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, |
ab96bf03 | 3 | 2004, 2005, 2006, 2007 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 | ||
157090f7 AM |
177 | static reloc_howto_type * |
178 | reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
179 | { | |
180 | unsigned int i; | |
181 | ||
182 | for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++) | |
183 | if (howto_table[i].name != NULL | |
184 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
185 | return &howto_table[i]; | |
186 | ||
187 | return NULL; | |
188 | } | |
189 | ||
252b5132 | 190 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup |
157090f7 | 191 | #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup |
252b5132 | 192 | #define ELF_ARCH bfd_arch_m68k |
252b5132 RH |
193 | \f |
194 | /* Functions for the m68k ELF linker. */ | |
195 | ||
196 | /* The name of the dynamic interpreter. This is put in the .interp | |
197 | section. */ | |
198 | ||
199 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
200 | ||
cc3e26be RS |
201 | /* Describes one of the various PLT styles. */ |
202 | ||
203 | struct elf_m68k_plt_info | |
204 | { | |
205 | /* The size of each PLT entry. */ | |
206 | bfd_vma size; | |
207 | ||
208 | /* The template for the first PLT entry. */ | |
209 | const bfd_byte *plt0_entry; | |
210 | ||
211 | /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations. | |
212 | The comments by each member indicate the value that the relocation | |
213 | is against. */ | |
214 | struct { | |
215 | unsigned int got4; /* .got + 4 */ | |
216 | unsigned int got8; /* .got + 8 */ | |
217 | } plt0_relocs; | |
218 | ||
219 | /* The template for a symbol's PLT entry. */ | |
220 | const bfd_byte *symbol_entry; | |
221 | ||
222 | /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations. | |
223 | The comments by each member indicate the value that the relocation | |
224 | is against. */ | |
225 | struct { | |
226 | unsigned int got; /* the symbol's .got.plt entry */ | |
227 | unsigned int plt; /* .plt */ | |
228 | } symbol_relocs; | |
229 | ||
230 | /* The offset of the resolver stub from the start of SYMBOL_ENTRY. | |
231 | The stub starts with "move.l #relocoffset,%d0". */ | |
232 | bfd_vma symbol_resolve_entry; | |
233 | }; | |
234 | ||
252b5132 RH |
235 | /* The size in bytes of an entry in the procedure linkage table. */ |
236 | ||
237 | #define PLT_ENTRY_SIZE 20 | |
238 | ||
239 | /* The first entry in a procedure linkage table looks like this. See | |
240 | the SVR4 ABI m68k supplement to see how this works. */ | |
241 | ||
242 | static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] = | |
243 | { | |
244 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ | |
cc3e26be | 245 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
252b5132 | 246 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */ |
cc3e26be | 247 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
252b5132 RH |
248 | 0, 0, 0, 0 /* pad out to 20 bytes. */ |
249 | }; | |
250 | ||
251 | /* Subsequent entries in a procedure linkage table look like this. */ | |
252 | ||
253 | static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] = | |
254 | { | |
255 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */ | |
cc3e26be | 256 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
252b5132 | 257 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
cc3e26be | 258 | 0, 0, 0, 0, /* + reloc index */ |
252b5132 | 259 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 260 | 0, 0, 0, 0 /* + .plt - . */ |
252b5132 RH |
261 | }; |
262 | ||
cc3e26be RS |
263 | static const struct elf_m68k_plt_info elf_m68k_plt_info = { |
264 | PLT_ENTRY_SIZE, | |
265 | elf_m68k_plt0_entry, { 4, 12 }, | |
266 | elf_m68k_plt_entry, { 4, 16 }, 8 | |
267 | }; | |
238d258f | 268 | |
cc3e26be | 269 | #define ISAB_PLT_ENTRY_SIZE 24 |
238d258f | 270 | |
cc3e26be | 271 | static const bfd_byte elf_isab_plt0_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 272 | { |
cc3e26be RS |
273 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
274 | 0, 0, 0, 0, /* + (.got + 4) - . */ | |
275 | 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */ | |
276 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
277 | 0, 0, 0, 0, /* + (.got + 8) - . */ | |
278 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
238d258f NC |
279 | 0x4e, 0xd0, /* jmp (%a0) */ |
280 | 0x4e, 0x71 /* nop */ | |
281 | }; | |
282 | ||
283 | /* Subsequent entries in a procedure linkage table look like this. */ | |
284 | ||
cc3e26be | 285 | static const bfd_byte elf_isab_plt_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 286 | { |
cc3e26be RS |
287 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
288 | 0, 0, 0, 0, /* + (.got.plt entry) - . */ | |
289 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
238d258f NC |
290 | 0x4e, 0xd0, /* jmp (%a0) */ |
291 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
cc3e26be | 292 | 0, 0, 0, 0, /* + reloc index */ |
238d258f | 293 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 294 | 0, 0, 0, 0 /* + .plt - . */ |
238d258f NC |
295 | }; |
296 | ||
cc3e26be RS |
297 | static const struct elf_m68k_plt_info elf_isab_plt_info = { |
298 | ISAB_PLT_ENTRY_SIZE, | |
299 | elf_isab_plt0_entry, { 2, 12 }, | |
300 | elf_isab_plt_entry, { 2, 20 }, 12 | |
301 | }; | |
9e1281c7 | 302 | |
9a2e615a NS |
303 | #define ISAC_PLT_ENTRY_SIZE 24 |
304 | ||
305 | static const bfd_byte elf_isac_plt0_entry[ISAC_PLT_ENTRY_SIZE] = | |
306 | { | |
307 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
308 | 0, 0, 0, 0, /* replaced with .got + 4 - . */ | |
309 | 0x2e, 0xbb, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),(%sp) */ | |
310 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
311 | 0, 0, 0, 0, /* replaced with .got + 8 - . */ | |
312 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
313 | 0x4e, 0xd0, /* jmp (%a0) */ | |
314 | 0x4e, 0x71 /* nop */ | |
315 | }; | |
316 | ||
317 | /* Subsequent entries in a procedure linkage table look like this. */ | |
318 | ||
319 | static const bfd_byte elf_isac_plt_entry[ISAC_PLT_ENTRY_SIZE] = | |
320 | { | |
321 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
322 | 0, 0, 0, 0, /* replaced with (.got entry) - . */ | |
323 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
324 | 0x4e, 0xd0, /* jmp (%a0) */ | |
325 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
326 | 0, 0, 0, 0, /* replaced with offset into relocation table */ | |
327 | 0x61, 0xff, /* bsr.l .plt */ | |
328 | 0, 0, 0, 0 /* replaced with .plt - . */ | |
329 | }; | |
330 | ||
331 | static const struct elf_m68k_plt_info elf_isac_plt_info = { | |
332 | ISAC_PLT_ENTRY_SIZE, | |
333 | elf_isac_plt0_entry, { 2, 12}, | |
334 | elf_isac_plt_entry, { 2, 20 }, 12 | |
335 | }; | |
336 | ||
cc3e26be | 337 | #define CPU32_PLT_ENTRY_SIZE 24 |
9e1281c7 | 338 | /* Procedure linkage table entries for the cpu32 */ |
cc3e26be | 339 | static const bfd_byte elf_cpu32_plt0_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 340 | { |
6091b433 | 341 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ |
cc3e26be | 342 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
6091b433 | 343 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
cc3e26be | 344 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
6091b433 | 345 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 CM |
346 | 0, 0, 0, 0, /* pad out to 24 bytes. */ |
347 | 0, 0 | |
348 | }; | |
349 | ||
cc3e26be | 350 | static const bfd_byte elf_cpu32_plt_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 351 | { |
1ca42bad | 352 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
cc3e26be | 353 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
1ca42bad | 354 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 | 355 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
cc3e26be | 356 | 0, 0, 0, 0, /* + reloc index */ |
9e1281c7 | 357 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 358 | 0, 0, 0, 0, /* + .plt - . */ |
9e1281c7 CM |
359 | 0, 0 |
360 | }; | |
361 | ||
cc3e26be RS |
362 | static const struct elf_m68k_plt_info elf_cpu32_plt_info = { |
363 | CPU32_PLT_ENTRY_SIZE, | |
364 | elf_cpu32_plt0_entry, { 4, 12 }, | |
365 | elf_cpu32_plt_entry, { 4, 18 }, 10 | |
366 | }; | |
367 | ||
252b5132 RH |
368 | /* The m68k linker needs to keep track of the number of relocs that it |
369 | decides to copy in check_relocs for each symbol. This is so that it | |
370 | can discard PC relative relocs if it doesn't need them when linking | |
371 | with -Bsymbolic. We store the information in a field extending the | |
372 | regular ELF linker hash table. */ | |
373 | ||
374 | /* This structure keeps track of the number of PC relative relocs we have | |
375 | copied for a given symbol. */ | |
376 | ||
377 | struct elf_m68k_pcrel_relocs_copied | |
378 | { | |
379 | /* Next section. */ | |
380 | struct elf_m68k_pcrel_relocs_copied *next; | |
381 | /* A section in dynobj. */ | |
382 | asection *section; | |
383 | /* Number of relocs copied in this section. */ | |
384 | bfd_size_type count; | |
385 | }; | |
386 | ||
387 | /* m68k ELF linker hash entry. */ | |
388 | ||
389 | struct elf_m68k_link_hash_entry | |
390 | { | |
391 | struct elf_link_hash_entry root; | |
392 | ||
393 | /* Number of PC relative relocs copied for this symbol. */ | |
394 | struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied; | |
395 | }; | |
396 | ||
0cca5f05 AS |
397 | #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent)) |
398 | ||
252b5132 RH |
399 | /* m68k ELF linker hash table. */ |
400 | ||
401 | struct elf_m68k_link_hash_table | |
402 | { | |
403 | struct elf_link_hash_table root; | |
b6152c34 AS |
404 | |
405 | /* Small local sym to section mapping cache. */ | |
406 | struct sym_sec_cache sym_sec; | |
cc3e26be RS |
407 | |
408 | /* The PLT format used by this link, or NULL if the format has not | |
409 | yet been chosen. */ | |
410 | const struct elf_m68k_plt_info *plt_info; | |
252b5132 RH |
411 | }; |
412 | ||
252b5132 RH |
413 | /* Get the m68k ELF linker hash table from a link_info structure. */ |
414 | ||
415 | #define elf_m68k_hash_table(p) \ | |
416 | ((struct elf_m68k_link_hash_table *) (p)->hash) | |
417 | ||
418 | /* Create an entry in an m68k ELF linker hash table. */ | |
419 | ||
420 | static struct bfd_hash_entry * | |
421 | elf_m68k_link_hash_newfunc (entry, table, string) | |
422 | struct bfd_hash_entry *entry; | |
423 | struct bfd_hash_table *table; | |
424 | const char *string; | |
425 | { | |
0cca5f05 | 426 | struct bfd_hash_entry *ret = entry; |
252b5132 RH |
427 | |
428 | /* Allocate the structure if it has not already been allocated by a | |
429 | subclass. */ | |
0cca5f05 AS |
430 | if (ret == NULL) |
431 | ret = bfd_hash_allocate (table, | |
432 | sizeof (struct elf_m68k_link_hash_entry)); | |
433 | if (ret == NULL) | |
434 | return ret; | |
252b5132 RH |
435 | |
436 | /* Call the allocation method of the superclass. */ | |
0cca5f05 AS |
437 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); |
438 | if (ret != NULL) | |
439 | elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
252b5132 | 440 | |
0cca5f05 | 441 | return ret; |
252b5132 RH |
442 | } |
443 | ||
444 | /* Create an m68k ELF linker hash table. */ | |
445 | ||
