Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Motorola 68k series support for 32-bit ELF |
3e829b4a | 2 | Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
7898deda | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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. */ | |
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), | |
252b5132 RH |
93 | /* GNU extension to record C++ vtable hierarchy */ |
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), |
252b5132 RH |
107 | /* GNU extension to record C++ vtable member usage */ |
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 | |
184 | /* end code generated by elf.el */ | |
252b5132 RH |
185 | \f |
186 | /* Functions for the m68k ELF linker. */ | |
187 | ||
188 | /* The name of the dynamic interpreter. This is put in the .interp | |
189 | section. */ | |
190 | ||
191 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
192 | ||
193 | /* The size in bytes of an entry in the procedure linkage table. */ | |
194 | ||
195 | #define PLT_ENTRY_SIZE 20 | |
196 | ||
197 | /* The first entry in a procedure linkage table looks like this. See | |
198 | the SVR4 ABI m68k supplement to see how this works. */ | |
199 | ||
200 | static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] = | |
201 | { | |
202 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ | |
203 | 0, 0, 0, 0, /* replaced with offset to .got + 4. */ | |
204 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */ | |
205 | 0, 0, 0, 0, /* replaced with offset to .got + 8. */ | |
206 | 0, 0, 0, 0 /* pad out to 20 bytes. */ | |
207 | }; | |
208 | ||
209 | /* Subsequent entries in a procedure linkage table look like this. */ | |
210 | ||
211 | static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] = | |
212 | { | |
213 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */ | |
214 | 0, 0, 0, 0, /* replaced with offset to symbol's .got entry. */ | |
215 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
216 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
217 | 0x60, 0xff, /* bra.l .plt */ | |
218 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
219 | }; | |
220 | ||
9e1281c7 CM |
221 | #define CPU32_FLAG(abfd) (elf_elfheader (abfd)->e_flags & EF_CPU32) |
222 | ||
223 | #define PLT_CPU32_ENTRY_SIZE 24 | |
224 | /* Procedure linkage table entries for the cpu32 */ | |
225 | static const bfd_byte elf_cpu32_plt0_entry[PLT_CPU32_ENTRY_SIZE] = | |
226 | { | |
6091b433 | 227 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ |
9e1281c7 | 228 | 0, 0, 0, 0, /* replaced with offset to .got + 4. */ |
6091b433 | 229 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
c3668558 | 230 | 0, 0, 0, 0, /* replace with offset to .got +8. */ |
6091b433 | 231 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 CM |
232 | 0, 0, 0, 0, /* pad out to 24 bytes. */ |
233 | 0, 0 | |
234 | }; | |
235 | ||
236 | static const bfd_byte elf_cpu32_plt_entry[PLT_CPU32_ENTRY_SIZE] = | |
237 | { | |
1ca42bad | 238 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
9e1281c7 | 239 | 0, 0, 0, 0, /* replaced with offset to symbol's .got entry. */ |
1ca42bad | 240 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 CM |
241 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
242 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
243 | 0x60, 0xff, /* bra.l .plt */ | |
244 | 0, 0, 0, 0, /* replaced with offset to start of .plt. */ | |
245 | 0, 0 | |
246 | }; | |
247 | ||
252b5132 RH |
248 | /* The m68k linker needs to keep track of the number of relocs that it |
249 | decides to copy in check_relocs for each symbol. This is so that it | |
250 | can discard PC relative relocs if it doesn't need them when linking | |
251 | with -Bsymbolic. We store the information in a field extending the | |
252 | regular ELF linker hash table. */ | |
253 | ||
254 | /* This structure keeps track of the number of PC relative relocs we have | |
255 | copied for a given symbol. */ | |
256 | ||
257 | struct elf_m68k_pcrel_relocs_copied | |
258 | { | |
259 | /* Next section. */ | |
260 | struct elf_m68k_pcrel_relocs_copied *next; | |
261 | /* A section in dynobj. */ | |
262 | asection *section; | |
263 | /* Number of relocs copied in this section. */ | |
264 | bfd_size_type count; | |
265 | }; | |
266 | ||
267 | /* m68k ELF linker hash entry. */ | |
268 | ||
269 | struct elf_m68k_link_hash_entry | |
270 | { | |
271 | struct elf_link_hash_entry root; | |
272 | ||
273 | /* Number of PC relative relocs copied for this symbol. */ | |
274 | struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied; | |
275 | }; | |
276 | ||
0cca5f05 AS |
277 | #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent)) |
278 | ||
252b5132 RH |
279 | /* m68k ELF linker hash table. */ |
280 | ||
281 | struct elf_m68k_link_hash_table | |
282 | { | |
283 | struct elf_link_hash_table root; | |
b6152c34 AS |
284 | |
285 | /* Small local sym to section mapping cache. */ | |
286 | struct sym_sec_cache sym_sec; | |
252b5132 RH |
287 | }; |
288 | ||
252b5132 RH |
289 | /* Get the m68k ELF linker hash table from a link_info structure. */ |
290 | ||
291 | #define elf_m68k_hash_table(p) \ | |
292 | ((struct elf_m68k_link_hash_table *) (p)->hash) | |
293 | ||
294 | /* Create an entry in an m68k ELF linker hash table. */ | |
295 | ||
296 | static struct bfd_hash_entry * | |
297 | elf_m68k_link_hash_newfunc (entry, table, string) | |
298 | struct bfd_hash_entry *entry; | |
299 | struct bfd_hash_table *table; | |
300 | const char *string; | |
301 | { | |
0cca5f05 | 302 | struct bfd_hash_entry *ret = entry; |
252b5132 RH |
303 | |
304 | /* Allocate the structure if it has not already been allocated by a | |
305 | subclass. */ | |
0cca5f05 AS |
306 | if (ret == NULL) |
307 | ret = bfd_hash_allocate (table, | |
308 | sizeof (struct elf_m68k_link_hash_entry)); | |
309 | if (ret == NULL) | |
310 | return ret; | |
252b5132 RH |
311 | |
312 | /* Call the allocation method of the superclass. */ | |
0cca5f05 AS |
313 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); |
314 | if (ret != NULL) | |
315 | elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
252b5132 | 316 | |
0cca5f05 | 317 | return ret; |
252b5132 RH |
318 | } |
319 | ||
320 | /* Create an m68k ELF linker hash table. */ | |
321 | ||
322 | static struct bfd_link_hash_table * | |
323 | elf_m68k_link_hash_table_create (abfd) | |
324 | bfd *abfd; | |
325 | { | |
326 | struct elf_m68k_link_hash_table *ret; | |
dc810e39 | 327 | bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table); |
252b5132 | 328 | |
e2d34d7d | 329 | ret = (struct elf_m68k_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
330 | if (ret == (struct elf_m68k_link_hash_table *) NULL) |
331 | return NULL; | |
332 | ||
333 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
334 | elf_m68k_link_hash_newfunc)) | |
335 | { | |
e2d34d7d | 336 | free (ret); |
252b5132 RH |
337 | return NULL; |
338 | } | |
339 | ||
b6152c34 AS |
340 | ret->sym_sec.abfd = NULL; |
341 | ||
252b5132 RH |
342 | return &ret->root.root; |
343 | } | |
344 | ||
9e1281c7 | 345 | /* Keep m68k-specific flags in the ELF header */ |
b34976b6 | 346 | static bfd_boolean |
9e1281c7 CM |
347 | elf32_m68k_set_private_flags (abfd, flags) |
348 | bfd *abfd; | |
349 | flagword flags; | |
350 | { | |
351 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
352 | elf_flags_init (abfd) = TRUE; |
353 | return TRUE; | |
9e1281c7 CM |
354 | } |
355 | ||
9e1281c7 CM |
356 | /* Merge backend specific data from an object file to the output |
357 | object file when linking. */ | |
b34976b6 | 358 | static bfd_boolean |
9e1281c7 CM |
359 | elf32_m68k_merge_private_bfd_data (ibfd, obfd) |
360 | bfd *ibfd; | |
361 | bfd *obfd; | |
362 | { | |
363 | flagword out_flags; | |
364 | flagword in_flags; | |
365 | ||
366 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
367 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 368 | return TRUE; |
9e1281c7 CM |
369 | |
370 | in_flags = elf_elfheader (ibfd)->e_flags; | |
371 | out_flags = elf_elfheader (obfd)->e_flags; | |
372 | ||
373 | if (!elf_flags_init (obfd)) | |
374 | { | |
b34976b6 | 375 | elf_flags_init (obfd) = TRUE; |
9e1281c7 CM |
376 | elf_elfheader (obfd)->e_flags = in_flags; |
377 | } | |
378 | ||
b34976b6 | 379 | return TRUE; |
9e1281c7 CM |
380 | } |
381 | ||
382 | /* Display the flags field */ | |
b34976b6 | 383 | static bfd_boolean |
9e1281c7 CM |
384 | elf32_m68k_print_private_bfd_data (abfd, ptr) |
385 | bfd *abfd; | |
386 | PTR ptr; | |
387 | { | |
388 | FILE *file = (FILE *) ptr; | |
389 | ||
390 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
391 | ||
392 | /* Print normal ELF private data. */ | |
393 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
394 | ||
395 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
396 | ||
397 | /* xgettext:c-format */ | |
517662d4 | 398 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
9e1281c7 CM |
399 | |
400 | if (elf_elfheader (abfd)->e_flags & EF_CPU32) | |
517662d4 | 401 | fprintf (file, _(" [cpu32]")); |
9e1281c7 | 402 | |
76f57f3a | 403 | if (elf_elfheader (abfd)->e_flags & EF_M68000) |
428d0de3 | 404 | fprintf (file, _(" [m68000]")); |
76f57f3a | 405 | |
9e1281c7 CM |
406 | fputc ('\n', file); |
407 | ||
b34976b6 | 408 | return TRUE; |
9e1281c7 | 409 | } |
252b5132 RH |
410 | /* Look through the relocs for a section during the first phase, and |
411 | allocate space in the global offset table or procedure linkage | |
412 | table. */ | |
413 | ||
b34976b6 | 414 | static bfd_boolean |
252b5132 RH |
415 | elf_m68k_check_relocs (abfd, info, sec, relocs) |
416 | bfd *abfd; | |
417 | struct bfd_link_info *info; | |
418 | asection *sec; | |
