Commit | Line | Data |
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252b5132 | 1 | /* Motorola 68k series support for 32-bit ELF |
b2a8e766 | 2 | Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
266abb8f | 3 | 2004, 2005, 2006 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 | |
3e110533 | 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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" | |
266abb8f | 27 | #include "opcode/m68k.h" |
252b5132 RH |
28 | |
29 | static reloc_howto_type *reloc_type_lookup | |
30 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
31 | static void rtype_to_howto | |
947216bf | 32 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
252b5132 RH |
33 | static struct bfd_hash_entry *elf_m68k_link_hash_newfunc |
34 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
35 | static struct bfd_link_hash_table *elf_m68k_link_hash_table_create | |
36 | PARAMS ((bfd *)); | |
b34976b6 | 37 | static bfd_boolean elf_m68k_check_relocs |
252b5132 RH |
38 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
39 | const Elf_Internal_Rela *)); | |
40 | static asection *elf_m68k_gc_mark_hook | |
1e2f5b6e | 41 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
252b5132 | 42 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
b34976b6 | 43 | static bfd_boolean elf_m68k_gc_sweep_hook |
252b5132 RH |
44 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
45 | const Elf_Internal_Rela *)); | |
b34976b6 | 46 | static bfd_boolean elf_m68k_adjust_dynamic_symbol |
252b5132 | 47 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 48 | static bfd_boolean elf_m68k_size_dynamic_sections |
252b5132 | 49 | PARAMS ((bfd *, struct bfd_link_info *)); |
0cca5f05 AS |
50 | static bfd_boolean elf_m68k_discard_copies |
51 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
b34976b6 | 52 | static bfd_boolean elf_m68k_relocate_section |
252b5132 RH |
53 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
54 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 | 55 | static bfd_boolean elf_m68k_finish_dynamic_symbol |
252b5132 RH |
56 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
57 | Elf_Internal_Sym *)); | |
b34976b6 | 58 | static bfd_boolean elf_m68k_finish_dynamic_sections |
252b5132 RH |
59 | PARAMS ((bfd *, struct bfd_link_info *)); |
60 | ||
b34976b6 | 61 | static bfd_boolean elf32_m68k_set_private_flags |
9e1281c7 | 62 | PARAMS ((bfd *, flagword)); |
b34976b6 | 63 | static bfd_boolean elf32_m68k_merge_private_bfd_data |
9e1281c7 | 64 | PARAMS ((bfd *, bfd *)); |
b34976b6 | 65 | static bfd_boolean elf32_m68k_print_private_bfd_data |
9e1281c7 | 66 | PARAMS ((bfd *, PTR)); |
aa91b392 | 67 | static enum elf_reloc_type_class elf32_m68k_reloc_type_class |
f51e552e | 68 | PARAMS ((const Elf_Internal_Rela *)); |
9e1281c7 | 69 | |
252b5132 | 70 | static reloc_howto_type howto_table[] = { |
b34976b6 AM |
71 | HOWTO(R_68K_NONE, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", FALSE, 0, 0x00000000,FALSE), |
72 | HOWTO(R_68K_32, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", FALSE, 0, 0xffffffff,FALSE), | |
73 | HOWTO(R_68K_16, 0, 1,16, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", FALSE, 0, 0x0000ffff,FALSE), | |
74 | HOWTO(R_68K_8, 0, 0, 8, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", FALSE, 0, 0x000000ff,FALSE), | |
75 | HOWTO(R_68K_PC32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PC32", FALSE, 0, 0xffffffff,TRUE), | |
76 | HOWTO(R_68K_PC16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", FALSE, 0, 0x0000ffff,TRUE), | |
77 | HOWTO(R_68K_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", FALSE, 0, 0x000000ff,TRUE), | |
78 | HOWTO(R_68K_GOT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32", FALSE, 0, 0xffffffff,TRUE), | |
79 | HOWTO(R_68K_GOT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", FALSE, 0, 0x0000ffff,TRUE), | |
80 | HOWTO(R_68K_GOT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", FALSE, 0, 0x000000ff,TRUE), | |
81 | HOWTO(R_68K_GOT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32O", FALSE, 0, 0xffffffff,FALSE), | |
82 | HOWTO(R_68K_GOT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", FALSE, 0, 0x0000ffff,FALSE), | |
83 | HOWTO(R_68K_GOT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", FALSE, 0, 0x000000ff,FALSE), | |
84 | HOWTO(R_68K_PLT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32", FALSE, 0, 0xffffffff,TRUE), | |
85 | HOWTO(R_68K_PLT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", FALSE, 0, 0x0000ffff,TRUE), | |
86 | HOWTO(R_68K_PLT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", FALSE, 0, 0x000000ff,TRUE), | |
87 | HOWTO(R_68K_PLT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32O", FALSE, 0, 0xffffffff,FALSE), | |
88 | HOWTO(R_68K_PLT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", FALSE, 0, 0x0000ffff,FALSE), | |
89 | HOWTO(R_68K_PLT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", FALSE, 0, 0x000000ff,FALSE), | |
90 | HOWTO(R_68K_COPY, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", FALSE, 0, 0xffffffff,FALSE), | |
91 | 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), | |
92 | 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), | |
93 | HOWTO(R_68K_RELATIVE, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_RELATIVE", FALSE, 0, 0xffffffff,FALSE), | |
ae9a127f | 94 | /* GNU extension to record C++ vtable hierarchy. */ |
252b5132 RH |
95 | HOWTO (R_68K_GNU_VTINHERIT, /* type */ |
96 | 0, /* rightshift */ | |
97 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
98 | 0, /* bitsize */ | |
b34976b6 | 99 | FALSE, /* pc_relative */ |
252b5132 RH |
100 | 0, /* bitpos */ |
101 | complain_overflow_dont, /* complain_on_overflow */ | |
102 | NULL, /* special_function */ | |
103 | "R_68K_GNU_VTINHERIT", /* name */ | |
b34976b6 | 104 | FALSE, /* partial_inplace */ |
252b5132 RH |
105 | 0, /* src_mask */ |
106 | 0, /* dst_mask */ | |
b34976b6 | 107 | FALSE), |
ae9a127f | 108 | /* GNU extension to record C++ vtable member usage. */ |
252b5132 RH |
109 | HOWTO (R_68K_GNU_VTENTRY, /* type */ |
110 | 0, /* rightshift */ | |
111 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
112 | 0, /* bitsize */ | |
b34976b6 | 113 | FALSE, /* pc_relative */ |
252b5132 RH |
114 | 0, /* bitpos */ |
115 | complain_overflow_dont, /* complain_on_overflow */ | |
116 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
117 | "R_68K_GNU_VTENTRY", /* name */ | |
b34976b6 | 118 | FALSE, /* partial_inplace */ |
252b5132 RH |
119 | 0, /* src_mask */ |
120 | 0, /* dst_mask */ | |
b34976b6 | 121 | FALSE), |
252b5132 RH |
122 | }; |
123 | ||
124 | static void | |
125 | rtype_to_howto (abfd, cache_ptr, dst) | |
121089cb | 126 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
127 | arelent *cache_ptr; |
128 | Elf_Internal_Rela *dst; | |
129 | { | |
130 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_68K_max); | |
131 | cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)]; | |
132 | } | |
133 | ||
134 | #define elf_info_to_howto rtype_to_howto | |
135 | ||
136 | static const struct | |
137 | { | |
138 | bfd_reloc_code_real_type bfd_val; | |
139 | int elf_val; | |
140 | } reloc_map[] = { | |
141 | { BFD_RELOC_NONE, R_68K_NONE }, | |
142 | { BFD_RELOC_32, R_68K_32 }, | |
143 | { BFD_RELOC_16, R_68K_16 }, | |
144 | { BFD_RELOC_8, R_68K_8 }, | |
145 | { BFD_RELOC_32_PCREL, R_68K_PC32 }, | |
146 | { BFD_RELOC_16_PCREL, R_68K_PC16 }, | |
147 | { BFD_RELOC_8_PCREL, R_68K_PC8 }, | |
148 | { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 }, | |
149 | { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 }, | |
150 | { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 }, | |
151 | { BFD_RELOC_32_GOTOFF, R_68K_GOT32O }, | |
152 | { BFD_RELOC_16_GOTOFF, R_68K_GOT16O }, | |
153 | { BFD_RELOC_8_GOTOFF, R_68K_GOT8O }, | |
154 | { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 }, | |
155 | { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 }, | |
156 | { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 }, | |
157 | { BFD_RELOC_32_PLTOFF, R_68K_PLT32O }, | |
158 | { BFD_RELOC_16_PLTOFF, R_68K_PLT16O }, | |
159 | { BFD_RELOC_8_PLTOFF, R_68K_PLT8O }, | |
160 | { BFD_RELOC_NONE, R_68K_COPY }, | |
161 | { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT }, | |
162 | { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT }, | |
163 | { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE }, | |
164 | { BFD_RELOC_CTOR, R_68K_32 }, | |
165 | { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT }, | |
166 | { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY }, | |
167 | }; | |
168 | ||
169 | static reloc_howto_type * | |
170 | reloc_type_lookup (abfd, code) | |
121089cb | 171 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
172 | bfd_reloc_code_real_type code; |
173 | { | |
174 | unsigned int i; | |
175 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
176 | { | |
177 | if (reloc_map[i].bfd_val == code) | |
178 | return &howto_table[reloc_map[i].elf_val]; | |
179 | } | |
180 | return 0; | |
181 | } | |
182 | ||
183 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup | |
184 | #define ELF_ARCH bfd_arch_m68k | |
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 | ||
238d258f NC |
221 | |
222 | #define CFV4E_PLT_ENTRY_SIZE 24 | |
223 | ||
266abb8f | 224 | #define CFV4E_FLAG(abfd) (elf_elfheader (abfd)->e_flags & EF_M68K_CFV4E) |
238d258f NC |
225 | |
226 | static const bfd_byte elf_cfv4e_plt0_entry[CFV4E_PLT_ENTRY_SIZE] = | |
227 | { | |
228 | 0x20, 0x3c, | |
229 | 0, 0, 0, 0, /* Replaced with offset to .got + 4. */ | |
230 | 0x2f, 0x3b, 0x08, 0xfa, /* move.l (%pc,addr),-(%sp) */ | |
231 | 0x20, 0x3c, | |
232 | 0, 0, 0, 0, /* Replaced with offset to .got + 8. */ | |
233 | 0x20, 0x7b, 0x08, 0x00, /* move.l (%pc,%d0:l), %a0 */ | |
234 | 0x4e, 0xd0, /* jmp (%a0) */ | |
235 | 0x4e, 0x71 /* nop */ | |
236 | }; | |
237 | ||
238 | /* Subsequent entries in a procedure linkage table look like this. */ | |
239 | ||
240 | static const bfd_byte elf_cfv4e_plt_entry[CFV4E_PLT_ENTRY_SIZE] = | |
241 | { | |
242 | 0x20, 0x3c, | |
243 | 0, 0, 0, 0, /* Replaced with offset to symbol's .got entry. */ | |
244 | 0x20, 0x7b, 0x08, 0x00, /* move.l (%pc,%d0:l), %a0 */ | |
245 | 0x4e, 0xd0, /* jmp (%a0) */ | |
246 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
247 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
248 | 0x60, 0xff, /* bra.l .plt */ | |
249 | 0, 0, 0, 0 /* Replaced with offset to start of .plt. */ | |
250 | }; | |
251 | ||
266abb8f | 252 | #define CPU32_FLAG(abfd) (elf_elfheader (abfd)->e_flags & EF_M68K_CPU32) |
9e1281c7 CM |
253 | |
254 | #define PLT_CPU32_ENTRY_SIZE 24 | |
255 | /* Procedure linkage table entries for the cpu32 */ | |
256 | static const bfd_byte elf_cpu32_plt0_entry[PLT_CPU32_ENTRY_SIZE] = | |
257 | { | |
6091b433 | 258 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ |
9e1281c7 | 259 | 0, 0, 0, 0, /* replaced with offset to .got + 4. */ |
6091b433 | 260 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
c3668558 | 261 | 0, 0, 0, 0, /* replace with offset to .got +8. */ |
6091b433 | 262 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 CM |
263 | 0, 0, 0, 0, /* pad out to 24 bytes. */ |
264 | 0, 0 | |
265 | }; | |
266 | ||
267 | static const bfd_byte elf_cpu32_plt_entry[PLT_CPU32_ENTRY_SIZE] = | |
268 | { | |
1ca42bad | 269 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
9e1281c7 | 270 | 0, 0, 0, 0, /* replaced with offset to symbol's .got entry. */ |
1ca42bad | 271 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 CM |
272 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
273 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
274 | 0x60, 0xff, /* bra.l .plt */ | |
275 | 0, 0, 0, 0, /* replaced with offset to start of .plt. */ | |
276 | 0, 0 | |
