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, 2008 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 /* Forward declaration. */
389 struct elf_m68k_got_entry;
391 /* m68k ELF linker hash entry. */
393 struct elf_m68k_link_hash_entry
395 struct elf_link_hash_entry root;
397 /* Number of PC relative relocs copied for this symbol. */
398 struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied;
400 /* Key to got_entries. */
401 unsigned long got_entry_key;
403 /* List of GOT entries for this symbol. This list is build during
404 offset finalization and is used within elf_m68k_finish_dynamic_symbol
405 to traverse all GOT entries for a particular symbol.
407 ??? We could've used root.got.glist field instead, but having
408 a separate field is cleaner. */
409 struct elf_m68k_got_entry *glist;
412 #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent))
414 /* Key part of GOT entry in hashtable. */
415 struct elf_m68k_got_entry_key
417 /* BFD in which this symbol was defined. NULL for global symbols. */
420 /* Symbol index. Either local symbol index or h->got_entry_key. */
421 unsigned long symndx;
424 /* Entry of the GOT. */
425 struct elf_m68k_got_entry
427 /* GOT entries are put into a got->entries hashtable. This is the key. */
428 struct elf_m68k_got_entry_key key_;
430 /* GOT entry data. We need s1 before offset finalization and s2 after. */
435 /* Number of times this entry is referenced. It is used to
436 filter out unnecessary GOT slots in elf_m68k_gc_sweep_hook. */
439 /* Type is one of R_68K_GOT8O, R_68K_GOT16O or R_68K_GOT32O. */
445 /* Offset from the start of .got section. To calculate offset relative
446 to GOT pointer one should substract got->offset from this value. */
449 /* Pointer to the next GOT entry for this global symbol.
450 Symbols have at most one entry in one GOT, but might
451 have entries in more than one GOT.
452 Root of this list is h->glist.
453 NULL for local symbols. */
454 struct elf_m68k_got_entry *next;
459 /* Data structure representing a single GOT. */
462 /* Hashtable of 'struct elf_m68k_got_entry's.
463 Starting size of this table is the maximum number of
464 R_68K_GOT8O entries. */
467 /* Number of R_68K_GOT8O entries in this GOT.
468 This is used to detect the overflow of number of such entries. */
469 bfd_vma rel_8o_n_entries;
471 /* Cumulative count of R_68K_GOT8O and R_68K_GOT16O entries in this GOT.
472 This is used to detect the overflow of number of such entries. */
473 bfd_vma rel_8o_16o_n_entries;
475 /* Number of local (entry->key_.h == NULL) entries in this GOT.
476 This is only used to properly calculate size of .rela.got section;
477 see elf_m68k_partition_multi_got. */
478 bfd_vma local_n_entries;
480 /* Offset of this GOT relative to beginning of .got section. */
484 /* BFD and its GOT. This is an entry in multi_got->bfd2got hashtable. */
485 struct elf_m68k_bfd2got_entry
490 /* Assigned GOT. Before partitioning multi-GOT each BFD has its own
491 GOT structure. After partitioning several BFD's might [and often do]
492 share a single GOT. */
493 struct elf_m68k_got *got;
496 /* The main data structure holding all the pieces. */
497 struct elf_m68k_multi_got
499 /* Hashtable mapping each BFD to its GOT. If a BFD doesn't have an entry
500 here, then it doesn't need a GOT (this includes the case of a BFD
501 having an empty GOT).
503 ??? This hashtable can be replaced by an array indexed by bfd->id. */
506 /* Next symndx to assign a global symbol.
507 h->got_entry_key is initialized from this counter. */
508 unsigned long global_symndx;
511 /* m68k ELF linker hash table. */
513 struct elf_m68k_link_hash_table
515 struct elf_link_hash_table root;
517 /* Small local sym to section mapping cache. */
518 struct sym_sec_cache sym_sec;
520 /* The PLT format used by this link, or NULL if the format has not
522 const struct elf_m68k_plt_info *plt_info;
524 /* True, if GP is loaded within each function which uses it.
525 Set to TRUE when GOT negative offsets or multi-GOT is enabled. */
526 bfd_boolean local_gp_p;
528 /* Switch controlling use of negative offsets to double the size of GOTs. */
529 bfd_boolean use_neg_got_offsets_p;
531 /* Switch controlling generation of multiple GOTs. */
532 bfd_boolean allow_multigot_p;
534 /* Multi-GOT data structure. */
535 struct elf_m68k_multi_got multi_got_;
538 /* Get the m68k ELF linker hash table from a link_info structure. */
540 #define elf_m68k_hash_table(p) \
541 ((struct elf_m68k_link_hash_table *) (p)->hash)
543 /* Shortcut to multi-GOT data. */
544 #define elf_m68k_multi_got(INFO) (&elf_m68k_hash_table (INFO)->multi_got_)
546 /* Create an entry in an m68k ELF linker hash table. */
548 static struct bfd_hash_entry *
549 elf_m68k_link_hash_newfunc (entry, table, string)
550 struct bfd_hash_entry *entry;
551 struct bfd_hash_table *table;
554 struct bfd_hash_entry *ret = entry;
556 /* Allocate the structure if it has not already been allocated by a
559 ret = bfd_hash_allocate (table,
560 sizeof (struct elf_m68k_link_hash_entry));
564 /* Call the allocation method of the superclass. */
565 ret = _bfd_elf_link_hash_newfunc (ret, table, string);
568 elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL;
569 elf_m68k_hash_entry (ret)->got_entry_key = 0;
570 elf_m68k_hash_entry (ret)->glist = NULL;
576 /* Create an m68k ELF linker hash table. */
578 static struct bfd_link_hash_table *
579 elf_m68k_link_hash_table_create (abfd)
582 struct elf_m68k_link_hash_table *ret;
583 bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table);
585 ret = (struct elf_m68k_link_hash_table *) bfd_malloc (amt);
586 if (ret == (struct elf_m68k_link_hash_table *) NULL)
589 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
590 elf_m68k_link_hash_newfunc,
591 sizeof (struct elf_m68k_link_hash_entry)))
597 ret->sym_sec.abfd = NULL;
598 ret->plt_info = NULL;
599 ret->local_gp_p = FALSE;
600 ret->use_neg_got_offsets_p = FALSE;
601 ret->allow_multigot_p = FALSE;
602 ret->multi_got_.bfd2got = NULL;
603 ret->multi_got_.global_symndx = 1;
605 return &ret->root.root;
608 /* Destruct local data. */
611 elf_m68k_link_hash_table_free (struct bfd_link_hash_table *_htab)
613 struct elf_m68k_link_hash_table *htab;
615 htab = (struct elf_m68k_link_hash_table *) _htab;
617 if (htab->multi_got_.bfd2got != NULL)
619 htab_delete (htab->multi_got_.bfd2got);
620 htab->multi_got_.bfd2got = NULL;
624 /* Set the right machine number. */
627 elf32_m68k_object_p (bfd *abfd)
629 unsigned int mach = 0;
630 unsigned features = 0;
631 flagword eflags = elf_elfheader (abfd)->e_flags;
633 if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
635 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
637 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
641 switch (eflags & EF_M68K_CF_ISA_MASK)
643 case EF_M68K_CF_ISA_A_NODIV:
644 features |= mcfisa_a;
646 case EF_M68K_CF_ISA_A:
647 features |= mcfisa_a|mcfhwdiv;
649 case EF_M68K_CF_ISA_A_PLUS:
650 features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp;
652 case EF_M68K_CF_ISA_B_NOUSP:
653 features |= mcfisa_a|mcfisa_b|mcfhwdiv;
655 case EF_M68K_CF_ISA_B:
656 features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp;
658 case EF_M68K_CF_ISA_C:
659 features |= mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp;
661 case EF_M68K_CF_ISA_C_NODIV:
662 features |= mcfisa_a|mcfisa_c|mcfusp;
665 switch (eflags & EF_M68K_CF_MAC_MASK)
670 case EF_M68K_CF_EMAC:
674 if (eflags & EF_M68K_CF_FLOAT)
678 mach = bfd_m68k_features_to_mach (features);
679 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach);
684 /* Keep m68k-specific flags in the ELF header. */
686 elf32_m68k_set_private_flags (abfd, flags)
690 elf_elfheader (abfd)->e_flags = flags;
691 elf_flags_init (abfd) = TRUE;
695 /* Merge backend specific data from an object file to the output
696 object file when linking. */
698 elf32_m68k_merge_private_bfd_data (ibfd, obfd)
706 const bfd_arch_info_type *arch_info;
708 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
709 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
712 /* Get the merged machine. This checks for incompatibility between
713 Coldfire & non-Coldfire flags, incompability between different
714 Coldfire ISAs, and incompability between different MAC types. */
715 arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE);
719 bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach);
721 in_flags = elf_elfheader (ibfd)->e_flags;
722 if (!elf_flags_init (obfd))
724 elf_flags_init (obfd) = TRUE;
725 out_flags = in_flags;
729 out_flags = elf_elfheader (obfd)->e_flags;
730 unsigned int variant_mask;
732 if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
734 else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
736 else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
739 variant_mask = EF_M68K_CF_ISA_MASK;
741 in_isa = (in_flags & variant_mask);
742 out_isa = (out_flags & variant_mask);
743 if (in_isa > out_isa)
744 out_flags ^= in_isa ^ out_isa;
745 if (((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32
746 && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
747 || ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO
748 && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32))
749 out_flags = EF_M68K_FIDO;
751 out_flags |= in_flags ^ in_isa;
753 elf_elfheader (obfd)->e_flags = out_flags;
758 /* Display the flags field. */
761 elf32_m68k_print_private_bfd_data (bfd *abfd, void * ptr)
763 FILE *file = (FILE *) ptr;
764 flagword eflags = elf_elfheader (abfd)->e_flags;
766 BFD_ASSERT (abfd != NULL && ptr != NULL);
768 /* Print normal ELF private data. */
769 _bfd_elf_print_private_bfd_data (abfd, ptr);
771 /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
773 /* xgettext:c-format */
774 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
776 if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
777 fprintf (file, " [m68000]");
778 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
779 fprintf (file, " [cpu32]");
780 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
781 fprintf (file, " [fido]");
784 if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CFV4E)
785 fprintf (file, " [cfv4e]");
787 if (eflags & EF_M68K_CF_ISA_MASK)
789 char const *isa = _("unknown");
790 char const *mac = _("unknown");
791 char const *additional = "";
793 switch (eflags & EF_M68K_CF_ISA_MASK)
795 case EF_M68K_CF_ISA_A_NODIV:
797 additional = " [nodiv]";
799 case EF_M68K_CF_ISA_A:
802 case EF_M68K_CF_ISA_A_PLUS:
805 case EF_M68K_CF_ISA_B_NOUSP:
807 additional = " [nousp]";
809 case EF_M68K_CF_ISA_B:
812 case EF_M68K_CF_ISA_C:
815 case EF_M68K_CF_ISA_C_NODIV:
817 additional = " [nodiv]";
820 fprintf (file, " [isa %s]%s", isa, additional);
822 if (eflags & EF_M68K_CF_FLOAT)
823 fprintf (file, " [float]");
825 switch (eflags & EF_M68K_CF_MAC_MASK)
833 case EF_M68K_CF_EMAC:
838 fprintf (file, " [%s]", mac);
847 /* Multi-GOT support implementation design:
849 Multi-GOT starts in check_relocs hook. There we scan all
850 relocations of a BFD and build a local GOT (struct elf_m68k_got)
851 for it. If a single BFD appears to require too many GOT slots with
852 R_68K_GOT8O or R_68K_GOT16O relocations, we fail with notification
854 After check_relocs has been invoked for each input BFD, we have
855 constructed a GOT for each input BFD.
857 To minimize total number of GOTs required for a particular output BFD
858 (as some environments support only 1 GOT per output object) we try
859 to merge some of the GOTs to share an offset space. Ideally [and in most
860 cases] we end up with a single GOT. In cases when there are too many
861 restricted relocations (e.g., R_68K_GOT16O relocations) we end up with
862 several GOTs, assuming the environment can handle them.