419 | const Elf_Internal_Rela *relocs; | |
420 | { | |
421 | bfd *dynobj; | |
422 | Elf_Internal_Shdr *symtab_hdr; | |
423 | struct elf_link_hash_entry **sym_hashes; | |
424 | bfd_signed_vma *local_got_refcounts; | |
425 | const Elf_Internal_Rela *rel; | |
426 | const Elf_Internal_Rela *rel_end; | |
427 | asection *sgot; | |
428 | asection *srelgot; | |
429 | asection *sreloc; | |
430 | ||
431 | if (info->relocateable) | |
b34976b6 | 432 | return TRUE; |
252b5132 RH |
433 | |
434 | dynobj = elf_hash_table (info)->dynobj; | |
435 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
436 | sym_hashes = elf_sym_hashes (abfd); | |
437 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
438 | ||
439 | sgot = NULL; | |
440 | srelgot = NULL; | |
441 | sreloc = NULL; | |
442 | ||
443 | rel_end = relocs + sec->reloc_count; | |
444 | for (rel = relocs; rel < rel_end; rel++) | |
445 | { | |
446 | unsigned long r_symndx; | |
447 | struct elf_link_hash_entry *h; | |
448 | ||
449 | r_symndx = ELF32_R_SYM (rel->r_info); | |
450 | ||
451 | if (r_symndx < symtab_hdr->sh_info) | |
452 | h = NULL; | |
453 | else | |
454 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
455 | ||
456 | switch (ELF32_R_TYPE (rel->r_info)) | |
457 | { | |
458 | case R_68K_GOT8: | |
459 | case R_68K_GOT16: | |
460 | case R_68K_GOT32: | |
461 | if (h != NULL | |
462 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
463 | break; | |
464 | /* Fall through. */ | |
465 | case R_68K_GOT8O: | |
466 | case R_68K_GOT16O: | |
467 | case R_68K_GOT32O: | |
468 | /* This symbol requires a global offset table entry. */ | |
469 | ||
470 | if (dynobj == NULL) | |
471 | { | |
472 | /* Create the .got section. */ | |
473 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
474 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 475 | return FALSE; |
252b5132 RH |
476 | } |
477 | ||
478 | if (sgot == NULL) | |
479 | { | |
480 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
481 | BFD_ASSERT (sgot != NULL); | |
482 | } | |
483 | ||
484 | if (srelgot == NULL | |
485 | && (h != NULL || info->shared)) | |
486 | { | |
487 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
488 | if (srelgot == NULL) | |
489 | { | |
490 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
491 | if (srelgot == NULL | |
492 | || !bfd_set_section_flags (dynobj, srelgot, | |
493 | (SEC_ALLOC | |
494 | | SEC_LOAD | |
495 | | SEC_HAS_CONTENTS | |
496 | | SEC_IN_MEMORY | |
497 | | SEC_LINKER_CREATED | |
498 | | SEC_READONLY)) | |
499 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) | |
b34976b6 | 500 | return FALSE; |
252b5132 RH |
501 | } |
502 | } | |
503 | ||
504 | if (h != NULL) | |
505 | { | |
51b64d56 | 506 | if (h->got.refcount == 0) |
252b5132 | 507 | { |
252b5132 | 508 | /* Make sure this symbol is output as a dynamic symbol. */ |
b6152c34 AS |
509 | if (h->dynindx == -1 |
510 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
252b5132 RH |
511 | { |
512 | if (!bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 513 | return FALSE; |
252b5132 RH |
514 | } |
515 | ||
516 | /* Allocate space in the .got section. */ | |
517 | sgot->_raw_size += 4; | |
518 | /* Allocate relocation space. */ | |
519 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
520 | } | |
51b64d56 | 521 | h->got.refcount++; |
252b5132 RH |
522 | } |
523 | else | |
524 | { | |
525 | /* This is a global offset table entry for a local symbol. */ | |
526 | if (local_got_refcounts == NULL) | |
527 | { | |
dc810e39 | 528 | bfd_size_type size; |
252b5132 | 529 | |
dc810e39 AM |
530 | size = symtab_hdr->sh_info; |
531 | size *= sizeof (bfd_signed_vma); | |
252b5132 | 532 | local_got_refcounts = ((bfd_signed_vma *) |
51b64d56 | 533 | bfd_zalloc (abfd, size)); |
252b5132 | 534 | if (local_got_refcounts == NULL) |
b34976b6 | 535 | return FALSE; |
252b5132 | 536 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 537 | } |
51b64d56 | 538 | if (local_got_refcounts[r_symndx] == 0) |
252b5132 | 539 | { |
252b5132 RH |
540 | sgot->_raw_size += 4; |
541 | if (info->shared) | |
542 | { | |
543 | /* If we are generating a shared object, we need to | |
544 | output a R_68K_RELATIVE reloc so that the dynamic | |
545 | linker can adjust this GOT entry. */ | |
546 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
547 | } | |
548 | } | |
51b64d56 | 549 | local_got_refcounts[r_symndx]++; |
252b5132 RH |
550 | } |
551 | break; | |
552 | ||
553 | case R_68K_PLT8: | |
554 | case R_68K_PLT16: | |
555 | case R_68K_PLT32: | |
556 | /* This symbol requires a procedure linkage table entry. We | |
557 | actually build the entry in adjust_dynamic_symbol, | |
558 | because this might be a case of linking PIC code which is | |
559 | never referenced by a dynamic object, in which case we | |
560 | don't need to generate a procedure linkage table entry | |
561 | after all. */ | |
562 | ||
563 | /* If this is a local symbol, we resolve it directly without | |
564 | creating a procedure linkage table entry. */ | |
565 | if (h == NULL) | |
566 | continue; | |
567 | ||
568 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
51b64d56 | 569 | h->plt.refcount++; |
252b5132 RH |
570 | break; |
571 | ||
572 | case R_68K_PLT8O: | |
573 | case R_68K_PLT16O: | |
574 | case R_68K_PLT32O: | |
575 | /* This symbol requires a procedure linkage table entry. */ | |
576 | ||
577 | if (h == NULL) | |
578 | { | |
579 | /* It does not make sense to have this relocation for a | |
580 | local symbol. FIXME: does it? How to handle it if | |
581 | it does make sense? */ | |
582 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 583 | return FALSE; |
252b5132 RH |
584 | } |
585 | ||
586 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 AS |
587 | if (h->dynindx == -1 |
588 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
252b5132 RH |
589 | { |
590 | if (!bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 591 | return FALSE; |
252b5132 RH |
592 | } |
593 | ||
594 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
51b64d56 | 595 | h->plt.refcount++; |
252b5132 RH |
596 | break; |
597 | ||
598 | case R_68K_PC8: | |
599 | case R_68K_PC16: | |
600 | case R_68K_PC32: | |
601 | /* If we are creating a shared library and this is not a local | |
602 | symbol, we need to copy the reloc into the shared library. | |
603 | However when linking with -Bsymbolic and this is a global | |
604 | symbol which is defined in an object we are including in the | |
605 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
606 | reloc directly. At this point we have not seen all the input | |
607 | files, so it is possible that DEF_REGULAR is not set now but | |
608 | will be set later (it is never cleared). We account for that | |
609 | possibility below by storing information in the | |
610 | pcrel_relocs_copied field of the hash table entry. */ | |
611 | if (!(info->shared | |
612 | && (sec->flags & SEC_ALLOC) != 0 | |
613 | && h != NULL | |
614 | && (!info->symbolic | |
b6152c34 | 615 | || h->root.type == bfd_link_hash_defweak |
252b5132 RH |
616 | || (h->elf_link_hash_flags |
617 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
618 | { | |
619 | if (h != NULL) | |
620 | { | |
621 | /* Make sure a plt entry is created for this symbol if | |
622 | it turns out to be a function defined by a dynamic | |
623 | object. */ | |
51b64d56 | 624 | h->plt.refcount++; |
252b5132 RH |
625 | } |
626 | break; | |
627 | } | |
628 | /* Fall through. */ | |
629 | case R_68K_8: | |
630 | case R_68K_16: | |
631 | case R_68K_32: | |
632 | if (h != NULL) | |
633 | { | |
634 | /* Make sure a plt entry is created for this symbol if it | |
635 | turns out to be a function defined by a dynamic object. */ | |
51b64d56 | 636 | h->plt.refcount++; |
252b5132 RH |
637 | } |
638 | ||
639 | /* If we are creating a shared library, we need to copy the | |
640 | reloc into the shared library. */ | |
641 | if (info->shared | |
642 | && (sec->flags & SEC_ALLOC) != 0) | |
643 | { | |
644 | /* When creating a shared object, we must copy these | |
645 | reloc types into the output file. We create a reloc | |
646 | section in dynobj and make room for this reloc. */ | |
647 | if (sreloc == NULL) | |
648 | { | |
649 | const char *name; | |
650 | ||
651 | name = (bfd_elf_string_from_elf_section | |
652 | (abfd, | |
653 | elf_elfheader (abfd)->e_shstrndx, | |
654 | elf_section_data (sec)->rel_hdr.sh_name)); | |
655 | if (name == NULL) | |
b34976b6 | 656 | return FALSE; |
252b5132 RH |
657 | |
658 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
659 | && strcmp (bfd_get_section_name (abfd, sec), | |
660 | name + 5) == 0); | |
661 | ||
662 | sreloc = bfd_get_section_by_name (dynobj, name); | |
663 | if (sreloc == NULL) | |
664 | { | |
665 | sreloc = bfd_make_section (dynobj, name); | |
666 | if (sreloc == NULL | |
667 | || !bfd_set_section_flags (dynobj, sreloc, | |
668 | (SEC_ALLOC | |
669 | | SEC_LOAD | |
670 | | SEC_HAS_CONTENTS | |
671 | | SEC_IN_MEMORY | |
672 | | SEC_LINKER_CREATED | |
673 | | SEC_READONLY)) | |
674 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 675 | return FALSE; |
252b5132 RH |
676 | } |
677 | } | |
678 | ||
3e829b4a AS |
679 | if (sec->flags & SEC_READONLY |
680 | /* Don't set DF_TEXTREL yet for PC relative | |
681 | relocations, they might be discarded later. */ | |
682 | && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8 | |
683 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
684 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)) | |
685 | info->flags |= DF_TEXTREL; | |
686 | ||
252b5132 RH |
687 | sreloc->_raw_size += sizeof (Elf32_External_Rela); |
688 | ||
b6152c34 AS |
689 | /* We count the number of PC relative relocations we have |
