC_68K_JMP_SLOT
, R_68K_JMP_SLOT
},
162 { BFD_RELOC_68K_RELATIVE
, R_68K_RELATIVE
},
163 { BFD_RELOC_CTOR
, R_68K_32
},
164 { BFD_RELOC_VTABLE_INHERIT
, R_68K_GNU_VTINHERIT
},
165 { BFD_RELOC_VTABLE_ENTRY
, R_68K_GNU_VTENTRY
},
168 static reloc_howto_type
*
169 reloc_type_lookup (abfd
, code
)
170 bfd
*abfd ATTRIBUTE_UNUSED
;
171 bfd_reloc_code_real_type code
;
174 for (i
= 0; i
< sizeof (reloc_map
) / sizeof (reloc_map
[0]); i
++)
176 if (reloc_map
[i
].bfd_val
== code
)
177 return &howto_table
[reloc_map
[i
].elf_val
];
182 #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup
183 #define ELF_ARCH bfd_arch_m68k
185 /* Functions for the m68k ELF linker. */
187 /* The name of the dynamic interpreter. This is put in the .interp
190 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
192 /* The size in bytes of an entry in the procedure linkage table. */
194 #define PLT_ENTRY_SIZE 20
196 /* The first entry in a procedure linkage table looks like this. See
197 the SVR4 ABI m68k supplement to see how this works. */
199 static const bfd_byte elf_m68k_plt0_entry
[PLT_ENTRY_SIZE
] =
201 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
202 0, 0, 0, 0, /* replaced with offset to .got + 4. */
203 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */
204 0, 0, 0, 0, /* replaced with offset to .got + 8. */
205 0, 0, 0, 0 /* pad out to 20 bytes. */
208 /* Subsequent entries in a procedure linkage table look like this. */
210 static const bfd_byte elf_m68k_plt_entry
[PLT_ENTRY_SIZE
] =
212 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */
213 0, 0, 0, 0, /* replaced with offset to symbol's .got entry. */
214 0x2f, 0x3c, /* move.l #offset,-(%sp) */
215 0, 0, 0, 0, /* replaced with offset into relocation table. */
216 0x60, 0xff, /* bra.l .plt */
217 0, 0, 0, 0 /* replaced with offset to start of .plt. */
220 #define CPU32_FLAG(abfd) (elf_elfheader (abfd)->e_flags & EF_CPU32)
222 #define PLT_CPU32_ENTRY_SIZE 24
223 /* Procedure linkage table entries for the cpu32 */
224 static const bfd_byte elf_cpu32_plt0_entry
[PLT_CPU32_ENTRY_SIZE
] =
226 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
227 0, 0, 0, 0, /* replaced with offset to .got + 4. */
228 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
229 0, 0, 0, 0, /* replace with offset to .got +8. */
230 0x4e, 0xd1, /* jmp %a1@ */
231 0, 0, 0, 0, /* pad out to 24 bytes. */
235 static const bfd_byte elf_cpu32_plt_entry
[PLT_CPU32_ENTRY_SIZE
] =
237 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
238 0, 0, 0, 0, /* replaced with offset to symbol's .got entry. */
239 0x4e, 0xd1, /* jmp %a1@ */
240 0x2f, 0x3c, /* move.l #offset,-(%sp) */
241 0, 0, 0, 0, /* replaced with offset into relocation table. */
242 0x60, 0xff, /* bra.l .plt */
243 0, 0, 0, 0, /* replaced with offset to start of .plt. */
247 /* The m68k linker needs to keep track of the number of relocs that it
248 decides to copy in check_relocs for each symbol. This is so that it
249 can discard PC relative relocs if it doesn't need them when linking
250 with -Bsymbolic. We store the information in a field extending the
251 regular ELF linker hash table. */
253 /* This structure keeps track of the number of PC relative relocs we have
254 copied for a given symbol. */
256 struct elf_m68k_pcrel_relocs_copied
259 struct elf_m68k_pcrel_relocs_copied
*next
;
260 /* A section in dynobj. */
262 /* Number of relocs copied in this section. */
266 /* m68k ELF linker hash entry. */
268 struct elf_m68k_link_hash_entry
270 struct elf_link_hash_entry root
;
272 /* Number of PC relative relocs copied for this symbol. */
273 struct elf_m68k_pcrel_relocs_copied
*pcrel_relocs_copied
;
276 #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent))
278 /* m68k ELF linker hash table. */
280 struct elf_m68k_link_hash_table
282 struct elf_link_hash_table root
;
284 /* Small local sym to section mapping cache. */
285 struct sym_sec_cache sym_sec
;
288 /* Get the m68k ELF linker hash table from a link_info structure. */
290 #define elf_m68k_hash_table(p) \
291 ((struct elf_m68k_link_hash_table *) (p)->hash)
293 /* Create an entry in an m68k ELF linker hash table. */
295 static struct bfd_hash_entry
*
296 elf_m68k_link_hash_newfunc (entry
, table
, string
)
297 struct bfd_hash_entry
*entry
;
298 struct bfd_hash_table
*table
;
301 struct bfd_hash_entry
*ret
= entry
;
303 /* Allocate the structure if it has not already been allocated by a
306 ret
= bfd_hash_allocate (table
,
307 sizeof (struct elf_m68k_link_hash_entry
));
311 /* Call the allocation method of the superclass. */
312 ret
= _bfd_elf_link_hash_newfunc (ret
, table
, string
);
314 elf_m68k_hash_entry (ret
)->pcrel_relocs_copied
= NULL
;
319 /* Create an m68k ELF linker hash table. */
321 static struct bfd_link_hash_table
*
322 elf_m68k_link_hash_table_create (abfd
)
325 struct elf_m68k_link_hash_table
*ret
;
326 bfd_size_type amt
= sizeof (struct elf_m68k_link_hash_table
);
328 ret
= (struct elf_m68k_link_hash_table
*) bfd_malloc (amt
);
329 if (ret
== (struct elf_m68k_link_hash_table
*) NULL
)
332 if (! _bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
333 elf_m68k_link_hash_newfunc
))
339 ret
->sym_sec
.abfd
= NULL
;
341 return &ret
->root
.root
;
344 /* Keep m68k-specific flags in the ELF header. */
346 elf32_m68k_set_private_flags (abfd
, flags
)
350 elf_elfheader (abfd
)->e_flags
= flags
;
351 elf_flags_init (abfd
) = TRUE
;
355 /* Merge backend specific data from an object file to the output
356 object file when linking. */
358 elf32_m68k_merge_private_bfd_data (ibfd
, obfd
)
365 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
366 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
369 in_flags
= elf_elfheader (ibfd
)->e_flags
;
370 out_flags
= elf_elfheader (obfd
)->e_flags
;
372 if (!elf_flags_init (obfd
))
374 elf_flags_init (obfd
) = TRUE
;
375 elf_elfheader (obfd
)->e_flags
= in_flags
;
381 /* Display the flags field. */
383 elf32_m68k_print_private_bfd_data (abfd
, ptr
)
387 FILE *file
= (FILE *) ptr
;
389 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
391 /* Print normal ELF private data. */
392 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
394 /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
396 /* xgettext:c-format */
397 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
399 if (elf_elfheader (abfd
)->e_flags
& EF_CPU32
)
400 fprintf (file
, _(" [cpu32]"));
402 if (elf_elfheader (abfd
)->e_flags
& EF_M68000
)
403 fprintf (file
, _(" [m68000]"));
409 /* Look through the relocs for a section during the first phase, and
410 allocate space in the global offset table or procedure linkage
414 elf_m68k_check_relocs (abfd
, info
, sec
, relocs
)
416 struct bfd_link_info
*info
;
418 const Elf_Internal_Rela
*relocs
;
421 Elf_Internal_Shdr
*symtab_hdr