446 | static struct bfd_link_hash_table * | |
447 | elf_m68k_link_hash_table_create (abfd) | |
448 | bfd *abfd; | |
449 | { | |
450 | struct elf_m68k_link_hash_table *ret; | |
dc810e39 | 451 | bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table); |
252b5132 | 452 | |
e2d34d7d | 453 | ret = (struct elf_m68k_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
454 | if (ret == (struct elf_m68k_link_hash_table *) NULL) |
455 | return NULL; | |
456 | ||
66eb6687 AM |
457 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
458 | elf_m68k_link_hash_newfunc, | |
459 | sizeof (struct elf_m68k_link_hash_entry))) | |
252b5132 | 460 | { |
e2d34d7d | 461 | free (ret); |
252b5132 RH |
462 | return NULL; |
463 | } | |
464 | ||
b6152c34 | 465 | ret->sym_sec.abfd = NULL; |
cc3e26be | 466 | ret->plt_info = NULL; |
b6152c34 | 467 | |
252b5132 RH |
468 | return &ret->root.root; |
469 | } | |
470 | ||
266abb8f NS |
471 | /* Set the right machine number. */ |
472 | ||
473 | static bfd_boolean | |
474 | elf32_m68k_object_p (bfd *abfd) | |
475 | { | |
476 | unsigned int mach = 0; | |
477 | unsigned features = 0; | |
478 | flagword eflags = elf_elfheader (abfd)->e_flags; | |
479 | ||
425c6cb0 | 480 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) |
266abb8f | 481 | features |= m68000; |
425c6cb0 | 482 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) |
3bdcfdf4 KH |
483 | features |= cpu32; |
484 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
485 | features |= fido_a; | |
425c6cb0 | 486 | else |
266abb8f | 487 | { |
c694fd50 | 488 | switch (eflags & EF_M68K_CF_ISA_MASK) |
266abb8f | 489 | { |
c694fd50 | 490 | case EF_M68K_CF_ISA_A_NODIV: |
266abb8f NS |
491 | features |= mcfisa_a; |
492 | break; | |
c694fd50 | 493 | case EF_M68K_CF_ISA_A: |
0b2e31dc NS |
494 | features |= mcfisa_a|mcfhwdiv; |
495 | break; | |
c694fd50 | 496 | case EF_M68K_CF_ISA_A_PLUS: |
0b2e31dc NS |
497 | features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp; |
498 | break; | |
c694fd50 | 499 | case EF_M68K_CF_ISA_B_NOUSP: |
0b2e31dc NS |
500 | features |= mcfisa_a|mcfisa_b|mcfhwdiv; |
501 | break; | |
c694fd50 | 502 | case EF_M68K_CF_ISA_B: |
0b2e31dc NS |
503 | features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp; |
504 | break; | |
9a2e615a NS |
505 | case EF_M68K_CF_ISA_C: |
506 | features |= mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp; | |
507 | break; | |
266abb8f | 508 | } |
c694fd50 | 509 | switch (eflags & EF_M68K_CF_MAC_MASK) |
266abb8f | 510 | { |
c694fd50 | 511 | case EF_M68K_CF_MAC: |
266abb8f NS |
512 | features |= mcfmac; |
513 | break; | |
c694fd50 | 514 | case EF_M68K_CF_EMAC: |
266abb8f NS |
515 | features |= mcfemac; |
516 | break; | |
517 | } | |
c694fd50 | 518 | if (eflags & EF_M68K_CF_FLOAT) |
266abb8f NS |
519 | features |= cfloat; |
520 | } | |
521 | ||
522 | mach = bfd_m68k_features_to_mach (features); | |
523 | bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach); | |
524 | ||
525 | return TRUE; | |
526 | } | |
527 | ||
ae9a127f | 528 | /* Keep m68k-specific flags in the ELF header. */ |
b34976b6 | 529 | static bfd_boolean |
9e1281c7 CM |
530 | elf32_m68k_set_private_flags (abfd, flags) |
531 | bfd *abfd; | |
532 | flagword flags; | |
533 | { | |
534 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
535 | elf_flags_init (abfd) = TRUE; |
536 | return TRUE; | |
9e1281c7 CM |
537 | } |
538 | ||
9e1281c7 CM |
539 | /* Merge backend specific data from an object file to the output |
540 | object file when linking. */ | |
b34976b6 | 541 | static bfd_boolean |
9e1281c7 CM |
542 | elf32_m68k_merge_private_bfd_data (ibfd, obfd) |
543 | bfd *ibfd; | |
544 | bfd *obfd; | |
545 | { | |
546 | flagword out_flags; | |
547 | flagword in_flags; | |
a9d34880 RS |
548 | flagword out_isa; |
549 | flagword in_isa; | |
550 | const bfd_arch_info_type *arch_info; | |
266abb8f | 551 | |
9e1281c7 CM |
552 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
553 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
266abb8f NS |
554 | return FALSE; |
555 | ||
a9d34880 RS |
556 | /* Get the merged machine. This checks for incompatibility between |
557 | Coldfire & non-Coldfire flags, incompability between different | |
558 | Coldfire ISAs, and incompability between different MAC types. */ | |
559 | arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE); | |
560 | if (!arch_info) | |
561 | return FALSE; | |
9e1281c7 | 562 | |
a9d34880 RS |
563 | bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach); |
564 | ||
565 | in_flags = elf_elfheader (ibfd)->e_flags; | |
9e1281c7 CM |
566 | if (!elf_flags_init (obfd)) |
567 | { | |
b34976b6 | 568 | elf_flags_init (obfd) = TRUE; |
266abb8f NS |
569 | out_flags = in_flags; |
570 | } | |
571 | else | |
572 | { | |
a9d34880 | 573 | out_flags = elf_elfheader (obfd)->e_flags; |
425c6cb0 KH |
574 | unsigned int variant_mask; |
575 | ||
576 | if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) | |
577 | variant_mask = 0; | |
578 | else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) | |
3bdcfdf4 KH |
579 | variant_mask = 0; |
580 | else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
581 | variant_mask = 0; | |
425c6cb0 KH |
582 | else |
583 | variant_mask = EF_M68K_CF_ISA_MASK; | |
584 | ||
585 | in_isa = (in_flags & variant_mask); | |
586 | out_isa = (out_flags & variant_mask); | |
a9d34880 RS |
587 | if (in_isa > out_isa) |
588 | out_flags ^= in_isa ^ out_isa; | |
3bdcfdf4 KH |
589 | if (((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32 |
590 | && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
591 | || ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO | |
592 | && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)) | |
593 | out_flags = EF_M68K_FIDO; | |
594 | else | |
a9d34880 | 595 | out_flags |= in_flags ^ in_isa; |
9e1281c7 | 596 | } |
266abb8f | 597 | elf_elfheader (obfd)->e_flags = out_flags; |
9e1281c7 | 598 | |
b34976b6 | 599 | return TRUE; |
9e1281c7 CM |
600 | } |
601 | ||
ae9a127f | 602 | /* Display the flags field. */ |
b34976b6 | 603 | static bfd_boolean |
9e1281c7 CM |
604 | elf32_m68k_print_private_bfd_data (abfd, ptr) |
605 | bfd *abfd; | |
606 | PTR ptr; | |
607 | { | |
608 | FILE *file = (FILE *) ptr; | |
266abb8f | 609 | flagword eflags = elf_elfheader (abfd)->e_flags; |
9e1281c7 CM |
610 | |
611 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
612 | ||
613 | /* Print normal ELF private data. */ | |
614 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
615 | ||
616 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
617 | ||
618 | /* xgettext:c-format */ | |
517662d4 | 619 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
9e1281c7 | 620 | |
425c6cb0 | 621 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) |
266abb8f | 622 | fprintf (file, " [m68000]"); |
425c6cb0 | 623 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) |
3bdcfdf4 KH |
624 | fprintf (file, " [cpu32]"); |
625 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
626 | fprintf (file, " [fido]"); | |
425c6cb0 | 627 | else |
266abb8f | 628 | { |
425c6cb0 KH |
629 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CFV4E) |
630 | fprintf (file, " [cfv4e]"); | |
631 | ||
632 | if (eflags & EF_M68K_CF_ISA_MASK) | |
266abb8f | 633 | { |
425c6cb0 KH |
634 | char const *isa = _("unknown"); |
635 | char const *mac = _("unknown"); | |
636 | char const *additional = ""; | |
637 | ||
638 | switch (eflags & EF_M68K_CF_ISA_MASK) | |
639 | { | |
640 | case EF_M68K_CF_ISA_A_NODIV: | |
641 | isa = "A"; | |
642 | additional = " [nodiv]"; | |
643 | break; | |
644 | case EF_M68K_CF_ISA_A: | |
645 | isa = "A"; | |
646 | break; | |
647 | case EF_M68K_CF_ISA_A_PLUS: | |
648 | isa = "A+"; | |
649 | break; | |
650 | case EF_M68K_CF_ISA_B_NOUSP: | |
651 | isa = "B"; | |
652 | additional = " [nousp]"; | |
653 | break; | |
654 | case EF_M68K_CF_ISA_B: | |
655 | isa = "B"; | |
656 | break; | |
9a2e615a NS |
657 | case EF_M68K_CF_ISA_C: |
658 | isa = "C"; | |
659 | break; | |
425c6cb0 KH |
660 | } |
661 | fprintf (file, " [isa %s]%s", isa, additional); | |
662 | if (eflags & EF_M68K_CF_FLOAT) | |
663 | fprintf (file, " [float]"); | |
664 | switch (eflags & EF_M68K_CF_MAC_MASK) | |
665 | { | |
666 | case 0: | |
667 | mac = NULL; | |
668 | break; | |
669 | case EF_M68K_CF_MAC: | |
670 | mac = "mac"; | |
671 | break; | |
672 | case EF_M68K_CF_EMAC: | |
673 | mac = "emac"; | |
674 | break; | |
675 | } | |
676 | if (mac) | |
677 | fprintf (file, " [%s]", mac); | |
266abb8f | 678 | } |
266abb8f NS |
679 | } |
680 | ||
9e1281c7 CM |
681 | fputc ('\n', file); |
682 | ||
b34976b6 | 683 | return TRUE; |
9e1281c7 | 684 | } |
252b5132 RH |
685 | /* Look through the relocs for a section during the first phase, and |
686 | allocate space in the global offset table or procedure linkage | |
687 | table. */ | |
688 | ||
b34976b6 | 689 | static bfd_boolean |
252b5132 RH |
690 | elf_m68k_check_relocs (abfd, info, sec, relocs) |
691 | bfd *abfd; | |
692 | struct bfd_link_info *info; | |
693 | asection *sec; | |
694 | const Elf_Internal_Rela *relocs; | |
695 | { | |
696 | bfd *dynobj; | |
697 | Elf_Internal_Shdr *symtab_hdr; | |
698 | struct elf_link_hash_entry **sym_hashes; | |
699 | bfd_signed_vma *local_got_refcounts; | |
700 | const Elf_Internal_Rela *rel; | |
701 | const Elf_Internal_Rela *rel_end; | |
702 | asection *sgot; | |
703 | asection *srelgot; | |
704 | asection *sreloc; | |
705 | ||
1049f94e | 706 | if (info->relocatable) |
b34976b6 | 707 | return TRUE; |
252b5132 RH |
708 | |
709 | dynobj = elf_hash_table (info)->dynobj; | |
710 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
711 | sym_hashes = elf_sym_hashes (abfd); | |
712 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
713 | ||
714 | sgot = NULL; | |
715 | srelgot = NULL; | |
716 | sreloc = NULL; | |
717 | ||
718 | rel_end = relocs + sec->reloc_count; | |
719 | for (rel = relocs; rel < rel_end; rel++) | |
720 | { | |
721 | unsigned long r_symndx; | |
722 | struct elf_link_hash_entry *h; | |
723 | ||
724 | r_symndx = ELF32_R_SYM (rel->r_info); | |
725 | ||
726 | if (r_symndx < symtab_hdr->sh_info) | |
727 | h = NULL; | |
728 | else | |
973a3492 L |
729 | { |
730 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
731 | while (h->root.type == bfd_link_hash_indirect | |
732 | || h->root.type == bfd_link_hash_warning) | |
733 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
734 | } | |
252b5132 RH |
735 | |
736 | switch (ELF32_R_TYPE (rel->r_info)) | |
737 | { | |
738 | case R_68K_GOT8: | |
739 | case R_68K_GOT16: | |
740 | case R_68K_GOT32: | |
741 | if (h != NULL | |
742 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
743 | break; | |
744 | /* Fall through. */ | |
745 | case R_68K_GOT8O: | |
746 | case R_68K_GOT16O: | |
747 | case R_68K_GOT32O: | |
748 | /* This symbol requires a global offset table entry. */ | |
749 | ||
750 | if (dynobj == NULL) | |
751 | { | |
752 | /* Create the .got section. */ | |
753 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
754 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 755 | return FALSE; |
252b5132 RH |
756 | } |
757 | ||
758 | if (sgot == NULL) | |
759 | { | |
760 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
761 | BFD_ASSERT (sgot != NULL); | |
762 | } | |
763 | ||
764 | if (srelgot == NULL | |
