Commit | Line | Data |
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351f65ca | 1 | /* X86-64 specific support for ELF |
4dfe6ac6 | 2 | Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
9f973f28 L |
3 | 2010, 2011 |
4 | Free Software Foundation, Inc. | |
8d88c4ca NC |
5 | Contributed by Jan Hubicka <jh@suse.cz>. |
6 | ||
ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
8d88c4ca | 8 | |
ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 12 | (at your option) any later version. |
8d88c4ca | 13 | |
ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
8d88c4ca | 18 | |
ae9a127f NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
22 | MA 02110-1301, USA. */ | |
8d88c4ca | 23 | |
8d88c4ca | 24 | #include "sysdep.h" |
3db64b00 | 25 | #include "bfd.h" |
c434dee6 | 26 | #include "bfdlink.h" |
8d88c4ca NC |
27 | #include "libbfd.h" |
28 | #include "elf-bfd.h" | |
142411ca | 29 | #include "bfd_stdint.h" |
c25bc9fc L |
30 | #include "objalloc.h" |
31 | #include "hashtab.h" | |
e41b3a13 | 32 | #include "dwarf2.h" |
d7921315 | 33 | #include "libiberty.h" |
8d88c4ca NC |
34 | |
35 | #include "elf/x86-64.h" | |
36 | ||
8fd79e71 L |
37 | #ifdef CORE_HEADER |
38 | #include <stdarg.h> | |
39 | #include CORE_HEADER | |
40 | #endif | |
41 | ||
8d88c4ca NC |
42 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ |
43 | #define MINUS_ONE (~ (bfd_vma) 0) | |
44 | ||
351f65ca L |
45 | /* Since both 32-bit and 64-bit x86-64 encode relocation type in the |
46 | identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get | |
47 | relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE | |
48 | since they are the same. */ | |
49 | ||
50 | #define ABI_64_P(abfd) \ | |
51 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) | |
52 | ||
8d88c4ca | 53 | /* The relocation "howto" table. Order of fields: |
7b81dfbb AJ |
54 | type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow, |
55 | special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */ | |
70256ad8 AJ |
56 | static reloc_howto_type x86_64_elf_howto_table[] = |
57 | { | |
b34976b6 AM |
58 | HOWTO(R_X86_64_NONE, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
59 | bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000, | |
60 | FALSE), | |
61 | HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
62 | bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE, | |
63 | FALSE), | |
64 | HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
65 | bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff, | |
66 | TRUE), | |
67 | HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
68 | bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff, | |
69 | FALSE), | |
70 | HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
71 | bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff, | |
72 | TRUE), | |
73 | HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
74 | bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff, | |
75 | FALSE), | |
76 | HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
77 | bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE, | |
78 | MINUS_ONE, FALSE), | |
79 | HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
80 | bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE, | |
81 | MINUS_ONE, FALSE), | |
82 | HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
83 | bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE, | |
84 | MINUS_ONE, FALSE), | |
85 | HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
86 | bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff, | |
87 | 0xffffffff, TRUE), | |
88 | HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned, | |
89 | bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff, | |
90 | FALSE), | |
91 | HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
92 | bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff, | |
93 | FALSE), | |
94 | HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
95 | bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE), | |
b0360d8c | 96 | HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield, |
b34976b6 | 97 | bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE), |
ac2aa337 | 98 | HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
b34976b6 AM |
99 | bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE), |
100 | HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
101 | bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE), | |
102 | HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
103 | bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE, | |
104 | MINUS_ONE, FALSE), | |
105 | HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
106 | bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE, | |
107 | MINUS_ONE, FALSE), | |
108 | HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
109 | bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE, | |
110 | MINUS_ONE, FALSE), | |
111 | HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
112 | bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff, | |
113 | 0xffffffff, TRUE), | |
114 | HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
115 | bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff, | |
116 | 0xffffffff, TRUE), | |
ac2aa337 | 117 | HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed, |
b34976b6 AM |
118 | bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff, |
119 | 0xffffffff, FALSE), | |
120 | HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
121 | bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff, | |
122 | 0xffffffff, TRUE), | |
123 | HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
124 | bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff, | |
125 | 0xffffffff, FALSE), | |
d6ab8113 JB |
126 | HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
127 | bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE, | |
128 | TRUE), | |
129 | HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
130 | bfd_elf_generic_reloc, "R_X86_64_GOTOFF64", | |
131 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
132 | HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
133 | bfd_elf_generic_reloc, "R_X86_64_GOTPC32", | |
134 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
7b81dfbb AJ |
135 | HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed, |
136 | bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE, | |
137 | FALSE), | |
138 | HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed, | |
139 | bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE, | |
140 | MINUS_ONE, TRUE), | |
141 | HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed, | |
142 | bfd_elf_generic_reloc, "R_X86_64_GOTPC64", | |
143 | FALSE, MINUS_ONE, MINUS_ONE, TRUE), | |
144 | HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed, | |
145 | bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE, | |
146 | MINUS_ONE, FALSE), | |
147 | HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed, | |
148 | bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE, | |
149 | MINUS_ONE, FALSE), | |
67a4f2b7 AO |
150 | EMPTY_HOWTO (32), |
151 | EMPTY_HOWTO (33), | |
152 | HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0, | |
153 | complain_overflow_bitfield, bfd_elf_generic_reloc, | |
154 | "R_X86_64_GOTPC32_TLSDESC", | |
155 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
156 | HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0, | |
157 | complain_overflow_dont, bfd_elf_generic_reloc, | |
158 | "R_X86_64_TLSDESC_CALL", | |
159 | FALSE, 0, 0, FALSE), | |
160 | HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0, | |
161 | complain_overflow_bitfield, bfd_elf_generic_reloc, | |
162 | "R_X86_64_TLSDESC", | |
163 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
cbe950e9 L |
164 | HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
165 | bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE, | |
166 | MINUS_ONE, FALSE), | |
fe4770f4 | 167 | |
a33d77bc JB |
168 | /* We have a gap in the reloc numbers here. |
169 | R_X86_64_standard counts the number up to this point, and | |
170 | R_X86_64_vt_offset is the value to subtract from a reloc type of | |
171 | R_X86_64_GNU_VT* to form an index into this table. */ | |
cbe950e9 | 172 | #define R_X86_64_standard (R_X86_64_IRELATIVE + 1) |
a33d77bc JB |
173 | #define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard) |
174 | ||
fe4770f4 | 175 | /* GNU extension to record C++ vtable hierarchy. */ |
b34976b6 AM |
176 | HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
177 | NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE), | |
fe4770f4 AJ |
178 | |
179 | /* GNU extension to record C++ vtable member usage. */ | |
b34976b6 AM |
180 | HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
181 | _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0, | |
d7921315 L |
182 | FALSE), |
183 | ||
184 | /* Use complain_overflow_bitfield on R_X86_64_32 for x32. */ | |
185 | HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
186 | bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff, | |
187 | FALSE) | |
8d88c4ca NC |
188 | }; |
189 | ||
d8045f23 NC |
190 | #define IS_X86_64_PCREL_TYPE(TYPE) \ |
191 | ( ((TYPE) == R_X86_64_PC8) \ | |
192 | || ((TYPE) == R_X86_64_PC16) \ | |
193 | || ((TYPE) == R_X86_64_PC32) \ | |
194 | || ((TYPE) == R_X86_64_PC64)) | |
195 | ||
8d88c4ca | 196 | /* Map BFD relocs to the x86_64 elf relocs. */ |
70256ad8 AJ |
197 | struct elf_reloc_map |
198 | { | |
8d88c4ca NC |
199 | bfd_reloc_code_real_type bfd_reloc_val; |
200 | unsigned char elf_reloc_val; | |
201 | }; | |
202 | ||
dc810e39 | 203 | static const struct elf_reloc_map x86_64_reloc_map[] = |
8d88c4ca | 204 | { |
70256ad8 AJ |
205 | { BFD_RELOC_NONE, R_X86_64_NONE, }, |
206 | { BFD_RELOC_64, R_X86_64_64, }, | |
207 | { BFD_RELOC_32_PCREL, R_X86_64_PC32, }, | |
208 | { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,}, | |
209 | { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,}, | |
210 | { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, }, | |
211 | { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, }, | |
212 | { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, }, | |
213 | { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, }, | |
214 | { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, }, | |
215 | { BFD_RELOC_32, R_X86_64_32, }, | |
216 | { BFD_RELOC_X86_64_32S, R_X86_64_32S, }, | |
217 | { BFD_RELOC_16, R_X86_64_16, }, | |
218 | { BFD_RELOC_16_PCREL, R_X86_64_PC16, }, | |
219 | { BFD_RELOC_8, R_X86_64_8, }, | |
220 | { BFD_RELOC_8_PCREL, R_X86_64_PC8, }, | |
bffbf940 JJ |
221 | { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, }, |
222 | { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, }, | |
223 | { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, }, | |
224 | { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, }, | |
225 | { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, }, | |
226 | { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, }, | |
227 | { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, }, | |
228 | { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, }, | |
d6ab8113 JB |
229 | { BFD_RELOC_64_PCREL, R_X86_64_PC64, }, |
230 | { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, }, | |
231 | { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, }, | |
7b81dfbb AJ |
232 | { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, }, |
233 | { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, }, | |
234 | { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, }, | |
235 | { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, }, | |
236 | { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, }, | |
67a4f2b7 AO |
237 | { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, }, |
238 | { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, }, | |
239 | { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, }, | |
cbe950e9 | 240 | { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, }, |
fe4770f4 AJ |
241 | { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, }, |
242 | { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, }, | |
8d88c4ca NC |
243 | }; |
244 | ||
67a4f2b7 | 245 | static reloc_howto_type * |
351f65ca | 246 | elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type) |
67a4f2b7 AO |
247 | { |
248 | unsigned i; | |
249 | ||
d7921315 L |
250 | if (r_type == (unsigned int) R_X86_64_32) |
251 | { | |
252 | if (ABI_64_P (abfd)) | |
253 | i = r_type; | |
254 | else | |
255 | i = ARRAY_SIZE (x86_64_elf_howto_table) - 1; | |
256 | } | |
257 | else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT | |
258 | || r_type >= (unsigned int) R_X86_64_max) | |
67a4f2b7 AO |
259 | { |
260 | if (r_type >= (unsigned int) R_X86_64_standard) | |
261 | { | |
262 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
263 | abfd, (int) r_type); | |
264 | r_type = R_X86_64_NONE; | |
265 | } | |
266 | i = r_type; | |
267 | } | |
268 | else | |
269 | i = r_type - (unsigned int) R_X86_64_vt_offset; | |
270 | BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type); | |
271 | return &x86_64_elf_howto_table[i]; | |
272 | } | |
8d88c4ca NC |
273 | |
274 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
275 | static reloc_howto_type * | |
351f65ca L |
276 | elf_x86_64_reloc_type_lookup (bfd *abfd, |
277 | bfd_reloc_code_real_type code) | |
8d88c4ca NC |
278 | { |
279 | unsigned int i; | |
27482721 | 280 | |
8d88c4ca NC |
281 | for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map); |
282 | i++) | |
283 | { | |
284 | if (x86_64_reloc_map[i].bfd_reloc_val == code) | |
351f65ca L |
285 | return elf_x86_64_rtype_to_howto (abfd, |
286 | x86_64_reloc_map[i].elf_reloc_val); | |
8d88c4ca NC |
287 | } |
288 | return 0; | |
289 | } | |
290 | ||
157090f7 | 291 | static reloc_howto_type * |
d7921315 | 292 | elf_x86_64_reloc_name_lookup (bfd *abfd, |
351f65ca | 293 | const char *r_name) |
157090f7 AM |
294 | { |
295 | unsigned int i; | |
296 | ||
d7921315 L |
297 | if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0) |
298 | { | |
299 | /* Get x32 R_X86_64_32. */ | |
300 | reloc_howto_type *reloc | |
301 | = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1]; | |
302 | BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32); | |
303 | return reloc; | |
304 | } | |
305 | ||
306 | for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++) | |
157090f7 AM |
307 | if (x86_64_elf_howto_table[i].name != NULL |
308 | && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0) | |
309 | return &x86_64_elf_howto_table[i]; | |
310 | ||
311 | return NULL; | |
312 | } | |
313 | ||
8d88c4ca | 314 | /* Given an x86_64 ELF reloc type, fill in an arelent structure. */ |
8da6118f | 315 | |
8d88c4ca | 316 | static void |
351f65ca L |
317 | elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
318 | Elf_Internal_Rela *dst) | |
8d88c4ca | 319 | { |
67a4f2b7 | 320 | unsigned r_type; |
8d88c4ca | 321 | |
351f65ca L |
322 | r_type = ELF32_R_TYPE (dst->r_info); |
323 | cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type); | |
8d88c4ca NC |
324 | BFD_ASSERT (r_type == cache_ptr->howto->type); |
325 | } | |
70256ad8 | 326 | \f |
3bab7989 | 327 | /* Support for core dump NOTE sections. */ |
b34976b6 | 328 | static bfd_boolean |
351f65ca | 329 | elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
330 | { |
331 | int offset; | |
eea6121a | 332 | size_t size; |
3bab7989 ML |
333 | |
334 | switch (note->descsz) | |
335 | { | |
336 | default: | |
b34976b6 | 337 | return FALSE; |
3bab7989 | 338 | |
bcd823f1 L |
339 | case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */ |
340 | /* pr_cursig */ | |
341 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
342 | ||
343 | /* pr_pid */ | |
344 | elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
345 | ||
346 | /* pr_reg */ | |
347 | offset = 72; | |
348 | size = 216; | |
349 | ||
350 | break; | |
351 | ||
3bab7989 ML |
352 | case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */ |
353 | /* pr_cursig */ | |
cedb70c5 | 354 | elf_tdata (abfd)->core_signal |
3bab7989 ML |
355 | = bfd_get_16 (abfd, note->descdata + 12); |
356 | ||
357 | /* pr_pid */ | |
261b8d08 | 358 | elf_tdata (abfd)->core_lwpid |
3bab7989 ML |
359 | = bfd_get_32 (abfd, note->descdata + 32); |
360 | ||
361 | /* pr_reg */ | |
362 | offset = 112; | |
eea6121a | 363 | size = 216; |
3bab7989 ML |
364 | |
365 | break; | |
366 | } | |
367 | ||
368 | /* Make a ".reg/999" section. */ | |
369 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 370 | size, note->descpos + offset); |
3bab7989 ML |
371 | } |
372 | ||
b34976b6 | 373 | static bfd_boolean |
351f65ca | 374 | elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
375 | { |
376 | switch (note->descsz) | |
377 | { | |
378 | default: | |
b34976b6 | 379 | return FALSE; |
3bab7989 | 380 | |
bcd823f1 L |
381 | case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */ |
382 | elf_tdata (abfd)->core_pid | |
383 | = bfd_get_32 (abfd, note->descdata + 12); | |
384 | elf_tdata (abfd)->core_program | |
385 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
386 | elf_tdata (abfd)->core_command | |
387 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
388 | break; | |
389 | ||
3bab7989 | 390 | case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */ |
261b8d08 PA |
391 | elf_tdata (abfd)->core_pid |
392 | = bfd_get_32 (abfd, note->descdata + 24); | |
3bab7989 ML |
393 | elf_tdata (abfd)->core_program |
394 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
395 | elf_tdata (abfd)->core_command | |
396 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
397 | } | |
398 | ||
399 | /* Note that for some reason, a spurious space is tacked | |
400 | onto the end of the args in some (at least one anyway) | |
401 | implementations, so strip it off if it exists. */ | |
402 | ||
403 | { | |
404 | char *command = elf_tdata (abfd)->core_command; | |
405 | int n = strlen (command); | |
406 | ||
407 | if (0 < n && command[n - 1] == ' ') | |
408 | command[n - 1] = '\0'; | |
409 | } | |
410 | ||
b34976b6 | 411 | return TRUE; |
3bab7989 | 412 | } |
8fd79e71 L |
413 | |
414 | #ifdef CORE_HEADER | |
415 | static char * | |
416 | elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
417 | int note_type, ...) | |
418 | { | |
419 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
420 | const void *p; | |
421 | int size; | |
422 | va_list ap; | |
423 | const char *fname, *psargs; | |
424 | long pid; | |
425 | int cursig; | |
426 | const void *gregs; | |
427 | ||
428 | switch (note_type) | |
429 | { | |
430 | default: | |
431 | return NULL; | |
432 | ||
433 | case NT_PRPSINFO: | |
434 | va_start (ap, note_type); | |
435 | fname = va_arg (ap, const char *); | |
436 | psargs = va_arg (ap, const char *); | |
437 | va_end (ap); | |
438 | ||
439 | if (bed->s->elfclass == ELFCLASS32) | |
440 | { | |
441 | prpsinfo32_t data; | |
442 | memset (&data, 0, sizeof (data)); | |
443 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
444 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
445 | p = (const void *) &data; | |
446 | size = sizeof (data); | |
447 | } | |
448 | else | |
449 | { | |
450 | prpsinfo_t data; | |
451 | memset (&data, 0, sizeof (data)); | |
452 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
453 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
454 | p = (const void *) &data; | |
455 | size = sizeof (data); | |
456 | } | |
457 | break; | |
458 | ||
459 | case NT_PRSTATUS: | |
460 | va_start (ap, note_type); | |
461 | pid = va_arg (ap, long); | |
462 | cursig = va_arg (ap, int); | |
463 | gregs = va_arg (ap, const void *); | |
464 | va_end (ap); | |
465 | ||
466 | if (bed->s->elfclass == ELFCLASS32) | |
467 | { | |
468 | if (bed->elf_machine_code == EM_X86_64) | |
469 | { | |
470 | prstatusx32_t prstat; | |
471 | memset (&prstat, 0, sizeof (prstat)); | |
472 | prstat.pr_pid = pid; | |
473 | prstat.pr_cursig = cursig; | |
474 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
475 | p = (const void *) &prstat; | |
476 | size = sizeof (prstat); | |
477 | } | |
478 | else | |
479 | { | |
480 | prstatus32_t prstat; | |
481 | memset (&prstat, 0, sizeof (prstat)); | |
482 | prstat.pr_pid = pid; | |
483 | prstat.pr_cursig = cursig; | |
484 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
485 | p = (const void *) &prstat; | |
486 | size = sizeof (prstat); | |
487 | } | |
488 | } | |
489 | else | |
490 | { | |
491 | prstatus_t prstat; | |
492 | memset (&prstat, 0, sizeof (prstat)); | |
493 | prstat.pr_pid = pid; | |
494 | prstat.pr_cursig = cursig; | |
495 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
496 | p = (const void *) &prstat; | |
497 | size = sizeof (prstat); | |
498 | } | |
499 | break; | |
500 | } | |
501 | ||
502 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, p, | |
503 | size); | |
504 | } | |
505 | #endif | |
3bab7989 | 506 | \f |
407443a3 | 507 | /* Functions for the x86-64 ELF linker. */ |
70256ad8 | 508 | |
407443a3 | 509 | /* The name of the dynamic interpreter. This is put in the .interp |
70256ad8 AJ |
510 | section. */ |
511 | ||
351f65ca L |
512 | #define ELF64_DYNAMIC_INTERPRETER "/lib/ld64.so.1" |
513 | #define ELF32_DYNAMIC_INTERPRETER "/lib/ld32.so.1" | |
70256ad8 | 514 | |
d40d037c AJ |
515 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
516 | copying dynamic variables from a shared lib into an app's dynbss | |
517 | section, and instead use a dynamic relocation to point into the | |
518 | shared lib. */ | |
519 | #define ELIMINATE_COPY_RELOCS 1 | |
520 | ||
70256ad8 AJ |
521 | /* The size in bytes of an entry in the global offset table. */ |
522 | ||
523 | #define GOT_ENTRY_SIZE 8 | |
8d88c4ca | 524 | |
70256ad8 | 525 | /* The size in bytes of an entry in the procedure linkage table. */ |
8d88c4ca | 526 | |
70256ad8 AJ |
527 | #define PLT_ENTRY_SIZE 16 |
528 | ||
529 | /* The first entry in a procedure linkage table looks like this. See the | |
530 | SVR4 ABI i386 supplement and the x86-64 ABI to see how this works. */ | |
531 | ||
351f65ca | 532 | static const bfd_byte elf_x86_64_plt0_entry[PLT_ENTRY_SIZE] = |
70256ad8 | 533 | { |
653165cc AJ |
534 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ |
535 | 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */ | |
10efb593 | 536 | 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */ |
70256ad8 AJ |
537 | }; |
538 | ||
539 | /* Subsequent entries in a procedure linkage table look like this. */ | |
540 | ||
351f65ca | 541 | static const bfd_byte elf_x86_64_plt_entry[PLT_ENTRY_SIZE] = |
70256ad8 | 542 | { |
653165cc | 543 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ |
407443a3 | 544 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ |
653165cc | 545 | 0x68, /* pushq immediate */ |
70256ad8 AJ |
546 | 0, 0, 0, 0, /* replaced with index into relocation table. */ |
547 | 0xe9, /* jmp relative */ | |
548 | 0, 0, 0, 0 /* replaced with offset to start of .plt0. */ | |
549 | }; | |
550 | ||
e41b3a13 JJ |
551 | /* .eh_frame covering the .plt section. */ |
552 | ||
553 | static const bfd_byte elf_x86_64_eh_frame_plt[] = | |
554 | { | |
555 | #define PLT_CIE_LENGTH 20 | |
556 | #define PLT_FDE_LENGTH 36 | |
557 | #define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8 | |
558 | #define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12 | |
559 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
560 | 0, 0, 0, 0, /* CIE ID */ | |
561 | 1, /* CIE version */ | |
562 | 'z', 'R', 0, /* Augmentation string */ | |
563 | 1, /* Code alignment factor */ | |
564 | 0x78, /* Data alignment factor */ | |
565 | 16, /* Return address column */ | |
566 | 1, /* Augmentation size */ | |
567 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
568 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
569 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
570 | DW_CFA_nop, DW_CFA_nop, | |
571 | ||
572 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
573 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
574 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
575 | 0, 0, 0, 0, /* .plt size goes here */ | |
576 | 0, /* Augmentation size */ | |
577 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
578 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
579 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
580 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
581 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
582 | 11, /* Block length */ | |
583 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
584 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
585 | DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge, | |
586 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
587 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
588 | }; | |
589 | ||
70256ad8 AJ |
590 | /* x86-64 ELF linker hash entry. */ |
591 | ||
351f65ca | 592 | struct elf_x86_64_link_hash_entry |
70256ad8 | 593 | { |
c434dee6 | 594 | struct elf_link_hash_entry elf; |
70256ad8 | 595 | |
c434dee6 | 596 | /* Track dynamic relocs copied for this symbol. */ |
e03a8ed8 | 597 | struct elf_dyn_relocs *dyn_relocs; |
bffbf940 JJ |
598 | |
599 | #define GOT_UNKNOWN 0 | |
600 | #define GOT_NORMAL 1 | |
601 | #define GOT_TLS_GD 2 | |
602 | #define GOT_TLS_IE 3 | |
67a4f2b7 AO |
603 | #define GOT_TLS_GDESC 4 |
604 | #define GOT_TLS_GD_BOTH_P(type) \ | |
605 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
606 | #define GOT_TLS_GD_P(type) \ | |
607 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
