1 /* Motorola 68k series support for 32-bit ELF
2 Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
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
*, Elf32_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 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 boolean elf_m68k_gc_sweep_hook
43 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
44 const Elf_Internal_Rela
*));
45 static boolean elf_m68k_adjust_dynamic_symbol
46 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
47 static boolean elf_m68k_size_dynamic_sections
48 PARAMS ((bfd
*, struct bfd_link_info
*));
49 static boolean elf_m68k_relocate_section
50 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
51 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
52 static boolean elf_m68k_finish_dynamic_symbol
53 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
55 static boolean elf_m68k_finish_dynamic_sections
56 PARAMS ((bfd
*, struct bfd_link_info
*));
58 static boolean elf32_m68k_set_private_flags
59 PARAMS ((bfd
*, flagword
));
60 static boolean elf32_m68k_merge_private_bfd_data
61 PARAMS ((bfd
*, bfd
*));
62 static boolean elf32_m68k_print_private_bfd_data
63 PARAMS ((bfd
*, PTR
));
64 static enum elf_reloc_type_class elf32_m68k_reloc_type_class
65 PARAMS ((const Elf_Internal_Rela
*));
67 static reloc_howto_type howto_table
[] = {
68 HOWTO(R_68K_NONE
, 0, 0, 0, false,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_NONE", false, 0, 0x00000000,false),
69 HOWTO(R_68K_32
, 0, 2,32, false,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_32", false, 0, 0xffffffff,false),
70 HOWTO(R_68K_16
, 0, 1,16, false,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_16", false, 0, 0x0000ffff,false),
71 HOWTO(R_68K_8
, 0, 0, 8, false,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_8", false, 0, 0x000000ff,false),
72 HOWTO(R_68K_PC32
, 0, 2,32, true, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_PC32", false, 0, 0xffffffff,true),
73 HOWTO(R_68K_PC16
, 0, 1,16, true, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PC16", false, 0, 0x0000ffff,true),
74 HOWTO(R_68K_PC8
, 0, 0, 8, true, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PC8", false, 0, 0x000000ff,true),
75 HOWTO(R_68K_GOT32
, 0, 2,32, true, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_GOT32", false, 0, 0xffffffff,true),
76 HOWTO(R_68K_GOT16
, 0, 1,16, true, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_GOT16", false, 0, 0x0000ffff,true),
77 HOWTO(R_68K_GOT8
, 0, 0, 8, true, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_GOT8", false, 0, 0x000000ff,true),
78 HOWTO(R_68K_GOT32O
, 0, 2,32, false,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_GOT32O", false, 0, 0xffffffff,false),
79 HOWTO(R_68K_GOT16O
, 0, 1,16, false,0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_GOT16O", false, 0, 0x0000ffff,false),
80 HOWTO(R_68K_GOT8O
, 0, 0, 8, false,0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_GOT8O", false, 0, 0x000000ff,false),
81 HOWTO(R_68K_PLT32
, 0, 2,32, true, 0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_PLT32", false, 0, 0xffffffff,true),
82 HOWTO(R_68K_PLT16
, 0, 1,16, true, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PLT16", false, 0, 0x0000ffff,true),
83 HOWTO(R_68K_PLT8
, 0, 0, 8, true, 0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PLT8", false, 0, 0x000000ff,true),
84 HOWTO(R_68K_PLT32O
, 0, 2,32, false,0, complain_overflow_bitfield
, bfd_elf_generic_reloc
, "R_68K_PLT32O", false, 0, 0xffffffff,false),
85 HOWTO(R_68K_PLT16O
, 0, 1,16, false,0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PLT16O", false, 0, 0x0000ffff,false),
86 HOWTO(R_68K_PLT8O
, 0, 0, 8, false,0, complain_overflow_signed
, bfd_elf_generic_reloc
, "R_68K_PLT8O", false, 0, 0x000000ff,false),
87 HOWTO(R_68K_COPY
, 0, 0, 0, false,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_COPY", false, 0, 0xffffffff,false),
88 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),
89 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),
90 HOWTO(R_68K_RELATIVE
, 0, 2,32, false,0, complain_overflow_dont
, bfd_elf_generic_reloc
, "R_68K_RELATIVE", false, 0, 0xffffffff,false),
91 /* GNU extension to record C++ vtable hierarchy */
92 HOWTO (R_68K_GNU_VTINHERIT
, /* type */
94 2, /* size (0 = byte, 1 = short, 2 = long) */
96 false, /* pc_relative */
98 complain_overflow_dont
, /* complain_on_overflow */
99 NULL
, /* special_function */
100 "R_68K_GNU_VTINHERIT", /* name */
101 false, /* partial_inplace */
105 /* GNU extension to record C++ vtable member usage */
106 HOWTO (R_68K_GNU_VTENTRY
, /* type */
108 2, /* size (0 = byte, 1 = short, 2 = long) */
110 false, /* pc_relative */
112 complain_overflow_dont
, /* complain_on_overflow */
113 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
114 "R_68K_GNU_VTENTRY", /* name */
115 false, /* partial_inplace */
122 rtype_to_howto (abfd
, cache_ptr
, dst
)
123 bfd
*abfd ATTRIBUTE_UNUSED
;
125 Elf_Internal_Rela
*dst
;
127 BFD_ASSERT (ELF32_R_TYPE(dst
->r_info
) < (unsigned int) R_68K_max
);
128 cache_ptr
->howto
= &howto_table
[ELF32_R_TYPE(dst
->r_info
)];
131 #define elf_info_to_howto rtype_to_howto
135 bfd_reloc_code_real_type bfd_val
;
138 { BFD_RELOC_NONE
, R_68K_NONE
},
139 { BFD_RELOC_32
, R_68K_32
},
140 { BFD_RELOC_16
, R_68K_16
},
141 { BFD_RELOC_8
, R_68K_8
},
142 { BFD_RELOC_32_PCREL
, R_68K_PC32
},
143 { BFD_RELOC_16_PCREL
, R_68K_PC16
},
144 { BFD_RELOC_8_PCREL
, R_68K_PC8
},
145 { BFD_RELOC_32_GOT_PCREL
, R_68K_GOT32
},
146 { BFD_RELOC_16_GOT_PCREL
, R_68K_GOT16
},
147 { BFD_RELOC_8_GOT_PCREL
, R_68K_GOT8
},
148 { BFD_RELOC_32_GOTOFF
, R_68K_GOT32O
},
149 { BFD_RELOC_16_GOTOFF
, R_68K_GOT16O
},
150 { BFD_RELOC_8_GOTOFF
, R_68K_GOT8O
},
151 { BFD_RELOC_32_PLT_PCREL
, R_68K_PLT32
},
152 { BFD_RELOC_16_PLT_PCREL
, R_68K_PLT16
},
153 { BFD_RELOC_8_PLT_PCREL
, R_68K_PLT8
},
154 { BFD_RELOC_32_PLTOFF
, R_68K_PLT32O
},
155 { BFD_RELOC_16_PLTOFF
, R_68K_PLT16O
},
156 { BFD_RELOC_8_PLTOFF
, R_68K_PLT8O
},
157 { BFD_RELOC_NONE
, R_68K_COPY
},
158 { BFD_RELOC_68K_GLOB_DAT
, R_68K_GLOB_DAT
},
159 { BFD_RELOC_68K_JMP_SLOT
, R_68K_JMP_SLOT
},
160 { BFD_RELOC_68K_RELATIVE
, R_68K_RELATIVE
},
161 { BFD_RELOC_CTOR
, R_68K_32
},
162 { BFD_RELOC_VTABLE_INHERIT
, R_68K_GNU_VTINHERIT
},
163 { BFD_RELOC_VTABLE_ENTRY
, R_68K_GNU_VTENTRY
},
166 static reloc_howto_type
*
167 reloc_type_lookup (abfd
, code
)
168 bfd
*abfd ATTRIBUTE_UNUSED
;
169 bfd_reloc_code_real_type code
;
172 for (i
= 0; i
< sizeof (reloc_map
) / sizeof (reloc_map
[0]); i
++)
174 if (reloc_map
[i
].bfd_val
== code
)