765 | && (h != NULL || info->shared)) | |
766 | { | |
767 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
768 | if (srelgot == NULL) | |
769 | { | |
3496cb2a L |
770 | srelgot = bfd_make_section_with_flags (dynobj, |
771 | ".rela.got", | |
772 | (SEC_ALLOC | |
773 | | SEC_LOAD | |
774 | | SEC_HAS_CONTENTS | |
775 | | SEC_IN_MEMORY | |
776 | | SEC_LINKER_CREATED | |
777 | | SEC_READONLY)); | |
252b5132 | 778 | if (srelgot == NULL |
252b5132 | 779 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 780 | return FALSE; |
252b5132 RH |
781 | } |
782 | } | |
783 | ||
784 | if (h != NULL) | |
785 | { | |
51b64d56 | 786 | if (h->got.refcount == 0) |
252b5132 | 787 | { |
252b5132 | 788 | /* Make sure this symbol is output as a dynamic symbol. */ |
b6152c34 | 789 | if (h->dynindx == -1 |
f5385ebf | 790 | && !h->forced_local) |
252b5132 | 791 | { |
c152c796 | 792 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 793 | return FALSE; |
252b5132 RH |
794 | } |
795 | ||
796 | /* Allocate space in the .got section. */ | |
eea6121a | 797 | sgot->size += 4; |
252b5132 | 798 | /* Allocate relocation space. */ |
eea6121a | 799 | srelgot->size += sizeof (Elf32_External_Rela); |
252b5132 | 800 | } |
51b64d56 | 801 | h->got.refcount++; |
252b5132 RH |
802 | } |
803 | else | |
804 | { | |
805 | /* This is a global offset table entry for a local symbol. */ | |
806 | if (local_got_refcounts == NULL) | |
807 | { | |
dc810e39 | 808 | bfd_size_type size; |
252b5132 | 809 | |
dc810e39 AM |
810 | size = symtab_hdr->sh_info; |
811 | size *= sizeof (bfd_signed_vma); | |
252b5132 | 812 | local_got_refcounts = ((bfd_signed_vma *) |
51b64d56 | 813 | bfd_zalloc (abfd, size)); |
252b5132 | 814 | if (local_got_refcounts == NULL) |
b34976b6 | 815 | return FALSE; |
252b5132 | 816 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 817 | } |
51b64d56 | 818 | if (local_got_refcounts[r_symndx] == 0) |
252b5132 | 819 | { |
eea6121a | 820 | sgot->size += 4; |
252b5132 RH |
821 | if (info->shared) |
822 | { | |
823 | /* If we are generating a shared object, we need to | |
824 | output a R_68K_RELATIVE reloc so that the dynamic | |
825 | linker can adjust this GOT entry. */ | |
eea6121a | 826 | srelgot->size += sizeof (Elf32_External_Rela); |
252b5132 RH |
827 | } |
828 | } | |
51b64d56 | 829 | local_got_refcounts[r_symndx]++; |
252b5132 RH |
830 | } |
831 | break; | |
832 | ||
833 | case R_68K_PLT8: | |
834 | case R_68K_PLT16: | |
835 | case R_68K_PLT32: | |
836 | /* This symbol requires a procedure linkage table entry. We | |
837 | actually build the entry in adjust_dynamic_symbol, | |
838 | because this might be a case of linking PIC code which is | |
839 | never referenced by a dynamic object, in which case we | |
840 | don't need to generate a procedure linkage table entry | |
841 | after all. */ | |
842 | ||
843 | /* If this is a local symbol, we resolve it directly without | |
844 | creating a procedure linkage table entry. */ | |
845 | if (h == NULL) | |
846 | continue; | |
847 | ||
f5385ebf | 848 | h->needs_plt = 1; |
51b64d56 | 849 | h->plt.refcount++; |
252b5132 RH |
850 | break; |
851 | ||
852 | case R_68K_PLT8O: | |
853 | case R_68K_PLT16O: | |
854 | case R_68K_PLT32O: | |
855 | /* This symbol requires a procedure linkage table entry. */ | |
856 | ||
857 | if (h == NULL) | |
858 | { | |
859 | /* It does not make sense to have this relocation for a | |
860 | local symbol. FIXME: does it? How to handle it if | |
861 | it does make sense? */ | |
862 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 863 | return FALSE; |
252b5132 RH |
864 | } |
865 | ||
866 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 867 | if (h->dynindx == -1 |
f5385ebf | 868 | && !h->forced_local) |
252b5132 | 869 | { |
c152c796 | 870 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 871 | return FALSE; |
252b5132 RH |
872 | } |
873 | ||
f5385ebf | 874 | h->needs_plt = 1; |
51b64d56 | 875 | h->plt.refcount++; |
252b5132 RH |
876 | break; |
877 | ||
878 | case R_68K_PC8: | |
879 | case R_68K_PC16: | |
880 | case R_68K_PC32: | |
881 | /* If we are creating a shared library and this is not a local | |
882 | symbol, we need to copy the reloc into the shared library. | |
883 | However when linking with -Bsymbolic and this is a global | |
884 | symbol which is defined in an object we are including in the | |
885 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
886 | reloc directly. At this point we have not seen all the input | |
887 | files, so it is possible that DEF_REGULAR is not set now but | |
888 | will be set later (it is never cleared). We account for that | |
889 | possibility below by storing information in the | |
890 | pcrel_relocs_copied field of the hash table entry. */ | |
891 | if (!(info->shared | |
892 | && (sec->flags & SEC_ALLOC) != 0 | |
893 | && h != NULL | |
894 | && (!info->symbolic | |
b6152c34 | 895 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 896 | || !h->def_regular))) |
252b5132 RH |
897 | { |
898 | if (h != NULL) | |
899 | { | |
900 | /* Make sure a plt entry is created for this symbol if | |
901 | it turns out to be a function defined by a dynamic | |
902 | object. */ | |
51b64d56 | 903 | h->plt.refcount++; |
252b5132 RH |
904 | } |
905 | break; | |
906 | } | |
907 | /* Fall through. */ | |
908 | case R_68K_8: | |
909 | case R_68K_16: | |
910 | case R_68K_32: | |
911 | if (h != NULL) | |
912 | { | |
913 | /* Make sure a plt entry is created for this symbol if it | |
914 | turns out to be a function defined by a dynamic object. */ | |
51b64d56 | 915 | h->plt.refcount++; |
252b5132 RH |
916 | } |
917 | ||
918 | /* If we are creating a shared library, we need to copy the | |
919 | reloc into the shared library. */ | |
920 | if (info->shared | |
921 | && (sec->flags & SEC_ALLOC) != 0) | |
922 | { | |
923 | /* When creating a shared object, we must copy these | |
924 | reloc types into the output file. We create a reloc | |
925 | section in dynobj and make room for this reloc. */ | |
926 | if (sreloc == NULL) | |
927 | { | |
928 | const char *name; | |
929 | ||
930 | name = (bfd_elf_string_from_elf_section | |
931 | (abfd, | |
932 | elf_elfheader (abfd)->e_shstrndx, | |
933 | elf_section_data (sec)->rel_hdr.sh_name)); | |
934 | if (name == NULL) | |
b34976b6 | 935 | return FALSE; |
252b5132 | 936 | |
0112cd26 | 937 | BFD_ASSERT (CONST_STRNEQ (name, ".rela") |
252b5132 RH |
938 | && strcmp (bfd_get_section_name (abfd, sec), |
939 | name + 5) == 0); | |
940 | ||
941 | sreloc = bfd_get_section_by_name (dynobj, name); | |
942 | if (sreloc == NULL) | |
943 | { | |
3496cb2a L |
944 | sreloc = bfd_make_section_with_flags (dynobj, |
945 | name, | |
946 | (SEC_ALLOC | |
947 | | SEC_LOAD | |
948 | | SEC_HAS_CONTENTS | |
949 | | SEC_IN_MEMORY | |
950 | | SEC_LINKER_CREATED | |
951 | | SEC_READONLY)); | |
252b5132 | 952 | if (sreloc == NULL |
252b5132 | 953 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) |
b34976b6 | 954 | return FALSE; |
252b5132 | 955 | } |
d2ff124f | 956 | elf_section_data (sec)->sreloc = sreloc; |
252b5132 RH |
957 | } |
958 | ||
3e829b4a AS |
959 | if (sec->flags & SEC_READONLY |
960 | /* Don't set DF_TEXTREL yet for PC relative | |
961 | relocations, they might be discarded later. */ | |
962 | && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8 | |
963 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
964 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)) | |
965 | info->flags |= DF_TEXTREL; | |
966 | ||
eea6121a | 967 | sreloc->size += sizeof (Elf32_External_Rela); |
252b5132 | 968 | |
b6152c34 AS |
969 | /* We count the number of PC relative relocations we have |
970 | entered for this symbol, so that we can discard them | |
971 | again if, in the -Bsymbolic case, the symbol is later | |
972 | defined by a regular object, or, in the normal shared | |
973 | case, the symbol is forced to be local. Note that this | |
974 | function is only called if we are using an m68kelf linker | |
975 | hash table, which means that h is really a pointer to an | |
252b5132 | 976 | elf_m68k_link_hash_entry. */ |
b6152c34 AS |
977 | if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8 |
978 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
979 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32) | |
252b5132 | 980 | { |
252b5132 | 981 | struct elf_m68k_pcrel_relocs_copied *p; |
b6152c34 AS |
982 | struct elf_m68k_pcrel_relocs_copied **head; |
983 | ||
984 | if (h != NULL) | |
985 | { | |
986 | struct elf_m68k_link_hash_entry *eh | |
0cca5f05 | 987 | = elf_m68k_hash_entry (h); |
b6152c34 AS |
988 | head = &eh->pcrel_relocs_copied; |
989 | } | |
990 | else | |
991 | { | |
992 | asection *s; | |
6edfbbad DJ |
993 | void *vpp; |
994 | ||
b6152c34 AS |
995 | s = (bfd_section_from_r_symndx |
996 | (abfd, &elf_m68k_hash_table (info)->sym_sec, | |
997 | sec, r_symndx)); | |
998 | if (s == NULL) | |
999 | return FALSE; | |
252b5132 | 1000 | |
6edfbbad DJ |
1001 | vpp = &elf_section_data (s)->local_dynrel; |
1002 | head = (struct elf_m68k_pcrel_relocs_copied **) vpp; | |
b6152c34 | 1003 | } |
252b5132 | 1004 | |
b6152c34 | 1005 | for (p = *head; p != NULL; p = p->next) |
252b5132 RH |
1006 | if (p->section == sreloc) |
1007 | break; | |
1008 | ||
1009 | if (p == NULL) | |
1010 | { | |
1011 | p = ((struct elf_m68k_pcrel_relocs_copied *) | |
dc810e39 | 1012 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
252b5132 | 1013 | if (p == NULL) |
b34976b6 | 1014 | return FALSE; |
b6152c34 AS |
1015 | p->next = *head; |
1016 | *head = p; | |
252b5132 RH |
1017 | p->section = sreloc; |
1018 | p->count = 0; | |
1019 | } | |
1020 | ||
1021 | ++p->count; | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | break; | |
1026 | ||
1027 | /* This relocation describes the C++ object vtable hierarchy. | |
1028 | Reconstruct it for later use during GC. */ | |
1029 | case R_68K_GNU_VTINHERIT: | |
c152c796 | 1030 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 1031 | return FALSE; |
252b5132 RH |
1032 | break; |
1033 | ||
1034 | /* This relocation describes which C++ vtable entries are actually | |
1035 | used. Record for later use during GC. */ | |
1036 | case R_68K_GNU_VTENTRY: | |
c152c796 | 1037 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 1038 | return FALSE; |
252b5132 RH |
1039 | break; |
1040 | ||
1041 | default: | |
1042 | break; | |
1043 | } | |
1044 | } | |
1045 | ||
b34976b6 | 1046 | return TRUE; |
252b5132 RH |
1047 | } |
1048 | ||
1049 | /* Return the section that should be marked against GC for a given | |
1050 | relocation. */ | |
1051 | ||
1052 | static asection * | |
07adf181 AM |
1053 | elf_m68k_gc_mark_hook (asection *sec, |
1054 | struct bfd_link_info *info, | |
1055 | Elf_Internal_Rela *rel, | |
1056 | struct elf_link_hash_entry *h, | |
1057 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1058 | { |
1059 | if (h != NULL) | |
07adf181 AM |
1060 | switch (ELF32_R_TYPE (rel->r_info)) |
1061 | { | |
1062 | case R_68K_GNU_VTINHERIT: | |
1063 | case R_68K_GNU_VTENTRY: | |
1064 | return NULL; | |
1065 | } | |
1066 | ||
1067 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
1068 | } |
1069 | ||
1070 | /* Update the got entry reference counts for the section being removed. */ | |
1071 | ||
b34976b6 | 1072 | static bfd_boolean |
07adf181 AM |
