1 /* Motorola 68k series support for 32-bit ELF
2 Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
28 #include "opcode/m68k.h"
30 static reloc_howto_type *reloc_type_lookup
31 PARAMS ((bfd *, bfd_reloc_code_real_type));
32 static void rtype_to_howto
33 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
34 static struct bfd_hash_entry *elf_m68k_link_hash_newfunc
35 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
36 static struct bfd_link_hash_table *elf_m68k_link_hash_table_create
38 static bfd_boolean elf_m68k_check_relocs
39 PARAMS ((bfd *, struct bfd_link_info *, asection *,
40 const Elf_Internal_Rela *));
41 static bfd_boolean elf_m68k_adjust_dynamic_symbol
42 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
43 static bfd_boolean elf_m68k_size_dynamic_sections
44 PARAMS ((bfd *, struct bfd_link_info *));
45 static bfd_boolean elf_m68k_discard_copies
46 PARAMS ((struct elf_link_hash_entry *, PTR));
47 static bfd_boolean elf_m68k_relocate_section
48 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
49 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
50 static bfd_boolean elf_m68k_finish_dynamic_symbol
51 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
53 static bfd_boolean elf_m68k_finish_dynamic_sections
54 PARAMS ((bfd *, struct bfd_link_info *));
56 static bfd_boolean elf32_m68k_set_private_flags
57 PARAMS ((bfd *, flagword));
58 static bfd_boolean elf32_m68k_merge_private_bfd_data
59 PARAMS ((bfd *, bfd *));
60 static bfd_boolean elf32_m68k_print_private_bfd_data
61 PARAMS ((bfd *, PTR));
62 static enum elf_reloc_type_class elf32_m68k_reloc_type_class
63 PARAMS ((const Elf_Internal_Rela *));
65 static reloc_howto_type howto_table[] = {
66 HOWTO(R_68K_NONE, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", FALSE, 0, 0x00000000,FALSE),
67 HOWTO(R_68K_32, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", FALSE, 0, 0xffffffff,FALSE),
68 HOWTO(R_68K_16, 0, 1,16, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", FALSE, 0, 0x0000ffff,FALSE),
69 HOWTO(R_68K_8, 0, 0, 8, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", FALSE, 0, 0x000000ff,FALSE),
70 HOWTO(R_68K_PC32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PC32", FALSE, 0, 0xffffffff,TRUE),
71 HOWTO(R_68K_PC16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", FALSE, 0, 0x0000ffff,TRUE),
72 HOWTO(R_68K_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", FALSE, 0, 0x000000ff,TRUE),
73 HOWTO(R_68K_GOT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32", FALSE, 0, 0xffffffff,TRUE),
74 HOWTO(R_68K_GOT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", FALSE, 0, 0x0000ffff,TRUE),
75 HOWTO(R_68K_GOT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", FALSE, 0, 0x000000ff,TRUE),
76 HOWTO(R_68K_GOT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32O", FALSE, 0, 0xffffffff,FALSE),
77 HOWTO(R_68K_GOT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", FALSE, 0, 0x0000ffff,FALSE),
78 HOWTO(R_68K_GOT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", FALSE, 0, 0x000000ff,FALSE),
79 HOWTO(R_68K_PLT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32", FALSE, 0, 0xffffffff,TRUE),
80 HOWTO(R_68K_PLT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", FALSE, 0, 0x0000ffff,TRUE),
81 HOWTO(R_68K_PLT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", FALSE, 0, 0x000000ff,TRUE),
82 HOWTO(R_68K_PLT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32O", FALSE, 0, 0xffffffff,FALSE),
83 HOWTO(R_68K_PLT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", FALSE, 0, 0x0000ffff,FALSE),
84 HOWTO(R_68K_PLT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", FALSE, 0, 0x000000ff,FALSE),
85 HOWTO(R_68K_COPY, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", FALSE, 0, 0xffffffff,FALSE),
86 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),
87 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),
88 HOWTO(R_68K_RELATIVE, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_RELATIVE", FALSE, 0, 0xffffffff,FALSE),
89 /* GNU extension to record C++ vtable hierarchy. */
90 HOWTO (R_68K_GNU_VTINHERIT, /* type */
92 2, /* size (0 = byte, 1 = short, 2 = long) */
94 FALSE, /* pc_relative */
96 complain_overflow_dont, /* complain_on_overflow */
97 NULL, /* special_function */
98 "R_68K_GNU_VTINHERIT", /* name */
99 FALSE, /* partial_inplace */
103 /* GNU extension to record C++ vtable member usage. */
104 HOWTO (R_68K_GNU_VTENTRY, /* type */
106 2, /* size (0 = byte, 1 = short, 2 = long) */
108 FALSE, /* pc_relative */
110 complain_overflow_dont, /* complain_on_overflow */
111 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
112 "R_68K_GNU_VTENTRY", /* name */
113 FALSE, /* partial_inplace */
120 rtype_to_howto (abfd, cache_ptr, dst)
121 bfd *abfd ATTRIBUTE_UNUSED;
123 Elf_Internal_Rela *dst;
125 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_68K_max);
126 cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)];
129 #define elf_info_to_howto rtype_to_howto
133 bfd_reloc_code_real_type bfd_val;
136 { BFD_RELOC_NONE, R_68K_NONE },
137 { BFD_RELOC_32, R_68K_32 },
138 { BFD_RELOC_16, R_68K_16 },
139 { BFD_RELOC_8, R_68K_8 },
140 { BFD_RELOC_32_PCREL, R_68K_PC32 },
141 { BFD_RELOC_16_PCREL, R_68K_PC16 },
142 { BFD_RELOC_8_PCREL, R_68K_PC8 },
143 { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 },
144 { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 },
145 { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 },
146 { BFD_RELOC_32_GOTOFF, R_68K_GOT32O },
147 { BFD_RELOC_16_GOTOFF, R_68K_GOT16O },
148 { BFD_RELOC_8_GOTOFF, R_68K_GOT8O },
149 { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 },
150 { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 },
151 { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 },
152 { BFD_RELOC_32_PLTOFF, R_68K_PLT32O },
153 { BFD_RELOC_16_PLTOFF, R_68K_PLT16O },
154 { BFD_RELOC_8_PLTOFF, R_68K_PLT8O },
155 { BFD_RELOC_NONE, R_68K_COPY },
156 { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT },
157 { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT },
158 { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE },
159 { BFD_RELOC_CTOR, R_68K_32 },
160 { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT },
161 { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY },
164 static reloc_howto_type *
165 reloc_type_lookup (abfd, code)
166 bfd *abfd ATTRIBUTE_UNUSED;
167 bfd_reloc_code_real_type code;
170 for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++)
172 if (reloc_map[i].bfd_val == code)
173 return &howto_table[reloc_map[i].elf_val];
178 static reloc_howto_type *
179 reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
183 for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++)
184 if (howto_table[i].name != NULL
185 && strcasecmp (howto_table[i].name, r_name) == 0)
186 return &howto_table[i];
191 #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup
192 #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup
193 #define ELF_ARCH bfd_arch_m68k
195 /* Functions for the m68k ELF linker. */
197 /* The name of the dynamic interpreter. This is put in the .interp
200 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
202 /* Describes one of the various PLT styles. */
204 struct elf_m68k_plt_info
206 /* The size of each PLT entry. */
209 /* The template for the first PLT entry. */
210 const bfd_byte *plt0_entry;
212 /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations.
213 The comments by each member indicate the value that the relocation
216 unsigned int got4; /* .got + 4 */
217 unsigned int got8; /* .got + 8 */
220 /* The template for a symbol's PLT entry. */
221 const bfd_byte *symbol_entry;
223 /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations.