175 return &howto_table
[reloc_map
[i
].elf_val
];
180 #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup
181 #define ELF_ARCH bfd_arch_m68k
182 /* end code generated by elf.el */
186 /* Functions for the m68k ELF linker. */
188 /* The name of the dynamic interpreter. This is put in the .interp
191 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
193 /* The size in bytes of an entry in the procedure linkage table. */
195 #define PLT_ENTRY_SIZE 20
197 /* The first entry in a procedure linkage table looks like this. See
198 the SVR4 ABI m68k supplement to see how this works. */
200 static const bfd_byte elf_m68k_plt0_entry
[PLT_ENTRY_SIZE
] =
202 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
203 0, 0, 0, 0, /* replaced with offset to .got + 4. */
204 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */
205 0, 0, 0, 0, /* replaced with offset to .got + 8. */
206 0, 0, 0, 0 /* pad out to 20 bytes. */
209 /* Subsequent entries in a procedure linkage table look like this. */
211 static const bfd_byte elf_m68k_plt_entry
[PLT_ENTRY_SIZE
] =
213 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */
214 0, 0, 0, 0, /* replaced with offset to symbol's .got entry. */
215 0x2f, 0x3c, /* move.l #offset,-(%sp) */
216 0, 0, 0, 0, /* replaced with offset into relocation table. */
217 0x60, 0xff, /* bra.l .plt */
218 0, 0, 0, 0 /* replaced with offset to start of .plt. */
221 #define CPU32_FLAG(abfd) (elf_elfheader (abfd)->e_flags & EF_CPU32)
223 #define PLT_CPU32_ENTRY_SIZE 24
224 /* Procedure linkage table entries for the cpu32 */
225 static const bfd_byte elf_cpu32_plt0_entry
[PLT_CPU32_ENTRY_SIZE
] =
227 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
228 0, 0, 0, 0, /* replaced with offset to .got + 4. */
229 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
230 0, 0, 0, 0, /* replace with offset to .got +8. */
231 0x4e, 0xd1, /* jmp %a1@ */
232 0, 0, 0, 0, /* pad out to 24 bytes. */
236 static const bfd_byte elf_cpu32_plt_entry
[PLT_CPU32_ENTRY_SIZE
] =
238 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
239 0, 0, 0, 0, /* replaced with offset to symbol's .got entry. */
240 0x4e, 0xd1, /* jmp %a1@ */
241 0x2f, 0x3c, /* move.l #offset,-(%sp) */
242 0, 0, 0, 0, /* replaced with offset into relocation table. */
243 0x60, 0xff, /* bra.l .plt */
244 0, 0, 0, 0, /* replaced with offset to start of .plt. */
248 /* The m68k linker needs to keep track of the number of relocs that it
249 decides to copy in check_relocs for each symbol. This is so that it
250 can discard PC relative relocs if it doesn't need them when linking
251 with -Bsymbolic. We store the information in a field extending the
252 regular ELF linker hash table. */
254 /* This structure keeps track of the number of PC relative relocs we have
255 copied for a given symbol. */
257 struct elf_m68k_pcrel_relocs_copied
260 struct elf_m68k_pcrel_relocs_copied
*next
;
261 /* A section in dynobj. */
263 /* Number of relocs copied in this section. */
267 /* m68k ELF linker hash entry. */
269 struct elf_m68k_link_hash_entry
271 struct elf_link_hash_entry root
;
273 /* Number of PC relative relocs copied for this symbol. */
274 struct elf_m68k_pcrel_relocs_copied
*pcrel_relocs_copied
;
277 /* m68k ELF linker hash table. */
279 struct elf_m68k_link_hash_table
281 struct elf_link_hash_table root
;
284 /* Declare this now that the above structures are defined. */
286 static boolean elf_m68k_discard_copies
287 PARAMS ((struct elf_m68k_link_hash_entry
*, PTR
));
289 /* Traverse an m68k ELF linker hash table. */
291 #define elf_m68k_link_hash_traverse(table, func, info) \
292 (elf_link_hash_traverse \
294 (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
297 /* Get the m68k ELF linker hash table from a link_info structure. */
299 #define elf_m68k_hash_table(p) \
300 ((struct elf_m68k_link_hash_table *) (p)->hash)
302 /* Create an entry in an m68k ELF linker hash table. */
304 static struct bfd_hash_entry
*
305 elf_m68k_link_hash_newfunc (entry
, table
, string
)
306 struct bfd_hash_entry
*entry
;
307 struct bfd_hash_table
*table
;
310 struct elf_m68k_link_hash_entry
*ret
=
311 (struct elf_m68k_link_hash_entry
*) entry
;
313 /* Allocate the structure if it has not already been allocated by a
315 if (ret
== (struct elf_m68k_link_hash_entry
*) NULL
)
316 ret
= ((struct elf_m68k_link_hash_entry
*)
317 bfd_hash_allocate (table
,
318 sizeof (struct elf_m68k_link_hash_entry
)));
319 if (ret
== (struct elf_m68k_link_hash_entry
*) NULL
)
320 return (struct bfd_hash_entry
*) ret
;
322 /* Call the allocation method of the superclass. */
323 ret
= ((struct elf_m68k_link_hash_entry
*)
324 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
326 if (ret
!= (struct elf_m68k_link_hash_entry
*) NULL
)
328 ret
->pcrel_relocs_copied
= NULL
;
331 return (struct bfd_hash_entry
*) ret
;
334 /* Create an m68k ELF linker hash table. */
336 static struct bfd_link_hash_table
*
337 elf_m68k_link_hash_table_create (abfd
)
340 struct elf_m68k_link_hash_table
*ret
;
341 bfd_size_type amt
= sizeof (struct elf_m68k_link_hash_table
);
343 ret
= (struct elf_m68k_link_hash_table
*) bfd_malloc (amt
);
344 if (ret
== (struct elf_m68k_link_hash_table
*) NULL
)
347 if (! _bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
348 elf_m68k_link_hash_newfunc
))
354 return &ret
->root
.root
;
357 /* Keep m68k-specific flags in the ELF header */
359 elf32_m68k_set_private_flags (abfd
, flags
)
363 elf_elfheader (abfd
)->e_flags
= flags
;
364 elf_flags_init (abfd
) = true;
368 /* Merge backend specific data from an object file to the output
369 object file when linking. */
371 elf32_m68k_merge_private_bfd_data (ibfd
, obfd
)
378 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
379 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
382 in_flags
= elf_elfheader (ibfd
)->e_flags
;
383 out_flags
= elf_elfheader (obfd
)->e_flags
;
385 if (!elf_flags_init (obfd
))
387 elf_flags_init (obfd
) = true;
388 elf_elfheader (obfd
)->e_flags
= in_flags
;
394 /* Display the flags field */
396 elf32_m68k_print_private_bfd_data (abfd
, ptr
)
400 FILE *file
= (FILE *) ptr
;
402 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
404 /* Print normal ELF private data. */
405 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
407 /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
409 /* xgettext:c-format */
410 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
412 if (elf_elfheader (abfd
)->e_flags
& EF_CPU32
)
413 fprintf (file
, _(" [cpu32]"));
415 if (elf_elfheader (abfd
)->e_flags
& EF_M68000