608 | #define GOT_TLS_GDESC_P(type) \ | |
609 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
610 | #define GOT_TLS_GD_ANY_P(type) \ | |
611 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
bffbf940 | 612 | unsigned char tls_type; |
67a4f2b7 AO |
613 | |
614 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, | |
615 | starting at the end of the jump table. */ | |
616 | bfd_vma tlsdesc_got; | |
bffbf940 JJ |
617 | }; |
618 | ||
351f65ca L |
619 | #define elf_x86_64_hash_entry(ent) \ |
620 | ((struct elf_x86_64_link_hash_entry *)(ent)) | |
bffbf940 | 621 | |
351f65ca | 622 | struct elf_x86_64_obj_tdata |
bffbf940 JJ |
623 | { |
624 | struct elf_obj_tdata root; | |
625 | ||
626 | /* tls_type for each local got entry. */ | |
627 | char *local_got_tls_type; | |
67a4f2b7 AO |
628 | |
629 | /* GOTPLT entries for TLS descriptors. */ | |
630 | bfd_vma *local_tlsdesc_gotent; | |
70256ad8 AJ |
631 | }; |
632 | ||
351f65ca L |
633 | #define elf_x86_64_tdata(abfd) \ |
634 | ((struct elf_x86_64_obj_tdata *) (abfd)->tdata.any) | |
bffbf940 | 635 | |
351f65ca L |
636 | #define elf_x86_64_local_got_tls_type(abfd) \ |
637 | (elf_x86_64_tdata (abfd)->local_got_tls_type) | |
bffbf940 | 638 | |
351f65ca L |
639 | #define elf_x86_64_local_tlsdesc_gotent(abfd) \ |
640 | (elf_x86_64_tdata (abfd)->local_tlsdesc_gotent) | |
bffbf940 | 641 | |
0ffa91dd NC |
642 | #define is_x86_64_elf(bfd) \ |
643 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
644 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 645 | && elf_object_id (bfd) == X86_64_ELF_DATA) |
0ffa91dd NC |
646 | |
647 | static bfd_boolean | |
351f65ca | 648 | elf_x86_64_mkobject (bfd *abfd) |
0ffa91dd | 649 | { |
351f65ca | 650 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_x86_64_obj_tdata), |
4dfe6ac6 | 651 | X86_64_ELF_DATA); |
0ffa91dd NC |
652 | } |
653 | ||
c434dee6 | 654 | /* x86-64 ELF linker hash table. */ |
8d88c4ca | 655 | |
351f65ca | 656 | struct elf_x86_64_link_hash_table |
407443a3 | 657 | { |
c434dee6 | 658 | struct elf_link_hash_table elf; |
70256ad8 | 659 | |
c434dee6 | 660 | /* Short-cuts to get to dynamic linker sections. */ |
c434dee6 AJ |
661 | asection *sdynbss; |
662 | asection *srelbss; | |
e41b3a13 | 663 | asection *plt_eh_frame; |
70256ad8 | 664 | |
4dfe6ac6 NC |
665 | union |
666 | { | |
bffbf940 JJ |
667 | bfd_signed_vma refcount; |
668 | bfd_vma offset; | |
669 | } tls_ld_got; | |
670 | ||
67a4f2b7 AO |
671 | /* The amount of space used by the jump slots in the GOT. */ |
672 | bfd_vma sgotplt_jump_table_size; | |
673 | ||
87d72d41 AM |
674 | /* Small local sym cache. */ |
675 | struct sym_cache sym_cache; | |
9f03412a | 676 | |
351f65ca L |
677 | bfd_vma (*r_info) (bfd_vma, bfd_vma); |
678 | bfd_vma (*r_sym) (bfd_vma); | |
248775ba | 679 | unsigned int pointer_r_type; |
351f65ca L |
680 | const char *dynamic_interpreter; |
681 | int dynamic_interpreter_size; | |
682 | ||
9f03412a AO |
683 | /* _TLS_MODULE_BASE_ symbol. */ |
684 | struct bfd_link_hash_entry *tls_module_base; | |
c25bc9fc L |
685 | |
686 | /* Used by local STT_GNU_IFUNC symbols. */ | |
687 | htab_t loc_hash_table; | |
4dfe6ac6 NC |
688 | void * loc_hash_memory; |
689 | ||
690 | /* The offset into splt of the PLT entry for the TLS descriptor | |
691 | resolver. Special values are 0, if not necessary (or not found | |
692 | to be necessary yet), and -1 if needed but not determined | |
693 | yet. */ | |
694 | bfd_vma tlsdesc_plt; | |
695 | /* The offset into sgot of the GOT entry used by the PLT entry | |
696 | above. */ | |
697 | bfd_vma tlsdesc_got; | |
c434dee6 | 698 | }; |
70256ad8 AJ |
699 | |
700 | /* Get the x86-64 ELF linker hash table from a link_info structure. */ | |
8d88c4ca | 701 | |
351f65ca | 702 | #define elf_x86_64_hash_table(p) \ |
4dfe6ac6 | 703 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
351f65ca | 704 | == X86_64_ELF_DATA ? ((struct elf_x86_64_link_hash_table *) ((p)->hash)) : NULL) |
8d88c4ca | 705 | |
351f65ca | 706 | #define elf_x86_64_compute_jump_table_size(htab) \ |
6de2ae4a | 707 | ((htab)->elf.srelplt->reloc_count * GOT_ENTRY_SIZE) |
67a4f2b7 | 708 | |
407443a3 | 709 | /* Create an entry in an x86-64 ELF linker hash table. */ |
70256ad8 AJ |
710 | |
711 | static struct bfd_hash_entry * | |
351f65ca L |
712 | elf_x86_64_link_hash_newfunc (struct bfd_hash_entry *entry, |
713 | struct bfd_hash_table *table, | |
714 | const char *string) | |
70256ad8 | 715 | { |
70256ad8 | 716 | /* Allocate the structure if it has not already been allocated by a |
c434dee6 AJ |
717 | subclass. */ |
718 | if (entry == NULL) | |
719 | { | |
a50b1753 NC |
720 | entry = (struct bfd_hash_entry *) |
721 | bfd_hash_allocate (table, | |
351f65ca | 722 | sizeof (struct elf_x86_64_link_hash_entry)); |
c434dee6 AJ |
723 | if (entry == NULL) |
724 | return entry; | |
725 | } | |
70256ad8 AJ |
726 | |
727 | /* Call the allocation method of the superclass. */ | |
c434dee6 AJ |
728 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
729 | if (entry != NULL) | |
70256ad8 | 730 | { |
351f65ca | 731 | struct elf_x86_64_link_hash_entry *eh; |
c434dee6 | 732 | |
351f65ca | 733 | eh = (struct elf_x86_64_link_hash_entry *) entry; |
c434dee6 | 734 | eh->dyn_relocs = NULL; |
bffbf940 | 735 | eh->tls_type = GOT_UNKNOWN; |
67a4f2b7 | 736 | eh->tlsdesc_got = (bfd_vma) -1; |
70256ad8 AJ |
737 | } |
738 | ||
c434dee6 | 739 | return entry; |
70256ad8 AJ |
740 | } |
741 | ||
c25bc9fc L |
742 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
743 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
744 | as global symbol. We reuse indx and dynstr_index for local symbol | |
745 | hash since they aren't used by global symbols in this backend. */ | |
746 | ||
747 | static hashval_t | |
351f65ca | 748 | elf_x86_64_local_htab_hash (const void *ptr) |
c25bc9fc L |
749 | { |
750 | struct elf_link_hash_entry *h | |
751 | = (struct elf_link_hash_entry *) ptr; | |
d2149d72 | 752 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); |
c25bc9fc L |
753 | } |
754 | ||
755 | /* Compare local hash entries. */ | |
756 | ||
757 | static int | |
351f65ca | 758 | elf_x86_64_local_htab_eq (const void *ptr1, const void *ptr2) |
c25bc9fc L |
759 | { |
760 | struct elf_link_hash_entry *h1 | |
761 | = (struct elf_link_hash_entry *) ptr1; | |
762 | struct elf_link_hash_entry *h2 | |
763 | = (struct elf_link_hash_entry *) ptr2; | |
764 | ||
765 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
766 | } | |
767 | ||
768 | /* Find and/or create a hash entry for local symbol. */ | |
769 | ||
770 | static struct elf_link_hash_entry * | |
351f65ca L |
771 | elf_x86_64_get_local_sym_hash (struct elf_x86_64_link_hash_table *htab, |
772 | bfd *abfd, const Elf_Internal_Rela *rel, | |
773 | bfd_boolean create) | |
c25bc9fc | 774 | { |
351f65ca | 775 | struct elf_x86_64_link_hash_entry e, *ret; |
c25bc9fc | 776 | asection *sec = abfd->sections; |
d2149d72 | 777 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, |
351f65ca | 778 | htab->r_sym (rel->r_info)); |
c25bc9fc L |
779 | void **slot; |
780 | ||
781 | e.elf.indx = sec->id; | |
351f65ca | 782 | e.elf.dynstr_index = htab->r_sym (rel->r_info); |
c25bc9fc L |
783 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, |
784 | create ? INSERT : NO_INSERT); | |
785 | ||
786 | if (!slot) | |
787 | return NULL; | |
788 | ||
789 | if (*slot) | |
790 | { | |
351f65ca | 791 | ret = (struct elf_x86_64_link_hash_entry *) *slot; |
c25bc9fc L |
792 | return &ret->elf; |
793 | } | |
794 | ||
351f65ca | 795 | ret = (struct elf_x86_64_link_hash_entry *) |
c25bc9fc | 796 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, |
351f65ca | 797 | sizeof (struct elf_x86_64_link_hash_entry)); |
c25bc9fc L |
798 | if (ret) |
799 | { | |
800 | memset (ret, 0, sizeof (*ret)); | |
801 | ret->elf.indx = sec->id; | |
351f65ca | 802 | ret->elf.dynstr_index = htab->r_sym (rel->r_info); |
c25bc9fc | 803 | ret->elf.dynindx = -1; |
c25bc9fc L |
804 | *slot = ret; |
805 | } | |
806 | return &ret->elf; | |
807 | } | |
808 | ||
8d88c4ca NC |
809 | /* Create an X86-64 ELF linker hash table. */ |
810 | ||
811 | static struct bfd_link_hash_table * | |
351f65ca | 812 | elf_x86_64_link_hash_table_create (bfd *abfd) |
8d88c4ca | 813 | { |
351f65ca L |
814 | struct elf_x86_64_link_hash_table *ret; |
815 | bfd_size_type amt = sizeof (struct elf_x86_64_link_hash_table); | |
8d88c4ca | 816 | |
351f65ca | 817 | ret = (struct elf_x86_64_link_hash_table *) bfd_malloc (amt); |
c434dee6 | 818 | if (ret == NULL) |
8d88c4ca NC |
819 | return NULL; |
820 | ||
eb4ff4d6 | 821 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
351f65ca L |
822 | elf_x86_64_link_hash_newfunc, |
823 | sizeof (struct elf_x86_64_link_hash_entry), | |
4dfe6ac6 | 824 | X86_64_ELF_DATA)) |
8d88c4ca | 825 | { |
e2d34d7d | 826 | free (ret); |
8d88c4ca NC |
827 | return NULL; |
828 | } | |
829 | ||
c434dee6 AJ |
830 | ret->sdynbss = NULL; |
831 | ret->srelbss = NULL; | |
332ce62b | 832 | ret->plt_eh_frame = NULL; |
87d72d41 | 833 | ret->sym_cache.abfd = NULL; |
67a4f2b7 AO |
834 | ret->tlsdesc_plt = 0; |
835 | ret->tlsdesc_got = 0; | |
bffbf940 | 836 | ret->tls_ld_got.refcount = 0; |
67a4f2b7 | 837 | ret->sgotplt_jump_table_size = 0; |
9f03412a | 838 | ret->tls_module_base = NULL; |
6bbec505 | 839 | |
351f65ca L |
840 | if (ABI_64_P (abfd)) |
841 | { | |
842 | ret->r_info = elf64_r_info; | |
843 | ret->r_sym = elf64_r_sym; | |
248775ba | 844 | ret->pointer_r_type = R_X86_64_64; |
351f65ca L |
845 | ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; |
846 | ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER; | |
847 | } | |
848 | else | |
849 | { | |
850 | ret->r_info = elf32_r_info; | |
851 | ret->r_sym = elf32_r_sym; | |
248775ba | 852 | ret->pointer_r_type = R_X86_64_32; |
351f65ca L |
853 | ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; |
854 | ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER; | |
855 | } | |
856 | ||
c25bc9fc | 857 | ret->loc_hash_table = htab_try_create (1024, |
351f65ca L |
858 | elf_x86_64_local_htab_hash, |
859 | elf_x86_64_local_htab_eq, | |
c25bc9fc L |
860 | NULL); |
861 | ret->loc_hash_memory = objalloc_create (); | |
862 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
863 | { | |
864 | free (ret); | |
865 | return NULL; | |
866 | } | |
867 | ||
c434dee6 AJ |
868 | return &ret->elf.root; |
869 | } | |
870 | ||
c25bc9fc L |
871 | /* Destroy an X86-64 ELF linker hash table. */ |
872 | ||
873 | static void | |
351f65ca | 874 | elf_x86_64_link_hash_table_free (struct bfd_link_hash_table *hash) |
c25bc9fc | 875 | { |
351f65ca L |
876 | struct elf_x86_64_link_hash_table *htab |
877 | = (struct elf_x86_64_link_hash_table *) hash; | |
c25bc9fc L |
878 | |
879 | if (htab->loc_hash_table) | |
880 | htab_delete (htab->loc_hash_table); | |
881 | if (htab->loc_hash_memory) | |
882 | objalloc_free ((struct objalloc *) htab->loc_hash_memory); | |
883 | _bfd_generic_link_hash_table_free (hash); | |
884 | } | |
885 | ||
c434dee6 AJ |
886 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and |
887 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
888 | hash table. */ | |
889 | ||
b34976b6 | 890 | static bfd_boolean |
351f65ca L |
891 | elf_x86_64_create_dynamic_sections (bfd *dynobj, |
892 | struct bfd_link_info *info) | |
c434dee6 | 893 | { |
351f65ca | 894 | struct elf_x86_64_link_hash_table *htab; |
c434dee6 | 895 | |
c434dee6 | 896 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 897 | return FALSE; |
c434dee6 | 898 | |
351f65ca | 899 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
900 | if (htab == NULL) |
901 | return FALSE; | |
902 | ||
c434dee6 AJ |
903 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
904 | if (!info->shared) | |
905 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
906 | ||
6de2ae4a | 907 | if (!htab->sdynbss |
c434dee6 AJ |
908 | || (!info->shared && !htab->srelbss)) |
909 | abort (); | |
910 | ||
e41b3a13 JJ |
911 | if (!info->no_ld_generated_unwind_info |
912 | && bfd_get_section_by_name (dynobj, ".eh_frame") == NULL | |
913 | && htab->elf.splt != NULL) | |
914 | { | |
915 | flagword flags = get_elf_backend_data (dynobj)->dynamic_sec_flags; | |
916 | htab->plt_eh_frame | |
917 | = bfd_make_section_with_flags (dynobj, ".eh_frame", | |
918 | flags | SEC_READONLY); | |
919 | if (htab->plt_eh_frame == NULL | |
920 | || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 3)) | |
921 | return FALSE; | |
922 | ||
923 | htab->plt_eh_frame->size = sizeof (elf_x86_64_eh_frame_plt); | |
924 | htab->plt_eh_frame->contents | |
925 | = bfd_alloc (dynobj, htab->plt_eh_frame->size); | |
926 | memcpy (htab->plt_eh_frame->contents, elf_x86_64_eh_frame_plt, | |
927 | sizeof (elf_x86_64_eh_frame_plt)); | |
928 | } | |
b34976b6 | 929 | return TRUE; |
c434dee6 AJ |
930 | } |
931 | ||
932 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
933 | ||
934 | static void | |
351f65ca L |
935 | elf_x86_64_copy_indirect_symbol (struct bfd_link_info *info, |
936 | struct elf_link_hash_entry *dir, | |
937 | struct elf_link_hash_entry *ind) | |
c434dee6 | 938 | { |
351f65ca | 939 | struct elf_x86_64_link_hash_entry *edir, *eind; |
c434dee6 | 940 | |
351f65ca L |
941 | edir = (struct elf_x86_64_link_hash_entry *) dir; |
942 | eind = (struct elf_x86_64_link_hash_entry *) ind; | |
c434dee6 AJ |
943 | |
944 | if (eind->dyn_relocs != NULL) | |
945 | { | |
946 | if (edir->dyn_relocs != NULL) | |
947 | { | |
e03a8ed8 L |
948 | struct elf_dyn_relocs **pp; |
949 | struct elf_dyn_relocs *p; | |
c434dee6 | 950 | |
fcfa13d2 | 951 | /* Add reloc counts against the indirect sym to the direct sym |
c434dee6 AJ |
952 | list. Merge any entries against the same section. */ |
953 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
954 | { | |
e03a8ed8 | 955 | struct elf_dyn_relocs *q; |
c434dee6 AJ |
956 | |
957 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
958 | if (q->sec == p->sec) | |
959 | { | |
960 | q->pc_count += p->pc_count; | |
961 | q->count += p->count; | |
962 | *pp = p->next; | |
963 | break; | |
964 | } | |
965 | if (q == NULL) | |
966 | pp = &p->next; | |
967 | } | |
968 | *pp = edir->dyn_relocs; | |
969 | } | |
970 | ||
971 | edir->dyn_relocs = eind->dyn_relocs; | |
972 | eind->dyn_relocs = NULL; | |
973 | } | |
974 | ||
bffbf940 JJ |
975 | if (ind->root.type == bfd_link_hash_indirect |
976 | && dir->got.refcount <= 0) | |
977 | { | |
978 | edir->tls_type = eind->tls_type; | |
979 | eind->tls_type = GOT_UNKNOWN; | |
980 | } | |
981 | ||
d40d037c AJ |
982 | if (ELIMINATE_COPY_RELOCS |
983 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
984 | && dir->dynamic_adjusted) |
985 | { | |
986 | /* If called to transfer flags for a weakdef during processing | |
987 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
988 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
989 | dir->ref_dynamic |= ind->ref_dynamic; | |
990 | dir->ref_regular |= ind->ref_regular; | |
991 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
992 | dir->needs_plt |= ind->needs_plt; | |
993 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
994 | } | |
d40d037c | 995 | else |
fcfa13d2 | 996 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
8d88c4ca NC |
997 | } |
998 | ||
b34976b6 | 999 | static bfd_boolean |
27482721 | 1000 | elf64_x86_64_elf_object_p (bfd *abfd) |
bffbf940 | 1001 | { |
8d88c4ca NC |
1002 | /* Set the right machine number for an x86-64 elf64 file. */ |
1003 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); | |
b34976b6 | 1004 | return TRUE; |
8d88c4ca NC |
1005 | } |
1006 | ||
142411ca L |
1007 | typedef union |
1008 | { | |
1009 | unsigned char c[2]; | |
1010 | uint16_t i; | |
1011 | } | |
1012 | x86_64_opcode16; | |
1013 | ||
1014 | typedef union | |
1015 | { | |
1016 | unsigned char c[4]; | |
1017 | uint32_t i; | |
1018 | } | |
1019 | x86_64_opcode32; | |
1020 | ||
1021 | /* Return TRUE if the TLS access code sequence support transition | |
1022 | from R_TYPE. */ | |
1023 | ||
1024 | static bfd_boolean | |
351f65ca L |
1025 | elf_x86_64_check_tls_transition (bfd *abfd, |
1026 | struct bfd_link_info *info, | |
1027 | asection *sec, | |
1028 | bfd_byte *contents, | |
1029 | Elf_Internal_Shdr *symtab_hdr, | |
1030 | struct elf_link_hash_entry **sym_hashes, | |
1031 | unsigned int r_type, | |
1032 | const Elf_Internal_Rela *rel, | |
1033 | const Elf_Internal_Rela *relend) | |
bffbf940 | 1034 | { |
142411ca L |
1035 | unsigned int val; |
1036 | unsigned long r_symndx; | |
1037 | struct elf_link_hash_entry *h; | |
1038 | bfd_vma offset; | |
351f65ca | 1039 | struct elf_x86_64_link_hash_table *htab; |
142411ca L |
1040 | |
1041 | /* Get the section contents. */ | |
1042 | if (contents == NULL) | |
1043 | { | |
1044 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1045 | contents = elf_section_data (sec)->this_hdr.contents; | |
1046 | else | |
1047 | { | |
1048 | /* FIXME: How to better handle error condition? */ | |
1049 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1050 | return FALSE; | |
bffbf940 | 1051 | |
142411ca L |
1052 | /* Cache the section contents for elf_link_input_bfd. */ |
1053 | elf_section_data (sec)->this_hdr.contents = contents; | |
1054 | } | |
1055 | } | |
1056 | ||
351f65ca | 1057 | htab = elf_x86_64_hash_table (info); |
142411ca | 1058 | offset = rel->r_offset; |
bffbf940 | 1059 | switch (r_type) |
142411ca L |
1060 | { |
1061 | case R_X86_64_TLSGD: | |
1062 | case R_X86_64_TLSLD: | |
1063 | if ((rel + 1) >= relend) | |
1064 | return FALSE; | |
1065 | ||
1066 | if (r_type == R_X86_64_TLSGD) | |
1067 | { | |
52bc799a | 1068 | /* Check transition from GD access model. For 64bit, only |
142411ca L |
1069 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
1070 | .word 0x6666; rex64; call __tls_get_addr | |
52bc799a L |
1071 | can transit to different access model. For 32bit, only |
1072 | leaq foo@tlsgd(%rip), %rdi | |
1073 | .word 0x6666; rex64; call __tls_get_addr | |
142411ca L |
1074 | can transit to different access model. */ |
1075 | ||
52bc799a L |
1076 | static x86_64_opcode32 call = { { 0x66, 0x66, 0x48, 0xe8 } }; |
1077 | if ((offset + 12) > sec->size | |
142411ca L |
1078 | || bfd_get_32 (abfd, contents + offset + 4) != call.i) |
1079 | return FALSE; | |
52bc799a L |
1080 | |
1081 | if (ABI_64_P (abfd)) | |
1082 | { | |
1083 | static x86_64_opcode32 leaq = { { 0x66, 0x48, 0x8d, 0x3d } }; | |
1084 | if (offset < 4 | |
1085 | || bfd_get_32 (abfd, contents + offset - 4) != leaq.i) | |
1086 | return FALSE; | |
1087 | } | |
1088 | else | |
1089 | { | |
1090 | static x86_64_opcode16 lea = { { 0x8d, 0x3d } }; | |
1091 | if (offset < 3 | |
1092 | || bfd_get_8 (abfd, contents + offset - 3) != 0x48 | |
1093 | || bfd_get_16 (abfd, contents + offset - 2) != lea.i) | |
1094 | return FALSE; | |
1095 | } | |
142411ca L |
1096 | } |
1097 | else | |
1098 | { | |
1099 | /* Check transition from LD access model. Only | |
1100 | leaq foo@tlsld(%rip), %rdi; | |
1101 | call __tls_get_addr | |
1102 | can transit to different access model. */ | |
1103 | ||
1104 | static x86_64_opcode32 ld = { { 0x48, 0x8d, 0x3d, 0xe8 } }; | |
1105 | x86_64_opcode32 op; | |
1106 | ||
1107 | if (offset < 3 || (offset + 9) > sec->size) | |
1108 | return FALSE; | |
1109 | ||
1110 | op.i = bfd_get_32 (abfd, contents + offset - 3); | |
1111 | op.c[3] = bfd_get_8 (abfd, contents + offset + 4); | |
1112 | if (op.i != ld.i) | |
1113 | return FALSE; | |
1114 | } | |
1115 | ||
351f65ca | 1116 | r_symndx = htab->r_sym (rel[1].r_info); |
142411ca L |
1117 | if (r_symndx < symtab_hdr->sh_info) |
1118 | return FALSE; | |
1119 | ||
1120 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
c4fb387b L |
1121 | /* Use strncmp to check __tls_get_addr since __tls_get_addr |
1122 | may be versioned. */ | |
142411ca L |
1123 | return (h != NULL |
1124 | && h->root.root.string != NULL | |
351f65ca L |
1125 | && (ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PC32 |
1126 | || ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLT32) | |
c4fb387b L |
1127 | && (strncmp (h->root.root.string, |
1128 | "__tls_get_addr", 14) == 0)); | |
142411ca L |
1129 | |
1130 | case R_X86_64_GOTTPOFF: | |
1131 | /* Check transition from IE access model: | |
4a4c5f25 L |
1132 | mov foo@gottpoff(%rip), %reg |
1133 | add foo@gottpoff(%rip), %reg | |
142411ca L |
1134 | */ |
1135 | ||
4a4c5f25 L |
1136 | /* Check REX prefix first. */ |
1137 | if (offset >= 3 && (offset + 4) <= sec->size) | |
1138 | { | |
1139 | val = bfd_get_8 (abfd, contents + offset - 3); | |
1140 | if (val != 0x48 && val != 0x4c) | |
1141 | { | |
1142 | /* X32 may have 0x44 REX prefix or no REX prefix. */ | |
1143 | if (ABI_64_P (abfd)) | |
1144 | return FALSE; | |
1145 | } | |
1146 | } | |
1147 | else | |
1148 | { | |
1149 | /* X32 may not have any REX prefix. */ | |
1150 | if (ABI_64_P (abfd)) | |
1151 | return FALSE; | |
1152 | if (offset < 2 || (offset + 3) > sec->size) | |
1153 | return FALSE; | |
1154 | } | |
142411ca L |
1155 | |
1156 | val = bfd_get_8 (abfd, contents + offset - 2); | |
1157 | if (val != 0x8b && val != 0x03) | |
1158 | return FALSE; | |
1159 | ||
1160 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1161 | return (val & 0xc7) == 5; | |
1162 | ||
1163 | case R_X86_64_GOTPC32_TLSDESC: | |
1164 | /* Check transition from GDesc access model: | |
1165 | leaq x@tlsdesc(%rip), %rax | |
1166 | ||
1167 | Make sure it's a leaq adding rip to a 32-bit offset | |
1168 | into any register, although it's probably almost always | |
1169 | going to be rax. */ | |
1170 | ||
1171 | if (offset < 3 || (offset + 4) > sec->size) | |
1172 | return FALSE; | |
1173 | ||
1174 | val = bfd_get_8 (abfd, contents + offset - 3); | |
1175 | if ((val & 0xfb) != 0x48) | |
1176 | return FALSE; | |
1177 | ||
1178 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1179 | return FALSE; | |
1180 | ||
1181 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1182 | return (val & 0xc7) == 0x05; | |
1183 | ||
1184 | case R_X86_64_TLSDESC_CALL: | |
1185 | /* Check transition from GDesc access model: | |
1186 | call *x@tlsdesc(%rax) | |
1187 | */ | |
1188 | if (offset + 2 <= sec->size) | |
1189 | { | |
1190 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
1191 | static x86_64_opcode16 call = { { 0xff, 0x10 } }; | |
1192 | return bfd_get_16 (abfd, contents + offset) == call.i; | |
1193 | } | |
1194 | ||
1195 | return FALSE; | |
1196 | ||
1197 | default: | |
1198 | abort (); | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | /* Return TRUE if the TLS access transition is OK or no transition | |
1203 | will be performed. Update R_TYPE if there is a transition. */ | |
1204 | ||
1205 | static bfd_boolean | |
351f65ca L |
1206 | elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd, |
1207 | asection *sec, bfd_byte *contents, | |
1208 | Elf_Internal_Shdr *symtab_hdr, | |
1209 | struct elf_link_hash_entry **sym_hashes, | |
1210 | unsigned int *r_type, int tls_type, | |
1211 | const Elf_Internal_Rela *rel, | |
1212 | const Elf_Internal_Rela *relend, | |
1213 | struct elf_link_hash_entry *h, | |
1214 | unsigned long r_symndx) | |
142411ca L |
1215 | { |
1216 | unsigned int from_type = *r_type; | |
1217 | unsigned int to_type = from_type; | |
1218 | bfd_boolean check = TRUE; | |
1219 | ||
bb1cb422 L |
1220 | /* Skip TLS transition for functions. */ |
1221 | if (h != NULL | |
1222 | && (h->type == STT_FUNC | |
1223 | || h->type == STT_GNU_IFUNC)) | |
1224 | return TRUE; | |
1225 | ||
142411ca | 1226 | switch (from_type) |
bffbf940 JJ |
1227 | { |
1228 | case R_X86_64_TLSGD: | |
67a4f2b7 AO |
1229 | case R_X86_64_GOTPC32_TLSDESC: |
1230 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 1231 | case R_X86_64_GOTTPOFF: |
1d85728f | 1232 | if (info->executable) |
142411ca L |
1233 | { |
1234 | if (h == NULL) | |
1235 | to_type = R_X86_64_TPOFF32; | |
1236 | else | |
1237 | to_type = R_X86_64_GOTTPOFF; | |
1238 | } | |
1239 | ||
351f65ca | 1240 | /* When we are called from elf_x86_64_relocate_section, |
142411ca L |
1241 | CONTENTS isn't NULL and there may be additional transitions |
1242 | based on TLS_TYPE. */ | |
1243 | if (contents != NULL) | |
1244 | { | |
1245 | unsigned int new_to_type = to_type; | |
1246 | ||
1d85728f | 1247 | if (info->executable |
142411ca L |
1248 | && h != NULL |
1249 | && h->dynindx == -1 | |
1250 | && tls_type == GOT_TLS_IE) | |
1251 | new_to_type = R_X86_64_TPOFF32; | |
1252 | ||
1253 | if (to_type == R_X86_64_TLSGD | |
1254 | || to_type == R_X86_64_GOTPC32_TLSDESC | |
1255 | || to_type == R_X86_64_TLSDESC_CALL) | |
1256 | { | |
1257 | if (tls_type == GOT_TLS_IE) | |
1258 | new_to_type = R_X86_64_GOTTPOFF; | |
1259 | } | |
1260 | ||
1261 | /* We checked the transition before when we were called from | |
351f65ca | 1262 | elf_x86_64_check_relocs. We only want to check the new |
142411ca L |
1263 | transition which hasn't been checked before. */ |
1264 | check = new_to_type != to_type && from_type == to_type; | |
1265 | to_type = new_to_type; | |
1266 | } | |
1267 | ||
1268 | break; | |
1269 | ||
bffbf940 | 1270 | case R_X86_64_TLSLD: |
1d85728f | 1271 | if (info->executable) |
142411ca L |
1272 | to_type = R_X86_64_TPOFF32; |
1273 | break; | |
1274 | ||
1275 | default: | |
1276 | return TRUE; | |
bffbf940 JJ |
1277 | } |
1278 | ||
142411ca L |
1279 | /* Return TRUE if there is no transition. */ |
1280 | if (from_type == to_type) | |
1281 | return TRUE; | |
1282 | ||
1283 | /* Check if the transition can be performed. */ | |
1284 | if (check | |
351f65ca L |
1285 | && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents, |
1286 | symtab_hdr, sym_hashes, | |
