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 ((bfd
*, 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_alloc (abfd
, 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
))
350 bfd_release (abfd
, ret
);
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 (abfd
, 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
;
789 return bfd_section_from_elf_index (abfd
, sym
->st_shndx
);
795 /* Update the got entry reference counts for the section being removed. */
798 elf_m68k_gc_sweep_hook (abfd
, info
, sec
, relocs
)
800 struct bfd_link_info
*info
;
802 const Elf_Internal_Rela
*relocs
;
804 Elf_Internal_Shdr
*symtab_hdr
;
805 struct elf_link_hash_entry
**sym_hashes
;
806 bfd_signed_vma
*local_got_refcounts
;
807 const Elf_Internal_Rela
*rel
, *relend
;
808 unsigned long r_symndx
;
809 struct elf_link_hash_entry
*h
;
814 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
815 sym_hashes
= elf_sym_hashes (abfd
);
816 local_got_refcounts
= elf_local_got_refcounts (abfd
);
818 dynobj
= elf_hash_table (info
)->dynobj
;
822 sgot
= bfd_get_section_by_name (dynobj
, ".got");
823 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
825 relend
= relocs
+ sec
->reloc_count
;
826 for (rel
= relocs
; rel
< relend
; rel
++)
828 switch (ELF32_R_TYPE (rel
->r_info
))
836 r_symndx
= ELF32_R_SYM (rel
->r_info
);
837 if (r_symndx
>= symtab_hdr
->sh_info
)
839 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
840 if (h
->got
.refcount
> 0)
843 if (h
->got
.refcount
== 0)
845 /* We don't need the .got entry any more. */
846 sgot
->_raw_size
-= 4;
847 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
851 else if (local_got_refcounts
!= NULL
)
853 if (local_got_refcounts
[r_symndx
] > 0)
855 --local_got_refcounts
[r_symndx
];
856 if (local_got_refcounts
[r_symndx
] == 0)
858 /* We don't need the .got entry any more. */
859 sgot
->_raw_size
-= 4;
861 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
879 r_symndx
= ELF32_R_SYM (rel
->r_info
);
880 if (r_symndx
>= symtab_hdr
->sh_info
)
882 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
883 if (h
->plt
.refcount
> 0)
896 /* Adjust a symbol defined by a dynamic object and referenced by a
897 regular object. The current definition is in some section of the
898 dynamic object, but we're not including those sections. We have to
899 change the definition to something the rest of the link can
903 elf_m68k_adjust_dynamic_symbol (info
, h
)
904 struct bfd_link_info
*info
;
905 struct elf_link_hash_entry
*h
;
909 unsigned int power_of_two
;
911 dynobj
= elf_hash_table (info
)->dynobj
;
913 /* Make sure we know what is going on here. */
914 BFD_ASSERT (dynobj
!= NULL
915 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
916 || h
->weakdef
!= NULL
917 || ((h
->elf_link_hash_flags
918 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
919 && (h
->elf_link_hash_flags
920 & ELF_LINK_HASH_REF_REGULAR
) != 0
921 && (h
->elf_link_hash_flags
922 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
924 /* If this is a function, put it in the procedure linkage table. We
925 will fill in the contents of the procedure linkage table later,
926 when we know the address of the .got section. */
927 if (h
->type
== STT_FUNC
928 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
931 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) == 0
932 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) == 0
933 /* We must always create the plt entry if it was referenced
934 by a PLTxxO relocation. In this case we already recorded
935 it as a dynamic symbol. */
938 /* This case can occur if we saw a PLTxx reloc in an input
939 file, but the symbol was never referred to by a dynamic
940 object. In such a case, we don't actually need to build
941 a procedure linkage table, and we can just do a PCxx
943 BFD_ASSERT ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0);
944 h
->plt
.offset
= (bfd_vma
) -1;
948 /* GC may have rendered this entry unused. */
949 if (h
->plt
.refcount
<= 0)
951 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
952 h
->plt
.offset
= (bfd_vma
) -1;
956 /* Make sure this symbol is output as a dynamic symbol. */
957 if (h
->dynindx
== -1)
959 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
963 s
= bfd_get_section_by_name (dynobj
, ".plt");
964 BFD_ASSERT (s
!= NULL
);
966 /* If this is the first .plt entry, make room for the special
968 if (s
->_raw_size
== 0)
970 if (CPU32_FLAG (dynobj
))
971 s
->_raw_size
+= PLT_CPU32_ENTRY_SIZE
;
973 s
->_raw_size
+= PLT_ENTRY_SIZE
;
976 /* If this symbol is not defined in a regular file, and we are
977 not generating a shared library, then set the symbol to this
978 location in the .plt. This is required to make function
979 pointers compare as equal between the normal executable and
980 the shared library. */
982 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
984 h
->root
.u
.def
.section
= s
;
985 h
->root
.u
.def
.value
= s
->_raw_size
;
988 h
->plt
.offset
= s
->_raw_size
;
990 /* Make room for this entry. */
991 if (CPU32_FLAG (dynobj
))
992 s
->_raw_size
+= PLT_CPU32_ENTRY_SIZE
;
994 s
->_raw_size
+= PLT_ENTRY_SIZE
;
996 /* We also need to make an entry in the .got.plt section, which
997 will be placed in the .got section by the linker script. */
999 s
= bfd_get_section_by_name (dynobj
, ".got.plt");
1000 BFD_ASSERT (s
!= NULL
);
1003 /* We also need to make an entry in the .rela.plt section. */
1005 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1006 BFD_ASSERT (s
!= NULL
);
1007 s
->_raw_size
+= sizeof (Elf32_External_Rela
);
1012 /* Reinitialize the plt offset now that it is not used as a reference
1014 h
->plt
.offset
= (bfd_vma
) -1;
1016 /* If this is a weak symbol, and there is a real definition, the
1017 processor independent code will have arranged for us to see the
1018 real definition first, and we can just use the same value. */
1019 if (h
->weakdef
!= NULL
)
1021 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1022 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1023 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1024 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1028 /* This is a reference to a symbol defined by a dynamic object which
1029 is not a function. */
1031 /* If we are creating a shared library, we must presume that the
1032 only references to the symbol are via the global offset table.