)
416 fprintf (file
, _(" [m68000]"));
422 /* Look through the relocs for a section during the first phase, and
423 allocate space in the global offset table or procedure linkage
427 elf_m68k_check_relocs (abfd
, info
, sec
, relocs
)
429 struct bfd_link_info
*info
;
431 const Elf_Internal_Rela
*relocs
;
434 Elf_Internal_Shdr
*symtab_hdr
;
435 struct elf_link_hash_entry
**sym_hashes
;
436 bfd_signed_vma
*local_got_refcounts
;
437 const Elf_Internal_Rela
*rel
;
438 const Elf_Internal_Rela
*rel_end
;
443 if (info
->relocateable
)
446 dynobj
= elf_hash_table (info
)->dynobj
;
447 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
448 sym_hashes
= elf_sym_hashes (abfd
);
449 local_got_refcounts
= elf_local_got_refcounts (abfd
);
455 rel_end
= relocs
+ sec
->reloc_count
;
456 for (rel
= relocs
; rel
< rel_end
; rel
++)
458 unsigned long r_symndx
;
459 struct elf_link_hash_entry
*h
;
461 r_symndx
= ELF32_R_SYM (rel
->r_info
);
463 if (r_symndx
< symtab_hdr
->sh_info
)
466 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
468 switch (ELF32_R_TYPE (rel
->r_info
))
474 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
480 /* This symbol requires a global offset table entry. */
484 /* Create the .got section. */
485 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
486 if (!_bfd_elf_create_got_section (dynobj
, info
))
492 sgot
= bfd_get_section_by_name (dynobj
, ".got");
493 BFD_ASSERT (sgot
!= NULL
);
497 && (h
!= NULL
|| info
->shared
))
499 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
502 srelgot
= bfd_make_section (dynobj
, ".rela.got");
504 || !bfd_set_section_flags (dynobj
, srelgot
,
511 || !bfd_set_section_alignment (dynobj
, srelgot
, 2))
518 if (h
->got
.refcount
== 0)
520 /* Make sure this symbol is output as a dynamic symbol. */
521 if (h
->dynindx
== -1)
523 if (!bfd_elf32_link_record_dynamic_symbol (info
, h
))
527 /* Allocate space in the .got section. */
528 sgot
->_raw_size
+= 4;
529 /* Allocate relocation space. */
530 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
536 /* This is a global offset table entry for a local symbol. */
537 if (local_got_refcounts
== NULL
)
541 size
= symtab_hdr
->sh_info
;
542 size
*= sizeof (bfd_signed_vma
);
543 local_got_refcounts
= ((bfd_signed_vma
*)
544 bfd_zalloc (abfd
, size
));
545 if (local_got_refcounts
== NULL
)
547 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
549 if (local_got_refcounts
[r_symndx
] == 0)
551 sgot
->_raw_size
+= 4;
554 /* If we are generating a shared object, we need to
555 output a R_68K_RELATIVE reloc so that the dynamic
556 linker can adjust this GOT entry. */
557 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
560 local_got_refcounts
[r_symndx
]++;
567 /* This symbol requires a procedure linkage table entry. We
568 actually build the entry in adjust_dynamic_symbol,
569 because this might be a case of linking PIC code which is
570 never referenced by a dynamic object, in which case we
571 don't need to generate a procedure linkage table entry
574 /* If this is a local symbol, we resolve it directly without
575 creating a procedure linkage table entry. */
579 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
586 /* This symbol requires a procedure linkage table entry. */
590 /* It does not make sense to have this relocation for a
591 local symbol. FIXME: does it? How to handle it if
592 it does make sense? */
593 bfd_set_error (bfd_error_bad_value
);
597 /* Make sure this symbol is output as a dynamic symbol. */
598 if (h
->dynindx
== -1)
600 if (!bfd_elf32_link_record_dynamic_symbol (info
, h
))
604 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
611 /* If we are creating a shared library and this is not a local
612 symbol, we need to copy the reloc into the shared library.
613 However when linking with -Bsymbolic and this is a global
614 symbol which is defined in an object we are including in the
615 link (i.e., DEF_REGULAR is set), then we can resolve the
616 reloc directly. At this point we have not seen all the input
617 files, so it is possible that DEF_REGULAR is not set now but
618 will be set later (it is never cleared). We account for that
619 possibility below by storing information in the
620 pcrel_relocs_copied field of the hash table entry. */
622 && (sec
->flags
& SEC_ALLOC
) != 0
625 || (h
->elf_link_hash_flags
626 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
630 /* Make sure a plt entry is created for this symbol if
631 it turns out to be a function defined by a dynamic
643 /* Make sure a plt entry is created for this symbol if it
644 turns out to be a function defined by a dynamic object. */
648 /* If we are creating a shared library, we need to copy the
649 reloc into the shared library. */
651 && (sec
->flags
& SEC_ALLOC
) != 0)
653 /* When creating a shared object, we must copy these
654 reloc types into the output file. We create a reloc
655 section in dynobj and make room for this reloc. */
660 name
= (bfd_elf_string_from_elf_section
662 elf_elfheader (abfd
)->e_shstrndx
,
663 elf_section_data (sec
)->rel_hdr
.sh_name
));
667 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
668 && strcmp (bfd_get_section_name (abfd
, sec
),
671 sreloc
= bfd_get_section_by_name (dynobj
, name
);
674 sreloc
= bfd_make_section (dynobj
, name
);
676 || !bfd_set_section_flags (dynobj
, sreloc
,
683 || !bfd_set_section_alignment (dynobj
, sreloc
, 2))
686 if (sec
->flags
& SEC_READONLY
)
687 info
->flags
|= DF_TEXTREL
;
690 sreloc
->_raw_size
+= sizeof (Elf32_External_Rela
);
692 /* If we are linking with -Bsymbolic, we count the number of
693 PC relative relocations we have entered for this symbol,
694 so that we can discard them again if the symbol is later
695 defined by a regular object. Note that this function is
696 only called if we are using an m68kelf linker hash table,
697 which means that h is really a pointer to an
698 elf_m68k_link_hash_entry. */
699 if ((ELF32_R_TYPE (rel
->r_info
) == R_68K_PC8
700 || ELF32_R_TYPE (rel
->r_info
) == R_68K_PC16
701 || ELF32_R_TYPE (rel
->r_info
) == R_68K_PC32
)
704 struct elf_m68k_link_hash_entry
*eh
;
705 struct elf_m68k_pcrel_relocs_copied
*p
;
707 eh
= (struct elf_m68k_link_hash_entry
*) h
;
709 for (p
= eh
->pcrel_relocs_copied
; p
!= NULL
; p
= p
->next
)
710 if (p
->section
== sreloc
)
715 p
= ((struct elf_m68k_pcrel_relocs_copied
*)
716 bfd_alloc (dynobj
, (bfd_size_type
) sizeof *p
));
719 p
->next
= eh
->pcrel_relocs_copied
;
720 eh
->pcrel_relocs_copied
= p
;
731 /* This relocation describes the C++ object vtable hierarchy.
