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), | |
64d25c44 L |
167 | HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
168 | bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE, | |
169 | MINUS_ONE, FALSE), | |
fe4770f4 | 170 | |
a33d77bc JB |
171 | /* We have a gap in the reloc numbers here. |
172 | R_X86_64_standard counts the number up to this point, and | |
173 | R_X86_64_vt_offset is the value to subtract from a reloc type of | |
174 | R_X86_64_GNU_VT* to form an index into this table. */ | |
cbe950e9 | 175 | #define R_X86_64_standard (R_X86_64_IRELATIVE + 1) |
a33d77bc JB |
176 | #define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard) |
177 | ||
fe4770f4 | 178 | /* GNU extension to record C++ vtable hierarchy. */ |
b34976b6 AM |
179 | HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
180 | NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE), | |
fe4770f4 AJ |
181 | |
182 | /* GNU extension to record C++ vtable member usage. */ | |
b34976b6 AM |
183 | HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
184 | _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0, | |
d7921315 L |
185 | FALSE), |
186 | ||
187 | /* Use complain_overflow_bitfield on R_X86_64_32 for x32. */ | |
188 | HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
189 | bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff, | |
190 | FALSE) | |
8d88c4ca NC |
191 | }; |
192 | ||
d8045f23 NC |
193 | #define IS_X86_64_PCREL_TYPE(TYPE) \ |
194 | ( ((TYPE) == R_X86_64_PC8) \ | |
195 | || ((TYPE) == R_X86_64_PC16) \ | |
196 | || ((TYPE) == R_X86_64_PC32) \ | |
197 | || ((TYPE) == R_X86_64_PC64)) | |
198 | ||
8d88c4ca | 199 | /* Map BFD relocs to the x86_64 elf relocs. */ |
70256ad8 AJ |
200 | struct elf_reloc_map |
201 | { | |
8d88c4ca NC |
202 | bfd_reloc_code_real_type bfd_reloc_val; |
203 | unsigned char elf_reloc_val; | |
204 | }; | |
205 | ||
dc810e39 | 206 | static const struct elf_reloc_map x86_64_reloc_map[] = |
8d88c4ca | 207 | { |
70256ad8 AJ |
208 | { BFD_RELOC_NONE, R_X86_64_NONE, }, |
209 | { BFD_RELOC_64, R_X86_64_64, }, | |
210 | { BFD_RELOC_32_PCREL, R_X86_64_PC32, }, | |
211 | { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,}, | |
212 | { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,}, | |
213 | { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, }, | |
214 | { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, }, | |
215 | { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, }, | |
216 | { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, }, | |
217 | { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, }, | |
218 | { BFD_RELOC_32, R_X86_64_32, }, | |
219 | { BFD_RELOC_X86_64_32S, R_X86_64_32S, }, | |
220 | { BFD_RELOC_16, R_X86_64_16, }, | |
221 | { BFD_RELOC_16_PCREL, R_X86_64_PC16, }, | |
222 | { BFD_RELOC_8, R_X86_64_8, }, | |
223 | { BFD_RELOC_8_PCREL, R_X86_64_PC8, }, | |
bffbf940 JJ |
224 | { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, }, |
225 | { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, }, | |
226 | { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, }, | |
227 | { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, }, | |
228 | { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, }, | |
229 | { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, }, | |
230 | { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, }, | |
231 | { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, }, | |
d6ab8113 JB |
232 | { BFD_RELOC_64_PCREL, R_X86_64_PC64, }, |
233 | { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, }, | |
234 | { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, }, | |
7b81dfbb AJ |
235 | { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, }, |
236 | { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, }, | |
237 | { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, }, | |
238 | { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, }, | |
239 | { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, }, | |
67a4f2b7 AO |
240 | { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, }, |
241 | { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, }, | |
242 | { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, }, | |
cbe950e9 | 243 | { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, }, |
fe4770f4 AJ |
244 | { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, }, |
245 | { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, }, | |
8d88c4ca NC |
246 | }; |
247 | ||
67a4f2b7 | 248 | static reloc_howto_type * |
351f65ca | 249 | elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type) |
67a4f2b7 AO |
250 | { |
251 | unsigned i; | |
252 | ||
d7921315 L |
253 | if (r_type == (unsigned int) R_X86_64_32) |
254 | { | |
255 | if (ABI_64_P (abfd)) | |
256 | i = r_type; | |
257 | else | |
258 | i = ARRAY_SIZE (x86_64_elf_howto_table) - 1; | |
259 | } | |
260 | else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT | |
261 | || r_type >= (unsigned int) R_X86_64_max) | |
67a4f2b7 AO |
262 | { |
263 | if (r_type >= (unsigned int) R_X86_64_standard) | |
264 | { | |
265 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
266 | abfd, (int) r_type); | |
267 | r_type = R_X86_64_NONE; | |
268 | } | |
269 | i = r_type; | |
270 | } | |
271 | else | |
272 | i = r_type - (unsigned int) R_X86_64_vt_offset; | |
273 | BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type); | |
274 | return &x86_64_elf_howto_table[i]; | |
275 | } | |
8d88c4ca NC |
276 | |
277 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
278 | static reloc_howto_type * | |
351f65ca L |
279 | elf_x86_64_reloc_type_lookup (bfd *abfd, |
280 | bfd_reloc_code_real_type code) | |
8d88c4ca NC |
281 | { |
282 | unsigned int i; | |
27482721 | 283 | |
8d88c4ca NC |
284 | for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map); |
285 | i++) | |
286 | { | |
287 | if (x86_64_reloc_map[i].bfd_reloc_val == code) | |
351f65ca L |
288 | return elf_x86_64_rtype_to_howto (abfd, |
289 | x86_64_reloc_map[i].elf_reloc_val); | |
8d88c4ca NC |
290 | } |
291 | return 0; | |
292 | } | |
293 | ||
157090f7 | 294 | static reloc_howto_type * |
d7921315 | 295 | elf_x86_64_reloc_name_lookup (bfd *abfd, |
351f65ca | 296 | const char *r_name) |
157090f7 AM |
297 | { |
298 | unsigned int i; | |
299 | ||
d7921315 L |
300 | if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0) |
301 | { | |
302 | /* Get x32 R_X86_64_32. */ | |
303 | reloc_howto_type *reloc | |
304 | = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1]; | |
305 | BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32); | |
306 | return reloc; | |
307 | } | |
308 | ||
309 | for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++) | |
157090f7 AM |
310 | if (x86_64_elf_howto_table[i].name != NULL |
311 | && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0) | |
312 | return &x86_64_elf_howto_table[i]; | |
313 | ||
314 | return NULL; | |
315 | } | |
316 | ||
8d88c4ca | 317 | /* Given an x86_64 ELF reloc type, fill in an arelent structure. */ |
8da6118f | 318 | |
8d88c4ca | 319 | static void |
351f65ca L |
320 | elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
321 | Elf_Internal_Rela *dst) | |
8d88c4ca | 322 | { |
67a4f2b7 | 323 | unsigned r_type; |
8d88c4ca | 324 | |
351f65ca L |
325 | r_type = ELF32_R_TYPE (dst->r_info); |
326 | cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type); | |
8d88c4ca NC |
327 | BFD_ASSERT (r_type == cache_ptr->howto->type); |
328 | } | |
70256ad8 | 329 | \f |
3bab7989 | 330 | /* Support for core dump NOTE sections. */ |
b34976b6 | 331 | static bfd_boolean |
351f65ca | 332 | elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
333 | { |
334 | int offset; | |
eea6121a | 335 | size_t size; |
3bab7989 ML |
336 | |
337 | switch (note->descsz) | |
338 | { | |
339 | default: | |
b34976b6 | 340 | return FALSE; |
3bab7989 | 341 | |
bcd823f1 L |
342 | case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */ |
343 | /* pr_cursig */ | |
344 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
345 | ||
346 | /* pr_pid */ | |
347 | elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
348 | ||
349 | /* pr_reg */ | |
350 | offset = 72; | |
351 | size = 216; | |
352 | ||
353 | break; | |
354 | ||
3bab7989 ML |
355 | case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */ |
356 | /* pr_cursig */ | |
cedb70c5 | 357 | elf_tdata (abfd)->core_signal |
3bab7989 ML |
358 | = bfd_get_16 (abfd, note->descdata + 12); |
359 | ||
360 | /* pr_pid */ | |
261b8d08 | 361 | elf_tdata (abfd)->core_lwpid |
3bab7989 ML |
362 | = bfd_get_32 (abfd, note->descdata + 32); |
363 | ||
364 | /* pr_reg */ | |
365 | offset = 112; | |
eea6121a | 366 | size = 216; |
3bab7989 ML |
367 | |
368 | break; | |
369 | } | |
370 | ||
371 | /* Make a ".reg/999" section. */ | |
372 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 373 | size, note->descpos + offset); |
3bab7989 ML |
374 | } |
375 | ||
b34976b6 | 376 | static bfd_boolean |
351f65ca | 377 | elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
378 | { |
379 | switch (note->descsz) | |
380 | { | |
381 | default: | |
b34976b6 | 382 | return FALSE; |
3bab7989 | 383 | |
bcd823f1 L |
384 | case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */ |
385 | elf_tdata (abfd)->core_pid | |
386 | = bfd_get_32 (abfd, note->descdata + 12); | |
387 | elf_tdata (abfd)->core_program | |
388 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
389 | elf_tdata (abfd)->core_command | |
390 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
391 | break; | |
392 | ||
3bab7989 | 393 | case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */ |
261b8d08 PA |
394 | elf_tdata (abfd)->core_pid |
395 | = bfd_get_32 (abfd, note->descdata + 24); | |
3bab7989 ML |
396 | elf_tdata (abfd)->core_program |
397 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
398 | elf_tdata (abfd)->core_command | |
399 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
400 | } | |
401 | ||
402 | /* Note that for some reason, a spurious space is tacked | |
403 | onto the end of the args in some (at least one anyway) | |
404 | implementations, so strip it off if it exists. */ | |
405 | ||
406 | { | |
407 | char *command = elf_tdata (abfd)->core_command; | |
408 | int n = strlen (command); | |
409 | ||
410 | if (0 < n && command[n - 1] == ' ') | |
411 | command[n - 1] = '\0'; | |
412 | } | |
413 | ||
b34976b6 | 414 | return TRUE; |
3bab7989 | 415 | } |
8fd79e71 L |
416 | |
417 | #ifdef CORE_HEADER | |
418 | static char * | |
419 | elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
420 | int note_type, ...) | |
421 | { | |
422 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8fd79e71 L |
423 | va_list ap; |
424 | const char *fname, *psargs; | |
425 | long pid; | |
426 | int cursig; | |
427 | const void *gregs; | |
428 | ||
429 | switch (note_type) | |
430 | { | |
431 | default: | |
432 | return NULL; | |
433 | ||
434 | case NT_PRPSINFO: | |
435 | va_start (ap, note_type); | |
436 | fname = va_arg (ap, const char *); | |
437 | psargs = va_arg (ap, const char *); | |
438 | va_end (ap); | |
439 | ||
440 | if (bed->s->elfclass == ELFCLASS32) | |
441 | { | |
442 | prpsinfo32_t data; | |
443 | memset (&data, 0, sizeof (data)); | |
444 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
445 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
e85c6a70 JK |
446 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
447 | &data, sizeof (data)); | |
8fd79e71 L |
448 | } |
449 | else | |
450 | { | |
451 | prpsinfo_t data; | |
452 | memset (&data, 0, sizeof (data)); | |
453 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
454 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
e85c6a70 JK |
455 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
456 | &data, sizeof (data)); | |
8fd79e71 | 457 | } |
e85c6a70 | 458 | /* NOTREACHED */ |
8fd79e71 L |
459 | |
460 | case NT_PRSTATUS: | |
461 | va_start (ap, note_type); | |
462 | pid = va_arg (ap, long); | |
463 | cursig = va_arg (ap, int); | |
464 | gregs = va_arg (ap, const void *); | |
465 | va_end (ap); | |
466 | ||
467 | if (bed->s->elfclass == ELFCLASS32) | |
468 | { | |
469 | if (bed->elf_machine_code == EM_X86_64) | |
470 | { | |
471 | prstatusx32_t prstat; | |
472 | memset (&prstat, 0, sizeof (prstat)); | |
473 | prstat.pr_pid = pid; | |
474 | prstat.pr_cursig = cursig; | |
475 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
476 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
477 | &prstat, sizeof (prstat)); | |
8fd79e71 L |
478 | } |
479 | else | |
480 | { | |
481 | prstatus32_t prstat; | |
482 | memset (&prstat, 0, sizeof (prstat)); | |
483 | prstat.pr_pid = pid; | |
484 | prstat.pr_cursig = cursig; | |
485 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
486 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
487 | &prstat, sizeof (prstat)); | |
8fd79e71 L |
488 | } |
489 | } | |
490 | else | |
491 | { | |
492 | prstatus_t prstat; | |
493 | memset (&prstat, 0, sizeof (prstat)); | |
494 | prstat.pr_pid = pid; | |
495 | prstat.pr_cursig = cursig; | |
496 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
497 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
498 | &prstat, sizeof (prstat)); | |
8fd79e71 | 499 | } |
8fd79e71 | 500 | } |
e85c6a70 | 501 | /* NOTREACHED */ |
8fd79e71 L |
502 | } |
503 | #endif | |
3bab7989 | 504 | \f |
407443a3 | 505 | /* Functions for the x86-64 ELF linker. */ |
70256ad8 | 506 | |
407443a3 | 507 | /* The name of the dynamic interpreter. This is put in the .interp |
70256ad8 AJ |
508 | section. */ |
509 | ||
351f65ca | 510 | #define ELF64_DYNAMIC_INTERPRETER "/lib/ld64.so.1" |
eec9dd95 | 511 | #define ELF32_DYNAMIC_INTERPRETER "/lib/ldx32.so.1" |
70256ad8 | 512 | |
d40d037c AJ |
513 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
514 | copying dynamic variables from a shared lib into an app's dynbss | |
515 | section, and instead use a dynamic relocation to point into the | |
516 | shared lib. */ | |
517 | #define ELIMINATE_COPY_RELOCS 1 | |
518 | ||
70256ad8 AJ |
519 | /* The size in bytes of an entry in the global offset table. */ |
520 | ||
521 | #define GOT_ENTRY_SIZE 8 | |
8d88c4ca | 522 | |
70256ad8 | 523 | /* The size in bytes of an entry in the procedure linkage table. */ |
8d88c4ca | 524 | |
70256ad8 AJ |
525 | #define PLT_ENTRY_SIZE 16 |
526 | ||
527 | /* The first entry in a procedure linkage table looks like this. See the | |
528 | SVR4 ABI i386 supplement and the x86-64 ABI to see how this works. */ | |
529 | ||
351f65ca | 530 | static const bfd_byte elf_x86_64_plt0_entry[PLT_ENTRY_SIZE] = |
70256ad8 | 531 | { |
653165cc AJ |
532 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ |
533 | 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */ | |
10efb593 | 534 | 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */ |
70256ad8 AJ |
535 | }; |
536 | ||
537 | /* Subsequent entries in a procedure linkage table look like this. */ | |
538 | ||
351f65ca | 539 | static const bfd_byte elf_x86_64_plt_entry[PLT_ENTRY_SIZE] = |
70256ad8 | 540 | { |
653165cc | 541 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ |
407443a3 | 542 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ |
653165cc | 543 | 0x68, /* pushq immediate */ |
70256ad8 AJ |
544 | 0, 0, 0, 0, /* replaced with index into relocation table. */ |
545 | 0xe9, /* jmp relative */ | |
546 | 0, 0, 0, 0 /* replaced with offset to start of .plt0. */ | |
547 | }; | |
548 | ||
e41b3a13 JJ |
549 | /* .eh_frame covering the .plt section. */ |
550 | ||
551 | static const bfd_byte elf_x86_64_eh_frame_plt[] = | |
552 | { | |
553 | #define PLT_CIE_LENGTH 20 | |
554 | #define PLT_FDE_LENGTH 36 | |
555 | #define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8 | |
556 | #define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12 | |
557 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
558 | 0, 0, 0, 0, /* CIE ID */ | |
559 | 1, /* CIE version */ | |
560 | 'z', 'R', 0, /* Augmentation string */ | |
561 | 1, /* Code alignment factor */ | |
562 | 0x78, /* Data alignment factor */ | |
563 | 16, /* Return address column */ | |
564 | 1, /* Augmentation size */ | |
565 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
566 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
567 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
568 | DW_CFA_nop, DW_CFA_nop, | |
569 | ||
570 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
571 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
572 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
573 | 0, 0, 0, 0, /* .plt size goes here */ | |
574 | 0, /* Augmentation size */ | |
575 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
576 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
577 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
578 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
579 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
580 | 11, /* Block length */ | |
581 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
582 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
583 | DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge, | |
584 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
585 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
586 | }; | |
587 | ||
70256ad8 AJ |
588 | /* x86-64 ELF linker hash entry. */ |
589 | ||
351f65ca | 590 | struct elf_x86_64_link_hash_entry |
70256ad8 | 591 | { |
c434dee6 | 592 | struct elf_link_hash_entry elf; |
70256ad8 | 593 | |
c434dee6 | 594 | /* Track dynamic relocs copied for this symbol. */ |
e03a8ed8 | 595 | struct elf_dyn_relocs *dyn_relocs; |
bffbf940 JJ |
596 | |
597 | #define GOT_UNKNOWN 0 | |
598 | #define GOT_NORMAL 1 | |
599 | #define GOT_TLS_GD 2 | |
600 | #define GOT_TLS_IE 3 | |
67a4f2b7 AO |
601 | #define GOT_TLS_GDESC 4 |
602 | #define GOT_TLS_GD_BOTH_P(type) \ | |
603 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
604 | #define GOT_TLS_GD_P(type) \ | |
605 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
606 | #define GOT_TLS_GDESC_P(type) \ | |
607 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
608 | #define GOT_TLS_GD_ANY_P(type) \ | |
609 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
bffbf940 | 610 | unsigned char tls_type; |
67a4f2b7 AO |
611 | |
612 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, | |
613 | starting at the end of the jump table. */ | |
614 | bfd_vma tlsdesc_got; | |
bffbf940 JJ |
615 | }; |
616 | ||
351f65ca L |
617 | #define elf_x86_64_hash_entry(ent) \ |
618 | ((struct elf_x86_64_link_hash_entry *)(ent)) | |
bffbf940 | 619 | |
351f65ca | 620 | struct elf_x86_64_obj_tdata |
bffbf940 JJ |
621 | { |
622 | struct elf_obj_tdata root; | |
623 | ||
624 | /* tls_type for each local got entry. */ | |
625 | char *local_got_tls_type; | |
67a4f2b7 AO |
626 | |
627 | /* GOTPLT entries for TLS descriptors. */ | |
628 | bfd_vma *local_tlsdesc_gotent; | |
70256ad8 AJ |
629 | }; |
630 | ||
351f65ca L |
631 | #define elf_x86_64_tdata(abfd) \ |
632 | ((struct elf_x86_64_obj_tdata *) (abfd)->tdata.any) | |
bffbf940 | 633 | |
351f65ca L |
634 | #define elf_x86_64_local_got_tls_type(abfd) \ |
635 | (elf_x86_64_tdata (abfd)->local_got_tls_type) | |
bffbf940 | 636 | |
351f65ca L |
637 | #define elf_x86_64_local_tlsdesc_gotent(abfd) \ |
638 | (elf_x86_64_tdata (abfd)->local_tlsdesc_gotent) | |
bffbf940 | 639 | |
0ffa91dd NC |
640 | #define is_x86_64_elf(bfd) \ |
641 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
642 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 643 | && elf_object_id (bfd) == X86_64_ELF_DATA) |
0ffa91dd NC |
644 | |
645 | static bfd_boolean | |
351f65ca | 646 | elf_x86_64_mkobject (bfd *abfd) |
0ffa91dd | 647 | { |
351f65ca | 648 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_x86_64_obj_tdata), |
4dfe6ac6 | 649 | X86_64_ELF_DATA); |
0ffa91dd NC |
650 | } |
651 | ||
c434dee6 | 652 | /* x86-64 ELF linker hash table. */ |
8d88c4ca | 653 | |
351f65ca | 654 | struct elf_x86_64_link_hash_table |
407443a3 | 655 | { |
c434dee6 | 656 | struct elf_link_hash_table elf; |
70256ad8 | 657 | |
c434dee6 | 658 | /* Short-cuts to get to dynamic linker sections. */ |
c434dee6 AJ |
659 | asection *sdynbss; |
660 | asection *srelbss; | |
e41b3a13 | 661 | asection *plt_eh_frame; |
70256ad8 | 662 | |
4dfe6ac6 NC |
663 | union |
664 | { | |
bffbf940 JJ |
665 | bfd_signed_vma refcount; |
666 | bfd_vma offset; | |
667 | } tls_ld_got; | |
668 | ||
67a4f2b7 AO |
669 | /* The amount of space used by the jump slots in the GOT. */ |
670 | bfd_vma sgotplt_jump_table_size; | |
671 | ||
87d72d41 AM |
672 | /* Small local sym cache. */ |
673 | struct sym_cache sym_cache; | |
9f03412a | 674 | |
351f65ca L |
675 | bfd_vma (*r_info) (bfd_vma, bfd_vma); |
676 | bfd_vma (*r_sym) (bfd_vma); | |
248775ba | 677 | unsigned int pointer_r_type; |
351f65ca L |
678 | const char *dynamic_interpreter; |
679 | int dynamic_interpreter_size; | |
680 | ||
9f03412a AO |
681 | /* _TLS_MODULE_BASE_ symbol. */ |
682 | struct bfd_link_hash_entry *tls_module_base; | |
c25bc9fc L |
683 | |
684 | /* Used by local STT_GNU_IFUNC symbols. */ | |
685 | htab_t loc_hash_table; | |
4dfe6ac6 NC |
686 | void * loc_hash_memory; |
687 | ||
688 | /* The offset into splt of the PLT entry for the TLS descriptor | |
689 | resolver. Special values are 0, if not necessary (or not found | |
690 | to be necessary yet), and -1 if needed but not determined | |
691 | yet. */ | |
692 | bfd_vma tlsdesc_plt; | |
693 | /* The offset into sgot of the GOT entry used by the PLT entry | |
694 | above. */ | |
695 | bfd_vma tlsdesc_got; | |
e1f98742 L |
696 | |
697 | /* The index of the next R_X86_64_JUMP_SLOT entry in .rela.plt. */ | |
698 | bfd_vma next_jump_slot_index; | |
699 | /* The index of the next R_X86_64_IRELATIVE entry in .rela.plt. */ | |
700 | bfd_vma next_irelative_index; | |
c434dee6 | 701 | }; |
70256ad8 AJ |
702 | |
703 | /* Get the x86-64 ELF linker hash table from a link_info structure. */ | |
8d88c4ca | 704 | |
351f65ca | 705 | #define elf_x86_64_hash_table(p) \ |
4dfe6ac6 | 706 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
351f65ca | 707 | == X86_64_ELF_DATA ? ((struct elf_x86_64_link_hash_table *) ((p)->hash)) : NULL) |