1287 | from_type, rel, relend)) | |
142411ca | 1288 | { |
2f629d23 | 1289 | reloc_howto_type *from, *to; |
4c544807 | 1290 | const char *name; |
142411ca | 1291 | |
351f65ca L |
1292 | from = elf_x86_64_rtype_to_howto (abfd, from_type); |
1293 | to = elf_x86_64_rtype_to_howto (abfd, to_type); | |
142411ca | 1294 | |
4c544807 L |
1295 | if (h) |
1296 | name = h->root.root.string; | |
1297 | else | |
1298 | { | |
351f65ca | 1299 | struct elf_x86_64_link_hash_table *htab; |
4dfe6ac6 | 1300 | |
351f65ca | 1301 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
1302 | if (htab == NULL) |
1303 | name = "*unknown*"; | |
1304 | else | |
1305 | { | |
1306 | Elf_Internal_Sym *isym; | |
1307 | ||
1308 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1309 | abfd, r_symndx); | |
1310 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1311 | } | |
4c544807 L |
1312 | } |
1313 | ||
142411ca L |
1314 | (*_bfd_error_handler) |
1315 | (_("%B: TLS transition from %s to %s against `%s' at 0x%lx " | |
1316 | "in section `%A' failed"), | |
4c544807 | 1317 | abfd, sec, from->name, to->name, name, |
142411ca L |
1318 | (unsigned long) rel->r_offset); |
1319 | bfd_set_error (bfd_error_bad_value); | |
1320 | return FALSE; | |
1321 | } | |
1322 | ||
1323 | *r_type = to_type; | |
1324 | return TRUE; | |
bffbf940 JJ |
1325 | } |
1326 | ||
70256ad8 | 1327 | /* Look through the relocs for a section during the first phase, and |
c434dee6 AJ |
1328 | calculate needed space in the global offset table, procedure |
1329 | linkage table, and dynamic reloc sections. */ | |
70256ad8 | 1330 | |
b34976b6 | 1331 | static bfd_boolean |
351f65ca L |
1332 | elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1333 | asection *sec, | |
1334 | const Elf_Internal_Rela *relocs) | |
70256ad8 | 1335 | { |
351f65ca | 1336 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
1337 | Elf_Internal_Shdr *symtab_hdr; |
1338 | struct elf_link_hash_entry **sym_hashes; | |
70256ad8 AJ |
1339 | const Elf_Internal_Rela *rel; |
1340 | const Elf_Internal_Rela *rel_end; | |
70256ad8 AJ |
1341 | asection *sreloc; |
1342 | ||
1049f94e | 1343 | if (info->relocatable) |
b34976b6 | 1344 | return TRUE; |
70256ad8 | 1345 | |
0ffa91dd NC |
1346 | BFD_ASSERT (is_x86_64_elf (abfd)); |
1347 | ||
351f65ca | 1348 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
1349 | if (htab == NULL) |
1350 | return FALSE; | |
1351 | ||
0ffa91dd | 1352 | symtab_hdr = &elf_symtab_hdr (abfd); |
70256ad8 | 1353 | sym_hashes = elf_sym_hashes (abfd); |
70256ad8 | 1354 | |
c434dee6 | 1355 | sreloc = NULL; |
cbe950e9 | 1356 | |
70256ad8 AJ |
1357 | rel_end = relocs + sec->reloc_count; |
1358 | for (rel = relocs; rel < rel_end; rel++) | |
1359 | { | |
bffbf940 | 1360 | unsigned int r_type; |
70256ad8 AJ |
1361 | unsigned long r_symndx; |
1362 | struct elf_link_hash_entry *h; | |
4c544807 L |
1363 | Elf_Internal_Sym *isym; |
1364 | const char *name; | |
70256ad8 | 1365 | |
351f65ca L |
1366 | r_symndx = htab->r_sym (rel->r_info); |
1367 | r_type = ELF32_R_TYPE (rel->r_info); | |
c434dee6 AJ |
1368 | |
1369 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
1370 | { | |
d003868e AM |
1371 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1372 | abfd, r_symndx); | |
b34976b6 | 1373 | return FALSE; |
c434dee6 AJ |
1374 | } |
1375 | ||
70256ad8 | 1376 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1377 | { |
1378 | /* A local symbol. */ | |
c2e61a4e L |
1379 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1380 | abfd, r_symndx); | |
1381 | if (isym == NULL) | |
1382 | return FALSE; | |
c25bc9fc L |
1383 | |
1384 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
351f65ca | 1385 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c25bc9fc | 1386 | { |
351f65ca L |
1387 | h = elf_x86_64_get_local_sym_hash (htab, abfd, rel, |
1388 | TRUE); | |
c25bc9fc | 1389 | if (h == NULL) |
c2e61a4e | 1390 | return FALSE; |
6bbec505 | 1391 | |
c25bc9fc L |
1392 | /* Fake a STT_GNU_IFUNC symbol. */ |
1393 | h->type = STT_GNU_IFUNC; | |
1394 | h->def_regular = 1; | |
1395 | h->ref_regular = 1; | |
1396 | h->forced_local = 1; | |
1397 | h->root.type = bfd_link_hash_defined; | |
1398 | } | |
1399 | else | |
1400 | h = NULL; | |
1401 | } | |
70256ad8 | 1402 | else |
71cb9464 | 1403 | { |
4c544807 | 1404 | isym = NULL; |
71cb9464 L |
1405 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1406 | while (h->root.type == bfd_link_hash_indirect | |
1407 | || h->root.type == bfd_link_hash_warning) | |
1408 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c25bc9fc | 1409 | } |
cbe950e9 | 1410 | |
d1534d16 L |
1411 | /* Check invalid x32 relocations. */ |
1412 | if (!ABI_64_P (abfd)) | |
1413 | switch (r_type) | |
1414 | { | |
1415 | default: | |
1416 | break; | |
1417 | ||
d1534d16 L |
1418 | case R_X86_64_DTPOFF64: |
1419 | case R_X86_64_TPOFF64: | |
1420 | case R_X86_64_PC64: | |
1421 | case R_X86_64_GOTOFF64: | |
1422 | case R_X86_64_GOT64: | |
1423 | case R_X86_64_GOTPCREL64: | |
1424 | case R_X86_64_GOTPC64: | |
1425 | case R_X86_64_GOTPLT64: | |
1426 | case R_X86_64_PLTOFF64: | |
1427 | { | |
1428 | if (h) | |
1429 | name = h->root.root.string; | |
1430 | else | |
1431 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1432 | NULL); | |
1433 | (*_bfd_error_handler) | |
1434 | (_("%B: relocation %s against symbol `%s' isn't " | |
1435 | "supported in x32 mode"), abfd, | |
1436 | x86_64_elf_howto_table[r_type].name, name); | |
1437 | bfd_set_error (bfd_error_bad_value); | |
1438 | return FALSE; | |
1439 | } | |
1440 | break; | |
1441 | } | |
1442 | ||
c25bc9fc L |
1443 | if (h != NULL) |
1444 | { | |
cbe950e9 L |
1445 | /* Create the ifunc sections for static executables. If we |
1446 | never see an indirect function symbol nor we are building | |
1447 | a static executable, those sections will be empty and | |
1448 | won't appear in output. */ | |
1449 | switch (r_type) | |
1450 | { | |
1451 | default: | |
1452 | break; | |
1453 | ||
1454 | case R_X86_64_32S: | |
1455 | case R_X86_64_32: | |
1456 | case R_X86_64_64: | |
1457 | case R_X86_64_PC32: | |
1458 | case R_X86_64_PC64: | |
1459 | case R_X86_64_PLT32: | |
1460 | case R_X86_64_GOTPCREL: | |
1461 | case R_X86_64_GOTPCREL64: | |
9d4057ee AM |
1462 | if (htab->elf.dynobj == NULL) |
1463 | htab->elf.dynobj = abfd; | |
1464 | if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
c2e61a4e | 1465 | return FALSE; |
cbe950e9 L |
1466 | break; |
1467 | } | |
1468 | ||
1469 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle | |
1470 | it here if it is defined in a non-shared object. */ | |
1471 | if (h->type == STT_GNU_IFUNC | |
1472 | && h->def_regular) | |
1473 | { | |
1474 | /* It is referenced by a non-shared object. */ | |
1475 | h->ref_regular = 1; | |
7ae26bc1 | 1476 | h->needs_plt = 1; |
6bbec505 | 1477 | |
cbe950e9 L |
1478 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1479 | h->plt.refcount += 1; | |
1480 | ||
1481 | /* STT_GNU_IFUNC needs dynamic sections. */ | |
1482 | if (htab->elf.dynobj == NULL) | |
1483 | htab->elf.dynobj = abfd; | |
1484 | ||
1485 | switch (r_type) | |
1486 | { | |
048cbda4 | 1487 | default: |
4c544807 L |
1488 | if (h->root.root.string) |
1489 | name = h->root.root.string; | |
1490 | else | |
1491 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1492 | NULL); | |
048cbda4 L |
1493 | (*_bfd_error_handler) |
1494 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
1495 | "symbol `%s' isn't handled by %s"), abfd, | |
1496 | x86_64_elf_howto_table[r_type].name, | |
4c544807 | 1497 | name, __FUNCTION__); |
048cbda4 | 1498 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1499 | return FALSE; |
cbe950e9 | 1500 | |
248775ba L |
1501 | case R_X86_64_32: |
1502 | if (ABI_64_P (abfd)) | |
1503 | goto not_pointer; | |
710ab287 L |
1504 | case R_X86_64_64: |
1505 | h->non_got_ref = 1; | |
1506 | h->pointer_equality_needed = 1; | |
1507 | if (info->shared) | |
1508 | { | |
710ab287 L |
1509 | /* We must copy these reloc types into the output |
1510 | file. Create a reloc section in dynobj and | |
1511 | make room for this reloc. */ | |
e03a8ed8 L |
1512 | sreloc = _bfd_elf_create_ifunc_dyn_reloc |
1513 | (abfd, info, sec, sreloc, | |
351f65ca | 1514 | &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs); |
710ab287 | 1515 | if (sreloc == NULL) |
c2e61a4e | 1516 | return FALSE; |
710ab287 L |
1517 | } |
1518 | break; | |
1519 | ||
cbe950e9 | 1520 | case R_X86_64_32S: |
cbe950e9 L |
1521 | case R_X86_64_PC32: |
1522 | case R_X86_64_PC64: | |
248775ba | 1523 | not_pointer: |
cbe950e9 L |
1524 | h->non_got_ref = 1; |
1525 | if (r_type != R_X86_64_PC32 | |
1526 | && r_type != R_X86_64_PC64) | |
1527 | h->pointer_equality_needed = 1; | |
1528 | break; | |
1529 | ||
1530 | case R_X86_64_PLT32: | |
1531 | break; | |
1532 | ||
1533 | case R_X86_64_GOTPCREL: | |
1534 | case R_X86_64_GOTPCREL64: | |
7afd84dc | 1535 | h->got.refcount += 1; |
6de2ae4a L |
1536 | if (htab->elf.sgot == NULL |
1537 | && !_bfd_elf_create_got_section (htab->elf.dynobj, | |
1538 | info)) | |
c2e61a4e | 1539 | return FALSE; |
cbe950e9 L |
1540 | break; |
1541 | } | |
1542 | ||
1543 | continue; | |
1544 | } | |
71cb9464 | 1545 | } |
70256ad8 | 1546 | |
351f65ca L |
1547 | if (! elf_x86_64_tls_transition (info, abfd, sec, NULL, |
1548 | symtab_hdr, sym_hashes, | |
1549 | &r_type, GOT_UNKNOWN, | |
1550 | rel, rel_end, h, r_symndx)) | |
c2e61a4e | 1551 | return FALSE; |
142411ca | 1552 | |
bffbf940 | 1553 | switch (r_type) |
70256ad8 | 1554 | { |
bffbf940 JJ |
1555 | case R_X86_64_TLSLD: |
1556 | htab->tls_ld_got.refcount += 1; | |
1557 | goto create_got; | |
1558 | ||
1559 | case R_X86_64_TPOFF32: | |
351f65ca | 1560 | if (!info->executable && ABI_64_P (abfd)) |
70256ad8 | 1561 | { |
09a24cbf | 1562 | if (h) |
4c544807 L |
1563 | name = h->root.root.string; |
1564 | else | |
1565 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1566 | NULL); | |
bffbf940 | 1567 | (*_bfd_error_handler) |
d003868e AM |
1568 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
1569 | abfd, | |
4c544807 | 1570 | x86_64_elf_howto_table[r_type].name, name); |
bffbf940 | 1571 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1572 | return FALSE; |
70256ad8 | 1573 | } |
bffbf940 | 1574 | break; |
c434dee6 | 1575 | |
bffbf940 | 1576 | case R_X86_64_GOTTPOFF: |
1d85728f | 1577 | if (!info->executable) |
bffbf940 JJ |
1578 | info->flags |= DF_STATIC_TLS; |
1579 | /* Fall through */ | |
70256ad8 | 1580 | |
bffbf940 JJ |
1581 | case R_X86_64_GOT32: |
1582 | case R_X86_64_GOTPCREL: | |
1583 | case R_X86_64_TLSGD: | |
7b81dfbb AJ |
1584 | case R_X86_64_GOT64: |
1585 | case R_X86_64_GOTPCREL64: | |
1586 | case R_X86_64_GOTPLT64: | |
67a4f2b7 AO |
1587 | case R_X86_64_GOTPC32_TLSDESC: |
1588 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 JJ |
1589 | /* This symbol requires a global offset table entry. */ |
1590 | { | |
1591 | int tls_type, old_tls_type; | |
1592 | ||
1593 | switch (r_type) | |
1594 | { | |
1595 | default: tls_type = GOT_NORMAL; break; | |
1596 | case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break; | |
1597 | case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break; | |
67a4f2b7 AO |
1598 | case R_X86_64_GOTPC32_TLSDESC: |
1599 | case R_X86_64_TLSDESC_CALL: | |
1600 | tls_type = GOT_TLS_GDESC; break; | |
bffbf940 JJ |
1601 | } |
1602 | ||
1603 | if (h != NULL) | |
1604 | { | |
7b81dfbb AJ |
1605 | if (r_type == R_X86_64_GOTPLT64) |
1606 | { | |
1607 | /* This relocation indicates that we also need | |
1608 | a PLT entry, as this is a function. We don't need | |
1609 | a PLT entry for local symbols. */ | |
1610 | h->needs_plt = 1; | |
1611 | h->plt.refcount += 1; | |
1612 | } | |
bffbf940 | 1613 | h->got.refcount += 1; |
351f65ca | 1614 | old_tls_type = elf_x86_64_hash_entry (h)->tls_type; |
bffbf940 JJ |
1615 | } |
1616 | else | |
1617 | { | |
1618 | bfd_signed_vma *local_got_refcounts; | |
1619 | ||
1620 | /* This is a global offset table entry for a local symbol. */ | |
1621 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1622 | if (local_got_refcounts == NULL) | |
1623 | { | |
1624 | bfd_size_type size; | |
1625 | ||
1626 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1627 | size *= sizeof (bfd_signed_vma) |
1628 | + sizeof (bfd_vma) + sizeof (char); | |
bffbf940 JJ |
1629 | local_got_refcounts = ((bfd_signed_vma *) |
1630 | bfd_zalloc (abfd, size)); | |
1631 | if (local_got_refcounts == NULL) | |
c2e61a4e | 1632 | return FALSE; |
bffbf940 | 1633 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
351f65ca | 1634 | elf_x86_64_local_tlsdesc_gotent (abfd) |
67a4f2b7 | 1635 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); |
351f65ca | 1636 | elf_x86_64_local_got_tls_type (abfd) |
67a4f2b7 | 1637 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
bffbf940 JJ |
1638 | } |
1639 | local_got_refcounts[r_symndx] += 1; | |
1640 | old_tls_type | |
351f65ca | 1641 | = elf_x86_64_local_got_tls_type (abfd) [r_symndx]; |
bffbf940 JJ |
1642 | } |
1643 | ||
1644 | /* If a TLS symbol is accessed using IE at least once, | |
1645 | there is no point to use dynamic model for it. */ | |
1646 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN | |
67a4f2b7 AO |
1647 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
1648 | || tls_type != GOT_TLS_IE)) | |
bffbf940 | 1649 | { |
67a4f2b7 | 1650 | if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type)) |
bffbf940 | 1651 | tls_type = old_tls_type; |
67a4f2b7 AO |
1652 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1653 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1654 | tls_type |= old_tls_type; | |
bffbf940 JJ |
1655 | else |
1656 | { | |
09a24cbf | 1657 | if (h) |
4c544807 L |
1658 | name = h->root.root.string; |
1659 | else | |
1660 | name = bfd_elf_sym_name (abfd, symtab_hdr, | |
1661 | isym, NULL); | |
bffbf940 | 1662 | (*_bfd_error_handler) |
1f7a4e42 | 1663 | (_("%B: '%s' accessed both as normal and thread local symbol"), |
4c544807 | 1664 | abfd, name); |
c2e61a4e | 1665 | return FALSE; |
bffbf940 JJ |
1666 | } |
1667 | } | |
1668 | ||
1669 | if (old_tls_type != tls_type) | |
1670 | { | |
1671 | if (h != NULL) | |
351f65ca | 1672 | elf_x86_64_hash_entry (h)->tls_type = tls_type; |
bffbf940 | 1673 | else |
351f65ca | 1674 | elf_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type; |
bffbf940 JJ |
1675 | } |
1676 | } | |
c434dee6 AJ |
1677 | /* Fall through */ |
1678 | ||
d6ab8113 JB |
1679 | case R_X86_64_GOTOFF64: |
1680 | case R_X86_64_GOTPC32: | |
7b81dfbb | 1681 | case R_X86_64_GOTPC64: |
bffbf940 | 1682 | create_got: |
6de2ae4a | 1683 | if (htab->elf.sgot == NULL) |
c434dee6 AJ |
1684 | { |
1685 | if (htab->elf.dynobj == NULL) | |
1686 | htab->elf.dynobj = abfd; | |
6de2ae4a L |
1687 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, |
1688 | info)) | |
c2e61a4e | 1689 | return FALSE; |
c434dee6 | 1690 | } |
70256ad8 AJ |
1691 | break; |
1692 | ||
1693 | case R_X86_64_PLT32: | |
1694 | /* This symbol requires a procedure linkage table entry. We | |
407443a3 AJ |
1695 | actually build the entry in adjust_dynamic_symbol, |
1696 | because this might be a case of linking PIC code which is | |
1697 | never referenced by a dynamic object, in which case we | |
1698 | don't need to generate a procedure linkage table entry | |
1699 | after all. */ | |
70256ad8 AJ |
1700 | |
1701 | /* If this is a local symbol, we resolve it directly without | |
407443a3 | 1702 | creating a procedure linkage table entry. */ |
70256ad8 AJ |
1703 | if (h == NULL) |
1704 | continue; | |
1705 | ||
f5385ebf | 1706 | h->needs_plt = 1; |
51b64d56 | 1707 | h->plt.refcount += 1; |
70256ad8 AJ |
1708 | break; |
1709 | ||
7b81dfbb AJ |
1710 | case R_X86_64_PLTOFF64: |
1711 | /* This tries to form the 'address' of a function relative | |
1712 | to GOT. For global symbols we need a PLT entry. */ | |
1713 | if (h != NULL) | |
1714 | { | |
1715 | h->needs_plt = 1; | |
1716 | h->plt.refcount += 1; | |
1717 | } | |
1718 | goto create_got; | |
1719 | ||
248775ba L |
1720 | case R_X86_64_32: |
1721 | if (!ABI_64_P (abfd)) | |
1722 | goto pointer; | |
cc78d0af AJ |
1723 | case R_X86_64_8: |
1724 | case R_X86_64_16: | |
70256ad8 | 1725 | case R_X86_64_32S: |
1b71fb54 AJ |
1726 | /* Let's help debug shared library creation. These relocs |
1727 | cannot be used in shared libs. Don't error out for | |
1728 | sections we don't care about, such as debug sections or | |
1729 | non-constant sections. */ | |
1730 | if (info->shared | |
1731 | && (sec->flags & SEC_ALLOC) != 0 | |
1732 | && (sec->flags & SEC_READONLY) != 0) | |
1733 | { | |
09a24cbf | 1734 | if (h) |
4c544807 L |
1735 | name = h->root.root.string; |
1736 | else | |
1737 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1b71fb54 | 1738 | (*_bfd_error_handler) |
d003868e | 1739 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
4c544807 | 1740 | abfd, x86_64_elf_howto_table[r_type].name, name); |
1b71fb54 | 1741 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1742 | return FALSE; |
1b71fb54 AJ |
1743 | } |
1744 | /* Fall through. */ | |
1745 | ||
c434dee6 AJ |
1746 | case R_X86_64_PC8: |
1747 | case R_X86_64_PC16: | |
70256ad8 | 1748 | case R_X86_64_PC32: |
d6ab8113 | 1749 | case R_X86_64_PC64: |
1b71fb54 | 1750 | case R_X86_64_64: |
248775ba | 1751 | pointer: |
710ab287 | 1752 | if (h != NULL && info->executable) |
c434dee6 AJ |
1753 | { |
1754 | /* If this reloc is in a read-only section, we might | |
1755 | need a copy reloc. We can't check reliably at this | |
1756 | stage whether the section is read-only, as input | |
1757 | sections have not yet been mapped to output sections. | |
1758 | Tentatively set the flag for now, and correct in | |
1759 | adjust_dynamic_symbol. */ | |
f5385ebf | 1760 | h->non_got_ref = 1; |
c434dee6 AJ |
1761 | |
1762 | /* We may need a .plt entry if the function this reloc | |
1763 | refers to is in a shared lib. */ | |
1764 | h->plt.refcount += 1; | |
d6ab8113 | 1765 | if (r_type != R_X86_64_PC32 && r_type != R_X86_64_PC64) |
f5385ebf | 1766 | h->pointer_equality_needed = 1; |
c434dee6 | 1767 | } |
70256ad8 AJ |
1768 | |
1769 | /* If we are creating a shared library, and this is a reloc | |
1770 | against a global symbol, or a non PC relative reloc | |
1771 | against a local symbol, then we need to copy the reloc | |
1772 | into the shared library. However, if we are linking with | |
1773 | -Bsymbolic, we do not need to copy a reloc against a | |
1774 | global symbol which is defined in an object we are | |
407443a3 | 1775 | including in the link (i.e., DEF_REGULAR is set). At |
70256ad8 AJ |
1776 | this point we have not seen all the input files, so it is |
1777 | possible that DEF_REGULAR is not set now but will be set | |
c434dee6 AJ |
1778 | later (it is never cleared). In case of a weak definition, |
1779 | DEF_REGULAR may be cleared later by a strong definition in | |
1780 | a shared library. We account for that possibility below by | |
1781 | storing information in the relocs_copied field of the hash | |
1782 | table entry. A similar situation occurs when creating | |
1783 | shared libraries and symbol visibility changes render the | |
1784 | symbol local. | |
1785 | ||
1786 | If on the other hand, we are creating an executable, we | |
1787 | may need to keep relocations for symbols satisfied by a | |
1788 | dynamic library if we manage to avoid copy relocs for the | |
0f88be7a | 1789 | symbol. */ |
c434dee6 AJ |
1790 | if ((info->shared |
1791 | && (sec->flags & SEC_ALLOC) != 0 | |
d8045f23 | 1792 | && (! IS_X86_64_PCREL_TYPE (r_type) |
c434dee6 | 1793 | || (h != NULL |
55255dae | 1794 | && (! SYMBOLIC_BIND (info, h) |
c434dee6 | 1795 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1796 | || !h->def_regular)))) |
d40d037c AJ |
1797 | || (ELIMINATE_COPY_RELOCS |
1798 | && !info->shared | |
c434dee6 AJ |
1799 | && (sec->flags & SEC_ALLOC) != 0 |
1800 | && h != NULL | |
1801 | && (h->root.type == bfd_link_hash_defweak | |
0f88be7a | 1802 | || !h->def_regular))) |
70256ad8 | 1803 | { |
e03a8ed8 L |
1804 | struct elf_dyn_relocs *p; |
1805 | struct elf_dyn_relocs **head; | |
c434dee6 AJ |
1806 | |
1807 | /* We must copy these reloc types into the output file. | |
1808 | Create a reloc section in dynobj and make room for | |
1809 | this reloc. */ | |
70256ad8 AJ |
1810 | if (sreloc == NULL) |
1811 | { | |
c434dee6 AJ |
1812 | if (htab->elf.dynobj == NULL) |
1813 | htab->elf.dynobj = abfd; | |
1814 | ||
83bac4b0 | 1815 | sreloc = _bfd_elf_make_dynamic_reloc_section |
82e96e07 L |
1816 | (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2, |
1817 | abfd, /*rela?*/ TRUE); | |
70256ad8 | 1818 | |
70256ad8 | 1819 | if (sreloc == NULL) |
c2e61a4e | 1820 | return FALSE; |
70256ad8 AJ |
1821 | } |
1822 | ||
c434dee6 AJ |
1823 | /* If this is a global symbol, we count the number of |
1824 | relocations we need for this symbol. */ | |
1825 | if (h != NULL) | |
70256ad8 | 1826 | { |
351f65ca | 1827 | head = &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs; |
c434dee6 AJ |
1828 | } |
1829 | else | |
1830 | { | |
1831 | /* Track dynamic relocs needed for local syms too. | |
1832 | We really need local syms available to do this | |
1833 | easily. Oh well. */ | |
c434dee6 | 1834 | asection *s; |
87d72d41 | 1835 | void **vpp; |
87d72d41 AM |
1836 | |
1837 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1838 | abfd, r_symndx); | |
1839 | if (isym == NULL) | |
1840 | return FALSE; | |
1841 | ||
1842 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
c434dee6 | 1843 | if (s == NULL) |
87d72d41 | 1844 | s = sec; |
70256ad8 | 1845 | |
e81d3500 DD |
1846 | /* Beware of type punned pointers vs strict aliasing |
1847 | rules. */ | |
1848 | vpp = &(elf_section_data (s)->local_dynrel); | |
e03a8ed8 | 1849 | head = (struct elf_dyn_relocs **)vpp; |
c434dee6 | 1850 | } |
70256ad8 | 1851 | |
c434dee6 AJ |
1852 | p = *head; |
1853 | if (p == NULL || p->sec != sec) | |
1854 | { | |
1855 | bfd_size_type amt = sizeof *p; | |
d8045f23 | 1856 | |
e03a8ed8 | 1857 | p = ((struct elf_dyn_relocs *) |
c434dee6 | 1858 | bfd_alloc (htab->elf.dynobj, amt)); |
70256ad8 | 1859 | if (p == NULL) |
c2e61a4e | 1860 | return FALSE; |
c434dee6 AJ |
1861 | p->next = *head; |
1862 | *head = p; | |
1863 | p->sec = sec; | |
1864 | p->count = 0; | |
1865 | p->pc_count = 0; | |
70256ad8 | 1866 | } |
c434dee6 AJ |
1867 | |
1868 | p->count += 1; | |
d8045f23 | 1869 | if (IS_X86_64_PCREL_TYPE (r_type)) |
c434dee6 | 1870 | p->pc_count += 1; |
70256ad8 AJ |
1871 | } |
1872 | break; | |
fe4770f4 AJ |
1873 | |
1874 | /* This relocation describes the C++ object vtable hierarchy. | |
1875 | Reconstruct it for later use during GC. */ | |
1876 | case R_X86_64_GNU_VTINHERIT: | |
c152c796 | 1877 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
c2e61a4e | 1878 | return FALSE; |
fe4770f4 AJ |
1879 | break; |
1880 | ||
1881 | /* This relocation describes which C++ vtable entries are actually | |
1882 | used. Record for later use during GC. */ | |
1883 | case R_X86_64_GNU_VTENTRY: | |
d17e0c6e JB |
1884 | BFD_ASSERT (h != NULL); |
1885 | if (h != NULL | |
1886 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
c2e61a4e | 1887 | return FALSE; |
fe4770f4 | 1888 | break; |
c434dee6 AJ |
1889 | |
1890 | default: | |
1891 | break; | |
70256ad8 AJ |
1892 | } |
1893 | } | |
1894 | ||
b34976b6 | 1895 | return TRUE; |
70256ad8 AJ |
1896 | } |
1897 | ||
1898 | /* Return the section that should be marked against GC for a given | |
407443a3 | 1899 | relocation. */ |
70256ad8 AJ |
1900 | |
1901 | static asection * | |
351f65ca L |
1902 | elf_x86_64_gc_mark_hook (asection *sec, |
1903 | struct bfd_link_info *info, | |
1904 | Elf_Internal_Rela *rel, | |
1905 | struct elf_link_hash_entry *h, | |
1906 | Elf_Internal_Sym *sym) | |
70256ad8 AJ |
1907 | { |
1908 | if (h != NULL) | |
351f65ca | 1909 | switch (ELF32_R_TYPE (rel->r_info)) |
07adf181 AM |
1910 | { |
1911 | case R_X86_64_GNU_VTINHERIT: | |
1912 | case R_X86_64_GNU_VTENTRY: | |
1913 | return NULL; | |
1914 | } | |
1915 | ||
1916 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
70256ad8 AJ |
1917 | } |
1918 | ||
407443a3 | 1919 | /* Update the got entry reference counts for the section being removed. */ |
70256ad8 | 1920 | |
b34976b6 | 1921 | static bfd_boolean |
351f65ca L |
1922 | elf_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
1923 | asection *sec, | |
1924 | const Elf_Internal_Rela *relocs) | |
70256ad8 | 1925 | { |
351f65ca | 1926 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
1927 | Elf_Internal_Shdr *symtab_hdr; |
1928 | struct elf_link_hash_entry **sym_hashes; | |
1929 | bfd_signed_vma *local_got_refcounts; | |
1930 | const Elf_Internal_Rela *rel, *relend; | |
c434dee6 | 1931 | |
7dda2462 TG |
1932 | if (info->relocatable) |
1933 | return TRUE; | |
1934 | ||
351f65ca | 1935 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
1936 | if (htab == NULL) |
1937 | return FALSE; | |
1938 | ||
c434dee6 | 1939 | elf_section_data (sec)->local_dynrel = NULL; |
70256ad8 | 1940 | |
0ffa91dd | 1941 | symtab_hdr = &elf_symtab_hdr (abfd); |
70256ad8 AJ |
1942 | sym_hashes = elf_sym_hashes (abfd); |
1943 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1944 | ||
351f65ca | 1945 | htab = elf_x86_64_hash_table (info); |
70256ad8 AJ |
1946 | relend = relocs + sec->reloc_count; |
1947 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1948 | { |
1949 | unsigned long r_symndx; | |
1950 | unsigned int r_type; | |
1951 | struct elf_link_hash_entry *h = NULL; | |
70256ad8 | 1952 | |
