Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Motorola 68k series support for 32-bit ELF |
b2a8e766 AM |
2 | Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
3 | 2004 Free Software Foundation, Inc. | |
252b5132 | 4 | |
ae9a127f | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
ae9a127f NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
252b5132 | 11 | |
ae9a127f NC |
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. | |
252b5132 | 16 | |
ae9a127f NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
252b5132 RH |
20 | |
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "bfdlink.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "elf/m68k.h" | |
27 | ||
28 | static reloc_howto_type *reloc_type_lookup | |
29 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
30 | static void rtype_to_howto | |
947216bf | 31 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
252b5132 RH |
32 | static struct bfd_hash_entry *elf_m68k_link_hash_newfunc |
33 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
34 | static struct bfd_link_hash_table *elf_m68k_link_hash_table_create | |
35 | PARAMS ((bfd *)); | |
b34976b6 | 36 | static bfd_boolean elf_m68k_check_relocs |
252b5132 RH |
37 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
38 | const Elf_Internal_Rela *)); | |
39 | static asection *elf_m68k_gc_mark_hook | |
1e2f5b6e | 40 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
252b5132 | 41 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
b34976b6 | 42 | static bfd_boolean elf_m68k_gc_sweep_hook |
252b5132 RH |
43 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
44 | const Elf_Internal_Rela *)); | |
b34976b6 | 45 | static bfd_boolean elf_m68k_adjust_dynamic_symbol |
252b5132 | 46 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 47 | static bfd_boolean elf_m68k_size_dynamic_sections |
252b5132 | 48 | PARAMS ((bfd *, struct bfd_link_info *)); |
0cca5f05 AS |
49 | static bfd_boolean elf_m68k_discard_copies |
50 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
b34976b6 | 51 | static bfd_boolean elf_m68k_relocate_section |
252b5132 RH |
52 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
53 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 | 54 | static bfd_boolean elf_m68k_finish_dynamic_symbol |
252b5132 RH |
55 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
56 | Elf_Internal_Sym *)); | |
b34976b6 | 57 | static bfd_boolean elf_m68k_finish_dynamic_sections |
252b5132 RH |
58 | PARAMS ((bfd *, struct bfd_link_info *)); |
59 | ||
b34976b6 | 60 | static bfd_boolean elf32_m68k_set_private_flags |
9e1281c7 | 61 | PARAMS ((bfd *, flagword)); |
b34976b6 | 62 | static bfd_boolean elf32_m68k_merge_private_bfd_data |
9e1281c7 | 63 | PARAMS ((bfd *, bfd *)); |
b34976b6 | 64 | static bfd_boolean elf32_m68k_print_private_bfd_data |
9e1281c7 | 65 | PARAMS ((bfd *, PTR)); |
aa91b392 | 66 | static enum elf_reloc_type_class elf32_m68k_reloc_type_class |
f51e552e | 67 | PARAMS ((const Elf_Internal_Rela *)); |
9e1281c7 | 68 | |
252b5132 | 69 | static reloc_howto_type howto_table[] = { |
b34976b6 AM |
70 | HOWTO(R_68K_NONE, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", FALSE, 0, 0x00000000,FALSE), |
71 | HOWTO(R_68K_32, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", FALSE, 0, 0xffffffff,FALSE), | |
72 | HOWTO(R_68K_16, 0, 1,16, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", FALSE, 0, 0x0000ffff,FALSE), | |
73 | HOWTO(R_68K_8, 0, 0, 8, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", FALSE, 0, 0x000000ff,FALSE), | |
74 | HOWTO(R_68K_PC32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PC32", FALSE, 0, 0xffffffff,TRUE), | |
75 | HOWTO(R_68K_PC16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", FALSE, 0, 0x0000ffff,TRUE), | |
76 | HOWTO(R_68K_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", FALSE, 0, 0x000000ff,TRUE), | |
77 | HOWTO(R_68K_GOT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32", FALSE, 0, 0xffffffff,TRUE), | |
78 | HOWTO(R_68K_GOT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", FALSE, 0, 0x0000ffff,TRUE), | |
79 | HOWTO(R_68K_GOT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", FALSE, 0, 0x000000ff,TRUE), | |
80 | HOWTO(R_68K_GOT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32O", FALSE, 0, 0xffffffff,FALSE), | |
81 | HOWTO(R_68K_GOT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", FALSE, 0, 0x0000ffff,FALSE), | |
82 | HOWTO(R_68K_GOT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", FALSE, 0, 0x000000ff,FALSE), | |
83 | HOWTO(R_68K_PLT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32", FALSE, 0, 0xffffffff,TRUE), | |
84 | HOWTO(R_68K_PLT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", FALSE, 0, 0x0000ffff,TRUE), | |
85 | HOWTO(R_68K_PLT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", FALSE, 0, 0x000000ff,TRUE), | |
86 | HOWTO(R_68K_PLT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32O", FALSE, 0, 0xffffffff,FALSE), | |
87 | HOWTO(R_68K_PLT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", FALSE, 0, 0x0000ffff,FALSE), | |
88 | HOWTO(R_68K_PLT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", FALSE, 0, 0x000000ff,FALSE), | |
89 | HOWTO(R_68K_COPY, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", FALSE, 0, 0xffffffff,FALSE), | |
90 | HOWTO(R_68K_GLOB_DAT, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_GLOB_DAT", FALSE, 0, 0xffffffff,FALSE), | |
91 | HOWTO(R_68K_JMP_SLOT, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_JMP_SLOT", FALSE, 0, 0xffffffff,FALSE), | |
92 | HOWTO(R_68K_RELATIVE, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_RELATIVE", FALSE, 0, 0xffffffff,FALSE), | |
ae9a127f | 93 | /* GNU extension to record C++ vtable hierarchy. */ |
252b5132 RH |
94 | HOWTO (R_68K_GNU_VTINHERIT, /* type */ |
95 | 0, /* rightshift */ | |
96 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
97 | 0, /* bitsize */ | |
b34976b6 | 98 | FALSE, /* pc_relative */ |
252b5132 RH |
99 | 0, /* bitpos */ |
100 | complain_overflow_dont, /* complain_on_overflow */ | |
101 | NULL, /* special_function */ | |
102 | "R_68K_GNU_VTINHERIT", /* name */ | |
b34976b6 | 103 | FALSE, /* partial_inplace */ |
252b5132 RH |
104 | 0, /* src_mask */ |
105 | 0, /* dst_mask */ | |
b34976b6 | 106 | FALSE), |
ae9a127f | 107 | /* GNU extension to record C++ vtable member usage. */ |
252b5132 RH |
108 | HOWTO (R_68K_GNU_VTENTRY, /* type */ |
109 | 0, /* rightshift */ | |
110 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
111 | 0, /* bitsize */ | |
b34976b6 | 112 | FALSE, /* pc_relative */ |
252b5132 RH |
113 | 0, /* bitpos */ |
114 | complain_overflow_dont, /* complain_on_overflow */ | |
115 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
116 | "R_68K_GNU_VTENTRY", /* name */ | |
b34976b6 | 117 | FALSE, /* partial_inplace */ |
252b5132 RH |
118 | 0, /* src_mask */ |
119 | 0, /* dst_mask */ | |
b34976b6 | 120 | FALSE), |
252b5132 RH |
121 | }; |
122 | ||
123 | static void | |
124 | rtype_to_howto (abfd, cache_ptr, dst) | |
121089cb | 125 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
126 | arelent *cache_ptr; |
127 | Elf_Internal_Rela *dst; | |
128 | { | |
129 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_68K_max); | |
130 | cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)]; | |
131 | } | |
132 | ||
133 | #define elf_info_to_howto rtype_to_howto | |
134 | ||
135 | static const struct | |
136 | { | |
137 | bfd_reloc_code_real_type bfd_val; | |
138 | int elf_val; | |
139 | } reloc_map[] = { | |
140 | { BFD_RELOC_NONE, R_68K_NONE }, | |
141 | { BFD_RELOC_32, R_68K_32 }, | |
142 | { BFD_RELOC_16, R_68K_16 }, | |
143 | { BFD_RELOC_8, R_68K_8 }, | |
144 | { BFD_RELOC_32_PCREL, R_68K_PC32 }, | |
145 | { BFD_RELOC_16_PCREL, R_68K_PC16 }, | |
146 | { BFD_RELOC_8_PCREL, R_68K_PC8 }, | |
147 | { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 }, | |
148 | { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 }, | |
149 | { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 }, | |
150 | { BFD_RELOC_32_GOTOFF, R_68K_GOT32O }, | |
151 | { BFD_RELOC_16_GOTOFF, R_68K_GOT16O }, | |
152 | { BFD_RELOC_8_GOTOFF, R_68K_GOT8O }, | |
153 | { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 }, | |
154 | { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 }, | |
155 | { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 }, | |
156 | { BFD_RELOC_32_PLTOFF, R_68K_PLT32O }, | |
157 | { BFD_RELOC_16_PLTOFF, R_68K_PLT16O }, | |
158 | { BFD_RELOC_8_PLTOFF, R_68K_PLT8O }, | |
159 | { BFD_RELOC_NONE, R_68K_COPY }, | |
160 | { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT }, | |
161 | { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT }, | |
162 | { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE }, | |
163 | { BFD_RELOC_CTOR, R_68K_32 }, | |
164 | { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT }, | |
165 | { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY }, | |
166 | }; | |
167 | ||
168 | static reloc_howto_type * | |
169 | reloc_type_lookup (abfd, code) | |
121089cb | 170 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
171 | bfd_reloc_code_real_type code; |
172 | { | |
173 | unsigned int i; | |
174 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
175 | { | |
176 | if (reloc_map[i].bfd_val == code) | |
177 | return &howto_table[reloc_map[i].elf_val]; | |
178 | } | |
179 | return 0; | |
180 | } | |
181 | ||
182 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup | |
183 | #define ELF_ARCH bfd_arch_m68k | |
252b5132 RH |
184 | \f |
185 | /* Functions for the m68k ELF linker. */ | |
186 | ||
187 | /* The name of the dynamic interpreter. This is put in the .interp | |
188 | section. */ | |
189 | ||
190 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
191 | ||
192 | /* The size in bytes of an entry in the procedure linkage table. */ | |
193 | ||
194 | #define PLT_ENTRY_SIZE 20 | |
195 | ||
196 | /* The first entry in a procedure linkage table looks like this. See | |
197 | the SVR4 ABI m68k supplement to see how this works. */ | |
198 | ||
199 | static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] = | |
200 | { | |
201 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ | |
202 | 0, 0, 0, 0, /* replaced with offset to .got + 4. */ | |
203 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */ | |
204 | 0, 0, 0, 0, /* replaced with offset to .got + 8. */ | |
205 | 0, 0, 0, 0 /* pad out to 20 bytes. */ | |
206 | }; | |
207 | ||
208 | /* Subsequent entries in a procedure linkage table look like this. */ | |
209 | ||
210 | static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] = | |
211 | { | |
212 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */ | |
213 | 0, 0, 0, 0, /* replaced with offset to symbol's .got entry. */ | |
214 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
215 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