1073 | elf_m68k_gc_sweep_hook (bfd *abfd, |
1074 | struct bfd_link_info *info, | |
1075 | asection *sec, | |
1076 | const Elf_Internal_Rela *relocs) | |
252b5132 RH |
1077 | { |
1078 | Elf_Internal_Shdr *symtab_hdr; | |
1079 | struct elf_link_hash_entry **sym_hashes; | |
1080 | bfd_signed_vma *local_got_refcounts; | |
1081 | const Elf_Internal_Rela *rel, *relend; | |
252b5132 | 1082 | bfd *dynobj; |
dd5724d5 AM |
1083 | asection *sgot; |
1084 | asection *srelgot; | |
252b5132 | 1085 | |
252b5132 | 1086 | dynobj = elf_hash_table (info)->dynobj; |
dd5724d5 | 1087 | if (dynobj == NULL) |
b34976b6 | 1088 | return TRUE; |
dd5724d5 | 1089 | |
4f075348 KH |
1090 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1091 | sym_hashes = elf_sym_hashes (abfd); | |
1092 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1093 | ||
dd5724d5 AM |
1094 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1095 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
252b5132 RH |
1096 | |
1097 | relend = relocs + sec->reloc_count; | |
1098 | for (rel = relocs; rel < relend; rel++) | |
1099 | { | |
4f075348 | 1100 | unsigned long r_symndx; |
3eb128b2 AM |
1101 | struct elf_link_hash_entry *h = NULL; |
1102 | ||
1103 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1104 | if (r_symndx >= symtab_hdr->sh_info) | |
1105 | { | |
1106 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1107 | while (h->root.type == bfd_link_hash_indirect | |
1108 | || h->root.type == bfd_link_hash_warning) | |
1109 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1110 | } | |
4f075348 | 1111 | |
252b5132 RH |
1112 | switch (ELF32_R_TYPE (rel->r_info)) |
1113 | { | |
1114 | case R_68K_GOT8: | |
1115 | case R_68K_GOT16: | |
1116 | case R_68K_GOT32: | |
1117 | case R_68K_GOT8O: | |
1118 | case R_68K_GOT16O: | |
1119 | case R_68K_GOT32O: | |
3eb128b2 | 1120 | if (h != NULL) |
252b5132 | 1121 | { |
252b5132 RH |
1122 | if (h->got.refcount > 0) |
1123 | { | |
1124 | --h->got.refcount; | |
1125 | if (h->got.refcount == 0) | |
1126 | { | |
1127 | /* We don't need the .got entry any more. */ | |
eea6121a AM |
1128 | sgot->size -= 4; |
1129 | srelgot->size -= sizeof (Elf32_External_Rela); | |
252b5132 RH |
1130 | } |
1131 | } | |
1132 | } | |
dd5724d5 | 1133 | else if (local_got_refcounts != NULL) |
252b5132 RH |
1134 | { |
1135 | if (local_got_refcounts[r_symndx] > 0) | |
1136 | { | |
1137 | --local_got_refcounts[r_symndx]; | |
1138 | if (local_got_refcounts[r_symndx] == 0) | |
1139 | { | |
1140 | /* We don't need the .got entry any more. */ | |
eea6121a | 1141 | sgot->size -= 4; |
252b5132 | 1142 | if (info->shared) |
eea6121a | 1143 | srelgot->size -= sizeof (Elf32_External_Rela); |
252b5132 RH |
1144 | } |
1145 | } | |
1146 | } | |
1147 | break; | |
1148 | ||
1149 | case R_68K_PLT8: | |
1150 | case R_68K_PLT16: | |
1151 | case R_68K_PLT32: | |
1152 | case R_68K_PLT8O: | |
1153 | case R_68K_PLT16O: | |
1154 | case R_68K_PLT32O: | |
1155 | case R_68K_PC8: | |
1156 | case R_68K_PC16: | |
1157 | case R_68K_PC32: | |
1158 | case R_68K_8: | |
1159 | case R_68K_16: | |
1160 | case R_68K_32: | |
3eb128b2 | 1161 | if (h != NULL) |
252b5132 | 1162 | { |
252b5132 RH |
1163 | if (h->plt.refcount > 0) |
1164 | --h->plt.refcount; | |
1165 | } | |
1166 | break; | |
1167 | ||
1168 | default: | |
1169 | break; | |
1170 | } | |
1171 | } | |
1172 | ||
b34976b6 | 1173 | return TRUE; |
252b5132 | 1174 | } |
cc3e26be RS |
1175 | \f |
1176 | /* Return the type of PLT associated with OUTPUT_BFD. */ | |
1177 | ||
1178 | static const struct elf_m68k_plt_info * | |
1179 | elf_m68k_get_plt_info (bfd *output_bfd) | |
1180 | { | |
1181 | unsigned int features; | |
1182 | ||
1183 | features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd)); | |
1184 | if (features & cpu32) | |
1185 | return &elf_cpu32_plt_info; | |
1186 | if (features & mcfisa_b) | |
1187 | return &elf_isab_plt_info; | |
9a2e615a NS |
1188 | if (features & mcfisa_c) |
1189 | return &elf_isac_plt_info; | |
cc3e26be RS |
1190 | return &elf_m68k_plt_info; |
1191 | } | |
1192 | ||
1193 | /* This function is called after all the input files have been read, | |
1194 | and the input sections have been assigned to output sections. | |
1195 | It's a convenient place to determine the PLT style. */ | |
1196 | ||
1197 | static bfd_boolean | |
1198 | elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) | |
1199 | { | |
1200 | elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd); | |
1201 | return TRUE; | |
1202 | } | |
252b5132 | 1203 | |
252b5132 RH |
1204 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1205 | regular object. The current definition is in some section of the | |
1206 | dynamic object, but we're not including those sections. We have to | |
1207 | change the definition to something the rest of the link can | |
1208 | understand. */ | |
1209 | ||
b34976b6 | 1210 | static bfd_boolean |
252b5132 RH |
1211 | elf_m68k_adjust_dynamic_symbol (info, h) |
1212 | struct bfd_link_info *info; | |
1213 | struct elf_link_hash_entry *h; | |
1214 | { | |
cc3e26be | 1215 | struct elf_m68k_link_hash_table *htab; |
252b5132 RH |
1216 | bfd *dynobj; |
1217 | asection *s; | |
1218 | unsigned int power_of_two; | |
1219 | ||
cc3e26be | 1220 | htab = elf_m68k_hash_table (info); |
252b5132 RH |
1221 | dynobj = elf_hash_table (info)->dynobj; |
1222 | ||
1223 | /* Make sure we know what is going on here. */ | |
1224 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 1225 | && (h->needs_plt |
f6e332e6 | 1226 | || h->u.weakdef != NULL |
f5385ebf AM |
1227 | || (h->def_dynamic |
1228 | && h->ref_regular | |
1229 | && !h->def_regular))); | |
252b5132 RH |
1230 | |
1231 | /* If this is a function, put it in the procedure linkage table. We | |
1232 | will fill in the contents of the procedure linkage table later, | |
1233 | when we know the address of the .got section. */ | |
1234 | if (h->type == STT_FUNC | |
f5385ebf | 1235 | || h->needs_plt) |
252b5132 | 1236 | { |
9dfe8738 AS |
1237 | if ((h->plt.refcount <= 0 |
1238 | || SYMBOL_CALLS_LOCAL (info, h) | |
1239 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1240 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
1241 | /* We must always create the plt entry if it was referenced |
1242 | by a PLTxxO relocation. In this case we already recorded | |
1243 | it as a dynamic symbol. */ | |
1244 | && h->dynindx == -1) | |
1245 | { | |
1246 | /* This case can occur if we saw a PLTxx reloc in an input | |
1247 | file, but the symbol was never referred to by a dynamic | |
9dfe8738 AS |
1248 | object, or if all references were garbage collected. In |
1249 | such a case, we don't actually need to build a procedure | |
1250 | linkage table, and we can just do a PCxx reloc instead. */ | |
252b5132 | 1251 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1252 | h->needs_plt = 0; |
b34976b6 | 1253 | return TRUE; |
252b5132 RH |
1254 | } |
1255 | ||
1256 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 1257 | if (h->dynindx == -1 |
f5385ebf | 1258 | && !h->forced_local) |
252b5132 | 1259 | { |
c152c796 | 1260 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1261 | return FALSE; |
252b5132 RH |
1262 | } |
1263 | ||
1264 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
1265 | BFD_ASSERT (s != NULL); | |
1266 | ||
1267 | /* If this is the first .plt entry, make room for the special | |
1268 | first entry. */ | |
eea6121a | 1269 | if (s->size == 0) |
cc3e26be | 1270 | s->size = htab->plt_info->size; |
252b5132 RH |
1271 | |
1272 | /* If this symbol is not defined in a regular file, and we are | |
1273 | not generating a shared library, then set the symbol to this | |
1274 | location in the .plt. This is required to make function | |
1275 | pointers compare as equal between the normal executable and | |
1276 | the shared library. */ | |
1277 | if (!info->shared | |
f5385ebf | 1278 | && !h->def_regular) |
252b5132 RH |
1279 | { |
1280 | h->root.u.def.section = s; | |
eea6121a | 1281 | h->root.u.def.value = s->size; |
252b5132 RH |
1282 | } |
1283 | ||
eea6121a | 1284 | h->plt.offset = s->size; |
252b5132 RH |
1285 | |
1286 | /* Make room for this entry. */ | |
cc3e26be | 1287 | s->size += htab->plt_info->size; |
252b5132 RH |
1288 | |
1289 | /* We also need to make an entry in the .got.plt section, which | |
1290 | will be placed in the .got section by the linker script. */ | |
252b5132 RH |
1291 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
1292 | BFD_ASSERT (s != NULL); | |
eea6121a | 1293 | s->size += 4; |
252b5132 RH |
1294 | |
1295 | /* We also need to make an entry in the .rela.plt section. */ | |
252b5132 RH |
1296 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
1297 | BFD_ASSERT (s != NULL); | |
eea6121a | 1298 | s->size += sizeof (Elf32_External_Rela); |
252b5132 | 1299 | |
b34976b6 | 1300 | return TRUE; |
252b5132 RH |
1301 | } |
1302 | ||
1303 | /* Reinitialize the plt offset now that it is not used as a reference | |
1304 | count any more. */ | |
1305 | h->plt.offset = (bfd_vma) -1; | |
1306 | ||
1307 | /* If this is a weak symbol, and there is a real definition, the | |
1308 | processor independent code will have arranged for us to see the | |
1309 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1310 | if (h->u.weakdef != NULL) |
252b5132 | 1311 | { |
f6e332e6 AM |
1312 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1313 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1314 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1315 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1316 | return TRUE; |
252b5132 RH |
1317 | } |
1318 | ||
1319 | /* This is a reference to a symbol defined by a dynamic object which | |
1320 | is not a function. */ | |
1321 | ||
1322 | /* If we are creating a shared library, we must presume that the | |
1323 | only references to the symbol are via the global offset table. | |
1324 | For such cases we need not do anything here; the relocations will | |
1325 | be handled correctly by relocate_section. */ | |
1326 | if (info->shared) | |
b34976b6 | 1327 | return TRUE; |
252b5132 | 1328 | |
909272ee AM |
1329 | if (h->size == 0) |
1330 | { | |
1331 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1332 | h->root.root.string); | |
1333 | return TRUE; | |
1334 | } | |
1335 | ||
252b5132 RH |
1336 | /* We must allocate the symbol in our .dynbss section, which will |
1337 | become part of the .bss section of the executable. There will be | |
1338 | an entry for this symbol in the .dynsym section. The dynamic | |
1339 | object will contain position independent code, so all references | |
1340 | from the dynamic object to this symbol will go through the global | |
1341 | offset table. The dynamic linker will use the .dynsym entry to | |
1342 | determine the address it must put in the global offset table, so | |
1343 | both the dynamic object and the regular object will refer to the | |
1344 | same memory location for the variable. */ | |
1345 | ||
1346 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1347 | BFD_ASSERT (s != NULL); | |
1348 | ||
1349 | /* We must generate a R_68K_COPY reloc to tell the dynamic linker to | |
1350 | copy the initial value out of the dynamic object and into the | |
1351 | runtime process image. We need to remember the offset into the | |
1352 | .rela.bss section we are going to use. */ | |