277 | }; | |
278 | ||
252b5132 RH |
279 | /* The m68k linker needs to keep track of the number of relocs that it |
280 | decides to copy in check_relocs for each symbol. This is so that it | |
281 | can discard PC relative relocs if it doesn't need them when linking | |
282 | with -Bsymbolic. We store the information in a field extending the | |
283 | regular ELF linker hash table. */ | |
284 | ||
285 | /* This structure keeps track of the number of PC relative relocs we have | |
286 | copied for a given symbol. */ | |
287 | ||
288 | struct elf_m68k_pcrel_relocs_copied | |
289 | { | |
290 | /* Next section. */ | |
291 | struct elf_m68k_pcrel_relocs_copied *next; | |
292 | /* A section in dynobj. */ | |
293 | asection *section; | |
294 | /* Number of relocs copied in this section. */ | |
295 | bfd_size_type count; | |
296 | }; | |
297 | ||
298 | /* m68k ELF linker hash entry. */ | |
299 | ||
300 | struct elf_m68k_link_hash_entry | |
301 | { | |
302 | struct elf_link_hash_entry root; | |
303 | ||
304 | /* Number of PC relative relocs copied for this symbol. */ | |
305 | struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied; | |
306 | }; | |
307 | ||
0cca5f05 AS |
308 | #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent)) |
309 | ||
252b5132 RH |
310 | /* m68k ELF linker hash table. */ |
311 | ||
312 | struct elf_m68k_link_hash_table | |
313 | { | |
314 | struct elf_link_hash_table root; | |
b6152c34 AS |
315 | |
316 | /* Small local sym to section mapping cache. */ | |
317 | struct sym_sec_cache sym_sec; | |
252b5132 RH |
318 | }; |
319 | ||
252b5132 RH |
320 | /* Get the m68k ELF linker hash table from a link_info structure. */ |
321 | ||
322 | #define elf_m68k_hash_table(p) \ | |
323 | ((struct elf_m68k_link_hash_table *) (p)->hash) | |
324 | ||
325 | /* Create an entry in an m68k ELF linker hash table. */ | |
326 | ||
327 | static struct bfd_hash_entry * | |
328 | elf_m68k_link_hash_newfunc (entry, table, string) | |
329 | struct bfd_hash_entry *entry; | |
330 | struct bfd_hash_table *table; | |
331 | const char *string; | |
332 | { | |
0cca5f05 | 333 | struct bfd_hash_entry *ret = entry; |
252b5132 RH |
334 | |
335 | /* Allocate the structure if it has not already been allocated by a | |
336 | subclass. */ | |
0cca5f05 AS |
337 | if (ret == NULL) |
338 | ret = bfd_hash_allocate (table, | |
339 | sizeof (struct elf_m68k_link_hash_entry)); | |
340 | if (ret == NULL) | |
341 | return ret; | |
252b5132 RH |
342 | |
343 | /* Call the allocation method of the superclass. */ | |
0cca5f05 AS |
344 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); |
345 | if (ret != NULL) | |
346 | elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
252b5132 | 347 | |
0cca5f05 | 348 | return ret; |
252b5132 RH |
349 | } |
350 | ||
351 | /* Create an m68k ELF linker hash table. */ | |
352 | ||
353 | static struct bfd_link_hash_table * | |
354 | elf_m68k_link_hash_table_create (abfd) | |
355 | bfd *abfd; | |
356 | { | |
357 | struct elf_m68k_link_hash_table *ret; | |
dc810e39 | 358 | bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table); |
252b5132 | 359 | |
e2d34d7d | 360 | ret = (struct elf_m68k_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
361 | if (ret == (struct elf_m68k_link_hash_table *) NULL) |
362 | return NULL; | |
363 | ||
66eb6687 AM |
364 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
365 | elf_m68k_link_hash_newfunc, | |
366 | sizeof (struct elf_m68k_link_hash_entry))) | |
252b5132 | 367 | { |
e2d34d7d | 368 | free (ret); |
252b5132 RH |
369 | return NULL; |
370 | } | |
371 | ||
b6152c34 AS |
372 | ret->sym_sec.abfd = NULL; |
373 | ||
252b5132 RH |
374 | return &ret->root.root; |
375 | } | |
376 | ||
266abb8f NS |
377 | /* Set the right machine number. */ |
378 | ||
379 | static bfd_boolean | |
380 | elf32_m68k_object_p (bfd *abfd) | |
381 | { | |
382 | unsigned int mach = 0; | |
383 | unsigned features = 0; | |
384 | flagword eflags = elf_elfheader (abfd)->e_flags; | |
385 | ||
386 | if (eflags & EF_M68K_M68000) | |
387 | features |= m68000; | |
388 | else if (eflags & EF_M68K_CPU32) | |
389 | features |= cpu32; | |
390 | else if (eflags & EF_M68K_ISA_MASK) | |
391 | { | |
392 | switch (eflags & EF_M68K_ISA_MASK) | |
393 | { | |
0b2e31dc | 394 | case EF_M68K_ISA_A_NODIV: |
266abb8f NS |
395 | features |= mcfisa_a; |
396 | break; | |
0b2e31dc NS |
397 | case EF_M68K_ISA_A: |
398 | features |= mcfisa_a|mcfhwdiv; | |
399 | break; | |
400 | case EF_M68K_ISA_A_PLUS: | |
401 | features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp; | |
402 | break; | |
403 | case EF_M68K_ISA_B_NOUSP: | |
404 | features |= mcfisa_a|mcfisa_b|mcfhwdiv; | |
405 | break; | |
406 | case EF_M68K_ISA_B: | |
407 | features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp; | |
408 | break; | |
266abb8f | 409 | } |
266abb8f NS |
410 | switch (eflags & EF_M68K_MAC_MASK) |
411 | { | |
412 | case EF_M68K_MAC: | |
413 | features |= mcfmac; | |
414 | break; | |
415 | case EF_M68K_EMAC: | |
416 | features |= mcfemac; | |
417 | break; | |
418 | } | |
266abb8f NS |
419 | if (eflags & EF_M68K_FLOAT) |
420 | features |= cfloat; | |
421 | } | |
422 | ||
423 | mach = bfd_m68k_features_to_mach (features); | |
424 | bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach); | |
425 | ||
426 | return TRUE; | |
427 | } | |
428 | ||
ae9a127f | 429 | /* Keep m68k-specific flags in the ELF header. */ |
b34976b6 | 430 | static bfd_boolean |
9e1281c7 CM |
431 | elf32_m68k_set_private_flags (abfd, flags) |
432 | bfd *abfd; | |
433 | flagword flags; | |
434 | { | |
435 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
436 | elf_flags_init (abfd) = TRUE; |
437 | return TRUE; | |
9e1281c7 CM |
438 | } |
439 | ||
9e1281c7 CM |
440 | /* Merge backend specific data from an object file to the output |
441 | object file when linking. */ | |
b34976b6 | 442 | static bfd_boolean |
9e1281c7 CM |
443 | elf32_m68k_merge_private_bfd_data (ibfd, obfd) |
444 | bfd *ibfd; | |
445 | bfd *obfd; | |
446 | { | |
447 | flagword out_flags; | |
448 | flagword in_flags; | |
266abb8f NS |
449 | unsigned in_mach, out_mach; |
450 | ||
9e1281c7 CM |
451 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
452 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
266abb8f NS |
453 | return FALSE; |
454 | ||
455 | in_mach = bfd_get_mach (ibfd); | |
456 | out_mach = bfd_get_mach (obfd); | |
457 | if (!out_mach || !in_mach) | |
458 | /* One is unknown, copy the input machine. */ | |
459 | out_mach = in_mach; | |
460 | else if (in_mach != out_mach) | |
461 | { | |
462 | if (in_mach <= bfd_mach_m68060 && out_mach <= bfd_mach_m68060) | |
463 | { | |
464 | /* Merge m68k machine. */ | |
465 | if (in_mach > out_mach) | |
466 | out_mach = in_mach; | |
467 | } | |
0b2e31dc NS |
468 | else if (in_mach >= bfd_mach_mcf_isa_a_nodiv |
469 | && out_mach >= bfd_mach_mcf_isa_a_nodiv) | |
266abb8f NS |
470 | /* Merge cf machine. */ |
471 | out_mach = bfd_m68k_features_to_mach | |
472 | (bfd_m68k_mach_to_features (in_mach) | |
473 | | bfd_m68k_mach_to_features (out_mach)); | |
474 | else | |
475 | /* They are incompatible. */ | |
476 | return FALSE; | |
477 | } | |
478 | bfd_set_arch_mach (obfd, bfd_arch_m68k, out_mach); | |
479 | ||
9e1281c7 CM |
480 | in_flags = elf_elfheader (ibfd)->e_flags; |
481 | out_flags = elf_elfheader (obfd)->e_flags; | |
482 | ||
483 | if (!elf_flags_init (obfd)) | |
484 | { | |
b34976b6 | 485 | elf_flags_init (obfd) = TRUE; |
266abb8f NS |
486 | out_flags = in_flags; |
487 | } | |
488 | else | |
489 | { | |
0b2e31dc NS |
490 | flagword isa_in = in_flags & EF_M68K_ISA_MASK; |
491 | flagword isa_out = out_flags & EF_M68K_ISA_MASK; | |
492 | ||
493 | ||
266abb8f NS |
494 | /* Copy legacy flags. */ |
495 | out_flags |= in_flags & (EF_M68K_CPU32 | EF_M68K_M68000 | EF_M68K_CFV4E); | |
496 | ||
0b2e31dc | 497 | if ((isa_in | isa_out) |
266abb8f NS |
498 | && ((in_flags | out_flags) & (EF_M68K_CPU32 | EF_M68K_M68000))) |
499 | /* Mixing m68k and cf is not allowed */ | |
500 | return FALSE; | |
501 | ||
0b2e31dc | 502 | if (isa_in) |
266abb8f | 503 | { |
0b2e31dc | 504 | if (isa_out) |
266abb8f | 505 | { |
0b2e31dc NS |
506 | if (isa_out == EF_M68K_ISA_A_PLUS |
507 | && (isa_in == EF_M68K_ISA_B_NOUSP | |
508 | || isa_in == EF_M68K_ISA_B)) | |
509 | /* Cannot mix A+ and B */ | |
510 | return FALSE; | |
511 | if (isa_in == EF_M68K_ISA_A_PLUS | |
512 | && (isa_out == EF_M68K_ISA_B_NOUSP | |
513 | || isa_out == EF_M68K_ISA_B)) | |
514 | /* Cannot mix B and A+ */ | |
515 | return FALSE; | |
516 | ||
517 | if (isa_in > isa_out) | |
518 | out_flags ^= isa_in ^ isa_out; | |
519 | ||
520 | out_flags |= in_flags & EF_M68K_FLOAT; | |
266abb8f NS |
521 | if (in_flags & EF_M68K_MAC_MASK) |
522 | { | |
523 | if (!(out_flags & EF_M68K_MAC_MASK)) | |
524 | out_flags |= in_flags & EF_M68K_MAC_MASK; | |
525 | else if ((out_flags & EF_M68K_MAC_MASK) | |
526 | != (in_flags & EF_M68K_MAC_MASK)) | |
527 | /* Cannot mix MACs */ | |
528 | return FALSE; | |
529 | } | |
530 | } | |
531 | else | |
532 | { | |
533 | /* Copy the coldfire bits. */ | |
534 | out_flags &= ~EF_M68K_CF_MASK; | |
535 | out_flags |= in_flags & EF_M68K_CF_MASK; | |
536 | } | |
537 | } | |
9e1281c7 | 538 | } |
266abb8f | 539 | elf_elfheader (obfd)->e_flags = out_flags; |
9e1281c7 | 540 | |
b34976b6 | 541 | return TRUE; |
9e1281c7 CM |
542 | } |
543 | ||
ae9a127f | 544 | /* Display the flags field. */ |
b34976b6 | 545 | static bfd_boolean |
9e1281c7 CM |
546 | elf32_m68k_print_private_bfd_data (abfd, ptr) |
547 | bfd *abfd; | |
548 | PTR ptr; | |
549 | { | |
550 | FILE *file = (FILE *) ptr; | |
266abb8f | 551 | flagword eflags = elf_elfheader (abfd)->e_flags; |
9e1281c7 CM |
552 | |
553 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
554 | ||
555 | /* Print normal ELF private data. */ | |
556 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
557 | ||
558 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
559 | ||
560 | /* xgettext:c-format */ | |
517662d4 | 561 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
9e1281c7 | 562 | |
266abb8f NS |
563 | if (eflags & EF_M68K_CPU32) |
564 | fprintf (file, " [cpu32]"); | |
565 | ||
566 | if (eflags & EF_M68K_M68000) | |
567 | fprintf (file, " [m68000]"); | |
9e1281c7 | 568 | |
266abb8f NS |
569 | if (eflags & EF_M68K_CFV4E) |
570 | fprintf (file, " [cfv4e]"); | |
76f57f3a | 571 | |
266abb8f NS |
572 | if (eflags & EF_M68K_ISA_MASK) |
573 | { | |
574 | char const *isa = _("unknown"); | |
575 | char const *mac = _("unknown"); | |
0b2e31dc | 576 | char const *additional = ""; |
266abb8f NS |
577 | |
578 | switch (eflags & EF_M68K_ISA_MASK) | |
579 | { | |
0b2e31dc NS |
580 | case EF_M68K_ISA_A_NODIV: |
581 | isa = "A"; | |
582 | additional = " [nodiv]"; | |
583 | break; | |
266abb8f NS |
584 | case EF_M68K_ISA_A: |
585 | isa = "A"; | |
586 | break; | |
587 | case EF_M68K_ISA_A_PLUS: | |
588 | isa = "A+"; | |
589 | break; | |
0b2e31dc NS |
590 | case EF_M68K_ISA_B_NOUSP: |
591 | isa = "B"; | |
592 | additional = " [nousp]"; | |
593 | break; | |
266abb8f NS |
594 | case EF_M68K_ISA_B: |
595 | isa = "B"; | |
596 | break; | |
597 | } | |
0b2e31dc NS |
598 | fprintf (file, " [isa %s]%s", isa, additional); |
599 | if (eflags & EF_M68K_FLOAT) | |
600 | fprintf (file, " [float]"); | |
266abb8f NS |
601 | switch (eflags & EF_M68K_MAC_MASK) |
602 | { | |
603 | case 0: | |
604 | mac = NULL; | |
605 | break; | |
606 | case EF_M68K_MAC: | |
607 | mac = "mac"; | |
608 | break; | |
609 | case EF_M68K_EMAC: | |
610 | mac = "emac"; | |
611 | break; | |
612 | } | |
613 | if (mac) | |
614 | fprintf (file, " [%s]", mac); | |
266abb8f NS |
615 | } |
616 | ||
9e1281c7 CM |
617 | fputc ('\n', file); |
618 | ||
b34976b6 | 619 | return TRUE; |
9e1281c7 | 620 | } |
252b5132 RH |
621 | /* Look through the relocs for a section during the first phase, and |