732 Reconstruct it for later use during GC. */
733 case R_68K_GNU_VTINHERIT
:
734 if (!_bfd_elf32_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
738 /* This relocation describes which C++ vtable entries are actually
739 used. Record for later use during GC. */
740 case R_68K_GNU_VTENTRY
:
741 if (!_bfd_elf32_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
753 /* Return the section that should be marked against GC for a given
757 elf_m68k_gc_mark_hook (sec
, info
, rel
, h
, sym
)
759 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
760 Elf_Internal_Rela
*rel
;
761 struct elf_link_hash_entry
*h
;
762 Elf_Internal_Sym
*sym
;
766 switch (ELF32_R_TYPE (rel
->r_info
))
768 case R_68K_GNU_VTINHERIT
:
769 case R_68K_GNU_VTENTRY
:
773 switch (h
->root
.type
)
778 case bfd_link_hash_defined
:
779 case bfd_link_hash_defweak
:
780 return h
->root
.u
.def
.section
;
782 case bfd_link_hash_common
:
783 return h
->root
.u
.c
.p
->section
;
788 return bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
793 /* Update the got entry reference counts for the section being removed. */
796 elf_m68k_gc_sweep_hook (abfd
, info
, sec
, relocs
)
798 struct bfd_link_info
*info
;
800 const Elf_Internal_Rela
*relocs
;
802 Elf_Internal_Shdr
*symtab_hdr
;
803 struct elf_link_hash_entry
**sym_hashes
;
804 bfd_signed_vma
*local_got_refcounts
;
805 const Elf_Internal_Rela
*rel
, *relend
;
806 unsigned long r_symndx
;
807 struct elf_link_hash_entry
*h
;
812 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
813 sym_hashes
= elf_sym_hashes (abfd
);
814 local_got_refcounts
= elf_local_got_refcounts (abfd
);
816 dynobj
= elf_hash_table (info
)->dynobj
;
820 sgot
= bfd_get_section_by_name (dynobj
, ".got");
821 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
823 relend
= relocs
+ sec
->reloc_count
;
824 for (rel
= relocs
; rel
< relend
; rel
++)
826 switch (ELF32_R_TYPE (rel
->r_info
))
834 r_symndx
= ELF32_R_SYM (rel
->r_info
);
835 if (r_symndx
>= symtab_hdr
->sh_info
)
837 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
838 if (h
->got
.refcount
> 0)
841 if (h
->got
.refcount
== 0)
843 /* We don't need the .got entry any more. */
844 sgot
->_raw_size
-= 4;
845 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
849 else if (local_got_refcounts
!= NULL
)
851 if (local_got_refcounts
[r_symndx
] > 0)
853 --local_got_refcounts
[r_symndx
];
854 if (local_got_refcounts
[r_symndx
] == 0)
856 /* We don't need the .got entry any more. */
857 sgot
->_raw_size
-= 4;
859 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
877 r_symndx
= ELF32_R_SYM (rel
->r_info
);
878 if (r_symndx
>= symtab_hdr
->sh_info
)
880 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
881 if (h
->plt
.refcount
> 0)
894 /* Adjust a symbol defined by a dynamic object and referenced by a
895 regular object. The current definition is in some section of the
896 dynamic object, but we're not including those sections. We have to
897 change the definition to something the rest of the link can
901 elf_m68k_adjust_dynamic_symbol (info
, h
)
902 struct bfd_link_info
*info
;
903 struct elf_link_hash_entry
*h
;
907 unsigned int power_of_two
;
909 dynobj
= elf_hash_table (info
)->dynobj
;
911 /* Make sure we know what is going on here. */
912 BFD_ASSERT (dynobj
!= NULL
913 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
914 || h
->weakdef
!= NULL
915 || ((h
->elf_link_hash_flags
916 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
917 && (h
->elf_link_hash_flags
918 & ELF_LINK_HASH_REF_REGULAR
) != 0
919 && (h
->elf_link_hash_flags
920 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
922 /* If this is a function, put it in the procedure linkage table. We
923 will fill in the contents of the procedure linkage table later,
924 when we know the address of the .got section. */
925 if (h
->type
== STT_FUNC
926 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
929 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) == 0
930 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) == 0
931 /* We must always create the plt entry if it was referenced
932 by a PLTxxO relocation. In this case we already recorded
933 it as a dynamic symbol. */
936 /* This case can occur if we saw a PLTxx reloc in an input
937 file, but the symbol was never referred to by a dynamic
938 object. In such a case, we don't actually need to build
939 a procedure linkage table, and we can just do a PCxx
941 BFD_ASSERT ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0);
942 h
->plt
.offset
= (bfd_vma
) -1;
946 /* GC may have rendered this entry unused. */
947 if (h
->plt
.refcount
<= 0)
949 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
950 h
->plt
.offset
= (bfd_vma
) -1;
954 /* Make sure this symbol is output as a dynamic symbol. */
955 if (h
->dynindx
== -1)
957 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
961 s
= bfd_get_section_by_name (dynobj
, ".plt");
962 BFD_ASSERT (s
!= NULL
);
964 /* If this is the first .plt entry, make room for the special
966 if (s
->_raw_size
== 0)
968 if (CPU32_FLAG (dynobj
))
969 s
->_raw_size
+= PLT_CPU32_ENTRY_SIZE
;
971 s
->_raw_size
+= PLT_ENTRY_SIZE
;
974 /* If this symbol is not defined in a regular file, and we are
975 not generating a shared library, then set the symbol to this
976 location in the .plt. This is required to make function
977 pointers compare as equal between the normal executable and
978 the shared library. */
980 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
982 h
->root
.u
.def
.section
= s
;
983 h
->root
.u
.def
.value
= s
->_raw_size
;
986 h
->plt
.offset
= s
->_raw_size
;
988 /* Make room for this entry. */
989 if (CPU32_FLAG (dynobj
))
990 s
->_raw_size
+= PLT_CPU32_ENTRY_SIZE
;
992 s
->_raw_size
+= PLT_ENTRY_SIZE
;
994 /* We also need to make an entry in the .got.plt section, which
995 will be placed in the .got section by the linker script. */
997 s
= bfd_get_section_by_name (dynobj
, ".got.plt");
998 BFD_ASSERT (s
!= NULL
);
1001 /* We also need to make an entry in the .rela.plt section. */
1003 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1004 BFD_ASSERT (s
!= NULL
);
1005 s
->_raw_size
+= sizeof (Elf32_External_Rela
);
1010 /* Reinitialize the plt offset now that it is not used as a reference
1012 h
->plt
.offset
= (bfd_vma
) -1;
1014 /* If this is a weak symbol, and there is a real definition, the
1015 processor independent code will have arranged for us to see the
1016 real definition first, and we can just use the same value. */
1017 if (h
->weakdef
!= NULL
)
1019 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1020 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1021 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1022 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1026 /* This is a reference to a symbol defined by a dynamic object which
1027 is not a function. */
1029 /* If we are creating a shared library, we must presume that the
1030 only references to the symbol are via the global offset table.
1031 For such cases we need not do anything here; the relocations will
1032 be handled correctly by relocate_section. */
1036 /* We must allocate the symbol in our .dynbss section, which will
1037 become part of the .bss section of the executable. There will be
1038 an entry for this symbol in the .dynsym section. The dynamic
1039 object will contain position independent code, so all references
1040 from the dynamic object to this symbol will go through the global
1041 offset table. The dynamic linker will use the .dynsym entry to
1042 determine the address it must put in the global offset table, so
1043 both the dynamic object and the regular object will refer to the
1044 same memory location for the variable. */
1046 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
1047 BFD_ASSERT (s
!= NULL
);
1049 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
1050 copy the initial value out of the dynamic object and into the
1051 runtime process image. We need to remember the offset into the
1052 .rela.bss section we are going to use. */
1053 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1057 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
1058 BFD_ASSERT (srel
!= NULL
);
1059 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
1060 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
1063 /* We need to figure out the alignment required for this symbol. I
1064 have no idea how ELF linkers handle this. */
1065 power_of_two
= bfd_log2 (h
->size
);
1066 if (power_of_two
> 3)
1069 /* Apply the required alignment. */
1070 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
1071 (bfd_size_type
) (1 << power_of_two
));
1072 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
1074 if (!bfd_set_section_alignment (dynobj
, s
, power_of_two
))
1078 /* Define the symbol as being at this point in the section. */
1079 h
->root
.u
.def
.section
= s
;
1080 h
->root
.u
.def
.value
= s
->_raw_size
;
1082 /* Increment the section size to make room for the symbol. */
1083 s
->_raw_size
+= h
->size
;
1088 /* Set the sizes of the dynamic sections. */
1091 elf_m68k_size_dynamic_sections (output_bfd
, info
)
1092 bfd
*output_bfd ATTRIBUTE_UNUSED
;
1093 struct bfd_link_info
*info
;
1100 dynobj
= elf_hash_table (info
)->dynobj
;
1101 BFD_ASSERT (dynobj
!= NULL
);
1103 if (elf_hash_table (info
)->dynamic_sections_created
)
1105 /* Set the contents of the .interp section to the interpreter. */
1108 s
= bfd_get_section_by_name (dynobj
, ".interp");
1109 BFD_ASSERT (s
!= NULL
);
1110 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1111 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1116 /* We may have created entries in the .rela.got section.
