Commit | Line | Data |
---|---|---|
8d88c4ca | 1 | /* X86-64 specific support for 64-bit ELF |
67a4f2b7 | 2 | Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
3eb128b2 | 3 | Free Software Foundation, Inc. |
8d88c4ca NC |
4 | Contributed by Jan Hubicka <jh@suse.cz>. |
5 | ||
ae9a127f | 6 | This file is part of BFD, the Binary File Descriptor library. |
8d88c4ca | 7 | |
ae9a127f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
8d88c4ca | 12 | |
ae9a127f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
8d88c4ca | 17 | |
ae9a127f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
8d88c4ca NC |
21 | |
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
c434dee6 | 24 | #include "bfdlink.h" |
8d88c4ca NC |
25 | #include "libbfd.h" |
26 | #include "elf-bfd.h" | |
27 | ||
28 | #include "elf/x86-64.h" | |
29 | ||
8d88c4ca NC |
30 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ |
31 | #define MINUS_ONE (~ (bfd_vma) 0) | |
32 | ||
33 | /* The relocation "howto" table. Order of fields: | |
407443a3 AJ |
34 | type, size, bitsize, pc_relative, complain_on_overflow, |
35 | special_function, name, partial_inplace, src_mask, dst_pack, pcrel_offset. */ | |
70256ad8 AJ |
36 | static reloc_howto_type x86_64_elf_howto_table[] = |
37 | { | |
b34976b6 AM |
38 | HOWTO(R_X86_64_NONE, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
39 | bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000, | |
40 | FALSE), | |
41 | HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
42 | bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE, | |
43 | FALSE), | |
44 | HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
45 | bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff, | |
46 | TRUE), | |
47 | HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
48 | bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff, | |
49 | FALSE), | |
50 | HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
51 | bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff, | |
52 | TRUE), | |
53 | HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
54 | bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff, | |
55 | FALSE), | |
56 | HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
57 | bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE, | |
58 | MINUS_ONE, FALSE), | |
59 | HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
60 | bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE, | |
61 | MINUS_ONE, FALSE), | |
62 | HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
63 | bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE, | |
64 | MINUS_ONE, FALSE), | |
65 | HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
66 | bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff, | |
67 | 0xffffffff, TRUE), | |
68 | HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned, | |
69 | bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff, | |
70 | FALSE), | |
71 | HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
72 | bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff, | |
73 | FALSE), | |
74 | HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
75 | bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE), | |
b0360d8c | 76 | HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield, |
b34976b6 | 77 | bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE), |
ac2aa337 | 78 | HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
b34976b6 AM |
79 | bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE), |
80 | HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
81 | bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE), | |
82 | HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
83 | bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE, | |
84 | MINUS_ONE, FALSE), | |
85 | HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
86 | bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE, | |
87 | MINUS_ONE, FALSE), | |
88 | HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
89 | bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE, | |
90 | MINUS_ONE, FALSE), | |
91 | HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
92 | bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff, | |
93 | 0xffffffff, TRUE), | |
94 | HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
95 | bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff, | |
96 | 0xffffffff, TRUE), | |
ac2aa337 | 97 | HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed, |
b34976b6 AM |
98 | bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff, |
99 | 0xffffffff, FALSE), | |
100 | HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
101 | bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff, | |
102 | 0xffffffff, TRUE), | |
103 | HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
104 | bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff, | |
105 | 0xffffffff, FALSE), | |
d6ab8113 JB |
106 | HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
107 | bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE, | |
108 | TRUE), | |
109 | HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
110 | bfd_elf_generic_reloc, "R_X86_64_GOTOFF64", | |
111 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
112 | HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
113 | bfd_elf_generic_reloc, "R_X86_64_GOTPC32", | |
114 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
67a4f2b7 AO |
115 | EMPTY_HOWTO (27), |
116 | EMPTY_HOWTO (28), | |
117 | EMPTY_HOWTO (29), | |
118 | EMPTY_HOWTO (30), | |
119 | EMPTY_HOWTO (31), | |
120 | EMPTY_HOWTO (32), | |
121 | EMPTY_HOWTO (33), | |
122 | HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0, | |
123 | complain_overflow_bitfield, bfd_elf_generic_reloc, | |
124 | "R_X86_64_GOTPC32_TLSDESC", | |
125 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
126 | HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0, | |
127 | complain_overflow_dont, bfd_elf_generic_reloc, | |
128 | "R_X86_64_TLSDESC_CALL", | |
129 | FALSE, 0, 0, FALSE), | |
130 | HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0, | |
131 | complain_overflow_bitfield, bfd_elf_generic_reloc, | |
132 | "R_X86_64_TLSDESC", | |
133 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
fe4770f4 | 134 | |
a33d77bc JB |
135 | /* We have a gap in the reloc numbers here. |
136 | R_X86_64_standard counts the number up to this point, and | |
137 | R_X86_64_vt_offset is the value to subtract from a reloc type of | |
138 | R_X86_64_GNU_VT* to form an index into this table. */ | |
67a4f2b7 | 139 | #define R_X86_64_standard (R_X86_64_TLSDESC + 1) |
a33d77bc JB |
140 | #define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard) |
141 | ||
fe4770f4 | 142 | /* GNU extension to record C++ vtable hierarchy. */ |
b34976b6 AM |
143 | HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
144 | NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE), | |
fe4770f4 AJ |
145 | |
146 | /* GNU extension to record C++ vtable member usage. */ | |
b34976b6 AM |
147 | HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
148 | _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0, | |
149 | FALSE) | |
8d88c4ca NC |
150 | }; |
151 | ||
152 | /* Map BFD relocs to the x86_64 elf relocs. */ | |
70256ad8 AJ |
153 | struct elf_reloc_map |
154 | { | |
8d88c4ca NC |
155 | bfd_reloc_code_real_type bfd_reloc_val; |
156 | unsigned char elf_reloc_val; | |
157 | }; | |
158 | ||
dc810e39 | 159 | static const struct elf_reloc_map x86_64_reloc_map[] = |
8d88c4ca | 160 | { |
70256ad8 AJ |
161 | { BFD_RELOC_NONE, R_X86_64_NONE, }, |
162 | { BFD_RELOC_64, R_X86_64_64, }, | |
163 | { BFD_RELOC_32_PCREL, R_X86_64_PC32, }, | |
164 | { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,}, | |
165 | { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,}, | |
166 | { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, }, | |
167 | { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, }, | |
168 | { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, }, | |
169 | { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, }, | |
170 | { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, }, | |
171 | { BFD_RELOC_32, R_X86_64_32, }, | |
172 | { BFD_RELOC_X86_64_32S, R_X86_64_32S, }, | |
173 | { BFD_RELOC_16, R_X86_64_16, }, | |
174 | { BFD_RELOC_16_PCREL, R_X86_64_PC16, }, | |
175 | { BFD_RELOC_8, R_X86_64_8, }, | |
176 | { BFD_RELOC_8_PCREL, R_X86_64_PC8, }, | |
bffbf940 JJ |
177 | { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, }, |
178 | { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, }, | |
179 | { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, }, | |
180 | { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, }, | |
181 | { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, }, | |
182 | { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, }, | |
183 | { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, }, | |
184 | { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, }, | |
d6ab8113 JB |
185 | { BFD_RELOC_64_PCREL, R_X86_64_PC64, }, |
186 | { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, }, | |
187 | { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, }, | |
67a4f2b7 AO |
188 | { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, }, |
189 | { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, }, | |
190 | { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, }, | |
fe4770f4 AJ |
191 | { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, }, |
192 | { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, }, | |
8d88c4ca NC |
193 | }; |
194 | ||
67a4f2b7 AO |
195 | static reloc_howto_type * |
196 | elf64_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type) | |
197 | { | |
198 | unsigned i; | |
199 | ||
200 | if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT | |
201 | || r_type >= (unsigned int) R_X86_64_max) | |
202 | { | |
203 | if (r_type >= (unsigned int) R_X86_64_standard) | |
204 | { | |
205 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
206 | abfd, (int) r_type); | |
207 | r_type = R_X86_64_NONE; | |
208 | } | |
209 | i = r_type; | |
210 | } | |
211 | else | |
212 | i = r_type - (unsigned int) R_X86_64_vt_offset; | |
213 | BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type); | |
214 | return &x86_64_elf_howto_table[i]; | |
215 | } | |
8d88c4ca NC |
216 | |
217 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
218 | static reloc_howto_type * | |
67a4f2b7 | 219 | elf64_x86_64_reloc_type_lookup (bfd *abfd, |
27482721 | 220 | bfd_reloc_code_real_type code) |
8d88c4ca NC |
221 | { |
222 | unsigned int i; | |
27482721 | 223 | |
8d88c4ca NC |
224 | for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map); |
225 | i++) | |
226 | { | |
227 | if (x86_64_reloc_map[i].bfd_reloc_val == code) | |
67a4f2b7 AO |
228 | return elf64_x86_64_rtype_to_howto (abfd, |
229 | x86_64_reloc_map[i].elf_reloc_val); | |
8d88c4ca NC |
230 | } |
231 | return 0; | |
232 | } | |
233 | ||
8d88c4ca | 234 | /* Given an x86_64 ELF reloc type, fill in an arelent structure. */ |
8da6118f | 235 | |
8d88c4ca | 236 | static void |
27482721 AJ |
237 | elf64_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
238 | Elf_Internal_Rela *dst) | |
8d88c4ca | 239 | { |
67a4f2b7 | 240 | unsigned r_type; |
8d88c4ca NC |
241 | |
242 | r_type = ELF64_R_TYPE (dst->r_info); | |
67a4f2b7 | 243 | cache_ptr->howto = elf64_x86_64_rtype_to_howto (abfd, r_type); |
8d88c4ca NC |
244 | BFD_ASSERT (r_type == cache_ptr->howto->type); |
245 | } | |
70256ad8 | 246 | \f |
3bab7989 | 247 | /* Support for core dump NOTE sections. */ |
b34976b6 | 248 | static bfd_boolean |
27482721 | 249 | elf64_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
250 | { |
251 | int offset; | |
eea6121a | 252 | size_t size; |
3bab7989 ML |
253 | |
254 | switch (note->descsz) | |
255 | { | |
256 | default: | |
b34976b6 | 257 | return FALSE; |
3bab7989 ML |
258 | |
259 | case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */ | |
260 | /* pr_cursig */ | |
cedb70c5 | 261 | elf_tdata (abfd)->core_signal |
3bab7989 ML |
262 | = bfd_get_16 (abfd, note->descdata + 12); |
263 | ||
264 | /* pr_pid */ | |
cedb70c5 | 265 | elf_tdata (abfd)->core_pid |
3bab7989 ML |
266 | = bfd_get_32 (abfd, note->descdata + 32); |
267 | ||
268 | /* pr_reg */ | |
269 | offset = 112; | |
eea6121a | 270 | size = 216; |
3bab7989 ML |
271 | |
272 | break; | |
273 | } | |
274 | ||
275 | /* Make a ".reg/999" section. */ | |
276 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 277 | size, note->descpos + offset); |
3bab7989 ML |
278 | } |
279 | ||
b34976b6 | 280 | static bfd_boolean |
27482721 | 281 | elf64_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
282 | { |
283 | switch (note->descsz) | |
284 | { | |
285 | default: | |
b34976b6 | 286 | return FALSE; |
3bab7989 ML |
287 | |
288 | case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */ | |
289 | elf_tdata (abfd)->core_program | |
290 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
291 | elf_tdata (abfd)->core_command | |
292 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
293 | } | |
294 | ||
295 | /* Note that for some reason, a spurious space is tacked | |
296 | onto the end of the args in some (at least one anyway) | |
297 | implementations, so strip it off if it exists. */ | |
298 | ||
299 | { | |
300 | char *command = elf_tdata (abfd)->core_command; | |
301 | int n = strlen (command); | |
302 | ||
303 | if (0 < n && command[n - 1] == ' ') | |
304 | command[n - 1] = '\0'; | |
305 | } | |
306 | ||
b34976b6 | 307 | return TRUE; |
3bab7989 ML |
308 | } |
309 | \f | |
407443a3 | 310 | /* Functions for the x86-64 ELF linker. */ |
70256ad8 | 311 | |
407443a3 | 312 | /* The name of the dynamic interpreter. This is put in the .interp |
70256ad8 AJ |
313 | section. */ |
314 | ||
407443a3 | 315 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1" |
70256ad8 | 316 | |
d40d037c AJ |
317 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
318 | copying dynamic variables from a shared lib into an app's dynbss | |
319 | section, and instead use a dynamic relocation to point into the | |
320 | shared lib. */ | |
321 | #define ELIMINATE_COPY_RELOCS 1 | |
322 | ||
70256ad8 AJ |
323 | /* The size in bytes of an entry in the global offset table. */ |
324 | ||
325 | #define GOT_ENTRY_SIZE 8 | |
8d88c4ca | 326 | |
70256ad8 | 327 | /* The size in bytes of an entry in the procedure linkage table. */ |
8d88c4ca | 328 | |
70256ad8 AJ |
329 | #define PLT_ENTRY_SIZE 16 |
330 | ||
331 | /* The first entry in a procedure linkage table looks like this. See the | |
332 | SVR4 ABI i386 supplement and the x86-64 ABI to see how this works. */ | |
333 | ||
334 | static const bfd_byte elf64_x86_64_plt0_entry[PLT_ENTRY_SIZE] = | |
335 | { | |
653165cc AJ |
336 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ |
337 | 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */ | |
338 | 0x90, 0x90, 0x90, 0x90 /* pad out to 16 bytes with nops. */ | |
70256ad8 AJ |
339 | }; |
340 | ||
341 | /* Subsequent entries in a procedure linkage table look like this. */ | |
342 | ||
343 | static const bfd_byte elf64_x86_64_plt_entry[PLT_ENTRY_SIZE] = | |
344 | { | |
653165cc | 345 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ |
407443a3 | 346 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ |
653165cc | 347 | 0x68, /* pushq immediate */ |
70256ad8 AJ |
348 | 0, 0, 0, 0, /* replaced with index into relocation table. */ |
349 | 0xe9, /* jmp relative */ | |
350 | 0, 0, 0, 0 /* replaced with offset to start of .plt0. */ | |
351 | }; | |
352 | ||
353 | /* The x86-64 linker needs to keep track of the number of relocs that | |
985142a4 | 354 | it decides to copy as dynamic relocs in check_relocs for each symbol. |
c434dee6 AJ |
355 | This is so that it can later discard them if they are found to be |
356 | unnecessary. We store the information in a field extending the | |
357 | regular ELF linker hash table. */ | |
70256ad8 | 358 | |
c434dee6 | 359 | struct elf64_x86_64_dyn_relocs |
70256ad8 AJ |
360 | { |
361 | /* Next section. */ | |
c434dee6 AJ |
362 | struct elf64_x86_64_dyn_relocs *next; |
363 | ||
364 | /* The input section of the reloc. */ | |
365 | asection *sec; | |
366 | ||
367 | /* Total number of relocs copied for the input section. */ | |
70256ad8 | 368 | bfd_size_type count; |
c434dee6 AJ |
369 | |
370 | /* Number of pc-relative relocs copied for the input section. */ | |
371 | bfd_size_type pc_count; | |
70256ad8 AJ |
372 | }; |
373 | ||
374 | /* x86-64 ELF linker hash entry. */ | |
375 | ||
376 | struct elf64_x86_64_link_hash_entry | |
377 | { | |
c434dee6 | 378 | struct elf_link_hash_entry elf; |
70256ad8 | 379 | |
c434dee6 AJ |
380 | /* Track dynamic relocs copied for this symbol. */ |
381 | struct elf64_x86_64_dyn_relocs *dyn_relocs; | |
bffbf940 JJ |
382 | |
383 | #define GOT_UNKNOWN 0 | |
384 | #define GOT_NORMAL 1 | |
385 | #define GOT_TLS_GD 2 | |
386 | #define GOT_TLS_IE 3 | |
67a4f2b7 AO |
387 | #define GOT_TLS_GDESC 4 |
388 | #define GOT_TLS_GD_BOTH_P(type) \ | |
389 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
390 | #define GOT_TLS_GD_P(type) \ | |
391 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
392 | #define GOT_TLS_GDESC_P(type) \ | |
393 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
394 | #define GOT_TLS_GD_ANY_P(type) \ | |
395 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
bffbf940 | 396 | unsigned char tls_type; |
67a4f2b7 AO |
397 | |
398 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, | |
399 | starting at the end of the jump table. */ | |
400 | bfd_vma tlsdesc_got; | |
bffbf940 JJ |
401 | }; |
402 | ||
403 | #define elf64_x86_64_hash_entry(ent) \ | |
404 | ((struct elf64_x86_64_link_hash_entry *)(ent)) | |
405 | ||
406 | struct elf64_x86_64_obj_tdata | |
407 | { | |
408 | struct elf_obj_tdata root; | |
409 | ||
410 | /* tls_type for each local got entry. */ | |
411 | char *local_got_tls_type; | |
67a4f2b7 AO |
412 | |
413 | /* GOTPLT entries for TLS descriptors. */ | |
414 | bfd_vma *local_tlsdesc_gotent; | |
