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 | ||
cc3e26be RS |
193 | /* Describes one of the various PLT styles. */ |
194 | ||
195 | struct elf_m68k_plt_info | |
196 | { | |
197 | /* The size of each PLT entry. */ | |
198 | bfd_vma size; | |
199 | ||
200 | /* The template for the first PLT entry. */ | |
201 | const bfd_byte *plt0_entry; | |
202 | ||
203 | /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations. | |
204 | The comments by each member indicate the value that the relocation | |
205 | is against. */ | |
206 | struct { | |
207 | unsigned int got4; /* .got + 4 */ | |
208 | unsigned int got8; /* .got + 8 */ | |
209 | } plt0_relocs; | |
210 | ||
211 | /* The template for a symbol's PLT entry. */ | |
212 | const bfd_byte *symbol_entry; | |
213 | ||
214 | /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations. | |
215 | The comments by each member indicate the value that the relocation | |
216 | is against. */ | |
217 | struct { | |
218 | unsigned int got; /* the symbol's .got.plt entry */ | |
219 | unsigned int plt; /* .plt */ | |
220 | } symbol_relocs; | |
221 | ||
222 | /* The offset of the resolver stub from the start of SYMBOL_ENTRY. | |
223 | The stub starts with "move.l #relocoffset,%d0". */ | |
224 | bfd_vma symbol_resolve_entry; | |
225 | }; | |
226 | ||
252b5132 RH |
227 | /* The size in bytes of an entry in the procedure linkage table. */ |
228 | ||
229 | #define PLT_ENTRY_SIZE 20 | |
230 | ||
231 | /* The first entry in a procedure linkage table looks like this. See | |
232 | the SVR4 ABI m68k supplement to see how this works. */ | |
233 | ||
234 | static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] = | |
235 | { | |
236 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ | |
cc3e26be | 237 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
252b5132 | 238 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */ |
cc3e26be | 239 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
252b5132 RH |
240 | 0, 0, 0, 0 /* pad out to 20 bytes. */ |
241 | }; | |
242 | ||
243 | /* Subsequent entries in a procedure linkage table look like this. */ | |
244 | ||
245 | static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] = | |
246 | { | |
247 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */ | |
cc3e26be | 248 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
252b5132 | 249 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
cc3e26be | 250 | 0, 0, 0, 0, /* + reloc index */ |
252b5132 | 251 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 252 | 0, 0, 0, 0 /* + .plt - . */ |
252b5132 RH |
253 | }; |
254 | ||
cc3e26be RS |
255 | static const struct elf_m68k_plt_info elf_m68k_plt_info = { |
256 | PLT_ENTRY_SIZE, | |
257 | elf_m68k_plt0_entry, { 4, 12 }, | |
258 | elf_m68k_plt_entry, { 4, 16 }, 8 | |
259 | }; | |
238d258f | 260 | |
cc3e26be | 261 | #define ISAB_PLT_ENTRY_SIZE 24 |
238d258f | 262 | |
cc3e26be | 263 | static const bfd_byte elf_isab_plt0_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 264 | { |
cc3e26be RS |
265 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
266 | 0, 0, 0, 0, /* + (.got + 4) - . */ | |
267 | 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */ | |
268 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
269 | 0, 0, 0, 0, /* + (.got + 8) - . */ | |
270 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
238d258f NC |
271 | 0x4e, 0xd0, /* jmp (%a0) */ |
272 | 0x4e, 0x71 /* nop */ | |
273 | }; | |
274 | ||
275 | /* Subsequent entries in a procedure linkage table look like this. */ | |
276 | ||
cc3e26be | 277 | static const bfd_byte elf_isab_plt_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 278 | { |
cc3e26be RS |
279 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
280 | 0, 0, 0, 0, /* + (.got.plt entry) - . */ | |
281 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
238d258f NC |
282 | 0x4e, 0xd0, /* jmp (%a0) */ |
283 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
cc3e26be | 284 | 0, 0, 0, 0, /* + reloc index */ |
238d258f | 285 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 286 | 0, 0, 0, 0 /* + .plt - . */ |
238d258f NC |
287 | }; |
288 | ||
cc3e26be RS |
289 | static const struct elf_m68k_plt_info elf_isab_plt_info = { |
290 | ISAB_PLT_ENTRY_SIZE, | |
291 | elf_isab_plt0_entry, { 2, 12 }, | |
292 | elf_isab_plt_entry, { 2, 20 }, 12 | |
293 | }; | |
9e1281c7 | 294 | |
cc3e26be | 295 | #define CPU32_PLT_ENTRY_SIZE 24 |
9e1281c7 | 296 | /* Procedure linkage table entries for the cpu32 */ |
cc3e26be | 297 | static const bfd_byte elf_cpu32_plt0_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 298 | { |
6091b433 | 299 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ |
cc3e26be | 300 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
6091b433 | 301 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
cc3e26be | 302 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
6091b433 | 303 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 CM |
304 | 0, 0, 0, 0, /* pad out to 24 bytes. */ |
305 | 0, 0 | |
306 | }; | |
307 | ||
cc3e26be | 308 | static const bfd_byte elf_cpu32_plt_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 309 | { |
1ca42bad | 310 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
cc3e26be | 311 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
1ca42bad | 312 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 | 313 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
cc3e26be | 314 | 0, 0, 0, 0, /* + reloc index */ |
9e1281c7 | 315 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 316 | 0, 0, 0, 0, /* + .plt - . */ |
9e1281c7 CM |
317 | 0, 0 |
318 | }; | |
319 | ||
cc3e26be RS |
320 | static const struct elf_m68k_plt_info elf_cpu32_plt_info = { |
321 | CPU32_PLT_ENTRY_SIZE, | |
322 | elf_cpu32_plt0_entry, { 4, 12 }, | |
323 | elf_cpu32_plt_entry, { 4, 18 }, 10 | |
324 | }; | |
325 | ||
252b5132 RH |
326 | /* The m68k linker needs to keep track of the number of relocs that it |
327 | decides to copy in check_relocs for each symbol. This is so that it | |
328 | can discard PC relative relocs if it doesn't need them when linking | |
329 | with -Bsymbolic. We store the information in a field extending the | |
330 | regular ELF linker hash table. */ | |
331 | ||
332 | /* This structure keeps track of the number of PC relative relocs we have | |
333 | copied for a given symbol. */ | |
334 | ||
335 | struct elf_m68k_pcrel_relocs_copied | |
336 | { | |
337 | /* Next section. */ | |
338 | struct elf_m68k_pcrel_relocs_copied *next; | |
339 | /* A section in dynobj. */ | |
340 | asection *section; | |
341 | /* Number of relocs copied in this section. */ | |
342 | bfd_size_type count; | |
343 | }; | |
344 | ||
345 | /* m68k ELF linker hash entry. */ | |
346 | ||
347 | struct elf_m68k_link_hash_entry | |
348 | { | |
349 | struct elf_link_hash_entry root; | |
350 | ||
351 | /* Number of PC relative relocs copied for this symbol. */ | |
352 | struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied; | |
353 | }; | |
354 | ||
0cca5f05 AS |
355 | #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent)) |
356 | ||
252b5132 RH |
357 | /* m68k ELF linker hash table. */ |
358 | ||
359 | struct elf_m68k_link_hash_table | |
360 | { | |
361 | struct elf_link_hash_table root; | |
b6152c34 AS |
362 | |
363 | /* Small local sym to section mapping cache. */ | |
364 | struct sym_sec_cache sym_sec; | |
cc3e26be RS |
365 | |
366 | /* The PLT format used by this link, or NULL if the format has not | |
367 | yet been chosen. */ | |
368 | const struct elf_m68k_plt_info *plt_info; | |
252b5132 RH |
369 | }; |
370 | ||
252b5132 RH |
371 | /* Get the m68k ELF linker hash table from a link_info structure. */ |
372 | ||
373 | #define elf_m68k_hash_table(p) \ | |
374 | ((struct elf_m68k_link_hash_table *) (p)->hash) | |
375 | ||
376 | /* Create an entry in an m68k ELF linker hash table. */ | |
377 | ||
378 | static struct bfd_hash_entry * | |
379 | elf_m68k_link_hash_newfunc (entry, table, string) | |
380 | struct bfd_hash_entry *entry; | |
381 | struct bfd_hash_table *table; | |
382 | const char *string; | |
383 | { | |
0cca5f05 | 384 | struct bfd_hash_entry *ret = entry; |
252b5132 RH |
385 | |
386 | /* Allocate the structure if it has not already been allocated by a | |
387 | subclass. */ | |
0cca5f05 AS |
388 | if (ret == NULL) |
389 | ret = bfd_hash_allocate (table, | |
390 | sizeof (struct elf_m68k_link_hash_entry)); | |
391 | if (ret == NULL) | |
392 | return ret; | |
252b5132 RH |
393 | |
394 | /* Call the allocation method of the superclass. */ | |
0cca5f05 AS |
395 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); |
396 | if (ret != NULL) | |
397 | elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
252b5132 | 398 | |
0cca5f05 | 399 | return ret; |
252b5132 RH |
400 | } |
401 | ||
402 | /* Create an m68k ELF linker hash table. */ | |
403 | ||
404 | static struct bfd_link_hash_table * | |
405 | elf_m68k_link_hash_table_create (abfd) | |
406 | bfd *abfd; | |
407 | { | |
408 | struct elf_m68k_link_hash_table *ret; | |
dc810e39 | 409 | bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table); |
252b5132 | 410 | |
e2d34d7d | 411 | ret = (struct elf_m68k_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
412 | if (ret == (struct elf_m68k_link_hash_table *) NULL) |
413 | return NULL; | |
414 | ||
66eb6687 AM |
415 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
416 | elf_m68k_link_hash_newfunc, | |
417 | sizeof (struct elf_m68k_link_hash_entry))) | |
252b5132 | 418 | { |
e2d34d7d | 419 | free (ret); |
252b5132 RH |
420 | return NULL; |
421 | } | |
422 | ||
b6152c34 | 423 | ret->sym_sec.abfd = NULL; |
cc3e26be | 424 | ret->plt_info = NULL; |
b6152c34 | 425 | |
252b5132 RH |
426 | return &ret->root.root; |
427 | } | |
428 | ||
266abb8f NS |
429 | /* Set the right machine number. */ |
430 | ||
431 | static bfd_boolean | |
432 | elf32_m68k_object_p (bfd *abfd) | |
433 | { | |
434 | unsigned int mach = 0; | |
435 | unsigned features = 0; | |
436 | flagword eflags = elf_elfheader (abfd)->e_flags; | |
437 | ||
438 | if (eflags & EF_M68K_M68000) | |
439 | features |= m68000; | |
440 | else if (eflags & EF_M68K_CPU32) | |
441 | features |= cpu32; | |
442 | else if (eflags & EF_M68K_ISA_MASK) | |
443 | { | |
444 | switch (eflags & EF_M68K_ISA_MASK) | |
445 | { | |
0b2e31dc | 446 | case EF_M68K_ISA_A_NODIV: |
266abb8f NS |
447 | features |= mcfisa_a; |
448 | break; | |
0b2e31dc NS |
449 | case EF_M68K_ISA_A: |
450 | features |= mcfisa_a|mcfhwdiv; | |
451 | break; | |
452 | case EF_M68K_ISA_A_PLUS: | |
453 | features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp; | |
454 | break; | |
455 | case EF_M68K_ISA_B_NOUSP: | |