622 | allocate space in the global offset table or procedure linkage | |
623 | table. */ | |
624 | ||
b34976b6 | 625 | static bfd_boolean |
252b5132 RH |
626 | elf_m68k_check_relocs (abfd, info, sec, relocs) |
627 | bfd *abfd; | |
628 | struct bfd_link_info *info; | |
629 | asection *sec; | |
630 | const Elf_Internal_Rela *relocs; | |
631 | { | |
632 | bfd *dynobj; | |
633 | Elf_Internal_Shdr *symtab_hdr; | |
634 | struct elf_link_hash_entry **sym_hashes; | |
635 | bfd_signed_vma *local_got_refcounts; | |
636 | const Elf_Internal_Rela *rel; | |
637 | const Elf_Internal_Rela *rel_end; | |
638 | asection *sgot; | |
639 | asection *srelgot; | |
640 | asection *sreloc; | |
641 | ||
1049f94e | 642 | if (info->relocatable) |
b34976b6 | 643 | return TRUE; |
252b5132 RH |
644 | |
645 | dynobj = elf_hash_table (info)->dynobj; | |
646 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
647 | sym_hashes = elf_sym_hashes (abfd); | |
648 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
649 | ||
650 | sgot = NULL; | |
651 | srelgot = NULL; | |
652 | sreloc = NULL; | |
653 | ||
654 | rel_end = relocs + sec->reloc_count; | |
655 | for (rel = relocs; rel < rel_end; rel++) | |
656 | { | |
657 | unsigned long r_symndx; | |
658 | struct elf_link_hash_entry *h; | |
659 | ||
660 | r_symndx = ELF32_R_SYM (rel->r_info); | |
661 | ||
662 | if (r_symndx < symtab_hdr->sh_info) | |
663 | h = NULL; | |
664 | else | |
973a3492 L |
665 | { |
666 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
667 | while (h->root.type == bfd_link_hash_indirect | |
668 | || h->root.type == bfd_link_hash_warning) | |
669 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
670 | } | |
252b5132 RH |
671 | |
672 | switch (ELF32_R_TYPE (rel->r_info)) | |
673 | { | |
674 | case R_68K_GOT8: | |
675 | case R_68K_GOT16: | |
676 | case R_68K_GOT32: | |
677 | if (h != NULL | |
678 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
679 | break; | |
680 | /* Fall through. */ | |
681 | case R_68K_GOT8O: | |
682 | case R_68K_GOT16O: | |
683 | case R_68K_GOT32O: | |
684 | /* This symbol requires a global offset table entry. */ | |
685 | ||
686 | if (dynobj == NULL) | |
687 | { | |
688 | /* Create the .got section. */ | |
689 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
690 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 691 | return FALSE; |
252b5132 RH |
692 | } |
693 | ||
694 | if (sgot == NULL) | |
695 | { | |
696 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
697 | BFD_ASSERT (sgot != NULL); | |
698 | } | |
699 | ||
700 | if (srelgot == NULL | |
701 | && (h != NULL || info->shared)) | |
702 | { | |
703 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
704 | if (srelgot == NULL) | |
705 | { | |
3496cb2a L |
706 | srelgot = bfd_make_section_with_flags (dynobj, |
707 | ".rela.got", | |
708 | (SEC_ALLOC | |
709 | | SEC_LOAD | |
710 | | SEC_HAS_CONTENTS | |
711 | | SEC_IN_MEMORY | |
712 | | SEC_LINKER_CREATED | |
713 | | SEC_READONLY)); | |
252b5132 | 714 | if (srelgot == NULL |
252b5132 | 715 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 716 | return FALSE; |
252b5132 RH |
717 | } |
718 | } | |
719 | ||
720 | if (h != NULL) | |
721 | { | |
51b64d56 | 722 | if (h->got.refcount == 0) |
252b5132 | 723 | { |
252b5132 | 724 | /* Make sure this symbol is output as a dynamic symbol. */ |
b6152c34 | 725 | if (h->dynindx == -1 |
f5385ebf | 726 | && !h->forced_local) |
252b5132 | 727 | { |
c152c796 | 728 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 729 | return FALSE; |
252b5132 RH |
730 | } |
731 | ||
732 | /* Allocate space in the .got section. */ | |
eea6121a | 733 | sgot->size += 4; |
252b5132 | 734 | /* Allocate relocation space. */ |
eea6121a | 735 | srelgot->size += sizeof (Elf32_External_Rela); |
252b5132 | 736 | } |
51b64d56 | 737 | h->got.refcount++; |
252b5132 RH |
738 | } |
739 | else | |
740 | { | |
741 | /* This is a global offset table entry for a local symbol. */ | |
742 | if (local_got_refcounts == NULL) | |
743 | { | |
dc810e39 | 744 | bfd_size_type size; |
252b5132 | 745 | |
dc810e39 AM |
746 | size = symtab_hdr->sh_info; |
747 | size *= sizeof (bfd_signed_vma); | |
252b5132 | 748 | local_got_refcounts = ((bfd_signed_vma *) |
51b64d56 | 749 | bfd_zalloc (abfd, size)); |
252b5132 | 750 | if (local_got_refcounts == NULL) |
b34976b6 | 751 | return FALSE; |
252b5132 | 752 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 753 | } |
51b64d56 | 754 | if (local_got_refcounts[r_symndx] == 0) |
252b5132 | 755 | { |
eea6121a | 756 | sgot->size += 4; |
252b5132 RH |
757 | if (info->shared) |
758 | { | |
759 | /* If we are generating a shared object, we need to | |
760 | output a R_68K_RELATIVE reloc so that the dynamic | |
761 | linker can adjust this GOT entry. */ | |
eea6121a | 762 | srelgot->size += sizeof (Elf32_External_Rela); |
252b5132 RH |
763 | } |
764 | } | |
51b64d56 | 765 | local_got_refcounts[r_symndx]++; |
252b5132 RH |
766 | } |
767 | break; | |
768 | ||
769 | case R_68K_PLT8: | |
770 | case R_68K_PLT16: | |
771 | case R_68K_PLT32: | |
772 | /* This symbol requires a procedure linkage table entry. We | |
773 | actually build the entry in adjust_dynamic_symbol, | |
774 | because this might be a case of linking PIC code which is | |
775 | never referenced by a dynamic object, in which case we | |
776 | don't need to generate a procedure linkage table entry | |
777 | after all. */ | |
778 | ||
779 | /* If this is a local symbol, we resolve it directly without | |
780 | creating a procedure linkage table entry. */ | |
781 | if (h == NULL) | |
782 | continue; | |
783 | ||
f5385ebf | 784 | h->needs_plt = 1; |
51b64d56 | 785 | h->plt.refcount++; |
252b5132 RH |
786 | break; |
787 | ||
788 | case R_68K_PLT8O: | |
789 | case R_68K_PLT16O: | |
790 | case R_68K_PLT32O: | |
791 | /* This symbol requires a procedure linkage table entry. */ | |
792 | ||
793 | if (h == NULL) | |
794 | { | |
795 | /* It does not make sense to have this relocation for a | |
796 | local symbol. FIXME: does it? How to handle it if | |
797 | it does make sense? */ | |
798 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 799 | return FALSE; |
252b5132 RH |
800 | } |
801 | ||
802 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 803 | if (h->dynindx == -1 |
f5385ebf | 804 | && !h->forced_local) |
252b5132 | 805 | { |
c152c796 | 806 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 807 | return FALSE; |
252b5132 RH |
808 | } |
809 | ||
f5385ebf | 810 | h->needs_plt = 1; |
51b64d56 | 811 | h->plt.refcount++; |
252b5132 RH |
812 | break; |
813 | ||
814 | case R_68K_PC8: | |
815 | case R_68K_PC16: | |
816 | case R_68K_PC32: | |
817 | /* If we are creating a shared library and this is not a local | |
818 | symbol, we need to copy the reloc into the shared library. | |
819 | However when linking with -Bsymbolic and this is a global | |
820 | symbol which is defined in an object we are including in the | |
821 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
822 | reloc directly. At this point we have not seen all the input | |
823 | files, so it is possible that DEF_REGULAR is not set now but | |
824 | will be set later (it is never cleared). We account for that | |
825 | possibility below by storing information in the | |
826 | pcrel_relocs_copied field of the hash table entry. */ | |
827 | if (!(info->shared | |
828 | && (sec->flags & SEC_ALLOC) != 0 | |
829 | && h != NULL | |
830 | && (!info->symbolic | |
b6152c34 | 831 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 832 | || !h->def_regular))) |
252b5132 RH |
833 | { |
834 | if (h != NULL) | |
835 | { | |
836 | /* Make sure a plt entry is created for this symbol if | |
837 | it turns out to be a function defined by a dynamic | |
838 | object. */ | |
51b64d56 | 839 | h->plt.refcount++; |
252b5132 RH |
840 | } |
841 | break; | |
842 | } | |
843 | /* Fall through. */ | |
844 | case R_68K_8: | |
845 | case R_68K_16: | |
846 | case R_68K_32: | |
847 | if (h != NULL) | |
848 | { | |
849 | /* Make sure a plt entry is created for this symbol if it | |
850 | turns out to be a function defined by a dynamic object. */ | |
51b64d56 | 851 | h->plt.refcount++; |
252b5132 RH |
852 | } |
853 | ||
854 | /* If we are creating a shared library, we need to copy the | |
855 | reloc into the shared library. */ | |
856 | if (info->shared | |
857 | && (sec->flags & SEC_ALLOC) != 0) | |
858 | { | |
859 | /* When creating a shared object, we must copy these | |
860 | reloc types into the output file. We create a reloc | |
861 | section in dynobj and make room for this reloc. */ | |
862 | if (sreloc == NULL) | |
863 | { | |
864 | const char *name; | |
865 | ||
866 | name = (bfd_elf_string_from_elf_section | |
867 | (abfd, | |
868 | elf_elfheader (abfd)->e_shstrndx, | |
869 | elf_section_data (sec)->rel_hdr.sh_name)); | |
870 | if (name == NULL) | |
b34976b6 | 871 | return FALSE; |
252b5132 RH |
872 | |
873 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
874 | && strcmp (bfd_get_section_name (abfd, sec), | |
875 | name + 5) == 0); | |
876 | ||
877 | sreloc = bfd_get_section_by_name (dynobj, name); | |
878 | if (sreloc == NULL) | |
879 | { | |
3496cb2a L |
880 | sreloc = bfd_make_section_with_flags (dynobj, |
881 | name, | |
882 | (SEC_ALLOC | |
883 | | SEC_LOAD | |
884 | | SEC_HAS_CONTENTS | |
885 | | SEC_IN_MEMORY | |
886 | | SEC_LINKER_CREATED | |
887 | | SEC_READONLY)); | |
252b5132 | 888 | if (sreloc == NULL |
252b5132 | 889 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) |
b34976b6 | 890 | return FALSE; |
252b5132 | 891 | } |
d2ff124f | 892 | elf_section_data (sec)->sreloc = sreloc; |
252b5132 RH |
893 | } |
894 | ||
3e829b4a AS |
895 | if (sec->flags & SEC_READONLY |
896 | /* Don't set DF_TEXTREL yet for PC relative | |
897 | relocations, they might be discarded later. */ | |
898 | && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8 | |
899 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
900 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)) | |
901 | info->flags |= DF_TEXTREL; | |
902 | ||
eea6121a | 903 | sreloc->size += sizeof (Elf32_External_Rela); |
252b5132 | 904 | |
b6152c34 AS |
905 | /* We count the number of PC relative relocations we have |
906 | entered for this symbol, so that we can discard them | |
907 | again if, in the -Bsymbolic case, the symbol is later | |
908 | defined by a regular object, or, in the normal shared | |
909 | case, the symbol is forced to be local. Note that this | |
910 | function is only called if we are using an m68kelf linker | |
911 | hash table, which means that h is really a pointer to an | |
252b5132 | 912 | elf_m68k_link_hash_entry. */ |
b6152c34 AS |
913 | if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8 |
914 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
915 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32) | |
252b5132 | 916 | { |
252b5132 | 917 | struct elf_m68k_pcrel_relocs_copied *p; |
b6152c34 AS |
918 | struct elf_m68k_pcrel_relocs_copied **head; |
919 | ||
920 | if (h != NULL) | |
921 | { | |
922 | struct elf_m68k_link_hash_entry *eh | |
0cca5f05 | 923 | = elf_m68k_hash_entry (h); |
b6152c34 AS |
924 | head = &eh->pcrel_relocs_copied; |
925 | } | |
926 | else | |
927 | { | |
928 | asection *s; | |
6edfbbad DJ |
929 | void *vpp; |
930 | ||
b6152c34 AS |
931 | s = (bfd_section_from_r_symndx |
932 | (abfd, &elf_m68k_hash_table (info)->sym_sec, | |
933 | sec, r_symndx)); | |
934 | if (s == NULL) | |
935 | return FALSE; | |
252b5132 | 936 | |
6edfbbad DJ |
937 | vpp = &elf_section_data (s)->local_dynrel; |
938 | head = (struct elf_m68k_pcrel_relocs_copied **) vpp; | |
b6152c34 | 939 | } |
252b5132 | 940 | |
b6152c34 | 941 | for (p = *head; p != NULL; p = p->next) |
252b5132 RH |
942 | if (p->section == sreloc) |
943 | break; | |
944 | ||