70256ad8 AJ |
415 | }; |
416 | ||
bffbf940 JJ |
417 | #define elf64_x86_64_tdata(abfd) \ |
418 | ((struct elf64_x86_64_obj_tdata *) (abfd)->tdata.any) | |
419 | ||
420 | #define elf64_x86_64_local_got_tls_type(abfd) \ | |
421 | (elf64_x86_64_tdata (abfd)->local_got_tls_type) | |
422 | ||
67a4f2b7 AO |
423 | #define elf64_x86_64_local_tlsdesc_gotent(abfd) \ |
424 | (elf64_x86_64_tdata (abfd)->local_tlsdesc_gotent) | |
bffbf940 | 425 | |
c434dee6 | 426 | /* x86-64 ELF linker hash table. */ |
8d88c4ca | 427 | |
407443a3 AJ |
428 | struct elf64_x86_64_link_hash_table |
429 | { | |
c434dee6 | 430 | struct elf_link_hash_table elf; |
70256ad8 | 431 | |
c434dee6 AJ |
432 | /* Short-cuts to get to dynamic linker sections. */ |
433 | asection *sgot; | |
434 | asection *sgotplt; | |
435 | asection *srelgot; | |
436 | asection *splt; | |
437 | asection *srelplt; | |
438 | asection *sdynbss; | |
439 | asection *srelbss; | |
70256ad8 | 440 | |
67a4f2b7 AO |
441 | /* The offset into splt of the PLT entry for the TLS descriptor |
442 | resolver. Special values are 0, if not necessary (or not found | |
443 | to be necessary yet), and -1 if needed but not determined | |
444 | yet. */ | |
445 | bfd_vma tlsdesc_plt; | |
446 | /* The offset into sgot of the GOT entry used by the PLT entry | |
447 | above. */ | |
448 | bfd_vma tlsdesc_got; | |
449 | ||
bffbf940 JJ |
450 | union { |
451 | bfd_signed_vma refcount; | |
452 | bfd_vma offset; | |
453 | } tls_ld_got; | |
454 | ||
67a4f2b7 AO |
455 | /* The amount of space used by the jump slots in the GOT. */ |
456 | bfd_vma sgotplt_jump_table_size; | |
457 | ||
c434dee6 AJ |
458 | /* Small local sym to section mapping cache. */ |
459 | struct sym_sec_cache sym_sec; | |
460 | }; | |
70256ad8 AJ |
461 | |
462 | /* Get the x86-64 ELF linker hash table from a link_info structure. */ | |
8d88c4ca NC |
463 | |
464 | #define elf64_x86_64_hash_table(p) \ | |
465 | ((struct elf64_x86_64_link_hash_table *) ((p)->hash)) | |
466 | ||
67a4f2b7 AO |
467 | #define elf64_x86_64_compute_jump_table_size(htab) \ |
468 | ((htab)->srelplt->reloc_count * GOT_ENTRY_SIZE) | |
469 | ||
407443a3 | 470 | /* Create an entry in an x86-64 ELF linker hash table. */ |
70256ad8 AJ |
471 | |
472 | static struct bfd_hash_entry * | |
27482721 AJ |
473 | link_hash_newfunc (struct bfd_hash_entry *entry, struct bfd_hash_table *table, |
474 | const char *string) | |
70256ad8 | 475 | { |
70256ad8 | 476 | /* Allocate the structure if it has not already been allocated by a |
c434dee6 AJ |
477 | subclass. */ |
478 | if (entry == NULL) | |
479 | { | |
480 | entry = bfd_hash_allocate (table, | |
481 | sizeof (struct elf64_x86_64_link_hash_entry)); | |
482 | if (entry == NULL) | |
483 | return entry; | |
484 | } | |
70256ad8 AJ |
485 | |
486 | /* Call the allocation method of the superclass. */ | |
c434dee6 AJ |
487 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
488 | if (entry != NULL) | |
70256ad8 | 489 | { |
c434dee6 AJ |
490 | struct elf64_x86_64_link_hash_entry *eh; |
491 | ||
492 | eh = (struct elf64_x86_64_link_hash_entry *) entry; | |
493 | eh->dyn_relocs = NULL; | |
bffbf940 | 494 | eh->tls_type = GOT_UNKNOWN; |
67a4f2b7 | 495 | eh->tlsdesc_got = (bfd_vma) -1; |
70256ad8 AJ |
496 | } |
497 | ||
c434dee6 | 498 | return entry; |
70256ad8 AJ |
499 | } |
500 | ||
8d88c4ca NC |
501 | /* Create an X86-64 ELF linker hash table. */ |
502 | ||
503 | static struct bfd_link_hash_table * | |
27482721 | 504 | elf64_x86_64_link_hash_table_create (bfd *abfd) |
8d88c4ca NC |
505 | { |
506 | struct elf64_x86_64_link_hash_table *ret; | |
dc810e39 | 507 | bfd_size_type amt = sizeof (struct elf64_x86_64_link_hash_table); |
8d88c4ca | 508 | |
e2d34d7d | 509 | ret = (struct elf64_x86_64_link_hash_table *) bfd_malloc (amt); |
c434dee6 | 510 | if (ret == NULL) |
8d88c4ca NC |
511 | return NULL; |
512 | ||
66eb6687 AM |
513 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
514 | sizeof (struct elf64_x86_64_link_hash_entry))) | |
8d88c4ca | 515 | { |
e2d34d7d | 516 | free (ret); |
8d88c4ca NC |
517 | return NULL; |
518 | } | |
519 | ||
c434dee6 AJ |
520 | ret->sgot = NULL; |
521 | ret->sgotplt = NULL; | |
522 | ret->srelgot = NULL; | |
523 | ret->splt = NULL; | |
524 | ret->srelplt = NULL; | |
525 | ret->sdynbss = NULL; | |
526 | ret->srelbss = NULL; | |
527 | ret->sym_sec.abfd = NULL; | |
67a4f2b7 AO |
528 | ret->tlsdesc_plt = 0; |
529 | ret->tlsdesc_got = 0; | |
bffbf940 | 530 | ret->tls_ld_got.refcount = 0; |
67a4f2b7 | 531 | ret->sgotplt_jump_table_size = 0; |
c434dee6 AJ |
532 | |
533 | return &ret->elf.root; | |
534 | } | |
535 | ||
536 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up | |
537 | shortcuts to them in our hash table. */ | |
538 | ||
b34976b6 | 539 | static bfd_boolean |
27482721 | 540 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
c434dee6 AJ |
541 | { |
542 | struct elf64_x86_64_link_hash_table *htab; | |
543 | ||
544 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 545 | return FALSE; |
c434dee6 AJ |
546 | |
547 | htab = elf64_x86_64_hash_table (info); | |
548 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
549 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
550 | if (!htab->sgot || !htab->sgotplt) | |
551 | abort (); | |
552 | ||
3496cb2a L |
553 | htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got", |
554 | (SEC_ALLOC | SEC_LOAD | |
555 | | SEC_HAS_CONTENTS | |
556 | | SEC_IN_MEMORY | |
557 | | SEC_LINKER_CREATED | |
558 | | SEC_READONLY)); | |
c434dee6 | 559 | if (htab->srelgot == NULL |
c434dee6 | 560 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3)) |
b34976b6 AM |
561 | return FALSE; |
562 | return TRUE; | |
c434dee6 AJ |
563 | } |
564 | ||
565 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and | |
566 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
567 | hash table. */ | |
568 | ||
b34976b6 | 569 | static bfd_boolean |
27482721 | 570 | elf64_x86_64_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
c434dee6 AJ |
571 | { |
572 | struct elf64_x86_64_link_hash_table *htab; | |
573 | ||
574 | htab = elf64_x86_64_hash_table (info); | |
575 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
b34976b6 | 576 | return FALSE; |
c434dee6 AJ |
577 | |
578 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 579 | return FALSE; |
c434dee6 AJ |
580 | |
581 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
582 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
583 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
584 | if (!info->shared) | |
585 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
586 | ||
587 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
588 | || (!info->shared && !htab->srelbss)) | |
589 | abort (); | |
590 | ||
b34976b6 | 591 | return TRUE; |
c434dee6 AJ |
592 | } |
593 | ||
594 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
595 | ||
596 | static void | |
fcfa13d2 | 597 | elf64_x86_64_copy_indirect_symbol (struct bfd_link_info *info, |
27482721 AJ |
598 | struct elf_link_hash_entry *dir, |
599 | struct elf_link_hash_entry *ind) | |
c434dee6 AJ |
600 | { |
601 | struct elf64_x86_64_link_hash_entry *edir, *eind; | |
602 | ||
603 | edir = (struct elf64_x86_64_link_hash_entry *) dir; | |
604 | eind = (struct elf64_x86_64_link_hash_entry *) ind; | |
605 | ||
606 | if (eind->dyn_relocs != NULL) | |
607 | { | |
608 | if (edir->dyn_relocs != NULL) | |
609 | { | |
610 | struct elf64_x86_64_dyn_relocs **pp; | |
611 | struct elf64_x86_64_dyn_relocs *p; | |
612 | ||
fcfa13d2 | 613 | /* Add reloc counts against the indirect sym to the direct sym |
c434dee6 AJ |
614 | list. Merge any entries against the same section. */ |
615 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
616 | { | |
617 | struct elf64_x86_64_dyn_relocs *q; | |
618 | ||
619 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
620 | if (q->sec == p->sec) | |
621 | { | |
622 | q->pc_count += p->pc_count; | |
623 | q->count += p->count; | |
624 | *pp = p->next; | |
625 | break; | |
626 | } | |
627 | if (q == NULL) | |
628 | pp = &p->next; | |
629 | } | |
630 | *pp = edir->dyn_relocs; | |
631 | } | |
632 | ||
633 | edir->dyn_relocs = eind->dyn_relocs; | |
634 | eind->dyn_relocs = NULL; | |
635 | } | |
636 | ||
bffbf940 JJ |
637 | if (ind->root.type == bfd_link_hash_indirect |
638 | && dir->got.refcount <= 0) | |
639 | { | |
640 | edir->tls_type = eind->tls_type; | |
641 | eind->tls_type = GOT_UNKNOWN; | |
642 | } | |
643 | ||
d40d037c AJ |
644 | if (ELIMINATE_COPY_RELOCS |
645 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
646 | && dir->dynamic_adjusted) |
647 | { | |
648 | /* If called to transfer flags for a weakdef during processing | |
649 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
650 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
651 | dir->ref_dynamic |= ind->ref_dynamic; | |
652 | dir->ref_regular |= ind->ref_regular; | |
653 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
654 | dir->needs_plt |= ind->needs_plt; | |
655 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
656 | } | |
d40d037c | 657 | else |
fcfa13d2 | 658 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
8d88c4ca NC |
659 | } |
660 | ||
b34976b6 | 661 | static bfd_boolean |
27482721 | 662 | elf64_x86_64_mkobject (bfd *abfd) |
8d88c4ca | 663 | { |
bffbf940 JJ |
664 | bfd_size_type amt = sizeof (struct elf64_x86_64_obj_tdata); |
665 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
666 | if (abfd->tdata.any == NULL) | |
b34976b6 AM |
667 | return FALSE; |
668 | return TRUE; | |
bffbf940 JJ |
669 | } |
670 | ||
b34976b6 | 671 | static bfd_boolean |
27482721 | 672 | elf64_x86_64_elf_object_p (bfd *abfd) |
bffbf940 | 673 | { |
8d88c4ca NC |
674 | /* Set the right machine number for an x86-64 elf64 file. */ |
675 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); | |
b34976b6 | 676 | return TRUE; |
8d88c4ca NC |
677 | } |
678 | ||
bffbf940 | 679 | static int |
27482721 | 680 | elf64_x86_64_tls_transition (struct bfd_link_info *info, int r_type, int is_local) |
bffbf940 JJ |
681 | { |
682 | if (info->shared) | |
683 | return r_type; | |
684 | ||
685 | switch (r_type) | |
686 | { | |
687 | case R_X86_64_TLSGD: | |
67a4f2b7 AO |
688 | case R_X86_64_GOTPC32_TLSDESC: |
689 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 JJ |
690 | case R_X86_64_GOTTPOFF: |
691 | if (is_local) | |
692 | return R_X86_64_TPOFF32; | |
693 | return R_X86_64_GOTTPOFF; | |
694 | case R_X86_64_TLSLD: | |
695 | return R_X86_64_TPOFF32; | |
696 | } | |
697 | ||
698 | return r_type; | |
699 | } | |
700 | ||
70256ad8 | 701 | /* Look through the relocs for a section during the first phase, and |
c434dee6 AJ |
702 | calculate needed space in the global offset table, procedure |
703 | linkage table, and dynamic reloc sections. */ | |
70256ad8 | 704 | |
b34976b6 | 705 | static bfd_boolean |
27482721 AJ |
706 | elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, |
707 | const Elf_Internal_Rela *relocs) | |
70256ad8 | 708 | { |
c434dee6 | 709 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 AJ |
710 | Elf_Internal_Shdr *symtab_hdr; |
711 | struct elf_link_hash_entry **sym_hashes; | |
70256ad8 AJ |
712 | const Elf_Internal_Rela *rel; |
713 | const Elf_Internal_Rela *rel_end; | |
70256ad8 AJ |
714 | asection *sreloc; |
715 | ||
1049f94e | 716 | if (info->relocatable) |
b34976b6 | 717 | return TRUE; |
70256ad8 | 718 | |
c434dee6 | 719 | htab = elf64_x86_64_hash_table (info); |
70256ad8 AJ |
720 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
721 | sym_hashes = elf_sym_hashes (abfd); | |
70256ad8 | 722 | |
c434dee6 AJ |
723 | sreloc = NULL; |
724 | ||
70256ad8 AJ |
725 | rel_end = relocs + sec->reloc_count; |
726 | for (rel = relocs; rel < rel_end; rel++) | |
727 | { | |
bffbf940 | 728 | unsigned int r_type; |
70256ad8 AJ |
729 | unsigned long r_symndx; |
730 | struct elf_link_hash_entry *h; | |
731 | ||
732 | r_symndx = ELF64_R_SYM (rel->r_info); | |
bffbf940 | 733 | r_type = ELF64_R_TYPE (rel->r_info); |
c434dee6 AJ |
734 | |
735 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
736 | { | |
d003868e AM |
737 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
738 | abfd, r_symndx); | |
b34976b6 | 739 | return FALSE; |
c434dee6 AJ |
740 | } |
741 | ||
70256ad8 AJ |
742 | if (r_symndx < symtab_hdr->sh_info) |
743 | h = NULL; | |
744 | else | |
71cb9464 L |
745 | { |
746 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
747 | while (h->root.type == bfd_link_hash_indirect | |
748 | || h->root.type == bfd_link_hash_warning) | |
749 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
750 | } | |
70256ad8 | 751 | |
bffbf940 JJ |
752 | r_type = elf64_x86_64_tls_transition (info, r_type, h == NULL); |
753 | switch (r_type) | |
70256ad8 | 754 | { |
bffbf940 JJ |
755 | case R_X86_64_TLSLD: |
756 | htab->tls_ld_got.refcount += 1; | |
757 | goto create_got; | |
758 | ||
759 | case R_X86_64_TPOFF32: | |
760 | if (info->shared) | |
70256ad8 | 761 | { |
bffbf940 | 762 | (*_bfd_error_handler) |
d003868e AM |
763 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
764 | abfd, | |
6610a52d L |
765 | x86_64_elf_howto_table[r_type].name, |
766 | (h) ? h->root.root.string : "a local symbol"); | |
bffbf940 | 767 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 768 | return FALSE; |
70256ad8 | 769 | } |
bffbf940 | 770 | break; |
c434dee6 | 771 | |
bffbf940 JJ |
772 | case R_X86_64_GOTTPOFF: |
773 | if (info->shared) | |
774 | info->flags |= DF_STATIC_TLS; | |
775 | /* Fall through */ | |
70256ad8 | 776 | |
bffbf940 JJ |
777 | case R_X86_64_GOT32: |
778 | case R_X86_64_GOTPCREL: | |
779 | case R_X86_64_TLSGD: | |
67a4f2b7 AO |
780 | case R_X86_64_GOTPC32_TLSDESC: |
781 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 JJ |
782 | /* This symbol requires a global offset table entry. */ |
783 | { | |
784 | int tls_type, old_tls_type; | |
785 | ||
786 | switch (r_type) | |
787 | { | |
788 | default: tls_type = GOT_NORMAL; break; | |
789 | case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break; | |
790 | case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break; | |
67a4f2b7 AO |
791 | case R_X86_64_GOTPC32_TLSDESC: |
792 | case R_X86_64_TLSDESC_CALL: | |
793 | tls_type = GOT_TLS_GDESC; break; | |
bffbf940 JJ |
794 | } |
795 | ||
796 | if (h != NULL) | |
797 | { | |
798 | h->got.refcount += 1; | |
799 | old_tls_type = elf64_x86_64_hash_entry (h)->tls_type; | |
800 | } | |
801 | else | |
802 | { | |
803 | bfd_signed_vma *local_got_refcounts; | |
804 | ||
805 | /* This is a global offset table entry for a local symbol. */ | |
806 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
807 | if (local_got_refcounts == NULL) | |
808 | { | |
809 | bfd_size_type size; | |
810 | ||
811 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
812 | size *= sizeof (bfd_signed_vma) |
813 | + sizeof (bfd_vma) + sizeof (char); | |
bffbf940 JJ |
814 | local_got_refcounts = ((bfd_signed_vma *) |
815 | bfd_zalloc (abfd, size)); | |
816 | if (local_got_refcounts == NULL) | |
b34976b6 | 817 | return FALSE; |
bffbf940 | 818 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
67a4f2b7 AO |
819 | elf64_x86_64_local_tlsdesc_gotent (abfd) |
820 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); | |
bffbf940 | 821 | elf64_x86_64_local_got_tls_type (abfd) |
67a4f2b7 | 822 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
bffbf940 JJ |
823 | } |
824 | local_got_refcounts[r_symndx] += 1; | |
825 | old_tls_type | |
826 | = elf64_x86_64_local_got_tls_type (abfd) [r_symndx]; | |
827 | } | |
828 | ||
829 | /* If a TLS symbol is accessed using IE at least once, | |
830 | there is no point to use dynamic model for it. */ | |
831 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN | |
67a4f2b7 AO |
832 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
833 | || tls_type != GOT_TLS_IE)) | |
bffbf940 | 834 | { |
67a4f2b7 | 835 | if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type)) |
bffbf940 | 836 | tls_type = old_tls_type; |
67a4f2b7 AO |
837 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
838 | && GOT_TLS_GD_ANY_P (tls_type)) | |
839 | tls_type |= old_tls_type; | |
bffbf940 JJ |
840 | else |
841 | { | |
842 | (*_bfd_error_handler) | |
d003868e AM |
843 | (_("%B: %s' accessed both as normal and thread local symbol"), |
844 | abfd, h ? h->root.root.string : "<local>"); | |
b34976b6 | 845 | return FALSE; |
bffbf940 JJ |
846 | } |
847 | } | |
848 | ||
849 | if (old_tls_type != tls_type) | |
850 | { | |
851 | if (h != NULL) | |
852 | elf64_x86_64_hash_entry (h)->tls_type = tls_type; | |
853 | else | |
854 | elf64_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
855 | } | |
856 | } | |
c434dee6 AJ |
857 | /* Fall through */ |
858 | ||
d6ab8113 JB |
859 | case R_X86_64_GOTOFF64: |
860 | case R_X86_64_GOTPC32: | |
bffbf940 | 861 | create_got: |
c434dee6 AJ |
862 | if (htab->sgot == NULL) |
863 | { | |
864 | if (htab->elf.dynobj == NULL) | |
865 | htab->elf.dynobj = abfd; | |
866 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 867 | return FALSE; |
c434dee6 | 868 | } |
70256ad8 AJ |
869 | break; |
870 | ||
871 | case R_X86_64_PLT32: | |
872 | /* This symbol requires a procedure linkage table entry. We | |
407443a3 AJ |
873 | actually build the entry in adjust_dynamic_symbol, |
874 | because this might be a case of linking PIC code which is | |
875 | never referenced by a dynamic object, in which case we | |
876 | don't need to generate a procedure linkage table entry | |
877 | after all. */ | |
70256ad8 AJ |
878 | |
879 | /* If this is a local symbol, we resolve it directly without | |
407443a3 | 880 | creating a procedure linkage table entry. */ |
70256ad8 AJ |
881 | if (h == NULL) |
882 | continue; | |
883 | ||
f5385ebf | 884 | h->needs_plt = 1; |
51b64d56 | 885 | h->plt.refcount += 1; |
70256ad8 AJ |
886 | break; |
887 | ||
cc78d0af AJ |
888 | case R_X86_64_8: |
889 | case R_X86_64_16: | |
70256ad8 AJ |
890 | case R_X86_64_32: |
891 | case R_X86_64_32S: | |
1b71fb54 AJ |
892 | /* Let's help debug shared library creation. These relocs |