8d88c4ca | 708 | |
351f65ca | 709 | #define elf_x86_64_compute_jump_table_size(htab) \ |
6de2ae4a | 710 | ((htab)->elf.srelplt->reloc_count * GOT_ENTRY_SIZE) |
67a4f2b7 | 711 | |
407443a3 | 712 | /* Create an entry in an x86-64 ELF linker hash table. */ |
70256ad8 AJ |
713 | |
714 | static struct bfd_hash_entry * | |
351f65ca L |
715 | elf_x86_64_link_hash_newfunc (struct bfd_hash_entry *entry, |
716 | struct bfd_hash_table *table, | |
717 | const char *string) | |
70256ad8 | 718 | { |
70256ad8 | 719 | /* Allocate the structure if it has not already been allocated by a |
c434dee6 AJ |
720 | subclass. */ |
721 | if (entry == NULL) | |
722 | { | |
a50b1753 NC |
723 | entry = (struct bfd_hash_entry *) |
724 | bfd_hash_allocate (table, | |
351f65ca | 725 | sizeof (struct elf_x86_64_link_hash_entry)); |
c434dee6 AJ |
726 | if (entry == NULL) |
727 | return entry; | |
728 | } | |
70256ad8 AJ |
729 | |
730 | /* Call the allocation method of the superclass. */ | |
c434dee6 AJ |
731 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
732 | if (entry != NULL) | |
70256ad8 | 733 | { |
351f65ca | 734 | struct elf_x86_64_link_hash_entry *eh; |
c434dee6 | 735 | |
351f65ca | 736 | eh = (struct elf_x86_64_link_hash_entry *) entry; |
c434dee6 | 737 | eh->dyn_relocs = NULL; |
bffbf940 | 738 | eh->tls_type = GOT_UNKNOWN; |
67a4f2b7 | 739 | eh->tlsdesc_got = (bfd_vma) -1; |
70256ad8 AJ |
740 | } |
741 | ||
c434dee6 | 742 | return entry; |
70256ad8 AJ |
743 | } |
744 | ||
c25bc9fc L |
745 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
746 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
747 | as global symbol. We reuse indx and dynstr_index for local symbol | |
748 | hash since they aren't used by global symbols in this backend. */ | |
749 | ||
750 | static hashval_t | |
351f65ca | 751 | elf_x86_64_local_htab_hash (const void *ptr) |
c25bc9fc L |
752 | { |
753 | struct elf_link_hash_entry *h | |
754 | = (struct elf_link_hash_entry *) ptr; | |
d2149d72 | 755 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); |
c25bc9fc L |
756 | } |
757 | ||
758 | /* Compare local hash entries. */ | |
759 | ||
760 | static int | |
351f65ca | 761 | elf_x86_64_local_htab_eq (const void *ptr1, const void *ptr2) |
c25bc9fc L |
762 | { |
763 | struct elf_link_hash_entry *h1 | |
764 | = (struct elf_link_hash_entry *) ptr1; | |
765 | struct elf_link_hash_entry *h2 | |
766 | = (struct elf_link_hash_entry *) ptr2; | |
767 | ||
768 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
769 | } | |
770 | ||
771 | /* Find and/or create a hash entry for local symbol. */ | |
772 | ||
773 | static struct elf_link_hash_entry * | |
351f65ca L |
774 | elf_x86_64_get_local_sym_hash (struct elf_x86_64_link_hash_table *htab, |
775 | bfd *abfd, const Elf_Internal_Rela *rel, | |
776 | bfd_boolean create) | |
c25bc9fc | 777 | { |
351f65ca | 778 | struct elf_x86_64_link_hash_entry e, *ret; |
c25bc9fc | 779 | asection *sec = abfd->sections; |
d2149d72 | 780 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, |
351f65ca | 781 | htab->r_sym (rel->r_info)); |
c25bc9fc L |
782 | void **slot; |
783 | ||
784 | e.elf.indx = sec->id; | |
351f65ca | 785 | e.elf.dynstr_index = htab->r_sym (rel->r_info); |
c25bc9fc L |
786 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, |
787 | create ? INSERT : NO_INSERT); | |
788 | ||
789 | if (!slot) | |
790 | return NULL; | |
791 | ||
792 | if (*slot) | |
793 | { | |
351f65ca | 794 | ret = (struct elf_x86_64_link_hash_entry *) *slot; |
c25bc9fc L |
795 | return &ret->elf; |
796 | } | |
797 | ||
351f65ca | 798 | ret = (struct elf_x86_64_link_hash_entry *) |
c25bc9fc | 799 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, |
351f65ca | 800 | sizeof (struct elf_x86_64_link_hash_entry)); |
c25bc9fc L |
801 | if (ret) |
802 | { | |
803 | memset (ret, 0, sizeof (*ret)); | |
804 | ret->elf.indx = sec->id; | |
351f65ca | 805 | ret->elf.dynstr_index = htab->r_sym (rel->r_info); |
c25bc9fc | 806 | ret->elf.dynindx = -1; |
c25bc9fc L |
807 | *slot = ret; |
808 | } | |
809 | return &ret->elf; | |
810 | } | |
811 | ||
8d88c4ca NC |
812 | /* Create an X86-64 ELF linker hash table. */ |
813 | ||
814 | static struct bfd_link_hash_table * | |
351f65ca | 815 | elf_x86_64_link_hash_table_create (bfd *abfd) |
8d88c4ca | 816 | { |
351f65ca L |
817 | struct elf_x86_64_link_hash_table *ret; |
818 | bfd_size_type amt = sizeof (struct elf_x86_64_link_hash_table); | |
8d88c4ca | 819 | |
351f65ca | 820 | ret = (struct elf_x86_64_link_hash_table *) bfd_malloc (amt); |
c434dee6 | 821 | if (ret == NULL) |
8d88c4ca NC |
822 | return NULL; |
823 | ||
eb4ff4d6 | 824 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
351f65ca L |
825 | elf_x86_64_link_hash_newfunc, |
826 | sizeof (struct elf_x86_64_link_hash_entry), | |
4dfe6ac6 | 827 | X86_64_ELF_DATA)) |
8d88c4ca | 828 | { |
e2d34d7d | 829 | free (ret); |
8d88c4ca NC |
830 | return NULL; |
831 | } | |
832 | ||
c434dee6 AJ |
833 | ret->sdynbss = NULL; |
834 | ret->srelbss = NULL; | |
332ce62b | 835 | ret->plt_eh_frame = NULL; |
87d72d41 | 836 | ret->sym_cache.abfd = NULL; |
67a4f2b7 AO |
837 | ret->tlsdesc_plt = 0; |
838 | ret->tlsdesc_got = 0; | |
bffbf940 | 839 | ret->tls_ld_got.refcount = 0; |
67a4f2b7 | 840 | ret->sgotplt_jump_table_size = 0; |
9f03412a | 841 | ret->tls_module_base = NULL; |
e1f98742 L |
842 | ret->next_jump_slot_index = 0; |
843 | ret->next_irelative_index = 0; | |
6bbec505 | 844 | |
351f65ca L |
845 | if (ABI_64_P (abfd)) |
846 | { | |
847 | ret->r_info = elf64_r_info; | |
848 | ret->r_sym = elf64_r_sym; | |
248775ba | 849 | ret->pointer_r_type = R_X86_64_64; |
351f65ca L |
850 | ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; |
851 | ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER; | |
852 | } | |
853 | else | |
854 | { | |
855 | ret->r_info = elf32_r_info; | |
856 | ret->r_sym = elf32_r_sym; | |
248775ba | 857 | ret->pointer_r_type = R_X86_64_32; |
351f65ca L |
858 | ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; |
859 | ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER; | |
860 | } | |
861 | ||
c25bc9fc | 862 | ret->loc_hash_table = htab_try_create (1024, |
351f65ca L |
863 | elf_x86_64_local_htab_hash, |
864 | elf_x86_64_local_htab_eq, | |
c25bc9fc L |
865 | NULL); |
866 | ret->loc_hash_memory = objalloc_create (); | |
867 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
868 | { | |
869 | free (ret); | |
870 | return NULL; | |
871 | } | |
872 | ||
c434dee6 AJ |
873 | return &ret->elf.root; |
874 | } | |
875 | ||
c25bc9fc L |
876 | /* Destroy an X86-64 ELF linker hash table. */ |
877 | ||
878 | static void | |
351f65ca | 879 | elf_x86_64_link_hash_table_free (struct bfd_link_hash_table *hash) |
c25bc9fc | 880 | { |
351f65ca L |
881 | struct elf_x86_64_link_hash_table *htab |
882 | = (struct elf_x86_64_link_hash_table *) hash; | |
c25bc9fc L |
883 | |
884 | if (htab->loc_hash_table) | |
885 | htab_delete (htab->loc_hash_table); | |
886 | if (htab->loc_hash_memory) | |
887 | objalloc_free ((struct objalloc *) htab->loc_hash_memory); | |
888 | _bfd_generic_link_hash_table_free (hash); | |
889 | } | |
890 | ||
c434dee6 AJ |
891 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and |
892 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
893 | hash table. */ | |
894 | ||
b34976b6 | 895 | static bfd_boolean |
351f65ca L |
896 | elf_x86_64_create_dynamic_sections (bfd *dynobj, |
897 | struct bfd_link_info *info) | |
c434dee6 | 898 | { |
351f65ca | 899 | struct elf_x86_64_link_hash_table *htab; |
c434dee6 | 900 | |
c434dee6 | 901 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 902 | return FALSE; |
c434dee6 | 903 | |
351f65ca | 904 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
905 | if (htab == NULL) |
906 | return FALSE; | |
907 | ||
c434dee6 AJ |
908 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
909 | if (!info->shared) | |
910 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
911 | ||
6de2ae4a | 912 | if (!htab->sdynbss |
c434dee6 AJ |
913 | || (!info->shared && !htab->srelbss)) |
914 | abort (); | |
915 | ||
e41b3a13 JJ |
916 | if (!info->no_ld_generated_unwind_info |
917 | && bfd_get_section_by_name (dynobj, ".eh_frame") == NULL | |
918 | && htab->elf.splt != NULL) | |
919 | { | |
920 | flagword flags = get_elf_backend_data (dynobj)->dynamic_sec_flags; | |
921 | htab->plt_eh_frame | |
922 | = bfd_make_section_with_flags (dynobj, ".eh_frame", | |
923 | flags | SEC_READONLY); | |
924 | if (htab->plt_eh_frame == NULL | |
925 | || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 3)) | |
926 | return FALSE; | |
927 | ||
928 | htab->plt_eh_frame->size = sizeof (elf_x86_64_eh_frame_plt); | |
929 | htab->plt_eh_frame->contents | |
930 | = bfd_alloc (dynobj, htab->plt_eh_frame->size); | |
931 | memcpy (htab->plt_eh_frame->contents, elf_x86_64_eh_frame_plt, | |
932 | sizeof (elf_x86_64_eh_frame_plt)); | |
933 | } | |
b34976b6 | 934 | return TRUE; |
c434dee6 AJ |
935 | } |
936 | ||
937 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
938 | ||
939 | static void | |
351f65ca L |
940 | elf_x86_64_copy_indirect_symbol (struct bfd_link_info *info, |
941 | struct elf_link_hash_entry *dir, | |
942 | struct elf_link_hash_entry *ind) | |
c434dee6 | 943 | { |
351f65ca | 944 | struct elf_x86_64_link_hash_entry *edir, *eind; |
c434dee6 | 945 | |
351f65ca L |
946 | edir = (struct elf_x86_64_link_hash_entry *) dir; |
947 | eind = (struct elf_x86_64_link_hash_entry *) ind; | |
c434dee6 AJ |
948 | |
949 | if (eind->dyn_relocs != NULL) | |
950 | { | |
951 | if (edir->dyn_relocs != NULL) | |
952 | { | |
e03a8ed8 L |
953 | struct elf_dyn_relocs **pp; |
954 | struct elf_dyn_relocs *p; | |
c434dee6 | 955 | |
fcfa13d2 | 956 | /* Add reloc counts against the indirect sym to the direct sym |
c434dee6 AJ |
957 | list. Merge any entries against the same section. */ |
958 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
959 | { | |
e03a8ed8 | 960 | struct elf_dyn_relocs *q; |
c434dee6 AJ |
961 | |
962 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
963 | if (q->sec == p->sec) | |
964 | { | |
965 | q->pc_count += p->pc_count; | |
966 | q->count += p->count; | |
967 | *pp = p->next; | |
968 | break; | |
969 | } | |
970 | if (q == NULL) | |
971 | pp = &p->next; | |
972 | } | |
973 | *pp = edir->dyn_relocs; | |
974 | } | |
975 | ||
976 | edir->dyn_relocs = eind->dyn_relocs; | |
977 | eind->dyn_relocs = NULL; | |
978 | } | |
979 | ||
bffbf940 JJ |
980 | if (ind->root.type == bfd_link_hash_indirect |
981 | && dir->got.refcount <= 0) | |
982 | { | |
983 | edir->tls_type = eind->tls_type; | |
984 | eind->tls_type = GOT_UNKNOWN; | |
985 | } | |
986 | ||
d40d037c AJ |
987 | if (ELIMINATE_COPY_RELOCS |
988 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
989 | && dir->dynamic_adjusted) |
990 | { | |
991 | /* If called to transfer flags for a weakdef during processing | |
992 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
993 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
994 | dir->ref_dynamic |= ind->ref_dynamic; | |
995 | dir->ref_regular |= ind->ref_regular; | |
996 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
997 | dir->needs_plt |= ind->needs_plt; | |
998 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
999 | } | |
d40d037c | 1000 | else |
fcfa13d2 | 1001 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
8d88c4ca NC |
1002 | } |
1003 | ||
b34976b6 | 1004 | static bfd_boolean |
27482721 | 1005 | elf64_x86_64_elf_object_p (bfd *abfd) |
bffbf940 | 1006 | { |
8d88c4ca NC |
1007 | /* Set the right machine number for an x86-64 elf64 file. */ |
1008 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); | |
b34976b6 | 1009 | return TRUE; |
8d88c4ca NC |
1010 | } |
1011 | ||
142411ca L |
1012 | /* Return TRUE if the TLS access code sequence support transition |
1013 | from R_TYPE. */ | |
1014 | ||
1015 | static bfd_boolean | |
351f65ca L |
1016 | elf_x86_64_check_tls_transition (bfd *abfd, |
1017 | struct bfd_link_info *info, | |
1018 | asection *sec, | |
1019 | bfd_byte *contents, | |
1020 | Elf_Internal_Shdr *symtab_hdr, | |
1021 | struct elf_link_hash_entry **sym_hashes, | |
1022 | unsigned int r_type, | |
1023 | const Elf_Internal_Rela *rel, | |
1024 | const Elf_Internal_Rela *relend) | |
bffbf940 | 1025 | { |
142411ca L |
1026 | unsigned int val; |
1027 | unsigned long r_symndx; | |
1028 | struct elf_link_hash_entry *h; | |
1029 | bfd_vma offset; | |
351f65ca | 1030 | struct elf_x86_64_link_hash_table *htab; |
142411ca L |
1031 | |
1032 | /* Get the section contents. */ | |
1033 | if (contents == NULL) | |
1034 | { | |
1035 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1036 | contents = elf_section_data (sec)->this_hdr.contents; | |
1037 | else | |
1038 | { | |
1039 | /* FIXME: How to better handle error condition? */ | |
1040 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1041 | return FALSE; | |
bffbf940 | 1042 | |
142411ca L |
1043 | /* Cache the section contents for elf_link_input_bfd. */ |
1044 | elf_section_data (sec)->this_hdr.contents = contents; | |
1045 | } | |
1046 | } | |
1047 | ||
351f65ca | 1048 | htab = elf_x86_64_hash_table (info); |
142411ca | 1049 | offset = rel->r_offset; |
bffbf940 | 1050 | switch (r_type) |
142411ca L |
1051 | { |
1052 | case R_X86_64_TLSGD: | |
1053 | case R_X86_64_TLSLD: | |
1054 | if ((rel + 1) >= relend) | |
1055 | return FALSE; | |
1056 | ||
1057 | if (r_type == R_X86_64_TLSGD) | |
1058 | { | |
52bc799a | 1059 | /* Check transition from GD access model. For 64bit, only |
142411ca L |
1060 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
1061 | .word 0x6666; rex64; call __tls_get_addr | |
52bc799a L |
1062 | can transit to different access model. For 32bit, only |
1063 | leaq foo@tlsgd(%rip), %rdi | |
1064 | .word 0x6666; rex64; call __tls_get_addr | |
142411ca L |
1065 | can transit to different access model. */ |
1066 | ||
fa289a5f AM |
1067 | static const unsigned char call[] = { 0x66, 0x66, 0x48, 0xe8 }; |
1068 | static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d }; | |
1069 | ||
52bc799a | 1070 | if ((offset + 12) > sec->size |
fa289a5f | 1071 | || memcmp (contents + offset + 4, call, 4) != 0) |
142411ca | 1072 | return FALSE; |
52bc799a L |
1073 | |
1074 | if (ABI_64_P (abfd)) | |
1075 | { | |
52bc799a | 1076 | if (offset < 4 |
fa289a5f | 1077 | || memcmp (contents + offset - 4, leaq, 4) != 0) |
52bc799a L |
1078 | return FALSE; |
1079 | } | |
1080 | else | |
1081 | { | |
52bc799a | 1082 | if (offset < 3 |
fa289a5f | 1083 | || memcmp (contents + offset - 3, leaq + 1, 3) != 0) |
52bc799a L |
1084 | return FALSE; |
1085 | } | |
142411ca L |
1086 | } |
1087 | else | |
1088 | { | |
1089 | /* Check transition from LD access model. Only | |
1090 | leaq foo@tlsld(%rip), %rdi; | |
1091 | call __tls_get_addr | |
1092 | can transit to different access model. */ | |
1093 | ||
fa289a5f | 1094 | static const unsigned char lea[] = { 0x48, 0x8d, 0x3d }; |
142411ca L |
1095 | |
1096 | if (offset < 3 || (offset + 9) > sec->size) | |
1097 | return FALSE; | |
1098 | ||
fa289a5f AM |
1099 | if (memcmp (contents + offset - 3, lea, 3) != 0 |
1100 | || 0xe8 != *(contents + offset + 4)) | |
142411ca L |
1101 | return FALSE; |
1102 | } | |
1103 | ||
351f65ca | 1104 | r_symndx = htab->r_sym (rel[1].r_info); |
142411ca L |
1105 | if (r_symndx < symtab_hdr->sh_info) |
1106 | return FALSE; | |
1107 | ||
1108 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
c4fb387b L |
1109 | /* Use strncmp to check __tls_get_addr since __tls_get_addr |
1110 | may be versioned. */ | |
142411ca L |
1111 | return (h != NULL |
1112 | && h->root.root.string != NULL | |
351f65ca L |
1113 | && (ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PC32 |
1114 | || ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLT32) | |
c4fb387b L |
1115 | && (strncmp (h->root.root.string, |
1116 | "__tls_get_addr", 14) == 0)); | |
142411ca L |
1117 | |
1118 | case R_X86_64_GOTTPOFF: | |
1119 | /* Check transition from IE access model: | |
4a4c5f25 L |
1120 | mov foo@gottpoff(%rip), %reg |
1121 | add foo@gottpoff(%rip), %reg | |
142411ca L |
1122 | */ |
1123 | ||
4a4c5f25 L |
1124 | /* Check REX prefix first. */ |
1125 | if (offset >= 3 && (offset + 4) <= sec->size) | |
1126 | { | |
1127 | val = bfd_get_8 (abfd, contents + offset - 3); | |
1128 | if (val != 0x48 && val != 0x4c) | |
1129 | { | |
1130 | /* X32 may have 0x44 REX prefix or no REX prefix. */ | |
1131 | if (ABI_64_P (abfd)) | |
1132 | return FALSE; | |
1133 | } | |
1134 | } | |
1135 | else | |
1136 | { | |
1137 | /* X32 may not have any REX prefix. */ | |
1138 | if (ABI_64_P (abfd)) | |
1139 | return FALSE; | |
1140 | if (offset < 2 || (offset + 3) > sec->size) | |
1141 | return FALSE; | |
1142 | } | |
142411ca L |
1143 | |
1144 | val = bfd_get_8 (abfd, contents + offset - 2); | |
1145 | if (val != 0x8b && val != 0x03) | |
1146 | return FALSE; | |
1147 | ||
1148 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1149 | return (val & 0xc7) == 5; | |
1150 | ||
1151 | case R_X86_64_GOTPC32_TLSDESC: | |
1152 | /* Check transition from GDesc access model: | |
1153 | leaq x@tlsdesc(%rip), %rax | |
1154 | ||
1155 | Make sure it's a leaq adding rip to a 32-bit offset | |
1156 | into any register, although it's probably almost always | |
1157 | going to be rax. */ | |
1158 | ||
1159 | if (offset < 3 || (offset + 4) > sec->size) | |
1160 | return FALSE; | |
1161 | ||
1162 | val = bfd_get_8 (abfd, contents + offset - 3); | |
1163 | if ((val & 0xfb) != 0x48) | |
1164 | return FALSE; | |
1165 | ||
1166 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1167 | return FALSE; | |
1168 | ||
1169 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1170 | return (val & 0xc7) == 0x05; | |
1171 | ||
1172 | case R_X86_64_TLSDESC_CALL: | |
1173 | /* Check transition from GDesc access model: | |
1174 | call *x@tlsdesc(%rax) | |
1175 | */ | |
1176 | if (offset + 2 <= sec->size) | |
1177 | { | |
1178 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
fa289a5f AM |
1179 | static const unsigned char call[] = { 0xff, 0x10 }; |
1180 | return memcmp (contents + offset, call, 2) == 0; | |
142411ca L |
1181 | } |
1182 | ||
1183 | return FALSE; | |
1184 | ||
1185 | default: | |
1186 | abort (); | |
1187 | } | |
1188 | } | |
1189 | ||
1190 | /* Return TRUE if the TLS access transition is OK or no transition | |
1191 | will be performed. Update R_TYPE if there is a transition. */ | |
1192 | ||
1193 | static bfd_boolean | |
351f65ca L |
1194 | elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd, |
1195 | asection *sec, bfd_byte *contents, | |
1196 | Elf_Internal_Shdr *symtab_hdr, | |
1197 | struct elf_link_hash_entry **sym_hashes, | |
1198 | unsigned int *r_type, int tls_type, | |
1199 | const Elf_Internal_Rela *rel, | |
1200 | const Elf_Internal_Rela *relend, | |
1201 | struct elf_link_hash_entry *h, | |
1202 | unsigned long r_symndx) | |
142411ca L |
1203 | { |
1204 | unsigned int from_type = *r_type; | |
1205 | unsigned int to_type = from_type; | |
1206 | bfd_boolean check = TRUE; | |
1207 | ||
bb1cb422 L |
1208 | /* Skip TLS transition for functions. */ |
1209 | if (h != NULL | |
1210 | && (h->type == STT_FUNC | |
1211 | || h->type == STT_GNU_IFUNC)) | |
1212 | return TRUE; | |
1213 | ||
142411ca | 1214 | switch (from_type) |
bffbf940 JJ |
1215 | { |
1216 | case R_X86_64_TLSGD: | |
67a4f2b7 AO |
1217 | case R_X86_64_GOTPC32_TLSDESC: |
1218 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 1219 | case R_X86_64_GOTTPOFF: |
1d85728f | 1220 | if (info->executable) |
142411ca L |
1221 | { |
1222 | if (h == NULL) | |
1223 | to_type = R_X86_64_TPOFF32; | |
1224 | else | |
1225 | to_type = R_X86_64_GOTTPOFF; | |
1226 | } | |
1227 | ||
351f65ca | 1228 | /* When we are called from elf_x86_64_relocate_section, |
142411ca L |
1229 | CONTENTS isn't NULL and there may be additional transitions |
1230 | based on TLS_TYPE. */ | |
1231 | if (contents != NULL) | |
1232 | { | |
1233 | unsigned int new_to_type = to_type; | |
1234 | ||
1d85728f | 1235 | if (info->executable |
142411ca L |
1236 | && h != NULL |
1237 | && h->dynindx == -1 | |
1238 | && tls_type == GOT_TLS_IE) | |
1239 | new_to_type = R_X86_64_TPOFF32; | |
1240 | ||
1241 | if (to_type == R_X86_64_TLSGD | |
1242 | || to_type == R_X86_64_GOTPC32_TLSDESC | |
1243 | || to_type == R_X86_64_TLSDESC_CALL) | |
1244 | { | |
1245 | if (tls_type == GOT_TLS_IE) | |
1246 | new_to_type = R_X86_64_GOTTPOFF; | |
1247 | } | |
1248 | ||
1249 | /* We checked the transition before when we were called from | |
351f65ca | 1250 | elf_x86_64_check_relocs. We only want to check the new |
142411ca L |
1251 | transition which hasn't been checked before. */ |
1252 | check = new_to_type != to_type && from_type == to_type; | |
1253 | to_type = new_to_type; | |
1254 | } | |
1255 | ||
1256 | break; | |
1257 | ||
bffbf940 | 1258 | case R_X86_64_TLSLD: |
1d85728f | 1259 | if (info->executable) |
142411ca L |
1260 | to_type = R_X86_64_TPOFF32; |
1261 | break; | |
1262 | ||
1263 | default: | |
1264 | return TRUE; | |
bffbf940 JJ |
1265 | } |
1266 | ||
142411ca L |
1267 | /* Return TRUE if there is no transition. */ |
1268 | if (from_type == to_type) | |
1269 | return TRUE; | |
1270 | ||
1271 | /* Check if the transition can be performed. */ | |
1272 | if (check | |
351f65ca L |
1273 | && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents, |
1274 | symtab_hdr, sym_hashes, | |
1275 | from_type, rel, relend)) | |
142411ca | 1276 | { |
2f629d23 | 1277 | reloc_howto_type *from, *to; |
4c544807 | 1278 | const char *name; |
142411ca | 1279 | |
351f65ca L |
1280 | from = elf_x86_64_rtype_to_howto (abfd, from_type); |
1281 | to = elf_x86_64_rtype_to_howto (abfd, to_type); | |
142411ca | 1282 | |
4c544807 L |
1283 | if (h) |
1284 | name = h->root.root.string; | |
1285 | else | |
1286 | { | |
351f65ca | 1287 | struct elf_x86_64_link_hash_table *htab; |
4dfe6ac6 | 1288 | |
351f65ca | 1289 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
1290 | if (htab == NULL) |
1291 | name = "*unknown*"; | |
1292 | else | |
1293 | { | |
1294 | Elf_Internal_Sym *isym; | |
1295 | ||
1296 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1297 | abfd, r_symndx); | |
