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 *)); | |
b34976b6 | 40 | static bfd_boolean elf_m68k_adjust_dynamic_symbol |
252b5132 | 41 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 42 | static bfd_boolean elf_m68k_size_dynamic_sections |
252b5132 | 43 | PARAMS ((bfd *, struct bfd_link_info *)); |
0cca5f05 AS |
44 | static bfd_boolean elf_m68k_discard_copies |
45 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
b34976b6 | 46 | static bfd_boolean elf_m68k_relocate_section |
252b5132 RH |
47 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
48 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 | 49 | static bfd_boolean elf_m68k_finish_dynamic_symbol |
252b5132 RH |
50 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
51 | Elf_Internal_Sym *)); | |
b34976b6 | 52 | static bfd_boolean elf_m68k_finish_dynamic_sections |
252b5132 RH |
53 | PARAMS ((bfd *, struct bfd_link_info *)); |
54 | ||
b34976b6 | 55 | static bfd_boolean elf32_m68k_set_private_flags |
9e1281c7 | 56 | PARAMS ((bfd *, flagword)); |
b34976b6 | 57 | static bfd_boolean elf32_m68k_merge_private_bfd_data |
9e1281c7 | 58 | PARAMS ((bfd *, bfd *)); |
b34976b6 | 59 | static bfd_boolean elf32_m68k_print_private_bfd_data |
9e1281c7 | 60 | PARAMS ((bfd *, PTR)); |
aa91b392 | 61 | static enum elf_reloc_type_class elf32_m68k_reloc_type_class |
f51e552e | 62 | PARAMS ((const Elf_Internal_Rela *)); |
9e1281c7 | 63 | |
252b5132 | 64 | static reloc_howto_type howto_table[] = { |
b34976b6 AM |
65 | HOWTO(R_68K_NONE, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", FALSE, 0, 0x00000000,FALSE), |
66 | HOWTO(R_68K_32, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", FALSE, 0, 0xffffffff,FALSE), | |
67 | HOWTO(R_68K_16, 0, 1,16, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", FALSE, 0, 0x0000ffff,FALSE), | |
68 | HOWTO(R_68K_8, 0, 0, 8, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", FALSE, 0, 0x000000ff,FALSE), | |
69 | HOWTO(R_68K_PC32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PC32", FALSE, 0, 0xffffffff,TRUE), | |
70 | HOWTO(R_68K_PC16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", FALSE, 0, 0x0000ffff,TRUE), | |
71 | HOWTO(R_68K_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", FALSE, 0, 0x000000ff,TRUE), | |
72 | HOWTO(R_68K_GOT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32", FALSE, 0, 0xffffffff,TRUE), | |
73 | HOWTO(R_68K_GOT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", FALSE, 0, 0x0000ffff,TRUE), | |
74 | HOWTO(R_68K_GOT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", FALSE, 0, 0x000000ff,TRUE), | |
75 | HOWTO(R_68K_GOT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32O", FALSE, 0, 0xffffffff,FALSE), | |
76 | HOWTO(R_68K_GOT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", FALSE, 0, 0x0000ffff,FALSE), | |
77 | HOWTO(R_68K_GOT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", FALSE, 0, 0x000000ff,FALSE), | |
78 | HOWTO(R_68K_PLT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32", FALSE, 0, 0xffffffff,TRUE), | |
79 | HOWTO(R_68K_PLT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", FALSE, 0, 0x0000ffff,TRUE), | |
80 | HOWTO(R_68K_PLT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", FALSE, 0, 0x000000ff,TRUE), | |
81 | HOWTO(R_68K_PLT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32O", FALSE, 0, 0xffffffff,FALSE), | |
82 | HOWTO(R_68K_PLT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", FALSE, 0, 0x0000ffff,FALSE), | |
83 | HOWTO(R_68K_PLT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", FALSE, 0, 0x000000ff,FALSE), | |
84 | HOWTO(R_68K_COPY, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", FALSE, 0, 0xffffffff,FALSE), | |
85 | 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), | |
86 | 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), | |
87 | HOWTO(R_68K_RELATIVE, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_RELATIVE", FALSE, 0, 0xffffffff,FALSE), | |
ae9a127f | 88 | /* GNU extension to record C++ vtable hierarchy. */ |
252b5132 RH |
89 | HOWTO (R_68K_GNU_VTINHERIT, /* type */ |
90 | 0, /* rightshift */ | |
91 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
92 | 0, /* bitsize */ | |
b34976b6 | 93 | FALSE, /* pc_relative */ |
252b5132 RH |
94 | 0, /* bitpos */ |
95 | complain_overflow_dont, /* complain_on_overflow */ | |
96 | NULL, /* special_function */ | |
97 | "R_68K_GNU_VTINHERIT", /* name */ | |
b34976b6 | 98 | FALSE, /* partial_inplace */ |
252b5132 RH |
99 | 0, /* src_mask */ |
100 | 0, /* dst_mask */ | |
b34976b6 | 101 | FALSE), |
ae9a127f | 102 | /* GNU extension to record C++ vtable member usage. */ |
252b5132 RH |
103 | HOWTO (R_68K_GNU_VTENTRY, /* type */ |
104 | 0, /* rightshift */ | |
105 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
106 | 0, /* bitsize */ | |
b34976b6 | 107 | FALSE, /* pc_relative */ |
252b5132 RH |
108 | 0, /* bitpos */ |
109 | complain_overflow_dont, /* complain_on_overflow */ | |
110 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
111 | "R_68K_GNU_VTENTRY", /* name */ | |
b34976b6 | 112 | FALSE, /* partial_inplace */ |
252b5132 RH |
113 | 0, /* src_mask */ |
114 | 0, /* dst_mask */ | |
b34976b6 | 115 | FALSE), |
252b5132 RH |
116 | }; |
117 | ||
118 | static void | |
119 | rtype_to_howto (abfd, cache_ptr, dst) | |
121089cb | 120 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
121 | arelent *cache_ptr; |
122 | Elf_Internal_Rela *dst; | |
123 | { | |
124 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_68K_max); | |
125 | cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)]; | |
126 | } | |
127 | ||
128 | #define elf_info_to_howto rtype_to_howto | |
129 | ||
130 | static const struct | |
131 | { | |
132 | bfd_reloc_code_real_type bfd_val; | |
133 | int elf_val; | |
134 | } reloc_map[] = { | |
135 | { BFD_RELOC_NONE, R_68K_NONE }, | |
136 | { BFD_RELOC_32, R_68K_32 }, | |
137 | { BFD_RELOC_16, R_68K_16 }, | |
138 | { BFD_RELOC_8, R_68K_8 }, | |
139 | { BFD_RELOC_32_PCREL, R_68K_PC32 }, | |
140 | { BFD_RELOC_16_PCREL, R_68K_PC16 }, | |
141 | { BFD_RELOC_8_PCREL, R_68K_PC8 }, | |
142 | { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 }, | |
143 | { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 }, | |
144 | { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 }, | |
145 | { BFD_RELOC_32_GOTOFF, R_68K_GOT32O }, | |
146 | { BFD_RELOC_16_GOTOFF, R_68K_GOT16O }, | |
147 | { BFD_RELOC_8_GOTOFF, R_68K_GOT8O }, | |
148 | { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 }, | |
149 | { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 }, | |
150 | { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 }, | |
151 | { BFD_RELOC_32_PLTOFF, R_68K_PLT32O }, | |
152 | { BFD_RELOC_16_PLTOFF, R_68K_PLT16O }, | |
153 | { BFD_RELOC_8_PLTOFF, R_68K_PLT8O }, | |
154 | { BFD_RELOC_NONE, R_68K_COPY }, | |
155 | { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT }, | |
156 | { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT }, | |
157 | { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE }, | |
158 | { BFD_RELOC_CTOR, R_68K_32 }, | |
159 | { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT }, | |
160 | { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY }, | |
161 | }; | |
162 | ||
163 | static reloc_howto_type * | |
164 | reloc_type_lookup (abfd, code) | |
121089cb | 165 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
166 | bfd_reloc_code_real_type code; |
167 | { | |
168 | unsigned int i; | |
169 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
170 | { | |
171 | if (reloc_map[i].bfd_val == code) | |
172 | return &howto_table[reloc_map[i].elf_val]; | |
173 | } | |
174 | return 0; | |
175 | } | |
176 | ||
177 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup | |
178 | #define ELF_ARCH bfd_arch_m68k | |
252b5132 RH |
179 | \f |
180 | /* Functions for the m68k ELF linker. */ | |
181 | ||
182 | /* The name of the dynamic interpreter. This is put in the .interp | |
183 | section. */ | |
184 | ||
185 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
186 | ||
cc3e26be RS |
187 | /* Describes one of the various PLT styles. */ |
188 | ||
189 | struct elf_m68k_plt_info | |
190 | { | |
191 | /* The size of each PLT entry. */ | |
192 | bfd_vma size; | |
193 | ||
194 | /* The template for the first PLT entry. */ | |
195 | const bfd_byte *plt0_entry; | |
196 | ||
197 | /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations. | |
198 | The comments by each member indicate the value that the relocation | |
199 | is against. */ | |
200 | struct { | |
201 | unsigned int got4; /* .got + 4 */ | |
202 | unsigned int got8; /* .got + 8 */ | |
203 | } plt0_relocs; | |
204 | ||
205 | /* The template for a symbol's PLT entry. */ | |
206 | const bfd_byte *symbol_entry; | |
207 | ||
208 | /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations. | |
209 | The comments by each member indicate the value that the relocation | |
210 | is against. */ | |
211 | struct { | |
212 | unsigned int got; /* the symbol's .got.plt entry */ | |
213 | unsigned int plt; /* .plt */ | |
214 | } symbol_relocs; | |
215 | ||
216 | /* The offset of the resolver stub from the start of SYMBOL_ENTRY. | |
217 | The stub starts with "move.l #relocoffset,%d0". */ | |
218 | bfd_vma symbol_resolve_entry; | |
219 | }; | |
220 | ||
252b5132 RH |
221 | /* The size in bytes of an entry in the procedure linkage table. */ |
222 | ||
223 | #define PLT_ENTRY_SIZE 20 | |
224 | ||
225 | /* The first entry in a procedure linkage table looks like this. See | |
226 | the SVR4 ABI m68k supplement to see how this works. */ | |
227 | ||
228 | static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] = | |
229 | { | |
230 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ | |
cc3e26be | 231 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
252b5132 | 232 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */ |
cc3e26be | 233 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
252b5132 RH |
234 | 0, 0, 0, 0 /* pad out to 20 bytes. */ |
235 | }; | |
236 | ||
237 | /* Subsequent entries in a procedure linkage table look like this. */ | |
238 | ||
239 | static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] = | |
240 | { | |
241 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */ | |
cc3e26be | 242 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
252b5132 | 243 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
cc3e26be | 244 | 0, 0, 0, 0, /* + reloc index */ |
252b5132 | 245 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 246 | 0, 0, 0, 0 /* + .plt - . */ |
252b5132 RH |
247 | }; |
248 | ||
cc3e26be RS |
249 | static const struct elf_m68k_plt_info elf_m68k_plt_info = { |
250 | PLT_ENTRY_SIZE, | |
251 | elf_m68k_plt0_entry, { 4, 12 }, | |
252 | elf_m68k_plt_entry, { 4, 16 }, 8 | |
253 | }; | |
238d258f | 254 | |
cc3e26be | 255 | #define ISAB_PLT_ENTRY_SIZE 24 |
238d258f | 256 | |
cc3e26be | 257 | static const bfd_byte elf_isab_plt0_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 258 | { |
cc3e26be RS |
259 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
260 | 0, 0, 0, 0, /* + (.got + 4) - . */ | |
261 | 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */ | |
262 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
263 | 0, 0, 0, 0, /* + (.got + 8) - . */ | |
264 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
238d258f NC |
265 | 0x4e, 0xd0, /* jmp (%a0) */ |
266 | 0x4e, 0x71 /* nop */ | |
267 | }; | |
268 | ||
269 | /* Subsequent entries in a procedure linkage table look like this. */ | |
270 | ||
cc3e26be | 271 | static const bfd_byte elf_isab_plt_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 272 | { |