1353 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1354 | { | |
1355 | asection *srel; | |
1356 | ||
1357 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1358 | BFD_ASSERT (srel != NULL); | |
eea6121a | 1359 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1360 | h->needs_copy = 1; |
252b5132 RH |
1361 | } |
1362 | ||
1363 | /* We need to figure out the alignment required for this symbol. I | |
1364 | have no idea how ELF linkers handle this. */ | |
1365 | power_of_two = bfd_log2 (h->size); | |
1366 | if (power_of_two > 3) | |
1367 | power_of_two = 3; | |
1368 | ||
1369 | /* Apply the required alignment. */ | |
eea6121a | 1370 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
252b5132 RH |
1371 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
1372 | { | |
1373 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 1374 | return FALSE; |
252b5132 RH |
1375 | } |
1376 | ||
1377 | /* Define the symbol as being at this point in the section. */ | |
1378 | h->root.u.def.section = s; | |
eea6121a | 1379 | h->root.u.def.value = s->size; |
252b5132 RH |
1380 | |
1381 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 1382 | s->size += h->size; |
252b5132 | 1383 | |
b34976b6 | 1384 | return TRUE; |
252b5132 RH |
1385 | } |
1386 | ||
1387 | /* Set the sizes of the dynamic sections. */ | |
1388 | ||
b34976b6 | 1389 | static bfd_boolean |
252b5132 | 1390 | elf_m68k_size_dynamic_sections (output_bfd, info) |
aa91b392 | 1391 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1392 | struct bfd_link_info *info; |
1393 | { | |
1394 | bfd *dynobj; | |
1395 | asection *s; | |
b34976b6 AM |
1396 | bfd_boolean plt; |
1397 | bfd_boolean relocs; | |
252b5132 RH |
1398 | |
1399 | dynobj = elf_hash_table (info)->dynobj; | |
1400 | BFD_ASSERT (dynobj != NULL); | |
1401 | ||
1402 | if (elf_hash_table (info)->dynamic_sections_created) | |
1403 | { | |
1404 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1405 | if (info->executable) |
252b5132 RH |
1406 | { |
1407 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1408 | BFD_ASSERT (s != NULL); | |
eea6121a | 1409 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
1410 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1411 | } | |
1412 | } | |
1413 | else | |
1414 | { | |
1415 | /* We may have created entries in the .rela.got section. | |
1416 | However, if we are not creating the dynamic sections, we will | |
1417 | not actually use these entries. Reset the size of .rela.got, | |
1418 | which will cause it to get stripped from the output file | |
1419 | below. */ | |
1420 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1421 | if (s != NULL) | |
eea6121a | 1422 | s->size = 0; |
252b5132 RH |
1423 | } |
1424 | ||
b6152c34 AS |
1425 | /* If this is a -Bsymbolic shared link, then we need to discard all |
1426 | PC relative relocs against symbols defined in a regular object. | |
1427 | For the normal shared case we discard the PC relative relocs | |
1428 | against symbols that have become local due to visibility changes. | |
1429 | We allocated space for them in the check_relocs routine, but we | |
1430 | will not fill them in in the relocate_section routine. */ | |
1431 | if (info->shared) | |
0cca5f05 AS |
1432 | elf_link_hash_traverse (elf_hash_table (info), |
1433 | elf_m68k_discard_copies, | |
1434 | (PTR) info); | |
252b5132 RH |
1435 | |
1436 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1437 | determined the sizes of the various dynamic sections. Allocate | |
1438 | memory for them. */ | |
b34976b6 AM |
1439 | plt = FALSE; |
1440 | relocs = FALSE; | |
252b5132 RH |
1441 | for (s = dynobj->sections; s != NULL; s = s->next) |
1442 | { | |
1443 | const char *name; | |
252b5132 RH |
1444 | |
1445 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1446 | continue; | |
1447 | ||
1448 | /* It's OK to base decisions on the section name, because none | |
1449 | of the dynobj section names depend upon the input files. */ | |
1450 | name = bfd_get_section_name (dynobj, s); | |
1451 | ||
252b5132 RH |
1452 | if (strcmp (name, ".plt") == 0) |
1453 | { | |
c456f082 AM |
1454 | /* Remember whether there is a PLT. */ |
1455 | plt = s->size != 0; | |
252b5132 | 1456 | } |
0112cd26 | 1457 | else if (CONST_STRNEQ (name, ".rela")) |
252b5132 | 1458 | { |
c456f082 | 1459 | if (s->size != 0) |
252b5132 | 1460 | { |
b34976b6 | 1461 | relocs = TRUE; |
252b5132 RH |
1462 | |
1463 | /* We use the reloc_count field as a counter if we need | |
1464 | to copy relocs into the output file. */ | |
1465 | s->reloc_count = 0; | |
1466 | } | |
1467 | } | |
0112cd26 | 1468 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 1469 | && strcmp (name, ".dynbss") != 0) |
252b5132 RH |
1470 | { |
1471 | /* It's not one of our sections, so don't allocate space. */ | |
1472 | continue; | |
1473 | } | |
1474 | ||
c456f082 | 1475 | if (s->size == 0) |
252b5132 | 1476 | { |
c456f082 AM |
1477 | /* If we don't need this section, strip it from the |
1478 | output file. This is mostly to handle .rela.bss and | |
1479 | .rela.plt. We must create both sections in | |
1480 | create_dynamic_sections, because they must be created | |
1481 | before the linker maps input sections to output | |
1482 | sections. The linker does that before | |
1483 | adjust_dynamic_symbol is called, and it is that | |
1484 | function which decides whether anything needs to go | |
1485 | into these sections. */ | |
8423293d | 1486 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
1487 | continue; |
1488 | } | |
1489 | ||
c456f082 AM |
1490 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1491 | continue; | |
1492 | ||
252b5132 | 1493 | /* Allocate memory for the section contents. */ |
7a9af8c4 NC |
1494 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
1495 | Unused entries should be reclaimed before the section's contents | |
1496 | are written out, but at the moment this does not happen. Thus in | |
1497 | order to prevent writing out garbage, we initialise the section's | |
1498 | contents to zero. */ | |
eea6121a | 1499 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 1500 | if (s->contents == NULL) |
b34976b6 | 1501 | return FALSE; |
252b5132 RH |
1502 | } |
1503 | ||
1504 | if (elf_hash_table (info)->dynamic_sections_created) | |
1505 | { | |
1506 | /* Add some entries to the .dynamic section. We fill in the | |
1507 | values later, in elf_m68k_finish_dynamic_sections, but we | |
1508 | must add the entries now so that we get the correct size for | |
1509 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1510 | dynamic linker and used by the debugger. */ | |
dc810e39 | 1511 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1512 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 1513 | |
252b5132 RH |
1514 | if (!info->shared) |
1515 | { | |
dc810e39 | 1516 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1517 | return FALSE; |
252b5132 RH |
1518 | } |
1519 | ||
1520 | if (plt) | |
1521 | { | |
dc810e39 AM |
1522 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1523 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1524 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1525 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1526 | return FALSE; |
252b5132 RH |
1527 | } |
1528 | ||
1529 | if (relocs) | |
1530 | { | |
dc810e39 AM |
1531 | if (!add_dynamic_entry (DT_RELA, 0) |
1532 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1533 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1534 | return FALSE; |
252b5132 RH |
1535 | } |
1536 | ||
aa91b392 | 1537 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 1538 | { |
dc810e39 | 1539 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 1540 | return FALSE; |
252b5132 RH |
1541 | } |
1542 | } | |
dc810e39 | 1543 | #undef add_dynamic_entry |
252b5132 | 1544 | |
b34976b6 | 1545 | return TRUE; |
252b5132 RH |
1546 | } |
1547 | ||
0cca5f05 | 1548 | /* This function is called via elf_link_hash_traverse if we are |
b6152c34 AS |
1549 | creating a shared object. In the -Bsymbolic case it discards the |
1550 | space allocated to copy PC relative relocs against symbols which | |
3e829b4a | 1551 | are defined in regular objects. For the normal shared case, it |
b6152c34 AS |
1552 | discards space for pc-relative relocs that have become local due to |
1553 | symbol visibility changes. We allocated space for them in the | |
1554 | check_relocs routine, but we won't fill them in in the | |
3e829b4a AS |
1555 | relocate_section routine. |
1556 | ||
1557 | We also check whether any of the remaining relocations apply | |
1558 | against a readonly section, and set the DF_TEXTREL flag in this | |
1559 | case. */ | |
252b5132 | 1560 | |
b34976b6 | 1561 | static bfd_boolean |
b6152c34 | 1562 | elf_m68k_discard_copies (h, inf) |
0cca5f05 | 1563 | struct elf_link_hash_entry *h; |
b6152c34 | 1564 | PTR inf; |
252b5132 | 1565 | { |
b6152c34 | 1566 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
252b5132 RH |
1567 | struct elf_m68k_pcrel_relocs_copied *s; |
1568 | ||
0cca5f05 AS |
1569 | if (h->root.type == bfd_link_hash_warning) |
1570 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
e92d460e | 1571 | |
f5385ebf | 1572 | if (!h->def_regular |
b6152c34 | 1573 | || (!info->symbolic |
f5385ebf | 1574 | && !h->forced_local)) |
3e829b4a AS |
1575 | { |
1576 | if ((info->flags & DF_TEXTREL) == 0) | |
1577 | { | |
1578 | /* Look for relocations against read-only sections. */ | |
0cca5f05 AS |
1579 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
1580 | s != NULL; | |
1581 | s = s->next) | |
3e829b4a AS |
1582 | if ((s->section->flags & SEC_READONLY) != 0) |
1583 | { | |
1584 | info->flags |= DF_TEXTREL; | |
1585 | break; | |
1586 | } | |
1587 | } | |
0cca5f05 | 1588 | |
3e829b4a AS |
1589 | return TRUE; |
1590 | } | |
252b5132 | 1591 | |
0cca5f05 AS |
1592 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
1593 | s != NULL; | |
1594 | s = s->next) | |
eea6121a | 1595 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
252b5132 | 1596 | |
b34976b6 | 1597 | return TRUE; |
252b5132 RH |
1598 | } |
1599 | ||
1600 | /* Relocate an M68K ELF section. */ | |
1601 | ||
b34976b6 | 1602 | static bfd_boolean |
252b5132 RH |
1603 | elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section, |
1604 | contents, relocs, local_syms, local_sections) | |
1605 | bfd *output_bfd; | |
1606 | struct bfd_link_info *info; | |
1607 | bfd *input_bfd; | |
1608 | asection *input_section; | |
1609 | bfd_byte *contents; | |
1610 | Elf_Internal_Rela *relocs; | |
1611 | Elf_Internal_Sym *local_syms; | |
1612 | asection **local_sections; | |
1613 | { | |
1614 | bfd *dynobj; | |
1615 | Elf_Internal_Shdr *symtab_hdr; | |
1616 | struct elf_link_hash_entry **sym_hashes; | |
1617 | bfd_vma *local_got_offsets; | |
1618 | asection *sgot; | |
1619 | asection *splt; | |
1620 | asection *sreloc; | |
1621 | Elf_Internal_Rela *rel; | |
1622 | Elf_Internal_Rela *relend; | |
1623 | ||
1624 | dynobj = elf_hash_table (info)->dynobj; | |
1625 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1626 | sym_hashes = elf_sym_hashes (input_bfd); | |
1627 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1628 | ||
1629 | sgot = NULL; | |
1630 | splt = NULL; | |
1631 | sreloc = NULL; | |
1632 | ||
1633 | rel = relocs; | |