;
422 struct elf_link_hash_entry
**sym_hashes
;
423 bfd_signed_vma
*local_got_refcounts
;
424 const Elf_Internal_Rela
*rel
;
425 const Elf_Internal_Rela
*rel_end
;
430 if (info
->relocateable
)
433 dynobj
= elf_hash_table (info
)->dynobj
;
434 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
435 sym_hashes
= elf_sym_hashes (abfd
);
436 local_got_refcounts
= elf_local_got_refcounts (abfd
);
442 rel_end
= relocs
+ sec
->reloc_count
;
443 for (rel
= relocs
; rel
< rel_end
; rel
++)
445 unsigned long r_symndx
;
446 struct elf_link_hash_entry
*h
;
448 r_symndx
= ELF32_R_SYM (rel
->r_info
);
450 if (r_symndx
< symtab_hdr
->sh_info
)
453 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
455 switch (ELF32_R_TYPE (rel
->r_info
))
461 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
467 /* This symbol requires a global offset table entry. */
471 /* Create the .got section. */
472 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
473 if (!_bfd_elf_create_got_section (dynobj
, info
))
479 sgot
= bfd_get_section_by_name (dynobj
, ".got");
480 BFD_ASSERT (sgot
!= NULL
);
484 && (h
!= NULL
|| info
->shared
))
486 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
489 srelgot
= bfd_make_section (dynobj
, ".rela.got");
491 || !bfd_set_section_flags (dynobj
, srelgot
,
498 || !bfd_set_section_alignment (dynobj
, srelgot
, 2))
505 if (h
->got
.refcount
== 0)
507 /* Make sure this symbol is output as a dynamic symbol. */
509 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
511 if (!bfd_elf32_link_record_dynamic_symbol (info
, h
))
515 /* Allocate space in the .got section. */
516 sgot
->_raw_size
+= 4;
517 /* Allocate relocation space. */
518 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
524 /* This is a global offset table entry for a local symbol. */
525 if (local_got_refcounts
== NULL
)
529 size
= symtab_hdr
->sh_info
;
530 size
*= sizeof (bfd_signed_vma
);
531 local_got_refcounts
= ((bfd_signed_vma
*)
532 bfd_zalloc (abfd
, size
));
533 if (local_got_refcounts
== NULL
)
535 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
537 if (local_got_refcounts
[r_symndx
] == 0)
539 sgot
->_raw_size
+= 4;
542 /* If we are generating a shared object, we need to
543 output a R_68K_RELATIVE reloc so that the dynamic
544 linker can adjust this GOT entry. */
545 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
548 local_got_refcounts
[r_symndx
]++;
555 /* This symbol requires a procedure linkage table entry. We
556 actually build the entry in adjust_dynamic_symbol,
557 because this might be a case of linking PIC code which is
558 never referenced by a dynamic object, in which case we
559 don't need to generate a procedure linkage table entry
562 /* If this is a local symbol, we resolve it directly without
563 creating a procedure linkage table entry. */
567 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
574 /* This symbol requires a procedure linkage table entry. */
578 /* It does not make sense to have this relocation for a
579 local symbol. FIXME: does it? How to handle it if
580 it does make sense? */
581 bfd_set_error (bfd_error_bad_value
);
585 /* Make sure this symbol is output as a dynamic symbol. */
587 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
589 if (!bfd_elf32_link_record_dynamic_symbol (info
, h
))
593 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
600 /* If we are creating a shared library and this is not a local
601 symbol, we need to copy the reloc into the shared library.
602 However when linking with -Bsymbolic and this is a global
603 symbol which is defined in an object we are including in the
604 link (i.e., DEF_REGULAR is set), then we can resolve the
605 reloc directly. At this point we have not seen all the input
606 files, so it is possible that DEF_REGULAR is not set now but
607 will be set later (it is never cleared). We account for that
608 possibility below by storing information in the
609 pcrel_relocs_copied field of the hash table entry. */
611 && (sec
->flags
& SEC_ALLOC
) != 0
614 || h
->root
.type
== bfd_link_hash_defweak
615 || (h
->elf_link_hash_flags
616 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
620 /* Make sure a plt entry is created for this symbol if
621 it turns out to be a function defined by a dynamic
633 /* Make sure a plt entry is created for this symbol if it
634 turns out to be a function defined by a dynamic object. */
638 /* If we are creating a shared library, we need to copy the
639 reloc into the shared library. */
641 && (sec
->flags
& SEC_ALLOC
) != 0)
643 /* When creating a shared object, we must copy these
644 reloc types into the output file. We create a reloc
645 section in dynobj and make room for this reloc. */
650 name
= (bfd_elf_string_from_elf_section
652 elf_elfheader (abfd
)->e_shstrndx
,
653 elf_section_data (sec
)->rel_hdr
.sh_name
));
657 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
658 && strcmp (bfd_get_section_name (abfd
, sec
),
661 sreloc
= bfd_get_section_by_name (dynobj
, name
);
664 sreloc
= bfd_make_section (dynobj
, name
);
666 || !bfd_set_section_flags (dynobj
, sreloc
,
673 || !bfd_set_section_alignment (dynobj
, sreloc
, 2))
678 if (sec
->flags
& SEC_READONLY
679 /* Don't set DF_TEXTREL yet for PC relative
680 relocations, they might be discarded later. */
681 && !(ELF32_R_TYPE (rel
->r_info
) == R_68K_PC8
682 || ELF32_R_TYPE (rel
->r_info
) == R_68K_PC16
683 || ELF32_R_TYPE (rel
->r_info
) == R_68K_PC32
))
684 info
->flags
|= DF_TEXTREL
;
686 sreloc
->_raw_size
+= sizeof (Elf32_External_Rela
);
688 /* We count the number of PC relative relocations we have
689 entered for this symbol, so that we can discard them
690 again if, in the -Bsymbolic case, the symbol is later
691 defined by a regular object, or, in the normal shared
692 case, the symbol is forced to be local. Note that this
693 function is only called if we are using an m68kelf linker
694 hash table, which means that h is really a pointer to an
695 elf_m68k_link_hash_entry. */
696 if (ELF32_R_TYPE (rel
->r_info
) == R_68K_PC8
697 || ELF32_R_TYPE (rel
->r_info
) == R_68K_PC16
698 || ELF32_R_TYPE (rel
->r_info
) == R_68K_PC32
)
700 struct elf_m68k_pcrel_relocs_copied
*p
;
701 struct elf_m68k_pcrel_relocs_copied
**head
;
705 struct elf_m68k_link_hash_entry
*eh
706 = elf_m68k_hash_entry (h
);
707 head
= &eh
->pcrel_relocs_copied
;
712 s
= (bfd_section_from_r_symndx
713 (abfd
, &elf_m68k_hash_table (info
)->sym_sec
,
718 head
= ((struct elf_m68k_pcrel_relocs_copied
**)
719 &elf_section_data (s
)->local_dynrel
);
722 for (p
= *head
; p
!= NULL
; p
= p
->next
)
723 if (p
->section
== sreloc
)
728 p
= ((struct elf_m68k_pcrel_relocs_copied
*)
729 bfd_alloc (dynobj
, (bfd_size_type
) sizeof *p
));
744 /* This relocation describes the C++ object vtable hierarchy.