cc3e26be RS |
273 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
274 | 0, 0, 0, 0, /* + (.got.plt entry) - . */ | |
275 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
238d258f NC |
276 | 0x4e, 0xd0, /* jmp (%a0) */ |
277 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
cc3e26be | 278 | 0, 0, 0, 0, /* + reloc index */ |
238d258f | 279 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 280 | 0, 0, 0, 0 /* + .plt - . */ |
238d258f NC |
281 | }; |
282 | ||
cc3e26be RS |
283 | static const struct elf_m68k_plt_info elf_isab_plt_info = { |
284 | ISAB_PLT_ENTRY_SIZE, | |
285 | elf_isab_plt0_entry, { 2, 12 }, | |
286 | elf_isab_plt_entry, { 2, 20 }, 12 | |
287 | }; | |
9e1281c7 | 288 | |
cc3e26be | 289 | #define CPU32_PLT_ENTRY_SIZE 24 |
9e1281c7 | 290 | /* Procedure linkage table entries for the cpu32 */ |
cc3e26be | 291 | static const bfd_byte elf_cpu32_plt0_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 292 | { |
6091b433 | 293 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ |
cc3e26be | 294 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
6091b433 | 295 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
cc3e26be | 296 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
6091b433 | 297 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 CM |
298 | 0, 0, 0, 0, /* pad out to 24 bytes. */ |
299 | 0, 0 | |
300 | }; | |
301 | ||
cc3e26be | 302 | static const bfd_byte elf_cpu32_plt_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 303 | { |
1ca42bad | 304 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
cc3e26be | 305 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
1ca42bad | 306 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 | 307 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
cc3e26be | 308 | 0, 0, 0, 0, /* + reloc index */ |
9e1281c7 | 309 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 310 | 0, 0, 0, 0, /* + .plt - . */ |
9e1281c7 CM |
311 | 0, 0 |
312 | }; | |
313 | ||
cc3e26be RS |
314 | static const struct elf_m68k_plt_info elf_cpu32_plt_info = { |
315 | CPU32_PLT_ENTRY_SIZE, | |
316 | elf_cpu32_plt0_entry, { 4, 12 }, | |
317 | elf_cpu32_plt_entry, { 4, 18 }, 10 | |
318 | }; | |
319 | ||
252b5132 RH |
320 | /* The m68k linker needs to keep track of the number of relocs that it |
321 | decides to copy in check_relocs for each symbol. This is so that it | |
322 | can discard PC relative relocs if it doesn't need them when linking | |
323 | with -Bsymbolic. We store the information in a field extending the | |
324 | regular ELF linker hash table. */ | |
325 | ||
326 | /* This structure keeps track of the number of PC relative relocs we have | |
327 | copied for a given symbol. */ | |
328 | ||
329 | struct elf_m68k_pcrel_relocs_copied | |
330 | { | |
331 | /* Next section. */ | |
332 | struct elf_m68k_pcrel_relocs_copied *next; | |
333 | /* A section in dynobj. */ | |
334 | asection *section; | |
335 | /* Number of relocs copied in this section. */ | |
336 | bfd_size_type count; | |
337 | }; | |
338 | ||
339 | /* m68k ELF linker hash entry. */ | |
340 | ||
341 | struct elf_m68k_link_hash_entry | |
342 | { | |
343 | struct elf_link_hash_entry root; | |
344 | ||
345 | /* Number of PC relative relocs copied for this symbol. */ | |
346 | struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied; | |
347 | }; | |
348 | ||
0cca5f05 AS |
349 | #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent)) |
350 | ||
252b5132 RH |
351 | /* m68k ELF linker hash table. */ |
352 | ||
353 | struct elf_m68k_link_hash_table | |
354 | { | |
355 | struct elf_link_hash_table root; | |
b6152c34 AS |
356 | |
357 | /* Small local sym to section mapping cache. */ | |
358 | struct sym_sec_cache sym_sec; | |
cc3e26be RS |
359 | |
360 | /* The PLT format used by this link, or NULL if the format has not | |
361 | yet been chosen. */ | |
362 | const struct elf_m68k_plt_info *plt_info; | |
252b5132 RH |
363 | }; |
364 | ||
252b5132 RH |
365 | /* Get the m68k ELF linker hash table from a link_info structure. */ |
366 | ||
367 | #define elf_m68k_hash_table(p) \ | |
368 | ((struct elf_m68k_link_hash_table *) (p)->hash) | |
369 | ||
370 | /* Create an entry in an m68k ELF linker hash table. */ | |
371 | ||
372 | static struct bfd_hash_entry * | |
373 | elf_m68k_link_hash_newfunc (entry, table, string) | |
374 | struct bfd_hash_entry *entry; | |
375 | struct bfd_hash_table *table; | |
376 | const char *string; | |
377 | { | |
0cca5f05 | 378 | struct bfd_hash_entry *ret = entry; |
252b5132 RH |
379 | |
380 | /* Allocate the structure if it has not already been allocated by a | |
381 | subclass. */ | |
0cca5f05 AS |
382 | if (ret == NULL) |
383 | ret = bfd_hash_allocate (table, | |
384 | sizeof (struct elf_m68k_link_hash_entry)); | |
385 | if (ret == NULL) | |
386 | return ret; | |
252b5132 RH |
387 | |
388 | /* Call the allocation method of the superclass. */ | |
0cca5f05 AS |
389 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); |
390 | if (ret != NULL) | |
391 | elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
252b5132 | 392 | |
0cca5f05 | 393 | return ret; |
252b5132 RH |
394 | } |
395 | ||
396 | /* Create an m68k ELF linker hash table. */ | |
397 | ||
398 | static struct bfd_link_hash_table * | |
399 | elf_m68k_link_hash_table_create (abfd) | |
400 | bfd *abfd; | |
401 | { | |
402 | struct elf_m68k_link_hash_table *ret; | |
dc810e39 | 403 | bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table); |
252b5132 | 404 | |
e2d34d7d | 405 | ret = (struct elf_m68k_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
406 | if (ret == (struct elf_m68k_link_hash_table *) NULL) |
407 | return NULL; | |
408 | ||
66eb6687 AM |
409 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
410 | elf_m68k_link_hash_newfunc, | |
411 | sizeof (struct elf_m68k_link_hash_entry))) | |
252b5132 | 412 | { |
e2d34d7d | 413 | free (ret); |
252b5132 RH |
414 | return NULL; |
415 | } | |
416 | ||
b6152c34 | 417 | ret->sym_sec.abfd = NULL; |
cc3e26be | 418 | ret->plt_info = NULL; |
b6152c34 | 419 | |
252b5132 RH |
420 | return &ret->root.root; |
421 | } | |
422 | ||
266abb8f NS |
423 | /* Set the right machine number. */ |
424 | ||
425 | static bfd_boolean | |
426 | elf32_m68k_object_p (bfd *abfd) | |
427 | { | |
428 | unsigned int mach = 0; | |
429 | unsigned features = 0; | |
430 | flagword eflags = elf_elfheader (abfd)->e_flags; | |
431 | ||
432 | if (eflags & EF_M68K_M68000) | |
433 | features |= m68000; | |
434 | else if (eflags & EF_M68K_CPU32) | |
435 | features |= cpu32; | |
436 | else if (eflags & EF_M68K_ISA_MASK) | |
437 | { | |
438 | switch (eflags & EF_M68K_ISA_MASK) | |
439 | { | |
0b2e31dc | 440 | case EF_M68K_ISA_A_NODIV: |
266abb8f NS |
441 | features |= mcfisa_a; |
442 | break; | |
0b2e31dc NS |
443 | case EF_M68K_ISA_A: |
444 | features |= mcfisa_a|mcfhwdiv; | |
445 | break; | |
446 | case EF_M68K_ISA_A_PLUS: | |
447 | features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp; | |
448 | break; | |
449 | case EF_M68K_ISA_B_NOUSP: | |
450 | features |= mcfisa_a|mcfisa_b|mcfhwdiv; | |
451 | break; | |
452 | case EF_M68K_ISA_B: | |
453 | features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp; | |
454 | break; | |
266abb8f | 455 | } |
266abb8f NS |
456 | switch (eflags & EF_M68K_MAC_MASK) |
457 | { | |
458 | case EF_M68K_MAC: | |
459 | features |= mcfmac; | |
460 | break; | |
461 | case EF_M68K_EMAC: | |
462 | features |= mcfemac; | |
463 | break; | |
464 | } | |
266abb8f NS |
465 | if (eflags & EF_M68K_FLOAT) |
466 | features |= cfloat; | |
467 | } | |
468 | ||
469 | mach = bfd_m68k_features_to_mach (features); | |
470 | bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach); | |
471 | ||
472 | return TRUE; | |
473 | } | |
474 | ||
ae9a127f | 475 | /* Keep m68k-specific flags in the ELF header. */ |
b34976b6 | 476 | static bfd_boolean |
9e1281c7 CM |
477 | elf32_m68k_set_private_flags (abfd, flags) |
478 | bfd *abfd; | |
479 | flagword flags; | |
480 | { | |
481 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
482 | elf_flags_init (abfd) = TRUE; |
483 | return TRUE; | |
9e1281c7 CM |
484 | } |
485 | ||
9e1281c7 CM |
486 | /* Merge backend specific data from an object file to the output |
487 | object file when linking. */ | |
b34976b6 | 488 | static bfd_boolean |
9e1281c7 CM |
489 | elf32_m68k_merge_private_bfd_data (ibfd, obfd) |
490 | bfd *ibfd; | |
491 | bfd *obfd; | |
492 | { | |
493 | flagword out_flags; | |
494 | flagword in_flags; | |
a9d34880 RS |
495 | flagword out_isa; |
496 | flagword in_isa; | |
497 | const bfd_arch_info_type *arch_info; | |
266abb8f | 498 | |
9e1281c7 CM |
499 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
500 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
266abb8f NS |
501 | return FALSE; |
502 | ||
a9d34880 RS |
503 | /* Get the merged machine. This checks for incompatibility between |
504 | Coldfire & non-Coldfire flags, incompability between different | |
505 | Coldfire ISAs, and incompability between different MAC types. */ | |
506 | arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE); | |
507 | if (!arch_info) | |
508 | return FALSE; | |
9e1281c7 | 509 | |
a9d34880 RS |
510 | bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach); |
511 | ||
512 | in_flags = elf_elfheader (ibfd)->e_flags; | |
9e1281c7 CM |
513 | if (!elf_flags_init (obfd)) |
514 | { | |
b34976b6 | 515 | elf_flags_init (obfd) = TRUE; |
266abb8f NS |
516 | out_flags = in_flags; |
517 | } | |
518 | else | |
519 | { | |
a9d34880 RS |
520 | out_flags = elf_elfheader (obfd)->e_flags; |
521 | in_isa = (in_flags & EF_M68K_ISA_MASK); | |
522 | out_isa = (out_flags & EF_M68K_ISA_MASK); | |
523 | if (in_isa > out_isa) | |
524 | out_flags ^= in_isa ^ out_isa; | |
525 | out_flags |= in_flags ^ in_isa; | |
9e1281c7 | 526 | } |
266abb8f | 527 | elf_elfheader (obfd)->e_flags = out_flags; |
9e1281c7 | 528 | |
b34976b6 | 529 | return TRUE; |
9e1281c7 CM |
530 | } |
531 | ||
ae9a127f | 532 | /* Display the flags field. */ |
b34976b6 | 533 | static bfd_boolean |
9e1281c7 CM |
534 | elf32_m68k_print_private_bfd_data (abfd, ptr) |
535 | bfd *abfd; | |
536 | PTR ptr; | |
537 | { | |
538 | FILE *file = (FILE *) ptr; | |
266abb8f | 539 | flagword eflags = elf_elfheader (abfd)->e_flags; |
9e1281c7 CM |
540 | |
541 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
542 | ||
543 | /* Print normal ELF private data. */ | |
544 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
545 | ||
546 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
547 | ||
548 | /* xgettext:c-format */ | |
517662d4 | 549 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
9e1281c7 | 550 | |
266abb8f NS |
551 | if (eflags & EF_M68K_CPU32) |
552 | fprintf (file, " [cpu32]"); | |
553 | ||
554 | if (eflags & EF_M68K_M68000) | |
555 | fprintf (file, " [m68000]"); | |
9e1281c7 | 556 | |
266abb8f NS |
557 | if (eflags & EF_M68K_CFV4E) |
558 | fprintf (file, " [cfv4e]"); | |
76f57f3a | 559 | |
266abb8f NS |
560 | if (eflags & EF_M68K_ISA_MASK) |
561 | { | |
562 | char const *isa = _("unknown"); | |
563 | char const *mac = _("unknown"); | |
0b2e31dc | 564 | char const *additional = ""; |
266abb8f NS |
565 | |
566 | switch (eflags & EF_M68K_ISA_MASK) | |
567 | { | |
0b2e31dc NS |
568 | case EF_M68K_ISA_A_NODIV: |
569 | isa = "A"; | |
570 | additional = " [nodiv]"; | |
571 | break; | |
266abb8f NS |
572 | case EF_M68K_ISA_A: |
573 | isa = "A"; | |
574 | break; | |
575 | case EF_M68K_ISA_A_PLUS: | |
576 | isa = "A+"; | |
577 | break; | |
0b2e31dc NS |
578 | case EF_M68K_ISA_B_NOUSP: |
579 | isa = "B"; | |
580 | additional = " [nousp]"; | |
581 | break; | |
266abb8f NS |
582 | case EF_M68K_ISA_B: |