893 | cannot be used in shared libs. Don't error out for | |
894 | sections we don't care about, such as debug sections or | |
895 | non-constant sections. */ | |
896 | if (info->shared | |
897 | && (sec->flags & SEC_ALLOC) != 0 | |
898 | && (sec->flags & SEC_READONLY) != 0) | |
899 | { | |
900 | (*_bfd_error_handler) | |
d003868e AM |
901 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
902 | abfd, | |
6610a52d L |
903 | x86_64_elf_howto_table[r_type].name, |
904 | (h) ? h->root.root.string : "a local symbol"); | |
1b71fb54 | 905 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 906 | return FALSE; |
1b71fb54 AJ |
907 | } |
908 | /* Fall through. */ | |
909 | ||
c434dee6 AJ |
910 | case R_X86_64_PC8: |
911 | case R_X86_64_PC16: | |
70256ad8 | 912 | case R_X86_64_PC32: |
d6ab8113 | 913 | case R_X86_64_PC64: |
1b71fb54 | 914 | case R_X86_64_64: |
c434dee6 AJ |
915 | if (h != NULL && !info->shared) |
916 | { | |
917 | /* If this reloc is in a read-only section, we might | |
918 | need a copy reloc. We can't check reliably at this | |
919 | stage whether the section is read-only, as input | |
920 | sections have not yet been mapped to output sections. | |
921 | Tentatively set the flag for now, and correct in | |
922 | adjust_dynamic_symbol. */ | |
f5385ebf | 923 | h->non_got_ref = 1; |
c434dee6 AJ |
924 | |
925 | /* We may need a .plt entry if the function this reloc | |
926 | refers to is in a shared lib. */ | |
927 | h->plt.refcount += 1; | |
d6ab8113 | 928 | if (r_type != R_X86_64_PC32 && r_type != R_X86_64_PC64) |
f5385ebf | 929 | h->pointer_equality_needed = 1; |
c434dee6 | 930 | } |
70256ad8 AJ |
931 | |
932 | /* If we are creating a shared library, and this is a reloc | |
933 | against a global symbol, or a non PC relative reloc | |
934 | against a local symbol, then we need to copy the reloc | |
935 | into the shared library. However, if we are linking with | |
936 | -Bsymbolic, we do not need to copy a reloc against a | |
937 | global symbol which is defined in an object we are | |
407443a3 | 938 | including in the link (i.e., DEF_REGULAR is set). At |
70256ad8 AJ |
939 | this point we have not seen all the input files, so it is |
940 | possible that DEF_REGULAR is not set now but will be set | |
c434dee6 AJ |
941 | later (it is never cleared). In case of a weak definition, |
942 | DEF_REGULAR may be cleared later by a strong definition in | |
943 | a shared library. We account for that possibility below by | |
944 | storing information in the relocs_copied field of the hash | |
945 | table entry. A similar situation occurs when creating | |
946 | shared libraries and symbol visibility changes render the | |
947 | symbol local. | |
948 | ||
949 | If on the other hand, we are creating an executable, we | |
950 | may need to keep relocations for symbols satisfied by a | |
951 | dynamic library if we manage to avoid copy relocs for the | |
952 | symbol. */ | |
953 | if ((info->shared | |
954 | && (sec->flags & SEC_ALLOC) != 0 | |
bffbf940 JJ |
955 | && (((r_type != R_X86_64_PC8) |
956 | && (r_type != R_X86_64_PC16) | |
d6ab8113 JB |
957 | && (r_type != R_X86_64_PC32) |
958 | && (r_type != R_X86_64_PC64)) | |
c434dee6 AJ |
959 | || (h != NULL |
960 | && (! info->symbolic | |
961 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 962 | || !h->def_regular)))) |
d40d037c AJ |
963 | || (ELIMINATE_COPY_RELOCS |
964 | && !info->shared | |
c434dee6 AJ |
965 | && (sec->flags & SEC_ALLOC) != 0 |
966 | && h != NULL | |
967 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 968 | || !h->def_regular))) |
70256ad8 | 969 | { |
c434dee6 AJ |
970 | struct elf64_x86_64_dyn_relocs *p; |
971 | struct elf64_x86_64_dyn_relocs **head; | |
972 | ||
973 | /* We must copy these reloc types into the output file. | |
974 | Create a reloc section in dynobj and make room for | |
975 | this reloc. */ | |
70256ad8 AJ |
976 | if (sreloc == NULL) |
977 | { | |
978 | const char *name; | |
c434dee6 | 979 | bfd *dynobj; |
70256ad8 AJ |
980 | |
981 | name = (bfd_elf_string_from_elf_section | |
982 | (abfd, | |
983 | elf_elfheader (abfd)->e_shstrndx, | |
984 | elf_section_data (sec)->rel_hdr.sh_name)); | |
985 | if (name == NULL) | |
b34976b6 | 986 | return FALSE; |
70256ad8 | 987 | |
c434dee6 AJ |
988 | if (strncmp (name, ".rela", 5) != 0 |
989 | || strcmp (bfd_get_section_name (abfd, sec), | |
990 | name + 5) != 0) | |
991 | { | |
992 | (*_bfd_error_handler) | |
d003868e AM |
993 | (_("%B: bad relocation section name `%s\'"), |
994 | abfd, name); | |
c434dee6 AJ |
995 | } |
996 | ||
997 | if (htab->elf.dynobj == NULL) | |
998 | htab->elf.dynobj = abfd; | |
999 | ||
1000 | dynobj = htab->elf.dynobj; | |
70256ad8 AJ |
1001 | |
1002 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1003 | if (sreloc == NULL) | |
1004 | { | |
1005 | flagword flags; | |
1006 | ||
70256ad8 AJ |
1007 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
1008 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1009 | if ((sec->flags & SEC_ALLOC) != 0) | |
1010 | flags |= SEC_ALLOC | SEC_LOAD; | |
3496cb2a L |
1011 | sreloc = bfd_make_section_with_flags (dynobj, |
1012 | name, | |
1013 | flags); | |
70256ad8 | 1014 | if (sreloc == NULL |
cc78d0af | 1015 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 1016 | return FALSE; |
70256ad8 | 1017 | } |
c434dee6 | 1018 | elf_section_data (sec)->sreloc = sreloc; |
70256ad8 AJ |
1019 | } |
1020 | ||
c434dee6 AJ |
1021 | /* If this is a global symbol, we count the number of |
1022 | relocations we need for this symbol. */ | |
1023 | if (h != NULL) | |
70256ad8 | 1024 | { |
c434dee6 AJ |
1025 | head = &((struct elf64_x86_64_link_hash_entry *) h)->dyn_relocs; |
1026 | } | |
1027 | else | |
1028 | { | |
e81d3500 | 1029 | void **vpp; |
c434dee6 AJ |
1030 | /* Track dynamic relocs needed for local syms too. |
1031 | We really need local syms available to do this | |
1032 | easily. Oh well. */ | |
1033 | ||
1034 | asection *s; | |
1035 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
1036 | sec, r_symndx); | |
1037 | if (s == NULL) | |
b34976b6 | 1038 | return FALSE; |
70256ad8 | 1039 | |
e81d3500 DD |
1040 | /* Beware of type punned pointers vs strict aliasing |
1041 | rules. */ | |
1042 | vpp = &(elf_section_data (s)->local_dynrel); | |
1043 | head = (struct elf64_x86_64_dyn_relocs **)vpp; | |
c434dee6 | 1044 | } |
70256ad8 | 1045 | |
c434dee6 AJ |
1046 | p = *head; |
1047 | if (p == NULL || p->sec != sec) | |
1048 | { | |
1049 | bfd_size_type amt = sizeof *p; | |
1050 | p = ((struct elf64_x86_64_dyn_relocs *) | |
1051 | bfd_alloc (htab->elf.dynobj, amt)); | |
70256ad8 | 1052 | if (p == NULL) |
b34976b6 | 1053 | return FALSE; |
c434dee6 AJ |
1054 | p->next = *head; |
1055 | *head = p; | |
1056 | p->sec = sec; | |
1057 | p->count = 0; | |
1058 | p->pc_count = 0; | |
70256ad8 | 1059 | } |
c434dee6 AJ |
1060 | |
1061 | p->count += 1; | |
bffbf940 JJ |
1062 | if (r_type == R_X86_64_PC8 |
1063 | || r_type == R_X86_64_PC16 | |
d6ab8113 JB |
1064 | || r_type == R_X86_64_PC32 |
1065 | || r_type == R_X86_64_PC64) | |
c434dee6 | 1066 | p->pc_count += 1; |
70256ad8 AJ |
1067 | } |
1068 | break; | |
fe4770f4 AJ |
1069 | |
1070 | /* This relocation describes the C++ object vtable hierarchy. | |
1071 | Reconstruct it for later use during GC. */ | |
1072 | case R_X86_64_GNU_VTINHERIT: | |
c152c796 | 1073 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 1074 | return FALSE; |
fe4770f4 AJ |
1075 | break; |
1076 | ||
1077 | /* This relocation describes which C++ vtable entries are actually | |
1078 | used. Record for later use during GC. */ | |
1079 | case R_X86_64_GNU_VTENTRY: | |
c152c796 | 1080 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 1081 | return FALSE; |
fe4770f4 | 1082 | break; |
c434dee6 AJ |
1083 | |
1084 | default: | |
1085 | break; | |
70256ad8 AJ |
1086 | } |
1087 | } | |
1088 | ||
b34976b6 | 1089 | return TRUE; |
70256ad8 AJ |
1090 | } |
1091 | ||
1092 | /* Return the section that should be marked against GC for a given | |
407443a3 | 1093 | relocation. */ |
70256ad8 AJ |
1094 | |
1095 | static asection * | |
27482721 AJ |
1096 | elf64_x86_64_gc_mark_hook (asection *sec, |
1097 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1098 | Elf_Internal_Rela *rel, | |
1099 | struct elf_link_hash_entry *h, | |
1100 | Elf_Internal_Sym *sym) | |
70256ad8 AJ |
1101 | { |
1102 | if (h != NULL) | |
1103 | { | |
fe4770f4 | 1104 | switch (ELF64_R_TYPE (rel->r_info)) |
70256ad8 | 1105 | { |
fe4770f4 AJ |
1106 | case R_X86_64_GNU_VTINHERIT: |
1107 | case R_X86_64_GNU_VTENTRY: | |
1108 | break; | |
70256ad8 AJ |
1109 | |
1110 | default: | |
fe4770f4 AJ |
1111 | switch (h->root.type) |
1112 | { | |
1113 | case bfd_link_hash_defined: | |
1114 | case bfd_link_hash_defweak: | |
1115 | return h->root.u.def.section; | |
1116 | ||
1117 | case bfd_link_hash_common: | |
1118 | return h->root.u.c.p->section; | |
1119 | ||
1120 | default: | |
1121 | break; | |
1122 | } | |
70256ad8 AJ |
1123 | } |
1124 | } | |
1125 | else | |
1e2f5b6e | 1126 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
70256ad8 AJ |
1127 | |
1128 | return NULL; | |
1129 | } | |
1130 | ||
407443a3 | 1131 | /* Update the got entry reference counts for the section being removed. */ |
70256ad8 | 1132 | |
b34976b6 | 1133 | static bfd_boolean |
27482721 AJ |
1134 | elf64_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
1135 | asection *sec, const Elf_Internal_Rela *relocs) | |
70256ad8 AJ |
1136 | { |
1137 | Elf_Internal_Shdr *symtab_hdr; | |
1138 | struct elf_link_hash_entry **sym_hashes; | |
1139 | bfd_signed_vma *local_got_refcounts; | |
1140 | const Elf_Internal_Rela *rel, *relend; | |
c434dee6 AJ |
1141 | |
1142 | elf_section_data (sec)->local_dynrel = NULL; | |
70256ad8 AJ |
1143 | |
1144 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1145 | sym_hashes = elf_sym_hashes (abfd); | |
1146 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1147 | ||
70256ad8 AJ |
1148 | relend = relocs + sec->reloc_count; |
1149 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1150 | { |
1151 | unsigned long r_symndx; | |
1152 | unsigned int r_type; | |
1153 | struct elf_link_hash_entry *h = NULL; | |
70256ad8 | 1154 | |
26e41594 AM |
1155 | r_symndx = ELF64_R_SYM (rel->r_info); |
1156 | if (r_symndx >= symtab_hdr->sh_info) | |
1157 | { | |
1158 | struct elf64_x86_64_link_hash_entry *eh; | |
1159 | struct elf64_x86_64_dyn_relocs **pp; | |
1160 | struct elf64_x86_64_dyn_relocs *p; | |
c434dee6 | 1161 | |
26e41594 | 1162 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1163 | while (h->root.type == bfd_link_hash_indirect |
1164 | || h->root.type == bfd_link_hash_warning) | |
1165 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1166 | eh = (struct elf64_x86_64_link_hash_entry *) h; |
c434dee6 | 1167 | |
26e41594 AM |
1168 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1169 | if (p->sec == sec) | |
1170 | { | |
1171 | /* Everything must go for SEC. */ | |
1172 | *pp = p->next; | |
1173 | break; | |
1174 | } | |
1175 | } | |
c434dee6 | 1176 | |
26e41594 AM |
1177 | r_type = ELF64_R_TYPE (rel->r_info); |
1178 | r_type = elf64_x86_64_tls_transition (info, r_type, h != NULL); | |
1179 | switch (r_type) | |
1180 | { | |
1181 | case R_X86_64_TLSLD: | |
1182 | if (elf64_x86_64_hash_table (info)->tls_ld_got.refcount > 0) | |
1183 | elf64_x86_64_hash_table (info)->tls_ld_got.refcount -= 1; | |
1184 | break; | |
c434dee6 | 1185 | |
26e41594 | 1186 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
1187 | case R_X86_64_GOTPC32_TLSDESC: |
1188 | case R_X86_64_TLSDESC_CALL: | |
26e41594 AM |
1189 | case R_X86_64_GOTTPOFF: |
1190 | case R_X86_64_GOT32: | |
1191 | case R_X86_64_GOTPCREL: | |
1192 | if (h != NULL) | |
1193 | { | |
1194 | if (h->got.refcount > 0) | |
1195 | h->got.refcount -= 1; | |
1196 | } | |
1197 | else if (local_got_refcounts != NULL) | |
1198 | { | |
1199 | if (local_got_refcounts[r_symndx] > 0) | |
1200 | local_got_refcounts[r_symndx] -= 1; | |
1201 | } | |
1202 | break; | |
c434dee6 | 1203 | |
26e41594 AM |
1204 | case R_X86_64_8: |
1205 | case R_X86_64_16: | |
1206 | case R_X86_64_32: | |
1207 | case R_X86_64_64: | |
1208 | case R_X86_64_32S: | |
1209 | case R_X86_64_PC8: | |
1210 | case R_X86_64_PC16: | |
1211 | case R_X86_64_PC32: | |
d6ab8113 | 1212 | case R_X86_64_PC64: |
26e41594 AM |
1213 | if (info->shared) |
1214 | break; | |
1215 | /* Fall thru */ | |
c434dee6 | 1216 | |
26e41594 AM |
1217 | case R_X86_64_PLT32: |
1218 | if (h != NULL) | |
1219 | { | |
1220 | if (h->plt.refcount > 0) | |
1221 | h->plt.refcount -= 1; | |
1222 | } | |
1223 | break; | |
70256ad8 | 1224 | |
26e41594 AM |
1225 | default: |
1226 | break; | |
1227 | } | |
1228 | } | |
70256ad8 | 1229 | |
b34976b6 | 1230 | return TRUE; |
70256ad8 AJ |
1231 | } |
1232 | ||
1233 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1234 | regular object. The current definition is in some section of the | |
1235 | dynamic object, but we're not including those sections. We have to | |
1236 | change the definition to something the rest of the link can | |
407443a3 | 1237 | understand. */ |
70256ad8 | 1238 | |
b34976b6 | 1239 | static bfd_boolean |
27482721 AJ |
1240 | elf64_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info, |
1241 | struct elf_link_hash_entry *h) | |
70256ad8 | 1242 | { |
c434dee6 | 1243 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 AJ |
1244 | asection *s; |
1245 | unsigned int power_of_two; | |
1246 | ||
70256ad8 AJ |
1247 | /* If this is a function, put it in the procedure linkage table. We |
1248 | will fill in the contents of the procedure linkage table later, | |
1249 | when we know the address of the .got section. */ | |
1250 | if (h->type == STT_FUNC | |
f5385ebf | 1251 | || h->needs_plt) |
70256ad8 | 1252 | { |
c434dee6 | 1253 | if (h->plt.refcount <= 0 |
27482721 AJ |
1254 | || SYMBOL_CALLS_LOCAL (info, h) |
1255 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1256 | && h->root.type == bfd_link_hash_undefweak)) | |
70256ad8 | 1257 | { |
70256ad8 AJ |
1258 | /* This case can occur if we saw a PLT32 reloc in an input |
1259 | file, but the symbol was never referred to by a dynamic | |
1260 | object, or if all references were garbage collected. In | |
1261 | such a case, we don't actually need to build a procedure | |
1262 | linkage table, and we can just do a PC32 reloc instead. */ | |
70256ad8 | 1263 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1264 | h->needs_plt = 0; |
70256ad8 AJ |
1265 | } |
1266 | ||
b34976b6 | 1267 | return TRUE; |
70256ad8 | 1268 | } |
bbd7ec4a | 1269 | else |
c434dee6 AJ |
1270 | /* It's possible that we incorrectly decided a .plt reloc was |
1271 | needed for an R_X86_64_PC32 reloc to a non-function sym in | |
1272 | check_relocs. We can't decide accurately between function and | |
1273 | non-function syms in check-relocs; Objects loaded later in | |
1274 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1275 | h->plt.offset = (bfd_vma) -1; |
70256ad8 AJ |
1276 | |
1277 | /* If this is a weak symbol, and there is a real definition, the | |
1278 | processor independent code will have arranged for us to see the | |
407443a3 | 1279 | real definition first, and we can just use the same value. */ |
f6e332e6 | 1280 | if (h->u.weakdef != NULL) |
70256ad8 | 1281 | { |
f6e332e6 AM |
1282 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1283 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1284 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1285 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
d40d037c | 1286 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 1287 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 1288 | return TRUE; |
70256ad8 AJ |
1289 | } |
1290 | ||
1291 | /* This is a reference to a symbol defined by a dynamic object which | |
407443a3 | 1292 | is not a function. */ |
70256ad8 AJ |
1293 | |
1294 | /* If we are creating a shared library, we must presume that the | |
1295 | only references to the symbol are via the global offset table. | |
1296 | For such cases we need not do anything here; the relocations will | |
407443a3 | 1297 | be handled correctly by relocate_section. */ |
70256ad8 | 1298 | if (info->shared) |
b34976b6 | 1299 | return TRUE; |
70256ad8 AJ |
1300 | |
1301 | /* If there are no references to this symbol that do not use the | |
1302 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1303 | if (!h->non_got_ref) |
b34976b6 | 1304 | return TRUE; |
70256ad8 | 1305 | |
c434dee6 AJ |
1306 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1307 | if (info->nocopyreloc) | |
1308 | { | |
f5385ebf | 1309 | h->non_got_ref = 0; |
b34976b6 | 1310 | return TRUE; |
c434dee6 AJ |
1311 | } |
1312 | ||
d40d037c | 1313 | if (ELIMINATE_COPY_RELOCS) |
c434dee6 | 1314 | { |
d40d037c AJ |
1315 | struct elf64_x86_64_link_hash_entry * eh; |
1316 | struct elf64_x86_64_dyn_relocs *p; | |
c434dee6 | 1317 | |
d40d037c AJ |
1318 | eh = (struct elf64_x86_64_link_hash_entry *) h; |
1319 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1320 | { | |
1321 | s = p->sec->output_section; | |
1322 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1323 | break; | |
1324 | } | |
1325 | ||
1326 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1327 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1328 | if (p == NULL) | |
1329 | { | |
f5385ebf | 1330 | h->non_got_ref = 0; |
d40d037c AJ |
1331 | return TRUE; |
1332 | } | |
c434dee6 AJ |
1333 | } |
1334 | ||
909272ee AM |
1335 | if (h->size == 0) |
1336 | { | |
1337 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1338 | h->root.root.string); | |
1339 | return TRUE; | |
1340 | } | |
1341 | ||
70256ad8 | 1342 | /* We must allocate the symbol in our .dynbss section, which will |
407443a3 | 1343 | become part of the .bss section of the executable. There will be |
70256ad8 AJ |
1344 | an entry for this symbol in the .dynsym section. The dynamic |
1345 | object will contain position independent code, so all references | |
1346 | from the dynamic object to this symbol will go through the global | |