745 Reconstruct it for later use during GC. */
746 case R_68K_GNU_VTINHERIT
:
747 if (!_bfd_elf32_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
751 /* This relocation describes which C++ vtable entries are actually
752 used. Record for later use during GC. */
753 case R_68K_GNU_VTENTRY
:
754 if (!_bfd_elf32_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
766 /* Return the section that should be marked against GC for a given
770 elf_m68k_gc_mark_hook (sec
, info
, rel
, h
, sym
)
772 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
773 Elf_Internal_Rela
*rel
;
774 struct elf_link_hash_entry
*h
;
775 Elf_Internal_Sym
*sym
;
779 switch (ELF32_R_TYPE (rel
->r_info
))
781 case R_68K_GNU_VTINHERIT
:
782 case R_68K_GNU_VTENTRY
:
786 switch (h
->root
.type
)
791 case bfd_link_hash_defined
:
792 case bfd_link_hash_defweak
:
793 return h
->root
.u
.def
.section
;
795 case bfd_link_hash_common
:
796 return h
->root
.u
.c
.p
->section
;
801 return bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
806 /* Update the got entry reference counts for the section being removed. */
809 elf_m68k_gc_sweep_hook (abfd
, info
, sec
, relocs
)
811 struct bfd_link_info
*info
;
813 const Elf_Internal_Rela
*relocs
;
815 Elf_Internal_Shdr
*symtab_hdr
;
816 struct elf_link_hash_entry
**sym_hashes
;
817 bfd_signed_vma
*local_got_refcounts
;
818 const Elf_Internal_Rela
*rel
, *relend
;
819 unsigned long r_symndx
;
820 struct elf_link_hash_entry
*h
;
825 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
826 sym_hashes
= elf_sym_hashes (abfd
);
827 local_got_refcounts
= elf_local_got_refcounts (abfd
);
829 dynobj
= elf_hash_table (info
)->dynobj
;
833 sgot
= bfd_get_section_by_name (dynobj
, ".got");
834 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
836 relend
= relocs
+ sec
->reloc_count
;
837 for (rel
= relocs
; rel
< relend
; rel
++)
839 switch (ELF32_R_TYPE (rel
->r_info
))
847 r_symndx
= ELF32_R_SYM (rel
->r_info
);
848 if (r_symndx
>= symtab_hdr
->sh_info
)
850 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
851 if (h
->got
.refcount
> 0)
854 if (h
->got
.refcount
== 0)
856 /* We don't need the .got entry any more. */
857 sgot
->_raw_size
-= 4;
858 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
862 else if (local_got_refcounts
!= NULL
)
864 if (local_got_refcounts
[r_symndx
] > 0)
866 --local_got_refcounts
[r_symndx
];
867 if (local_got_refcounts
[r_symndx
] == 0)
869 /* We don't need the .got entry any more. */
870 sgot
->_raw_size
-= 4;
872 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
890 r_symndx
= ELF32_R_SYM (rel
->r_info
);
891 if (r_symndx
>= symtab_hdr
->sh_info
)
893 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
894 if (h
->plt
.refcount
> 0)
907 /* Adjust a symbol defined by a dynamic object and referenced by a
908 regular object. The current definition is in some section of the
909 dynamic object, but we're not including those sections. We have to
910 change the definition to something the rest of the link can
914 elf_m68k_adjust_dynamic_symbol (info
, h
)
915 struct bfd_link_info
*info
;
916 struct elf_link_hash_entry
*h
;
920 unsigned int power_of_two
;
922 dynobj
= elf_hash_table (info
)->dynobj
;
924 /* Make sure we know what is going on here. */
925 BFD_ASSERT (dynobj
!= NULL
926 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
927 || h
->weakdef
!= NULL
928 || ((h
->elf_link_hash_flags
929 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
930 && (h
->elf_link_hash_flags
931 & ELF_LINK_HASH_REF_REGULAR
) != 0
932 && (h
->elf_link_hash_flags
933 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
935 /* If this is a function, put it in the procedure linkage table. We
936 will fill in the contents of the procedure linkage table later,
937 when we know the address of the .got section. */
938 if (h
->type
== STT_FUNC
939 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
942 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) == 0
943 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) == 0
944 /* We must always create the plt entry if it was referenced
945 by a PLTxxO relocation. In this case we already recorded
946 it as a dynamic symbol. */
949 /* This case can occur if we saw a PLTxx reloc in an input
950 file, but the symbol was never referred to by a dynamic
951 object. In such a case, we don't actually need to build
952 a procedure linkage table, and we can just do a PCxx
954 BFD_ASSERT ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0);
955 h
->plt
.offset
= (bfd_vma
) -1;
959 /* GC may have rendered this entry unused. */
960 if (h
->plt
.refcount
<= 0)
962 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
963 h
->plt
.offset
= (bfd_vma
) -1;
967 /* Make sure this symbol is output as a dynamic symbol. */
969 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
971 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
975 s
= bfd_get_section_by_name (dynobj
, ".plt");
976 BFD_ASSERT (s
!= NULL
);
978 /* If this is the first .plt entry, make room for the special
980 if (s
->_raw_size
== 0)
982 if (CPU32_FLAG (dynobj
))
983 s
->_raw_size
+= PLT_CPU32_ENTRY_SIZE
;
985 s
->_raw_size
+= PLT_ENTRY_SIZE
;
988 /* If this symbol is not defined in a regular file, and we are
989 not generating a shared library, then set the symbol to this
990 location in the .plt. This is required to make function
991 pointers compare as equal between the normal executable and
992 the shared library. */
994 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
996 h
->root
.u
.def
.section
= s
;
997 h
->root
.u
.def
.value
= s
->_raw_size
;
1000 h
->plt
.offset
= s
->_raw_size
;
1002 /* Make room for this entry. */
1003 if (CPU32_FLAG (dynobj
))
1004 s
->_raw_size
+= PLT_CPU32_ENTRY_SIZE
;
1006 s
->_raw_size
+= PLT_ENTRY_SIZE
;
1008 /* We also need to make an entry in the .got.plt section, which
1009 will be placed in the .got section by the linker script. */
1010 s
= bfd_get_section_by_name (dynobj
, ".got.plt");
1011 BFD_ASSERT (s
!= NULL
);
1014 /* We also need to make an entry in the .rela.plt section. */
1015 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1016 BFD_ASSERT (s
!= NULL
);
1017 s
->_raw_size
+= sizeof (Elf32_External_Rela
);
1022 /* Reinitialize the plt offset now that it is not used as a reference
1024 h
->plt
.offset
= (bfd_vma
) -1;
1026 /* If this is a weak symbol, and there is a real definition, the
1027 processor independent code will have arranged for us to see the
1028 real definition first, and we can just use the same value. */
1029 if (h
->weakdef
!= NULL
)
1031 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1032 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1033 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1034 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1038 /* This is a reference to a symbol defined by a dynamic object which
1039 is not a function. */
1041 /* If we are creating a shared library, we must presume that the
1042 only references to the symbol are via the global offset table.