864 Partitioning is done in elf_m68k_partition_multi_got. We start with
865 an empty GOT and traverse bfd2got hashtable putting got_entries from
866 local GOTs to the new 'big' one. We do that by constructing an
867 intermediate GOT holding all the entries the local GOT has and the big
868 GOT lacks. Then we check if there is room in the big GOT to accomodate
869 all the entries from diff. On success we add those entries to the big
870 GOT; on failure we start the new 'big' GOT and retry the adding of
871 entries from the local GOT. Note that this retry will always succeed as
872 each local GOT doesn't overflow the limits. After partitioning we
873 end up with each bfd assigned one of the big GOTs. GOT entries in the
874 big GOTs are initialized with GOT offsets. Note that big GOTs are
875 positioned consequently in program space and represent a single huge GOT
876 to the outside world.
878 After that we get to elf_m68k_relocate_section. There we
879 adjust relocations of GOT pointer (_GLOBAL_OFFSET_TABLE_) and symbol
880 relocations to refer to appropriate [assigned to current input_bfd]
885 GOT entry type: We have 3 types of GOT entries.
886 * R_68K_GOT8O type is used in entries for symbols that have
887 at least one R_68K_GOT8O relocation. We can have at most 0x40
888 such entries in one GOT.
889 * R_68K_GOT16O type is used in entries for symbols that have
890 at least one R_68K_GOT16O relocation and no R_68K_GOT8O relocations.
891 We can have at most 0x4000 such entries in one GOT.
892 * R_68K_GOT32O type is used in all other cases. We can have as many
893 such entries in one GOT as we like.
894 When counting relocations we have to include the count of the smaller
895 ranged relocations in the counts of the larger ranged ones in order
896 to correctly detect overflow.
898 Sorting the GOT: In each GOT starting offsets are assigned to
899 R_68K_GOT8O entries, which are followed by R_68K_GOT16O entries, and
900 R_68K_GOT32O entries go at the end. See finalize_got_offsets for details.
902 Negative GOT offsets: To double usable offset range of GOTs we use
903 negative offsets. As we assign entries with GOT offsets relative to
904 start of .got section, the offset values are positive. They become
905 negative only in relocate_section where got->offset value is
906 subtracted from them.
908 3 special GOT entries: There are 3 special GOT entries used internally
909 by loader. These entries happen to be placed to .got.plt section,
910 so we don't do anything about them in multi-GOT support.
912 Memory management: All data except for hashtables
913 multi_got->bfd2got and got->entries are allocated on
914 elf_hash_table (info)->dynobj bfd (for this reason we pass 'info'
915 to most functions), so we don't need to care to free them. At the
916 moment of allocation hashtables are being linked into main data
917 structure (multi_got), all pieces of which are reachable from
918 elf_m68k_multi_got (info). We deallocate them in
919 elf_m68k_link_hash_table_free. */
921 /* Initialize GOT. */
924 elf_m68k_init_got (struct elf_m68k_got *got,
926 bfd_vma rel_8o_n_entries,
927 bfd_vma rel_8o_16o_n_entries,
928 bfd_vma local_n_entries,
931 got->entries = entries;
932 got->rel_8o_n_entries = rel_8o_n_entries;
933 got->rel_8o_16o_n_entries = rel_8o_16o_n_entries;
934 got->local_n_entries = local_n_entries;
935 got->offset = offset;
941 elf_m68k_clear_got (struct elf_m68k_got *got)
943 if (got->entries != NULL)
945 htab_delete (got->entries);
950 /* Create and empty GOT structure. INFO is the context where memory
951 should be allocated. */
953 static struct elf_m68k_got *
954 elf_m68k_create_empty_got (struct bfd_link_info *info)
956 struct elf_m68k_got *got;
958 got = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*got));
962 elf_m68k_init_got (got, NULL, 0, 0, 0, (bfd_vma) -1);
967 /* Initialize KEY. */
970 elf_m68k_init_got_entry_key (struct elf_m68k_got_entry_key *key,
971 struct elf_link_hash_entry *h,
972 const bfd *abfd, unsigned long symndx)
977 key->symndx = elf_m68k_hash_entry (h)->got_entry_key;
978 BFD_ASSERT (key->symndx != 0);
983 key->symndx = symndx;
987 /* Calculate hash of got_entry.
991 elf_m68k_got_entry_hash (const void *_entry)
993 const struct elf_m68k_got_entry_key *key;
995 key = &((const struct elf_m68k_got_entry *) _entry)->key_;
997 return key->symndx + (key->bfd != NULL
1002 /* Check if two got entries are equal. */
1005 elf_m68k_got_entry_eq (const void *_entry1, const void *_entry2)
1007 const struct elf_m68k_got_entry_key *key1;
1008 const struct elf_m68k_got_entry_key *key2;
1010 key1 = &((const struct elf_m68k_got_entry *) _entry1)->key_;
1011 key2 = &((const struct elf_m68k_got_entry *) _entry2)->key_;
1013 return (key1->bfd == key2->bfd
1014 && key1->symndx == key2->symndx);
1017 /* Maximal number of R_68K_GOT8O entries in a single GOT. */
1018 #define ELF_M68K_REL_8O_MAX_N_ENTRIES_IN_GOT(INFO) \
1019 (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \
1023 /* Maximal number of R_68K_GOT8O and R_68K_GOT16O entries in a single GOT. */
1024 #define ELF_M68K_REL_8O_16O_MAX_N_ENTRIES_IN_GOT(INFO) \
1025 (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \
1029 /* SEARCH - simply search the hashtable, don't insert new entries or fail when
1030 the entry cannot be found.
1031 FIND_OR_CREATE - search for an existing entry, but create new if there's
1033 MUST_FIND - search for an existing entry and assert that it exist.
1034 MUST_CREATE - assert that there's no such entry and create new one. */
1035 enum elf_m68k_get_entry_howto
1043 /* Get or create (depending on HOWTO) entry with KEY in GOT.
1044 INFO is context in which memory should be allocated (can be NULL if
1045 HOWTO is SEARCH or MUST_FIND). */
1047 static struct elf_m68k_got_entry *
1048 elf_m68k_get_got_entry (struct elf_m68k_got *got,
1049 const struct elf_m68k_got_entry_key *key,
1050 enum elf_m68k_get_entry_howto howto,
1051 struct bfd_link_info *info)
1053 struct elf_m68k_got_entry entry_;
1054 struct elf_m68k_got_entry *entry;
1057 BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND));
1059 if (got->entries == NULL)
1060 /* This is the first entry in ABFD. Initialize hashtable. */
1062 if (howto == SEARCH)
1065 got->entries = htab_try_create (ELF_M68K_REL_8O_MAX_N_ENTRIES_IN_GOT
1067 elf_m68k_got_entry_hash,
1068 elf_m68k_got_entry_eq, NULL);
1069 if (got->entries == NULL)
1071 bfd_set_error (bfd_error_no_memory);
1077 ptr = htab_find_slot (got->entries, &entry_, (howto != SEARCH
1078 ? INSERT : NO_INSERT));
1081 if (howto == SEARCH)
1082 /* Entry not found. */
1085 /* We're out of memory. */
1086 bfd_set_error (bfd_error_no_memory);
1091 /* We didn't find the entry and we're asked to create a new one. */
1093 BFD_ASSERT (howto != MUST_FIND && howto != SEARCH);
1095 entry = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry));
1099 /* Initialize new entry. */
1102 entry->u.s1.refcount = 0;
1103 entry->u.s1.type = R_68K_GOT32O;
1108 /* We found the entry. */
1110 BFD_ASSERT (howto != MUST_CREATE);
1118 /* Update GOT counters when merging entry of WAS type with entry of NEW type.
1119 Return the value to which ENTRY's type should be set. */
1122 elf_m68k_update_got_entry_type (struct elf_m68k_got *got, int was, int new)
1124 if (new == R_68K_GOT8O && was != R_68K_GOT8O)
1125 /* NEW overrides WAS. */
1127 ++got->rel_8o_n_entries;
1129 if (was != R_68K_GOT16O)
1130 /* Update this counter too. */
1131 ++got->rel_8o_16o_n_entries;
1133 else if (new == R_68K_GOT16O && was != R_68K_GOT8O && was != R_68K_GOT16O)
1134 /* NEW overrides WAS. */
1135 ++got->rel_8o_16o_n_entries;
1137 /* NEW doesn't override WAS. */
1143 /* Update GOT counters when removing an entry of type TYPE. */
1146 elf_m68k_remove_got_entry_type (struct elf_m68k_got *got, int type)
1151 BFD_ASSERT (got->rel_8o_n_entries > 0);
1153 --got->rel_8o_n_entries;
1157 BFD_ASSERT (got->rel_8o_16o_n_entries >= got->rel_8o_n_entries);
1159 --got->rel_8o_16o_n_entries;
1170 /* Add new or update existing entry to GOT.