1298 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1299 | } | |
4c544807 L |
1300 | } |
1301 | ||
142411ca L |
1302 | (*_bfd_error_handler) |
1303 | (_("%B: TLS transition from %s to %s against `%s' at 0x%lx " | |
1304 | "in section `%A' failed"), | |
4c544807 | 1305 | abfd, sec, from->name, to->name, name, |
142411ca L |
1306 | (unsigned long) rel->r_offset); |
1307 | bfd_set_error (bfd_error_bad_value); | |
1308 | return FALSE; | |
1309 | } | |
1310 | ||
1311 | *r_type = to_type; | |
1312 | return TRUE; | |
bffbf940 JJ |
1313 | } |
1314 | ||
70256ad8 | 1315 | /* Look through the relocs for a section during the first phase, and |
c434dee6 AJ |
1316 | calculate needed space in the global offset table, procedure |
1317 | linkage table, and dynamic reloc sections. */ | |
70256ad8 | 1318 | |
b34976b6 | 1319 | static bfd_boolean |
351f65ca L |
1320 | elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1321 | asection *sec, | |
1322 | const Elf_Internal_Rela *relocs) | |
70256ad8 | 1323 | { |
351f65ca | 1324 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
1325 | Elf_Internal_Shdr *symtab_hdr; |
1326 | struct elf_link_hash_entry **sym_hashes; | |
70256ad8 AJ |
1327 | const Elf_Internal_Rela *rel; |
1328 | const Elf_Internal_Rela *rel_end; | |
70256ad8 AJ |
1329 | asection *sreloc; |
1330 | ||
1049f94e | 1331 | if (info->relocatable) |
b34976b6 | 1332 | return TRUE; |
70256ad8 | 1333 | |
0ffa91dd NC |
1334 | BFD_ASSERT (is_x86_64_elf (abfd)); |
1335 | ||
351f65ca | 1336 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
1337 | if (htab == NULL) |
1338 | return FALSE; | |
1339 | ||
0ffa91dd | 1340 | symtab_hdr = &elf_symtab_hdr (abfd); |
70256ad8 | 1341 | sym_hashes = elf_sym_hashes (abfd); |
70256ad8 | 1342 | |
c434dee6 | 1343 | sreloc = NULL; |
cbe950e9 | 1344 | |
70256ad8 AJ |
1345 | rel_end = relocs + sec->reloc_count; |
1346 | for (rel = relocs; rel < rel_end; rel++) | |
1347 | { | |
bffbf940 | 1348 | unsigned int r_type; |
70256ad8 AJ |
1349 | unsigned long r_symndx; |
1350 | struct elf_link_hash_entry *h; | |
4c544807 L |
1351 | Elf_Internal_Sym *isym; |
1352 | const char *name; | |
70256ad8 | 1353 | |
351f65ca L |
1354 | r_symndx = htab->r_sym (rel->r_info); |
1355 | r_type = ELF32_R_TYPE (rel->r_info); | |
c434dee6 AJ |
1356 | |
1357 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
1358 | { | |
d003868e AM |
1359 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1360 | abfd, r_symndx); | |
b34976b6 | 1361 | return FALSE; |
c434dee6 AJ |
1362 | } |
1363 | ||
70256ad8 | 1364 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1365 | { |
1366 | /* A local symbol. */ | |
c2e61a4e L |
1367 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1368 | abfd, r_symndx); | |
1369 | if (isym == NULL) | |
1370 | return FALSE; | |
c25bc9fc L |
1371 | |
1372 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
351f65ca | 1373 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c25bc9fc | 1374 | { |
351f65ca L |
1375 | h = elf_x86_64_get_local_sym_hash (htab, abfd, rel, |
1376 | TRUE); | |
c25bc9fc | 1377 | if (h == NULL) |
c2e61a4e | 1378 | return FALSE; |
6bbec505 | 1379 | |
c25bc9fc L |
1380 | /* Fake a STT_GNU_IFUNC symbol. */ |
1381 | h->type = STT_GNU_IFUNC; | |
1382 | h->def_regular = 1; | |
1383 | h->ref_regular = 1; | |
1384 | h->forced_local = 1; | |
1385 | h->root.type = bfd_link_hash_defined; | |
1386 | } | |
1387 | else | |
1388 | h = NULL; | |
1389 | } | |
70256ad8 | 1390 | else |
71cb9464 | 1391 | { |
4c544807 | 1392 | isym = NULL; |
71cb9464 L |
1393 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1394 | while (h->root.type == bfd_link_hash_indirect | |
1395 | || h->root.type == bfd_link_hash_warning) | |
1396 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c25bc9fc | 1397 | } |
cbe950e9 | 1398 | |
d1534d16 L |
1399 | /* Check invalid x32 relocations. */ |
1400 | if (!ABI_64_P (abfd)) | |
1401 | switch (r_type) | |
1402 | { | |
1403 | default: | |
1404 | break; | |
1405 | ||
d1534d16 L |
1406 | case R_X86_64_DTPOFF64: |
1407 | case R_X86_64_TPOFF64: | |
1408 | case R_X86_64_PC64: | |
1409 | case R_X86_64_GOTOFF64: | |
1410 | case R_X86_64_GOT64: | |
1411 | case R_X86_64_GOTPCREL64: | |
1412 | case R_X86_64_GOTPC64: | |
1413 | case R_X86_64_GOTPLT64: | |
1414 | case R_X86_64_PLTOFF64: | |
1415 | { | |
1416 | if (h) | |
1417 | name = h->root.root.string; | |
1418 | else | |
1419 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1420 | NULL); | |
1421 | (*_bfd_error_handler) | |
1422 | (_("%B: relocation %s against symbol `%s' isn't " | |
1423 | "supported in x32 mode"), abfd, | |
1424 | x86_64_elf_howto_table[r_type].name, name); | |
1425 | bfd_set_error (bfd_error_bad_value); | |
1426 | return FALSE; | |
1427 | } | |
1428 | break; | |
1429 | } | |
1430 | ||
c25bc9fc L |
1431 | if (h != NULL) |
1432 | { | |
cbe950e9 L |
1433 | /* Create the ifunc sections for static executables. If we |
1434 | never see an indirect function symbol nor we are building | |
1435 | a static executable, those sections will be empty and | |
1436 | won't appear in output. */ | |
1437 | switch (r_type) | |
1438 | { | |
1439 | default: | |
1440 | break; | |
1441 | ||
1442 | case R_X86_64_32S: | |
1443 | case R_X86_64_32: | |
1444 | case R_X86_64_64: | |
1445 | case R_X86_64_PC32: | |
1446 | case R_X86_64_PC64: | |
1447 | case R_X86_64_PLT32: | |
1448 | case R_X86_64_GOTPCREL: | |
1449 | case R_X86_64_GOTPCREL64: | |
9d4057ee AM |
1450 | if (htab->elf.dynobj == NULL) |
1451 | htab->elf.dynobj = abfd; | |
1452 | if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
c2e61a4e | 1453 | return FALSE; |
cbe950e9 L |
1454 | break; |
1455 | } | |
1456 | ||
1457 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle | |
1458 | it here if it is defined in a non-shared object. */ | |
1459 | if (h->type == STT_GNU_IFUNC | |
1460 | && h->def_regular) | |
1461 | { | |
1462 | /* It is referenced by a non-shared object. */ | |
1463 | h->ref_regular = 1; | |
7ae26bc1 | 1464 | h->needs_plt = 1; |
6bbec505 | 1465 | |
cbe950e9 L |
1466 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1467 | h->plt.refcount += 1; | |
1468 | ||
1469 | /* STT_GNU_IFUNC needs dynamic sections. */ | |
1470 | if (htab->elf.dynobj == NULL) | |
1471 | htab->elf.dynobj = abfd; | |
1472 | ||
1473 | switch (r_type) | |
1474 | { | |
048cbda4 | 1475 | default: |
4c544807 L |
1476 | if (h->root.root.string) |
1477 | name = h->root.root.string; | |
1478 | else | |
1479 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1480 | NULL); | |
048cbda4 L |
1481 | (*_bfd_error_handler) |
1482 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
1483 | "symbol `%s' isn't handled by %s"), abfd, | |
1484 | x86_64_elf_howto_table[r_type].name, | |
4c544807 | 1485 | name, __FUNCTION__); |
048cbda4 | 1486 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1487 | return FALSE; |
cbe950e9 | 1488 | |
248775ba L |
1489 | case R_X86_64_32: |
1490 | if (ABI_64_P (abfd)) | |
1491 | goto not_pointer; | |
710ab287 L |
1492 | case R_X86_64_64: |
1493 | h->non_got_ref = 1; | |
1494 | h->pointer_equality_needed = 1; | |
1495 | if (info->shared) | |
1496 | { | |
710ab287 L |
1497 | /* We must copy these reloc types into the output |
1498 | file. Create a reloc section in dynobj and | |
1499 | make room for this reloc. */ | |
e03a8ed8 L |
1500 | sreloc = _bfd_elf_create_ifunc_dyn_reloc |
1501 | (abfd, info, sec, sreloc, | |
351f65ca | 1502 | &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs); |
710ab287 | 1503 | if (sreloc == NULL) |
c2e61a4e | 1504 | return FALSE; |
710ab287 L |
1505 | } |
1506 | break; | |
1507 | ||
cbe950e9 | 1508 | case R_X86_64_32S: |
cbe950e9 L |
1509 | case R_X86_64_PC32: |
1510 | case R_X86_64_PC64: | |
248775ba | 1511 | not_pointer: |
cbe950e9 L |
1512 | h->non_got_ref = 1; |
1513 | if (r_type != R_X86_64_PC32 | |
1514 | && r_type != R_X86_64_PC64) | |
1515 | h->pointer_equality_needed = 1; | |
1516 | break; | |
1517 | ||
1518 | case R_X86_64_PLT32: | |
1519 | break; | |
1520 | ||
1521 | case R_X86_64_GOTPCREL: | |
1522 | case R_X86_64_GOTPCREL64: | |
7afd84dc | 1523 | h->got.refcount += 1; |
6de2ae4a L |
1524 | if (htab->elf.sgot == NULL |
1525 | && !_bfd_elf_create_got_section (htab->elf.dynobj, | |
1526 | info)) | |
c2e61a4e | 1527 | return FALSE; |
cbe950e9 L |
1528 | break; |
1529 | } | |
1530 | ||
1531 | continue; | |
1532 | } | |
71cb9464 | 1533 | } |
70256ad8 | 1534 | |
351f65ca L |
1535 | if (! elf_x86_64_tls_transition (info, abfd, sec, NULL, |
1536 | symtab_hdr, sym_hashes, | |
1537 | &r_type, GOT_UNKNOWN, | |
1538 | rel, rel_end, h, r_symndx)) | |
c2e61a4e | 1539 | return FALSE; |
142411ca | 1540 | |
bffbf940 | 1541 | switch (r_type) |
70256ad8 | 1542 | { |
bffbf940 JJ |
1543 | case R_X86_64_TLSLD: |
1544 | htab->tls_ld_got.refcount += 1; | |
1545 | goto create_got; | |
1546 | ||
1547 | case R_X86_64_TPOFF32: | |
351f65ca | 1548 | if (!info->executable && ABI_64_P (abfd)) |
70256ad8 | 1549 | { |
09a24cbf | 1550 | if (h) |
4c544807 L |
1551 | name = h->root.root.string; |
1552 | else | |
1553 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1554 | NULL); | |
bffbf940 | 1555 | (*_bfd_error_handler) |
d003868e AM |
1556 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
1557 | abfd, | |
4c544807 | 1558 | x86_64_elf_howto_table[r_type].name, name); |
bffbf940 | 1559 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1560 | return FALSE; |
70256ad8 | 1561 | } |
bffbf940 | 1562 | break; |
c434dee6 | 1563 | |
bffbf940 | 1564 | case R_X86_64_GOTTPOFF: |
1d85728f | 1565 | if (!info->executable) |
bffbf940 JJ |
1566 | info->flags |= DF_STATIC_TLS; |
1567 | /* Fall through */ | |
70256ad8 | 1568 | |
bffbf940 JJ |
1569 | case R_X86_64_GOT32: |
1570 | case R_X86_64_GOTPCREL: | |
1571 | case R_X86_64_TLSGD: | |
7b81dfbb AJ |
1572 | case R_X86_64_GOT64: |
1573 | case R_X86_64_GOTPCREL64: | |
1574 | case R_X86_64_GOTPLT64: | |
67a4f2b7 AO |
1575 | case R_X86_64_GOTPC32_TLSDESC: |
1576 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 JJ |
1577 | /* This symbol requires a global offset table entry. */ |
1578 | { | |
1579 | int tls_type, old_tls_type; | |
1580 | ||
1581 | switch (r_type) | |
1582 | { | |
1583 | default: tls_type = GOT_NORMAL; break; | |
1584 | case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break; | |
1585 | case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break; | |
67a4f2b7 AO |
1586 | case R_X86_64_GOTPC32_TLSDESC: |
1587 | case R_X86_64_TLSDESC_CALL: | |
1588 | tls_type = GOT_TLS_GDESC; break; | |
bffbf940 JJ |
1589 | } |
1590 | ||
1591 | if (h != NULL) | |
1592 | { | |
7b81dfbb AJ |
1593 | if (r_type == R_X86_64_GOTPLT64) |
1594 | { | |
1595 | /* This relocation indicates that we also need | |
1596 | a PLT entry, as this is a function. We don't need | |
1597 | a PLT entry for local symbols. */ | |
1598 | h->needs_plt = 1; | |
1599 | h->plt.refcount += 1; | |
1600 | } | |
bffbf940 | 1601 | h->got.refcount += 1; |
351f65ca | 1602 | old_tls_type = elf_x86_64_hash_entry (h)->tls_type; |
bffbf940 JJ |
1603 | } |
1604 | else | |
1605 | { | |
1606 | bfd_signed_vma *local_got_refcounts; | |
1607 | ||
1608 | /* This is a global offset table entry for a local symbol. */ | |
1609 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1610 | if (local_got_refcounts == NULL) | |
1611 | { | |
1612 | bfd_size_type size; | |
1613 | ||
1614 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1615 | size *= sizeof (bfd_signed_vma) |
1616 | + sizeof (bfd_vma) + sizeof (char); | |
bffbf940 JJ |
1617 | local_got_refcounts = ((bfd_signed_vma *) |
1618 | bfd_zalloc (abfd, size)); | |
1619 | if (local_got_refcounts == NULL) | |
c2e61a4e | 1620 | return FALSE; |
bffbf940 | 1621 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
351f65ca | 1622 | elf_x86_64_local_tlsdesc_gotent (abfd) |
67a4f2b7 | 1623 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); |
351f65ca | 1624 | elf_x86_64_local_got_tls_type (abfd) |
67a4f2b7 | 1625 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
bffbf940 JJ |
1626 | } |
1627 | local_got_refcounts[r_symndx] += 1; | |
1628 | old_tls_type | |
351f65ca | 1629 | = elf_x86_64_local_got_tls_type (abfd) [r_symndx]; |
bffbf940 JJ |
1630 | } |
1631 | ||
1632 | /* If a TLS symbol is accessed using IE at least once, | |
1633 | there is no point to use dynamic model for it. */ | |
1634 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN | |
67a4f2b7 AO |
1635 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
1636 | || tls_type != GOT_TLS_IE)) | |
bffbf940 | 1637 | { |
67a4f2b7 | 1638 | if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type)) |
bffbf940 | 1639 | tls_type = old_tls_type; |
67a4f2b7 AO |
1640 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1641 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1642 | tls_type |= old_tls_type; | |
bffbf940 JJ |
1643 | else |
1644 | { | |
09a24cbf | 1645 | if (h) |
4c544807 L |
1646 | name = h->root.root.string; |
1647 | else | |
1648 | name = bfd_elf_sym_name (abfd, symtab_hdr, | |
1649 | isym, NULL); | |
bffbf940 | 1650 | (*_bfd_error_handler) |
1f7a4e42 | 1651 | (_("%B: '%s' accessed both as normal and thread local symbol"), |
4c544807 | 1652 | abfd, name); |
c2e61a4e | 1653 | return FALSE; |
bffbf940 JJ |
1654 | } |
1655 | } | |
1656 | ||
1657 | if (old_tls_type != tls_type) | |
1658 | { | |
1659 | if (h != NULL) | |
351f65ca | 1660 | elf_x86_64_hash_entry (h)->tls_type = tls_type; |
bffbf940 | 1661 | else |
351f65ca | 1662 | elf_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type; |
bffbf940 JJ |
1663 | } |
1664 | } | |
c434dee6 AJ |
1665 | /* Fall through */ |
1666 | ||
d6ab8113 JB |
1667 | case R_X86_64_GOTOFF64: |
1668 | case R_X86_64_GOTPC32: | |
7b81dfbb | 1669 | case R_X86_64_GOTPC64: |
bffbf940 | 1670 | create_got: |
6de2ae4a | 1671 | if (htab->elf.sgot == NULL) |
c434dee6 AJ |
1672 | { |
1673 | if (htab->elf.dynobj == NULL) | |
1674 | htab->elf.dynobj = abfd; | |
6de2ae4a L |
1675 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, |
1676 | info)) | |
c2e61a4e | 1677 | return FALSE; |
c434dee6 | 1678 | } |
70256ad8 AJ |
1679 | break; |
1680 | ||
1681 | case R_X86_64_PLT32: | |
1682 | /* This symbol requires a procedure linkage table entry. We | |
407443a3 AJ |
1683 | actually build the entry in adjust_dynamic_symbol, |
1684 | because this might be a case of linking PIC code which is | |
1685 | never referenced by a dynamic object, in which case we | |
1686 | don't need to generate a procedure linkage table entry | |
1687 | after all. */ | |
70256ad8 AJ |
1688 | |
1689 | /* If this is a local symbol, we resolve it directly without | |
407443a3 | 1690 | creating a procedure linkage table entry. */ |
70256ad8 AJ |
1691 | if (h == NULL) |
1692 | continue; | |
1693 | ||
f5385ebf | 1694 | h->needs_plt = 1; |
51b64d56 | 1695 | h->plt.refcount += 1; |
70256ad8 AJ |
1696 | break; |
1697 | ||
7b81dfbb AJ |
1698 | case R_X86_64_PLTOFF64: |
1699 | /* This tries to form the 'address' of a function relative | |
1700 | to GOT. For global symbols we need a PLT entry. */ | |
1701 | if (h != NULL) | |
1702 | { | |
1703 | h->needs_plt = 1; | |
1704 | h->plt.refcount += 1; | |
1705 | } | |
1706 | goto create_got; | |
1707 | ||
248775ba L |
1708 | case R_X86_64_32: |
1709 | if (!ABI_64_P (abfd)) | |
1710 | goto pointer; | |
cc78d0af AJ |
1711 | case R_X86_64_8: |
1712 | case R_X86_64_16: | |
70256ad8 | 1713 | case R_X86_64_32S: |
1b71fb54 AJ |
1714 | /* Let's help debug shared library creation. These relocs |
1715 | cannot be used in shared libs. Don't error out for | |
1716 | sections we don't care about, such as debug sections or | |
1717 | non-constant sections. */ | |
1718 | if (info->shared | |
1719 | && (sec->flags & SEC_ALLOC) != 0 | |
1720 | && (sec->flags & SEC_READONLY) != 0) | |
1721 | { | |
09a24cbf | 1722 | if (h) |
4c544807 L |
1723 | name = h->root.root.string; |
1724 | else | |
1725 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1b71fb54 | 1726 | (*_bfd_error_handler) |
d003868e | 1727 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
4c544807 | 1728 | abfd, x86_64_elf_howto_table[r_type].name, name); |
1b71fb54 | 1729 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1730 | return FALSE; |
1b71fb54 AJ |
1731 | } |
1732 | /* Fall through. */ | |
1733 | ||
c434dee6 AJ |
1734 | case R_X86_64_PC8: |
1735 | case R_X86_64_PC16: | |
70256ad8 | 1736 | case R_X86_64_PC32: |
d6ab8113 | 1737 | case R_X86_64_PC64: |
1b71fb54 | 1738 | case R_X86_64_64: |
248775ba | 1739 | pointer: |
710ab287 | 1740 | if (h != NULL && info->executable) |
c434dee6 AJ |
1741 | { |
1742 | /* If this reloc is in a read-only section, we might | |
1743 | need a copy reloc. We can't check reliably at this | |
1744 | stage whether the section is read-only, as input | |
1745 | sections have not yet been mapped to output sections. | |
1746 | Tentatively set the flag for now, and correct in | |
1747 | adjust_dynamic_symbol. */ | |
f5385ebf | 1748 | h->non_got_ref = 1; |
c434dee6 AJ |
1749 | |
1750 | /* We may need a .plt entry if the function this reloc | |
1751 | refers to is in a shared lib. */ | |
1752 | h->plt.refcount += 1; | |
d6ab8113 | 1753 | if (r_type != R_X86_64_PC32 && r_type != R_X86_64_PC64) |
f5385ebf | 1754 | h->pointer_equality_needed = 1; |
c434dee6 | 1755 | } |
70256ad8 AJ |
1756 | |
1757 | /* If we are creating a shared library, and this is a reloc | |
1758 | against a global symbol, or a non PC relative reloc | |
1759 | against a local symbol, then we need to copy the reloc | |
1760 | into the shared library. However, if we are linking with | |
1761 | -Bsymbolic, we do not need to copy a reloc against a | |
1762 | global symbol which is defined in an object we are | |
407443a3 | 1763 | including in the link (i.e., DEF_REGULAR is set). At |
70256ad8 AJ |
1764 | this point we have not seen all the input files, so it is |
1765 | possible that DEF_REGULAR is not set now but will be set | |
c434dee6 AJ |
1766 | later (it is never cleared). In case of a weak definition, |
1767 | DEF_REGULAR may be cleared later by a strong definition in | |
1768 | a shared library. We account for that possibility below by | |
1769 | storing information in the relocs_copied field of the hash | |
1770 | table entry. A similar situation occurs when creating | |
1771 | shared libraries and symbol visibility changes render the | |
1772 | symbol local. | |
1773 | ||
1774 | If on the other hand, we are creating an executable, we | |
1775 | may need to keep relocations for symbols satisfied by a | |
1776 | dynamic library if we manage to avoid copy relocs for the | |
0f88be7a | 1777 | symbol. */ |
c434dee6 AJ |
1778 | if ((info->shared |
1779 | && (sec->flags & SEC_ALLOC) != 0 | |
d8045f23 | 1780 | && (! IS_X86_64_PCREL_TYPE (r_type) |
c434dee6 | 1781 | || (h != NULL |
55255dae | 1782 | && (! SYMBOLIC_BIND (info, h) |
c434dee6 | 1783 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1784 | || !h->def_regular)))) |
d40d037c AJ |
1785 | || (ELIMINATE_COPY_RELOCS |
1786 | && !info->shared | |
c434dee6 AJ |
1787 | && (sec->flags & SEC_ALLOC) != 0 |
1788 | && h != NULL | |
1789 | && (h->root.type == bfd_link_hash_defweak | |
0f88be7a | 1790 | || !h->def_regular))) |
70256ad8 | 1791 | { |
e03a8ed8 L |
1792 | struct elf_dyn_relocs *p; |
1793 | struct elf_dyn_relocs **head; | |
c434dee6 AJ |
1794 | |
1795 | /* We must copy these reloc types into the output file. | |
1796 | Create a reloc section in dynobj and make room for | |
1797 | this reloc. */ | |
70256ad8 AJ |
1798 | if (sreloc == NULL) |
1799 | { | |
c434dee6 AJ |
1800 | if (htab->elf.dynobj == NULL) |
1801 | htab->elf.dynobj = abfd; | |
1802 | ||
83bac4b0 | 1803 | sreloc = _bfd_elf_make_dynamic_reloc_section |
82e96e07 L |
1804 | (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2, |
1805 | abfd, /*rela?*/ TRUE); | |
70256ad8 | 1806 | |
70256ad8 | 1807 | if (sreloc == NULL) |
c2e61a4e | 1808 | return FALSE; |
70256ad8 AJ |
1809 | } |
1810 | ||
c434dee6 AJ |
1811 | /* If this is a global symbol, we count the number of |
1812 | relocations we need for this symbol. */ | |
1813 | if (h != NULL) | |
70256ad8 | 1814 | { |
351f65ca | 1815 | head = &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs; |
c434dee6 AJ |
1816 | } |
1817 | else | |
1818 | { | |
1819 | /* Track dynamic relocs needed for local syms too. | |
1820 | We really need local syms available to do this | |
1821 | easily. Oh well. */ | |
c434dee6 | 1822 | asection *s; |
87d72d41 | 1823 | void **vpp; |
87d72d41 AM |
1824 | |
1825 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1826 | abfd, r_symndx); | |
1827 | if (isym == NULL) | |
1828 | return FALSE; | |
1829 | ||
1830 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
c434dee6 | 1831 | if (s == NULL) |
87d72d41 | 1832 | s = sec; |
70256ad8 | 1833 | |
e81d3500 DD |
1834 | /* Beware of type punned pointers vs strict aliasing |
1835 | rules. */ | |
1836 | vpp = &(elf_section_data (s)->local_dynrel); | |
e03a8ed8 | 1837 | head = (struct elf_dyn_relocs **)vpp; |
c434dee6 | 1838 | } |
70256ad8 | 1839 | |
c434dee6 AJ |
1840 | p = *head; |
1841 | if (p == NULL || p->sec != sec) | |
1842 | { | |
1843 | bfd_size_type amt = sizeof *p; | |
d8045f23 | 1844 | |
e03a8ed8 | 1845 | p = ((struct elf_dyn_relocs *) |
c434dee6 | 1846 | bfd_alloc (htab->elf.dynobj, amt)); |
70256ad8 | 1847 | if (p == NULL) |
c2e61a4e | 1848 | return FALSE; |
c434dee6 AJ |
1849 | p->next = *head; |
1850 | *head = p; | |
1851 | p->sec = sec; | |
1852 | p->count = 0; | |
1853 | p->pc_count = 0; | |
70256ad8 | 1854 | } |
c434dee6 AJ |
1855 | |
1856 | p->count += 1; | |
d8045f23 | 1857 | if (IS_X86_64_PCREL_TYPE (r_type)) |
c434dee6 | 1858 | p->pc_count += 1; |
70256ad8 AJ |
1859 | } |
1860 | break; | |
fe4770f4 AJ |
1861 | |
1862 | /* This relocation describes the C++ object vtable hierarchy. | |
1863 | Reconstruct it for later use during GC. */ | |
1864 | case R_X86_64_GNU_VTINHERIT: | |
c152c796 | 1865 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
c2e61a4e | 1866 | return FALSE; |
fe4770f4 AJ |
1867 | break; |
1868 | ||
1869 | /* This relocation describes which C++ vtable entries are actually | |