1117 However, if we are not creating the dynamic sections, we will
1118 not actually use these entries. Reset the size of .rela.got,
1119 which will cause it to get stripped from the output file
1121 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
1126 /* If this is a -Bsymbolic shared link, then we need to discard all PC
1127 relative relocs against symbols defined in a regular object. We
1128 allocated space for them in the check_relocs routine, but we will not
1129 fill them in in the relocate_section routine. */
1130 if (info
->shared
&& info
->symbolic
)
1131 elf_m68k_link_hash_traverse (elf_m68k_hash_table (info
),
1132 elf_m68k_discard_copies
,
1135 /* The check_relocs and adjust_dynamic_symbol entry points have
1136 determined the sizes of the various dynamic sections. Allocate
1140 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1145 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1148 /* It's OK to base decisions on the section name, because none
1149 of the dynobj section names depend upon the input files. */
1150 name
= bfd_get_section_name (dynobj
, s
);
1154 if (strcmp (name
, ".plt") == 0)
1156 if (s
->_raw_size
== 0)
1158 /* Strip this section if we don't need it; see the
1164 /* Remember whether there is a PLT. */
1168 else if (strncmp (name
, ".rela", 5) == 0)
1170 if (s
->_raw_size
== 0)
1172 /* If we don't need this section, strip it from the
1173 output file. This is mostly to handle .rela.bss and
1174 .rela.plt. We must create both sections in
1175 create_dynamic_sections, because they must be created
1176 before the linker maps input sections to output
1177 sections. The linker does that before
1178 adjust_dynamic_symbol is called, and it is that
1179 function which decides whether anything needs to go
1180 into these sections. */
1187 /* We use the reloc_count field as a counter if we need
1188 to copy relocs into the output file. */
1192 else if (strncmp (name
, ".got", 4) != 0)
1194 /* It's not one of our sections, so don't allocate space. */
1200 _bfd_strip_section_from_output (info
, s
);
1204 /* Allocate memory for the section contents. */
1205 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
1206 Unused entries should be reclaimed before the section's contents
1207 are written out, but at the moment this does not happen. Thus in
1208 order to prevent writing out garbage, we initialise the section's
1209 contents to zero. */
1210 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->_raw_size
);
1211 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1215 if (elf_hash_table (info
)->dynamic_sections_created
)
1217 /* Add some entries to the .dynamic section. We fill in the
1218 values later, in elf_m68k_finish_dynamic_sections, but we
1219 must add the entries now so that we get the correct size for
1220 the .dynamic section. The DT_DEBUG entry is filled in by the
1221 dynamic linker and used by the debugger. */
1222 #define add_dynamic_entry(TAG, VAL) \
1223 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1227 if (!add_dynamic_entry (DT_DEBUG
, 0))
1233 if (!add_dynamic_entry (DT_PLTGOT
, 0)
1234 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
1235 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
1236 || !add_dynamic_entry (DT_JMPREL
, 0))
1242 if (!add_dynamic_entry (DT_RELA
, 0)
1243 || !add_dynamic_entry (DT_RELASZ
, 0)
1244 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
1248 if ((info
->flags
& DF_TEXTREL
) != 0)
1250 if (!add_dynamic_entry (DT_TEXTREL
, 0))
1254 #undef add_dynamic_entry
1259 /* This function is called via elf_m68k_link_hash_traverse if we are
1260 creating a shared object with -Bsymbolic. It discards the space
1261 allocated to copy PC relative relocs against symbols which are defined
1262 in regular objects. We allocated space for them in the check_relocs
1263 routine, but we won't fill them in in the relocate_section routine. */
1266 elf_m68k_discard_copies (h
, ignore
)
1267 struct elf_m68k_link_hash_entry
*h
;
1268 PTR ignore ATTRIBUTE_UNUSED
;
1270 struct elf_m68k_pcrel_relocs_copied
*s
;
1272 if (h
->root
.root
.type
== bfd_link_hash_warning
)
1273 h
= (struct elf_m68k_link_hash_entry
*) h
->root
.root
.u
.i
.link
;
1275 /* We only discard relocs for symbols defined in a regular object. */
1276 if ((h
->root
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1279 for (s
= h
->pcrel_relocs_copied
; s
!= NULL
; s
= s
->next
)
1280 s
->section
->_raw_size
-= s
->count
* sizeof (Elf32_External_Rela
);
1285 /* Relocate an M68K ELF section. */
1288 elf_m68k_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
1289 contents
, relocs
, local_syms
, local_sections
)
1291 struct bfd_link_info
*info
;
1293 asection
*input_section
;
1295 Elf_Internal_Rela
*relocs
;
1296 Elf_Internal_Sym
*local_syms
;
1297 asection
**local_sections
;
1300 Elf_Internal_Shdr
*symtab_hdr
;
1301 struct elf_link_hash_entry
**sym_hashes
;
1302 bfd_vma
*local_got_offsets
;
1306 Elf_Internal_Rela
*rel
;
1307 Elf_Internal_Rela
*relend
;
1309 if (info
->relocateable
)
1312 dynobj
= elf_hash_table (info
)->dynobj
;
1313 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1314 sym_hashes
= elf_sym_hashes (input_bfd
);
1315 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1322 relend
= relocs
+ input_section
->reloc_count
;
1323 for (; rel
< relend
; rel
++)
1326 reloc_howto_type
*howto
;
1327 unsigned long r_symndx
;
1328 struct elf_link_hash_entry
*h
;
1329 Elf_Internal_Sym
*sym
;
1332 bfd_reloc_status_type r
;
1334 r_type
= ELF32_R_TYPE (rel
->r_info
);
1335 if (r_type
< 0 || r_type
>= (int) R_68K_max
)
1337 bfd_set_error (bfd_error_bad_value
);
1340 howto
= howto_table
+ r_type
;
1342 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1347 if (r_symndx
< symtab_hdr
->sh_info
)
1349 sym
= local_syms
+ r_symndx
;
1350 sec
= local_sections
[r_symndx
];
1351 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, sec
, rel
);
1355 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1356 while (h
->root
.type
== bfd_link_hash_indirect
1357 || h
->root
.type
== bfd_link_hash_warning
)
1358 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1359 if (h
->root
.type
== bfd_link_hash_defined
1360 || h
->root
.type
== bfd_link_hash_defweak
)
1362 sec
= h
->root
.u
.def
.section
;
1363 if (((r_type
== R_68K_PLT8
1364 || r_type
== R_68K_PLT16
1365 || r_type
== R_68K_PLT32
1366 || r_type
== R_68K_PLT8O
1367 || r_type
== R_68K_PLT16O
1368 || r_type
== R_68K_PLT32O
)
1369 && h
->plt
.offset
!= (bfd_vma
) -1
1370 && elf_hash_table (info
)->dynamic_sections_created
)
1371 || ((r_type
== R_68K_GOT8O
1372 || r_type
== R_68K_GOT16O
1373 || r_type
== R_68K_GOT32O
1374 || ((r_type
== R_68K_GOT8
1375 || r_type
== R_68K_GOT16
1376 || r_type
== R_68K_GOT32
)
1377 && strcmp (h
->root
.root
.string
,
1378 "_GLOBAL_OFFSET_TABLE_") != 0))
1379 && elf_hash_table (info
)->dynamic_sections_created
1381 || (! info
->symbolic
&& h
->dynindx
!= -1)
1382 || (h
->elf_link_hash_flags
1383 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
1385 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1386 || (h
->elf_link_hash_flags
1387 & ELF_LINK_HASH_DEF_REGULAR
) == 0)
1388 && ((input_section
->flags
& SEC_ALLOC
) != 0
1389 /* DWARF will emit R_68K_32 relocations in its
1390 sections against symbols defined externally
1391 in shared libraries. We can't do anything
1393 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
1394 && (h
->elf_link_hash_flags
1395 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0))
1396 && (r_type
== R_68K_8
1397 || r_type
== R_68K_16
1398 || r_type
== R_68K_32
1399 || r_type
== R_68K_PC8
1400 || r_type
== R_68K_PC16
1401 || r_type
== R_68K_PC32
)))
1403 /* In these cases, we don't need the relocation
1404 value. We check specially because in some
1405 obscure cases sec->output_section will be NULL. */
1409 relocation
= (h
->root
.u
.def
.value
1410 + sec
->output_section
->vma
1411 + sec
->output_offset
);
1413 else if (h
->root
.type
== bfd_link_hash_undefweak
)
1415 else if (info
->shared
1416 && (!info
->symbolic
|| info
->allow_shlib_undefined
)
1417 && !info
->no_undefined
1418 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
1422 if (!(info
->callbacks
->undefined_symbol
1423 (info
, h
->root
.root
.string
, input_bfd
,
1424 input_section
, rel
->r_offset
,
1425 (!info
->shared
|| info
->no_undefined
1426 || ELF_ST_VISIBILITY (h
->other
)))))
1437 /* Relocation is to the address of the entry for this symbol
1438 in the global offset table. */
1440 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
1446 /* Relocation is the offset of the entry for this symbol in
1447 the global offset table. */
1454 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1455 BFD_ASSERT (sgot
!= NULL
);
1460 off
= h
->got
.offset
;
1461 BFD_ASSERT (off
!= (bfd_vma
) -1);
1463 if (!elf_hash_table (info
)->dynamic_sections_created
1465 && (info
->symbolic
|| h
->dynindx
== -1)
1466 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
1468 /* This is actually a static link, or it is a
1469 -Bsymbolic link and the symbol is defined
1470 locally, or the symbol was forced to be local
1471 because of a version file.. We must initialize
1472 this entry in the global offset table. Since
1473 the offset must always be a multiple of 4, we
1474 use the least significant bit to record whether
1475 we have initialized it already.