1171 H, ABFD, TYPE and SYMNDX is data for the entry.
1172 INFO is a context where memory should be allocated. */
1174 static struct elf_m68k_got_entry *
1175 elf_m68k_add_entry_to_got (struct elf_m68k_got *got,
1176 struct elf_link_hash_entry *h,
1178 int type, unsigned long symndx,
1179 struct bfd_link_info *info)
1181 struct elf_m68k_got_entry_key key_;
1182 struct elf_m68k_got_entry *entry;
1184 if (h != NULL && elf_m68k_hash_entry (h)->got_entry_key == 0)
1185 elf_m68k_hash_entry (h)->got_entry_key
1186 = elf_m68k_multi_got (info)->global_symndx++;
1188 elf_m68k_init_got_entry_key (&key_, h, abfd, symndx);
1190 entry = elf_m68k_get_got_entry (got, &key_, FIND_OR_CREATE, info);
1194 /* Update refcount. */
1195 ++entry->u.s1.refcount;
1197 if (entry->u.s1.refcount == 1)
1198 /* We see this entry for the first time. */
1200 if (entry->key_.bfd != NULL)
1201 ++got->local_n_entries;
1204 /* Determine entry's type and update got->rel_*_n_entries counters. */
1205 entry->u.s1.type = elf_m68k_update_got_entry_type (got, entry->u.s1.type,
1208 if ((got->rel_8o_n_entries
1209 > ELF_M68K_REL_8O_MAX_N_ENTRIES_IN_GOT (info))
1210 || (got->rel_8o_16o_n_entries
1211 > ELF_M68K_REL_8O_16O_MAX_N_ENTRIES_IN_GOT (info)))
1212 /* This BFD has too many relocation. */
1214 if (got->rel_8o_n_entries
1215 > ELF_M68K_REL_8O_MAX_N_ENTRIES_IN_GOT (info))
1216 (*_bfd_error_handler) (_("%B: GOT overflow: "
1217 "Number of R_68K_GOT8O relocations > %d"),
1219 ELF_M68K_REL_8O_MAX_N_ENTRIES_IN_GOT (info));
1221 (*_bfd_error_handler) (_("%B: GOT overflow: "
1222 "Number of R_68K_GOT8O and R_68K_GOT16O "
1223 "relocations > %d"),
1225 ELF_M68K_REL_8O_16O_MAX_N_ENTRIES_IN_GOT (info));
1233 /* Compute the hash value of the bfd in a bfd2got hash entry. */
1236 elf_m68k_bfd2got_entry_hash (const void *entry)
1238 const struct elf_m68k_bfd2got_entry *e;
1240 e = (const struct elf_m68k_bfd2got_entry *) entry;
1245 /* Check whether two hash entries have the same bfd. */
1248 elf_m68k_bfd2got_entry_eq (const void *entry1, const void *entry2)
1250 const struct elf_m68k_bfd2got_entry *e1;
1251 const struct elf_m68k_bfd2got_entry *e2;
1253 e1 = (const struct elf_m68k_bfd2got_entry *) entry1;
1254 e2 = (const struct elf_m68k_bfd2got_entry *) entry2;
1256 return e1->bfd == e2->bfd;
1259 /* Destruct a bfd2got entry. */
1262 elf_m68k_bfd2got_entry_del (void *_entry)
1264 struct elf_m68k_bfd2got_entry *entry;
1266 entry = (struct elf_m68k_bfd2got_entry *) _entry;
1268 BFD_ASSERT (entry->got != NULL);
1269 elf_m68k_clear_got (entry->got);
1272 /* Find existing or create new (depending on HOWTO) bfd2got entry in
1273 MULTI_GOT. ABFD is the bfd we need a GOT for. INFO is a context where
1274 memory should be allocated. */
1276 static struct elf_m68k_bfd2got_entry *
1277 elf_m68k_get_bfd2got_entry (struct elf_m68k_multi_got *multi_got,
1279 enum elf_m68k_get_entry_howto howto,
1280 struct bfd_link_info *info)
1282 struct elf_m68k_bfd2got_entry entry_;
1284 struct elf_m68k_bfd2got_entry *entry;
1286 BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND));
1288 if (multi_got->bfd2got == NULL)
1289 /* This is the first GOT. Initialize bfd2got. */
1291 if (howto == SEARCH)
1294 multi_got->bfd2got = htab_try_create (1, elf_m68k_bfd2got_entry_hash,
1295 elf_m68k_bfd2got_entry_eq,
1296 elf_m68k_bfd2got_entry_del);
1297 if (multi_got->bfd2got == NULL)
1299 bfd_set_error (bfd_error_no_memory);
1305 ptr = htab_find_slot (multi_got->bfd2got, &entry_, (howto != SEARCH
1306 ? INSERT : NO_INSERT));
1309 if (howto == SEARCH)
1310 /* Entry not found. */
1313 /* We're out of memory. */
1314 bfd_set_error (bfd_error_no_memory);
1319 /* Entry was not found. Create new one. */
1321 BFD_ASSERT (howto != MUST_FIND && howto != SEARCH);
1323 entry = ((struct elf_m68k_bfd2got_entry *)
1324 bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry)));
1330 entry->got = elf_m68k_create_empty_got (info);
1331 if (entry->got == NULL)
1338 BFD_ASSERT (howto != MUST_CREATE);
1340 /* Return existing entry. */
1347 struct elf_m68k_can_merge_gots_arg
1349 /* A current_got that we constructing a DIFF against. */
1350 struct elf_m68k_got *big;
1352 /* GOT holding entries not present or that should be changed in
1354 struct elf_m68k_got *diff;
1356 /* Context where to allocate memory. */
1357 struct bfd_link_info *info;
1360 bfd_boolean error_p;
1363 /* Process a single entry from the small GOT to see if it should be added
1364 or updated in the big GOT. */
1367 elf_m68k_can_merge_gots_1 (void **_entry_ptr, void *_arg)
1369 const struct elf_m68k_got_entry *entry1;
1370 struct elf_m68k_can_merge_gots_arg *arg;
1371 const struct elf_m68k_got_entry *entry2;
1374 entry1 = (const struct elf_m68k_got_entry *) *_entry_ptr;
1375 arg = (struct elf_m68k_can_merge_gots_arg *) _arg;
1377 entry2 = elf_m68k_get_got_entry (arg->big, &entry1->key_, SEARCH, NULL);
1381 type = elf_m68k_update_got_entry_type (arg->diff, entry2->u.s1.type,
1384 if (type == entry2->u.s1.type)
1385 /* ENTRY1 doesn't update data in ENTRY2. Skip it.
1386 To skip creation of difference entry we use the type,
1387 which we won't see in GOT entries for sure. */
1392 BFD_ASSERT (entry1->u.s1.type != R_68K_32);
1394 type = elf_m68k_update_got_entry_type (arg->diff, R_68K_GOT32O,
1397 /* Update local counter. */
1398 if (entry1->key_.bfd != NULL)
1399 ++arg->diff->local_n_entries;
1402 if (type != R_68K_32)
1403 /* Create an entry in DIFF. */
1405 struct elf_m68k_got_entry *entry;
1407 entry = elf_m68k_get_got_entry (arg->diff, &entry1->key_, MUST_CREATE,
1411 arg->error_p = TRUE;
1415 entry->u.s1.type = type;
1421 /* Return TRUE if SMALL GOT can be added to BIG GOT without overflowing it.
1422 Construct DIFF GOT holding the entries which should be added or updated
1423 in BIG GOT to accumulate information from SMALL.
1424 INFO is the context where memory should be allocated. */
1427 elf_m68k_can_merge_gots (struct elf_m68k_got *big,
1428 const struct elf_m68k_got *small,
1429 struct bfd_link_info *info,
1430 struct elf_m68k_got *diff)
1432 struct elf_m68k_can_merge_gots_arg arg_;
1434 BFD_ASSERT (small->offset == (bfd_vma) -1);
1439 arg_.error_p = FALSE;
1440 htab_traverse_noresize (small->entries, elf_m68k_can_merge_gots_1, &arg_);
1447 /* Check for overflow. */
1448 if ((big->rel_8o_n_entries + arg_.diff->rel_8o_n_entries
1449 > ELF_M68K_REL_8O_MAX_N_ENTRIES_IN_GOT (info))
1450 || (big->rel_8o_16o_n_entries + arg_.diff->rel_8o_16o_n_entries
1451 > ELF_M68K_REL_8O_16O_MAX_N_ENTRIES_IN_GOT (info)))
1457 struct elf_m68k_merge_gots_arg
1460 struct elf_m68k_got *big;
1462 /* Context where memory should be allocated. */
1463 struct bfd_link_info *info;
1466 bfd_boolean error_p;
1469 /* Process a single entry from DIFF got. Add or update corresponding
1470 entry in the BIG got. */
1473 elf_m68k_merge_gots_1 (void **entry_ptr, void *_arg)
1475 const struct elf_m68k_got_entry *from;
1476 struct elf_m68k_merge_gots_arg *arg;
1477 struct elf_m68k_got_entry *to;
1479 from = (const struct elf_m68k_got_entry *) *entry_ptr;
1480 arg = (struct elf_m68k_merge_gots_arg *) _arg;
1482 to = elf_m68k_get_got_entry (arg->big, &from->key_, FIND_OR_CREATE,
1486 arg->error_p = TRUE;
1490 BFD_ASSERT (to->u.s1.refcount == 0);
1491 /* All we need to merge is TYPE. */
1492 to->u.s1.type = from->u.s1.type;
1497 /* Merge data from DIFF to BIG. INFO is context where memory should be
1501 elf_m68k_merge_gots (struct elf_m68k_got *big,
1502 struct elf_m68k_got *diff,
1503 struct bfd_link_info *info)
1505 if (diff->entries != NULL)
1506 /* DIFF is not empty. Merge it into BIG GOT. */
1508 struct elf_m68k_merge_gots_arg arg_;
1510 /* Merge entries. */
1513 arg_.error_p = FALSE;
1514 htab_traverse_noresize (diff->entries, elf_m68k_merge_gots_1, &arg_);
1518 /* Merge counters. */
1519 big->rel_8o_n_entries += diff->rel_8o_n_entries;
1520 big->rel_8o_16o_n_entries += diff->rel_8o_16o_n_entries;
1521 big->local_n_entries += diff->local_n_entries;
1524 /* DIFF is empty. */
1526 BFD_ASSERT (diff->rel_8o_n_entries == 0);
1527 BFD_ASSERT (diff->rel_8o_16o_n_entries == 0);
1528 BFD_ASSERT (diff->local_n_entries == 0);
1531 BFD_ASSERT (!elf_m68k_hash_table (info)->allow_multigot_p
1532 || ((big->rel_8o_n_entries
1533 <= ELF_M68K_REL_8O_MAX_N_ENTRIES_IN_GOT (info))
1534 && (big->rel_8o_16o_n_entries
1535 <= ELF_M68K_REL_8O_16O_MAX_N_ENTRIES_IN_GOT (info))));
1540 struct elf_m68k_finalize_got_offsets_arg
1542 /* Offset for the next R_68K_GOT8O entry. */
1543 bfd_vma rel_8o_offset;
1545 /* Offset for the next R_68K_GOT16O entry. */
1546 bfd_vma rel_16o_offset;
1548 /* Offset for the next R_68K_GOT32O entry. */
1549 bfd_vma rel_32o_offset;
1551 /* Should we use negative (relative to GP) offsets for GOT entries. */
1552 bfd_boolean use_neg_got_offsets_p;
1554 /* Offset of this GOT relative to .got section. */
1557 /* Mapping from global symndx to global symbols.
1558 This is used to build lists of got entries for global symbols. */
1559 struct elf_m68k_link_hash_entry **symndx2h;
1562 /* Assign ENTRY an offset. Build list of GOT entries for global symbols
1566 elf_m68k_finalize_got_offsets_1 (void **entry_ptr, void *_arg)
1568 struct elf_m68k_got_entry *entry;
1569 struct elf_m68k_finalize_got_offsets_arg *arg;
1571 entry = (struct elf_m68k_got_entry *) *entry_ptr;
1572 arg = (struct elf_m68k_finalize_got_offsets_arg *) _arg;
1574 /* This should be a fresh entry created in elf_m68k_can_merge_gots. */
1575 BFD_ASSERT (entry->u.s1.refcount == 0);
1577 switch (entry->u.s1.type)
1580 entry->u.s2.offset = arg->rel_8o_offset;
1582 if (arg->use_neg_got_offsets_p)
1584 if (arg->rel_8o_offset >= arg->got_offset)
1585 /* We've assigned a positive offset to this entry,
1586 next entry should get (-abs(offset) - 4). */
1587 arg->rel_8o_offset = (arg->got_offset
1588 - (arg->rel_8o_offset - arg->got_offset)
1591 /* We've assigned a negative offset to this entry,
1592 next entry should get (+abs(offset) + 0). */
1593 arg->rel_8o_offset = (arg->got_offset
1594 + (arg->got_offset - arg->rel_8o_offset));
1597 /* Next entry will simply get next offset. */
1598 arg->rel_8o_offset += 4;
1603 entry->u.s2.offset = arg->rel_16o_offset;
1605 if (arg->use_neg_got_offsets_p)
1607 if (arg->rel_16o_offset >= arg->got_offset)
1608 /* We've assigned a positive offset to this entry,
1609 next entry should get (-abs(offset) - 4). */
1610 arg->rel_16o_offset = (arg->got_offset
1611 - (arg->rel_16o_offset - arg->got_offset)
1614 /* We've assigned a negative offset to this entry,
1615 next entry should get (+abs(offset) + 0). */
1616 arg->rel_16o_offset = (arg->got_offset
1617 + (arg->got_offset - arg->rel_16o_offset));
1620 /* Next entry will simply get next offset. */
1621 arg->rel_16o_offset += 4;
1626 entry->u.s2.offset = arg->rel_32o_offset;
1628 if (arg->use_neg_got_offsets_p)
1630 if (arg->rel_32o_offset >= arg->got_offset)
1631 /* We've assigned a positive offset to this entry,
1632 next entry should get (-abs(offset) - 4). */
1633 arg->rel_32o_offset = (arg->got_offset
1634 - (arg->rel_32o_offset - arg->got_offset)
1637 /* We've assigned a negative offset to this entry,
1638 next entry should get (+abs(offset) + 0). */
1639 arg->rel_32o_offset = (arg->got_offset
1640 + (arg->got_offset - arg->rel_32o_offset));
1643 /* Next entry will simply get next offset. */
1644 arg->rel_32o_offset += 4;
1653 if (entry->key_.bfd == NULL)
1654 /* Hook up this entry into the list of got_entries of H. */
1656 struct elf_m68k_link_hash_entry *h;
1658 BFD_ASSERT (entry->key_.symndx != 0);
1659 h = arg->symndx2h[entry->key_.symndx];
1660 BFD_ASSERT (h != NULL);
1662 entry->u.s2.next = h->glist;
1666 /* This entry is for local symbol. */
1667 entry->u.s2.next = NULL;
1672 /* Assign offsets within GOT. USE_NEG_GOT_OFFSETS_P indicates if we
1673 should use negative offsets.