216 | 0x60, 0xff, /* bra.l .plt */ | |
217 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
218 | }; | |
219 | ||
9e1281c7 CM |
220 | #define CPU32_FLAG(abfd) (elf_elfheader (abfd)->e_flags & EF_CPU32) |
221 | ||
222 | #define PLT_CPU32_ENTRY_SIZE 24 | |
223 | /* Procedure linkage table entries for the cpu32 */ | |
224 | static const bfd_byte elf_cpu32_plt0_entry[PLT_CPU32_ENTRY_SIZE] = | |
225 | { | |
6091b433 | 226 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ |
9e1281c7 | 227 | 0, 0, 0, 0, /* replaced with offset to .got + 4. */ |
6091b433 | 228 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
c3668558 | 229 | 0, 0, 0, 0, /* replace with offset to .got +8. */ |
6091b433 | 230 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 CM |
231 | 0, 0, 0, 0, /* pad out to 24 bytes. */ |
232 | 0, 0 | |
233 | }; | |
234 | ||
235 | static const bfd_byte elf_cpu32_plt_entry[PLT_CPU32_ENTRY_SIZE] = | |
236 | { | |
1ca42bad | 237 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
9e1281c7 | 238 | 0, 0, 0, 0, /* replaced with offset to symbol's .got entry. */ |
1ca42bad | 239 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 CM |
240 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
241 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
242 | 0x60, 0xff, /* bra.l .plt */ | |
243 | 0, 0, 0, 0, /* replaced with offset to start of .plt. */ | |
244 | 0, 0 | |
245 | }; | |
246 | ||
252b5132 RH |
247 | /* The m68k linker needs to keep track of the number of relocs that it |
248 | decides to copy in check_relocs for each symbol. This is so that it | |
249 | can discard PC relative relocs if it doesn't need them when linking | |
250 | with -Bsymbolic. We store the information in a field extending the | |
251 | regular ELF linker hash table. */ | |
252 | ||
253 | /* This structure keeps track of the number of PC relative relocs we have | |
254 | copied for a given symbol. */ | |
255 | ||
256 | struct elf_m68k_pcrel_relocs_copied | |
257 | { | |
258 | /* Next section. */ | |
259 | struct elf_m68k_pcrel_relocs_copied *next; | |
260 | /* A section in dynobj. */ | |
261 | asection *section; | |
262 | /* Number of relocs copied in this section. */ | |
263 | bfd_size_type count; | |
264 | }; | |
265 | ||
266 | /* m68k ELF linker hash entry. */ | |
267 | ||
268 | struct elf_m68k_link_hash_entry | |
269 | { | |
270 | struct elf_link_hash_entry root; | |
271 | ||
272 | /* Number of PC relative relocs copied for this symbol. */ | |
273 | struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied; | |
274 | }; | |
275 | ||
0cca5f05 AS |
276 | #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent)) |
277 | ||
252b5132 RH |
278 | /* m68k ELF linker hash table. */ |
279 | ||
280 | struct elf_m68k_link_hash_table | |
281 | { | |
282 | struct elf_link_hash_table root; | |
b6152c34 AS |
283 | |
284 | /* Small local sym to section mapping cache. */ | |
285 | struct sym_sec_cache sym_sec; | |
252b5132 RH |
286 | }; |
287 | ||
252b5132 RH |
288 | /* Get the m68k ELF linker hash table from a link_info structure. */ |
289 | ||
290 | #define elf_m68k_hash_table(p) \ | |
291 | ((struct elf_m68k_link_hash_table *) (p)->hash) | |
292 | ||
293 | /* Create an entry in an m68k ELF linker hash table. */ | |
294 | ||
295 | static struct bfd_hash_entry * | |
296 | elf_m68k_link_hash_newfunc (entry, table, string) | |
297 | struct bfd_hash_entry *entry; | |
298 | struct bfd_hash_table *table; | |
299 | const char *string; | |
300 | { | |
0cca5f05 | 301 | struct bfd_hash_entry *ret = entry; |
252b5132 RH |
302 | |
303 | /* Allocate the structure if it has not already been allocated by a | |
304 | subclass. */ | |
0cca5f05 AS |
305 | if (ret == NULL) |
306 | ret = bfd_hash_allocate (table, | |
307 | sizeof (struct elf_m68k_link_hash_entry)); | |
308 | if (ret == NULL) | |
309 | return ret; | |
252b5132 RH |
310 | |
311 | /* Call the allocation method of the superclass. */ | |
0cca5f05 AS |
312 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); |
313 | if (ret != NULL) | |
314 | elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
252b5132 | 315 | |
0cca5f05 | 316 | return ret; |
252b5132 RH |
317 | } |
318 | ||
319 | /* Create an m68k ELF linker hash table. */ | |
320 | ||
321 | static struct bfd_link_hash_table * | |
322 | elf_m68k_link_hash_table_create (abfd) | |
323 | bfd *abfd; | |
324 | { | |
325 | struct elf_m68k_link_hash_table *ret; | |
dc810e39 | 326 | bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table); |
252b5132 | 327 | |
e2d34d7d | 328 | ret = (struct elf_m68k_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
329 | if (ret == (struct elf_m68k_link_hash_table *) NULL) |
330 | return NULL; | |
331 | ||
332 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
333 | elf_m68k_link_hash_newfunc)) | |
334 | { | |
e2d34d7d | 335 | free (ret); |
252b5132 RH |
336 | return NULL; |
337 | } | |
338 | ||
b6152c34 AS |
339 | ret->sym_sec.abfd = NULL; |
340 | ||
252b5132 RH |
341 | return &ret->root.root; |
342 | } | |
343 | ||
ae9a127f | 344 | /* Keep m68k-specific flags in the ELF header. */ |
b34976b6 | 345 | static bfd_boolean |
9e1281c7 CM |
346 | elf32_m68k_set_private_flags (abfd, flags) |
347 | bfd *abfd; | |
348 | flagword flags; | |
349 | { | |
350 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
351 | elf_flags_init (abfd) = TRUE; |
352 | return TRUE; | |
9e1281c7 CM |
353 | } |
354 | ||
9e1281c7 CM |
355 | /* Merge backend specific data from an object file to the output |
356 | object file when linking. */ | |
b34976b6 | 357 | static bfd_boolean |
9e1281c7 CM |
358 | elf32_m68k_merge_private_bfd_data (ibfd, obfd) |
359 | bfd *ibfd; | |
360 | bfd *obfd; | |
361 | { | |
362 | flagword out_flags; | |
363 | flagword in_flags; | |
364 | ||
365 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
366 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 367 | return TRUE; |
9e1281c7 CM |
368 | |
369 | in_flags = elf_elfheader (ibfd)->e_flags; | |
370 | out_flags = elf_elfheader (obfd)->e_flags; | |
371 | ||
372 | if (!elf_flags_init (obfd)) | |
373 | { | |
b34976b6 | 374 | elf_flags_init (obfd) = TRUE; |
9e1281c7 CM |
375 | elf_elfheader (obfd)->e_flags = in_flags; |
376 | } | |
377 | ||
b34976b6 | 378 | return TRUE; |
9e1281c7 CM |
379 | } |
380 | ||
ae9a127f | 381 | /* Display the flags field. */ |
b34976b6 | 382 | static bfd_boolean |
9e1281c7 CM |
383 | elf32_m68k_print_private_bfd_data (abfd, ptr) |
384 | bfd *abfd; | |
385 | PTR ptr; | |
386 | { | |
387 | FILE *file = (FILE *) ptr; | |
388 | ||
389 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
390 | ||
391 | /* Print normal ELF private data. */ | |
392 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
393 | ||
394 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
395 | ||
396 | /* xgettext:c-format */ | |
517662d4 | 397 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
9e1281c7 CM |
398 | |
399 | if (elf_elfheader (abfd)->e_flags & EF_CPU32) | |
517662d4 | 400 | fprintf (file, _(" [cpu32]")); |
9e1281c7 | 401 | |
76f57f3a | 402 | if (elf_elfheader (abfd)->e_flags & EF_M68000) |
428d0de3 | 403 | fprintf (file, _(" [m68000]")); |
76f57f3a | 404 | |
9e1281c7 CM |
405 | fputc ('\n', file); |
406 | ||
b34976b6 | 407 | return TRUE; |
9e1281c7 | 408 | } |
252b5132 RH |
409 | /* Look through the relocs for a section during the first phase, and |
410 | allocate space in the global offset table or procedure linkage | |
411 | table. */ | |
412 | ||
b34976b6 | 413 | static bfd_boolean |
252b5132 RH |
414 | elf_m68k_check_relocs (abfd, info, sec, relocs) |
415 | bfd *abfd; | |
416 | struct bfd_link_info *info; | |
417 | asection *sec; | |
418 | const Elf_Internal_Rela *relocs; | |
419 | { | |
420 | bfd *dynobj; | |
421 | Elf_Internal_Shdr *symtab_hdr; | |
422 | struct elf_link_hash_entry **sym_hashes; | |
423 | bfd_signed_vma *local_got_refcounts; | |
424 | const Elf_Internal_Rela *rel; | |
425 | const Elf_Internal_Rela *rel_end; | |
426 | asection *sgot; | |
427 | asection *srelgot; | |
428 | asection *sreloc; | |
429 | ||
1049f94e | 430 | if (info->relocatable) |
b34976b6 | 431 | return TRUE; |
252b5132 RH |
432 | |
433 | dynobj = elf_hash_table (info)->dynobj; | |
434 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
435 | sym_hashes = elf_sym_hashes (abfd); | |
436 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
437 | ||
438 | sgot = NULL; | |
439 | srelgot = NULL; | |
440 | sreloc = NULL; | |
441 | ||
442 | rel_end = relocs + sec->reloc_count; | |
443 | for (rel = relocs; rel < rel_end; rel++) | |
444 | { | |
445 | unsigned long r_symndx; | |
446 | struct elf_link_hash_entry *h; | |
447 | ||
448 | r_symndx = ELF32_R_SYM (rel->r_info); | |
449 | ||
450 | if (r_symndx < symtab_hdr->sh_info) | |
451 | h = NULL; | |
452 | else | |
453 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
454 | ||
455 | switch (ELF32_R_TYPE (rel->r_info)) | |
456 | { | |
457 | case R_68K_GOT8: | |
458 | case R_68K_GOT16: | |
459 | case R_68K_GOT32: | |
460 | if (h != NULL | |
461 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
462 | break; | |
463 | /* Fall through. */ | |
464 | case R_68K_GOT8O: | |
465 | case R_68K_GOT16O: | |
466 | case R_68K_GOT32O: | |
467 | /* This symbol requires a global offset table entry. */ | |
468 | ||
469 | if (dynobj == NULL) | |
470 | { | |
471 | /* Create the .got section. */ | |
472 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
473 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 474 | return FALSE; |
252b5132 RH |
475 | } |
476 | ||
477 | if (sgot == NULL) | |
478 | { | |
479 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
480 | BFD_ASSERT (sgot != NULL); | |
481 | } | |
482 | ||
483 | if (srelgot == NULL | |
484 | && (h != NULL || info->shared)) | |
485 | { | |
486 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
487 | if (srelgot == NULL) | |
488 | { | |
489 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
490 | if (srelgot == NULL | |
491 | || !bfd_set_section_flags (dynobj, srelgot, | |
492 | (SEC_ALLOC | |
493 | | SEC_LOAD | |
494 | | SEC_HAS_CONTENTS | |
495 | | SEC_IN_MEMORY | |
496 | | SEC_LINKER_CREATED | |
497 | | SEC_READONLY)) | |
498 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) | |
b34976b6 | 499 | return FALSE; |
252b5132 RH |
500 | } |
501 | } | |
502 | ||
503 | if (h != NULL) | |
504 | { | |
51b64d56 | 505 | if (h->got.refcount == 0) |
252b5132 | 506 | { |
252b5132 | 507 | /* Make sure this symbol is output as a dynamic symbol. */ |
b6152c34 | 508 | if (h->dynindx == -1 |
f5385ebf | 509 | && !h->forced_local) |
252b5132 | 510 | { |
c152c796 | 511 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 512 | return FALSE; |
252b5132 RH |
513 | } |
514 | ||
515 | /* Allocate space in the .got section. */ | |
eea6121a | 516 | sgot->size += 4; |
252b5132 | 517 | /* Allocate relocation space. */ |