1477 When doing a dynamic link, we create a .rela.got
1478 relocation entry to initialize the value. This
1479 is done in the finish_dynamic_symbol routine. */
1484 bfd_put_32 (output_bfd
, relocation
,
1485 sgot
->contents
+ off
);
1492 BFD_ASSERT (local_got_offsets
!= NULL
1493 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
1495 off
= local_got_offsets
[r_symndx
];
1497 /* The offset must always be a multiple of 4. We use
1498 the least significant bit to record whether we have
1499 already generated the necessary reloc. */
1504 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1509 Elf_Internal_Rela outrel
;
1511 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1512 BFD_ASSERT (srelgot
!= NULL
);
1514 outrel
.r_offset
= (sgot
->output_section
->vma
1515 + sgot
->output_offset
1517 outrel
.r_info
= ELF32_R_INFO (0, R_68K_RELATIVE
);
1518 outrel
.r_addend
= relocation
;
1519 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1520 (((Elf32_External_Rela
*)
1522 + srelgot
->reloc_count
));
1523 ++srelgot
->reloc_count
;
1526 local_got_offsets
[r_symndx
] |= 1;
1530 relocation
= sgot
->output_offset
+ off
;
1531 if (r_type
== R_68K_GOT8O
1532 || r_type
== R_68K_GOT16O
1533 || r_type
== R_68K_GOT32O
)
1535 /* This relocation does not use the addend. */
1539 relocation
+= sgot
->output_section
->vma
;
1546 /* Relocation is to the entry for this symbol in the
1547 procedure linkage table. */
1549 /* Resolve a PLTxx reloc against a local symbol directly,
1550 without using the procedure linkage table. */
1554 if (h
->plt
.offset
== (bfd_vma
) -1
1555 || !elf_hash_table (info
)->dynamic_sections_created
)
1557 /* We didn't make a PLT entry for this symbol. This
1558 happens when statically linking PIC code, or when
1559 using -Bsymbolic. */
1565 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1566 BFD_ASSERT (splt
!= NULL
);
1569 relocation
= (splt
->output_section
->vma
1570 + splt
->output_offset
1577 /* Relocation is the offset of the entry for this symbol in
1578 the procedure linkage table. */
1579 BFD_ASSERT (h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1);
1583 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1584 BFD_ASSERT (splt
!= NULL
);
1587 relocation
= h
->plt
.offset
;
1589 /* This relocation does not use the addend. */
1605 && (input_section
->flags
& SEC_ALLOC
) != 0
1606 && ((r_type
!= R_68K_PC8
1607 && r_type
!= R_68K_PC16
1608 && r_type
!= R_68K_PC32
)
1610 || (h
->elf_link_hash_flags
1611 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
1613 Elf_Internal_Rela outrel
;
1614 boolean skip
, relocate
;
1616 /* When generating a shared object, these relocations
1617 are copied into the output file to be resolved at run
1624 name
= (bfd_elf_string_from_elf_section
1626 elf_elfheader (input_bfd
)->e_shstrndx
,
1627 elf_section_data (input_section
)->rel_hdr
.sh_name
));
1631 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
1632 && strcmp (bfd_get_section_name (input_bfd
,
1636 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1637 BFD_ASSERT (sreloc
!= NULL
);
1644 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
1646 if (outrel
.r_offset
== (bfd_vma
) -1)
1648 else if (outrel
.r_offset
== (bfd_vma
) -2)
1649 skip
= true, relocate
= true;
1650 outrel
.r_offset
+= (input_section
->output_section
->vma
1651 + input_section
->output_offset
);
1654 memset (&outrel
, 0, sizeof outrel
);
1655 /* h->dynindx may be -1 if the symbol was marked to
1658 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1659 || (h
->elf_link_hash_flags
1660 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
1662 BFD_ASSERT (h
->dynindx
!= -1);
1663 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1664 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1668 if (r_type
== R_68K_32
)
1671 outrel
.r_info
= ELF32_R_INFO (0, R_68K_RELATIVE
);
1672 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1679 sec
= local_sections
[r_symndx
];
1682 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
1684 == bfd_link_hash_defweak
));
1685 sec
= h
->root
.u
.def
.section
;
1687 if (sec
!= NULL
&& bfd_is_abs_section (sec
))
1689 else if (sec
== NULL
|| sec
->owner
== NULL
)
1691 bfd_set_error (bfd_error_bad_value
);
1698 osec
= sec
->output_section
;
1699 indx
= elf_section_data (osec
)->dynindx
;
1700 BFD_ASSERT (indx
> 0);
1703 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
1704 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1708 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1709 (((Elf32_External_Rela
*)
1711 + sreloc
->reloc_count
));
1712 ++sreloc
->reloc_count
;
1714 /* This reloc will be computed at runtime, so there's no
1715 need to do anything now, except for R_68K_32
1716 relocations that have been turned into
1724 case R_68K_GNU_VTINHERIT
:
1725 case R_68K_GNU_VTENTRY
:
1726 /* These are no-ops in the end. */
1733 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1734 contents
, rel
->r_offset
,
1735 relocation
, rel
->r_addend
);
1737 if (r
!= bfd_reloc_ok
)
1742 case bfd_reloc_outofrange
:
1744 case bfd_reloc_overflow
:
1749 name
= h
->root
.root
.string
;
1752 name
= bfd_elf_string_from_elf_section (input_bfd
,
1753 symtab_hdr
->sh_link
,
1758 name
= bfd_section_name (input_bfd
, sec
);
1760 if (!(info
->callbacks
->reloc_overflow
1761 (info
, name
, howto
->name
, (bfd_vma
) 0,
1762 input_bfd
, input_section
, rel
->r_offset
)))
1773 /* Finish up dynamic symbol handling. We set the contents of various
1774 dynamic sections here. */
1777 elf_m68k_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1779 struct bfd_link_info
*info
;
1780 struct elf_link_hash_entry
*h
;
1781 Elf_Internal_Sym
*sym
;
1784 int plt_off1
, plt_off2
, plt_off3
;
1786 dynobj
= elf_hash_table (info
)->dynobj
;
1788 if (h
->plt
.offset
!= (bfd_vma
) -1)
1795 Elf_Internal_Rela rela
;
1797 /* This symbol has an entry in the procedure linkage table. Set
1800 BFD_ASSERT (h
->dynindx
!= -1);
1802 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1803 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
1804 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1805 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
1807 /* Get the index in the procedure linkage table which
1808 corresponds to this symbol. This is the index of this symbol
1809 in all the symbols for which we are making plt entries. The
1810 first entry in the procedure linkage table is reserved. */
1811 if ( CPU32_FLAG (output_bfd
))
1812 plt_index
= h
->plt
.offset
/ PLT_CPU32_ENTRY_SIZE
- 1;
1814 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1816 /* Get the offset into the .got table of the entry that
1817 corresponds to this function. Each .got entry is 4 bytes.