224 The comments by each member indicate the value that the relocation
227 unsigned int got; /* the symbol's .got.plt entry */
228 unsigned int plt; /* .plt */
231 /* The offset of the resolver stub from the start of SYMBOL_ENTRY.
232 The stub starts with "move.l #relocoffset,%d0". */
233 bfd_vma symbol_resolve_entry;
236 /* The size in bytes of an entry in the procedure linkage table. */
238 #define PLT_ENTRY_SIZE 20
240 /* The first entry in a procedure linkage table looks like this. See
241 the SVR4 ABI m68k supplement to see how this works. */
243 static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] =
245 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
246 0, 0, 0, 2, /* + (.got + 4) - . */
247 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */
248 0, 0, 0, 2, /* + (.got + 8) - . */
249 0, 0, 0, 0 /* pad out to 20 bytes. */
252 /* Subsequent entries in a procedure linkage table look like this. */
254 static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] =
256 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */
257 0, 0, 0, 2, /* + (.got.plt entry) - . */
258 0x2f, 0x3c, /* move.l #offset,-(%sp) */
259 0, 0, 0, 0, /* + reloc index */
260 0x60, 0xff, /* bra.l .plt */
261 0, 0, 0, 0 /* + .plt - . */
264 static const struct elf_m68k_plt_info elf_m68k_plt_info = {
266 elf_m68k_plt0_entry, { 4, 12 },
267 elf_m68k_plt_entry, { 4, 16 }, 8
270 #define ISAB_PLT_ENTRY_SIZE 24
272 static const bfd_byte elf_isab_plt0_entry[ISAB_PLT_ENTRY_SIZE] =
274 0x20, 0x3c, /* move.l #offset,%d0 */
275 0, 0, 0, 0, /* + (.got + 4) - . */
276 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */
277 0x20, 0x3c, /* move.l #offset,%d0 */
278 0, 0, 0, 0, /* + (.got + 8) - . */
279 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
280 0x4e, 0xd0, /* jmp (%a0) */
284 /* Subsequent entries in a procedure linkage table look like this. */
286 static const bfd_byte elf_isab_plt_entry[ISAB_PLT_ENTRY_SIZE] =
288 0x20, 0x3c, /* move.l #offset,%d0 */
289 0, 0, 0, 0, /* + (.got.plt entry) - . */
290 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
291 0x4e, 0xd0, /* jmp (%a0) */
292 0x2f, 0x3c, /* move.l #offset,-(%sp) */
293 0, 0, 0, 0, /* + reloc index */
294 0x60, 0xff, /* bra.l .plt */
295 0, 0, 0, 0 /* + .plt - . */
298 static const struct elf_m68k_plt_info elf_isab_plt_info = {
300 elf_isab_plt0_entry, { 2, 12 },
301 elf_isab_plt_entry, { 2, 20 }, 12
304 #define ISAC_PLT_ENTRY_SIZE 24
306 static const bfd_byte elf_isac_plt0_entry[ISAC_PLT_ENTRY_SIZE] =
308 0x20, 0x3c, /* move.l #offset,%d0 */
309 0, 0, 0, 0, /* replaced with .got + 4 - . */
310 0x2e, 0xbb, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),(%sp) */
311 0x20, 0x3c, /* move.l #offset,%d0 */
312 0, 0, 0, 0, /* replaced with .got + 8 - . */
313 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
314 0x4e, 0xd0, /* jmp (%a0) */
318 /* Subsequent entries in a procedure linkage table look like this. */
320 static const bfd_byte elf_isac_plt_entry[ISAC_PLT_ENTRY_SIZE] =
322 0x20, 0x3c, /* move.l #offset,%d0 */
323 0, 0, 0, 0, /* replaced with (.got entry) - . */
324 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
325 0x4e, 0xd0, /* jmp (%a0) */
326 0x2f, 0x3c, /* move.l #offset,-(%sp) */
327 0, 0, 0, 0, /* replaced with offset into relocation table */
328 0x61, 0xff, /* bsr.l .plt */
329 0, 0, 0, 0 /* replaced with .plt - . */
332 static const struct elf_m68k_plt_info elf_isac_plt_info = {
334 elf_isac_plt0_entry, { 2, 12},
335 elf_isac_plt_entry, { 2, 20 }, 12
338 #define CPU32_PLT_ENTRY_SIZE 24
339 /* Procedure linkage table entries for the cpu32 */
340 static const bfd_byte elf_cpu32_plt0_entry[CPU32_PLT_ENTRY_SIZE] =
342 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
343 0, 0, 0, 2, /* + (.got + 4) - . */
344 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
345 0, 0, 0, 2, /* + (.got + 8) - . */
346 0x4e, 0xd1, /* jmp %a1@ */
347 0, 0, 0, 0, /* pad out to 24 bytes. */
351 static const bfd_byte elf_cpu32_plt_entry[CPU32_PLT_ENTRY_SIZE] =
353 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
354 0, 0, 0, 2, /* + (.got.plt entry) - . */
355 0x4e, 0xd1, /* jmp %a1@ */
356 0x2f, 0x3c, /* move.l #offset,-(%sp) */
357 0, 0, 0, 0, /* + reloc index */
358 0x60, 0xff, /* bra.l .plt */
359 0, 0, 0, 0, /* + .plt - . */
363 static const struct elf_m68k_plt_info elf_cpu32_plt_info = {
364 CPU32_PLT_ENTRY_SIZE,
365 elf_cpu32_plt0_entry, { 4, 12 },
366 elf_cpu32_plt_entry, { 4, 18 }, 10
369 /* The m68k linker needs to keep track of the number of relocs that it
370 decides to copy in check_relocs for each symbol. This is so that it
371 can discard PC relative relocs if it doesn't need them when linking
372 with -Bsymbolic. We store the information in a field extending the
373 regular ELF linker hash table. */
375 /* This structure keeps track of the number of PC relative relocs we have
376 copied for a given symbol. */
378 struct elf_m68k_pcrel_relocs_copied
381 struct elf_m68k_pcrel_relocs_copied *next;
382 /* A section in dynobj. */
384 /* Number of relocs copied in this section. */
388 /* m68k ELF linker hash entry. */
390 struct elf_m68k_link_hash_entry
392 struct elf_link_hash_entry root;
394 /* Number of PC relative relocs copied for this symbol. */
395 struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied;
398 #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent))
400 /* m68k ELF linker hash table. */
402 struct elf_m68k_link_hash_table
404 struct elf_link_hash_table root;
406 /* Small local sym to section mapping cache. */
407 struct sym_sec_cache sym_sec;
409 /* The PLT format used by this link, or NULL if the format has not
411 const struct elf_m68k_plt_info *plt_info;
414 /* Get the m68k ELF linker hash table from a link_info structure. */
416 #define elf_m68k_hash_table(p) \
417 ((struct elf_m68k_link_hash_table *) (p)->hash)
419 /* Create an entry in an m68k ELF linker hash table. */
421 static struct bfd_hash_entry *
422 elf_m68k_link_hash_newfunc (entry, table, string)
423 struct bfd_hash_entry *entry;
424 struct bfd_hash_table *table;
427 struct bfd_hash_entry *ret = entry;
429 /* Allocate the structure if it has not already been allocated by a
432 ret = bfd_hash_allocate (table,
433 sizeof (struct elf_m68k_link_hash_entry));
437 /* Call the allocation method of the superclass. */
438 ret = _bfd_elf_link_hash_newfunc (ret, table, string);
440 elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL;
445 /* Create an m68k ELF linker hash table. */
447 static struct bfd_link_hash_table *
448 elf_m68k_link_hash_table_create (abfd)
451 struct elf_m68k_link_hash_table *ret;
452 bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table);
454 ret = (struct elf_m68k_link_hash_table *) bfd_malloc (amt);
455 if (ret == (struct elf_m68k_link_hash_table *) NULL)
458 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
459 elf_m68k_link_hash_newfunc,
460 sizeof (struct elf_m68k_link_hash_entry)))
466 ret->sym_sec.abfd = NULL;
467 ret->plt_info = NULL;
469 return &ret->root.root;
472 /* Set the right machine number. */
475 elf32_m68k_object_p (bfd *abfd)
477 unsigned int mach = 0;
478 unsigned features = 0;
479 flagword eflags = elf_elfheader (abfd)->e_flags;
481 if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
483 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
485 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
489 switch (eflags & EF_M68K_CF_ISA_MASK)
491 case EF_M68K_CF_ISA_A_NODIV:
492 features |= mcfisa_a;
494 case EF_M68K_CF_ISA_A:
495 features |= mcfisa_a|mcfhwdiv;
497 case EF_M68K_CF_ISA_A_PLUS:
498 features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp;
500 case EF_M68K_CF_ISA_B_NOUSP:
501 features |= mcfisa_a|mcfisa_b|mcfhwdiv;
503 case EF_M68K_CF_ISA_B:
504 features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp;
506 case EF_M68K_CF_ISA_C:
507 features |= mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp;
509 case EF_M68K_CF_ISA_C_NODIV:
510 features |= mcfisa_a|mcfisa_c|mcfusp;
513 switch (eflags & EF_M68K_CF_MAC_MASK)
518 case EF_M68K_CF_EMAC:
522 if (eflags & EF_M68K_CF_FLOAT)
526 mach = bfd_m68k_features_to_mach (features);
527 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach);
532 /* Keep m68k-specific flags in the ELF header. */
534 elf32_m68k_set_private_flags (abfd, flags)
538 elf_elfheader (abfd)->e_flags = flags;
539 elf_flags_init (abfd) = TRUE;
543 /* Merge backend specific data from an object file to the output
544 object file when linking. */
546 elf32_m68k_merge_private_bfd_data (ibfd, obfd)
554 const bfd_arch_info_type *arch_info;
556 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
557 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
560 /* Get the merged machine. This checks for incompatibility between
561 Coldfire & non-Coldfire flags, incompability between different
562 Coldfire ISAs, and incompability between different MAC types. */
563 arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE);
567 bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach);
569 in_flags = elf_elfheader (ibfd)->e_flags;
570 if (!elf_flags_init (obfd))
572 elf_flags_init (obfd) = TRUE;
573 out_flags = in_flags;
577 out_flags = elf_elfheader (obfd)->e_flags;
578 unsigned int variant_mask;
580 if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
582 else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
584 else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
587 variant_mask = EF_M68K_CF_ISA_MASK;
589 in_isa = (in_flags & variant_mask);
590 out_isa = (out_flags & variant_mask);
591 if (in_isa > out_isa)
592 out_flags ^= in_isa ^ out_isa;
593 if (((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32
594 && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
595 || ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO
596 && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32))
597 out_flags = EF_M68K_FIDO;
599 out_flags |= in_flags ^ in_isa;
601 elf_elfheader (obfd)->e_flags = out_flags;
606 /* Display the flags field. */
608 elf32_m68k_print_private_bfd_data (abfd, ptr)
612 FILE *file = (FILE *) ptr;
613 flagword eflags = elf_elfheader (abfd)->e_flags;
615 BFD_ASSERT (abfd != NULL && ptr != NULL);
617 /* Print normal ELF private data. */
618 _bfd_elf_print_private_bfd_data (abfd, ptr);
620 /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
622 /* xgettext:c-format */
623 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
625 if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
626 fprintf (file, " [m68000]");
627 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
628 fprintf (file, " [cpu32]");
629 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
630 fprintf (file, " [fido]");
633 if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CFV4E)
634 fprintf (file, " [cfv4e]");
636 if (eflags & EF_M68K_CF_ISA_MASK)
638 char const *isa = _("unknown");
639 char const *mac = _("unknown");
640 char const *additional = "";
642 switch (eflags & EF_M68K_CF_ISA_MASK)
644 case EF_M68K_CF_ISA_A_NODIV:
646 additional = " [nodiv]";
648 case EF_M68K_CF_ISA_A:
651 case EF_M68K_CF_ISA_A_PLUS:
654 case EF_M68K_CF_ISA_B_NOUSP:
656 additional = " [nousp]";
658 case EF_M68K_CF_ISA_B:
661 case EF_M68K_CF_ISA_C:
664 case EF_M68K_CF_ISA_C_NODIV:
666 additional = " [nodiv]";
669 fprintf (file, " [isa %s]%s", isa, additional);
670 if (eflags & EF_M68K_CF_FLOAT)
671 fprintf (file, " [float]");
672 switch (eflags & EF_M68K_CF_MAC_MASK)
680 case EF_M68K_CF_EMAC:
685 fprintf (file, " [%s]", mac);
693 /* Look through the relocs for a section during the first phase, and
694 allocate space in the global offset table or procedure linkage
698 elf_m68k_check_relocs (abfd, info, sec, relocs)
700 struct bfd_link_info *info;
702 const Elf_Internal_Rela *relocs;
705 Elf_Internal_Shdr *symtab_hdr;
706 struct elf_link_hash_entry **sym_hashes;
707 bfd_signed_vma *local_got_refcounts;
708 const Elf_Internal_Rela *rel;
709 const Elf_Internal_Rela *rel_end;
714 if (info->relocatable)
717 dynobj = elf_hash_table (info)->dynobj;
718 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
719 sym_hashes = elf_sym_hashes (abfd);
720 local_got_refcounts = elf_local_got_refcounts (abfd);
726 rel_end = relocs + sec->reloc_count;
727 for (rel = relocs; rel < rel_end; rel++)
729 unsigned long r_symndx;
730 struct elf_link_hash_entry *h;
732 r_symndx = ELF32_R_SYM (rel->r_info);
734 if (r_symndx < symtab_hdr->sh_info)
738 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
739 while (h->root.type == bfd_link_hash_indirect
740 || h->root.type == bfd_link_hash_warning)
741 h = (struct elf_link_hash_entry *) h->root.u.i.link;
744 switch (ELF32_R_TYPE (rel->r_info))
750 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
756 /* This symbol requires a global offset table entry. */
760 /* Create the .got section. */
761 elf_hash_table (info)->dynobj = dynobj = abfd;
762 if (!_bfd_elf_create_got_section (dynobj, info))
768 sgot = bfd_get_section_by_name (dynobj, ".got");
769 BFD_ASSERT (sgot != NULL);
773 && (h != NULL || info->shared))
775 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
778 srelgot = bfd_make_section_with_flags (dynobj,
787 || !bfd_set_section_alignment (dynobj, srelgot, 2))
794 if (h->got.refcount == 0)
796 /* Make sure this symbol is output as a dynamic symbol. */
800 if (!bfd_elf_link_record_dynamic_symbol (info, h))
804 /* Allocate space in the .got section. */
806 /* Allocate relocation space. */
807 srelgot->size += sizeof (Elf32_External_Rela);
813 /* This is a global offset table entry for a local symbol. */
814 if (local_got_refcounts == NULL)
818 size = symtab_hdr->sh_info;
819 size *= sizeof (bfd_signed_vma);
820 local_got_refcounts = ((bfd_signed_vma *)
821 bfd_zalloc (abfd, size));
822 if (local_got_refcounts == NULL)
824 elf_local_got_refcounts (abfd) = local_got_refcounts;
826 if (local_got_refcounts[r_symndx] == 0)
831 /* If we are generating a shared object, we need to
832 output a R_68K_RELATIVE reloc so that the dynamic
833 linker can adjust this GOT entry. */
834 srelgot->size += sizeof (Elf32_External_Rela);
837 local_got_refcounts[r_symndx]++;
844 /* This symbol requires a procedure linkage table entry. We
845 actually build the entry in adjust_dynamic_symbol,
846 because this might be a case of linking PIC code which is
847 never referenced by a dynamic object, in which case we
848 don't need to generate a procedure linkage table entry
851 /* If this is a local symbol, we resolve it directly without
852 creating a procedure linkage table entry. */
863 /* This symbol requires a procedure linkage table entry. */
867 /* It does not make sense to have this relocation for a
868 local symbol. FIXME: does it? How to handle it if
869 it does make sense? */
870 bfd_set_error (bfd_error_bad_value);
874 /* Make sure this symbol is output as a dynamic symbol. */
878 if (!bfd_elf_link_record_dynamic_symbol (info, h))
889 /* If we are creating a shared library and this is not a local
890 symbol, we need to copy the reloc into the shared library.