eea6121a | 518 | srelgot->size += sizeof (Elf32_External_Rela); |
252b5132 | 519 | } |
51b64d56 | 520 | h->got.refcount++; |
252b5132 RH |
521 | } |
522 | else | |
523 | { | |
524 | /* This is a global offset table entry for a local symbol. */ | |
525 | if (local_got_refcounts == NULL) | |
526 | { | |
dc810e39 | 527 | bfd_size_type size; |
252b5132 | 528 | |
dc810e39 AM |
529 | size = symtab_hdr->sh_info; |
530 | size *= sizeof (bfd_signed_vma); | |
252b5132 | 531 | local_got_refcounts = ((bfd_signed_vma *) |
51b64d56 | 532 | bfd_zalloc (abfd, size)); |
252b5132 | 533 | if (local_got_refcounts == NULL) |
b34976b6 | 534 | return FALSE; |
252b5132 | 535 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 536 | } |
51b64d56 | 537 | if (local_got_refcounts[r_symndx] == 0) |
252b5132 | 538 | { |
eea6121a | 539 | sgot->size += 4; |
252b5132 RH |
540 | if (info->shared) |
541 | { | |
542 | /* If we are generating a shared object, we need to | |
543 | output a R_68K_RELATIVE reloc so that the dynamic | |
544 | linker can adjust this GOT entry. */ | |
eea6121a | 545 | srelgot->size += sizeof (Elf32_External_Rela); |
252b5132 RH |
546 | } |
547 | } | |
51b64d56 | 548 | local_got_refcounts[r_symndx]++; |
252b5132 RH |
549 | } |
550 | break; | |
551 | ||
552 | case R_68K_PLT8: | |
553 | case R_68K_PLT16: | |
554 | case R_68K_PLT32: | |
555 | /* This symbol requires a procedure linkage table entry. We | |
556 | actually build the entry in adjust_dynamic_symbol, | |
557 | because this might be a case of linking PIC code which is | |
558 | never referenced by a dynamic object, in which case we | |
559 | don't need to generate a procedure linkage table entry | |
560 | after all. */ | |
561 | ||
562 | /* If this is a local symbol, we resolve it directly without | |
563 | creating a procedure linkage table entry. */ | |
564 | if (h == NULL) | |
565 | continue; | |
566 | ||
f5385ebf | 567 | h->needs_plt = 1; |
51b64d56 | 568 | h->plt.refcount++; |
252b5132 RH |
569 | break; |
570 | ||
571 | case R_68K_PLT8O: | |
572 | case R_68K_PLT16O: | |
573 | case R_68K_PLT32O: | |
574 | /* This symbol requires a procedure linkage table entry. */ | |
575 | ||
576 | if (h == NULL) | |
577 | { | |
578 | /* It does not make sense to have this relocation for a | |
579 | local symbol. FIXME: does it? How to handle it if | |
580 | it does make sense? */ | |
581 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 582 | return FALSE; |
252b5132 RH |
583 | } |
584 | ||
585 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 586 | if (h->dynindx == -1 |
f5385ebf | 587 | && !h->forced_local) |
252b5132 | 588 | { |
c152c796 | 589 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 590 | return FALSE; |
252b5132 RH |
591 | } |
592 | ||
f5385ebf | 593 | h->needs_plt = 1; |
51b64d56 | 594 | h->plt.refcount++; |
252b5132 RH |
595 | break; |
596 | ||
597 | case R_68K_PC8: | |
598 | case R_68K_PC16: | |
599 | case R_68K_PC32: | |
600 | /* If we are creating a shared library and this is not a local | |
601 | symbol, we need to copy the reloc into the shared library. | |
602 | However when linking with -Bsymbolic and this is a global | |
603 | symbol which is defined in an object we are including in the | |
604 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
605 | reloc directly. At this point we have not seen all the input | |
606 | files, so it is possible that DEF_REGULAR is not set now but | |
607 | will be set later (it is never cleared). We account for that | |
608 | possibility below by storing information in the | |
609 | pcrel_relocs_copied field of the hash table entry. */ | |
610 | if (!(info->shared | |
611 | && (sec->flags & SEC_ALLOC) != 0 | |
612 | && h != NULL | |
613 | && (!info->symbolic | |
b6152c34 | 614 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 615 | || !h->def_regular))) |
252b5132 RH |
616 | { |
617 | if (h != NULL) | |
618 | { | |
619 | /* Make sure a plt entry is created for this symbol if | |
620 | it turns out to be a function defined by a dynamic | |
621 | object. */ | |
51b64d56 | 622 | h->plt.refcount++; |
252b5132 RH |
623 | } |
624 | break; | |
625 | } | |
626 | /* Fall through. */ | |
627 | case R_68K_8: | |
628 | case R_68K_16: | |
629 | case R_68K_32: | |
630 | if (h != NULL) | |
631 | { | |
632 | /* Make sure a plt entry is created for this symbol if it | |
633 | turns out to be a function defined by a dynamic object. */ | |
51b64d56 | 634 | h->plt.refcount++; |
252b5132 RH |
635 | } |
636 | ||
637 | /* If we are creating a shared library, we need to copy the | |
638 | reloc into the shared library. */ | |
639 | if (info->shared | |
640 | && (sec->flags & SEC_ALLOC) != 0) | |
641 | { | |
642 | /* When creating a shared object, we must copy these | |
643 | reloc types into the output file. We create a reloc | |
644 | section in dynobj and make room for this reloc. */ | |
645 | if (sreloc == NULL) | |
646 | { | |
647 | const char *name; | |
648 | ||
649 | name = (bfd_elf_string_from_elf_section | |
650 | (abfd, | |
651 | elf_elfheader (abfd)->e_shstrndx, | |
652 | elf_section_data (sec)->rel_hdr.sh_name)); | |
653 | if (name == NULL) | |
b34976b6 | 654 | return FALSE; |
252b5132 RH |
655 | |
656 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
657 | && strcmp (bfd_get_section_name (abfd, sec), | |
658 | name + 5) == 0); | |
659 | ||
660 | sreloc = bfd_get_section_by_name (dynobj, name); | |
661 | if (sreloc == NULL) | |
662 | { | |
663 | sreloc = bfd_make_section (dynobj, name); | |
664 | if (sreloc == NULL | |
665 | || !bfd_set_section_flags (dynobj, sreloc, | |
666 | (SEC_ALLOC | |
667 | | SEC_LOAD | |
668 | | SEC_HAS_CONTENTS | |
669 | | SEC_IN_MEMORY | |
670 | | SEC_LINKER_CREATED | |
671 | | SEC_READONLY)) | |
672 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 673 | return FALSE; |
252b5132 | 674 | } |
d2ff124f | 675 | elf_section_data (sec)->sreloc = sreloc; |
252b5132 RH |
676 | } |
677 | ||
3e829b4a AS |
678 | if (sec->flags & SEC_READONLY |
679 | /* Don't set DF_TEXTREL yet for PC relative | |
680 | relocations, they might be discarded later. */ | |
681 | && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8 | |
682 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
683 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)) | |
684 | info->flags |= DF_TEXTREL; | |
685 | ||
eea6121a | 686 | sreloc->size += sizeof (Elf32_External_Rela); |
252b5132 | 687 | |
b6152c34 AS |
688 | /* We count the number of PC relative relocations we have |
689 | entered for this symbol, so that we can discard them | |
690 | again if, in the -Bsymbolic case, the symbol is later | |
691 | defined by a regular object, or, in the normal shared | |
692 | case, the symbol is forced to be local. Note that this | |
693 | function is only called if we are using an m68kelf linker | |
694 | hash table, which means that h is really a pointer to an | |
252b5132 | 695 | elf_m68k_link_hash_entry. */ |
b6152c34 AS |
696 | if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8 |
697 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
698 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32) | |
252b5132 | 699 | { |
252b5132 | 700 | struct elf_m68k_pcrel_relocs_copied *p; |
b6152c34 AS |
701 | struct elf_m68k_pcrel_relocs_copied **head; |
702 | ||
703 | if (h != NULL) | |
704 | { | |
705 | struct elf_m68k_link_hash_entry *eh | |
0cca5f05 | 706 | = elf_m68k_hash_entry (h); |
b6152c34 AS |
707 | head = &eh->pcrel_relocs_copied; |
708 | } | |
709 | else | |
710 | { | |
711 | asection *s; | |
712 | s = (bfd_section_from_r_symndx | |
713 | (abfd, &elf_m68k_hash_table (info)->sym_sec, | |
714 | sec, r_symndx)); | |
715 | if (s == NULL) | |
716 | return FALSE; | |
252b5132 | 717 | |
b6152c34 AS |
718 | head = ((struct elf_m68k_pcrel_relocs_copied **) |
719 | &elf_section_data (s)->local_dynrel); | |
720 | } | |
252b5132 | 721 | |
b6152c34 | 722 | for (p = *head; p != NULL; p = p->next) |
252b5132 RH |
723 | if (p->section == sreloc) |
724 | break; | |
725 | ||
726 | if (p == NULL) | |
727 | { | |
728 | p = ((struct elf_m68k_pcrel_relocs_copied *) | |
dc810e39 | 729 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
252b5132 | 730 | if (p == NULL) |
b34976b6 | 731 | return FALSE; |
b6152c34 AS |
732 | p->next = *head; |
733 | *head = p; | |
252b5132 RH |
734 | p->section = sreloc; |
735 | p->count = 0; | |
736 | } | |
737 | ||
738 | ++p->count; | |
739 | } | |
740 | } | |
741 | ||
742 | break; | |
743 | ||
744 | /* This relocation describes the C++ object vtable hierarchy. | |
745 | Reconstruct it for later use during GC. */ | |
746 | case R_68K_GNU_VTINHERIT: | |
c152c796 | 747 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 748 | return FALSE; |
252b5132 RH |
749 | break; |
750 | ||
751 | /* This relocation describes which C++ vtable entries are actually | |
752 | used. Record for later use during GC. */ | |
753 | case R_68K_GNU_VTENTRY: | |
c152c796 | 754 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 755 | return FALSE; |
252b5132 RH |
756 | break; |
757 | ||
758 | default: | |
759 | break; | |
760 | } | |
761 | } | |
762 | ||
b34976b6 | 763 | return TRUE; |
252b5132 RH |
764 | } |
765 | ||
766 | /* Return the section that should be marked against GC for a given | |
767 | relocation. */ | |
768 | ||
769 | static asection * | |
1e2f5b6e AM |
770 | elf_m68k_gc_mark_hook (sec, info, rel, h, sym) |
771 | asection *sec; | |
121089cb | 772 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
773 | Elf_Internal_Rela *rel; |
774 | struct elf_link_hash_entry *h; | |
775 | Elf_Internal_Sym *sym; | |
776 | { | |
777 | if (h != NULL) | |
778 | { | |
779 | switch (ELF32_R_TYPE (rel->r_info)) | |
780 | { | |
781 | case R_68K_GNU_VTINHERIT: | |
782 | case R_68K_GNU_VTENTRY: | |
783 | break; | |
784 | ||
785 | default: | |
786 | switch (h->root.type) | |
787 | { | |
788 | default: | |
789 | break; | |
790 | ||
791 | case bfd_link_hash_defined: | |
792 | case bfd_link_hash_defweak: | |
793 | return h->root.u.def.section; | |
794 | ||
795 | case bfd_link_hash_common: | |
796 | return h->root.u.c.p->section; | |
797 | } | |
798 | } | |
799 | } | |
800 | else | |
1e2f5b6e | 801 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
802 | |
803 | return NULL; | |
804 | } | |
805 | ||
806 | /* Update the got entry reference counts for the section being removed. */ | |
807 | ||
b34976b6 | 808 | static bfd_boolean |
252b5132 RH |
809 | elf_m68k_gc_sweep_hook (abfd, info, sec, relocs) |
810 | bfd *abfd; | |
811 | struct bfd_link_info *info; | |
812 | asection *sec; | |
813 | const Elf_Internal_Rela *relocs; | |
814 | { | |
815 | Elf_Internal_Shdr *symtab_hdr; | |
816 | struct elf_link_hash_entry **sym_hashes; | |
817 | bfd_signed_vma *local_got_refcounts; | |
818 | const Elf_Internal_Rela *rel, *relend; | |
252b5132 | 819 | bfd *dynobj; |