583 | isa = "B"; | |
584 | break; | |
585 | } | |
0b2e31dc NS |
586 | fprintf (file, " [isa %s]%s", isa, additional); |
587 | if (eflags & EF_M68K_FLOAT) | |
588 | fprintf (file, " [float]"); | |
266abb8f NS |
589 | switch (eflags & EF_M68K_MAC_MASK) |
590 | { | |
591 | case 0: | |
592 | mac = NULL; | |
593 | break; | |
594 | case EF_M68K_MAC: | |
595 | mac = "mac"; | |
596 | break; | |
597 | case EF_M68K_EMAC: | |
598 | mac = "emac"; | |
599 | break; | |
600 | } | |
601 | if (mac) | |
602 | fprintf (file, " [%s]", mac); | |
266abb8f NS |
603 | } |
604 | ||
9e1281c7 CM |
605 | fputc ('\n', file); |
606 | ||
b34976b6 | 607 | return TRUE; |
9e1281c7 | 608 | } |
252b5132 RH |
609 | /* Look through the relocs for a section during the first phase, and |
610 | allocate space in the global offset table or procedure linkage | |
611 | table. */ | |
612 | ||
b34976b6 | 613 | static bfd_boolean |
252b5132 RH |
614 | elf_m68k_check_relocs (abfd, info, sec, relocs) |
615 | bfd *abfd; | |
616 | struct bfd_link_info *info; | |
617 | asection *sec; | |
618 | const Elf_Internal_Rela *relocs; | |
619 | { | |
620 | bfd *dynobj; | |
621 | Elf_Internal_Shdr *symtab_hdr; | |
622 | struct elf_link_hash_entry **sym_hashes; | |
623 | bfd_signed_vma *local_got_refcounts; | |
624 | const Elf_Internal_Rela *rel; | |
625 | const Elf_Internal_Rela *rel_end; | |
626 | asection *sgot; | |
627 | asection *srelgot; | |
628 | asection *sreloc; | |
629 | ||
1049f94e | 630 | if (info->relocatable) |
b34976b6 | 631 | return TRUE; |
252b5132 RH |
632 | |
633 | dynobj = elf_hash_table (info)->dynobj; | |
634 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
635 | sym_hashes = elf_sym_hashes (abfd); | |
636 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
637 | ||
638 | sgot = NULL; | |
639 | srelgot = NULL; | |
640 | sreloc = NULL; | |
641 | ||
642 | rel_end = relocs + sec->reloc_count; | |
643 | for (rel = relocs; rel < rel_end; rel++) | |
644 | { | |
645 | unsigned long r_symndx; | |
646 | struct elf_link_hash_entry *h; | |
647 | ||
648 | r_symndx = ELF32_R_SYM (rel->r_info); | |
649 | ||
650 | if (r_symndx < symtab_hdr->sh_info) | |
651 | h = NULL; | |
652 | else | |
973a3492 L |
653 | { |
654 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
655 | while (h->root.type == bfd_link_hash_indirect | |
656 | || h->root.type == bfd_link_hash_warning) | |
657 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
658 | } | |
252b5132 RH |
659 | |
660 | switch (ELF32_R_TYPE (rel->r_info)) | |
661 | { | |
662 | case R_68K_GOT8: | |
663 | case R_68K_GOT16: | |
664 | case R_68K_GOT32: | |
665 | if (h != NULL | |
666 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
667 | break; | |
668 | /* Fall through. */ | |
669 | case R_68K_GOT8O: | |
670 | case R_68K_GOT16O: | |
671 | case R_68K_GOT32O: | |
672 | /* This symbol requires a global offset table entry. */ | |
673 | ||
674 | if (dynobj == NULL) | |
675 | { | |
676 | /* Create the .got section. */ | |
677 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
678 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 679 | return FALSE; |
252b5132 RH |
680 | } |
681 | ||
682 | if (sgot == NULL) | |
683 | { | |
684 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
685 | BFD_ASSERT (sgot != NULL); | |
686 | } | |
687 | ||
688 | if (srelgot == NULL | |
689 | && (h != NULL || info->shared)) | |
690 | { | |
691 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
692 | if (srelgot == NULL) | |
693 | { | |
3496cb2a L |
694 | srelgot = bfd_make_section_with_flags (dynobj, |
695 | ".rela.got", | |
696 | (SEC_ALLOC | |
697 | | SEC_LOAD | |
698 | | SEC_HAS_CONTENTS | |
699 | | SEC_IN_MEMORY | |
700 | | SEC_LINKER_CREATED | |
701 | | SEC_READONLY)); | |
252b5132 | 702 | if (srelgot == NULL |
252b5132 | 703 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 704 | return FALSE; |
252b5132 RH |
705 | } |
706 | } | |
707 | ||
708 | if (h != NULL) | |
709 | { | |
51b64d56 | 710 | if (h->got.refcount == 0) |
252b5132 | 711 | { |
252b5132 | 712 | /* Make sure this symbol is output as a dynamic symbol. */ |
b6152c34 | 713 | if (h->dynindx == -1 |
f5385ebf | 714 | && !h->forced_local) |
252b5132 | 715 | { |
c152c796 | 716 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 717 | return FALSE; |
252b5132 RH |
718 | } |
719 | ||
720 | /* Allocate space in the .got section. */ | |
eea6121a | 721 | sgot->size += 4; |
252b5132 | 722 | /* Allocate relocation space. */ |
eea6121a | 723 | srelgot->size += sizeof (Elf32_External_Rela); |
252b5132 | 724 | } |
51b64d56 | 725 | h->got.refcount++; |
252b5132 RH |
726 | } |
727 | else | |
728 | { | |
729 | /* This is a global offset table entry for a local symbol. */ | |
730 | if (local_got_refcounts == NULL) | |
731 | { | |
dc810e39 | 732 | bfd_size_type size; |
252b5132 | 733 | |
dc810e39 AM |
734 | size = symtab_hdr->sh_info; |
735 | size *= sizeof (bfd_signed_vma); | |
252b5132 | 736 | local_got_refcounts = ((bfd_signed_vma *) |
51b64d56 | 737 | bfd_zalloc (abfd, size)); |
252b5132 | 738 | if (local_got_refcounts == NULL) |
b34976b6 | 739 | return FALSE; |
252b5132 | 740 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 741 | } |
51b64d56 | 742 | if (local_got_refcounts[r_symndx] == 0) |
252b5132 | 743 | { |
eea6121a | 744 | sgot->size += 4; |
252b5132 RH |
745 | if (info->shared) |
746 | { | |
747 | /* If we are generating a shared object, we need to | |
748 | output a R_68K_RELATIVE reloc so that the dynamic | |
749 | linker can adjust this GOT entry. */ | |
eea6121a | 750 | srelgot->size += sizeof (Elf32_External_Rela); |
252b5132 RH |
751 | } |
752 | } | |
51b64d56 | 753 | local_got_refcounts[r_symndx]++; |
252b5132 RH |
754 | } |
755 | break; | |
756 | ||
757 | case R_68K_PLT8: | |
758 | case R_68K_PLT16: | |
759 | case R_68K_PLT32: | |
760 | /* This symbol requires a procedure linkage table entry. We | |
761 | actually build the entry in adjust_dynamic_symbol, | |
762 | because this might be a case of linking PIC code which is | |
763 | never referenced by a dynamic object, in which case we | |
764 | don't need to generate a procedure linkage table entry | |
765 | after all. */ | |
766 | ||
767 | /* If this is a local symbol, we resolve it directly without | |
768 | creating a procedure linkage table entry. */ | |
769 | if (h == NULL) | |
770 | continue; | |
771 | ||
f5385ebf | 772 | h->needs_plt = 1; |
51b64d56 | 773 | h->plt.refcount++; |
252b5132 RH |
774 | break; |
775 | ||
776 | case R_68K_PLT8O: | |
777 | case R_68K_PLT16O: | |
778 | case R_68K_PLT32O: | |
779 | /* This symbol requires a procedure linkage table entry. */ | |
780 | ||
781 | if (h == NULL) | |
782 | { | |
783 | /* It does not make sense to have this relocation for a | |
784 | local symbol. FIXME: does it? How to handle it if | |
785 | it does make sense? */ | |
786 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 787 | return FALSE; |
252b5132 RH |
788 | } |
789 | ||
790 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 791 | if (h->dynindx == -1 |
f5385ebf | 792 | && !h->forced_local) |
252b5132 | 793 | { |
c152c796 | 794 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 795 | return FALSE; |
252b5132 RH |
796 | } |
797 | ||
f5385ebf | 798 | h->needs_plt = 1; |
51b64d56 | 799 | h->plt.refcount++; |
252b5132 RH |
800 | break; |
801 | ||
802 | case R_68K_PC8: | |
803 | case R_68K_PC16: | |
804 | case R_68K_PC32: | |
805 | /* If we are creating a shared library and this is not a local | |
806 | symbol, we need to copy the reloc into the shared library. | |
807 | However when linking with -Bsymbolic and this is a global | |
808 | symbol which is defined in an object we are including in the | |
809 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
810 | reloc directly. At this point we have not seen all the input | |
811 | files, so it is possible that DEF_REGULAR is not set now but | |
812 | will be set later (it is never cleared). We account for that | |
813 | possibility below by storing information in the | |
814 | pcrel_relocs_copied field of the hash table entry. */ | |
815 | if (!(info->shared | |
816 | && (sec->flags & SEC_ALLOC) != 0 | |
817 | && h != NULL | |
818 | && (!info->symbolic | |
b6152c34 | 819 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 820 | || !h->def_regular))) |
252b5132 RH |
821 | { |
822 | if (h != NULL) | |
823 | { | |
824 | /* Make sure a plt entry is created for this symbol if | |
825 | it turns out to be a function defined by a dynamic | |
826 | object. */ | |
51b64d56 | 827 | h->plt.refcount++; |
252b5132 RH |
828 | } |
829 | break; | |
830 | } | |
831 | /* Fall through. */ | |
832 | case R_68K_8: | |
833 | case R_68K_16: | |
834 | case R_68K_32: | |
835 | if (h != NULL) | |
836 | { | |
837 | /* Make sure a plt entry is created for this symbol if it | |
838 | turns out to be a function defined by a dynamic object. */ | |
51b64d56 | 839 | h->plt.refcount++; |
252b5132 RH |
840 | } |
841 | ||
842 | /* If we are creating a shared library, we need to copy the | |
843 | reloc into the shared library. */ | |
844 | if (info->shared | |
845 | && (sec->flags & SEC_ALLOC) != 0) | |
846 | { | |
847 | /* When creating a shared object, we must copy these | |
848 | reloc types into the output file. We create a reloc | |
849 | section in dynobj and make room for this reloc. */ | |
850 | if (sreloc == NULL) | |
851 | { | |
852 | const char *name; | |
853 | ||
854 | name = (bfd_elf_string_from_elf_section | |
855 | (abfd, | |
856 | elf_elfheader (abfd)->e_shstrndx, | |
857 | elf_section_data (sec)->rel_hdr.sh_name)); | |
858 | if (name == NULL) | |
b34976b6 | 859 | return FALSE; |
252b5132 | 860 | |
0112cd26 | 861 | BFD_ASSERT (CONST_STRNEQ (name, ".rela") |
252b5132 RH |
862 | && strcmp (bfd_get_section_name (abfd, sec), |
863 | name + 5) == 0); | |
864 | ||
865 | sreloc = bfd_get_section_by_name (dynobj, name); | |
866 | if (sreloc == NULL) | |
867 | { | |
3496cb2a L |
868 | sreloc = bfd_make_section_with_flags (dynobj, |
869 | name, | |
870 | (SEC_ALLOC | |
871 | | SEC_LOAD | |
872 | | SEC_HAS_CONTENTS | |
873 | | SEC_IN_MEMORY | |
874 | | SEC_LINKER_CREATED | |
875 | | SEC_READONLY)); | |
252b5132 | 876 | if (sreloc == NULL |
252b5132 | 877 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) |
b34976b6 | 878 | return FALSE; |
252b5132 | 879 | } |
d2ff124f | 880 | elf_section_data (sec)->sreloc = sreloc; |
252b5132 RH |
881 | } |
882 | ||
3e829b4a AS |
883 | if (sec->flags & SEC_READONLY |
884 | /* Don't set DF_TEXTREL yet for PC relative | |
885 | relocations, they might be discarded later. */ | |
886 | && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8 | |
887 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
888 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)) | |
889 | info->flags |= DF_TEXTREL; | |
890 | ||
eea6121a | 891 | sreloc->size += sizeof (Elf32_External_Rela); |
252b5132 | 892 | |
b6152c34 AS |
893 | /* We count the number of PC relative relocations we have |
894 | entered for this symbol, so that we can discard them | |
895 | again if, in the -Bsymbolic case, the symbol is later | |
896 | defined by a regular object, or, in the normal shared | |
897 | case, the symbol is forced to be local. Note that this | |
898 | function is only called if we are using an m68kelf linker | |
899 | hash table, which means that h is really a pointer to an | |
252b5132 | 900 | elf_m68k_link_hash_entry. */ |
b6152c34 AS |
901 | if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8 |
902 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
903 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32) | |
252b5132 | 904 | { |