1870 | used. Record for later use during GC. */ | |
1871 | case R_X86_64_GNU_VTENTRY: | |
d17e0c6e JB |
1872 | BFD_ASSERT (h != NULL); |
1873 | if (h != NULL | |
1874 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
c2e61a4e | 1875 | return FALSE; |
fe4770f4 | 1876 | break; |
c434dee6 AJ |
1877 | |
1878 | default: | |
1879 | break; | |
70256ad8 AJ |
1880 | } |
1881 | } | |
1882 | ||
b34976b6 | 1883 | return TRUE; |
70256ad8 AJ |
1884 | } |
1885 | ||
1886 | /* Return the section that should be marked against GC for a given | |
407443a3 | 1887 | relocation. */ |
70256ad8 AJ |
1888 | |
1889 | static asection * | |
351f65ca L |
1890 | elf_x86_64_gc_mark_hook (asection *sec, |
1891 | struct bfd_link_info *info, | |
1892 | Elf_Internal_Rela *rel, | |
1893 | struct elf_link_hash_entry *h, | |
1894 | Elf_Internal_Sym *sym) | |
70256ad8 AJ |
1895 | { |
1896 | if (h != NULL) | |
351f65ca | 1897 | switch (ELF32_R_TYPE (rel->r_info)) |
07adf181 AM |
1898 | { |
1899 | case R_X86_64_GNU_VTINHERIT: | |
1900 | case R_X86_64_GNU_VTENTRY: | |
1901 | return NULL; | |
1902 | } | |
1903 | ||
1904 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
70256ad8 AJ |
1905 | } |
1906 | ||
407443a3 | 1907 | /* Update the got entry reference counts for the section being removed. */ |
70256ad8 | 1908 | |
b34976b6 | 1909 | static bfd_boolean |
351f65ca L |
1910 | elf_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
1911 | asection *sec, | |
1912 | const Elf_Internal_Rela *relocs) | |
70256ad8 | 1913 | { |
351f65ca | 1914 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
1915 | Elf_Internal_Shdr *symtab_hdr; |
1916 | struct elf_link_hash_entry **sym_hashes; | |
1917 | bfd_signed_vma *local_got_refcounts; | |
1918 | const Elf_Internal_Rela *rel, *relend; | |
c434dee6 | 1919 | |
7dda2462 TG |
1920 | if (info->relocatable) |
1921 | return TRUE; | |
1922 | ||
351f65ca | 1923 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
1924 | if (htab == NULL) |
1925 | return FALSE; | |
1926 | ||
c434dee6 | 1927 | elf_section_data (sec)->local_dynrel = NULL; |
70256ad8 | 1928 | |
0ffa91dd | 1929 | symtab_hdr = &elf_symtab_hdr (abfd); |
70256ad8 AJ |
1930 | sym_hashes = elf_sym_hashes (abfd); |
1931 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1932 | ||
351f65ca | 1933 | htab = elf_x86_64_hash_table (info); |
70256ad8 AJ |
1934 | relend = relocs + sec->reloc_count; |
1935 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1936 | { |
1937 | unsigned long r_symndx; | |
1938 | unsigned int r_type; | |
1939 | struct elf_link_hash_entry *h = NULL; | |
70256ad8 | 1940 | |
351f65ca | 1941 | r_symndx = htab->r_sym (rel->r_info); |
26e41594 AM |
1942 | if (r_symndx >= symtab_hdr->sh_info) |
1943 | { | |
26e41594 | 1944 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1945 | while (h->root.type == bfd_link_hash_indirect |
1946 | || h->root.type == bfd_link_hash_warning) | |
1947 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1948 | } |
bb1cb422 L |
1949 | else |
1950 | { | |
1951 | /* A local symbol. */ | |
1952 | Elf_Internal_Sym *isym; | |
1953 | ||
1954 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1955 | abfd, r_symndx); | |
1956 | ||
1957 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
1958 | if (isym != NULL | |
82e96e07 | 1959 | && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
bb1cb422 | 1960 | { |
351f65ca | 1961 | h = elf_x86_64_get_local_sym_hash (htab, abfd, rel, FALSE); |
bb1cb422 L |
1962 | if (h == NULL) |
1963 | abort (); | |
1964 | } | |
1965 | } | |
c434dee6 | 1966 | |
3db2e7dd L |
1967 | if (h) |
1968 | { | |
1969 | struct elf_x86_64_link_hash_entry *eh; | |
1970 | struct elf_dyn_relocs **pp; | |
1971 | struct elf_dyn_relocs *p; | |
1972 | ||
1973 | eh = (struct elf_x86_64_link_hash_entry *) h; | |
1974 | ||
1975 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
1976 | if (p->sec == sec) | |
1977 | { | |
1978 | /* Everything must go for SEC. */ | |
1979 | *pp = p->next; | |
1980 | break; | |
1981 | } | |
1982 | } | |
1983 | ||
351f65ca L |
1984 | r_type = ELF32_R_TYPE (rel->r_info); |
1985 | if (! elf_x86_64_tls_transition (info, abfd, sec, NULL, | |
1986 | symtab_hdr, sym_hashes, | |
1987 | &r_type, GOT_UNKNOWN, | |
1988 | rel, relend, h, r_symndx)) | |
142411ca L |
1989 | return FALSE; |
1990 | ||
26e41594 AM |
1991 | switch (r_type) |
1992 | { | |
1993 | case R_X86_64_TLSLD: | |
4dfe6ac6 NC |
1994 | if (htab->tls_ld_got.refcount > 0) |
1995 | htab->tls_ld_got.refcount -= 1; | |
26e41594 | 1996 | break; |
c434dee6 | 1997 | |
26e41594 | 1998 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
1999 | case R_X86_64_GOTPC32_TLSDESC: |
2000 | case R_X86_64_TLSDESC_CALL: | |
26e41594 AM |
2001 | case R_X86_64_GOTTPOFF: |
2002 | case R_X86_64_GOT32: | |
2003 | case R_X86_64_GOTPCREL: | |
7b81dfbb AJ |
2004 | case R_X86_64_GOT64: |
2005 | case R_X86_64_GOTPCREL64: | |
2006 | case R_X86_64_GOTPLT64: | |
26e41594 AM |
2007 | if (h != NULL) |
2008 | { | |
7b81dfbb AJ |
2009 | if (r_type == R_X86_64_GOTPLT64 && h->plt.refcount > 0) |
2010 | h->plt.refcount -= 1; | |
26e41594 AM |
2011 | if (h->got.refcount > 0) |
2012 | h->got.refcount -= 1; | |
bb1cb422 L |
2013 | if (h->type == STT_GNU_IFUNC) |
2014 | { | |
2015 | if (h->plt.refcount > 0) | |
2016 | h->plt.refcount -= 1; | |
2017 | } | |
26e41594 AM |
2018 | } |
2019 | else if (local_got_refcounts != NULL) | |
2020 | { | |
2021 | if (local_got_refcounts[r_symndx] > 0) | |
2022 | local_got_refcounts[r_symndx] -= 1; | |
2023 | } | |
2024 | break; | |
c434dee6 | 2025 | |
26e41594 AM |
2026 | case R_X86_64_8: |
2027 | case R_X86_64_16: | |
2028 | case R_X86_64_32: | |
2029 | case R_X86_64_64: | |
2030 | case R_X86_64_32S: | |
2031 | case R_X86_64_PC8: | |
2032 | case R_X86_64_PC16: | |
2033 | case R_X86_64_PC32: | |
d6ab8113 | 2034 | case R_X86_64_PC64: |
3db2e7dd L |
2035 | if (info->shared |
2036 | && (h == NULL || h->type != STT_GNU_IFUNC)) | |
26e41594 AM |
2037 | break; |
2038 | /* Fall thru */ | |
c434dee6 | 2039 | |
26e41594 | 2040 | case R_X86_64_PLT32: |
7b81dfbb | 2041 | case R_X86_64_PLTOFF64: |
26e41594 AM |
2042 | if (h != NULL) |
2043 | { | |
2044 | if (h->plt.refcount > 0) | |
2045 | h->plt.refcount -= 1; | |
2046 | } | |
2047 | break; | |
70256ad8 | 2048 | |
26e41594 AM |
2049 | default: |
2050 | break; | |
2051 | } | |
2052 | } | |
70256ad8 | 2053 | |
b34976b6 | 2054 | return TRUE; |
70256ad8 AJ |
2055 | } |
2056 | ||
2057 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2058 | regular object. The current definition is in some section of the | |
2059 | dynamic object, but we're not including those sections. We have to | |
2060 | change the definition to something the rest of the link can | |
407443a3 | 2061 | understand. */ |
70256ad8 | 2062 | |
b34976b6 | 2063 | static bfd_boolean |
351f65ca L |
2064 | elf_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info, |
2065 | struct elf_link_hash_entry *h) | |
70256ad8 | 2066 | { |
351f65ca | 2067 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 | 2068 | asection *s; |
70256ad8 | 2069 | |
cbe950e9 L |
2070 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
2071 | if (h->type == STT_GNU_IFUNC) | |
2072 | { | |
2073 | if (h->plt.refcount <= 0) | |
2074 | { | |
2075 | h->plt.offset = (bfd_vma) -1; | |
2076 | h->needs_plt = 0; | |
2077 | } | |
2078 | return TRUE; | |
2079 | } | |
2080 | ||
70256ad8 AJ |
2081 | /* If this is a function, put it in the procedure linkage table. We |
2082 | will fill in the contents of the procedure linkage table later, | |
2083 | when we know the address of the .got section. */ | |
2084 | if (h->type == STT_FUNC | |
f5385ebf | 2085 | || h->needs_plt) |
70256ad8 | 2086 | { |
c434dee6 | 2087 | if (h->plt.refcount <= 0 |
27482721 AJ |
2088 | || SYMBOL_CALLS_LOCAL (info, h) |
2089 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
2090 | && h->root.type == bfd_link_hash_undefweak)) | |
70256ad8 | 2091 | { |
70256ad8 AJ |
2092 | /* This case can occur if we saw a PLT32 reloc in an input |
2093 | file, but the symbol was never referred to by a dynamic | |
2094 | object, or if all references were garbage collected. In | |
2095 | such a case, we don't actually need to build a procedure | |
2096 | linkage table, and we can just do a PC32 reloc instead. */ | |
70256ad8 | 2097 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2098 | h->needs_plt = 0; |
70256ad8 AJ |
2099 | } |
2100 | ||
b34976b6 | 2101 | return TRUE; |
70256ad8 | 2102 | } |
bbd7ec4a | 2103 | else |
c434dee6 AJ |
2104 | /* It's possible that we incorrectly decided a .plt reloc was |
2105 | needed for an R_X86_64_PC32 reloc to a non-function sym in | |
2106 | check_relocs. We can't decide accurately between function and | |
2107 | non-function syms in check-relocs; Objects loaded later in | |
2108 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 2109 | h->plt.offset = (bfd_vma) -1; |
70256ad8 AJ |
2110 | |
2111 | /* If this is a weak symbol, and there is a real definition, the | |
2112 | processor independent code will have arranged for us to see the | |
407443a3 | 2113 | real definition first, and we can just use the same value. */ |
f6e332e6 | 2114 | if (h->u.weakdef != NULL) |
70256ad8 | 2115 | { |
f6e332e6 AM |
2116 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2117 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2118 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2119 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
d40d037c | 2120 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 2121 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 2122 | return TRUE; |
70256ad8 AJ |
2123 | } |
2124 | ||
2125 | /* This is a reference to a symbol defined by a dynamic object which | |
407443a3 | 2126 | is not a function. */ |
70256ad8 AJ |
2127 | |
2128 | /* If we are creating a shared library, we must presume that the | |
2129 | only references to the symbol are via the global offset table. | |
2130 | For such cases we need not do anything here; the relocations will | |
407443a3 | 2131 | be handled correctly by relocate_section. */ |
70256ad8 | 2132 | if (info->shared) |
b34976b6 | 2133 | return TRUE; |
70256ad8 AJ |
2134 | |
2135 | /* If there are no references to this symbol that do not use the | |
2136 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 2137 | if (!h->non_got_ref) |
b34976b6 | 2138 | return TRUE; |
70256ad8 | 2139 | |
c434dee6 AJ |
2140 | /* If -z nocopyreloc was given, we won't generate them either. */ |
2141 | if (info->nocopyreloc) | |
2142 | { | |
f5385ebf | 2143 | h->non_got_ref = 0; |
b34976b6 | 2144 | return TRUE; |
c434dee6 AJ |
2145 | } |
2146 | ||
d40d037c | 2147 | if (ELIMINATE_COPY_RELOCS) |
c434dee6 | 2148 | { |
351f65ca | 2149 | struct elf_x86_64_link_hash_entry * eh; |
e03a8ed8 | 2150 | struct elf_dyn_relocs *p; |
c434dee6 | 2151 | |
351f65ca | 2152 | eh = (struct elf_x86_64_link_hash_entry *) h; |
d40d037c AJ |
2153 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
2154 | { | |
2155 | s = p->sec->output_section; | |
2156 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2157 | break; | |
2158 | } | |
2159 | ||
2160 | /* If we didn't find any dynamic relocs in read-only sections, then | |
2161 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
2162 | if (p == NULL) | |
2163 | { | |
f5385ebf | 2164 | h->non_got_ref = 0; |
d40d037c AJ |
2165 | return TRUE; |
2166 | } | |
c434dee6 AJ |
2167 | } |
2168 | ||
909272ee AM |
2169 | if (h->size == 0) |
2170 | { | |
2171 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
2172 | h->root.root.string); | |
2173 | return TRUE; | |
2174 | } | |
2175 | ||
70256ad8 | 2176 | /* We must allocate the symbol in our .dynbss section, which will |
407443a3 | 2177 | become part of the .bss section of the executable. There will be |
70256ad8 AJ |
2178 | an entry for this symbol in the .dynsym section. The dynamic |
2179 | object will contain position independent code, so all references | |
2180 | from the dynamic object to this symbol will go through the global | |
2181 | offset table. The dynamic linker will use the .dynsym entry to | |
2182 | determine the address it must put in the global offset table, so | |
2183 | both the dynamic object and the regular object will refer to the | |
2184 | same memory location for the variable. */ | |
2185 | ||
351f65ca | 2186 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2187 | if (htab == NULL) |
2188 | return FALSE; | |
70256ad8 AJ |
2189 | |
2190 | /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker | |
2191 | to copy the initial value out of the dynamic object and into the | |
cedb70c5 | 2192 | runtime process image. */ |
70256ad8 AJ |
2193 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
2194 | { | |
351f65ca L |
2195 | const struct elf_backend_data *bed; |
2196 | bed = get_elf_backend_data (info->output_bfd); | |
2197 | htab->srelbss->size += bed->s->sizeof_rela; | |
f5385ebf | 2198 | h->needs_copy = 1; |
70256ad8 AJ |
2199 | } |
2200 | ||
c434dee6 | 2201 | s = htab->sdynbss; |
70256ad8 | 2202 | |
027297b7 | 2203 | return _bfd_elf_adjust_dynamic_copy (h, s); |
70256ad8 AJ |
2204 | } |
2205 | ||
c434dee6 AJ |
2206 | /* Allocate space in .plt, .got and associated reloc sections for |
2207 | dynamic relocs. */ | |
2208 | ||
b34976b6 | 2209 | static bfd_boolean |
351f65ca | 2210 | elf_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
c434dee6 AJ |
2211 | { |
2212 | struct bfd_link_info *info; | |
351f65ca L |
2213 | struct elf_x86_64_link_hash_table *htab; |
2214 | struct elf_x86_64_link_hash_entry *eh; | |
e03a8ed8 | 2215 | struct elf_dyn_relocs *p; |
351f65ca | 2216 | const struct elf_backend_data *bed; |
c434dee6 | 2217 | |
e92d460e | 2218 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 2219 | return TRUE; |
c434dee6 | 2220 | |
351f65ca | 2221 | eh = (struct elf_x86_64_link_hash_entry *) h; |
e92d460e | 2222 | |
c434dee6 | 2223 | info = (struct bfd_link_info *) inf; |
351f65ca | 2224 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2225 | if (htab == NULL) |
2226 | return FALSE; | |
351f65ca | 2227 | bed = get_elf_backend_data (info->output_bfd); |
c434dee6 | 2228 | |
cbe950e9 L |
2229 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
2230 | here if it is defined and referenced in a non-shared object. */ | |
2231 | if (h->type == STT_GNU_IFUNC | |
2232 | && h->def_regular) | |
e03a8ed8 L |
2233 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, |
2234 | &eh->dyn_relocs, | |
2235 | PLT_ENTRY_SIZE, | |
2236 | GOT_ENTRY_SIZE); | |
cbe950e9 L |
2237 | else if (htab->elf.dynamic_sections_created |
2238 | && h->plt.refcount > 0) | |
c434dee6 AJ |
2239 | { |
2240 | /* Make sure this symbol is output as a dynamic symbol. | |
2241 | Undefined weak syms won't yet be marked as dynamic. */ | |
2242 | if (h->dynindx == -1 | |
f5385ebf | 2243 | && !h->forced_local) |
c434dee6 | 2244 | { |
c152c796 | 2245 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2246 | return FALSE; |
c434dee6 AJ |
2247 | } |
2248 | ||
27482721 AJ |
2249 | if (info->shared |
2250 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
c434dee6 | 2251 | { |
6de2ae4a | 2252 | asection *s = htab->elf.splt; |
c434dee6 AJ |
2253 | |
2254 | /* If this is the first .plt entry, make room for the special | |
2255 | first entry. */ | |
eea6121a AM |
2256 | if (s->size == 0) |
2257 | s->size += PLT_ENTRY_SIZE; | |
c434dee6 | 2258 | |
eea6121a | 2259 | h->plt.offset = s->size; |
c434dee6 AJ |
2260 | |
2261 | /* If this symbol is not defined in a regular file, and we are | |
2262 | not generating a shared library, then set the symbol to this | |
2263 | location in the .plt. This is required to make function | |
2264 | pointers compare as equal between the normal executable and | |
2265 | the shared library. */ | |
2266 | if (! info->shared | |
f5385ebf | 2267 | && !h->def_regular) |
c434dee6 AJ |
2268 | { |
2269 | h->root.u.def.section = s; | |
2270 | h->root.u.def.value = h->plt.offset; | |
2271 | } | |
2272 | ||
2273 | /* Make room for this entry. */ | |
eea6121a | 2274 | s->size += PLT_ENTRY_SIZE; |
c434dee6 AJ |
2275 | |
2276 | /* We also need to make an entry in the .got.plt section, which | |
2277 | will be placed in the .got section by the linker script. */ | |
6de2ae4a | 2278 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
c434dee6 AJ |
2279 | |
2280 | /* We also need to make an entry in the .rela.plt section. */ | |
351f65ca | 2281 | htab->elf.srelplt->size += bed->s->sizeof_rela; |
6de2ae4a | 2282 | htab->elf.srelplt->reloc_count++; |
c434dee6 AJ |
2283 | } |
2284 | else | |
2285 | { | |
2286 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 2287 | h->needs_plt = 0; |
c434dee6 AJ |
2288 | } |
2289 | } | |
2290 | else | |
2291 | { | |
2292 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 2293 | h->needs_plt = 0; |
c434dee6 AJ |
2294 | } |
2295 | ||
67a4f2b7 AO |
2296 | eh->tlsdesc_got = (bfd_vma) -1; |
2297 | ||
bffbf940 JJ |
2298 | /* If R_X86_64_GOTTPOFF symbol is now local to the binary, |
2299 | make it a R_X86_64_TPOFF32 requiring no GOT entry. */ | |
2300 | if (h->got.refcount > 0 | |
1d85728f | 2301 | && info->executable |
bffbf940 | 2302 | && h->dynindx == -1 |
351f65ca | 2303 | && elf_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE) |
d8045f23 NC |
2304 | { |
2305 | h->got.offset = (bfd_vma) -1; | |
2306 | } | |
bffbf940 | 2307 | else if (h->got.refcount > 0) |
c434dee6 AJ |
2308 | { |
2309 | asection *s; | |
b34976b6 | 2310 | bfd_boolean dyn; |
351f65ca | 2311 | int tls_type = elf_x86_64_hash_entry (h)->tls_type; |
c434dee6 AJ |
2312 | |
2313 | /* Make sure this symbol is output as a dynamic symbol. | |
2314 | Undefined weak syms won't yet be marked as dynamic. */ | |
2315 | if (h->dynindx == -1 | |
f5385ebf | 2316 | && !h->forced_local) |
c434dee6 | 2317 | { |
c152c796 | 2318 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2319 | return FALSE; |
c434dee6 AJ |
2320 | } |
2321 | ||
67a4f2b7 AO |
2322 | if (GOT_TLS_GDESC_P (tls_type)) |
2323 | { | |
6de2ae4a | 2324 | eh->tlsdesc_got = htab->elf.sgotplt->size |
351f65ca | 2325 | - elf_x86_64_compute_jump_table_size (htab); |
6de2ae4a | 2326 | htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE; |
67a4f2b7 AO |
2327 | h->got.offset = (bfd_vma) -2; |
2328 | } | |
2329 | if (! GOT_TLS_GDESC_P (tls_type) | |
2330 | || GOT_TLS_GD_P (tls_type)) | |
2331 | { | |
6de2ae4a | 2332 | s = htab->elf.sgot; |
67a4f2b7 AO |
2333 | h->got.offset = s->size; |
2334 | s->size += GOT_ENTRY_SIZE; | |
2335 | if (GOT_TLS_GD_P (tls_type)) | |
2336 | s->size += GOT_ENTRY_SIZE; | |
2337 | } | |
c434dee6 | 2338 | dyn = htab->elf.dynamic_sections_created; |
bffbf940 JJ |
2339 | /* R_X86_64_TLSGD needs one dynamic relocation if local symbol |
2340 | and two if global. | |
2341 | R_X86_64_GOTTPOFF needs one dynamic relocation. */ | |
67a4f2b7 | 2342 | if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
bffbf940 | 2343 | || tls_type == GOT_TLS_IE) |
351f65ca | 2344 | htab->elf.srelgot->size += bed->s->sizeof_rela; |
67a4f2b7 | 2345 | else if (GOT_TLS_GD_P (tls_type)) |
351f65ca | 2346 | htab->elf.srelgot->size += 2 * bed->s->sizeof_rela; |
67a4f2b7 AO |
2347 | else if (! GOT_TLS_GDESC_P (tls_type) |
2348 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2349 | || h->root.type != bfd_link_hash_undefweak) | |
27482721 AJ |
2350 | && (info->shared |
2351 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
351f65ca | 2352 | htab->elf.srelgot->size += bed->s->sizeof_rela; |
67a4f2b7 AO |
2353 | if (GOT_TLS_GDESC_P (tls_type)) |
2354 | { | |
351f65ca | 2355 | htab->elf.srelplt->size += bed->s->sizeof_rela; |
67a4f2b7 AO |
2356 | htab->tlsdesc_plt = (bfd_vma) -1; |
2357 | } | |
c434dee6 AJ |
2358 | } |
2359 | else | |
2360 | h->got.offset = (bfd_vma) -1; | |
2361 | ||
c434dee6 | 2362 | if (eh->dyn_relocs == NULL) |
b34976b6 | 2363 | return TRUE; |
c434dee6 AJ |
2364 | |
2365 | /* In the shared -Bsymbolic case, discard space allocated for | |
2366 | dynamic pc-relative relocs against symbols which turn out to be | |
2367 | defined in regular objects. For the normal shared case, discard | |
2368 | space for pc-relative relocs that have become local due to symbol | |
2369 | visibility changes. */ | |
2370 | ||
2371 | if (info->shared) | |
2372 | { | |
27482721 AJ |
2373 | /* Relocs that use pc_count are those that appear on a call |
2374 | insn, or certain REL relocs that can generated via assembly. | |
2375 | We want calls to protected symbols to resolve directly to the | |
2376 | function rather than going via the plt. If people want | |
2377 | function pointer comparisons to work as expected then they | |
2378 | should avoid writing weird assembly. */ | |
2379 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
c434dee6 | 2380 | { |
e03a8ed8 | 2381 | struct elf_dyn_relocs **pp; |
c434dee6 AJ |
2382 | |
2383 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2384 | { | |
2385 | p->count -= p->pc_count; | |
2386 | p->pc_count = 0; | |
2387 | if (p->count == 0) | |
2388 | *pp = p->next; | |
2389 | else | |
2390 | pp = &p->next; | |
2391 | } | |
2392 | } | |
4e795f50 AM |
2393 | |
2394 | /* Also discard relocs on undefined weak syms with non-default | |
2395 | visibility. */ | |
22d606e9 | 2396 | if (eh->dyn_relocs != NULL |
4e795f50 | 2397 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
2398 | { |
2399 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2400 | eh->dyn_relocs = NULL; | |
2401 | ||
2402 | /* Make sure undefined weak symbols are output as a dynamic | |
2403 | symbol in PIEs. */ | |
2404 | else if (h->dynindx == -1 | |
d8045f23 NC |
2405 | && ! h->forced_local |
2406 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2407 | return FALSE; | |
22d606e9 | 2408 | } |
cbe950e9 | 2409 | |
d8045f23 | 2410 | } |
d40d037c | 2411 | else if (ELIMINATE_COPY_RELOCS) |
c434dee6 AJ |
2412 | { |
2413 | /* For the non-shared case, discard space for relocs against | |
2414 | symbols which turn out to need copy relocs or are not | |
2415 | dynamic. */ | |
2416 | ||
f5385ebf AM |
2417 | if (!h->non_got_ref |
2418 | && ((h->def_dynamic | |
2419 | && !h->def_regular) | |
c434dee6 AJ |
2420 | || (htab->elf.dynamic_sections_created |