1347 | offset table. The dynamic linker will use the .dynsym entry to | |
1348 | determine the address it must put in the global offset table, so | |
1349 | both the dynamic object and the regular object will refer to the | |
1350 | same memory location for the variable. */ | |
1351 | ||
c434dee6 | 1352 | htab = elf64_x86_64_hash_table (info); |
70256ad8 AJ |
1353 | |
1354 | /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker | |
1355 | to copy the initial value out of the dynamic object and into the | |
cedb70c5 | 1356 | runtime process image. */ |
70256ad8 AJ |
1357 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1358 | { | |
eea6121a | 1359 | htab->srelbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 1360 | h->needs_copy = 1; |
70256ad8 AJ |
1361 | } |
1362 | ||
1363 | /* We need to figure out the alignment required for this symbol. I | |
407443a3 | 1364 | have no idea how ELF linkers handle this. 16-bytes is the size |
70256ad8 AJ |
1365 | of the largest type that requires hard alignment -- long double. */ |
1366 | /* FIXME: This is VERY ugly. Should be fixed for all architectures using | |
1367 | this construct. */ | |
1368 | power_of_two = bfd_log2 (h->size); | |
1369 | if (power_of_two > 4) | |
1370 | power_of_two = 4; | |
1371 | ||
1372 | /* Apply the required alignment. */ | |
c434dee6 | 1373 | s = htab->sdynbss; |
eea6121a | 1374 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
c434dee6 | 1375 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
70256ad8 | 1376 | { |
c434dee6 | 1377 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 1378 | return FALSE; |
70256ad8 AJ |
1379 | } |
1380 | ||
1381 | /* Define the symbol as being at this point in the section. */ | |
1382 | h->root.u.def.section = s; | |
eea6121a | 1383 | h->root.u.def.value = s->size; |
70256ad8 AJ |
1384 | |
1385 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 1386 | s->size += h->size; |
70256ad8 | 1387 | |
b34976b6 | 1388 | return TRUE; |
70256ad8 AJ |
1389 | } |
1390 | ||
c434dee6 AJ |
1391 | /* Allocate space in .plt, .got and associated reloc sections for |
1392 | dynamic relocs. */ | |
1393 | ||
b34976b6 | 1394 | static bfd_boolean |
27482721 | 1395 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
c434dee6 AJ |
1396 | { |
1397 | struct bfd_link_info *info; | |
1398 | struct elf64_x86_64_link_hash_table *htab; | |
1399 | struct elf64_x86_64_link_hash_entry *eh; | |
1400 | struct elf64_x86_64_dyn_relocs *p; | |
1401 | ||
e92d460e | 1402 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1403 | return TRUE; |
c434dee6 | 1404 | |
e92d460e AM |
1405 | if (h->root.type == bfd_link_hash_warning) |
1406 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1407 | ||
c434dee6 AJ |
1408 | info = (struct bfd_link_info *) inf; |
1409 | htab = elf64_x86_64_hash_table (info); | |
1410 | ||
1411 | if (htab->elf.dynamic_sections_created | |
27482721 | 1412 | && h->plt.refcount > 0) |
c434dee6 AJ |
1413 | { |
1414 | /* Make sure this symbol is output as a dynamic symbol. | |
1415 | Undefined weak syms won't yet be marked as dynamic. */ | |
1416 | if (h->dynindx == -1 | |
f5385ebf | 1417 | && !h->forced_local) |
c434dee6 | 1418 | { |
c152c796 | 1419 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1420 | return FALSE; |
c434dee6 AJ |
1421 | } |
1422 | ||
27482721 AJ |
1423 | if (info->shared |
1424 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
c434dee6 AJ |
1425 | { |
1426 | asection *s = htab->splt; | |
1427 | ||
1428 | /* If this is the first .plt entry, make room for the special | |
1429 | first entry. */ | |
eea6121a AM |
1430 | if (s->size == 0) |
1431 | s->size += PLT_ENTRY_SIZE; | |
c434dee6 | 1432 | |
eea6121a | 1433 | h->plt.offset = s->size; |
c434dee6 AJ |
1434 | |
1435 | /* If this symbol is not defined in a regular file, and we are | |
1436 | not generating a shared library, then set the symbol to this | |
1437 | location in the .plt. This is required to make function | |
1438 | pointers compare as equal between the normal executable and | |
1439 | the shared library. */ | |
1440 | if (! info->shared | |
f5385ebf | 1441 | && !h->def_regular) |
c434dee6 AJ |
1442 | { |
1443 | h->root.u.def.section = s; | |
1444 | h->root.u.def.value = h->plt.offset; | |
1445 | } | |
1446 | ||
1447 | /* Make room for this entry. */ | |
eea6121a | 1448 | s->size += PLT_ENTRY_SIZE; |
c434dee6 AJ |
1449 | |
1450 | /* We also need to make an entry in the .got.plt section, which | |
1451 | will be placed in the .got section by the linker script. */ | |
eea6121a | 1452 | htab->sgotplt->size += GOT_ENTRY_SIZE; |
c434dee6 AJ |
1453 | |
1454 | /* We also need to make an entry in the .rela.plt section. */ | |
eea6121a | 1455 | htab->srelplt->size += sizeof (Elf64_External_Rela); |
67a4f2b7 | 1456 | htab->srelplt->reloc_count++; |
c434dee6 AJ |
1457 | } |
1458 | else | |
1459 | { | |
1460 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1461 | h->needs_plt = 0; |
c434dee6 AJ |
1462 | } |
1463 | } | |
1464 | else | |
1465 | { | |
1466 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1467 | h->needs_plt = 0; |
c434dee6 AJ |
1468 | } |
1469 | ||
67a4f2b7 AO |
1470 | eh = (struct elf64_x86_64_link_hash_entry *) h; |
1471 | eh->tlsdesc_got = (bfd_vma) -1; | |
1472 | ||
bffbf940 JJ |
1473 | /* If R_X86_64_GOTTPOFF symbol is now local to the binary, |
1474 | make it a R_X86_64_TPOFF32 requiring no GOT entry. */ | |
1475 | if (h->got.refcount > 0 | |
1476 | && !info->shared | |
1477 | && h->dynindx == -1 | |
1478 | && elf64_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE) | |
1479 | h->got.offset = (bfd_vma) -1; | |
1480 | else if (h->got.refcount > 0) | |
c434dee6 AJ |
1481 | { |
1482 | asection *s; | |
b34976b6 | 1483 | bfd_boolean dyn; |
bffbf940 | 1484 | int tls_type = elf64_x86_64_hash_entry (h)->tls_type; |
c434dee6 AJ |
1485 | |
1486 | /* Make sure this symbol is output as a dynamic symbol. | |
1487 | Undefined weak syms won't yet be marked as dynamic. */ | |
1488 | if (h->dynindx == -1 | |
f5385ebf | 1489 | && !h->forced_local) |
c434dee6 | 1490 | { |
c152c796 | 1491 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1492 | return FALSE; |
c434dee6 AJ |
1493 | } |
1494 | ||
67a4f2b7 AO |
1495 | if (GOT_TLS_GDESC_P (tls_type)) |
1496 | { | |
1497 | eh->tlsdesc_got = htab->sgotplt->size | |
1498 | - elf64_x86_64_compute_jump_table_size (htab); | |
1499 | htab->sgotplt->size += 2 * GOT_ENTRY_SIZE; | |
1500 | h->got.offset = (bfd_vma) -2; | |
1501 | } | |
1502 | if (! GOT_TLS_GDESC_P (tls_type) | |
1503 | || GOT_TLS_GD_P (tls_type)) | |
1504 | { | |
1505 | s = htab->sgot; | |
1506 | h->got.offset = s->size; | |
1507 | s->size += GOT_ENTRY_SIZE; | |
1508 | if (GOT_TLS_GD_P (tls_type)) | |
1509 | s->size += GOT_ENTRY_SIZE; | |
1510 | } | |
c434dee6 | 1511 | dyn = htab->elf.dynamic_sections_created; |
bffbf940 JJ |
1512 | /* R_X86_64_TLSGD needs one dynamic relocation if local symbol |
1513 | and two if global. | |
1514 | R_X86_64_GOTTPOFF needs one dynamic relocation. */ | |
67a4f2b7 | 1515 | if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
bffbf940 | 1516 | || tls_type == GOT_TLS_IE) |
eea6121a | 1517 | htab->srelgot->size += sizeof (Elf64_External_Rela); |
67a4f2b7 | 1518 | else if (GOT_TLS_GD_P (tls_type)) |
eea6121a | 1519 | htab->srelgot->size += 2 * sizeof (Elf64_External_Rela); |
67a4f2b7 AO |
1520 | else if (! GOT_TLS_GDESC_P (tls_type) |
1521 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1522 | || h->root.type != bfd_link_hash_undefweak) | |
27482721 AJ |
1523 | && (info->shared |
1524 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
eea6121a | 1525 | htab->srelgot->size += sizeof (Elf64_External_Rela); |
67a4f2b7 AO |
1526 | if (GOT_TLS_GDESC_P (tls_type)) |
1527 | { | |
1528 | htab->srelplt->size += sizeof (Elf64_External_Rela); | |
1529 | htab->tlsdesc_plt = (bfd_vma) -1; | |
1530 | } | |
c434dee6 AJ |
1531 | } |
1532 | else | |
1533 | h->got.offset = (bfd_vma) -1; | |
1534 | ||
c434dee6 | 1535 | if (eh->dyn_relocs == NULL) |
b34976b6 | 1536 | return TRUE; |
c434dee6 AJ |
1537 | |
1538 | /* In the shared -Bsymbolic case, discard space allocated for | |
1539 | dynamic pc-relative relocs against symbols which turn out to be | |
1540 | defined in regular objects. For the normal shared case, discard | |
1541 | space for pc-relative relocs that have become local due to symbol | |
1542 | visibility changes. */ | |
1543 | ||
1544 | if (info->shared) | |
1545 | { | |
27482721 AJ |
1546 | /* Relocs that use pc_count are those that appear on a call |
1547 | insn, or certain REL relocs that can generated via assembly. | |
1548 | We want calls to protected symbols to resolve directly to the | |
1549 | function rather than going via the plt. If people want | |
1550 | function pointer comparisons to work as expected then they | |
1551 | should avoid writing weird assembly. */ | |
1552 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
c434dee6 AJ |
1553 | { |
1554 | struct elf64_x86_64_dyn_relocs **pp; | |
1555 | ||
1556 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1557 | { | |
1558 | p->count -= p->pc_count; | |
1559 | p->pc_count = 0; | |
1560 | if (p->count == 0) | |
1561 | *pp = p->next; | |
1562 | else | |
1563 | pp = &p->next; | |
1564 | } | |
1565 | } | |
4e795f50 AM |
1566 | |
1567 | /* Also discard relocs on undefined weak syms with non-default | |
1568 | visibility. */ | |
22d606e9 | 1569 | if (eh->dyn_relocs != NULL |
4e795f50 | 1570 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
1571 | { |
1572 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
1573 | eh->dyn_relocs = NULL; | |
1574 | ||
1575 | /* Make sure undefined weak symbols are output as a dynamic | |
1576 | symbol in PIEs. */ | |
1577 | else if (h->dynindx == -1 | |
1578 | && !h->forced_local) | |
1579 | { | |
1580 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1581 | return FALSE; | |
1582 | } | |
1583 | } | |
c434dee6 | 1584 | } |
d40d037c | 1585 | else if (ELIMINATE_COPY_RELOCS) |
c434dee6 AJ |
1586 | { |
1587 | /* For the non-shared case, discard space for relocs against | |
1588 | symbols which turn out to need copy relocs or are not | |
1589 | dynamic. */ | |
1590 | ||
f5385ebf AM |
1591 | if (!h->non_got_ref |
1592 | && ((h->def_dynamic | |
1593 | && !h->def_regular) | |
c434dee6 AJ |
1594 | || (htab->elf.dynamic_sections_created |
1595 | && (h->root.type == bfd_link_hash_undefweak | |
1596 | || h->root.type == bfd_link_hash_undefined)))) | |
1597 | { | |
1598 | /* Make sure this symbol is output as a dynamic symbol. | |
1599 | Undefined weak syms won't yet be marked as dynamic. */ | |
1600 | if (h->dynindx == -1 | |
f5385ebf | 1601 | && !h->forced_local) |
c434dee6 | 1602 | { |
c152c796 | 1603 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1604 | return FALSE; |
c434dee6 AJ |
1605 | } |
1606 | ||
1607 | /* If that succeeded, we know we'll be keeping all the | |
1608 | relocs. */ | |
1609 | if (h->dynindx != -1) | |
1610 | goto keep; | |
1611 | } | |
1612 | ||
1613 | eh->dyn_relocs = NULL; | |
1614 | ||
1615 | keep: ; | |
1616 | } | |
1617 | ||
1618 | /* Finally, allocate space. */ | |
1619 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1620 | { | |
1621 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1622 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
c434dee6 AJ |
1623 | } |
1624 | ||
b34976b6 | 1625 | return TRUE; |
c434dee6 AJ |
1626 | } |
1627 | ||
1628 | /* Find any dynamic relocs that apply to read-only sections. */ | |
1629 | ||
b34976b6 | 1630 | static bfd_boolean |
27482721 | 1631 | readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
c434dee6 AJ |
1632 | { |
1633 | struct elf64_x86_64_link_hash_entry *eh; | |
1634 | struct elf64_x86_64_dyn_relocs *p; | |
1635 | ||
e92d460e AM |
1636 | if (h->root.type == bfd_link_hash_warning) |
1637 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1638 | ||
c434dee6 AJ |
1639 | eh = (struct elf64_x86_64_link_hash_entry *) h; |
1640 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1641 | { | |
1642 | asection *s = p->sec->output_section; | |
1643 | ||
1644 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1645 | { | |
1646 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1647 | ||
1648 | info->flags |= DF_TEXTREL; | |
1649 | ||
1650 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 1651 | return FALSE; |
c434dee6 AJ |
1652 | } |
1653 | } | |
b34976b6 | 1654 | return TRUE; |
c434dee6 AJ |
1655 | } |
1656 | ||
70256ad8 AJ |
1657 | /* Set the sizes of the dynamic sections. */ |
1658 | ||
b34976b6 | 1659 | static bfd_boolean |
27482721 AJ |
1660 | elf64_x86_64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1661 | struct bfd_link_info *info) | |
70256ad8 | 1662 | { |
c434dee6 | 1663 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 AJ |
1664 | bfd *dynobj; |
1665 | asection *s; | |
b34976b6 | 1666 | bfd_boolean relocs; |
c434dee6 | 1667 | bfd *ibfd; |
70256ad8 | 1668 | |
c434dee6 AJ |
1669 | htab = elf64_x86_64_hash_table (info); |
1670 | dynobj = htab->elf.dynobj; | |
1671 | if (dynobj == NULL) | |
1672 | abort (); | |
70256ad8 | 1673 | |
c434dee6 | 1674 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
1675 | { |
1676 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 1677 | if (info->executable) |
70256ad8 AJ |
1678 | { |
1679 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
c434dee6 AJ |
1680 | if (s == NULL) |
1681 | abort (); | |
eea6121a | 1682 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
70256ad8 AJ |
1683 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1684 | } | |
1685 | } | |
70256ad8 | 1686 | |
c434dee6 AJ |
1687 | /* Set up .got offsets for local syms, and space for local dynamic |
1688 | relocs. */ | |
1689 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
70256ad8 | 1690 | { |
c434dee6 AJ |
1691 | bfd_signed_vma *local_got; |
1692 | bfd_signed_vma *end_local_got; | |
bffbf940 | 1693 | char *local_tls_type; |
67a4f2b7 | 1694 | bfd_vma *local_tlsdesc_gotent; |
c434dee6 AJ |
1695 | bfd_size_type locsymcount; |
1696 | Elf_Internal_Shdr *symtab_hdr; | |
1697 | asection *srel; | |
70256ad8 | 1698 | |
c434dee6 | 1699 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
70256ad8 AJ |
1700 | continue; |
1701 | ||
c434dee6 | 1702 | for (s = ibfd->sections; s != NULL; s = s->next) |
70256ad8 | 1703 | { |
c434dee6 AJ |
1704 | struct elf64_x86_64_dyn_relocs *p; |
1705 | ||
e81d3500 DD |
1706 | for (p = (struct elf64_x86_64_dyn_relocs *) |
1707 | (elf_section_data (s)->local_dynrel); | |
c434dee6 AJ |
1708 | p != NULL; |
1709 | p = p->next) | |
70256ad8 | 1710 | { |
c434dee6 AJ |
1711 | if (!bfd_is_abs_section (p->sec) |
1712 | && bfd_is_abs_section (p->sec->output_section)) | |
1713 | { | |
1714 | /* Input section has been discarded, either because | |
1715 | it is a copy of a linkonce section or due to | |
1716 | linker script /DISCARD/, so we'll be discarding | |
1717 | the relocs too. */ | |
1718 | } | |
1719 | else if (p->count != 0) | |
1720 | { | |
1721 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1722 | srel->size += p->count * sizeof (Elf64_External_Rela); |
c434dee6 AJ |
1723 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1724 | info->flags |= DF_TEXTREL; | |
1725 | ||
1726 | } | |
70256ad8 AJ |
1727 | } |
1728 | } | |
c434dee6 AJ |
1729 | |
1730 | local_got = elf_local_got_refcounts (ibfd); | |
1731 | if (!local_got) | |
1732 | continue; | |
1733 | ||
1734 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
1735 | locsymcount = symtab_hdr->sh_info; | |
1736 | end_local_got = local_got + locsymcount; | |
bffbf940 | 1737 | local_tls_type = elf64_x86_64_local_got_tls_type (ibfd); |
67a4f2b7 | 1738 | local_tlsdesc_gotent = elf64_x86_64_local_tlsdesc_gotent (ibfd); |
c434dee6 AJ |
1739 | s = htab->sgot; |
1740 | srel = htab->srelgot; | |
67a4f2b7 AO |
1741 | for (; local_got < end_local_got; |
1742 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
70256ad8 | 1743 | { |
67a4f2b7 | 1744 | *local_tlsdesc_gotent = (bfd_vma) -1; |
c434dee6 | 1745 | if (*local_got > 0) |
70256ad8 | 1746 | { |
67a4f2b7 AO |
1747 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
1748 | { | |
1749 | *local_tlsdesc_gotent = htab->sgotplt->size | |
1750 | - elf64_x86_64_compute_jump_table_size (htab); | |
1751 | htab->sgotplt->size += 2 * GOT_ENTRY_SIZE; | |
1752 | *local_got = (bfd_vma) -2; | |
1753 | } | |
1754 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
1755 | || GOT_TLS_GD_P (*local_tls_type)) | |
1756 | { | |
1757 | *local_got = s->size; | |
1758 | s->size += GOT_ENTRY_SIZE; | |
1759 | if (GOT_TLS_GD_P (*local_tls_type)) | |
1760 | s->size += GOT_ENTRY_SIZE; | |
1761 | } | |
bffbf940 | 1762 | if (info->shared |
67a4f2b7 | 1763 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
bffbf940 | 1764 | || *local_tls_type == GOT_TLS_IE) |
67a4f2b7 AO |
1765 | { |
1766 | if (GOT_TLS_GDESC_P (*local_tls_type)) | |
1767 | { | |
1768 | htab->srelplt->size += sizeof (Elf64_External_Rela); | |
1769 | htab->tlsdesc_plt = (bfd_vma) -1; | |
1770 | } | |
1771 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
1772 | || GOT_TLS_GD_P (*local_tls_type)) | |
1773 | srel->size += sizeof (Elf64_External_Rela); | |
1774 | } | |
70256ad8 AJ |
1775 | } |
1776 | else | |
c434dee6 AJ |
1777 | *local_got = (bfd_vma) -1; |
1778 | } | |
1779 | } | |
70256ad8 | 1780 | |
bffbf940 JJ |
1781 | if (htab->tls_ld_got.refcount > 0) |
1782 | { | |
1783 | /* Allocate 2 got entries and 1 dynamic reloc for R_X86_64_TLSLD | |
1784 | relocs. */ | |
eea6121a AM |
1785 | htab->tls_ld_got.offset = htab->sgot->size; |
1786 | htab->sgot->size += 2 * GOT_ENTRY_SIZE; | |
1787 | htab->srelgot->size += sizeof (Elf64_External_Rela); | |
bffbf940 JJ |
1788 | } |
1789 | else | |
1790 | htab->tls_ld_got.offset = -1; | |
1791 | ||
c434dee6 AJ |
1792 | /* Allocate global sym .plt and .got entries, and space for global |
1793 | sym dynamic relocs. */ | |
1794 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); | |
1795 | ||
67a4f2b7 AO |
1796 | /* For every jump slot reserved in the sgotplt, reloc_count is |