252b5132 | 905 | struct elf_m68k_pcrel_relocs_copied *p; |
b6152c34 AS |
906 | struct elf_m68k_pcrel_relocs_copied **head; |
907 | ||
908 | if (h != NULL) | |
909 | { | |
910 | struct elf_m68k_link_hash_entry *eh | |
0cca5f05 | 911 | = elf_m68k_hash_entry (h); |
b6152c34 AS |
912 | head = &eh->pcrel_relocs_copied; |
913 | } | |
914 | else | |
915 | { | |
916 | asection *s; | |
6edfbbad DJ |
917 | void *vpp; |
918 | ||
b6152c34 AS |
919 | s = (bfd_section_from_r_symndx |
920 | (abfd, &elf_m68k_hash_table (info)->sym_sec, | |
921 | sec, r_symndx)); | |
922 | if (s == NULL) | |
923 | return FALSE; | |
252b5132 | 924 | |
6edfbbad DJ |
925 | vpp = &elf_section_data (s)->local_dynrel; |
926 | head = (struct elf_m68k_pcrel_relocs_copied **) vpp; | |
b6152c34 | 927 | } |
252b5132 | 928 | |
b6152c34 | 929 | for (p = *head; p != NULL; p = p->next) |
252b5132 RH |
930 | if (p->section == sreloc) |
931 | break; | |
932 | ||
933 | if (p == NULL) | |
934 | { | |
935 | p = ((struct elf_m68k_pcrel_relocs_copied *) | |
dc810e39 | 936 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
252b5132 | 937 | if (p == NULL) |
b34976b6 | 938 | return FALSE; |
b6152c34 AS |
939 | p->next = *head; |
940 | *head = p; | |
252b5132 RH |
941 | p->section = sreloc; |
942 | p->count = 0; | |
943 | } | |
944 | ||
945 | ++p->count; | |
946 | } | |
947 | } | |
948 | ||
949 | break; | |
950 | ||
951 | /* This relocation describes the C++ object vtable hierarchy. | |
952 | Reconstruct it for later use during GC. */ | |
953 | case R_68K_GNU_VTINHERIT: | |
c152c796 | 954 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 955 | return FALSE; |
252b5132 RH |
956 | break; |
957 | ||
958 | /* This relocation describes which C++ vtable entries are actually | |
959 | used. Record for later use during GC. */ | |
960 | case R_68K_GNU_VTENTRY: | |
c152c796 | 961 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 962 | return FALSE; |
252b5132 RH |
963 | break; |
964 | ||
965 | default: | |
966 | break; | |
967 | } | |
968 | } | |
969 | ||
b34976b6 | 970 | return TRUE; |
252b5132 RH |
971 | } |
972 | ||
973 | /* Return the section that should be marked against GC for a given | |
974 | relocation. */ | |
975 | ||
976 | static asection * | |
07adf181 AM |
977 | elf_m68k_gc_mark_hook (asection *sec, |
978 | struct bfd_link_info *info, | |
979 | Elf_Internal_Rela *rel, | |
980 | struct elf_link_hash_entry *h, | |
981 | Elf_Internal_Sym *sym) | |
252b5132 RH |
982 | { |
983 | if (h != NULL) | |
07adf181 AM |
984 | switch (ELF32_R_TYPE (rel->r_info)) |
985 | { | |
986 | case R_68K_GNU_VTINHERIT: | |
987 | case R_68K_GNU_VTENTRY: | |
988 | return NULL; | |
989 | } | |
990 | ||
991 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
992 | } |
993 | ||
994 | /* Update the got entry reference counts for the section being removed. */ | |
995 | ||
b34976b6 | 996 | static bfd_boolean |
07adf181 AM |
997 | elf_m68k_gc_sweep_hook (bfd *abfd, |
998 | struct bfd_link_info *info, | |
999 | asection *sec, | |
1000 | const Elf_Internal_Rela *relocs) | |
252b5132 RH |
1001 | { |
1002 | Elf_Internal_Shdr *symtab_hdr; | |
1003 | struct elf_link_hash_entry **sym_hashes; | |
1004 | bfd_signed_vma *local_got_refcounts; | |
1005 | const Elf_Internal_Rela *rel, *relend; | |
252b5132 | 1006 | bfd *dynobj; |
dd5724d5 AM |
1007 | asection *sgot; |
1008 | asection *srelgot; | |
252b5132 | 1009 | |
252b5132 | 1010 | dynobj = elf_hash_table (info)->dynobj; |
dd5724d5 | 1011 | if (dynobj == NULL) |
b34976b6 | 1012 | return TRUE; |
dd5724d5 | 1013 | |
4f075348 KH |
1014 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1015 | sym_hashes = elf_sym_hashes (abfd); | |
1016 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1017 | ||
dd5724d5 AM |
1018 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1019 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
252b5132 RH |
1020 | |
1021 | relend = relocs + sec->reloc_count; | |
1022 | for (rel = relocs; rel < relend; rel++) | |
1023 | { | |
4f075348 | 1024 | unsigned long r_symndx; |
3eb128b2 AM |
1025 | struct elf_link_hash_entry *h = NULL; |
1026 | ||
1027 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1028 | if (r_symndx >= symtab_hdr->sh_info) | |
1029 | { | |
1030 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1031 | while (h->root.type == bfd_link_hash_indirect | |
1032 | || h->root.type == bfd_link_hash_warning) | |
1033 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1034 | } | |
4f075348 | 1035 | |
252b5132 RH |
1036 | switch (ELF32_R_TYPE (rel->r_info)) |
1037 | { | |
1038 | case R_68K_GOT8: | |
1039 | case R_68K_GOT16: | |
1040 | case R_68K_GOT32: | |
1041 | case R_68K_GOT8O: | |
1042 | case R_68K_GOT16O: | |
1043 | case R_68K_GOT32O: | |
3eb128b2 | 1044 | if (h != NULL) |
252b5132 | 1045 | { |
252b5132 RH |
1046 | if (h->got.refcount > 0) |
1047 | { | |
1048 | --h->got.refcount; | |
1049 | if (h->got.refcount == 0) | |
1050 | { | |
1051 | /* We don't need the .got entry any more. */ | |
eea6121a AM |
1052 | sgot->size -= 4; |
1053 | srelgot->size -= sizeof (Elf32_External_Rela); | |
252b5132 RH |
1054 | } |
1055 | } | |
1056 | } | |
dd5724d5 | 1057 | else if (local_got_refcounts != NULL) |
252b5132 RH |
1058 | { |
1059 | if (local_got_refcounts[r_symndx] > 0) | |
1060 | { | |
1061 | --local_got_refcounts[r_symndx]; | |
1062 | if (local_got_refcounts[r_symndx] == 0) | |
1063 | { | |
1064 | /* We don't need the .got entry any more. */ | |
eea6121a | 1065 | sgot->size -= 4; |
252b5132 | 1066 | if (info->shared) |
eea6121a | 1067 | srelgot->size -= sizeof (Elf32_External_Rela); |
252b5132 RH |
1068 | } |
1069 | } | |
1070 | } | |
1071 | break; | |
1072 | ||
1073 | case R_68K_PLT8: | |
1074 | case R_68K_PLT16: | |
1075 | case R_68K_PLT32: | |
1076 | case R_68K_PLT8O: | |
1077 | case R_68K_PLT16O: | |
1078 | case R_68K_PLT32O: | |
1079 | case R_68K_PC8: | |
1080 | case R_68K_PC16: | |
1081 | case R_68K_PC32: | |
1082 | case R_68K_8: | |
1083 | case R_68K_16: | |
1084 | case R_68K_32: | |
3eb128b2 | 1085 | if (h != NULL) |
252b5132 | 1086 | { |
252b5132 RH |
1087 | if (h->plt.refcount > 0) |
1088 | --h->plt.refcount; | |
1089 | } | |
1090 | break; | |
1091 | ||
1092 | default: | |
1093 | break; | |
1094 | } | |
1095 | } | |
1096 | ||
b34976b6 | 1097 | return TRUE; |
252b5132 | 1098 | } |
cc3e26be RS |
1099 | \f |
1100 | /* Return the type of PLT associated with OUTPUT_BFD. */ | |
1101 | ||
1102 | static const struct elf_m68k_plt_info * | |
1103 | elf_m68k_get_plt_info (bfd *output_bfd) | |
1104 | { | |
1105 | unsigned int features; | |
1106 | ||
1107 | features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd)); | |
1108 | if (features & cpu32) | |
1109 | return &elf_cpu32_plt_info; | |
1110 | if (features & mcfisa_b) | |
1111 | return &elf_isab_plt_info; | |
1112 | return &elf_m68k_plt_info; | |
1113 | } | |
1114 | ||
1115 | /* This function is called after all the input files have been read, | |
1116 | and the input sections have been assigned to output sections. | |
1117 | It's a convenient place to determine the PLT style. */ | |
1118 | ||
1119 | static bfd_boolean | |
1120 | elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) | |
1121 | { | |
1122 | elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd); | |
1123 | return TRUE; | |
1124 | } | |
252b5132 | 1125 | |
252b5132 RH |
1126 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1127 | regular object. The current definition is in some section of the | |
1128 | dynamic object, but we're not including those sections. We have to | |
1129 | change the definition to something the rest of the link can | |
1130 | understand. */ | |
1131 | ||
b34976b6 | 1132 | static bfd_boolean |
252b5132 RH |
1133 | elf_m68k_adjust_dynamic_symbol (info, h) |
1134 | struct bfd_link_info *info; | |
1135 | struct elf_link_hash_entry *h; | |
1136 | { | |
cc3e26be | 1137 | struct elf_m68k_link_hash_table *htab; |
252b5132 RH |
1138 | bfd *dynobj; |
1139 | asection *s; | |
1140 | unsigned int power_of_two; | |
1141 | ||
cc3e26be | 1142 | htab = elf_m68k_hash_table (info); |
252b5132 RH |
1143 | dynobj = elf_hash_table (info)->dynobj; |
1144 | ||
1145 | /* Make sure we know what is going on here. */ | |
1146 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 1147 | && (h->needs_plt |
f6e332e6 | 1148 | || h->u.weakdef != NULL |
f5385ebf AM |
1149 | || (h->def_dynamic |
1150 | && h->ref_regular | |
1151 | && !h->def_regular))); | |
252b5132 RH |
1152 | |
1153 | /* If this is a function, put it in the procedure linkage table. We | |
1154 | will fill in the contents of the procedure linkage table later, | |
1155 | when we know the address of the .got section. */ | |
1156 | if (h->type == STT_FUNC | |
f5385ebf | 1157 | || h->needs_plt) |
252b5132 | 1158 | { |
9dfe8738 AS |
1159 | if ((h->plt.refcount <= 0 |
1160 | || SYMBOL_CALLS_LOCAL (info, h) | |
1161 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1162 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
1163 | /* We must always create the plt entry if it was referenced |
1164 | by a PLTxxO relocation. In this case we already recorded | |
1165 | it as a dynamic symbol. */ | |
1166 | && h->dynindx == -1) | |
1167 | { | |
1168 | /* This case can occur if we saw a PLTxx reloc in an input | |
1169 | file, but the symbol was never referred to by a dynamic | |
9dfe8738 AS |
1170 | object, or if all references were garbage collected. In |
1171 | such a case, we don't actually need to build a procedure | |
1172 | linkage table, and we can just do a PCxx reloc instead. */ | |
252b5132 | 1173 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1174 | h->needs_plt = 0; |
b34976b6 | 1175 | return TRUE; |
252b5132 RH |
1176 | } |
1177 | ||
1178 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 1179 | if (h->dynindx == -1 |
f5385ebf | 1180 | && !h->forced_local) |
252b5132 | 1181 | { |
c152c796 | 1182 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1183 | return FALSE; |
252b5132 RH |
1184 | } |
1185 | ||
1186 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
1187 | BFD_ASSERT (s != NULL); | |
1188 | ||
1189 | /* If this is the first .plt entry, make room for the special | |
1190 | first entry. */ | |
eea6121a | 1191 | if (s->size == 0) |
cc3e26be | 1192 | s->size = htab->plt_info->size; |
252b5132 RH |
1193 | |
1194 | /* If this symbol is not defined in a regular file, and we are | |
1195 | not generating a shared library, then set the symbol to this | |
1196 | location in the .plt. This is required to make function | |
1197 | pointers compare as equal between the normal executable and | |
1198 | the shared library. */ | |
1199 | if (!info->shared | |
f5385ebf | 1200 | && !h->def_regular) |
252b5132 RH |
1201 | { |
1202 | h->root.u.def.section = s; | |
eea6121a | 1203 | h->root.u.def.value = s->size; |
252b5132 RH |
1204 | } |
1205 | ||
eea6121a | 1206 | h->plt.offset = s->size; |
252b5132 RH |
1207 | |
1208 | /* Make room for this entry. */ | |
cc3e26be | 1209 | s->size += htab->plt_info->size; |
252b5132 RH |
1210 | |
1211 | /* We also need to make an entry in the .got.plt section, which | |
1212 | will be placed in the .got section by the linker script. */ | |
252b5132 RH |
1213 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
1214 | BFD_ASSERT (s != NULL); | |
eea6121a | 1215 | s->size += 4; |
252b5132 RH |
1216 | |
1217 | /* We also need to make an entry in the .rela.plt section. */ | |
252b5132 RH |
1218 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
1219 | BFD_ASSERT (s != NULL); | |
eea6121a | 1220 | s->size += sizeof (Elf32_External_Rela); |
252b5132 | 1221 | |
b34976b6 | 1222 | return TRUE; |
252b5132 RH |
1223 | } |
1224 | ||