2421 | && (h->root.type == bfd_link_hash_undefweak | |
2422 | || h->root.type == bfd_link_hash_undefined)))) | |
2423 | { | |
2424 | /* Make sure this symbol is output as a dynamic symbol. | |
2425 | Undefined weak syms won't yet be marked as dynamic. */ | |
2426 | if (h->dynindx == -1 | |
d8045f23 NC |
2427 | && ! h->forced_local |
2428 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2429 | return FALSE; | |
c434dee6 AJ |
2430 | |
2431 | /* If that succeeded, we know we'll be keeping all the | |
2432 | relocs. */ | |
2433 | if (h->dynindx != -1) | |
2434 | goto keep; | |
2435 | } | |
2436 | ||
2437 | eh->dyn_relocs = NULL; | |
2438 | ||
2439 | keep: ; | |
2440 | } | |
2441 | ||
2442 | /* Finally, allocate space. */ | |
2443 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2444 | { | |
e7c33416 NC |
2445 | asection * sreloc; |
2446 | ||
cbe950e9 | 2447 | sreloc = elf_section_data (p->sec)->sreloc; |
e7c33416 NC |
2448 | |
2449 | BFD_ASSERT (sreloc != NULL); | |
2450 | ||
351f65ca | 2451 | sreloc->size += p->count * bed->s->sizeof_rela; |
c434dee6 AJ |
2452 | } |
2453 | ||
b34976b6 | 2454 | return TRUE; |
c434dee6 AJ |
2455 | } |
2456 | ||
c25bc9fc L |
2457 | /* Allocate space in .plt, .got and associated reloc sections for |
2458 | local dynamic relocs. */ | |
2459 | ||
2460 | static bfd_boolean | |
351f65ca | 2461 | elf_x86_64_allocate_local_dynrelocs (void **slot, void *inf) |
c25bc9fc L |
2462 | { |
2463 | struct elf_link_hash_entry *h | |
2464 | = (struct elf_link_hash_entry *) *slot; | |
2465 | ||
2466 | if (h->type != STT_GNU_IFUNC | |
2467 | || !h->def_regular | |
2468 | || !h->ref_regular | |
2469 | || !h->forced_local | |
2470 | || h->root.type != bfd_link_hash_defined) | |
2471 | abort (); | |
2472 | ||
351f65ca | 2473 | return elf_x86_64_allocate_dynrelocs (h, inf); |
c25bc9fc L |
2474 | } |
2475 | ||
c434dee6 AJ |
2476 | /* Find any dynamic relocs that apply to read-only sections. */ |
2477 | ||
b34976b6 | 2478 | static bfd_boolean |
351f65ca L |
2479 | elf_x86_64_readonly_dynrelocs (struct elf_link_hash_entry *h, |
2480 | void * inf) | |
c434dee6 | 2481 | { |
351f65ca | 2482 | struct elf_x86_64_link_hash_entry *eh; |
e03a8ed8 | 2483 | struct elf_dyn_relocs *p; |
c434dee6 | 2484 | |
aa715242 L |
2485 | /* Skip local IFUNC symbols. */ |
2486 | if (h->forced_local && h->type == STT_GNU_IFUNC) | |
2487 | return TRUE; | |
2488 | ||
351f65ca | 2489 | eh = (struct elf_x86_64_link_hash_entry *) h; |
c434dee6 AJ |
2490 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
2491 | { | |
2492 | asection *s = p->sec->output_section; | |
2493 | ||
2494 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2495 | { | |
2496 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2497 | ||
2498 | info->flags |= DF_TEXTREL; | |
2499 | ||
b70321a2 L |
2500 | if (info->warn_shared_textrel && info->shared) |
2501 | info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"), | |
2502 | p->sec->owner, h->root.root.string, | |
2503 | p->sec); | |
2504 | ||
c434dee6 | 2505 | /* Not an error, just cut short the traversal. */ |
b34976b6 | 2506 | return FALSE; |
c434dee6 AJ |
2507 | } |
2508 | } | |
b34976b6 | 2509 | return TRUE; |
c434dee6 AJ |
2510 | } |
2511 | ||
70256ad8 AJ |
2512 | /* Set the sizes of the dynamic sections. */ |
2513 | ||
b34976b6 | 2514 | static bfd_boolean |
351f65ca L |
2515 | elf_x86_64_size_dynamic_sections (bfd *output_bfd, |
2516 | struct bfd_link_info *info) | |
70256ad8 | 2517 | { |
351f65ca | 2518 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
2519 | bfd *dynobj; |
2520 | asection *s; | |
b34976b6 | 2521 | bfd_boolean relocs; |
c434dee6 | 2522 | bfd *ibfd; |
351f65ca | 2523 | const struct elf_backend_data *bed; |
70256ad8 | 2524 | |
351f65ca | 2525 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2526 | if (htab == NULL) |
2527 | return FALSE; | |
351f65ca | 2528 | bed = get_elf_backend_data (output_bfd); |
4dfe6ac6 | 2529 | |
c434dee6 AJ |
2530 | dynobj = htab->elf.dynobj; |
2531 | if (dynobj == NULL) | |
2532 | abort (); | |
70256ad8 | 2533 | |
c434dee6 | 2534 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
2535 | { |
2536 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 2537 | if (info->executable) |
70256ad8 AJ |
2538 | { |
2539 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
c434dee6 AJ |
2540 | if (s == NULL) |
2541 | abort (); | |
351f65ca L |
2542 | s->size = htab->dynamic_interpreter_size; |
2543 | s->contents = (unsigned char *) htab->dynamic_interpreter; | |
70256ad8 AJ |
2544 | } |
2545 | } | |
70256ad8 | 2546 | |
c434dee6 AJ |
2547 | /* Set up .got offsets for local syms, and space for local dynamic |
2548 | relocs. */ | |
2549 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
70256ad8 | 2550 | { |
c434dee6 AJ |
2551 | bfd_signed_vma *local_got; |
2552 | bfd_signed_vma *end_local_got; | |
bffbf940 | 2553 | char *local_tls_type; |
67a4f2b7 | 2554 | bfd_vma *local_tlsdesc_gotent; |
c434dee6 AJ |
2555 | bfd_size_type locsymcount; |
2556 | Elf_Internal_Shdr *symtab_hdr; | |
2557 | asection *srel; | |
70256ad8 | 2558 | |
0ffa91dd | 2559 | if (! is_x86_64_elf (ibfd)) |
70256ad8 AJ |
2560 | continue; |
2561 | ||
c434dee6 | 2562 | for (s = ibfd->sections; s != NULL; s = s->next) |
70256ad8 | 2563 | { |
e03a8ed8 | 2564 | struct elf_dyn_relocs *p; |
c434dee6 | 2565 | |
e03a8ed8 | 2566 | for (p = (struct elf_dyn_relocs *) |
e81d3500 | 2567 | (elf_section_data (s)->local_dynrel); |
c434dee6 AJ |
2568 | p != NULL; |
2569 | p = p->next) | |
70256ad8 | 2570 | { |
c434dee6 AJ |
2571 | if (!bfd_is_abs_section (p->sec) |
2572 | && bfd_is_abs_section (p->sec->output_section)) | |
2573 | { | |
2574 | /* Input section has been discarded, either because | |
2575 | it is a copy of a linkonce section or due to | |
2576 | linker script /DISCARD/, so we'll be discarding | |
2577 | the relocs too. */ | |
2578 | } | |
2579 | else if (p->count != 0) | |
2580 | { | |
2581 | srel = elf_section_data (p->sec)->sreloc; | |
351f65ca | 2582 | srel->size += p->count * bed->s->sizeof_rela; |
4b819e1f L |
2583 | if ((p->sec->output_section->flags & SEC_READONLY) != 0 |
2584 | && (info->flags & DF_TEXTREL) == 0) | |
b70321a2 L |
2585 | { |
2586 | info->flags |= DF_TEXTREL; | |
2587 | if (info->warn_shared_textrel && info->shared) | |
2588 | info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"), | |
2589 | p->sec->owner, p->sec); | |
b70321a2 | 2590 | } |
c434dee6 | 2591 | } |
70256ad8 AJ |
2592 | } |
2593 | } | |
c434dee6 AJ |
2594 | |
2595 | local_got = elf_local_got_refcounts (ibfd); | |
2596 | if (!local_got) | |
2597 | continue; | |
2598 | ||
0ffa91dd | 2599 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c434dee6 AJ |
2600 | locsymcount = symtab_hdr->sh_info; |
2601 | end_local_got = local_got + locsymcount; | |
351f65ca L |
2602 | local_tls_type = elf_x86_64_local_got_tls_type (ibfd); |
2603 | local_tlsdesc_gotent = elf_x86_64_local_tlsdesc_gotent (ibfd); | |
6de2ae4a L |
2604 | s = htab->elf.sgot; |
2605 | srel = htab->elf.srelgot; | |
67a4f2b7 AO |
2606 | for (; local_got < end_local_got; |
2607 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
70256ad8 | 2608 | { |
67a4f2b7 | 2609 | *local_tlsdesc_gotent = (bfd_vma) -1; |
c434dee6 | 2610 | if (*local_got > 0) |
70256ad8 | 2611 | { |
67a4f2b7 AO |
2612 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2613 | { | |
6de2ae4a | 2614 | *local_tlsdesc_gotent = htab->elf.sgotplt->size |
351f65ca | 2615 | - elf_x86_64_compute_jump_table_size (htab); |
6de2ae4a | 2616 | htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE; |
67a4f2b7 AO |
2617 | *local_got = (bfd_vma) -2; |
2618 | } | |
2619 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2620 | || GOT_TLS_GD_P (*local_tls_type)) | |
2621 | { | |
2622 | *local_got = s->size; | |
2623 | s->size += GOT_ENTRY_SIZE; | |
2624 | if (GOT_TLS_GD_P (*local_tls_type)) | |
2625 | s->size += GOT_ENTRY_SIZE; | |
2626 | } | |
bffbf940 | 2627 | if (info->shared |
67a4f2b7 | 2628 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
bffbf940 | 2629 | || *local_tls_type == GOT_TLS_IE) |
67a4f2b7 AO |
2630 | { |
2631 | if (GOT_TLS_GDESC_P (*local_tls_type)) | |
2632 | { | |
6de2ae4a | 2633 | htab->elf.srelplt->size |
351f65ca | 2634 | += bed->s->sizeof_rela; |
67a4f2b7 AO |
2635 | htab->tlsdesc_plt = (bfd_vma) -1; |
2636 | } | |
2637 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2638 | || GOT_TLS_GD_P (*local_tls_type)) | |
351f65ca | 2639 | srel->size += bed->s->sizeof_rela; |
67a4f2b7 | 2640 | } |
70256ad8 AJ |
2641 | } |
2642 | else | |
c434dee6 AJ |
2643 | *local_got = (bfd_vma) -1; |
2644 | } | |
2645 | } | |
70256ad8 | 2646 | |
bffbf940 JJ |
2647 | if (htab->tls_ld_got.refcount > 0) |
2648 | { | |
2649 | /* Allocate 2 got entries and 1 dynamic reloc for R_X86_64_TLSLD | |
2650 | relocs. */ | |
6de2ae4a L |
2651 | htab->tls_ld_got.offset = htab->elf.sgot->size; |
2652 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
351f65ca | 2653 | htab->elf.srelgot->size += bed->s->sizeof_rela; |
bffbf940 JJ |
2654 | } |
2655 | else | |
2656 | htab->tls_ld_got.offset = -1; | |
2657 | ||
c434dee6 AJ |
2658 | /* Allocate global sym .plt and .got entries, and space for global |
2659 | sym dynamic relocs. */ | |
351f65ca | 2660 | elf_link_hash_traverse (&htab->elf, elf_x86_64_allocate_dynrelocs, |
eb4ff4d6 | 2661 | info); |
c434dee6 | 2662 | |
c25bc9fc L |
2663 | /* Allocate .plt and .got entries, and space for local symbols. */ |
2664 | htab_traverse (htab->loc_hash_table, | |
351f65ca | 2665 | elf_x86_64_allocate_local_dynrelocs, |
c25bc9fc L |
2666 | info); |
2667 | ||
67a4f2b7 AO |
2668 | /* For every jump slot reserved in the sgotplt, reloc_count is |
2669 | incremented. However, when we reserve space for TLS descriptors, | |
2670 | it's not incremented, so in order to compute the space reserved | |
2671 | for them, it suffices to multiply the reloc count by the jump | |
e1f98742 L |
2672 | slot size. |
2673 | ||
2674 | PR ld/13302: We start next_irelative_index at the end of .rela.plt | |
2675 | so that R_X86_64_IRELATIVE entries come last. */ | |
6de2ae4a | 2676 | if (htab->elf.srelplt) |
e1f98742 L |
2677 | { |
2678 | htab->sgotplt_jump_table_size | |
2679 | = elf_x86_64_compute_jump_table_size (htab); | |
2680 | htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1; | |
2681 | } | |
2682 | else if (htab->elf.irelplt) | |
2683 | htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1; | |
67a4f2b7 AO |
2684 | |
2685 | if (htab->tlsdesc_plt) | |
2686 | { | |
2687 | /* If we're not using lazy TLS relocations, don't generate the | |
2688 | PLT and GOT entries they require. */ | |
2689 | if ((info->flags & DF_BIND_NOW)) | |
2690 | htab->tlsdesc_plt = 0; | |
2691 | else | |
2692 | { | |
6de2ae4a L |
2693 | htab->tlsdesc_got = htab->elf.sgot->size; |
2694 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
67a4f2b7 AO |
2695 | /* Reserve room for the initial entry. |
2696 | FIXME: we could probably do away with it in this case. */ | |
6de2ae4a L |
2697 | if (htab->elf.splt->size == 0) |
2698 | htab->elf.splt->size += PLT_ENTRY_SIZE; | |
2699 | htab->tlsdesc_plt = htab->elf.splt->size; | |
2700 | htab->elf.splt->size += PLT_ENTRY_SIZE; | |
67a4f2b7 AO |
2701 | } |
2702 | } | |
2703 | ||
a7b16ceb L |
2704 | if (htab->elf.sgotplt) |
2705 | { | |
e28df02b L |
2706 | struct elf_link_hash_entry *got; |
2707 | got = elf_link_hash_lookup (elf_hash_table (info), | |
2708 | "_GLOBAL_OFFSET_TABLE_", | |
2709 | FALSE, FALSE, FALSE); | |
2710 | ||
a7b16ceb | 2711 | /* Don't allocate .got.plt section if there are no GOT nor PLT |
e28df02b L |
2712 | entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ |
2713 | if ((got == NULL | |
2714 | || !got->ref_regular_nonweak) | |
2715 | && (htab->elf.sgotplt->size | |
2716 | == get_elf_backend_data (output_bfd)->got_header_size) | |
a7b16ceb L |
2717 | && (htab->elf.splt == NULL |
2718 | || htab->elf.splt->size == 0) | |
2719 | && (htab->elf.sgot == NULL | |
2720 | || htab->elf.sgot->size == 0) | |
2721 | && (htab->elf.iplt == NULL | |
2722 | || htab->elf.iplt->size == 0) | |
2723 | && (htab->elf.igotplt == NULL | |
2724 | || htab->elf.igotplt->size == 0)) | |
2725 | htab->elf.sgotplt->size = 0; | |
2726 | } | |
2727 | ||
c434dee6 AJ |
2728 | /* We now have determined the sizes of the various dynamic sections. |
2729 | Allocate memory for them. */ | |
b34976b6 | 2730 | relocs = FALSE; |
c434dee6 AJ |
2731 | for (s = dynobj->sections; s != NULL; s = s->next) |
2732 | { | |
2733 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2734 | continue; | |
2735 | ||
6de2ae4a L |
2736 | if (s == htab->elf.splt |
2737 | || s == htab->elf.sgot | |
2738 | || s == htab->elf.sgotplt | |
2739 | || s == htab->elf.iplt | |
2740 | || s == htab->elf.igotplt | |
75ff4589 | 2741 | || s == htab->sdynbss) |
c434dee6 AJ |
2742 | { |
2743 | /* Strip this section if we don't need it; see the | |
2744 | comment below. */ | |
2745 | } | |
0112cd26 | 2746 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
c434dee6 | 2747 | { |
6de2ae4a | 2748 | if (s->size != 0 && s != htab->elf.srelplt) |
b34976b6 | 2749 | relocs = TRUE; |
c434dee6 AJ |
2750 | |
2751 | /* We use the reloc_count field as a counter if we need | |
2752 | to copy relocs into the output file. */ | |
6de2ae4a | 2753 | if (s != htab->elf.srelplt) |
67a4f2b7 | 2754 | s->reloc_count = 0; |
70256ad8 | 2755 | } |
c434dee6 | 2756 | else |
70256ad8 AJ |
2757 | { |
2758 | /* It's not one of our sections, so don't allocate space. */ | |
2759 | continue; | |
2760 | } | |
2761 | ||
eea6121a | 2762 | if (s->size == 0) |
70256ad8 | 2763 | { |
c434dee6 AJ |
2764 | /* If we don't need this section, strip it from the |
2765 | output file. This is mostly to handle .rela.bss and | |
2766 | .rela.plt. We must create both sections in | |
2767 | create_dynamic_sections, because they must be created | |
2768 | before the linker maps input sections to output | |
2769 | sections. The linker does that before | |
2770 | adjust_dynamic_symbol is called, and it is that | |
2771 | function which decides whether anything needs to go | |
2772 | into these sections. */ | |
2773 | ||
8423293d | 2774 | s->flags |= SEC_EXCLUDE; |
70256ad8 AJ |
2775 | continue; |
2776 | } | |
2777 | ||
c456f082 AM |
2778 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2779 | continue; | |
2780 | ||
70256ad8 AJ |
2781 | /* Allocate memory for the section contents. We use bfd_zalloc |
2782 | here in case unused entries are not reclaimed before the | |
2783 | section's contents are written out. This should not happen, | |
2784 | but this way if it does, we get a R_X86_64_NONE reloc instead | |
2785 | of garbage. */ | |
eea6121a | 2786 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c434dee6 | 2787 | if (s->contents == NULL) |
b34976b6 | 2788 | return FALSE; |
70256ad8 AJ |
2789 | } |
2790 | ||
e41b3a13 JJ |
2791 | if (htab->plt_eh_frame != NULL |
2792 | && htab->elf.splt != NULL | |
2793 | && htab->elf.splt->size != 0 | |
2794 | && (htab->elf.splt->flags & SEC_EXCLUDE) == 0) | |
2795 | bfd_put_32 (dynobj, htab->elf.splt->size, | |
2796 | htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET); | |
2797 | ||
c434dee6 | 2798 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
2799 | { |
2800 | /* Add some entries to the .dynamic section. We fill in the | |
351f65ca | 2801 | values later, in elf_x86_64_finish_dynamic_sections, but we |
70256ad8 | 2802 | must add the entries now so that we get the correct size for |
407443a3 | 2803 | the .dynamic section. The DT_DEBUG entry is filled in by the |
70256ad8 | 2804 | dynamic linker and used by the debugger. */ |
dc810e39 | 2805 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2806 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2807 | |
36af4a4e | 2808 | if (info->executable) |
70256ad8 | 2809 | { |
dc810e39 | 2810 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2811 | return FALSE; |
70256ad8 AJ |
2812 | } |
2813 | ||
6de2ae4a | 2814 | if (htab->elf.splt->size != 0) |
70256ad8 | 2815 | { |
dc810e39 AM |
2816 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2817 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2818 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2819 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2820 | return FALSE; |
67a4f2b7 AO |
2821 | |
2822 | if (htab->tlsdesc_plt | |
2823 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
2824 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
2825 | return FALSE; | |
70256ad8 AJ |
2826 | } |
2827 | ||
2828 | if (relocs) | |
2829 | { | |
dc810e39 AM |
2830 | if (!add_dynamic_entry (DT_RELA, 0) |
2831 | || !add_dynamic_entry (DT_RELASZ, 0) | |
351f65ca | 2832 | || !add_dynamic_entry (DT_RELAENT, bed->s->sizeof_rela)) |
b34976b6 | 2833 | return FALSE; |
70256ad8 | 2834 | |
c434dee6 AJ |
2835 | /* If any dynamic relocs apply to a read-only section, |
2836 | then we need a DT_TEXTREL entry. */ | |
2837 | if ((info->flags & DF_TEXTREL) == 0) | |
eb4ff4d6 | 2838 | elf_link_hash_traverse (&htab->elf, |
351f65ca | 2839 | elf_x86_64_readonly_dynrelocs, |
eb4ff4d6 | 2840 | info); |
c434dee6 AJ |
2841 | |
2842 | if ((info->flags & DF_TEXTREL) != 0) | |
2843 | { | |
2844 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2845 | return FALSE; |
c434dee6 | 2846 | } |
70256ad8 AJ |
2847 | } |
2848 | } | |
dc810e39 | 2849 | #undef add_dynamic_entry |
70256ad8 | 2850 | |
b34976b6 | 2851 | return TRUE; |
70256ad8 AJ |
2852 | } |
2853 | ||
67a4f2b7 | 2854 | static bfd_boolean |
351f65ca L |
2855 | elf_x86_64_always_size_sections (bfd *output_bfd, |
2856 | struct bfd_link_info *info) | |
67a4f2b7 AO |
2857 | { |
2858 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
2859 | ||
2860 | if (tls_sec) | |
2861 | { | |
2862 | struct elf_link_hash_entry *tlsbase; | |
2863 | ||
2864 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
2865 | "_TLS_MODULE_BASE_", | |
2866 | FALSE, FALSE, FALSE); | |
2867 | ||
2868 | if (tlsbase && tlsbase->type == STT_TLS) | |
2869 | { | |
351f65ca | 2870 | struct elf_x86_64_link_hash_table *htab; |
67a4f2b7 AO |
2871 | struct bfd_link_hash_entry *bh = NULL; |
2872 | const struct elf_backend_data *bed | |
2873 | = get_elf_backend_data (output_bfd); | |
2874 | ||
351f65ca | 2875 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2876 | if (htab == NULL) |
2877 | return FALSE; | |
2878 | ||
67a4f2b7 AO |
2879 | if (!(_bfd_generic_link_add_one_symbol |
2880 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
2881 | tls_sec, 0, NULL, FALSE, | |
2882 | bed->collect, &bh))) | |
2883 | return FALSE; | |
9f03412a | 2884 | |
4dfe6ac6 | 2885 | htab->tls_module_base = bh; |
9f03412a | 2886 | |
67a4f2b7 AO |
2887 | tlsbase = (struct elf_link_hash_entry *)bh; |
2888 | tlsbase->def_regular = 1; | |
2889 | tlsbase->other = STV_HIDDEN; | |
2890 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
2891 | } | |
2892 | } | |
2893 | ||
2894 | return TRUE; | |
2895 | } | |
2896 | ||
9f03412a AO |
2897 | /* _TLS_MODULE_BASE_ needs to be treated especially when linking |
2898 | executables. Rather than setting it to the beginning of the TLS | |
2899 | section, we have to set it to the end. This function may be called | |
2900 | multiple times, it is idempotent. */ | |
2901 | ||
2902 | static void | |
351f65ca | 2903 | elf_x86_64_set_tls_module_base (struct bfd_link_info *info) |
9f03412a | 2904 | { |
351f65ca | 2905 | struct elf_x86_64_link_hash_table *htab; |
9f03412a AO |
2906 | struct bfd_link_hash_entry *base; |
2907 | ||
2908 | if (!info->executable) | |
2909 | return; | |
2910 | ||
351f65ca | 2911 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2912 | if (htab == NULL) |
2913 | return; | |
9f03412a | 2914 | |
4dfe6ac6 NC |
2915 | base = htab->tls_module_base; |
2916 | if (base == NULL) | |
9f03412a AO |
2917 | return; |
2918 | ||
4dfe6ac6 | 2919 | base->u.def.value = htab->elf.tls_size; |
9f03412a AO |
2920 | } |
2921 | ||
bffbf940 JJ |
2922 | /* Return the base VMA address which should be subtracted from real addresses |
2923 | when resolving @dtpoff relocation. | |
2924 | This is PT_TLS segment p_vaddr. */ | |
2925 | ||
2926 | static bfd_vma | |
351f65ca | 2927 | elf_x86_64_dtpoff_base (struct bfd_link_info *info) |
bffbf940 | 2928 | { |
e1918d23 AM |
2929 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2930 | if (elf_hash_table (info)->tls_sec == NULL) | |
bffbf940 | 2931 | return 0; |
e1918d23 | 2932 | return elf_hash_table (info)->tls_sec->vma; |
bffbf940 JJ |
2933 | } |
2934 | ||
2935 | /* Return the relocation value for @tpoff relocation | |
2936 | if STT_TLS virtual address is ADDRESS. */ | |
2937 | ||
2938 | static bfd_vma | |
351f65ca | 2939 | elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address) |
bffbf940 | 2940 | { |
e1918d23 | 2941 | struct elf_link_hash_table *htab = elf_hash_table (info); |
7dc98aea RO |
2942 | const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd); |
2943 | bfd_vma static_tls_size; | |
bffbf940 JJ |
2944 | |
2945 | /* If tls_segment is NULL, we should have signalled an error already. */ | |
e1918d23 | 2946 | if (htab->tls_sec == NULL) |
bffbf940 | 2947 | return 0; |
7dc98aea RO |
2948 | |
2949 | /* Consider special static TLS alignment requirements. */ | |
2950 | static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment); | |
2951 | return address - static_tls_size - htab->tls_sec->vma; | |
bffbf940 JJ |
2952 | } |
2953 | ||
90f487df L |
2954 | /* Is the instruction before OFFSET in CONTENTS a 32bit relative |
2955 | branch? */ | |
2956 | ||
2957 | static bfd_boolean | |
2958 | is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset) | |
2959 | { | |
2960 | /* Opcode Instruction | |
2961 | 0xe8 call | |
2962 | 0xe9 jump | |
2963 | 0x0f 0x8x conditional jump */ | |
2964 | return ((offset > 0 | |
2965 | && (contents [offset - 1] == 0xe8 | |
2966 | || contents [offset - 1] == 0xe9)) | |
2967 | || (offset > 1 | |
2968 | && contents [offset - 2] == 0x0f | |
2969 | && (contents [offset - 1] & 0xf0) == 0x80)); | |
2970 | } | |
2971 | ||
8d88c4ca NC |
2972 | /* Relocate an x86_64 ELF section. */ |
2973 | ||
b34976b6 | 2974 | static bfd_boolean |
351f65ca L |