456 | features |= mcfisa_a|mcfisa_b|mcfhwdiv; | |
457 | break; | |
458 | case EF_M68K_ISA_B: | |
459 | features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp; | |
460 | break; | |
266abb8f | 461 | } |
266abb8f NS |
462 | switch (eflags & EF_M68K_MAC_MASK) |
463 | { | |
464 | case EF_M68K_MAC: | |
465 | features |= mcfmac; | |
466 | break; | |
467 | case EF_M68K_EMAC: | |
468 | features |= mcfemac; | |
469 | break; | |
470 | } | |
266abb8f NS |
471 | if (eflags & EF_M68K_FLOAT) |
472 | features |= cfloat; | |
473 | } | |
474 | ||
475 | mach = bfd_m68k_features_to_mach (features); | |
476 | bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach); | |
477 | ||
478 | return TRUE; | |
479 | } | |
480 | ||
ae9a127f | 481 | /* Keep m68k-specific flags in the ELF header. */ |
b34976b6 | 482 | static bfd_boolean |
9e1281c7 CM |
483 | elf32_m68k_set_private_flags (abfd, flags) |
484 | bfd *abfd; | |
485 | flagword flags; | |
486 | { | |
487 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
488 | elf_flags_init (abfd) = TRUE; |
489 | return TRUE; | |
9e1281c7 CM |
490 | } |
491 | ||
9e1281c7 CM |
492 | /* Merge backend specific data from an object file to the output |
493 | object file when linking. */ | |
b34976b6 | 494 | static bfd_boolean |
9e1281c7 CM |
495 | elf32_m68k_merge_private_bfd_data (ibfd, obfd) |
496 | bfd *ibfd; | |
497 | bfd *obfd; | |
498 | { | |
499 | flagword out_flags; | |
500 | flagword in_flags; | |
a9d34880 RS |
501 | flagword out_isa; |
502 | flagword in_isa; | |
503 | const bfd_arch_info_type *arch_info; | |
266abb8f | 504 | |
9e1281c7 CM |
505 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
506 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
266abb8f NS |
507 | return FALSE; |
508 | ||
a9d34880 RS |
509 | /* Get the merged machine. This checks for incompatibility between |
510 | Coldfire & non-Coldfire flags, incompability between different | |
511 | Coldfire ISAs, and incompability between different MAC types. */ | |
512 | arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE); | |
513 | if (!arch_info) | |
514 | return FALSE; | |
9e1281c7 | 515 | |
a9d34880 RS |
516 | bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach); |
517 | ||
518 | in_flags = elf_elfheader (ibfd)->e_flags; | |
9e1281c7 CM |
519 | if (!elf_flags_init (obfd)) |
520 | { | |
b34976b6 | 521 | elf_flags_init (obfd) = TRUE; |
266abb8f NS |
522 | out_flags = in_flags; |
523 | } | |
524 | else | |
525 | { | |
a9d34880 RS |
526 | out_flags = elf_elfheader (obfd)->e_flags; |
527 | in_isa = (in_flags & EF_M68K_ISA_MASK); | |
528 | out_isa = (out_flags & EF_M68K_ISA_MASK); | |
529 | if (in_isa > out_isa) | |
530 | out_flags ^= in_isa ^ out_isa; | |
531 | out_flags |= in_flags ^ in_isa; | |
9e1281c7 | 532 | } |
266abb8f | 533 | elf_elfheader (obfd)->e_flags = out_flags; |
9e1281c7 | 534 | |
b34976b6 | 535 | return TRUE; |
9e1281c7 CM |
536 | } |
537 | ||
ae9a127f | 538 | /* Display the flags field. */ |
b34976b6 | 539 | static bfd_boolean |
9e1281c7 CM |
540 | elf32_m68k_print_private_bfd_data (abfd, ptr) |
541 | bfd *abfd; | |
542 | PTR ptr; | |
543 | { | |
544 | FILE *file = (FILE *) ptr; | |
266abb8f | 545 | flagword eflags = elf_elfheader (abfd)->e_flags; |
9e1281c7 CM |
546 | |
547 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
548 | ||
549 | /* Print normal ELF private data. */ | |
550 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
551 | ||
552 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
553 | ||
554 | /* xgettext:c-format */ | |
517662d4 | 555 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
9e1281c7 | 556 | |
266abb8f NS |
557 | if (eflags & EF_M68K_CPU32) |
558 | fprintf (file, " [cpu32]"); | |
559 | ||
560 | if (eflags & EF_M68K_M68000) | |
561 | fprintf (file, " [m68000]"); | |
9e1281c7 | 562 | |
266abb8f NS |
563 | if (eflags & EF_M68K_CFV4E) |
564 | fprintf (file, " [cfv4e]"); | |
76f57f3a | 565 | |
266abb8f NS |
566 | if (eflags & EF_M68K_ISA_MASK) |
567 | { | |
568 | char const *isa = _("unknown"); | |
569 | char const *mac = _("unknown"); | |
0b2e31dc | 570 | char const *additional = ""; |
266abb8f NS |
571 | |
572 | switch (eflags & EF_M68K_ISA_MASK) | |
573 | { | |
0b2e31dc NS |
574 | case EF_M68K_ISA_A_NODIV: |
575 | isa = "A"; | |
576 | additional = " [nodiv]"; | |
577 | break; | |
266abb8f NS |
578 | case EF_M68K_ISA_A: |
579 | isa = "A"; | |
580 | break; | |
581 | case EF_M68K_ISA_A_PLUS: | |
582 | isa = "A+"; | |
583 | break; | |
0b2e31dc NS |
584 | case EF_M68K_ISA_B_NOUSP: |
585 | isa = "B"; | |
586 | additional = " [nousp]"; | |
587 | break; | |
266abb8f NS |
588 | case EF_M68K_ISA_B: |
589 | isa = "B"; | |
590 | break; | |
591 | } | |
0b2e31dc NS |
592 | fprintf (file, " [isa %s]%s", isa, additional); |
593 | if (eflags & EF_M68K_FLOAT) | |
594 | fprintf (file, " [float]"); | |
266abb8f NS |
595 | switch (eflags & EF_M68K_MAC_MASK) |
596 | { | |
597 | case 0: | |
598 | mac = NULL; | |
599 | break; | |
600 | case EF_M68K_MAC: | |
601 | mac = "mac"; | |
602 | break; | |
603 | case EF_M68K_EMAC: | |
604 | mac = "emac"; | |
605 | break; | |
606 | } | |
607 | if (mac) | |
608 | fprintf (file, " [%s]", mac); | |
266abb8f NS |
609 | } |
610 | ||
9e1281c7 CM |
611 | fputc ('\n', file); |
612 | ||
b34976b6 | 613 | return TRUE; |
9e1281c7 | 614 | } |
252b5132 RH |
615 | /* Look through the relocs for a section during the first phase, and |
616 | allocate space in the global offset table or procedure linkage | |
617 | table. */ | |
618 | ||
b34976b6 | 619 | static bfd_boolean |
252b5132 RH |
620 | elf_m68k_check_relocs (abfd, info, sec, relocs) |
621 | bfd *abfd; | |
622 | struct bfd_link_info *info; | |
623 | asection *sec; | |
624 | const Elf_Internal_Rela *relocs; | |
625 | { | |
626 | bfd *dynobj; | |
627 | Elf_Internal_Shdr *symtab_hdr; | |
628 | struct elf_link_hash_entry **sym_hashes; | |
629 | bfd_signed_vma *local_got_refcounts; | |
630 | const Elf_Internal_Rela *rel; | |
631 | const Elf_Internal_Rela *rel_end; | |
632 | asection *sgot; | |
633 | asection *srelgot; | |
634 | asection *sreloc; | |
635 | ||
1049f94e | 636 | if (info->relocatable) |
b34976b6 | 637 | return TRUE; |
252b5132 RH |
638 | |
639 | dynobj = elf_hash_table (info)->dynobj; | |
640 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
641 | sym_hashes = elf_sym_hashes (abfd); | |
642 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
643 | ||
644 | sgot = NULL; | |
645 | srelgot = NULL; | |
646 | sreloc = NULL; | |
647 | ||
648 | rel_end = relocs + sec->reloc_count; | |
649 | for (rel = relocs; rel < rel_end; rel++) | |
650 | { | |
651 | unsigned long r_symndx; | |
652 | struct elf_link_hash_entry *h; | |
653 | ||
654 | r_symndx = ELF32_R_SYM (rel->r_info); | |
655 | ||
656 | if (r_symndx < symtab_hdr->sh_info) | |
657 | h = NULL; | |
658 | else | |
973a3492 L |
659 | { |
660 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
661 | while (h->root.type == bfd_link_hash_indirect | |
662 | || h->root.type == bfd_link_hash_warning) | |
663 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
664 | } | |
252b5132 RH |
665 | |
666 | switch (ELF32_R_TYPE (rel->r_info)) | |
667 | { | |
668 | case R_68K_GOT8: | |
669 | case R_68K_GOT16: | |
670 | case R_68K_GOT32: | |
671 | if (h != NULL | |
672 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
673 | break; | |
674 | /* Fall through. */ | |
675 | case R_68K_GOT8O: | |
676 | case R_68K_GOT16O: | |
677 | case R_68K_GOT32O: | |
678 | /* This symbol requires a global offset table entry. */ | |
679 | ||
680 | if (dynobj == NULL) | |
681 | { | |
682 | /* Create the .got section. */ | |
683 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
684 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 685 | return FALSE; |
252b5132 RH |
686 | } |
687 | ||
688 | if (sgot == NULL) | |
689 | { | |
690 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
691 | BFD_ASSERT (sgot != NULL); | |
692 | } | |
693 | ||
694 | if (srelgot == NULL | |
695 | && (h != NULL || info->shared)) | |
696 | { | |
697 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
698 | if (srelgot == NULL) | |
699 | { | |
3496cb2a L |
700 | srelgot = bfd_make_section_with_flags (dynobj, |
701 | ".rela.got", | |
702 | (SEC_ALLOC | |
703 | | SEC_LOAD | |
704 | | SEC_HAS_CONTENTS | |
705 | | SEC_IN_MEMORY | |
706 | | SEC_LINKER_CREATED | |
707 | | SEC_READONLY)); | |
252b5132 | 708 | if (srelgot == NULL |
252b5132 | 709 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 710 | return FALSE; |
252b5132 RH |
711 | } |
712 | } | |
713 | ||
714 | if (h != NULL) | |
715 | { | |
51b64d56 | 716 | if (h->got.refcount == 0) |
252b5132 | 717 | { |
252b5132 | 718 | /* Make sure this symbol is output as a dynamic symbol. */ |
b6152c34 | 719 | if (h->dynindx == -1 |
f5385ebf | 720 | && !h->forced_local) |
252b5132 | 721 | { |
c152c796 | 722 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 723 | return FALSE; |
252b5132 RH |
724 | } |
725 | ||
726 | /* Allocate space in the .got section. */ | |
eea6121a | 727 | sgot->size += 4; |
252b5132 | 728 | /* Allocate relocation space. */ |
eea6121a | 729 | srelgot->size += sizeof (Elf32_External_Rela); |
252b5132 | 730 | } |
51b64d56 | 731 | h->got.refcount++; |
252b5132 RH |
732 | } |
733 | else | |
734 | { | |
735 | /* This is a global offset table entry for a local symbol. */ | |
736 | if (local_got_refcounts == NULL) | |
737 | { | |
dc810e39 | 738 | bfd_size_type size; |
252b5132 | 739 | |
dc810e39 AM |
740 | size = symtab_hdr->sh_info; |
741 | size *= sizeof (bfd_signed_vma); | |
252b5132 | 742 | local_got_refcounts = ((bfd_signed_vma *) |
51b64d56 | 743 | bfd_zalloc (abfd, size)); |
252b5132 | 744 | if (local_got_refcounts == NULL) |
b34976b6 | 745 | return FALSE; |
252b5132 | 746 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 747 | } |
51b64d56 | 748 | if (local_got_refcounts[r_symndx] == 0) |
252b5132 | 749 | { |
eea6121a | 750 | sgot->size += 4; |
252b5132 RH |
751 | if (info->shared) |
752 | { | |
753 | /* If we are generating a shared object, we need to | |
754 | output a R_68K_RELATIVE reloc so that the dynamic | |
755 | linker can adjust this GOT entry. */ | |
eea6121a | 756 | srelgot->size += sizeof (Elf32_External_Rela); |
252b5132 RH |
757 | } |
758 | } | |
51b64d56 | 759 | local_got_refcounts[r_symndx]++; |
252b5132 RH |
760 | } |
761 | break; | |
762 | ||
763 | case R_68K_PLT8: | |
764 | case R_68K_PLT16: | |
765 | case R_68K_PLT32: | |
766 | /* This symbol requires a procedure linkage table entry. We | |
767 | actually build the entry in adjust_dynamic_symbol, | |
768 | because this might be a case of linking PIC code which is | |
769 | never referenced by a dynamic object, in which case we | |
770 | don't need to generate a procedure linkage table entry | |