690 | entered for this symbol, so that we can discard them | |
691 | again if, in the -Bsymbolic case, the symbol is later | |
692 | defined by a regular object, or, in the normal shared | |
693 | case, the symbol is forced to be local. Note that this | |
694 | function is only called if we are using an m68kelf linker | |
695 | hash table, which means that h is really a pointer to an | |
252b5132 | 696 | elf_m68k_link_hash_entry. */ |
b6152c34 AS |
697 | if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8 |
698 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
699 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32) | |
252b5132 | 700 | { |
252b5132 | 701 | struct elf_m68k_pcrel_relocs_copied *p; |
b6152c34 AS |
702 | struct elf_m68k_pcrel_relocs_copied **head; |
703 | ||
704 | if (h != NULL) | |
705 | { | |
706 | struct elf_m68k_link_hash_entry *eh | |
0cca5f05 | 707 | = elf_m68k_hash_entry (h); |
b6152c34 AS |
708 | head = &eh->pcrel_relocs_copied; |
709 | } | |
710 | else | |
711 | { | |
712 | asection *s; | |
713 | s = (bfd_section_from_r_symndx | |
714 | (abfd, &elf_m68k_hash_table (info)->sym_sec, | |
715 | sec, r_symndx)); | |
716 | if (s == NULL) | |
717 | return FALSE; | |
252b5132 | 718 | |
b6152c34 AS |
719 | head = ((struct elf_m68k_pcrel_relocs_copied **) |
720 | &elf_section_data (s)->local_dynrel); | |
721 | } | |
252b5132 | 722 | |
b6152c34 | 723 | for (p = *head; p != NULL; p = p->next) |
252b5132 RH |
724 | if (p->section == sreloc) |
725 | break; | |
726 | ||
727 | if (p == NULL) | |
728 | { | |
729 | p = ((struct elf_m68k_pcrel_relocs_copied *) | |
dc810e39 | 730 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
252b5132 | 731 | if (p == NULL) |
b34976b6 | 732 | return FALSE; |
b6152c34 AS |
733 | p->next = *head; |
734 | *head = p; | |
252b5132 RH |
735 | p->section = sreloc; |
736 | p->count = 0; | |
737 | } | |
738 | ||
739 | ++p->count; | |
740 | } | |
741 | } | |
742 | ||
743 | break; | |
744 | ||
745 | /* This relocation describes the C++ object vtable hierarchy. | |
746 | Reconstruct it for later use during GC. */ | |
747 | case R_68K_GNU_VTINHERIT: | |
748 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 749 | return FALSE; |
252b5132 RH |
750 | break; |
751 | ||
752 | /* This relocation describes which C++ vtable entries are actually | |
753 | used. Record for later use during GC. */ | |
754 | case R_68K_GNU_VTENTRY: | |
755 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 756 | return FALSE; |
252b5132 RH |
757 | break; |
758 | ||
759 | default: | |
760 | break; | |
761 | } | |
762 | } | |
763 | ||
b34976b6 | 764 | return TRUE; |
252b5132 RH |
765 | } |
766 | ||
767 | /* Return the section that should be marked against GC for a given | |
768 | relocation. */ | |
769 | ||
770 | static asection * | |
1e2f5b6e AM |
771 | elf_m68k_gc_mark_hook (sec, info, rel, h, sym) |
772 | asection *sec; | |
121089cb | 773 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
774 | Elf_Internal_Rela *rel; |
775 | struct elf_link_hash_entry *h; | |
776 | Elf_Internal_Sym *sym; | |
777 | { | |
778 | if (h != NULL) | |
779 | { | |
780 | switch (ELF32_R_TYPE (rel->r_info)) | |
781 | { | |
782 | case R_68K_GNU_VTINHERIT: | |
783 | case R_68K_GNU_VTENTRY: | |
784 | break; | |
785 | ||
786 | default: | |
787 | switch (h->root.type) | |
788 | { | |
789 | default: | |
790 | break; | |
791 | ||
792 | case bfd_link_hash_defined: | |
793 | case bfd_link_hash_defweak: | |
794 | return h->root.u.def.section; | |
795 | ||
796 | case bfd_link_hash_common: | |
797 | return h->root.u.c.p->section; | |
798 | } | |
799 | } | |
800 | } | |
801 | else | |
1e2f5b6e | 802 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
803 | |
804 | return NULL; | |
805 | } | |
806 | ||
807 | /* Update the got entry reference counts for the section being removed. */ | |
808 | ||
b34976b6 | 809 | static bfd_boolean |
252b5132 RH |
810 | elf_m68k_gc_sweep_hook (abfd, info, sec, relocs) |
811 | bfd *abfd; | |
812 | struct bfd_link_info *info; | |
813 | asection *sec; | |
814 | const Elf_Internal_Rela *relocs; | |
815 | { | |
816 | Elf_Internal_Shdr *symtab_hdr; | |
817 | struct elf_link_hash_entry **sym_hashes; | |
818 | bfd_signed_vma *local_got_refcounts; | |
819 | const Elf_Internal_Rela *rel, *relend; | |
820 | unsigned long r_symndx; | |
821 | struct elf_link_hash_entry *h; | |
822 | bfd *dynobj; | |
dd5724d5 AM |
823 | asection *sgot; |
824 | asection *srelgot; | |
252b5132 RH |
825 | |
826 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
827 | sym_hashes = elf_sym_hashes (abfd); | |
828 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
829 | ||
830 | dynobj = elf_hash_table (info)->dynobj; | |
dd5724d5 | 831 | if (dynobj == NULL) |
b34976b6 | 832 | return TRUE; |
dd5724d5 AM |
833 | |
834 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
835 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
252b5132 RH |
836 | |
837 | relend = relocs + sec->reloc_count; | |
838 | for (rel = relocs; rel < relend; rel++) | |
839 | { | |
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. */ | |
858 | sgot->_raw_size -= 4; | |
859 | srelgot->_raw_size -= sizeof (Elf32_External_Rela); | |
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. */ | |
871 | sgot->_raw_size -= 4; | |
872 | if (info->shared) | |
873 | srelgot->_raw_size -= sizeof (Elf32_External_Rela); | |
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 | |
927 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
928 | || h->weakdef != NULL | |
929 | || ((h->elf_link_hash_flags | |
930 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
931 | && (h->elf_link_hash_flags | |
932 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
933 | && (h->elf_link_hash_flags | |
934 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
935 | ||
936 | /* If this is a function, put it in the procedure linkage table. We | |
937 | will fill in the contents of the procedure linkage table later, | |
938 | when we know the address of the .got section. */ | |
939 | if (h->type == STT_FUNC | |
940 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
941 | { | |
942 | if (! info->shared | |
943 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
944 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0 | |
945 | /* We must always create the plt entry if it was referenced | |
946 | by a PLTxxO relocation. In this case we already recorded | |
947 | it as a dynamic symbol. */ | |
948 | && h->dynindx == -1) | |
949 | { | |
950 | /* This case can occur if we saw a PLTxx reloc in an input | |
951 | file, but the symbol was never referred to by a dynamic | |
952 | object. In such a case, we don't actually need to build | |
953 | a procedure linkage table, and we can just do a PCxx | |
954 | reloc instead. */ | |
955 | BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); | |
956 | h->plt.offset = (bfd_vma) -1; | |
b34976b6 | 957 | return TRUE; |
252b5132 RH |
958 | } |
959 | ||
960 | /* GC may have rendered this entry unused. */ | |
961 | if (h->plt.refcount <= 0) | |
962 | { | |
963 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
964 | h->plt.offset = (bfd_vma) -1; | |
b34976b6 | 965 | return TRUE; |
252b5132 RH |
966 | } |
967 | ||
968 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 AS |
969 | if (h->dynindx == -1 |
970 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
252b5132 RH |
971 | { |
972 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 973 | return FALSE; |
252b5132 RH |
974 | } |
975 | ||
976 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
977 | BFD_ASSERT (s != NULL); | |
978 | ||
979 | /* If this is the first .plt entry, make room for the special | |
980 | first entry. */ | |
981 | if (s->_raw_size == 0) | |
70f06c4a AS |
982 | { |
983 | if (CPU32_FLAG (dynobj)) | |
984 | s->_raw_size += PLT_CPU32_ENTRY_SIZE; | |
985 | else | |
986 | s->_raw_size += PLT_ENTRY_SIZE; | |
987 | } | |
252b5132 RH |
988 | |
989 | /* If this symbol is not defined in a regular file, and we are | |
990 | not generating a shared library, then set the symbol to this | |
991 | location in the .plt. This is required to make function | |
992 | pointers compare as equal between the normal executable and | |
993 | the shared library. */ | |
994 | if (!info->shared | |
995 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
996 | { | |
997 | h->root.u.def.section = s; | |
998 | h->root.u.def.value = s->_raw_size; | |
999 | } | |
1000 | ||
1001 | h->plt.offset = s->_raw_size; | |
1002 | ||
1003 | /* Make room for this entry. */ | |
9e1281c7 CM |
1004 | if (CPU32_FLAG (dynobj)) |
1005 | s->_raw_size += PLT_CPU32_ENTRY_SIZE; | |
1006 | else | |
1007 | s->_raw_size += PLT_ENTRY_SIZE; | |
252b5132 RH |
1008 | |
1009 | /* We also need to make an entry in the .got.plt section, which | |
1010 | will be placed in the .got section by the linker script. */ | |
1011 | ||
1012 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1013 | BFD_ASSERT (s != NULL); | |
1014 | s->_raw_size += 4; | |
1015 | ||
1016 | /* We also need to make an entry in the .rela.plt section. */ | |
1017 | ||
1018 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1019 | BFD_ASSERT (s != NULL); | |
1020 | s->_raw_size += sizeof (Elf32_External_Rela); | |
1021 | ||
b34976b6 | 1022 | return TRUE; |
252b5132 RH |
1023 | } |
1024 | ||
1025 | /* Reinitialize the plt offset now that it is not used as a reference | |
1026 | count any more. */ | |
1027 | h->plt.offset = (bfd_vma) -1; | |
1028 | ||
1029 | /* If this is a weak symbol, and there is a real definition, the | |
1030 | processor independent code will have arranged for us to see the | |
1031 | real definition first, and we can just use the same value. */ | |