891 However when linking with -Bsymbolic and this is a global
892 symbol which is defined in an object we are including in the
893 link (i.e., DEF_REGULAR is set), then we can resolve the
894 reloc directly. At this point we have not seen all the input
895 files, so it is possible that DEF_REGULAR is not set now but
896 will be set later (it is never cleared). We account for that
897 possibility below by storing information in the
898 pcrel_relocs_copied field of the hash table entry. */
900 && (sec->flags & SEC_ALLOC) != 0
903 || h->root.type == bfd_link_hash_defweak
904 || !h->def_regular)))
908 /* Make sure a plt entry is created for this symbol if
909 it turns out to be a function defined by a dynamic
921 /* Make sure a plt entry is created for this symbol if it
922 turns out to be a function defined by a dynamic object. */
926 /* If we are creating a shared library, we need to copy the
927 reloc into the shared library. */
929 && (sec->flags & SEC_ALLOC) != 0)
931 /* When creating a shared object, we must copy these
932 reloc types into the output file. We create a reloc
933 section in dynobj and make room for this reloc. */
938 name = (bfd_elf_string_from_elf_section
940 elf_elfheader (abfd)->e_shstrndx,
941 elf_section_data (sec)->rel_hdr.sh_name));
945 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
946 && strcmp (bfd_get_section_name (abfd, sec),
949 sreloc = bfd_get_section_by_name (dynobj, name);
952 sreloc = bfd_make_section_with_flags (dynobj,
961 || !bfd_set_section_alignment (dynobj, sreloc, 2))
964 elf_section_data (sec)->sreloc = sreloc;
967 if (sec->flags & SEC_READONLY
968 /* Don't set DF_TEXTREL yet for PC relative
969 relocations, they might be discarded later. */
970 && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8
971 || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
972 || ELF32_R_TYPE (rel->r_info) == R_68K_PC32))
973 info->flags |= DF_TEXTREL;
975 sreloc->size += sizeof (Elf32_External_Rela);
977 /* We count the number of PC relative relocations we have
978 entered for this symbol, so that we can discard them
979 again if, in the -Bsymbolic case, the symbol is later
980 defined by a regular object, or, in the normal shared
981 case, the symbol is forced to be local. Note that this
982 function is only called if we are using an m68kelf linker
983 hash table, which means that h is really a pointer to an
984 elf_m68k_link_hash_entry. */
985 if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8
986 || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
987 || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)
989 struct elf_m68k_pcrel_relocs_copied *p;
990 struct elf_m68k_pcrel_relocs_copied **head;
994 struct elf_m68k_link_hash_entry *eh
995 = elf_m68k_hash_entry (h);
996 head = &eh->pcrel_relocs_copied;
1003 s = (bfd_section_from_r_symndx
1004 (abfd, &elf_m68k_hash_table (info)->sym_sec,
1009 vpp = &elf_section_data (s)->local_dynrel;
1010 head = (struct elf_m68k_pcrel_relocs_copied **) vpp;
1013 for (p = *head; p != NULL; p = p->next)
1014 if (p->section == sreloc)
1019 p = ((struct elf_m68k_pcrel_relocs_copied *)
1020 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
1025 p->section = sreloc;
1035 /* This relocation describes the C++ object vtable hierarchy.
1036 Reconstruct it for later use during GC. */
1037 case R_68K_GNU_VTINHERIT:
1038 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1042 /* This relocation describes which C++ vtable entries are actually
1043 used. Record for later use during GC. */
1044 case R_68K_GNU_VTENTRY:
1045 BFD_ASSERT (h != NULL);
1047 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1059 /* Return the section that should be marked against GC for a given
1063 elf_m68k_gc_mark_hook (asection *sec,
1064 struct bfd_link_info *info,
1065 Elf_Internal_Rela *rel,
1066 struct elf_link_hash_entry *h,
1067 Elf_Internal_Sym *sym)
1070 switch (ELF32_R_TYPE (rel->r_info))
1072 case R_68K_GNU_VTINHERIT:
1073 case R_68K_GNU_VTENTRY:
1077 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1080 /* Update the got entry reference counts for the section being removed. */
1083 elf_m68k_gc_sweep_hook (bfd *abfd,
1084 struct bfd_link_info *info,
1086 const Elf_Internal_Rela *relocs)
1088 Elf_Internal_Shdr *symtab_hdr;
1089 struct elf_link_hash_entry **sym_hashes;
1090 bfd_signed_vma *local_got_refcounts;
1091 const Elf_Internal_Rela *rel, *relend;
1096 dynobj = elf_hash_table (info)->dynobj;
1100 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1101 sym_hashes = elf_sym_hashes (abfd);
1102 local_got_refcounts = elf_local_got_refcounts (abfd);
1104 sgot = bfd_get_section_by_name (dynobj, ".got");
1105 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1107 relend = relocs + sec->reloc_count;
1108 for (rel = relocs; rel < relend; rel++)
1110 unsigned long r_symndx;
1111 struct elf_link_hash_entry *h = NULL;
1113 r_symndx = ELF32_R_SYM (rel->r_info);
1114 if (r_symndx >= symtab_hdr->sh_info)
1116 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1117 while (h->root.type == bfd_link_hash_indirect
1118 || h->root.type == bfd_link_hash_warning)
1119 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1122 switch (ELF32_R_TYPE (rel->r_info))
1132 if (h->got.refcount > 0)
1135 if (h->got.refcount == 0)
1137 /* We don't need the .got entry any more. */
1139 srelgot->size -= sizeof (Elf32_External_Rela);
1143 else if (local_got_refcounts != NULL)
1145 if (local_got_refcounts[r_symndx] > 0)
1147 --local_got_refcounts[r_symndx];
1148 if (local_got_refcounts[r_symndx] == 0)
1150 /* We don't need the .got entry any more. */
1153 srelgot->size -= sizeof (Elf32_External_Rela);
1173 if (h->plt.refcount > 0)
1186 /* Return the type of PLT associated with OUTPUT_BFD. */
1188 static const struct elf_m68k_plt_info *
1189 elf_m68k_get_plt_info (bfd *output_bfd)
1191 unsigned int features;
1193 features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd));
1194 if (features & cpu32)
1195 return &elf_cpu32_plt_info;
1196 if (features & mcfisa_b)
1197 return &elf_isab_plt_info;
1198 if (features & mcfisa_c)
1199 return &elf_isac_plt_info;
1200 return &elf_m68k_plt_info;
1203 /* This function is called after all the input files have been read,
1204 and the input sections have been assigned to output sections.