1674 Build list of GOT entries for global symbols along the way.
1675 SYMNDX2H is mapping from global symbol indices to actual
1679 elf_m68k_finalize_got_offsets (struct elf_m68k_got *got,
1680 bfd_boolean use_neg_got_offsets_p,
1681 struct elf_m68k_link_hash_entry **symndx2h)
1683 struct elf_m68k_finalize_got_offsets_arg arg_;
1685 BFD_ASSERT (got->offset != (bfd_vma) -1);
1687 /* We set entry offsets relative to the .got section (and not the
1688 start of a particular GOT), so that we can use them in
1689 finish_dynamic_symbol without needing to know the GOT they come
1692 if (use_neg_got_offsets_p)
1696 /* Put GOT pointer in the middle of GOT. */
1697 n = htab_elements (got->entries);
1699 /* Even number of GOT entries. */
1700 got->offset += 2 * n;
1702 /* Odd number of GOT entries. */
1703 got->offset += 2 * (n - 1);
1705 /* R_68K_GOT8O entries shall start at GOT offset. */
1706 arg_.rel_8o_offset = got->offset;
1708 n = got->rel_8o_n_entries;
1710 /* Even number of R_68K_GOT8O entries.
1711 The last R_68K_GOT8O entry will be at
1712 (got->offset - 2 * n). Hence the first R_68K_GOT16O
1713 entry will be at offset ... */
1714 arg_.rel_16o_offset = got->offset + 2 * n;
1716 /* Odd number of R_68K_GOT8O entries.
1717 The last R_68K_GOT8O entry will be at
1718 (got->offset + 2 * (n - 1)). Hence the first R_68K_GOT16O
1719 entry will be at offset ... */
1720 arg_.rel_16o_offset = got->offset - 2 * (n - 1) - 4;
1722 n = got->rel_8o_16o_n_entries;
1724 /* Even number of R_68K_GOT8O and R_68K_GOT16O entries.
1725 The last R_68K_GOT8O entry will be at
1726 (got->offset - 2 * n). Hence the first R_68K_GOT32O
1727 entry will be at offset ... */
1728 arg_.rel_32o_offset = got->offset + 2 * n;
1730 /* Odd number of R_68K_GOT8O and R_68K_GOT16O entries.
1731 The last R_68K_GOT16O entry will be at
1732 (got->offset + 2 * (n - 1)). Hence the first R_68K_GOT32O
1733 entry will be at offset ... */
1734 arg_.rel_32o_offset = got->offset - 2 * (n - 1) - 4;
1736 arg_.use_neg_got_offsets_p = TRUE;
1738 arg_.got_offset = got->offset;
1742 arg_.rel_8o_offset = got->offset;
1743 arg_.rel_16o_offset = 4 * got->rel_8o_n_entries + got->offset;
1744 arg_.rel_32o_offset = 4 * got->rel_8o_16o_n_entries + got->offset;
1746 arg_.use_neg_got_offsets_p = FALSE;
1748 /* This shouldn't be used. */
1749 arg_.got_offset = (bfd_vma) -1;
1752 arg_.symndx2h = symndx2h;
1754 htab_traverse (got->entries, elf_m68k_finalize_got_offsets_1, &arg_);
1756 /* Calculate offset ranges we have actually assigned. */
1757 if (use_neg_got_offsets_p)
1759 if (arg_.rel_8o_offset == (bfd_vma) -4
1760 || arg_.rel_8o_offset < got->offset)
1761 arg_.rel_8o_offset = 2 * (got->offset - arg_.rel_8o_offset) - 4;
1763 arg_.rel_8o_offset = 2 * (arg_.rel_8o_offset - got->offset);
1765 if (arg_.rel_16o_offset == (bfd_vma) -4
1766 || arg_.rel_16o_offset < got->offset)
1767 arg_.rel_16o_offset = 2 * (got->offset - arg_.rel_16o_offset) - 4;
1769 arg_.rel_16o_offset = 2 * (arg_.rel_16o_offset - got->offset);
1771 if (arg_.rel_32o_offset == (bfd_vma) -4
1772 || arg_.rel_32o_offset < got->offset)
1773 arg_.rel_32o_offset = 2 * (got->offset - arg_.rel_32o_offset) - 4;
1775 arg_.rel_32o_offset = 2 * (arg_.rel_32o_offset - got->offset);
1779 arg_.rel_8o_offset -= got->offset;
1780 arg_.rel_16o_offset -= got->offset;
1781 arg_.rel_32o_offset -= got->offset;
1784 /* These asserts check that we got counting of entries right. */
1785 BFD_ASSERT (arg_.rel_8o_offset == 4 * got->rel_8o_n_entries);
1786 BFD_ASSERT (arg_.rel_16o_offset == 4 * got->rel_8o_16o_n_entries);
1787 BFD_ASSERT (arg_.rel_32o_offset == 4 * htab_elements (got->entries));
1790 struct elf_m68k_partition_multi_got_arg
1792 /* The GOT we are adding entries to. Aka big got. */
1793 struct elf_m68k_got *current_got;
1795 /* Offset to assign the next CURRENT_GOT. */
1798 /* Context where memory should be allocated. */
1799 struct bfd_link_info *info;
1801 /* Total number of entries in the .got section.
1802 This is used to calculate size of the .got and .rela.got sections. */
1805 /* Total number of local entries in the .got section.
1806 This is used to calculate size of the .rela.got section. */
1807 bfd_vma local_n_entries;
1810 bfd_boolean error_p;
1812 /* Mapping from global symndx to global symbols.
1813 This is used to build lists of got entries for global symbols. */
1814 struct elf_m68k_link_hash_entry **symndx2h;
1817 /* Process a single BFD2GOT entry and either merge GOT to CURRENT_GOT
1818 or start a new CURRENT_GOT. */
1821 elf_m68k_partition_multi_got_1 (void **_entry, void *_arg)
1823 struct elf_m68k_bfd2got_entry *entry;
1824 struct elf_m68k_partition_multi_got_arg *arg;
1825 struct elf_m68k_got *got;
1826 struct elf_m68k_got *current_got;
1827 struct elf_m68k_got diff_;
1828 struct elf_m68k_got *diff;
1830 entry = (struct elf_m68k_bfd2got_entry *) *_entry;
1831 arg = (struct elf_m68k_partition_multi_got_arg *) _arg;
1834 BFD_ASSERT (got != NULL);
1835 BFD_ASSERT (got->offset == (bfd_vma) -1);
1839 if (arg->current_got != NULL)
1840 /* Construct diff. */
1843 elf_m68k_init_got (diff, NULL, 0, 0, 0, (bfd_vma) -1);
1845 if (!elf_m68k_can_merge_gots (arg->current_got, got, arg->info, diff))
1847 if (diff->offset == 0)
1848 /* Offset set to 0 in the diff_ indicates an error. */
1850 arg->error_p = TRUE;
1854 if (elf_m68k_hash_table (arg->info)->allow_multigot_p)
1856 elf_m68k_clear_got (diff);
1857 /* Schedule to finish up CURRENT_GOT and start new one. */
1861 Merge GOTs no matter what. If big GOT overflows,
1862 we'll fail in relocate_section due to truncated relocations.
1864 ??? May be fail earlier? E.g., in can_merge_gots. */
1868 /* Diff of got against empty current_got is got itself. */
1870 /* Create empty CURRENT_GOT to subsequent GOTs to. */
1871 arg->current_got = elf_m68k_create_empty_got (arg->info);
1872 if (arg->current_got == NULL)
1874 arg->error_p = TRUE;
1878 arg->current_got->offset = arg->offset;
1883 current_got = arg->current_got;
1887 if (!elf_m68k_merge_gots (current_got, diff, arg->info))
1889 arg->error_p = TRUE;
1893 /* Now we can free GOT. */
1894 elf_m68k_clear_got (got);
1896 entry->got = current_got;
1900 /* Schedule to start a new current_got. */
1901 arg->current_got = NULL;
1902 arg->offset = (current_got->offset
1903 + 4 * htab_elements (current_got->entries));
1905 /* Finish up current_got. */
1907 elf_m68k_finalize_got_offsets (current_got,
1908 elf_m68k_hash_table (arg->info)
1909 ->use_neg_got_offsets_p,
1912 arg->n_entries += htab_elements (current_got->entries);
1913 arg->local_n_entries += current_got->local_n_entries;
1915 BFD_ASSERT (arg->local_n_entries <= arg->n_entries);
1919 if (!elf_m68k_partition_multi_got_1 (_entry, _arg))
1921 BFD_ASSERT (arg->error_p);
1928 elf_m68k_clear_got (diff);
1930 return arg->error_p == FALSE ? 1 : 0;
1933 /* Helper function to build symndx2h mapping. */
1936 elf_m68k_init_symndx2h_1 (struct elf_link_hash_entry *_h,
1939 struct elf_m68k_link_hash_entry *h;
1941 h = elf_m68k_hash_entry (_h);
1943 if (h->got_entry_key != 0)
1944 /* H has at least one entry in the GOT. */
1946 struct elf_m68k_partition_multi_got_arg *arg;
1948 arg = (struct elf_m68k_partition_multi_got_arg *) _arg;
1950 BFD_ASSERT (arg->symndx2h[h->got_entry_key] == NULL);
1951 arg->symndx2h[h->got_entry_key] = h;
1957 /* Merge GOTs of some BFDs, assign offsets to GOT entries and build
1958 lists of GOT entries for global symbols.