1043 For such cases we need not do anything here; the relocations will
1044 be handled correctly by relocate_section. */
1048 /* We must allocate the symbol in our .dynbss section, which will
1049 become part of the .bss section of the executable. There will be
1050 an entry for this symbol in the .dynsym section. The dynamic
1051 object will contain position independent code, so all references
1052 from the dynamic object to this symbol will go through the global
1053 offset table. The dynamic linker will use the .dynsym entry to
1054 determine the address it must put in the global offset table, so
1055 both the dynamic object and the regular object will refer to the
1056 same memory location for the variable. */
1058 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
1059 BFD_ASSERT (s
!= NULL
);
1061 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
1062 copy the initial value out of the dynamic object and into the
1063 runtime process image. We need to remember the offset into the
1064 .rela.bss section we are going to use. */
1065 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1069 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
1070 BFD_ASSERT (srel
!= NULL
);
1071 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
1072 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
1075 /* We need to figure out the alignment required for this symbol. I
1076 have no idea how ELF linkers handle this. */
1077 power_of_two
= bfd_log2 (h
->size
);
1078 if (power_of_two
> 3)
1081 /* Apply the required alignment. */
1082 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
1083 (bfd_size_type
) (1 << power_of_two
));
1084 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
1086 if (!bfd_set_section_alignment (dynobj
, s
, power_of_two
))
1090 /* Define the symbol as being at this point in the section. */
1091 h
->root
.u
.def
.section
= s
;
1092 h
->root
.u
.def
.value
= s
->_raw_size
;
1094 /* Increment the section size to make room for the symbol. */
1095 s
->_raw_size
+= h
->size
;
1100 /* Set the sizes of the dynamic sections. */
1103 elf_m68k_size_dynamic_sections (output_bfd
, info
)
1104 bfd
*output_bfd ATTRIBUTE_UNUSED
;
1105 struct bfd_link_info
*info
;
1112 dynobj
= elf_hash_table (info
)->dynobj
;
1113 BFD_ASSERT (dynobj
!= NULL
);
1115 if (elf_hash_table (info
)->dynamic_sections_created
)
1117 /* Set the contents of the .interp section to the interpreter. */
1120 s
= bfd_get_section_by_name (dynobj
, ".interp");
1121 BFD_ASSERT (s
!= NULL
);
1122 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1123 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1128 /* We may have created entries in the .rela.got section.
1129 However, if we are not creating the dynamic sections, we will
1130 not actually use these entries. Reset the size of .rela.got,
1131 which will cause it to get stripped from the output file
1133 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
1138 /* If this is a -Bsymbolic shared link, then we need to discard all
1139 PC relative relocs against symbols defined in a regular object.
1140 For the normal shared case we discard the PC relative relocs
1141 against symbols that have become local due to visibility changes.
1142 We allocated space for them in the check_relocs routine, but we
1143 will not fill them in in the relocate_section routine. */
1145 elf_link_hash_traverse (elf_hash_table (info
),
1146 elf_m68k_discard_copies
,
1149 /* The check_relocs and adjust_dynamic_symbol entry points have
1150 determined the sizes of the various dynamic sections. Allocate
1154 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1159 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1162 /* It's OK to base decisions on the section name, because none
1163 of the dynobj section names depend upon the input files. */
1164 name
= bfd_get_section_name (dynobj
, s
);
1168 if (strcmp (name
, ".plt") == 0)
1170 if (s
->_raw_size
== 0)
1172 /* Strip this section if we don't need it; see the
1178 /* Remember whether there is a PLT. */
1182 else if (strncmp (name
, ".rela", 5) == 0)
1184 if (s
->_raw_size
== 0)
1186 /* If we don't need this section, strip it from the
1187 output file. This is mostly to handle .rela.bss and
1188 .rela.plt. We must create both sections in
1189 create_dynamic_sections, because they must be created
1190 before the linker maps input sections to output
1191 sections. The linker does that before
1192 adjust_dynamic_symbol is called, and it is that
1193 function which decides whether anything needs to go
1194 into these sections. */
1201 /* We use the reloc_count field as a counter if we need
1202 to copy relocs into the output file. */
1206 else if (strncmp (name
, ".got", 4) != 0)
1208 /* It's not one of our sections, so don't allocate space. */
1214 _bfd_strip_section_from_output (info
, s
);
1218 /* Allocate memory for the section contents. */
1219 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
1220 Unused entries should be reclaimed before the section's contents
1221 are written out, but at the moment this does not happen. Thus in
1222 order to prevent writing out garbage, we initialise the section's
1223 contents to zero. */
1224 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->_raw_size
);
1225 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1229 if (elf_hash_table (info
)->dynamic_sections_created
)
1231 /* Add some entries to the .dynamic section. We fill in the
1232 values later, in elf_m68k_finish_dynamic_sections, but we
1233 must add the entries now so that we get the correct size for
1234 the .dynamic section. The DT_DEBUG entry is filled in by the
1235 dynamic linker and used by the debugger. */
1236 #define add_dynamic_entry(TAG, VAL) \
1237 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1241 if (!add_dynamic_entry (DT_DEBUG
, 0))
1247 if (!add_dynamic_entry (DT_PLTGOT
, 0)
1248 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
1249 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
1250 || !add_dynamic_entry (DT_JMPREL
, 0))
1256 if (!add_dynamic_entry (DT_RELA
, 0)
1257 || !add_dynamic_entry (DT_RELASZ
, 0)
1258 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
1262 if ((info
->flags
& DF_TEXTREL
) != 0)
1264 if (!add_dynamic_entry (DT_TEXTREL
, 0))
1268 #undef add_dynamic_entry
1273 /* This function is called via elf_link_hash_traverse if we are
1274 creating a shared object. In the -Bsymbolic case it discards the
1275 space allocated to copy PC relative relocs against symbols which
1276 are defined in regular objects. For the normal shared case, it
1277 discards space for pc-relative relocs that have become local due to
1278 symbol visibility changes. We allocated space for them in the
1279 check_relocs routine, but we won't fill them in in the
1280 relocate_section routine.