945 | if (p == NULL) | |
946 | { | |
947 | p = ((struct elf_m68k_pcrel_relocs_copied *) | |
dc810e39 | 948 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
252b5132 | 949 | if (p == NULL) |
b34976b6 | 950 | return FALSE; |
b6152c34 AS |
951 | p->next = *head; |
952 | *head = p; | |
252b5132 RH |
953 | p->section = sreloc; |
954 | p->count = 0; | |
955 | } | |
956 | ||
957 | ++p->count; | |
958 | } | |
959 | } | |
960 | ||
961 | break; | |
962 | ||
963 | /* This relocation describes the C++ object vtable hierarchy. | |
964 | Reconstruct it for later use during GC. */ | |
965 | case R_68K_GNU_VTINHERIT: | |
c152c796 | 966 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 967 | return FALSE; |
252b5132 RH |
968 | break; |
969 | ||
970 | /* This relocation describes which C++ vtable entries are actually | |
971 | used. Record for later use during GC. */ | |
972 | case R_68K_GNU_VTENTRY: | |
c152c796 | 973 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 974 | return FALSE; |
252b5132 RH |
975 | break; |
976 | ||
977 | default: | |
978 | break; | |
979 | } | |
980 | } | |
981 | ||
b34976b6 | 982 | return TRUE; |
252b5132 RH |
983 | } |
984 | ||
985 | /* Return the section that should be marked against GC for a given | |
986 | relocation. */ | |
987 | ||
988 | static asection * | |
1e2f5b6e AM |
989 | elf_m68k_gc_mark_hook (sec, info, rel, h, sym) |
990 | asection *sec; | |
121089cb | 991 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
992 | Elf_Internal_Rela *rel; |
993 | struct elf_link_hash_entry *h; | |
994 | Elf_Internal_Sym *sym; | |
995 | { | |
996 | if (h != NULL) | |
997 | { | |
998 | switch (ELF32_R_TYPE (rel->r_info)) | |
999 | { | |
1000 | case R_68K_GNU_VTINHERIT: | |
1001 | case R_68K_GNU_VTENTRY: | |
1002 | break; | |
1003 | ||
1004 | default: | |
1005 | switch (h->root.type) | |
1006 | { | |
1007 | default: | |
1008 | break; | |
1009 | ||
1010 | case bfd_link_hash_defined: | |
1011 | case bfd_link_hash_defweak: | |
1012 | return h->root.u.def.section; | |
1013 | ||
1014 | case bfd_link_hash_common: | |
1015 | return h->root.u.c.p->section; | |
1016 | } | |
1017 | } | |
1018 | } | |
1019 | else | |
1e2f5b6e | 1020 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
1021 | |
1022 | return NULL; | |
1023 | } | |
1024 | ||
1025 | /* Update the got entry reference counts for the section being removed. */ | |
1026 | ||
b34976b6 | 1027 | static bfd_boolean |
252b5132 RH |
1028 | elf_m68k_gc_sweep_hook (abfd, info, sec, relocs) |
1029 | bfd *abfd; | |
1030 | struct bfd_link_info *info; | |
1031 | asection *sec; | |
1032 | const Elf_Internal_Rela *relocs; | |
1033 | { | |
1034 | Elf_Internal_Shdr *symtab_hdr; | |
1035 | struct elf_link_hash_entry **sym_hashes; | |
1036 | bfd_signed_vma *local_got_refcounts; | |
1037 | const Elf_Internal_Rela *rel, *relend; | |
252b5132 | 1038 | bfd *dynobj; |
dd5724d5 AM |
1039 | asection *sgot; |
1040 | asection *srelgot; | |
252b5132 | 1041 | |
252b5132 | 1042 | dynobj = elf_hash_table (info)->dynobj; |
dd5724d5 | 1043 | if (dynobj == NULL) |
b34976b6 | 1044 | return TRUE; |
dd5724d5 | 1045 | |
4f075348 KH |
1046 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1047 | sym_hashes = elf_sym_hashes (abfd); | |
1048 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1049 | ||
dd5724d5 AM |
1050 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1051 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
252b5132 RH |
1052 | |
1053 | relend = relocs + sec->reloc_count; | |
1054 | for (rel = relocs; rel < relend; rel++) | |
1055 | { | |
4f075348 | 1056 | unsigned long r_symndx; |
3eb128b2 AM |
1057 | struct elf_link_hash_entry *h = NULL; |
1058 | ||
1059 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1060 | if (r_symndx >= symtab_hdr->sh_info) | |
1061 | { | |
1062 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1063 | while (h->root.type == bfd_link_hash_indirect | |
1064 | || h->root.type == bfd_link_hash_warning) | |
1065 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1066 | } | |
4f075348 | 1067 | |
252b5132 RH |
1068 | switch (ELF32_R_TYPE (rel->r_info)) |
1069 | { | |
1070 | case R_68K_GOT8: | |
1071 | case R_68K_GOT16: | |
1072 | case R_68K_GOT32: | |
1073 | case R_68K_GOT8O: | |
1074 | case R_68K_GOT16O: | |
1075 | case R_68K_GOT32O: | |
3eb128b2 | 1076 | if (h != NULL) |
252b5132 | 1077 | { |
252b5132 RH |
1078 | if (h->got.refcount > 0) |
1079 | { | |
1080 | --h->got.refcount; | |
1081 | if (h->got.refcount == 0) | |
1082 | { | |
1083 | /* We don't need the .got entry any more. */ | |
eea6121a AM |
1084 | sgot->size -= 4; |
1085 | srelgot->size -= sizeof (Elf32_External_Rela); | |
252b5132 RH |
1086 | } |
1087 | } | |
1088 | } | |
dd5724d5 | 1089 | else if (local_got_refcounts != NULL) |
252b5132 RH |
1090 | { |
1091 | if (local_got_refcounts[r_symndx] > 0) | |
1092 | { | |
1093 | --local_got_refcounts[r_symndx]; | |
1094 | if (local_got_refcounts[r_symndx] == 0) | |
1095 | { | |
1096 | /* We don't need the .got entry any more. */ | |
eea6121a | 1097 | sgot->size -= 4; |
252b5132 | 1098 | if (info->shared) |
eea6121a | 1099 | srelgot->size -= sizeof (Elf32_External_Rela); |
252b5132 RH |
1100 | } |
1101 | } | |
1102 | } | |
1103 | break; | |
1104 | ||
1105 | case R_68K_PLT8: | |
1106 | case R_68K_PLT16: | |
1107 | case R_68K_PLT32: | |
1108 | case R_68K_PLT8O: | |
1109 | case R_68K_PLT16O: | |
1110 | case R_68K_PLT32O: | |
1111 | case R_68K_PC8: | |
1112 | case R_68K_PC16: | |
1113 | case R_68K_PC32: | |
1114 | case R_68K_8: | |
1115 | case R_68K_16: | |
1116 | case R_68K_32: | |
3eb128b2 | 1117 | if (h != NULL) |
252b5132 | 1118 | { |
252b5132 RH |
1119 | if (h->plt.refcount > 0) |
1120 | --h->plt.refcount; | |
1121 | } | |
1122 | break; | |
1123 | ||
1124 | default: | |
1125 | break; | |
1126 | } | |
1127 | } | |
1128 | ||
b34976b6 | 1129 | return TRUE; |
252b5132 RH |
1130 | } |
1131 | ||
252b5132 RH |
1132 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1133 | regular object. The current definition is in some section of the | |
1134 | dynamic object, but we're not including those sections. We have to | |
1135 | change the definition to something the rest of the link can | |
1136 | understand. */ | |
1137 | ||
b34976b6 | 1138 | static bfd_boolean |
252b5132 RH |
1139 | elf_m68k_adjust_dynamic_symbol (info, h) |
1140 | struct bfd_link_info *info; | |
1141 | struct elf_link_hash_entry *h; | |
1142 | { | |
1143 | bfd *dynobj; | |
1144 | asection *s; | |
1145 | unsigned int power_of_two; | |
1146 | ||
1147 | dynobj = elf_hash_table (info)->dynobj; | |
1148 | ||
1149 | /* Make sure we know what is going on here. */ | |
1150 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 1151 | && (h->needs_plt |
f6e332e6 | 1152 | || h->u.weakdef != NULL |
f5385ebf AM |
1153 | || (h->def_dynamic |
1154 | && h->ref_regular | |
1155 | && !h->def_regular))); | |
252b5132 RH |
1156 | |
1157 | /* If this is a function, put it in the procedure linkage table. We | |
1158 | will fill in the contents of the procedure linkage table later, | |
1159 | when we know the address of the .got section. */ | |
1160 | if (h->type == STT_FUNC | |
f5385ebf | 1161 | || h->needs_plt) |
252b5132 | 1162 | { |
9dfe8738 AS |
1163 | if ((h->plt.refcount <= 0 |
1164 | || SYMBOL_CALLS_LOCAL (info, h) | |
1165 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1166 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
1167 | /* We must always create the plt entry if it was referenced |
1168 | by a PLTxxO relocation. In this case we already recorded | |
1169 | it as a dynamic symbol. */ | |
1170 | && h->dynindx == -1) | |
1171 | { | |
1172 | /* This case can occur if we saw a PLTxx reloc in an input | |
1173 | file, but the symbol was never referred to by a dynamic | |
9dfe8738 AS |
1174 | object, or if all references were garbage collected. In |
1175 | such a case, we don't actually need to build a procedure | |
1176 | linkage table, and we can just do a PCxx reloc instead. */ | |
252b5132 | 1177 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1178 | h->needs_plt = 0; |
b34976b6 | 1179 | return TRUE; |
252b5132 RH |
1180 | } |
1181 | ||
1182 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 1183 | if (h->dynindx == -1 |
f5385ebf | 1184 | && !h->forced_local) |
252b5132 | 1185 | { |
c152c796 | 1186 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1187 | return FALSE; |
252b5132 RH |
1188 | } |
1189 | ||
1190 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
1191 | BFD_ASSERT (s != NULL); | |
1192 | ||
1193 | /* If this is the first .plt entry, make room for the special | |
1194 | first entry. */ | |
eea6121a | 1195 | if (s->size == 0) |
70f06c4a AS |
1196 | { |
1197 | if (CPU32_FLAG (dynobj)) | |
eea6121a | 1198 | s->size += PLT_CPU32_ENTRY_SIZE; |
238d258f NC |
1199 | else if (CFV4E_FLAG (dynobj)) |
1200 | s->size += CFV4E_PLT_ENTRY_SIZE; | |
70f06c4a | 1201 | else |
eea6121a | 1202 | s->size += PLT_ENTRY_SIZE; |
70f06c4a | 1203 | } |
252b5132 RH |
1204 | |
1205 | /* If this symbol is not defined in a regular file, and we are | |
1206 | not generating a shared library, then set the symbol to this | |
1207 | location in the .plt. This is required to make function | |
1208 | pointers compare as equal between the normal executable and | |
1209 | the shared library. */ | |
1210 | if (!info->shared | |
f5385ebf | 1211 | && !h->def_regular) |
252b5132 RH |
1212 | { |
1213 | h->root.u.def.section = s; | |
eea6121a | 1214 | h->root.u.def.value = s->size; |
252b5132 RH |
1215 | } |
1216 | ||
eea6121a | 1217 | h->plt.offset = s->size; |
252b5132 RH |
1218 | |
1219 | /* Make room for this entry. */ | |
9e1281c7 | 1220 | if (CPU32_FLAG (dynobj)) |
eea6121a | 1221 | s->size += PLT_CPU32_ENTRY_SIZE; |
238d258f NC |
1222 | else if (CFV4E_FLAG (dynobj)) |
1223 | s->size += CFV4E_PLT_ENTRY_SIZE; | |
9e1281c7 | 1224 | else |
eea6121a | 1225 | s->size += PLT_ENTRY_SIZE; |
252b5132 RH |
1226 | |
1227 | /* We also need to make an entry in the .got.plt section, which | |
1228 | will be placed in the .got section by the linker script. */ | |
252b5132 RH |
1229 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
1230 | BFD_ASSERT (s != NULL); | |
eea6121a | 1231 | s->size += 4; |
252b5132 RH |
1232 | |
1233 | /* We also need to make an entry in the .rela.plt section. */ | |
252b5132 RH |
1234 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
1235 | BFD_ASSERT (s != NULL); | |
eea6121a | 1236 | s->size += sizeof (Elf32_External_Rela); |
252b5132 | 1237 | |
b34976b6 | 1238 | return TRUE; |
252b5132 RH |
1239 | } |
1240 | ||
1241 | /* Reinitialize the plt offset now that it is not used as a reference | |
1242 | count any more. */ | |
1243 | h->plt.offset = (bfd_vma) -1; | |
1244 | ||
1245 | /* If this is a weak symbol, and there is a real definition, the | |
1246 | processor independent code will have arranged for us to see the | |
1247 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1248 | if (h->u.weakdef != NULL) |
252b5132 | 1249 | { |
f6e332e6 AM |
1250 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1251 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1252 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1253 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1254 | return TRUE; |
252b5132 RH |
1255 | } |
1256 | ||
1257 | /* This is a reference to a symbol defined by a dynamic object which | |
1258 | is not a function. */ | |
1259 | ||
1260 | /* If we are creating a shared library, we must presume that the | |
1261 | only references to the symbol are via the global offset table. | |
1262 | For such cases we need not do anything here; the relocations will | |
1263 | be handled correctly by relocate_section. */ | |
1264 | if (info->shared) | |
b34976b6 | 1265 | return TRUE; |
252b5132 | 1266 | |
909272ee AM |