1634 | relend = relocs + input_section->reloc_count; | |
1635 | for (; rel < relend; rel++) | |
1636 | { | |
1637 | int r_type; | |
1638 | reloc_howto_type *howto; | |
1639 | unsigned long r_symndx; | |
1640 | struct elf_link_hash_entry *h; | |
1641 | Elf_Internal_Sym *sym; | |
1642 | asection *sec; | |
1643 | bfd_vma relocation; | |
44f745a6 | 1644 | bfd_boolean unresolved_reloc; |
252b5132 RH |
1645 | bfd_reloc_status_type r; |
1646 | ||
1647 | r_type = ELF32_R_TYPE (rel->r_info); | |
1648 | if (r_type < 0 || r_type >= (int) R_68K_max) | |
1649 | { | |
1650 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1651 | return FALSE; |
252b5132 RH |
1652 | } |
1653 | howto = howto_table + r_type; | |
1654 | ||
1655 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1656 | ||
252b5132 RH |
1657 | h = NULL; |
1658 | sym = NULL; | |
1659 | sec = NULL; | |
44f745a6 | 1660 | unresolved_reloc = FALSE; |
560e09e9 | 1661 | |
252b5132 RH |
1662 | if (r_symndx < symtab_hdr->sh_info) |
1663 | { | |
1664 | sym = local_syms + r_symndx; | |
1665 | sec = local_sections[r_symndx]; | |
8517fae7 | 1666 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
1667 | } |
1668 | else | |
1669 | { | |
560e09e9 NC |
1670 | bfd_boolean warned; |
1671 | ||
b2a8e766 AM |
1672 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1673 | r_symndx, symtab_hdr, sym_hashes, | |
1674 | h, sec, relocation, | |
1675 | unresolved_reloc, warned); | |
252b5132 RH |
1676 | } |
1677 | ||
ab96bf03 AM |
1678 | if (sec != NULL && elf_discarded_section (sec)) |
1679 | { | |
1680 | /* For relocs against symbols from removed linkonce sections, | |
1681 | or sections discarded by a linker script, we just want the | |
1682 | section contents zeroed. Avoid any special processing. */ | |
1683 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
1684 | rel->r_info = 0; | |
1685 | rel->r_addend = 0; | |
1686 | continue; | |
1687 | } | |
1688 | ||
1689 | if (info->relocatable) | |
1690 | continue; | |
1691 | ||
252b5132 RH |
1692 | switch (r_type) |
1693 | { | |
1694 | case R_68K_GOT8: | |
1695 | case R_68K_GOT16: | |
1696 | case R_68K_GOT32: | |
1697 | /* Relocation is to the address of the entry for this symbol | |
1698 | in the global offset table. */ | |
1699 | if (h != NULL | |
1700 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1701 | break; | |
1702 | /* Fall through. */ | |
1703 | case R_68K_GOT8O: | |
1704 | case R_68K_GOT16O: | |
1705 | case R_68K_GOT32O: | |
1706 | /* Relocation is the offset of the entry for this symbol in | |
1707 | the global offset table. */ | |
1708 | ||
1709 | { | |
1710 | bfd_vma off; | |
1711 | ||
1712 | if (sgot == NULL) | |
1713 | { | |
1714 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1715 | BFD_ASSERT (sgot != NULL); | |
1716 | } | |
1717 | ||
1718 | if (h != NULL) | |
1719 | { | |
a5ad465a AS |
1720 | bfd_boolean dyn; |
1721 | ||
252b5132 RH |
1722 | off = h->got.offset; |
1723 | BFD_ASSERT (off != (bfd_vma) -1); | |
1724 | ||
a5ad465a AS |
1725 | dyn = elf_hash_table (info)->dynamic_sections_created; |
1726 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
252b5132 | 1727 | || (info->shared |
a5ad465a AS |
1728 | && (info->symbolic |
1729 | || h->dynindx == -1 | |
f5385ebf AM |
1730 | || h->forced_local) |
1731 | && h->def_regular)) | |
252b5132 RH |
1732 | { |
1733 | /* This is actually a static link, or it is a | |
1734 | -Bsymbolic link and the symbol is defined | |
1735 | locally, or the symbol was forced to be local | |
1736 | because of a version file.. We must initialize | |
1737 | this entry in the global offset table. Since | |
1738 | the offset must always be a multiple of 4, we | |
1739 | use the least significant bit to record whether | |
1740 | we have initialized it already. | |
1741 | ||
1742 | When doing a dynamic link, we create a .rela.got | |
1743 | relocation entry to initialize the value. This | |
1744 | is done in the finish_dynamic_symbol routine. */ | |
1745 | if ((off & 1) != 0) | |
1746 | off &= ~1; | |
1747 | else | |
1748 | { | |
1749 | bfd_put_32 (output_bfd, relocation, | |
1750 | sgot->contents + off); | |
1751 | h->got.offset |= 1; | |
1752 | } | |
1753 | } | |
44f745a6 AS |
1754 | else |
1755 | unresolved_reloc = FALSE; | |
252b5132 RH |
1756 | } |
1757 | else | |
1758 | { | |
1759 | BFD_ASSERT (local_got_offsets != NULL | |
1760 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1761 | ||
1762 | off = local_got_offsets[r_symndx]; | |
1763 | ||
1764 | /* The offset must always be a multiple of 4. We use | |
1765 | the least significant bit to record whether we have | |
1766 | already generated the necessary reloc. */ | |
1767 | if ((off & 1) != 0) | |
1768 | off &= ~1; | |
1769 | else | |
1770 | { | |
1771 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1772 | ||
1773 | if (info->shared) | |
1774 | { | |
947216bf | 1775 | asection *s; |
252b5132 | 1776 | Elf_Internal_Rela outrel; |
947216bf | 1777 | bfd_byte *loc; |
252b5132 | 1778 | |
947216bf AM |
1779 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
1780 | BFD_ASSERT (s != NULL); | |
252b5132 RH |
1781 | |
1782 | outrel.r_offset = (sgot->output_section->vma | |
1783 | + sgot->output_offset | |
1784 | + off); | |
1785 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
1786 | outrel.r_addend = relocation; | |
947216bf AM |
1787 | loc = s->contents; |
1788 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1789 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1790 | } |
1791 | ||
1792 | local_got_offsets[r_symndx] |= 1; | |
1793 | } | |
1794 | } | |
1795 | ||
1796 | relocation = sgot->output_offset + off; | |
1797 | if (r_type == R_68K_GOT8O | |
1798 | || r_type == R_68K_GOT16O | |
1799 | || r_type == R_68K_GOT32O) | |
1800 | { | |
1801 | /* This relocation does not use the addend. */ | |
1802 | rel->r_addend = 0; | |
1803 | } | |
1804 | else | |
1805 | relocation += sgot->output_section->vma; | |
1806 | } | |
1807 | break; | |
1808 | ||
1809 | case R_68K_PLT8: | |
1810 | case R_68K_PLT16: | |
1811 | case R_68K_PLT32: | |
1812 | /* Relocation is to the entry for this symbol in the | |
1813 | procedure linkage table. */ | |
1814 | ||
1815 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1816 | without using the procedure linkage table. */ | |
1817 | if (h == NULL) | |
1818 | break; | |
1819 | ||
1820 | if (h->plt.offset == (bfd_vma) -1 | |
1821 | || !elf_hash_table (info)->dynamic_sections_created) | |
1822 | { | |
1823 | /* We didn't make a PLT entry for this symbol. This | |
1824 | happens when statically linking PIC code, or when | |
1825 | using -Bsymbolic. */ | |
1826 | break; | |
1827 | } | |
1828 | ||
1829 | if (splt == NULL) | |
1830 | { | |
1831 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1832 | BFD_ASSERT (splt != NULL); | |
1833 | } | |
1834 | ||
1835 | relocation = (splt->output_section->vma | |
1836 | + splt->output_offset | |
1837 | + h->plt.offset); | |
44f745a6 | 1838 | unresolved_reloc = FALSE; |
252b5132 RH |
1839 | break; |
1840 | ||
1841 | case R_68K_PLT8O: | |
1842 | case R_68K_PLT16O: | |
1843 | case R_68K_PLT32O: | |
1844 | /* Relocation is the offset of the entry for this symbol in | |
1845 | the procedure linkage table. */ | |
1846 | BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1); | |
1847 | ||
1848 | if (splt == NULL) | |
1849 | { | |
1850 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1851 | BFD_ASSERT (splt != NULL); | |
1852 | } | |
1853 | ||
1854 | relocation = h->plt.offset; | |
44f745a6 | 1855 | unresolved_reloc = FALSE; |
252b5132 RH |
1856 | |
1857 | /* This relocation does not use the addend. */ | |
1858 | rel->r_addend = 0; | |
1859 | ||
1860 | break; | |
1861 | ||
1862 | case R_68K_PC8: | |
1863 | case R_68K_PC16: | |
1864 | case R_68K_PC32: | |
b6152c34 AS |
1865 | if (h == NULL |
1866 | || (info->shared | |
f5385ebf | 1867 | && h->forced_local)) |
252b5132 RH |
1868 | break; |
1869 | /* Fall through. */ | |
1870 | case R_68K_8: | |
1871 | case R_68K_16: | |
1872 | case R_68K_32: | |
1873 | if (info->shared | |
ec338859 | 1874 | && r_symndx != 0 |
252b5132 | 1875 | && (input_section->flags & SEC_ALLOC) != 0 |
d2ff124f AS |
1876 | && (h == NULL |
1877 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1878 | || h->root.type != bfd_link_hash_undefweak) | |
252b5132 RH |
1879 | && ((r_type != R_68K_PC8 |
1880 | && r_type != R_68K_PC16 | |
1881 | && r_type != R_68K_PC32) | |
d2ff124f AS |
1882 | || (h != NULL |
1883 | && h->dynindx != -1 | |
1884 | && (!info->symbolic | |
f5385ebf | 1885 | || !h->def_regular)))) |
252b5132 RH |
1886 | { |
1887 | Elf_Internal_Rela outrel; | |
947216bf | 1888 | bfd_byte *loc; |
b34976b6 | 1889 | bfd_boolean skip, relocate; |
252b5132 RH |
1890 | |
1891 | /* When generating a shared object, these relocations | |
1892 | are copied into the output file to be resolved at run | |
1893 | time. */ | |
1894 | ||
b34976b6 AM |
1895 | skip = FALSE; |
1896 | relocate = FALSE; | |
252b5132 | 1897 | |
c629eae0 JJ |
1898 | outrel.r_offset = |
1899 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1900 | rel->r_offset); | |
1901 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1902 | skip = TRUE; |
0bb2d96a | 1903 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1904 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
1905 | outrel.r_offset += (input_section->output_section->vma |
1906 | + input_section->output_offset); | |
1907 | ||
1908 | if (skip) | |
0bb2d96a | 1909 | memset (&outrel, 0, sizeof outrel); |
252b5132 | 1910 | else if (h != NULL |
d2ff124f AS |
1911 | && h->dynindx != -1 |
1912 | && (r_type == R_68K_PC8 | |
1913 | || r_type == R_68K_PC16 | |
1914 | || r_type == R_68K_PC32 | |
1915 | || !info->shared | |
1916 | || !info->symbolic | |
f5385ebf | 1917 | || !h->def_regular)) |
252b5132 | 1918 | { |
252b5132 | 1919 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
d2ff124f | 1920 | outrel.r_addend = rel->r_addend; |
252b5132 RH |
1921 | } |
1922 | else | |
1923 | { | |
d2ff124f | 1924 | /* This symbol is local, or marked to become local. */ |
74541ad4 AM |
1925 | outrel.r_addend = relocation + rel->r_addend; |
1926 | ||
252b5132 RH |
1927 | if (r_type == R_68K_32) |
1928 | { | |
b34976b6 | 1929 | relocate = TRUE; |
252b5132 | 1930 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); |
252b5132 RH |
1931 | } |
1932 | else | |
1933 | { | |
1934 | long indx; | |
1935 | ||
8517fae7 | 1936 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
1937 | indx = 0; |
1938 | else if (sec == NULL || sec->owner == NULL) | |
1939 | { | |
1940 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1941 | return FALSE; |
252b5132 RH |
1942 | } |
1943 | else | |
1944 | { | |
1945 | asection *osec; | |
1946 | ||
74541ad4 AM |
1947 | /* We are turning this relocation into one |
1948 | against a section symbol. It would be | |
1949 | proper to subtract the symbol's value, | |
1950 | osec->vma, from the emitted reloc addend, | |
1951 | but ld.so expects buggy relocs. */ | |
252b5132 RH |
1952 | osec = sec->output_section; |
1953 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
1954 | if (indx == 0) |
1955 | { | |
1956 | struct elf_link_hash_table *htab; | |
1957 | htab = elf_hash_table (info); | |
1958 | osec = htab->text_index_section; | |
1959 | indx = elf_section_data (osec)->dynindx; | |