1282 We also check whether any of the remaining relocations apply
1283 against a readonly section, and set the DF_TEXTREL flag in this
1287 elf_m68k_discard_copies (h
, inf
)
1288 struct elf_link_hash_entry
*h
;
1291 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
1292 struct elf_m68k_pcrel_relocs_copied
*s
;
1294 if (h
->root
.type
== bfd_link_hash_warning
)
1295 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1297 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0
1299 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0))
1301 if ((info
->flags
& DF_TEXTREL
) == 0)
1303 /* Look for relocations against read-only sections. */
1304 for (s
= elf_m68k_hash_entry (h
)->pcrel_relocs_copied
;
1307 if ((s
->section
->flags
& SEC_READONLY
) != 0)
1309 info
->flags
|= DF_TEXTREL
;
1317 for (s
= elf_m68k_hash_entry (h
)->pcrel_relocs_copied
;
1320 s
->section
->_raw_size
-= s
->count
* sizeof (Elf32_External_Rela
);
1325 /* Relocate an M68K ELF section. */
1328 elf_m68k_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
1329 contents
, relocs
, local_syms
, local_sections
)
1331 struct bfd_link_info
*info
;
1333 asection
*input_section
;
1335 Elf_Internal_Rela
*relocs
;
1336 Elf_Internal_Sym
*local_syms
;
1337 asection
**local_sections
;
1340 Elf_Internal_Shdr
*symtab_hdr
;
1341 struct elf_link_hash_entry
**sym_hashes
;
1342 bfd_vma
*local_got_offsets
;
1346 Elf_Internal_Rela
*rel
;
1347 Elf_Internal_Rela
*relend
;
1349 if (info
->relocateable
)
1352 dynobj
= elf_hash_table (info
)->dynobj
;
1353 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1354 sym_hashes
= elf_sym_hashes (input_bfd
);
1355 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1362 relend
= relocs
+ input_section
->reloc_count
;
1363 for (; rel
< relend
; rel
++)
1366 reloc_howto_type
*howto
;
1367 unsigned long r_symndx
;
1368 struct elf_link_hash_entry
*h
;
1369 Elf_Internal_Sym
*sym
;
1372 bfd_reloc_status_type r
;
1374 r_type
= ELF32_R_TYPE (rel
->r_info
);
1375 if (r_type
< 0 || r_type
>= (int) R_68K_max
)
1377 bfd_set_error (bfd_error_bad_value
);
1380 howto
= howto_table
+ r_type
;
1382 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1387 if (r_symndx
< symtab_hdr
->sh_info
)
1389 sym
= local_syms
+ r_symndx
;
1390 sec
= local_sections
[r_symndx
];
1391 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, sec
, rel
);
1395 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1396 while (h
->root
.type
== bfd_link_hash_indirect
1397 || h
->root
.type
== bfd_link_hash_warning
)
1398 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1399 if (h
->root
.type
== bfd_link_hash_defined
1400 || h
->root
.type
== bfd_link_hash_defweak
)
1402 sec
= h
->root
.u
.def
.section
;
1403 if (((r_type
== R_68K_PLT8
1404 || r_type
== R_68K_PLT16
1405 || r_type
== R_68K_PLT32
1406 || r_type
== R_68K_PLT8O
1407 || r_type
== R_68K_PLT16O
1408 || r_type
== R_68K_PLT32O
)
1409 && h
->plt
.offset
!= (bfd_vma
) -1
1410 && elf_hash_table (info
)->dynamic_sections_created
)
1411 || ((r_type
== R_68K_GOT8O
1412 || r_type
== R_68K_GOT16O
1413 || r_type
== R_68K_GOT32O
1414 || ((r_type
== R_68K_GOT8
1415 || r_type
== R_68K_GOT16
1416 || r_type
== R_68K_GOT32
)
1417 && strcmp (h
->root
.root
.string
,
1418 "_GLOBAL_OFFSET_TABLE_") != 0))
1419 && elf_hash_table (info
)->dynamic_sections_created
1421 || (! info
->symbolic
&& h
->dynindx
!= -1)
1422 || (h
->elf_link_hash_flags
1423 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
1425 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1426 || (h
->elf_link_hash_flags
1427 & ELF_LINK_HASH_DEF_REGULAR
) == 0)
1428 && ((input_section
->flags
& SEC_ALLOC
) != 0
1429 /* DWARF will emit R_68K_32 relocations in its
1430 sections against symbols defined externally
1431 in shared libraries. We can't do anything
1433 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
1434 && (h
->elf_link_hash_flags
1435 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0))
1436 && (r_type
== R_68K_8
1437 || r_type
== R_68K_16
1438 || r_type
== R_68K_32
1439 || r_type
== R_68K_PC8
1440 || r_type
== R_68K_PC16
1441 || r_type
== R_68K_PC32
)))
1443 /* In these cases, we don't need the relocation
1444 value. We check specially because in some
1445 obscure cases sec->output_section will be NULL. */
1449 relocation
= (h
->root
.u
.def
.value
1450 + sec
->output_section
->vma
1451 + sec
->output_offset
);
1453 else if (h
->root
.type
== bfd_link_hash_undefweak
)
1455 else if (info
->shared
1456 && !info
->no_undefined
1457 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
1461 if (!(info
->callbacks
->undefined_symbol
1462 (info
, h
->root
.root
.string
, input_bfd
,
1463 input_section
, rel
->r_offset
,
1464 (!info
->shared
|| info
->no_undefined
1465 || ELF_ST_VISIBILITY (h
->other
)))))
1476 /* Relocation is to the address of the entry for this symbol
1477 in the global offset table. */
1479 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
1485 /* Relocation is the offset of the entry for this symbol in
1486 the global offset table. */
1493 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1494 BFD_ASSERT (sgot
!= NULL
);
1499 off
= h
->got
.offset
;
1500 BFD_ASSERT (off
!= (bfd_vma
) -1);
1502 if (!elf_hash_table (info
)->dynamic_sections_created
1504 && (info
->symbolic
|| h
->dynindx
== -1)
1505 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
1507 /* This is actually a static link, or it is a
1508 -Bsymbolic link and the symbol is defined
1509 locally, or the symbol was forced to be local
1510 because of a version file.. We must initialize
1511 this entry in the global offset table. Since
1512 the offset must always be a multiple of 4, we
1513 use the least significant bit to record whether
1514 we have initialized it already.