1267 | if (h->size == 0) |
1268 | { | |
1269 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1270 | h->root.root.string); | |
1271 | return TRUE; | |
1272 | } | |
1273 | ||
252b5132 RH |
1274 | /* We must allocate the symbol in our .dynbss section, which will |
1275 | become part of the .bss section of the executable. There will be | |
1276 | an entry for this symbol in the .dynsym section. The dynamic | |
1277 | object will contain position independent code, so all references | |
1278 | from the dynamic object to this symbol will go through the global | |
1279 | offset table. The dynamic linker will use the .dynsym entry to | |
1280 | determine the address it must put in the global offset table, so | |
1281 | both the dynamic object and the regular object will refer to the | |
1282 | same memory location for the variable. */ | |
1283 | ||
1284 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1285 | BFD_ASSERT (s != NULL); | |
1286 | ||
1287 | /* We must generate a R_68K_COPY reloc to tell the dynamic linker to | |
1288 | copy the initial value out of the dynamic object and into the | |
1289 | runtime process image. We need to remember the offset into the | |
1290 | .rela.bss section we are going to use. */ | |
1291 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1292 | { | |
1293 | asection *srel; | |
1294 | ||
1295 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1296 | BFD_ASSERT (srel != NULL); | |
eea6121a | 1297 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1298 | h->needs_copy = 1; |
252b5132 RH |
1299 | } |
1300 | ||
1301 | /* We need to figure out the alignment required for this symbol. I | |
1302 | have no idea how ELF linkers handle this. */ | |
1303 | power_of_two = bfd_log2 (h->size); | |
1304 | if (power_of_two > 3) | |
1305 | power_of_two = 3; | |
1306 | ||
1307 | /* Apply the required alignment. */ | |
eea6121a | 1308 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
252b5132 RH |
1309 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
1310 | { | |
1311 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 1312 | return FALSE; |
252b5132 RH |
1313 | } |
1314 | ||
1315 | /* Define the symbol as being at this point in the section. */ | |
1316 | h->root.u.def.section = s; | |
eea6121a | 1317 | h->root.u.def.value = s->size; |
252b5132 RH |
1318 | |
1319 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 1320 | s->size += h->size; |
252b5132 | 1321 | |
b34976b6 | 1322 | return TRUE; |
252b5132 RH |
1323 | } |
1324 | ||
1325 | /* Set the sizes of the dynamic sections. */ | |
1326 | ||
b34976b6 | 1327 | static bfd_boolean |
252b5132 | 1328 | elf_m68k_size_dynamic_sections (output_bfd, info) |
aa91b392 | 1329 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1330 | struct bfd_link_info *info; |
1331 | { | |
1332 | bfd *dynobj; | |
1333 | asection *s; | |
b34976b6 AM |
1334 | bfd_boolean plt; |
1335 | bfd_boolean relocs; | |
252b5132 RH |
1336 | |
1337 | dynobj = elf_hash_table (info)->dynobj; | |
1338 | BFD_ASSERT (dynobj != NULL); | |
1339 | ||
1340 | if (elf_hash_table (info)->dynamic_sections_created) | |
1341 | { | |
1342 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1343 | if (info->executable) |
252b5132 RH |
1344 | { |
1345 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1346 | BFD_ASSERT (s != NULL); | |
eea6121a | 1347 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
1348 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1349 | } | |
1350 | } | |
1351 | else | |
1352 | { | |
1353 | /* We may have created entries in the .rela.got section. | |
1354 | However, if we are not creating the dynamic sections, we will | |
1355 | not actually use these entries. Reset the size of .rela.got, | |
1356 | which will cause it to get stripped from the output file | |
1357 | below. */ | |
1358 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1359 | if (s != NULL) | |
eea6121a | 1360 | s->size = 0; |
252b5132 RH |
1361 | } |
1362 | ||
b6152c34 AS |
1363 | /* If this is a -Bsymbolic shared link, then we need to discard all |
1364 | PC relative relocs against symbols defined in a regular object. | |
1365 | For the normal shared case we discard the PC relative relocs | |
1366 | against symbols that have become local due to visibility changes. | |
1367 | We allocated space for them in the check_relocs routine, but we | |
1368 | will not fill them in in the relocate_section routine. */ | |
1369 | if (info->shared) | |
0cca5f05 AS |
1370 | elf_link_hash_traverse (elf_hash_table (info), |
1371 | elf_m68k_discard_copies, | |
1372 | (PTR) info); | |
252b5132 RH |
1373 | |
1374 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1375 | determined the sizes of the various dynamic sections. Allocate | |
1376 | memory for them. */ | |
b34976b6 AM |
1377 | plt = FALSE; |
1378 | relocs = FALSE; | |
252b5132 RH |
1379 | for (s = dynobj->sections; s != NULL; s = s->next) |
1380 | { | |
1381 | const char *name; | |
252b5132 RH |
1382 | |
1383 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1384 | continue; | |
1385 | ||
1386 | /* It's OK to base decisions on the section name, because none | |
1387 | of the dynobj section names depend upon the input files. */ | |
1388 | name = bfd_get_section_name (dynobj, s); | |
1389 | ||
252b5132 RH |
1390 | if (strcmp (name, ".plt") == 0) |
1391 | { | |
c456f082 AM |
1392 | /* Remember whether there is a PLT. */ |
1393 | plt = s->size != 0; | |
252b5132 RH |
1394 | } |
1395 | else if (strncmp (name, ".rela", 5) == 0) | |
1396 | { | |
c456f082 | 1397 | if (s->size != 0) |
252b5132 | 1398 | { |
b34976b6 | 1399 | relocs = TRUE; |
252b5132 RH |
1400 | |
1401 | /* We use the reloc_count field as a counter if we need | |
1402 | to copy relocs into the output file. */ | |
1403 | s->reloc_count = 0; | |
1404 | } | |
1405 | } | |
c456f082 AM |
1406 | else if (strncmp (name, ".got", 4) != 0 |
1407 | && strcmp (name, ".dynbss") != 0) | |
252b5132 RH |
1408 | { |
1409 | /* It's not one of our sections, so don't allocate space. */ | |
1410 | continue; | |
1411 | } | |
1412 | ||
c456f082 | 1413 | if (s->size == 0) |
252b5132 | 1414 | { |
c456f082 AM |
1415 | /* If we don't need this section, strip it from the |
1416 | output file. This is mostly to handle .rela.bss and | |
1417 | .rela.plt. We must create both sections in | |
1418 | create_dynamic_sections, because they must be created | |
1419 | before the linker maps input sections to output | |
1420 | sections. The linker does that before | |
1421 | adjust_dynamic_symbol is called, and it is that | |
1422 | function which decides whether anything needs to go | |
1423 | into these sections. */ | |
8423293d | 1424 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
1425 | continue; |
1426 | } | |
1427 | ||
c456f082 AM |
1428 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1429 | continue; | |
1430 | ||
252b5132 | 1431 | /* Allocate memory for the section contents. */ |
7a9af8c4 NC |
1432 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
1433 | Unused entries should be reclaimed before the section's contents | |
1434 | are written out, but at the moment this does not happen. Thus in | |
1435 | order to prevent writing out garbage, we initialise the section's | |
1436 | contents to zero. */ | |
eea6121a | 1437 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 1438 | if (s->contents == NULL) |
b34976b6 | 1439 | return FALSE; |
252b5132 RH |
1440 | } |
1441 | ||
1442 | if (elf_hash_table (info)->dynamic_sections_created) | |
1443 | { | |
1444 | /* Add some entries to the .dynamic section. We fill in the | |
1445 | values later, in elf_m68k_finish_dynamic_sections, but we | |
1446 | must add the entries now so that we get the correct size for | |
1447 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1448 | dynamic linker and used by the debugger. */ | |
dc810e39 | 1449 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1450 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 1451 | |
252b5132 RH |
1452 | if (!info->shared) |
1453 | { | |
dc810e39 | 1454 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1455 | return FALSE; |
252b5132 RH |
1456 | } |
1457 | ||
1458 | if (plt) | |
1459 | { | |
dc810e39 AM |
1460 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1461 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1462 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1463 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1464 | return FALSE; |
252b5132 RH |
1465 | } |
1466 | ||
1467 | if (relocs) | |
1468 | { | |
dc810e39 AM |
1469 | if (!add_dynamic_entry (DT_RELA, 0) |
1470 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1471 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1472 | return FALSE; |
252b5132 RH |
1473 | } |
1474 | ||
aa91b392 | 1475 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 1476 | { |
dc810e39 | 1477 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1478 | return FALSE; |
252b5132 RH |
1479 | } |
1480 | } | |
dc810e39 | 1481 | #undef add_dynamic_entry |
252b5132 | 1482 | |
b34976b6 | 1483 | return TRUE; |
252b5132 RH |
1484 | } |
1485 | ||
0cca5f05 | 1486 | /* This function is called via elf_link_hash_traverse if we are |
b6152c34 AS |
1487 | creating a shared object. In the -Bsymbolic case it discards the |
1488 | space allocated to copy PC relative relocs against symbols which | |
3e829b4a | 1489 | are defined in regular objects. For the normal shared case, it |
b6152c34 AS |
1490 | discards space for pc-relative relocs that have become local due to |
1491 | symbol visibility changes. We allocated space for them in the | |
1492 | check_relocs routine, but we won't fill them in in the | |
3e829b4a AS |
1493 | relocate_section routine. |
1494 | ||
1495 | We also check whether any of the remaining relocations apply | |
1496 | against a readonly section, and set the DF_TEXTREL flag in this | |
1497 | case. */ | |
252b5132 | 1498 | |
b34976b6 | 1499 | static bfd_boolean |
b6152c34 | 1500 | elf_m68k_discard_copies (h, inf) |
0cca5f05 | 1501 | struct elf_link_hash_entry *h; |
b6152c34 | 1502 | PTR inf; |
252b5132 | 1503 | { |
b6152c34 | 1504 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
252b5132 RH |
1505 | struct elf_m68k_pcrel_relocs_copied *s; |
1506 | ||
0cca5f05 AS |
1507 | if (h->root.type == bfd_link_hash_warning) |
1508 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e92d460e | 1509 | |
f5385ebf | 1510 | if (!h->def_regular |
b6152c34 | 1511 | || (!info->symbolic |
f5385ebf | 1512 | && !h->forced_local)) |
3e829b4a AS |
1513 | { |
1514 | if ((info->flags & DF_TEXTREL) == 0) | |
1515 | { | |
1516 | /* Look for relocations against read-only sections. */ | |
0cca5f05 AS |
1517 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
1518 | s != NULL; | |
1519 | s = s->next) | |
3e829b4a AS |
1520 | if ((s->section->flags & SEC_READONLY) != 0) |
1521 | { | |
1522 | info->flags |= DF_TEXTREL; | |
1523 | break; | |
1524 | } | |
1525 | } | |
0cca5f05 | 1526 | |
3e829b4a AS |
1527 | return TRUE; |
1528 | } | |
252b5132 | 1529 | |
0cca5f05 AS |
1530 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
1531 | s != NULL; | |
1532 | s = s->next) | |
eea6121a | 1533 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
252b5132 | 1534 | |
b34976b6 | 1535 | return TRUE; |
252b5132 RH |
1536 | } |
1537 | ||
1538 | /* Relocate an M68K ELF section. */ | |
1539 | ||
b34976b6 | 1540 | static bfd_boolean |
252b5132 RH |
1541 | elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section, |
1542 | contents, relocs, local_syms, local_sections) | |
1543 | bfd *output_bfd; | |
1544 | struct bfd_link_info *info; | |
1545 | bfd *input_bfd; | |
1546 | asection *input_section; | |
1547 | bfd_byte *contents; | |
1548 | Elf_Internal_Rela *relocs; | |
1549 | Elf_Internal_Sym *local_syms; | |
1550 | asection **local_sections; | |