351f65ca | 1953 | r_symndx = htab->r_sym (rel->r_info); |
26e41594 AM |
1954 | if (r_symndx >= symtab_hdr->sh_info) |
1955 | { | |
26e41594 | 1956 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1957 | while (h->root.type == bfd_link_hash_indirect |
1958 | || h->root.type == bfd_link_hash_warning) | |
1959 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1960 | } |
bb1cb422 L |
1961 | else |
1962 | { | |
1963 | /* A local symbol. */ | |
1964 | Elf_Internal_Sym *isym; | |
1965 | ||
1966 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1967 | abfd, r_symndx); | |
1968 | ||
1969 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
1970 | if (isym != NULL | |
82e96e07 | 1971 | && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
bb1cb422 | 1972 | { |
351f65ca | 1973 | h = elf_x86_64_get_local_sym_hash (htab, abfd, rel, FALSE); |
bb1cb422 L |
1974 | if (h == NULL) |
1975 | abort (); | |
1976 | } | |
1977 | } | |
c434dee6 | 1978 | |
3db2e7dd L |
1979 | if (h) |
1980 | { | |
1981 | struct elf_x86_64_link_hash_entry *eh; | |
1982 | struct elf_dyn_relocs **pp; | |
1983 | struct elf_dyn_relocs *p; | |
1984 | ||
1985 | eh = (struct elf_x86_64_link_hash_entry *) h; | |
1986 | ||
1987 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
1988 | if (p->sec == sec) | |
1989 | { | |
1990 | /* Everything must go for SEC. */ | |
1991 | *pp = p->next; | |
1992 | break; | |
1993 | } | |
1994 | } | |
1995 | ||
351f65ca L |
1996 | r_type = ELF32_R_TYPE (rel->r_info); |
1997 | if (! elf_x86_64_tls_transition (info, abfd, sec, NULL, | |
1998 | symtab_hdr, sym_hashes, | |
1999 | &r_type, GOT_UNKNOWN, | |
2000 | rel, relend, h, r_symndx)) | |
142411ca L |
2001 | return FALSE; |
2002 | ||
26e41594 AM |
2003 | switch (r_type) |
2004 | { | |
2005 | case R_X86_64_TLSLD: | |
4dfe6ac6 NC |
2006 | if (htab->tls_ld_got.refcount > 0) |
2007 | htab->tls_ld_got.refcount -= 1; | |
26e41594 | 2008 | break; |
c434dee6 | 2009 | |
26e41594 | 2010 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
2011 | case R_X86_64_GOTPC32_TLSDESC: |
2012 | case R_X86_64_TLSDESC_CALL: | |
26e41594 AM |
2013 | case R_X86_64_GOTTPOFF: |
2014 | case R_X86_64_GOT32: | |
2015 | case R_X86_64_GOTPCREL: | |
7b81dfbb AJ |
2016 | case R_X86_64_GOT64: |
2017 | case R_X86_64_GOTPCREL64: | |
2018 | case R_X86_64_GOTPLT64: | |
26e41594 AM |
2019 | if (h != NULL) |
2020 | { | |
7b81dfbb AJ |
2021 | if (r_type == R_X86_64_GOTPLT64 && h->plt.refcount > 0) |
2022 | h->plt.refcount -= 1; | |
26e41594 AM |
2023 | if (h->got.refcount > 0) |
2024 | h->got.refcount -= 1; | |
bb1cb422 L |
2025 | if (h->type == STT_GNU_IFUNC) |
2026 | { | |
2027 | if (h->plt.refcount > 0) | |
2028 | h->plt.refcount -= 1; | |
2029 | } | |
26e41594 AM |
2030 | } |
2031 | else if (local_got_refcounts != NULL) | |
2032 | { | |
2033 | if (local_got_refcounts[r_symndx] > 0) | |
2034 | local_got_refcounts[r_symndx] -= 1; | |
2035 | } | |
2036 | break; | |
c434dee6 | 2037 | |
26e41594 AM |
2038 | case R_X86_64_8: |
2039 | case R_X86_64_16: | |
2040 | case R_X86_64_32: | |
2041 | case R_X86_64_64: | |
2042 | case R_X86_64_32S: | |
2043 | case R_X86_64_PC8: | |
2044 | case R_X86_64_PC16: | |
2045 | case R_X86_64_PC32: | |
d6ab8113 | 2046 | case R_X86_64_PC64: |
3db2e7dd L |
2047 | if (info->shared |
2048 | && (h == NULL || h->type != STT_GNU_IFUNC)) | |
26e41594 AM |
2049 | break; |
2050 | /* Fall thru */ | |
c434dee6 | 2051 | |
26e41594 | 2052 | case R_X86_64_PLT32: |
7b81dfbb | 2053 | case R_X86_64_PLTOFF64: |
26e41594 AM |
2054 | if (h != NULL) |
2055 | { | |
2056 | if (h->plt.refcount > 0) | |
2057 | h->plt.refcount -= 1; | |
2058 | } | |
2059 | break; | |
70256ad8 | 2060 | |
26e41594 AM |
2061 | default: |
2062 | break; | |
2063 | } | |
2064 | } | |
70256ad8 | 2065 | |
b34976b6 | 2066 | return TRUE; |
70256ad8 AJ |
2067 | } |
2068 | ||
2069 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2070 | regular object. The current definition is in some section of the | |
2071 | dynamic object, but we're not including those sections. We have to | |
2072 | change the definition to something the rest of the link can | |
407443a3 | 2073 | understand. */ |
70256ad8 | 2074 | |
b34976b6 | 2075 | static bfd_boolean |
351f65ca L |
2076 | elf_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info, |
2077 | struct elf_link_hash_entry *h) | |
70256ad8 | 2078 | { |
351f65ca | 2079 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 | 2080 | asection *s; |
70256ad8 | 2081 | |
cbe950e9 L |
2082 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
2083 | if (h->type == STT_GNU_IFUNC) | |
2084 | { | |
2085 | if (h->plt.refcount <= 0) | |
2086 | { | |
2087 | h->plt.offset = (bfd_vma) -1; | |
2088 | h->needs_plt = 0; | |
2089 | } | |
2090 | return TRUE; | |
2091 | } | |
2092 | ||
70256ad8 AJ |
2093 | /* If this is a function, put it in the procedure linkage table. We |
2094 | will fill in the contents of the procedure linkage table later, | |
2095 | when we know the address of the .got section. */ | |
2096 | if (h->type == STT_FUNC | |
f5385ebf | 2097 | || h->needs_plt) |
70256ad8 | 2098 | { |
c434dee6 | 2099 | if (h->plt.refcount <= 0 |
27482721 AJ |
2100 | || SYMBOL_CALLS_LOCAL (info, h) |
2101 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
2102 | && h->root.type == bfd_link_hash_undefweak)) | |
70256ad8 | 2103 | { |
70256ad8 AJ |
2104 | /* This case can occur if we saw a PLT32 reloc in an input |
2105 | file, but the symbol was never referred to by a dynamic | |
2106 | object, or if all references were garbage collected. In | |
2107 | such a case, we don't actually need to build a procedure | |
2108 | linkage table, and we can just do a PC32 reloc instead. */ | |
70256ad8 | 2109 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2110 | h->needs_plt = 0; |
70256ad8 AJ |
2111 | } |
2112 | ||
b34976b6 | 2113 | return TRUE; |
70256ad8 | 2114 | } |
bbd7ec4a | 2115 | else |
c434dee6 AJ |
2116 | /* It's possible that we incorrectly decided a .plt reloc was |
2117 | needed for an R_X86_64_PC32 reloc to a non-function sym in | |
2118 | check_relocs. We can't decide accurately between function and | |
2119 | non-function syms in check-relocs; Objects loaded later in | |
2120 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 2121 | h->plt.offset = (bfd_vma) -1; |
70256ad8 AJ |
2122 | |
2123 | /* If this is a weak symbol, and there is a real definition, the | |
2124 | processor independent code will have arranged for us to see the | |
407443a3 | 2125 | real definition first, and we can just use the same value. */ |
f6e332e6 | 2126 | if (h->u.weakdef != NULL) |
70256ad8 | 2127 | { |
f6e332e6 AM |
2128 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2129 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2130 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2131 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
d40d037c | 2132 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 2133 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 2134 | return TRUE; |
70256ad8 AJ |
2135 | } |
2136 | ||
2137 | /* This is a reference to a symbol defined by a dynamic object which | |
407443a3 | 2138 | is not a function. */ |
70256ad8 AJ |
2139 | |
2140 | /* If we are creating a shared library, we must presume that the | |
2141 | only references to the symbol are via the global offset table. | |
2142 | For such cases we need not do anything here; the relocations will | |
407443a3 | 2143 | be handled correctly by relocate_section. */ |
70256ad8 | 2144 | if (info->shared) |
b34976b6 | 2145 | return TRUE; |
70256ad8 AJ |
2146 | |
2147 | /* If there are no references to this symbol that do not use the | |
2148 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 2149 | if (!h->non_got_ref) |
b34976b6 | 2150 | return TRUE; |
70256ad8 | 2151 | |
c434dee6 AJ |
2152 | /* If -z nocopyreloc was given, we won't generate them either. */ |
2153 | if (info->nocopyreloc) | |
2154 | { | |
f5385ebf | 2155 | h->non_got_ref = 0; |
b34976b6 | 2156 | return TRUE; |
c434dee6 AJ |
2157 | } |
2158 | ||
d40d037c | 2159 | if (ELIMINATE_COPY_RELOCS) |
c434dee6 | 2160 | { |
351f65ca | 2161 | struct elf_x86_64_link_hash_entry * eh; |
e03a8ed8 | 2162 | struct elf_dyn_relocs *p; |
c434dee6 | 2163 | |
351f65ca | 2164 | eh = (struct elf_x86_64_link_hash_entry *) h; |
d40d037c AJ |
2165 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
2166 | { | |
2167 | s = p->sec->output_section; | |
2168 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2169 | break; | |
2170 | } | |
2171 | ||
2172 | /* If we didn't find any dynamic relocs in read-only sections, then | |
2173 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
2174 | if (p == NULL) | |
2175 | { | |
f5385ebf | 2176 | h->non_got_ref = 0; |
d40d037c AJ |
2177 | return TRUE; |
2178 | } | |
c434dee6 AJ |
2179 | } |
2180 | ||
909272ee AM |
2181 | if (h->size == 0) |
2182 | { | |
2183 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
2184 | h->root.root.string); | |
2185 | return TRUE; | |
2186 | } | |
2187 | ||
70256ad8 | 2188 | /* We must allocate the symbol in our .dynbss section, which will |
407443a3 | 2189 | become part of the .bss section of the executable. There will be |
70256ad8 AJ |
2190 | an entry for this symbol in the .dynsym section. The dynamic |
2191 | object will contain position independent code, so all references | |
2192 | from the dynamic object to this symbol will go through the global | |
2193 | offset table. The dynamic linker will use the .dynsym entry to | |
2194 | determine the address it must put in the global offset table, so | |
2195 | both the dynamic object and the regular object will refer to the | |
2196 | same memory location for the variable. */ | |
2197 | ||
351f65ca | 2198 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2199 | if (htab == NULL) |
2200 | return FALSE; | |
70256ad8 AJ |
2201 | |
2202 | /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker | |
2203 | to copy the initial value out of the dynamic object and into the | |
cedb70c5 | 2204 | runtime process image. */ |
70256ad8 AJ |
2205 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
2206 | { | |
351f65ca L |
2207 | const struct elf_backend_data *bed; |
2208 | bed = get_elf_backend_data (info->output_bfd); | |
2209 | htab->srelbss->size += bed->s->sizeof_rela; | |
f5385ebf | 2210 | h->needs_copy = 1; |
70256ad8 AJ |
2211 | } |
2212 | ||
c434dee6 | 2213 | s = htab->sdynbss; |
70256ad8 | 2214 | |
027297b7 | 2215 | return _bfd_elf_adjust_dynamic_copy (h, s); |
70256ad8 AJ |
2216 | } |
2217 | ||
c434dee6 AJ |
2218 | /* Allocate space in .plt, .got and associated reloc sections for |
2219 | dynamic relocs. */ | |
2220 | ||
b34976b6 | 2221 | static bfd_boolean |
351f65ca | 2222 | elf_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
c434dee6 AJ |
2223 | { |
2224 | struct bfd_link_info *info; | |
351f65ca L |
2225 | struct elf_x86_64_link_hash_table *htab; |
2226 | struct elf_x86_64_link_hash_entry *eh; | |
e03a8ed8 | 2227 | struct elf_dyn_relocs *p; |
351f65ca | 2228 | const struct elf_backend_data *bed; |
c434dee6 | 2229 | |
e92d460e | 2230 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 2231 | return TRUE; |
c434dee6 | 2232 | |
351f65ca | 2233 | eh = (struct elf_x86_64_link_hash_entry *) h; |
e92d460e | 2234 | |
c434dee6 | 2235 | info = (struct bfd_link_info *) inf; |
351f65ca | 2236 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2237 | if (htab == NULL) |
2238 | return FALSE; | |
351f65ca | 2239 | bed = get_elf_backend_data (info->output_bfd); |
c434dee6 | 2240 | |
cbe950e9 L |
2241 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
2242 | here if it is defined and referenced in a non-shared object. */ | |
2243 | if (h->type == STT_GNU_IFUNC | |
2244 | && h->def_regular) | |
e03a8ed8 L |
2245 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, |
2246 | &eh->dyn_relocs, | |
2247 | PLT_ENTRY_SIZE, | |
2248 | GOT_ENTRY_SIZE); | |
cbe950e9 L |
2249 | else if (htab->elf.dynamic_sections_created |
2250 | && h->plt.refcount > 0) | |
c434dee6 AJ |
2251 | { |
2252 | /* Make sure this symbol is output as a dynamic symbol. | |
2253 | Undefined weak syms won't yet be marked as dynamic. */ | |
2254 | if (h->dynindx == -1 | |
f5385ebf | 2255 | && !h->forced_local) |
c434dee6 | 2256 | { |
c152c796 | 2257 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2258 | return FALSE; |
c434dee6 AJ |
2259 | } |
2260 | ||
27482721 AJ |
2261 | if (info->shared |
2262 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
c434dee6 | 2263 | { |
6de2ae4a | 2264 | asection *s = htab->elf.splt; |
c434dee6 AJ |
2265 | |
2266 | /* If this is the first .plt entry, make room for the special | |
2267 | first entry. */ | |
eea6121a AM |
2268 | if (s->size == 0) |
2269 | s->size += PLT_ENTRY_SIZE; | |
c434dee6 | 2270 | |
eea6121a | 2271 | h->plt.offset = s->size; |
c434dee6 AJ |
2272 | |
2273 | /* If this symbol is not defined in a regular file, and we are | |
2274 | not generating a shared library, then set the symbol to this | |
2275 | location in the .plt. This is required to make function | |
2276 | pointers compare as equal between the normal executable and | |
2277 | the shared library. */ | |
2278 | if (! info->shared | |
f5385ebf | 2279 | && !h->def_regular) |
c434dee6 AJ |
2280 | { |
2281 | h->root.u.def.section = s; | |
2282 | h->root.u.def.value = h->plt.offset; | |
2283 | } | |
2284 | ||
2285 | /* Make room for this entry. */ | |
eea6121a | 2286 | s->size += PLT_ENTRY_SIZE; |
c434dee6 AJ |
2287 | |
2288 | /* We also need to make an entry in the .got.plt section, which | |
2289 | will be placed in the .got section by the linker script. */ | |
6de2ae4a | 2290 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
c434dee6 AJ |
2291 | |
2292 | /* We also need to make an entry in the .rela.plt section. */ | |
351f65ca | 2293 | htab->elf.srelplt->size += bed->s->sizeof_rela; |
6de2ae4a | 2294 | htab->elf.srelplt->reloc_count++; |
c434dee6 AJ |
2295 | } |
2296 | else | |
2297 | { | |
2298 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 2299 | h->needs_plt = 0; |
c434dee6 AJ |
2300 | } |
2301 | } | |
2302 | else | |
2303 | { | |
2304 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 2305 | h->needs_plt = 0; |
c434dee6 AJ |
2306 | } |
2307 | ||
67a4f2b7 AO |
2308 | eh->tlsdesc_got = (bfd_vma) -1; |
2309 | ||
bffbf940 JJ |
2310 | /* If R_X86_64_GOTTPOFF symbol is now local to the binary, |
2311 | make it a R_X86_64_TPOFF32 requiring no GOT entry. */ | |
2312 | if (h->got.refcount > 0 | |
1d85728f | 2313 | && info->executable |
bffbf940 | 2314 | && h->dynindx == -1 |
351f65ca | 2315 | && elf_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE) |
d8045f23 NC |
2316 | { |
2317 | h->got.offset = (bfd_vma) -1; | |
2318 | } | |
bffbf940 | 2319 | else if (h->got.refcount > 0) |
c434dee6 AJ |
2320 | { |
2321 | asection *s; | |
b34976b6 | 2322 | bfd_boolean dyn; |
351f65ca | 2323 | int tls_type = elf_x86_64_hash_entry (h)->tls_type; |
c434dee6 AJ |
2324 | |
2325 | /* Make sure this symbol is output as a dynamic symbol. | |
2326 | Undefined weak syms won't yet be marked as dynamic. */ | |
2327 | if (h->dynindx == -1 | |
f5385ebf | 2328 | && !h->forced_local) |
c434dee6 | 2329 | { |
c152c796 | 2330 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2331 | return FALSE; |
c434dee6 AJ |
2332 | } |
2333 | ||
67a4f2b7 AO |
2334 | if (GOT_TLS_GDESC_P (tls_type)) |
2335 | { | |
6de2ae4a | 2336 | eh->tlsdesc_got = htab->elf.sgotplt->size |
351f65ca | 2337 | - elf_x86_64_compute_jump_table_size (htab); |
6de2ae4a | 2338 | htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE; |
67a4f2b7 AO |
2339 | h->got.offset = (bfd_vma) -2; |
2340 | } | |
2341 | if (! GOT_TLS_GDESC_P (tls_type) | |
2342 | || GOT_TLS_GD_P (tls_type)) | |
2343 | { | |
6de2ae4a | 2344 | s = htab->elf.sgot; |
67a4f2b7 AO |
2345 | h->got.offset = s->size; |
2346 | s->size += GOT_ENTRY_SIZE; | |
2347 | if (GOT_TLS_GD_P (tls_type)) | |
2348 | s->size += GOT_ENTRY_SIZE; | |
2349 | } | |
c434dee6 | 2350 | dyn = htab->elf.dynamic_sections_created; |
bffbf940 JJ |
2351 | /* R_X86_64_TLSGD needs one dynamic relocation if local symbol |
2352 | and two if global. | |
2353 | R_X86_64_GOTTPOFF needs one dynamic relocation. */ | |
67a4f2b7 | 2354 | if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
bffbf940 | 2355 | || tls_type == GOT_TLS_IE) |
351f65ca | 2356 | htab->elf.srelgot->size += bed->s->sizeof_rela; |
67a4f2b7 | 2357 | else if (GOT_TLS_GD_P (tls_type)) |
351f65ca | 2358 | htab->elf.srelgot->size += 2 * bed->s->sizeof_rela; |
67a4f2b7 AO |
2359 | else if (! GOT_TLS_GDESC_P (tls_type) |
2360 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2361 | || h->root.type != bfd_link_hash_undefweak) | |
27482721 AJ |
2362 | && (info->shared |
2363 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
351f65ca | 2364 | htab->elf.srelgot->size += bed->s->sizeof_rela; |
67a4f2b7 AO |
2365 | if (GOT_TLS_GDESC_P (tls_type)) |
2366 | { | |
351f65ca | 2367 | htab->elf.srelplt->size += bed->s->sizeof_rela; |
67a4f2b7 AO |
2368 | htab->tlsdesc_plt = (bfd_vma) -1; |
2369 | } | |
c434dee6 AJ |
2370 | } |
2371 | else | |
2372 | h->got.offset = (bfd_vma) -1; | |
2373 | ||
c434dee6 | 2374 | if (eh->dyn_relocs == NULL) |
b34976b6 | 2375 | return TRUE; |
c434dee6 AJ |
2376 | |
2377 | /* In the shared -Bsymbolic case, discard space allocated for | |
2378 | dynamic pc-relative relocs against symbols which turn out to be | |
2379 | defined in regular objects. For the normal shared case, discard | |
2380 | space for pc-relative relocs that have become local due to symbol | |
2381 | visibility changes. */ | |
2382 | ||
2383 | if (info->shared) | |
2384 | { | |
27482721 AJ |
2385 | /* Relocs that use pc_count are those that appear on a call |
2386 | insn, or certain REL relocs that can generated via assembly. | |
2387 | We want calls to protected symbols to resolve directly to the | |
2388 | function rather than going via the plt. If people want | |
2389 | function pointer comparisons to work as expected then they | |
2390 | should avoid writing weird assembly. */ | |
2391 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
c434dee6 | 2392 | { |
e03a8ed8 | 2393 | struct elf_dyn_relocs **pp; |
c434dee6 AJ |
2394 | |
2395 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2396 | { | |
2397 | p->count -= p->pc_count; | |
2398 | p->pc_count = 0; | |
2399 | if (p->count == 0) | |
2400 | *pp = p->next; | |
2401 | else | |
2402 | pp = &p->next; | |
2403 | } | |
2404 | } | |
4e795f50 AM |
2405 | |
2406 | /* Also discard relocs on undefined weak syms with non-default | |
2407 | visibility. */ | |
22d606e9 | 2408 | if (eh->dyn_relocs != NULL |
4e795f50 | 2409 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
2410 | { |
2411 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2412 | eh->dyn_relocs = NULL; | |
2413 | ||
2414 | /* Make sure undefined weak symbols are output as a dynamic | |
2415 | symbol in PIEs. */ | |
2416 | else if (h->dynindx == -1 | |
d8045f23 NC |
2417 | && ! h->forced_local |
2418 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2419 | return FALSE; | |
22d606e9 | 2420 | } |
cbe950e9 | 2421 | |
d8045f23 | 2422 | } |
d40d037c | 2423 | else if (ELIMINATE_COPY_RELOCS) |
c434dee6 AJ |
2424 | { |
2425 | /* For the non-shared case, discard space for relocs against | |
2426 | symbols which turn out to need copy relocs or are not | |
2427 | dynamic. */ | |
2428 | ||
f5385ebf AM |
2429 | if (!h->non_got_ref |
2430 | && ((h->def_dynamic | |
2431 | && !h->def_regular) | |
c434dee6 AJ |
2432 | || (htab->elf.dynamic_sections_created |
2433 | && (h->root.type == bfd_link_hash_undefweak | |
2434 | || h->root.type == bfd_link_hash_undefined)))) | |
2435 | { | |
2436 | /* Make sure this symbol is output as a dynamic symbol. | |
2437 | Undefined weak syms won't yet be marked as dynamic. */ | |
2438 | if (h->dynindx == -1 | |
d8045f23 NC |
2439 | && ! h->forced_local |
2440 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2441 | return FALSE; | |
c434dee6 AJ |
2442 | |
2443 | /* If that succeeded, we know we'll be keeping all the | |
2444 | relocs. */ | |
2445 | if (h->dynindx != -1) | |
2446 | goto keep; | |
2447 | } | |
2448 | ||
2449 | eh->dyn_relocs = NULL; | |
2450 | ||
2451 | keep: ; | |
2452 | } | |
2453 | ||
2454 | /* Finally, allocate space. */ | |
2455 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2456 | { | |
e7c33416 NC |
2457 | asection * sreloc; |
2458 | ||
cbe950e9 | 2459 | sreloc = elf_section_data (p->sec)->sreloc; |
e7c33416 NC |
2460 | |
2461 | BFD_ASSERT (sreloc != NULL); | |
2462 | ||
351f65ca | 2463 | sreloc->size += p->count * bed->s->sizeof_rela; |
c434dee6 AJ |
2464 | } |
2465 | ||
b34976b6 | 2466 | return TRUE; |
c434dee6 AJ |
2467 | } |
2468 | ||
c25bc9fc L |
2469 | /* Allocate space in .plt, .got and associated reloc sections for |
2470 | local dynamic relocs. */ | |
2471 | ||
2472 | static bfd_boolean | |
351f65ca | 2473 | elf_x86_64_allocate_local_dynrelocs (void **slot, void *inf) |
c25bc9fc L |
2474 | { |
2475 | struct elf_link_hash_entry *h | |
2476 | = (struct elf_link_hash_entry *) *slot; | |
2477 | ||
2478 | if (h->type != STT_GNU_IFUNC | |
2479 | || !h->def_regular | |
2480 | || !h->ref_regular | |
2481 | || !h->forced_local | |
2482 | || h->root.type != bfd_link_hash_defined) | |
2483 | abort (); | |
2484 | ||
351f65ca | 2485 | return elf_x86_64_allocate_dynrelocs (h, inf); |
c25bc9fc L |
2486 | } |
2487 | ||
c434dee6 AJ |
2488 | /* Find any dynamic relocs that apply to read-only sections. */ |
2489 | ||
b34976b6 | 2490 | static bfd_boolean |
351f65ca L |
2491 | elf_x86_64_readonly_dynrelocs (struct elf_link_hash_entry *h, |
2492 | void * inf) | |
c434dee6 | 2493 | { |
351f65ca | 2494 | struct elf_x86_64_link_hash_entry *eh; |
e03a8ed8 | 2495 | struct elf_dyn_relocs *p; |
c434dee6 | 2496 | |
aa715242 L |
2497 | /* Skip local IFUNC symbols. */ |
2498 | if (h->forced_local && h->type == STT_GNU_IFUNC) | |
2499 | return TRUE; | |
2500 | ||
351f65ca | 2501 | eh = (struct elf_x86_64_link_hash_entry *) h; |
c434dee6 AJ |
2502 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
2503 | { | |
2504 | asection *s = p->sec->output_section; | |
2505 | ||
2506 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2507 | { | |
2508 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2509 | ||
2510 | info->flags |= DF_TEXTREL; | |
2511 | ||
b70321a2 L |
2512 | if (info->warn_shared_textrel && info->shared) |
2513 | info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"), | |
2514 | p->sec->owner, h->root.root.string, | |
2515 | p->sec); | |
2516 | ||
c434dee6 | 2517 | /* Not an error, just cut short the traversal. */ |
b34976b6 | 2518 | return FALSE; |
c434dee6 AJ |
2519 | } |
2520 | } | |
b34976b6 | 2521 | return TRUE; |
c434dee6 AJ |
2522 | } |
2523 | ||
70256ad8 AJ |
2524 | /* Set the sizes of the dynamic sections. */ |
2525 | ||
b34976b6 | 2526 | static bfd_boolean |
351f65ca L |
2527 | elf_x86_64_size_dynamic_sections (bfd *output_bfd, |
2528 | struct bfd_link_info *info) | |
70256ad8 | 2529 | { |
351f65ca | 2530 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
2531 | bfd *dynobj; |
2532 | asection *s; | |
b34976b6 | 2533 | bfd_boolean relocs; |
c434dee6 | 2534 | bfd *ibfd; |
351f65ca | 2535 | const struct elf_backend_data *bed; |
70256ad8 | 2536 | |
351f65ca | 2537 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2538 | if (htab == NULL) |
2539 | return FALSE; | |
351f65ca | 2540 | bed = get_elf_backend_data (output_bfd); |
4dfe6ac6 | 2541 | |
c434dee6 AJ |
2542 | dynobj = htab->elf.dynobj; |
2543 | if (dynobj == NULL) | |
2544 | abort (); | |
70256ad8 | 2545 | |
c434dee6 | 2546 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
2547 | { |
2548 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 2549 | if (info->executable) |
70256ad8 AJ |
2550 | { |
2551 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
c434dee6 AJ |
2552 | if (s == NULL) |
2553 | abort (); | |
351f65ca L |
2554 | s->size = htab->dynamic_interpreter_size; |
2555 | s->contents = (unsigned char *) htab->dynamic_interpreter; | |
70256ad8 AJ |
2556 | } |
2557 | } | |
70256ad8 | 2558 | |
c434dee6 AJ |
2559 | /* Set up .got offsets for local syms, and space for local dynamic |
2560 | relocs. */ | |
2561 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
70256ad8 | 2562 | { |
c434dee6 AJ |
2563 | bfd_signed_vma *local_got; |
2564 | bfd_signed_vma *end_local_got; | |
bffbf940 | 2565 | char *local_tls_type; |
67a4f2b7 | 2566 | bfd_vma *local_tlsdesc_gotent; |
c434dee6 AJ |
2567 | bfd_size_type locsymcount; |
2568 | Elf_Internal_Shdr *symtab_hdr; | |
2569 | asection *srel; | |
70256ad8 | 2570 | |
0ffa91dd | 2571 | if (! is_x86_64_elf (ibfd)) |
70256ad8 AJ |
2572 | continue; |
2573 | ||
c434dee6 | 2574 | for (s = ibfd->sections; s != NULL; s = s->next) |
70256ad8 | 2575 | { |
e03a8ed8 | 2576 | struct elf_dyn_relocs *p; |
c434dee6 | 2577 | |
e03a8ed8 | 2578 | for (p = (struct elf_dyn_relocs *) |
e81d3500 | 2579 | (elf_section_data (s)->local_dynrel); |
c434dee6 AJ |
2580 | p != NULL; |
2581 | p = p->next) | |
70256ad8 | 2582 | { |
c434dee6 AJ |
2583 | if (!bfd_is_abs_section (p->sec) |
2584 | && bfd_is_abs_section (p->sec->output_section)) | |
2585 | { | |
2586 | /* Input section has been discarded, either because | |
2587 | it is a copy of a linkonce section or due to | |
2588 | linker script /DISCARD/, so we'll be discarding | |
2589 | the relocs too. */ | |
2590 | } | |
2591 | else if (p->count != 0) | |
2592 | { | |
2593 | srel = elf_section_data (p->sec)->sreloc; | |