1033 For such cases we need not do anything here; the relocations will
1034 be handled correctly by relocate_section. */
1038 /* We must allocate the symbol in our .dynbss section, which will
1039 become part of the .bss section of the executable. There will be
1040 an entry for this symbol in the .dynsym section. The dynamic
1041 object will contain position independent code, so all references
1042 from the dynamic object to this symbol will go through the global
1043 offset table. The dynamic linker will use the .dynsym entry to
1044 determine the address it must put in the global offset table, so
1045 both the dynamic object and the regular object will refer to the
1046 same memory location for the variable. */
1048 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
1049 BFD_ASSERT (s
!= NULL
);
1051 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
1052 copy the initial value out of the dynamic object and into the
1053 runtime process image. We need to remember the offset into the
1054 .rela.bss section we are going to use. */
1055 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1059 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
1060 BFD_ASSERT (srel
!= NULL
);
1061 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
1062 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
1065 /* We need to figure out the alignment required for this symbol. I
1066 have no idea how ELF linkers handle this. */
1067 power_of_two
= bfd_log2 (h
->size
);
1068 if (power_of_two
> 3)
1071 /* Apply the required alignment. */
1072 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
1073 (bfd_size_type
) (1 << power_of_two
));
1074 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
1076 if (!bfd_set_section_alignment (dynobj
, s
, power_of_two
))
1080 /* Define the symbol as being at this point in the section. */
1081 h
->root
.u
.def
.section
= s
;
1082 h
->root
.u
.def
.value
= s
->_raw_size
;
1084 /* Increment the section size to make room for the symbol. */
1085 s
->_raw_size
+= h
->size
;
1090 /* Set the sizes of the dynamic sections. */
1093 elf_m68k_size_dynamic_sections (output_bfd
, info
)
1094 bfd
*output_bfd ATTRIBUTE_UNUSED
;
1095 struct bfd_link_info
*info
;
1102 dynobj
= elf_hash_table (info
)->dynobj
;
1103 BFD_ASSERT (dynobj
!= NULL
);
1105 if (elf_hash_table (info
)->dynamic_sections_created
)
1107 /* Set the contents of the .interp section to the interpreter. */
1110 s
= bfd_get_section_by_name (dynobj
, ".interp");
1111 BFD_ASSERT (s
!= NULL
);
1112 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1113 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1118 /* We may have created entries in the .rela.got section.
1119 However, if we are not creating the dynamic sections, we will
1120 not actually use these entries. Reset the size of .rela.got,
1121 which will cause it to get stripped from the output file
1123 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
1128 /* If this is a -Bsymbolic shared link, then we need to discard all PC
1129 relative relocs against symbols defined in a regular object. We
1130 allocated space for them in the check_relocs routine, but we will not
1131 fill them in in the relocate_section routine. */
1132 if (info
->shared
&& info
->symbolic
)
1133 elf_m68k_link_hash_traverse (elf_m68k_hash_table (info
),
1134 elf_m68k_discard_copies
,
1137 /* The check_relocs and adjust_dynamic_symbol entry points have
1138 determined the sizes of the various dynamic sections. Allocate
1142 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1147 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1150 /* It's OK to base decisions on the section name, because none
1151 of the dynobj section names depend upon the input files. */
1152 name
= bfd_get_section_name (dynobj
, s
);
1156 if (strcmp (name
, ".plt") == 0)
1158 if (s
->_raw_size
== 0)
1160 /* Strip this section if we don't need it; see the
1166 /* Remember whether there is a PLT. */
1170 else if (strncmp (name
, ".rela", 5) == 0)
1172 if (s
->_raw_size
== 0)
1174 /* If we don't need this section, strip it from the
1175 output file. This is mostly to handle .rela.bss and
1176 .rela.plt. We must create both sections in
1177 create_dynamic_sections, because they must be created
1178 before the linker maps input sections to output
1179 sections. The linker does that before
1180 adjust_dynamic_symbol is called, and it is that
1181 function which decides whether anything needs to go
1182 into these sections. */
1189 /* We use the reloc_count field as a counter if we need
1190 to copy relocs into the output file. */
1194 else if (strncmp (name
, ".got", 4) != 0)
1196 /* It's not one of our sections, so don't allocate space. */
1202 _bfd_strip_section_from_output (info
, s
);
1206 /* Allocate memory for the section contents. */