1551 | { | |
1552 | bfd *dynobj; | |
1553 | Elf_Internal_Shdr *symtab_hdr; | |
1554 | struct elf_link_hash_entry **sym_hashes; | |
1555 | bfd_vma *local_got_offsets; | |
1556 | asection *sgot; | |
1557 | asection *splt; | |
1558 | asection *sreloc; | |
1559 | Elf_Internal_Rela *rel; | |
1560 | Elf_Internal_Rela *relend; | |
1561 | ||
1049f94e | 1562 | if (info->relocatable) |
b34976b6 | 1563 | return TRUE; |
b491616a | 1564 | |
252b5132 RH |
1565 | dynobj = elf_hash_table (info)->dynobj; |
1566 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1567 | sym_hashes = elf_sym_hashes (input_bfd); | |
1568 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1569 | ||
1570 | sgot = NULL; | |
1571 | splt = NULL; | |
1572 | sreloc = NULL; | |
1573 | ||
1574 | rel = relocs; | |
1575 | relend = relocs + input_section->reloc_count; | |
1576 | for (; rel < relend; rel++) | |
1577 | { | |
1578 | int r_type; | |
1579 | reloc_howto_type *howto; | |
1580 | unsigned long r_symndx; | |
1581 | struct elf_link_hash_entry *h; | |
1582 | Elf_Internal_Sym *sym; | |
1583 | asection *sec; | |
1584 | bfd_vma relocation; | |
44f745a6 | 1585 | bfd_boolean unresolved_reloc; |
252b5132 RH |
1586 | bfd_reloc_status_type r; |
1587 | ||
1588 | r_type = ELF32_R_TYPE (rel->r_info); | |
1589 | if (r_type < 0 || r_type >= (int) R_68K_max) | |
1590 | { | |
1591 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1592 | return FALSE; |
252b5132 RH |
1593 | } |
1594 | howto = howto_table + r_type; | |
1595 | ||
1596 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1597 | ||
252b5132 RH |
1598 | h = NULL; |
1599 | sym = NULL; | |
1600 | sec = NULL; | |
44f745a6 | 1601 | unresolved_reloc = FALSE; |
560e09e9 | 1602 | |
252b5132 RH |
1603 | if (r_symndx < symtab_hdr->sh_info) |
1604 | { | |
1605 | sym = local_syms + r_symndx; | |
1606 | sec = local_sections[r_symndx]; | |
8517fae7 | 1607 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
1608 | } |
1609 | else | |
1610 | { | |
560e09e9 NC |
1611 | bfd_boolean warned; |
1612 | ||
b2a8e766 AM |
1613 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1614 | r_symndx, symtab_hdr, sym_hashes, | |
1615 | h, sec, relocation, | |
1616 | unresolved_reloc, warned); | |
252b5132 RH |
1617 | } |
1618 | ||
1619 | switch (r_type) | |
1620 | { | |
1621 | case R_68K_GOT8: | |
1622 | case R_68K_GOT16: | |
1623 | case R_68K_GOT32: | |
1624 | /* Relocation is to the address of the entry for this symbol | |
1625 | in the global offset table. */ | |
1626 | if (h != NULL | |
1627 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1628 | break; | |
1629 | /* Fall through. */ | |
1630 | case R_68K_GOT8O: | |
1631 | case R_68K_GOT16O: | |
1632 | case R_68K_GOT32O: | |
1633 | /* Relocation is the offset of the entry for this symbol in | |
1634 | the global offset table. */ | |
1635 | ||
1636 | { | |
1637 | bfd_vma off; | |
1638 | ||
1639 | if (sgot == NULL) | |
1640 | { | |
1641 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1642 | BFD_ASSERT (sgot != NULL); | |
1643 | } | |
1644 | ||
1645 | if (h != NULL) | |
1646 | { | |
a5ad465a AS |
1647 | bfd_boolean dyn; |
1648 | ||
252b5132 RH |
1649 | off = h->got.offset; |
1650 | BFD_ASSERT (off != (bfd_vma) -1); | |
1651 | ||
a5ad465a AS |
1652 | dyn = elf_hash_table (info)->dynamic_sections_created; |
1653 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
252b5132 | 1654 | || (info->shared |
a5ad465a AS |
1655 | && (info->symbolic |
1656 | || h->dynindx == -1 | |
f5385ebf AM |
1657 | || h->forced_local) |
1658 | && h->def_regular)) | |
252b5132 RH |
1659 | { |
1660 | /* This is actually a static link, or it is a | |
1661 | -Bsymbolic link and the symbol is defined | |
1662 | locally, or the symbol was forced to be local | |
1663 | because of a version file.. We must initialize | |
1664 | this entry in the global offset table. Since | |
1665 | the offset must always be a multiple of 4, we | |
1666 | use the least significant bit to record whether | |
1667 | we have initialized it already. | |
1668 | ||
1669 | When doing a dynamic link, we create a .rela.got | |
1670 | relocation entry to initialize the value. This | |
1671 | is done in the finish_dynamic_symbol routine. */ | |
1672 | if ((off & 1) != 0) | |
1673 | off &= ~1; | |
1674 | else | |
1675 | { | |
1676 | bfd_put_32 (output_bfd, relocation, | |
1677 | sgot->contents + off); | |
1678 | h->got.offset |= 1; | |
1679 | } | |
1680 | } | |
44f745a6 AS |
1681 | else |
1682 | unresolved_reloc = FALSE; | |
252b5132 RH |
1683 | } |
1684 | else | |
1685 | { | |
1686 | BFD_ASSERT (local_got_offsets != NULL | |
1687 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1688 | ||
1689 | off = local_got_offsets[r_symndx]; | |
1690 | ||
1691 | /* The offset must always be a multiple of 4. We use | |
1692 | the least significant bit to record whether we have | |
1693 | already generated the necessary reloc. */ | |
1694 | if ((off & 1) != 0) | |
1695 | off &= ~1; | |
1696 | else | |
1697 | { | |
1698 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1699 | ||
1700 | if (info->shared) | |
1701 | { | |
947216bf | 1702 | asection *s; |
252b5132 | 1703 | Elf_Internal_Rela outrel; |
947216bf | 1704 | bfd_byte *loc; |
252b5132 | 1705 | |
947216bf AM |
1706 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
1707 | BFD_ASSERT (s != NULL); | |
252b5132 RH |
1708 | |
1709 | outrel.r_offset = (sgot->output_section->vma | |
1710 | + sgot->output_offset | |
1711 | + off); | |
1712 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
1713 | outrel.r_addend = relocation; | |
947216bf AM |
1714 | loc = s->contents; |
1715 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1716 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1717 | } |
1718 | ||
1719 | local_got_offsets[r_symndx] |= 1; | |
1720 | } | |
1721 | } | |
1722 | ||
1723 | relocation = sgot->output_offset + off; | |
1724 | if (r_type == R_68K_GOT8O | |
1725 | || r_type == R_68K_GOT16O | |
1726 | || r_type == R_68K_GOT32O) | |
1727 | { | |
1728 | /* This relocation does not use the addend. */ | |
1729 | rel->r_addend = 0; | |
1730 | } | |
1731 | else | |
1732 | relocation += sgot->output_section->vma; | |
1733 | } | |
1734 | break; | |
1735 | ||
1736 | case R_68K_PLT8: | |
1737 | case R_68K_PLT16: | |
1738 | case R_68K_PLT32: | |
1739 | /* Relocation is to the entry for this symbol in the | |
1740 | procedure linkage table. */ | |
1741 | ||
1742 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1743 | without using the procedure linkage table. */ | |
1744 | if (h == NULL) | |
1745 | break; | |
1746 | ||
1747 | if (h->plt.offset == (bfd_vma) -1 | |
1748 | || !elf_hash_table (info)->dynamic_sections_created) | |
1749 | { | |
1750 | /* We didn't make a PLT entry for this symbol. This | |
1751 | happens when statically linking PIC code, or when | |
1752 | using -Bsymbolic. */ | |
1753 | break; | |
1754 | } | |
1755 | ||
1756 | if (splt == NULL) | |
1757 | { | |
1758 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1759 | BFD_ASSERT (splt != NULL); | |
1760 | } | |
1761 | ||
1762 | relocation = (splt->output_section->vma | |
1763 | + splt->output_offset | |
1764 | + h->plt.offset); | |
44f745a6 | 1765 | unresolved_reloc = FALSE; |
252b5132 RH |
1766 | break; |
1767 | ||
1768 | case R_68K_PLT8O: | |
1769 | case R_68K_PLT16O: | |
1770 | case R_68K_PLT32O: | |
1771 | /* Relocation is the offset of the entry for this symbol in | |
1772 | the procedure linkage table. */ | |
1773 | BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1); | |
1774 | ||
1775 | if (splt == NULL) | |
1776 | { | |
1777 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1778 | BFD_ASSERT (splt != NULL); | |
1779 | } | |
1780 | ||
1781 | relocation = h->plt.offset; | |
44f745a6 | 1782 | unresolved_reloc = FALSE; |
252b5132 RH |
1783 | |
1784 | /* This relocation does not use the addend. */ | |
1785 | rel->r_addend = 0; | |
1786 | ||
1787 | break; | |
1788 | ||
1789 | case R_68K_PC8: | |
1790 | case R_68K_PC16: | |
1791 | case R_68K_PC32: | |
b6152c34 AS |
1792 | if (h == NULL |
1793 | || (info->shared | |
f5385ebf | 1794 | && h->forced_local)) |
252b5132 RH |
1795 | break; |
1796 | /* Fall through. */ | |
1797 | case R_68K_8: | |
1798 | case R_68K_16: | |
1799 | case R_68K_32: | |
1800 | if (info->shared | |
ec338859 | 1801 | && r_symndx != 0 |
252b5132 | 1802 | && (input_section->flags & SEC_ALLOC) != 0 |
d2ff124f AS |
1803 | && (h == NULL |
1804 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1805 | || h->root.type != bfd_link_hash_undefweak) | |
252b5132 RH |
1806 | && ((r_type != R_68K_PC8 |
1807 | && r_type != R_68K_PC16 | |
1808 | && r_type != R_68K_PC32) | |
d2ff124f AS |
1809 | || (h != NULL |
1810 | && h->dynindx != -1 | |
1811 | && (!info->symbolic | |
f5385ebf | 1812 | || !h->def_regular)))) |
252b5132 RH |
1813 | { |
1814 | Elf_Internal_Rela outrel; | |
947216bf | 1815 | bfd_byte *loc; |
b34976b6 | 1816 | bfd_boolean skip, relocate; |
252b5132 RH |
1817 | |
1818 | /* When generating a shared object, these relocations | |
1819 | are copied into the output file to be resolved at run | |
1820 | time. */ | |
1821 | ||
b34976b6 AM |
1822 | skip = FALSE; |
1823 | relocate = FALSE; | |
252b5132 | 1824 | |
c629eae0 JJ |
1825 | outrel.r_offset = |
1826 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1827 | rel->r_offset); | |
1828 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1829 | skip = TRUE; |
0bb2d96a | 1830 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1831 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
1832 | outrel.r_offset += (input_section->output_section->vma |
1833 | + input_section->output_offset); | |
1834 | ||
1835 | if (skip) | |
0bb2d96a | 1836 | memset (&outrel, 0, sizeof outrel); |
252b5132 | 1837 | else if (h != NULL |
d2ff124f AS |
1838 | && h->dynindx != -1 |
1839 | && (r_type == R_68K_PC8 | |
1840 | || r_type == R_68K_PC16 | |
1841 | || r_type == R_68K_PC32 | |
1842 | || !info->shared | |
1843 | || !info->symbolic | |
f5385ebf | 1844 | || !h->def_regular)) |
252b5132 | 1845 | { |
252b5132 | 1846 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
d2ff124f | 1847 | outrel.r_addend = rel->r_addend; |
252b5132 RH |
1848 | } |
1849 | else | |
1850 | { | |
d2ff124f | 1851 | /* This symbol is local, or marked to become local. */ |
252b5132 RH |
1852 | if (r_type == R_68K_32) |
1853 | { | |
b34976b6 | 1854 | relocate = TRUE; |
252b5132 RH |
1855 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); |
1856 | outrel.r_addend = relocation + rel->r_addend; | |
1857 | } | |
1858 | else | |
1859 | { | |
1860 | long indx; | |
1861 | ||
8517fae7 | 1862 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
1863 | indx = 0; |
1864 | else if (sec == NULL || sec->owner == NULL) | |
1865 | { | |
1866 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1867 | return FALSE; |
252b5132 RH |
1868 | } |
1869 | else | |
1870 | { | |
1871 | asection *osec; | |
1872 | ||
1873 | osec = sec->output_section; | |
1874 | indx = elf_section_data (osec)->dynindx; | |
1875 | BFD_ASSERT (indx > 0); | |
1876 | } | |
1877 | ||
252b5132 RH |
1878 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
1879 | outrel.r_addend = relocation + rel->r_addend; | |
1880 | } | |
1881 | } | |
1882 | ||
d2ff124f AS |
1883 | sreloc = elf_section_data (input_section)->sreloc; |
1884 | if (sreloc == NULL) | |
1885 | abort (); | |
1886 | ||
947216bf AM |
1887 | loc = sreloc->contents; |
1888 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1889 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1890 | |
1891 | /* This reloc will be computed at runtime, so there's no | |
1892 | need to do anything now, except for R_68K_32 | |
1893 | relocations that have been turned into | |
1894 | R_68K_RELATIVE. */ | |
1895 | if (!relocate) | |
1896 | continue; | |