1797 | incremented. However, when we reserve space for TLS descriptors, | |
1798 | it's not incremented, so in order to compute the space reserved | |
1799 | for them, it suffices to multiply the reloc count by the jump | |
1800 | slot size. */ | |
1801 | if (htab->srelplt) | |
1802 | htab->sgotplt_jump_table_size | |
1803 | = elf64_x86_64_compute_jump_table_size (htab); | |
1804 | ||
1805 | if (htab->tlsdesc_plt) | |
1806 | { | |
1807 | /* If we're not using lazy TLS relocations, don't generate the | |
1808 | PLT and GOT entries they require. */ | |
1809 | if ((info->flags & DF_BIND_NOW)) | |
1810 | htab->tlsdesc_plt = 0; | |
1811 | else | |
1812 | { | |
1813 | htab->tlsdesc_got = htab->sgot->size; | |
1814 | htab->sgot->size += GOT_ENTRY_SIZE; | |
1815 | /* Reserve room for the initial entry. | |
1816 | FIXME: we could probably do away with it in this case. */ | |
1817 | if (htab->splt->size == 0) | |
1818 | htab->splt->size += PLT_ENTRY_SIZE; | |
1819 | htab->tlsdesc_plt = htab->splt->size; | |
1820 | htab->splt->size += PLT_ENTRY_SIZE; | |
1821 | } | |
1822 | } | |
1823 | ||
c434dee6 AJ |
1824 | /* We now have determined the sizes of the various dynamic sections. |
1825 | Allocate memory for them. */ | |
b34976b6 | 1826 | relocs = FALSE; |
c434dee6 AJ |
1827 | for (s = dynobj->sections; s != NULL; s = s->next) |
1828 | { | |
1829 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1830 | continue; | |
1831 | ||
1832 | if (s == htab->splt | |
1833 | || s == htab->sgot | |
75ff4589 L |
1834 | || s == htab->sgotplt |
1835 | || s == htab->sdynbss) | |
c434dee6 AJ |
1836 | { |
1837 | /* Strip this section if we don't need it; see the | |
1838 | comment below. */ | |
1839 | } | |
1840 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) | |
1841 | { | |
eea6121a | 1842 | if (s->size != 0 && s != htab->srelplt) |
b34976b6 | 1843 | relocs = TRUE; |
c434dee6 AJ |
1844 | |
1845 | /* We use the reloc_count field as a counter if we need | |
1846 | to copy relocs into the output file. */ | |
67a4f2b7 AO |
1847 | if (s != htab->srelplt) |
1848 | s->reloc_count = 0; | |
70256ad8 | 1849 | } |
c434dee6 | 1850 | else |
70256ad8 AJ |
1851 | { |
1852 | /* It's not one of our sections, so don't allocate space. */ | |
1853 | continue; | |
1854 | } | |
1855 | ||
eea6121a | 1856 | if (s->size == 0) |
70256ad8 | 1857 | { |
c434dee6 AJ |
1858 | /* If we don't need this section, strip it from the |
1859 | output file. This is mostly to handle .rela.bss and | |
1860 | .rela.plt. We must create both sections in | |
1861 | create_dynamic_sections, because they must be created | |
1862 | before the linker maps input sections to output | |
1863 | sections. The linker does that before | |
1864 | adjust_dynamic_symbol is called, and it is that | |
1865 | function which decides whether anything needs to go | |
1866 | into these sections. */ | |
1867 | ||
8423293d | 1868 | s->flags |= SEC_EXCLUDE; |
70256ad8 AJ |
1869 | continue; |
1870 | } | |
1871 | ||
c456f082 AM |
1872 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1873 | continue; | |
1874 | ||
70256ad8 AJ |
1875 | /* Allocate memory for the section contents. We use bfd_zalloc |
1876 | here in case unused entries are not reclaimed before the | |
1877 | section's contents are written out. This should not happen, | |
1878 | but this way if it does, we get a R_X86_64_NONE reloc instead | |
1879 | of garbage. */ | |
eea6121a | 1880 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c434dee6 | 1881 | if (s->contents == NULL) |
b34976b6 | 1882 | return FALSE; |
70256ad8 AJ |
1883 | } |
1884 | ||
c434dee6 | 1885 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
1886 | { |
1887 | /* Add some entries to the .dynamic section. We fill in the | |
1888 | values later, in elf64_x86_64_finish_dynamic_sections, but we | |
1889 | must add the entries now so that we get the correct size for | |
407443a3 | 1890 | the .dynamic section. The DT_DEBUG entry is filled in by the |
70256ad8 | 1891 | dynamic linker and used by the debugger. */ |
dc810e39 | 1892 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1893 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 1894 | |
36af4a4e | 1895 | if (info->executable) |
70256ad8 | 1896 | { |
dc810e39 | 1897 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1898 | return FALSE; |
70256ad8 AJ |
1899 | } |
1900 | ||
eea6121a | 1901 | if (htab->splt->size != 0) |
70256ad8 | 1902 | { |
dc810e39 AM |
1903 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1904 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1905 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1906 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1907 | return FALSE; |
67a4f2b7 AO |
1908 | |
1909 | if (htab->tlsdesc_plt | |
1910 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
1911 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
1912 | return FALSE; | |
70256ad8 AJ |
1913 | } |
1914 | ||
1915 | if (relocs) | |
1916 | { | |
dc810e39 AM |
1917 | if (!add_dynamic_entry (DT_RELA, 0) |
1918 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1919 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 1920 | return FALSE; |
70256ad8 | 1921 | |
c434dee6 AJ |
1922 | /* If any dynamic relocs apply to a read-only section, |
1923 | then we need a DT_TEXTREL entry. */ | |
1924 | if ((info->flags & DF_TEXTREL) == 0) | |
1925 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
1926 | (PTR) info); | |
1927 | ||
1928 | if ((info->flags & DF_TEXTREL) != 0) | |
1929 | { | |
1930 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1931 | return FALSE; |
c434dee6 | 1932 | } |
70256ad8 AJ |
1933 | } |
1934 | } | |
dc810e39 | 1935 | #undef add_dynamic_entry |
70256ad8 | 1936 | |
b34976b6 | 1937 | return TRUE; |
70256ad8 AJ |
1938 | } |
1939 | ||
67a4f2b7 AO |
1940 | static bfd_boolean |
1941 | elf64_x86_64_always_size_sections (bfd *output_bfd, | |
1942 | struct bfd_link_info *info) | |
1943 | { | |
1944 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
1945 | ||
1946 | if (tls_sec) | |
1947 | { | |
1948 | struct elf_link_hash_entry *tlsbase; | |
1949 | ||
1950 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
1951 | "_TLS_MODULE_BASE_", | |
1952 | FALSE, FALSE, FALSE); | |
1953 | ||
1954 | if (tlsbase && tlsbase->type == STT_TLS) | |
1955 | { | |
1956 | struct bfd_link_hash_entry *bh = NULL; | |
1957 | const struct elf_backend_data *bed | |
1958 | = get_elf_backend_data (output_bfd); | |
1959 | ||
1960 | if (!(_bfd_generic_link_add_one_symbol | |
1961 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
1962 | tls_sec, 0, NULL, FALSE, | |
1963 | bed->collect, &bh))) | |
1964 | return FALSE; | |
1965 | tlsbase = (struct elf_link_hash_entry *)bh; | |
1966 | tlsbase->def_regular = 1; | |
1967 | tlsbase->other = STV_HIDDEN; | |
1968 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
1969 | } | |
1970 | } | |
1971 | ||
1972 | return TRUE; | |
1973 | } | |
1974 | ||
bffbf940 JJ |
1975 | /* Return the base VMA address which should be subtracted from real addresses |
1976 | when resolving @dtpoff relocation. | |
1977 | This is PT_TLS segment p_vaddr. */ | |
1978 | ||
1979 | static bfd_vma | |
27482721 | 1980 | dtpoff_base (struct bfd_link_info *info) |
bffbf940 | 1981 | { |
e1918d23 AM |
1982 | /* If tls_sec is NULL, we should have signalled an error already. */ |
1983 | if (elf_hash_table (info)->tls_sec == NULL) | |
bffbf940 | 1984 | return 0; |
e1918d23 | 1985 | return elf_hash_table (info)->tls_sec->vma; |
bffbf940 JJ |
1986 | } |
1987 | ||
1988 | /* Return the relocation value for @tpoff relocation | |
1989 | if STT_TLS virtual address is ADDRESS. */ | |
1990 | ||
1991 | static bfd_vma | |
27482721 | 1992 | tpoff (struct bfd_link_info *info, bfd_vma address) |
bffbf940 | 1993 | { |
e1918d23 | 1994 | struct elf_link_hash_table *htab = elf_hash_table (info); |
bffbf940 JJ |
1995 | |
1996 | /* If tls_segment is NULL, we should have signalled an error already. */ | |
e1918d23 | 1997 | if (htab->tls_sec == NULL) |
bffbf940 | 1998 | return 0; |
e1918d23 | 1999 | return address - htab->tls_size - htab->tls_sec->vma; |
bffbf940 JJ |
2000 | } |
2001 | ||
90f487df L |
2002 | /* Is the instruction before OFFSET in CONTENTS a 32bit relative |
2003 | branch? */ | |
2004 | ||
2005 | static bfd_boolean | |
2006 | is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset) | |
2007 | { | |
2008 | /* Opcode Instruction | |
2009 | 0xe8 call | |
2010 | 0xe9 jump | |
2011 | 0x0f 0x8x conditional jump */ | |
2012 | return ((offset > 0 | |
2013 | && (contents [offset - 1] == 0xe8 | |
2014 | || contents [offset - 1] == 0xe9)) | |
2015 | || (offset > 1 | |
2016 | && contents [offset - 2] == 0x0f | |
2017 | && (contents [offset - 1] & 0xf0) == 0x80)); | |
2018 | } | |
2019 | ||
8d88c4ca NC |
2020 | /* Relocate an x86_64 ELF section. */ |
2021 | ||
b34976b6 | 2022 | static bfd_boolean |
27482721 AJ |
2023 | elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
2024 | bfd *input_bfd, asection *input_section, | |
2025 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
2026 | Elf_Internal_Sym *local_syms, | |
2027 | asection **local_sections) | |
8d88c4ca | 2028 | { |
c434dee6 | 2029 | struct elf64_x86_64_link_hash_table *htab; |
8d88c4ca NC |
2030 | Elf_Internal_Shdr *symtab_hdr; |
2031 | struct elf_link_hash_entry **sym_hashes; | |
2032 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 2033 | bfd_vma *local_tlsdesc_gotents; |
c434dee6 | 2034 | Elf_Internal_Rela *rel; |
8d88c4ca NC |
2035 | Elf_Internal_Rela *relend; |
2036 | ||
1049f94e | 2037 | if (info->relocatable) |
b34976b6 | 2038 | return TRUE; |
b491616a | 2039 | |
c434dee6 | 2040 | htab = elf64_x86_64_hash_table (info); |
8d88c4ca NC |
2041 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
2042 | sym_hashes = elf_sym_hashes (input_bfd); | |
2043 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
67a4f2b7 | 2044 | local_tlsdesc_gotents = elf64_x86_64_local_tlsdesc_gotent (input_bfd); |
8d88c4ca | 2045 | |
c434dee6 | 2046 | rel = relocs; |
8d88c4ca | 2047 | relend = relocs + input_section->reloc_count; |
c434dee6 | 2048 | for (; rel < relend; rel++) |
8d88c4ca | 2049 | { |
bffbf940 | 2050 | unsigned int r_type; |
8d88c4ca NC |
2051 | reloc_howto_type *howto; |
2052 | unsigned long r_symndx; | |
2053 | struct elf_link_hash_entry *h; | |
2054 | Elf_Internal_Sym *sym; | |
2055 | asection *sec; | |
67a4f2b7 | 2056 | bfd_vma off, offplt; |
8d88c4ca | 2057 | bfd_vma relocation; |
b34976b6 | 2058 | bfd_boolean unresolved_reloc; |
8d88c4ca | 2059 | bfd_reloc_status_type r; |
bffbf940 | 2060 | int tls_type; |
8d88c4ca | 2061 | |
c434dee6 | 2062 | r_type = ELF64_R_TYPE (rel->r_info); |
fe4770f4 AJ |
2063 | if (r_type == (int) R_X86_64_GNU_VTINHERIT |
2064 | || r_type == (int) R_X86_64_GNU_VTENTRY) | |
2065 | continue; | |
8d88c4ca | 2066 | |
bffbf940 | 2067 | if (r_type >= R_X86_64_max) |
8da6118f KH |
2068 | { |
2069 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2070 | return FALSE; |
8da6118f | 2071 | } |
8d88c4ca | 2072 | |
b491616a | 2073 | howto = x86_64_elf_howto_table + r_type; |
c434dee6 | 2074 | r_symndx = ELF64_R_SYM (rel->r_info); |
8d88c4ca NC |
2075 | h = NULL; |
2076 | sym = NULL; | |
2077 | sec = NULL; | |
b34976b6 | 2078 | unresolved_reloc = FALSE; |
8d88c4ca | 2079 | if (r_symndx < symtab_hdr->sh_info) |
8da6118f KH |
2080 | { |
2081 | sym = local_syms + r_symndx; | |
2082 | sec = local_sections[r_symndx]; | |
c434dee6 | 2083 | |
8517fae7 | 2084 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
8da6118f | 2085 | } |
8d88c4ca | 2086 | else |
8da6118f | 2087 | { |
560e09e9 | 2088 | bfd_boolean warned; |
c434dee6 | 2089 | |
b2a8e766 AM |
2090 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2091 | r_symndx, symtab_hdr, sym_hashes, | |
2092 | h, sec, relocation, | |
2093 | unresolved_reloc, warned); | |
8da6118f | 2094 | } |
70256ad8 AJ |
2095 | /* When generating a shared object, the relocations handled here are |
2096 | copied into the output file to be resolved at run time. */ | |
2097 | switch (r_type) | |
2098 | { | |
2099 | case R_X86_64_GOT32: | |
2100 | /* Relocation is to the entry for this symbol in the global | |
2101 | offset table. */ | |
70256ad8 AJ |
2102 | case R_X86_64_GOTPCREL: |
2103 | /* Use global offset table as symbol value. */ | |
c434dee6 AJ |
2104 | if (htab->sgot == NULL) |
2105 | abort (); | |
053579d7 | 2106 | |
51e0a107 | 2107 | if (h != NULL) |
70256ad8 | 2108 | { |
b34976b6 | 2109 | bfd_boolean dyn; |
c434dee6 AJ |
2110 | |
2111 | off = h->got.offset; | |
2112 | dyn = htab->elf.dynamic_sections_created; | |
51e0a107 | 2113 | |
27482721 | 2114 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
51e0a107 | 2115 | || (info->shared |
27482721 | 2116 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4bc6e03a AJ |
2117 | || (ELF_ST_VISIBILITY (h->other) |
2118 | && h->root.type == bfd_link_hash_undefweak)) | |
51e0a107 JH |
2119 | { |
2120 | /* This is actually a static link, or it is a -Bsymbolic | |
2121 | link and the symbol is defined locally, or the symbol | |
407443a3 | 2122 | was forced to be local because of a version file. We |
51e0a107 JH |
2123 | must initialize this entry in the global offset table. |
2124 | Since the offset must always be a multiple of 8, we | |
2125 | use the least significant bit to record whether we | |
2126 | have initialized it already. | |
2127 | ||
2128 | When doing a dynamic link, we create a .rela.got | |
407443a3 AJ |
2129 | relocation entry to initialize the value. This is |
2130 | done in the finish_dynamic_symbol routine. */ | |
51e0a107 JH |
2131 | if ((off & 1) != 0) |
2132 | off &= ~1; | |
2133 | else | |
2134 | { | |
2135 | bfd_put_64 (output_bfd, relocation, | |
c434dee6 | 2136 | htab->sgot->contents + off); |
51e0a107 JH |
2137 | h->got.offset |= 1; |
2138 | } | |
2139 | } | |
053579d7 | 2140 | else |
b34976b6 | 2141 | unresolved_reloc = FALSE; |
70256ad8 | 2142 | } |
51e0a107 JH |
2143 | else |
2144 | { | |
c434dee6 AJ |
2145 | if (local_got_offsets == NULL) |
2146 | abort (); | |
51e0a107 JH |
2147 | |
2148 | off = local_got_offsets[r_symndx]; | |
2149 | ||
2150 | /* The offset must always be a multiple of 8. We use | |
407443a3 AJ |
2151 | the least significant bit to record whether we have |
2152 | already generated the necessary reloc. */ | |
51e0a107 JH |
2153 | if ((off & 1) != 0) |
2154 | off &= ~1; | |
2155 | else | |
2156 | { | |
c434dee6 AJ |
2157 | bfd_put_64 (output_bfd, relocation, |
2158 | htab->sgot->contents + off); | |
51e0a107 JH |
2159 | |
2160 | if (info->shared) | |
2161 | { | |
947216bf | 2162 | asection *s; |
51e0a107 | 2163 | Elf_Internal_Rela outrel; |
947216bf | 2164 | bfd_byte *loc; |
70256ad8 | 2165 | |
51e0a107 JH |
2166 | /* We need to generate a R_X86_64_RELATIVE reloc |
2167 | for the dynamic linker. */ | |
947216bf AM |
2168 | s = htab->srelgot; |
2169 | if (s == NULL) | |
c434dee6 | 2170 | abort (); |
51e0a107 | 2171 | |
c434dee6 AJ |
2172 | outrel.r_offset = (htab->sgot->output_section->vma |
2173 | + htab->sgot->output_offset | |
51e0a107 JH |
2174 | + off); |
2175 | outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE); | |
2176 | outrel.r_addend = relocation; | |
947216bf AM |
2177 | loc = s->contents; |
2178 | loc += s->reloc_count++ * sizeof (Elf64_External_Rela); | |
c434dee6 | 2179 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
51e0a107 JH |
2180 | } |
2181 | ||
2182 | local_got_offsets[r_symndx] |= 1; | |
2183 | } | |
51e0a107 | 2184 | } |
6a2bda3f | 2185 | |
c434dee6 AJ |
2186 | if (off >= (bfd_vma) -2) |
2187 | abort (); | |
2188 | ||
8c37241b JJ |
2189 | relocation = htab->sgot->output_section->vma |
2190 | + htab->sgot->output_offset + off; | |
2191 | if (r_type != R_X86_64_GOTPCREL) | |
2192 | relocation -= htab->sgotplt->output_section->vma | |
2193 | - htab->sgotplt->output_offset; | |
c434dee6 | 2194 | |
70256ad8 AJ |
2195 | break; |
2196 | ||
d6ab8113 JB |
2197 | case R_X86_64_GOTOFF64: |
2198 | /* Relocation is relative to the start of the global offset | |
2199 | table. */ | |
2200 | ||
2201 | /* Check to make sure it isn't a protected function symbol | |
2202 | for shared library since it may not be local when used | |
2203 | as function address. */ | |
2204 | if (info->shared | |
2205 | && h | |
2206 | && h->def_regular | |
2207 | && h->type == STT_FUNC | |
2208 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
2209 | { | |
2210 | (*_bfd_error_handler) | |
2211 | (_("%B: relocation R_X86_64_GOTOFF64 against protected function `%s' can not be used when making a shared object"), | |
2212 | input_bfd, h->root.root.string); | |
2213 | bfd_set_error (bfd_error_bad_value); | |
2214 | return FALSE; | |
2215 | } | |
2216 | ||
2217 | /* Note that sgot is not involved in this | |
2218 | calculation. We always want the start of .got.plt. If we | |
2219 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
2220 | permitted by the ABI, we might have to change this | |
2221 | calculation. */ | |
2222 | relocation -= htab->sgotplt->output_section->vma | |
2223 | + htab->sgotplt->output_offset; | |
2224 | break; | |
2225 | ||
2226 | case R_X86_64_GOTPC32: | |
2227 | /* Use global offset table as symbol value. */ | |
2228 | relocation = htab->sgotplt->output_section->vma | |
2229 | + htab->sgotplt->output_offset; | |
2230 | unresolved_reloc = FALSE; | |
2231 | break; | |
2232 | ||
70256ad8 AJ |
2233 | case R_X86_64_PLT32: |
2234 | /* Relocation is to the entry for this symbol in the | |
2235 | procedure linkage table. */ | |
2236 | ||
2237 | /* Resolve a PLT32 reloc against a local symbol directly, | |
407443a3 | 2238 | without using the procedure linkage table. */ |
70256ad8 AJ |
2239 | if (h == NULL) |
2240 | break; | |
2241 | ||
c434dee6 AJ |
2242 | if (h->plt.offset == (bfd_vma) -1 |
2243 | || htab->splt == NULL) | |
70256ad8 AJ |
2244 | { |
2245 | /* We didn't make a PLT entry for this symbol. This | |
407443a3 AJ |
2246 | happens when statically linking PIC code, or when |
2247 | using -Bsymbolic. */ | |
70256ad8 AJ |
2248 | break; |
2249 | } | |
2250 | ||