1207 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
1208 Unused entries should be reclaimed before the section's contents
1209 are written out, but at the moment this does not happen. Thus in
1210 order to prevent writing out garbage, we initialise the section's
1211 contents to zero. */
1212 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->_raw_size
);
1213 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1217 if (elf_hash_table (info
)->dynamic_sections_created
)
1219 /* Add some entries to the .dynamic section. We fill in the
1220 values later, in elf_m68k_finish_dynamic_sections, but we
1221 must add the entries now so that we get the correct size for
1222 the .dynamic section. The DT_DEBUG entry is filled in by the
1223 dynamic linker and used by the debugger. */
1224 #define add_dynamic_entry(TAG, VAL) \
1225 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1229 if (!add_dynamic_entry (DT_DEBUG
, 0))
1235 if (!add_dynamic_entry (DT_PLTGOT
, 0)
1236 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
1237 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
1238 || !add_dynamic_entry (DT_JMPREL
, 0))
1244 if (!add_dynamic_entry (DT_RELA
, 0)
1245 || !add_dynamic_entry (DT_RELASZ
, 0)
1246 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
1250 if ((info
->flags
& DF_TEXTREL
) != 0)
1252 if (!add_dynamic_entry (DT_TEXTREL
, 0))
1256 #undef add_dynamic_entry
1261 /* This function is called via elf_m68k_link_hash_traverse if we are
1262 creating a shared object with -Bsymbolic. It discards the space
1263 allocated to copy PC relative relocs against symbols which are defined
1264 in regular objects. We allocated space for them in the check_relocs
1265 routine, but we won't fill them in in the relocate_section routine. */
1268 elf_m68k_discard_copies (h
, ignore
)
1269 struct elf_m68k_link_hash_entry
*h
;
1270 PTR ignore ATTRIBUTE_UNUSED
;
1272 struct elf_m68k_pcrel_relocs_copied
*s
;
1274 if (h
->root
.root
.type
== bfd_link_hash_warning
)
1275 h
= (struct elf_m68k_link_hash_entry
*) h
->root
.root
.u
.i
.link
;
1277 /* We only discard relocs for symbols defined in a regular object. */
1278 if ((h
->root
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1281 for (s
= h
->pcrel_relocs_copied
; s
!= NULL
; s
= s
->next
)
1282 s
->section
->_raw_size
-= s
->count
* sizeof (Elf32_External_Rela
);
1287 /* Relocate an M68K ELF section. */
1290 elf_m68k_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
1291 contents
, relocs
, local_syms
, local_sections
)
1293 struct bfd_link_info
*info
;
1295 asection
*input_section
;
1297 Elf_Internal_Rela
*relocs
;
1298 Elf_Internal_Sym
*local_syms
;
1299 asection
**local_sections
;
1302 Elf_Internal_Shdr
*symtab_hdr
;
1303 struct elf_link_hash_entry
**sym_hashes
;
1304 bfd_vma
*local_got_offsets
;
1308 Elf_Internal_Rela
*rel
;
1309 Elf_Internal_Rela
*relend
;
1311 dynobj
= elf_hash_table (info
)->dynobj
;
1312 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1313 sym_hashes
= elf_sym_hashes (input_bfd
);
1314 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1321 relend
= relocs
+ input_section
->reloc_count
;
1322 for (; rel
< relend
; rel
++)
1325 reloc_howto_type
*howto
;
1326 unsigned long r_symndx
;
1327 struct elf_link_hash_entry
*h
;
1328 Elf_Internal_Sym
*sym
;
1331 bfd_reloc_status_type r
;
1333 r_type
= ELF32_R_TYPE (rel
->r_info
);
1334 if (r_type
< 0 || r_type
>= (int) R_68K_max
)
1336 bfd_set_error (bfd_error_bad_value
);
1339 howto
= howto_table
+ r_type
;
1341 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1343 if (info
->relocateable
)
1345 /* This is a relocateable link. We don't have to change
1346 anything, unless the reloc is against a section symbol,
1347 in which case we have to adjust according to where the
1348 section symbol winds up in the output section. */
1349 if (r_symndx
< symtab_hdr
->sh_info
)
1351 sym
= local_syms
+ r_symndx
;
1352 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
1354 sec
= local_sections
[r_symndx
];
1355 rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
1362 /* This is a final link. */
1366 if (r_symndx
< symtab_hdr
->sh_info
)
1368 sym
= local_syms
+ r_symndx
;
1369 sec
= local_sections
[r_symndx
];
1370 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, sec
, rel
);
1374 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1375 while (h
->root
.type
== bfd_link_hash_indirect
1376 || h
->root
.type
== bfd_link_hash_warning
)
1377 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1378 if (h
->root
.type
== bfd_link_hash_defined
1379 || h
->root
.type
== bfd_link_hash_defweak
)
1381 sec
= h
->root
.u
.def
.section
;
1382 if (((r_type
== R_68K_PLT8
1383 || r_type
== R_68K_PLT16
1384 || r_type
== R_68K_PLT32
1385 || r_type
== R_68K_PLT8O
1386 || r_type
== R_68K_PLT16O
1387 || r_type