1818 The first three are reserved. */
1819 got_offset
= (plt_index
+ 3) * 4;
1821 if ( CPU32_FLAG (output_bfd
))
1823 /* Fill in the entry in the procedure linkage table. */
1824 memcpy (splt
->contents
+ h
->plt
.offset
, elf_cpu32_plt_entry
,
1825 PLT_CPU32_ENTRY_SIZE
);
1832 /* Fill in the entry in the procedure linkage table. */
1833 memcpy (splt
->contents
+ h
->plt
.offset
, elf_m68k_plt_entry
,
1840 /* The offset is relative to the first extension word. */
1841 bfd_put_32 (output_bfd
,
1842 (sgot
->output_section
->vma
1843 + sgot
->output_offset
1845 - (splt
->output_section
->vma
1846 + h
->plt
.offset
+ 2)),
1847 splt
->contents
+ h
->plt
.offset
+ plt_off1
);
1849 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
1850 splt
->contents
+ h
->plt
.offset
+ plt_off2
);
1851 bfd_put_32 (output_bfd
, - (h
->plt
.offset
+ plt_off3
),
1852 splt
->contents
+ h
->plt
.offset
+ plt_off3
);
1854 /* Fill in the entry in the global offset table. */
1855 bfd_put_32 (output_bfd
,
1856 (splt
->output_section
->vma
1857 + splt
->output_offset
1860 sgot
->contents
+ got_offset
);
1862 /* Fill in the entry in the .rela.plt section. */
1863 rela
.r_offset
= (sgot
->output_section
->vma
1864 + sgot
->output_offset
1866 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_JMP_SLOT
);
1868 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1869 ((Elf32_External_Rela
*) srela
->contents
1872 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1874 /* Mark the symbol as undefined, rather than as defined in
1875 the .plt section. Leave the value alone. */
1876 sym
->st_shndx
= SHN_UNDEF
;
1880 if (h
->got
.offset
!= (bfd_vma
) -1)
1884 Elf_Internal_Rela rela
;
1886 /* This symbol has an entry in the global offset table. Set it
1889 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1890 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
1891 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1893 rela
.r_offset
= (sgot
->output_section
->vma
1894 + sgot
->output_offset
1895 + (h
->got
.offset
&~ (bfd_vma
) 1));
1897 /* If this is a -Bsymbolic link, and the symbol is defined
1898 locally, we just want to emit a RELATIVE reloc. Likewise if
1899 the symbol was forced to be local because of a version file.
1900 The entry in the global offset table will already have been
1901 initialized in the relocate_section function. */
1903 && (info
->symbolic
|| h
->dynindx
== -1)
1904 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
))
1906 rela
.r_info
= ELF32_R_INFO (0, R_68K_RELATIVE
);
1907 rela
.r_addend
= bfd_get_signed_32 (output_bfd
,
1909 + (h
->got
.offset
&~ (bfd_vma
) 1)));
1913 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1914 sgot
->contents
+ (h
->got
.offset
&~ (bfd_vma
) 1));
1915 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_GLOB_DAT
);
1919 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1920 ((Elf32_External_Rela
*) srela
->contents
1921 + srela
->reloc_count
));
1922 ++srela
->reloc_count
;
1925 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
1928 Elf_Internal_Rela rela
;
1930 /* This symbol needs a copy reloc. Set it up. */
1932 BFD_ASSERT (h
->dynindx
!= -1
1933 && (h
->root
.type
== bfd_link_hash_defined
1934 || h
->root
.type
== bfd_link_hash_defweak
));
1936 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
1938 BFD_ASSERT (s
!= NULL
);
1940 rela
.r_offset
= (h
->root
.u
.def
.value
1941 + h
->root
.u
.def
.section
->output_section
->vma
1942 + h
->root
.u
.def
.section
->output_offset
);
1943 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_COPY
);
1945 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1946 ((Elf32_External_Rela
*) s
->contents
1951 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1952 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1953 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
1954 sym
->st_shndx
= SHN_ABS
;
1959 /* Finish up the dynamic sections. */
1962 elf_m68k_finish_dynamic_sections (output_bfd
, info
)
1964 struct bfd_link_info
*info
;
1970 dynobj
= elf_hash_table (info
)->dynobj
;
1972 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
1973 BFD_ASSERT (sgot
!= NULL
);
1974 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
1976 if (elf_hash_table (info
)->dynamic_sections_created
)
1979 Elf32_External_Dyn
*dyncon
, *dynconend
;
1981 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1982 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
1984 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1985 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
1986 for (; dyncon
< dynconend
; dyncon
++)
1988 Elf_Internal_Dyn dyn
;
1992 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2005 s
= bfd_get_section_by_name (output_bfd
, name
);
2006 BFD_ASSERT (s
!= NULL
);
2007 dyn
.d_un
.d_ptr
= s
->vma
;
2008 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2012 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
2013 BFD_ASSERT (s
!= NULL
);
2014 if (s
->_cooked_size
!= 0)
2015 dyn
.d_un
.d_val
= s
->_cooked_size
;
2017 dyn
.d_un
.d_val
= s
->_raw_size
;
2018 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2022 /* The procedure linkage table relocs (DT_JMPREL) should
2023 not be included in the overall relocs (DT_RELA).