1205 It's a convenient place to determine the PLT style. */
1208 elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
1210 elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd);
1214 /* Adjust a symbol defined by a dynamic object and referenced by a
1215 regular object. The current definition is in some section of the
1216 dynamic object, but we're not including those sections. We have to
1217 change the definition to something the rest of the link can
1221 elf_m68k_adjust_dynamic_symbol (info, h)
1222 struct bfd_link_info *info;
1223 struct elf_link_hash_entry *h;
1225 struct elf_m68k_link_hash_table *htab;
1229 htab = elf_m68k_hash_table (info);
1230 dynobj = elf_hash_table (info)->dynobj;
1232 /* Make sure we know what is going on here. */
1233 BFD_ASSERT (dynobj != NULL
1235 || h->u.weakdef != NULL
1238 && !h->def_regular)));
1240 /* If this is a function, put it in the procedure linkage table. We
1241 will fill in the contents of the procedure linkage table later,
1242 when we know the address of the .got section. */
1243 if (h->type == STT_FUNC
1246 if ((h->plt.refcount <= 0
1247 || SYMBOL_CALLS_LOCAL (info, h)
1248 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1249 && h->root.type == bfd_link_hash_undefweak))
1250 /* We must always create the plt entry if it was referenced
1251 by a PLTxxO relocation. In this case we already recorded
1252 it as a dynamic symbol. */
1253 && h->dynindx == -1)
1255 /* This case can occur if we saw a PLTxx reloc in an input
1256 file, but the symbol was never referred to by a dynamic
1257 object, or if all references were garbage collected. In
1258 such a case, we don't actually need to build a procedure
1259 linkage table, and we can just do a PCxx reloc instead. */
1260 h->plt.offset = (bfd_vma) -1;
1265 /* Make sure this symbol is output as a dynamic symbol. */
1266 if (h->dynindx == -1
1267 && !h->forced_local)
1269 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1273 s = bfd_get_section_by_name (dynobj, ".plt");
1274 BFD_ASSERT (s != NULL);
1276 /* If this is the first .plt entry, make room for the special
1279 s->size = htab->plt_info->size;
1281 /* If this symbol is not defined in a regular file, and we are
1282 not generating a shared library, then set the symbol to this
1283 location in the .plt. This is required to make function
1284 pointers compare as equal between the normal executable and
1285 the shared library. */
1289 h->root.u.def.section = s;
1290 h->root.u.def.value = s->size;
1293 h->plt.offset = s->size;
1295 /* Make room for this entry. */
1296 s->size += htab->plt_info->size;
1298 /* We also need to make an entry in the .got.plt section, which
1299 will be placed in the .got section by the linker script. */
1300 s = bfd_get_section_by_name (dynobj, ".got.plt");
1301 BFD_ASSERT (s != NULL);
1304 /* We also need to make an entry in the .rela.plt section. */
1305 s = bfd_get_section_by_name (dynobj, ".rela.plt");
1306 BFD_ASSERT (s != NULL);
1307 s->size += sizeof (Elf32_External_Rela);
1312 /* Reinitialize the plt offset now that it is not used as a reference
1314 h->plt.offset = (bfd_vma) -1;
1316 /* If this is a weak symbol, and there is a real definition, the
1317 processor independent code will have arranged for us to see the
1318 real definition first, and we can just use the same value. */
1319 if (h->u.weakdef != NULL)
1321 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1322 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1323 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1324 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1328 /* This is a reference to a symbol defined by a dynamic object which
1329 is not a function. */
1331 /* If we are creating a shared library, we must presume that the
1332 only references to the symbol are via the global offset table.
1333 For such cases we need not do anything here; the relocations will
1334 be handled correctly by relocate_section. */
1340 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1341 h->root.root.string);
1345 /* We must allocate the symbol in our .dynbss section, which will
1346 become part of the .bss section of the executable. There will be
1347 an entry for this symbol in the .dynsym section. The dynamic
1348 object will contain position independent code, so all references
1349 from the dynamic object to this symbol will go through the global
1350 offset table. The dynamic linker will use the .dynsym entry to
1351 determine the address it must put in the global offset table, so
1352 both the dynamic object and the regular object will refer to the
1353 same memory location for the variable. */
1355 s = bfd_get_section_by_name (dynobj, ".dynbss");
1356 BFD_ASSERT (s != NULL);
1358 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
1359 copy the initial value out of the dynamic object and into the
1360 runtime process image. We need to remember the offset into the
1361 .rela.bss section we are going to use. */
1362 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1366 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
1367 BFD_ASSERT (srel != NULL);
1368 srel->size += sizeof (Elf32_External_Rela);
1372 return _bfd_elf_adjust_dynamic_copy (h, s);
1375 /* Set the sizes of the dynamic sections. */
1378 elf_m68k_size_dynamic_sections (output_bfd, info)
1379 bfd *output_bfd ATTRIBUTE_UNUSED;
1380 struct bfd_link_info *info;
1387 dynobj = elf_hash_table (info)->dynobj;
1388 BFD_ASSERT (dynobj != NULL);
1390 if (elf_hash_table (info)->dynamic_sections_created)
1392 /* Set the contents of the .interp section to the interpreter. */
1393 if (info->executable)
1395 s = bfd_get_section_by_name (dynobj, ".interp");
1396 BFD_ASSERT (s != NULL);
1397 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1398 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1403 /* We may have created entries in the .rela.got section.
1404 However, if we are not creating the dynamic sections, we will
1405 not actually use these entries. Reset the size of .rela.got,
1406 which will cause it to get stripped from the output file
1408 s = bfd_get_section_by_name (dynobj, ".rela.got");
1413 /* If this is a -Bsymbolic shared link, then we need to discard all
1414 PC relative relocs against symbols defined in a regular object.
1415 For the normal shared case we discard the PC relative relocs
1416 against symbols that have become local due to visibility changes.
1417 We allocated space for them in the check_relocs routine, but we
1418 will not fill them in in the relocate_section routine. */
1420 elf_link_hash_traverse (elf_hash_table (info),
1421 elf_m68k_discard_copies,
1424 /* The check_relocs and adjust_dynamic_symbol entry points have
1425 determined the sizes of the various dynamic sections. Allocate
1429 for (s = dynobj->sections; s != NULL; s = s->next)
1433 if ((s->flags & SEC_LINKER_CREATED) == 0)
1436 /* It's OK to base decisions on the section name, because none
1437 of the dynobj section names depend upon the input files. */
1438 name = bfd_get_section_name (dynobj, s);
1440 if (strcmp (name, ".plt") == 0)
1442 /* Remember whether there is a PLT. */
1445 else if (CONST_STRNEQ (name, ".rela"))
1451 /* We use the reloc_count field as a counter if we need
1452 to copy relocs into the output file. */
1456 else if (! CONST_STRNEQ (name, ".got")
1457 && strcmp (name, ".dynbss") != 0)
1459 /* It's not one of our sections, so don't allocate space. */
1465 /* If we don't need this section, strip it from the
1466 output file. This is mostly to handle .rela.bss and
1467 .rela.plt. We must create both sections in
1468 create_dynamic_sections, because they must be created
1469 before the linker maps input sections to output
1470 sections. The linker does that before
1471 adjust_dynamic_symbol is called, and it is that
1472 function which decides whether anything needs to go
1473 into these sections. */
1474 s->flags |= SEC_EXCLUDE;
1478 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1481 /* Allocate memory for the section contents. */
1482 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
1483 Unused entries should be reclaimed before the section's contents
1484 are written out, but at the moment this does not happen. Thus in
1485 order to prevent writing out garbage, we initialise the section's
1486 contents to zero. */
1487 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
1488 if (s->contents == NULL)
1492 if (elf_hash_table (info)->dynamic_sections_created)
1494 /* Add some entries to the .dynamic section. We fill in the
1495 values later, in elf_m68k_finish_dynamic_sections, but we
1496 must add the entries now so that we get the correct size for
1497 the .dynamic section. The DT_DEBUG entry is filled in by the
1498 dynamic linker and used by the debugger. */
1499 #define add_dynamic_entry(TAG, VAL) \
1500 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
1504 if (!add_dynamic_entry (DT_DEBUG, 0))
1510 if (!add_dynamic_entry (DT_PLTGOT, 0)
1511 || !add_dynamic_entry (DT_PLTRELSZ, 0)
1512 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
1513 || !add_dynamic_entry (DT_JMPREL, 0))
1519 if (!add_dynamic_entry (DT_RELA, 0)
1520 || !add_dynamic_entry (DT_RELASZ, 0)
1521 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
1525 if ((info->flags & DF_TEXTREL) != 0)
1527 if (!add_dynamic_entry (DT_TEXTREL, 0))
1531 #undef add_dynamic_entry
1536 /* This function is called via elf_link_hash_traverse if we are
1537 creating a shared object. In the -Bsymbolic case it discards the
1538 space allocated to copy PC relative relocs against symbols which
1539 are defined in regular objects. For the normal shared case, it
1540 discards space for pc-relative relocs that have become local due to
1541 symbol visibility changes. We allocated space for them in the
1542 check_relocs routine, but we won't fill them in in the
1543 relocate_section routine.