351f65ca | 2594 | srel->size += p->count * bed->s->sizeof_rela; |
4b819e1f L |
2595 | if ((p->sec->output_section->flags & SEC_READONLY) != 0 |
2596 | && (info->flags & DF_TEXTREL) == 0) | |
b70321a2 L |
2597 | { |
2598 | info->flags |= DF_TEXTREL; | |
2599 | if (info->warn_shared_textrel && info->shared) | |
2600 | info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"), | |
2601 | p->sec->owner, p->sec); | |
b70321a2 | 2602 | } |
c434dee6 | 2603 | } |
70256ad8 AJ |
2604 | } |
2605 | } | |
c434dee6 AJ |
2606 | |
2607 | local_got = elf_local_got_refcounts (ibfd); | |
2608 | if (!local_got) | |
2609 | continue; | |
2610 | ||
0ffa91dd | 2611 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c434dee6 AJ |
2612 | locsymcount = symtab_hdr->sh_info; |
2613 | end_local_got = local_got + locsymcount; | |
351f65ca L |
2614 | local_tls_type = elf_x86_64_local_got_tls_type (ibfd); |
2615 | local_tlsdesc_gotent = elf_x86_64_local_tlsdesc_gotent (ibfd); | |
6de2ae4a L |
2616 | s = htab->elf.sgot; |
2617 | srel = htab->elf.srelgot; | |
67a4f2b7 AO |
2618 | for (; local_got < end_local_got; |
2619 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
70256ad8 | 2620 | { |
67a4f2b7 | 2621 | *local_tlsdesc_gotent = (bfd_vma) -1; |
c434dee6 | 2622 | if (*local_got > 0) |
70256ad8 | 2623 | { |
67a4f2b7 AO |
2624 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2625 | { | |
6de2ae4a | 2626 | *local_tlsdesc_gotent = htab->elf.sgotplt->size |
351f65ca | 2627 | - elf_x86_64_compute_jump_table_size (htab); |
6de2ae4a | 2628 | htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE; |
67a4f2b7 AO |
2629 | *local_got = (bfd_vma) -2; |
2630 | } | |
2631 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2632 | || GOT_TLS_GD_P (*local_tls_type)) | |
2633 | { | |
2634 | *local_got = s->size; | |
2635 | s->size += GOT_ENTRY_SIZE; | |
2636 | if (GOT_TLS_GD_P (*local_tls_type)) | |
2637 | s->size += GOT_ENTRY_SIZE; | |
2638 | } | |
bffbf940 | 2639 | if (info->shared |
67a4f2b7 | 2640 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
bffbf940 | 2641 | || *local_tls_type == GOT_TLS_IE) |
67a4f2b7 AO |
2642 | { |
2643 | if (GOT_TLS_GDESC_P (*local_tls_type)) | |
2644 | { | |
6de2ae4a | 2645 | htab->elf.srelplt->size |
351f65ca | 2646 | += bed->s->sizeof_rela; |
67a4f2b7 AO |
2647 | htab->tlsdesc_plt = (bfd_vma) -1; |
2648 | } | |
2649 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2650 | || GOT_TLS_GD_P (*local_tls_type)) | |
351f65ca | 2651 | srel->size += bed->s->sizeof_rela; |
67a4f2b7 | 2652 | } |
70256ad8 AJ |
2653 | } |
2654 | else | |
c434dee6 AJ |
2655 | *local_got = (bfd_vma) -1; |
2656 | } | |
2657 | } | |
70256ad8 | 2658 | |
bffbf940 JJ |
2659 | if (htab->tls_ld_got.refcount > 0) |
2660 | { | |
2661 | /* Allocate 2 got entries and 1 dynamic reloc for R_X86_64_TLSLD | |
2662 | relocs. */ | |
6de2ae4a L |
2663 | htab->tls_ld_got.offset = htab->elf.sgot->size; |
2664 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
351f65ca | 2665 | htab->elf.srelgot->size += bed->s->sizeof_rela; |
bffbf940 JJ |
2666 | } |
2667 | else | |
2668 | htab->tls_ld_got.offset = -1; | |
2669 | ||
c434dee6 AJ |
2670 | /* Allocate global sym .plt and .got entries, and space for global |
2671 | sym dynamic relocs. */ | |
351f65ca | 2672 | elf_link_hash_traverse (&htab->elf, elf_x86_64_allocate_dynrelocs, |
eb4ff4d6 | 2673 | info); |
c434dee6 | 2674 | |
c25bc9fc L |
2675 | /* Allocate .plt and .got entries, and space for local symbols. */ |
2676 | htab_traverse (htab->loc_hash_table, | |
351f65ca | 2677 | elf_x86_64_allocate_local_dynrelocs, |
c25bc9fc L |
2678 | info); |
2679 | ||
67a4f2b7 AO |
2680 | /* For every jump slot reserved in the sgotplt, reloc_count is |
2681 | incremented. However, when we reserve space for TLS descriptors, | |
2682 | it's not incremented, so in order to compute the space reserved | |
2683 | for them, it suffices to multiply the reloc count by the jump | |
2684 | slot size. */ | |
6de2ae4a | 2685 | if (htab->elf.srelplt) |
67a4f2b7 | 2686 | htab->sgotplt_jump_table_size |
351f65ca | 2687 | = elf_x86_64_compute_jump_table_size (htab); |
67a4f2b7 AO |
2688 | |
2689 | if (htab->tlsdesc_plt) | |
2690 | { | |
2691 | /* If we're not using lazy TLS relocations, don't generate the | |
2692 | PLT and GOT entries they require. */ | |
2693 | if ((info->flags & DF_BIND_NOW)) | |
2694 | htab->tlsdesc_plt = 0; | |
2695 | else | |
2696 | { | |
6de2ae4a L |
2697 | htab->tlsdesc_got = htab->elf.sgot->size; |
2698 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
67a4f2b7 AO |
2699 | /* Reserve room for the initial entry. |
2700 | FIXME: we could probably do away with it in this case. */ | |
6de2ae4a L |
2701 | if (htab->elf.splt->size == 0) |
2702 | htab->elf.splt->size += PLT_ENTRY_SIZE; | |
2703 | htab->tlsdesc_plt = htab->elf.splt->size; | |
2704 | htab->elf.splt->size += PLT_ENTRY_SIZE; | |
67a4f2b7 AO |
2705 | } |
2706 | } | |
2707 | ||
a7b16ceb L |
2708 | if (htab->elf.sgotplt) |
2709 | { | |
e28df02b L |
2710 | struct elf_link_hash_entry *got; |
2711 | got = elf_link_hash_lookup (elf_hash_table (info), | |
2712 | "_GLOBAL_OFFSET_TABLE_", | |
2713 | FALSE, FALSE, FALSE); | |
2714 | ||
a7b16ceb | 2715 | /* Don't allocate .got.plt section if there are no GOT nor PLT |
e28df02b L |
2716 | entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ |
2717 | if ((got == NULL | |
2718 | || !got->ref_regular_nonweak) | |
2719 | && (htab->elf.sgotplt->size | |
2720 | == get_elf_backend_data (output_bfd)->got_header_size) | |
a7b16ceb L |
2721 | && (htab->elf.splt == NULL |
2722 | || htab->elf.splt->size == 0) | |
2723 | && (htab->elf.sgot == NULL | |
2724 | || htab->elf.sgot->size == 0) | |
2725 | && (htab->elf.iplt == NULL | |
2726 | || htab->elf.iplt->size == 0) | |
2727 | && (htab->elf.igotplt == NULL | |
2728 | || htab->elf.igotplt->size == 0)) | |
2729 | htab->elf.sgotplt->size = 0; | |
2730 | } | |
2731 | ||
c434dee6 AJ |
2732 | /* We now have determined the sizes of the various dynamic sections. |
2733 | Allocate memory for them. */ | |
b34976b6 | 2734 | relocs = FALSE; |
c434dee6 AJ |
2735 | for (s = dynobj->sections; s != NULL; s = s->next) |
2736 | { | |
2737 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2738 | continue; | |
2739 | ||
6de2ae4a L |
2740 | if (s == htab->elf.splt |
2741 | || s == htab->elf.sgot | |
2742 | || s == htab->elf.sgotplt | |
2743 | || s == htab->elf.iplt | |
2744 | || s == htab->elf.igotplt | |
75ff4589 | 2745 | || s == htab->sdynbss) |
c434dee6 AJ |
2746 | { |
2747 | /* Strip this section if we don't need it; see the | |
2748 | comment below. */ | |
2749 | } | |
0112cd26 | 2750 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
c434dee6 | 2751 | { |
6de2ae4a | 2752 | if (s->size != 0 && s != htab->elf.srelplt) |
b34976b6 | 2753 | relocs = TRUE; |
c434dee6 AJ |
2754 | |
2755 | /* We use the reloc_count field as a counter if we need | |
2756 | to copy relocs into the output file. */ | |
6de2ae4a | 2757 | if (s != htab->elf.srelplt) |
67a4f2b7 | 2758 | s->reloc_count = 0; |
70256ad8 | 2759 | } |
c434dee6 | 2760 | else |
70256ad8 AJ |
2761 | { |
2762 | /* It's not one of our sections, so don't allocate space. */ | |
2763 | continue; | |
2764 | } | |
2765 | ||
eea6121a | 2766 | if (s->size == 0) |
70256ad8 | 2767 | { |
c434dee6 AJ |
2768 | /* If we don't need this section, strip it from the |
2769 | output file. This is mostly to handle .rela.bss and | |
2770 | .rela.plt. We must create both sections in | |
2771 | create_dynamic_sections, because they must be created | |
2772 | before the linker maps input sections to output | |
2773 | sections. The linker does that before | |
2774 | adjust_dynamic_symbol is called, and it is that | |
2775 | function which decides whether anything needs to go | |
2776 | into these sections. */ | |
2777 | ||
8423293d | 2778 | s->flags |= SEC_EXCLUDE; |
70256ad8 AJ |
2779 | continue; |
2780 | } | |
2781 | ||
c456f082 AM |
2782 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2783 | continue; | |
2784 | ||
70256ad8 AJ |
2785 | /* Allocate memory for the section contents. We use bfd_zalloc |
2786 | here in case unused entries are not reclaimed before the | |
2787 | section's contents are written out. This should not happen, | |
2788 | but this way if it does, we get a R_X86_64_NONE reloc instead | |
2789 | of garbage. */ | |
eea6121a | 2790 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c434dee6 | 2791 | if (s->contents == NULL) |
b34976b6 | 2792 | return FALSE; |
70256ad8 AJ |
2793 | } |
2794 | ||
e41b3a13 JJ |
2795 | if (htab->plt_eh_frame != NULL |
2796 | && htab->elf.splt != NULL | |
2797 | && htab->elf.splt->size != 0 | |
2798 | && (htab->elf.splt->flags & SEC_EXCLUDE) == 0) | |
2799 | bfd_put_32 (dynobj, htab->elf.splt->size, | |
2800 | htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET); | |
2801 | ||
c434dee6 | 2802 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
2803 | { |
2804 | /* Add some entries to the .dynamic section. We fill in the | |
351f65ca | 2805 | values later, in elf_x86_64_finish_dynamic_sections, but we |
70256ad8 | 2806 | must add the entries now so that we get the correct size for |
407443a3 | 2807 | the .dynamic section. The DT_DEBUG entry is filled in by the |
70256ad8 | 2808 | dynamic linker and used by the debugger. */ |
dc810e39 | 2809 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2810 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2811 | |
36af4a4e | 2812 | if (info->executable) |
70256ad8 | 2813 | { |
dc810e39 | 2814 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2815 | return FALSE; |
70256ad8 AJ |
2816 | } |
2817 | ||
6de2ae4a | 2818 | if (htab->elf.splt->size != 0) |
70256ad8 | 2819 | { |
dc810e39 AM |
2820 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2821 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2822 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2823 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2824 | return FALSE; |
67a4f2b7 AO |
2825 | |
2826 | if (htab->tlsdesc_plt | |
2827 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
2828 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
2829 | return FALSE; | |
70256ad8 AJ |
2830 | } |
2831 | ||
2832 | if (relocs) | |
2833 | { | |
dc810e39 AM |
2834 | if (!add_dynamic_entry (DT_RELA, 0) |
2835 | || !add_dynamic_entry (DT_RELASZ, 0) | |
351f65ca | 2836 | || !add_dynamic_entry (DT_RELAENT, bed->s->sizeof_rela)) |
b34976b6 | 2837 | return FALSE; |
70256ad8 | 2838 | |
c434dee6 AJ |
2839 | /* If any dynamic relocs apply to a read-only section, |
2840 | then we need a DT_TEXTREL entry. */ | |
2841 | if ((info->flags & DF_TEXTREL) == 0) | |
eb4ff4d6 | 2842 | elf_link_hash_traverse (&htab->elf, |
351f65ca | 2843 | elf_x86_64_readonly_dynrelocs, |
eb4ff4d6 | 2844 | info); |
c434dee6 AJ |
2845 | |
2846 | if ((info->flags & DF_TEXTREL) != 0) | |
2847 | { | |
2848 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2849 | return FALSE; |
c434dee6 | 2850 | } |
70256ad8 AJ |
2851 | } |
2852 | } | |
dc810e39 | 2853 | #undef add_dynamic_entry |
70256ad8 | 2854 | |
b34976b6 | 2855 | return TRUE; |
70256ad8 AJ |
2856 | } |
2857 | ||
67a4f2b7 | 2858 | static bfd_boolean |
351f65ca L |
2859 | elf_x86_64_always_size_sections (bfd *output_bfd, |
2860 | struct bfd_link_info *info) | |
67a4f2b7 AO |
2861 | { |
2862 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
2863 | ||
2864 | if (tls_sec) | |
2865 | { | |
2866 | struct elf_link_hash_entry *tlsbase; | |
2867 | ||
2868 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
2869 | "_TLS_MODULE_BASE_", | |
2870 | FALSE, FALSE, FALSE); | |
2871 | ||
2872 | if (tlsbase && tlsbase->type == STT_TLS) | |
2873 | { | |
351f65ca | 2874 | struct elf_x86_64_link_hash_table *htab; |
67a4f2b7 AO |
2875 | struct bfd_link_hash_entry *bh = NULL; |
2876 | const struct elf_backend_data *bed | |
2877 | = get_elf_backend_data (output_bfd); | |
2878 | ||
351f65ca | 2879 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2880 | if (htab == NULL) |
2881 | return FALSE; | |
2882 | ||
67a4f2b7 AO |
2883 | if (!(_bfd_generic_link_add_one_symbol |
2884 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
2885 | tls_sec, 0, NULL, FALSE, | |
2886 | bed->collect, &bh))) | |
2887 | return FALSE; | |
9f03412a | 2888 | |
4dfe6ac6 | 2889 | htab->tls_module_base = bh; |
9f03412a | 2890 | |
67a4f2b7 AO |
2891 | tlsbase = (struct elf_link_hash_entry *)bh; |
2892 | tlsbase->def_regular = 1; | |
2893 | tlsbase->other = STV_HIDDEN; | |
2894 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
2895 | } | |
2896 | } | |
2897 | ||
2898 | return TRUE; | |
2899 | } | |
2900 | ||
9f03412a AO |
2901 | /* _TLS_MODULE_BASE_ needs to be treated especially when linking |
2902 | executables. Rather than setting it to the beginning of the TLS | |
2903 | section, we have to set it to the end. This function may be called | |
2904 | multiple times, it is idempotent. */ | |
2905 | ||
2906 | static void | |
351f65ca | 2907 | elf_x86_64_set_tls_module_base (struct bfd_link_info *info) |
9f03412a | 2908 | { |
351f65ca | 2909 | struct elf_x86_64_link_hash_table *htab; |
9f03412a AO |
2910 | struct bfd_link_hash_entry *base; |
2911 | ||
2912 | if (!info->executable) | |
2913 | return; | |
2914 | ||
351f65ca | 2915 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2916 | if (htab == NULL) |
2917 | return; | |
9f03412a | 2918 | |
4dfe6ac6 NC |
2919 | base = htab->tls_module_base; |
2920 | if (base == NULL) | |
9f03412a AO |
2921 | return; |
2922 | ||
4dfe6ac6 | 2923 | base->u.def.value = htab->elf.tls_size; |
9f03412a AO |
2924 | } |
2925 | ||
bffbf940 JJ |
2926 | /* Return the base VMA address which should be subtracted from real addresses |
2927 | when resolving @dtpoff relocation. | |
2928 | This is PT_TLS segment p_vaddr. */ | |
2929 | ||
2930 | static bfd_vma | |
351f65ca | 2931 | elf_x86_64_dtpoff_base (struct bfd_link_info *info) |
bffbf940 | 2932 | { |
e1918d23 AM |
2933 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2934 | if (elf_hash_table (info)->tls_sec == NULL) | |
bffbf940 | 2935 | return 0; |
e1918d23 | 2936 | return elf_hash_table (info)->tls_sec->vma; |
bffbf940 JJ |
2937 | } |
2938 | ||
2939 | /* Return the relocation value for @tpoff relocation | |
2940 | if STT_TLS virtual address is ADDRESS. */ | |
2941 | ||
2942 | static bfd_vma | |
351f65ca | 2943 | elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address) |
bffbf940 | 2944 | { |
e1918d23 | 2945 | struct elf_link_hash_table *htab = elf_hash_table (info); |
7dc98aea RO |
2946 | const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd); |
2947 | bfd_vma static_tls_size; | |
bffbf940 JJ |
2948 | |
2949 | /* If tls_segment is NULL, we should have signalled an error already. */ | |
e1918d23 | 2950 | if (htab->tls_sec == NULL) |
bffbf940 | 2951 | return 0; |
7dc98aea RO |
2952 | |
2953 | /* Consider special static TLS alignment requirements. */ | |
2954 | static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment); | |
2955 | return address - static_tls_size - htab->tls_sec->vma; | |
bffbf940 JJ |
2956 | } |
2957 | ||
90f487df L |
2958 | /* Is the instruction before OFFSET in CONTENTS a 32bit relative |
2959 | branch? */ | |
2960 | ||
2961 | static bfd_boolean | |
2962 | is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset) | |
2963 | { | |
2964 | /* Opcode Instruction | |
2965 | 0xe8 call | |
2966 | 0xe9 jump | |
2967 | 0x0f 0x8x conditional jump */ | |
2968 | return ((offset > 0 | |
2969 | && (contents [offset - 1] == 0xe8 | |
2970 | || contents [offset - 1] == 0xe9)) | |
2971 | || (offset > 1 | |
2972 | && contents [offset - 2] == 0x0f | |
2973 | && (contents [offset - 1] & 0xf0) == 0x80)); | |
2974 | } | |
2975 | ||
8d88c4ca NC |
2976 | /* Relocate an x86_64 ELF section. */ |
2977 | ||
b34976b6 | 2978 | static bfd_boolean |
351f65ca L |
2979 | elf_x86_64_relocate_section (bfd *output_bfd, |
2980 | struct bfd_link_info *info, | |
2981 | bfd *input_bfd, | |
2982 | asection *input_section, | |
2983 | bfd_byte *contents, | |
2984 | Elf_Internal_Rela *relocs, | |
2985 | Elf_Internal_Sym *local_syms, | |
2986 | asection **local_sections) | |
8d88c4ca | 2987 | { |
351f65ca | 2988 | struct elf_x86_64_link_hash_table *htab; |
8d88c4ca NC |
2989 | Elf_Internal_Shdr *symtab_hdr; |
2990 | struct elf_link_hash_entry **sym_hashes; | |
2991 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 2992 | bfd_vma *local_tlsdesc_gotents; |
c434dee6 | 2993 | Elf_Internal_Rela *rel; |
8d88c4ca NC |
2994 | Elf_Internal_Rela *relend; |
2995 | ||
0ffa91dd NC |
2996 | BFD_ASSERT (is_x86_64_elf (input_bfd)); |
2997 | ||
351f65ca | 2998 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2999 | if (htab == NULL) |
3000 | return FALSE; | |
0ffa91dd | 3001 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
8d88c4ca NC |
3002 | sym_hashes = elf_sym_hashes (input_bfd); |
3003 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
351f65ca | 3004 | local_tlsdesc_gotents = elf_x86_64_local_tlsdesc_gotent (input_bfd); |
8d88c4ca | 3005 | |
351f65ca | 3006 | elf_x86_64_set_tls_module_base (info); |
9f03412a | 3007 | |
c434dee6 | 3008 | rel = relocs; |
8d88c4ca | 3009 | relend = relocs + input_section->reloc_count; |
c434dee6 | 3010 | for (; rel < relend; rel++) |
8d88c4ca | 3011 | { |
bffbf940 | 3012 | unsigned int r_type; |
8d88c4ca NC |
3013 | reloc_howto_type *howto; |
3014 | unsigned long r_symndx; | |
3015 | struct elf_link_hash_entry *h; | |
3016 | Elf_Internal_Sym *sym; | |
3017 | asection *sec; | |
67a4f2b7 | 3018 | bfd_vma off, offplt; |
8d88c4ca | 3019 | bfd_vma relocation; |
b34976b6 | 3020 | bfd_boolean unresolved_reloc; |
8d88c4ca | 3021 | bfd_reloc_status_type r; |
bffbf940 | 3022 | int tls_type; |
cbe950e9 | 3023 | asection *base_got; |
8d88c4ca | 3024 | |
351f65ca | 3025 | r_type = ELF32_R_TYPE (rel->r_info); |
fe4770f4 AJ |
3026 | if (r_type == (int) R_X86_64_GNU_VTINHERIT |
3027 | || r_type == (int) R_X86_64_GNU_VTENTRY) | |
3028 | continue; | |
8d88c4ca | 3029 | |
bffbf940 | 3030 | if (r_type >= R_X86_64_max) |
8da6118f KH |
3031 | { |
3032 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3033 | return FALSE; |
8da6118f | 3034 | } |
8d88c4ca | 3035 | |
d7921315 L |
3036 | if (r_type != (int) R_X86_64_32 |
3037 | || ABI_64_P (output_bfd)) | |
3038 | howto = x86_64_elf_howto_table + r_type; | |
3039 | else | |
3040 | howto = (x86_64_elf_howto_table | |
3041 | + ARRAY_SIZE (x86_64_elf_howto_table) - 1); | |
351f65ca | 3042 | r_symndx = htab->r_sym (rel->r_info); |
8d88c4ca NC |
3043 | h = NULL; |
3044 | sym = NULL; | |
3045 | sec = NULL; | |
b34976b6 | 3046 | unresolved_reloc = FALSE; |
8d88c4ca | 3047 | if (r_symndx < symtab_hdr->sh_info) |
8da6118f KH |
3048 | { |
3049 | sym = local_syms + r_symndx; | |
3050 | sec = local_sections[r_symndx]; | |
c434dee6 | 3051 | |
c25bc9fc L |
3052 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, |
3053 | &sec, rel); | |
3054 | ||
3055 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
1f85278f | 3056 | if (!info->relocatable |
351f65ca | 3057 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
c25bc9fc | 3058 | { |
351f65ca L |
3059 | h = elf_x86_64_get_local_sym_hash (htab, input_bfd, |
3060 | rel, FALSE); | |
c25bc9fc L |
3061 | if (h == NULL) |
3062 | abort (); | |
3063 | ||
3064 | /* Set STT_GNU_IFUNC symbol value. */ | |
3065 | h->root.u.def.value = sym->st_value; | |
3066 | h->root.u.def.section = sec; | |
3067 | } | |
8da6118f | 3068 | } |
8d88c4ca | 3069 | else |
8da6118f | 3070 | { |
c9736ba0 | 3071 | bfd_boolean warned ATTRIBUTE_UNUSED; |
c434dee6 | 3072 | |
b2a8e766 AM |
3073 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3074 | r_symndx, symtab_hdr, sym_hashes, | |
3075 | h, sec, relocation, | |
3076 | unresolved_reloc, warned); | |
8da6118f | 3077 | } |
ab96bf03 AM |
3078 | |
3079 | if (sec != NULL && elf_discarded_section (sec)) | |
0672748a L |
3080 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
3081 | rel, relend, howto, contents); | |
ab96bf03 AM |
3082 | |
3083 | if (info->relocatable) | |
3084 | continue; | |
3085 | ||
cbe950e9 L |
3086 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
3087 | it here if it is defined in a non-shared object. */ | |
3088 | if (h != NULL | |
3089 | && h->type == STT_GNU_IFUNC | |
3090 | && h->def_regular) | |
3091 | { | |
3092 | asection *plt; | |
3093 | bfd_vma plt_index; | |
4c544807 | 3094 | const char *name; |
cbe950e9 L |
3095 | |
3096 | if ((input_section->flags & SEC_ALLOC) == 0 | |
3097 | || h->plt.offset == (bfd_vma) -1) | |
3098 | abort (); | |
3099 | ||
3100 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
6de2ae4a | 3101 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
cbe950e9 L |
3102 | relocation = (plt->output_section->vma |
3103 | + plt->output_offset + h->plt.offset); | |
3104 | ||
3105 | switch (r_type) | |
3106 | { | |
3107 | default: | |
4c544807 L |
3108 | if (h->root.root.string) |
3109 | name = h->root.root.string; | |
3110 | else | |
3111 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3112 | NULL); | |
cbe950e9 L |
3113 | (*_bfd_error_handler) |
3114 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
3115 | "symbol `%s' isn't handled by %s"), input_bfd, | |
3116 | x86_64_elf_howto_table[r_type].name, | |
4c544807 | 3117 | name, __FUNCTION__); |
cbe950e9 L |
3118 | bfd_set_error (bfd_error_bad_value); |
3119 | return FALSE; | |
3120 | ||
3121 | case R_X86_64_32S: | |
710ab287 | 3122 | if (info->shared) |
cbe950e9 | 3123 | abort (); |
710ab287 L |
3124 | goto do_relocation; |
3125 | ||
248775ba L |
3126 | case R_X86_64_32: |
3127 | if (ABI_64_P (output_bfd)) | |
3128 | goto do_relocation; | |
17672001 | 3129 | /* FALLTHROUGH */ |
710ab287 L |
3130 | case R_X86_64_64: |
3131 | if (rel->r_addend != 0) | |
3132 | { | |
4c544807 L |
3133 | if (h->root.root.string) |
3134 | name = h->root.root.string; | |
3135 | else | |
3136 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
3137 | sym, NULL); | |
710ab287 L |
3138 | (*_bfd_error_handler) |
3139 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
3140 | "symbol `%s' has non-zero addend: %d"), | |
3141 | input_bfd, x86_64_elf_howto_table[r_type].name, | |
4c544807 | 3142 | name, rel->r_addend); |
710ab287 L |
3143 | bfd_set_error (bfd_error_bad_value); |
3144 | return FALSE; | |
3145 | } | |
3146 | ||
3147 | /* Generate dynamic relcoation only when there is a | |
3148 | non-GOF reference in a shared object. */ | |
3149 | if (info->shared && h->non_got_ref) | |
3150 | { | |
3151 | Elf_Internal_Rela outrel; | |
710ab287 L |
3152 | asection *sreloc; |
3153 | ||
c25bc9fc L |
3154 | /* Need a dynamic relocation to get the real function |
3155 | address. */ | |
710ab287 L |
3156 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, |
3157 | info, | |
3158 | input_section, | |
3159 | rel->r_offset); | |
3160 | if (outrel.r_offset == (bfd_vma) -1 | |
3161 | || outrel.r_offset == (bfd_vma) -2) | |
3162 | abort (); | |
3163 | ||
3164 | outrel.r_offset += (input_section->output_section->vma | |
3165 | + input_section->output_offset); | |
3166 | ||
3167 | if (h->dynindx == -1 | |
44c4ea11 L |
3168 | || h->forced_local |
3169 | || info->executable) | |
710ab287 L |
3170 | { |
3171 | /* This symbol is resolved locally. */ | |
351f65ca | 3172 | outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE); |
710ab287 L |
3173 | outrel.r_addend = (h->root.u.def.value |
3174 | + h->root.u.def.section->output_section->vma | |
3175 | + h->root.u.def.section->output_offset); | |
3176 | } | |
3177 | else | |
3178 | { | |
351f65ca | 3179 | outrel.r_info = htab->r_info (h->dynindx, r_type); |
710ab287 L |
3180 | outrel.r_addend = 0; |
3181 | } | |
3182 | ||
6de2ae4a | 3183 | sreloc = htab->elf.irelifunc; |
351f65ca | 3184 | elf_append_rela (output_bfd, sreloc, &outrel); |
710ab287 L |
3185 | |
3186 | /* If this reloc is against an external symbol, we | |
3187 | do not want to fiddle with the addend. Otherwise, | |
3188 | we need to include the symbol value so that it | |
3189 | becomes an addend for the dynamic reloc. For an | |
3190 | internal symbol, we have updated addend. */ | |
3191 | continue; | |
3192 | } | |
17672001 | 3193 | /* FALLTHROUGH */ |
cbe950e9 L |
3194 | case R_X86_64_PC32: |
3195 | case R_X86_64_PC64: | |
3196 | case R_X86_64_PLT32: | |
3197 | goto do_relocation; | |
3198 | ||
3199 | case R_X86_64_GOTPCREL: | |
3200 | case R_X86_64_GOTPCREL64: | |
6de2ae4a | 3201 | base_got = htab->elf.sgot; |
cbe950e9 L |
3202 | off = h->got.offset; |
3203 | ||
7afd84dc | 3204 | if (base_got == NULL) |
cbe950e9 L |
3205 | abort (); |
3206 | ||
7afd84dc | 3207 | if (off == (bfd_vma) -1) |
cbe950e9 | 3208 | { |
7afd84dc L |
3209 | /* We can't use h->got.offset here to save state, or |
3210 | even just remember the offset, as finish_dynamic_symbol | |
3211 | would use that as offset into .got. */ | |
cbe950e9 | 3212 | |
6de2ae4a | 3213 | if (htab->elf.splt != NULL) |
7afd84dc L |
3214 | { |
3215 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3216 | off = (plt_index + 3) * GOT_ENTRY_SIZE; | |
6de2ae4a | 3217 | base_got = htab->elf.sgotplt; |
7afd84dc | 3218 | } |
cbe950e9 L |
3219 | else |
3220 | { | |
7afd84dc L |
3221 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; |
3222 | off = plt_index * GOT_ENTRY_SIZE; | |
6de2ae4a | 3223 | base_got = htab->elf.igotplt; |
7afd84dc L |
3224 | } |
3225 | ||
3226 | if (h->dynindx == -1 | |
3227 | || h->forced_local | |
3228 | || info->symbolic) | |
3229 | { | |
3230 | /* This references the local defitionion. We must | |
3231 | initialize this entry in the global offset table. | |