771 | after all. */ | |
772 | ||
773 | /* If this is a local symbol, we resolve it directly without | |
774 | creating a procedure linkage table entry. */ | |
775 | if (h == NULL) | |
776 | continue; | |
777 | ||
f5385ebf | 778 | h->needs_plt = 1; |
51b64d56 | 779 | h->plt.refcount++; |
252b5132 RH |
780 | break; |
781 | ||
782 | case R_68K_PLT8O: | |
783 | case R_68K_PLT16O: | |
784 | case R_68K_PLT32O: | |
785 | /* This symbol requires a procedure linkage table entry. */ | |
786 | ||
787 | if (h == NULL) | |
788 | { | |
789 | /* It does not make sense to have this relocation for a | |
790 | local symbol. FIXME: does it? How to handle it if | |
791 | it does make sense? */ | |
792 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 793 | return FALSE; |
252b5132 RH |
794 | } |
795 | ||
796 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 797 | if (h->dynindx == -1 |
f5385ebf | 798 | && !h->forced_local) |
252b5132 | 799 | { |
c152c796 | 800 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 801 | return FALSE; |
252b5132 RH |
802 | } |
803 | ||
f5385ebf | 804 | h->needs_plt = 1; |
51b64d56 | 805 | h->plt.refcount++; |
252b5132 RH |
806 | break; |
807 | ||
808 | case R_68K_PC8: | |
809 | case R_68K_PC16: | |
810 | case R_68K_PC32: | |
811 | /* If we are creating a shared library and this is not a local | |
812 | symbol, we need to copy the reloc into the shared library. | |
813 | However when linking with -Bsymbolic and this is a global | |
814 | symbol which is defined in an object we are including in the | |
815 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
816 | reloc directly. At this point we have not seen all the input | |
817 | files, so it is possible that DEF_REGULAR is not set now but | |
818 | will be set later (it is never cleared). We account for that | |
819 | possibility below by storing information in the | |
820 | pcrel_relocs_copied field of the hash table entry. */ | |
821 | if (!(info->shared | |
822 | && (sec->flags & SEC_ALLOC) != 0 | |
823 | && h != NULL | |
824 | && (!info->symbolic | |
b6152c34 | 825 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 826 | || !h->def_regular))) |
252b5132 RH |
827 | { |
828 | if (h != NULL) | |
829 | { | |
830 | /* Make sure a plt entry is created for this symbol if | |
831 | it turns out to be a function defined by a dynamic | |
832 | object. */ | |
51b64d56 | 833 | h->plt.refcount++; |
252b5132 RH |
834 | } |
835 | break; | |
836 | } | |
837 | /* Fall through. */ | |
838 | case R_68K_8: | |
839 | case R_68K_16: | |
840 | case R_68K_32: | |
841 | if (h != NULL) | |
842 | { | |
843 | /* Make sure a plt entry is created for this symbol if it | |
844 | turns out to be a function defined by a dynamic object. */ | |
51b64d56 | 845 | h->plt.refcount++; |
252b5132 RH |
846 | } |
847 | ||
848 | /* If we are creating a shared library, we need to copy the | |
849 | reloc into the shared library. */ | |
850 | if (info->shared | |
851 | && (sec->flags & SEC_ALLOC) != 0) | |
852 | { | |
853 | /* When creating a shared object, we must copy these | |
854 | reloc types into the output file. We create a reloc | |
855 | section in dynobj and make room for this reloc. */ | |
856 | if (sreloc == NULL) | |
857 | { | |
858 | const char *name; | |
859 | ||
860 | name = (bfd_elf_string_from_elf_section | |
861 | (abfd, | |
862 | elf_elfheader (abfd)->e_shstrndx, | |
863 | elf_section_data (sec)->rel_hdr.sh_name)); | |
864 | if (name == NULL) | |
b34976b6 | 865 | return FALSE; |
252b5132 RH |
866 | |
867 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
868 | && strcmp (bfd_get_section_name (abfd, sec), | |
869 | name + 5) == 0); | |
870 | ||
871 | sreloc = bfd_get_section_by_name (dynobj, name); | |
872 | if (sreloc == NULL) | |
873 | { | |
3496cb2a L |
874 | sreloc = bfd_make_section_with_flags (dynobj, |
875 | name, | |
876 | (SEC_ALLOC | |
877 | | SEC_LOAD | |
878 | | SEC_HAS_CONTENTS | |
879 | | SEC_IN_MEMORY | |
880 | | SEC_LINKER_CREATED | |
881 | | SEC_READONLY)); | |
252b5132 | 882 | if (sreloc == NULL |
252b5132 | 883 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) |
b34976b6 | 884 | return FALSE; |
252b5132 | 885 | } |
d2ff124f | 886 | elf_section_data (sec)->sreloc = sreloc; |
252b5132 RH |
887 | } |
888 | ||
3e829b4a AS |
889 | if (sec->flags & SEC_READONLY |
890 | /* Don't set DF_TEXTREL yet for PC relative | |
891 | relocations, they might be discarded later. */ | |
892 | && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8 | |
893 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
894 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)) | |
895 | info->flags |= DF_TEXTREL; | |
896 | ||
eea6121a | 897 | sreloc->size += sizeof (Elf32_External_Rela); |
252b5132 | 898 | |
b6152c34 AS |
899 | /* We count the number of PC relative relocations we have |
900 | entered for this symbol, so that we can discard them | |
901 | again if, in the -Bsymbolic case, the symbol is later | |
902 | defined by a regular object, or, in the normal shared | |
903 | case, the symbol is forced to be local. Note that this | |
904 | function is only called if we are using an m68kelf linker | |
905 | hash table, which means that h is really a pointer to an | |
252b5132 | 906 | elf_m68k_link_hash_entry. */ |
b6152c34 AS |
907 | if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8 |
908 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
909 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32) | |
252b5132 | 910 | { |
252b5132 | 911 | struct elf_m68k_pcrel_relocs_copied *p; |
b6152c34 AS |
912 | struct elf_m68k_pcrel_relocs_copied **head; |
913 | ||
914 | if (h != NULL) | |
915 | { | |
916 | struct elf_m68k_link_hash_entry *eh | |
0cca5f05 | 917 | = elf_m68k_hash_entry (h); |
b6152c34 AS |
918 | head = &eh->pcrel_relocs_copied; |
919 | } | |
920 | else | |
921 | { | |
922 | asection *s; | |
6edfbbad DJ |
923 | void *vpp; |
924 | ||
b6152c34 AS |
925 | s = (bfd_section_from_r_symndx |
926 | (abfd, &elf_m68k_hash_table (info)->sym_sec, | |
927 | sec, r_symndx)); | |
928 | if (s == NULL) | |
929 | return FALSE; | |
252b5132 | 930 | |
6edfbbad DJ |
931 | vpp = &elf_section_data (s)->local_dynrel; |
932 | head = (struct elf_m68k_pcrel_relocs_copied **) vpp; | |
b6152c34 | 933 | } |
252b5132 | 934 | |
b6152c34 | 935 | for (p = *head; p != NULL; p = p->next) |
252b5132 RH |
936 | if (p->section == sreloc) |
937 | break; | |
938 | ||
939 | if (p == NULL) | |
940 | { | |
941 | p = ((struct elf_m68k_pcrel_relocs_copied *) | |
dc810e39 | 942 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
252b5132 | 943 | if (p == NULL) |
b34976b6 | 944 | return FALSE; |
b6152c34 AS |
945 | p->next = *head; |
946 | *head = p; | |
252b5132 RH |
947 | p->section = sreloc; |
948 | p->count = 0; | |
949 | } | |
950 | ||
951 | ++p->count; | |
952 | } | |
953 | } | |
954 | ||
955 | break; | |
956 | ||
957 | /* This relocation describes the C++ object vtable hierarchy. | |
958 | Reconstruct it for later use during GC. */ | |
959 | case R_68K_GNU_VTINHERIT: | |
c152c796 | 960 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 961 | return FALSE; |
252b5132 RH |
962 | break; |
963 | ||
964 | /* This relocation describes which C++ vtable entries are actually | |
965 | used. Record for later use during GC. */ | |
966 | case R_68K_GNU_VTENTRY: | |
c152c796 | 967 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 968 | return FALSE; |
252b5132 RH |
969 | break; |
970 | ||
971 | default: | |
972 | break; | |
973 | } | |
974 | } | |
975 | ||
b34976b6 | 976 | return TRUE; |
252b5132 RH |
977 | } |
978 | ||
979 | /* Return the section that should be marked against GC for a given | |
980 | relocation. */ | |
981 | ||
982 | static asection * | |
1e2f5b6e AM |
983 | elf_m68k_gc_mark_hook (sec, info, rel, h, sym) |
984 | asection *sec; | |
121089cb | 985 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
986 | Elf_Internal_Rela *rel; |
987 | struct elf_link_hash_entry *h; | |
988 | Elf_Internal_Sym *sym; | |
989 | { | |
990 | if (h != NULL) | |
991 | { | |
992 | switch (ELF32_R_TYPE (rel->r_info)) | |
993 | { | |
994 | case R_68K_GNU_VTINHERIT: | |
995 | case R_68K_GNU_VTENTRY: | |
996 | break; | |
997 | ||
998 | default: | |
999 | switch (h->root.type) | |
1000 | { | |
1001 | default: | |
1002 | break; | |
1003 | ||
1004 | case bfd_link_hash_defined: | |
1005 | case bfd_link_hash_defweak: | |
1006 | return h->root.u.def.section; | |
1007 | ||
1008 | case bfd_link_hash_common: | |
1009 | return h->root.u.c.p->section; | |
1010 | } | |
1011 | } | |
1012 | } | |
1013 | else | |
1e2f5b6e | 1014 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
1015 | |
1016 | return NULL; | |
1017 | } | |
1018 | ||
1019 | /* Update the got entry reference counts for the section being removed. */ | |
1020 | ||
b34976b6 | 1021 | static bfd_boolean |
252b5132 RH |
1022 | elf_m68k_gc_sweep_hook (abfd, info, sec, relocs) |
1023 | bfd *abfd; | |
1024 | struct bfd_link_info *info; | |
1025 | asection *sec; | |
1026 | const Elf_Internal_Rela *relocs; | |
1027 | { | |
1028 | Elf_Internal_Shdr *symtab_hdr; | |
1029 | struct elf_link_hash_entry **sym_hashes; | |
1030 | bfd_signed_vma *local_got_refcounts; | |
1031 | const Elf_Internal_Rela *rel, *relend; | |
252b5132 | 1032 | bfd *dynobj; |
dd5724d5 AM |
1033 | asection *sgot; |
1034 | asection *srelgot; | |
252b5132 | 1035 | |
252b5132 | 1036 | dynobj = elf_hash_table (info)->dynobj; |
dd5724d5 | 1037 | if (dynobj == NULL) |
b34976b6 | 1038 | return TRUE; |
dd5724d5 | 1039 | |
4f075348 KH |
1040 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1041 | sym_hashes = elf_sym_hashes (abfd); | |
1042 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1043 | ||
dd5724d5 AM |
1044 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1045 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
252b5132 RH |
1046 | |
1047 | relend = relocs + sec->reloc_count; | |
1048 | for (rel = relocs; rel < relend; rel++) | |
1049 | { | |
4f075348 | 1050 | unsigned long r_symndx; |
3eb128b2 AM |
1051 | struct elf_link_hash_entry *h = NULL; |
1052 | ||
1053 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1054 | if (r_symndx >= symtab_hdr->sh_info) | |
1055 | { | |
1056 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1057 | while (h->root.type == bfd_link_hash_indirect | |
1058 | || h->root.type == bfd_link_hash_warning) | |
1059 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1060 | } | |
4f075348 | 1061 | |
252b5132 RH |
1062 | switch (ELF32_R_TYPE (rel->r_info)) |
1063 | { | |
1064 | case R_68K_GOT8: | |
1065 | case R_68K_GOT16: | |
1066 | case R_68K_GOT32: | |
1067 | case R_68K_GOT8O: | |
1068 | case R_68K_GOT16O: | |