1516 When doing a dynamic link, we create a .rela.got
1517 relocation entry to initialize the value. This
1518 is done in the finish_dynamic_symbol routine. */
1523 bfd_put_32 (output_bfd
, relocation
,
1524 sgot
->contents
+ off
);
1531 BFD_ASSERT (local_got_offsets
!= NULL
1532 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
1534 off
= local_got_offsets
[r_symndx
];
1536 /* The offset must always be a multiple of 4. We use
1537 the least significant bit to record whether we have
1538 already generated the necessary reloc. */
1543 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1548 Elf_Internal_Rela outrel
;
1551 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
1552 BFD_ASSERT (s
!= NULL
);
1554 outrel
.r_offset
= (sgot
->output_section
->vma
1555 + sgot
->output_offset
1557 outrel
.r_info
= ELF32_R_INFO (0, R_68K_RELATIVE
);
1558 outrel
.r_addend
= relocation
;
1560 loc
+= s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1561 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1564 local_got_offsets
[r_symndx
] |= 1;
1568 relocation
= sgot
->output_offset
+ off
;
1569 if (r_type
== R_68K_GOT8O
1570 || r_type
== R_68K_GOT16O
1571 || r_type
== R_68K_GOT32O
)
1573 /* This relocation does not use the addend. */
1577 relocation
+= sgot
->output_section
->vma
;
1584 /* Relocation is to the entry for this symbol in the
1585 procedure linkage table. */
1587 /* Resolve a PLTxx reloc against a local symbol directly,
1588 without using the procedure linkage table. */
1592 if (h
->plt
.offset
== (bfd_vma
) -1
1593 || !elf_hash_table (info
)->dynamic_sections_created
)
1595 /* We didn't make a PLT entry for this symbol. This
1596 happens when statically linking PIC code, or when
1597 using -Bsymbolic. */
1603 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1604 BFD_ASSERT (splt
!= NULL
);
1607 relocation
= (splt
->output_section
->vma
1608 + splt
->output_offset
1615 /* Relocation is the offset of the entry for this symbol in
1616 the procedure linkage table. */
1617 BFD_ASSERT (h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1);
1621 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1622 BFD_ASSERT (splt
!= NULL
);
1625 relocation
= h
->plt
.offset
;
1627 /* This relocation does not use the addend. */
1637 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) != 0))
1645 && (input_section
->flags
& SEC_ALLOC
) != 0
1646 && ((r_type
!= R_68K_PC8
1647 && r_type
!= R_68K_PC16
1648 && r_type
!= R_68K_PC32
)
1650 || (h
->elf_link_hash_flags
1651 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
1653 Elf_Internal_Rela outrel
;
1655 bfd_boolean skip
, relocate
;
1657 /* When generating a shared object, these relocations
1658 are copied into the output file to be resolved at run
1665 name
= (bfd_elf_string_from_elf_section
1667 elf_elfheader (input_bfd
)->e_shstrndx
,
1668 elf_section_data (input_section
)->rel_hdr
.sh_name
));
1672 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
1673 && strcmp (bfd_get_section_name (input_bfd
,
1677 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1678 BFD_ASSERT (sreloc
!= NULL
);
1685 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
1687 if (outrel
.r_offset
== (bfd_vma
) -1)
1689 else if (outrel
.r_offset
== (bfd_vma
) -2)
1690 skip
= TRUE
, relocate
= TRUE
;
1691 outrel
.r_offset
+= (input_section
->output_section
->vma
1692 + input_section
->output_offset
);
1695 memset (&outrel
, 0, sizeof outrel
);
1696 /* h->dynindx may be -1 if the symbol was marked to
1699 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1700 || (h
->elf_link_hash_flags
1701 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
1703 BFD_ASSERT (h
->dynindx
!= -1);
1704 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1705 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1709 if (r_type
== R_68K_32
)
1712 outrel
.r_info
= ELF32_R_INFO (0, R_68K_RELATIVE
);
1713 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1720 sec
= local_sections
[r_symndx
];
1723 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
1725 == bfd_link_hash_defweak
));
1726 sec
= h
->root
.u
.def
.section
;
1728 if (sec
!= NULL
&& bfd_is_abs_section (sec
))
1730 else if (sec
== NULL
|| sec
->owner
== NULL
)
1732 bfd_set_error (bfd_error_bad_value
);
1739 osec
= sec
->output_section
;
1740 indx
= elf_section_data (osec
)->dynindx
;
1741 BFD_ASSERT (indx
> 0);
1744 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
1745 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1749 loc
= sreloc
->contents
;
1750 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1751 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1753 /* This reloc will be computed at runtime, so there's no
1754 need to do anything now, except for R_68K_32
1755 relocations that have been turned into
1763 case R_68K_GNU_VTINHERIT
:
1764 case R_68K_GNU_VTENTRY
:
1765 /* These are no-ops in the end. */
1772 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1773 contents
, rel
->r_offset
,
1774 relocation
, rel
->r_addend
);
1776 if (r
!= bfd_reloc_ok
)
1781 case bfd_reloc_outofrange
:
1783 case bfd_reloc_overflow
:
1788 name
= h
->root
.root
.string
;
1791 name
= bfd_elf_string_from_elf_section (input_bfd
,
1792 symtab_hdr
->sh_link
,
1797 name
= bfd_section_name (input_bfd
, sec
);
1799 if (!(info
->callbacks
->reloc_overflow
1800 (info
, name
, howto
->name
, (bfd_vma
) 0,
1801 input_bfd
, input_section
, rel
->r_offset
)))
1812 /* Finish up dynamic symbol handling. We set the contents of various
1813 dynamic sections here. */
1816 elf_m68k_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1818 struct bfd_link_info
*info
;
1819 struct elf_link_hash_entry
*h
;
1820 Elf_Internal_Sym
*sym
;
1823 int plt_off1
, plt_off2
, plt_off3
;
1825 dynobj
= elf_hash_table (info
)->dynobj
;
1827 if (h
->plt
.offset
!= (bfd_vma
) -1)
1834 Elf_Internal_Rela rela
;
1837 /* This symbol has an entry in the procedure linkage table. Set
1840 BFD_ASSERT (h
->dynindx
!= -1);
1842 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1843 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
1844 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1845 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
1847 /* Get the index in the procedure linkage table which
1848 corresponds to this symbol. This is the index of this symbol
1849 in all the symbols for which we are making plt entries. The
1850 first entry in the procedure linkage table is reserved. */
1851 if ( CPU32_FLAG (output_bfd
))
1852 plt_index
= h
->plt
.offset
/ PLT_CPU32_ENTRY_SIZE
- 1;
1854 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1856 /* Get the offset into the .got table of the entry that
1857 corresponds to this function. Each .got entry is 4 bytes.