1545 We also check whether any of the remaining relocations apply
1546 against a readonly section, and set the DF_TEXTREL flag in this
1550 elf_m68k_discard_copies (h, inf)
1551 struct elf_link_hash_entry *h;
1554 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1555 struct elf_m68k_pcrel_relocs_copied *s;
1557 if (h->root.type == bfd_link_hash_warning)
1558 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1562 && !h->forced_local))
1564 if ((info->flags & DF_TEXTREL) == 0)
1566 /* Look for relocations against read-only sections. */
1567 for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
1570 if ((s->section->flags & SEC_READONLY) != 0)
1572 info->flags |= DF_TEXTREL;
1580 for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
1583 s->section->size -= s->count * sizeof (Elf32_External_Rela);
1588 /* Relocate an M68K ELF section. */
1591 elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section,
1592 contents, relocs, local_syms, local_sections)
1594 struct bfd_link_info *info;
1596 asection *input_section;
1598 Elf_Internal_Rela *relocs;
1599 Elf_Internal_Sym *local_syms;
1600 asection **local_sections;
1603 Elf_Internal_Shdr *symtab_hdr;
1604 struct elf_link_hash_entry **sym_hashes;
1605 bfd_vma *local_got_offsets;
1609 Elf_Internal_Rela *rel;
1610 Elf_Internal_Rela *relend;
1612 dynobj = elf_hash_table (info)->dynobj;
1613 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1614 sym_hashes = elf_sym_hashes (input_bfd);
1615 local_got_offsets = elf_local_got_offsets (input_bfd);
1622 relend = relocs + input_section->reloc_count;
1623 for (; rel < relend; rel++)
1626 reloc_howto_type *howto;
1627 unsigned long r_symndx;
1628 struct elf_link_hash_entry *h;
1629 Elf_Internal_Sym *sym;
1632 bfd_boolean unresolved_reloc;
1633 bfd_reloc_status_type r;
1635 r_type = ELF32_R_TYPE (rel->r_info);
1636 if (r_type < 0 || r_type >= (int) R_68K_max)
1638 bfd_set_error (bfd_error_bad_value);
1641 howto = howto_table + r_type;
1643 r_symndx = ELF32_R_SYM (rel->r_info);
1648 unresolved_reloc = FALSE;
1650 if (r_symndx < symtab_hdr->sh_info)
1652 sym = local_syms + r_symndx;
1653 sec = local_sections[r_symndx];
1654 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1660 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1661 r_symndx, symtab_hdr, sym_hashes,
1663 unresolved_reloc, warned);
1666 if (sec != NULL && elf_discarded_section (sec))
1668 /* For relocs against symbols from removed linkonce sections,
1669 or sections discarded by a linker script, we just want the
1670 section contents zeroed. Avoid any special processing. */
1671 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1677 if (info->relocatable)
1685 /* Relocation is to the address of the entry for this symbol
1686 in the global offset table. */
1688 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1694 /* Relocation is the offset of the entry for this symbol in
1695 the global offset table. */
1702 sgot = bfd_get_section_by_name (dynobj, ".got");
1703 BFD_ASSERT (sgot != NULL);
1710 off = h->got.offset;
1711 BFD_ASSERT (off != (bfd_vma) -1);
1713 dyn = elf_hash_table (info)->dynamic_sections_created;
1714 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
1721 /* This is actually a static link, or it is a
1722 -Bsymbolic link and the symbol is defined
1723 locally, or the symbol was forced to be local
1724 because of a version file.. We must initialize
1725 this entry in the global offset table. Since
1726 the offset must always be a multiple of 4, we
1727 use the least significant bit to record whether
1728 we have initialized it already.
1730 When doing a dynamic link, we create a .rela.got
1731 relocation entry to initialize the value. This
1732 is done in the finish_dynamic_symbol routine. */
1737 bfd_put_32 (output_bfd, relocation,
1738 sgot->contents + off);
1743 unresolved_reloc = FALSE;
1747 BFD_ASSERT (local_got_offsets != NULL
1748 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1750 off = local_got_offsets[r_symndx];
1752 /* The offset must always be a multiple of 4. We use
1753 the least significant bit to record whether we have
1754 already generated the necessary reloc. */
1759 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1764 Elf_Internal_Rela outrel;
1767 s = bfd_get_section_by_name (dynobj, ".rela.got");
1768 BFD_ASSERT (s != NULL);
1770 outrel.r_offset = (sgot->output_section->vma
1771 + sgot->output_offset
1773 outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
1774 outrel.r_addend = relocation;
1776 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
1777 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1780 local_got_offsets[r_symndx] |= 1;
1784 relocation = sgot->output_offset + off;
1785 if (r_type == R_68K_GOT8O
1786 || r_type == R_68K_GOT16O
1787 || r_type == R_68K_GOT32O)
1789 /* This relocation does not use the addend. */
1793 relocation += sgot->output_section->vma;
1800 /* Relocation is to the entry for this symbol in the
1801 procedure linkage table. */
1803 /* Resolve a PLTxx reloc against a local symbol directly,
1804 without using the procedure linkage table. */
1808 if (h->plt.offset == (bfd_vma) -1
1809 || !elf_hash_table (info)->dynamic_sections_created)
1811 /* We didn't make a PLT entry for this symbol. This
1812 happens when statically linking PIC code, or when
1813 using -Bsymbolic. */
1819 splt = bfd_get_section_by_name (dynobj, ".plt");
1820 BFD_ASSERT (splt != NULL);
1823 relocation = (splt->output_section->vma
1824 + splt->output_offset
1826 unresolved_reloc = FALSE;
1832 /* Relocation is the offset of the entry for this symbol in
1833 the procedure linkage table. */
1834 BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1);
1838 splt = bfd_get_section_by_name (dynobj, ".plt");
1839 BFD_ASSERT (splt != NULL);
1842 relocation = h->plt.offset;
1843 unresolved_reloc = FALSE;
1845 /* This relocation does not use the addend. */
1855 && h->forced_local))
1863 && (input_section->flags & SEC_ALLOC) != 0
1865 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1866 || h->root.type != bfd_link_hash_undefweak)
1867 && ((r_type != R_68K_PC8
1868 && r_type != R_68K_PC16
1869 && r_type != R_68K_PC32)
1873 || !h->def_regular))))
1875 Elf_Internal_Rela outrel;
1877 bfd_boolean skip, relocate;
1879 /* When generating a shared object, these relocations
1880 are copied into the output file to be resolved at run
1887 _bfd_elf_section_offset (output_bfd, info, input_section,
1889 if (outrel.r_offset == (bfd_vma) -1)
1891 else if (outrel.r_offset == (bfd_vma) -2)
1892 skip = TRUE, relocate = TRUE;
1893 outrel.r_offset += (input_section->output_section->vma
1894 + input_section->output_offset);
1897 memset (&outrel, 0, sizeof outrel);
1900 && (r_type == R_68K_PC8
1901 || r_type == R_68K_PC16
1902 || r_type == R_68K_PC32
1905 || !h->def_regular))
1907 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1908 outrel.r_addend = rel->r_addend;
1912 /* This symbol is local, or marked to become local. */
1913 outrel.r_addend = relocation + rel->r_addend;
1915 if (r_type == R_68K_32)
1918 outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
1924 if (bfd_is_abs_section (sec))
1926 else if (sec == NULL || sec->owner == NULL)
1928 bfd_set_error (bfd_error_bad_value);
1935 /* We are turning this relocation into one
1936 against a section symbol. It would be
1937 proper to subtract the symbol's value,
1938 osec->vma, from the emitted reloc addend,
1939 but ld.so expects buggy relocs. */
1940 osec = sec->output_section;
1941 indx = elf_section_data (osec)->dynindx;
1944 struct elf_link_hash_table *htab;
1945 htab = elf_hash_table (info);
1946 osec = htab->text_index_section;