1069 | case R_68K_GOT32O: | |
3eb128b2 | 1070 | if (h != NULL) |
252b5132 | 1071 | { |
252b5132 RH |
1072 | if (h->got.refcount > 0) |
1073 | { | |
1074 | --h->got.refcount; | |
1075 | if (h->got.refcount == 0) | |
1076 | { | |
1077 | /* We don't need the .got entry any more. */ | |
eea6121a AM |
1078 | sgot->size -= 4; |
1079 | srelgot->size -= sizeof (Elf32_External_Rela); | |
252b5132 RH |
1080 | } |
1081 | } | |
1082 | } | |
dd5724d5 | 1083 | else if (local_got_refcounts != NULL) |
252b5132 RH |
1084 | { |
1085 | if (local_got_refcounts[r_symndx] > 0) | |
1086 | { | |
1087 | --local_got_refcounts[r_symndx]; | |
1088 | if (local_got_refcounts[r_symndx] == 0) | |
1089 | { | |
1090 | /* We don't need the .got entry any more. */ | |
eea6121a | 1091 | sgot->size -= 4; |
252b5132 | 1092 | if (info->shared) |
eea6121a | 1093 | srelgot->size -= sizeof (Elf32_External_Rela); |
252b5132 RH |
1094 | } |
1095 | } | |
1096 | } | |
1097 | break; | |
1098 | ||
1099 | case R_68K_PLT8: | |
1100 | case R_68K_PLT16: | |
1101 | case R_68K_PLT32: | |
1102 | case R_68K_PLT8O: | |
1103 | case R_68K_PLT16O: | |
1104 | case R_68K_PLT32O: | |
1105 | case R_68K_PC8: | |
1106 | case R_68K_PC16: | |
1107 | case R_68K_PC32: | |
1108 | case R_68K_8: | |
1109 | case R_68K_16: | |
1110 | case R_68K_32: | |
3eb128b2 | 1111 | if (h != NULL) |
252b5132 | 1112 | { |
252b5132 RH |
1113 | if (h->plt.refcount > 0) |
1114 | --h->plt.refcount; | |
1115 | } | |
1116 | break; | |
1117 | ||
1118 | default: | |
1119 | break; | |
1120 | } | |
1121 | } | |
1122 | ||
b34976b6 | 1123 | return TRUE; |
252b5132 | 1124 | } |
cc3e26be RS |
1125 | \f |
1126 | /* Return the type of PLT associated with OUTPUT_BFD. */ | |
1127 | ||
1128 | static const struct elf_m68k_plt_info * | |
1129 | elf_m68k_get_plt_info (bfd *output_bfd) | |
1130 | { | |
1131 | unsigned int features; | |
1132 | ||
1133 | features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd)); | |
1134 | if (features & cpu32) | |
1135 | return &elf_cpu32_plt_info; | |
1136 | if (features & mcfisa_b) | |
1137 | return &elf_isab_plt_info; | |
1138 | return &elf_m68k_plt_info; | |
1139 | } | |
1140 | ||
1141 | /* This function is called after all the input files have been read, | |
1142 | and the input sections have been assigned to output sections. | |
1143 | It's a convenient place to determine the PLT style. */ | |
1144 | ||
1145 | static bfd_boolean | |
1146 | elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) | |
1147 | { | |
1148 | elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd); | |
1149 | return TRUE; | |
1150 | } | |
252b5132 | 1151 | |
252b5132 RH |
1152 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1153 | regular object. The current definition is in some section of the | |
1154 | dynamic object, but we're not including those sections. We have to | |
1155 | change the definition to something the rest of the link can | |
1156 | understand. */ | |
1157 | ||
b34976b6 | 1158 | static bfd_boolean |
252b5132 RH |
1159 | elf_m68k_adjust_dynamic_symbol (info, h) |
1160 | struct bfd_link_info *info; | |
1161 | struct elf_link_hash_entry *h; | |
1162 | { | |
cc3e26be | 1163 | struct elf_m68k_link_hash_table *htab; |
252b5132 RH |
1164 | bfd *dynobj; |
1165 | asection *s; | |
1166 | unsigned int power_of_two; | |
1167 | ||
cc3e26be | 1168 | htab = elf_m68k_hash_table (info); |
252b5132 RH |
1169 | dynobj = elf_hash_table (info)->dynobj; |
1170 | ||
1171 | /* Make sure we know what is going on here. */ | |
1172 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 1173 | && (h->needs_plt |
f6e332e6 | 1174 | || h->u.weakdef != NULL |
f5385ebf AM |
1175 | || (h->def_dynamic |
1176 | && h->ref_regular | |
1177 | && !h->def_regular))); | |
252b5132 RH |
1178 | |
1179 | /* If this is a function, put it in the procedure linkage table. We | |
1180 | will fill in the contents of the procedure linkage table later, | |
1181 | when we know the address of the .got section. */ | |
1182 | if (h->type == STT_FUNC | |
f5385ebf | 1183 | || h->needs_plt) |
252b5132 | 1184 | { |
9dfe8738 AS |
1185 | if ((h->plt.refcount <= 0 |
1186 | || SYMBOL_CALLS_LOCAL (info, h) | |
1187 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1188 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
1189 | /* We must always create the plt entry if it was referenced |
1190 | by a PLTxxO relocation. In this case we already recorded | |
1191 | it as a dynamic symbol. */ | |
1192 | && h->dynindx == -1) | |
1193 | { | |
1194 | /* This case can occur if we saw a PLTxx reloc in an input | |
1195 | file, but the symbol was never referred to by a dynamic | |
9dfe8738 AS |
1196 | object, or if all references were garbage collected. In |
1197 | such a case, we don't actually need to build a procedure | |
1198 | linkage table, and we can just do a PCxx reloc instead. */ | |
252b5132 | 1199 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1200 | h->needs_plt = 0; |
b34976b6 | 1201 | return TRUE; |
252b5132 RH |
1202 | } |
1203 | ||
1204 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 1205 | if (h->dynindx == -1 |
f5385ebf | 1206 | && !h->forced_local) |
252b5132 | 1207 | { |
c152c796 | 1208 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1209 | return FALSE; |
252b5132 RH |
1210 | } |
1211 | ||
1212 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
1213 | BFD_ASSERT (s != NULL); | |
1214 | ||
1215 | /* If this is the first .plt entry, make room for the special | |
1216 | first entry. */ | |
eea6121a | 1217 | if (s->size == 0) |
cc3e26be | 1218 | s->size = htab->plt_info->size; |
252b5132 RH |
1219 | |
1220 | /* If this symbol is not defined in a regular file, and we are | |
1221 | not generating a shared library, then set the symbol to this | |
1222 | location in the .plt. This is required to make function | |
1223 | pointers compare as equal between the normal executable and | |
1224 | the shared library. */ | |
1225 | if (!info->shared | |
f5385ebf | 1226 | && !h->def_regular) |
252b5132 RH |
1227 | { |
1228 | h->root.u.def.section = s; | |
eea6121a | 1229 | h->root.u.def.value = s->size; |
252b5132 RH |
1230 | } |
1231 | ||
eea6121a | 1232 | h->plt.offset = s->size; |
252b5132 RH |
1233 | |
1234 | /* Make room for this entry. */ | |
cc3e26be | 1235 | s->size += htab->plt_info->size; |
252b5132 RH |
1236 | |
1237 | /* We also need to make an entry in the .got.plt section, which | |
1238 | will be placed in the .got section by the linker script. */ | |
252b5132 RH |
1239 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
1240 | BFD_ASSERT (s != NULL); | |
eea6121a | 1241 | s->size += 4; |
252b5132 RH |
1242 | |
1243 | /* We also need to make an entry in the .rela.plt section. */ | |
252b5132 RH |
1244 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
1245 | BFD_ASSERT (s != NULL); | |
eea6121a | 1246 | s->size += sizeof (Elf32_External_Rela); |
252b5132 | 1247 | |
b34976b6 | 1248 | return TRUE; |
252b5132 RH |
1249 | } |
1250 | ||
1251 | /* Reinitialize the plt offset now that it is not used as a reference | |
1252 | count any more. */ | |
1253 | h->plt.offset = (bfd_vma) -1; | |
1254 | ||
1255 | /* If this is a weak symbol, and there is a real definition, the | |
1256 | processor independent code will have arranged for us to see the | |
1257 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1258 | if (h->u.weakdef != NULL) |
252b5132 | 1259 | { |
f6e332e6 AM |
1260 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1261 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1262 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1263 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1264 | return TRUE; |
252b5132 RH |
1265 | } |
1266 | ||
1267 | /* This is a reference to a symbol defined by a dynamic object which | |
1268 | is not a function. */ | |
1269 | ||
1270 | /* If we are creating a shared library, we must presume that the | |
1271 | only references to the symbol are via the global offset table. | |
1272 | For such cases we need not do anything here; the relocations will | |
1273 | be handled correctly by relocate_section. */ | |
1274 | if (info->shared) | |
b34976b6 | 1275 | return TRUE; |
252b5132 | 1276 | |
909272ee AM |
1277 | if (h->size == 0) |
1278 | { | |
1279 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1280 | h->root.root.string); | |
1281 | return TRUE; | |
1282 | } | |
1283 | ||
252b5132 RH |
1284 | /* We must allocate the symbol in our .dynbss section, which will |
1285 | become part of the .bss section of the executable. There will be | |
1286 | an entry for this symbol in the .dynsym section. The dynamic | |
1287 | object will contain position independent code, so all references | |
1288 | from the dynamic object to this symbol will go through the global | |
1289 | offset table. The dynamic linker will use the .dynsym entry to | |
1290 | determine the address it must put in the global offset table, so | |
1291 | both the dynamic object and the regular object will refer to the | |
1292 | same memory location for the variable. */ | |
1293 | ||
1294 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1295 | BFD_ASSERT (s != NULL); | |
1296 | ||
1297 | /* We must generate a R_68K_COPY reloc to tell the dynamic linker to | |
1298 | copy the initial value out of the dynamic object and into the | |
1299 | runtime process image. We need to remember the offset into the | |
1300 | .rela.bss section we are going to use. */ | |
1301 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1302 | { | |
1303 | asection *srel; | |
1304 | ||
1305 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1306 | BFD_ASSERT (srel != NULL); | |
eea6121a | 1307 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1308 | h->needs_copy = 1; |
252b5132 RH |
1309 | } |
1310 | ||
1311 | /* We need to figure out the alignment required for this symbol. I | |
1312 | have no idea how ELF linkers handle this. */ | |
1313 | power_of_two = bfd_log2 (h->size); | |
1314 | if (power_of_two > 3) | |
1315 | power_of_two = 3; | |
1316 | ||
1317 | /* Apply the required alignment. */ | |
eea6121a | 1318 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
252b5132 RH |
1319 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
1320 | { | |
1321 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 1322 | return FALSE; |
252b5132 RH |
1323 | } |
1324 | ||
1325 | /* Define the symbol as being at this point in the section. */ | |
1326 | h->root.u.def.section = s; | |
eea6121a | 1327 | h->root.u.def.value = s->size; |
252b5132 RH |
1328 | |
1329 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 1330 | s->size += h->size; |
252b5132 | 1331 | |
b34976b6 | 1332 | return TRUE; |
252b5132 RH |
1333 | } |
1334 | ||