3232 | Since the offset must always be a multiple of 8, | |
3233 | we use the least significant bit to record | |
3234 | whether we have initialized it already. | |
3235 | ||
3236 | When doing a dynamic link, we create a .rela.got | |
3237 | relocation entry to initialize the value. This | |
3238 | is done in the finish_dynamic_symbol routine. */ | |
3239 | if ((off & 1) != 0) | |
3240 | off &= ~1; | |
3241 | else | |
3242 | { | |
3243 | bfd_put_64 (output_bfd, relocation, | |
3244 | base_got->contents + off); | |
3245 | /* Note that this is harmless for the GOTPLT64 | |
3246 | case, as -1 | 1 still is -1. */ | |
3247 | h->got.offset |= 1; | |
3248 | } | |
cbe950e9 L |
3249 | } |
3250 | } | |
3251 | ||
3252 | relocation = (base_got->output_section->vma | |
3253 | + base_got->output_offset + off); | |
3254 | ||
cbe950e9 L |
3255 | goto do_relocation; |
3256 | } | |
3257 | } | |
3258 | ||
70256ad8 AJ |
3259 | /* When generating a shared object, the relocations handled here are |
3260 | copied into the output file to be resolved at run time. */ | |
3261 | switch (r_type) | |
3262 | { | |
3263 | case R_X86_64_GOT32: | |
7b81dfbb | 3264 | case R_X86_64_GOT64: |
70256ad8 AJ |
3265 | /* Relocation is to the entry for this symbol in the global |
3266 | offset table. */ | |
70256ad8 | 3267 | case R_X86_64_GOTPCREL: |
7b81dfbb AJ |
3268 | case R_X86_64_GOTPCREL64: |
3269 | /* Use global offset table entry as symbol value. */ | |
3270 | case R_X86_64_GOTPLT64: | |
3271 | /* This is the same as GOT64 for relocation purposes, but | |
3272 | indicates the existence of a PLT entry. The difficulty is, | |
3273 | that we must calculate the GOT slot offset from the PLT | |
3274 | offset, if this symbol got a PLT entry (it was global). | |
3275 | Additionally if it's computed from the PLT entry, then that | |
3276 | GOT offset is relative to .got.plt, not to .got. */ | |
6de2ae4a | 3277 | base_got = htab->elf.sgot; |
7b81dfbb | 3278 | |
6de2ae4a | 3279 | if (htab->elf.sgot == NULL) |
c434dee6 | 3280 | abort (); |
053579d7 | 3281 | |
51e0a107 | 3282 | if (h != NULL) |
70256ad8 | 3283 | { |
b34976b6 | 3284 | bfd_boolean dyn; |
c434dee6 AJ |
3285 | |
3286 | off = h->got.offset; | |
7b81dfbb AJ |
3287 | if (h->needs_plt |
3288 | && h->plt.offset != (bfd_vma)-1 | |
3289 | && off == (bfd_vma)-1) | |
3290 | { | |
3291 | /* We can't use h->got.offset here to save | |
3292 | state, or even just remember the offset, as | |
3293 | finish_dynamic_symbol would use that as offset into | |
3294 | .got. */ | |
3295 | bfd_vma plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3296 | off = (plt_index + 3) * GOT_ENTRY_SIZE; | |
6de2ae4a | 3297 | base_got = htab->elf.sgotplt; |
7b81dfbb AJ |
3298 | } |
3299 | ||
c434dee6 | 3300 | dyn = htab->elf.dynamic_sections_created; |
51e0a107 | 3301 | |
27482721 | 3302 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
51e0a107 | 3303 | || (info->shared |
27482721 | 3304 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4bc6e03a AJ |
3305 | || (ELF_ST_VISIBILITY (h->other) |
3306 | && h->root.type == bfd_link_hash_undefweak)) | |
51e0a107 JH |
3307 | { |
3308 | /* This is actually a static link, or it is a -Bsymbolic | |
3309 | link and the symbol is defined locally, or the symbol | |
407443a3 | 3310 | was forced to be local because of a version file. We |
51e0a107 JH |
3311 | must initialize this entry in the global offset table. |
3312 | Since the offset must always be a multiple of 8, we | |
3313 | use the least significant bit to record whether we | |
3314 | have initialized it already. | |
3315 | ||
3316 | When doing a dynamic link, we create a .rela.got | |
407443a3 AJ |
3317 | relocation entry to initialize the value. This is |
3318 | done in the finish_dynamic_symbol routine. */ | |
51e0a107 JH |
3319 | if ((off & 1) != 0) |
3320 | off &= ~1; | |
3321 | else | |
3322 | { | |
3323 | bfd_put_64 (output_bfd, relocation, | |
7b81dfbb AJ |
3324 | base_got->contents + off); |
3325 | /* Note that this is harmless for the GOTPLT64 case, | |
3326 | as -1 | 1 still is -1. */ | |
51e0a107 JH |
3327 | h->got.offset |= 1; |
3328 | } | |
3329 | } | |
053579d7 | 3330 | else |
b34976b6 | 3331 | unresolved_reloc = FALSE; |
70256ad8 | 3332 | } |
51e0a107 JH |
3333 | else |
3334 | { | |
c434dee6 AJ |
3335 | if (local_got_offsets == NULL) |
3336 | abort (); | |
51e0a107 JH |
3337 | |
3338 | off = local_got_offsets[r_symndx]; | |
3339 | ||
3340 | /* The offset must always be a multiple of 8. We use | |
407443a3 AJ |
3341 | the least significant bit to record whether we have |
3342 | already generated the necessary reloc. */ | |
51e0a107 JH |
3343 | if ((off & 1) != 0) |
3344 | off &= ~1; | |
3345 | else | |
3346 | { | |
c434dee6 | 3347 | bfd_put_64 (output_bfd, relocation, |
7b81dfbb | 3348 | base_got->contents + off); |
51e0a107 JH |
3349 | |
3350 | if (info->shared) | |
3351 | { | |
947216bf | 3352 | asection *s; |
51e0a107 | 3353 | Elf_Internal_Rela outrel; |
70256ad8 | 3354 | |
51e0a107 JH |
3355 | /* We need to generate a R_X86_64_RELATIVE reloc |
3356 | for the dynamic linker. */ | |
6de2ae4a | 3357 | s = htab->elf.srelgot; |
947216bf | 3358 | if (s == NULL) |
c434dee6 | 3359 | abort (); |
51e0a107 | 3360 | |
7b81dfbb AJ |
3361 | outrel.r_offset = (base_got->output_section->vma |
3362 | + base_got->output_offset | |
51e0a107 | 3363 | + off); |
351f65ca | 3364 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
51e0a107 | 3365 | outrel.r_addend = relocation; |
351f65ca | 3366 | elf_append_rela (output_bfd, s, &outrel); |
51e0a107 JH |
3367 | } |
3368 | ||
3369 | local_got_offsets[r_symndx] |= 1; | |
3370 | } | |
51e0a107 | 3371 | } |
6a2bda3f | 3372 | |
c434dee6 AJ |
3373 | if (off >= (bfd_vma) -2) |
3374 | abort (); | |
3375 | ||
7b81dfbb AJ |
3376 | relocation = base_got->output_section->vma |
3377 | + base_got->output_offset + off; | |
3378 | if (r_type != R_X86_64_GOTPCREL && r_type != R_X86_64_GOTPCREL64) | |
6de2ae4a L |
3379 | relocation -= htab->elf.sgotplt->output_section->vma |
3380 | - htab->elf.sgotplt->output_offset; | |
c434dee6 | 3381 | |
70256ad8 AJ |
3382 | break; |
3383 | ||
d6ab8113 JB |
3384 | case R_X86_64_GOTOFF64: |
3385 | /* Relocation is relative to the start of the global offset | |
3386 | table. */ | |
3387 | ||
3388 | /* Check to make sure it isn't a protected function symbol | |
3389 | for shared library since it may not be local when used | |
3390 | as function address. */ | |
3391 | if (info->shared | |
3392 | && h | |
3393 | && h->def_regular | |
3394 | && h->type == STT_FUNC | |
3395 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
3396 | { | |
3397 | (*_bfd_error_handler) | |
3398 | (_("%B: relocation R_X86_64_GOTOFF64 against protected function `%s' can not be used when making a shared object"), | |
3399 | input_bfd, h->root.root.string); | |
3400 | bfd_set_error (bfd_error_bad_value); | |
3401 | return FALSE; | |
3402 | } | |
3403 | ||
3404 | /* Note that sgot is not involved in this | |
3405 | calculation. We always want the start of .got.plt. If we | |
3406 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
3407 | permitted by the ABI, we might have to change this | |
3408 | calculation. */ | |
6de2ae4a L |
3409 | relocation -= htab->elf.sgotplt->output_section->vma |
3410 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
3411 | break; |
3412 | ||
3413 | case R_X86_64_GOTPC32: | |
7b81dfbb | 3414 | case R_X86_64_GOTPC64: |
d6ab8113 | 3415 | /* Use global offset table as symbol value. */ |
6de2ae4a L |
3416 | relocation = htab->elf.sgotplt->output_section->vma |
3417 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
3418 | unresolved_reloc = FALSE; |
3419 | break; | |
7b81dfbb AJ |
3420 | |
3421 | case R_X86_64_PLTOFF64: | |
3422 | /* Relocation is PLT entry relative to GOT. For local | |
3423 | symbols it's the symbol itself relative to GOT. */ | |
3424 | if (h != NULL | |
3425 | /* See PLT32 handling. */ | |
3426 | && h->plt.offset != (bfd_vma) -1 | |
6de2ae4a | 3427 | && htab->elf.splt != NULL) |
7b81dfbb | 3428 | { |
6de2ae4a L |
3429 | relocation = (htab->elf.splt->output_section->vma |
3430 | + htab->elf.splt->output_offset | |
7b81dfbb AJ |
3431 | + h->plt.offset); |
3432 | unresolved_reloc = FALSE; | |
3433 | } | |
3434 | ||
6de2ae4a L |
3435 | relocation -= htab->elf.sgotplt->output_section->vma |
3436 | + htab->elf.sgotplt->output_offset; | |
7b81dfbb | 3437 | break; |
d6ab8113 | 3438 | |
70256ad8 AJ |
3439 | case R_X86_64_PLT32: |
3440 | /* Relocation is to the entry for this symbol in the | |
3441 | procedure linkage table. */ | |
3442 | ||
3443 | /* Resolve a PLT32 reloc against a local symbol directly, | |
407443a3 | 3444 | without using the procedure linkage table. */ |
70256ad8 AJ |
3445 | if (h == NULL) |
3446 | break; | |
3447 | ||
c434dee6 | 3448 | if (h->plt.offset == (bfd_vma) -1 |
6de2ae4a | 3449 | || htab->elf.splt == NULL) |
70256ad8 AJ |
3450 | { |
3451 | /* We didn't make a PLT entry for this symbol. This | |
407443a3 AJ |
3452 | happens when statically linking PIC code, or when |
3453 | using -Bsymbolic. */ | |
70256ad8 AJ |
3454 | break; |
3455 | } | |
3456 | ||
6de2ae4a L |
3457 | relocation = (htab->elf.splt->output_section->vma |
3458 | + htab->elf.splt->output_offset | |
70256ad8 | 3459 | + h->plt.offset); |
b34976b6 | 3460 | unresolved_reloc = FALSE; |
70256ad8 AJ |
3461 | break; |
3462 | ||
fd8ab9e5 AJ |
3463 | case R_X86_64_PC8: |
3464 | case R_X86_64_PC16: | |
3465 | case R_X86_64_PC32: | |
6610a52d | 3466 | if (info->shared |
351f65ca | 3467 | && ABI_64_P (output_bfd) |
ba3bee0b | 3468 | && (input_section->flags & SEC_ALLOC) != 0 |
90f487df | 3469 | && (input_section->flags & SEC_READONLY) != 0 |
41bed6dd | 3470 | && h != NULL) |
6610a52d | 3471 | { |
41bed6dd L |
3472 | bfd_boolean fail = FALSE; |
3473 | bfd_boolean branch | |
3474 | = (r_type == R_X86_64_PC32 | |
3475 | && is_32bit_relative_branch (contents, rel->r_offset)); | |
3476 | ||
3477 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
3478 | { | |
3479 | /* Symbol is referenced locally. Make sure it is | |
3480 | defined locally or for a branch. */ | |
3481 | fail = !h->def_regular && !branch; | |
3482 | } | |
90f487df | 3483 | else |
41bed6dd L |
3484 | { |
3485 | /* Symbol isn't referenced locally. We only allow | |
3486 | branch to symbol with non-default visibility. */ | |
3487 | fail = (!branch | |
3488 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT); | |
3489 | } | |
3490 | ||
3491 | if (fail) | |
3492 | { | |
3493 | const char *fmt; | |
3494 | const char *v; | |
3495 | const char *pic = ""; | |
3496 | ||
3497 | switch (ELF_ST_VISIBILITY (h->other)) | |
3498 | { | |
3499 | case STV_HIDDEN: | |
3500 | v = _("hidden symbol"); | |
3501 | break; | |
3502 | case STV_INTERNAL: | |
3503 | v = _("internal symbol"); | |
3504 | break; | |
3505 | case STV_PROTECTED: | |
3506 | v = _("protected symbol"); | |
3507 | break; | |
3508 | default: | |
3509 | v = _("symbol"); | |
3510 | pic = _("; recompile with -fPIC"); | |
3511 | break; | |
3512 | } | |
3513 | ||
3514 | if (h->def_regular) | |
3515 | fmt = _("%B: relocation %s against %s `%s' can not be used when making a shared object%s"); | |
3516 | else | |
3517 | fmt = _("%B: relocation %s against undefined %s `%s' can not be used when making a shared object%s"); | |
3518 | ||
3519 | (*_bfd_error_handler) (fmt, input_bfd, | |
3520 | x86_64_elf_howto_table[r_type].name, | |
3521 | v, h->root.root.string, pic); | |
3522 | bfd_set_error (bfd_error_bad_value); | |
3523 | return FALSE; | |
3524 | } | |
6610a52d L |
3525 | } |
3526 | /* Fall through. */ | |
3527 | ||
70256ad8 AJ |
3528 | case R_X86_64_8: |
3529 | case R_X86_64_16: | |
3530 | case R_X86_64_32: | |
d6ab8113 | 3531 | case R_X86_64_PC64: |
6b3db546 | 3532 | case R_X86_64_64: |
80643fbc | 3533 | /* FIXME: The ABI says the linker should make sure the value is |
407443a3 | 3534 | the same when it's zeroextended to 64 bit. */ |
c434dee6 | 3535 | |
b1e24c02 | 3536 | if ((input_section->flags & SEC_ALLOC) == 0) |
c434dee6 AJ |
3537 | break; |
3538 | ||
3539 | if ((info->shared | |
4bc6e03a AJ |
3540 | && (h == NULL |
3541 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3542 | || h->root.type != bfd_link_hash_undefweak) | |
d8045f23 NC |
3543 | && (! IS_X86_64_PCREL_TYPE (r_type) |
3544 | || ! SYMBOL_CALLS_LOCAL (info, h))) | |
d40d037c AJ |
3545 | || (ELIMINATE_COPY_RELOCS |
3546 | && !info->shared | |
c434dee6 AJ |
3547 | && h != NULL |
3548 | && h->dynindx != -1 | |
f5385ebf AM |
3549 | && !h->non_got_ref |
3550 | && ((h->def_dynamic | |
3551 | && !h->def_regular) | |
c434dee6 | 3552 | || h->root.type == bfd_link_hash_undefweak |
0f88be7a | 3553 | || h->root.type == bfd_link_hash_undefined))) |
70256ad8 AJ |
3554 | { |
3555 | Elf_Internal_Rela outrel; | |
b34976b6 | 3556 | bfd_boolean skip, relocate; |
c434dee6 | 3557 | asection *sreloc; |
70256ad8 AJ |
3558 | |
3559 | /* When generating a shared object, these relocations | |
3560 | are copied into the output file to be resolved at run | |
407443a3 | 3561 | time. */ |
b34976b6 AM |
3562 | skip = FALSE; |
3563 | relocate = FALSE; | |
70256ad8 | 3564 | |
c629eae0 JJ |
3565 | outrel.r_offset = |
3566 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
c434dee6 | 3567 | rel->r_offset); |
c629eae0 | 3568 | if (outrel.r_offset == (bfd_vma) -1) |
b34976b6 | 3569 | skip = TRUE; |
0fb19cbc | 3570 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3571 | skip = TRUE, relocate = TRUE; |
70256ad8 AJ |
3572 | |
3573 | outrel.r_offset += (input_section->output_section->vma | |
3574 | + input_section->output_offset); | |
3575 | ||
3576 | if (skip) | |
0bb2d96a | 3577 | memset (&outrel, 0, sizeof outrel); |
c434dee6 | 3578 | |
fd8ab9e5 AJ |
3579 | /* h->dynindx may be -1 if this symbol was marked to |
3580 | become local. */ | |
3581 | else if (h != NULL | |
c434dee6 | 3582 | && h->dynindx != -1 |
d8045f23 NC |
3583 | && (IS_X86_64_PCREL_TYPE (r_type) |
3584 | || ! info->shared | |
3585 | || ! SYMBOLIC_BIND (info, h) | |
3586 | || ! h->def_regular)) | |
70256ad8 | 3587 | { |
351f65ca | 3588 | outrel.r_info = htab->r_info (h->dynindx, r_type); |
c434dee6 | 3589 | outrel.r_addend = rel->r_addend; |
70256ad8 AJ |
3590 | } |
3591 | else | |
3592 | { | |
c434dee6 | 3593 | /* This symbol is local, or marked to become local. */ |
248775ba | 3594 | if (r_type == htab->pointer_r_type) |
607c0e09 | 3595 | { |
b34976b6 | 3596 | relocate = TRUE; |
351f65ca | 3597 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
607c0e09 AS |
3598 | outrel.r_addend = relocation + rel->r_addend; |
3599 | } | |
3600 | else | |
3601 | { | |
3602 | long sindx; | |
3603 | ||
8517fae7 | 3604 | if (bfd_is_abs_section (sec)) |
607c0e09 AS |
3605 | sindx = 0; |
3606 | else if (sec == NULL || sec->owner == NULL) | |
3607 | { | |
3608 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3609 | return FALSE; |
607c0e09 AS |
3610 | } |
3611 | else | |
3612 | { | |
3613 | asection *osec; | |
3614 | ||
74541ad4 AM |
3615 | /* We are turning this relocation into one |
3616 | against a section symbol. It would be | |
3617 | proper to subtract the symbol's value, | |
3618 | osec->vma, from the emitted reloc addend, | |
3619 | but ld.so expects buggy relocs. */ | |
607c0e09 AS |
3620 | osec = sec->output_section; |
3621 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
3622 | if (sindx == 0) |
3623 | { | |
3624 | asection *oi = htab->elf.text_index_section; | |
3625 | sindx = elf_section_data (oi)->dynindx; | |
3626 | } | |
3627 | BFD_ASSERT (sindx != 0); | |
607c0e09 AS |
3628 | } |
3629 | ||
351f65ca | 3630 | outrel.r_info = htab->r_info (sindx, r_type); |
607c0e09 AS |
3631 | outrel.r_addend = relocation + rel->r_addend; |
3632 | } | |
70256ad8 AJ |
3633 | } |
3634 | ||
cbe950e9 | 3635 | sreloc = elf_section_data (input_section)->sreloc; |
d8045f23 | 3636 | |
62d78908 L |
3637 | if (sreloc == NULL || sreloc->contents == NULL) |
3638 | { | |
3639 | r = bfd_reloc_notsupported; | |
3640 | goto check_relocation_error; | |
3641 | } | |
c434dee6 | 3642 | |
351f65ca | 3643 | elf_append_rela (output_bfd, sreloc, &outrel); |
70256ad8 AJ |
3644 | |
3645 | /* If this reloc is against an external symbol, we do | |
3646 | not want to fiddle with the addend. Otherwise, we | |
3647 | need to include the symbol value so that it becomes | |
3648 | an addend for the dynamic reloc. */ | |
0f88be7a | 3649 | if (! relocate) |
70256ad8 AJ |
3650 | continue; |
3651 | } | |
3652 | ||
3653 | break; | |
3654 | ||
bffbf940 | 3655 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
3656 | case R_X86_64_GOTPC32_TLSDESC: |
3657 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 3658 | case R_X86_64_GOTTPOFF: |
bffbf940 JJ |
3659 | tls_type = GOT_UNKNOWN; |
3660 | if (h == NULL && local_got_offsets) | |
351f65ca | 3661 | tls_type = elf_x86_64_local_got_tls_type (input_bfd) [r_symndx]; |
bffbf940 | 3662 | else if (h != NULL) |
351f65ca | 3663 | tls_type = elf_x86_64_hash_entry (h)->tls_type; |
142411ca | 3664 | |
351f65ca L |
3665 | if (! elf_x86_64_tls_transition (info, input_bfd, |
3666 | input_section, contents, | |
3667 | symtab_hdr, sym_hashes, | |
3668 | &r_type, tls_type, rel, | |
3669 | relend, h, r_symndx)) | |
534a31f6 | 3670 | return FALSE; |
bffbf940 JJ |
3671 | |
3672 | if (r_type == R_X86_64_TPOFF32) | |
3673 | { | |
142411ca L |
3674 | bfd_vma roff = rel->r_offset; |
3675 | ||
bffbf940 | 3676 | BFD_ASSERT (! unresolved_reloc); |
142411ca | 3677 | |
351f65ca | 3678 | if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD) |
bffbf940 | 3679 | { |
52bc799a | 3680 | /* GD->LE transition. For 64bit, change |
abcf1d52 | 3681 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
a3fadc9a | 3682 | .word 0x6666; rex64; call __tls_get_addr |
52bc799a | 3683 | into: |
bffbf940 | 3684 | movq %fs:0, %rax |
52bc799a L |
3685 | leaq foo@tpoff(%rax), %rax |
3686 | For 32bit, change | |
3687 | leaq foo@tlsgd(%rip), %rdi | |
3688 | .word 0x6666; rex64; call __tls_get_addr | |
3689 | into: | |
3690 | movl %fs:0, %eax | |
bffbf940 | 3691 | leaq foo@tpoff(%rax), %rax */ |
52bc799a L |
3692 | if (ABI_64_P (output_bfd)) |
3693 | memcpy (contents + roff - 4, | |
3694 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", | |
3695 | 16); | |
3696 | else | |
3697 | memcpy (contents + roff - 3, | |
3698 | "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", | |
3699 | 15); | |
eb4ff4d6 | 3700 | bfd_put_32 (output_bfd, |
351f65ca | 3701 | elf_x86_64_tpoff (info, relocation), |
142411ca | 3702 | contents + roff + 8); |
a3fadc9a | 3703 | /* Skip R_X86_64_PC32/R_X86_64_PLT32. */ |
bffbf940 JJ |
3704 | rel++; |
3705 | continue; | |
3706 | } | |
351f65ca | 3707 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC) |
67a4f2b7 AO |
3708 | { |
3709 | /* GDesc -> LE transition. | |
3710 | It's originally something like: | |
3711 | leaq x@tlsdesc(%rip), %rax | |
3712 | ||
3713 | Change it to: | |
c9736ba0 | 3714 | movl $x@tpoff, %rax. */ |
67a4f2b7 | 3715 | |
c9736ba0 | 3716 | unsigned int val, type; |
67a4f2b7 | 3717 | |
67a4f2b7 | 3718 | type = bfd_get_8 (input_bfd, contents + roff - 3); |
67a4f2b7 | 3719 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
3720 | bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1), |
3721 | contents + roff - 3); | |
3722 | bfd_put_8 (output_bfd, 0xc7, contents + roff - 2); | |
3723 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3724 | contents + roff - 1); | |
eb4ff4d6 | 3725 | bfd_put_32 (output_bfd, |
351f65ca | 3726 | elf_x86_64_tpoff (info, relocation), |
67a4f2b7 AO |
3727 | contents + roff); |
3728 | continue; | |
3729 | } | |
351f65ca | 3730 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL) |
67a4f2b7 AO |
3731 | { |
3732 | /* GDesc -> LE transition. | |
3733 | It's originally: | |
3734 | call *(%rax) | |
3735 | Turn it into: | |
142411ca | 3736 | xchg %ax,%ax. */ |
10efb593 | 3737 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
3738 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3739 | continue; | |
3740 | } | |
351f65ca | 3741 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTTPOFF) |
bffbf940 | 3742 | { |
bffbf940 JJ |
3743 | /* IE->LE transition: |
3744 | Originally it can be one of: | |
3745 | movq foo@gottpoff(%rip), %reg | |
3746 | addq foo@gottpoff(%rip), %reg | |
3747 | We change it into: | |
3748 | movq $foo, %reg | |
3749 | leaq foo(%reg), %reg | |
3750 | addq $foo, %reg. */ | |
142411ca L |
3751 | |
3752 | unsigned int val, type, reg; | |
3753 | ||
3754 | val = bfd_get_8 (input_bfd, contents + roff - 3); | |
3755 | type = bfd_get_8 (input_bfd, contents + roff - 2); | |
3756 | reg = bfd_get_8 (input_bfd, contents + roff - 1); | |
bffbf940 | 3757 | reg >>= 3; |
bffbf940 JJ |
3758 | if (type == 0x8b) |
3759 | { | |
3760 | /* movq */ | |
3761 | if (val == 0x4c) | |
3762 | bfd_put_8 (output_bfd, 0x49, | |
142411ca | 3763 | contents + roff - 3); |
4a4c5f25 L |
3764 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
3765 | bfd_put_8 (output_bfd, 0x41, | |
3766 | contents + roff - 3); | |
bffbf940 | 3767 | bfd_put_8 (output_bfd, 0xc7, |
142411ca | 3768 | contents + roff - 2); |
bffbf940 | 3769 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 3770 | contents + roff - 1); |
bffbf940 JJ |
3771 | } |
3772 | else if (reg == 4) | |
3773 | { | |
3774 | /* addq -> addq - addressing with %rsp/%r12 is | |
3775 | special */ | |
3776 | if (val == 0x4c) | |
3777 | bfd_put_8 (output_bfd, 0x49, | |
142411ca | 3778 | contents + roff - 3); |
4a4c5f25 L |
3779 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
3780 | bfd_put_8 (output_bfd, 0x41, | |
3781 | contents + roff - 3); | |
bffbf940 | 3782 | bfd_put_8 (output_bfd, 0x81, |
142411ca | 3783 | contents + roff - 2); |
bffbf940 | 3784 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 3785 | contents + roff - 1); |
bffbf940 JJ |
3786 | } |
3787 | else | |
3788 | { | |
3789 | /* addq -> leaq */ | |
3790 | if (val == 0x4c) | |
3791 | bfd_put_8 (output_bfd, 0x4d, | |
142411ca | 3792 | contents + roff - 3); |
4a4c5f25 L |
3793 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
3794 | bfd_put_8 (output_bfd, 0x45, | |
3795 | contents + roff - 3); | |
bffbf940 | 3796 | bfd_put_8 (output_bfd, 0x8d, |
142411ca | 3797 | contents + roff - 2); |
bffbf940 | 3798 | bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3), |
142411ca | 3799 | contents + roff - 1); |
bffbf940 | 3800 | } |
eb4ff4d6 | 3801 | bfd_put_32 (output_bfd, |
351f65ca | 3802 | elf_x86_64_tpoff (info, relocation), |
142411ca | 3803 | contents + roff); |
bffbf940 JJ |
3804 | continue; |
3805 | } | |
142411ca L |
3806 | else |
3807 | BFD_ASSERT (FALSE); | |
bffbf940 JJ |
3808 | } |
3809 | ||
6de2ae4a | 3810 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
3811 | abort (); |
3812 | ||
3813 | if (h != NULL) | |
67a4f2b7 AO |
3814 | { |
3815 | off = h->got.offset; | |
351f65ca | 3816 | offplt = elf_x86_64_hash_entry (h)->tlsdesc_got; |
67a4f2b7 | 3817 | } |
bffbf940 JJ |
3818 | else |
3819 | { | |
3820 | if (local_got_offsets == NULL) | |
3821 | abort (); | |
3822 | ||
3823 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3824 | offplt = local_tlsdesc_gotents[r_symndx]; |
bffbf940 JJ |
3825 | } |
3826 | ||
3827 | if ((off & 1) != 0) | |
3828 | off &= ~1; | |
26e41594 | 3829 | else |
bffbf940 JJ |
3830 | { |
3831 | Elf_Internal_Rela outrel; | |
bffbf940 | 3832 | int dr_type, indx; |
67a4f2b7 | 3833 | asection *sreloc; |
bffbf940 | 3834 | |
6de2ae4a | 3835 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
3836 | abort (); |
3837 | ||
67a4f2b7 AO |
3838 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
3839 | ||
3840 | if (GOT_TLS_GDESC_P (tls_type)) | |
3841 | { | |
351f65ca | 3842 | outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC); |
67a4f2b7 | 3843 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt |
6de2ae4a L |
3844 | + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size); |
3845 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
3846 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3847 | + offplt |
3848 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 3849 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 3850 | if (indx == 0) |
351f65ca | 3851 | outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info); |
67a4f2b7 AO |
3852 | else |
3853 | outrel.r_addend = 0; | |
351f65ca | 3854 | elf_append_rela (output_bfd, sreloc, &outrel); |
67a4f2b7 AO |
3855 | } |
3856 | ||
6de2ae4a | 3857 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 3858 | |
6de2ae4a L |
3859 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3860 | + htab->elf.sgot->output_offset + off); | |
bffbf940 | 3861 | |
67a4f2b7 | 3862 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 | 3863 | dr_type = R_X86_64_DTPMOD64; |
67a4f2b7 AO |
3864 | else if (GOT_TLS_GDESC_P (tls_type)) |
3865 | goto dr_done; | |
bffbf940 JJ |
3866 | else |
3867 | dr_type = R_X86_64_TPOFF64; | |
3868 | ||
6de2ae4a | 3869 | bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off); |
bffbf940 | 3870 | outrel.r_addend = 0; |
67a4f2b7 AO |
3871 | if ((dr_type == R_X86_64_TPOFF64 |
3872 | || dr_type == R_X86_64_TLSDESC) && indx == 0) | |
351f65ca L |
3873 | outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info); |
3874 | outrel.r_info = htab->r_info (indx, dr_type); | |
bffbf940 | 3875 | |
351f65ca | 3876 | elf_append_rela (output_bfd, sreloc, &outrel); |
bffbf940 | 3877 | |
67a4f2b7 | 3878 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 JJ |
3879 | { |
3880 | if (indx == 0) | |
3881 | { | |