c434dee6 AJ |
2251 | relocation = (htab->splt->output_section->vma |
2252 | + htab->splt->output_offset | |
70256ad8 | 2253 | + h->plt.offset); |
b34976b6 | 2254 | unresolved_reloc = FALSE; |
70256ad8 AJ |
2255 | break; |
2256 | ||
fd8ab9e5 AJ |
2257 | case R_X86_64_PC8: |
2258 | case R_X86_64_PC16: | |
2259 | case R_X86_64_PC32: | |
6610a52d L |
2260 | if (info->shared |
2261 | && !SYMBOL_REFERENCES_LOCAL (info, h) | |
ba3bee0b | 2262 | && (input_section->flags & SEC_ALLOC) != 0 |
90f487df L |
2263 | && (input_section->flags & SEC_READONLY) != 0 |
2264 | && (!h->def_regular | |
2265 | || r_type != R_X86_64_PC32 | |
2266 | || h->type != STT_FUNC | |
2267 | || ELF_ST_VISIBILITY (h->other) != STV_PROTECTED | |
2268 | || !is_32bit_relative_branch (contents, | |
2269 | rel->r_offset))) | |
6610a52d | 2270 | { |
90f487df L |
2271 | if (h->def_regular |
2272 | && r_type == R_X86_64_PC32 | |
2273 | && h->type == STT_FUNC | |
2274 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
2275 | (*_bfd_error_handler) | |
2276 | (_("%B: relocation R_X86_64_PC32 against protected function `%s' can not be used when making a shared object"), | |
2277 | input_bfd, h->root.root.string); | |
2278 | else | |
2279 | (*_bfd_error_handler) | |
2280 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), | |
2281 | input_bfd, x86_64_elf_howto_table[r_type].name, | |
2282 | h->root.root.string); | |
6610a52d L |
2283 | bfd_set_error (bfd_error_bad_value); |
2284 | return FALSE; | |
2285 | } | |
2286 | /* Fall through. */ | |
2287 | ||
70256ad8 AJ |
2288 | case R_X86_64_8: |
2289 | case R_X86_64_16: | |
2290 | case R_X86_64_32: | |
d6ab8113 | 2291 | case R_X86_64_PC64: |
6b3db546 | 2292 | case R_X86_64_64: |
80643fbc | 2293 | /* FIXME: The ABI says the linker should make sure the value is |
407443a3 | 2294 | the same when it's zeroextended to 64 bit. */ |
c434dee6 AJ |
2295 | |
2296 | /* r_symndx will be zero only for relocs against symbols | |
2297 | from removed linkonce sections, or sections discarded by | |
2298 | a linker script. */ | |
2299 | if (r_symndx == 0 | |
2300 | || (input_section->flags & SEC_ALLOC) == 0) | |
2301 | break; | |
2302 | ||
2303 | if ((info->shared | |
4bc6e03a AJ |
2304 | && (h == NULL |
2305 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2306 | || h->root.type != bfd_link_hash_undefweak) | |
c434dee6 AJ |
2307 | && ((r_type != R_X86_64_PC8 |
2308 | && r_type != R_X86_64_PC16 | |
d6ab8113 JB |
2309 | && r_type != R_X86_64_PC32 |
2310 | && r_type != R_X86_64_PC64) | |
f6c52c13 | 2311 | || !SYMBOL_CALLS_LOCAL (info, h))) |
d40d037c AJ |
2312 | || (ELIMINATE_COPY_RELOCS |
2313 | && !info->shared | |
c434dee6 AJ |
2314 | && h != NULL |
2315 | && h->dynindx != -1 | |
f5385ebf AM |
2316 | && !h->non_got_ref |
2317 | && ((h->def_dynamic | |
2318 | && !h->def_regular) | |
c434dee6 AJ |
2319 | || h->root.type == bfd_link_hash_undefweak |
2320 | || h->root.type == bfd_link_hash_undefined))) | |
70256ad8 AJ |
2321 | { |
2322 | Elf_Internal_Rela outrel; | |
947216bf | 2323 | bfd_byte *loc; |
b34976b6 | 2324 | bfd_boolean skip, relocate; |
c434dee6 | 2325 | asection *sreloc; |
70256ad8 AJ |
2326 | |
2327 | /* When generating a shared object, these relocations | |
2328 | are copied into the output file to be resolved at run | |
407443a3 | 2329 | time. */ |
b34976b6 AM |
2330 | skip = FALSE; |
2331 | relocate = FALSE; | |
70256ad8 | 2332 | |
c629eae0 JJ |
2333 | outrel.r_offset = |
2334 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
c434dee6 | 2335 | rel->r_offset); |
c629eae0 | 2336 | if (outrel.r_offset == (bfd_vma) -1) |
b34976b6 | 2337 | skip = TRUE; |
0fb19cbc | 2338 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2339 | skip = TRUE, relocate = TRUE; |
70256ad8 AJ |
2340 | |
2341 | outrel.r_offset += (input_section->output_section->vma | |
2342 | + input_section->output_offset); | |
2343 | ||
2344 | if (skip) | |
0bb2d96a | 2345 | memset (&outrel, 0, sizeof outrel); |
c434dee6 | 2346 | |
fd8ab9e5 AJ |
2347 | /* h->dynindx may be -1 if this symbol was marked to |
2348 | become local. */ | |
2349 | else if (h != NULL | |
c434dee6 AJ |
2350 | && h->dynindx != -1 |
2351 | && (r_type == R_X86_64_PC8 | |
2352 | || r_type == R_X86_64_PC16 | |
2353 | || r_type == R_X86_64_PC32 | |
d6ab8113 | 2354 | || r_type == R_X86_64_PC64 |
c434dee6 AJ |
2355 | || !info->shared |
2356 | || !info->symbolic | |
f5385ebf | 2357 | || !h->def_regular)) |
70256ad8 | 2358 | { |
70256ad8 | 2359 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); |
c434dee6 | 2360 | outrel.r_addend = rel->r_addend; |
70256ad8 AJ |
2361 | } |
2362 | else | |
2363 | { | |
c434dee6 | 2364 | /* This symbol is local, or marked to become local. */ |
607c0e09 AS |
2365 | if (r_type == R_X86_64_64) |
2366 | { | |
b34976b6 | 2367 | relocate = TRUE; |
607c0e09 AS |
2368 | outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE); |
2369 | outrel.r_addend = relocation + rel->r_addend; | |
2370 | } | |
2371 | else | |
2372 | { | |
2373 | long sindx; | |
2374 | ||
8517fae7 | 2375 | if (bfd_is_abs_section (sec)) |
607c0e09 AS |
2376 | sindx = 0; |
2377 | else if (sec == NULL || sec->owner == NULL) | |
2378 | { | |
2379 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2380 | return FALSE; |
607c0e09 AS |
2381 | } |
2382 | else | |
2383 | { | |
2384 | asection *osec; | |
2385 | ||
2386 | osec = sec->output_section; | |
2387 | sindx = elf_section_data (osec)->dynindx; | |
2388 | BFD_ASSERT (sindx > 0); | |
2389 | } | |
2390 | ||
2391 | outrel.r_info = ELF64_R_INFO (sindx, r_type); | |
2392 | outrel.r_addend = relocation + rel->r_addend; | |
2393 | } | |
70256ad8 AJ |
2394 | } |
2395 | ||
c434dee6 AJ |
2396 | sreloc = elf_section_data (input_section)->sreloc; |
2397 | if (sreloc == NULL) | |
2398 | abort (); | |
2399 | ||
947216bf AM |
2400 | loc = sreloc->contents; |
2401 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
c434dee6 | 2402 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
70256ad8 AJ |
2403 | |
2404 | /* If this reloc is against an external symbol, we do | |
2405 | not want to fiddle with the addend. Otherwise, we | |
2406 | need to include the symbol value so that it becomes | |
2407 | an addend for the dynamic reloc. */ | |
2408 | if (! relocate) | |
2409 | continue; | |
2410 | } | |
2411 | ||
2412 | break; | |
2413 | ||
bffbf940 | 2414 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
2415 | case R_X86_64_GOTPC32_TLSDESC: |
2416 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 JJ |
2417 | case R_X86_64_GOTTPOFF: |
2418 | r_type = elf64_x86_64_tls_transition (info, r_type, h == NULL); | |
2419 | tls_type = GOT_UNKNOWN; | |
2420 | if (h == NULL && local_got_offsets) | |
2421 | tls_type = elf64_x86_64_local_got_tls_type (input_bfd) [r_symndx]; | |
2422 | else if (h != NULL) | |
2423 | { | |
2424 | tls_type = elf64_x86_64_hash_entry (h)->tls_type; | |
2425 | if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE) | |
2426 | r_type = R_X86_64_TPOFF32; | |
2427 | } | |
67a4f2b7 AO |
2428 | if (r_type == R_X86_64_TLSGD |
2429 | || r_type == R_X86_64_GOTPC32_TLSDESC | |
2430 | || r_type == R_X86_64_TLSDESC_CALL) | |
bffbf940 JJ |
2431 | { |
2432 | if (tls_type == GOT_TLS_IE) | |
2433 | r_type = R_X86_64_GOTTPOFF; | |
2434 | } | |
2435 | ||
2436 | if (r_type == R_X86_64_TPOFF32) | |
2437 | { | |
2438 | BFD_ASSERT (! unresolved_reloc); | |
2439 | if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSGD) | |
2440 | { | |
2441 | unsigned int i; | |
abcf1d52 JJ |
2442 | static unsigned char tlsgd[8] |
2443 | = { 0x66, 0x48, 0x8d, 0x3d, 0x66, 0x66, 0x48, 0xe8 }; | |
bffbf940 JJ |
2444 | |
2445 | /* GD->LE transition. | |
abcf1d52 JJ |
2446 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
2447 | .word 0x6666; rex64; call __tls_get_addr@plt | |
bffbf940 JJ |
2448 | Change it into: |
2449 | movq %fs:0, %rax | |
2450 | leaq foo@tpoff(%rax), %rax */ | |
abcf1d52 JJ |
2451 | BFD_ASSERT (rel->r_offset >= 4); |
2452 | for (i = 0; i < 4; i++) | |
bffbf940 | 2453 | BFD_ASSERT (bfd_get_8 (input_bfd, |
abcf1d52 | 2454 | contents + rel->r_offset - 4 + i) |
bffbf940 | 2455 | == tlsgd[i]); |
eea6121a | 2456 | BFD_ASSERT (rel->r_offset + 12 <= input_section->size); |
abcf1d52 JJ |
2457 | for (i = 0; i < 4; i++) |
2458 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2459 | contents + rel->r_offset + 4 + i) | |
2460 | == tlsgd[i+4]); | |
bffbf940 JJ |
2461 | BFD_ASSERT (rel + 1 < relend); |
2462 | BFD_ASSERT (ELF64_R_TYPE (rel[1].r_info) == R_X86_64_PLT32); | |
abcf1d52 | 2463 | memcpy (contents + rel->r_offset - 4, |
bffbf940 JJ |
2464 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", |
2465 | 16); | |
2466 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
abcf1d52 | 2467 | contents + rel->r_offset + 8); |
bffbf940 JJ |
2468 | /* Skip R_X86_64_PLT32. */ |
2469 | rel++; | |
2470 | continue; | |
2471 | } | |
67a4f2b7 AO |
2472 | else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC) |
2473 | { | |
2474 | /* GDesc -> LE transition. | |
2475 | It's originally something like: | |
2476 | leaq x@tlsdesc(%rip), %rax | |
2477 | ||
2478 | Change it to: | |
2479 | movl $x@tpoff, %rax | |
2480 | ||
2481 | Registers other than %rax may be set up here. */ | |
2482 | ||
2483 | unsigned int val, type, type2; | |
2484 | bfd_vma roff; | |
2485 | ||
2486 | /* First, make sure it's a leaq adding rip to a | |
2487 | 32-bit offset into any register, although it's | |
2488 | probably almost always going to be rax. */ | |
2489 | roff = rel->r_offset; | |
2490 | BFD_ASSERT (roff >= 3); | |
2491 | type = bfd_get_8 (input_bfd, contents + roff - 3); | |
2492 | BFD_ASSERT ((type & 0xfb) == 0x48); | |
2493 | type2 = bfd_get_8 (input_bfd, contents + roff - 2); | |
2494 | BFD_ASSERT (type2 == 0x8d); | |
2495 | val = bfd_get_8 (input_bfd, contents + roff - 1); | |
2496 | BFD_ASSERT ((val & 0xc7) == 0x05); | |
2497 | BFD_ASSERT (roff + 4 <= input_section->size); | |
2498 | ||
2499 | /* Now modify the instruction as appropriate. */ | |
2500 | bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1), | |
2501 | contents + roff - 3); | |
2502 | bfd_put_8 (output_bfd, 0xc7, contents + roff - 2); | |
2503 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2504 | contents + roff - 1); | |
2505 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
2506 | contents + roff); | |
2507 | continue; | |
2508 | } | |
2509 | else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL) | |
2510 | { | |
2511 | /* GDesc -> LE transition. | |
2512 | It's originally: | |
2513 | call *(%rax) | |
2514 | Turn it into: | |
2515 | nop; nop. */ | |
2516 | ||
2517 | unsigned int val, type; | |
2518 | bfd_vma roff; | |
2519 | ||
2520 | /* First, make sure it's a call *(%rax). */ | |
2521 | roff = rel->r_offset; | |
2522 | BFD_ASSERT (roff + 2 <= input_section->size); | |
2523 | type = bfd_get_8 (input_bfd, contents + roff); | |
2524 | BFD_ASSERT (type == 0xff); | |
2525 | val = bfd_get_8 (input_bfd, contents + roff + 1); | |
2526 | BFD_ASSERT (val == 0x10); | |
2527 | ||
2528 | /* Now modify the instruction as appropriate. */ | |
2529 | bfd_put_8 (output_bfd, 0x90, contents + roff); | |
2530 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); | |
2531 | continue; | |
2532 | } | |
bffbf940 JJ |
2533 | else |
2534 | { | |
2535 | unsigned int val, type, reg; | |
2536 | ||
2537 | /* IE->LE transition: | |
2538 | Originally it can be one of: | |
2539 | movq foo@gottpoff(%rip), %reg | |
2540 | addq foo@gottpoff(%rip), %reg | |
2541 | We change it into: | |
2542 | movq $foo, %reg | |
2543 | leaq foo(%reg), %reg | |
2544 | addq $foo, %reg. */ | |
2545 | BFD_ASSERT (rel->r_offset >= 3); | |
2546 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 3); | |
2547 | BFD_ASSERT (val == 0x48 || val == 0x4c); | |
2548 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2549 | BFD_ASSERT (type == 0x8b || type == 0x03); | |
2550 | reg = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2551 | BFD_ASSERT ((reg & 0xc7) == 5); | |
2552 | reg >>= 3; | |
eea6121a | 2553 | BFD_ASSERT (rel->r_offset + 4 <= input_section->size); |
bffbf940 JJ |
2554 | if (type == 0x8b) |
2555 | { | |
2556 | /* movq */ | |
2557 | if (val == 0x4c) | |
2558 | bfd_put_8 (output_bfd, 0x49, | |
2559 | contents + rel->r_offset - 3); | |
2560 | bfd_put_8 (output_bfd, 0xc7, | |
2561 | contents + rel->r_offset - 2); | |
2562 | bfd_put_8 (output_bfd, 0xc0 | reg, | |
2563 | contents + rel->r_offset - 1); | |
2564 | } | |
2565 | else if (reg == 4) | |
2566 | { | |
2567 | /* addq -> addq - addressing with %rsp/%r12 is | |
2568 | special */ | |
2569 | if (val == 0x4c) | |
2570 | bfd_put_8 (output_bfd, 0x49, | |
2571 | contents + rel->r_offset - 3); | |
2572 | bfd_put_8 (output_bfd, 0x81, | |
2573 | contents + rel->r_offset - 2); | |
2574 | bfd_put_8 (output_bfd, 0xc0 | reg, | |
2575 | contents + rel->r_offset - 1); | |
2576 | } | |
2577 | else | |
2578 | { | |
2579 | /* addq -> leaq */ | |
2580 | if (val == 0x4c) | |
2581 | bfd_put_8 (output_bfd, 0x4d, | |
2582 | contents + rel->r_offset - 3); | |
2583 | bfd_put_8 (output_bfd, 0x8d, | |
2584 | contents + rel->r_offset - 2); | |
2585 | bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3), | |
2586 | contents + rel->r_offset - 1); | |
2587 | } | |
2588 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
2589 | contents + rel->r_offset); | |
2590 | continue; | |
2591 | } | |
2592 | } | |
2593 | ||
2594 | if (htab->sgot == NULL) | |
2595 | abort (); | |
2596 | ||
2597 | if (h != NULL) | |
67a4f2b7 AO |
2598 | { |
2599 | off = h->got.offset; | |
2600 | offplt = elf64_x86_64_hash_entry (h)->tlsdesc_got; | |
2601 | } | |
bffbf940 JJ |
2602 | else |
2603 | { | |
2604 | if (local_got_offsets == NULL) | |
2605 | abort (); | |
2606 | ||
2607 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 2608 | offplt = local_tlsdesc_gotents[r_symndx]; |
bffbf940 JJ |
2609 | } |
2610 | ||
2611 | if ((off & 1) != 0) | |
2612 | off &= ~1; | |
26e41594 | 2613 | else |
bffbf940 JJ |
2614 | { |
2615 | Elf_Internal_Rela outrel; | |
947216bf | 2616 | bfd_byte *loc; |
bffbf940 | 2617 | int dr_type, indx; |
67a4f2b7 | 2618 | asection *sreloc; |
bffbf940 JJ |
2619 | |
2620 | if (htab->srelgot == NULL) | |
2621 | abort (); | |
2622 | ||
67a4f2b7 AO |
2623 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
2624 | ||
2625 | if (GOT_TLS_GDESC_P (tls_type)) | |
2626 | { | |
2627 | outrel.r_info = ELF64_R_INFO (indx, R_X86_64_TLSDESC); | |
2628 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt | |
2629 | + 2 * GOT_ENTRY_SIZE <= htab->sgotplt->size); | |
2630 | outrel.r_offset = (htab->sgotplt->output_section->vma | |
2631 | + htab->sgotplt->output_offset | |
2632 | + offplt | |
2633 | + htab->sgotplt_jump_table_size); | |
2634 | sreloc = htab->srelplt; | |
2635 | loc = sreloc->contents; | |
2636 | loc += sreloc->reloc_count++ | |
2637 | * sizeof (Elf64_External_Rela); | |
2638 | BFD_ASSERT (loc + sizeof (Elf64_External_Rela) | |
2639 | <= sreloc->contents + sreloc->size); | |
2640 | if (indx == 0) | |
2641 | outrel.r_addend = relocation - dtpoff_base (info); | |
2642 | else | |
2643 | outrel.r_addend = 0; | |
2644 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2645 | } | |
2646 | ||
2647 | sreloc = htab->srelgot; | |
2648 | ||
bffbf940 JJ |
2649 | outrel.r_offset = (htab->sgot->output_section->vma |
2650 | + htab->sgot->output_offset + off); | |
2651 | ||
67a4f2b7 | 2652 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 | 2653 | dr_type = R_X86_64_DTPMOD64; |
67a4f2b7 AO |
2654 | else if (GOT_TLS_GDESC_P (tls_type)) |
2655 | goto dr_done; | |
bffbf940 JJ |
2656 | else |
2657 | dr_type = R_X86_64_TPOFF64; | |
2658 | ||
2659 | bfd_put_64 (output_bfd, 0, htab->sgot->contents + off); | |
2660 | outrel.r_addend = 0; | |
67a4f2b7 AO |
2661 | if ((dr_type == R_X86_64_TPOFF64 |
2662 | || dr_type == R_X86_64_TLSDESC) && indx == 0) | |
bffbf940 JJ |
2663 | outrel.r_addend = relocation - dtpoff_base (info); |
2664 | outrel.r_info = ELF64_R_INFO (indx, dr_type); | |
2665 | ||
67a4f2b7 AO |
2666 | loc = sreloc->contents; |
2667 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2668 | BFD_ASSERT (loc + sizeof (Elf64_External_Rela) | |
2669 | <= sreloc->contents + sreloc->size); | |
bffbf940 JJ |
2670 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
2671 | ||
67a4f2b7 | 2672 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 JJ |
2673 | { |
2674 | if (indx == 0) | |
2675 | { | |
d40d037c | 2676 | BFD_ASSERT (! unresolved_reloc); |
bffbf940 JJ |
2677 | bfd_put_64 (output_bfd, |
2678 | relocation - dtpoff_base (info), | |
2679 | htab->sgot->contents + off + GOT_ENTRY_SIZE); | |
2680 | } | |
2681 | else | |
2682 | { | |
2683 | bfd_put_64 (output_bfd, 0, | |
2684 | htab->sgot->contents + off + GOT_ENTRY_SIZE); | |
2685 | outrel.r_info = ELF64_R_INFO (indx, | |
2686 | R_X86_64_DTPOFF64); | |
2687 | outrel.r_offset += GOT_ENTRY_SIZE; | |
67a4f2b7 | 2688 | sreloc->reloc_count++; |
947216bf | 2689 | loc += sizeof (Elf64_External_Rela); |
67a4f2b7 AO |
2690 | BFD_ASSERT (loc + sizeof (Elf64_External_Rela) |
2691 | <= sreloc->contents + sreloc->size); | |
947216bf | 2692 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
bffbf940 JJ |
2693 | } |
2694 | } | |
2695 | ||
67a4f2b7 | 2696 | dr_done: |
bffbf940 JJ |
2697 | if (h != NULL) |
2698 | h->got.offset |= 1; | |
2699 | else | |
2700 | local_got_offsets[r_symndx] |= 1; | |
2701 | } | |
2702 | ||
67a4f2b7 AO |
2703 | if (off >= (bfd_vma) -2 |
2704 | && ! GOT_TLS_GDESC_P (tls_type)) | |
bffbf940 JJ |
2705 | abort (); |
2706 | if (r_type == ELF64_R_TYPE (rel->r_info)) | |
2707 | { | |
67a4f2b7 AO |
2708 | if (r_type == R_X86_64_GOTPC32_TLSDESC |
2709 | || r_type == R_X86_64_TLSDESC_CALL) | |
2710 | relocation = htab->sgotplt->output_section->vma | |
2711 | + htab->sgotplt->output_offset | |
2712 | + offplt + htab->sgotplt_jump_table_size; | |
2713 | else | |
2714 | relocation = htab->sgot->output_section->vma | |
2715 | + htab->sgot->output_offset + off; | |
b34976b6 | 2716 | unresolved_reloc = FALSE; |
bffbf940 | 2717 | } |