== R_68K_PLT32O
)
1388 && h
->plt
.offset
!= (bfd_vma
) -1
1389 && elf_hash_table (info
)->dynamic_sections_created
)
1390 || ((r_type
== R_68K_GOT8O
1391 || r_type
== R_68K_GOT16O
1392 || r_type
== R_68K_GOT32O
1393 || ((r_type
== R_68K_GOT8
1394 || r_type
== R_68K_GOT16
1395 || r_type
== R_68K_GOT32
)
1396 && strcmp (h
->root
.root
.string
,
1397 "_GLOBAL_OFFSET_TABLE_") != 0))
1398 && elf_hash_table (info
)->dynamic_sections_created
1400 || (! info
->symbolic
&& h
->dynindx
!= -1)
1401 || (h
->elf_link_hash_flags
1402 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
1404 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1405 || (h
->elf_link_hash_flags
1406 & ELF_LINK_HASH_DEF_REGULAR
) == 0)
1407 && ((input_section
->flags
& SEC_ALLOC
) != 0
1408 /* DWARF will emit R_68K_32 relocations in its
1409 sections against symbols defined externally
1410 in shared libraries. We can't do anything
1412 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
1413 && (h
->elf_link_hash_flags
1414 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0))
1415 && (r_type
== R_68K_8
1416 || r_type
== R_68K_16
1417 || r_type
== R_68K_32
1418 || r_type
== R_68K_PC8
1419 || r_type
== R_68K_PC16
1420 || r_type
== R_68K_PC32
)))
1422 /* In these cases, we don't need the relocation
1423 value. We check specially because in some
1424 obscure cases sec->output_section will be NULL. */
1428 relocation
= (h
->root
.u
.def
.value
1429 + sec
->output_section
->vma
1430 + sec
->output_offset
);
1432 else if (h
->root
.type
== bfd_link_hash_undefweak
)
1434 else if (info
->shared
1435 && (!info
->symbolic
|| info
->allow_shlib_undefined
)
1436 && !info
->no_undefined
1437 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
1441 if (!(info
->callbacks
->undefined_symbol
1442 (info
, h
->root
.root
.string
, input_bfd
,
1443 input_section
, rel
->r_offset
,
1444 (!info
->shared
|| info
->no_undefined
1445 || ELF_ST_VISIBILITY (h
->other
)))))
1456 /* Relocation is to the address of the entry for this symbol
1457 in the global offset table. */
1459 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
1465 /* Relocation is the offset of the entry for this symbol in
1466 the global offset table. */
1473 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1474 BFD_ASSERT (sgot
!= NULL
);
1479 off
= h
->got
.offset
;
1480 BFD_ASSERT (off
!= (bfd_vma
) -1);
1482 if (!elf_hash_table (info
)->dynamic_sections_created
1484 && (info
->symbolic
|| h
->dynindx
== -1)
1485 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
1487 /* This is actually a static link, or it is a
1488 -Bsymbolic link and the symbol is defined
1489 locally, or the symbol was forced to be local
1490 because of a version file.. We must initialize
1491 this entry in the global offset table. Since
1492 the offset must always be a multiple of 4, we
1493 use the least significant bit to record whether
1494 we have initialized it already.
1496 When doing a dynamic link, we create a .rela.got
1497 relocation entry to initialize the value. This
1498 is done in the finish_dynamic_symbol routine. */
1503 bfd_put_32 (output_bfd
, relocation
,
1504 sgot
->contents
+ off
);
1511 BFD_ASSERT (local_got_offsets
!= NULL
1512 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
1514 off
= local_got_offsets
[r_symndx
];
1516 /* The offset must always be a multiple of 4. We use
1517 the least significant bit to record whether we have
1518 already generated the necessary reloc. */
1523 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1528 Elf_Internal_Rela outrel
;
1530 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1531 BFD_ASSERT (srelgot
!= NULL
);
1533 outrel
.r_offset
= (sgot
->output_section
->vma
1534 + sgot
->output_offset
1536 outrel
.r_info
= ELF32_R_INFO (0, R_68K_RELATIVE
);
1537 outrel
.r_addend
= relocation
;
1538 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1539 (((Elf32_External_Rela
*)
1541 + srelgot
->reloc_count
));
1542 ++srelgot
->reloc_count
;
1545 local_got_offsets
[r_symndx
] |= 1;
1549 relocation
= sgot
->output_offset
+ off
;
1550 if (r_type
== R_68K_GOT8O
1551 || r_type
== R_68K_GOT16O
1552 || r_type
== R_68K_GOT32O
)
1554 /* This relocation does not use the addend. */
1558 relocation
+= sgot
->output_section
->vma
;
1565 /* Relocation is to the entry for this symbol in the
1566 procedure linkage table. */
1568 /* Resolve a PLTxx reloc against a local symbol directly,
1569 without using the procedure linkage table. */
1573 if (h
->plt
.offset
== (bfd_vma
) -1
1574 || !elf_hash_table (info
)->dynamic_sections_created
)
1576 /* We didn't make a PLT entry for this symbol. This
1577 happens when statically linking PIC code, or when
1578 using -Bsymbolic. */
1584 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1585 BFD_ASSERT (splt
!= NULL
);
1588 relocation