1032 | if (h->weakdef != NULL) | |
1033 | { | |
1034 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1035 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1036 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1037 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
b34976b6 | 1038 | return TRUE; |
252b5132 RH |
1039 | } |
1040 | ||
1041 | /* This is a reference to a symbol defined by a dynamic object which | |
1042 | is not a function. */ | |
1043 | ||
1044 | /* If we are creating a shared library, we must presume that the | |
1045 | only references to the symbol are via the global offset table. | |
1046 | For such cases we need not do anything here; the relocations will | |
1047 | be handled correctly by relocate_section. */ | |
1048 | if (info->shared) | |
b34976b6 | 1049 | return TRUE; |
252b5132 RH |
1050 | |
1051 | /* We must allocate the symbol in our .dynbss section, which will | |
1052 | become part of the .bss section of the executable. There will be | |
1053 | an entry for this symbol in the .dynsym section. The dynamic | |
1054 | object will contain position independent code, so all references | |
1055 | from the dynamic object to this symbol will go through the global | |
1056 | offset table. The dynamic linker will use the .dynsym entry to | |
1057 | determine the address it must put in the global offset table, so | |
1058 | both the dynamic object and the regular object will refer to the | |
1059 | same memory location for the variable. */ | |
1060 | ||
1061 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1062 | BFD_ASSERT (s != NULL); | |
1063 | ||
1064 | /* We must generate a R_68K_COPY reloc to tell the dynamic linker to | |
1065 | copy the initial value out of the dynamic object and into the | |
1066 | runtime process image. We need to remember the offset into the | |
1067 | .rela.bss section we are going to use. */ | |
1068 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1069 | { | |
1070 | asection *srel; | |
1071 | ||
1072 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1073 | BFD_ASSERT (srel != NULL); | |
1074 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
1075 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
1076 | } | |
1077 | ||
1078 | /* We need to figure out the alignment required for this symbol. I | |
1079 | have no idea how ELF linkers handle this. */ | |
1080 | power_of_two = bfd_log2 (h->size); | |
1081 | if (power_of_two > 3) | |
1082 | power_of_two = 3; | |
1083 | ||
1084 | /* Apply the required alignment. */ | |
1085 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
1086 | (bfd_size_type) (1 << power_of_two)); | |
1087 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
1088 | { | |
1089 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 1090 | return FALSE; |
252b5132 RH |
1091 | } |
1092 | ||
1093 | /* Define the symbol as being at this point in the section. */ | |
1094 | h->root.u.def.section = s; | |
1095 | h->root.u.def.value = s->_raw_size; | |
1096 | ||
1097 | /* Increment the section size to make room for the symbol. */ | |
1098 | s->_raw_size += h->size; | |
1099 | ||
b34976b6 | 1100 | return TRUE; |
252b5132 RH |
1101 | } |
1102 | ||
1103 | /* Set the sizes of the dynamic sections. */ | |
1104 | ||
b34976b6 | 1105 | static bfd_boolean |
252b5132 | 1106 | elf_m68k_size_dynamic_sections (output_bfd, info) |
aa91b392 | 1107 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1108 | struct bfd_link_info *info; |
1109 | { | |
1110 | bfd *dynobj; | |
1111 | asection *s; | |
b34976b6 AM |
1112 | bfd_boolean plt; |
1113 | bfd_boolean relocs; | |
252b5132 RH |
1114 | |
1115 | dynobj = elf_hash_table (info)->dynobj; | |
1116 | BFD_ASSERT (dynobj != NULL); | |
1117 | ||
1118 | if (elf_hash_table (info)->dynamic_sections_created) | |
1119 | { | |
1120 | /* Set the contents of the .interp section to the interpreter. */ | |
1121 | if (!info->shared) | |
1122 | { | |
1123 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1124 | BFD_ASSERT (s != NULL); | |
1125 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
1126 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1127 | } | |
1128 | } | |
1129 | else | |
1130 | { | |
1131 | /* We may have created entries in the .rela.got section. | |
1132 | However, if we are not creating the dynamic sections, we will | |
1133 | not actually use these entries. Reset the size of .rela.got, | |
1134 | which will cause it to get stripped from the output file | |
1135 | below. */ | |
1136 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1137 | if (s != NULL) | |
1138 | s->_raw_size = 0; | |
1139 | } | |
1140 | ||
b6152c34 AS |
1141 | /* If this is a -Bsymbolic shared link, then we need to discard all |
1142 | PC relative relocs against symbols defined in a regular object. | |
1143 | For the normal shared case we discard the PC relative relocs | |
1144 | against symbols that have become local due to visibility changes. | |
1145 | We allocated space for them in the check_relocs routine, but we | |
1146 | will not fill them in in the relocate_section routine. */ | |
1147 | if (info->shared) | |
0cca5f05 AS |
1148 | elf_link_hash_traverse (elf_hash_table (info), |
1149 | elf_m68k_discard_copies, | |
1150 | (PTR) info); | |
252b5132 RH |
1151 | |
1152 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1153 | determined the sizes of the various dynamic sections. Allocate | |
1154 | memory for them. */ | |
b34976b6 AM |
1155 | plt = FALSE; |
1156 | relocs = FALSE; | |
252b5132 RH |
1157 | for (s = dynobj->sections; s != NULL; s = s->next) |
1158 | { | |
1159 | const char *name; | |
b34976b6 | 1160 | bfd_boolean strip; |
252b5132 RH |
1161 | |
1162 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1163 | continue; | |
1164 | ||
1165 | /* It's OK to base decisions on the section name, because none | |
1166 | of the dynobj section names depend upon the input files. */ | |
1167 | name = bfd_get_section_name (dynobj, s); | |
1168 | ||
b34976b6 | 1169 | strip = FALSE; |
252b5132 RH |
1170 | |
1171 | if (strcmp (name, ".plt") == 0) | |
1172 | { | |
1173 | if (s->_raw_size == 0) | |
1174 | { | |
1175 | /* Strip this section if we don't need it; see the | |
1176 | comment below. */ | |
b34976b6 | 1177 | strip = TRUE; |
252b5132 RH |
1178 | } |
1179 | else | |
1180 | { | |
1181 | /* Remember whether there is a PLT. */ | |
b34976b6 | 1182 | plt = TRUE; |
252b5132 RH |
1183 | } |
1184 | } | |
1185 | else if (strncmp (name, ".rela", 5) == 0) | |
1186 | { | |
1187 | if (s->_raw_size == 0) | |
1188 | { | |
1189 | /* If we don't need this section, strip it from the | |
1190 | output file. This is mostly to handle .rela.bss and | |
1191 | .rela.plt. We must create both sections in | |
1192 | create_dynamic_sections, because they must be created | |
1193 | before the linker maps input sections to output | |
1194 | sections. The linker does that before | |
1195 | adjust_dynamic_symbol is called, and it is that | |
1196 | function which decides whether anything needs to go | |
1197 | into these sections. */ | |
b34976b6 | 1198 | strip = TRUE; |
252b5132 RH |
1199 | } |
1200 | else | |
1201 | { | |
b34976b6 | 1202 | relocs = TRUE; |
252b5132 RH |
1203 | |
1204 | /* We use the reloc_count field as a counter if we need | |
1205 | to copy relocs into the output file. */ | |
1206 | s->reloc_count = 0; | |
1207 | } | |
1208 | } | |
1209 | else if (strncmp (name, ".got", 4) != 0) | |
1210 | { | |
1211 | /* It's not one of our sections, so don't allocate space. */ | |
1212 | continue; | |
1213 | } | |
1214 | ||
1215 | if (strip) | |
1216 | { | |
7f8d5fc9 | 1217 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
1218 | continue; |
1219 | } | |
1220 | ||
1221 | /* Allocate memory for the section contents. */ | |
7a9af8c4 NC |
1222 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
1223 | Unused entries should be reclaimed before the section's contents | |
1224 | are written out, but at the moment this does not happen. Thus in | |
1225 | order to prevent writing out garbage, we initialise the section's | |
1226 | contents to zero. */ | |
1227 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
252b5132 | 1228 | if (s->contents == NULL && s->_raw_size != 0) |
b34976b6 | 1229 | return FALSE; |
252b5132 RH |
1230 | } |
1231 | ||
1232 | if (elf_hash_table (info)->dynamic_sections_created) | |
1233 | { | |
1234 | /* Add some entries to the .dynamic section. We fill in the | |
1235 | values later, in elf_m68k_finish_dynamic_sections, but we | |
1236 | must add the entries now so that we get the correct size for | |
1237 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1238 | dynamic linker and used by the debugger. */ | |
dc810e39 AM |
1239 | #define add_dynamic_entry(TAG, VAL) \ |
1240 | bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
1241 | ||
252b5132 RH |
1242 | if (!info->shared) |
1243 | { | |
dc810e39 | 1244 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1245 | return FALSE; |
252b5132 RH |
1246 | } |
1247 | ||
1248 | if (plt) | |
1249 | { | |
dc810e39 AM |
1250 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1251 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1252 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1253 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1254 | return FALSE; |
252b5132 RH |
1255 | } |
1256 | ||
1257 | if (relocs) | |
1258 | { | |
dc810e39 AM |
1259 | if (!add_dynamic_entry (DT_RELA, 0) |
1260 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1261 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1262 | return FALSE; |
252b5132 RH |
1263 | } |
1264 | ||
aa91b392 | 1265 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 1266 | { |