1897 | } | |
1898 | ||
1899 | break; | |
1900 | ||
1901 | case R_68K_GNU_VTINHERIT: | |
1902 | case R_68K_GNU_VTENTRY: | |
1903 | /* These are no-ops in the end. */ | |
1904 | continue; | |
1905 | ||
1906 | default: | |
1907 | break; | |
1908 | } | |
1909 | ||
44f745a6 AS |
1910 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
1911 | because such sections are not SEC_ALLOC and thus ld.so will | |
1912 | not process them. */ | |
1913 | if (unresolved_reloc | |
1914 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1915 | && h->def_dynamic)) |
44f745a6 AS |
1916 | { |
1917 | (*_bfd_error_handler) | |
843fe662 | 1918 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
1919 | input_bfd, |
1920 | input_section, | |
44f745a6 | 1921 | (long) rel->r_offset, |
843fe662 | 1922 | howto->name, |
44f745a6 AS |
1923 | h->root.root.string); |
1924 | return FALSE; | |
1925 | } | |
1926 | ||
252b5132 RH |
1927 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
1928 | contents, rel->r_offset, | |
1929 | relocation, rel->r_addend); | |
1930 | ||
1931 | if (r != bfd_reloc_ok) | |
1932 | { | |
44f745a6 AS |
1933 | const char *name; |
1934 | ||
1935 | if (h != NULL) | |
1936 | name = h->root.root.string; | |
1937 | else | |
252b5132 | 1938 | { |
44f745a6 AS |
1939 | name = bfd_elf_string_from_elf_section (input_bfd, |
1940 | symtab_hdr->sh_link, | |
1941 | sym->st_name); | |
1942 | if (name == NULL) | |
1943 | return FALSE; | |
1944 | if (*name == '\0') | |
1945 | name = bfd_section_name (input_bfd, sec); | |
1946 | } | |
252b5132 | 1947 | |
44f745a6 AS |
1948 | if (r == bfd_reloc_overflow) |
1949 | { | |
1950 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
1951 | (info, (h ? &h->root : NULL), name, howto->name, |
1952 | (bfd_vma) 0, input_bfd, input_section, | |
1953 | rel->r_offset))) | |
44f745a6 AS |
1954 | return FALSE; |
1955 | } | |
1956 | else | |
1957 | { | |
1958 | (*_bfd_error_handler) | |
d003868e AM |
1959 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
1960 | input_bfd, input_section, | |
44f745a6 AS |
1961 | (long) rel->r_offset, name, (int) r); |
1962 | return FALSE; | |
252b5132 RH |
1963 | } |
1964 | } | |
1965 | } | |
1966 | ||
b34976b6 | 1967 | return TRUE; |
252b5132 RH |
1968 | } |
1969 | ||
1970 | /* Finish up dynamic symbol handling. We set the contents of various | |
1971 | dynamic sections here. */ | |
1972 | ||
b34976b6 | 1973 | static bfd_boolean |
252b5132 RH |
1974 | elf_m68k_finish_dynamic_symbol (output_bfd, info, h, sym) |
1975 | bfd *output_bfd; | |
1976 | struct bfd_link_info *info; | |
1977 | struct elf_link_hash_entry *h; | |
1978 | Elf_Internal_Sym *sym; | |
1979 | { | |
1980 | bfd *dynobj; | |
9e1281c7 | 1981 | int plt_off1, plt_off2, plt_off3; |
252b5132 RH |
1982 | |
1983 | dynobj = elf_hash_table (info)->dynobj; | |
1984 | ||
1985 | if (h->plt.offset != (bfd_vma) -1) | |
1986 | { | |
1987 | asection *splt; | |
1988 | asection *sgot; | |
1989 | asection *srela; | |
1990 | bfd_vma plt_index; | |
1991 | bfd_vma got_offset; | |
1992 | Elf_Internal_Rela rela; | |
947216bf | 1993 | bfd_byte *loc; |
252b5132 RH |
1994 | |
1995 | /* This symbol has an entry in the procedure linkage table. Set | |
1996 | it up. */ | |
1997 | ||
1998 | BFD_ASSERT (h->dynindx != -1); | |
1999 | ||
2000 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2001 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2002 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2003 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
2004 | ||
2005 | /* Get the index in the procedure linkage table which | |
2006 | corresponds to this symbol. This is the index of this symbol | |
2007 | in all the symbols for which we are making plt entries. The | |
2008 | first entry in the procedure linkage table is reserved. */ | |
238d258f NC |
2009 | if (CPU32_FLAG (output_bfd)) |
2010 | plt_index = (h->plt.offset / PLT_CPU32_ENTRY_SIZE) - 1; | |
2011 | else if (CFV4E_FLAG (output_bfd)) | |
2012 | plt_index = (h->plt.offset / CFV4E_PLT_ENTRY_SIZE) - 1; | |
9e1281c7 | 2013 | else |
238d258f | 2014 | plt_index = (h->plt.offset / PLT_ENTRY_SIZE) - 1; |
252b5132 RH |
2015 | |
2016 | /* Get the offset into the .got table of the entry that | |
2017 | corresponds to this function. Each .got entry is 4 bytes. | |
2018 | The first three are reserved. */ | |
2019 | got_offset = (plt_index + 3) * 4; | |
2020 | ||
238d258f | 2021 | if (CPU32_FLAG (output_bfd)) |
9e1281c7 CM |
2022 | { |
2023 | /* Fill in the entry in the procedure linkage table. */ | |
2024 | memcpy (splt->contents + h->plt.offset, elf_cpu32_plt_entry, | |
2025 | PLT_CPU32_ENTRY_SIZE); | |
2026 | plt_off1 = 4; | |
2027 | plt_off2 = 12; | |
2028 | plt_off3 = 18; | |
2029 | } | |
238d258f NC |
2030 | else if (CFV4E_FLAG (output_bfd)) |
2031 | { | |
2032 | memcpy (splt->contents + h->plt.offset, elf_cfv4e_plt_entry, | |
2033 | CFV4E_PLT_ENTRY_SIZE); | |
2034 | plt_off1 = 2; | |
2035 | plt_off2 = 14; | |
2036 | plt_off3 = 20; | |
2037 | } | |
9e1281c7 CM |
2038 | else |
2039 | { | |
2040 | /* Fill in the entry in the procedure linkage table. */ | |
2041 | memcpy (splt->contents + h->plt.offset, elf_m68k_plt_entry, | |
2042 | PLT_ENTRY_SIZE); | |
2043 | plt_off1 = 4; | |
2044 | plt_off2 = 10; | |
2045 | plt_off3 = 16; | |
2046 | } | |
2047 | ||
252b5132 RH |
2048 | /* The offset is relative to the first extension word. */ |
2049 | bfd_put_32 (output_bfd, | |
238d258f NC |
2050 | sgot->output_section->vma |
2051 | + sgot->output_offset | |
2052 | + got_offset | |
2053 | - (splt->output_section->vma | |
2054 | + h->plt.offset | |
966972ec | 2055 | + (CFV4E_FLAG (output_bfd) ? 8 : 2)), |
9e1281c7 | 2056 | splt->contents + h->plt.offset + plt_off1); |
252b5132 RH |
2057 | |
2058 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
9e1281c7 CM |
2059 | splt->contents + h->plt.offset + plt_off2); |
2060 | bfd_put_32 (output_bfd, - (h->plt.offset + plt_off3), | |
2061 | splt->contents + h->plt.offset + plt_off3); | |
252b5132 RH |
2062 | |
2063 | /* Fill in the entry in the global offset table. */ | |
2064 | bfd_put_32 (output_bfd, | |
2065 | (splt->output_section->vma | |
2066 | + splt->output_offset | |
2067 | + h->plt.offset | |
966972ec | 2068 | + (CFV4E_FLAG (output_bfd) ? 12 : 8)), |
252b5132 RH |
2069 | sgot->contents + got_offset); |
2070 | ||
2071 | /* Fill in the entry in the .rela.plt section. */ | |
2072 | rela.r_offset = (sgot->output_section->vma | |
2073 | + sgot->output_offset | |
2074 | + got_offset); | |
2075 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT); | |
2076 | rela.r_addend = 0; | |
947216bf AM |
2077 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
2078 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 | 2079 | |
f5385ebf | 2080 | if (!h->def_regular) |
252b5132 RH |
2081 | { |
2082 | /* Mark the symbol as undefined, rather than as defined in | |
2083 | the .plt section. Leave the value alone. */ | |
2084 | sym->st_shndx = SHN_UNDEF; | |
2085 | } | |
2086 | } | |
2087 | ||
2088 | if (h->got.offset != (bfd_vma) -1) | |
2089 | { | |
2090 | asection *sgot; | |
2091 | asection *srela; | |
2092 | Elf_Internal_Rela rela; | |
947216bf | 2093 | bfd_byte *loc; |
252b5132 RH |
2094 | |
2095 | /* This symbol has an entry in the global offset table. Set it | |
2096 | up. */ | |
2097 | ||
2098 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2099 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2100 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
2101 | ||
2102 | rela.r_offset = (sgot->output_section->vma | |
2103 | + sgot->output_offset | |
dc810e39 | 2104 | + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
2105 | |
2106 | /* If this is a -Bsymbolic link, and the symbol is defined | |
2107 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
2108 | the symbol was forced to be local because of a version file. | |
2109 | The entry in the global offset table will already have been | |
2110 | initialized in the relocate_section function. */ | |
2111 | if (info->shared | |
a5ad465a AS |
2112 | && (info->symbolic |
2113 | || h->dynindx == -1 | |
f5385ebf AM |
2114 | || h->forced_local) |
2115 | && h->def_regular) | |
252b5132 RH |
2116 | { |
2117 | rela.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
2118 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
2119 | (sgot->contents | |
dc810e39 | 2120 | + (h->got.offset &~ (bfd_vma) 1))); |
252b5132 RH |
2121 | } |
2122 | else | |
2123 | { | |
2124 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
dc810e39 | 2125 | sgot->contents + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
2126 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT); |
2127 | rela.r_addend = 0; | |
2128 | } | |
2129 | ||
947216bf AM |
2130 | loc = srela->contents; |
2131 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
2132 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
2133 | } |
2134 | ||
f5385ebf | 2135 | if (h->needs_copy) |
252b5132 RH |
2136 | { |
2137 | asection *s; | |
2138 | Elf_Internal_Rela rela; | |
947216bf | 2139 | bfd_byte *loc; |
252b5132 RH |
2140 | |
2141 | /* This symbol needs a copy reloc. Set it up. */ | |
2142 | ||
2143 | BFD_ASSERT (h->dynindx != -1 | |
2144 | && (h->root.type == bfd_link_hash_defined | |
2145 | || h->root.type == bfd_link_hash_defweak)); | |
2146 | ||
2147 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
2148 | ".rela.bss"); | |
2149 | BFD_ASSERT (s != NULL); | |
2150 | ||
2151 | rela.r_offset = (h->root.u.def.value | |
2152 | + h->root.u.def.section->output_section->vma | |
2153 | + h->root.u.def.section->output_offset); | |
2154 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY); | |
2155 | rela.r_addend = 0; | |
947216bf AM |
2156 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
2157 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
2158 | } |
2159 | ||
2160 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
2161 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 | 2162 | || h == elf_hash_table (info)->hgot) |
252b5132 RH |
2163 | sym->st_shndx = SHN_ABS; |
2164 | ||
b34976b6 | 2165 | return TRUE; |
252b5132 RH |
2166 | } |
2167 | ||
2168 | /* Finish up the dynamic sections. */ | |
2169 | ||
b34976b6 | 2170 | static bfd_boolean |
252b5132 RH |
2171 | elf_m68k_finish_dynamic_sections (output_bfd, info) |
2172 | bfd *output_bfd; | |
2173 | struct bfd_link_info *info; | |
2174 | { | |
2175 | bfd *dynobj; | |
2176 | asection *sgot; | |
2177 | asection *sdyn; | |
2178 | ||
2179 | dynobj = elf_hash_table (info)->dynobj; | |
2180 | ||
2181 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2182 | BFD_ASSERT (sgot != NULL); | |
2183 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2184 | ||
2185 | if (elf_hash_table (info)->dynamic_sections_created) | |
2186 | { | |
2187 | asection *splt; | |
2188 | Elf32_External_Dyn *dyncon, *dynconend; | |
2189 | ||
2190 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2191 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2192 | ||
2193 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 2194 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
2195 | for (; dyncon < dynconend; dyncon++) |
2196 | { | |
2197 | Elf_Internal_Dyn dyn; | |
2198 | const char *name; | |
2199 | asection *s; | |
2200 | ||
2201 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2202 | ||
2203 | switch (dyn.d_tag) | |
2204 | { | |
2205 | default: | |
2206 | break; | |
2207 | ||
2208 | case DT_PLTGOT: | |
2209 | name = ".got"; | |
2210 | goto get_vma; | |
2211 | case DT_JMPREL: | |
2212 | name = ".rela.plt"; | |
2213 | get_vma: | |
2214 | s = bfd_get_section_by_name (output_bfd, name); | |
2215 | BFD_ASSERT (s != NULL); | |
2216 | dyn.d_un.d_ptr = s->vma; | |
2217 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2218 | break; | |
2219 | ||