1335 | /* Set the sizes of the dynamic sections. */ | |
1336 | ||
b34976b6 | 1337 | static bfd_boolean |
252b5132 | 1338 | elf_m68k_size_dynamic_sections (output_bfd, info) |
aa91b392 | 1339 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1340 | struct bfd_link_info *info; |
1341 | { | |
1342 | bfd *dynobj; | |
1343 | asection *s; | |
b34976b6 AM |
1344 | bfd_boolean plt; |
1345 | bfd_boolean relocs; | |
252b5132 RH |
1346 | |
1347 | dynobj = elf_hash_table (info)->dynobj; | |
1348 | BFD_ASSERT (dynobj != NULL); | |
1349 | ||
1350 | if (elf_hash_table (info)->dynamic_sections_created) | |
1351 | { | |
1352 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1353 | if (info->executable) |
252b5132 RH |
1354 | { |
1355 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1356 | BFD_ASSERT (s != NULL); | |
eea6121a | 1357 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
1358 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1359 | } | |
1360 | } | |
1361 | else | |
1362 | { | |
1363 | /* We may have created entries in the .rela.got section. | |
1364 | However, if we are not creating the dynamic sections, we will | |
1365 | not actually use these entries. Reset the size of .rela.got, | |
1366 | which will cause it to get stripped from the output file | |
1367 | below. */ | |
1368 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1369 | if (s != NULL) | |
eea6121a | 1370 | s->size = 0; |
252b5132 RH |
1371 | } |
1372 | ||
b6152c34 AS |
1373 | /* If this is a -Bsymbolic shared link, then we need to discard all |
1374 | PC relative relocs against symbols defined in a regular object. | |
1375 | For the normal shared case we discard the PC relative relocs | |
1376 | against symbols that have become local due to visibility changes. | |
1377 | We allocated space for them in the check_relocs routine, but we | |
1378 | will not fill them in in the relocate_section routine. */ | |
1379 | if (info->shared) | |
0cca5f05 AS |
1380 | elf_link_hash_traverse (elf_hash_table (info), |
1381 | elf_m68k_discard_copies, | |
1382 | (PTR) info); | |
252b5132 RH |
1383 | |
1384 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1385 | determined the sizes of the various dynamic sections. Allocate | |
1386 | memory for them. */ | |
b34976b6 AM |
1387 | plt = FALSE; |
1388 | relocs = FALSE; | |
252b5132 RH |
1389 | for (s = dynobj->sections; s != NULL; s = s->next) |
1390 | { | |
1391 | const char *name; | |
252b5132 RH |
1392 | |
1393 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1394 | continue; | |
1395 | ||
1396 | /* It's OK to base decisions on the section name, because none | |
1397 | of the dynobj section names depend upon the input files. */ | |
1398 | name = bfd_get_section_name (dynobj, s); | |
1399 | ||
252b5132 RH |
1400 | if (strcmp (name, ".plt") == 0) |
1401 | { | |
c456f082 AM |
1402 | /* Remember whether there is a PLT. */ |
1403 | plt = s->size != 0; | |
252b5132 RH |
1404 | } |
1405 | else if (strncmp (name, ".rela", 5) == 0) | |
1406 | { | |
c456f082 | 1407 | if (s->size != 0) |
252b5132 | 1408 | { |
b34976b6 | 1409 | relocs = TRUE; |
252b5132 RH |
1410 | |
1411 | /* We use the reloc_count field as a counter if we need | |
1412 | to copy relocs into the output file. */ | |
1413 | s->reloc_count = 0; | |
1414 | } | |
1415 | } | |
c456f082 AM |
1416 | else if (strncmp (name, ".got", 4) != 0 |
1417 | && strcmp (name, ".dynbss") != 0) | |
252b5132 RH |
1418 | { |
1419 | /* It's not one of our sections, so don't allocate space. */ | |
1420 | continue; | |
1421 | } | |
1422 | ||
c456f082 | 1423 | if (s->size == 0) |
252b5132 | 1424 | { |
c456f082 AM |
1425 | /* If we don't need this section, strip it from the |
1426 | output file. This is mostly to handle .rela.bss and | |
1427 | .rela.plt. We must create both sections in | |
1428 | create_dynamic_sections, because they must be created | |
1429 | before the linker maps input sections to output | |
1430 | sections. The linker does that before | |
1431 | adjust_dynamic_symbol is called, and it is that | |
1432 | function which decides whether anything needs to go | |
1433 | into these sections. */ | |
8423293d | 1434 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
1435 | continue; |
1436 | } | |
1437 | ||
c456f082 AM |
1438 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1439 | continue; | |
1440 | ||
252b5132 | 1441 | /* Allocate memory for the section contents. */ |
7a9af8c4 NC |
1442 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
1443 | Unused entries should be reclaimed before the section's contents | |
1444 | are written out, but at the moment this does not happen. Thus in | |
1445 | order to prevent writing out garbage, we initialise the section's | |
1446 | contents to zero. */ | |
eea6121a | 1447 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 1448 | if (s->contents == NULL) |
b34976b6 | 1449 | return FALSE; |
252b5132 RH |
1450 | } |
1451 | ||
1452 | if (elf_hash_table (info)->dynamic_sections_created) | |
1453 | { | |
1454 | /* Add some entries to the .dynamic section. We fill in the | |
1455 | values later, in elf_m68k_finish_dynamic_sections, but we | |
1456 | must add the entries now so that we get the correct size for | |
1457 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1458 | dynamic linker and used by the debugger. */ | |
dc810e39 | 1459 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1460 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 1461 | |
252b5132 RH |
1462 | if (!info->shared) |
1463 | { | |
dc810e39 | 1464 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1465 | return FALSE; |
252b5132 RH |
1466 | } |
1467 | ||
1468 | if (plt) | |
1469 | { | |
dc810e39 AM |
1470 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1471 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1472 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1473 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1474 | return FALSE; |
252b5132 RH |
1475 | } |
1476 | ||
1477 | if (relocs) | |
1478 | { | |
dc810e39 AM |
1479 | if (!add_dynamic_entry (DT_RELA, 0) |
1480 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1481 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1482 | return FALSE; |
252b5132 RH |
1483 | } |
1484 | ||
aa91b392 | 1485 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 1486 | { |
dc810e39 | 1487 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1488 | return FALSE; |
252b5132 RH |
1489 | } |
1490 | } | |
dc810e39 | 1491 | #undef add_dynamic_entry |
252b5132 | 1492 | |
b34976b6 | 1493 | return TRUE; |
252b5132 RH |
1494 | } |
1495 | ||
0cca5f05 | 1496 | /* This function is called via elf_link_hash_traverse if we are |
b6152c34 AS |
1497 | creating a shared object. In the -Bsymbolic case it discards the |
1498 | space allocated to copy PC relative relocs against symbols which | |
3e829b4a | 1499 | are defined in regular objects. For the normal shared case, it |
b6152c34 AS |
1500 | discards space for pc-relative relocs that have become local due to |
1501 | symbol visibility changes. We allocated space for them in the | |
1502 | check_relocs routine, but we won't fill them in in the | |
3e829b4a AS |
1503 | relocate_section routine. |
1504 | ||
1505 | We also check whether any of the remaining relocations apply | |
1506 | against a readonly section, and set the DF_TEXTREL flag in this | |
1507 | case. */ | |
252b5132 | 1508 | |
b34976b6 | 1509 | static bfd_boolean |
b6152c34 | 1510 | elf_m68k_discard_copies (h, inf) |
0cca5f05 | 1511 | struct elf_link_hash_entry *h; |
b6152c34 | 1512 | PTR inf; |
252b5132 | 1513 | { |
b6152c34 | 1514 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
252b5132 RH |
1515 | struct elf_m68k_pcrel_relocs_copied *s; |
1516 | ||
0cca5f05 AS |
1517 | if (h->root.type == bfd_link_hash_warning) |
1518 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e92d460e | 1519 | |
f5385ebf | 1520 | if (!h->def_regular |
b6152c34 | 1521 | || (!info->symbolic |
f5385ebf | 1522 | && !h->forced_local)) |
3e829b4a AS |
1523 | { |
1524 | if ((info->flags & DF_TEXTREL) == 0) | |
1525 | { | |
1526 | /* Look for relocations against read-only sections. */ | |
0cca5f05 AS |
1527 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
1528 | s != NULL; | |
1529 | s = s->next) | |
3e829b4a AS |
1530 | if ((s->section->flags & SEC_READONLY) != 0) |
1531 | { | |
1532 | info->flags |= DF_TEXTREL; | |
1533 | break; | |
1534 | } | |
1535 | } | |
0cca5f05 | 1536 | |
3e829b4a AS |
1537 | return TRUE; |
1538 | } | |
252b5132 | 1539 | |
0cca5f05 AS |
1540 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
1541 | s != NULL; | |
1542 | s = s->next) | |
eea6121a | 1543 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
252b5132 | 1544 | |
b34976b6 | 1545 | return TRUE; |
252b5132 RH |
1546 | } |
1547 | ||
1548 | /* Relocate an M68K ELF section. */ | |
1549 | ||
b34976b6 | 1550 | static bfd_boolean |
252b5132 RH |
1551 | elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section, |
1552 | contents, relocs, local_syms, local_sections) | |
1553 | bfd *output_bfd; | |
1554 | struct bfd_link_info *info; | |
1555 | bfd *input_bfd; | |
1556 | asection *input_section; | |
1557 | bfd_byte *contents; | |
1558 | Elf_Internal_Rela *relocs; | |
1559 | Elf_Internal_Sym *local_syms; | |
1560 | asection **local_sections; | |
1561 | { | |
1562 | bfd *dynobj; | |
1563 | Elf_Internal_Shdr *symtab_hdr; | |
1564 | struct elf_link_hash_entry **sym_hashes; | |
1565 | bfd_vma *local_got_offsets; | |
1566 | asection *sgot; | |
1567 | asection *splt; | |
1568 | asection *sreloc; | |
1569 | Elf_Internal_Rela *rel; | |
1570 | Elf_Internal_Rela *relend; | |
1571 | ||
1049f94e | 1572 | if (info->relocatable) |
b34976b6 | 1573 | return TRUE; |
b491616a | 1574 | |
252b5132 RH |
1575 | dynobj = elf_hash_table (info)->dynobj; |
1576 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1577 | sym_hashes = elf_sym_hashes (input_bfd); | |
1578 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1579 | ||
1580 | sgot = NULL; | |
1581 | splt = NULL; | |
1582 | sreloc = NULL; | |
1583 | ||
1584 | rel = relocs; | |
1585 | relend = relocs + input_section->reloc_count; | |
1586 | for (; rel < relend; rel++) | |
1587 | { | |
1588 | int r_type; | |
1589 | reloc_howto_type *howto; | |
1590 | unsigned long r_symndx; | |
1591 | struct elf_link_hash_entry *h; | |
1592 | Elf_Internal_Sym *sym; | |
1593 | asection *sec; | |
1594 | bfd_vma relocation; | |
44f745a6 | 1595 | bfd_boolean unresolved_reloc; |
252b5132 RH |
1596 | bfd_reloc_status_type r; |
1597 | ||
1598 | r_type = ELF32_R_TYPE (rel->r_info); | |
1599 | if (r_type < 0 || r_type >= (int) R_68K_max) | |
1600 | { | |
1601 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1602 | return FALSE; |