dc810e39 | 1267 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1268 | return FALSE; |
252b5132 RH |
1269 | } |
1270 | } | |
dc810e39 | 1271 | #undef add_dynamic_entry |
252b5132 | 1272 | |
b34976b6 | 1273 | return TRUE; |
252b5132 RH |
1274 | } |
1275 | ||
0cca5f05 | 1276 | /* This function is called via elf_link_hash_traverse if we are |
b6152c34 AS |
1277 | creating a shared object. In the -Bsymbolic case it discards the |
1278 | space allocated to copy PC relative relocs against symbols which | |
3e829b4a | 1279 | are defined in regular objects. For the normal shared case, it |
b6152c34 AS |
1280 | discards space for pc-relative relocs that have become local due to |
1281 | symbol visibility changes. We allocated space for them in the | |
1282 | check_relocs routine, but we won't fill them in in the | |
3e829b4a AS |
1283 | relocate_section routine. |
1284 | ||
1285 | We also check whether any of the remaining relocations apply | |
1286 | against a readonly section, and set the DF_TEXTREL flag in this | |
1287 | case. */ | |
252b5132 | 1288 | |
b34976b6 | 1289 | static bfd_boolean |
b6152c34 | 1290 | elf_m68k_discard_copies (h, inf) |
0cca5f05 | 1291 | struct elf_link_hash_entry *h; |
b6152c34 | 1292 | PTR inf; |
252b5132 | 1293 | { |
b6152c34 | 1294 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
252b5132 RH |
1295 | struct elf_m68k_pcrel_relocs_copied *s; |
1296 | ||
0cca5f05 AS |
1297 | if (h->root.type == bfd_link_hash_warning) |
1298 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e92d460e | 1299 | |
0cca5f05 | 1300 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 |
b6152c34 | 1301 | || (!info->symbolic |
0cca5f05 | 1302 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)) |
3e829b4a AS |
1303 | { |
1304 | if ((info->flags & DF_TEXTREL) == 0) | |
1305 | { | |
1306 | /* Look for relocations against read-only sections. */ | |
0cca5f05 AS |
1307 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
1308 | s != NULL; | |
1309 | s = s->next) | |
3e829b4a AS |
1310 | if ((s->section->flags & SEC_READONLY) != 0) |
1311 | { | |
1312 | info->flags |= DF_TEXTREL; | |
1313 | break; | |
1314 | } | |
1315 | } | |
0cca5f05 | 1316 | |
3e829b4a AS |
1317 | return TRUE; |
1318 | } | |
252b5132 | 1319 | |
0cca5f05 AS |
1320 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
1321 | s != NULL; | |
1322 | s = s->next) | |
252b5132 RH |
1323 | s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela); |
1324 | ||
b34976b6 | 1325 | return TRUE; |
252b5132 RH |
1326 | } |
1327 | ||
1328 | /* Relocate an M68K ELF section. */ | |
1329 | ||
b34976b6 | 1330 | static bfd_boolean |
252b5132 RH |
1331 | elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section, |
1332 | contents, relocs, local_syms, local_sections) | |
1333 | bfd *output_bfd; | |
1334 | struct bfd_link_info *info; | |
1335 | bfd *input_bfd; | |
1336 | asection *input_section; | |
1337 | bfd_byte *contents; | |
1338 | Elf_Internal_Rela *relocs; | |
1339 | Elf_Internal_Sym *local_syms; | |
1340 | asection **local_sections; | |
1341 | { | |
1342 | bfd *dynobj; | |
1343 | Elf_Internal_Shdr *symtab_hdr; | |
1344 | struct elf_link_hash_entry **sym_hashes; | |
1345 | bfd_vma *local_got_offsets; | |
1346 | asection *sgot; | |
1347 | asection *splt; | |
1348 | asection *sreloc; | |
1349 | Elf_Internal_Rela *rel; | |
1350 | Elf_Internal_Rela *relend; | |
1351 | ||
b491616a | 1352 | if (info->relocateable) |
b34976b6 | 1353 | return TRUE; |
b491616a | 1354 | |
252b5132 RH |
1355 | dynobj = elf_hash_table (info)->dynobj; |
1356 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1357 | sym_hashes = elf_sym_hashes (input_bfd); | |
1358 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1359 | ||
1360 | sgot = NULL; | |
1361 | splt = NULL; | |
1362 | sreloc = NULL; | |
1363 | ||
1364 | rel = relocs; | |
1365 | relend = relocs + input_section->reloc_count; | |
1366 | for (; rel < relend; rel++) | |
1367 | { | |
1368 | int r_type; | |
1369 | reloc_howto_type *howto; | |
1370 | unsigned long r_symndx; | |
1371 | struct elf_link_hash_entry *h; | |
1372 | Elf_Internal_Sym *sym; | |
1373 | asection *sec; | |
1374 | bfd_vma relocation; | |
1375 | bfd_reloc_status_type r; | |
1376 | ||
1377 | r_type = ELF32_R_TYPE (rel->r_info); | |
1378 | if (r_type < 0 || r_type >= (int) R_68K_max) | |
1379 | { | |
1380 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1381 | return FALSE; |
252b5132 RH |
1382 | } |
1383 | howto = howto_table + r_type; | |
1384 | ||
1385 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1386 | ||
252b5132 RH |
1387 | h = NULL; |
1388 | sym = NULL; | |
1389 | sec = NULL; | |
1390 | if (r_symndx < symtab_hdr->sh_info) | |
1391 | { | |
1392 | sym = local_syms + r_symndx; | |
1393 | sec = local_sections[r_symndx]; | |
f8df10f4 | 1394 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
252b5132 RH |
1395 | } |
1396 | else | |
1397 | { | |
1398 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1399 | while (h->root.type == bfd_link_hash_indirect | |
1400 | || h->root.type == bfd_link_hash_warning) | |
1401 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1402 | if (h->root.type == bfd_link_hash_defined | |
1403 | || h->root.type == bfd_link_hash_defweak) | |
1404 | { | |
1405 | sec = h->root.u.def.section; | |
1406 | if (((r_type == R_68K_PLT8 | |
1407 | || r_type == R_68K_PLT16 | |
1408 | || r_type == R_68K_PLT32 | |
1409 | || r_type == R_68K_PLT8O | |
1410 | || r_type == R_68K_PLT16O | |
1411 | || r_type == R_68K_PLT32O) | |
1412 | && h->plt.offset != (bfd_vma) -1 | |
1413 | && elf_hash_table (info)->dynamic_sections_created) | |
1414 | || ((r_type == R_68K_GOT8O | |
1415 | || r_type == R_68K_GOT16O | |
1416 | || r_type == R_68K_GOT32O | |
1417 | || ((r_type == R_68K_GOT8 | |
1418 | || r_type == R_68K_GOT16 | |
1419 | || r_type == R_68K_GOT32) | |
1420 | && strcmp (h->root.root.string, | |
1421 | "_GLOBAL_OFFSET_TABLE_") != 0)) | |
1422 | && elf_hash_table (info)->dynamic_sections_created | |
1423 | && (! info->shared | |
1424 | || (! info->symbolic && h->dynindx != -1) | |
1425 | || (h->elf_link_hash_flags | |
1426 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1427 | || (info->shared | |
1428 | && ((! info->symbolic && h->dynindx != -1) | |
1429 | || (h->elf_link_hash_flags | |
1430 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
95fc45e6 AS |
1431 | && ((input_section->flags & SEC_ALLOC) != 0 |
1432 | /* DWARF will emit R_68K_32 relocations in its | |
1433 | sections against symbols defined externally | |
1434 | in shared libraries. We can't do anything | |
1435 | with them here. */ | |
1436 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
1437 | && (h->elf_link_hash_flags | |
1438 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) | |
252b5132 RH |
1439 | && (r_type == R_68K_8 |
1440 | || r_type == R_68K_16 | |
1441 | || r_type == R_68K_32 | |
1442 | || r_type == R_68K_PC8 | |
1443 | || r_type == R_68K_PC16 | |
1444 | || r_type == R_68K_PC32))) | |
1445 | { | |
1446 | /* In these cases, we don't need the relocation | |
1447 | value. We check specially because in some | |
1448 | obscure cases sec->output_section will be NULL. */ | |
1449 | relocation = 0; | |
1450 | } | |
1451 | else | |
1452 | relocation = (h->root.u.def.value | |
1453 | + sec->output_section->vma | |
1454 | + sec->output_offset); | |
1455 | } | |
1456 | else if (h->root.type == bfd_link_hash_undefweak) | |
1457 | relocation = 0; | |
671bae9c NC |
1458 | else if (info->shared |
1459 | && (!info->symbolic || info->allow_shlib_undefined) | |
3a27a730 L |
1460 | && !info->no_undefined |
1461 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
252b5132 RH |
1462 | relocation = 0; |
1463 | else | |
1464 | { | |
1465 | if (!(info->callbacks->undefined_symbol | |
1466 | (info, h->root.root.string, input_bfd, | |
5cc7c785 | 1467 | input_section, rel->r_offset, |
3a27a730 L |
1468 | (!info->shared || info->no_undefined |
1469 | || ELF_ST_VISIBILITY (h->other))))) | |
b34976b6 | 1470 | return FALSE; |
252b5132 RH |
1471 | relocation = 0; |
1472 | } | |
1473 | } | |
1474 | ||
1475 | switch (r_type) | |
1476 | { | |
1477 | case R_68K_GOT8: | |
1478 | case R_68K_GOT16: | |
1479 | case R_68K_GOT32: | |
1480 | /* Relocation is to the address of the entry for this symbol | |
1481 | in the global offset table. */ | |
1482 | if (h != NULL | |
1483 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1484 | break; | |
1485 | /* Fall through. */ | |
1486 | case R_68K_GOT8O: | |
1487 | case R_68K_GOT16O: | |
1488 | case R_68K_GOT32O: | |
1489 | /* Relocation is the offset of the entry for this symbol in | |
1490 | the global offset table. */ | |
1491 | ||
1492 | { | |
1493 | bfd_vma off; | |
1494 | ||
1495 | if (sgot == NULL) | |
1496 | { | |
1497 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1498 | BFD_ASSERT (sgot != NULL); | |
1499 | } | |
1500 | ||
1501 | if (h != NULL) | |
1502 | { | |
1503 | off = h->got.offset; | |
1504 | BFD_ASSERT (off != (bfd_vma) -1); | |
1505 | ||
1506 | if (!elf_hash_table (info)->dynamic_sections_created | |
1507 | || (info->shared | |
1508 | && (info->symbolic || h->dynindx == -1) | |
1509 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
1510 | { | |
1511 | /* This is actually a static link, or it is a | |
1512 | -Bsymbolic link and the symbol is defined | |
1513 | locally, or the symbol was forced to be local | |
1514 | because of a version file.. We must initialize | |
1515 | this entry in the global offset table. Since | |
1516 | the offset must always be a multiple of 4, we | |
1517 | use the least significant bit to record whether | |
1518 | we have initialized it already. | |
1519 | ||