2975 | elf_x86_64_relocate_section (bfd *output_bfd, |
2976 | struct bfd_link_info *info, | |
2977 | bfd *input_bfd, | |
2978 | asection *input_section, | |
2979 | bfd_byte *contents, | |
2980 | Elf_Internal_Rela *relocs, | |
2981 | Elf_Internal_Sym *local_syms, | |
2982 | asection **local_sections) | |
8d88c4ca | 2983 | { |
351f65ca | 2984 | struct elf_x86_64_link_hash_table *htab; |
8d88c4ca NC |
2985 | Elf_Internal_Shdr *symtab_hdr; |
2986 | struct elf_link_hash_entry **sym_hashes; | |
2987 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 2988 | bfd_vma *local_tlsdesc_gotents; |
c434dee6 | 2989 | Elf_Internal_Rela *rel; |
8d88c4ca NC |
2990 | Elf_Internal_Rela *relend; |
2991 | ||
0ffa91dd NC |
2992 | BFD_ASSERT (is_x86_64_elf (input_bfd)); |
2993 | ||
351f65ca | 2994 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2995 | if (htab == NULL) |
2996 | return FALSE; | |
0ffa91dd | 2997 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
8d88c4ca NC |
2998 | sym_hashes = elf_sym_hashes (input_bfd); |
2999 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
351f65ca | 3000 | local_tlsdesc_gotents = elf_x86_64_local_tlsdesc_gotent (input_bfd); |
8d88c4ca | 3001 | |
351f65ca | 3002 | elf_x86_64_set_tls_module_base (info); |
9f03412a | 3003 | |
c434dee6 | 3004 | rel = relocs; |
8d88c4ca | 3005 | relend = relocs + input_section->reloc_count; |
c434dee6 | 3006 | for (; rel < relend; rel++) |
8d88c4ca | 3007 | { |
bffbf940 | 3008 | unsigned int r_type; |
8d88c4ca NC |
3009 | reloc_howto_type *howto; |
3010 | unsigned long r_symndx; | |
3011 | struct elf_link_hash_entry *h; | |
3012 | Elf_Internal_Sym *sym; | |
3013 | asection *sec; | |
67a4f2b7 | 3014 | bfd_vma off, offplt; |
8d88c4ca | 3015 | bfd_vma relocation; |
b34976b6 | 3016 | bfd_boolean unresolved_reloc; |
8d88c4ca | 3017 | bfd_reloc_status_type r; |
bffbf940 | 3018 | int tls_type; |
cbe950e9 | 3019 | asection *base_got; |
8d88c4ca | 3020 | |
351f65ca | 3021 | r_type = ELF32_R_TYPE (rel->r_info); |
fe4770f4 AJ |
3022 | if (r_type == (int) R_X86_64_GNU_VTINHERIT |
3023 | || r_type == (int) R_X86_64_GNU_VTENTRY) | |
3024 | continue; | |
8d88c4ca | 3025 | |
bffbf940 | 3026 | if (r_type >= R_X86_64_max) |
8da6118f KH |
3027 | { |
3028 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3029 | return FALSE; |
8da6118f | 3030 | } |
8d88c4ca | 3031 | |
d7921315 L |
3032 | if (r_type != (int) R_X86_64_32 |
3033 | || ABI_64_P (output_bfd)) | |
3034 | howto = x86_64_elf_howto_table + r_type; | |
3035 | else | |
3036 | howto = (x86_64_elf_howto_table | |
3037 | + ARRAY_SIZE (x86_64_elf_howto_table) - 1); | |
351f65ca | 3038 | r_symndx = htab->r_sym (rel->r_info); |
8d88c4ca NC |
3039 | h = NULL; |
3040 | sym = NULL; | |
3041 | sec = NULL; | |
b34976b6 | 3042 | unresolved_reloc = FALSE; |
8d88c4ca | 3043 | if (r_symndx < symtab_hdr->sh_info) |
8da6118f KH |
3044 | { |
3045 | sym = local_syms + r_symndx; | |
3046 | sec = local_sections[r_symndx]; | |
c434dee6 | 3047 | |
c25bc9fc L |
3048 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, |
3049 | &sec, rel); | |
3050 | ||
3051 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
1f85278f | 3052 | if (!info->relocatable |
351f65ca | 3053 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
c25bc9fc | 3054 | { |
351f65ca L |
3055 | h = elf_x86_64_get_local_sym_hash (htab, input_bfd, |
3056 | rel, FALSE); | |
c25bc9fc L |
3057 | if (h == NULL) |
3058 | abort (); | |
3059 | ||
3060 | /* Set STT_GNU_IFUNC symbol value. */ | |
3061 | h->root.u.def.value = sym->st_value; | |
3062 | h->root.u.def.section = sec; | |
3063 | } | |
8da6118f | 3064 | } |
8d88c4ca | 3065 | else |
8da6118f | 3066 | { |
c9736ba0 | 3067 | bfd_boolean warned ATTRIBUTE_UNUSED; |
c434dee6 | 3068 | |
b2a8e766 AM |
3069 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3070 | r_symndx, symtab_hdr, sym_hashes, | |
3071 | h, sec, relocation, | |
3072 | unresolved_reloc, warned); | |
8da6118f | 3073 | } |
ab96bf03 AM |
3074 | |
3075 | if (sec != NULL && elf_discarded_section (sec)) | |
0672748a L |
3076 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
3077 | rel, relend, howto, contents); | |
ab96bf03 AM |
3078 | |
3079 | if (info->relocatable) | |
3080 | continue; | |
3081 | ||
64d25c44 L |
3082 | if (rel->r_addend == 0 |
3083 | && r_type == R_X86_64_64 | |
3084 | && !ABI_64_P (output_bfd)) | |
3085 | { | |
3086 | /* For x32, treat R_X86_64_64 like R_X86_64_32 and zero-extend | |
3087 | it to 64bit if addend is zero. */ | |
3088 | r_type = R_X86_64_32; | |
3089 | memset (contents + rel->r_offset + 4, 0, 4); | |
3090 | } | |
3091 | ||
cbe950e9 L |
3092 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
3093 | it here if it is defined in a non-shared object. */ | |
3094 | if (h != NULL | |
3095 | && h->type == STT_GNU_IFUNC | |
3096 | && h->def_regular) | |
3097 | { | |
3098 | asection *plt; | |
3099 | bfd_vma plt_index; | |
4c544807 | 3100 | const char *name; |
cbe950e9 L |
3101 | |
3102 | if ((input_section->flags & SEC_ALLOC) == 0 | |
3103 | || h->plt.offset == (bfd_vma) -1) | |
3104 | abort (); | |
3105 | ||
3106 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
6de2ae4a | 3107 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
cbe950e9 L |
3108 | relocation = (plt->output_section->vma |
3109 | + plt->output_offset + h->plt.offset); | |
3110 | ||
3111 | switch (r_type) | |
3112 | { | |
3113 | default: | |
4c544807 L |
3114 | if (h->root.root.string) |
3115 | name = h->root.root.string; | |
3116 | else | |
3117 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3118 | NULL); | |
cbe950e9 L |
3119 | (*_bfd_error_handler) |
3120 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
3121 | "symbol `%s' isn't handled by %s"), input_bfd, | |
3122 | x86_64_elf_howto_table[r_type].name, | |
4c544807 | 3123 | name, __FUNCTION__); |
cbe950e9 L |
3124 | bfd_set_error (bfd_error_bad_value); |
3125 | return FALSE; | |
3126 | ||
3127 | case R_X86_64_32S: | |
710ab287 | 3128 | if (info->shared) |
cbe950e9 | 3129 | abort (); |
710ab287 L |
3130 | goto do_relocation; |
3131 | ||
248775ba L |
3132 | case R_X86_64_32: |
3133 | if (ABI_64_P (output_bfd)) | |
3134 | goto do_relocation; | |
17672001 | 3135 | /* FALLTHROUGH */ |
710ab287 L |
3136 | case R_X86_64_64: |
3137 | if (rel->r_addend != 0) | |
3138 | { | |
4c544807 L |
3139 | if (h->root.root.string) |
3140 | name = h->root.root.string; | |
3141 | else | |
3142 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
3143 | sym, NULL); | |
710ab287 L |
3144 | (*_bfd_error_handler) |
3145 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
3146 | "symbol `%s' has non-zero addend: %d"), | |
3147 | input_bfd, x86_64_elf_howto_table[r_type].name, | |
4c544807 | 3148 | name, rel->r_addend); |
710ab287 L |
3149 | bfd_set_error (bfd_error_bad_value); |
3150 | return FALSE; | |
3151 | } | |
3152 | ||
3153 | /* Generate dynamic relcoation only when there is a | |
c293fa49 | 3154 | non-GOT reference in a shared object. */ |
710ab287 L |
3155 | if (info->shared && h->non_got_ref) |
3156 | { | |
3157 | Elf_Internal_Rela outrel; | |
710ab287 | 3158 | asection *sreloc; |
98920172 | 3159 | bfd_boolean relocate; |
710ab287 | 3160 | |
c25bc9fc L |
3161 | /* Need a dynamic relocation to get the real function |
3162 | address. */ | |
710ab287 L |
3163 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, |
3164 | info, | |
3165 | input_section, | |
3166 | rel->r_offset); | |
3167 | if (outrel.r_offset == (bfd_vma) -1 | |
3168 | || outrel.r_offset == (bfd_vma) -2) | |
3169 | abort (); | |
3170 | ||
3171 | outrel.r_offset += (input_section->output_section->vma | |
3172 | + input_section->output_offset); | |
3173 | ||
3174 | if (h->dynindx == -1 | |
44c4ea11 L |
3175 | || h->forced_local |
3176 | || info->executable) | |
710ab287 L |
3177 | { |
3178 | /* This symbol is resolved locally. */ | |
98920172 L |
3179 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
3180 | outrel.r_addend = relocation; | |
3181 | relocate = FALSE; | |
710ab287 L |
3182 | } |
3183 | else | |
3184 | { | |
351f65ca | 3185 | outrel.r_info = htab->r_info (h->dynindx, r_type); |
710ab287 | 3186 | outrel.r_addend = 0; |
98920172 | 3187 | relocate = FALSE; |
710ab287 L |
3188 | } |
3189 | ||
6de2ae4a | 3190 | sreloc = htab->elf.irelifunc; |
351f65ca | 3191 | elf_append_rela (output_bfd, sreloc, &outrel); |
710ab287 L |
3192 | |
3193 | /* If this reloc is against an external symbol, we | |
3194 | do not want to fiddle with the addend. Otherwise, | |
3195 | we need to include the symbol value so that it | |
3196 | becomes an addend for the dynamic reloc. For an | |
3197 | internal symbol, we have updated addend. */ | |
98920172 L |
3198 | if (! relocate) |
3199 | continue; | |
710ab287 | 3200 | } |
17672001 | 3201 | /* FALLTHROUGH */ |
cbe950e9 L |
3202 | case R_X86_64_PC32: |
3203 | case R_X86_64_PC64: | |
3204 | case R_X86_64_PLT32: | |
3205 | goto do_relocation; | |
3206 | ||
3207 | case R_X86_64_GOTPCREL: | |
3208 | case R_X86_64_GOTPCREL64: | |
6de2ae4a | 3209 | base_got = htab->elf.sgot; |
cbe950e9 L |
3210 | off = h->got.offset; |
3211 | ||
7afd84dc | 3212 | if (base_got == NULL) |
cbe950e9 L |
3213 | abort (); |
3214 | ||
7afd84dc | 3215 | if (off == (bfd_vma) -1) |
cbe950e9 | 3216 | { |
7afd84dc L |
3217 | /* We can't use h->got.offset here to save state, or |
3218 | even just remember the offset, as finish_dynamic_symbol | |
3219 | would use that as offset into .got. */ | |
cbe950e9 | 3220 | |
6de2ae4a | 3221 | if (htab->elf.splt != NULL) |
7afd84dc L |
3222 | { |
3223 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3224 | off = (plt_index + 3) * GOT_ENTRY_SIZE; | |
6de2ae4a | 3225 | base_got = htab->elf.sgotplt; |
7afd84dc | 3226 | } |
cbe950e9 L |
3227 | else |
3228 | { | |
7afd84dc L |
3229 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; |
3230 | off = plt_index * GOT_ENTRY_SIZE; | |
6de2ae4a | 3231 | base_got = htab->elf.igotplt; |
7afd84dc L |
3232 | } |
3233 | ||
3234 | if (h->dynindx == -1 | |
3235 | || h->forced_local | |
3236 | || info->symbolic) | |
3237 | { | |
3238 | /* This references the local defitionion. We must | |
3239 | initialize this entry in the global offset table. | |
3240 | Since the offset must always be a multiple of 8, | |
3241 | we use the least significant bit to record | |
3242 | whether we have initialized it already. | |
3243 | ||
3244 | When doing a dynamic link, we create a .rela.got | |
3245 | relocation entry to initialize the value. This | |
3246 | is done in the finish_dynamic_symbol routine. */ | |
3247 | if ((off & 1) != 0) | |
3248 | off &= ~1; | |
3249 | else | |
3250 | { | |
3251 | bfd_put_64 (output_bfd, relocation, | |
3252 | base_got->contents + off); | |
3253 | /* Note that this is harmless for the GOTPLT64 | |
3254 | case, as -1 | 1 still is -1. */ | |
3255 | h->got.offset |= 1; | |
3256 | } | |
cbe950e9 L |
3257 | } |
3258 | } | |
3259 | ||
3260 | relocation = (base_got->output_section->vma | |
3261 | + base_got->output_offset + off); | |
3262 | ||
cbe950e9 L |
3263 | goto do_relocation; |
3264 | } | |
3265 | } | |
3266 | ||
70256ad8 AJ |
3267 | /* When generating a shared object, the relocations handled here are |
3268 | copied into the output file to be resolved at run time. */ | |
3269 | switch (r_type) | |
3270 | { | |
3271 | case R_X86_64_GOT32: | |
7b81dfbb | 3272 | case R_X86_64_GOT64: |
70256ad8 AJ |
3273 | /* Relocation is to the entry for this symbol in the global |
3274 | offset table. */ | |
70256ad8 | 3275 | case R_X86_64_GOTPCREL: |
7b81dfbb AJ |
3276 | case R_X86_64_GOTPCREL64: |
3277 | /* Use global offset table entry as symbol value. */ | |
3278 | case R_X86_64_GOTPLT64: | |
3279 | /* This is the same as GOT64 for relocation purposes, but | |
3280 | indicates the existence of a PLT entry. The difficulty is, | |
3281 | that we must calculate the GOT slot offset from the PLT | |
3282 | offset, if this symbol got a PLT entry (it was global). | |
3283 | Additionally if it's computed from the PLT entry, then that | |
3284 | GOT offset is relative to .got.plt, not to .got. */ | |
6de2ae4a | 3285 | base_got = htab->elf.sgot; |
7b81dfbb | 3286 | |
6de2ae4a | 3287 | if (htab->elf.sgot == NULL) |
c434dee6 | 3288 | abort (); |
053579d7 | 3289 | |
51e0a107 | 3290 | if (h != NULL) |
70256ad8 | 3291 | { |
b34976b6 | 3292 | bfd_boolean dyn; |
c434dee6 AJ |
3293 | |
3294 | off = h->got.offset; | |
7b81dfbb AJ |
3295 | if (h->needs_plt |
3296 | && h->plt.offset != (bfd_vma)-1 | |
3297 | && off == (bfd_vma)-1) | |
3298 | { | |
3299 | /* We can't use h->got.offset here to save | |
3300 | state, or even just remember the offset, as | |
3301 | finish_dynamic_symbol would use that as offset into | |
3302 | .got. */ | |
3303 | bfd_vma plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3304 | off = (plt_index + 3) * GOT_ENTRY_SIZE; | |
6de2ae4a | 3305 | base_got = htab->elf.sgotplt; |
7b81dfbb AJ |
3306 | } |
3307 | ||
c434dee6 | 3308 | dyn = htab->elf.dynamic_sections_created; |
51e0a107 | 3309 | |
27482721 | 3310 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
51e0a107 | 3311 | || (info->shared |
27482721 | 3312 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4bc6e03a AJ |
3313 | || (ELF_ST_VISIBILITY (h->other) |
3314 | && h->root.type == bfd_link_hash_undefweak)) | |
51e0a107 JH |
3315 | { |
3316 | /* This is actually a static link, or it is a -Bsymbolic | |
3317 | link and the symbol is defined locally, or the symbol | |
407443a3 | 3318 | was forced to be local because of a version file. We |
51e0a107 JH |
3319 | must initialize this entry in the global offset table. |
3320 | Since the offset must always be a multiple of 8, we | |
3321 | use the least significant bit to record whether we | |
3322 | have initialized it already. | |
3323 | ||
3324 | When doing a dynamic link, we create a .rela.got | |
407443a3 AJ |
3325 | relocation entry to initialize the value. This is |
3326 | done in the finish_dynamic_symbol routine. */ | |
51e0a107 JH |
3327 | if ((off & 1) != 0) |
3328 | off &= ~1; | |
3329 | else | |
3330 | { | |
3331 | bfd_put_64 (output_bfd, relocation, | |
7b81dfbb AJ |
3332 | base_got->contents + off); |
3333 | /* Note that this is harmless for the GOTPLT64 case, | |
3334 | as -1 | 1 still is -1. */ | |
51e0a107 JH |
3335 | h->got.offset |= 1; |
3336 | } | |
3337 | } | |
053579d7 | 3338 | else |
b34976b6 | 3339 | unresolved_reloc = FALSE; |
70256ad8 | 3340 | } |
51e0a107 JH |
3341 | else |
3342 | { | |
c434dee6 AJ |
3343 | if (local_got_offsets == NULL) |
3344 | abort (); | |
51e0a107 JH |
3345 | |
3346 | off = local_got_offsets[r_symndx]; | |
3347 | ||
3348 | /* The offset must always be a multiple of 8. We use | |
407443a3 AJ |
3349 | the least significant bit to record whether we have |
3350 | already generated the necessary reloc. */ | |
51e0a107 JH |
3351 | if ((off & 1) != 0) |
3352 | off &= ~1; | |
3353 | else | |
3354 | { | |
c434dee6 | 3355 | bfd_put_64 (output_bfd, relocation, |
7b81dfbb | 3356 | base_got->contents + off); |
51e0a107 JH |
3357 | |
3358 | if (info->shared) | |
3359 | { | |
947216bf | 3360 | asection *s; |
51e0a107 | 3361 | Elf_Internal_Rela outrel; |
70256ad8 | 3362 | |
51e0a107 JH |
3363 | /* We need to generate a R_X86_64_RELATIVE reloc |
3364 | for the dynamic linker. */ | |
6de2ae4a | 3365 | s = htab->elf.srelgot; |
947216bf | 3366 | if (s == NULL) |
c434dee6 | 3367 | abort (); |
51e0a107 | 3368 | |
7b81dfbb AJ |
3369 | outrel.r_offset = (base_got->output_section->vma |
3370 | + base_got->output_offset | |
51e0a107 | 3371 | + off); |
351f65ca | 3372 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
51e0a107 | 3373 | outrel.r_addend = relocation; |
351f65ca | 3374 | elf_append_rela (output_bfd, s, &outrel); |
51e0a107 JH |
3375 | } |
3376 | ||
3377 | local_got_offsets[r_symndx] |= 1; | |
3378 | } | |
51e0a107 | 3379 | } |
6a2bda3f | 3380 | |
c434dee6 AJ |
3381 | if (off >= (bfd_vma) -2) |
3382 | abort (); | |
3383 | ||
7b81dfbb AJ |
3384 | relocation = base_got->output_section->vma |
3385 | + base_got->output_offset + off; | |
3386 | if (r_type != R_X86_64_GOTPCREL && r_type != R_X86_64_GOTPCREL64) | |
6de2ae4a L |
3387 | relocation -= htab->elf.sgotplt->output_section->vma |
3388 | - htab->elf.sgotplt->output_offset; | |
c434dee6 | 3389 | |
70256ad8 AJ |
3390 | break; |
3391 | ||
d6ab8113 JB |
3392 | case R_X86_64_GOTOFF64: |
3393 | /* Relocation is relative to the start of the global offset | |
3394 | table. */ | |
3395 | ||
3396 | /* Check to make sure it isn't a protected function symbol | |
3397 | for shared library since it may not be local when used | |
3398 | as function address. */ | |
3399 | if (info->shared | |
3400 | && h | |
3401 | && h->def_regular | |
3402 | && h->type == STT_FUNC | |
3403 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
3404 | { | |
3405 | (*_bfd_error_handler) | |
3406 | (_("%B: relocation R_X86_64_GOTOFF64 against protected function `%s' can not be used when making a shared object"), | |
3407 | input_bfd, h->root.root.string); | |
3408 | bfd_set_error (bfd_error_bad_value); | |
3409 | return FALSE; | |
3410 | } | |
3411 | ||
3412 | /* Note that sgot is not involved in this | |
3413 | calculation. We always want the start of .got.plt. If we | |
3414 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
3415 | permitted by the ABI, we might have to change this | |
3416 | calculation. */ | |
6de2ae4a L |
3417 | relocation -= htab->elf.sgotplt->output_section->vma |
3418 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
3419 | break; |
3420 | ||
3421 | case R_X86_64_GOTPC32: | |
7b81dfbb | 3422 | case R_X86_64_GOTPC64: |
d6ab8113 | 3423 | /* Use global offset table as symbol value. */ |
6de2ae4a L |
3424 | relocation = htab->elf.sgotplt->output_section->vma |
3425 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
3426 | unresolved_reloc = FALSE; |
3427 | break; | |
7b81dfbb AJ |
3428 | |
3429 | case R_X86_64_PLTOFF64: | |
3430 | /* Relocation is PLT entry relative to GOT. For local | |
3431 | symbols it's the symbol itself relative to GOT. */ | |
3432 | if (h != NULL | |
3433 | /* See PLT32 handling. */ | |
3434 | && h->plt.offset != (bfd_vma) -1 | |
6de2ae4a | 3435 | && htab->elf.splt != NULL) |
7b81dfbb | 3436 | { |
6de2ae4a L |
3437 | relocation = (htab->elf.splt->output_section->vma |
3438 | + htab->elf.splt->output_offset | |
7b81dfbb AJ |
3439 | + h->plt.offset); |
3440 | unresolved_reloc = FALSE; | |
3441 | } | |
3442 | ||
6de2ae4a L |
3443 | relocation -= htab->elf.sgotplt->output_section->vma |
3444 | + htab->elf.sgotplt->output_offset; | |
7b81dfbb | 3445 | break; |
d6ab8113 | 3446 | |
70256ad8 AJ |
3447 | case R_X86_64_PLT32: |
3448 | /* Relocation is to the entry for this symbol in the | |
3449 | procedure linkage table. */ | |
3450 | ||
3451 | /* Resolve a PLT32 reloc against a local symbol directly, | |
407443a3 | 3452 | without using the procedure linkage table. */ |
70256ad8 AJ |
3453 | if (h == NULL) |
3454 | break; | |
3455 | ||
c434dee6 | 3456 | if (h->plt.offset == (bfd_vma) -1 |
6de2ae4a | 3457 | || htab->elf.splt == NULL) |
70256ad8 AJ |
3458 | { |
3459 | /* We didn't make a PLT entry for this symbol. This | |
407443a3 AJ |
3460 | happens when statically linking PIC code, or when |
3461 | using -Bsymbolic. */ | |
70256ad8 AJ |
3462 | break; |
3463 | } | |
3464 | ||
6de2ae4a L |
3465 | relocation = (htab->elf.splt->output_section->vma |
3466 | + htab->elf.splt->output_offset | |
70256ad8 | 3467 | + h->plt.offset); |
b34976b6 | 3468 | unresolved_reloc = FALSE; |
70256ad8 AJ |
3469 | break; |
3470 | ||
fd8ab9e5 AJ |
3471 | case R_X86_64_PC8: |
3472 | case R_X86_64_PC16: | |
3473 | case R_X86_64_PC32: | |
6610a52d | 3474 | if (info->shared |
ba3bee0b | 3475 | && (input_section->flags & SEC_ALLOC) != 0 |
90f487df | 3476 | && (input_section->flags & SEC_READONLY) != 0 |
41bed6dd | 3477 | && h != NULL) |
6610a52d | 3478 | { |
41bed6dd L |
3479 | bfd_boolean fail = FALSE; |
3480 | bfd_boolean branch | |
3481 | = (r_type == R_X86_64_PC32 | |
3482 | && is_32bit_relative_branch (contents, rel->r_offset)); | |
3483 | ||
3484 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
3485 | { | |
3486 | /* Symbol is referenced locally. Make sure it is | |
3487 | defined locally or for a branch. */ | |
3488 | fail = !h->def_regular && !branch; | |
3489 | } | |
90f487df | 3490 | else |
41bed6dd L |
3491 | { |
3492 | /* Symbol isn't referenced locally. We only allow | |
3493 | branch to symbol with non-default visibility. */ | |
3494 | fail = (!branch | |
3495 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT); | |
3496 | } | |
3497 | ||
3498 | if (fail) | |
3499 | { | |
3500 | const char *fmt; | |
3501 | const char *v; | |
3502 | const char *pic = ""; | |
3503 | ||
3504 | switch (ELF_ST_VISIBILITY (h->other)) | |
3505 | { | |
3506 | case STV_HIDDEN: | |
3507 | v = _("hidden symbol"); | |
3508 | break; | |
3509 | case STV_INTERNAL: | |
3510 | v = _("internal symbol"); | |
3511 | break; | |
3512 | case STV_PROTECTED: | |
3513 | v = _("protected symbol"); | |
3514 | break; | |
3515 | default: | |
3516 | v = _("symbol"); | |
3517 | pic = _("; recompile with -fPIC"); | |
3518 | break; | |
3519 | } | |
3520 | ||
3521 | if (h->def_regular) | |
3522 | fmt = _("%B: relocation %s against %s `%s' can not be used when making a shared object%s"); | |
3523 | else | |
3524 | fmt = _("%B: relocation %s against undefined %s `%s' can not be used when making a shared object%s"); | |
3525 | ||
3526 | (*_bfd_error_handler) (fmt, input_bfd, | |
3527 | x86_64_elf_howto_table[r_type].name, | |
3528 | v, h->root.root.string, pic); | |
3529 | bfd_set_error (bfd_error_bad_value); | |
3530 | return FALSE; | |
3531 | } | |
6610a52d L |
3532 | } |
3533 | /* Fall through. */ | |
3534 | ||
70256ad8 AJ |
3535 | case R_X86_64_8: |
3536 | case R_X86_64_16: | |
3537 | case R_X86_64_32: | |
d6ab8113 | 3538 | case R_X86_64_PC64: |
6b3db546 | 3539 | case R_X86_64_64: |
80643fbc | 3540 | /* FIXME: The ABI says the linker should make sure the value is |
407443a3 | 3541 | the same when it's zeroextended to 64 bit. */ |
c434dee6 | 3542 | |
b1e24c02 | 3543 | if ((input_section->flags & SEC_ALLOC) == 0) |
c434dee6 AJ |
3544 | break; |
3545 | ||