252b5132 RH |
1603 | } |
1604 | howto = howto_table + r_type; | |
1605 | ||
1606 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1607 | ||
252b5132 RH |
1608 | h = NULL; |
1609 | sym = NULL; | |
1610 | sec = NULL; | |
44f745a6 | 1611 | unresolved_reloc = FALSE; |
560e09e9 | 1612 | |
252b5132 RH |
1613 | if (r_symndx < symtab_hdr->sh_info) |
1614 | { | |
1615 | sym = local_syms + r_symndx; | |
1616 | sec = local_sections[r_symndx]; | |
8517fae7 | 1617 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
1618 | } |
1619 | else | |
1620 | { | |
560e09e9 NC |
1621 | bfd_boolean warned; |
1622 | ||
b2a8e766 AM |
1623 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1624 | r_symndx, symtab_hdr, sym_hashes, | |
1625 | h, sec, relocation, | |
1626 | unresolved_reloc, warned); | |
252b5132 RH |
1627 | } |
1628 | ||
1629 | switch (r_type) | |
1630 | { | |
1631 | case R_68K_GOT8: | |
1632 | case R_68K_GOT16: | |
1633 | case R_68K_GOT32: | |
1634 | /* Relocation is to the address of the entry for this symbol | |
1635 | in the global offset table. */ | |
1636 | if (h != NULL | |
1637 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1638 | break; | |
1639 | /* Fall through. */ | |
1640 | case R_68K_GOT8O: | |
1641 | case R_68K_GOT16O: | |
1642 | case R_68K_GOT32O: | |
1643 | /* Relocation is the offset of the entry for this symbol in | |
1644 | the global offset table. */ | |
1645 | ||
1646 | { | |
1647 | bfd_vma off; | |
1648 | ||
1649 | if (sgot == NULL) | |
1650 | { | |
1651 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1652 | BFD_ASSERT (sgot != NULL); | |
1653 | } | |
1654 | ||
1655 | if (h != NULL) | |
1656 | { | |
a5ad465a AS |
1657 | bfd_boolean dyn; |
1658 | ||
252b5132 RH |
1659 | off = h->got.offset; |
1660 | BFD_ASSERT (off != (bfd_vma) -1); | |
1661 | ||
a5ad465a AS |
1662 | dyn = elf_hash_table (info)->dynamic_sections_created; |
1663 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
252b5132 | 1664 | || (info->shared |
a5ad465a AS |
1665 | && (info->symbolic |
1666 | || h->dynindx == -1 | |
f5385ebf AM |
1667 | || h->forced_local) |
1668 | && h->def_regular)) | |
252b5132 RH |
1669 | { |
1670 | /* This is actually a static link, or it is a | |
1671 | -Bsymbolic link and the symbol is defined | |
1672 | locally, or the symbol was forced to be local | |
1673 | because of a version file.. We must initialize | |
1674 | this entry in the global offset table. Since | |
1675 | the offset must always be a multiple of 4, we | |
1676 | use the least significant bit to record whether | |
1677 | we have initialized it already. | |
1678 | ||
1679 | When doing a dynamic link, we create a .rela.got | |
1680 | relocation entry to initialize the value. This | |
1681 | is done in the finish_dynamic_symbol routine. */ | |
1682 | if ((off & 1) != 0) | |
1683 | off &= ~1; | |
1684 | else | |
1685 | { | |
1686 | bfd_put_32 (output_bfd, relocation, | |
1687 | sgot->contents + off); | |
1688 | h->got.offset |= 1; | |
1689 | } | |
1690 | } | |
44f745a6 AS |
1691 | else |
1692 | unresolved_reloc = FALSE; | |
252b5132 RH |
1693 | } |
1694 | else | |
1695 | { | |
1696 | BFD_ASSERT (local_got_offsets != NULL | |
1697 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1698 | ||
1699 | off = local_got_offsets[r_symndx]; | |
1700 | ||
1701 | /* The offset must always be a multiple of 4. We use | |
1702 | the least significant bit to record whether we have | |
1703 | already generated the necessary reloc. */ | |
1704 | if ((off & 1) != 0) | |
1705 | off &= ~1; | |
1706 | else | |
1707 | { | |
1708 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1709 | ||
1710 | if (info->shared) | |
1711 | { | |
947216bf | 1712 | asection *s; |
252b5132 | 1713 | Elf_Internal_Rela outrel; |
947216bf | 1714 | bfd_byte *loc; |
252b5132 | 1715 | |
947216bf AM |
1716 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
1717 | BFD_ASSERT (s != NULL); | |
252b5132 RH |
1718 | |
1719 | outrel.r_offset = (sgot->output_section->vma | |
1720 | + sgot->output_offset | |
1721 | + off); | |
1722 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
1723 | outrel.r_addend = relocation; | |
947216bf AM |
1724 | loc = s->contents; |
1725 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1726 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1727 | } |
1728 | ||
1729 | local_got_offsets[r_symndx] |= 1; | |
1730 | } | |
1731 | } | |
1732 | ||
1733 | relocation = sgot->output_offset + off; | |
1734 | if (r_type == R_68K_GOT8O | |
1735 | || r_type == R_68K_GOT16O | |
1736 | || r_type == R_68K_GOT32O) | |
1737 | { | |
1738 | /* This relocation does not use the addend. */ | |
1739 | rel->r_addend = 0; | |
1740 | } | |
1741 | else | |
1742 | relocation += sgot->output_section->vma; | |
1743 | } | |
1744 | break; | |
1745 | ||
1746 | case R_68K_PLT8: | |
1747 | case R_68K_PLT16: | |
1748 | case R_68K_PLT32: | |
1749 | /* Relocation is to the entry for this symbol in the | |
1750 | procedure linkage table. */ | |
1751 | ||
1752 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1753 | without using the procedure linkage table. */ | |
1754 | if (h == NULL) | |
1755 | break; | |
1756 | ||
1757 | if (h->plt.offset == (bfd_vma) -1 | |
1758 | || !elf_hash_table (info)->dynamic_sections_created) | |
1759 | { | |
1760 | /* We didn't make a PLT entry for this symbol. This | |
1761 | happens when statically linking PIC code, or when | |
1762 | using -Bsymbolic. */ | |
1763 | break; | |
1764 | } | |
1765 | ||
1766 | if (splt == NULL) | |
1767 | { | |
1768 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1769 | BFD_ASSERT (splt != NULL); | |
1770 | } | |
1771 | ||
1772 | relocation = (splt->output_section->vma | |
1773 | + splt->output_offset | |
1774 | + h->plt.offset); | |
44f745a6 | 1775 | unresolved_reloc = FALSE; |
252b5132 RH |
1776 | break; |
1777 | ||
1778 | case R_68K_PLT8O: | |
1779 | case R_68K_PLT16O: | |
1780 | case R_68K_PLT32O: | |
1781 | /* Relocation is the offset of the entry for this symbol in | |
1782 | the procedure linkage table. */ | |
1783 | BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1); | |
1784 | ||
1785 | if (splt == NULL) | |
1786 | { | |
1787 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1788 | BFD_ASSERT (splt != NULL); | |
1789 | } | |
1790 | ||
1791 | relocation = h->plt.offset; | |
44f745a6 | 1792 | unresolved_reloc = FALSE; |
252b5132 RH |
1793 | |
1794 | /* This relocation does not use the addend. */ | |
1795 | rel->r_addend = 0; | |
1796 | ||
1797 | break; | |
1798 | ||
1799 | case R_68K_PC8: | |
1800 | case R_68K_PC16: | |
1801 | case R_68K_PC32: | |
b6152c34 AS |
1802 | if (h == NULL |
1803 | || (info->shared | |
f5385ebf | 1804 | && h->forced_local)) |
252b5132 RH |
1805 | break; |
1806 | /* Fall through. */ | |
1807 | case R_68K_8: | |
1808 | case R_68K_16: | |
1809 | case R_68K_32: | |
1810 | if (info->shared | |
ec338859 | 1811 | && r_symndx != 0 |
252b5132 | 1812 | && (input_section->flags & SEC_ALLOC) != 0 |
d2ff124f AS |
1813 | && (h == NULL |
1814 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1815 | || h->root.type != bfd_link_hash_undefweak) | |
252b5132 RH |
1816 | && ((r_type != R_68K_PC8 |
1817 | && r_type != R_68K_PC16 | |
1818 | && r_type != R_68K_PC32) | |
d2ff124f AS |
1819 | || (h != NULL |
1820 | && h->dynindx != -1 | |
1821 | && (!info->symbolic | |
f5385ebf | 1822 | || !h->def_regular)))) |
252b5132 RH |
1823 | { |
1824 | Elf_Internal_Rela outrel; | |
947216bf | 1825 | bfd_byte *loc; |
b34976b6 | 1826 | bfd_boolean skip, relocate; |
252b5132 RH |
1827 | |
1828 | /* When generating a shared object, these relocations | |
1829 | are copied into the output file to be resolved at run | |
1830 | time. */ | |
1831 | ||
b34976b6 AM |
1832 | skip = FALSE; |
1833 | relocate = FALSE; | |
252b5132 | 1834 | |
c629eae0 JJ |
1835 | outrel.r_offset = |
1836 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1837 | rel->r_offset); | |
1838 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1839 | skip = TRUE; |
0bb2d96a | 1840 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1841 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
1842 | outrel.r_offset += (input_section->output_section->vma |
1843 | + input_section->output_offset); | |
1844 | ||
1845 | if (skip) | |
0bb2d96a | 1846 | memset (&outrel, 0, sizeof outrel); |
252b5132 | 1847 | else if (h != NULL |
d2ff124f AS |
1848 | && h->dynindx != -1 |
1849 | && (r_type == R_68K_PC8 | |
1850 | || r_type == R_68K_PC16 | |
1851 | || r_type == R_68K_PC32 | |
1852 | || !info->shared | |
1853 | || !info->symbolic | |
f5385ebf | 1854 | || !h->def_regular)) |
252b5132 | 1855 | { |
252b5132 | 1856 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
d2ff124f | 1857 | outrel.r_addend = rel->r_addend; |
252b5132 RH |
1858 | } |
1859 | else | |
1860 | { | |
d2ff124f | 1861 | /* This symbol is local, or marked to become local. */ |
252b5132 RH |
1862 | if (r_type == R_68K_32) |
1863 | { | |
b34976b6 | 1864 | relocate = TRUE; |
252b5132 RH |
1865 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); |
1866 | outrel.r_addend = relocation + rel->r_addend; | |
1867 | } | |
1868 | else | |
1869 | { | |
1870 | long indx; | |
1871 | ||
8517fae7 | 1872 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
1873 | indx = 0; |
1874 | else if (sec == NULL || sec->owner == NULL) | |
1875 | { | |
1876 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1877 | return FALSE; |
252b5132 RH |
1878 | } |
1879 | else | |
1880 | { | |
1881 | asection *osec; | |
1882 | ||
1883 | osec = sec->output_section; | |
1884 | indx = elf_section_data (osec)->dynindx; | |
1885 | BFD_ASSERT (indx > 0); | |
1886 | } | |
1887 | ||
252b5132 RH |
1888 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
1889 | outrel.r_addend = relocation + rel->r_addend; | |
1890 | } | |
1891 | } | |
1892 | ||
d2ff124f AS |
1893 | sreloc = elf_section_data (input_section)->sreloc; |
1894 | if (sreloc == NULL) | |
1895 | abort (); | |
1896 | ||
947216bf AM |
1897 | loc = sreloc->contents; |
1898 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1899 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1900 | |
1901 | /* This reloc will be computed at runtime, so there's no | |
1902 | need to do anything now, except for R_68K_32 | |
1903 | relocations that have been turned into | |
1904 | R_68K_RELATIVE. */ | |
1905 | if (!relocate) | |
1906 | continue; | |
1907 | } | |
1908 | ||
1909 | break; | |
1910 | ||
1911 | case R_68K_GNU_VTINHERIT: | |
1912 | case R_68K_GNU_VTENTRY: | |
1913 | /* These are no-ops in the end. */ | |
1914 | continue; | |
1915 | ||
1916 | default: | |
1917 | break; | |
1918 | } | |
1919 | ||
44f745a6 AS |
1920 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