1225 | /* Reinitialize the plt offset now that it is not used as a reference | |
1226 | count any more. */ | |
1227 | h->plt.offset = (bfd_vma) -1; | |
1228 | ||
1229 | /* If this is a weak symbol, and there is a real definition, the | |
1230 | processor independent code will have arranged for us to see the | |
1231 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1232 | if (h->u.weakdef != NULL) |
252b5132 | 1233 | { |
f6e332e6 AM |
1234 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1235 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1236 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1237 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1238 | return TRUE; |
252b5132 RH |
1239 | } |
1240 | ||
1241 | /* This is a reference to a symbol defined by a dynamic object which | |
1242 | is not a function. */ | |
1243 | ||
1244 | /* If we are creating a shared library, we must presume that the | |
1245 | only references to the symbol are via the global offset table. | |
1246 | For such cases we need not do anything here; the relocations will | |
1247 | be handled correctly by relocate_section. */ | |
1248 | if (info->shared) | |
b34976b6 | 1249 | return TRUE; |
252b5132 | 1250 | |
909272ee AM |
1251 | if (h->size == 0) |
1252 | { | |
1253 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1254 | h->root.root.string); | |
1255 | return TRUE; | |
1256 | } | |
1257 | ||
252b5132 RH |
1258 | /* We must allocate the symbol in our .dynbss section, which will |
1259 | become part of the .bss section of the executable. There will be | |
1260 | an entry for this symbol in the .dynsym section. The dynamic | |
1261 | object will contain position independent code, so all references | |
1262 | from the dynamic object to this symbol will go through the global | |
1263 | offset table. The dynamic linker will use the .dynsym entry to | |
1264 | determine the address it must put in the global offset table, so | |
1265 | both the dynamic object and the regular object will refer to the | |
1266 | same memory location for the variable. */ | |
1267 | ||
1268 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1269 | BFD_ASSERT (s != NULL); | |
1270 | ||
1271 | /* We must generate a R_68K_COPY reloc to tell the dynamic linker to | |
1272 | copy the initial value out of the dynamic object and into the | |
1273 | runtime process image. We need to remember the offset into the | |
1274 | .rela.bss section we are going to use. */ | |
1275 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1276 | { | |
1277 | asection *srel; | |
1278 | ||
1279 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1280 | BFD_ASSERT (srel != NULL); | |
eea6121a | 1281 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1282 | h->needs_copy = 1; |
252b5132 RH |
1283 | } |
1284 | ||
1285 | /* We need to figure out the alignment required for this symbol. I | |
1286 | have no idea how ELF linkers handle this. */ | |
1287 | power_of_two = bfd_log2 (h->size); | |
1288 | if (power_of_two > 3) | |
1289 | power_of_two = 3; | |
1290 | ||
1291 | /* Apply the required alignment. */ | |
eea6121a | 1292 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
252b5132 RH |
1293 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
1294 | { | |
1295 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 1296 | return FALSE; |
252b5132 RH |
1297 | } |
1298 | ||
1299 | /* Define the symbol as being at this point in the section. */ | |
1300 | h->root.u.def.section = s; | |
eea6121a | 1301 | h->root.u.def.value = s->size; |
252b5132 RH |
1302 | |
1303 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 1304 | s->size += h->size; |
252b5132 | 1305 | |
b34976b6 | 1306 | return TRUE; |
252b5132 RH |
1307 | } |
1308 | ||
1309 | /* Set the sizes of the dynamic sections. */ | |
1310 | ||
b34976b6 | 1311 | static bfd_boolean |
252b5132 | 1312 | elf_m68k_size_dynamic_sections (output_bfd, info) |
aa91b392 | 1313 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1314 | struct bfd_link_info *info; |
1315 | { | |
1316 | bfd *dynobj; | |
1317 | asection *s; | |
b34976b6 AM |
1318 | bfd_boolean plt; |
1319 | bfd_boolean relocs; | |
252b5132 RH |
1320 | |
1321 | dynobj = elf_hash_table (info)->dynobj; | |
1322 | BFD_ASSERT (dynobj != NULL); | |
1323 | ||
1324 | if (elf_hash_table (info)->dynamic_sections_created) | |
1325 | { | |
1326 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1327 | if (info->executable) |
252b5132 RH |
1328 | { |
1329 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1330 | BFD_ASSERT (s != NULL); | |
eea6121a | 1331 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
1332 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1333 | } | |
1334 | } | |
1335 | else | |
1336 | { | |
1337 | /* We may have created entries in the .rela.got section. | |
1338 | However, if we are not creating the dynamic sections, we will | |
1339 | not actually use these entries. Reset the size of .rela.got, | |
1340 | which will cause it to get stripped from the output file | |
1341 | below. */ | |
1342 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1343 | if (s != NULL) | |
eea6121a | 1344 | s->size = 0; |
252b5132 RH |
1345 | } |
1346 | ||
b6152c34 AS |
1347 | /* If this is a -Bsymbolic shared link, then we need to discard all |
1348 | PC relative relocs against symbols defined in a regular object. | |
1349 | For the normal shared case we discard the PC relative relocs | |
1350 | against symbols that have become local due to visibility changes. | |
1351 | We allocated space for them in the check_relocs routine, but we | |
1352 | will not fill them in in the relocate_section routine. */ | |
1353 | if (info->shared) | |
0cca5f05 AS |
1354 | elf_link_hash_traverse (elf_hash_table (info), |
1355 | elf_m68k_discard_copies, | |
1356 | (PTR) info); | |
252b5132 RH |
1357 | |
1358 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1359 | determined the sizes of the various dynamic sections. Allocate | |
1360 | memory for them. */ | |
b34976b6 AM |
1361 | plt = FALSE; |
1362 | relocs = FALSE; | |
252b5132 RH |
1363 | for (s = dynobj->sections; s != NULL; s = s->next) |
1364 | { | |
1365 | const char *name; | |
252b5132 RH |
1366 | |
1367 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1368 | continue; | |
1369 | ||
1370 | /* It's OK to base decisions on the section name, because none | |
1371 | of the dynobj section names depend upon the input files. */ | |
1372 | name = bfd_get_section_name (dynobj, s); | |
1373 | ||
252b5132 RH |
1374 | if (strcmp (name, ".plt") == 0) |
1375 | { | |
c456f082 AM |
1376 | /* Remember whether there is a PLT. */ |
1377 | plt = s->size != 0; | |
252b5132 | 1378 | } |
0112cd26 | 1379 | else if (CONST_STRNEQ (name, ".rela")) |
252b5132 | 1380 | { |
c456f082 | 1381 | if (s->size != 0) |
252b5132 | 1382 | { |
b34976b6 | 1383 | relocs = TRUE; |
252b5132 RH |
1384 | |
1385 | /* We use the reloc_count field as a counter if we need | |
1386 | to copy relocs into the output file. */ | |
1387 | s->reloc_count = 0; | |
1388 | } | |
1389 | } | |
0112cd26 | 1390 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 1391 | && strcmp (name, ".dynbss") != 0) |
252b5132 RH |
1392 | { |
1393 | /* It's not one of our sections, so don't allocate space. */ | |
1394 | continue; | |
1395 | } | |
1396 | ||
c456f082 | 1397 | if (s->size == 0) |
252b5132 | 1398 | { |
c456f082 AM |
1399 | /* If we don't need this section, strip it from the |
1400 | output file. This is mostly to handle .rela.bss and | |
1401 | .rela.plt. We must create both sections in | |
1402 | create_dynamic_sections, because they must be created | |
1403 | before the linker maps input sections to output | |
1404 | sections. The linker does that before | |
1405 | adjust_dynamic_symbol is called, and it is that | |
1406 | function which decides whether anything needs to go | |
1407 | into these sections. */ | |
8423293d | 1408 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
1409 | continue; |
1410 | } | |
1411 | ||
c456f082 AM |
1412 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1413 | continue; | |
1414 | ||
252b5132 | 1415 | /* Allocate memory for the section contents. */ |
7a9af8c4 NC |
1416 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
1417 | Unused entries should be reclaimed before the section's contents | |
1418 | are written out, but at the moment this does not happen. Thus in | |
1419 | order to prevent writing out garbage, we initialise the section's | |
1420 | contents to zero. */ | |
eea6121a | 1421 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 1422 | if (s->contents == NULL) |
b34976b6 | 1423 | return FALSE; |
252b5132 RH |
1424 | } |
1425 | ||
1426 | if (elf_hash_table (info)->dynamic_sections_created) | |
1427 | { | |
1428 | /* Add some entries to the .dynamic section. We fill in the | |
1429 | values later, in elf_m68k_finish_dynamic_sections, but we | |
1430 | must add the entries now so that we get the correct size for | |
1431 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1432 | dynamic linker and used by the debugger. */ | |
dc810e39 | 1433 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1434 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 1435 | |
252b5132 RH |
1436 | if (!info->shared) |
1437 | { | |
dc810e39 | 1438 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1439 | return FALSE; |
252b5132 RH |
1440 | } |
1441 | ||
1442 | if (plt) | |
1443 | { | |
dc810e39 AM |
1444 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1445 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1446 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1447 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1448 | return FALSE; |
252b5132 RH |
1449 | } |
1450 | ||
1451 | if (relocs) | |
1452 | { | |
dc810e39 AM |
1453 | if (!add_dynamic_entry (DT_RELA, 0) |
1454 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1455 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1456 | return FALSE; |
252b5132 RH |
1457 | } |
1458 | ||
aa91b392 | 1459 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 1460 | { |
dc810e39 | 1461 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1462 | return FALSE; |
252b5132 RH |
1463 | } |
1464 | } | |
dc810e39 | 1465 | #undef add_dynamic_entry |
252b5132 | 1466 | |
b34976b6 | 1467 | return TRUE; |
252b5132 RH |
1468 | } |
1469 | ||
0cca5f05 | 1470 | /* This function is called via elf_link_hash_traverse if we are |
b6152c34 AS |
1471 | creating a shared object. In the -Bsymbolic case it discards the |
1472 | space allocated to copy PC relative relocs against symbols which | |
3e829b4a | 1473 | are defined in regular objects. For the normal shared case, it |
b6152c34 AS |
1474 | discards space for pc-relative relocs that have become local due to |
1475 | symbol visibility changes. We allocated space for them in the | |
1476 | check_relocs routine, but we won't fill them in in the | |
3e829b4a AS |
1477 | relocate_section routine. |
1478 | ||
1479 | We also check whether any of the remaining relocations apply | |
1480 | against a readonly section, and set the DF_TEXTREL flag in this | |
1481 | case. */ | |
252b5132 | 1482 | |
b34976b6 | 1483 | static bfd_boolean |
b6152c34 | 1484 | elf_m68k_discard_copies (h, inf) |
0cca5f05 | 1485 | struct elf_link_hash_entry *h; |
b6152c34 | 1486 | PTR inf; |
252b5132 | 1487 | { |
b6152c34 | 1488 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
252b5132 RH |
1489 | struct elf_m68k_pcrel_relocs_copied *s; |
1490 | ||
0cca5f05 AS |
1491 | if (h->root.type == bfd_link_hash_warning) |
1492 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e92d460e | 1493 | |
f5385ebf | 1494 | if (!h->def_regular |