1959 Calculate sizes of .got and .rela.got sections. */
1962 elf_m68k_partition_multi_got (struct bfd_link_info *info)
1964 struct elf_m68k_multi_got *multi_got;
1965 struct elf_m68k_partition_multi_got_arg arg_;
1967 multi_got = elf_m68k_multi_got (info);
1969 arg_.current_got = NULL;
1973 arg_.local_n_entries = 0;
1974 arg_.error_p = FALSE;
1976 if (multi_got->bfd2got != NULL)
1978 /* Initialize symndx2h mapping. */
1980 arg_.symndx2h = bfd_zmalloc (multi_got->global_symndx
1981 * sizeof (*arg_.symndx2h));
1982 if (arg_.symndx2h == NULL)
1985 elf_link_hash_traverse (elf_hash_table (info),
1986 elf_m68k_init_symndx2h_1, &arg_);
1990 htab_traverse (multi_got->bfd2got, elf_m68k_partition_multi_got_1,
1994 free (arg_.symndx2h);
1995 arg_.symndx2h = NULL;
2000 /* Finish up last current_got. */
2002 elf_m68k_finalize_got_offsets (arg_.current_got,
2003 elf_m68k_hash_table (info)
2004 ->use_neg_got_offsets_p, arg_.symndx2h);
2006 arg_.n_entries += htab_elements (arg_.current_got->entries);
2007 arg_.local_n_entries += arg_.current_got->local_n_entries;
2009 BFD_ASSERT (arg_.local_n_entries <= arg_.n_entries);
2012 free (arg_.symndx2h);
2015 if (elf_hash_table (info)->dynobj != NULL)
2016 /* Set sizes of .got and .rela.got sections. */
2020 s = bfd_get_section_by_name (elf_hash_table (info)->dynobj, ".got");
2022 s->size = arg_.n_entries * 4;
2024 BFD_ASSERT (arg_.n_entries == 0);
2026 /* If we are generating a shared object, we need to
2027 output a R_68K_RELATIVE reloc so that the dynamic
2028 linker can adjust this GOT entry. Overwise we
2029 don't need space in .rela.got for local symbols. */
2032 BFD_ASSERT (arg_.local_n_entries <= arg_.n_entries);
2033 arg_.n_entries -= arg_.local_n_entries;
2036 s = bfd_get_section_by_name (elf_hash_table (info)->dynobj, ".rela.got");
2038 s->size = arg_.n_entries * sizeof (Elf32_External_Rela);
2040 BFD_ASSERT (arg_.n_entries == 0);
2043 BFD_ASSERT (multi_got->bfd2got == NULL);
2048 /* Specialized version of elf_m68k_get_got_entry that returns pointer
2049 to hashtable slot, thus allowing removal of entry via
2050 elf_m68k_remove_got_entry. */
2052 static struct elf_m68k_got_entry **
2053 elf_m68k_find_got_entry_ptr (struct elf_m68k_got *got,
2054 struct elf_m68k_got_entry_key *key)
2057 struct elf_m68k_got_entry entry_;
2058 struct elf_m68k_got_entry **entry_ptr;
2061 ptr = htab_find_slot (got->entries, &entry_, NO_INSERT);
2062 BFD_ASSERT (ptr != NULL);
2064 entry_ptr = (struct elf_m68k_got_entry **) ptr;
2069 /* Remove entry pointed to by ENTRY_PTR from GOT. */
2072 elf_m68k_remove_got_entry (struct elf_m68k_got *got,
2073 struct elf_m68k_got_entry **entry_ptr)
2075 struct elf_m68k_got_entry *entry;
2079 /* Check that offsets have not been finalized yet. */
2080 BFD_ASSERT (got->offset == (bfd_vma) -1);
2081 /* Check that this entry is indeed unused. */
2082 BFD_ASSERT (entry->u.s1.refcount == 0);
2084 elf_m68k_remove_got_entry_type (got, entry->u.s1.type);
2086 if (entry->key_.bfd != NULL)
2087 --got->local_n_entries;
2089 htab_clear_slot (got->entries, (void **) entry_ptr);
2092 /* Copy any information related to dynamic linking from a pre-existing
2093 symbol to a newly created symbol. Also called to copy flags and
2094 other back-end info to a weakdef, in which case the symbol is not
2095 newly created and plt/got refcounts and dynamic indices should not
2099 elf_m68k_copy_indirect_symbol (struct bfd_link_info *info,
2100 struct elf_link_hash_entry *_dir,
2101 struct elf_link_hash_entry *_ind)
2103 struct elf_m68k_link_hash_entry *dir;
2104 struct elf_m68k_link_hash_entry *ind;
2106 _bfd_elf_link_hash_copy_indirect (info, _dir, _ind);
2108 if (_ind->root.type != bfd_link_hash_indirect)
2111 dir = elf_m68k_hash_entry (_dir);
2112 ind = elf_m68k_hash_entry (_ind);
2114 /* We might have a direct symbol already having entries in the GOTs.
2115 Update its key only in case indirect symbol has GOT entries and
2116 assert that both indirect and direct symbols don't have GOT entries
2117 at the same time. */
2118 if (ind->got_entry_key != 0)
2120 BFD_ASSERT (dir->got_entry_key == 0);
2121 /* Assert that GOTs aren't partioned yet. */
2122 BFD_ASSERT (ind->glist == NULL);
2124 dir->got_entry_key = ind->got_entry_key;
2125 ind->got_entry_key = 0;
2129 /* Look through the relocs for a section during the first phase, and
2130 allocate space in the global offset table or procedure linkage
2134 elf_m68k_check_relocs (abfd, info, sec, relocs)
2136 struct bfd_link_info *info;
2138 const Elf_Internal_Rela *relocs;
2141 Elf_Internal_Shdr *symtab_hdr;
2142 struct elf_link_hash_entry **sym_hashes;
2143 const Elf_Internal_Rela *rel;
2144 const Elf_Internal_Rela *rel_end;
2148 struct elf_m68k_got *got;
2150 if (info->relocatable)
2153 dynobj = elf_hash_table (info)->dynobj;
2154 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2155 sym_hashes = elf_sym_hashes (abfd);
2163 rel_end = relocs + sec->reloc_count;
2164 for (rel = relocs; rel < rel_end; rel++)
2166 unsigned long r_symndx;
2167 struct elf_link_hash_entry *h;
2169 r_symndx = ELF32_R_SYM (rel->r_info);
2171 if (r_symndx < symtab_hdr->sh_info)
2175 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2176 while (h->root.type == bfd_link_hash_indirect
2177 || h->root.type == bfd_link_hash_warning)
2178 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2181 switch (ELF32_R_TYPE (rel->r_info))
2187 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2193 /* This symbol requires a global offset table entry. */
2197 /* Create the .got section. */
2198 elf_hash_table (info)->dynobj = dynobj = abfd;
2199 if (!_bfd_elf_create_got_section (dynobj, info))
2205 sgot = bfd_get_section_by_name (dynobj, ".got");
2206 BFD_ASSERT (sgot != NULL);
2210 && (h != NULL || info->shared))
2212 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2213 if (srelgot == NULL)
2215 srelgot = bfd_make_section_with_flags (dynobj,
2221 | SEC_LINKER_CREATED
2224 || !bfd_set_section_alignment (dynobj, srelgot, 2))
2231 struct elf_m68k_bfd2got_entry *bfd2got_entry;
2234 = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
2235 abfd, FIND_OR_CREATE, info);
2236 if (bfd2got_entry == NULL)
2239 got = bfd2got_entry->got;
2240 BFD_ASSERT (got != NULL);
2244 struct elf_m68k_got_entry *got_entry;
2246 /* Add entry to got. */
2247 got_entry = elf_m68k_add_entry_to_got (got, h, abfd,
2248 ELF32_R_TYPE (rel->r_info),
2250 if (got_entry == NULL)
2253 if (got_entry->u.s1.refcount == 1)
2255 /* Make sure this symbol is output as a dynamic symbol. */
2258 && !h->forced_local)
2260 if (!bfd_elf_link_record_dynamic_symbol (info, h))
2264 /* Allocate space in the .got section. */
2267 /* Allocate relocation space. */
2270 srelgot->size += sizeof (Elf32_External_Rela);
2279 /* This symbol requires a procedure linkage table entry. We
2280 actually build the entry in adjust_dynamic_symbol,
2281 because this might be a case of linking PIC code which is
2282 never referenced by a dynamic object, in which case we
2283 don't need to generate a procedure linkage table entry
2286 /* If this is a local symbol, we resolve it directly without
2287 creating a procedure linkage table entry. */
2298 /* This symbol requires a procedure linkage table entry. */
2302 /* It does not make sense to have this relocation for a
2303 local symbol. FIXME: does it? How to handle it if
2304 it does make sense? */
2305 bfd_set_error (bfd_error_bad_value);
2309 /* Make sure this symbol is output as a dynamic symbol. */
2310 if (h->dynindx == -1
2311 && !h->forced_local)
2313 if (!bfd_elf_link_record_dynamic_symbol (info, h))
2324 /* If we are creating a shared library and this is not a local
2325 symbol, we need to copy the reloc into the shared library.
2326 However when linking with -Bsymbolic and this is a global
2327 symbol which is defined in an object we are including in the
2328 link (i.e., DEF_REGULAR is set), then we can resolve the
2329 reloc directly. At this point we have not seen all the input
2330 files, so it is possible that DEF_REGULAR is not set now but
2331 will be set later (it is never cleared). We account for that
2332 possibility below by storing information in the
2333 pcrel_relocs_copied field of the hash table entry. */
2335 && (sec->flags & SEC_ALLOC) != 0
2338 || h->root.type == bfd_link_hash_defweak
2339 || !h->def_regular)))
2343 /* Make sure a plt entry is created for this symbol if
2344 it turns out to be a function defined by a dynamic
2356 /* Make sure a plt entry is created for this symbol if it
2357 turns out to be a function defined by a dynamic object. */
2361 /* If we are creating a shared library, we need to copy the
2362 reloc into the shared library. */
2364 && (sec->flags & SEC_ALLOC) != 0)
2366 /* When creating a shared object, we must copy these
2367 reloc types into the output file. We create a reloc
2368 section in dynobj and make room for this reloc. */
2373 name = (bfd_elf_string_from_elf_section
2375 elf_elfheader (abfd)->e_shstrndx,
2376 elf_section_data (sec)->rel_hdr.sh_name));
2380 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
2381 && strcmp (bfd_get_section_name (abfd, sec),
2384 sreloc = bfd_get_section_by_name (dynobj, name);
2387 sreloc = bfd_make_section_with_flags (dynobj,
2393 | SEC_LINKER_CREATED
2396 || !bfd_set_section_alignment (dynobj, sreloc, 2))
2399 elf_section_data (sec)->sreloc = sreloc;
2402 if (sec->flags & SEC_READONLY
2403 /* Don't set DF_TEXTREL yet for PC relative
2404 relocations, they might be discarded later. */
2405 && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8
2406 || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
2407 || ELF32_R_TYPE (rel->r_info) == R_68K_PC32))
2408 info->flags |= DF_TEXTREL;
2410 sreloc->size += sizeof (Elf32_External_Rela);
2412 /* We count the number of PC relative relocations we have
2413 entered for this symbol, so that we can discard them
2414 again if, in the -Bsymbolic case, the symbol is later
2415 defined by a regular object, or, in the normal shared
2416 case, the symbol is forced to be local. Note that this
2417 function is only called if we are using an m68kelf linker
2418 hash table, which means that h is really a pointer to an
2419 elf_m68k_link_hash_entry. */
2420 if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8
2421 || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
2422 || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)
2424 struct elf_m68k_pcrel_relocs_copied *p;
2425 struct elf_m68k_pcrel_relocs_copied **head;
2429 struct elf_m68k_link_hash_entry *eh
2430 = elf_m68k_hash_entry (h);
2431 head = &eh->pcrel_relocs_copied;
2438 s = (bfd_section_from_r_symndx
2439 (abfd, &elf_m68k_hash_table (info)->sym_sec,
2444 vpp = &elf_section_data (s)->local_dynrel;
2445 head = (struct elf_m68k_pcrel_relocs_copied **) vpp;
2448 for (p = *head; p != NULL; p = p->next)
2449 if (p->section == sreloc)
2454 p = ((struct elf_m68k_pcrel_relocs_copied *)
2455 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
2460 p->section = sreloc;
2470 /* This relocation describes the C++ object vtable hierarchy.
2471 Reconstruct it for later use during GC. */
2472 case R_68K_GNU_VTINHERIT:
2473 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2477 /* This relocation describes which C++ vtable entries are actually
2478 used. Record for later use during GC. */
2479 case R_68K_GNU_VTENTRY:
2480 BFD_ASSERT (h != NULL);
2482 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2494 /* Return the section that should be marked against GC for a given
2498 elf_m68k_gc_mark_hook (asection *sec,
2499 struct bfd_link_info *info,
2500 Elf_Internal_Rela *rel,
2501 struct elf_link_hash_entry *h,
2502 Elf_Internal_Sym *sym)
2505 switch (ELF32_R_TYPE (rel->r_info))
2507 case R_68K_GNU_VTINHERIT:
2508 case R_68K_GNU_VTENTRY:
2512 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2515 /* Update the got entry reference counts for the section being removed. */
2518 elf_m68k_gc_sweep_hook (bfd *abfd,
2519 struct bfd_link_info *info,
2521 const Elf_Internal_Rela *relocs)
2523 Elf_Internal_Shdr *symtab_hdr;
2524 struct elf_link_hash_entry **sym_hashes;
2525 const Elf_Internal_Rela *rel, *relend;
2529 struct elf_m68k_got *got;
2531 if (info->relocatable)
2534 dynobj = elf_hash_table (info)->dynobj;
2538 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2539 sym_hashes = elf_sym_hashes (abfd);
2541 sgot = bfd_get_section_by_name (dynobj, ".got");
2542 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2545 relend = relocs + sec->reloc_count;
2546 for (rel = relocs; rel < relend; rel++)
2548 unsigned long r_symndx;
2549 struct elf_link_hash_entry *h = NULL;
2551 r_symndx = ELF32_R_SYM (rel->r_info);
2552 if (r_symndx >= symtab_hdr->sh_info)
2554 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2555 while (h->root.type == bfd_link_hash_indirect
2556 || h->root.type == bfd_link_hash_warning)
2557 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2560 switch (ELF32_R_TYPE (rel->r_info))
2566 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2575 got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
2576 abfd, MUST_FIND, NULL)->got;
2577 BFD_ASSERT (got != NULL);
2581 struct elf_m68k_got_entry_key key_;
2582 struct elf_m68k_got_entry **got_entry_ptr;
2583 struct elf_m68k_got_entry *got_entry;
2585 elf_m68k_init_got_entry_key (&key_, h, abfd, r_symndx);
2586 got_entry_ptr = elf_m68k_find_got_entry_ptr (got, &key_);
2588 got_entry = *got_entry_ptr;
2590 if (got_entry->u.s1.refcount > 0)
2592 --got_entry->u.s1.refcount;
2594 if (got_entry->u.s1.refcount == 0)
2595 /* We don't need the .got entry any more. */
2596 elf_m68k_remove_got_entry (got, got_entry_ptr);
2615 if (h->plt.refcount > 0)
2628 /* Return the type of PLT associated with OUTPUT_BFD. */
2630 static const struct elf_m68k_plt_info *
2631 elf_m68k_get_plt_info (bfd *output_bfd)
2633 unsigned int features;
2635 features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd));
2636 if (features & cpu32)
2637 return &elf_cpu32_plt_info;
2638 if (features & mcfisa_b)
2639 return &elf_isab_plt_info;
2640 if (features & mcfisa_c)
2641 return &elf_isac_plt_info;
2642 return &elf_m68k_plt_info;
2645 /* This function is called after all the input files have been read,
2646 and the input sections have been assigned to output sections.