= (splt
->output_section
->vma
1589 + splt
->output_offset
1596 /* Relocation is the offset of the entry for this symbol in
1597 the procedure linkage table. */
1598 BFD_ASSERT (h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1);
1602 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1603 BFD_ASSERT (splt
!= NULL
);
1606 relocation
= h
->plt
.offset
;
1608 /* This relocation does not use the addend. */
1624 && (input_section
->flags
& SEC_ALLOC
) != 0
1625 && ((r_type
!= R_68K_PC8
1626 && r_type
!= R_68K_PC16
1627 && r_type
!= R_68K_PC32
)
1629 || (h
->elf_link_hash_flags
1630 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
1632 Elf_Internal_Rela outrel
;
1633 boolean skip
, relocate
;
1635 /* When generating a shared object, these relocations
1636 are copied into the output file to be resolved at run
1643 name
= (bfd_elf_string_from_elf_section
1645 elf_elfheader (input_bfd
)->e_shstrndx
,
1646 elf_section_data (input_section
)->rel_hdr
.sh_name
));
1650 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
1651 && strcmp (bfd_get_section_name (input_bfd
,
1655 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1656 BFD_ASSERT (sreloc
!= NULL
);
1663 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
1665 if (outrel
.r_offset
== (bfd_vma
) -1)
1667 else if (outrel
.r_offset
== (bfd_vma
) -2)
1668 skip
= true, relocate
= true;
1669 outrel
.r_offset
+= (input_section
->output_section
->vma
1670 + input_section
->output_offset
);
1673 memset (&outrel
, 0, sizeof outrel
);
1674 /* h->dynindx may be -1 if the symbol was marked to
1677 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1678 || (h
->elf_link_hash_flags
1679 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
1681 BFD_ASSERT (h
->dynindx
!= -1);
1682 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1683 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1687 if (r_type
== R_68K_32
)
1690 outrel
.r_info
= ELF32_R_INFO (0, R_68K_RELATIVE
);
1691 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1698 sec
= local_sections
[r_symndx
];
1701 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
1703 == bfd_link_hash_defweak
));
1704 sec
= h
->root
.u
.def
.section
;
1706 if (sec
!= NULL
&& bfd_is_abs_section (sec
))
1708 else if (sec
== NULL
|| sec
->owner
== NULL
)
1710 bfd_set_error (bfd_error_bad_value
);
1717 osec
= sec
->output_section
;
1718 indx
= elf_section_data (osec
)->dynindx
;
1719 BFD_ASSERT (indx
> 0);
1722 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
1723 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1727 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1728 (((Elf32_External_Rela
*)
1730 + sreloc
->reloc_count
));
1731 ++sreloc
->reloc_count
;
1733 /* This reloc will be computed at runtime, so there's no
1734 need to do anything now, except for R_68K_32
1735 relocations that have been turned into
1743 case R_68K_GNU_VTINHERIT
:
1744 case R_68K_GNU_VTENTRY
:
1745 /* These are no-ops in the end. */
1752 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1753 contents
, rel
->r_offset
,
1754 relocation
, rel
->r_addend
);
1756 if (r
!= bfd_reloc_ok
)
1761 case bfd_reloc_outofrange
:
1763 case bfd_reloc_overflow
:
1768 name
= h
->root
.root
.string
;
1771 name
= bfd_elf_string_from_elf_section (input_bfd
,
1772 symtab_hdr
->sh_link
,
1777 name
= bfd_section_name (input_bfd
, sec
);
1779 if (!(info
->callbacks
->reloc_overflow
1780 (info
, name
, howto
->name
, (bfd_vma
) 0,
1781 input_bfd
, input_section
, rel
->r_offset
)))
1792 /* Finish up dynamic symbol handling. We set the contents of various
1793 dynamic sections here. */
1796 elf_m68k_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1798 struct bfd_link_info
*info
;
1799 struct elf_link_hash_entry
*h
;
1800 Elf_Internal_Sym
*sym
;
1803 int plt_off1
, plt_off2
, plt_off3
;
1805 dynobj
= elf_hash_table (info
)->dynobj
;
1807 if (h
->plt
.offset
!= (bfd_vma
) -1)
1814 Elf_Internal_Rela rela
;
1816 /* This symbol has an entry in the procedure linkage table. Set
1819 BFD_ASSERT (h
->dynindx
!= -1);
1821 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1822 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
1823 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1824 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
1826 /* Get the index in the procedure linkage table which
1827 corresponds to this symbol. This is the index of this symbol
1828 in all the symbols for which we are making plt entries. The
1829 first entry in the procedure linkage table is reserved. */
1830 if ( CPU32_FLAG (output_bfd
))
1831 plt_index
= h
->plt
.offset
/ PLT_CPU32_ENTRY_SIZE
- 1;
1833 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1835 /* Get the offset into the .got table of the entry that
1836 corresponds to this function. Each .got entry is 4 bytes.