b6152c34 | 1495 | || (!info->symbolic |
f5385ebf | 1496 | && !h->forced_local)) |
3e829b4a AS |
1497 | { |
1498 | if ((info->flags & DF_TEXTREL) == 0) | |
1499 | { | |
1500 | /* Look for relocations against read-only sections. */ | |
0cca5f05 AS |
1501 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
1502 | s != NULL; | |
1503 | s = s->next) | |
3e829b4a AS |
1504 | if ((s->section->flags & SEC_READONLY) != 0) |
1505 | { | |
1506 | info->flags |= DF_TEXTREL; | |
1507 | break; | |
1508 | } | |
1509 | } | |
0cca5f05 | 1510 | |
3e829b4a AS |
1511 | return TRUE; |
1512 | } | |
252b5132 | 1513 | |
0cca5f05 AS |
1514 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
1515 | s != NULL; | |
1516 | s = s->next) | |
eea6121a | 1517 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
252b5132 | 1518 | |
b34976b6 | 1519 | return TRUE; |
252b5132 RH |
1520 | } |
1521 | ||
1522 | /* Relocate an M68K ELF section. */ | |
1523 | ||
b34976b6 | 1524 | static bfd_boolean |
252b5132 RH |
1525 | elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section, |
1526 | contents, relocs, local_syms, local_sections) | |
1527 | bfd *output_bfd; | |
1528 | struct bfd_link_info *info; | |
1529 | bfd *input_bfd; | |
1530 | asection *input_section; | |
1531 | bfd_byte *contents; | |
1532 | Elf_Internal_Rela *relocs; | |
1533 | Elf_Internal_Sym *local_syms; | |
1534 | asection **local_sections; | |
1535 | { | |
1536 | bfd *dynobj; | |
1537 | Elf_Internal_Shdr *symtab_hdr; | |
1538 | struct elf_link_hash_entry **sym_hashes; | |
1539 | bfd_vma *local_got_offsets; | |
1540 | asection *sgot; | |
1541 | asection *splt; | |
1542 | asection *sreloc; | |
1543 | Elf_Internal_Rela *rel; | |
1544 | Elf_Internal_Rela *relend; | |
1545 | ||
1049f94e | 1546 | if (info->relocatable) |
b34976b6 | 1547 | return TRUE; |
b491616a | 1548 | |
252b5132 RH |
1549 | dynobj = elf_hash_table (info)->dynobj; |
1550 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1551 | sym_hashes = elf_sym_hashes (input_bfd); | |
1552 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1553 | ||
1554 | sgot = NULL; | |
1555 | splt = NULL; | |
1556 | sreloc = NULL; | |
1557 | ||
1558 | rel = relocs; | |
1559 | relend = relocs + input_section->reloc_count; | |
1560 | for (; rel < relend; rel++) | |
1561 | { | |
1562 | int r_type; | |
1563 | reloc_howto_type *howto; | |
1564 | unsigned long r_symndx; | |
1565 | struct elf_link_hash_entry *h; | |
1566 | Elf_Internal_Sym *sym; | |
1567 | asection *sec; | |
1568 | bfd_vma relocation; | |
44f745a6 | 1569 | bfd_boolean unresolved_reloc; |
252b5132 RH |
1570 | bfd_reloc_status_type r; |
1571 | ||
1572 | r_type = ELF32_R_TYPE (rel->r_info); | |
1573 | if (r_type < 0 || r_type >= (int) R_68K_max) | |
1574 | { | |
1575 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1576 | return FALSE; |
252b5132 RH |
1577 | } |
1578 | howto = howto_table + r_type; | |
1579 | ||
1580 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1581 | ||
252b5132 RH |
1582 | h = NULL; |
1583 | sym = NULL; | |
1584 | sec = NULL; | |
44f745a6 | 1585 | unresolved_reloc = FALSE; |
560e09e9 | 1586 | |
252b5132 RH |
1587 | if (r_symndx < symtab_hdr->sh_info) |
1588 | { | |
1589 | sym = local_syms + r_symndx; | |
1590 | sec = local_sections[r_symndx]; | |
8517fae7 | 1591 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
1592 | } |
1593 | else | |
1594 | { | |
560e09e9 NC |
1595 | bfd_boolean warned; |
1596 | ||
b2a8e766 AM |
1597 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1598 | r_symndx, symtab_hdr, sym_hashes, | |
1599 | h, sec, relocation, | |
1600 | unresolved_reloc, warned); | |
252b5132 RH |
1601 | } |
1602 | ||
1603 | switch (r_type) | |
1604 | { | |
1605 | case R_68K_GOT8: | |
1606 | case R_68K_GOT16: | |
1607 | case R_68K_GOT32: | |
1608 | /* Relocation is to the address of the entry for this symbol | |
1609 | in the global offset table. */ | |
1610 | if (h != NULL | |
1611 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1612 | break; | |
1613 | /* Fall through. */ | |
1614 | case R_68K_GOT8O: | |
1615 | case R_68K_GOT16O: | |
1616 | case R_68K_GOT32O: | |
1617 | /* Relocation is the offset of the entry for this symbol in | |
1618 | the global offset table. */ | |
1619 | ||
1620 | { | |
1621 | bfd_vma off; | |
1622 | ||
1623 | if (sgot == NULL) | |
1624 | { | |
1625 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1626 | BFD_ASSERT (sgot != NULL); | |
1627 | } | |
1628 | ||
1629 | if (h != NULL) | |
1630 | { | |
a5ad465a AS |
1631 | bfd_boolean dyn; |
1632 | ||
252b5132 RH |
1633 | off = h->got.offset; |
1634 | BFD_ASSERT (off != (bfd_vma) -1); | |
1635 | ||
a5ad465a AS |
1636 | dyn = elf_hash_table (info)->dynamic_sections_created; |
1637 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
252b5132 | 1638 | || (info->shared |
a5ad465a AS |
1639 | && (info->symbolic |
1640 | || h->dynindx == -1 | |
f5385ebf AM |
1641 | || h->forced_local) |
1642 | && h->def_regular)) | |
252b5132 RH |
1643 | { |
1644 | /* This is actually a static link, or it is a | |
1645 | -Bsymbolic link and the symbol is defined | |
1646 | locally, or the symbol was forced to be local | |
1647 | because of a version file.. We must initialize | |
1648 | this entry in the global offset table. Since | |
1649 | the offset must always be a multiple of 4, we | |
1650 | use the least significant bit to record whether | |
1651 | we have initialized it already. | |
1652 | ||
1653 | When doing a dynamic link, we create a .rela.got | |
1654 | relocation entry to initialize the value. This | |
1655 | is done in the finish_dynamic_symbol routine. */ | |
1656 | if ((off & 1) != 0) | |
1657 | off &= ~1; | |
1658 | else | |
1659 | { | |
1660 | bfd_put_32 (output_bfd, relocation, | |
1661 | sgot->contents + off); | |
1662 | h->got.offset |= 1; | |
1663 | } | |
1664 | } | |
44f745a6 AS |
1665 | else |
1666 | unresolved_reloc = FALSE; | |
252b5132 RH |
1667 | } |
1668 | else | |
1669 | { | |
1670 | BFD_ASSERT (local_got_offsets != NULL | |
1671 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1672 | ||
1673 | off = local_got_offsets[r_symndx]; | |
1674 | ||
1675 | /* The offset must always be a multiple of 4. We use | |
1676 | the least significant bit to record whether we have | |
1677 | already generated the necessary reloc. */ | |
1678 | if ((off & 1) != 0) | |
1679 | off &= ~1; | |
1680 | else | |
1681 | { | |
1682 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1683 | ||
1684 | if (info->shared) | |
1685 | { | |
947216bf | 1686 | asection *s; |
252b5132 | 1687 | Elf_Internal_Rela outrel; |
947216bf | 1688 | bfd_byte *loc; |
252b5132 | 1689 | |
947216bf AM |
1690 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
1691 | BFD_ASSERT (s != NULL); | |
252b5132 RH |
1692 | |
1693 | outrel.r_offset = (sgot->output_section->vma | |
1694 | + sgot->output_offset | |
1695 | + off); | |
1696 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
1697 | outrel.r_addend = relocation; | |
947216bf AM |
1698 | loc = s->contents; |
1699 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1700 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1701 | } |
1702 | ||
1703 | local_got_offsets[r_symndx] |= 1; | |
1704 | } | |
1705 | } | |
1706 | ||
1707 | relocation = sgot->output_offset + off; | |
1708 | if (r_type == R_68K_GOT8O | |
1709 | || r_type == R_68K_GOT16O | |
1710 | || r_type == R_68K_GOT32O) | |
1711 | { | |
1712 | /* This relocation does not use the addend. */ | |
1713 | rel->r_addend = 0; | |
1714 | } | |
1715 | else | |
1716 | relocation += sgot->output_section->vma; | |
1717 | } | |
1718 | break; | |
1719 | ||
1720 | case R_68K_PLT8: | |
1721 | case R_68K_PLT16: | |
1722 | case R_68K_PLT32: | |
1723 | /* Relocation is to the entry for this symbol in the | |
1724 | procedure linkage table. */ | |
1725 | ||
1726 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1727 | without using the procedure linkage table. */ | |
1728 | if (h == NULL) | |
1729 | break; | |
1730 | ||
1731 | if (h->plt.offset == (bfd_vma) -1 | |
1732 | || !elf_hash_table (info)->dynamic_sections_created) | |
1733 | { | |
1734 | /* We didn't make a PLT entry for this symbol. This | |
1735 | happens when statically linking PIC code, or when | |
1736 | using -Bsymbolic. */ | |
1737 | break; | |
1738 | } | |
1739 | ||
1740 | if (splt == NULL) | |
1741 | { | |
1742 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1743 | BFD_ASSERT (splt != NULL); | |
1744 | } | |
1745 | ||
1746 | relocation = (splt->output_section->vma | |
1747 | + splt->output_offset | |
1748 | + h->plt.offset); | |
44f745a6 | 1749 | unresolved_reloc = FALSE; |
252b5132 RH |
1750 | break; |
1751 | ||
1752 | case R_68K_PLT8O: | |
1753 | case R_68K_PLT16O: | |
1754 | case R_68K_PLT32O: | |
1755 | /* Relocation is the offset of the entry for this symbol in | |
1756 | the procedure linkage table. */ | |
1757 | BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1); | |
1758 | ||
1759 | if (splt == NULL) | |
1760 | { | |
1761 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1762 | BFD_ASSERT (splt != NULL); | |
1763 | } | |
1764 | ||
1765 | relocation = h->plt.offset; | |
44f745a6 | 1766 | unresolved_reloc = FALSE; |
252b5132 RH |
1767 | |
1768 | /* This relocation does not use the addend. */ | |
1769 | rel->r_addend = 0; | |
1770 | ||
1771 | break; | |
1772 | ||
1773 | case R_68K_PC8: | |
1774 | case R_68K_PC16: | |
1775 | case R_68K_PC32: | |
b6152c34 AS |
1776 | if (h == NULL |
1777 | || (info->shared | |
f5385ebf | 1778 | && h->forced_local)) |
252b5132 RH |
1779 | break; |
1780 | /* Fall through. */ | |
1781 | case R_68K_8: | |
1782 | case R_68K_16: | |
1783 | case R_68K_32: | |
1784 | if (info->shared | |
ec338859 | 1785 | && r_symndx != 0 |
252b5132 | 1786 | && (input_section->flags & SEC_ALLOC) != 0 |
d2ff124f AS |
1787 | && (h == NULL |
1788 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1789 | || h->root.type != bfd_link_hash_undefweak) | |
252b5132 RH |
1790 | && ((r_type != R_68K_PC8 |
1791 | && r_type != R_68K_PC16 | |
1792 | && r_type != R_68K_PC32) | |
d2ff124f AS |
1793 | || (h != NULL |
1794 | && h->dynindx != -1 | |
1795 | && (!info->symbolic | |
f5385ebf | 1796 | || !h->def_regular)))) |
252b5132 RH |
1797 | { |
1798 | Elf_Internal_Rela outrel; | |
947216bf | 1799 | bfd_byte *loc; |
b34976b6 | 1800 | bfd_boolean skip, relocate; |
252b5132 RH |
1801 | |
1802 | /* When generating a shared object, these relocations | |
1803 | are copied into the output file to be resolved at run | |
1804 | time. */ | |
1805 | ||
b34976b6 AM |
1806 | skip = FALSE; |
1807 | relocate = FALSE; | |
252b5132 | 1808 | |
c629eae0 JJ |
1809 | outrel.r_offset = |
1810 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1811 | rel->r_offset); | |
1812 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1813 | skip = TRUE; |
0bb2d96a | 1814 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1815 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
1816 | outrel.r_offset += (input_section->output_section->vma |
1817 | + input_section->output_offset); | |
1818 | ||
1819 | if (skip) | |
0bb2d96a | 1820 | memset (&outrel, 0, sizeof outrel); |
252b5132 | 1821 | else if (h != NULL |
d2ff124f AS |
1822 | && h->dynindx != -1 |
1823 | && (r_type == R_68K_PC8 | |
1824 | || r_type == R_68K_PC16 | |
1825 | || r_type == R_68K_PC32 | |
1826 | || !info->shared | |
1827 | || !info->symbolic | |
f5385ebf | 1828 | || !h->def_regular)) |
252b5132 | 1829 | { |
252b5132 | 1830 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
d2ff124f | 1831 | outrel.r_addend = rel->r_addend; |
252b5132 RH |
1832 | } |
1833 | else | |
1834 | { | |
