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