1837 The first three are reserved. */
1838 got_offset
= (plt_index
+ 3) * 4;
1840 if ( CPU32_FLAG (output_bfd
))
1842 /* Fill in the entry in the procedure linkage table. */
1843 memcpy (splt
->contents
+ h
->plt
.offset
, elf_cpu32_plt_entry
,
1844 PLT_CPU32_ENTRY_SIZE
);
1851 /* Fill in the entry in the procedure linkage table. */
1852 memcpy (splt
->contents
+ h
->plt
.offset
, elf_m68k_plt_entry
,
1859 /* The offset is relative to the first extension word. */
1860 bfd_put_32 (output_bfd
,
1861 (sgot
->output_section
->vma
1862 + sgot
->output_offset
1864 - (splt
->output_section
->vma
1865 + h
->plt
.offset
+ 2)),
1866 splt
->contents
+ h
->plt
.offset
+ plt_off1
);
1868 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
1869 splt
->contents
+ h
->plt
.offset
+ plt_off2
);
1870 bfd_put_32 (output_bfd
, - (h
->plt
.offset
+ plt_off3
),
1871 splt
->contents
+ h
->plt
.offset
+ plt_off3
);
1873 /* Fill in the entry in the global offset table. */
1874 bfd_put_32 (output_bfd
,
1875 (splt
->output_section
->vma
1876 + splt
->output_offset
1879 sgot
->contents
+ got_offset
);
1881 /* Fill in the entry in the .rela.plt section. */
1882 rela
.r_offset
= (sgot
->output_section
->vma
1883 + sgot
->output_offset
1885 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_JMP_SLOT
);
1887 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1888 ((Elf32_External_Rela
*) srela
->contents
1891 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1893 /* Mark the symbol as undefined, rather than as defined in
1894 the .plt section. Leave the value alone. */
1895 sym
->st_shndx
= SHN_UNDEF
;
1899 if (h
->got
.offset
!= (bfd_vma
) -1)
1903 Elf_Internal_Rela rela
;
1905 /* This symbol has an entry in the global offset table. Set it
1908 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1909 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
1910 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1912 rela
.r_offset
= (sgot
->output_section
->vma
1913 + sgot
->output_offset
1914 + (h
->got
.offset
&~ (bfd_vma
) 1));
1916 /* If this is a -Bsymbolic link, and the symbol is defined
1917 locally, we just want to emit a RELATIVE reloc. Likewise if
1918 the symbol was forced to be local because of a version file.
1919 The entry in the global offset table will already have been
1920 initialized in the relocate_section function. */
1922 && (info
->symbolic
|| h
->dynindx
== -1)
1923 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
))
1925 rela
.r_info
= ELF32_R_INFO (0, R_68K_RELATIVE
);
1926 rela
.r_addend
= bfd_get_signed_32 (output_bfd
,
1928 + (h
->got
.offset
&~ (bfd_vma
) 1)));
1932 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1933 sgot
->contents
+ (h
->got
.offset
&~ (bfd_vma
) 1));
1934 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_GLOB_DAT
);
1938 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1939 ((Elf32_External_Rela
*) srela
->contents
1940 + srela
->reloc_count
));
1941 ++srela
->reloc_count
;
1944 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
1947 Elf_Internal_Rela rela
;
1949 /* This symbol needs a copy reloc. Set it up. */
1951 BFD_ASSERT (h
->dynindx
!= -1
1952 && (h
->root
.type
== bfd_link_hash_defined
1953 || h
->root
.type
== bfd_link_hash_defweak
));
1955 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
1957 BFD_ASSERT (s
!= NULL
);
1959 rela
.r_offset
= (h
->root
.u
.def
.value
1960 + h
->root
.u
.def
.section
->output_section
->vma
1961 + h
->root
.u
.def
.section
->output_offset
);
1962 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_68K_COPY
);
1964 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1965 ((Elf32_External_Rela
*) s
->contents
1970 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1971 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1972 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
1973 sym
->st_shndx
= SHN_ABS
;
1978 /* Finish up the dynamic sections. */
1981 elf_m68k_finish_dynamic_sections (output_bfd
, info
)
1983 struct bfd_link_info
*info
;
1989 dynobj
= elf_hash_table (info
)->dynobj
;
1991 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
1992 BFD_ASSERT (sgot
!= NULL
);
1993 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
1995 if (elf_hash_table (info
)->dynamic_sections_created
)
1998 Elf32_External_Dyn
*dyncon
, *dynconend
;
2000 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2001 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
2003 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
2004 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
2005 for (; dyncon
< dynconend
; dyncon
++)
2007 Elf_Internal_Dyn dyn
;
2011 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2024 s
= bfd_get_section_by_name (output_bfd
, name
);
2025 BFD_ASSERT (s
!= NULL
);
2026 dyn
.d_un
.d_ptr
= s
->vma
;
2027 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2031 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
2032 BFD_ASSERT (s
!= NULL
);
2033 if (s
->_cooked_size
!= 0)
2034 dyn
.d_un
.d_val
= s
->_cooked_size
;
2036 dyn
.d_un
.d_val
= s
->_raw_size
;
2037 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2041 /* The procedure linkage table relocs (DT_JMPREL) should
2042 not be included in the overall relocs (DT_RELA).