1960 | } | |
1961 | BFD_ASSERT (indx != 0); | |
252b5132 RH |
1962 | } |
1963 | ||
252b5132 | 1964 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
252b5132 RH |
1965 | } |
1966 | } | |
1967 | ||
d2ff124f AS |
1968 | sreloc = elf_section_data (input_section)->sreloc; |
1969 | if (sreloc == NULL) | |
1970 | abort (); | |
1971 | ||
947216bf AM |
1972 | loc = sreloc->contents; |
1973 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1974 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
1975 | |
1976 | /* This reloc will be computed at runtime, so there's no | |
1977 | need to do anything now, except for R_68K_32 | |
1978 | relocations that have been turned into | |
1979 | R_68K_RELATIVE. */ | |
1980 | if (!relocate) | |
1981 | continue; | |
1982 | } | |
1983 | ||
1984 | break; | |
1985 | ||
1986 | case R_68K_GNU_VTINHERIT: | |
1987 | case R_68K_GNU_VTENTRY: | |
1988 | /* These are no-ops in the end. */ | |
1989 | continue; | |
1990 | ||
1991 | default: | |
1992 | break; | |
1993 | } | |
1994 | ||
44f745a6 AS |
1995 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
1996 | because such sections are not SEC_ALLOC and thus ld.so will | |
1997 | not process them. */ | |
1998 | if (unresolved_reloc | |
1999 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 2000 | && h->def_dynamic)) |
44f745a6 AS |
2001 | { |
2002 | (*_bfd_error_handler) | |
843fe662 | 2003 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
2004 | input_bfd, |
2005 | input_section, | |
44f745a6 | 2006 | (long) rel->r_offset, |
843fe662 | 2007 | howto->name, |
44f745a6 AS |
2008 | h->root.root.string); |
2009 | return FALSE; | |
2010 | } | |
2011 | ||
252b5132 RH |
2012 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
2013 | contents, rel->r_offset, | |
2014 | relocation, rel->r_addend); | |
2015 | ||
2016 | if (r != bfd_reloc_ok) | |
2017 | { | |
44f745a6 AS |
2018 | const char *name; |
2019 | ||
2020 | if (h != NULL) | |
2021 | name = h->root.root.string; | |
2022 | else | |
252b5132 | 2023 | { |
44f745a6 AS |
2024 | name = bfd_elf_string_from_elf_section (input_bfd, |
2025 | symtab_hdr->sh_link, | |
2026 | sym->st_name); | |
2027 | if (name == NULL) | |
2028 | return FALSE; | |
2029 | if (*name == '\0') | |
2030 | name = bfd_section_name (input_bfd, sec); | |
2031 | } | |
252b5132 | 2032 | |
44f745a6 AS |
2033 | if (r == bfd_reloc_overflow) |
2034 | { | |
2035 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
2036 | (info, (h ? &h->root : NULL), name, howto->name, |
2037 | (bfd_vma) 0, input_bfd, input_section, | |
2038 | rel->r_offset))) | |
44f745a6 AS |
2039 | return FALSE; |
2040 | } | |
2041 | else | |
2042 | { | |
2043 | (*_bfd_error_handler) | |
d003868e AM |
2044 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
2045 | input_bfd, input_section, | |
44f745a6 AS |
2046 | (long) rel->r_offset, name, (int) r); |
2047 | return FALSE; | |
252b5132 RH |
2048 | } |
2049 | } | |
2050 | } | |
2051 | ||
b34976b6 | 2052 | return TRUE; |
252b5132 RH |
2053 | } |
2054 | ||
cc3e26be RS |
2055 | /* Install an M_68K_PC32 relocation against VALUE at offset OFFSET |
2056 | into section SEC. */ | |
2057 | ||
2058 | static void | |
2059 | elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value) | |
2060 | { | |
2061 | /* Make VALUE PC-relative. */ | |
2062 | value -= sec->output_section->vma + offset; | |
2063 | ||
2064 | /* Apply any in-place addend. */ | |
2065 | value += bfd_get_32 (sec->owner, sec->contents + offset); | |
2066 | ||
2067 | bfd_put_32 (sec->owner, value, sec->contents + offset); | |
2068 | } | |
2069 | ||
252b5132 RH |
2070 | /* Finish up dynamic symbol handling. We set the contents of various |
2071 | dynamic sections here. */ | |
2072 | ||
b34976b6 | 2073 | static bfd_boolean |
252b5132 RH |
2074 | elf_m68k_finish_dynamic_symbol (output_bfd, info, h, sym) |
2075 | bfd *output_bfd; | |
2076 | struct bfd_link_info *info; | |
2077 | struct elf_link_hash_entry *h; | |
2078 | Elf_Internal_Sym *sym; | |
2079 | { | |
2080 | bfd *dynobj; | |
2081 | ||
2082 | dynobj = elf_hash_table (info)->dynobj; | |
2083 | ||
2084 | if (h->plt.offset != (bfd_vma) -1) | |
2085 | { | |
cc3e26be | 2086 | const struct elf_m68k_plt_info *plt_info; |
252b5132 RH |
2087 | asection *splt; |
2088 | asection *sgot; | |
2089 | asection *srela; | |
2090 | bfd_vma plt_index; | |
2091 | bfd_vma got_offset; | |
2092 | Elf_Internal_Rela rela; | |
947216bf | 2093 | bfd_byte *loc; |
252b5132 RH |
2094 | |
2095 | /* This symbol has an entry in the procedure linkage table. Set | |
2096 | it up. */ | |
2097 | ||
2098 | BFD_ASSERT (h->dynindx != -1); | |
2099 | ||
cc3e26be | 2100 | plt_info = elf_m68k_hash_table (info)->plt_info; |
252b5132 RH |
2101 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
2102 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2103 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2104 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
2105 | ||
2106 | /* Get the index in the procedure linkage table which | |
2107 | corresponds to this symbol. This is the index of this symbol | |
2108 | in all the symbols for which we are making plt entries. The | |
2109 | first entry in the procedure linkage table is reserved. */ | |
cc3e26be | 2110 | plt_index = (h->plt.offset / plt_info->size) - 1; |
252b5132 RH |
2111 | |
2112 | /* Get the offset into the .got table of the entry that | |
2113 | corresponds to this function. Each .got entry is 4 bytes. | |
2114 | The first three are reserved. */ | |
2115 | got_offset = (plt_index + 3) * 4; | |
2116 | ||
cc3e26be RS |
2117 | memcpy (splt->contents + h->plt.offset, |
2118 | plt_info->symbol_entry, | |
2119 | plt_info->size); | |
2120 | ||
2121 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got, | |
2122 | (sgot->output_section->vma | |
2123 | + sgot->output_offset | |
2124 | + got_offset)); | |
252b5132 RH |
2125 | |
2126 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
cc3e26be RS |
2127 | splt->contents |
2128 | + h->plt.offset | |
2129 | + plt_info->symbol_resolve_entry + 2); | |
2130 | ||
2131 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt, | |
2132 | splt->output_section->vma); | |
252b5132 RH |
2133 | |
2134 | /* Fill in the entry in the global offset table. */ | |
2135 | bfd_put_32 (output_bfd, | |
2136 | (splt->output_section->vma | |
2137 | + splt->output_offset | |
2138 | + h->plt.offset | |
cc3e26be | 2139 | + plt_info->symbol_resolve_entry), |
252b5132 RH |
2140 | sgot->contents + got_offset); |
2141 | ||
2142 | /* Fill in the entry in the .rela.plt section. */ | |
2143 | rela.r_offset = (sgot->output_section->vma | |
2144 | + sgot->output_offset | |
2145 | + got_offset); | |
2146 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT); | |
2147 | rela.r_addend = 0; | |
947216bf AM |
2148 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
2149 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 | 2150 | |
f5385ebf | 2151 | if (!h->def_regular) |
252b5132 RH |
2152 | { |
2153 | /* Mark the symbol as undefined, rather than as defined in | |
2154 | the .plt section. Leave the value alone. */ | |
2155 | sym->st_shndx = SHN_UNDEF; | |
2156 | } | |
2157 | } | |
2158 | ||
2159 | if (h->got.offset != (bfd_vma) -1) | |
2160 | { | |
2161 | asection *sgot; | |
2162 | asection *srela; | |
2163 | Elf_Internal_Rela rela; | |
947216bf | 2164 | bfd_byte *loc; |
252b5132 RH |
2165 | |
2166 | /* This symbol has an entry in the global offset table. Set it | |
2167 | up. */ | |
2168 | ||
2169 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2170 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2171 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
2172 | ||
2173 | rela.r_offset = (sgot->output_section->vma | |
2174 | + sgot->output_offset | |
dc810e39 | 2175 | + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
2176 | |
2177 | /* If this is a -Bsymbolic link, and the symbol is defined | |
2178 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
2179 | the symbol was forced to be local because of a version file. | |
2180 | The entry in the global offset table will already have been | |
2181 | initialized in the relocate_section function. */ | |
2182 | if (info->shared | |
a5ad465a AS |
2183 | && (info->symbolic |
2184 | || h->dynindx == -1 | |
f5385ebf AM |
2185 | || h->forced_local) |
2186 | && h->def_regular) | |
252b5132 RH |
2187 | { |
2188 | rela.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
2189 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
2190 | (sgot->contents | |
dc810e39 | 2191 | + (h->got.offset &~ (bfd_vma) 1))); |
252b5132 RH |
2192 | } |
2193 | else | |
2194 | { | |
2195 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
dc810e39 | 2196 | sgot->contents + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 RH |
2197 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT); |
2198 | rela.r_addend = 0; | |
2199 | } | |
2200 | ||
947216bf AM |
2201 | loc = srela->contents; |
2202 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
2203 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
2204 | } |
2205 | ||
f5385ebf | 2206 | if (h->needs_copy) |
252b5132 RH |
2207 | { |
2208 | asection *s; | |
2209 | Elf_Internal_Rela rela; | |
947216bf | 2210 | bfd_byte *loc; |
252b5132 RH |
2211 | |
2212 | /* This symbol needs a copy reloc. Set it up. */ | |
2213 | ||
2214 | BFD_ASSERT (h->dynindx != -1 | |
2215 | && (h->root.type == bfd_link_hash_defined | |
2216 | || h->root.type == bfd_link_hash_defweak)); | |
2217 | ||
2218 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
2219 | ".rela.bss"); | |
2220 | BFD_ASSERT (s != NULL); | |
2221 | ||
2222 | rela.r_offset = (h->root.u.def.value | |
2223 | + h->root.u.def.section->output_section->vma | |
2224 | + h->root.u.def.section->output_offset); | |
2225 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY); | |
2226 | rela.r_addend = 0; | |
947216bf AM |
2227 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
2228 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
2229 | } |
2230 | ||
2231 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
2232 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 | 2233 | || h == elf_hash_table (info)->hgot) |
252b5132 RH |
2234 | sym->st_shndx = SHN_ABS; |
2235 | ||
b34976b6 | 2236 | return TRUE; |
252b5132 RH |
2237 | } |
2238 | ||
2239 | /* Finish up the dynamic sections. */ | |
2240 | ||
b34976b6 | 2241 | static bfd_boolean |
252b5132 RH |
2242 | elf_m68k_finish_dynamic_sections (output_bfd, info) |
2243 | bfd *output_bfd; | |
2244 | struct bfd_link_info *info; | |
2245 | { | |
2246 | bfd *dynobj; | |
2247 | asection *sgot; | |
2248 | asection *sdyn; | |
2249 | ||
2250 | dynobj = elf_hash_table (info)->dynobj; | |
2251 | ||
2252 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2253 | BFD_ASSERT (sgot != NULL); | |
2254 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2255 | ||
2256 | if (elf_hash_table (info)->dynamic_sections_created) | |
2257 | { | |
2258 | asection *splt; | |
2259 | Elf32_External_Dyn *dyncon, *dynconend; | |
2260 | ||
2261 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2262 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2263 | ||
2264 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 2265 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