1858 The first three are reserved. */
1859 got_offset
= (plt_index
+ 3) * 4;
1861 if ( CPU32_FLAG (output_bfd
))
1863 /* Fill in the entry in the procedure linkage table. */
1864 memcpy (splt
->contents
+ h
->plt
.offset
, elf_cpu32_plt_entry
,
1865 PLT_CPU32_ENTRY_SIZE
);
1872 /* Fill in the entry in the procedure linkage table. */
1873 memcpy (splt
->contents
+ h
->plt
.offset
, elf_m68k_plt_entry
,
1880 /* The offset is relative to the first extension word. */
1881 bfd_put_32 (output_bfd
,
1882 (sgot
->output_section
->vma
1883 + sgot
->output_offset
1885 - (splt
->output_section
->vma
1886 + h
->plt
.offset
+ 2)),
1887 splt
->contents
+ h
->plt
.offset
+ plt_off1
);
1889 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
1890 splt
->contents
+ h
->plt
.offset
+ plt_off2
);
1891 bfd_put_32 (output_bfd
, - (h
->plt
.offset
+ plt_off3
),
1892 splt
->contents
+ h
->plt
.offset
+ plt_off3
);
1894 /* Fill in the entry in the global offset table. */
1895 bfd_put_32 (output_bfd
,
1896 (splt
->output_section
->vma
1897 + splt
->output_offset
1900 sgot
->contents
+ got_offset
);
1902 /* Fill in the entry in the .rela.plt section. */
1903 rela
.r_offset
= (sgot
->output_section
->vma
1904 + sgot
->output_offset
1906 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_JMP_SLOT
);
1908 loc
= srela
->contents
+ plt_index
* sizeof (Elf32_External_Rela
);
1909 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1911 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1913 /* Mark the symbol as undefined, rather than as defined in
1914 the .plt section. Leave the value alone. */
1915 sym
->st_shndx
= SHN_UNDEF
;
1919 if (h
->got
.offset
!= (bfd_vma
) -1)
1923 Elf_Internal_Rela rela
;
1926 /* This symbol has an entry in the global offset table. Set it
1929 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1930 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
1931 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1933 rela
.r_offset
= (sgot
->output_section
->vma
1934 + sgot
->output_offset
1935 + (h
->got
.offset
&~ (bfd_vma
) 1));
1937 /* If this is a -Bsymbolic link, and the symbol is defined
1938 locally, we just want to emit a RELATIVE reloc. Likewise if
1939 the symbol was forced to be local because of a version file.
1940 The entry in the global offset table will already have been
1941 initialized in the relocate_section function. */
1943 && (info
->symbolic
|| h
->dynindx
== -1)
1944 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
))
1946 rela
.r_info
= ELF32_R_INFO (0, R_68K_RELATIVE
);
1947 rela
.r_addend
= bfd_get_signed_32 (output_bfd
,
1949 + (h
->got
.offset
&~ (bfd_vma
) 1)));
1953 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1954 sgot
->contents
+ (h
->got
.offset
&~ (bfd_vma
) 1));
1955 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_GLOB_DAT
);
1959 loc
= srela
->contents
;
1960 loc
+= srela
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1961 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1964 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
1967 Elf_Internal_Rela rela
;
1970 /* This symbol needs a copy reloc. Set it up. */
1972 BFD_ASSERT (h
->dynindx
!= -1
1973 && (h
->root
.type
== bfd_link_hash_defined
1974 || h
->root
.type
== bfd_link_hash_defweak
));
1976 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
1978 BFD_ASSERT (s
!= NULL
);
1980 rela
.r_offset
= (h
->root
.u
.def
.value
1981 + h
->root
.u
.def
.section
->output_section
->vma
1982 + h
->root
.u
.def
.section
->output_offset
);
1983 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_COPY
);
1985 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1986 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1989 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1990 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1991 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
1992 sym
->st_shndx
= SHN_ABS
;
1997 /* Finish up the dynamic sections. */
2000 elf_m68k_finish_dynamic_sections (output_bfd
, info
)
2002 struct bfd_link_info
*info
;
2008 dynobj
= elf_hash_table (info
)->dynobj
;
2010 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
2011 BFD_ASSERT (sgot
!= NULL
);
2012 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
2014 if (elf_hash_table (info
)->dynamic_sections_created
)
2017 Elf32_External_Dyn
*dyncon
, *dynconend
;
2019 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2020 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
2022 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
2023 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
2024 for (; dyncon
< dynconend
; dyncon
++)
2026 Elf_Internal_Dyn dyn
;
2030 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2043 s
= bfd_get_section_by_name (output_bfd
, name
);
2044 BFD_ASSERT (s
!= NULL
);
2045 dyn
.d_un
.d_ptr
= s
->vma
;
2046 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2050 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
2051 BFD_ASSERT (s
!= NULL
);
2052 if (s
->_cooked_size
!= 0)
2053 dyn
.d_un
.d_val
= s
->_cooked_size
;
2055 dyn
.d_un
.d_val
= s
->_raw_size
;
2056 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2060 /* The procedure linkage table relocs (DT_JMPREL) should
2061 not be included in the overall relocs (DT_RELA).