2647 It's a convenient place to determine the PLT style. */
2650 elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2652 /* Bind input BFDs to GOTs and calculate sizes of .got and .rela.got
2654 if (!elf_m68k_partition_multi_got (info))
2657 elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd);
2661 /* Adjust a symbol defined by a dynamic object and referenced by a
2662 regular object. The current definition is in some section of the
2663 dynamic object, but we're not including those sections. We have to
2664 change the definition to something the rest of the link can
2668 elf_m68k_adjust_dynamic_symbol (info, h)
2669 struct bfd_link_info *info;
2670 struct elf_link_hash_entry *h;
2672 struct elf_m68k_link_hash_table *htab;
2676 htab = elf_m68k_hash_table (info);
2677 dynobj = elf_hash_table (info)->dynobj;
2679 /* Make sure we know what is going on here. */
2680 BFD_ASSERT (dynobj != NULL
2682 || h->u.weakdef != NULL
2685 && !h->def_regular)));
2687 /* If this is a function, put it in the procedure linkage table. We
2688 will fill in the contents of the procedure linkage table later,
2689 when we know the address of the .got section. */
2690 if (h->type == STT_FUNC
2693 if ((h->plt.refcount <= 0
2694 || SYMBOL_CALLS_LOCAL (info, h)
2695 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2696 && h->root.type == bfd_link_hash_undefweak))
2697 /* We must always create the plt entry if it was referenced
2698 by a PLTxxO relocation. In this case we already recorded
2699 it as a dynamic symbol. */
2700 && h->dynindx == -1)
2702 /* This case can occur if we saw a PLTxx reloc in an input
2703 file, but the symbol was never referred to by a dynamic
2704 object, or if all references were garbage collected. In
2705 such a case, we don't actually need to build a procedure
2706 linkage table, and we can just do a PCxx reloc instead. */
2707 h->plt.offset = (bfd_vma) -1;
2712 /* Make sure this symbol is output as a dynamic symbol. */
2713 if (h->dynindx == -1
2714 && !h->forced_local)
2716 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2720 s = bfd_get_section_by_name (dynobj, ".plt");
2721 BFD_ASSERT (s != NULL);
2723 /* If this is the first .plt entry, make room for the special
2726 s->size = htab->plt_info->size;
2728 /* If this symbol is not defined in a regular file, and we are
2729 not generating a shared library, then set the symbol to this
2730 location in the .plt. This is required to make function
2731 pointers compare as equal between the normal executable and
2732 the shared library. */
2736 h->root.u.def.section = s;
2737 h->root.u.def.value = s->size;
2740 h->plt.offset = s->size;
2742 /* Make room for this entry. */
2743 s->size += htab->plt_info->size;
2745 /* We also need to make an entry in the .got.plt section, which
2746 will be placed in the .got section by the linker script. */
2747 s = bfd_get_section_by_name (dynobj, ".got.plt");
2748 BFD_ASSERT (s != NULL);
2751 /* We also need to make an entry in the .rela.plt section. */
2752 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2753 BFD_ASSERT (s != NULL);
2754 s->size += sizeof (Elf32_External_Rela);
2759 /* Reinitialize the plt offset now that it is not used as a reference
2761 h->plt.offset = (bfd_vma) -1;
2763 /* If this is a weak symbol, and there is a real definition, the
2764 processor independent code will have arranged for us to see the
2765 real definition first, and we can just use the same value. */
2766 if (h->u.weakdef != NULL)
2768 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2769 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2770 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2771 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2775 /* This is a reference to a symbol defined by a dynamic object which
2776 is not a function. */
2778 /* If we are creating a shared library, we must presume that the
2779 only references to the symbol are via the global offset table.
2780 For such cases we need not do anything here; the relocations will
2781 be handled correctly by relocate_section. */
2787 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2788 h->root.root.string);
2792 /* We must allocate the symbol in our .dynbss section, which will
2793 become part of the .bss section of the executable. There will be
2794 an entry for this symbol in the .dynsym section. The dynamic
2795 object will contain position independent code, so all references
2796 from the dynamic object to this symbol will go through the global
2797 offset table. The dynamic linker will use the .dynsym entry to
2798 determine the address it must put in the global offset table, so
2799 both the dynamic object and the regular object will refer to the
2800 same memory location for the variable. */
2802 s = bfd_get_section_by_name (dynobj, ".dynbss");
2803 BFD_ASSERT (s != NULL);
2805 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
2806 copy the initial value out of the dynamic object and into the
2807 runtime process image. We need to remember the offset into the
2808 .rela.bss section we are going to use. */
2809 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2813 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
2814 BFD_ASSERT (srel != NULL);
2815 srel->size += sizeof (Elf32_External_Rela);
2819 return _bfd_elf_adjust_dynamic_copy (h, s);
2822 /* Set the sizes of the dynamic sections. */
2825 elf_m68k_size_dynamic_sections (output_bfd, info)
2826 bfd *output_bfd ATTRIBUTE_UNUSED;
2827 struct bfd_link_info *info;
2834 dynobj = elf_hash_table (info)->dynobj;
2835 BFD_ASSERT (dynobj != NULL);
2837 if (elf_hash_table (info)->dynamic_sections_created)
2839 /* Set the contents of the .interp section to the interpreter. */
2840 if (info->executable)
2842 s = bfd_get_section_by_name (dynobj, ".interp");
2843 BFD_ASSERT (s != NULL);
2844 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2845 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2850 /* We may have created entries in the .rela.got section.
2851 However, if we are not creating the dynamic sections, we will
2852 not actually use these entries. Reset the size of .rela.got,
2853 which will cause it to get stripped from the output file
2855 s = bfd_get_section_by_name (dynobj, ".rela.got");
2860 /* If this is a -Bsymbolic shared link, then we need to discard all
2861 PC relative relocs against symbols defined in a regular object.
2862 For the normal shared case we discard the PC relative relocs
2863 against symbols that have become local due to visibility changes.
2864 We allocated space for them in the check_relocs routine, but we
2865 will not fill them in in the relocate_section routine. */
2867 elf_link_hash_traverse (elf_hash_table (info),
2868 elf_m68k_discard_copies,
2871 /* The check_relocs and adjust_dynamic_symbol entry points have
2872 determined the sizes of the various dynamic sections. Allocate
2876 for (s = dynobj->sections; s != NULL; s = s->next)
2880 if ((s->flags & SEC_LINKER_CREATED) == 0)
2883 /* It's OK to base decisions on the section name, because none
2884 of the dynobj section names depend upon the input files. */
2885 name = bfd_get_section_name (dynobj, s);
2887 if (strcmp (name, ".plt") == 0)
2889 /* Remember whether there is a PLT. */
2892 else if (CONST_STRNEQ (name, ".rela"))
2898 /* We use the reloc_count field as a counter if we need
2899 to copy relocs into the output file. */
2903 else if (! CONST_STRNEQ (name, ".got")
2904 && strcmp (name, ".dynbss") != 0)
2906 /* It's not one of our sections, so don't allocate space. */
2912 /* If we don't need this section, strip it from the
2913 output file. This is mostly to handle .rela.bss and
2914 .rela.plt. We must create both sections in
2915 create_dynamic_sections, because they must be created
2916 before the linker maps input sections to output
2917 sections. The linker does that before
2918 adjust_dynamic_symbol is called, and it is that
2919 function which decides whether anything needs to go
2920 into these sections. */
2921 s->flags |= SEC_EXCLUDE;
2925 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2928 /* Allocate memory for the section contents. */
2929 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
2930 Unused entries should be reclaimed before the section's contents
2931 are written out, but at the moment this does not happen. Thus in
2932 order to prevent writing out garbage, we initialise the section's
2933 contents to zero. */
2934 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2935 if (s->contents == NULL)
2939 if (elf_hash_table (info)->dynamic_sections_created)
2941 /* Add some entries to the .dynamic section. We fill in the
2942 values later, in elf_m68k_finish_dynamic_sections, but we
2943 must add the entries now so that we get the correct size for
2944 the .dynamic section. The DT_DEBUG entry is filled in by the
2945 dynamic linker and used by the debugger. */
2946 #define add_dynamic_entry(TAG, VAL) \
2947 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2951 if (!add_dynamic_entry (DT_DEBUG, 0))
2957 if (!add_dynamic_entry (DT_PLTGOT, 0)
2958 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2959 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2960 || !add_dynamic_entry (DT_JMPREL, 0))
2966 if (!add_dynamic_entry (DT_RELA, 0)
2967 || !add_dynamic_entry (DT_RELASZ, 0)
2968 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2972 if ((info->flags & DF_TEXTREL) != 0)
2974 if (!add_dynamic_entry (DT_TEXTREL, 0))
2978 #undef add_dynamic_entry
2983 /* This function is called via elf_link_hash_traverse if we are
2984 creating a shared object. In the -Bsymbolic case it discards the
2985 space allocated to copy PC relative relocs against symbols which
2986 are defined in regular objects. For the normal shared case, it
2987 discards space for pc-relative relocs that have become local due to
2988 symbol visibility changes. We allocated space for them in the
2989 check_relocs routine, but we won't fill them in in the
2990 relocate_section routine.