67a4f2b7 | 2718 | else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSGD) |
bffbf940 JJ |
2719 | { |
2720 | unsigned int i; | |
abcf1d52 JJ |
2721 | static unsigned char tlsgd[8] |
2722 | = { 0x66, 0x48, 0x8d, 0x3d, 0x66, 0x66, 0x48, 0xe8 }; | |
bffbf940 JJ |
2723 | |
2724 | /* GD->IE transition. | |
abcf1d52 JJ |
2725 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
2726 | .word 0x6666; rex64; call __tls_get_addr@plt | |
bffbf940 JJ |
2727 | Change it into: |
2728 | movq %fs:0, %rax | |
2729 | addq foo@gottpoff(%rip), %rax */ | |
abcf1d52 JJ |
2730 | BFD_ASSERT (rel->r_offset >= 4); |
2731 | for (i = 0; i < 4; i++) | |
26e41594 | 2732 | BFD_ASSERT (bfd_get_8 (input_bfd, |
abcf1d52 | 2733 | contents + rel->r_offset - 4 + i) |
bffbf940 | 2734 | == tlsgd[i]); |
eea6121a | 2735 | BFD_ASSERT (rel->r_offset + 12 <= input_section->size); |
abcf1d52 | 2736 | for (i = 0; i < 4; i++) |
26e41594 | 2737 | BFD_ASSERT (bfd_get_8 (input_bfd, |
abcf1d52 JJ |
2738 | contents + rel->r_offset + 4 + i) |
2739 | == tlsgd[i+4]); | |
bffbf940 JJ |
2740 | BFD_ASSERT (rel + 1 < relend); |
2741 | BFD_ASSERT (ELF64_R_TYPE (rel[1].r_info) == R_X86_64_PLT32); | |
abcf1d52 | 2742 | memcpy (contents + rel->r_offset - 4, |
bffbf940 JJ |
2743 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", |
2744 | 16); | |
2745 | ||
2746 | relocation = (htab->sgot->output_section->vma | |
2747 | + htab->sgot->output_offset + off | |
2748 | - rel->r_offset | |
2749 | - input_section->output_section->vma | |
2750 | - input_section->output_offset | |
abcf1d52 | 2751 | - 12); |
bffbf940 | 2752 | bfd_put_32 (output_bfd, relocation, |
abcf1d52 | 2753 | contents + rel->r_offset + 8); |
bffbf940 JJ |
2754 | /* Skip R_X86_64_PLT32. */ |
2755 | rel++; | |
2756 | continue; | |
2757 | } | |
67a4f2b7 AO |
2758 | else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC) |
2759 | { | |
2760 | /* GDesc -> IE transition. | |
2761 | It's originally something like: | |
2762 | leaq x@tlsdesc(%rip), %rax | |
2763 | ||
2764 | Change it to: | |
2765 | movq x@gottpoff(%rip), %rax # before nop; nop | |
2766 | ||
2767 | Registers other than %rax may be set up here. */ | |
2768 | ||
2769 | unsigned int val, type, type2; | |
2770 | bfd_vma roff; | |
2771 | ||
2772 | /* First, make sure it's a leaq adding rip to a 32-bit | |
2773 | offset into any register, although it's probably | |
2774 | almost always going to be rax. */ | |
2775 | roff = rel->r_offset; | |
2776 | BFD_ASSERT (roff >= 3); | |
2777 | type = bfd_get_8 (input_bfd, contents + roff - 3); | |
2778 | BFD_ASSERT ((type & 0xfb) == 0x48); | |
2779 | type2 = bfd_get_8 (input_bfd, contents + roff - 2); | |
2780 | BFD_ASSERT (type2 == 0x8d); | |
2781 | val = bfd_get_8 (input_bfd, contents + roff - 1); | |
2782 | BFD_ASSERT ((val & 0xc7) == 0x05); | |
2783 | BFD_ASSERT (roff + 4 <= input_section->size); | |
2784 | ||
2785 | /* Now modify the instruction as appropriate. */ | |
2786 | /* To turn a leaq into a movq in the form we use it, it | |
2787 | suffices to change the second byte from 0x8d to | |
2788 | 0x8b. */ | |
2789 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
2790 | ||
2791 | bfd_put_32 (output_bfd, | |
2792 | htab->sgot->output_section->vma | |
2793 | + htab->sgot->output_offset + off | |
2794 | - rel->r_offset | |
2795 | - input_section->output_section->vma | |
2796 | - input_section->output_offset | |
2797 | - 4, | |
2798 | contents + roff); | |
2799 | continue; | |
2800 | } | |
2801 | else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL) | |
2802 | { | |
2803 | /* GDesc -> IE transition. | |
2804 | It's originally: | |
2805 | call *(%rax) | |
2806 | ||
2807 | Change it to: | |
2808 | nop; nop. */ | |
2809 | ||
2810 | unsigned int val, type; | |
2811 | bfd_vma roff; | |
2812 | ||
2813 | /* First, make sure it's a call *(%eax). */ | |
2814 | roff = rel->r_offset; | |
2815 | BFD_ASSERT (roff + 2 <= input_section->size); | |
2816 | type = bfd_get_8 (input_bfd, contents + roff); | |
2817 | BFD_ASSERT (type == 0xff); | |
2818 | val = bfd_get_8 (input_bfd, contents + roff + 1); | |
2819 | BFD_ASSERT (val == 0x10); | |
2820 | ||
2821 | /* Now modify the instruction as appropriate. */ | |
2822 | bfd_put_8 (output_bfd, 0x90, contents + roff); | |
2823 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); | |
2824 | ||
2825 | continue; | |
2826 | } | |
2827 | else | |
2828 | BFD_ASSERT (FALSE); | |
bffbf940 JJ |
2829 | break; |
2830 | ||
2831 | case R_X86_64_TLSLD: | |
2832 | if (! info->shared) | |
2833 | { | |
2834 | /* LD->LE transition: | |
2835 | Ensure it is: | |
2836 | leaq foo@tlsld(%rip), %rdi; call __tls_get_addr@plt. | |
2837 | We change it into: | |
2838 | .word 0x6666; .byte 0x66; movl %fs:0, %rax. */ | |
2839 | BFD_ASSERT (rel->r_offset >= 3); | |
2840 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 3) | |
2841 | == 0x48); | |
2842 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2) | |
2843 | == 0x8d); | |
2844 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 1) | |
2845 | == 0x3d); | |
eea6121a | 2846 | BFD_ASSERT (rel->r_offset + 9 <= input_section->size); |
bffbf940 JJ |
2847 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) |
2848 | == 0xe8); | |
2849 | BFD_ASSERT (rel + 1 < relend); | |
2850 | BFD_ASSERT (ELF64_R_TYPE (rel[1].r_info) == R_X86_64_PLT32); | |
2851 | memcpy (contents + rel->r_offset - 3, | |
2852 | "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12); | |
2853 | /* Skip R_X86_64_PLT32. */ | |
2854 | rel++; | |
2855 | continue; | |
2856 | } | |
2857 | ||
2858 | if (htab->sgot == NULL) | |
2859 | abort (); | |
2860 | ||
2861 | off = htab->tls_ld_got.offset; | |
2862 | if (off & 1) | |
2863 | off &= ~1; | |
2864 | else | |
2865 | { | |
2866 | Elf_Internal_Rela outrel; | |
947216bf | 2867 | bfd_byte *loc; |
bffbf940 JJ |
2868 | |
2869 | if (htab->srelgot == NULL) | |
2870 | abort (); | |
2871 | ||
2872 | outrel.r_offset = (htab->sgot->output_section->vma | |
2873 | + htab->sgot->output_offset + off); | |
2874 | ||
2875 | bfd_put_64 (output_bfd, 0, | |
2876 | htab->sgot->contents + off); | |
2877 | bfd_put_64 (output_bfd, 0, | |
2878 | htab->sgot->contents + off + GOT_ENTRY_SIZE); | |
2879 | outrel.r_info = ELF64_R_INFO (0, R_X86_64_DTPMOD64); | |
2880 | outrel.r_addend = 0; | |
947216bf AM |
2881 | loc = htab->srelgot->contents; |
2882 | loc += htab->srelgot->reloc_count++ * sizeof (Elf64_External_Rela); | |
bffbf940 JJ |
2883 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
2884 | htab->tls_ld_got.offset |= 1; | |
2885 | } | |
2886 | relocation = htab->sgot->output_section->vma | |
2887 | + htab->sgot->output_offset + off; | |
b34976b6 | 2888 | unresolved_reloc = FALSE; |
bffbf940 JJ |
2889 | break; |
2890 | ||
2891 | case R_X86_64_DTPOFF32: | |
a45bb67d | 2892 | if (info->shared || (input_section->flags & SEC_CODE) == 0) |
bffbf940 JJ |
2893 | relocation -= dtpoff_base (info); |
2894 | else | |
2895 | relocation = tpoff (info, relocation); | |
2896 | break; | |
2897 | ||
2898 | case R_X86_64_TPOFF32: | |
2899 | BFD_ASSERT (! info->shared); | |
2900 | relocation = tpoff (info, relocation); | |
2901 | break; | |
2902 | ||
70256ad8 AJ |
2903 | default: |
2904 | break; | |
2905 | } | |
8d88c4ca | 2906 | |
239e1f3a AM |
2907 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
2908 | because such sections are not SEC_ALLOC and thus ld.so will | |
2909 | not process them. */ | |
c434dee6 | 2910 | if (unresolved_reloc |
239e1f3a | 2911 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 2912 | && h->def_dynamic)) |
c434dee6 | 2913 | (*_bfd_error_handler) |
843fe662 | 2914 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
2915 | input_bfd, |
2916 | input_section, | |
c434dee6 | 2917 | (long) rel->r_offset, |
843fe662 | 2918 | howto->name, |
c434dee6 AJ |
2919 | h->root.root.string); |
2920 | ||
8d88c4ca | 2921 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
c434dee6 AJ |
2922 | contents, rel->r_offset, |
2923 | relocation, rel->r_addend); | |
8d88c4ca NC |
2924 | |
2925 | if (r != bfd_reloc_ok) | |
8da6118f | 2926 | { |
c434dee6 AJ |
2927 | const char *name; |
2928 | ||
2929 | if (h != NULL) | |
2930 | name = h->root.root.string; | |
2931 | else | |
8da6118f | 2932 | { |
c434dee6 AJ |
2933 | name = bfd_elf_string_from_elf_section (input_bfd, |
2934 | symtab_hdr->sh_link, | |
2935 | sym->st_name); | |
2936 | if (name == NULL) | |
b34976b6 | 2937 | return FALSE; |
c434dee6 AJ |
2938 | if (*name == '\0') |
2939 | name = bfd_section_name (input_bfd, sec); | |
2940 | } | |
2941 | ||
2942 | if (r == bfd_reloc_overflow) | |
2943 | { | |
3ffa5234 AM |
2944 | if (h != NULL |
2945 | && h->root.type == bfd_link_hash_undefweak | |
2946 | && howto->pc_relative) | |
2947 | /* Ignore reloc overflow on branches to undefweak syms. */ | |
2948 | continue; | |
c434dee6 AJ |
2949 | |
2950 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
2951 | (info, (h ? &h->root : NULL), name, howto->name, |
2952 | (bfd_vma) 0, input_bfd, input_section, | |
2953 | rel->r_offset))) | |
b34976b6 | 2954 | return FALSE; |
c434dee6 AJ |
2955 | } |
2956 | else | |
2957 | { | |
2958 | (*_bfd_error_handler) | |
d003868e AM |
2959 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
2960 | input_bfd, input_section, | |
c434dee6 | 2961 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 2962 | return FALSE; |
8da6118f KH |
2963 | } |
2964 | } | |
8d88c4ca | 2965 | } |
70256ad8 | 2966 | |
b34976b6 | 2967 | return TRUE; |
70256ad8 AJ |
2968 | } |
2969 | ||
2970 | /* Finish up dynamic symbol handling. We set the contents of various | |
2971 | dynamic sections here. */ | |
2972 | ||
b34976b6 | 2973 | static bfd_boolean |
27482721 AJ |
2974 | elf64_x86_64_finish_dynamic_symbol (bfd *output_bfd, |
2975 | struct bfd_link_info *info, | |
2976 | struct elf_link_hash_entry *h, | |
2977 | Elf_Internal_Sym *sym) | |
70256ad8 | 2978 | { |
c434dee6 | 2979 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 | 2980 | |
c434dee6 | 2981 | htab = elf64_x86_64_hash_table (info); |
70256ad8 AJ |
2982 | |
2983 | if (h->plt.offset != (bfd_vma) -1) | |
2984 | { | |
70256ad8 AJ |
2985 | bfd_vma plt_index; |
2986 | bfd_vma got_offset; | |
2987 | Elf_Internal_Rela rela; | |
947216bf | 2988 | bfd_byte *loc; |
70256ad8 AJ |
2989 | |
2990 | /* This symbol has an entry in the procedure linkage table. Set | |
407443a3 | 2991 | it up. */ |
c434dee6 AJ |
2992 | if (h->dynindx == -1 |
2993 | || htab->splt == NULL | |
2994 | || htab->sgotplt == NULL | |
2995 | || htab->srelplt == NULL) | |
2996 | abort (); | |
70256ad8 AJ |
2997 | |
2998 | /* Get the index in the procedure linkage table which | |
2999 | corresponds to this symbol. This is the index of this symbol | |
3000 | in all the symbols for which we are making plt entries. The | |
3001 | first entry in the procedure linkage table is reserved. */ | |
3002 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3003 | ||
3004 | /* Get the offset into the .got table of the entry that | |
407443a3 | 3005 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE |
fe4770f4 | 3006 | bytes. The first three are reserved for the dynamic linker. */ |
70256ad8 AJ |
3007 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; |
3008 | ||
3009 | /* Fill in the entry in the procedure linkage table. */ | |
c434dee6 | 3010 | memcpy (htab->splt->contents + h->plt.offset, elf64_x86_64_plt_entry, |
70256ad8 AJ |
3011 | PLT_ENTRY_SIZE); |
3012 | ||
3013 | /* Insert the relocation positions of the plt section. The magic | |
3014 | numbers at the end of the statements are the positions of the | |
3015 | relocations in the plt section. */ | |
653165cc AJ |
3016 | /* Put offset for jmp *name@GOTPCREL(%rip), since the |
3017 | instruction uses 6 bytes, subtract this value. */ | |
3018 | bfd_put_32 (output_bfd, | |
c434dee6 AJ |
3019 | (htab->sgotplt->output_section->vma |
3020 | + htab->sgotplt->output_offset | |
653165cc | 3021 | + got_offset |
c434dee6 AJ |
3022 | - htab->splt->output_section->vma |
3023 | - htab->splt->output_offset | |
653165cc AJ |
3024 | - h->plt.offset |
3025 | - 6), | |
c434dee6 | 3026 | htab->splt->contents + h->plt.offset + 2); |
653165cc AJ |
3027 | /* Put relocation index. */ |
3028 | bfd_put_32 (output_bfd, plt_index, | |
c434dee6 | 3029 | htab->splt->contents + h->plt.offset + 7); |
653165cc AJ |
3030 | /* Put offset for jmp .PLT0. */ |
3031 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), | |
c434dee6 | 3032 | htab->splt->contents + h->plt.offset + 12); |
70256ad8 | 3033 | |
653165cc AJ |
3034 | /* Fill in the entry in the global offset table, initially this |
3035 | points to the pushq instruction in the PLT which is at offset 6. */ | |
c434dee6 AJ |
3036 | bfd_put_64 (output_bfd, (htab->splt->output_section->vma |
3037 | + htab->splt->output_offset | |
70256ad8 | 3038 | + h->plt.offset + 6), |
c434dee6 | 3039 | htab->sgotplt->contents + got_offset); |
70256ad8 AJ |
3040 | |
3041 | /* Fill in the entry in the .rela.plt section. */ | |
c434dee6 AJ |
3042 | rela.r_offset = (htab->sgotplt->output_section->vma |
3043 | + htab->sgotplt->output_offset | |
70256ad8 AJ |
3044 | + got_offset); |
3045 | rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_JUMP_SLOT); | |
3046 | rela.r_addend = 0; | |
947216bf | 3047 | loc = htab->srelplt->contents + plt_index * sizeof (Elf64_External_Rela); |
c434dee6 | 3048 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
70256ad8 | 3049 | |
f5385ebf | 3050 | if (!h->def_regular) |
70256ad8 AJ |
3051 | { |
3052 | /* Mark the symbol as undefined, rather than as defined in | |
47a9f7b3 JJ |
3053 | the .plt section. Leave the value if there were any |
3054 | relocations where pointer equality matters (this is a clue | |
c434dee6 AJ |
3055 | for the dynamic linker, to make function pointer |
3056 | comparisons work between an application and shared | |
47a9f7b3 JJ |
3057 | library), otherwise set it to zero. If a function is only |
3058 | called from a binary, there is no need to slow down | |
3059 | shared libraries because of that. */ | |
70256ad8 | 3060 | sym->st_shndx = SHN_UNDEF; |
f5385ebf | 3061 | if (!h->pointer_equality_needed) |
47a9f7b3 | 3062 | sym->st_value = 0; |
70256ad8 AJ |
3063 | } |
3064 | } | |
3065 | ||
bffbf940 | 3066 | if (h->got.offset != (bfd_vma) -1 |
67a4f2b7 | 3067 | && ! GOT_TLS_GD_ANY_P (elf64_x86_64_hash_entry (h)->tls_type) |
bffbf940 | 3068 | && elf64_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE) |
053579d7 | 3069 | { |
053579d7 | 3070 | Elf_Internal_Rela rela; |
947216bf | 3071 | bfd_byte *loc; |
053579d7 AJ |
3072 | |
3073 | /* This symbol has an entry in the global offset table. Set it | |
bffbf940 | 3074 | up. */ |
c434dee6 AJ |
3075 | if (htab->sgot == NULL || htab->srelgot == NULL) |
3076 | abort (); | |
053579d7 | 3077 | |
c434dee6 AJ |
3078 | rela.r_offset = (htab->sgot->output_section->vma |
3079 | + htab->sgot->output_offset | |
dc810e39 | 3080 | + (h->got.offset &~ (bfd_vma) 1)); |
053579d7 AJ |
3081 | |
3082 | /* If this is a static link, or it is a -Bsymbolic link and the | |
3083 | symbol is defined locally or was forced to be local because | |
3084 | of a version file, we just want to emit a RELATIVE reloc. | |
3085 | The entry in the global offset table will already have been | |
3086 | initialized in the relocate_section function. */ | |
c434dee6 | 3087 | if (info->shared |
27482721 | 3088 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
053579d7 | 3089 | { |
cc78d0af | 3090 | BFD_ASSERT((h->got.offset & 1) != 0); |
053579d7 AJ |
3091 | rela.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE); |
3092 | rela.r_addend = (h->root.u.def.value | |
3093 | + h->root.u.def.section->output_section->vma | |
3094 | + h->root.u.def.section->output_offset); | |
3095 | } | |
3096 | else | |
3097 | { | |
3098 | BFD_ASSERT((h->got.offset & 1) == 0); | |
c434dee6 AJ |
3099 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
3100 | htab->sgot->contents + h->got.offset); | |
053579d7 AJ |
3101 | rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_GLOB_DAT); |
3102 | rela.r_addend = 0; | |
3103 | } | |
3104 | ||
947216bf AM |
3105 | loc = htab->srelgot->contents; |
3106 | loc += htab->srelgot->reloc_count++ * sizeof (Elf64_External_Rela); | |
c434dee6 | 3107 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
053579d7 AJ |
3108 | } |
3109 | ||
f5385ebf | 3110 | if (h->needs_copy) |
70256ad8 | 3111 | { |
70256ad8 | 3112 | Elf_Internal_Rela rela; |
947216bf | 3113 | bfd_byte *loc; |
70256ad8 AJ |
3114 | |
3115 | /* This symbol needs a copy reloc. Set it up. */ | |
3116 | ||
c434dee6 AJ |
3117 | if (h->dynindx == -1 |
3118 | || (h->root.type != bfd_link_hash_defined | |
3119 | && h->root.type != bfd_link_hash_defweak) | |
3120 | || htab->srelbss == NULL) | |
3121 | abort (); | |
70256ad8 AJ |
3122 | |
3123 | rela.r_offset = (h->root.u.def.value | |
3124 | + h->root.u.def.section->output_section->vma | |
3125 | + h->root.u.def.section->output_offset); | |
3126 | rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_COPY); | |
3127 | rela.r_addend = 0; | |
947216bf AM |
3128 | loc = htab->srelbss->contents; |
3129 | loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
c434dee6 | 3130 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
70256ad8 AJ |
3131 | } |
3132 | ||
3133 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
3134 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 | 3135 | || h == htab->elf.hgot) |
70256ad8 AJ |
3136 | sym->st_shndx = SHN_ABS; |
3137 | ||
b34976b6 | 3138 | return TRUE; |
70256ad8 AJ |
3139 | } |
3140 | ||
c434dee6 AJ |
3141 | /* Used to decide how to sort relocs in an optimal manner for the |
3142 | dynamic linker, before writing them out. */ | |
3143 | ||
3144 | static enum elf_reloc_type_class | |
27482721 | 3145 | elf64_x86_64_reloc_type_class (const Elf_Internal_Rela *rela) |
c434dee6 AJ |
3146 | { |
3147 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
3148 | { | |
3149 | case R_X86_64_RELATIVE: | |
3150 | return reloc_class_relative; | |
3151 | case R_X86_64_JUMP_SLOT: | |
3152 | return reloc_class_plt; | |
3153 | case R_X86_64_COPY: | |