1520 | When doing a dynamic link, we create a .rela.got | |
1521 | relocation entry to initialize the value. This | |
1522 | is done in the finish_dynamic_symbol routine. */ | |
1523 | if ((off & 1) != 0) | |
1524 | off &= ~1; | |
1525 | else | |
1526 | { | |
1527 | bfd_put_32 (output_bfd, relocation, | |
1528 | sgot->contents + off); | |
1529 | h->got.offset |= 1; | |
1530 | } | |
1531 | } | |
1532 | } | |
1533 | else | |
1534 | { | |
1535 | BFD_ASSERT (local_got_offsets != NULL | |
1536 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1537 | ||
1538 | off = local_got_offsets[r_symndx]; | |
1539 | ||
1540 | /* The offset must always be a multiple of 4. We use | |
1541 | the least significant bit to record whether we have | |
1542 | already generated the necessary reloc. */ | |
1543 | if ((off & 1) != 0) | |
1544 | off &= ~1; | |
1545 | else | |
1546 | { | |
1547 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1548 | ||
1549 | if (info->shared) | |
1550 | { | |
947216bf | 1551 | asection *s; |
252b5132 | 1552 | Elf_Internal_Rela outrel; |
947216bf | 1553 | bfd_byte *loc; |
252b5132 | 1554 | |
947216bf AM |
1555 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
1556 | BFD_ASSERT (s != NULL); | |
252b5132 RH |
1557 | |
1558 | outrel.r_offset = (sgot->output_section->vma | |
1559 | + sgot->output_offset | |
1560 | + off); | |
1561 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
1562 | outrel.r_addend = relocation; | |
947216bf AM |
1563 | loc = s->contents; |
1564 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1565 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1566 | } |
1567 | ||
1568 | local_got_offsets[r_symndx] |= 1; | |
1569 | } | |
1570 | } | |
1571 | ||
1572 | relocation = sgot->output_offset + off; | |
1573 | if (r_type == R_68K_GOT8O | |
1574 | || r_type == R_68K_GOT16O | |
1575 | || r_type == R_68K_GOT32O) | |
1576 | { | |
1577 | /* This relocation does not use the addend. */ | |
1578 | rel->r_addend = 0; | |
1579 | } | |
1580 | else | |
1581 | relocation += sgot->output_section->vma; | |
1582 | } | |
1583 | break; | |
1584 | ||
1585 | case R_68K_PLT8: | |
1586 | case R_68K_PLT16: | |
1587 | case R_68K_PLT32: | |
1588 | /* Relocation is to the entry for this symbol in the | |
1589 | procedure linkage table. */ | |
1590 | ||
1591 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1592 | without using the procedure linkage table. */ | |
1593 | if (h == NULL) | |
1594 | break; | |
1595 | ||
1596 | if (h->plt.offset == (bfd_vma) -1 | |
1597 | || !elf_hash_table (info)->dynamic_sections_created) | |
1598 | { | |
1599 | /* We didn't make a PLT entry for this symbol. This | |
1600 | happens when statically linking PIC code, or when | |
1601 | using -Bsymbolic. */ | |
1602 | break; | |
1603 | } | |
1604 | ||
1605 | if (splt == NULL) | |
1606 | { | |
1607 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1608 | BFD_ASSERT (splt != NULL); | |
1609 | } | |
1610 | ||
1611 | relocation = (splt->output_section->vma | |
1612 | + splt->output_offset | |
1613 | + h->plt.offset); | |
1614 | break; | |
1615 | ||
1616 | case R_68K_PLT8O: | |
1617 | case R_68K_PLT16O: | |
1618 | case R_68K_PLT32O: | |
1619 | /* Relocation is the offset of the entry for this symbol in | |
1620 | the procedure linkage table. */ | |
1621 | BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1); | |
1622 | ||
1623 | if (splt == NULL) | |
1624 | { | |
1625 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1626 | BFD_ASSERT (splt != NULL); | |
1627 | } | |
1628 | ||
1629 | relocation = h->plt.offset; | |
1630 | ||
1631 | /* This relocation does not use the addend. */ | |
1632 | rel->r_addend = 0; | |
1633 | ||
1634 | break; | |
1635 | ||
1636 | case R_68K_PC8: | |
1637 | case R_68K_PC16: | |
1638 | case R_68K_PC32: | |
b6152c34 AS |
1639 | if (h == NULL |
1640 | || (info->shared | |
1641 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
252b5132 RH |
1642 | break; |
1643 | /* Fall through. */ | |
1644 | case R_68K_8: | |
1645 | case R_68K_16: | |
1646 | case R_68K_32: | |
1647 | if (info->shared | |
ec338859 | 1648 | && r_symndx != 0 |
252b5132 RH |
1649 | && (input_section->flags & SEC_ALLOC) != 0 |
1650 | && ((r_type != R_68K_PC8 | |
1651 | && r_type != R_68K_PC16 | |
1652 | && r_type != R_68K_PC32) | |
1653 | || (!info->symbolic | |
1654 | || (h->elf_link_hash_flags | |
1655 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
1656 | { | |
1657 | Elf_Internal_Rela outrel; | |
947216bf | 1658 | bfd_byte *loc; |
b34976b6 | 1659 | bfd_boolean skip, relocate; |
252b5132 RH |
1660 | |
1661 | /* When generating a shared object, these relocations | |
1662 | are copied into the output file to be resolved at run | |
1663 | time. */ | |
1664 | ||
1665 | if (sreloc == NULL) | |
1666 | { | |
1667 | const char *name; | |
1668 | ||
1669 | name = (bfd_elf_string_from_elf_section | |
1670 | (input_bfd, | |
1671 | elf_elfheader (input_bfd)->e_shstrndx, | |
1672 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1673 | if (name == NULL) | |
b34976b6 | 1674 | return FALSE; |
252b5132 RH |
1675 | |
1676 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1677 | && strcmp (bfd_get_section_name (input_bfd, | |
1678 | input_section), | |
1679 | name + 5) == 0); | |
1680 | ||
1681 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1682 | BFD_ASSERT (sreloc != NULL); | |
1683 | } | |
1684 | ||
b34976b6 AM |
1685 | skip = FALSE; |
1686 | relocate = FALSE; | |
252b5132 | 1687 | |
c629eae0 JJ |
1688 | outrel.r_offset = |
1689 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1690 | rel->r_offset); | |
1691 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1692 | skip = TRUE; |
0bb2d96a | 1693 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1694 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
1695 | outrel.r_offset += (input_section->output_section->vma |
1696 | + input_section->output_offset); | |
1697 | ||
1698 | if (skip) | |
0bb2d96a | 1699 | memset (&outrel, 0, sizeof outrel); |
252b5132 RH |
1700 | /* h->dynindx may be -1 if the symbol was marked to |
1701 | become local. */ | |
1702 | else if (h != NULL | |
1703 | && ((! info->symbolic && h->dynindx != -1) | |
1704 | || (h->elf_link_hash_flags | |
1705 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1706 | { | |
1707 | BFD_ASSERT (h->dynindx != -1); | |
252b5132 RH |
1708 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
1709 | outrel.r_addend = relocation + rel->r_addend; | |
1710 | } | |
1711 | else | |
1712 | { | |
1713 | if (r_type == R_68K_32) | |
1714 | { | |
b34976b6 | 1715 | relocate = TRUE; |
252b5132 RH |
1716 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); |
1717 | outrel.r_addend = relocation + rel->r_addend; | |
1718 | } | |
1719 | else | |
1720 | { | |
1721 | long indx; | |
1722 | ||
1723 | if (h == NULL) | |
1724 | sec = local_sections[r_symndx]; | |
1725 | else | |
1726 | { | |
1727 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
1728 | || (h->root.type | |
1729 | == bfd_link_hash_defweak)); | |
1730 | sec = h->root.u.def.section; | |
1731 | } | |
1732 | if (sec != NULL && bfd_is_abs_section (sec)) | |
1733 | indx = 0; | |
1734 | else if (sec == NULL || sec->owner == NULL) | |
1735 | { | |
1736 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1737 | return FALSE; |
252b5132 RH |
1738 | } |
1739 | else | |
1740 | { | |
1741 | asection *osec; | |
1742 | ||
1743 | osec = sec->output_section; | |
1744 | indx = elf_section_data (osec)->dynindx; | |
1745 | BFD_ASSERT (indx > 0); | |
1746 | } | |
1747 | ||
252b5132 RH |
1748 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
1749 | outrel.r_addend = relocation + rel->r_addend; | |
1750 | } | |
1751 | } | |
1752 | ||
947216bf AM |
1753 | loc = sreloc->contents; |
1754 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1755 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1756 | |
1757 | /* This reloc will be computed at runtime, so there's no | |
1758 | need to do anything now, except for R_68K_32 | |
1759 | relocations that have been turned into | |
1760 | R_68K_RELATIVE. */ | |
1761 | if (!relocate) | |
1762 | continue; | |
1763 | } | |
1764 | ||
1765 | break; | |
1766 | ||
1767 | case R_68K_GNU_VTINHERIT: | |
1768 | case R_68K_GNU_VTENTRY: | |
1769 | /* These are no-ops in the end. */ | |
1770 | continue; | |
1771 | ||
1772 | default: | |
1773 | break; | |
1774 | } | |
1775 | ||
1776 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1777 | contents, rel->r_offset, | |
1778 | relocation, rel->r_addend); | |
1779 | ||
1780 | if (r != bfd_reloc_ok) | |
1781 | { | |
1782 | switch (r) | |
1783 | { | |
1784 | default: | |
1785 | case bfd_reloc_outofrange: | |
1786 | abort (); | |
1787 | case bfd_reloc_overflow: | |
1788 | { | |
1789 | const char *name; | |
1790 | ||
1791 | if (h != NULL) | |
1792 | name = h->root.root.string; | |
1793 | else | |
1794 | { | |
1795 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1796 | symtab_hdr->sh_link, | |
1797 | sym->st_name); | |
1798 | if (name == NULL) | |
b34976b6 | 1799 | return FALSE; |
252b5132 RH |
1800 | if (*name == '\0') |
1801 | name = bfd_section_name (input_bfd, sec); | |
1802 | } | |
1803 | if (!(info->callbacks->reloc_overflow | |
1804 | (info, name, howto->name, (bfd_vma) 0, | |
1805 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 1806 | return FALSE; |
252b5132 RH |
1807 | } |
1808 | break; | |
1809 | } | |
1810 | } | |
1811 | } | |
1812 | ||
b34976b6 | 1813 | return TRUE; |
252b5132 RH |
1814 | } |
1815 | ||
1816 | /* Finish up dynamic symbol handling. We set the contents of various | |
1817 | dynamic sections here. */ | |
1818 | ||
b34976b6 | 1819 | static bfd_boolean |
252b5132 RH |