d2ff124f | 1835 | /* This symbol is local, or marked to become local. */ |
252b5132 RH |
1836 | if (r_type == R_68K_32) |
1837 | { | |
b34976b6 | 1838 | relocate = TRUE; |
252b5132 RH |
1839 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); |
1840 | outrel.r_addend = relocation + rel->r_addend; | |
1841 | } | |
1842 | else | |
1843 | { | |
1844 | long indx; | |
1845 | ||
8517fae7 | 1846 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
1847 | indx = 0; |
1848 | else if (sec == NULL || sec->owner == NULL) | |
1849 | { | |
1850 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1851 | return FALSE; |
252b5132 RH |
1852 | } |
1853 | else | |
1854 | { | |
1855 | asection *osec; | |
1856 | ||
1857 | osec = sec->output_section; | |
1858 | indx = elf_section_data (osec)->dynindx; | |
1859 | BFD_ASSERT (indx > 0); | |
1860 | } | |
1861 | ||
252b5132 RH |
1862 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
1863 | outrel.r_addend = relocation + rel->r_addend; | |
1864 | } | |
1865 | } | |
1866 | ||
d2ff124f AS |
1867 | sreloc = elf_section_data (input_section)->sreloc; |
1868 | if (sreloc == NULL) | |
1869 | abort (); | |
1870 | ||
947216bf AM |
1871 | loc = sreloc->contents; |
1872 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1873 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1874 | |
1875 | /* This reloc will be computed at runtime, so there's no | |
1876 | need to do anything now, except for R_68K_32 | |
1877 | relocations that have been turned into | |
1878 | R_68K_RELATIVE. */ | |
1879 | if (!relocate) | |
1880 | continue; | |
1881 | } | |
1882 | ||
1883 | break; | |
1884 | ||
1885 | case R_68K_GNU_VTINHERIT: | |
1886 | case R_68K_GNU_VTENTRY: | |
1887 | /* These are no-ops in the end. */ | |
1888 | continue; | |
1889 | ||
1890 | default: | |
1891 | break; | |
1892 | } | |
1893 | ||
44f745a6 AS |
1894 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
1895 | because such sections are not SEC_ALLOC and thus ld.so will | |
1896 | not process them. */ | |
1897 | if (unresolved_reloc | |
1898 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1899 | && h->def_dynamic)) |
44f745a6 AS |
1900 | { |
1901 | (*_bfd_error_handler) | |
843fe662 | 1902 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
1903 | input_bfd, |
1904 | input_section, | |
44f745a6 | 1905 | (long) rel->r_offset, |
843fe662 | 1906 | howto->name, |
44f745a6 AS |
1907 | h->root.root.string); |
1908 | return FALSE; | |
1909 | } | |
1910 | ||
252b5132 RH |
1911 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
1912 | contents, rel->r_offset, | |
1913 | relocation, rel->r_addend); | |
1914 | ||
1915 | if (r != bfd_reloc_ok) | |
1916 | { | |
44f745a6 AS |
1917 | const char *name; |
1918 | ||
1919 | if (h != NULL) | |
1920 | name = h->root.root.string; | |
1921 | else | |
252b5132 | 1922 | { |
44f745a6 AS |
1923 | name = bfd_elf_string_from_elf_section (input_bfd, |
1924 | symtab_hdr->sh_link, | |
1925 | sym->st_name); | |
1926 | if (name == NULL) | |
1927 | return FALSE; | |
1928 | if (*name == '\0') | |
1929 | name = bfd_section_name (input_bfd, sec); | |
1930 | } | |
252b5132 | 1931 | |
44f745a6 AS |
1932 | if (r == bfd_reloc_overflow) |
1933 | { | |
1934 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
1935 | (info, (h ? &h->root : NULL), name, howto->name, |
1936 | (bfd_vma) 0, input_bfd, input_section, | |
1937 | rel->r_offset))) | |
44f745a6 AS |
1938 | return FALSE; |
1939 | } | |
1940 | else | |
1941 | { | |
1942 | (*_bfd_error_handler) | |
d003868e AM |
1943 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
1944 | input_bfd, input_section, | |
44f745a6 AS |
1945 | (long) rel->r_offset, name, (int) r); |
1946 | return FALSE; | |
252b5132 RH |
1947 | } |
1948 | } | |
1949 | } | |
1950 | ||
b34976b6 | 1951 | return TRUE; |
252b5132 RH |
1952 | } |
1953 | ||
cc3e26be RS |
1954 | /* Install an M_68K_PC32 relocation against VALUE at offset OFFSET |
1955 | into section SEC. */ | |
1956 | ||
1957 | static void | |
1958 | elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value) | |
1959 | { | |
1960 | /* Make VALUE PC-relative. */ | |
1961 | value -= sec->output_section->vma + offset; | |
1962 | ||
1963 | /* Apply any in-place addend. */ | |
1964 | value += bfd_get_32 (sec->owner, sec->contents + offset); | |
1965 | ||
1966 | bfd_put_32 (sec->owner, value, sec->contents + offset); | |
1967 | } | |
1968 | ||
252b5132 RH |
1969 | /* Finish up dynamic symbol handling. We set the contents of various |
1970 | dynamic sections here. */ | |
1971 | ||
b34976b6 | 1972 | static bfd_boolean |
252b5132 RH |
1973 | elf_m68k_finish_dynamic_symbol (output_bfd, info, h, sym) |
1974 | bfd *output_bfd; | |
1975 | struct bfd_link_info *info; | |
1976 | struct elf_link_hash_entry *h; | |
1977 | Elf_Internal_Sym *sym; | |
1978 | { | |
1979 | bfd *dynobj; | |
1980 | ||
1981 | dynobj = elf_hash_table (info)->dynobj; | |
1982 | ||
1983 | if (h->plt.offset != (bfd_vma) -1) | |
1984 | { | |
cc3e26be | 1985 | const struct elf_m68k_plt_info *plt_info; |
252b5132 RH |
1986 | asection *splt; |
1987 | asection *sgot; | |
1988 | asection *srela; | |
1989 | bfd_vma plt_index; | |
1990 | bfd_vma got_offset; | |
1991 | Elf_Internal_Rela rela; | |
947216bf | 1992 | bfd_byte *loc; |
252b5132 RH |
1993 | |
1994 | /* This symbol has an entry in the procedure linkage table. Set | |
1995 | it up. */ | |
1996 | ||
1997 | BFD_ASSERT (h->dynindx != -1); | |
1998 | ||
cc3e26be | 1999 | plt_info = elf_m68k_hash_table (info)->plt_info; |
252b5132 RH |
2000 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
2001 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2002 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2003 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
2004 | ||
2005 | /* Get the index in the procedure linkage table which | |
2006 | corresponds to this symbol. This is the index of this symbol | |
2007 | in all the symbols for which we are making plt entries. The | |
2008 | first entry in the procedure linkage table is reserved. */ | |
cc3e26be | 2009 | plt_index = (h->plt.offset / plt_info->size) - 1; |
252b5132 RH |
2010 | |
2011 | /* Get the offset into the .got table of the entry that | |
2012 | corresponds to this function. Each .got entry is 4 bytes. | |
2013 | The first three are reserved. */ | |
2014 | got_offset = (plt_index + 3) * 4; | |
2015 | ||
cc3e26be RS |
2016 | memcpy (splt->contents + h->plt.offset, |
2017 | plt_info->symbol_entry, | |
2018 | plt_info->size); | |
2019 | ||
2020 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got, | |
2021 | (sgot->output_section->vma | |
2022 | + sgot->output_offset | |
2023 | + got_offset)); | |
252b5132 RH |
2024 | |
2025 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
cc3e26be RS |
2026 | splt->contents |
2027 | + h->plt.offset | |
2028 | + plt_info->symbol_resolve_entry + 2); | |
2029 | ||
2030 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt, | |
2031 | splt->output_section->vma); | |
252b5132 RH |
2032 | |
2033 | /* Fill in the entry in the global offset table. */ | |
2034 | bfd_put_32 (output_bfd, | |
2035 | (splt->output_section->vma | |
2036 | + splt->output_offset | |
2037 | + h->plt.offset | |
cc3e26be | 2038 | + plt_info->symbol_resolve_entry), |
252b5132 RH |
2039 | sgot->contents + got_offset); |
2040 | ||
2041 | /* Fill in the entry in the .rela.plt section. */ | |
2042 | rela.r_offset = (sgot->output_section->vma | |
2043 | + sgot->output_offset | |
2044 | + got_offset); | |
2045 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT); | |
2046 | rela.r_addend = 0; | |
947216bf AM |
2047 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
2048 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 | 2049 | |
f5385ebf | 2050 | if (!h->def_regular) |
252b5132 RH |
2051 | { |
2052 | /* Mark the symbol as undefined, rather than as defined in | |
2053 | the .plt section. Leave the value alone. */ | |
2054 | sym->st_shndx = SHN_UNDEF; | |
2055 | } | |
2056 | } | |
2057 | ||
2058 | if (h->got.offset != (bfd_vma) -1) | |
2059 | { | |
2060 | asection *sgot; | |
2061 | asection *srela; | |
2062 | Elf_Internal_Rela rela; | |
947216bf | 2063 | bfd_byte *loc; |
252b5132 RH |
2064 | |
2065 | /* This symbol has an entry in the global offset table. Set it | |
2066 | up. */ | |
2067 | ||
2068 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2069 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2070 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
2071 | ||
2072 | rela.r_offset = (sgot->output_section->vma | |
2073 | + sgot->output_offset | |
dc810e39 | 2074 | + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
2075 | |
2076 | /* If this is a -Bsymbolic link, and the symbol is defined | |
2077 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
2078 | the symbol was forced to be local because of a version file. | |
2079 | The entry in the global offset table will already have been | |
2080 | initialized in the relocate_section function. */ | |
2081 | if (info->shared | |
a5ad465a AS |
2082 | && (info->symbolic |
2083 | || h->dynindx == -1 | |
f5385ebf AM |
2084 | || h->forced_local) |
2085 | && h->def_regular) | |
252b5132 RH |
2086 | { |
2087 | rela.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
2088 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
2089 | (sgot->contents | |
dc810e39 | 2090 | + (h->got.offset &~ (bfd_vma) 1))); |
252b5132 RH |
2091 | } |
2092 | else | |
2093 | { | |
2094 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
dc810e39 | 2095 | sgot->contents + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
2096 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT); |
2097 | rela.r_addend = 0; | |
2098 | } | |
2099 | ||
947216bf AM |
2100 | loc = srela->contents; |
2101 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
2102 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
2103 | } |
2104 | ||
f5385ebf | 2105 | if (h->needs_copy) |
252b5132 RH |
2106 | { |
2107 | asection *s; | |
2108 | Elf_Internal_Rela rela; | |
947216bf | 2109 | bfd_byte *loc; |
252b5132 RH |
2110 | |
2111 | /* This symbol needs a copy reloc. Set it up. */ | |
2112 | ||
2113 | BFD_ASSERT (h->dynindx != -1 | |
2114 | && (h->root.type == bfd_link_hash_defined | |
2115 | || h->root.type == bfd_link_hash_defweak)); | |
2116 | ||
2117 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
2118 | ".rela.bss"); | |
2119 | BFD_ASSERT (s != NULL); | |
2120 | ||
2121 | rela.r_offset = (h->root.u.def.value | |
2122 | + h->root.u.def.section->output_section->vma | |
2123 | + h->root.u.def.section->output_offset); | |
2124 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY); | |
2125 | rela.r_addend = 0; | |
947216bf AM |
2126 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
2127 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
2128 | } |
2129 | ||
2130 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
2131 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 | 2132 | || h == elf_hash_table (info)->hgot) |
252b5132 RH |
2133 | sym->st_shndx = SHN_ABS; |
2134 | ||
b34976b6 | 2135 | return TRUE; |
252b5132 RH |
2136 | } |
2137 | ||
2138 | /* Finish up the dynamic sections. */ | |
2139 | ||
b34976b6 | 2140 | static bfd_boolean |
252b5132 RH |
2141 | elf_m68k_finish_dynamic_sections (output_bfd, info) |
2142 | bfd *output_bfd; | |
2143 | struct bfd_link_info *info; | |
2144 | { | |
2145 | bfd *dynobj; | |
2146 | asection *sgot; | |
2147 | asection *sdyn; | |
2148 | ||
2149 | dynobj = elf_hash_table (info)->dynobj; | |
2150 | ||
2151 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2152 | BFD_ASSERT (sgot != NULL); | |
2153 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2154 | ||