d40d037c | 3882 | BFD_ASSERT (! unresolved_reloc); |
bffbf940 | 3883 | bfd_put_64 (output_bfd, |
351f65ca | 3884 | relocation - elf_x86_64_dtpoff_base (info), |
6de2ae4a | 3885 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
bffbf940 JJ |
3886 | } |
3887 | else | |
3888 | { | |
3889 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 3890 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
351f65ca | 3891 | outrel.r_info = htab->r_info (indx, |
bffbf940 JJ |
3892 | R_X86_64_DTPOFF64); |
3893 | outrel.r_offset += GOT_ENTRY_SIZE; | |
351f65ca | 3894 | elf_append_rela (output_bfd, sreloc, |
464d3bd4 | 3895 | &outrel); |
bffbf940 JJ |
3896 | } |
3897 | } | |
3898 | ||
67a4f2b7 | 3899 | dr_done: |
bffbf940 JJ |
3900 | if (h != NULL) |
3901 | h->got.offset |= 1; | |
3902 | else | |
3903 | local_got_offsets[r_symndx] |= 1; | |
3904 | } | |
3905 | ||
67a4f2b7 AO |
3906 | if (off >= (bfd_vma) -2 |
3907 | && ! GOT_TLS_GDESC_P (tls_type)) | |
bffbf940 | 3908 | abort (); |
351f65ca | 3909 | if (r_type == ELF32_R_TYPE (rel->r_info)) |
bffbf940 | 3910 | { |
67a4f2b7 AO |
3911 | if (r_type == R_X86_64_GOTPC32_TLSDESC |
3912 | || r_type == R_X86_64_TLSDESC_CALL) | |
6de2ae4a L |
3913 | relocation = htab->elf.sgotplt->output_section->vma |
3914 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3915 | + offplt + htab->sgotplt_jump_table_size; |
3916 | else | |
6de2ae4a L |
3917 | relocation = htab->elf.sgot->output_section->vma |
3918 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 3919 | unresolved_reloc = FALSE; |
bffbf940 | 3920 | } |
142411ca | 3921 | else |
67a4f2b7 | 3922 | { |
142411ca | 3923 | bfd_vma roff = rel->r_offset; |
67a4f2b7 | 3924 | |
351f65ca | 3925 | if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD) |
142411ca | 3926 | { |
52bc799a | 3927 | /* GD->IE transition. For 64bit, change |
142411ca L |
3928 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
3929 | .word 0x6666; rex64; call __tls_get_addr@plt | |
52bc799a | 3930 | into: |
142411ca | 3931 | movq %fs:0, %rax |
52bc799a L |
3932 | addq foo@gottpoff(%rip), %rax |
3933 | For 32bit, change | |
3934 | leaq foo@tlsgd(%rip), %rdi | |
3935 | .word 0x6666; rex64; call __tls_get_addr@plt | |
3936 | into: | |
3937 | movl %fs:0, %eax | |
142411ca | 3938 | addq foo@gottpoff(%rip), %rax */ |
52bc799a L |
3939 | if (ABI_64_P (output_bfd)) |
3940 | memcpy (contents + roff - 4, | |
3941 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
3942 | 16); | |
3943 | else | |
3944 | memcpy (contents + roff - 3, | |
3945 | "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
3946 | 15); | |
142411ca | 3947 | |
6de2ae4a L |
3948 | relocation = (htab->elf.sgot->output_section->vma |
3949 | + htab->elf.sgot->output_offset + off | |
142411ca L |
3950 | - roff |
3951 | - input_section->output_section->vma | |
3952 | - input_section->output_offset | |
3953 | - 12); | |
3954 | bfd_put_32 (output_bfd, relocation, | |
3955 | contents + roff + 8); | |
3956 | /* Skip R_X86_64_PLT32. */ | |
3957 | rel++; | |
3958 | continue; | |
3959 | } | |
351f65ca | 3960 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC) |
142411ca L |
3961 | { |
3962 | /* GDesc -> IE transition. | |
3963 | It's originally something like: | |
3964 | leaq x@tlsdesc(%rip), %rax | |
67a4f2b7 | 3965 | |
142411ca | 3966 | Change it to: |
c9736ba0 | 3967 | movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */ |
67a4f2b7 | 3968 | |
142411ca L |
3969 | /* Now modify the instruction as appropriate. To |
3970 | turn a leaq into a movq in the form we use it, it | |
3971 | suffices to change the second byte from 0x8d to | |
3972 | 0x8b. */ | |
3973 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
3974 | ||
3975 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
3976 | htab->elf.sgot->output_section->vma |
3977 | + htab->elf.sgot->output_offset + off | |
142411ca L |
3978 | - rel->r_offset |
3979 | - input_section->output_section->vma | |
3980 | - input_section->output_offset | |
3981 | - 4, | |
3982 | contents + roff); | |
3983 | continue; | |
3984 | } | |
351f65ca | 3985 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL) |
142411ca L |
3986 | { |
3987 | /* GDesc -> IE transition. | |
3988 | It's originally: | |
3989 | call *(%rax) | |
3990 | ||
3991 | Change it to: | |
c9736ba0 | 3992 | xchg %ax, %ax. */ |
142411ca | 3993 | |
142411ca L |
3994 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
3995 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); | |
3996 | continue; | |
3997 | } | |
3998 | else | |
3999 | BFD_ASSERT (FALSE); | |
67a4f2b7 | 4000 | } |
bffbf940 JJ |
4001 | break; |
4002 | ||
4003 | case R_X86_64_TLSLD: | |
351f65ca L |
4004 | if (! elf_x86_64_tls_transition (info, input_bfd, |
4005 | input_section, contents, | |
4006 | symtab_hdr, sym_hashes, | |
4007 | &r_type, GOT_UNKNOWN, | |
4008 | rel, relend, h, r_symndx)) | |
142411ca | 4009 | return FALSE; |
a3fadc9a | 4010 | |
142411ca L |
4011 | if (r_type != R_X86_64_TLSLD) |
4012 | { | |
bffbf940 | 4013 | /* LD->LE transition: |
a3fadc9a | 4014 | leaq foo@tlsld(%rip), %rdi; call __tls_get_addr. |
52bc799a L |
4015 | For 64bit, we change it into: |
4016 | .word 0x6666; .byte 0x66; movq %fs:0, %rax. | |
4017 | For 32bit, we change it into: | |
4018 | nopl 0x0(%rax); movl %fs:0, %eax. */ | |
142411ca L |
4019 | |
4020 | BFD_ASSERT (r_type == R_X86_64_TPOFF32); | |
52bc799a L |
4021 | if (ABI_64_P (output_bfd)) |
4022 | memcpy (contents + rel->r_offset - 3, | |
4023 | "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12); | |
4024 | else | |
4025 | memcpy (contents + rel->r_offset - 3, | |
4026 | "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12); | |
a3fadc9a | 4027 | /* Skip R_X86_64_PC32/R_X86_64_PLT32. */ |
bffbf940 JJ |
4028 | rel++; |
4029 | continue; | |
4030 | } | |
4031 | ||
6de2ae4a | 4032 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
4033 | abort (); |
4034 | ||
4035 | off = htab->tls_ld_got.offset; | |
4036 | if (off & 1) | |
4037 | off &= ~1; | |
4038 | else | |
4039 | { | |
4040 | Elf_Internal_Rela outrel; | |
bffbf940 | 4041 | |
6de2ae4a | 4042 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
4043 | abort (); |
4044 | ||
6de2ae4a L |
4045 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
4046 | + htab->elf.sgot->output_offset + off); | |
bffbf940 JJ |
4047 | |
4048 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 4049 | htab->elf.sgot->contents + off); |
bffbf940 | 4050 | bfd_put_64 (output_bfd, 0, |
6de2ae4a | 4051 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
351f65ca | 4052 | outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64); |
bffbf940 | 4053 | outrel.r_addend = 0; |
351f65ca | 4054 | elf_append_rela (output_bfd, htab->elf.srelgot, |
464d3bd4 | 4055 | &outrel); |
bffbf940 JJ |
4056 | htab->tls_ld_got.offset |= 1; |
4057 | } | |
6de2ae4a L |
4058 | relocation = htab->elf.sgot->output_section->vma |
4059 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 4060 | unresolved_reloc = FALSE; |
bffbf940 JJ |
4061 | break; |
4062 | ||
4063 | case R_X86_64_DTPOFF32: | |
1d85728f | 4064 | if (!info->executable|| (input_section->flags & SEC_CODE) == 0) |
351f65ca | 4065 | relocation -= elf_x86_64_dtpoff_base (info); |
bffbf940 | 4066 | else |
351f65ca | 4067 | relocation = elf_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
4068 | break; |
4069 | ||
4070 | case R_X86_64_TPOFF32: | |
6769d501 | 4071 | case R_X86_64_TPOFF64: |
9b769489 | 4072 | BFD_ASSERT (info->executable); |
351f65ca | 4073 | relocation = elf_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
4074 | break; |
4075 | ||
70256ad8 AJ |
4076 | default: |
4077 | break; | |
4078 | } | |
8d88c4ca | 4079 | |
239e1f3a AM |
4080 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
4081 | because such sections are not SEC_ALLOC and thus ld.so will | |
4082 | not process them. */ | |
c434dee6 | 4083 | if (unresolved_reloc |
239e1f3a | 4084 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 4085 | && h->def_dynamic)) |
c434dee6 | 4086 | (*_bfd_error_handler) |
843fe662 | 4087 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
4088 | input_bfd, |
4089 | input_section, | |
c434dee6 | 4090 | (long) rel->r_offset, |
843fe662 | 4091 | howto->name, |
c434dee6 AJ |
4092 | h->root.root.string); |
4093 | ||
cbe950e9 | 4094 | do_relocation: |
8d88c4ca | 4095 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
c434dee6 AJ |
4096 | contents, rel->r_offset, |
4097 | relocation, rel->r_addend); | |
8d88c4ca | 4098 | |
62d78908 | 4099 | check_relocation_error: |
8d88c4ca | 4100 | if (r != bfd_reloc_ok) |
8da6118f | 4101 | { |
c434dee6 AJ |
4102 | const char *name; |
4103 | ||
4104 | if (h != NULL) | |
4105 | name = h->root.root.string; | |
4106 | else | |
8da6118f | 4107 | { |
c434dee6 AJ |
4108 | name = bfd_elf_string_from_elf_section (input_bfd, |
4109 | symtab_hdr->sh_link, | |
4110 | sym->st_name); | |
4111 | if (name == NULL) | |
b34976b6 | 4112 | return FALSE; |
c434dee6 AJ |
4113 | if (*name == '\0') |
4114 | name = bfd_section_name (input_bfd, sec); | |
4115 | } | |
4116 | ||
4117 | if (r == bfd_reloc_overflow) | |
4118 | { | |
c434dee6 | 4119 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
4120 | (info, (h ? &h->root : NULL), name, howto->name, |
4121 | (bfd_vma) 0, input_bfd, input_section, | |
4122 | rel->r_offset))) | |
b34976b6 | 4123 | return FALSE; |
c434dee6 AJ |
4124 | } |
4125 | else | |
4126 | { | |
4127 | (*_bfd_error_handler) | |
bb95161d | 4128 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
d003868e | 4129 | input_bfd, input_section, |
c434dee6 | 4130 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 4131 | return FALSE; |
8da6118f KH |
4132 | } |
4133 | } | |
8d88c4ca | 4134 | } |
70256ad8 | 4135 | |
b34976b6 | 4136 | return TRUE; |
70256ad8 AJ |
4137 | } |
4138 | ||
4139 | /* Finish up dynamic symbol handling. We set the contents of various | |
4140 | dynamic sections here. */ | |
4141 | ||
b34976b6 | 4142 | static bfd_boolean |
351f65ca L |
4143 | elf_x86_64_finish_dynamic_symbol (bfd *output_bfd, |
4144 | struct bfd_link_info *info, | |
4145 | struct elf_link_hash_entry *h, | |
4146 | Elf_Internal_Sym *sym) | |
70256ad8 | 4147 | { |
351f65ca | 4148 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 | 4149 | |
351f65ca | 4150 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
4151 | if (htab == NULL) |
4152 | return FALSE; | |
70256ad8 AJ |
4153 | |
4154 | if (h->plt.offset != (bfd_vma) -1) | |
4155 | { | |
70256ad8 AJ |
4156 | bfd_vma plt_index; |
4157 | bfd_vma got_offset; | |
4158 | Elf_Internal_Rela rela; | |
947216bf | 4159 | bfd_byte *loc; |
cbe950e9 | 4160 | asection *plt, *gotplt, *relplt; |
351f65ca | 4161 | const struct elf_backend_data *bed; |
cbe950e9 L |
4162 | |
4163 | /* When building a static executable, use .iplt, .igot.plt and | |
4164 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 4165 | if (htab->elf.splt != NULL) |
cbe950e9 | 4166 | { |
6de2ae4a L |
4167 | plt = htab->elf.splt; |
4168 | gotplt = htab->elf.sgotplt; | |
4169 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
4170 | } |
4171 | else | |
4172 | { | |
6de2ae4a L |
4173 | plt = htab->elf.iplt; |
4174 | gotplt = htab->elf.igotplt; | |
4175 | relplt = htab->elf.irelplt; | |
cbe950e9 | 4176 | } |
70256ad8 AJ |
4177 | |
4178 | /* This symbol has an entry in the procedure linkage table. Set | |
407443a3 | 4179 | it up. */ |
cbe950e9 L |
4180 | if ((h->dynindx == -1 |
4181 | && !((h->forced_local || info->executable) | |
4182 | && h->def_regular | |
4183 | && h->type == STT_GNU_IFUNC)) | |
4184 | || plt == NULL | |
4185 | || gotplt == NULL | |
4186 | || relplt == NULL) | |
f6df62c8 | 4187 | return FALSE; |
70256ad8 AJ |
4188 | |
4189 | /* Get the index in the procedure linkage table which | |
4190 | corresponds to this symbol. This is the index of this symbol | |
4191 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 4192 | first entry in the procedure linkage table is reserved. |
6bbec505 | 4193 | |
cbe950e9 | 4194 | Get the offset into the .got table of the entry that |
407443a3 | 4195 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE |
cbe950e9 L |
4196 | bytes. The first three are reserved for the dynamic linker. |
4197 | ||
4198 | For static executables, we don't reserve anything. */ | |
4199 | ||
6de2ae4a | 4200 | if (plt == htab->elf.splt) |
cbe950e9 L |
4201 | { |
4202 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
4203 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
4204 | } | |
4205 | else | |
4206 | { | |
4207 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
4208 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
4209 | } | |
70256ad8 AJ |
4210 | |
4211 | /* Fill in the entry in the procedure linkage table. */ | |
351f65ca | 4212 | memcpy (plt->contents + h->plt.offset, elf_x86_64_plt_entry, |
70256ad8 AJ |
4213 | PLT_ENTRY_SIZE); |
4214 | ||
4215 | /* Insert the relocation positions of the plt section. The magic | |
4216 | numbers at the end of the statements are the positions of the | |
4217 | relocations in the plt section. */ | |
653165cc AJ |
4218 | /* Put offset for jmp *name@GOTPCREL(%rip), since the |
4219 | instruction uses 6 bytes, subtract this value. */ | |
4220 | bfd_put_32 (output_bfd, | |
cbe950e9 L |
4221 | (gotplt->output_section->vma |
4222 | + gotplt->output_offset | |
653165cc | 4223 | + got_offset |
cbe950e9 L |
4224 | - plt->output_section->vma |
4225 | - plt->output_offset | |
653165cc AJ |
4226 | - h->plt.offset |
4227 | - 6), | |
cbe950e9 L |
4228 | plt->contents + h->plt.offset + 2); |
4229 | ||
4230 | /* Don't fill PLT entry for static executables. */ | |
6de2ae4a | 4231 | if (plt == htab->elf.splt) |
cbe950e9 L |
4232 | { |
4233 | /* Put relocation index. */ | |
4234 | bfd_put_32 (output_bfd, plt_index, | |
4235 | plt->contents + h->plt.offset + 7); | |
4236 | /* Put offset for jmp .PLT0. */ | |
4237 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), | |
4238 | plt->contents + h->plt.offset + 12); | |
4239 | } | |
70256ad8 | 4240 | |
653165cc AJ |
4241 | /* Fill in the entry in the global offset table, initially this |
4242 | points to the pushq instruction in the PLT which is at offset 6. */ | |
cbe950e9 L |
4243 | bfd_put_64 (output_bfd, (plt->output_section->vma |
4244 | + plt->output_offset | |
70256ad8 | 4245 | + h->plt.offset + 6), |
cbe950e9 | 4246 | gotplt->contents + got_offset); |
70256ad8 AJ |
4247 | |
4248 | /* Fill in the entry in the .rela.plt section. */ | |
cbe950e9 L |
4249 | rela.r_offset = (gotplt->output_section->vma |
4250 | + gotplt->output_offset | |
70256ad8 | 4251 | + got_offset); |
cbe950e9 L |
4252 | if (h->dynindx == -1 |
4253 | || ((info->executable | |
4254 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
4255 | && h->def_regular | |
4256 | && h->type == STT_GNU_IFUNC)) | |
4257 | { | |
4258 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
4259 | R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */ | |
351f65ca | 4260 | rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE); |
cbe950e9 L |
4261 | rela.r_addend = (h->root.u.def.value |
4262 | + h->root.u.def.section->output_section->vma | |
4263 | + h->root.u.def.section->output_offset); | |
4264 | } | |
4265 | else | |
4266 | { | |
351f65ca | 4267 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT); |
cbe950e9 L |
4268 | rela.r_addend = 0; |
4269 | } | |
351f65ca L |
4270 | |
4271 | bed = get_elf_backend_data (output_bfd); | |
4272 | loc = relplt->contents + plt_index * bed->s->sizeof_rela; | |
82e96e07 | 4273 | bed->s->swap_reloca_out (output_bfd, &rela, loc); |
70256ad8 | 4274 | |
f5385ebf | 4275 | if (!h->def_regular) |
70256ad8 AJ |
4276 | { |
4277 | /* Mark the symbol as undefined, rather than as defined in | |
47a9f7b3 JJ |
4278 | the .plt section. Leave the value if there were any |
4279 | relocations where pointer equality matters (this is a clue | |
c434dee6 AJ |
4280 | for the dynamic linker, to make function pointer |
4281 | comparisons work between an application and shared | |
47a9f7b3 JJ |
4282 | library), otherwise set it to zero. If a function is only |
4283 | called from a binary, there is no need to slow down | |
4284 | shared libraries because of that. */ | |
70256ad8 | 4285 | sym->st_shndx = SHN_UNDEF; |
f5385ebf | 4286 | if (!h->pointer_equality_needed) |
47a9f7b3 | 4287 | sym->st_value = 0; |
70256ad8 AJ |
4288 | } |
4289 | } | |
4290 | ||
bffbf940 | 4291 | if (h->got.offset != (bfd_vma) -1 |
351f65ca L |
4292 | && ! GOT_TLS_GD_ANY_P (elf_x86_64_hash_entry (h)->tls_type) |
4293 | && elf_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE) | |
053579d7 | 4294 | { |
053579d7 AJ |
4295 | Elf_Internal_Rela rela; |
4296 | ||
4297 | /* This symbol has an entry in the global offset table. Set it | |
bffbf940 | 4298 | up. */ |
6de2ae4a | 4299 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
c434dee6 | 4300 | abort (); |
053579d7 | 4301 | |
6de2ae4a L |
4302 | rela.r_offset = (htab->elf.sgot->output_section->vma |
4303 | + htab->elf.sgot->output_offset | |
dc810e39 | 4304 | + (h->got.offset &~ (bfd_vma) 1)); |
053579d7 AJ |
4305 | |
4306 | /* If this is a static link, or it is a -Bsymbolic link and the | |
4307 | symbol is defined locally or was forced to be local because | |
4308 | of a version file, we just want to emit a RELATIVE reloc. | |
4309 | The entry in the global offset table will already have been | |
4310 | initialized in the relocate_section function. */ | |
710ab287 | 4311 | if (h->def_regular |
0018b0a3 L |
4312 | && h->type == STT_GNU_IFUNC) |
4313 | { | |
710ab287 L |
4314 | if (info->shared) |
4315 | { | |
4316 | /* Generate R_X86_64_GLOB_DAT. */ | |
4317 | goto do_glob_dat; | |
4318 | } | |
4319 | else | |
4320 | { | |
90d60710 L |
4321 | asection *plt; |
4322 | ||
710ab287 L |
4323 | if (!h->pointer_equality_needed) |
4324 | abort (); | |
4325 | ||
4326 | /* For non-shared object, we can't use .got.plt, which | |
4327 | contains the real function addres if we need pointer | |
4328 | equality. We load the GOT entry with the PLT entry. */ | |
90d60710 | 4329 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
710ab287 L |
4330 | bfd_put_64 (output_bfd, (plt->output_section->vma |
4331 | + plt->output_offset | |
4332 | + h->plt.offset), | |
6de2ae4a | 4333 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
4334 | return TRUE; |
4335 | } | |
0018b0a3 L |
4336 | } |
4337 | else if (info->shared | |
4338 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
053579d7 | 4339 | { |
41bed6dd L |
4340 | if (!h->def_regular) |
4341 | return FALSE; | |
cc78d0af | 4342 | BFD_ASSERT((h->got.offset & 1) != 0); |
351f65ca | 4343 | rela.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
053579d7 AJ |
4344 | rela.r_addend = (h->root.u.def.value |
4345 | + h->root.u.def.section->output_section->vma | |
4346 | + h->root.u.def.section->output_offset); | |
4347 | } | |
4348 | else | |
4349 | { | |
4350 | BFD_ASSERT((h->got.offset & 1) == 0); | |
710ab287 | 4351 | do_glob_dat: |
c434dee6 | 4352 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 4353 | htab->elf.sgot->contents + h->got.offset); |
351f65ca | 4354 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT); |
053579d7 AJ |
4355 | rela.r_addend = 0; |
4356 | } | |
4357 | ||
351f65ca | 4358 | elf_append_rela (output_bfd, htab->elf.srelgot, &rela); |
053579d7 AJ |
4359 | } |
4360 | ||
f5385ebf | 4361 | if (h->needs_copy) |
70256ad8 | 4362 | { |
70256ad8 AJ |
4363 | Elf_Internal_Rela rela; |
4364 | ||
4365 | /* This symbol needs a copy reloc. Set it up. */ | |
4366 | ||
c434dee6 AJ |
4367 | if (h->dynindx == -1 |
4368 | || (h->root.type != bfd_link_hash_defined | |
4369 | && h->root.type != bfd_link_hash_defweak) | |
4370 | || htab->srelbss == NULL) | |
4371 | abort (); | |
70256ad8 AJ |
4372 | |
4373 | rela.r_offset = (h->root.u.def.value | |
4374 | + h->root.u.def.section->output_section->vma | |
4375 | + h->root.u.def.section->output_offset); | |
351f65ca | 4376 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY); |
70256ad8 | 4377 | rela.r_addend = 0; |
351f65ca | 4378 | elf_append_rela (output_bfd, htab->srelbss, &rela); |
70256ad8 AJ |
4379 | } |
4380 | ||
c25bc9fc L |
4381 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may |
4382 | be NULL for local symbols. */ | |
4383 | if (sym != NULL | |
4384 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4385 | || h == htab->elf.hgot)) | |
70256ad8 AJ |
4386 | sym->st_shndx = SHN_ABS; |
4387 | ||
b34976b6 | 4388 | return TRUE; |
70256ad8 AJ |
4389 | } |
4390 | ||
c25bc9fc L |
4391 | /* Finish up local dynamic symbol handling. We set the contents of |
4392 | various dynamic sections here. */ | |
4393 | ||
4394 | static bfd_boolean | |
351f65ca | 4395 | elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf) |
c25bc9fc L |
4396 | { |
4397 | struct elf_link_hash_entry *h | |
4398 | = (struct elf_link_hash_entry *) *slot; | |
4399 | struct bfd_link_info *info | |
4400 | = (struct bfd_link_info *) inf; | |
4401 | ||
351f65ca | 4402 | return elf_x86_64_finish_dynamic_symbol (info->output_bfd, |
c25bc9fc L |
4403 | info, h, NULL); |
4404 | } | |
4405 | ||
c434dee6 AJ |
4406 | /* Used to decide how to sort relocs in an optimal manner for the |
4407 | dynamic linker, before writing them out. */ | |
4408 | ||
4409 | static enum elf_reloc_type_class | |
351f65ca | 4410 | elf_x86_64_reloc_type_class (const Elf_Internal_Rela *rela) |
c434dee6 | 4411 | { |
351f65ca | 4412 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
c434dee6 AJ |
4413 | { |
4414 | case R_X86_64_RELATIVE: | |
4415 | return reloc_class_relative; | |
4416 | case R_X86_64_JUMP_SLOT: | |
4417 | return reloc_class_plt; | |
4418 | case R_X86_64_COPY: | |
4419 | return reloc_class_copy; | |
4420 | default: | |
4421 | return reloc_class_normal; | |
4422 | } | |
4423 | } | |
4424 | ||
70256ad8 AJ |
4425 | /* Finish up the dynamic sections. */ |
4426 | ||
b34976b6 | 4427 | static bfd_boolean |
351f65ca L |
4428 | elf_x86_64_finish_dynamic_sections (bfd *output_bfd, |
4429 | struct bfd_link_info *info) | |
70256ad8 | 4430 | { |
351f65ca | 4431 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
4432 | bfd *dynobj; |
4433 | asection *sdyn; | |
70256ad8 | 4434 | |
351f65ca | 4435 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
4436 | if (htab == NULL) |
4437 | return FALSE; | |
4438 | ||
c434dee6 | 4439 | dynobj = htab->elf.dynobj; |
70256ad8 AJ |
4440 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
4441 | ||
c434dee6 | 4442 | if (htab->elf.dynamic_sections_created) |
70256ad8 | 4443 | { |
82e96e07 L |
4444 | bfd_byte *dyncon, *dynconend; |
4445 | const struct elf_backend_data *bed; | |
4446 | bfd_size_type sizeof_dyn; | |
70256ad8 | 4447 | |
6de2ae4a | 4448 | if (sdyn == NULL || htab->elf.sgot == NULL) |
c434dee6 | 4449 | abort (); |
70256ad8 | 4450 | |
82e96e07 L |
4451 | bed = get_elf_backend_data (dynobj); |
4452 | sizeof_dyn = bed->s->sizeof_dyn; | |
4453 | dyncon = sdyn->contents; | |
4454 | dynconend = sdyn->contents + sdyn->size; | |
4455 | for (; dyncon < dynconend; dyncon += sizeof_dyn) | |
70256ad8 AJ |
4456 | { |
4457 | Elf_Internal_Dyn dyn; | |
70256ad8 AJ |
4458 | asection *s; |
4459 | ||
82e96e07 | 4460 | (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn); |
70256ad8 AJ |
4461 | |
4462 | switch (dyn.d_tag) | |
4463 | { | |
4464 | default: | |
053579d7 | 4465 | continue; |
70256ad8 AJ |
4466 | |
4467 | case DT_PLTGOT: | |
6de2ae4a | 4468 | s = htab->elf.sgotplt; |
8c37241b | 4469 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
c434dee6 | 4470 | break; |
70256ad8 AJ |
4471 | |
4472 | case DT_JMPREL: | |
6de2ae4a | 4473 | dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma; |
c434dee6 | 4474 | break; |
70256ad8 | 4475 | |
c434dee6 | 4476 | case DT_PLTRELSZ: |
6de2ae4a | 4477 | s = htab->elf.srelplt->output_section; |
eea6121a | 4478 | dyn.d_un.d_val = s->size; |
70256ad8 AJ |
4479 | break; |
4480 | ||
4481 | case DT_RELASZ: | |
c434dee6 AJ |
4482 | /* The procedure linkage table relocs (DT_JMPREL) should |
4483 | not be included in the overall relocs (DT_RELA). | |
4484 | Therefore, we override the DT_RELASZ entry here to | |
4485 | make it not include the JMPREL relocs. Since the | |
4486 | linker script arranges for .rela.plt to follow all | |
4487 | other relocation sections, we don't have to worry | |
4488 | about changing the DT_RELA entry. */ | |
6de2ae4a | 4489 | if (htab->elf.srelplt != NULL) |
70256ad8 | 4490 | { |
6de2ae4a | 4491 | s = htab->elf.srelplt->output_section; |
eea6121a | 4492 | dyn.d_un.d_val -= s->size; |
70256ad8 AJ |
4493 | } |
4494 | break; | |
67a4f2b7 AO |
4495 | |
4496 | case DT_TLSDESC_PLT: | |
6de2ae4a | 4497 | s = htab->elf.splt; |
67a4f2b7 AO |
4498 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
4499 | + htab->tlsdesc_plt; | |
4500 | break; | |
4501 | ||
4502 | case DT_TLSDESC_GOT: | |
6de2ae4a | 4503 | s = htab->elf.sgot; |
67a4f2b7 AO |
4504 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
4505 | + htab->tlsdesc_got; | |
4506 | break; | |
70256ad8 | 4507 | } |
c434dee6 | 4508 | |
82e96e07 | 4509 | (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon); |
70256ad8 AJ |
4510 | } |
4511 | ||
c434dee6 | 4512 | /* Fill in the special first entry in the procedure linkage table. */ |
6de2ae4a | 4513 | if (htab->elf.splt && htab->elf.splt->size > 0) |
70256ad8 | 4514 | { |
653165cc | 4515 | /* Fill in the first entry in the procedure linkage table. */ |
351f65ca | 4516 | memcpy (htab->elf.splt->contents, elf_x86_64_plt0_entry, |
c434dee6 | 4517 | PLT_ENTRY_SIZE); |
653165cc AJ |