1947 indx = elf_section_data (osec)->dynindx;
1949 BFD_ASSERT (indx != 0);
1952 outrel.r_info = ELF32_R_INFO (indx, r_type);
1956 sreloc = elf_section_data (input_section)->sreloc;
1960 loc = sreloc->contents;
1961 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1962 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1964 /* This reloc will be computed at runtime, so there's no
1965 need to do anything now, except for R_68K_32
1966 relocations that have been turned into
1974 case R_68K_GNU_VTINHERIT:
1975 case R_68K_GNU_VTENTRY:
1976 /* These are no-ops in the end. */
1983 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
1984 because such sections are not SEC_ALLOC and thus ld.so will
1985 not process them. */
1986 if (unresolved_reloc
1987 && !((input_section->flags & SEC_DEBUGGING) != 0
1990 (*_bfd_error_handler)
1991 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
1994 (long) rel->r_offset,
1996 h->root.root.string);
2000 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2001 contents, rel->r_offset,
2002 relocation, rel->r_addend);
2004 if (r != bfd_reloc_ok)
2009 name = h->root.root.string;
2012 name = bfd_elf_string_from_elf_section (input_bfd,
2013 symtab_hdr->sh_link,
2018 name = bfd_section_name (input_bfd, sec);
2021 if (r == bfd_reloc_overflow)
2023 if (!(info->callbacks->reloc_overflow
2024 (info, (h ? &h->root : NULL), name, howto->name,
2025 (bfd_vma) 0, input_bfd, input_section,
2031 (*_bfd_error_handler)
2032 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
2033 input_bfd, input_section,
2034 (long) rel->r_offset, name, (int) r);
2043 /* Install an M_68K_PC32 relocation against VALUE at offset OFFSET
2044 into section SEC. */
2047 elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value)
2049 /* Make VALUE PC-relative. */
2050 value -= sec->output_section->vma + offset;
2052 /* Apply any in-place addend. */
2053 value += bfd_get_32 (sec->owner, sec->contents + offset);
2055 bfd_put_32 (sec->owner, value, sec->contents + offset);
2058 /* Finish up dynamic symbol handling. We set the contents of various
2059 dynamic sections here. */
2062 elf_m68k_finish_dynamic_symbol (output_bfd, info, h, sym)
2064 struct bfd_link_info *info;
2065 struct elf_link_hash_entry *h;
2066 Elf_Internal_Sym *sym;
2070 dynobj = elf_hash_table (info)->dynobj;
2072 if (h->plt.offset != (bfd_vma) -1)
2074 const struct elf_m68k_plt_info *plt_info;
2080 Elf_Internal_Rela rela;
2083 /* This symbol has an entry in the procedure linkage table. Set
2086 BFD_ASSERT (h->dynindx != -1);
2088 plt_info = elf_m68k_hash_table (info)->plt_info;
2089 splt = bfd_get_section_by_name (dynobj, ".plt");
2090 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2091 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2092 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
2094 /* Get the index in the procedure linkage table which
2095 corresponds to this symbol. This is the index of this symbol
2096 in all the symbols for which we are making plt entries. The
2097 first entry in the procedure linkage table is reserved. */
2098 plt_index = (h->plt.offset / plt_info->size) - 1;
2100 /* Get the offset into the .got table of the entry that
2101 corresponds to this function. Each .got entry is 4 bytes.
2102 The first three are reserved. */
2103 got_offset = (plt_index + 3) * 4;
2105 memcpy (splt->contents + h->plt.offset,
2106 plt_info->symbol_entry,
2109 elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got,
2110 (sgot->output_section->vma
2111 + sgot->output_offset
2114 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
2117 + plt_info->symbol_resolve_entry + 2);
2119 elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt,
2120 splt->output_section->vma);
2122 /* Fill in the entry in the global offset table. */
2123 bfd_put_32 (output_bfd,
2124 (splt->output_section->vma
2125 + splt->output_offset
2127 + plt_info->symbol_resolve_entry),
2128 sgot->contents + got_offset);
2130 /* Fill in the entry in the .rela.plt section. */
2131 rela.r_offset = (sgot->output_section->vma
2132 + sgot->output_offset
2134 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT);
2136 loc = srela->contents + plt_index * sizeof (Elf32_External_Rela);
2137 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2139 if (!h->def_regular)
2141 /* Mark the symbol as undefined, rather than as defined in
2142 the .plt section. Leave the value alone. */
2143 sym->st_shndx = SHN_UNDEF;
2147 if (h->got.offset != (bfd_vma) -1)
2151 Elf_Internal_Rela rela;
2154 /* This symbol has an entry in the global offset table. Set it
2157 sgot = bfd_get_section_by_name (dynobj, ".got");
2158 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2159 BFD_ASSERT (sgot != NULL && srela != NULL);
2161 rela.r_offset = (sgot->output_section->vma
2162 + sgot->output_offset
2163 + (h->got.offset &~ (bfd_vma) 1));
2165 /* If this is a -Bsymbolic link, and the symbol is defined
2166 locally, we just want to emit a RELATIVE reloc. Likewise if
2167 the symbol was forced to be local because of a version file.
2168 The entry in the global offset table will already have been
2169 initialized in the relocate_section function. */
2176 rela.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
2177 rela.r_addend = bfd_get_signed_32 (output_bfd,
2179 + (h->got.offset &~ (bfd_vma) 1)));
2183 bfd_put_32 (output_bfd, (bfd_vma) 0,
2184 sgot->contents + (h->got.offset &~ (bfd_vma) 1));
2185 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT);
2189 loc = srela->contents;
2190 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2191 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2197 Elf_Internal_Rela rela;
2200 /* This symbol needs a copy reloc. Set it up. */
2202 BFD_ASSERT (h->dynindx != -1
2203 && (h->root.type == bfd_link_hash_defined
2204 || h->root.type == bfd_link_hash_defweak));
2206 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2208 BFD_ASSERT (s != NULL);
2210 rela.r_offset = (h->root.u.def.value
2211 + h->root.u.def.section->output_section->vma
2212 + h->root.u.def.section->output_offset);
2213 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY);
2215 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2216 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2219 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2220 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2221 || h == elf_hash_table (info)->hgot)
2222 sym->st_shndx = SHN_ABS;
2227 /* Finish up the dynamic sections. */
2230 elf_m68k_finish_dynamic_sections (output_bfd, info)
2232 struct bfd_link_info *info;
2238 dynobj = elf_hash_table (info)->dynobj;
2240 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2241 BFD_ASSERT (sgot != NULL);
2242 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2244 if (elf_hash_table (info)->dynamic_sections_created)
2247 Elf32_External_Dyn *dyncon, *dynconend;
2249 splt = bfd_get_section_by_name (dynobj, ".plt");
2250 BFD_ASSERT (splt != NULL && sdyn != NULL);
2252 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2253 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2254 for (; dyncon < dynconend; dyncon++)
2256 Elf_Internal_Dyn dyn;
2260 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2273 s = bfd_get_section_by_name (output_bfd, name);
2274 BFD_ASSERT (s != NULL);
2275 dyn.d_un.d_ptr = s->vma;
2276 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2280 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2281 BFD_ASSERT (s != NULL);
2282 dyn.d_un.d_val = s->size;
2283 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2287 /* The procedure linkage table relocs (DT_JMPREL) should
2288 not be included in the overall relocs (DT_RELA).