2266 | for (; dyncon < dynconend; dyncon++) |
2267 | { | |
2268 | Elf_Internal_Dyn dyn; | |
2269 | const char *name; | |
2270 | asection *s; | |
2271 | ||
2272 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2273 | ||
2274 | switch (dyn.d_tag) | |
2275 | { | |
2276 | default: | |
2277 | break; | |
2278 | ||
2279 | case DT_PLTGOT: | |
2280 | name = ".got"; | |
2281 | goto get_vma; | |
2282 | case DT_JMPREL: | |
2283 | name = ".rela.plt"; | |
2284 | get_vma: | |
2285 | s = bfd_get_section_by_name (output_bfd, name); | |
2286 | BFD_ASSERT (s != NULL); | |
2287 | dyn.d_un.d_ptr = s->vma; | |
2288 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2289 | break; | |
2290 | ||
2291 | case DT_PLTRELSZ: | |
2292 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2293 | BFD_ASSERT (s != NULL); | |
eea6121a | 2294 | dyn.d_un.d_val = s->size; |
252b5132 RH |
2295 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2296 | break; | |
2297 | ||
2298 | case DT_RELASZ: | |
2299 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2300 | not be included in the overall relocs (DT_RELA). | |
2301 | Therefore, we override the DT_RELASZ entry here to | |
2302 | make it not include the JMPREL relocs. Since the | |
2303 | linker script arranges for .rela.plt to follow all | |
2304 | other relocation sections, we don't have to worry | |
2305 | about changing the DT_RELA entry. */ | |
2306 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2307 | if (s != NULL) | |
eea6121a | 2308 | dyn.d_un.d_val -= s->size; |
252b5132 RH |
2309 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2310 | break; | |
2311 | } | |
2312 | } | |
2313 | ||
2314 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2315 | if (splt->size > 0) |
252b5132 | 2316 | { |
cc3e26be RS |
2317 | const struct elf_m68k_plt_info *plt_info; |
2318 | ||
2319 | plt_info = elf_m68k_hash_table (info)->plt_info; | |
2320 | memcpy (splt->contents, plt_info->plt0_entry, plt_info->size); | |
2321 | ||
2322 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4, | |
2323 | (sgot->output_section->vma | |
2324 | + sgot->output_offset | |
2325 | + 4)); | |
2326 | ||
2327 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8, | |
2328 | (sgot->output_section->vma | |
2329 | + sgot->output_offset | |
2330 | + 8)); | |
2331 | ||
2332 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
2333 | = plt_info->size; | |
252b5132 | 2334 | } |
252b5132 RH |
2335 | } |
2336 | ||
2337 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2338 | if (sgot->size > 0) |
252b5132 RH |
2339 | { |
2340 | if (sdyn == NULL) | |
2341 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2342 | else | |
2343 | bfd_put_32 (output_bfd, | |
2344 | sdyn->output_section->vma + sdyn->output_offset, | |
2345 | sgot->contents); | |
2346 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2347 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2348 | } | |
2349 | ||
2350 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2351 | ||
b34976b6 | 2352 | return TRUE; |
252b5132 RH |
2353 | } |
2354 | ||
0752970e NC |
2355 | /* Given a .data section and a .emreloc in-memory section, store |
2356 | relocation information into the .emreloc section which can be | |
2357 | used at runtime to relocate the section. This is called by the | |
2358 | linker when the --embedded-relocs switch is used. This is called | |
2359 | after the add_symbols entry point has been called for all the | |
2360 | objects, and before the final_link entry point is called. */ | |
2361 | ||
b34976b6 | 2362 | bfd_boolean |
0752970e NC |
2363 | bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) |
2364 | bfd *abfd; | |
2365 | struct bfd_link_info *info; | |
2366 | asection *datasec; | |
2367 | asection *relsec; | |
2368 | char **errmsg; | |
2369 | { | |
2370 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc AM |
2371 | Elf_Internal_Sym *isymbuf = NULL; |
2372 | Elf_Internal_Rela *internal_relocs = NULL; | |
0752970e NC |
2373 | Elf_Internal_Rela *irel, *irelend; |
2374 | bfd_byte *p; | |
dc810e39 | 2375 | bfd_size_type amt; |
0752970e | 2376 | |
1049f94e | 2377 | BFD_ASSERT (! info->relocatable); |
0752970e NC |
2378 | |
2379 | *errmsg = NULL; | |
2380 | ||
2381 | if (datasec->reloc_count == 0) | |
b34976b6 | 2382 | return TRUE; |
0752970e NC |
2383 | |
2384 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
9ad5cbcf | 2385 | |
0752970e | 2386 | /* Get a copy of the native relocations. */ |
45d6a902 | 2387 | internal_relocs = (_bfd_elf_link_read_relocs |
0752970e NC |
2388 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
2389 | info->keep_memory)); | |
2390 | if (internal_relocs == NULL) | |
2391 | goto error_return; | |
0752970e | 2392 | |
dc810e39 AM |
2393 | amt = (bfd_size_type) datasec->reloc_count * 12; |
2394 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
0752970e NC |
2395 | if (relsec->contents == NULL) |
2396 | goto error_return; | |
2397 | ||
2398 | p = relsec->contents; | |
2399 | ||
2400 | irelend = internal_relocs + datasec->reloc_count; | |
2401 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
2402 | { | |
2403 | asection *targetsec; | |
2404 | ||
2405 | /* We are going to write a four byte longword into the runtime | |
2406 | reloc section. The longword will be the address in the data | |
2407 | section which must be relocated. It is followed by the name | |
2408 | of the target section NUL-padded or truncated to 8 | |
2409 | characters. */ | |
2410 | ||
2411 | /* We can only relocate absolute longword relocs at run time. */ | |
2412 | if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32) | |
2413 | { | |
2414 | *errmsg = _("unsupported reloc type"); | |
2415 | bfd_set_error (bfd_error_bad_value); | |
2416 | goto error_return; | |
2417 | } | |
2418 | ||
2419 | /* Get the target section referred to by the reloc. */ | |
2420 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2421 | { | |
0752970e | 2422 | /* A local symbol. */ |
6cdc0ccc AM |
2423 | Elf_Internal_Sym *isym; |
2424 | ||
2425 | /* Read this BFD's local symbols if we haven't done so already. */ | |
2426 | if (isymbuf == NULL) | |
2427 | { | |
2428 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2429 | if (isymbuf == NULL) | |
2430 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2431 | symtab_hdr->sh_info, 0, | |
2432 | NULL, NULL, NULL); | |
2433 | if (isymbuf == NULL) | |
2434 | goto error_return; | |
2435 | } | |
0752970e | 2436 | |
6cdc0ccc AM |
2437 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
2438 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
0752970e NC |
2439 | } |
2440 | else | |
2441 | { | |
2442 | unsigned long indx; | |
2443 | struct elf_link_hash_entry *h; | |
2444 | ||
2445 | /* An external symbol. */ | |
2446 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2447 | h = elf_sym_hashes (abfd)[indx]; | |
2448 | BFD_ASSERT (h != NULL); | |
2449 | if (h->root.type == bfd_link_hash_defined | |
2450 | || h->root.type == bfd_link_hash_defweak) | |
2451 | targetsec = h->root.u.def.section; | |
2452 | else | |
2453 | targetsec = NULL; | |
2454 | } | |
2455 | ||
2456 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
2457 | memset (p + 4, 0, 8); | |
2458 | if (targetsec != NULL) | |
f075ee0c | 2459 | strncpy ((char *) p + 4, targetsec->output_section->name, 8); |
0752970e | 2460 | } |
c3668558 | 2461 | |
6cdc0ccc AM |
2462 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
2463 | free (isymbuf); | |
2464 | if (internal_relocs != NULL | |
2465 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2466 | free (internal_relocs); | |
b34976b6 | 2467 | return TRUE; |
0752970e NC |
2468 | |
2469 | error_return: | |
6cdc0ccc AM |
2470 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
2471 | free (isymbuf); | |
2472 | if (internal_relocs != NULL | |
2473 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2474 | free (internal_relocs); | |
b34976b6 | 2475 | return FALSE; |
0752970e NC |
2476 | } |
2477 | ||
aa91b392 | 2478 | static enum elf_reloc_type_class |
f51e552e AM |
2479 | elf32_m68k_reloc_type_class (rela) |
2480 | const Elf_Internal_Rela *rela; | |
aa91b392 | 2481 | { |
f51e552e | 2482 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
aa91b392 AS |
2483 | { |
2484 | case R_68K_RELATIVE: | |
2485 | return reloc_class_relative; | |
2486 | case R_68K_JMP_SLOT: | |
2487 | return reloc_class_plt; | |
2488 | case R_68K_COPY: | |
2489 | return reloc_class_copy; | |
2490 | default: | |
2491 | return reloc_class_normal; | |
2492 | } | |
2493 | } | |
2494 | ||
1715e0e3 AS |
2495 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
2496 | or (bfd_vma) -1 if it should not be included. */ | |
2497 | ||
2498 | static bfd_vma | |
2499 | elf_m68k_plt_sym_val (bfd_vma i, const asection *plt, | |
2500 | const arelent *rel ATTRIBUTE_UNUSED) | |
2501 | { | |
cc3e26be | 2502 | return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size; |
1715e0e3 AS |
2503 | } |
2504 | ||
252b5132 RH |
2505 | #define TARGET_BIG_SYM bfd_elf32_m68k_vec |
2506 | #define TARGET_BIG_NAME "elf32-m68k" | |
2507 | #define ELF_MACHINE_CODE EM_68K | |
2508 | #define ELF_MAXPAGESIZE 0x2000 | |
2509 | #define elf_backend_create_dynamic_sections \ | |
2510 | _bfd_elf_create_dynamic_sections | |
2511 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2512 | elf_m68k_link_hash_table_create | |
c152c796 | 2513 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
252b5132 RH |
2514 | |
2515 | #define elf_backend_check_relocs elf_m68k_check_relocs | |
cc3e26be RS |
2516 | #define elf_backend_always_size_sections \ |
2517 | elf_m68k_always_size_sections | |
252b5132 RH |
2518 | #define elf_backend_adjust_dynamic_symbol \ |
2519 | elf_m68k_adjust_dynamic_symbol | |
2520 | #define elf_backend_size_dynamic_sections \ | |
2521 | elf_m68k_size_dynamic_sections | |
74541ad4 | 2522 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
252b5132 RH |
2523 | #define elf_backend_relocate_section elf_m68k_relocate_section |
2524 | #define elf_backend_finish_dynamic_symbol \ | |
2525 | elf_m68k_finish_dynamic_symbol | |
2526 | #define elf_backend_finish_dynamic_sections \ | |
2527 | elf_m68k_finish_dynamic_sections | |
2528 | #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook | |
2529 | #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook | |
9e1281c7 CM |
2530 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
2531 | elf32_m68k_merge_private_bfd_data | |
2532 | #define bfd_elf32_bfd_set_private_flags \ | |
2533 | elf32_m68k_set_private_flags | |
2534 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2535 | elf32_m68k_print_private_bfd_data | |
aa91b392 | 2536 | #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class |
1715e0e3 | 2537 | #define elf_backend_plt_sym_val elf_m68k_plt_sym_val |
266abb8f | 2538 | #define elf_backend_object_p elf32_m68k_object_p |
9e1281c7 | 2539 | |
252b5132 | 2540 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 2541 | #define elf_backend_can_refcount 1 |
252b5132 RH |
2542 | #define elf_backend_want_got_plt 1 |
2543 | #define elf_backend_plt_readonly 1 | |
2544 | #define elf_backend_want_plt_sym 0 | |
2545 | #define elf_backend_got_header_size 12 | |
b491616a | 2546 | #define elf_backend_rela_normal 1 |
252b5132 RH |
2547 | |
2548 | #include "elf32-target.h" |