2992 We also check whether any of the remaining relocations apply
2993 against a readonly section, and set the DF_TEXTREL flag in this
2997 elf_m68k_discard_copies (h, inf)
2998 struct elf_link_hash_entry *h;
3001 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3002 struct elf_m68k_pcrel_relocs_copied *s;
3004 if (h->root.type == bfd_link_hash_warning)
3005 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3009 && !h->forced_local))
3011 if ((info->flags & DF_TEXTREL) == 0)
3013 /* Look for relocations against read-only sections. */
3014 for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
3017 if ((s->section->flags & SEC_READONLY) != 0)
3019 info->flags |= DF_TEXTREL;
3027 for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
3030 s->section->size -= s->count * sizeof (Elf32_External_Rela);
3035 /* Relocate an M68K ELF section. */
3038 elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section,
3039 contents, relocs, local_syms, local_sections)
3041 struct bfd_link_info *info;
3043 asection *input_section;
3045 Elf_Internal_Rela *relocs;
3046 Elf_Internal_Sym *local_syms;
3047 asection **local_sections;
3050 Elf_Internal_Shdr *symtab_hdr;
3051 struct elf_link_hash_entry **sym_hashes;
3055 struct elf_m68k_got *got;
3056 Elf_Internal_Rela *rel;
3057 Elf_Internal_Rela *relend;
3059 dynobj = elf_hash_table (info)->dynobj;
3060 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3061 sym_hashes = elf_sym_hashes (input_bfd);
3070 relend = relocs + input_section->reloc_count;
3071 for (; rel < relend; rel++)
3074 reloc_howto_type *howto;
3075 unsigned long r_symndx;
3076 struct elf_link_hash_entry *h;
3077 Elf_Internal_Sym *sym;
3080 bfd_boolean unresolved_reloc;
3081 bfd_reloc_status_type r;
3083 r_type = ELF32_R_TYPE (rel->r_info);
3084 if (r_type < 0 || r_type >= (int) R_68K_max)
3086 bfd_set_error (bfd_error_bad_value);
3089 howto = howto_table + r_type;
3091 r_symndx = ELF32_R_SYM (rel->r_info);
3096 unresolved_reloc = FALSE;
3098 if (r_symndx < symtab_hdr->sh_info)
3100 sym = local_syms + r_symndx;
3101 sec = local_sections[r_symndx];
3102 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3108 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3109 r_symndx, symtab_hdr, sym_hashes,
3111 unresolved_reloc, warned);
3114 if (sec != NULL && elf_discarded_section (sec))
3116 /* For relocs against symbols from removed linkonce sections,
3117 or sections discarded by a linker script, we just want the
3118 section contents zeroed. Avoid any special processing. */
3119 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
3125 if (info->relocatable)
3133 /* Relocation is to the address of the entry for this symbol
3134 in the global offset table. */
3136 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3138 BFD_ASSERT (rel->r_addend == 0);
3140 if (elf_m68k_hash_table (info)->local_gp_p)
3142 bfd_vma sgot_output_offset;
3147 sgot = bfd_get_section_by_name (dynobj, ".got");
3150 sgot_output_offset = sgot->output_offset;
3152 /* In this case we have a reference to
3153 _GLOBAL_OFFSET_TABLE_, but the GOT itself is
3155 ??? Issue a warning? */
3156 sgot_output_offset = 0;
3159 sgot_output_offset = sgot->output_offset;
3163 struct elf_m68k_bfd2got_entry *bfd2got_entry;
3166 = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
3167 input_bfd, SEARCH, NULL);
3169 if (bfd2got_entry != NULL)
3171 got = bfd2got_entry->got;
3172 BFD_ASSERT (got != NULL);
3174 got_offset = got->offset;
3177 /* In this case we have a reference to
3178 _GLOBAL_OFFSET_TABLE_, but no other references
3179 accessing any GOT entries.
3180 ??? Issue a warning? */
3184 got_offset = got->offset;
3186 /* Adjust GOT pointer to point to the GOT
3187 assigned to input_bfd. */
3188 rel->r_addend = sgot_output_offset + got_offset;
3191 BFD_ASSERT (got == NULL || got->offset == 0);
3199 /* Relocation is the offset of the entry for this symbol in
3200 the global offset table. */
3203 struct elf_m68k_got_entry_key key_;
3209 sgot = bfd_get_section_by_name (dynobj, ".got");
3210 BFD_ASSERT (sgot != NULL);
3215 got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
3216 input_bfd, MUST_FIND,
3218 BFD_ASSERT (got != NULL);
3221 /* Get GOT offset for this symbol. */
3222 elf_m68k_init_got_entry_key (&key_, h, input_bfd, r_symndx);
3223 off_ptr = &elf_m68k_get_got_entry (got, &key_, MUST_FIND,
3231 dyn = elf_hash_table (info)->dynamic_sections_created;
3232 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3239 /* This is actually a static link, or it is a
3240 -Bsymbolic link and the symbol is defined
3241 locally, or the symbol was forced to be local
3242 because of a version file.. We must initialize
3243 this entry in the global offset table. Since
3244 the offset must always be a multiple of 4, we
3245 use the least significant bit to record whether
3246 we have initialized it already.
3248 When doing a dynamic link, we create a .rela.got
3249 relocation entry to initialize the value. This
3250 is done in the finish_dynamic_symbol routine. */
3255 bfd_put_32 (output_bfd, relocation,
3256 sgot->contents + off);
3261 unresolved_reloc = FALSE;
3265 /* The offset must always be a multiple of 4. We use
3266 the least significant bit to record whether we have
3267 already generated the necessary reloc. */
3272 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
3277 Elf_Internal_Rela outrel;
3280 s = bfd_get_section_by_name (dynobj, ".rela.got");
3281 BFD_ASSERT (s != NULL);
3283 outrel.r_offset = (sgot->output_section->vma
3284 + sgot->output_offset
3286 outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
3287 outrel.r_addend = relocation;
3289 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
3290 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3297 if (r_type == R_68K_GOT8O
3298 || r_type == R_68K_GOT16O
3299 || r_type == R_68K_GOT32O)
3301 /* GOT pointer is adjusted to point to the start/middle
3302 of local GOT. Adjust the offset accordingly. */
3303 BFD_ASSERT (elf_m68k_hash_table (info)->use_neg_got_offsets_p
3304 || off >= got->offset);
3306 if (elf_m68k_hash_table (info)->local_gp_p)
3307 relocation = off - got->offset;
3310 BFD_ASSERT (got->offset == 0);
3311 relocation = sgot->output_offset + off;
3314 /* This relocation does not use the addend. */
3315 BFD_ASSERT (rel->r_addend == 0);
3319 relocation = (sgot->output_section->vma + sgot->output_offset
3327 /* Relocation is to the entry for this symbol in the
3328 procedure linkage table. */
3330 /* Resolve a PLTxx reloc against a local symbol directly,
3331 without using the procedure linkage table. */
3335 if (h->plt.offset == (bfd_vma) -1
3336 || !elf_hash_table (info)->dynamic_sections_created)
3338 /* We didn't make a PLT entry for this symbol. This
3339 happens when statically linking PIC code, or when
3340 using -Bsymbolic. */
3346 splt = bfd_get_section_by_name (dynobj, ".plt");
3347 BFD_ASSERT (splt != NULL);
3350 relocation = (splt->output_section->vma
3351 + splt->output_offset
3353 unresolved_reloc = FALSE;
3359 /* Relocation is the offset of the entry for this symbol in
3360 the procedure linkage table. */
3361 BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1);
3365 splt = bfd_get_section_by_name (dynobj, ".plt");
3366 BFD_ASSERT (splt != NULL);
3369 relocation = h->plt.offset;
3370 unresolved_reloc = FALSE;
3372 /* This relocation does not use the addend. */
3382 && h->forced_local))
3390 && (input_section->flags & SEC_ALLOC) != 0
3392 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3393 || h->root.type != bfd_link_hash_undefweak)
3394 && ((r_type != R_68K_PC8
3395 && r_type != R_68K_PC16
3396 && r_type != R_68K_PC32)
3400 || !h->def_regular))))
3402 Elf_Internal_Rela outrel;
3404 bfd_boolean skip, relocate;
3406 /* When generating a shared object, these relocations
3407 are copied into the output file to be resolved at run
3414 _bfd_elf_section_offset (output_bfd, info, input_section,
3416 if (outrel.r_offset == (bfd_vma) -1)
3418 else if (outrel.r_offset == (bfd_vma) -2)
3419 skip = TRUE, relocate = TRUE;
3420 outrel.r_offset += (input_section->output_section->vma
3421 + input_section->output_offset);
3424 memset (&outrel, 0, sizeof outrel);
3427 && (r_type == R_68K_PC8
3428 || r_type == R_68K_PC16
3429 || r_type == R_68K_PC32
3432 || !h->def_regular))
3434 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3435 outrel.r_addend = rel->r_addend;
3439 /* This symbol is local, or marked to become local. */
3440 outrel.r_addend = relocation + rel->r_addend;
3442 if (r_type == R_68K_32)
3445 outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
3451 if (bfd_is_abs_section (sec))
3453 else if (sec == NULL || sec->owner == NULL)
3455 bfd_set_error (bfd_error_bad_value);
3462 /* We are turning this relocation into one
3463 against a section symbol. It would be
3464 proper to subtract the symbol's value,
3465 osec->vma, from the emitted reloc addend,
3466 but ld.so expects buggy relocs. */
3467 osec = sec->output_section;
3468 indx = elf_section_data (osec)->dynindx;
3471 struct elf_link_hash_table *htab;
3472 htab = elf_hash_table (info);
3473 osec = htab->text_index_section;
3474 indx = elf_section_data (osec)->dynindx;
3476 BFD_ASSERT (indx != 0);
3479 outrel.r_info = ELF32_R_INFO (indx, r_type);
3483 sreloc = elf_section_data (input_section)->sreloc;
3487 loc = sreloc->contents;
3488 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3489 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3491 /* This reloc will be computed at runtime, so there's no
3492 need to do anything now, except for R_68K_32
3493 relocations that have been turned into
3501 case R_68K_GNU_VTINHERIT:
3502 case R_68K_GNU_VTENTRY:
3503 /* These are no-ops in the end. */
3510 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3511 because such sections are not SEC_ALLOC and thus ld.so will
3512 not process them. */
3513 if (unresolved_reloc
3514 && !((input_section->flags & SEC_DEBUGGING) != 0
3517 (*_bfd_error_handler)
3518 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3521 (long) rel->r_offset,
3523 h->root.root.string);
3527 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3528 contents, rel->r_offset,
3529 relocation, rel->r_addend);
3531 if (r != bfd_reloc_ok)
3536 name = h->root.root.string;
3539 name = bfd_elf_string_from_elf_section (input_bfd,
3540 symtab_hdr->sh_link,
3545 name = bfd_section_name (input_bfd, sec);
3548 if (r == bfd_reloc_overflow)
3550 if (!(info->callbacks->reloc_overflow
3551 (info, (h ? &h->root : NULL), name, howto->name,
3552 (bfd_vma) 0, input_bfd, input_section,
3558 (*_bfd_error_handler)
3559 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3560 input_bfd, input_section,
3561 (long) rel->r_offset, name, (int) r);
3570 /* Install an M_68K_PC32 relocation against VALUE at offset OFFSET
3571 into section SEC. */
3574 elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value)
3576 /* Make VALUE PC-relative. */
3577 value -= sec->output_section->vma + offset;
3579 /* Apply any in-place addend. */
3580 value += bfd_get_32 (sec->owner, sec->contents + offset);
3582 bfd_put_32 (sec->owner, value, sec->contents + offset);
3585 /* Finish up dynamic symbol handling. We set the contents of various
3586 dynamic sections here. */
3589 elf_m68k_finish_dynamic_symbol (output_bfd, info, h, sym)
3591 struct bfd_link_info *info;
3592 struct elf_link_hash_entry *h;
3593 Elf_Internal_Sym *sym;
3597 dynobj = elf_hash_table (info)->dynobj;
3599 if (h->plt.offset != (bfd_vma) -1)
3601 const struct elf_m68k_plt_info *plt_info;
3607 Elf_Internal_Rela rela;
3610 /* This symbol has an entry in the procedure linkage table. Set
3613 BFD_ASSERT (h->dynindx != -1);
3615 plt_info = elf_m68k_hash_table (info)->plt_info;
3616 splt = bfd_get_section_by_name (dynobj, ".plt");
3617 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
3618 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
3619 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3621 /* Get the index in the procedure linkage table which
3622 corresponds to this symbol. This is the index of this symbol
3623 in all the symbols for which we are making plt entries. The
3624 first entry in the procedure linkage table is reserved. */
3625 plt_index = (h->plt.offset / plt_info->size) - 1;
3627 /* Get the offset into the .got table of the entry that
3628 corresponds to this function. Each .got entry is 4 bytes.