3546 | if ((info->shared | |
4bc6e03a AJ |
3547 | && (h == NULL |
3548 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3549 | || h->root.type != bfd_link_hash_undefweak) | |
d8045f23 NC |
3550 | && (! IS_X86_64_PCREL_TYPE (r_type) |
3551 | || ! SYMBOL_CALLS_LOCAL (info, h))) | |
d40d037c AJ |
3552 | || (ELIMINATE_COPY_RELOCS |
3553 | && !info->shared | |
c434dee6 AJ |
3554 | && h != NULL |
3555 | && h->dynindx != -1 | |
f5385ebf AM |
3556 | && !h->non_got_ref |
3557 | && ((h->def_dynamic | |
3558 | && !h->def_regular) | |
c434dee6 | 3559 | || h->root.type == bfd_link_hash_undefweak |
0f88be7a | 3560 | || h->root.type == bfd_link_hash_undefined))) |
70256ad8 AJ |
3561 | { |
3562 | Elf_Internal_Rela outrel; | |
b34976b6 | 3563 | bfd_boolean skip, relocate; |
c434dee6 | 3564 | asection *sreloc; |
70256ad8 AJ |
3565 | |
3566 | /* When generating a shared object, these relocations | |
3567 | are copied into the output file to be resolved at run | |
407443a3 | 3568 | time. */ |
b34976b6 AM |
3569 | skip = FALSE; |
3570 | relocate = FALSE; | |
70256ad8 | 3571 | |
c629eae0 JJ |
3572 | outrel.r_offset = |
3573 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
c434dee6 | 3574 | rel->r_offset); |
c629eae0 | 3575 | if (outrel.r_offset == (bfd_vma) -1) |
b34976b6 | 3576 | skip = TRUE; |
0fb19cbc | 3577 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3578 | skip = TRUE, relocate = TRUE; |
70256ad8 AJ |
3579 | |
3580 | outrel.r_offset += (input_section->output_section->vma | |
3581 | + input_section->output_offset); | |
3582 | ||
3583 | if (skip) | |
0bb2d96a | 3584 | memset (&outrel, 0, sizeof outrel); |
c434dee6 | 3585 | |
fd8ab9e5 AJ |
3586 | /* h->dynindx may be -1 if this symbol was marked to |
3587 | become local. */ | |
3588 | else if (h != NULL | |
c434dee6 | 3589 | && h->dynindx != -1 |
d8045f23 NC |
3590 | && (IS_X86_64_PCREL_TYPE (r_type) |
3591 | || ! info->shared | |
3592 | || ! SYMBOLIC_BIND (info, h) | |
3593 | || ! h->def_regular)) | |
70256ad8 | 3594 | { |
351f65ca | 3595 | outrel.r_info = htab->r_info (h->dynindx, r_type); |
c434dee6 | 3596 | outrel.r_addend = rel->r_addend; |
70256ad8 AJ |
3597 | } |
3598 | else | |
3599 | { | |
c434dee6 | 3600 | /* This symbol is local, or marked to become local. */ |
248775ba | 3601 | if (r_type == htab->pointer_r_type) |
607c0e09 | 3602 | { |
b34976b6 | 3603 | relocate = TRUE; |
351f65ca | 3604 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
607c0e09 AS |
3605 | outrel.r_addend = relocation + rel->r_addend; |
3606 | } | |
64d25c44 L |
3607 | else if (r_type == R_X86_64_64 |
3608 | && !ABI_64_P (output_bfd)) | |
3609 | { | |
3610 | relocate = TRUE; | |
3611 | outrel.r_info = htab->r_info (0, | |
3612 | R_X86_64_RELATIVE64); | |
3613 | outrel.r_addend = relocation + rel->r_addend; | |
3614 | } | |
607c0e09 AS |
3615 | else |
3616 | { | |
3617 | long sindx; | |
3618 | ||
8517fae7 | 3619 | if (bfd_is_abs_section (sec)) |
607c0e09 AS |
3620 | sindx = 0; |
3621 | else if (sec == NULL || sec->owner == NULL) | |
3622 | { | |
3623 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3624 | return FALSE; |
607c0e09 AS |
3625 | } |
3626 | else | |
3627 | { | |
3628 | asection *osec; | |
3629 | ||
74541ad4 AM |
3630 | /* We are turning this relocation into one |
3631 | against a section symbol. It would be | |
3632 | proper to subtract the symbol's value, | |
3633 | osec->vma, from the emitted reloc addend, | |
3634 | but ld.so expects buggy relocs. */ | |
607c0e09 AS |
3635 | osec = sec->output_section; |
3636 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
3637 | if (sindx == 0) |
3638 | { | |
3639 | asection *oi = htab->elf.text_index_section; | |
3640 | sindx = elf_section_data (oi)->dynindx; | |
3641 | } | |
3642 | BFD_ASSERT (sindx != 0); | |
607c0e09 AS |
3643 | } |
3644 | ||
351f65ca | 3645 | outrel.r_info = htab->r_info (sindx, r_type); |
607c0e09 AS |
3646 | outrel.r_addend = relocation + rel->r_addend; |
3647 | } | |
70256ad8 AJ |
3648 | } |
3649 | ||
cbe950e9 | 3650 | sreloc = elf_section_data (input_section)->sreloc; |
d8045f23 | 3651 | |
62d78908 L |
3652 | if (sreloc == NULL || sreloc->contents == NULL) |
3653 | { | |
3654 | r = bfd_reloc_notsupported; | |
3655 | goto check_relocation_error; | |
3656 | } | |
c434dee6 | 3657 | |
351f65ca | 3658 | elf_append_rela (output_bfd, sreloc, &outrel); |
70256ad8 AJ |
3659 | |
3660 | /* If this reloc is against an external symbol, we do | |
3661 | not want to fiddle with the addend. Otherwise, we | |
3662 | need to include the symbol value so that it becomes | |
3663 | an addend for the dynamic reloc. */ | |
0f88be7a | 3664 | if (! relocate) |
70256ad8 AJ |
3665 | continue; |
3666 | } | |
3667 | ||
3668 | break; | |
3669 | ||
bffbf940 | 3670 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
3671 | case R_X86_64_GOTPC32_TLSDESC: |
3672 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 3673 | case R_X86_64_GOTTPOFF: |
bffbf940 JJ |
3674 | tls_type = GOT_UNKNOWN; |
3675 | if (h == NULL && local_got_offsets) | |
351f65ca | 3676 | tls_type = elf_x86_64_local_got_tls_type (input_bfd) [r_symndx]; |
bffbf940 | 3677 | else if (h != NULL) |
351f65ca | 3678 | tls_type = elf_x86_64_hash_entry (h)->tls_type; |
142411ca | 3679 | |
351f65ca L |
3680 | if (! elf_x86_64_tls_transition (info, input_bfd, |
3681 | input_section, contents, | |
3682 | symtab_hdr, sym_hashes, | |
3683 | &r_type, tls_type, rel, | |
3684 | relend, h, r_symndx)) | |
534a31f6 | 3685 | return FALSE; |
bffbf940 JJ |
3686 | |
3687 | if (r_type == R_X86_64_TPOFF32) | |
3688 | { | |
142411ca L |
3689 | bfd_vma roff = rel->r_offset; |
3690 | ||
bffbf940 | 3691 | BFD_ASSERT (! unresolved_reloc); |
142411ca | 3692 | |
351f65ca | 3693 | if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD) |
bffbf940 | 3694 | { |
52bc799a | 3695 | /* GD->LE transition. For 64bit, change |
abcf1d52 | 3696 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
a3fadc9a | 3697 | .word 0x6666; rex64; call __tls_get_addr |
52bc799a | 3698 | into: |
bffbf940 | 3699 | movq %fs:0, %rax |
52bc799a L |
3700 | leaq foo@tpoff(%rax), %rax |
3701 | For 32bit, change | |
3702 | leaq foo@tlsgd(%rip), %rdi | |
3703 | .word 0x6666; rex64; call __tls_get_addr | |
3704 | into: | |
3705 | movl %fs:0, %eax | |
bffbf940 | 3706 | leaq foo@tpoff(%rax), %rax */ |
52bc799a L |
3707 | if (ABI_64_P (output_bfd)) |
3708 | memcpy (contents + roff - 4, | |
3709 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", | |
3710 | 16); | |
3711 | else | |
3712 | memcpy (contents + roff - 3, | |
3713 | "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", | |
3714 | 15); | |
eb4ff4d6 | 3715 | bfd_put_32 (output_bfd, |
351f65ca | 3716 | elf_x86_64_tpoff (info, relocation), |
142411ca | 3717 | contents + roff + 8); |
a3fadc9a | 3718 | /* Skip R_X86_64_PC32/R_X86_64_PLT32. */ |
bffbf940 JJ |
3719 | rel++; |
3720 | continue; | |
3721 | } | |
351f65ca | 3722 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC) |
67a4f2b7 AO |
3723 | { |
3724 | /* GDesc -> LE transition. | |
3725 | It's originally something like: | |
3726 | leaq x@tlsdesc(%rip), %rax | |
3727 | ||
3728 | Change it to: | |
c9736ba0 | 3729 | movl $x@tpoff, %rax. */ |
67a4f2b7 | 3730 | |
c9736ba0 | 3731 | unsigned int val, type; |
67a4f2b7 | 3732 | |
67a4f2b7 | 3733 | type = bfd_get_8 (input_bfd, contents + roff - 3); |
67a4f2b7 | 3734 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
3735 | bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1), |
3736 | contents + roff - 3); | |
3737 | bfd_put_8 (output_bfd, 0xc7, contents + roff - 2); | |
3738 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3739 | contents + roff - 1); | |
eb4ff4d6 | 3740 | bfd_put_32 (output_bfd, |
351f65ca | 3741 | elf_x86_64_tpoff (info, relocation), |
67a4f2b7 AO |
3742 | contents + roff); |
3743 | continue; | |
3744 | } | |
351f65ca | 3745 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL) |
67a4f2b7 AO |
3746 | { |
3747 | /* GDesc -> LE transition. | |
3748 | It's originally: | |
3749 | call *(%rax) | |
3750 | Turn it into: | |
142411ca | 3751 | xchg %ax,%ax. */ |
10efb593 | 3752 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
3753 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3754 | continue; | |
3755 | } | |
351f65ca | 3756 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTTPOFF) |
bffbf940 | 3757 | { |
bffbf940 JJ |
3758 | /* IE->LE transition: |
3759 | Originally it can be one of: | |
3760 | movq foo@gottpoff(%rip), %reg | |
3761 | addq foo@gottpoff(%rip), %reg | |
3762 | We change it into: | |
3763 | movq $foo, %reg | |
3764 | leaq foo(%reg), %reg | |
3765 | addq $foo, %reg. */ | |
142411ca L |
3766 | |
3767 | unsigned int val, type, reg; | |
3768 | ||
3769 | val = bfd_get_8 (input_bfd, contents + roff - 3); | |
3770 | type = bfd_get_8 (input_bfd, contents + roff - 2); | |
3771 | reg = bfd_get_8 (input_bfd, contents + roff - 1); | |
bffbf940 | 3772 | reg >>= 3; |
bffbf940 JJ |
3773 | if (type == 0x8b) |
3774 | { | |
3775 | /* movq */ | |
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, 0xc7, |
142411ca | 3783 | contents + roff - 2); |
bffbf940 | 3784 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 3785 | contents + roff - 1); |
bffbf940 JJ |
3786 | } |
3787 | else if (reg == 4) | |
3788 | { | |
3789 | /* addq -> addq - addressing with %rsp/%r12 is | |
3790 | special */ | |
3791 | if (val == 0x4c) | |
3792 | bfd_put_8 (output_bfd, 0x49, | |
142411ca | 3793 | contents + roff - 3); |
4a4c5f25 L |
3794 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
3795 | bfd_put_8 (output_bfd, 0x41, | |
3796 | contents + roff - 3); | |
bffbf940 | 3797 | bfd_put_8 (output_bfd, 0x81, |
142411ca | 3798 | contents + roff - 2); |
bffbf940 | 3799 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 3800 | contents + roff - 1); |
bffbf940 JJ |
3801 | } |
3802 | else | |
3803 | { | |
3804 | /* addq -> leaq */ | |
3805 | if (val == 0x4c) | |
3806 | bfd_put_8 (output_bfd, 0x4d, | |
142411ca | 3807 | contents + roff - 3); |
4a4c5f25 L |
3808 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
3809 | bfd_put_8 (output_bfd, 0x45, | |
3810 | contents + roff - 3); | |
bffbf940 | 3811 | bfd_put_8 (output_bfd, 0x8d, |
142411ca | 3812 | contents + roff - 2); |
bffbf940 | 3813 | bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3), |
142411ca | 3814 | contents + roff - 1); |
bffbf940 | 3815 | } |
eb4ff4d6 | 3816 | bfd_put_32 (output_bfd, |
351f65ca | 3817 | elf_x86_64_tpoff (info, relocation), |
142411ca | 3818 | contents + roff); |
bffbf940 JJ |
3819 | continue; |
3820 | } | |
142411ca L |
3821 | else |
3822 | BFD_ASSERT (FALSE); | |
bffbf940 JJ |
3823 | } |
3824 | ||
6de2ae4a | 3825 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
3826 | abort (); |
3827 | ||
3828 | if (h != NULL) | |
67a4f2b7 AO |
3829 | { |
3830 | off = h->got.offset; | |
351f65ca | 3831 | offplt = elf_x86_64_hash_entry (h)->tlsdesc_got; |
67a4f2b7 | 3832 | } |
bffbf940 JJ |
3833 | else |
3834 | { | |
3835 | if (local_got_offsets == NULL) | |
3836 | abort (); | |
3837 | ||
3838 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3839 | offplt = local_tlsdesc_gotents[r_symndx]; |
bffbf940 JJ |
3840 | } |
3841 | ||
3842 | if ((off & 1) != 0) | |
3843 | off &= ~1; | |
26e41594 | 3844 | else |
bffbf940 JJ |
3845 | { |
3846 | Elf_Internal_Rela outrel; | |
bffbf940 | 3847 | int dr_type, indx; |
67a4f2b7 | 3848 | asection *sreloc; |
bffbf940 | 3849 | |
6de2ae4a | 3850 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
3851 | abort (); |
3852 | ||
67a4f2b7 AO |
3853 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
3854 | ||
3855 | if (GOT_TLS_GDESC_P (tls_type)) | |
3856 | { | |
351f65ca | 3857 | outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC); |
67a4f2b7 | 3858 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt |
6de2ae4a L |
3859 | + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size); |
3860 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
3861 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3862 | + offplt |
3863 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 3864 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 3865 | if (indx == 0) |
351f65ca | 3866 | outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info); |
67a4f2b7 AO |
3867 | else |
3868 | outrel.r_addend = 0; | |
351f65ca | 3869 | elf_append_rela (output_bfd, sreloc, &outrel); |
67a4f2b7 AO |
3870 | } |
3871 | ||
6de2ae4a | 3872 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 3873 | |
6de2ae4a L |
3874 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3875 | + htab->elf.sgot->output_offset + off); | |
bffbf940 | 3876 | |
67a4f2b7 | 3877 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 | 3878 | dr_type = R_X86_64_DTPMOD64; |
67a4f2b7 AO |
3879 | else if (GOT_TLS_GDESC_P (tls_type)) |
3880 | goto dr_done; | |
bffbf940 JJ |
3881 | else |
3882 | dr_type = R_X86_64_TPOFF64; | |
3883 | ||
6de2ae4a | 3884 | bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off); |
bffbf940 | 3885 | outrel.r_addend = 0; |
67a4f2b7 AO |
3886 | if ((dr_type == R_X86_64_TPOFF64 |
3887 | || dr_type == R_X86_64_TLSDESC) && indx == 0) | |
351f65ca L |
3888 | outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info); |
3889 | outrel.r_info = htab->r_info (indx, dr_type); | |
bffbf940 | 3890 | |
351f65ca | 3891 | elf_append_rela (output_bfd, sreloc, &outrel); |
bffbf940 | 3892 | |
67a4f2b7 | 3893 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 JJ |
3894 | { |
3895 | if (indx == 0) | |
3896 | { | |
d40d037c | 3897 | BFD_ASSERT (! unresolved_reloc); |
bffbf940 | 3898 | bfd_put_64 (output_bfd, |
351f65ca | 3899 | relocation - elf_x86_64_dtpoff_base (info), |
6de2ae4a | 3900 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
bffbf940 JJ |
3901 | } |
3902 | else | |
3903 | { | |
3904 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 3905 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
351f65ca | 3906 | outrel.r_info = htab->r_info (indx, |
bffbf940 JJ |
3907 | R_X86_64_DTPOFF64); |
3908 | outrel.r_offset += GOT_ENTRY_SIZE; | |
351f65ca | 3909 | elf_append_rela (output_bfd, sreloc, |
464d3bd4 | 3910 | &outrel); |
bffbf940 JJ |
3911 | } |
3912 | } | |
3913 | ||
67a4f2b7 | 3914 | dr_done: |
bffbf940 JJ |
3915 | if (h != NULL) |
3916 | h->got.offset |= 1; | |
3917 | else | |
3918 | local_got_offsets[r_symndx] |= 1; | |
3919 | } | |
3920 | ||
67a4f2b7 AO |
3921 | if (off >= (bfd_vma) -2 |
3922 | && ! GOT_TLS_GDESC_P (tls_type)) | |
bffbf940 | 3923 | abort (); |
351f65ca | 3924 | if (r_type == ELF32_R_TYPE (rel->r_info)) |
bffbf940 | 3925 | { |
67a4f2b7 AO |
3926 | if (r_type == R_X86_64_GOTPC32_TLSDESC |
3927 | || r_type == R_X86_64_TLSDESC_CALL) | |
6de2ae4a L |
3928 | relocation = htab->elf.sgotplt->output_section->vma |
3929 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3930 | + offplt + htab->sgotplt_jump_table_size; |
3931 | else | |
6de2ae4a L |
3932 | relocation = htab->elf.sgot->output_section->vma |
3933 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 3934 | unresolved_reloc = FALSE; |
bffbf940 | 3935 | } |
142411ca | 3936 | else |
67a4f2b7 | 3937 | { |
142411ca | 3938 | bfd_vma roff = rel->r_offset; |
67a4f2b7 | 3939 | |
351f65ca | 3940 | if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD) |
142411ca | 3941 | { |
52bc799a | 3942 | /* GD->IE transition. For 64bit, change |
142411ca L |
3943 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
3944 | .word 0x6666; rex64; call __tls_get_addr@plt | |
52bc799a | 3945 | into: |
142411ca | 3946 | movq %fs:0, %rax |
52bc799a L |
3947 | addq foo@gottpoff(%rip), %rax |
3948 | For 32bit, change | |
3949 | leaq foo@tlsgd(%rip), %rdi | |
3950 | .word 0x6666; rex64; call __tls_get_addr@plt | |
3951 | into: | |
3952 | movl %fs:0, %eax | |
142411ca | 3953 | addq foo@gottpoff(%rip), %rax */ |
52bc799a L |
3954 | if (ABI_64_P (output_bfd)) |
3955 | memcpy (contents + roff - 4, | |
3956 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
3957 | 16); | |
3958 | else | |
3959 | memcpy (contents + roff - 3, | |
3960 | "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
3961 | 15); | |
142411ca | 3962 | |
6de2ae4a L |
3963 | relocation = (htab->elf.sgot->output_section->vma |
3964 | + htab->elf.sgot->output_offset + off | |
142411ca L |
3965 | - roff |
3966 | - input_section->output_section->vma | |
3967 | - input_section->output_offset | |
3968 | - 12); | |
3969 | bfd_put_32 (output_bfd, relocation, | |
3970 | contents + roff + 8); | |
3971 | /* Skip R_X86_64_PLT32. */ | |
3972 | rel++; | |
3973 | continue; | |
3974 | } | |
351f65ca | 3975 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC) |
142411ca L |
3976 | { |
3977 | /* GDesc -> IE transition. | |
3978 | It's originally something like: | |
3979 | leaq x@tlsdesc(%rip), %rax | |
67a4f2b7 | 3980 | |
142411ca | 3981 | Change it to: |
c9736ba0 | 3982 | movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */ |
67a4f2b7 | 3983 | |
142411ca L |
3984 | /* Now modify the instruction as appropriate. To |
3985 | turn a leaq into a movq in the form we use it, it | |
3986 | suffices to change the second byte from 0x8d to | |
3987 | 0x8b. */ | |
3988 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
3989 | ||
3990 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
3991 | htab->elf.sgot->output_section->vma |
3992 | + htab->elf.sgot->output_offset + off | |
142411ca L |
3993 | - rel->r_offset |
3994 | - input_section->output_section->vma | |
3995 | - input_section->output_offset | |
3996 | - 4, | |
3997 | contents + roff); | |
3998 | continue; | |
3999 | } | |
351f65ca | 4000 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL) |
142411ca L |
4001 | { |
4002 | /* GDesc -> IE transition. | |
4003 | It's originally: | |
4004 | call *(%rax) | |
4005 | ||
4006 | Change it to: | |
c9736ba0 | 4007 | xchg %ax, %ax. */ |
142411ca | 4008 | |
142411ca L |
4009 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
4010 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); | |
4011 | continue; | |
4012 | } | |
4013 | else | |
4014 | BFD_ASSERT (FALSE); | |
67a4f2b7 | 4015 | } |
bffbf940 JJ |
4016 | break; |
4017 | ||
4018 | case R_X86_64_TLSLD: | |
351f65ca L |
4019 | if (! elf_x86_64_tls_transition (info, input_bfd, |
4020 | input_section, contents, | |
4021 | symtab_hdr, sym_hashes, | |
4022 | &r_type, GOT_UNKNOWN, | |
4023 | rel, relend, h, r_symndx)) | |
142411ca | 4024 | return FALSE; |
a3fadc9a | 4025 | |
142411ca L |
4026 | if (r_type != R_X86_64_TLSLD) |
4027 | { | |
bffbf940 | 4028 | /* LD->LE transition: |
a3fadc9a | 4029 | leaq foo@tlsld(%rip), %rdi; call __tls_get_addr. |
52bc799a L |
4030 | For 64bit, we change it into: |
4031 | .word 0x6666; .byte 0x66; movq %fs:0, %rax. | |
4032 | For 32bit, we change it into: | |
4033 | nopl 0x0(%rax); movl %fs:0, %eax. */ | |
142411ca L |
4034 | |
4035 | BFD_ASSERT (r_type == R_X86_64_TPOFF32); | |
52bc799a L |
4036 | if (ABI_64_P (output_bfd)) |
4037 | memcpy (contents + rel->r_offset - 3, | |
4038 | "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12); | |
4039 | else | |
4040 | memcpy (contents + rel->r_offset - 3, | |
4041 | "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12); | |
a3fadc9a | 4042 | /* Skip R_X86_64_PC32/R_X86_64_PLT32. */ |
bffbf940 JJ |
4043 | rel++; |
4044 | continue; | |
4045 | } | |
4046 | ||
6de2ae4a | 4047 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
4048 | abort (); |
4049 | ||
4050 | off = htab->tls_ld_got.offset; | |
4051 | if (off & 1) | |
4052 | off &= ~1; | |
4053 | else | |
4054 | { | |
4055 | Elf_Internal_Rela outrel; | |
bffbf940 | 4056 | |
6de2ae4a | 4057 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
4058 | abort (); |
4059 | ||
6de2ae4a L |
4060 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
4061 | + htab->elf.sgot->output_offset + off); | |
bffbf940 JJ |
4062 | |
4063 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 4064 | htab->elf.sgot->contents + off); |
bffbf940 | 4065 | bfd_put_64 (output_bfd, 0, |
6de2ae4a | 4066 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
351f65ca | 4067 | outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64); |
bffbf940 | 4068 | outrel.r_addend = 0; |
351f65ca | 4069 | elf_append_rela (output_bfd, htab->elf.srelgot, |
464d3bd4 | 4070 | &outrel); |
bffbf940 JJ |
4071 | htab->tls_ld_got.offset |= 1; |
4072 | } | |
6de2ae4a L |
4073 | relocation = htab->elf.sgot->output_section->vma |
4074 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 4075 | unresolved_reloc = FALSE; |
bffbf940 JJ |
4076 | break; |
4077 | ||
4078 | case R_X86_64_DTPOFF32: | |
1d85728f | 4079 | if (!info->executable|| (input_section->flags & SEC_CODE) == 0) |
351f65ca | 4080 | relocation -= elf_x86_64_dtpoff_base (info); |
bffbf940 | 4081 | else |
351f65ca | 4082 | relocation = elf_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
4083 | break; |
4084 | ||
4085 | case R_X86_64_TPOFF32: | |
6769d501 | 4086 | case R_X86_64_TPOFF64: |
9b769489 | 4087 | BFD_ASSERT (info->executable); |
351f65ca | 4088 | relocation = elf_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
4089 | break; |
4090 | ||
70256ad8 AJ |
4091 | default: |
4092 | break; | |
4093 | } | |
8d88c4ca | 4094 | |
239e1f3a AM |
4095 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
4096 | because such sections are not SEC_ALLOC and thus ld.so will | |
4097 | not process them. */ | |
c434dee6 | 4098 | if (unresolved_reloc |
239e1f3a | 4099 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
4100 | && h->def_dynamic) |
4101 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
4102 | rel->r_offset) != (bfd_vma) -1) | |
c434dee6 | 4103 | (*_bfd_error_handler) |
843fe662 | 4104 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
4105 | input_bfd, |
4106 | input_section, | |
c434dee6 | 4107 | (long) rel->r_offset, |
843fe662 | 4108 | howto->name, |
c434dee6 AJ |
4109 | h->root.root.string); |
4110 | ||
cbe950e9 | 4111 | do_relocation: |
8d88c4ca | 4112 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
c434dee6 AJ |
4113 | contents, rel->r_offset, |
4114 | relocation, rel->r_addend); | |
8d88c4ca | 4115 | |
62d78908 | 4116 | check_relocation_error: |