2289 Therefore, we override the DT_RELASZ entry here to
2290 make it not include the JMPREL relocs. Since the
2291 linker script arranges for .rela.plt to follow all
2292 other relocation sections, we don't have to worry
2293 about changing the DT_RELA entry. */
2294 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2296 dyn.d_un.d_val -= s->size;
2297 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2302 /* Fill in the first entry in the procedure linkage table. */
2305 const struct elf_m68k_plt_info *plt_info;
2307 plt_info = elf_m68k_hash_table (info)->plt_info;
2308 memcpy (splt->contents, plt_info->plt0_entry, plt_info->size);
2310 elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4,
2311 (sgot->output_section->vma
2312 + sgot->output_offset
2315 elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8,
2316 (sgot->output_section->vma
2317 + sgot->output_offset
2320 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2325 /* Fill in the first three entries in the global offset table. */
2329 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2331 bfd_put_32 (output_bfd,
2332 sdyn->output_section->vma + sdyn->output_offset,
2334 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2335 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2338 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2343 /* Given a .data section and a .emreloc in-memory section, store
2344 relocation information into the .emreloc section which can be
2345 used at runtime to relocate the section. This is called by the
2346 linker when the --embedded-relocs switch is used. This is called
2347 after the add_symbols entry point has been called for all the
2348 objects, and before the final_link entry point is called. */
2351 bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
2353 struct bfd_link_info *info;
2358 Elf_Internal_Shdr *symtab_hdr;
2359 Elf_Internal_Sym *isymbuf = NULL;
2360 Elf_Internal_Rela *internal_relocs = NULL;
2361 Elf_Internal_Rela *irel, *irelend;
2365 BFD_ASSERT (! info->relocatable);
2369 if (datasec->reloc_count == 0)
2372 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2374 /* Get a copy of the native relocations. */
2375 internal_relocs = (_bfd_elf_link_read_relocs
2376 (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
2377 info->keep_memory));
2378 if (internal_relocs == NULL)
2381 amt = (bfd_size_type) datasec->reloc_count * 12;
2382 relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
2383 if (relsec->contents == NULL)
2386 p = relsec->contents;
2388 irelend = internal_relocs + datasec->reloc_count;
2389 for (irel = internal_relocs; irel < irelend; irel++, p += 12)
2391 asection *targetsec;
2393 /* We are going to write a four byte longword into the runtime
2394 reloc section. The longword will be the address in the data
2395 section which must be relocated. It is followed by the name
2396 of the target section NUL-padded or truncated to 8
2399 /* We can only relocate absolute longword relocs at run time. */
2400 if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32)
2402 *errmsg = _("unsupported reloc type");
2403 bfd_set_error (bfd_error_bad_value);
2407 /* Get the target section referred to by the reloc. */
2408 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2410 /* A local symbol. */
2411 Elf_Internal_Sym *isym;
2413 /* Read this BFD's local symbols if we haven't done so already. */
2414 if (isymbuf == NULL)
2416 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2417 if (isymbuf == NULL)
2418 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2419 symtab_hdr->sh_info, 0,
2421 if (isymbuf == NULL)
2425 isym = isymbuf + ELF32_R_SYM (irel->r_info);
2426 targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2431 struct elf_link_hash_entry *h;
2433 /* An external symbol. */
2434 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2435 h = elf_sym_hashes (abfd)[indx];
2436 BFD_ASSERT (h != NULL);
2437 if (h->root.type == bfd_link_hash_defined
2438 || h->root.type == bfd_link_hash_defweak)
2439 targetsec = h->root.u.def.section;
2444 bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
2445 memset (p + 4, 0, 8);
2446 if (targetsec != NULL)
2447 strncpy ((char *) p + 4, targetsec->output_section->name, 8);
2450 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
2452 if (internal_relocs != NULL
2453 && elf_section_data (datasec)->relocs != internal_relocs)
2454 free (internal_relocs);
2458 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
2460 if (internal_relocs != NULL
2461 && elf_section_data (datasec)->relocs != internal_relocs)
2462 free (internal_relocs);
2466 static enum elf_reloc_type_class
2467 elf32_m68k_reloc_type_class (rela)
2468 const Elf_Internal_Rela *rela;
2470 switch ((int) ELF32_R_TYPE (rela->r_info))
2472 case R_68K_RELATIVE:
2473 return reloc_class_relative;
2474 case R_68K_JMP_SLOT:
2475 return reloc_class_plt;
2477 return reloc_class_copy;
2479 return reloc_class_normal;
2483 /* Return address for Ith PLT stub in section PLT, for relocation REL
2484 or (bfd_vma) -1 if it should not be included. */
2487 elf_m68k_plt_sym_val (bfd_vma i, const asection *plt,
2488 const arelent *rel ATTRIBUTE_UNUSED)
2490 return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size;
2493 #define TARGET_BIG_SYM bfd_elf32_m68k_vec
2494 #define TARGET_BIG_NAME "elf32-m68k"
2495 #define ELF_MACHINE_CODE EM_68K
2496 #define ELF_MAXPAGESIZE 0x2000
2497 #define elf_backend_create_dynamic_sections \
2498 _bfd_elf_create_dynamic_sections
2499 #define bfd_elf32_bfd_link_hash_table_create \
2500 elf_m68k_link_hash_table_create
2501 #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link
2503 #define elf_backend_check_relocs elf_m68k_check_relocs
2504 #define elf_backend_always_size_sections \
2505 elf_m68k_always_size_sections
2506 #define elf_backend_adjust_dynamic_symbol \
2507 elf_m68k_adjust_dynamic_symbol
2508 #define elf_backend_size_dynamic_sections \
2509 elf_m68k_size_dynamic_sections
2510 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
2511 #define elf_backend_relocate_section elf_m68k_relocate_section
2512 #define elf_backend_finish_dynamic_symbol \
2513 elf_m68k_finish_dynamic_symbol
2514 #define elf_backend_finish_dynamic_sections \
2515 elf_m68k_finish_dynamic_sections
2516 #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook
2517 #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook
2518 #define bfd_elf32_bfd_merge_private_bfd_data \
2519 elf32_m68k_merge_private_bfd_data
2520 #define bfd_elf32_bfd_set_private_flags \
2521 elf32_m68k_set_private_flags
2522 #define bfd_elf32_bfd_print_private_bfd_data \
2523 elf32_m68k_print_private_bfd_data
2524 #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class
2525 #define elf_backend_plt_sym_val elf_m68k_plt_sym_val
2526 #define elf_backend_object_p elf32_m68k_object_p
2528 #define elf_backend_can_gc_sections 1
2529 #define elf_backend_can_refcount 1
2530 #define elf_backend_want_got_plt 1
2531 #define elf_backend_plt_readonly 1
2532 #define elf_backend_want_plt_sym 0
2533 #define elf_backend_got_header_size 12
2534 #define elf_backend_rela_normal 1
2536 #include "elf32-target.h"