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