3154 | return reloc_class_copy; | |
3155 | default: | |
3156 | return reloc_class_normal; | |
3157 | } | |
3158 | } | |
3159 | ||
70256ad8 AJ |
3160 | /* Finish up the dynamic sections. */ |
3161 | ||
b34976b6 | 3162 | static bfd_boolean |
27482721 | 3163 | elf64_x86_64_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
70256ad8 | 3164 | { |
c434dee6 | 3165 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 AJ |
3166 | bfd *dynobj; |
3167 | asection *sdyn; | |
70256ad8 | 3168 | |
c434dee6 AJ |
3169 | htab = elf64_x86_64_hash_table (info); |
3170 | dynobj = htab->elf.dynobj; | |
70256ad8 AJ |
3171 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
3172 | ||
c434dee6 | 3173 | if (htab->elf.dynamic_sections_created) |
70256ad8 | 3174 | { |
70256ad8 AJ |
3175 | Elf64_External_Dyn *dyncon, *dynconend; |
3176 | ||
c434dee6 AJ |
3177 | if (sdyn == NULL || htab->sgot == NULL) |
3178 | abort (); | |
70256ad8 AJ |
3179 | |
3180 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 3181 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
70256ad8 AJ |
3182 | for (; dyncon < dynconend; dyncon++) |
3183 | { | |
3184 | Elf_Internal_Dyn dyn; | |
70256ad8 AJ |
3185 | asection *s; |
3186 | ||
3187 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
3188 | ||
3189 | switch (dyn.d_tag) | |
3190 | { | |
3191 | default: | |
053579d7 | 3192 | continue; |
70256ad8 AJ |
3193 | |
3194 | case DT_PLTGOT: | |
8c37241b JJ |
3195 | s = htab->sgotplt; |
3196 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
c434dee6 | 3197 | break; |
70256ad8 AJ |
3198 | |
3199 | case DT_JMPREL: | |
c434dee6 AJ |
3200 | dyn.d_un.d_ptr = htab->srelplt->output_section->vma; |
3201 | break; | |
70256ad8 | 3202 | |
c434dee6 AJ |
3203 | case DT_PLTRELSZ: |
3204 | s = htab->srelplt->output_section; | |
eea6121a | 3205 | dyn.d_un.d_val = s->size; |
70256ad8 AJ |
3206 | break; |
3207 | ||
3208 | case DT_RELASZ: | |
c434dee6 AJ |
3209 | /* The procedure linkage table relocs (DT_JMPREL) should |
3210 | not be included in the overall relocs (DT_RELA). | |
3211 | Therefore, we override the DT_RELASZ entry here to | |
3212 | make it not include the JMPREL relocs. Since the | |
3213 | linker script arranges for .rela.plt to follow all | |
3214 | other relocation sections, we don't have to worry | |
3215 | about changing the DT_RELA entry. */ | |
3216 | if (htab->srelplt != NULL) | |
70256ad8 | 3217 | { |
c434dee6 | 3218 | s = htab->srelplt->output_section; |
eea6121a | 3219 | dyn.d_un.d_val -= s->size; |
70256ad8 AJ |
3220 | } |
3221 | break; | |
67a4f2b7 AO |
3222 | |
3223 | case DT_TLSDESC_PLT: | |
3224 | s = htab->splt; | |
3225 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
3226 | + htab->tlsdesc_plt; | |
3227 | break; | |
3228 | ||
3229 | case DT_TLSDESC_GOT: | |
3230 | s = htab->sgot; | |
3231 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
3232 | + htab->tlsdesc_got; | |
3233 | break; | |
70256ad8 | 3234 | } |
c434dee6 | 3235 | |
70256ad8 AJ |
3236 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
3237 | } | |
3238 | ||
c434dee6 | 3239 | /* Fill in the special first entry in the procedure linkage table. */ |
eea6121a | 3240 | if (htab->splt && htab->splt->size > 0) |
70256ad8 | 3241 | { |
653165cc | 3242 | /* Fill in the first entry in the procedure linkage table. */ |
c434dee6 AJ |
3243 | memcpy (htab->splt->contents, elf64_x86_64_plt0_entry, |
3244 | PLT_ENTRY_SIZE); | |
653165cc AJ |
3245 | /* Add offset for pushq GOT+8(%rip), since the instruction |
3246 | uses 6 bytes subtract this value. */ | |
3247 | bfd_put_32 (output_bfd, | |
c434dee6 AJ |
3248 | (htab->sgotplt->output_section->vma |
3249 | + htab->sgotplt->output_offset | |
653165cc | 3250 | + 8 |
c434dee6 AJ |
3251 | - htab->splt->output_section->vma |
3252 | - htab->splt->output_offset | |
653165cc | 3253 | - 6), |
c434dee6 | 3254 | htab->splt->contents + 2); |
653165cc AJ |
3255 | /* Add offset for jmp *GOT+16(%rip). The 12 is the offset to |
3256 | the end of the instruction. */ | |
3257 | bfd_put_32 (output_bfd, | |
c434dee6 AJ |
3258 | (htab->sgotplt->output_section->vma |
3259 | + htab->sgotplt->output_offset | |
653165cc | 3260 | + 16 |
c434dee6 AJ |
3261 | - htab->splt->output_section->vma |
3262 | - htab->splt->output_offset | |
653165cc | 3263 | - 12), |
c434dee6 | 3264 | htab->splt->contents + 8); |
653165cc | 3265 | |
c434dee6 AJ |
3266 | elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize = |
3267 | PLT_ENTRY_SIZE; | |
67a4f2b7 AO |
3268 | |
3269 | if (htab->tlsdesc_plt) | |
3270 | { | |
3271 | bfd_put_64 (output_bfd, (bfd_vma) 0, | |
3272 | htab->sgot->contents + htab->tlsdesc_got); | |
3273 | ||
3274 | memcpy (htab->splt->contents + htab->tlsdesc_plt, | |
3275 | elf64_x86_64_plt0_entry, | |
3276 | PLT_ENTRY_SIZE); | |
3277 | ||
3278 | /* Add offset for pushq GOT+8(%rip), since the | |
3279 | instruction uses 6 bytes subtract this value. */ | |
3280 | bfd_put_32 (output_bfd, | |
3281 | (htab->sgotplt->output_section->vma | |
3282 | + htab->sgotplt->output_offset | |
3283 | + 8 | |
3284 | - htab->splt->output_section->vma | |
3285 | - htab->splt->output_offset | |
3286 | - htab->tlsdesc_plt | |
3287 | - 6), | |
3288 | htab->splt->contents + htab->tlsdesc_plt + 2); | |
3289 | /* Add offset for jmp *GOT+TDG(%rip), where TGD stands for | |
3290 | htab->tlsdesc_got. The 12 is the offset to the end of | |
3291 | the instruction. */ | |
3292 | bfd_put_32 (output_bfd, | |
3293 | (htab->sgot->output_section->vma | |
3294 | + htab->sgot->output_offset | |
3295 | + htab->tlsdesc_got | |
3296 | - htab->splt->output_section->vma | |
3297 | - htab->splt->output_offset | |
3298 | - htab->tlsdesc_plt | |
3299 | - 12), | |
3300 | htab->splt->contents + htab->tlsdesc_plt + 8); | |
3301 | } | |
70256ad8 | 3302 | } |
70256ad8 AJ |
3303 | } |
3304 | ||
c434dee6 | 3305 | if (htab->sgotplt) |
70256ad8 | 3306 | { |
c434dee6 | 3307 | /* Fill in the first three entries in the global offset table. */ |
eea6121a | 3308 | if (htab->sgotplt->size > 0) |
c434dee6 AJ |
3309 | { |
3310 | /* Set the first entry in the global offset table to the address of | |
3311 | the dynamic section. */ | |
3312 | if (sdyn == NULL) | |
3313 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents); | |
3314 | else | |
3315 | bfd_put_64 (output_bfd, | |
3316 | sdyn->output_section->vma + sdyn->output_offset, | |
3317 | htab->sgotplt->contents); | |
3318 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ | |
3319 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + GOT_ENTRY_SIZE); | |
3320 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + GOT_ENTRY_SIZE*2); | |
3321 | } | |
70256ad8 | 3322 | |
c434dee6 AJ |
3323 | elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = |
3324 | GOT_ENTRY_SIZE; | |
3325 | } | |
70256ad8 | 3326 | |
eea6121a | 3327 | if (htab->sgot && htab->sgot->size > 0) |
8c37241b JJ |
3328 | elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize |
3329 | = GOT_ENTRY_SIZE; | |
3330 | ||
b34976b6 | 3331 | return TRUE; |
8d88c4ca NC |
3332 | } |
3333 | ||
4c45e5c9 JJ |
3334 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
3335 | or (bfd_vma) -1 if it should not be included. */ | |
3336 | ||
3337 | static bfd_vma | |
3338 | elf64_x86_64_plt_sym_val (bfd_vma i, const asection *plt, | |
3339 | const arelent *rel ATTRIBUTE_UNUSED) | |
3340 | { | |
3341 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
3342 | } | |
8df9fc9d | 3343 | |
d2b2c203 DJ |
3344 | /* Handle an x86-64 specific section when reading an object file. This |
3345 | is called when elfcode.h finds a section with an unknown type. */ | |
3346 | ||
3347 | static bfd_boolean | |
6dc132d9 L |
3348 | elf64_x86_64_section_from_shdr (bfd *abfd, |
3349 | Elf_Internal_Shdr *hdr, | |
3350 | const char *name, | |
3351 | int shindex) | |
d2b2c203 DJ |
3352 | { |
3353 | if (hdr->sh_type != SHT_X86_64_UNWIND) | |
3354 | return FALSE; | |
3355 | ||
6dc132d9 | 3356 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
d2b2c203 DJ |
3357 | return FALSE; |
3358 | ||
3359 | return TRUE; | |
3360 | } | |
3361 | ||
3b22753a L |
3362 | /* Hook called by the linker routine which adds symbols from an object |
3363 | file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead | |
3364 | of .bss. */ | |
3365 | ||
3366 | static bfd_boolean | |
3367 | elf64_x86_64_add_symbol_hook (bfd *abfd, | |
3368 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3369 | Elf_Internal_Sym *sym, | |
3370 | const char **namep ATTRIBUTE_UNUSED, | |
3371 | flagword *flagsp ATTRIBUTE_UNUSED, | |
3372 | asection **secp, bfd_vma *valp) | |
3373 | { | |
3374 | asection *lcomm; | |
3375 | ||
3376 | switch (sym->st_shndx) | |
3377 | { | |
3378 | case SHN_X86_64_LCOMMON: | |
3379 | lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON"); | |
3380 | if (lcomm == NULL) | |
3381 | { | |
3382 | lcomm = bfd_make_section_with_flags (abfd, | |
3383 | "LARGE_COMMON", | |
3384 | (SEC_ALLOC | |
3385 | | SEC_IS_COMMON | |
3386 | | SEC_LINKER_CREATED)); | |
3387 | if (lcomm == NULL) | |
3388 | return FALSE; | |
3389 | elf_section_flags (lcomm) |= SHF_X86_64_LARGE; | |
3390 | } | |
3391 | *secp = lcomm; | |
3392 | *valp = sym->st_size; | |
3393 | break; | |
3394 | } | |
3395 | return TRUE; | |
3396 | } | |
3397 | ||
3398 | ||
3399 | /* Given a BFD section, try to locate the corresponding ELF section | |
3400 | index. */ | |
3401 | ||
3402 | static bfd_boolean | |
3403 | elf64_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, | |
3404 | asection *sec, int *index) | |
3405 | { | |
3406 | if (sec == &_bfd_elf_large_com_section) | |
3407 | { | |
3408 | *index = SHN_X86_64_LCOMMON; | |
3409 | return TRUE; | |
3410 | } | |
3411 | return FALSE; | |
3412 | } | |
3413 | ||
3414 | /* Process a symbol. */ | |
3415 | ||
3416 | static void | |
3417 | elf64_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
3418 | asymbol *asym) | |
3419 | { | |
3420 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
3421 | ||
3422 | switch (elfsym->internal_elf_sym.st_shndx) | |
3423 | { | |
3424 | case SHN_X86_64_LCOMMON: | |
3425 | asym->section = &_bfd_elf_large_com_section; | |
3426 | asym->value = elfsym->internal_elf_sym.st_size; | |
3427 | /* Common symbol doesn't set BSF_GLOBAL. */ | |
3428 | asym->flags &= ~BSF_GLOBAL; | |
3429 | break; | |
3430 | } | |
3431 | } | |
3432 | ||
3433 | static bfd_boolean | |
3434 | elf64_x86_64_common_definition (Elf_Internal_Sym *sym) | |
3435 | { | |
3436 | return (sym->st_shndx == SHN_COMMON | |
3437 | || sym->st_shndx == SHN_X86_64_LCOMMON); | |
3438 | } | |
3439 | ||
3440 | static unsigned int | |
3441 | elf64_x86_64_common_section_index (asection *sec) | |
3442 | { | |
3443 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
3444 | return SHN_COMMON; | |
3445 | else | |
3446 | return SHN_X86_64_LCOMMON; | |
3447 | } | |
3448 | ||
3449 | static asection * | |
3450 | elf64_x86_64_common_section (asection *sec) | |
3451 | { | |
3452 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
3453 | return bfd_com_section_ptr; | |
3454 | else | |
3455 | return &_bfd_elf_large_com_section; | |
3456 | } | |
3457 | ||
3458 | static bfd_boolean | |
3459 | elf64_x86_64_merge_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3460 | struct elf_link_hash_entry **sym_hash ATTRIBUTE_UNUSED, | |
3461 | struct elf_link_hash_entry *h, | |
3462 | Elf_Internal_Sym *sym, | |
00492999 | 3463 | asection **psec, |
3b22753a L |
3464 | bfd_vma *pvalue ATTRIBUTE_UNUSED, |
3465 | unsigned int *pold_alignment ATTRIBUTE_UNUSED, | |
3466 | bfd_boolean *skip ATTRIBUTE_UNUSED, | |
3467 | bfd_boolean *override ATTRIBUTE_UNUSED, | |
3468 | bfd_boolean *type_change_ok ATTRIBUTE_UNUSED, | |
3469 | bfd_boolean *size_change_ok ATTRIBUTE_UNUSED, | |
3470 | bfd_boolean *newdef ATTRIBUTE_UNUSED, | |
3471 | bfd_boolean *newdyn, | |
3472 | bfd_boolean *newdyncommon ATTRIBUTE_UNUSED, | |
3473 | bfd_boolean *newweak ATTRIBUTE_UNUSED, | |
3474 | bfd *abfd ATTRIBUTE_UNUSED, | |
3475 | asection **sec, | |
3476 | bfd_boolean *olddef ATTRIBUTE_UNUSED, | |
3477 | bfd_boolean *olddyn, | |
3478 | bfd_boolean *olddyncommon ATTRIBUTE_UNUSED, | |
3479 | bfd_boolean *oldweak ATTRIBUTE_UNUSED, | |
00492999 | 3480 | bfd *oldbfd, |
3b22753a L |
3481 | asection **oldsec) |
3482 | { | |
3483 | /* A normal common symbol and a large common symbol result in a | |
00492999 L |
3484 | normal common symbol. We turn the large common symbol into a |
3485 | normal one. */ | |
3b22753a L |
3486 | if (!*olddyn |
3487 | && h->root.type == bfd_link_hash_common | |
3488 | && !*newdyn | |
3489 | && bfd_is_com_section (*sec) | |
00492999 | 3490 | && *oldsec != *sec) |
3b22753a | 3491 | { |
00492999 L |
3492 | if (sym->st_shndx == SHN_COMMON |
3493 | && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) != 0) | |
3494 | { | |
3495 | h->root.u.c.p->section | |
3496 | = bfd_make_section_old_way (oldbfd, "COMMON"); | |
3497 | h->root.u.c.p->section->flags = SEC_ALLOC; | |
3498 | } | |
3499 | else if (sym->st_shndx == SHN_X86_64_LCOMMON | |
3500 | && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) == 0) | |
3501 | *psec = *sec = bfd_com_section_ptr; | |
3b22753a L |
3502 | } |
3503 | ||
3504 | return TRUE; | |
3505 | } | |
3506 | ||
3507 | static int | |
3508 | elf64_x86_64_additional_program_headers (bfd *abfd) | |
3509 | { | |
3510 | asection *s; | |
3511 | int count = 0; | |
3512 | ||
3513 | /* Check to see if we need a large readonly segment. */ | |
3514 | s = bfd_get_section_by_name (abfd, ".lrodata"); | |
3515 | if (s && (s->flags & SEC_LOAD)) | |
3516 | count++; | |
3517 | ||
3518 | /* Check to see if we need a large data segment. Since .lbss sections | |
3519 | is placed right after the .bss section, there should be no need for | |
3520 | a large data segment just because of .lbss. */ | |
3521 | s = bfd_get_section_by_name (abfd, ".ldata"); | |
3522 | if (s && (s->flags & SEC_LOAD)) | |
3523 | count++; | |
3524 | ||
3525 | return count; | |
3526 | } | |
3527 | ||
3528 | static const struct bfd_elf_special_section | |
3529 | elf64_x86_64_special_sections[]= | |
3530 | { | |
3531 | { ".gnu.linkonce.lb", 16, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
3532 | { ".gnu.linkonce.lr", 16, -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
3533 | { ".gnu.linkonce.lt", 16, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE}, | |
3534 | { ".lbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
3535 | { ".ldata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
3536 | { ".lrodata", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
3537 | { NULL, 0, 0, 0, 0 } | |
3538 | }; | |
3539 | ||
70256ad8 AJ |
3540 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_vec |
3541 | #define TARGET_LITTLE_NAME "elf64-x86-64" | |
3542 | #define ELF_ARCH bfd_arch_i386 | |
3543 | #define ELF_MACHINE_CODE EM_X86_64 | |
3544 | #define ELF_MAXPAGESIZE 0x100000 | |
3545 | ||
3546 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3547 | #define elf_backend_can_refcount 1 |
70256ad8 AJ |
3548 | #define elf_backend_want_got_plt 1 |
3549 | #define elf_backend_plt_readonly 1 | |
3550 | #define elf_backend_want_plt_sym 0 | |
3551 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE*3) | |
b491616a | 3552 | #define elf_backend_rela_normal 1 |
70256ad8 AJ |
3553 | |
3554 | #define elf_info_to_howto elf64_x86_64_info_to_howto | |
70256ad8 | 3555 | |
70256ad8 AJ |
3556 | #define bfd_elf64_bfd_link_hash_table_create \ |
3557 | elf64_x86_64_link_hash_table_create | |
407443a3 | 3558 | #define bfd_elf64_bfd_reloc_type_lookup elf64_x86_64_reloc_type_lookup |
70256ad8 AJ |
3559 | |
3560 | #define elf_backend_adjust_dynamic_symbol elf64_x86_64_adjust_dynamic_symbol | |
3561 | #define elf_backend_check_relocs elf64_x86_64_check_relocs | |
c434dee6 AJ |
3562 | #define elf_backend_copy_indirect_symbol elf64_x86_64_copy_indirect_symbol |
3563 | #define elf_backend_create_dynamic_sections elf64_x86_64_create_dynamic_sections | |
3564 | #define elf_backend_finish_dynamic_sections elf64_x86_64_finish_dynamic_sections | |
70256ad8 AJ |
3565 | #define elf_backend_finish_dynamic_symbol elf64_x86_64_finish_dynamic_symbol |
3566 | #define elf_backend_gc_mark_hook elf64_x86_64_gc_mark_hook | |
3567 | #define elf_backend_gc_sweep_hook elf64_x86_64_gc_sweep_hook | |
3bab7989 ML |
3568 | #define elf_backend_grok_prstatus elf64_x86_64_grok_prstatus |
3569 | #define elf_backend_grok_psinfo elf64_x86_64_grok_psinfo | |
c434dee6 | 3570 | #define elf_backend_reloc_type_class elf64_x86_64_reloc_type_class |
70256ad8 AJ |
3571 | #define elf_backend_relocate_section elf64_x86_64_relocate_section |
3572 | #define elf_backend_size_dynamic_sections elf64_x86_64_size_dynamic_sections | |
67a4f2b7 | 3573 | #define elf_backend_always_size_sections elf64_x86_64_always_size_sections |
4c45e5c9 | 3574 | #define elf_backend_plt_sym_val elf64_x86_64_plt_sym_val |
407443a3 | 3575 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
bffbf940 | 3576 | #define bfd_elf64_mkobject elf64_x86_64_mkobject |
8d88c4ca | 3577 | |
d2b2c203 DJ |
3578 | #define elf_backend_section_from_shdr \ |
3579 | elf64_x86_64_section_from_shdr | |
3580 | ||
3b22753a L |
3581 | #define elf_backend_section_from_bfd_section \ |
3582 | elf64_x86_64_elf_section_from_bfd_section | |
3583 | #define elf_backend_add_symbol_hook \ | |
3584 | elf64_x86_64_add_symbol_hook | |
3585 | #define elf_backend_symbol_processing \ | |
3586 | elf64_x86_64_symbol_processing | |
3587 | #define elf_backend_common_section_index \ | |
3588 | elf64_x86_64_common_section_index | |
3589 | #define elf_backend_common_section \ | |
3590 | elf64_x86_64_common_section | |
3591 | #define elf_backend_common_definition \ | |
3592 | elf64_x86_64_common_definition | |
3593 | #define elf_backend_merge_symbol \ | |
3594 | elf64_x86_64_merge_symbol | |
3595 | #define elf_backend_special_sections \ | |
3596 | elf64_x86_64_special_sections | |
3597 | #define elf_backend_additional_program_headers \ | |
3598 | elf64_x86_64_additional_program_headers | |
3599 | ||
8d88c4ca | 3600 | #include "elf64-target.h" |