2155 | if (elf_hash_table (info)->dynamic_sections_created) | |
2156 | { | |
2157 | asection *splt; | |
2158 | Elf32_External_Dyn *dyncon, *dynconend; | |
2159 | ||
2160 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2161 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2162 | ||
2163 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 2164 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
2165 | for (; dyncon < dynconend; dyncon++) |
2166 | { | |
2167 | Elf_Internal_Dyn dyn; | |
2168 | const char *name; | |
2169 | asection *s; | |
2170 | ||
2171 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2172 | ||
2173 | switch (dyn.d_tag) | |
2174 | { | |
2175 | default: | |
2176 | break; | |
2177 | ||
2178 | case DT_PLTGOT: | |
2179 | name = ".got"; | |
2180 | goto get_vma; | |
2181 | case DT_JMPREL: | |
2182 | name = ".rela.plt"; | |
2183 | get_vma: | |
2184 | s = bfd_get_section_by_name (output_bfd, name); | |
2185 | BFD_ASSERT (s != NULL); | |
2186 | dyn.d_un.d_ptr = s->vma; | |
2187 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2188 | break; | |
2189 | ||
2190 | case DT_PLTRELSZ: | |
2191 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2192 | BFD_ASSERT (s != NULL); | |
eea6121a | 2193 | dyn.d_un.d_val = s->size; |
252b5132 RH |
2194 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2195 | break; | |
2196 | ||
2197 | case DT_RELASZ: | |
2198 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2199 | not be included in the overall relocs (DT_RELA). | |
2200 | Therefore, we override the DT_RELASZ entry here to | |
2201 | make it not include the JMPREL relocs. Since the | |
2202 | linker script arranges for .rela.plt to follow all | |
2203 | other relocation sections, we don't have to worry | |
2204 | about changing the DT_RELA entry. */ | |
2205 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2206 | if (s != NULL) | |
eea6121a | 2207 | dyn.d_un.d_val -= s->size; |
252b5132 RH |
2208 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2209 | break; | |
2210 | } | |
2211 | } | |
2212 | ||
2213 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2214 | if (splt->size > 0) |
252b5132 | 2215 | { |
cc3e26be RS |
2216 | const struct elf_m68k_plt_info *plt_info; |
2217 | ||
2218 | plt_info = elf_m68k_hash_table (info)->plt_info; | |
2219 | memcpy (splt->contents, plt_info->plt0_entry, plt_info->size); | |
2220 | ||
2221 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4, | |
2222 | (sgot->output_section->vma | |
2223 | + sgot->output_offset | |
2224 | + 4)); | |
2225 | ||
2226 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8, | |
2227 | (sgot->output_section->vma | |
2228 | + sgot->output_offset | |
2229 | + 8)); | |
2230 | ||
2231 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
2232 | = plt_info->size; | |
252b5132 | 2233 | } |
252b5132 RH |
2234 | } |
2235 | ||
2236 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2237 | if (sgot->size > 0) |
252b5132 RH |
2238 | { |
2239 | if (sdyn == NULL) | |
2240 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2241 | else | |
2242 | bfd_put_32 (output_bfd, | |
2243 | sdyn->output_section->vma + sdyn->output_offset, | |
2244 | sgot->contents); | |
2245 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2246 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2247 | } | |
2248 | ||
2249 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2250 | ||
b34976b6 | 2251 | return TRUE; |
252b5132 RH |
2252 | } |
2253 | ||
0752970e NC |
2254 | /* Given a .data section and a .emreloc in-memory section, store |
2255 | relocation information into the .emreloc section which can be | |
2256 | used at runtime to relocate the section. This is called by the | |
2257 | linker when the --embedded-relocs switch is used. This is called | |
2258 | after the add_symbols entry point has been called for all the | |
2259 | objects, and before the final_link entry point is called. */ | |
2260 | ||
b34976b6 | 2261 | bfd_boolean |
0752970e NC |
2262 | bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) |
2263 | bfd *abfd; | |
2264 | struct bfd_link_info *info; | |
2265 | asection *datasec; | |
2266 | asection *relsec; | |
2267 | char **errmsg; | |
2268 | { | |
2269 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc AM |
2270 | Elf_Internal_Sym *isymbuf = NULL; |
2271 | Elf_Internal_Rela *internal_relocs = NULL; | |
0752970e NC |
2272 | Elf_Internal_Rela *irel, *irelend; |
2273 | bfd_byte *p; | |
dc810e39 | 2274 | bfd_size_type amt; |
0752970e | 2275 | |
1049f94e | 2276 | BFD_ASSERT (! info->relocatable); |
0752970e NC |
2277 | |
2278 | *errmsg = NULL; | |
2279 | ||
2280 | if (datasec->reloc_count == 0) | |
b34976b6 | 2281 | return TRUE; |
0752970e NC |
2282 | |
2283 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
9ad5cbcf | 2284 | |
0752970e | 2285 | /* Get a copy of the native relocations. */ |
45d6a902 | 2286 | internal_relocs = (_bfd_elf_link_read_relocs |
0752970e NC |
2287 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
2288 | info->keep_memory)); | |
2289 | if (internal_relocs == NULL) | |
2290 | goto error_return; | |
0752970e | 2291 | |
dc810e39 AM |
2292 | amt = (bfd_size_type) datasec->reloc_count * 12; |
2293 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
0752970e NC |
2294 | if (relsec->contents == NULL) |
2295 | goto error_return; | |
2296 | ||
2297 | p = relsec->contents; | |
2298 | ||
2299 | irelend = internal_relocs + datasec->reloc_count; | |
2300 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
2301 | { | |
2302 | asection *targetsec; | |
2303 | ||
2304 | /* We are going to write a four byte longword into the runtime | |
2305 | reloc section. The longword will be the address in the data | |
2306 | section which must be relocated. It is followed by the name | |
2307 | of the target section NUL-padded or truncated to 8 | |
2308 | characters. */ | |
2309 | ||
2310 | /* We can only relocate absolute longword relocs at run time. */ | |
2311 | if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32) | |
2312 | { | |
2313 | *errmsg = _("unsupported reloc type"); | |
2314 | bfd_set_error (bfd_error_bad_value); | |
2315 | goto error_return; | |
2316 | } | |
2317 | ||
2318 | /* Get the target section referred to by the reloc. */ | |
2319 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2320 | { | |
0752970e | 2321 | /* A local symbol. */ |
6cdc0ccc AM |
2322 | Elf_Internal_Sym *isym; |
2323 | ||
2324 | /* Read this BFD's local symbols if we haven't done so already. */ | |
2325 | if (isymbuf == NULL) | |
2326 | { | |
2327 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2328 | if (isymbuf == NULL) | |
2329 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2330 | symtab_hdr->sh_info, 0, | |
2331 | NULL, NULL, NULL); | |
2332 | if (isymbuf == NULL) | |
2333 | goto error_return; | |
2334 | } | |
0752970e | 2335 | |
6cdc0ccc AM |
2336 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
2337 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
0752970e NC |
2338 | } |
2339 | else | |
2340 | { | |
2341 | unsigned long indx; | |
2342 | struct elf_link_hash_entry *h; | |
2343 | ||
2344 | /* An external symbol. */ | |
2345 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2346 | h = elf_sym_hashes (abfd)[indx]; | |
2347 | BFD_ASSERT (h != NULL); | |
2348 | if (h->root.type == bfd_link_hash_defined | |
2349 | || h->root.type == bfd_link_hash_defweak) | |
2350 | targetsec = h->root.u.def.section; | |
2351 | else | |
2352 | targetsec = NULL; | |
2353 | } | |
2354 | ||
2355 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
2356 | memset (p + 4, 0, 8); | |
2357 | if (targetsec != NULL) | |
f075ee0c | 2358 | strncpy ((char *) p + 4, targetsec->output_section->name, 8); |
0752970e | 2359 | } |
c3668558 | 2360 | |
6cdc0ccc AM |
2361 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
2362 | free (isymbuf); | |
2363 | if (internal_relocs != NULL | |
2364 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2365 | free (internal_relocs); | |
b34976b6 | 2366 | return TRUE; |
0752970e NC |
2367 | |
2368 | error_return: | |
6cdc0ccc AM |
2369 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
2370 | free (isymbuf); | |
2371 | if (internal_relocs != NULL | |
2372 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2373 | free (internal_relocs); | |
b34976b6 | 2374 | return FALSE; |
0752970e NC |
2375 | } |
2376 | ||
aa91b392 | 2377 | static enum elf_reloc_type_class |
f51e552e AM |
2378 | elf32_m68k_reloc_type_class (rela) |
2379 | const Elf_Internal_Rela *rela; | |
aa91b392 | 2380 | { |
f51e552e | 2381 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
aa91b392 AS |
2382 | { |
2383 | case R_68K_RELATIVE: | |
2384 | return reloc_class_relative; | |
2385 | case R_68K_JMP_SLOT: | |
2386 | return reloc_class_plt; | |
2387 | case R_68K_COPY: | |
2388 | return reloc_class_copy; | |
2389 | default: | |
2390 | return reloc_class_normal; | |
2391 | } | |
2392 | } | |
2393 | ||
1715e0e3 AS |
2394 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
2395 | or (bfd_vma) -1 if it should not be included. */ | |
2396 | ||
2397 | static bfd_vma | |
2398 | elf_m68k_plt_sym_val (bfd_vma i, const asection *plt, | |
2399 | const arelent *rel ATTRIBUTE_UNUSED) | |
2400 | { | |
cc3e26be | 2401 | return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size; |
1715e0e3 AS |
2402 | } |
2403 | ||
252b5132 RH |
2404 | #define TARGET_BIG_SYM bfd_elf32_m68k_vec |
2405 | #define TARGET_BIG_NAME "elf32-m68k" | |
2406 | #define ELF_MACHINE_CODE EM_68K | |
2407 | #define ELF_MAXPAGESIZE 0x2000 | |
2408 | #define elf_backend_create_dynamic_sections \ | |
2409 | _bfd_elf_create_dynamic_sections | |
2410 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2411 | elf_m68k_link_hash_table_create | |
c152c796 | 2412 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
252b5132 RH |
2413 | |
2414 | #define elf_backend_check_relocs elf_m68k_check_relocs | |
cc3e26be RS |
2415 | #define elf_backend_always_size_sections \ |
2416 | elf_m68k_always_size_sections | |
252b5132 RH |
2417 | #define elf_backend_adjust_dynamic_symbol \ |
2418 | elf_m68k_adjust_dynamic_symbol | |
2419 | #define elf_backend_size_dynamic_sections \ | |
2420 | elf_m68k_size_dynamic_sections | |
2421 | #define elf_backend_relocate_section elf_m68k_relocate_section | |
2422 | #define elf_backend_finish_dynamic_symbol \ | |
2423 | elf_m68k_finish_dynamic_symbol | |
2424 | #define elf_backend_finish_dynamic_sections \ | |
2425 | elf_m68k_finish_dynamic_sections | |
2426 | #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook | |
2427 | #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook | |
9e1281c7 CM |
2428 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
2429 | elf32_m68k_merge_private_bfd_data | |
2430 | #define bfd_elf32_bfd_set_private_flags \ | |
2431 | elf32_m68k_set_private_flags | |
2432 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2433 | elf32_m68k_print_private_bfd_data | |
aa91b392 | 2434 | #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class |
1715e0e3 | 2435 | #define elf_backend_plt_sym_val elf_m68k_plt_sym_val |
266abb8f | 2436 | #define elf_backend_object_p elf32_m68k_object_p |
9e1281c7 | 2437 | |
252b5132 | 2438 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 2439 | #define elf_backend_can_refcount 1 |
252b5132 RH |
2440 | #define elf_backend_want_got_plt 1 |
2441 | #define elf_backend_plt_readonly 1 | |
2442 | #define elf_backend_want_plt_sym 0 | |
2443 | #define elf_backend_got_header_size 12 | |
b491616a | 2444 | #define elf_backend_rela_normal 1 |
252b5132 RH |
2445 | |
2446 | #include "elf32-target.h" |