dd5724d5 AM |
820 | asection *sgot; |
821 | asection *srelgot; | |
252b5132 | 822 | |
252b5132 | 823 | dynobj = elf_hash_table (info)->dynobj; |
dd5724d5 | 824 | if (dynobj == NULL) |
b34976b6 | 825 | return TRUE; |
dd5724d5 | 826 | |
4f075348 KH |
827 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
828 | sym_hashes = elf_sym_hashes (abfd); | |
829 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
830 | ||
dd5724d5 AM |
831 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
832 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
252b5132 RH |
833 | |
834 | relend = relocs + sec->reloc_count; | |
835 | for (rel = relocs; rel < relend; rel++) | |
836 | { | |
4f075348 KH |
837 | unsigned long r_symndx; |
838 | struct elf_link_hash_entry *h; | |
839 | ||
252b5132 RH |
840 | switch (ELF32_R_TYPE (rel->r_info)) |
841 | { | |
842 | case R_68K_GOT8: | |
843 | case R_68K_GOT16: | |
844 | case R_68K_GOT32: | |
845 | case R_68K_GOT8O: | |
846 | case R_68K_GOT16O: | |
847 | case R_68K_GOT32O: | |
848 | r_symndx = ELF32_R_SYM (rel->r_info); | |
849 | if (r_symndx >= symtab_hdr->sh_info) | |
850 | { | |
851 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
852 | if (h->got.refcount > 0) | |
853 | { | |
854 | --h->got.refcount; | |
855 | if (h->got.refcount == 0) | |
856 | { | |
857 | /* We don't need the .got entry any more. */ | |
eea6121a AM |
858 | sgot->size -= 4; |
859 | srelgot->size -= sizeof (Elf32_External_Rela); | |
252b5132 RH |
860 | } |
861 | } | |
862 | } | |
dd5724d5 | 863 | else if (local_got_refcounts != NULL) |
252b5132 RH |
864 | { |
865 | if (local_got_refcounts[r_symndx] > 0) | |
866 | { | |
867 | --local_got_refcounts[r_symndx]; | |
868 | if (local_got_refcounts[r_symndx] == 0) | |
869 | { | |
870 | /* We don't need the .got entry any more. */ | |
eea6121a | 871 | sgot->size -= 4; |
252b5132 | 872 | if (info->shared) |
eea6121a | 873 | srelgot->size -= sizeof (Elf32_External_Rela); |
252b5132 RH |
874 | } |
875 | } | |
876 | } | |
877 | break; | |
878 | ||
879 | case R_68K_PLT8: | |
880 | case R_68K_PLT16: | |
881 | case R_68K_PLT32: | |
882 | case R_68K_PLT8O: | |
883 | case R_68K_PLT16O: | |
884 | case R_68K_PLT32O: | |
885 | case R_68K_PC8: | |
886 | case R_68K_PC16: | |
887 | case R_68K_PC32: | |
888 | case R_68K_8: | |
889 | case R_68K_16: | |
890 | case R_68K_32: | |
891 | r_symndx = ELF32_R_SYM (rel->r_info); | |
892 | if (r_symndx >= symtab_hdr->sh_info) | |
893 | { | |
894 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
895 | if (h->plt.refcount > 0) | |
896 | --h->plt.refcount; | |
897 | } | |
898 | break; | |
899 | ||
900 | default: | |
901 | break; | |
902 | } | |
903 | } | |
904 | ||
b34976b6 | 905 | return TRUE; |
252b5132 RH |
906 | } |
907 | ||
252b5132 RH |
908 | /* Adjust a symbol defined by a dynamic object and referenced by a |
909 | regular object. The current definition is in some section of the | |
910 | dynamic object, but we're not including those sections. We have to | |
911 | change the definition to something the rest of the link can | |
912 | understand. */ | |
913 | ||
b34976b6 | 914 | static bfd_boolean |
252b5132 RH |
915 | elf_m68k_adjust_dynamic_symbol (info, h) |
916 | struct bfd_link_info *info; | |
917 | struct elf_link_hash_entry *h; | |
918 | { | |
919 | bfd *dynobj; | |
920 | asection *s; | |
921 | unsigned int power_of_two; | |
922 | ||
923 | dynobj = elf_hash_table (info)->dynobj; | |
924 | ||
925 | /* Make sure we know what is going on here. */ | |
926 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 927 | && (h->needs_plt |
f6e332e6 | 928 | || h->u.weakdef != NULL |
f5385ebf AM |
929 | || (h->def_dynamic |
930 | && h->ref_regular | |
931 | && !h->def_regular))); | |
252b5132 RH |
932 | |
933 | /* If this is a function, put it in the procedure linkage table. We | |
934 | will fill in the contents of the procedure linkage table later, | |
935 | when we know the address of the .got section. */ | |
936 | if (h->type == STT_FUNC | |
f5385ebf | 937 | || h->needs_plt) |
252b5132 | 938 | { |
9dfe8738 AS |
939 | if ((h->plt.refcount <= 0 |
940 | || SYMBOL_CALLS_LOCAL (info, h) | |
941 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
942 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
943 | /* We must always create the plt entry if it was referenced |
944 | by a PLTxxO relocation. In this case we already recorded | |
945 | it as a dynamic symbol. */ | |
946 | && h->dynindx == -1) | |
947 | { | |
948 | /* This case can occur if we saw a PLTxx reloc in an input | |
949 | file, but the symbol was never referred to by a dynamic | |
9dfe8738 AS |
950 | object, or if all references were garbage collected. In |
951 | such a case, we don't actually need to build a procedure | |
952 | linkage table, and we can just do a PCxx reloc instead. */ | |
252b5132 | 953 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 954 | h->needs_plt = 0; |
b34976b6 | 955 | return TRUE; |
252b5132 RH |
956 | } |
957 | ||
958 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 959 | if (h->dynindx == -1 |
f5385ebf | 960 | && !h->forced_local) |
252b5132 | 961 | { |
c152c796 | 962 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 963 | return FALSE; |
252b5132 RH |
964 | } |
965 | ||
966 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
967 | BFD_ASSERT (s != NULL); | |
968 | ||
969 | /* If this is the first .plt entry, make room for the special | |
970 | first entry. */ | |
eea6121a | 971 | if (s->size == 0) |
70f06c4a AS |
972 | { |
973 | if (CPU32_FLAG (dynobj)) | |
eea6121a | 974 | s->size += PLT_CPU32_ENTRY_SIZE; |
70f06c4a | 975 | else |
eea6121a | 976 | s->size += PLT_ENTRY_SIZE; |
70f06c4a | 977 | } |
252b5132 RH |
978 | |
979 | /* If this symbol is not defined in a regular file, and we are | |
980 | not generating a shared library, then set the symbol to this | |
981 | location in the .plt. This is required to make function | |
982 | pointers compare as equal between the normal executable and | |
983 | the shared library. */ | |
984 | if (!info->shared | |
f5385ebf | 985 | && !h->def_regular) |
252b5132 RH |
986 | { |
987 | h->root.u.def.section = s; | |
eea6121a | 988 | h->root.u.def.value = s->size; |
252b5132 RH |
989 | } |
990 | ||
eea6121a | 991 | h->plt.offset = s->size; |
252b5132 RH |
992 | |
993 | /* Make room for this entry. */ | |
9e1281c7 | 994 | if (CPU32_FLAG (dynobj)) |
eea6121a | 995 | s->size += PLT_CPU32_ENTRY_SIZE; |
9e1281c7 | 996 | else |
eea6121a | 997 | s->size += PLT_ENTRY_SIZE; |
252b5132 RH |
998 | |
999 | /* We also need to make an entry in the .got.plt section, which | |
1000 | will be placed in the .got section by the linker script. */ | |
252b5132 RH |
1001 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
1002 | BFD_ASSERT (s != NULL); | |
eea6121a | 1003 | s->size += 4; |
252b5132 RH |
1004 | |
1005 | /* We also need to make an entry in the .rela.plt section. */ | |
252b5132 RH |
1006 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
1007 | BFD_ASSERT (s != NULL); | |
eea6121a | 1008 | s->size += sizeof (Elf32_External_Rela); |
252b5132 | 1009 | |
b34976b6 | 1010 | return TRUE; |
252b5132 RH |
1011 | } |
1012 | ||
1013 | /* Reinitialize the plt offset now that it is not used as a reference | |
1014 | count any more. */ | |
1015 | h->plt.offset = (bfd_vma) -1; | |
1016 | ||
1017 | /* If this is a weak symbol, and there is a real definition, the | |
1018 | processor independent code will have arranged for us to see the | |
1019 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1020 | if (h->u.weakdef != NULL) |
252b5132 | 1021 | { |
f6e332e6 AM |
1022 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1023 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1024 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1025 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1026 | return TRUE; |
252b5132 RH |
1027 | } |
1028 | ||
1029 | /* This is a reference to a symbol defined by a dynamic object which | |
1030 | is not a function. */ | |
1031 | ||
1032 | /* If we are creating a shared library, we must presume that the | |
1033 | only references to the symbol are via the global offset table. | |
1034 | For such cases we need not do anything here; the relocations will | |
1035 | be handled correctly by relocate_section. */ | |
1036 | if (info->shared) | |
b34976b6 | 1037 | return TRUE; |
252b5132 RH |
1038 | |
1039 | /* We must allocate the symbol in our .dynbss section, which will | |
1040 | become part of the .bss section of the executable. There will be | |
1041 | an entry for this symbol in the .dynsym section. The dynamic | |
1042 | object will contain position independent code, so all references | |
1043 | from the dynamic object to this symbol will go through the global | |
1044 | offset table. The dynamic linker will use the .dynsym entry to | |
1045 | determine the address it must put in the global offset table, so | |
1046 | both the dynamic object and the regular object will refer to the | |
1047 | same memory location for the variable. */ | |
1048 | ||
1049 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1050 | BFD_ASSERT (s != NULL); | |
1051 | ||
1052 | /* We must generate a R_68K_COPY reloc to tell the dynamic linker to | |
1053 | copy the initial value out of the dynamic object and into the | |
1054 | runtime process image. We need to remember the offset into the | |
1055 | .rela.bss section we are going to use. */ | |
1056 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1057 | { | |
1058 | asection *srel; | |
1059 | ||
1060 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1061 | BFD_ASSERT (srel != NULL); | |
eea6121a | 1062 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1063 | h->needs_copy = 1; |
252b5132 RH |
1064 | } |
1065 | ||
1066 | /* We need to figure out the alignment required for this symbol. I | |
1067 | have no idea how ELF linkers handle this. */ | |
1068 | power_of_two = bfd_log2 (h->size); | |
1069 | if (power_of_two > 3) | |
1070 | power_of_two = 3; | |
1071 | ||
1072 | /* Apply the required alignment. */ | |
eea6121a | 1073 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
252b5132 RH |
1074 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
1075 | { | |
1076 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 1077 | return FALSE; |
252b5132 RH |
1078 | } |
1079 | ||
1080 | /* Define the symbol as being at this point in the section. */ | |
1081 | h->root.u.def.section = s; | |
eea6121a | 1082 | h->root.u.def.value = s->size; |
252b5132 RH |
1083 | |
1084 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 1085 | s->size += h->size; |
252b5132 | 1086 | |
b34976b6 | 1087 | return TRUE; |
252b5132 RH |
1088 | } |
1089 | ||
1090 | /* Set the sizes of the dynamic sections. */ | |
1091 | ||
b34976b6 | 1092 | static bfd_boolean |
252b5132 | 1093 | elf_m68k_size_dynamic_sections (output_bfd, info) |