4518 | /* Add offset for pushq GOT+8(%rip), since the instruction |
4519 | uses 6 bytes subtract this value. */ | |
4520 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4521 | (htab->elf.sgotplt->output_section->vma |
4522 | + htab->elf.sgotplt->output_offset | |
653165cc | 4523 | + 8 |
6de2ae4a L |
4524 | - htab->elf.splt->output_section->vma |
4525 | - htab->elf.splt->output_offset | |
653165cc | 4526 | - 6), |
6de2ae4a | 4527 | htab->elf.splt->contents + 2); |
653165cc AJ |
4528 | /* Add offset for jmp *GOT+16(%rip). The 12 is the offset to |
4529 | the end of the instruction. */ | |
4530 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4531 | (htab->elf.sgotplt->output_section->vma |
4532 | + htab->elf.sgotplt->output_offset | |
653165cc | 4533 | + 16 |
6de2ae4a L |
4534 | - htab->elf.splt->output_section->vma |
4535 | - htab->elf.splt->output_offset | |
653165cc | 4536 | - 12), |
6de2ae4a | 4537 | htab->elf.splt->contents + 8); |
653165cc | 4538 | |
6de2ae4a | 4539 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize = |
c434dee6 | 4540 | PLT_ENTRY_SIZE; |
67a4f2b7 AO |
4541 | |
4542 | if (htab->tlsdesc_plt) | |
4543 | { | |
4544 | bfd_put_64 (output_bfd, (bfd_vma) 0, | |
6de2ae4a | 4545 | htab->elf.sgot->contents + htab->tlsdesc_got); |
67a4f2b7 | 4546 | |
6de2ae4a | 4547 | memcpy (htab->elf.splt->contents + htab->tlsdesc_plt, |
351f65ca | 4548 | elf_x86_64_plt0_entry, |
67a4f2b7 AO |
4549 | PLT_ENTRY_SIZE); |
4550 | ||
4551 | /* Add offset for pushq GOT+8(%rip), since the | |
4552 | instruction uses 6 bytes subtract this value. */ | |
4553 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4554 | (htab->elf.sgotplt->output_section->vma |
4555 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 | 4556 | + 8 |
6de2ae4a L |
4557 | - htab->elf.splt->output_section->vma |
4558 | - htab->elf.splt->output_offset | |
67a4f2b7 AO |
4559 | - htab->tlsdesc_plt |
4560 | - 6), | |
6de2ae4a | 4561 | htab->elf.splt->contents + htab->tlsdesc_plt + 2); |
67a4f2b7 AO |
4562 | /* Add offset for jmp *GOT+TDG(%rip), where TGD stands for |
4563 | htab->tlsdesc_got. The 12 is the offset to the end of | |
4564 | the instruction. */ | |
4565 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4566 | (htab->elf.sgot->output_section->vma |
4567 | + htab->elf.sgot->output_offset | |
67a4f2b7 | 4568 | + htab->tlsdesc_got |
6de2ae4a L |
4569 | - htab->elf.splt->output_section->vma |
4570 | - htab->elf.splt->output_offset | |
67a4f2b7 AO |
4571 | - htab->tlsdesc_plt |
4572 | - 12), | |
6de2ae4a | 4573 | htab->elf.splt->contents + htab->tlsdesc_plt + 8); |
67a4f2b7 | 4574 | } |
70256ad8 | 4575 | } |
70256ad8 AJ |
4576 | } |
4577 | ||
6de2ae4a | 4578 | if (htab->elf.sgotplt) |
70256ad8 | 4579 | { |
56d4289c L |
4580 | if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) |
4581 | { | |
4582 | (*_bfd_error_handler) | |
4583 | (_("discarded output section: `%A'"), htab->elf.sgotplt); | |
4584 | return FALSE; | |
4585 | } | |
4586 | ||
c434dee6 | 4587 | /* Fill in the first three entries in the global offset table. */ |
6de2ae4a | 4588 | if (htab->elf.sgotplt->size > 0) |
c434dee6 AJ |
4589 | { |
4590 | /* Set the first entry in the global offset table to the address of | |
4591 | the dynamic section. */ | |
4592 | if (sdyn == NULL) | |
6de2ae4a | 4593 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents); |
c434dee6 AJ |
4594 | else |
4595 | bfd_put_64 (output_bfd, | |
4596 | sdyn->output_section->vma + sdyn->output_offset, | |
6de2ae4a | 4597 | htab->elf.sgotplt->contents); |
c434dee6 | 4598 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
6de2ae4a L |
4599 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE); |
4600 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2); | |
c434dee6 | 4601 | } |
70256ad8 | 4602 | |
6de2ae4a | 4603 | elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = |
c434dee6 AJ |
4604 | GOT_ENTRY_SIZE; |
4605 | } | |
70256ad8 | 4606 | |
e41b3a13 JJ |
4607 | /* Adjust .eh_frame for .plt section. */ |
4608 | if (htab->plt_eh_frame != NULL) | |
4609 | { | |
4610 | if (htab->elf.splt != NULL | |
4611 | && htab->elf.splt->size != 0 | |
4612 | && (htab->elf.splt->flags & SEC_EXCLUDE) == 0 | |
4613 | && htab->elf.splt->output_section != NULL | |
4614 | && htab->plt_eh_frame->output_section != NULL) | |
4615 | { | |
4616 | bfd_vma plt_start = htab->elf.splt->output_section->vma; | |
4617 | bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma | |
4618 | + htab->plt_eh_frame->output_offset | |
4619 | + PLT_FDE_START_OFFSET; | |
4620 | bfd_put_signed_32 (dynobj, plt_start - eh_frame_start, | |
4621 | htab->plt_eh_frame->contents | |
4622 | + PLT_FDE_START_OFFSET); | |
4623 | } | |
4624 | if (htab->plt_eh_frame->sec_info_type | |
4625 | == ELF_INFO_TYPE_EH_FRAME) | |
4626 | { | |
4627 | if (! _bfd_elf_write_section_eh_frame (output_bfd, info, | |
4628 | htab->plt_eh_frame, | |
4629 | htab->plt_eh_frame->contents)) | |
4630 | return FALSE; | |
4631 | } | |
4632 | } | |
4633 | ||
6de2ae4a L |
4634 | if (htab->elf.sgot && htab->elf.sgot->size > 0) |
4635 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize | |
8c37241b JJ |
4636 | = GOT_ENTRY_SIZE; |
4637 | ||
c25bc9fc L |
4638 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
4639 | htab_traverse (htab->loc_hash_table, | |
351f65ca | 4640 | elf_x86_64_finish_local_dynamic_symbol, |
c25bc9fc L |
4641 | info); |
4642 | ||
b34976b6 | 4643 | return TRUE; |
8d88c4ca NC |
4644 | } |
4645 | ||
4c45e5c9 JJ |
4646 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4647 | or (bfd_vma) -1 if it should not be included. */ | |
4648 | ||
4649 | static bfd_vma | |
351f65ca L |
4650 | elf_x86_64_plt_sym_val (bfd_vma i, const asection *plt, |
4651 | const arelent *rel ATTRIBUTE_UNUSED) | |
4c45e5c9 JJ |
4652 | { |
4653 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
4654 | } | |
8df9fc9d | 4655 | |
d2b2c203 DJ |
4656 | /* Handle an x86-64 specific section when reading an object file. This |
4657 | is called when elfcode.h finds a section with an unknown type. */ | |
4658 | ||
4659 | static bfd_boolean | |
351f65ca | 4660 | elf_x86_64_section_from_shdr (bfd *abfd, |
6dc132d9 L |
4661 | Elf_Internal_Shdr *hdr, |
4662 | const char *name, | |
4663 | int shindex) | |
d2b2c203 DJ |
4664 | { |
4665 | if (hdr->sh_type != SHT_X86_64_UNWIND) | |
4666 | return FALSE; | |
4667 | ||
6dc132d9 | 4668 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
d2b2c203 DJ |
4669 | return FALSE; |
4670 | ||
4671 | return TRUE; | |
4672 | } | |
4673 | ||
3b22753a L |
4674 | /* Hook called by the linker routine which adds symbols from an object |
4675 | file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead | |
4676 | of .bss. */ | |
4677 | ||
4678 | static bfd_boolean | |
351f65ca L |
4679 | elf_x86_64_add_symbol_hook (bfd *abfd, |
4680 | struct bfd_link_info *info, | |
4681 | Elf_Internal_Sym *sym, | |
4682 | const char **namep ATTRIBUTE_UNUSED, | |
4683 | flagword *flagsp ATTRIBUTE_UNUSED, | |
4684 | asection **secp, | |
4685 | bfd_vma *valp) | |
3b22753a L |
4686 | { |
4687 | asection *lcomm; | |
4688 | ||
4689 | switch (sym->st_shndx) | |
4690 | { | |
4691 | case SHN_X86_64_LCOMMON: | |
4692 | lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON"); | |
4693 | if (lcomm == NULL) | |
4694 | { | |
4695 | lcomm = bfd_make_section_with_flags (abfd, | |
4696 | "LARGE_COMMON", | |
4697 | (SEC_ALLOC | |
4698 | | SEC_IS_COMMON | |
4699 | | SEC_LINKER_CREATED)); | |
4700 | if (lcomm == NULL) | |
4701 | return FALSE; | |
4702 | elf_section_flags (lcomm) |= SHF_X86_64_LARGE; | |
4703 | } | |
4704 | *secp = lcomm; | |
4705 | *valp = sym->st_size; | |
c35bdf6e | 4706 | return TRUE; |
3b22753a | 4707 | } |
d8045f23 | 4708 | |
c16153ae | 4709 | if ((abfd->flags & DYNAMIC) == 0 |
f64b2e8d NC |
4710 | && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
4711 | || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)) | |
4712 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
d8045f23 | 4713 | |
3b22753a L |
4714 | return TRUE; |
4715 | } | |
4716 | ||
4717 | ||
4718 | /* Given a BFD section, try to locate the corresponding ELF section | |
4719 | index. */ | |
4720 | ||
4721 | static bfd_boolean | |
351f65ca L |
4722 | elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
4723 | asection *sec, int *index_return) | |
3b22753a L |
4724 | { |
4725 | if (sec == &_bfd_elf_large_com_section) | |
4726 | { | |
91d6fa6a | 4727 | *index_return = SHN_X86_64_LCOMMON; |
3b22753a L |
4728 | return TRUE; |
4729 | } | |
4730 | return FALSE; | |
4731 | } | |
4732 | ||
4733 | /* Process a symbol. */ | |
4734 | ||
4735 | static void | |
351f65ca L |
4736 | elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, |
4737 | asymbol *asym) | |
3b22753a L |
4738 | { |
4739 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
4740 | ||
4741 | switch (elfsym->internal_elf_sym.st_shndx) | |
4742 | { | |
4743 | case SHN_X86_64_LCOMMON: | |
4744 | asym->section = &_bfd_elf_large_com_section; | |
4745 | asym->value = elfsym->internal_elf_sym.st_size; | |
4746 | /* Common symbol doesn't set BSF_GLOBAL. */ | |
4747 | asym->flags &= ~BSF_GLOBAL; | |
4748 | break; | |
4749 | } | |
4750 | } | |
4751 | ||
4752 | static bfd_boolean | |
351f65ca | 4753 | elf_x86_64_common_definition (Elf_Internal_Sym *sym) |
3b22753a L |
4754 | { |
4755 | return (sym->st_shndx == SHN_COMMON | |
4756 | || sym->st_shndx == SHN_X86_64_LCOMMON); | |
4757 | } | |
4758 | ||
4759 | static unsigned int | |
351f65ca | 4760 | elf_x86_64_common_section_index (asection *sec) |
3b22753a L |
4761 | { |
4762 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
4763 | return SHN_COMMON; | |
4764 | else | |
4765 | return SHN_X86_64_LCOMMON; | |
4766 | } | |
4767 | ||
4768 | static asection * | |
351f65ca | 4769 | elf_x86_64_common_section (asection *sec) |
3b22753a L |
4770 | { |
4771 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
4772 | return bfd_com_section_ptr; | |
4773 | else | |
4774 | return &_bfd_elf_large_com_section; | |
4775 | } | |
4776 | ||
4777 | static bfd_boolean | |
351f65ca L |
4778 | elf_x86_64_merge_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4779 | struct elf_link_hash_entry **sym_hash ATTRIBUTE_UNUSED, | |
4780 | struct elf_link_hash_entry *h, | |
4781 | Elf_Internal_Sym *sym, | |
4782 | asection **psec, | |
4783 | bfd_vma *pvalue ATTRIBUTE_UNUSED, | |
4784 | unsigned int *pold_alignment ATTRIBUTE_UNUSED, | |
4785 | bfd_boolean *skip ATTRIBUTE_UNUSED, | |
4786 | bfd_boolean *override ATTRIBUTE_UNUSED, | |
4787 | bfd_boolean *type_change_ok ATTRIBUTE_UNUSED, | |
4788 | bfd_boolean *size_change_ok ATTRIBUTE_UNUSED, | |
71e7aa7d L |
4789 | bfd_boolean *newdyn ATTRIBUTE_UNUSED, |
4790 | bfd_boolean *newdef, | |
351f65ca L |
4791 | bfd_boolean *newdyncommon ATTRIBUTE_UNUSED, |
4792 | bfd_boolean *newweak ATTRIBUTE_UNUSED, | |
4793 | bfd *abfd ATTRIBUTE_UNUSED, | |
4794 | asection **sec, | |
71e7aa7d L |
4795 | bfd_boolean *olddyn ATTRIBUTE_UNUSED, |
4796 | bfd_boolean *olddef, | |
351f65ca L |
4797 | bfd_boolean *olddyncommon ATTRIBUTE_UNUSED, |
4798 | bfd_boolean *oldweak ATTRIBUTE_UNUSED, | |
4799 | bfd *oldbfd, | |
4800 | asection **oldsec) | |
3b22753a L |
4801 | { |
4802 | /* A normal common symbol and a large common symbol result in a | |
00492999 L |
4803 | normal common symbol. We turn the large common symbol into a |
4804 | normal one. */ | |
71e7aa7d | 4805 | if (!*olddef |
3b22753a | 4806 | && h->root.type == bfd_link_hash_common |
71e7aa7d | 4807 | && !*newdef |
3b22753a | 4808 | && bfd_is_com_section (*sec) |
00492999 | 4809 | && *oldsec != *sec) |
3b22753a | 4810 | { |
00492999 L |
4811 | if (sym->st_shndx == SHN_COMMON |
4812 | && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) != 0) | |
4813 | { | |
4814 | h->root.u.c.p->section | |
4815 | = bfd_make_section_old_way (oldbfd, "COMMON"); | |
4816 | h->root.u.c.p->section->flags = SEC_ALLOC; | |
4817 | } | |
4818 | else if (sym->st_shndx == SHN_X86_64_LCOMMON | |
4819 | && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) == 0) | |
9a2e389a | 4820 | *psec = *sec = bfd_com_section_ptr; |
3b22753a L |
4821 | } |
4822 | ||
4823 | return TRUE; | |
4824 | } | |
4825 | ||
4826 | static int | |
351f65ca L |
4827 | elf_x86_64_additional_program_headers (bfd *abfd, |
4828 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
3b22753a L |
4829 | { |
4830 | asection *s; | |
9a2e389a | 4831 | int count = 0; |
3b22753a L |
4832 | |
4833 | /* Check to see if we need a large readonly segment. */ | |
4834 | s = bfd_get_section_by_name (abfd, ".lrodata"); | |
4835 | if (s && (s->flags & SEC_LOAD)) | |
4836 | count++; | |
4837 | ||
4838 | /* Check to see if we need a large data segment. Since .lbss sections | |
4839 | is placed right after the .bss section, there should be no need for | |
4840 | a large data segment just because of .lbss. */ | |
4841 | s = bfd_get_section_by_name (abfd, ".ldata"); | |
4842 | if (s && (s->flags & SEC_LOAD)) | |
4843 | count++; | |
4844 | ||
4845 | return count; | |
4846 | } | |
4847 | ||
fdc90cb4 JJ |
4848 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
4849 | ||
4850 | static bfd_boolean | |
351f65ca | 4851 | elf_x86_64_hash_symbol (struct elf_link_hash_entry *h) |
fdc90cb4 JJ |
4852 | { |
4853 | if (h->plt.offset != (bfd_vma) -1 | |
4854 | && !h->def_regular | |
4855 | && !h->pointer_equality_needed) | |
4856 | return FALSE; | |
4857 | ||
4858 | return _bfd_elf_hash_symbol (h); | |
4859 | } | |
4860 | ||
c543bf9a L |
4861 | /* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */ |
4862 | ||
4863 | static bfd_boolean | |
4864 | elf_x86_64_relocs_compatible (const bfd_target *input, | |
4865 | const bfd_target *output) | |
4866 | { | |
4867 | return ((xvec_get_elf_backend_data (input)->s->elfclass | |
4868 | == xvec_get_elf_backend_data (output)->s->elfclass) | |
4869 | && _bfd_elf_relocs_compatible (input, output)); | |
4870 | } | |
4871 | ||
9a2e389a | 4872 | static const struct bfd_elf_special_section |
351f65ca | 4873 | elf_x86_64_special_sections[]= |
3b22753a | 4874 | { |
0112cd26 NC |
4875 | { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, |
4876 | { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
4877 | { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE}, | |
4878 | { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
4879 | { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
4880 | { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
4881 | { NULL, 0, 0, 0, 0 } | |
3b22753a L |
4882 | }; |
4883 | ||
70256ad8 AJ |
4884 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_vec |
4885 | #define TARGET_LITTLE_NAME "elf64-x86-64" | |
4886 | #define ELF_ARCH bfd_arch_i386 | |
ae95ffa6 | 4887 | #define ELF_TARGET_ID X86_64_ELF_DATA |
70256ad8 | 4888 | #define ELF_MACHINE_CODE EM_X86_64 |
f7661549 | 4889 | #define ELF_MAXPAGESIZE 0x200000 |
2043964e | 4890 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 4891 | #define ELF_COMMONPAGESIZE 0x1000 |
70256ad8 AJ |
4892 | |
4893 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4894 | #define elf_backend_can_refcount 1 |
70256ad8 AJ |
4895 | #define elf_backend_want_got_plt 1 |
4896 | #define elf_backend_plt_readonly 1 | |
4897 | #define elf_backend_want_plt_sym 0 | |
4898 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE*3) | |
b491616a | 4899 | #define elf_backend_rela_normal 1 |
e41b3a13 | 4900 | #define elf_backend_plt_alignment 4 |
70256ad8 | 4901 | |
351f65ca | 4902 | #define elf_info_to_howto elf_x86_64_info_to_howto |
70256ad8 | 4903 | |
70256ad8 | 4904 | #define bfd_elf64_bfd_link_hash_table_create \ |
351f65ca | 4905 | elf_x86_64_link_hash_table_create |
c25bc9fc | 4906 | #define bfd_elf64_bfd_link_hash_table_free \ |
351f65ca L |
4907 | elf_x86_64_link_hash_table_free |
4908 | #define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup | |
157090f7 | 4909 | #define bfd_elf64_bfd_reloc_name_lookup \ |
351f65ca | 4910 | elf_x86_64_reloc_name_lookup |
70256ad8 | 4911 | |
351f65ca | 4912 | #define elf_backend_adjust_dynamic_symbol elf_x86_64_adjust_dynamic_symbol |
c543bf9a | 4913 | #define elf_backend_relocs_compatible elf_x86_64_relocs_compatible |
351f65ca L |
4914 | #define elf_backend_check_relocs elf_x86_64_check_relocs |
4915 | #define elf_backend_copy_indirect_symbol elf_x86_64_copy_indirect_symbol | |
4916 | #define elf_backend_create_dynamic_sections elf_x86_64_create_dynamic_sections | |
4917 | #define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections | |
4918 | #define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol | |
4919 | #define elf_backend_gc_mark_hook elf_x86_64_gc_mark_hook | |
4920 | #define elf_backend_gc_sweep_hook elf_x86_64_gc_sweep_hook | |
4921 | #define elf_backend_grok_prstatus elf_x86_64_grok_prstatus | |
4922 | #define elf_backend_grok_psinfo elf_x86_64_grok_psinfo | |
8fd79e71 L |
4923 | #ifdef CORE_HEADER |
4924 | #define elf_backend_write_core_note elf_x86_64_write_core_note | |
4925 | #endif | |
351f65ca L |
4926 | #define elf_backend_reloc_type_class elf_x86_64_reloc_type_class |
4927 | #define elf_backend_relocate_section elf_x86_64_relocate_section | |
4928 | #define elf_backend_size_dynamic_sections elf_x86_64_size_dynamic_sections | |
4929 | #define elf_backend_always_size_sections elf_x86_64_always_size_sections | |
74541ad4 | 4930 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
351f65ca | 4931 | #define elf_backend_plt_sym_val elf_x86_64_plt_sym_val |
407443a3 | 4932 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
351f65ca | 4933 | #define bfd_elf64_mkobject elf_x86_64_mkobject |
8d88c4ca | 4934 | |
d2b2c203 | 4935 | #define elf_backend_section_from_shdr \ |
351f65ca | 4936 | elf_x86_64_section_from_shdr |
d2b2c203 | 4937 | |
3b22753a | 4938 | #define elf_backend_section_from_bfd_section \ |
351f65ca | 4939 | elf_x86_64_elf_section_from_bfd_section |
3b22753a | 4940 | #define elf_backend_add_symbol_hook \ |
351f65ca | 4941 | elf_x86_64_add_symbol_hook |
3b22753a | 4942 | #define elf_backend_symbol_processing \ |
351f65ca | 4943 | elf_x86_64_symbol_processing |
3b22753a | 4944 | #define elf_backend_common_section_index \ |
351f65ca | 4945 | elf_x86_64_common_section_index |
3b22753a | 4946 | #define elf_backend_common_section \ |
351f65ca | 4947 | elf_x86_64_common_section |
3b22753a | 4948 | #define elf_backend_common_definition \ |
351f65ca | 4949 | elf_x86_64_common_definition |
3b22753a | 4950 | #define elf_backend_merge_symbol \ |
351f65ca | 4951 | elf_x86_64_merge_symbol |
3b22753a | 4952 | #define elf_backend_special_sections \ |
351f65ca | 4953 | elf_x86_64_special_sections |
3b22753a | 4954 | #define elf_backend_additional_program_headers \ |
351f65ca | 4955 | elf_x86_64_additional_program_headers |
fdc90cb4 | 4956 | #define elf_backend_hash_symbol \ |
351f65ca | 4957 | elf_x86_64_hash_symbol |
3b22753a | 4958 | |
d8045f23 NC |
4959 | #define elf_backend_post_process_headers _bfd_elf_set_osabi |
4960 | ||
8d88c4ca | 4961 | #include "elf64-target.h" |
9d7cbccd NC |
4962 | |
4963 | /* FreeBSD support. */ | |
4964 | ||
4965 | #undef TARGET_LITTLE_SYM | |
4966 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_freebsd_vec | |
4967 | #undef TARGET_LITTLE_NAME | |
4968 | #define TARGET_LITTLE_NAME "elf64-x86-64-freebsd" | |
4969 | ||
d1036acb L |
4970 | #undef ELF_OSABI |
4971 | #define ELF_OSABI ELFOSABI_FREEBSD | |
9d7cbccd | 4972 | |
9d7cbccd NC |
4973 | #undef elf64_bed |
4974 | #define elf64_bed elf64_x86_64_fbsd_bed | |
4975 | ||
4976 | #include "elf64-target.h" | |
8a9036a4 | 4977 | |
a6cc6b3b RO |
4978 | /* Solaris 2 support. */ |
4979 | ||
4980 | #undef TARGET_LITTLE_SYM | |
4981 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_sol2_vec | |
4982 | #undef TARGET_LITTLE_NAME | |
4983 | #define TARGET_LITTLE_NAME "elf64-x86-64-sol2" | |
4984 | ||
4985 | /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE | |
4986 | objects won't be recognized. */ | |
4987 | #undef ELF_OSABI | |
4988 | ||
4989 | #undef elf64_bed | |
4990 | #define elf64_bed elf64_x86_64_sol2_bed | |
4991 | ||
7dc98aea RO |
4992 | /* The 64-bit static TLS arena size is rounded to the nearest 16-byte |
4993 | boundary. */ | |
4994 | #undef elf_backend_static_tls_alignment | |
4995 | #define elf_backend_static_tls_alignment 16 | |
4996 | ||
a6cc6b3b RO |
4997 | /* The Solaris 2 ABI requires a plt symbol on all platforms. |
4998 | ||
4999 | Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output | |
5000 | File, p.63. */ | |
5001 | #undef elf_backend_want_plt_sym | |
5002 | #define elf_backend_want_plt_sym 1 | |
5003 | ||
5004 | #include "elf64-target.h" | |
5005 | ||
8a9036a4 L |
5006 | /* Intel L1OM support. */ |
5007 | ||
5008 | static bfd_boolean | |
5009 | elf64_l1om_elf_object_p (bfd *abfd) | |
5010 | { | |
5011 | /* Set the right machine number for an L1OM elf64 file. */ | |
5012 | bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om); | |
5013 | return TRUE; | |
5014 | } | |
5015 | ||
5016 | #undef TARGET_LITTLE_SYM | |
5017 | #define TARGET_LITTLE_SYM bfd_elf64_l1om_vec | |
5018 | #undef TARGET_LITTLE_NAME | |
5019 | #define TARGET_LITTLE_NAME "elf64-l1om" | |
5020 | #undef ELF_ARCH | |
5021 | #define ELF_ARCH bfd_arch_l1om | |
5022 | ||
5023 | #undef ELF_MACHINE_CODE | |
5024 | #define ELF_MACHINE_CODE EM_L1OM | |
5025 | ||
5026 | #undef ELF_OSABI | |
5027 | ||
5028 | #undef elf64_bed | |
5029 | #define elf64_bed elf64_l1om_bed | |
5030 | ||
5031 | #undef elf_backend_object_p | |
5032 | #define elf_backend_object_p elf64_l1om_elf_object_p | |
5033 | ||
7dc98aea | 5034 | #undef elf_backend_static_tls_alignment |
8a9036a4 | 5035 | |
1a0c107f L |
5036 | #undef elf_backend_want_plt_sym |
5037 | #define elf_backend_want_plt_sym 0 | |
5038 | ||
8a9036a4 L |
5039 | #include "elf64-target.h" |
5040 | ||
5041 | /* FreeBSD L1OM support. */ | |
5042 | ||
5043 | #undef TARGET_LITTLE_SYM | |
5044 | #define TARGET_LITTLE_SYM bfd_elf64_l1om_freebsd_vec | |
5045 | #undef TARGET_LITTLE_NAME | |
5046 | #define TARGET_LITTLE_NAME "elf64-l1om-freebsd" | |
5047 | ||
5048 | #undef ELF_OSABI | |
5049 | #define ELF_OSABI ELFOSABI_FREEBSD | |
5050 | ||
5051 | #undef elf64_bed | |
5052 | #define elf64_bed elf64_l1om_fbsd_bed | |
5053 | ||
8a9036a4 | 5054 | #include "elf64-target.h" |
351f65ca | 5055 | |
7a9068fe L |
5056 | /* Intel K1OM support. */ |
5057 | ||
5058 | static bfd_boolean | |
5059 | elf64_k1om_elf_object_p (bfd *abfd) | |
5060 | { | |
5061 | /* Set the right machine number for an K1OM elf64 file. */ | |
5062 | bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om); | |
5063 | return TRUE; | |
5064 | } | |
5065 | ||
5066 | #undef TARGET_LITTLE_SYM | |
5067 | #define TARGET_LITTLE_SYM bfd_elf64_k1om_vec | |
5068 | #undef TARGET_LITTLE_NAME | |
5069 | #define TARGET_LITTLE_NAME "elf64-k1om" | |
5070 | #undef ELF_ARCH | |
5071 | #define ELF_ARCH bfd_arch_k1om | |
5072 | ||
5073 | #undef ELF_MACHINE_CODE | |
5074 | #define ELF_MACHINE_CODE EM_K1OM | |
5075 | ||
5076 | #undef ELF_OSABI | |
5077 | ||
5078 | #undef elf64_bed | |
5079 | #define elf64_bed elf64_k1om_bed | |
5080 | ||
5081 | #undef elf_backend_object_p | |
5082 | #define elf_backend_object_p elf64_k1om_elf_object_p | |
5083 | ||
5084 | #undef elf_backend_static_tls_alignment | |
5085 | ||
5086 | #undef elf_backend_want_plt_sym | |
5087 | #define elf_backend_want_plt_sym 0 | |
5088 | ||
5089 | #include "elf64-target.h" | |
5090 | ||
5091 | /* FreeBSD K1OM support. */ | |
5092 | ||
5093 | #undef TARGET_LITTLE_SYM | |
5094 | #define TARGET_LITTLE_SYM bfd_elf64_k1om_freebsd_vec | |
5095 | #undef TARGET_LITTLE_NAME | |
5096 | #define TARGET_LITTLE_NAME "elf64-k1om-freebsd" | |
5097 | ||
5098 | #undef ELF_OSABI | |
5099 | #define ELF_OSABI ELFOSABI_FREEBSD | |
5100 | ||
5101 | #undef elf64_bed | |
5102 | #define elf64_bed elf64_k1om_fbsd_bed | |
5103 | ||
5104 | #include "elf64-target.h" | |
5105 | ||
351f65ca L |
5106 | /* 32bit x86-64 support. */ |
5107 | ||
5108 | static bfd_boolean | |
5109 | elf32_x86_64_elf_object_p (bfd *abfd) | |
5110 | { | |
5111 | /* Set the right machine number for an x86-64 elf32 file. */ | |
5112 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32); | |
5113 | return TRUE; | |
5114 | } | |
5115 | ||
5116 | #undef TARGET_LITTLE_SYM | |
5117 | #define TARGET_LITTLE_SYM bfd_elf32_x86_64_vec | |
5118 | #undef TARGET_LITTLE_NAME | |
5119 | #define TARGET_LITTLE_NAME "elf32-x86-64" | |
5120 | ||
5121 | #undef ELF_ARCH | |
5122 | #define ELF_ARCH bfd_arch_i386 | |
5123 | ||
5124 | #undef ELF_MACHINE_CODE | |
5125 | #define ELF_MACHINE_CODE EM_X86_64 | |
5126 | ||
5127 | #define bfd_elf32_bfd_link_hash_table_create \ | |
5128 | elf_x86_64_link_hash_table_create | |
5129 | #define bfd_elf32_bfd_link_hash_table_free \ | |
5130 | elf_x86_64_link_hash_table_free | |
5131 | #define bfd_elf32_bfd_reloc_type_lookup \ | |
5132 | elf_x86_64_reloc_type_lookup | |
5133 | #define bfd_elf32_bfd_reloc_name_lookup \ | |
5134 | elf_x86_64_reloc_name_lookup | |
5135 | #define bfd_elf32_mkobject \ | |
5136 | elf_x86_64_mkobject | |
5137 | ||
5138 | #undef ELF_OSABI | |
5139 | ||
351f65ca L |
5140 | #undef elf_backend_object_p |
5141 | #define elf_backend_object_p \ | |
5142 | elf32_x86_64_elf_object_p | |
5143 | ||
5144 | #undef elf_backend_bfd_from_remote_memory | |
5145 | #define elf_backend_bfd_from_remote_memory \ | |
5146 | _bfd_elf32_bfd_from_remote_memory | |
5147 | ||
5148 | #undef elf_backend_size_info | |
5149 | #define elf_backend_size_info \ | |
5150 | _bfd_elf32_size_info | |
5151 | ||
5152 | #include "elf32-target.h" |