1820 | elf_m68k_finish_dynamic_symbol (output_bfd, info, h, sym) |
1821 | bfd *output_bfd; | |
1822 | struct bfd_link_info *info; | |
1823 | struct elf_link_hash_entry *h; | |
1824 | Elf_Internal_Sym *sym; | |
1825 | { | |
1826 | bfd *dynobj; | |
9e1281c7 | 1827 | int plt_off1, plt_off2, plt_off3; |
252b5132 RH |
1828 | |
1829 | dynobj = elf_hash_table (info)->dynobj; | |
1830 | ||
1831 | if (h->plt.offset != (bfd_vma) -1) | |
1832 | { | |
1833 | asection *splt; | |
1834 | asection *sgot; | |
1835 | asection *srela; | |
1836 | bfd_vma plt_index; | |
1837 | bfd_vma got_offset; | |
1838 | Elf_Internal_Rela rela; | |
947216bf | 1839 | bfd_byte *loc; |
252b5132 RH |
1840 | |
1841 | /* This symbol has an entry in the procedure linkage table. Set | |
1842 | it up. */ | |
1843 | ||
1844 | BFD_ASSERT (h->dynindx != -1); | |
1845 | ||
1846 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1847 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1848 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1849 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
1850 | ||
1851 | /* Get the index in the procedure linkage table which | |
1852 | corresponds to this symbol. This is the index of this symbol | |
1853 | in all the symbols for which we are making plt entries. The | |
1854 | first entry in the procedure linkage table is reserved. */ | |
9e1281c7 CM |
1855 | if ( CPU32_FLAG (output_bfd)) |
1856 | plt_index = h->plt.offset / PLT_CPU32_ENTRY_SIZE - 1; | |
1857 | else | |
1858 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
252b5132 RH |
1859 | |
1860 | /* Get the offset into the .got table of the entry that | |
1861 | corresponds to this function. Each .got entry is 4 bytes. | |
1862 | The first three are reserved. */ | |
1863 | got_offset = (plt_index + 3) * 4; | |
1864 | ||
9e1281c7 CM |
1865 | if ( CPU32_FLAG (output_bfd)) |
1866 | { | |
1867 | /* Fill in the entry in the procedure linkage table. */ | |
1868 | memcpy (splt->contents + h->plt.offset, elf_cpu32_plt_entry, | |
1869 | PLT_CPU32_ENTRY_SIZE); | |
1870 | plt_off1 = 4; | |
1871 | plt_off2 = 12; | |
1872 | plt_off3 = 18; | |
1873 | } | |
1874 | else | |
1875 | { | |
1876 | /* Fill in the entry in the procedure linkage table. */ | |
1877 | memcpy (splt->contents + h->plt.offset, elf_m68k_plt_entry, | |
1878 | PLT_ENTRY_SIZE); | |
1879 | plt_off1 = 4; | |
1880 | plt_off2 = 10; | |
1881 | plt_off3 = 16; | |
1882 | } | |
1883 | ||
252b5132 RH |
1884 | /* The offset is relative to the first extension word. */ |
1885 | bfd_put_32 (output_bfd, | |
1886 | (sgot->output_section->vma | |
1887 | + sgot->output_offset | |
1888 | + got_offset | |
1889 | - (splt->output_section->vma | |
1890 | + h->plt.offset + 2)), | |
9e1281c7 | 1891 | splt->contents + h->plt.offset + plt_off1); |
252b5132 RH |
1892 | |
1893 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
9e1281c7 CM |
1894 | splt->contents + h->plt.offset + plt_off2); |
1895 | bfd_put_32 (output_bfd, - (h->plt.offset + plt_off3), | |
1896 | splt->contents + h->plt.offset + plt_off3); | |
252b5132 RH |
1897 | |
1898 | /* Fill in the entry in the global offset table. */ | |
1899 | bfd_put_32 (output_bfd, | |
1900 | (splt->output_section->vma | |
1901 | + splt->output_offset | |
1902 | + h->plt.offset | |
1903 | + 8), | |
1904 | sgot->contents + got_offset); | |
1905 | ||
1906 | /* Fill in the entry in the .rela.plt section. */ | |
1907 | rela.r_offset = (sgot->output_section->vma | |
1908 | + sgot->output_offset | |
1909 | + got_offset); | |
1910 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT); | |
1911 | rela.r_addend = 0; | |
947216bf AM |
1912 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
1913 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
1914 | |
1915 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1916 | { | |
1917 | /* Mark the symbol as undefined, rather than as defined in | |
1918 | the .plt section. Leave the value alone. */ | |
1919 | sym->st_shndx = SHN_UNDEF; | |
1920 | } | |
1921 | } | |
1922 | ||
1923 | if (h->got.offset != (bfd_vma) -1) | |
1924 | { | |
1925 | asection *sgot; | |
1926 | asection *srela; | |
1927 | Elf_Internal_Rela rela; | |
947216bf | 1928 | bfd_byte *loc; |
252b5132 RH |
1929 | |
1930 | /* This symbol has an entry in the global offset table. Set it | |
1931 | up. */ | |
1932 | ||
1933 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1934 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1935 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1936 | ||
1937 | rela.r_offset = (sgot->output_section->vma | |
1938 | + sgot->output_offset | |
dc810e39 | 1939 | + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
1940 | |
1941 | /* If this is a -Bsymbolic link, and the symbol is defined | |
1942 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
1943 | the symbol was forced to be local because of a version file. | |
1944 | The entry in the global offset table will already have been | |
1945 | initialized in the relocate_section function. */ | |
1946 | if (info->shared | |
1947 | && (info->symbolic || h->dynindx == -1) | |
1948 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
1949 | { | |
1950 | rela.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
1951 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
1952 | (sgot->contents | |
dc810e39 | 1953 | + (h->got.offset &~ (bfd_vma) 1))); |
252b5132 RH |
1954 | } |
1955 | else | |
1956 | { | |
1957 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
dc810e39 | 1958 | sgot->contents + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
1959 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT); |
1960 | rela.r_addend = 0; | |
1961 | } | |
1962 | ||
947216bf AM |
1963 | loc = srela->contents; |
1964 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1965 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
1966 | } |
1967 | ||
1968 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
1969 | { | |
1970 | asection *s; | |
1971 | Elf_Internal_Rela rela; | |
947216bf | 1972 | bfd_byte *loc; |
252b5132 RH |
1973 | |
1974 | /* This symbol needs a copy reloc. Set it up. */ | |
1975 | ||
1976 | BFD_ASSERT (h->dynindx != -1 | |
1977 | && (h->root.type == bfd_link_hash_defined | |
1978 | || h->root.type == bfd_link_hash_defweak)); | |
1979 | ||
1980 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1981 | ".rela.bss"); | |
1982 | BFD_ASSERT (s != NULL); | |
1983 | ||
1984 | rela.r_offset = (h->root.u.def.value | |
1985 | + h->root.u.def.section->output_section->vma | |
1986 | + h->root.u.def.section->output_offset); | |
1987 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY); | |
1988 | rela.r_addend = 0; | |
947216bf AM |
1989 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1990 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
1991 | } |
1992 | ||
1993 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
1994 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
1995 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1996 | sym->st_shndx = SHN_ABS; | |
1997 | ||
b34976b6 | 1998 | return TRUE; |
252b5132 RH |
1999 | } |
2000 | ||
2001 | /* Finish up the dynamic sections. */ | |
2002 | ||
b34976b6 | 2003 | static bfd_boolean |
252b5132 RH |
2004 | elf_m68k_finish_dynamic_sections (output_bfd, info) |
2005 | bfd *output_bfd; | |
2006 | struct bfd_link_info *info; | |
2007 | { | |
2008 | bfd *dynobj; | |
2009 | asection *sgot; | |
2010 | asection *sdyn; | |
2011 | ||
2012 | dynobj = elf_hash_table (info)->dynobj; | |
2013 | ||
2014 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2015 | BFD_ASSERT (sgot != NULL); | |
2016 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2017 | ||
2018 | if (elf_hash_table (info)->dynamic_sections_created) | |
2019 | { | |
2020 | asection *splt; | |
2021 | Elf32_External_Dyn *dyncon, *dynconend; | |
2022 | ||
2023 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2024 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2025 | ||
2026 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
2027 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
2028 | for (; dyncon < dynconend; dyncon++) | |
2029 | { | |
2030 | Elf_Internal_Dyn dyn; | |
2031 | const char *name; | |
2032 | asection *s; | |
2033 | ||
2034 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2035 | ||
2036 | switch (dyn.d_tag) | |
2037 | { | |
2038 | default: | |
2039 | break; | |
2040 | ||
2041 | case DT_PLTGOT: | |
2042 | name = ".got"; | |
2043 | goto get_vma; | |
2044 | case DT_JMPREL: | |
2045 | name = ".rela.plt"; | |
2046 | get_vma: | |
2047 | s = bfd_get_section_by_name (output_bfd, name); | |
2048 | BFD_ASSERT (s != NULL); | |
2049 | dyn.d_un.d_ptr = s->vma; | |
2050 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2051 | break; | |
2052 | ||
2053 | case DT_PLTRELSZ: | |
2054 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2055 | BFD_ASSERT (s != NULL); | |
2056 | if (s->_cooked_size != 0) | |
2057 | dyn.d_un.d_val = s->_cooked_size; | |
2058 | else | |
2059 | dyn.d_un.d_val = s->_raw_size; | |
2060 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2061 | break; | |
2062 | ||
2063 | case DT_RELASZ: | |
2064 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2065 | not be included in the overall relocs (DT_RELA). | |
2066 | Therefore, we override the DT_RELASZ entry here to | |
2067 | make it not include the JMPREL relocs. Since the | |
2068 | linker script arranges for .rela.plt to follow all | |
2069 | other relocation sections, we don't have to worry | |
2070 | about changing the DT_RELA entry. */ | |
2071 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2072 | if (s != NULL) | |
2073 | { | |
2074 | if (s->_cooked_size != 0) | |
2075 | dyn.d_un.d_val -= s->_cooked_size; | |