aa91b392 | 1094 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1095 | struct bfd_link_info *info; |
1096 | { | |
1097 | bfd *dynobj; | |
1098 | asection *s; | |
b34976b6 AM |
1099 | bfd_boolean plt; |
1100 | bfd_boolean relocs; | |
252b5132 RH |
1101 | |
1102 | dynobj = elf_hash_table (info)->dynobj; | |
1103 | BFD_ASSERT (dynobj != NULL); | |
1104 | ||
1105 | if (elf_hash_table (info)->dynamic_sections_created) | |
1106 | { | |
1107 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1108 | if (info->executable) |
252b5132 RH |
1109 | { |
1110 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1111 | BFD_ASSERT (s != NULL); | |
eea6121a | 1112 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
1113 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1114 | } | |
1115 | } | |
1116 | else | |
1117 | { | |
1118 | /* We may have created entries in the .rela.got section. | |
1119 | However, if we are not creating the dynamic sections, we will | |
1120 | not actually use these entries. Reset the size of .rela.got, | |
1121 | which will cause it to get stripped from the output file | |
1122 | below. */ | |
1123 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1124 | if (s != NULL) | |
eea6121a | 1125 | s->size = 0; |
252b5132 RH |
1126 | } |
1127 | ||
b6152c34 AS |
1128 | /* If this is a -Bsymbolic shared link, then we need to discard all |
1129 | PC relative relocs against symbols defined in a regular object. | |
1130 | For the normal shared case we discard the PC relative relocs | |
1131 | against symbols that have become local due to visibility changes. | |
1132 | We allocated space for them in the check_relocs routine, but we | |
1133 | will not fill them in in the relocate_section routine. */ | |
1134 | if (info->shared) | |
0cca5f05 AS |
1135 | elf_link_hash_traverse (elf_hash_table (info), |
1136 | elf_m68k_discard_copies, | |
1137 | (PTR) info); | |
252b5132 RH |
1138 | |
1139 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1140 | determined the sizes of the various dynamic sections. Allocate | |
1141 | memory for them. */ | |
b34976b6 AM |
1142 | plt = FALSE; |
1143 | relocs = FALSE; | |
252b5132 RH |
1144 | for (s = dynobj->sections; s != NULL; s = s->next) |
1145 | { | |
1146 | const char *name; | |
b34976b6 | 1147 | bfd_boolean strip; |
252b5132 RH |
1148 | |
1149 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1150 | continue; | |
1151 | ||
1152 | /* It's OK to base decisions on the section name, because none | |
1153 | of the dynobj section names depend upon the input files. */ | |
1154 | name = bfd_get_section_name (dynobj, s); | |
1155 | ||
b34976b6 | 1156 | strip = FALSE; |
252b5132 RH |
1157 | |
1158 | if (strcmp (name, ".plt") == 0) | |
1159 | { | |
eea6121a | 1160 | if (s->size == 0) |
252b5132 RH |
1161 | { |
1162 | /* Strip this section if we don't need it; see the | |
1163 | comment below. */ | |
b34976b6 | 1164 | strip = TRUE; |
252b5132 RH |
1165 | } |
1166 | else | |
1167 | { | |
1168 | /* Remember whether there is a PLT. */ | |
b34976b6 | 1169 | plt = TRUE; |
252b5132 RH |
1170 | } |
1171 | } | |
1172 | else if (strncmp (name, ".rela", 5) == 0) | |
1173 | { | |
eea6121a | 1174 | if (s->size == 0) |
252b5132 RH |
1175 | { |
1176 | /* If we don't need this section, strip it from the | |
1177 | output file. This is mostly to handle .rela.bss and | |
1178 | .rela.plt. We must create both sections in | |
1179 | create_dynamic_sections, because they must be created | |
1180 | before the linker maps input sections to output | |
1181 | sections. The linker does that before | |
1182 | adjust_dynamic_symbol is called, and it is that | |
1183 | function which decides whether anything needs to go | |
1184 | into these sections. */ | |
b34976b6 | 1185 | strip = TRUE; |
252b5132 RH |
1186 | } |
1187 | else | |
1188 | { | |
b34976b6 | 1189 | relocs = TRUE; |
252b5132 RH |
1190 | |
1191 | /* We use the reloc_count field as a counter if we need | |
1192 | to copy relocs into the output file. */ | |
1193 | s->reloc_count = 0; | |
1194 | } | |
1195 | } | |
1196 | else if (strncmp (name, ".got", 4) != 0) | |
1197 | { | |
1198 | /* It's not one of our sections, so don't allocate space. */ | |
1199 | continue; | |
1200 | } | |
1201 | ||
1202 | if (strip) | |
1203 | { | |
7f8d5fc9 | 1204 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
1205 | continue; |
1206 | } | |
1207 | ||
1208 | /* Allocate memory for the section contents. */ | |
7a9af8c4 NC |
1209 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
1210 | Unused entries should be reclaimed before the section's contents | |
1211 | are written out, but at the moment this does not happen. Thus in | |
1212 | order to prevent writing out garbage, we initialise the section's | |
1213 | contents to zero. */ | |
eea6121a AM |
1214 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
1215 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 1216 | return FALSE; |
252b5132 RH |
1217 | } |
1218 | ||
1219 | if (elf_hash_table (info)->dynamic_sections_created) | |
1220 | { | |
1221 | /* Add some entries to the .dynamic section. We fill in the | |
1222 | values later, in elf_m68k_finish_dynamic_sections, but we | |
1223 | must add the entries now so that we get the correct size for | |
1224 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1225 | dynamic linker and used by the debugger. */ | |
dc810e39 | 1226 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1227 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 1228 | |
252b5132 RH |
1229 | if (!info->shared) |
1230 | { | |
dc810e39 | 1231 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1232 | return FALSE; |
252b5132 RH |
1233 | } |
1234 | ||
1235 | if (plt) | |
1236 | { | |
dc810e39 AM |
1237 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1238 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1239 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1240 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1241 | return FALSE; |
252b5132 RH |
1242 | } |
1243 | ||
1244 | if (relocs) | |
1245 | { | |
dc810e39 AM |
1246 | if (!add_dynamic_entry (DT_RELA, 0) |
1247 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1248 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1249 | return FALSE; |
252b5132 RH |
1250 | } |
1251 | ||
aa91b392 | 1252 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 1253 | { |
dc810e39 | 1254 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1255 | return FALSE; |
252b5132 RH |
1256 | } |
1257 | } | |
dc810e39 | 1258 | #undef add_dynamic_entry |
252b5132 | 1259 | |
b34976b6 | 1260 | return TRUE; |
252b5132 RH |
1261 | } |
1262 | ||
0cca5f05 | 1263 | /* This function is called via elf_link_hash_traverse if we are |
b6152c34 AS |
1264 | creating a shared object. In the -Bsymbolic case it discards the |
1265 | space allocated to copy PC relative relocs against symbols which | |
3e829b4a | 1266 | are defined in regular objects. For the normal shared case, it |
b6152c34 AS |
1267 | discards space for pc-relative relocs that have become local due to |
1268 | symbol visibility changes. We allocated space for them in the | |
1269 | check_relocs routine, but we won't fill them in in the | |
3e829b4a AS |
1270 | relocate_section routine. |
1271 | ||
1272 | We also check whether any of the remaining relocations apply | |
1273 | against a readonly section, and set the DF_TEXTREL flag in this | |
1274 | case. */ | |
252b5132 | 1275 | |
b34976b6 | 1276 | static bfd_boolean |
b6152c34 | 1277 | elf_m68k_discard_copies (h, inf) |
0cca5f05 | 1278 | struct elf_link_hash_entry *h; |
b6152c34 | 1279 | PTR inf; |
252b5132 | 1280 | { |
b6152c34 | 1281 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
252b5132 RH |
1282 | struct elf_m68k_pcrel_relocs_copied *s; |
1283 | ||
0cca5f05 AS |
1284 | if (h->root.type == bfd_link_hash_warning) |
1285 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e92d460e | 1286 | |
f5385ebf | 1287 | if (!h->def_regular |
b6152c34 | 1288 | || (!info->symbolic |
f5385ebf | 1289 | && !h->forced_local)) |
3e829b4a AS |
1290 | { |
1291 | if ((info->flags & DF_TEXTREL) == 0) | |
1292 | { | |
1293 | /* Look for relocations against read-only sections. */ | |
0cca5f05 AS |
1294 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
1295 | s != NULL; | |
1296 | s = s->next) | |
3e829b4a AS |
1297 | if ((s->section->flags & SEC_READONLY) != 0) |
1298 | { | |
1299 | info->flags |= DF_TEXTREL; | |
1300 | break; | |
1301 | } | |
1302 | } | |
0cca5f05 | 1303 | |
3e829b4a AS |
1304 | return TRUE; |
1305 | } | |
252b5132 | 1306 | |
0cca5f05 AS |
1307 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
1308 | s != NULL; | |
1309 | s = s->next) | |
eea6121a | 1310 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
252b5132 | 1311 | |
b34976b6 | 1312 | return TRUE; |
252b5132 RH |
1313 | } |
1314 | ||
1315 | /* Relocate an M68K ELF section. */ | |
1316 | ||
b34976b6 | 1317 | static bfd_boolean |
252b5132 RH |
1318 | elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section, |
1319 | contents, relocs, local_syms, local_sections) | |
1320 | bfd *output_bfd; | |
1321 | struct bfd_link_info *info; | |
1322 | bfd *input_bfd; | |
1323 | asection *input_section; | |
1324 | bfd_byte *contents; | |
1325 | Elf_Internal_Rela *relocs; | |
1326 | Elf_Internal_Sym *local_syms; | |
1327 | asection **local_sections; | |
1328 | { | |
1329 | bfd *dynobj; | |
1330 | Elf_Internal_Shdr *symtab_hdr; | |
1331 | struct elf_link_hash_entry **sym_hashes; | |
1332 | bfd_vma *local_got_offsets; | |
1333 | asection *sgot; | |
1334 | asection *splt; | |
1335 | asection *sreloc; | |
1336 | Elf_Internal_Rela *rel; | |
1337 | Elf_Internal_Rela *relend; | |
1338 | ||
1049f94e | 1339 | if (info->relocatable) |
b34976b6 | 1340 | return TRUE; |
b491616a | 1341 | |
252b5132 RH |
1342 | dynobj = elf_hash_table (info)->dynobj; |
1343 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1344 | sym_hashes = elf_sym_hashes (input_bfd); | |
1345 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1346 | ||
1347 | sgot = NULL; | |
1348 | splt = NULL; | |
1349 | sreloc = NULL; | |
1350 | ||
1351 | rel = relocs; | |
1352 | relend = relocs + input_section->reloc_count; | |
1353 | for (; rel < relend; rel++) | |
1354 | { | |
1355 | int r_type; | |
1356 | reloc_howto_type *howto; | |
1357 | unsigned long r_symndx; | |
1358 | struct elf_link_hash_entry *h; | |
1359 | Elf_Internal_Sym *sym; | |
1360 | asection *sec; | |
1361 | bfd_vma relocation; | |
44f745a6 | 1362 | bfd_boolean unresolved_reloc; |
252b5132 RH |
1363 | bfd_reloc_status_type r; |
1364 | ||
1365 | r_type = ELF32_R_TYPE (rel->r_info); | |
1366 | if (r_type < 0 || r_type >= (int) R_68K_max) | |
1367 | { | |
1368 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1369 | return FALSE; |
252b5132 RH |
1370 | } |
1371 | howto = howto_table + r_type; | |