1921 | because such sections are not SEC_ALLOC and thus ld.so will | |
1922 | not process them. */ | |
1923 | if (unresolved_reloc | |
1924 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1925 | && h->def_dynamic)) |
44f745a6 AS |
1926 | { |
1927 | (*_bfd_error_handler) | |
843fe662 | 1928 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
1929 | input_bfd, |
1930 | input_section, | |
44f745a6 | 1931 | (long) rel->r_offset, |
843fe662 | 1932 | howto->name, |
44f745a6 AS |
1933 | h->root.root.string); |
1934 | return FALSE; | |
1935 | } | |
1936 | ||
252b5132 RH |
1937 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
1938 | contents, rel->r_offset, | |
1939 | relocation, rel->r_addend); | |
1940 | ||
1941 | if (r != bfd_reloc_ok) | |
1942 | { | |
44f745a6 AS |
1943 | const char *name; |
1944 | ||
1945 | if (h != NULL) | |
1946 | name = h->root.root.string; | |
1947 | else | |
252b5132 | 1948 | { |
44f745a6 AS |
1949 | name = bfd_elf_string_from_elf_section (input_bfd, |
1950 | symtab_hdr->sh_link, | |
1951 | sym->st_name); | |
1952 | if (name == NULL) | |
1953 | return FALSE; | |
1954 | if (*name == '\0') | |
1955 | name = bfd_section_name (input_bfd, sec); | |
1956 | } | |
252b5132 | 1957 | |
44f745a6 AS |
1958 | if (r == bfd_reloc_overflow) |
1959 | { | |
1960 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
1961 | (info, (h ? &h->root : NULL), name, howto->name, |
1962 | (bfd_vma) 0, input_bfd, input_section, | |
1963 | rel->r_offset))) | |
44f745a6 AS |
1964 | return FALSE; |
1965 | } | |
1966 | else | |
1967 | { | |
1968 | (*_bfd_error_handler) | |
d003868e AM |
1969 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
1970 | input_bfd, input_section, | |
44f745a6 AS |
1971 | (long) rel->r_offset, name, (int) r); |
1972 | return FALSE; | |
252b5132 RH |
1973 | } |
1974 | } | |
1975 | } | |
1976 | ||
b34976b6 | 1977 | return TRUE; |
252b5132 RH |
1978 | } |
1979 | ||
cc3e26be RS |
1980 | /* Install an M_68K_PC32 relocation against VALUE at offset OFFSET |
1981 | into section SEC. */ | |
1982 | ||
1983 | static void | |
1984 | elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value) | |
1985 | { | |
1986 | /* Make VALUE PC-relative. */ | |
1987 | value -= sec->output_section->vma + offset; | |
1988 | ||
1989 | /* Apply any in-place addend. */ | |
1990 | value += bfd_get_32 (sec->owner, sec->contents + offset); | |
1991 | ||
1992 | bfd_put_32 (sec->owner, value, sec->contents + offset); | |
1993 | } | |
1994 | ||
252b5132 RH |
1995 | /* Finish up dynamic symbol handling. We set the contents of various |
1996 | dynamic sections here. */ | |
1997 | ||
b34976b6 | 1998 | static bfd_boolean |
252b5132 RH |
1999 | elf_m68k_finish_dynamic_symbol (output_bfd, info, h, sym) |
2000 | bfd *output_bfd; | |
2001 | struct bfd_link_info *info; | |
2002 | struct elf_link_hash_entry *h; | |
2003 | Elf_Internal_Sym *sym; | |
2004 | { | |
2005 | bfd *dynobj; | |
2006 | ||
2007 | dynobj = elf_hash_table (info)->dynobj; | |
2008 | ||
2009 | if (h->plt.offset != (bfd_vma) -1) | |
2010 | { | |
cc3e26be | 2011 | const struct elf_m68k_plt_info *plt_info; |
252b5132 RH |
2012 | asection *splt; |
2013 | asection *sgot; | |
2014 | asection *srela; | |
2015 | bfd_vma plt_index; | |
2016 | bfd_vma got_offset; | |
2017 | Elf_Internal_Rela rela; | |
947216bf | 2018 | bfd_byte *loc; |
252b5132 RH |
2019 | |
2020 | /* This symbol has an entry in the procedure linkage table. Set | |
2021 | it up. */ | |
2022 | ||
2023 | BFD_ASSERT (h->dynindx != -1); | |
2024 | ||
cc3e26be | 2025 | plt_info = elf_m68k_hash_table (info)->plt_info; |
252b5132 RH |
2026 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
2027 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2028 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2029 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
2030 | ||
2031 | /* Get the index in the procedure linkage table which | |
2032 | corresponds to this symbol. This is the index of this symbol | |
2033 | in all the symbols for which we are making plt entries. The | |
2034 | first entry in the procedure linkage table is reserved. */ | |
cc3e26be | 2035 | plt_index = (h->plt.offset / plt_info->size) - 1; |
252b5132 RH |
2036 | |
2037 | /* Get the offset into the .got table of the entry that | |
2038 | corresponds to this function. Each .got entry is 4 bytes. | |
2039 | The first three are reserved. */ | |
2040 | got_offset = (plt_index + 3) * 4; | |
2041 | ||
cc3e26be RS |
2042 | memcpy (splt->contents + h->plt.offset, |
2043 | plt_info->symbol_entry, | |
2044 | plt_info->size); | |
2045 | ||
2046 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got, | |
2047 | (sgot->output_section->vma | |
2048 | + sgot->output_offset | |
2049 | + got_offset)); | |
252b5132 RH |
2050 | |
2051 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
cc3e26be RS |
2052 | splt->contents |
2053 | + h->plt.offset | |
2054 | + plt_info->symbol_resolve_entry + 2); | |
2055 | ||
2056 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt, | |
2057 | splt->output_section->vma); | |
252b5132 RH |
2058 | |
2059 | /* Fill in the entry in the global offset table. */ | |
2060 | bfd_put_32 (output_bfd, | |
2061 | (splt->output_section->vma | |
2062 | + splt->output_offset | |
2063 | + h->plt.offset | |
cc3e26be | 2064 | + plt_info->symbol_resolve_entry), |
252b5132 RH |
2065 | sgot->contents + got_offset); |
2066 | ||
2067 | /* Fill in the entry in the .rela.plt section. */ | |
2068 | rela.r_offset = (sgot->output_section->vma | |
2069 | + sgot->output_offset | |
2070 | + got_offset); | |
2071 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT); | |
2072 | rela.r_addend = 0; | |
947216bf AM |
2073 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
2074 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 | 2075 | |
f5385ebf | 2076 | if (!h->def_regular) |
252b5132 RH |
2077 | { |
2078 | /* Mark the symbol as undefined, rather than as defined in | |
2079 | the .plt section. Leave the value alone. */ | |
2080 | sym->st_shndx = SHN_UNDEF; | |
2081 | } | |
2082 | } | |
2083 | ||
2084 | if (h->got.offset != (bfd_vma) -1) | |
2085 | { | |
2086 | asection *sgot; | |
2087 | asection *srela; | |
2088 | Elf_Internal_Rela rela; | |
947216bf | 2089 | bfd_byte *loc; |
252b5132 RH |
2090 | |
2091 | /* This symbol has an entry in the global offset table. Set it | |
2092 | up. */ | |
2093 | ||
2094 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2095 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2096 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
2097 | ||
2098 | rela.r_offset = (sgot->output_section->vma | |
2099 | + sgot->output_offset | |
dc810e39 | 2100 | + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
2101 | |
2102 | /* If this is a -Bsymbolic link, and the symbol is defined | |
2103 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
2104 | the symbol was forced to be local because of a version file. | |
2105 | The entry in the global offset table will already have been | |
2106 | initialized in the relocate_section function. */ | |
2107 | if (info->shared | |
a5ad465a AS |
2108 | && (info->symbolic |
2109 | || h->dynindx == -1 | |
f5385ebf AM |
2110 | || h->forced_local) |
2111 | && h->def_regular) | |
252b5132 RH |
2112 | { |
2113 | rela.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
2114 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
2115 | (sgot->contents | |
dc810e39 | 2116 | + (h->got.offset &~ (bfd_vma) 1))); |
252b5132 RH |
2117 | } |
2118 | else | |
2119 | { | |
2120 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
dc810e39 | 2121 | sgot->contents + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
2122 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT); |
2123 | rela.r_addend = 0; | |
2124 | } | |
2125 | ||
947216bf AM |
2126 | loc = srela->contents; |
2127 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
2128 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
2129 | } |
2130 | ||
f5385ebf | 2131 | if (h->needs_copy) |
252b5132 RH |
2132 | { |
2133 | asection *s; | |
2134 | Elf_Internal_Rela rela; | |
947216bf | 2135 | bfd_byte *loc; |
252b5132 RH |
2136 | |
2137 | /* This symbol needs a copy reloc. Set it up. */ | |
2138 | ||
2139 | BFD_ASSERT (h->dynindx != -1 | |
2140 | && (h->root.type == bfd_link_hash_defined | |
2141 | || h->root.type == bfd_link_hash_defweak)); | |
2142 | ||
2143 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
2144 | ".rela.bss"); | |
2145 | BFD_ASSERT (s != NULL); | |
2146 | ||
2147 | rela.r_offset = (h->root.u.def.value | |
2148 | + h->root.u.def.section->output_section->vma | |
2149 | + h->root.u.def.section->output_offset); | |
2150 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY); | |
2151 | rela.r_addend = 0; | |
947216bf AM |
2152 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
2153 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
2154 | } |
2155 | ||
2156 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
2157 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 | 2158 | || h == elf_hash_table (info)->hgot) |
252b5132 RH |
2159 | sym->st_shndx = SHN_ABS; |
2160 | ||
b34976b6 | 2161 | return TRUE; |
252b5132 RH |
2162 | } |
2163 | ||
2164 | /* Finish up the dynamic sections. */ | |
2165 | ||
b34976b6 | 2166 | static bfd_boolean |
252b5132 RH |
2167 | elf_m68k_finish_dynamic_sections (output_bfd, info) |
2168 | bfd *output_bfd; | |
2169 | struct bfd_link_info *info; | |
2170 | { | |
2171 | bfd *dynobj; | |
2172 | asection *sgot; | |
2173 | asection *sdyn; | |
2174 | ||
2175 | dynobj = elf_hash_table (info)->dynobj; | |
2176 | ||
2177 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2178 | BFD_ASSERT (sgot != NULL); | |
2179 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2180 | ||
2181 | if (elf_hash_table (info)->dynamic_sections_created) | |
2182 | { | |
2183 | asection *splt; | |
2184 | Elf32_External_Dyn *dyncon, *dynconend; | |
2185 | ||
2186 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2187 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2188 | ||
2189 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 2190 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
2191 | for (; dyncon < dynconend; dyncon++) |
2192 | { | |
2193 | Elf_Internal_Dyn dyn; | |
2194 | const char *name; | |
2195 | asection *s; | |
2196 | ||
2197 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2198 | ||
2199 | switch (dyn.d_tag) | |
2200 | { | |
2201 | default: | |
2202 | break; | |
2203 | ||
2204 | case DT_PLTGOT: | |
2205 | name = ".got"; | |
2206 | goto get_vma; | |
2207 | case DT_JMPREL: | |
2208 | name = ".rela.plt"; | |
2209 | get_vma: | |
2210 | s = bfd_get_section_by_name (output_bfd, name); | |