2220 | case DT_PLTRELSZ: | |
2221 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2222 | BFD_ASSERT (s != NULL); | |
eea6121a | 2223 | dyn.d_un.d_val = s->size; |
252b5132 RH |
2224 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2225 | break; | |
2226 | ||
2227 | case DT_RELASZ: | |
2228 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2229 | not be included in the overall relocs (DT_RELA). | |
2230 | Therefore, we override the DT_RELASZ entry here to | |
2231 | make it not include the JMPREL relocs. Since the | |
2232 | linker script arranges for .rela.plt to follow all | |
2233 | other relocation sections, we don't have to worry | |
2234 | about changing the DT_RELA entry. */ | |
2235 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2236 | if (s != NULL) | |
eea6121a | 2237 | dyn.d_un.d_val -= s->size; |
252b5132 RH |
2238 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2239 | break; | |
2240 | } | |
2241 | } | |
2242 | ||
2243 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2244 | if (splt->size > 0) |
252b5132 | 2245 | { |
238d258f NC |
2246 | if (CFV4E_FLAG (output_bfd)) |
2247 | { | |
2248 | memcpy (splt->contents, elf_cfv4e_plt0_entry, CFV4E_PLT_ENTRY_SIZE); | |
2249 | bfd_put_32 (output_bfd, | |
2250 | (sgot->output_section->vma | |
2251 | + sgot->output_offset + 4 | |
2252 | - (splt->output_section->vma + 2)), | |
2253 | splt->contents + 2); | |
2254 | bfd_put_32 (output_bfd, | |
2255 | (sgot->output_section->vma | |
2256 | + sgot->output_offset + 8 | |
2257 | - (splt->output_section->vma + 10) - 8), | |
2258 | splt->contents + 12); | |
2259 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
2260 | = CFV4E_PLT_ENTRY_SIZE; | |
2261 | } | |
2262 | else if (CPU32_FLAG (output_bfd)) | |
9e1281c7 | 2263 | { |
238d258f | 2264 | memcpy (splt->contents, elf_cpu32_plt0_entry, PLT_CPU32_ENTRY_SIZE); |
9e1281c7 CM |
2265 | bfd_put_32 (output_bfd, |
2266 | (sgot->output_section->vma | |
2267 | + sgot->output_offset + 4 | |
2268 | - (splt->output_section->vma + 2)), | |
2269 | splt->contents + 4); | |
2270 | bfd_put_32 (output_bfd, | |
2271 | (sgot->output_section->vma | |
2272 | + sgot->output_offset + 8 | |
2273 | - (splt->output_section->vma + 10)), | |
2274 | splt->contents + 12); | |
c3668558 | 2275 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
238d258f | 2276 | = PLT_CPU32_ENTRY_SIZE; |
9e1281c7 | 2277 | } |
238d258f | 2278 | else |
9e1281c7 | 2279 | { |
238d258f | 2280 | memcpy (splt->contents, elf_m68k_plt0_entry, PLT_ENTRY_SIZE); |
9e1281c7 CM |
2281 | bfd_put_32 (output_bfd, |
2282 | (sgot->output_section->vma | |
2283 | + sgot->output_offset + 4 | |
2284 | - (splt->output_section->vma + 2)), | |
2285 | splt->contents + 4); | |
2286 | bfd_put_32 (output_bfd, | |
2287 | (sgot->output_section->vma | |
2288 | + sgot->output_offset + 8 | |
2289 | - (splt->output_section->vma + 10)), | |
6091b433 | 2290 | splt->contents + 12); |
c3668558 | 2291 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
238d258f | 2292 | = PLT_ENTRY_SIZE; |
9e1281c7 | 2293 | } |
252b5132 | 2294 | } |
252b5132 RH |
2295 | } |
2296 | ||
2297 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2298 | if (sgot->size > 0) |
252b5132 RH |
2299 | { |
2300 | if (sdyn == NULL) | |
2301 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2302 | else | |
2303 | bfd_put_32 (output_bfd, | |
2304 | sdyn->output_section->vma + sdyn->output_offset, | |
2305 | sgot->contents); | |
2306 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2307 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2308 | } | |
2309 | ||
2310 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2311 | ||
b34976b6 | 2312 | return TRUE; |
252b5132 RH |
2313 | } |
2314 | ||
0752970e NC |
2315 | /* Given a .data section and a .emreloc in-memory section, store |
2316 | relocation information into the .emreloc section which can be | |
2317 | used at runtime to relocate the section. This is called by the | |
2318 | linker when the --embedded-relocs switch is used. This is called | |
2319 | after the add_symbols entry point has been called for all the | |
2320 | objects, and before the final_link entry point is called. */ | |
2321 | ||
b34976b6 | 2322 | bfd_boolean |
0752970e NC |
2323 | bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) |
2324 | bfd *abfd; | |
2325 | struct bfd_link_info *info; | |
2326 | asection *datasec; | |
2327 | asection *relsec; | |
2328 | char **errmsg; | |
2329 | { | |
2330 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc AM |
2331 | Elf_Internal_Sym *isymbuf = NULL; |
2332 | Elf_Internal_Rela *internal_relocs = NULL; | |
0752970e NC |
2333 | Elf_Internal_Rela *irel, *irelend; |
2334 | bfd_byte *p; | |
dc810e39 | 2335 | bfd_size_type amt; |
0752970e | 2336 | |
1049f94e | 2337 | BFD_ASSERT (! info->relocatable); |
0752970e NC |
2338 | |
2339 | *errmsg = NULL; | |
2340 | ||
2341 | if (datasec->reloc_count == 0) | |
b34976b6 | 2342 | return TRUE; |
0752970e NC |
2343 | |
2344 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
9ad5cbcf | 2345 | |
0752970e | 2346 | /* Get a copy of the native relocations. */ |
45d6a902 | 2347 | internal_relocs = (_bfd_elf_link_read_relocs |
0752970e NC |
2348 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
2349 | info->keep_memory)); | |
2350 | if (internal_relocs == NULL) | |
2351 | goto error_return; | |
0752970e | 2352 | |
dc810e39 AM |
2353 | amt = (bfd_size_type) datasec->reloc_count * 12; |
2354 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
0752970e NC |
2355 | if (relsec->contents == NULL) |
2356 | goto error_return; | |
2357 | ||
2358 | p = relsec->contents; | |
2359 | ||
2360 | irelend = internal_relocs + datasec->reloc_count; | |
2361 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
2362 | { | |
2363 | asection *targetsec; | |
2364 | ||
2365 | /* We are going to write a four byte longword into the runtime | |
2366 | reloc section. The longword will be the address in the data | |
2367 | section which must be relocated. It is followed by the name | |
2368 | of the target section NUL-padded or truncated to 8 | |
2369 | characters. */ | |
2370 | ||
2371 | /* We can only relocate absolute longword relocs at run time. */ | |
2372 | if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32) | |
2373 | { | |
2374 | *errmsg = _("unsupported reloc type"); | |
2375 | bfd_set_error (bfd_error_bad_value); | |
2376 | goto error_return; | |
2377 | } | |
2378 | ||
2379 | /* Get the target section referred to by the reloc. */ | |
2380 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2381 | { | |
0752970e | 2382 | /* A local symbol. */ |
6cdc0ccc AM |
2383 | Elf_Internal_Sym *isym; |
2384 | ||
2385 | /* Read this BFD's local symbols if we haven't done so already. */ | |
2386 | if (isymbuf == NULL) | |
2387 | { | |
2388 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2389 | if (isymbuf == NULL) | |
2390 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2391 | symtab_hdr->sh_info, 0, | |
2392 | NULL, NULL, NULL); | |
2393 | if (isymbuf == NULL) | |
2394 | goto error_return; | |
2395 | } | |
0752970e | 2396 | |
6cdc0ccc AM |
2397 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
2398 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
0752970e NC |
2399 | } |
2400 | else | |
2401 | { | |
2402 | unsigned long indx; | |
2403 | struct elf_link_hash_entry *h; | |
2404 | ||
2405 | /* An external symbol. */ | |
2406 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2407 | h = elf_sym_hashes (abfd)[indx]; | |
2408 | BFD_ASSERT (h != NULL); | |
2409 | if (h->root.type == bfd_link_hash_defined | |
2410 | || h->root.type == bfd_link_hash_defweak) | |
2411 | targetsec = h->root.u.def.section; | |
2412 | else | |
2413 | targetsec = NULL; | |
2414 | } | |
2415 | ||
2416 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
2417 | memset (p + 4, 0, 8); | |
2418 | if (targetsec != NULL) | |
f075ee0c | 2419 | strncpy ((char *) p + 4, targetsec->output_section->name, 8); |
0752970e | 2420 | } |
c3668558 | 2421 | |
6cdc0ccc AM |
2422 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
2423 | free (isymbuf); | |
2424 | if (internal_relocs != NULL | |
2425 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2426 | free (internal_relocs); | |
b34976b6 | 2427 | return TRUE; |
0752970e NC |
2428 | |
2429 | error_return: | |
6cdc0ccc AM |
2430 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
2431 | free (isymbuf); | |
2432 | if (internal_relocs != NULL | |
2433 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2434 | free (internal_relocs); | |
b34976b6 | 2435 | return FALSE; |
0752970e NC |
2436 | } |
2437 | ||
aa91b392 | 2438 | static enum elf_reloc_type_class |
f51e552e AM |
2439 | elf32_m68k_reloc_type_class (rela) |
2440 | const Elf_Internal_Rela *rela; | |
aa91b392 | 2441 | { |
f51e552e | 2442 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
aa91b392 AS |
2443 | { |
2444 | case R_68K_RELATIVE: | |
2445 | return reloc_class_relative; | |
2446 | case R_68K_JMP_SLOT: | |
2447 | return reloc_class_plt; | |
2448 | case R_68K_COPY: | |
2449 | return reloc_class_copy; | |
2450 | default: | |
2451 | return reloc_class_normal; | |
2452 | } | |
2453 | } | |
2454 | ||
1715e0e3 AS |
2455 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
2456 | or (bfd_vma) -1 if it should not be included. */ | |
2457 | ||
2458 | static bfd_vma | |
2459 | elf_m68k_plt_sym_val (bfd_vma i, const asection *plt, | |
2460 | const arelent *rel ATTRIBUTE_UNUSED) | |
2461 | { | |
2462 | if (CPU32_FLAG (plt->owner)) | |
2463 | return plt->vma + (i + 1) * PLT_CPU32_ENTRY_SIZE; | |
2464 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
2465 | } | |
2466 | ||
252b5132 RH |
2467 | #define TARGET_BIG_SYM bfd_elf32_m68k_vec |
2468 | #define TARGET_BIG_NAME "elf32-m68k" | |
2469 | #define ELF_MACHINE_CODE EM_68K | |
2470 | #define ELF_MAXPAGESIZE 0x2000 | |
2471 | #define elf_backend_create_dynamic_sections \ | |
2472 | _bfd_elf_create_dynamic_sections | |
2473 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2474 | elf_m68k_link_hash_table_create | |
c152c796 | 2475 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
252b5132 RH |
2476 | |
2477 | #define elf_backend_check_relocs elf_m68k_check_relocs | |
2478 | #define elf_backend_adjust_dynamic_symbol \ | |
2479 | elf_m68k_adjust_dynamic_symbol | |
2480 | #define elf_backend_size_dynamic_sections \ | |
2481 | elf_m68k_size_dynamic_sections | |
2482 | #define elf_backend_relocate_section elf_m68k_relocate_section | |
2483 | #define elf_backend_finish_dynamic_symbol \ | |
2484 | elf_m68k_finish_dynamic_symbol | |
2485 | #define elf_backend_finish_dynamic_sections \ | |
2486 | elf_m68k_finish_dynamic_sections | |
2487 | #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook | |
2488 | #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook | |
9e1281c7 CM |
2489 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
2490 | elf32_m68k_merge_private_bfd_data | |
2491 | #define bfd_elf32_bfd_set_private_flags \ | |
2492 | elf32_m68k_set_private_flags | |
2493 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2494 | elf32_m68k_print_private_bfd_data | |
aa91b392 | 2495 | #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class |
1715e0e3 | 2496 | #define elf_backend_plt_sym_val elf_m68k_plt_sym_val |
266abb8f | 2497 | #define elf_backend_object_p elf32_m68k_object_p |
9e1281c7 | 2498 | |
252b5132 | 2499 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 2500 | #define elf_backend_can_refcount 1 |
252b5132 RH |
2501 | #define elf_backend_want_got_plt 1 |
2502 | #define elf_backend_plt_readonly 1 | |
2503 | #define elf_backend_want_plt_sym 0 | |
2504 | #define elf_backend_got_header_size 12 | |
b491616a | 2505 | #define elf_backend_rela_normal 1 |
252b5132 RH |
2506 | |
2507 | #include "elf32-target.h" |