1372 | ||
1373 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1374 | ||
252b5132 RH |
1375 | h = NULL; |
1376 | sym = NULL; | |
1377 | sec = NULL; | |
44f745a6 | 1378 | unresolved_reloc = FALSE; |
560e09e9 | 1379 | |
252b5132 RH |
1380 | if (r_symndx < symtab_hdr->sh_info) |
1381 | { | |
1382 | sym = local_syms + r_symndx; | |
1383 | sec = local_sections[r_symndx]; | |
8517fae7 | 1384 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
1385 | } |
1386 | else | |
1387 | { | |
560e09e9 NC |
1388 | bfd_boolean warned; |
1389 | ||
b2a8e766 AM |
1390 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1391 | r_symndx, symtab_hdr, sym_hashes, | |
1392 | h, sec, relocation, | |
1393 | unresolved_reloc, warned); | |
252b5132 RH |
1394 | } |
1395 | ||
1396 | switch (r_type) | |
1397 | { | |
1398 | case R_68K_GOT8: | |
1399 | case R_68K_GOT16: | |
1400 | case R_68K_GOT32: | |
1401 | /* Relocation is to the address of the entry for this symbol | |
1402 | in the global offset table. */ | |
1403 | if (h != NULL | |
1404 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1405 | break; | |
1406 | /* Fall through. */ | |
1407 | case R_68K_GOT8O: | |
1408 | case R_68K_GOT16O: | |
1409 | case R_68K_GOT32O: | |
1410 | /* Relocation is the offset of the entry for this symbol in | |
1411 | the global offset table. */ | |
1412 | ||
1413 | { | |
1414 | bfd_vma off; | |
1415 | ||
1416 | if (sgot == NULL) | |
1417 | { | |
1418 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1419 | BFD_ASSERT (sgot != NULL); | |
1420 | } | |
1421 | ||
1422 | if (h != NULL) | |
1423 | { | |
a5ad465a AS |
1424 | bfd_boolean dyn; |
1425 | ||
252b5132 RH |
1426 | off = h->got.offset; |
1427 | BFD_ASSERT (off != (bfd_vma) -1); | |
1428 | ||
a5ad465a AS |
1429 | dyn = elf_hash_table (info)->dynamic_sections_created; |
1430 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
252b5132 | 1431 | || (info->shared |
a5ad465a AS |
1432 | && (info->symbolic |
1433 | || h->dynindx == -1 | |
f5385ebf AM |
1434 | || h->forced_local) |
1435 | && h->def_regular)) | |
252b5132 RH |
1436 | { |
1437 | /* This is actually a static link, or it is a | |
1438 | -Bsymbolic link and the symbol is defined | |
1439 | locally, or the symbol was forced to be local | |
1440 | because of a version file.. We must initialize | |
1441 | this entry in the global offset table. Since | |
1442 | the offset must always be a multiple of 4, we | |
1443 | use the least significant bit to record whether | |
1444 | we have initialized it already. | |
1445 | ||
1446 | When doing a dynamic link, we create a .rela.got | |
1447 | relocation entry to initialize the value. This | |
1448 | is done in the finish_dynamic_symbol routine. */ | |
1449 | if ((off & 1) != 0) | |
1450 | off &= ~1; | |
1451 | else | |
1452 | { | |
1453 | bfd_put_32 (output_bfd, relocation, | |
1454 | sgot->contents + off); | |
1455 | h->got.offset |= 1; | |
1456 | } | |
1457 | } | |
44f745a6 AS |
1458 | else |
1459 | unresolved_reloc = FALSE; | |
252b5132 RH |
1460 | } |
1461 | else | |
1462 | { | |
1463 | BFD_ASSERT (local_got_offsets != NULL | |
1464 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1465 | ||
1466 | off = local_got_offsets[r_symndx]; | |
1467 | ||
1468 | /* The offset must always be a multiple of 4. We use | |
1469 | the least significant bit to record whether we have | |
1470 | already generated the necessary reloc. */ | |
1471 | if ((off & 1) != 0) | |
1472 | off &= ~1; | |
1473 | else | |
1474 | { | |
1475 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1476 | ||
1477 | if (info->shared) | |
1478 | { | |
947216bf | 1479 | asection *s; |
252b5132 | 1480 | Elf_Internal_Rela outrel; |
947216bf | 1481 | bfd_byte *loc; |
252b5132 | 1482 | |
947216bf AM |
1483 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
1484 | BFD_ASSERT (s != NULL); | |
252b5132 RH |
1485 | |
1486 | outrel.r_offset = (sgot->output_section->vma | |
1487 | + sgot->output_offset | |
1488 | + off); | |
1489 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
1490 | outrel.r_addend = relocation; | |
947216bf AM |
1491 | loc = s->contents; |
1492 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1493 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1494 | } |
1495 | ||
1496 | local_got_offsets[r_symndx] |= 1; | |
1497 | } | |
1498 | } | |
1499 | ||
1500 | relocation = sgot->output_offset + off; | |
1501 | if (r_type == R_68K_GOT8O | |
1502 | || r_type == R_68K_GOT16O | |
1503 | || r_type == R_68K_GOT32O) | |
1504 | { | |
1505 | /* This relocation does not use the addend. */ | |
1506 | rel->r_addend = 0; | |
1507 | } | |
1508 | else | |
1509 | relocation += sgot->output_section->vma; | |
1510 | } | |
1511 | break; | |
1512 | ||
1513 | case R_68K_PLT8: | |
1514 | case R_68K_PLT16: | |
1515 | case R_68K_PLT32: | |
1516 | /* Relocation is to the entry for this symbol in the | |
1517 | procedure linkage table. */ | |
1518 | ||
1519 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1520 | without using the procedure linkage table. */ | |
1521 | if (h == NULL) | |
1522 | break; | |
1523 | ||
1524 | if (h->plt.offset == (bfd_vma) -1 | |
1525 | || !elf_hash_table (info)->dynamic_sections_created) | |
1526 | { | |
1527 | /* We didn't make a PLT entry for this symbol. This | |
1528 | happens when statically linking PIC code, or when | |
1529 | using -Bsymbolic. */ | |
1530 | break; | |
1531 | } | |
1532 | ||
1533 | if (splt == NULL) | |
1534 | { | |
1535 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1536 | BFD_ASSERT (splt != NULL); | |
1537 | } | |
1538 | ||
1539 | relocation = (splt->output_section->vma | |
1540 | + splt->output_offset | |
1541 | + h->plt.offset); | |
44f745a6 | 1542 | unresolved_reloc = FALSE; |
252b5132 RH |
1543 | break; |
1544 | ||
1545 | case R_68K_PLT8O: | |
1546 | case R_68K_PLT16O: | |
1547 | case R_68K_PLT32O: | |
1548 | /* Relocation is the offset of the entry for this symbol in | |
1549 | the procedure linkage table. */ | |
1550 | BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1); | |
1551 | ||
1552 | if (splt == NULL) | |
1553 | { | |
1554 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1555 | BFD_ASSERT (splt != NULL); | |
1556 | } | |
1557 | ||
1558 | relocation = h->plt.offset; | |
44f745a6 | 1559 | unresolved_reloc = FALSE; |
252b5132 RH |
1560 | |
1561 | /* This relocation does not use the addend. */ | |
1562 | rel->r_addend = 0; | |
1563 | ||
1564 | break; | |
1565 | ||
1566 | case R_68K_PC8: | |
1567 | case R_68K_PC16: | |
1568 | case R_68K_PC32: | |
b6152c34 AS |
1569 | if (h == NULL |
1570 | || (info->shared | |
f5385ebf | 1571 | && h->forced_local)) |
252b5132 RH |
1572 | break; |
1573 | /* Fall through. */ | |
1574 | case R_68K_8: | |
1575 | case R_68K_16: | |
1576 | case R_68K_32: | |
1577 | if (info->shared | |
ec338859 | 1578 | && r_symndx != 0 |
252b5132 | 1579 | && (input_section->flags & SEC_ALLOC) != 0 |
d2ff124f AS |
1580 | && (h == NULL |
1581 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1582 | || h->root.type != bfd_link_hash_undefweak) | |
252b5132 RH |
1583 | && ((r_type != R_68K_PC8 |
1584 | && r_type != R_68K_PC16 | |
1585 | && r_type != R_68K_PC32) | |
d2ff124f AS |
1586 | || (h != NULL |
1587 | && h->dynindx != -1 | |
1588 | && (!info->symbolic | |
f5385ebf | 1589 | || !h->def_regular)))) |
252b5132 RH |
1590 | { |
1591 | Elf_Internal_Rela outrel; | |
947216bf | 1592 | bfd_byte *loc; |
b34976b6 | 1593 | bfd_boolean skip, relocate; |
252b5132 RH |
1594 | |
1595 | /* When generating a shared object, these relocations | |
1596 | are copied into the output file to be resolved at run | |
1597 | time. */ | |
1598 | ||
b34976b6 AM |
1599 | skip = FALSE; |
1600 | relocate = FALSE; | |
252b5132 | 1601 | |
c629eae0 JJ |
1602 | outrel.r_offset = |
1603 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1604 | rel->r_offset); | |
1605 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1606 | skip = TRUE; |
0bb2d96a | 1607 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1608 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
1609 | outrel.r_offset += (input_section->output_section->vma |
1610 | + input_section->output_offset); | |
1611 | ||
1612 | if (skip) | |
0bb2d96a | 1613 | memset (&outrel, 0, sizeof outrel); |
252b5132 | 1614 | else if (h != NULL |
d2ff124f AS |
1615 | && h->dynindx != -1 |
1616 | && (r_type == R_68K_PC8 | |
1617 | || r_type == R_68K_PC16 | |
1618 | || r_type == R_68K_PC32 | |
1619 | || !info->shared | |
1620 | || !info->symbolic | |
f5385ebf | 1621 | || !h->def_regular)) |
252b5132 | 1622 | { |
252b5132 | 1623 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
d2ff124f | 1624 | outrel.r_addend = rel->r_addend; |
252b5132 RH |
1625 | } |
1626 | else | |
1627 | { | |
d2ff124f | 1628 | /* This symbol is local, or marked to become local. */ |
252b5132 RH |
1629 | if (r_type == R_68K_32) |
1630 | { | |
b34976b6 | 1631 | relocate = TRUE; |
252b5132 RH |
1632 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); |
1633 | outrel.r_addend = relocation + rel->r_addend; | |
1634 | } | |
1635 | else | |
1636 | { | |
1637 | long indx; | |
1638 | ||
8517fae7 | 1639 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
1640 | indx = 0; |
1641 | else if (sec == NULL || sec->owner == NULL) | |
1642 | { | |
1643 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1644 | return FALSE; |
252b5132 RH |
1645 | } |
1646 | else | |
1647 | { | |
1648 | asection *osec; | |
1649 | ||
1650 | osec = sec->output_section; | |
1651 | indx = elf_section_data (osec)->dynindx; | |
1652 | BFD_ASSERT (indx > 0); | |
1653 | } | |
1654 | ||
252b5132 RH |
1655 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
1656 | outrel.r_addend = relocation + rel->r_addend; | |
1657 | } | |
1658 | } | |
1659 | ||
d2ff124f AS |
1660 | sreloc = elf_section_data (input_section)->sreloc; |
1661 | if (sreloc == NULL) | |
1662 | abort (); | |
1663 | ||
947216bf AM |
1664 | loc = sreloc->contents; |
1665 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1666 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1667 | |
1668 | /* This reloc will be computed at runtime, so there's no | |
1669 | need to do anything now, except for R_68K_32 | |
1670 | relocations that have been turned into | |
1671 | R_68K_RELATIVE. */ | |
1672 | if (!relocate) | |
1673 | continue; | |
1674 | } | |
1675 | ||
1676 | break; | |
1677 | ||
1678 | case R_68K_GNU_VTINHERIT: | |
1679 | case R_68K_GNU_VTENTRY: | |
1680 | /* These are no-ops in the end. */ | |
1681 | continue; | |
1682 | ||
1683 | default: | |
1684 | break; | |
1685 | } | |
1686 | ||
44f745a6 AS |
1687 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
1688 | because such sections are not SEC_ALLOC and thus ld.so will | |
1689 | not process them. */ | |
1690 | if (unresolved_reloc | |
1691 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1692 | && h->def_dynamic)) |