2076 | else | |
2077 | dyn.d_un.d_val -= s->_raw_size; | |
2078 | } | |
2079 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2080 | break; | |
2081 | } | |
2082 | } | |
2083 | ||
2084 | /* Fill in the first entry in the procedure linkage table. */ | |
2085 | if (splt->_raw_size > 0) | |
2086 | { | |
9e1281c7 CM |
2087 | if (!CPU32_FLAG (output_bfd)) |
2088 | { | |
2089 | memcpy (splt->contents, elf_m68k_plt0_entry, PLT_ENTRY_SIZE); | |
2090 | bfd_put_32 (output_bfd, | |
2091 | (sgot->output_section->vma | |
2092 | + sgot->output_offset + 4 | |
2093 | - (splt->output_section->vma + 2)), | |
2094 | splt->contents + 4); | |
2095 | bfd_put_32 (output_bfd, | |
2096 | (sgot->output_section->vma | |
2097 | + sgot->output_offset + 8 | |
2098 | - (splt->output_section->vma + 10)), | |
2099 | splt->contents + 12); | |
c3668558 | 2100 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
9e1281c7 CM |
2101 | = PLT_ENTRY_SIZE; |
2102 | } | |
2103 | else /* cpu32 */ | |
2104 | { | |
2105 | memcpy (splt->contents, elf_cpu32_plt0_entry, PLT_CPU32_ENTRY_SIZE); | |
2106 | bfd_put_32 (output_bfd, | |
2107 | (sgot->output_section->vma | |
2108 | + sgot->output_offset + 4 | |
2109 | - (splt->output_section->vma + 2)), | |
2110 | splt->contents + 4); | |
2111 | bfd_put_32 (output_bfd, | |
2112 | (sgot->output_section->vma | |
2113 | + sgot->output_offset + 8 | |
2114 | - (splt->output_section->vma + 10)), | |
6091b433 | 2115 | splt->contents + 12); |
c3668558 | 2116 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
9e1281c7 CM |
2117 | = PLT_CPU32_ENTRY_SIZE; |
2118 | } | |
252b5132 | 2119 | } |
252b5132 RH |
2120 | } |
2121 | ||
2122 | /* Fill in the first three entries in the global offset table. */ | |
2123 | if (sgot->_raw_size > 0) | |
2124 | { | |
2125 | if (sdyn == NULL) | |
2126 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2127 | else | |
2128 | bfd_put_32 (output_bfd, | |
2129 | sdyn->output_section->vma + sdyn->output_offset, | |
2130 | sgot->contents); | |
2131 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2132 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2133 | } | |
2134 | ||
2135 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2136 | ||
b34976b6 | 2137 | return TRUE; |
252b5132 RH |
2138 | } |
2139 | ||
0752970e NC |
2140 | /* Given a .data section and a .emreloc in-memory section, store |
2141 | relocation information into the .emreloc section which can be | |
2142 | used at runtime to relocate the section. This is called by the | |
2143 | linker when the --embedded-relocs switch is used. This is called | |
2144 | after the add_symbols entry point has been called for all the | |
2145 | objects, and before the final_link entry point is called. */ | |
2146 | ||
b34976b6 | 2147 | bfd_boolean |
0752970e NC |
2148 | bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) |
2149 | bfd *abfd; | |
2150 | struct bfd_link_info *info; | |
2151 | asection *datasec; | |
2152 | asection *relsec; | |
2153 | char **errmsg; | |
2154 | { | |
2155 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc AM |
2156 | Elf_Internal_Sym *isymbuf = NULL; |
2157 | Elf_Internal_Rela *internal_relocs = NULL; | |
0752970e NC |
2158 | Elf_Internal_Rela *irel, *irelend; |
2159 | bfd_byte *p; | |
dc810e39 | 2160 | bfd_size_type amt; |
0752970e NC |
2161 | |
2162 | BFD_ASSERT (! info->relocateable); | |
2163 | ||
2164 | *errmsg = NULL; | |
2165 | ||
2166 | if (datasec->reloc_count == 0) | |
b34976b6 | 2167 | return TRUE; |
0752970e NC |
2168 | |
2169 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
9ad5cbcf | 2170 | |
0752970e NC |
2171 | /* Get a copy of the native relocations. */ |
2172 | internal_relocs = (_bfd_elf32_link_read_relocs | |
2173 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
2174 | info->keep_memory)); | |
2175 | if (internal_relocs == NULL) | |
2176 | goto error_return; | |
0752970e | 2177 | |
dc810e39 AM |
2178 | amt = (bfd_size_type) datasec->reloc_count * 12; |
2179 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
0752970e NC |
2180 | if (relsec->contents == NULL) |
2181 | goto error_return; | |
2182 | ||
2183 | p = relsec->contents; | |
2184 | ||
2185 | irelend = internal_relocs + datasec->reloc_count; | |
2186 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
2187 | { | |
2188 | asection *targetsec; | |
2189 | ||
2190 | /* We are going to write a four byte longword into the runtime | |
2191 | reloc section. The longword will be the address in the data | |
2192 | section which must be relocated. It is followed by the name | |
2193 | of the target section NUL-padded or truncated to 8 | |
2194 | characters. */ | |
2195 | ||
2196 | /* We can only relocate absolute longword relocs at run time. */ | |
2197 | if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32) | |
2198 | { | |
2199 | *errmsg = _("unsupported reloc type"); | |
2200 | bfd_set_error (bfd_error_bad_value); | |
2201 | goto error_return; | |
2202 | } | |
2203 | ||
2204 | /* Get the target section referred to by the reloc. */ | |
2205 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2206 | { | |
0752970e | 2207 | /* A local symbol. */ |
6cdc0ccc AM |
2208 | Elf_Internal_Sym *isym; |
2209 | ||
2210 | /* Read this BFD's local symbols if we haven't done so already. */ | |
2211 | if (isymbuf == NULL) | |
2212 | { | |
2213 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2214 | if (isymbuf == NULL) | |
2215 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2216 | symtab_hdr->sh_info, 0, | |
2217 | NULL, NULL, NULL); | |
2218 | if (isymbuf == NULL) | |
2219 | goto error_return; | |
2220 | } | |
0752970e | 2221 | |
6cdc0ccc AM |
2222 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
2223 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
0752970e NC |
2224 | } |
2225 | else | |
2226 | { | |
2227 | unsigned long indx; | |
2228 | struct elf_link_hash_entry *h; | |
2229 | ||
2230 | /* An external symbol. */ | |
2231 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2232 | h = elf_sym_hashes (abfd)[indx]; | |
2233 | BFD_ASSERT (h != NULL); | |
2234 | if (h->root.type == bfd_link_hash_defined | |
2235 | || h->root.type == bfd_link_hash_defweak) | |
2236 | targetsec = h->root.u.def.section; | |
2237 | else | |
2238 | targetsec = NULL; | |
2239 | } | |
2240 | ||
2241 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
2242 | memset (p + 4, 0, 8); | |
2243 | if (targetsec != NULL) | |
2244 | strncpy (p + 4, targetsec->output_section->name, 8); | |
2245 | } | |
c3668558 | 2246 | |
6cdc0ccc AM |
2247 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
2248 | free (isymbuf); | |
2249 | if (internal_relocs != NULL | |
2250 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2251 | free (internal_relocs); | |
b34976b6 | 2252 | return TRUE; |
0752970e NC |
2253 | |
2254 | error_return: | |
6cdc0ccc AM |
2255 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
2256 | free (isymbuf); | |
2257 | if (internal_relocs != NULL | |
2258 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2259 | free (internal_relocs); | |
b34976b6 | 2260 | return FALSE; |
0752970e NC |
2261 | } |
2262 | ||
aa91b392 | 2263 | static enum elf_reloc_type_class |
f51e552e AM |
2264 | elf32_m68k_reloc_type_class (rela) |
2265 | const Elf_Internal_Rela *rela; | |
aa91b392 | 2266 | { |
f51e552e | 2267 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
aa91b392 AS |
2268 | { |
2269 | case R_68K_RELATIVE: | |
2270 | return reloc_class_relative; | |
2271 | case R_68K_JMP_SLOT: | |
2272 | return reloc_class_plt; | |
2273 | case R_68K_COPY: | |
2274 | return reloc_class_copy; | |
2275 | default: | |
2276 | return reloc_class_normal; | |
2277 | } | |
2278 | } | |
2279 | ||
252b5132 RH |
2280 | #define TARGET_BIG_SYM bfd_elf32_m68k_vec |
2281 | #define TARGET_BIG_NAME "elf32-m68k" | |
2282 | #define ELF_MACHINE_CODE EM_68K | |
2283 | #define ELF_MAXPAGESIZE 0x2000 | |
2284 | #define elf_backend_create_dynamic_sections \ | |
2285 | _bfd_elf_create_dynamic_sections | |
2286 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2287 | elf_m68k_link_hash_table_create | |
2288 | #define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link | |
2289 | ||
2290 | #define elf_backend_check_relocs elf_m68k_check_relocs | |
2291 | #define elf_backend_adjust_dynamic_symbol \ | |
2292 | elf_m68k_adjust_dynamic_symbol | |
2293 | #define elf_backend_size_dynamic_sections \ | |
2294 | elf_m68k_size_dynamic_sections | |
2295 | #define elf_backend_relocate_section elf_m68k_relocate_section | |
2296 | #define elf_backend_finish_dynamic_symbol \ | |
2297 | elf_m68k_finish_dynamic_symbol | |
2298 | #define elf_backend_finish_dynamic_sections \ | |
2299 | elf_m68k_finish_dynamic_sections | |
2300 | #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook | |
2301 | #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook | |
9e1281c7 CM |
2302 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
2303 | elf32_m68k_merge_private_bfd_data | |
2304 | #define bfd_elf32_bfd_set_private_flags \ | |
2305 | elf32_m68k_set_private_flags | |
2306 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2307 | elf32_m68k_print_private_bfd_data | |
aa91b392 | 2308 | #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class |
9e1281c7 | 2309 | |
252b5132 | 2310 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 2311 | #define elf_backend_can_refcount 1 |
252b5132 RH |
2312 | #define elf_backend_want_got_plt 1 |
2313 | #define elf_backend_plt_readonly 1 | |
2314 | #define elf_backend_want_plt_sym 0 | |
2315 | #define elf_backend_got_header_size 12 | |
b491616a | 2316 | #define elf_backend_rela_normal 1 |
252b5132 RH |
2317 | |
2318 | #include "elf32-target.h" |