2043 Therefore, we override the DT_RELASZ entry here to
2044 make it not include the JMPREL relocs. Since the
2045 linker script arranges for .rela.plt to follow all
2046 other relocation sections, we don't have to worry
2047 about changing the DT_RELA entry. */
2048 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
2051 if (s
->_cooked_size
!= 0)
2052 dyn
.d_un
.d_val
-= s
->_cooked_size
;
2054 dyn
.d_un
.d_val
-= s
->_raw_size
;
2056 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2061 /* Fill in the first entry in the procedure linkage table. */
2062 if (splt
->_raw_size
> 0)
2064 if (!CPU32_FLAG (output_bfd
))
2066 memcpy (splt
->contents
, elf_m68k_plt0_entry
, PLT_ENTRY_SIZE
);
2067 bfd_put_32 (output_bfd
,
2068 (sgot
->output_section
->vma
2069 + sgot
->output_offset
+ 4
2070 - (splt
->output_section
->vma
+ 2)),
2071 splt
->contents
+ 4);
2072 bfd_put_32 (output_bfd
,
2073 (sgot
->output_section
->vma
2074 + sgot
->output_offset
+ 8
2075 - (splt
->output_section
->vma
+ 10)),
2076 splt
->contents
+ 12);
2077 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
2082 memcpy (splt
->contents
, elf_cpu32_plt0_entry
, PLT_CPU32_ENTRY_SIZE
);
2083 bfd_put_32 (output_bfd
,
2084 (sgot
->output_section
->vma
2085 + sgot
->output_offset
+ 4
2086 - (splt
->output_section
->vma
+ 2)),
2087 splt
->contents
+ 4);
2088 bfd_put_32 (output_bfd
,
2089 (sgot
->output_section
->vma
2090 + sgot
->output_offset
+ 8
2091 - (splt
->output_section
->vma
+ 10)),
2092 splt
->contents
+ 12);
2093 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
2094 = PLT_CPU32_ENTRY_SIZE
;
2099 /* Fill in the first three entries in the global offset table. */
2100 if (sgot
->_raw_size
> 0)
2103 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
2105 bfd_put_32 (output_bfd
,
2106 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
2108 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
2109 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
2112 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
2117 /* Given a .data section and a .emreloc in-memory section, store
2118 relocation information into the .emreloc section which can be
2119 used at runtime to relocate the section. This is called by the
2120 linker when the --embedded-relocs switch is used. This is called
2121 after the add_symbols entry point has been called for all the
2122 objects, and before the final_link entry point is called. */
2125 bfd_m68k_elf32_create_embedded_relocs (abfd
, info
, datasec
, relsec
, errmsg
)
2127 struct bfd_link_info
*info
;
2132 Elf_Internal_Shdr
*symtab_hdr
;
2133 Elf_Internal_Shdr
*shndx_hdr
;
2134 Elf32_External_Sym
*extsyms
;
2135 Elf32_External_Sym
*free_extsyms
= NULL
;
2136 Elf_External_Sym_Shndx
*shndx_buf
= NULL
;
2137 Elf_Internal_Rela
*internal_relocs
;
2138 Elf_Internal_Rela
*free_relocs
= NULL
;
2139 Elf_Internal_Rela
*irel
, *irelend
;
2143 BFD_ASSERT (! info
->relocateable
);
2147 if (datasec
->reloc_count
== 0)
2150 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2151 /* Read this BFD's symbols if we haven't done so already, or get the cached
2152 copy if it exists. */
2153 if (symtab_hdr
->contents
!= NULL
)
2154 extsyms
= (Elf32_External_Sym
*) symtab_hdr
->contents
;
2157 /* Go get them off disk. */
2158 amt
= symtab_hdr
->sh_info
* sizeof (Elf32_External_Sym
);
2159 if (info
->keep_memory
)
2160 extsyms
= (Elf32_External_Sym
*) bfd_alloc (abfd
, amt
);
2162 extsyms
= (Elf32_External_Sym
*) bfd_malloc (amt
);
2163 if (extsyms
== NULL
)
2165 if (! info
->keep_memory
)
2166 free_extsyms
= extsyms
;
2167 if (bfd_seek (abfd
, symtab_hdr
->sh_offset
, SEEK_SET
) != 0
2168 || bfd_bread (extsyms
, amt
, abfd
) != amt
)
2170 if (info
->keep_memory
)
2171 symtab_hdr
->contents
= (unsigned char *) extsyms
;
2174 shndx_hdr
= &elf_tdata (abfd
)->symtab_shndx_hdr
;
2175 if (shndx_hdr
->sh_size
!= 0)
2177 amt
= symtab_hdr
->sh_info
* sizeof (Elf_External_Sym_Shndx
);
2178 shndx_buf
= (Elf_External_Sym_Shndx
*) bfd_malloc (amt
);
2179 if (shndx_buf
== NULL
)
2181 if (bfd_seek (abfd
, shndx_hdr
->sh_offset
, SEEK_SET
) != 0
2182 || bfd_bread ((PTR
) shndx_buf
, amt
, abfd
) != amt
)
2186 /* Get a copy of the native relocations. */
2187 internal_relocs
= (_bfd_elf32_link_read_relocs