44f745a6 AS |
1693 | { |
1694 | (*_bfd_error_handler) | |
d003868e AM |
1695 | (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"), |
1696 | input_bfd, | |
1697 | input_section, | |
44f745a6 AS |
1698 | (long) rel->r_offset, |
1699 | h->root.root.string); | |
1700 | return FALSE; | |
1701 | } | |
1702 | ||
252b5132 RH |
1703 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
1704 | contents, rel->r_offset, | |
1705 | relocation, rel->r_addend); | |
1706 | ||
1707 | if (r != bfd_reloc_ok) | |
1708 | { | |
44f745a6 AS |
1709 | const char *name; |
1710 | ||
1711 | if (h != NULL) | |
1712 | name = h->root.root.string; | |
1713 | else | |
252b5132 | 1714 | { |
44f745a6 AS |
1715 | name = bfd_elf_string_from_elf_section (input_bfd, |
1716 | symtab_hdr->sh_link, | |
1717 | sym->st_name); | |
1718 | if (name == NULL) | |
1719 | return FALSE; | |
1720 | if (*name == '\0') | |
1721 | name = bfd_section_name (input_bfd, sec); | |
1722 | } | |
252b5132 | 1723 | |
44f745a6 AS |
1724 | if (r == bfd_reloc_overflow) |
1725 | { | |
1726 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
1727 | (info, (h ? &h->root : NULL), name, howto->name, |
1728 | (bfd_vma) 0, input_bfd, input_section, | |
1729 | rel->r_offset))) | |
44f745a6 AS |
1730 | return FALSE; |
1731 | } | |
1732 | else | |
1733 | { | |
1734 | (*_bfd_error_handler) | |
d003868e AM |
1735 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
1736 | input_bfd, input_section, | |
44f745a6 AS |
1737 | (long) rel->r_offset, name, (int) r); |
1738 | return FALSE; | |
252b5132 RH |
1739 | } |
1740 | } | |
1741 | } | |
1742 | ||
b34976b6 | 1743 | return TRUE; |
252b5132 RH |
1744 | } |
1745 | ||
1746 | /* Finish up dynamic symbol handling. We set the contents of various | |
1747 | dynamic sections here. */ | |
1748 | ||
b34976b6 | 1749 | static bfd_boolean |
252b5132 RH |
1750 | elf_m68k_finish_dynamic_symbol (output_bfd, info, h, sym) |
1751 | bfd *output_bfd; | |
1752 | struct bfd_link_info *info; | |
1753 | struct elf_link_hash_entry *h; | |
1754 | Elf_Internal_Sym *sym; | |
1755 | { | |
1756 | bfd *dynobj; | |
9e1281c7 | 1757 | int plt_off1, plt_off2, plt_off3; |
252b5132 RH |
1758 | |
1759 | dynobj = elf_hash_table (info)->dynobj; | |
1760 | ||
1761 | if (h->plt.offset != (bfd_vma) -1) | |
1762 | { | |
1763 | asection *splt; | |
1764 | asection *sgot; | |
1765 | asection *srela; | |
1766 | bfd_vma plt_index; | |
1767 | bfd_vma got_offset; | |
1768 | Elf_Internal_Rela rela; | |
947216bf | 1769 | bfd_byte *loc; |
252b5132 RH |
1770 | |
1771 | /* This symbol has an entry in the procedure linkage table. Set | |
1772 | it up. */ | |
1773 | ||
1774 | BFD_ASSERT (h->dynindx != -1); | |
1775 | ||
1776 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1777 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1778 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1779 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
1780 | ||
1781 | /* Get the index in the procedure linkage table which | |
1782 | corresponds to this symbol. This is the index of this symbol | |
1783 | in all the symbols for which we are making plt entries. The | |
1784 | first entry in the procedure linkage table is reserved. */ | |
9e1281c7 CM |
1785 | if ( CPU32_FLAG (output_bfd)) |
1786 | plt_index = h->plt.offset / PLT_CPU32_ENTRY_SIZE - 1; | |
1787 | else | |
1788 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
252b5132 RH |
1789 | |
1790 | /* Get the offset into the .got table of the entry that | |
1791 | corresponds to this function. Each .got entry is 4 bytes. | |
1792 | The first three are reserved. */ | |
1793 | got_offset = (plt_index + 3) * 4; | |
1794 | ||
9e1281c7 CM |
1795 | if ( CPU32_FLAG (output_bfd)) |
1796 | { | |
1797 | /* Fill in the entry in the procedure linkage table. */ | |
1798 | memcpy (splt->contents + h->plt.offset, elf_cpu32_plt_entry, | |
1799 | PLT_CPU32_ENTRY_SIZE); | |
1800 | plt_off1 = 4; | |
1801 | plt_off2 = 12; | |
1802 | plt_off3 = 18; | |
1803 | } | |
1804 | else | |
1805 | { | |
1806 | /* Fill in the entry in the procedure linkage table. */ | |
1807 | memcpy (splt->contents + h->plt.offset, elf_m68k_plt_entry, | |
1808 | PLT_ENTRY_SIZE); | |
1809 | plt_off1 = 4; | |
1810 | plt_off2 = 10; | |
1811 | plt_off3 = 16; | |
1812 | } | |
1813 | ||
252b5132 RH |
1814 | /* The offset is relative to the first extension word. */ |
1815 | bfd_put_32 (output_bfd, | |
1816 | (sgot->output_section->vma | |
1817 | + sgot->output_offset | |
1818 | + got_offset | |
1819 | - (splt->output_section->vma | |
1820 | + h->plt.offset + 2)), | |
9e1281c7 | 1821 | splt->contents + h->plt.offset + plt_off1); |
252b5132 RH |
1822 | |
1823 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
9e1281c7 CM |
1824 | splt->contents + h->plt.offset + plt_off2); |
1825 | bfd_put_32 (output_bfd, - (h->plt.offset + plt_off3), | |
1826 | splt->contents + h->plt.offset + plt_off3); | |
252b5132 RH |
1827 | |
1828 | /* Fill in the entry in the global offset table. */ | |
1829 | bfd_put_32 (output_bfd, | |
1830 | (splt->output_section->vma | |
1831 | + splt->output_offset | |
1832 | + h->plt.offset | |
1833 | + 8), | |
1834 | sgot->contents + got_offset); | |
1835 | ||
1836 | /* Fill in the entry in the .rela.plt section. */ | |
1837 | rela.r_offset = (sgot->output_section->vma | |
1838 | + sgot->output_offset | |
1839 | + got_offset); | |
1840 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT); | |
1841 | rela.r_addend = 0; | |
947216bf AM |
1842 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
1843 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 | 1844 | |
f5385ebf | 1845 | if (!h->def_regular) |
252b5132 RH |
1846 | { |
1847 | /* Mark the symbol as undefined, rather than as defined in | |
1848 | the .plt section. Leave the value alone. */ | |
1849 | sym->st_shndx = SHN_UNDEF; | |
1850 | } | |
1851 | } | |
1852 | ||
1853 | if (h->got.offset != (bfd_vma) -1) | |
1854 | { | |
1855 | asection *sgot; | |
1856 | asection *srela; | |
1857 | Elf_Internal_Rela rela; | |
947216bf | 1858 | bfd_byte *loc; |
252b5132 RH |
1859 | |
1860 | /* This symbol has an entry in the global offset table. Set it | |
1861 | up. */ | |
1862 | ||
1863 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1864 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1865 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1866 | ||
1867 | rela.r_offset = (sgot->output_section->vma | |
1868 | + sgot->output_offset | |
dc810e39 | 1869 | + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
1870 | |
1871 | /* If this is a -Bsymbolic link, and the symbol is defined | |
1872 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
1873 | the symbol was forced to be local because of a version file. | |
1874 | The entry in the global offset table will already have been | |
1875 | initialized in the relocate_section function. */ | |
1876 | if (info->shared | |
a5ad465a AS |
1877 | && (info->symbolic |
1878 | || h->dynindx == -1 | |
f5385ebf AM |
1879 | || h->forced_local) |
1880 | && h->def_regular) | |
252b5132 RH |
1881 | { |
1882 | rela.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
1883 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
1884 | (sgot->contents | |
dc810e39 | 1885 | + (h->got.offset &~ (bfd_vma) 1))); |
252b5132 RH |
1886 | } |
1887 | else | |
1888 | { | |
1889 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
dc810e39 | 1890 | sgot->contents + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
1891 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT); |
1892 | rela.r_addend = 0; | |
1893 | } | |
1894 | ||
947216bf AM |
1895 | loc = srela->contents; |
1896 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1897 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
1898 | } |
1899 | ||
f5385ebf | 1900 | if (h->needs_copy) |
252b5132 RH |
1901 | { |
1902 | asection *s; | |
1903 | Elf_Internal_Rela rela; | |
947216bf | 1904 | bfd_byte *loc; |
252b5132 RH |
1905 | |
1906 | /* This symbol needs a copy reloc. Set it up. */ | |
1907 | ||
1908 | BFD_ASSERT (h->dynindx != -1 | |
1909 | && (h->root.type == bfd_link_hash_defined | |
1910 | || h->root.type == bfd_link_hash_defweak)); | |
1911 | ||
1912 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1913 | ".rela.bss"); | |
1914 | BFD_ASSERT (s != NULL); | |
1915 | ||
1916 | rela.r_offset = (h->root.u.def.value | |
1917 | + h->root.u.def.section->output_section->vma | |
1918 | + h->root.u.def.section->output_offset); | |
1919 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY); | |
1920 | rela.r_addend = 0; | |
947216bf AM |
1921 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1922 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
1923 | } |
1924 | ||
1925 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
1926 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
1927 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1928 | sym->st_shndx = SHN_ABS; | |
1929 | ||
b34976b6 | 1930 | return TRUE; |
252b5132 RH |
1931 | } |
1932 | ||
1933 | /* Finish up the dynamic sections. */ | |
1934 | ||
b34976b6 | 1935 | static bfd_boolean |
252b5132 RH |
1936 | elf_m68k_finish_dynamic_sections (output_bfd, info) |
1937 | bfd *output_bfd; | |
1938 | struct bfd_link_info *info; | |
1939 | { | |
1940 | bfd *dynobj; | |
1941 | asection *sgot; | |
1942 | asection *sdyn; | |
1943 | ||
1944 | dynobj = elf_hash_table (info)->dynobj; | |
1945 | ||
1946 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1947 | BFD_ASSERT (sgot != NULL); | |
1948 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1949 | ||
1950 | if (elf_hash_table (info)->dynamic_sections_created) | |
1951 | { | |
1952 | asection *splt; | |
1953 | Elf32_External_Dyn *dyncon, *dynconend; | |
1954 | ||
1955 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1956 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1957 | ||
1958 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 1959 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
1960 | for (; dyncon < dynconend; dyncon++) |
1961 | { | |
1962 | Elf_Internal_Dyn dyn; | |
1963 | const char *name; | |
1964 | asection *s; | |
1965 | ||
1966 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1967 | ||
1968 | switch (dyn.d_tag) | |
1969 | { | |
1970 | default: | |
1971 | break; | |
1972 | ||
1973 | case DT_PLTGOT: | |
1974 | name = ".got"; | |
1975 | goto get_vma; | |
1976 | case DT_JMPREL: | |
1977 | name = ".rela.plt"; | |
1978 | get_vma: | |
1979 | s = bfd_get_section_by_name (output_bfd, name); | |
1980 | BFD_ASSERT (s != NULL); | |
1981 | dyn.d_un.d_ptr = s->vma; | |
1982 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1983 | break; | |
1984 | ||
1985 | case DT_PLTRELSZ: | |
1986 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
1987 | BFD_ASSERT (s != NULL); | |
eea6121a | 1988 | dyn.d_un.d_val = s->size; |
252b5132 RH |