2024 Therefore, we override the DT_RELASZ entry here to
2025 make it not include the JMPREL relocs. Since the
2026 linker script arranges for .rela.plt to follow all
2027 other relocation sections, we don't have to worry
2028 about changing the DT_RELA entry. */
2029 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
2032 if (s
->_cooked_size
!= 0)
2033 dyn
.d_un
.d_val
-= s
->_cooked_size
;
2035 dyn
.d_un
.d_val
-= s
->_raw_size
;
2037 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2042 /* Fill in the first entry in the procedure linkage table. */
2043 if (splt
->_raw_size
> 0)
2045 if (!CPU32_FLAG (output_bfd
))
2047 memcpy (splt
->contents
, elf_m68k_plt0_entry
, PLT_ENTRY_SIZE
);
2048 bfd_put_32 (output_bfd
,
2049 (sgot
->output_section
->vma
2050 + sgot
->output_offset
+ 4
2051 - (splt
->output_section
->vma
+ 2)),
2052 splt
->contents
+ 4);
2053 bfd_put_32 (output_bfd
,
2054 (sgot
->output_section
->vma
2055 + sgot
->output_offset
+ 8
2056 - (splt
->output_section
->vma
+ 10)),
2057 splt
->contents
+ 12);
2058 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
2063 memcpy (splt
->contents
, elf_cpu32_plt0_entry
, PLT_CPU32_ENTRY_SIZE
);
2064 bfd_put_32 (output_bfd
,
2065 (sgot
->output_section
->vma
2066 + sgot
->output_offset
+ 4
2067 - (splt
->output_section
->vma
+ 2)),
2068 splt
->contents
+ 4);
2069 bfd_put_32 (output_bfd
,
2070 (sgot
->output_section
->vma
2071 + sgot
->output_offset
+ 8
2072 - (splt
->output_section
->vma
+ 10)),
2073 splt
->contents
+ 12);
2074 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
2075 = PLT_CPU32_ENTRY_SIZE
;
2080 /* Fill in the first three entries in the global offset table. */
2081 if (sgot
->_raw_size
> 0)
2084 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
2086 bfd_put_32 (output_bfd
,
2087 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
2089 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
2090 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
2093 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
2098 /* Given a .data section and a .emreloc in-memory section, store
2099 relocation information into the .emreloc section which can be
2100 used at runtime to relocate the section. This is called by the
2101 linker when the --embedded-relocs switch is used. This is called
2102 after the add_symbols entry point has been called for all the
2103 objects, and before the final_link entry point is called. */
2106 bfd_m68k_elf32_create_embedded_relocs (abfd
, info
, datasec
, relsec
, errmsg
)
2108 struct bfd_link_info
*info
;
2113 Elf_Internal_Shdr
*symtab_hdr
;
2114 Elf_Internal_Shdr
*shndx_hdr
;
2115 Elf32_External_Sym
*extsyms
;
2116 Elf32_External_Sym
*free_extsyms
= NULL
;
2117 Elf_External_Sym_Shndx
*shndx_buf
= NULL
;
2118 Elf_Internal_Rela
*internal_relocs
;
2119 Elf_Internal_Rela
*free_relocs
= NULL
;
2120 Elf_Internal_Rela
*irel
, *irelend
;
2124 BFD_ASSERT (! info
->relocateable
);
2128 if (datasec
->reloc_count
== 0)
2131 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2132 /* Read this BFD's symbols if we haven't done so already, or get the cached
2133 copy if it exists. */
2134 if (symtab_hdr
->contents
!= NULL
)
2135 extsyms
= (Elf32_External_Sym
*) symtab_hdr
->contents
;
2138 /* Go get them off disk. */
2139 amt
= symtab_hdr
->sh_info
* sizeof (Elf32_External_Sym
);
2140 if (info
->keep_memory
)
2141 extsyms
= (Elf32_External_Sym
*) bfd_alloc (abfd
, amt
);
2143 extsyms
= (Elf32_External_Sym
*) bfd_malloc (amt
);
2144 if (extsyms
== NULL
)
2146 if (! info
->keep_memory
)
2147 free_extsyms
= extsyms
;
2148 if (bfd_seek (abfd
, symtab_hdr
->sh_offset
, SEEK_SET
) != 0
2149 || bfd_bread (extsyms
, amt
, abfd
) != amt
)
2151 if (info
->keep_memory
)
2152 symtab_hdr
->contents
= (unsigned char *) extsyms
;
2155 shndx_hdr
= &elf_tdata (abfd
)->symtab_shndx_hdr
;
2156 if (shndx_hdr
->sh_size
!= 0)
2158 amt
= symtab_hdr
->sh_info
* sizeof (Elf_External_Sym_Shndx
);
2159 shndx_buf
= (Elf_External_Sym_Shndx
*) bfd_malloc (amt
);
2160 if (shndx_buf
== NULL
)
2162 if (bfd_seek (abfd
, shndx_hdr
->sh_offset
, SEEK_SET
) != 0
2163 || bfd_bread ((PTR
) shndx_buf
, amt
, abfd
) != amt
)
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
)
2173 if (! info
->keep_memory
)
2174 free_relocs
= internal_relocs
;
2176 amt
= (bfd_size_type
) datasec
->reloc_count
* 12;
2177 relsec
->contents
= (bfd_byte
*) bfd_alloc (abfd
, amt
);
2178 if (relsec
->contents
== NULL
)
2181 p
= relsec
->contents
;
2183 irelend
= internal_relocs
+ datasec
->reloc_count
;
2184 for (irel
= internal_relocs
; irel
< irelend
; irel
++, p
+= 12)
2186 asection
*targetsec
;
2188 /* We are going to write a four byte longword into the runtime
2189 reloc section. The longword will be the address in the data
2190 section which must be relocated. It is followed by the name
2191 of the target section NUL-padded or truncated to 8
2194 /* We can only relocate absolute longword relocs at run time. */
2195 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_68K_32
)
2197 *errmsg
= _("unsupported reloc type");
2198 bfd_set_error (bfd_error_bad_value
);
2202 /* Get the target section referred to by the reloc. */
2203 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
2205 Elf32_External_Sym
*esym
;
2206 Elf_External_Sym_Shndx
*shndx
;
2207 Elf_Internal_Sym isym
;
2209 /* A local symbol. */
2210 esym
= extsyms
+ ELF32_R_SYM (irel
->r_info
);
2211 shndx
= shndx_buf
+ (shndx_buf
? ELF32_R_SYM (irel
->r_info
) : 0);
2212 bfd_elf32_swap_symbol_in (abfd
, (const PTR
) esym
, (const PTR
) shndx
,
2215 targetsec
= bfd_section_from_elf_index (abfd
, isym
.st_shndx
);
2220 struct elf_link_hash_entry
*h
;
2222 /* An external symbol. */
2223 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
2224 h
= elf_sym_hashes (abfd
)[indx
];
2225 BFD_ASSERT (h
!= NULL
);
2226 if (h
->root
.type
== bfd_link_hash_defined
2227 || h
->root
.type
== bfd_link_hash_defweak
)
2228 targetsec
= h
->root
.u
.def
.section
;
2233 bfd_put_32 (abfd
, irel
->r_offset
+ datasec
->output_offset
, p
);
2234 memset (p
+ 4, 0, 8);
2235 if (targetsec
!= NULL
)
2236 strncpy (p
+ 4, targetsec
->output_section
->name
, 8);
2239 if (shndx_buf
!= NULL
)
2241 if (free_extsyms
!= NULL
)
2242 free (free_extsyms
);
2243 if (free_relocs
!= NULL
)
2248 if (shndx_buf
!= NULL
)
2250 if (free_extsyms
!= NULL
)
2251 free (free_extsyms
);
2252 if (free_relocs
!= NULL
)
2257 static enum elf_reloc_type_class
2258 elf32_m68k_reloc_type_class (rela
)
2259 const Elf_Internal_Rela
*rela
;
2261 switch ((int) ELF32_R_TYPE (rela
->r_info
))
2263 case R_68K_RELATIVE
:
2264 return reloc_class_relative
;
2265 case R_68K_JMP_SLOT
:
2266 return reloc_class_plt
;
2268 return reloc_class_copy
;
2270 return reloc_class_normal
;
2274 #define TARGET_BIG_SYM bfd_elf32_m68k_vec
2275 #define TARGET_BIG_NAME "elf32-m68k"
2276 #define ELF_MACHINE_CODE EM_68K
2277 #define ELF_MAXPAGESIZE 0x2000
2278 #define elf_backend_create_dynamic_sections \
2279 _bfd_elf_create_dynamic_sections
2280 #define bfd_elf32_bfd_link_hash_table_create \
2281 elf_m68k_link_hash_table_create
2282 #define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link
2284 #define elf_backend_check_relocs elf_m68k_check_relocs
2285 #define elf_backend_adjust_dynamic_symbol \
2286 elf_m68k_adjust_dynamic_symbol
2287 #define elf_backend_size_dynamic_sections \
2288 elf_m68k_size_dynamic_sections
2289 #define elf_backend_relocate_section elf_m68k_relocate_section
2290 #define elf_backend_finish_dynamic_symbol \
2291 elf_m68k_finish_dynamic_symbol
2292 #define elf_backend_finish_dynamic_sections \
2293 elf_m68k_finish_dynamic_sections
2294 #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook
2295 #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook
2296 #define bfd_elf32_bfd_merge_private_bfd_data \
2297 elf32_m68k_merge_private_bfd_data
2298 #define bfd_elf32_bfd_set_private_flags \
2299 elf32_m68k_set_private_flags
2300 #define bfd_elf32_bfd_print_private_bfd_data \
2301 elf32_m68k_print_private_bfd_data
2302 #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class
2304 #define elf_backend_can_gc_sections 1
2305 #define elf_backend_can_refcount 1
2306 #define elf_backend_want_got_plt 1
2307 #define elf_backend_plt_readonly 1
2308 #define elf_backend_want_plt_sym 0
2309 #define elf_backend_got_header_size 12
2310 #define elf_backend_rela_normal 1
2312 #include "elf32-target.h"