3629 The first three are reserved. */
3630 got_offset = (plt_index + 3) * 4;
3632 memcpy (splt->contents + h->plt.offset,
3633 plt_info->symbol_entry,
3636 elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got,
3637 (sgot->output_section->vma
3638 + sgot->output_offset
3641 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3644 + plt_info->symbol_resolve_entry + 2);
3646 elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt,
3647 splt->output_section->vma);
3649 /* Fill in the entry in the global offset table. */
3650 bfd_put_32 (output_bfd,
3651 (splt->output_section->vma
3652 + splt->output_offset
3654 + plt_info->symbol_resolve_entry),
3655 sgot->contents + got_offset);
3657 /* Fill in the entry in the .rela.plt section. */
3658 rela.r_offset = (sgot->output_section->vma
3659 + sgot->output_offset
3661 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT);
3663 loc = srela->contents + plt_index * sizeof (Elf32_External_Rela);
3664 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3666 if (!h->def_regular)
3668 /* Mark the symbol as undefined, rather than as defined in
3669 the .plt section. Leave the value alone. */
3670 sym->st_shndx = SHN_UNDEF;
3674 if (elf_m68k_hash_entry (h)->glist != NULL)
3678 struct elf_m68k_got_entry *got_entry;
3680 /* This symbol has an entry in the global offset table. Set it
3683 sgot = bfd_get_section_by_name (dynobj, ".got");
3684 srela = bfd_get_section_by_name (dynobj, ".rela.got");
3685 BFD_ASSERT (sgot != NULL && srela != NULL);
3687 got_entry = elf_m68k_hash_entry (h)->glist;
3689 while (got_entry != NULL)
3691 Elf_Internal_Rela rela;
3694 rela.r_offset = (sgot->output_section->vma
3695 + sgot->output_offset
3696 + (got_entry->u.s2.offset &~ (bfd_vma) 1));
3698 /* If this is a -Bsymbolic link, and the symbol is defined
3699 locally, we just want to emit a RELATIVE reloc. Likewise if
3700 the symbol was forced to be local because of a version file.
3701 The entry in the global offset table will already have been
3702 initialized in the relocate_section function. */
3709 rela.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
3710 rela.r_addend = bfd_get_signed_32 (output_bfd,
3712 + (got_entry->u.s2.offset
3717 bfd_put_32 (output_bfd, (bfd_vma) 0,
3718 sgot->contents + (got_entry->u.s2.offset
3720 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT);
3724 loc = srela->contents;
3725 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
3726 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3728 got_entry = got_entry->u.s2.next;
3735 Elf_Internal_Rela rela;
3738 /* This symbol needs a copy reloc. Set it up. */
3740 BFD_ASSERT (h->dynindx != -1
3741 && (h->root.type == bfd_link_hash_defined
3742 || h->root.type == bfd_link_hash_defweak));
3744 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3746 BFD_ASSERT (s != NULL);
3748 rela.r_offset = (h->root.u.def.value
3749 + h->root.u.def.section->output_section->vma
3750 + h->root.u.def.section->output_offset);
3751 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY);
3753 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3754 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3757 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3758 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3759 || h == elf_hash_table (info)->hgot)
3760 sym->st_shndx = SHN_ABS;
3765 /* Finish up the dynamic sections. */
3768 elf_m68k_finish_dynamic_sections (output_bfd, info)
3770 struct bfd_link_info *info;
3776 dynobj = elf_hash_table (info)->dynobj;
3778 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
3779 BFD_ASSERT (sgot != NULL);
3780 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3782 if (elf_hash_table (info)->dynamic_sections_created)
3785 Elf32_External_Dyn *dyncon, *dynconend;
3787 splt = bfd_get_section_by_name (dynobj, ".plt");
3788 BFD_ASSERT (splt != NULL && sdyn != NULL);
3790 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3791 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3792 for (; dyncon < dynconend; dyncon++)
3794 Elf_Internal_Dyn dyn;
3798 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3811 s = bfd_get_section_by_name (output_bfd, name);
3812 BFD_ASSERT (s != NULL);
3813 dyn.d_un.d_ptr = s->vma;
3814 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3818 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
3819 BFD_ASSERT (s != NULL);
3820 dyn.d_un.d_val = s->size;
3821 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3825 /* The procedure linkage table relocs (DT_JMPREL) should
3826 not be included in the overall relocs (DT_RELA).
3827 Therefore, we override the DT_RELASZ entry here to
3828 make it not include the JMPREL relocs. Since the
3829 linker script arranges for .rela.plt to follow all
3830 other relocation sections, we don't have to worry
3831 about changing the DT_RELA entry. */
3832 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
3834 dyn.d_un.d_val -= s->size;
3835 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3840 /* Fill in the first entry in the procedure linkage table. */
3843 const struct elf_m68k_plt_info *plt_info;
3845 plt_info = elf_m68k_hash_table (info)->plt_info;
3846 memcpy (splt->contents, plt_info->plt0_entry, plt_info->size);
3848 elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4,
3849 (sgot->output_section->vma
3850 + sgot->output_offset
3853 elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8,
3854 (sgot->output_section->vma
3855 + sgot->output_offset
3858 elf_section_data (splt->output_section)->this_hdr.sh_entsize
3863 /* Fill in the first three entries in the global offset table. */
3867 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3869 bfd_put_32 (output_bfd,
3870 sdyn->output_section->vma + sdyn->output_offset,
3872 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3873 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3876 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3881 /* Given a .data section and a .emreloc in-memory section, store
3882 relocation information into the .emreloc section which can be
3883 used at runtime to relocate the section. This is called by the
3884 linker when the --embedded-relocs switch is used. This is called
3885 after the add_symbols entry point has been called for all the
3886 objects, and before the final_link entry point is called. */
3889 bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
3891 struct bfd_link_info *info;
3896 Elf_Internal_Shdr *symtab_hdr;
3897 Elf_Internal_Sym *isymbuf = NULL;
3898 Elf_Internal_Rela *internal_relocs = NULL;
3899 Elf_Internal_Rela *irel, *irelend;
3903 BFD_ASSERT (! info->relocatable);
3907 if (datasec->reloc_count == 0)
3910 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3912 /* Get a copy of the native relocations. */
3913 internal_relocs = (_bfd_elf_link_read_relocs
3914 (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
3915 info->keep_memory));
3916 if (internal_relocs == NULL)
3919 amt = (bfd_size_type) datasec->reloc_count * 12;
3920 relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
3921 if (relsec->contents == NULL)
3924 p = relsec->contents;
3926 irelend = internal_relocs + datasec->reloc_count;
3927 for (irel = internal_relocs; irel < irelend; irel++, p += 12)
3929 asection *targetsec;
3931 /* We are going to write a four byte longword into the runtime
3932 reloc section. The longword will be the address in the data
3933 section which must be relocated. It is followed by the name
3934 of the target section NUL-padded or truncated to 8
3937 /* We can only relocate absolute longword relocs at run time. */
3938 if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32)
3940 *errmsg = _("unsupported reloc type");
3941 bfd_set_error (bfd_error_bad_value);
3945 /* Get the target section referred to by the reloc. */
3946 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
3948 /* A local symbol. */
3949 Elf_Internal_Sym *isym;
3951 /* Read this BFD's local symbols if we haven't done so already. */
3952 if (isymbuf == NULL)
3954 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3955 if (isymbuf == NULL)
3956 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
3957 symtab_hdr->sh_info, 0,
3959 if (isymbuf == NULL)
3963 isym = isymbuf + ELF32_R_SYM (irel->r_info);
3964 targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3969 struct elf_link_hash_entry *h;
3971 /* An external symbol. */
3972 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
3973 h = elf_sym_hashes (abfd)[indx];
3974 BFD_ASSERT (h != NULL);
3975 if (h->root.type == bfd_link_hash_defined
3976 || h->root.type == bfd_link_hash_defweak)
3977 targetsec = h->root.u.def.section;
3982 bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
3983 memset (p + 4, 0, 8);
3984 if (targetsec != NULL)
3985 strncpy ((char *) p + 4, targetsec->output_section->name, 8);
3988 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3990 if (internal_relocs != NULL
3991 && elf_section_data (datasec)->relocs != internal_relocs)
3992 free (internal_relocs);
3996 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3998 if (internal_relocs != NULL
3999 && elf_section_data (datasec)->relocs != internal_relocs)
4000 free (internal_relocs);
4004 /* Set target options. */
4007 bfd_elf_m68k_set_target_options (struct bfd_link_info *info, int got_handling)
4009 struct elf_m68k_link_hash_table *htab;
4011 htab = elf_m68k_hash_table (info);
4013 switch (got_handling)
4017 htab->local_gp_p = FALSE;
4018 htab->use_neg_got_offsets_p = FALSE;
4019 htab->allow_multigot_p = FALSE;
4023 /* --got=negative. */
4024 htab->local_gp_p = TRUE;
4025 htab->use_neg_got_offsets_p = TRUE;
4026 htab->allow_multigot_p = FALSE;
4030 /* --got=multigot. */
4031 htab->local_gp_p = TRUE;
4032 htab->use_neg_got_offsets_p = TRUE;
4033 htab->allow_multigot_p = TRUE;
4041 static enum elf_reloc_type_class
4042 elf32_m68k_reloc_type_class (rela)
4043 const Elf_Internal_Rela *rela;
4045 switch ((int) ELF32_R_TYPE (rela->r_info))
4047 case R_68K_RELATIVE:
4048 return reloc_class_relative;
4049 case R_68K_JMP_SLOT:
4050 return reloc_class_plt;
4052 return reloc_class_copy;
4054 return reloc_class_normal;
4058 /* Return address for Ith PLT stub in section PLT, for relocation REL
4059 or (bfd_vma) -1 if it should not be included. */
4062 elf_m68k_plt_sym_val (bfd_vma i, const asection *plt,
4063 const arelent *rel ATTRIBUTE_UNUSED)
4065 return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size;
4068 #define TARGET_BIG_SYM bfd_elf32_m68k_vec
4069 #define TARGET_BIG_NAME "elf32-m68k"
4070 #define ELF_MACHINE_CODE EM_68K
4071 #define ELF_MAXPAGESIZE 0x2000
4072 #define elf_backend_create_dynamic_sections \
4073 _bfd_elf_create_dynamic_sections
4074 #define bfd_elf32_bfd_link_hash_table_create \
4075 elf_m68k_link_hash_table_create
4076 /* ??? Should it be this macro or bfd_elfNN_bfd_link_hash_table_create? */
4077 #define bfd_elf32_bfd_link_hash_table_free \
4078 elf_m68k_link_hash_table_free
4079 #define bfd_elf32_bfd_final_link bfd_elf_final_link
4081 #define elf_backend_check_relocs elf_m68k_check_relocs
4082 #define elf_backend_always_size_sections \
4083 elf_m68k_always_size_sections
4084 #define elf_backend_adjust_dynamic_symbol \
4085 elf_m68k_adjust_dynamic_symbol
4086 #define elf_backend_size_dynamic_sections \
4087 elf_m68k_size_dynamic_sections
4088 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4089 #define elf_backend_relocate_section elf_m68k_relocate_section
4090 #define elf_backend_finish_dynamic_symbol \
4091 elf_m68k_finish_dynamic_symbol
4092 #define elf_backend_finish_dynamic_sections \
4093 elf_m68k_finish_dynamic_sections
4094 #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook
4095 #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook
4096 #define elf_backend_copy_indirect_symbol elf_m68k_copy_indirect_symbol
4097 #define bfd_elf32_bfd_merge_private_bfd_data \
4098 elf32_m68k_merge_private_bfd_data
4099 #define bfd_elf32_bfd_set_private_flags \
4100 elf32_m68k_set_private_flags
4101 #define bfd_elf32_bfd_print_private_bfd_data \
4102 elf32_m68k_print_private_bfd_data
4103 #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class
4104 #define elf_backend_plt_sym_val elf_m68k_plt_sym_val
4105 #define elf_backend_object_p elf32_m68k_object_p
4107 #define elf_backend_can_gc_sections 1
4108 #define elf_backend_can_refcount 1
4109 #define elf_backend_want_got_plt 1
4110 #define elf_backend_plt_readonly 1
4111 #define elf_backend_want_plt_sym 0
4112 #define elf_backend_got_header_size 12
4113 #define elf_backend_rela_normal 1
4115 #include "elf32-target.h"