1989 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
1990 | break; | |
1991 | ||
1992 | case DT_RELASZ: | |
1993 | /* The procedure linkage table relocs (DT_JMPREL) should | |
1994 | not be included in the overall relocs (DT_RELA). | |
1995 | Therefore, we override the DT_RELASZ entry here to | |
1996 | make it not include the JMPREL relocs. Since the | |
1997 | linker script arranges for .rela.plt to follow all | |
1998 | other relocation sections, we don't have to worry | |
1999 | about changing the DT_RELA entry. */ | |
2000 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2001 | if (s != NULL) | |
eea6121a | 2002 | dyn.d_un.d_val -= s->size; |
252b5132 RH |
2003 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2004 | break; | |
2005 | } | |
2006 | } | |
2007 | ||
2008 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2009 | if (splt->size > 0) |
252b5132 | 2010 | { |
9e1281c7 CM |
2011 | if (!CPU32_FLAG (output_bfd)) |
2012 | { | |
2013 | memcpy (splt->contents, elf_m68k_plt0_entry, PLT_ENTRY_SIZE); | |
2014 | bfd_put_32 (output_bfd, | |
2015 | (sgot->output_section->vma | |
2016 | + sgot->output_offset + 4 | |
2017 | - (splt->output_section->vma + 2)), | |
2018 | splt->contents + 4); | |
2019 | bfd_put_32 (output_bfd, | |
2020 | (sgot->output_section->vma | |
2021 | + sgot->output_offset + 8 | |
2022 | - (splt->output_section->vma + 10)), | |
2023 | splt->contents + 12); | |
c3668558 | 2024 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
9e1281c7 CM |
2025 | = PLT_ENTRY_SIZE; |
2026 | } | |
2027 | else /* cpu32 */ | |
2028 | { | |
2029 | memcpy (splt->contents, elf_cpu32_plt0_entry, PLT_CPU32_ENTRY_SIZE); | |
2030 | bfd_put_32 (output_bfd, | |
2031 | (sgot->output_section->vma | |
2032 | + sgot->output_offset + 4 | |
2033 | - (splt->output_section->vma + 2)), | |
2034 | splt->contents + 4); | |
2035 | bfd_put_32 (output_bfd, | |
2036 | (sgot->output_section->vma | |
2037 | + sgot->output_offset + 8 | |
2038 | - (splt->output_section->vma + 10)), | |
6091b433 | 2039 | splt->contents + 12); |
c3668558 | 2040 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
9e1281c7 CM |
2041 | = PLT_CPU32_ENTRY_SIZE; |
2042 | } | |
252b5132 | 2043 | } |
252b5132 RH |
2044 | } |
2045 | ||
2046 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2047 | if (sgot->size > 0) |
252b5132 RH |
2048 | { |
2049 | if (sdyn == NULL) | |
2050 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2051 | else | |
2052 | bfd_put_32 (output_bfd, | |
2053 | sdyn->output_section->vma + sdyn->output_offset, | |
2054 | sgot->contents); | |
2055 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2056 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2057 | } | |
2058 | ||
2059 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2060 | ||
b34976b6 | 2061 | return TRUE; |
252b5132 RH |
2062 | } |
2063 | ||
0752970e NC |
2064 | /* Given a .data section and a .emreloc in-memory section, store |
2065 | relocation information into the .emreloc section which can be | |
2066 | used at runtime to relocate the section. This is called by the | |
2067 | linker when the --embedded-relocs switch is used. This is called | |
2068 | after the add_symbols entry point has been called for all the | |
2069 | objects, and before the final_link entry point is called. */ | |
2070 | ||
b34976b6 | 2071 | bfd_boolean |
0752970e NC |
2072 | bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) |
2073 | bfd *abfd; | |
2074 | struct bfd_link_info *info; | |
2075 | asection *datasec; | |
2076 | asection *relsec; | |
2077 | char **errmsg; | |
2078 | { | |
2079 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc AM |
2080 | Elf_Internal_Sym *isymbuf = NULL; |
2081 | Elf_Internal_Rela *internal_relocs = NULL; | |
0752970e NC |
2082 | Elf_Internal_Rela *irel, *irelend; |
2083 | bfd_byte *p; | |
dc810e39 | 2084 | bfd_size_type amt; |
0752970e | 2085 | |
1049f94e | 2086 | BFD_ASSERT (! info->relocatable); |
0752970e NC |
2087 | |
2088 | *errmsg = NULL; | |
2089 | ||
2090 | if (datasec->reloc_count == 0) | |
b34976b6 | 2091 | return TRUE; |
0752970e NC |
2092 | |
2093 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
9ad5cbcf | 2094 | |
0752970e | 2095 | /* Get a copy of the native relocations. */ |
45d6a902 | 2096 | internal_relocs = (_bfd_elf_link_read_relocs |
0752970e NC |
2097 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
2098 | info->keep_memory)); | |
2099 | if (internal_relocs == NULL) | |
2100 | goto error_return; | |
0752970e | 2101 | |
dc810e39 AM |
2102 | amt = (bfd_size_type) datasec->reloc_count * 12; |
2103 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
0752970e NC |
2104 | if (relsec->contents == NULL) |
2105 | goto error_return; | |
2106 | ||
2107 | p = relsec->contents; | |
2108 | ||
2109 | irelend = internal_relocs + datasec->reloc_count; | |
2110 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
2111 | { | |
2112 | asection *targetsec; | |
2113 | ||
2114 | /* We are going to write a four byte longword into the runtime | |
2115 | reloc section. The longword will be the address in the data | |
2116 | section which must be relocated. It is followed by the name | |
2117 | of the target section NUL-padded or truncated to 8 | |
2118 | characters. */ | |
2119 | ||
2120 | /* We can only relocate absolute longword relocs at run time. */ | |
2121 | if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32) | |
2122 | { | |
2123 | *errmsg = _("unsupported reloc type"); | |
2124 | bfd_set_error (bfd_error_bad_value); | |
2125 | goto error_return; | |
2126 | } | |
2127 | ||
2128 | /* Get the target section referred to by the reloc. */ | |
2129 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2130 | { | |
0752970e | 2131 | /* A local symbol. */ |
6cdc0ccc AM |
2132 | Elf_Internal_Sym *isym; |
2133 | ||
2134 | /* Read this BFD's local symbols if we haven't done so already. */ | |
2135 | if (isymbuf == NULL) | |
2136 | { | |
2137 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2138 | if (isymbuf == NULL) | |
2139 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2140 | symtab_hdr->sh_info, 0, | |
2141 | NULL, NULL, NULL); | |
2142 | if (isymbuf == NULL) | |
2143 | goto error_return; | |
2144 | } | |
0752970e | 2145 | |
6cdc0ccc AM |
2146 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
2147 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
0752970e NC |
2148 | } |
2149 | else | |
2150 | { | |
2151 | unsigned long indx; | |
2152 | struct elf_link_hash_entry *h; | |
2153 | ||
2154 | /* An external symbol. */ | |
2155 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2156 | h = elf_sym_hashes (abfd)[indx]; | |
2157 | BFD_ASSERT (h != NULL); | |
2158 | if (h->root.type == bfd_link_hash_defined | |
2159 | || h->root.type == bfd_link_hash_defweak) | |
2160 | targetsec = h->root.u.def.section; | |
2161 | else | |
2162 | targetsec = NULL; | |
2163 | } | |
2164 | ||
2165 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
2166 | memset (p + 4, 0, 8); | |
2167 | if (targetsec != NULL) | |
2168 | strncpy (p + 4, targetsec->output_section->name, 8); | |
2169 | } | |
c3668558 | 2170 | |
6cdc0ccc AM |
2171 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
2172 | free (isymbuf); | |
2173 | if (internal_relocs != NULL | |
2174 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2175 | free (internal_relocs); | |
b34976b6 | 2176 | return TRUE; |
0752970e NC |
2177 | |
2178 | error_return: | |
6cdc0ccc AM |
2179 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
2180 | free (isymbuf); | |
2181 | if (internal_relocs != NULL | |
2182 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2183 | free (internal_relocs); | |
b34976b6 | 2184 | return FALSE; |
0752970e NC |
2185 | } |
2186 | ||
aa91b392 | 2187 | static enum elf_reloc_type_class |
f51e552e AM |
2188 | elf32_m68k_reloc_type_class (rela) |
2189 | const Elf_Internal_Rela *rela; | |
aa91b392 | 2190 | { |
f51e552e | 2191 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
aa91b392 AS |
2192 | { |
2193 | case R_68K_RELATIVE: | |
2194 | return reloc_class_relative; | |
2195 | case R_68K_JMP_SLOT: | |
2196 | return reloc_class_plt; | |
2197 | case R_68K_COPY: | |
2198 | return reloc_class_copy; | |
2199 | default: | |
2200 | return reloc_class_normal; | |
2201 | } | |
2202 | } | |
2203 | ||
1715e0e3 AS |
2204 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
2205 | or (bfd_vma) -1 if it should not be included. */ | |
2206 | ||
2207 | static bfd_vma | |
2208 | elf_m68k_plt_sym_val (bfd_vma i, const asection *plt, | |
2209 | const arelent *rel ATTRIBUTE_UNUSED) | |
2210 | { | |
2211 | if (CPU32_FLAG (plt->owner)) | |
2212 | return plt->vma + (i + 1) * PLT_CPU32_ENTRY_SIZE; | |
2213 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
2214 | } | |
2215 | ||
252b5132 RH |
2216 | #define TARGET_BIG_SYM bfd_elf32_m68k_vec |
2217 | #define TARGET_BIG_NAME "elf32-m68k" | |
2218 | #define ELF_MACHINE_CODE EM_68K | |
2219 | #define ELF_MAXPAGESIZE 0x2000 | |
2220 | #define elf_backend_create_dynamic_sections \ | |
2221 | _bfd_elf_create_dynamic_sections | |
2222 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2223 | elf_m68k_link_hash_table_create | |
c152c796 | 2224 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
252b5132 RH |
2225 | |
2226 | #define elf_backend_check_relocs elf_m68k_check_relocs | |
2227 | #define elf_backend_adjust_dynamic_symbol \ | |
2228 | elf_m68k_adjust_dynamic_symbol | |
2229 | #define elf_backend_size_dynamic_sections \ | |
2230 | elf_m68k_size_dynamic_sections | |
2231 | #define elf_backend_relocate_section elf_m68k_relocate_section | |
2232 | #define elf_backend_finish_dynamic_symbol \ | |
2233 | elf_m68k_finish_dynamic_symbol | |
2234 | #define elf_backend_finish_dynamic_sections \ | |
2235 | elf_m68k_finish_dynamic_sections | |
2236 | #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook | |
2237 | #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook | |
9e1281c7 CM |
2238 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
2239 | elf32_m68k_merge_private_bfd_data | |
2240 | #define bfd_elf32_bfd_set_private_flags \ | |
2241 | elf32_m68k_set_private_flags | |
2242 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2243 | elf32_m68k_print_private_bfd_data | |
aa91b392 | 2244 | #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class |
1715e0e3 | 2245 | #define elf_backend_plt_sym_val elf_m68k_plt_sym_val |
9e1281c7 | 2246 | |
252b5132 | 2247 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 2248 | #define elf_backend_can_refcount 1 |
252b5132 RH |
2249 | #define elf_backend_want_got_plt 1 |
2250 | #define elf_backend_plt_readonly 1 | |
2251 | #define elf_backend_want_plt_sym 0 | |
2252 | #define elf_backend_got_header_size 12 | |
b491616a | 2253 | #define elf_backend_rela_normal 1 |
252b5132 RH |
2254 | |
2255 | #include "elf32-target.h" |