2062 Therefore, we override the DT_RELASZ entry here to
2063 make it not include the JMPREL relocs. Since the
2064 linker script arranges for .rela.plt to follow all
2065 other relocation sections, we don't have to worry
2066 about changing the DT_RELA entry. */
2067 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
2070 if (s
->_cooked_size
!= 0)
2071 dyn
.d_un
.d_val
-= s
->_cooked_size
;
2073 dyn
.d_un
.d_val
-= s
->_raw_size
;
2075 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2080 /* Fill in the first entry in the procedure linkage table. */
2081 if (splt
->_raw_size
> 0)
2083 if (!CPU32_FLAG (output_bfd
))
2085 memcpy (splt
->contents
, elf_m68k_plt0_entry
, PLT_ENTRY_SIZE
);
2086 bfd_put_32 (output_bfd
,
2087 (sgot
->output_section
->vma
2088 + sgot
->output_offset
+ 4
2089 - (splt
->output_section
->vma
+ 2)),
2090 splt
->contents
+ 4);
2091 bfd_put_32 (output_bfd
,
2092 (sgot
->output_section
->vma
2093 + sgot
->output_offset
+ 8
2094 - (splt
->output_section
->vma
+ 10)),
2095 splt
->contents
+ 12);
2096 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
2101 memcpy (splt
->contents
, elf_cpu32_plt0_entry
, PLT_CPU32_ENTRY_SIZE
);
2102 bfd_put_32 (output_bfd
,
2103 (sgot
->output_section
->vma
2104 + sgot
->output_offset
+ 4
2105 - (splt
->output_section
->vma
+ 2)),
2106 splt
->contents
+ 4);
2107 bfd_put_32 (output_bfd
,
2108 (sgot
->output_section
->vma
2109 + sgot
->output_offset
+ 8
2110 - (splt
->output_section
->vma
+ 10)),
2111 splt
->contents
+ 12);
2112 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
2113 = PLT_CPU32_ENTRY_SIZE
;
2118 /* Fill in the first three entries in the global offset table. */
2119 if (sgot
->_raw_size
> 0)
2122 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
2124 bfd_put_32 (output_bfd
,
2125 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
2127 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
2128 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
2131 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
2136 /* Given a .data section and a .emreloc in-memory section, store
2137 relocation information into the .emreloc section which can be
2138 used at runtime to relocate the section. This is called by the
2139 linker when the --embedded-relocs switch is used. This is called
2140 after the add_symbols entry point has been called for all the
2141 objects, and before the final_link entry point is called. */
2144 bfd_m68k_elf32_create_embedded_relocs (abfd
, info
, datasec
, relsec
, errmsg
)
2146 struct bfd_link_info
*info
;
2151 Elf_Internal_Shdr
*symtab_hdr
;
2152 Elf_Internal_Sym
*isymbuf
= NULL
;
2153 Elf_Internal_Rela
*internal_relocs
= NULL
;
2154 Elf_Internal_Rela
*irel
, *irelend
;
2158 BFD_ASSERT (! info
->relocateable
);
2162 if (datasec
->reloc_count
== 0)
2165 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2167 /* Get a copy of the native relocations. */
2168 internal_relocs
= (_bfd_elf32_link_read_relocs
2169 (abfd
, datasec
, (PTR
) NULL
, (Elf_Internal_Rela
*) NULL
,
2170 info
->keep_memory
));
2171 if (internal_relocs
== NULL
)
2174 amt
= (bfd_size_type
) datasec
->reloc_count
* 12;
2175 relsec
->contents
= (bfd_byte
*) bfd_alloc (abfd
, amt
);
2176 if (relsec
->contents
== NULL
)
2179 p
= relsec
->contents
;
2181 irelend
= internal_relocs
+ datasec
->reloc_count
;
2182 for (irel
= internal_relocs
; irel
< irelend
; irel
++, p
+= 12)
2184 asection
*targetsec
;
2186 /* We are going to write a four byte longword into the runtime
2187 reloc section. The longword will be the address in the data
2188 section which must be relocated. It is followed by the name
2189 of the target section NUL-padded or truncated to 8
2192 /* We can only relocate absolute longword relocs at run time. */
2193 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_68K_32
)
2195 *errmsg
= _("unsupported reloc type");
2196 bfd_set_error (bfd_error_bad_value
);
2200 /* Get the target section referred to by the reloc. */
2201 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
2203 /* A local symbol. */
2204 Elf_Internal_Sym
*isym
;
2206 /* Read this BFD's local symbols if we haven't done so already. */
2207 if (isymbuf
== NULL
)
2209 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
2210 if (isymbuf
== NULL
)
2211 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
2212 symtab_hdr
->sh_info
, 0,
2214 if (isymbuf
== NULL
)
2218 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
2219 targetsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2224 struct elf_link_hash_entry
*h
;
2226 /* An external symbol. */
2227 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
2228 h
= elf_sym_hashes (abfd
)[indx
];
2229 BFD_ASSERT (h
!= NULL
);
2230 if (h
->root
.type
== bfd_link_hash_defined
2231 || h
->root
.type
== bfd_link_hash_defweak
)
2232 targetsec
= h
->root
.u
.def
.section
;
2237 bfd_put_32 (abfd
, irel
->r_offset
+ datasec
->output_offset
, p
);
2238 memset (p
+ 4, 0, 8);
2239 if (targetsec
!= NULL
)
2240 strncpy (p
+ 4, targetsec
->output_section
->name
, 8);
2243 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
2245 if (internal_relocs
!= NULL
2246 && elf_section_data (datasec
)->relocs
!= internal_relocs
)
2247 free (internal_relocs
);
2251 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
2253 if (internal_relocs
!= NULL
2254 && elf_section_data (datasec
)->relocs
!= internal_relocs
)
2255 free (internal_relocs
);
2259 static enum elf_reloc_type_class
2260 elf32_m68k_reloc_type_class (rela
)
2261 const Elf_Internal_Rela
*rela
;
2263 switch ((int) ELF32_R_TYPE (rela
->r_info
))
2265 case R_68K_RELATIVE
:
2266 return reloc_class_relative
;
2267 case R_68K_JMP_SLOT
:
2268 return reloc_class_plt
;
2270 return reloc_class_copy
;
2272 return reloc_class_normal
;
2276 #define TARGET_BIG_SYM bfd_elf32_m68k_vec
2277 #define TARGET_BIG_NAME "elf32-m68k"
2278 #define ELF_MACHINE_CODE EM_68K
2279 #define ELF_MAXPAGESIZE 0x2000
2280 #define elf_backend_create_dynamic_sections \
2281 _bfd_elf_create_dynamic_sections
2282 #define bfd_elf32_bfd_link_hash_table_create \
2283 elf_m68k_link_hash_table_create
2284 #define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link
2286 #define elf_backend_check_relocs elf_m68k_check_relocs
2287 #define elf_backend_adjust_dynamic_symbol \
2288 elf_m68k_adjust_dynamic_symbol
2289 #define elf_backend_size_dynamic_sections \
2290 elf_m68k_size_dynamic_sections
2291 #define elf_backend_relocate_section elf_m68k_relocate_section
2292 #define elf_backend_finish_dynamic_symbol \
2293 elf_m68k_finish_dynamic_symbol
2294 #define elf_backend_finish_dynamic_sections \
2295 elf_m68k_finish_dynamic_sections
2296 #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook
2297 #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook
2298 #define bfd_elf32_bfd_merge_private_bfd_data \
2299 elf32_m68k_merge_private_bfd_data
2300 #define bfd_elf32_bfd_set_private_flags \
2301 elf32_m68k_set_private_flags
2302 #define bfd_elf32_bfd_print_private_bfd_data \
2303 elf32_m68k_print_private_bfd_data
2304 #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class
2306 #define elf_backend_can_gc_sections 1
2307 #define elf_backend_can_refcount 1
2308 #define elf_backend_want_got_plt 1
2309 #define elf_backend_plt_readonly 1
2310 #define elf_backend_want_plt_sym 0
2311 #define elf_backend_got_header_size 12
2312 #define elf_backend_rela_normal 1
2314 #include "elf32-target.h"