2188 (abfd
, datasec
, (PTR
) NULL
, (Elf_Internal_Rela
*) NULL
,
2189 info
->keep_memory
));
2190 if (internal_relocs
== NULL
)
2192 if (! info
->keep_memory
)
2193 free_relocs
= internal_relocs
;
2195 amt
= (bfd_size_type
) datasec
->reloc_count
* 12;
2196 relsec
->contents
= (bfd_byte
*) bfd_alloc (abfd
, amt
);
2197 if (relsec
->contents
== NULL
)
2200 p
= relsec
->contents
;
2202 irelend
= internal_relocs
+ datasec
->reloc_count
;
2203 for (irel
= internal_relocs
; irel
< irelend
; irel
++, p
+= 12)
2205 asection
*targetsec
;
2207 /* We are going to write a four byte longword into the runtime
2208 reloc section. The longword will be the address in the data
2209 section which must be relocated. It is followed by the name
2210 of the target section NUL-padded or truncated to 8
2213 /* We can only relocate absolute longword relocs at run time. */
2214 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_68K_32
)
2216 *errmsg
= _("unsupported reloc type");
2217 bfd_set_error (bfd_error_bad_value
);
2221 /* Get the target section referred to by the reloc. */
2222 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
2224 Elf32_External_Sym
*esym
;
2225 Elf_External_Sym_Shndx
*shndx
;
2226 Elf_Internal_Sym isym
;
2228 /* A local symbol. */
2229 esym
= extsyms
+ ELF32_R_SYM (irel
->r_info
);
2230 shndx
= shndx_buf
+ (shndx_buf
? ELF32_R_SYM (irel
->r_info
) : 0);
2231 bfd_elf32_swap_symbol_in (abfd
, esym
, shndx
, &isym
);
2233 targetsec
= bfd_section_from_elf_index (abfd
, isym
.st_shndx
);
2238 struct elf_link_hash_entry
*h
;
2240 /* An external symbol. */
2241 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
2242 h
= elf_sym_hashes (abfd
)[indx
];
2243 BFD_ASSERT (h
!= NULL
);
2244 if (h
->root
.type
== bfd_link_hash_defined
2245 || h
->root
.type
== bfd_link_hash_defweak
)
2246 targetsec
= h
->root
.u
.def
.section
;
2251 bfd_put_32 (abfd
, irel
->r_offset
+ datasec
->output_offset
, p
);
2252 memset (p
+ 4, 0, 8);
2253 if (targetsec
!= NULL
)
2254 strncpy (p
+ 4, targetsec
->output_section
->name
, 8);
2257 if (shndx_buf
!= NULL
)
2259 if (free_extsyms
!= NULL
)
2260 free (free_extsyms
);
2261 if (free_relocs
!= NULL
)
2266 if (shndx_buf
!= NULL
)
2268 if (free_extsyms
!= NULL
)
2269 free (free_extsyms
);
2270 if (free_relocs
!= NULL
)
2275 static enum elf_reloc_type_class
2276 elf32_m68k_reloc_type_class (rela
)
2277 const Elf_Internal_Rela
*rela
;
2279 switch ((int) ELF32_R_TYPE (rela
->r_info
))
2281 case R_68K_RELATIVE
:
2282 return reloc_class_relative
;
2283 case R_68K_JMP_SLOT
:
2284 return reloc_class_plt
;
2286 return reloc_class_copy
;
2288 return reloc_class_normal
;
2292 #define TARGET_BIG_SYM bfd_elf32_m68k_vec
2293 #define TARGET_BIG_NAME "elf32-m68k"
2294 #define ELF_MACHINE_CODE EM_68K
2295 #define ELF_MAXPAGESIZE 0x2000
2296 #define elf_backend_create_dynamic_sections \
2297 _bfd_elf_create_dynamic_sections
2298 #define bfd_elf32_bfd_link_hash_table_create \
2299 elf_m68k_link_hash_table_create
2300 #define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link
2302 #define elf_backend_check_relocs elf_m68k_check_relocs
2303 #define elf_backend_adjust_dynamic_symbol \
2304 elf_m68k_adjust_dynamic_symbol
2305 #define elf_backend_size_dynamic_sections \
2306 elf_m68k_size_dynamic_sections
2307 #define elf_backend_relocate_section elf_m68k_relocate_section
2308 #define elf_backend_finish_dynamic_symbol \
2309 elf_m68k_finish_dynamic_symbol
2310 #define elf_backend_finish_dynamic_sections \
2311 elf_m68k_finish_dynamic_sections
2312 #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook
2313 #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook
2314 #define bfd_elf32_bfd_merge_private_bfd_data \
2315 elf32_m68k_merge_private_bfd_data
2316 #define bfd_elf32_bfd_set_private_flags \
2317 elf32_m68k_set_private_flags
2318 #define bfd_elf32_bfd_print_private_bfd_data \
2319 elf32_m68k_print_private_bfd_data
2320 #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class
2322 #define elf_backend_can_gc_sections 1
2323 #define elf_backend_can_refcount 1
2324 #define elf_backend_want_got_plt 1
2325 #define elf_backend_plt_readonly 1
2326 #define elf_backend_want_plt_sym 0
2327 #define elf_backend_got_header_size 12
2329 #include "elf32-target.h"