2211 | BFD_ASSERT (s != NULL); | |
2212 | dyn.d_un.d_ptr = s->vma; | |
2213 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2214 | break; | |
2215 | ||
2216 | case DT_PLTRELSZ: | |
2217 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2218 | BFD_ASSERT (s != NULL); | |
eea6121a | 2219 | dyn.d_un.d_val = s->size; |
252b5132 RH |
2220 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2221 | break; | |
2222 | ||
2223 | case DT_RELASZ: | |
2224 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2225 | not be included in the overall relocs (DT_RELA). | |
2226 | Therefore, we override the DT_RELASZ entry here to | |
2227 | make it not include the JMPREL relocs. Since the | |
2228 | linker script arranges for .rela.plt to follow all | |
2229 | other relocation sections, we don't have to worry | |
2230 | about changing the DT_RELA entry. */ | |
2231 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2232 | if (s != NULL) | |
eea6121a | 2233 | dyn.d_un.d_val -= s->size; |
252b5132 RH |
2234 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2235 | break; | |
2236 | } | |
2237 | } | |
2238 | ||
2239 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2240 | if (splt->size > 0) |
252b5132 | 2241 | { |
cc3e26be RS |
2242 | const struct elf_m68k_plt_info *plt_info; |
2243 | ||
2244 | plt_info = elf_m68k_hash_table (info)->plt_info; | |
2245 | memcpy (splt->contents, plt_info->plt0_entry, plt_info->size); | |
2246 | ||
2247 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4, | |
2248 | (sgot->output_section->vma | |
2249 | + sgot->output_offset | |
2250 | + 4)); | |
2251 | ||
2252 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8, | |
2253 | (sgot->output_section->vma | |
2254 | + sgot->output_offset | |
2255 | + 8)); | |
2256 | ||
2257 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
2258 | = plt_info->size; | |
252b5132 | 2259 | } |
252b5132 RH |
2260 | } |
2261 | ||
2262 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2263 | if (sgot->size > 0) |
252b5132 RH |
2264 | { |
2265 | if (sdyn == NULL) | |
2266 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2267 | else | |
2268 | bfd_put_32 (output_bfd, | |
2269 | sdyn->output_section->vma + sdyn->output_offset, | |
2270 | sgot->contents); | |
2271 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2272 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2273 | } | |
2274 | ||
2275 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2276 | ||
b34976b6 | 2277 | return TRUE; |
252b5132 RH |
2278 | } |
2279 | ||
0752970e NC |
2280 | /* Given a .data section and a .emreloc in-memory section, store |
2281 | relocation information into the .emreloc section which can be | |
2282 | used at runtime to relocate the section. This is called by the | |
2283 | linker when the --embedded-relocs switch is used. This is called | |
2284 | after the add_symbols entry point has been called for all the | |
2285 | objects, and before the final_link entry point is called. */ | |
2286 | ||
b34976b6 | 2287 | bfd_boolean |
0752970e NC |
2288 | bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) |
2289 | bfd *abfd; | |
2290 | struct bfd_link_info *info; | |
2291 | asection *datasec; | |
2292 | asection *relsec; | |
2293 | char **errmsg; | |
2294 | { | |
2295 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc AM |
2296 | Elf_Internal_Sym *isymbuf = NULL; |
2297 | Elf_Internal_Rela *internal_relocs = NULL; | |
0752970e NC |
2298 | Elf_Internal_Rela *irel, *irelend; |
2299 | bfd_byte *p; | |
dc810e39 | 2300 | bfd_size_type amt; |
0752970e | 2301 | |
1049f94e | 2302 | BFD_ASSERT (! info->relocatable); |
0752970e NC |
2303 | |
2304 | *errmsg = NULL; | |
2305 | ||
2306 | if (datasec->reloc_count == 0) | |
b34976b6 | 2307 | return TRUE; |
0752970e NC |
2308 | |
2309 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
9ad5cbcf | 2310 | |
0752970e | 2311 | /* Get a copy of the native relocations. */ |
45d6a902 | 2312 | internal_relocs = (_bfd_elf_link_read_relocs |
0752970e NC |
2313 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
2314 | info->keep_memory)); | |
2315 | if (internal_relocs == NULL) | |
2316 | goto error_return; | |
0752970e | 2317 | |
dc810e39 AM |
2318 | amt = (bfd_size_type) datasec->reloc_count * 12; |
2319 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
0752970e NC |
2320 | if (relsec->contents == NULL) |
2321 | goto error_return; | |
2322 | ||
2323 | p = relsec->contents; | |
2324 | ||
2325 | irelend = internal_relocs + datasec->reloc_count; | |
2326 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
2327 | { | |
2328 | asection *targetsec; | |
2329 | ||
2330 | /* We are going to write a four byte longword into the runtime | |
2331 | reloc section. The longword will be the address in the data | |
2332 | section which must be relocated. It is followed by the name | |
2333 | of the target section NUL-padded or truncated to 8 | |
2334 | characters. */ | |
2335 | ||
2336 | /* We can only relocate absolute longword relocs at run time. */ | |
2337 | if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32) | |
2338 | { | |
2339 | *errmsg = _("unsupported reloc type"); | |
2340 | bfd_set_error (bfd_error_bad_value); | |
2341 | goto error_return; | |
2342 | } | |
2343 | ||
2344 | /* Get the target section referred to by the reloc. */ | |
2345 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2346 | { | |
0752970e | 2347 | /* A local symbol. */ |
6cdc0ccc AM |
2348 | Elf_Internal_Sym *isym; |
2349 | ||
2350 | /* Read this BFD's local symbols if we haven't done so already. */ | |
2351 | if (isymbuf == NULL) | |
2352 | { | |
2353 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2354 | if (isymbuf == NULL) | |
2355 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2356 | symtab_hdr->sh_info, 0, | |
2357 | NULL, NULL, NULL); | |
2358 | if (isymbuf == NULL) | |
2359 | goto error_return; | |
2360 | } | |
0752970e | 2361 | |
6cdc0ccc AM |
2362 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
2363 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
0752970e NC |
2364 | } |
2365 | else | |
2366 | { | |
2367 | unsigned long indx; | |
2368 | struct elf_link_hash_entry *h; | |
2369 | ||
2370 | /* An external symbol. */ | |
2371 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2372 | h = elf_sym_hashes (abfd)[indx]; | |
2373 | BFD_ASSERT (h != NULL); | |
2374 | if (h->root.type == bfd_link_hash_defined | |
2375 | || h->root.type == bfd_link_hash_defweak) | |
2376 | targetsec = h->root.u.def.section; | |
2377 | else | |
2378 | targetsec = NULL; | |
2379 | } | |
2380 | ||
2381 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
2382 | memset (p + 4, 0, 8); | |
2383 | if (targetsec != NULL) | |
f075ee0c | 2384 | strncpy ((char *) p + 4, targetsec->output_section->name, 8); |
0752970e | 2385 | } |
c3668558 | 2386 | |
6cdc0ccc AM |
2387 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
2388 | free (isymbuf); | |
2389 | if (internal_relocs != NULL | |
2390 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2391 | free (internal_relocs); | |
b34976b6 | 2392 | return TRUE; |
0752970e NC |
2393 | |
2394 | error_return: | |
6cdc0ccc AM |
2395 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
2396 | free (isymbuf); | |
2397 | if (internal_relocs != NULL | |
2398 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2399 | free (internal_relocs); | |
b34976b6 | 2400 | return FALSE; |
0752970e NC |
2401 | } |
2402 | ||
aa91b392 | 2403 | static enum elf_reloc_type_class |
f51e552e AM |
2404 | elf32_m68k_reloc_type_class (rela) |
2405 | const Elf_Internal_Rela *rela; | |
aa91b392 | 2406 | { |
f51e552e | 2407 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
aa91b392 AS |
2408 | { |
2409 | case R_68K_RELATIVE: | |
2410 | return reloc_class_relative; | |
2411 | case R_68K_JMP_SLOT: | |
2412 | return reloc_class_plt; | |
2413 | case R_68K_COPY: | |
2414 | return reloc_class_copy; | |
2415 | default: | |
2416 | return reloc_class_normal; | |
2417 | } | |
2418 | } | |
2419 | ||
1715e0e3 AS |
2420 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
2421 | or (bfd_vma) -1 if it should not be included. */ | |
2422 | ||
2423 | static bfd_vma | |
2424 | elf_m68k_plt_sym_val (bfd_vma i, const asection *plt, | |
2425 | const arelent *rel ATTRIBUTE_UNUSED) | |
2426 | { | |
cc3e26be | 2427 | return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size; |
1715e0e3 AS |
2428 | } |
2429 | ||
252b5132 RH |
2430 | #define TARGET_BIG_SYM bfd_elf32_m68k_vec |
2431 | #define TARGET_BIG_NAME "elf32-m68k" | |
2432 | #define ELF_MACHINE_CODE EM_68K | |
2433 | #define ELF_MAXPAGESIZE 0x2000 | |
2434 | #define elf_backend_create_dynamic_sections \ | |
2435 | _bfd_elf_create_dynamic_sections | |
2436 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2437 | elf_m68k_link_hash_table_create | |
c152c796 | 2438 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
252b5132 RH |
2439 | |
2440 | #define elf_backend_check_relocs elf_m68k_check_relocs | |
cc3e26be RS |
2441 | #define elf_backend_always_size_sections \ |
2442 | elf_m68k_always_size_sections | |
252b5132 RH |
2443 | #define elf_backend_adjust_dynamic_symbol \ |
2444 | elf_m68k_adjust_dynamic_symbol | |
2445 | #define elf_backend_size_dynamic_sections \ | |
2446 | elf_m68k_size_dynamic_sections | |
2447 | #define elf_backend_relocate_section elf_m68k_relocate_section | |
2448 | #define elf_backend_finish_dynamic_symbol \ | |
2449 | elf_m68k_finish_dynamic_symbol | |
2450 | #define elf_backend_finish_dynamic_sections \ | |
2451 | elf_m68k_finish_dynamic_sections | |
2452 | #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook | |
2453 | #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook | |
9e1281c7 CM |
2454 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
2455 | elf32_m68k_merge_private_bfd_data | |
2456 | #define bfd_elf32_bfd_set_private_flags \ | |
2457 | elf32_m68k_set_private_flags | |
2458 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2459 | elf32_m68k_print_private_bfd_data | |
aa91b392 | 2460 | #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class |
1715e0e3 | 2461 | #define elf_backend_plt_sym_val elf_m68k_plt_sym_val |
266abb8f | 2462 | #define elf_backend_object_p elf32_m68k_object_p |
9e1281c7 | 2463 | |
252b5132 | 2464 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 2465 | #define elf_backend_can_refcount 1 |
252b5132 RH |
2466 | #define elf_backend_want_got_plt 1 |
2467 | #define elf_backend_plt_readonly 1 | |
2468 | #define elf_backend_want_plt_sym 0 | |
2469 | #define elf_backend_got_header_size 12 | |
b491616a | 2470 | #define elf_backend_rela_normal 1 |
252b5132 RH |
2471 | |
2472 | #include "elf32-target.h" |