8d88c4ca | 4117 | if (r != bfd_reloc_ok) |
8da6118f | 4118 | { |
c434dee6 AJ |
4119 | const char *name; |
4120 | ||
4121 | if (h != NULL) | |
4122 | name = h->root.root.string; | |
4123 | else | |
8da6118f | 4124 | { |
c434dee6 AJ |
4125 | name = bfd_elf_string_from_elf_section (input_bfd, |
4126 | symtab_hdr->sh_link, | |
4127 | sym->st_name); | |
4128 | if (name == NULL) | |
b34976b6 | 4129 | return FALSE; |
c434dee6 AJ |
4130 | if (*name == '\0') |
4131 | name = bfd_section_name (input_bfd, sec); | |
4132 | } | |
4133 | ||
4134 | if (r == bfd_reloc_overflow) | |
4135 | { | |
c434dee6 | 4136 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
4137 | (info, (h ? &h->root : NULL), name, howto->name, |
4138 | (bfd_vma) 0, input_bfd, input_section, | |
4139 | rel->r_offset))) | |
b34976b6 | 4140 | return FALSE; |
c434dee6 AJ |
4141 | } |
4142 | else | |
4143 | { | |
4144 | (*_bfd_error_handler) | |
bb95161d | 4145 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
d003868e | 4146 | input_bfd, input_section, |
c434dee6 | 4147 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 4148 | return FALSE; |
8da6118f KH |
4149 | } |
4150 | } | |
8d88c4ca | 4151 | } |
70256ad8 | 4152 | |
b34976b6 | 4153 | return TRUE; |
70256ad8 AJ |
4154 | } |
4155 | ||
4156 | /* Finish up dynamic symbol handling. We set the contents of various | |
4157 | dynamic sections here. */ | |
4158 | ||
b34976b6 | 4159 | static bfd_boolean |
351f65ca L |
4160 | elf_x86_64_finish_dynamic_symbol (bfd *output_bfd, |
4161 | struct bfd_link_info *info, | |
4162 | struct elf_link_hash_entry *h, | |
4163 | Elf_Internal_Sym *sym) | |
70256ad8 | 4164 | { |
351f65ca | 4165 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 | 4166 | |
351f65ca | 4167 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
4168 | if (htab == NULL) |
4169 | return FALSE; | |
70256ad8 AJ |
4170 | |
4171 | if (h->plt.offset != (bfd_vma) -1) | |
4172 | { | |
70256ad8 AJ |
4173 | bfd_vma plt_index; |
4174 | bfd_vma got_offset; | |
4175 | Elf_Internal_Rela rela; | |
947216bf | 4176 | bfd_byte *loc; |
cbe950e9 | 4177 | asection *plt, *gotplt, *relplt; |
351f65ca | 4178 | const struct elf_backend_data *bed; |
cbe950e9 L |
4179 | |
4180 | /* When building a static executable, use .iplt, .igot.plt and | |
4181 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 4182 | if (htab->elf.splt != NULL) |
cbe950e9 | 4183 | { |
6de2ae4a L |
4184 | plt = htab->elf.splt; |
4185 | gotplt = htab->elf.sgotplt; | |
4186 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
4187 | } |
4188 | else | |
4189 | { | |
6de2ae4a L |
4190 | plt = htab->elf.iplt; |
4191 | gotplt = htab->elf.igotplt; | |
4192 | relplt = htab->elf.irelplt; | |
cbe950e9 | 4193 | } |
70256ad8 AJ |
4194 | |
4195 | /* This symbol has an entry in the procedure linkage table. Set | |
407443a3 | 4196 | it up. */ |
cbe950e9 L |
4197 | if ((h->dynindx == -1 |
4198 | && !((h->forced_local || info->executable) | |
4199 | && h->def_regular | |
4200 | && h->type == STT_GNU_IFUNC)) | |
4201 | || plt == NULL | |
4202 | || gotplt == NULL | |
4203 | || relplt == NULL) | |
f6df62c8 | 4204 | return FALSE; |
70256ad8 AJ |
4205 | |
4206 | /* Get the index in the procedure linkage table which | |
4207 | corresponds to this symbol. This is the index of this symbol | |
4208 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 4209 | first entry in the procedure linkage table is reserved. |
6bbec505 | 4210 | |
cbe950e9 | 4211 | Get the offset into the .got table of the entry that |
407443a3 | 4212 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE |
cbe950e9 L |
4213 | bytes. The first three are reserved for the dynamic linker. |
4214 | ||
4215 | For static executables, we don't reserve anything. */ | |
4216 | ||
6de2ae4a | 4217 | if (plt == htab->elf.splt) |
cbe950e9 | 4218 | { |
e1f98742 L |
4219 | got_offset = h->plt.offset / PLT_ENTRY_SIZE - 1; |
4220 | got_offset = (got_offset + 3) * GOT_ENTRY_SIZE; | |
cbe950e9 L |
4221 | } |
4222 | else | |
4223 | { | |
e1f98742 L |
4224 | got_offset = h->plt.offset / PLT_ENTRY_SIZE; |
4225 | got_offset = got_offset * GOT_ENTRY_SIZE; | |
cbe950e9 | 4226 | } |
70256ad8 AJ |
4227 | |
4228 | /* Fill in the entry in the procedure linkage table. */ | |
351f65ca | 4229 | memcpy (plt->contents + h->plt.offset, elf_x86_64_plt_entry, |
70256ad8 AJ |
4230 | PLT_ENTRY_SIZE); |
4231 | ||
4232 | /* Insert the relocation positions of the plt section. The magic | |
4233 | numbers at the end of the statements are the positions of the | |
4234 | relocations in the plt section. */ | |
653165cc AJ |
4235 | /* Put offset for jmp *name@GOTPCREL(%rip), since the |
4236 | instruction uses 6 bytes, subtract this value. */ | |
4237 | bfd_put_32 (output_bfd, | |
cbe950e9 L |
4238 | (gotplt->output_section->vma |
4239 | + gotplt->output_offset | |
653165cc | 4240 | + got_offset |
cbe950e9 L |
4241 | - plt->output_section->vma |
4242 | - plt->output_offset | |
653165cc AJ |
4243 | - h->plt.offset |
4244 | - 6), | |
cbe950e9 L |
4245 | plt->contents + h->plt.offset + 2); |
4246 | ||
653165cc AJ |
4247 | /* Fill in the entry in the global offset table, initially this |
4248 | points to the pushq instruction in the PLT which is at offset 6. */ | |
cbe950e9 L |
4249 | bfd_put_64 (output_bfd, (plt->output_section->vma |
4250 | + plt->output_offset | |
70256ad8 | 4251 | + h->plt.offset + 6), |
cbe950e9 | 4252 | gotplt->contents + got_offset); |
70256ad8 AJ |
4253 | |
4254 | /* Fill in the entry in the .rela.plt section. */ | |
cbe950e9 L |
4255 | rela.r_offset = (gotplt->output_section->vma |
4256 | + gotplt->output_offset | |
70256ad8 | 4257 | + got_offset); |
cbe950e9 L |
4258 | if (h->dynindx == -1 |
4259 | || ((info->executable | |
4260 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
4261 | && h->def_regular | |
4262 | && h->type == STT_GNU_IFUNC)) | |
4263 | { | |
4264 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
4265 | R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */ | |
351f65ca | 4266 | rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE); |
cbe950e9 L |
4267 | rela.r_addend = (h->root.u.def.value |
4268 | + h->root.u.def.section->output_section->vma | |
4269 | + h->root.u.def.section->output_offset); | |
e1f98742 L |
4270 | /* R_X86_64_IRELATIVE comes last. */ |
4271 | plt_index = htab->next_irelative_index--; | |
cbe950e9 L |
4272 | } |
4273 | else | |
4274 | { | |
351f65ca | 4275 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT); |
cbe950e9 | 4276 | rela.r_addend = 0; |
e1f98742 L |
4277 | plt_index = htab->next_jump_slot_index++; |
4278 | } | |
4279 | ||
4280 | /* Don't fill PLT entry for static executables. */ | |
4281 | if (plt == htab->elf.splt) | |
4282 | { | |
4283 | /* Put relocation index. */ | |
4284 | bfd_put_32 (output_bfd, plt_index, | |
4285 | plt->contents + h->plt.offset + 7); | |
4286 | /* Put offset for jmp .PLT0. */ | |
4287 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), | |
4288 | plt->contents + h->plt.offset + 12); | |
cbe950e9 | 4289 | } |
351f65ca L |
4290 | |
4291 | bed = get_elf_backend_data (output_bfd); | |
4292 | loc = relplt->contents + plt_index * bed->s->sizeof_rela; | |
82e96e07 | 4293 | bed->s->swap_reloca_out (output_bfd, &rela, loc); |
70256ad8 | 4294 | |
f5385ebf | 4295 | if (!h->def_regular) |
70256ad8 AJ |
4296 | { |
4297 | /* Mark the symbol as undefined, rather than as defined in | |
47a9f7b3 JJ |
4298 | the .plt section. Leave the value if there were any |
4299 | relocations where pointer equality matters (this is a clue | |
c434dee6 AJ |
4300 | for the dynamic linker, to make function pointer |
4301 | comparisons work between an application and shared | |
47a9f7b3 JJ |
4302 | library), otherwise set it to zero. If a function is only |
4303 | called from a binary, there is no need to slow down | |
4304 | shared libraries because of that. */ | |
70256ad8 | 4305 | sym->st_shndx = SHN_UNDEF; |
f5385ebf | 4306 | if (!h->pointer_equality_needed) |
47a9f7b3 | 4307 | sym->st_value = 0; |
70256ad8 AJ |
4308 | } |
4309 | } | |
4310 | ||
bffbf940 | 4311 | if (h->got.offset != (bfd_vma) -1 |
351f65ca L |
4312 | && ! GOT_TLS_GD_ANY_P (elf_x86_64_hash_entry (h)->tls_type) |
4313 | && elf_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE) | |
053579d7 | 4314 | { |
053579d7 AJ |
4315 | Elf_Internal_Rela rela; |
4316 | ||
4317 | /* This symbol has an entry in the global offset table. Set it | |
bffbf940 | 4318 | up. */ |
6de2ae4a | 4319 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
c434dee6 | 4320 | abort (); |
053579d7 | 4321 | |
6de2ae4a L |
4322 | rela.r_offset = (htab->elf.sgot->output_section->vma |
4323 | + htab->elf.sgot->output_offset | |
dc810e39 | 4324 | + (h->got.offset &~ (bfd_vma) 1)); |
053579d7 AJ |
4325 | |
4326 | /* If this is a static link, or it is a -Bsymbolic link and the | |
4327 | symbol is defined locally or was forced to be local because | |
4328 | of a version file, we just want to emit a RELATIVE reloc. | |
4329 | The entry in the global offset table will already have been | |
4330 | initialized in the relocate_section function. */ | |
710ab287 | 4331 | if (h->def_regular |
0018b0a3 L |
4332 | && h->type == STT_GNU_IFUNC) |
4333 | { | |
710ab287 L |
4334 | if (info->shared) |
4335 | { | |
4336 | /* Generate R_X86_64_GLOB_DAT. */ | |
4337 | goto do_glob_dat; | |
4338 | } | |
4339 | else | |
4340 | { | |
90d60710 L |
4341 | asection *plt; |
4342 | ||
710ab287 L |
4343 | if (!h->pointer_equality_needed) |
4344 | abort (); | |
4345 | ||
4346 | /* For non-shared object, we can't use .got.plt, which | |
4347 | contains the real function addres if we need pointer | |
4348 | equality. We load the GOT entry with the PLT entry. */ | |
90d60710 | 4349 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
710ab287 L |
4350 | bfd_put_64 (output_bfd, (plt->output_section->vma |
4351 | + plt->output_offset | |
4352 | + h->plt.offset), | |
6de2ae4a | 4353 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
4354 | return TRUE; |
4355 | } | |
0018b0a3 L |
4356 | } |
4357 | else if (info->shared | |
4358 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
053579d7 | 4359 | { |
41bed6dd L |
4360 | if (!h->def_regular) |
4361 | return FALSE; | |
cc78d0af | 4362 | BFD_ASSERT((h->got.offset & 1) != 0); |
351f65ca | 4363 | rela.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
053579d7 AJ |
4364 | rela.r_addend = (h->root.u.def.value |
4365 | + h->root.u.def.section->output_section->vma | |
4366 | + h->root.u.def.section->output_offset); | |
4367 | } | |
4368 | else | |
4369 | { | |
4370 | BFD_ASSERT((h->got.offset & 1) == 0); | |
710ab287 | 4371 | do_glob_dat: |
c434dee6 | 4372 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 4373 | htab->elf.sgot->contents + h->got.offset); |
351f65ca | 4374 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT); |
053579d7 AJ |
4375 | rela.r_addend = 0; |
4376 | } | |
4377 | ||
351f65ca | 4378 | elf_append_rela (output_bfd, htab->elf.srelgot, &rela); |
053579d7 AJ |
4379 | } |
4380 | ||
f5385ebf | 4381 | if (h->needs_copy) |
70256ad8 | 4382 | { |
70256ad8 AJ |
4383 | Elf_Internal_Rela rela; |
4384 | ||
4385 | /* This symbol needs a copy reloc. Set it up. */ | |
4386 | ||
c434dee6 AJ |
4387 | if (h->dynindx == -1 |
4388 | || (h->root.type != bfd_link_hash_defined | |
4389 | && h->root.type != bfd_link_hash_defweak) | |
4390 | || htab->srelbss == NULL) | |
4391 | abort (); | |
70256ad8 AJ |
4392 | |
4393 | rela.r_offset = (h->root.u.def.value | |
4394 | + h->root.u.def.section->output_section->vma | |
4395 | + h->root.u.def.section->output_offset); | |
351f65ca | 4396 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY); |
70256ad8 | 4397 | rela.r_addend = 0; |
351f65ca | 4398 | elf_append_rela (output_bfd, htab->srelbss, &rela); |
70256ad8 AJ |
4399 | } |
4400 | ||
c25bc9fc L |
4401 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may |
4402 | be NULL for local symbols. */ | |
4403 | if (sym != NULL | |
4404 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4405 | || h == htab->elf.hgot)) | |
70256ad8 AJ |
4406 | sym->st_shndx = SHN_ABS; |
4407 | ||
b34976b6 | 4408 | return TRUE; |
70256ad8 AJ |
4409 | } |
4410 | ||
c25bc9fc L |
4411 | /* Finish up local dynamic symbol handling. We set the contents of |
4412 | various dynamic sections here. */ | |
4413 | ||
4414 | static bfd_boolean | |
351f65ca | 4415 | elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf) |
c25bc9fc L |
4416 | { |
4417 | struct elf_link_hash_entry *h | |
4418 | = (struct elf_link_hash_entry *) *slot; | |
4419 | struct bfd_link_info *info | |
4420 | = (struct bfd_link_info *) inf; | |
4421 | ||
351f65ca | 4422 | return elf_x86_64_finish_dynamic_symbol (info->output_bfd, |
c25bc9fc L |
4423 | info, h, NULL); |
4424 | } | |
4425 | ||
c434dee6 AJ |
4426 | /* Used to decide how to sort relocs in an optimal manner for the |
4427 | dynamic linker, before writing them out. */ | |
4428 | ||
4429 | static enum elf_reloc_type_class | |
351f65ca | 4430 | elf_x86_64_reloc_type_class (const Elf_Internal_Rela *rela) |
c434dee6 | 4431 | { |
351f65ca | 4432 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
c434dee6 AJ |
4433 | { |
4434 | case R_X86_64_RELATIVE: | |
4435 | return reloc_class_relative; | |
4436 | case R_X86_64_JUMP_SLOT: | |
4437 | return reloc_class_plt; | |
4438 | case R_X86_64_COPY: | |
4439 | return reloc_class_copy; | |
4440 | default: | |
4441 | return reloc_class_normal; | |
4442 | } | |
4443 | } | |
4444 | ||
70256ad8 AJ |
4445 | /* Finish up the dynamic sections. */ |
4446 | ||
b34976b6 | 4447 | static bfd_boolean |
351f65ca L |
4448 | elf_x86_64_finish_dynamic_sections (bfd *output_bfd, |
4449 | struct bfd_link_info *info) | |
70256ad8 | 4450 | { |
351f65ca | 4451 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
4452 | bfd *dynobj; |
4453 | asection *sdyn; | |
70256ad8 | 4454 | |
351f65ca | 4455 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
4456 | if (htab == NULL) |
4457 | return FALSE; | |
4458 | ||
c434dee6 | 4459 | dynobj = htab->elf.dynobj; |
70256ad8 AJ |
4460 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
4461 | ||
c434dee6 | 4462 | if (htab->elf.dynamic_sections_created) |
70256ad8 | 4463 | { |
82e96e07 L |
4464 | bfd_byte *dyncon, *dynconend; |
4465 | const struct elf_backend_data *bed; | |
4466 | bfd_size_type sizeof_dyn; | |
70256ad8 | 4467 | |
6de2ae4a | 4468 | if (sdyn == NULL || htab->elf.sgot == NULL) |
c434dee6 | 4469 | abort (); |
70256ad8 | 4470 | |
82e96e07 L |
4471 | bed = get_elf_backend_data (dynobj); |
4472 | sizeof_dyn = bed->s->sizeof_dyn; | |
4473 | dyncon = sdyn->contents; | |
4474 | dynconend = sdyn->contents + sdyn->size; | |
4475 | for (; dyncon < dynconend; dyncon += sizeof_dyn) | |
70256ad8 AJ |
4476 | { |
4477 | Elf_Internal_Dyn dyn; | |
70256ad8 AJ |
4478 | asection *s; |
4479 | ||
82e96e07 | 4480 | (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn); |
70256ad8 AJ |
4481 | |
4482 | switch (dyn.d_tag) | |
4483 | { | |
4484 | default: | |
053579d7 | 4485 | continue; |
70256ad8 AJ |
4486 | |
4487 | case DT_PLTGOT: | |
6de2ae4a | 4488 | s = htab->elf.sgotplt; |
8c37241b | 4489 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
c434dee6 | 4490 | break; |
70256ad8 AJ |
4491 | |
4492 | case DT_JMPREL: | |
6de2ae4a | 4493 | dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma; |
c434dee6 | 4494 | break; |
70256ad8 | 4495 | |
c434dee6 | 4496 | case DT_PLTRELSZ: |
6de2ae4a | 4497 | s = htab->elf.srelplt->output_section; |
eea6121a | 4498 | dyn.d_un.d_val = s->size; |
70256ad8 AJ |
4499 | break; |
4500 | ||
4501 | case DT_RELASZ: | |
c434dee6 AJ |
4502 | /* The procedure linkage table relocs (DT_JMPREL) should |
4503 | not be included in the overall relocs (DT_RELA). | |
4504 | Therefore, we override the DT_RELASZ entry here to | |
4505 | make it not include the JMPREL relocs. Since the | |
4506 | linker script arranges for .rela.plt to follow all | |
4507 | other relocation sections, we don't have to worry | |
4508 | about changing the DT_RELA entry. */ | |
6de2ae4a | 4509 | if (htab->elf.srelplt != NULL) |
70256ad8 | 4510 | { |
6de2ae4a | 4511 | s = htab->elf.srelplt->output_section; |
eea6121a | 4512 | dyn.d_un.d_val -= s->size; |
70256ad8 AJ |
4513 | } |
4514 | break; | |
67a4f2b7 AO |
4515 | |
4516 | case DT_TLSDESC_PLT: | |
6de2ae4a | 4517 | s = htab->elf.splt; |
67a4f2b7 AO |
4518 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
4519 | + htab->tlsdesc_plt; | |
4520 | break; | |
4521 | ||
4522 | case DT_TLSDESC_GOT: | |
6de2ae4a | 4523 | s = htab->elf.sgot; |
67a4f2b7 AO |
4524 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
4525 | + htab->tlsdesc_got; | |
4526 | break; | |
70256ad8 | 4527 | } |
c434dee6 | 4528 | |
82e96e07 | 4529 | (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon); |
70256ad8 AJ |
4530 | } |
4531 | ||
c434dee6 | 4532 | /* Fill in the special first entry in the procedure linkage table. */ |
6de2ae4a | 4533 | if (htab->elf.splt && htab->elf.splt->size > 0) |
70256ad8 | 4534 | { |
653165cc | 4535 | /* Fill in the first entry in the procedure linkage table. */ |
351f65ca | 4536 | memcpy (htab->elf.splt->contents, elf_x86_64_plt0_entry, |
c434dee6 | 4537 | PLT_ENTRY_SIZE); |
653165cc AJ |
4538 | /* Add offset for pushq GOT+8(%rip), since the instruction |
4539 | uses 6 bytes subtract this value. */ | |
4540 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4541 | (htab->elf.sgotplt->output_section->vma |
4542 | + htab->elf.sgotplt->output_offset | |
653165cc | 4543 | + 8 |
6de2ae4a L |
4544 | - htab->elf.splt->output_section->vma |
4545 | - htab->elf.splt->output_offset | |
653165cc | 4546 | - 6), |
6de2ae4a | 4547 | htab->elf.splt->contents + 2); |
653165cc AJ |
4548 | /* Add offset for jmp *GOT+16(%rip). The 12 is the offset to |
4549 | the end of the instruction. */ | |
4550 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4551 | (htab->elf.sgotplt->output_section->vma |
4552 | + htab->elf.sgotplt->output_offset | |
653165cc | 4553 | + 16 |
6de2ae4a L |
4554 | - htab->elf.splt->output_section->vma |
4555 | - htab->elf.splt->output_offset | |
653165cc | 4556 | - 12), |
6de2ae4a | 4557 | htab->elf.splt->contents + 8); |
653165cc | 4558 | |
6de2ae4a | 4559 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize = |
c434dee6 | 4560 | PLT_ENTRY_SIZE; |
67a4f2b7 AO |
4561 | |
4562 | if (htab->tlsdesc_plt) | |
4563 | { | |
4564 | bfd_put_64 (output_bfd, (bfd_vma) 0, | |
6de2ae4a | 4565 | htab->elf.sgot->contents + htab->tlsdesc_got); |
67a4f2b7 | 4566 | |
6de2ae4a | 4567 | memcpy (htab->elf.splt->contents + htab->tlsdesc_plt, |
351f65ca | 4568 | elf_x86_64_plt0_entry, |
67a4f2b7 AO |
4569 | PLT_ENTRY_SIZE); |
4570 | ||
4571 | /* Add offset for pushq GOT+8(%rip), since the | |
4572 | instruction uses 6 bytes subtract this value. */ | |
4573 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4574 | (htab->elf.sgotplt->output_section->vma |
4575 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 | 4576 | + 8 |
6de2ae4a L |
4577 | - htab->elf.splt->output_section->vma |
4578 | - htab->elf.splt->output_offset | |
67a4f2b7 AO |
4579 | - htab->tlsdesc_plt |
4580 | - 6), | |
6de2ae4a | 4581 | htab->elf.splt->contents + htab->tlsdesc_plt + 2); |
67a4f2b7 AO |
4582 | /* Add offset for jmp *GOT+TDG(%rip), where TGD stands for |
4583 | htab->tlsdesc_got. The 12 is the offset to the end of | |
4584 | the instruction. */ | |
4585 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4586 | (htab->elf.sgot->output_section->vma |
4587 | + htab->elf.sgot->output_offset | |
67a4f2b7 | 4588 | + htab->tlsdesc_got |
6de2ae4a L |
4589 | - htab->elf.splt->output_section->vma |
4590 | - htab->elf.splt->output_offset | |
67a4f2b7 AO |
4591 | - htab->tlsdesc_plt |
4592 | - 12), | |
6de2ae4a | 4593 | htab->elf.splt->contents + htab->tlsdesc_plt + 8); |
67a4f2b7 | 4594 | } |
70256ad8 | 4595 | } |
70256ad8 AJ |
4596 | } |
4597 | ||
6de2ae4a | 4598 | if (htab->elf.sgotplt) |
70256ad8 | 4599 | { |
56d4289c L |
4600 | if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) |
4601 | { | |
4602 | (*_bfd_error_handler) | |
4603 | (_("discarded output section: `%A'"), htab->elf.sgotplt); | |
4604 | return FALSE; | |
4605 | } | |
4606 | ||
c434dee6 | 4607 | /* Fill in the first three entries in the global offset table. */ |
6de2ae4a | 4608 | if (htab->elf.sgotplt->size > 0) |
c434dee6 AJ |
4609 | { |
4610 | /* Set the first entry in the global offset table to the address of | |
4611 | the dynamic section. */ | |
4612 | if (sdyn == NULL) | |
6de2ae4a | 4613 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents); |
c434dee6 AJ |
4614 | else |
4615 | bfd_put_64 (output_bfd, | |
4616 | sdyn->output_section->vma + sdyn->output_offset, | |
6de2ae4a | 4617 | htab->elf.sgotplt->contents); |
c434dee6 | 4618 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
6de2ae4a L |
4619 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE); |
4620 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2); | |
c434dee6 | 4621 | } |
70256ad8 | 4622 | |
6de2ae4a | 4623 | elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = |
c434dee6 AJ |
4624 | GOT_ENTRY_SIZE; |
4625 | } | |
70256ad8 | 4626 | |
e41b3a13 JJ |
4627 | /* Adjust .eh_frame for .plt section. */ |
4628 | if (htab->plt_eh_frame != NULL) | |
4629 | { | |
4630 | if (htab->elf.splt != NULL | |
4631 | && htab->elf.splt->size != 0 | |
4632 | && (htab->elf.splt->flags & SEC_EXCLUDE) == 0 | |
4633 | && htab->elf.splt->output_section != NULL | |
4634 | && htab->plt_eh_frame->output_section != NULL) | |
4635 | { | |
4636 | bfd_vma plt_start = htab->elf.splt->output_section->vma; | |
4637 | bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma | |
4638 | + htab->plt_eh_frame->output_offset | |
4639 | + PLT_FDE_START_OFFSET; | |
4640 | bfd_put_signed_32 (dynobj, plt_start - eh_frame_start, | |
4641 | htab->plt_eh_frame->contents | |
4642 | + PLT_FDE_START_OFFSET); | |
4643 | } | |
4644 | if (htab->plt_eh_frame->sec_info_type | |
4645 | == ELF_INFO_TYPE_EH_FRAME) | |
4646 | { | |
4647 | if (! _bfd_elf_write_section_eh_frame (output_bfd, info, | |
4648 | htab->plt_eh_frame, | |
4649 | htab->plt_eh_frame->contents)) | |
4650 | return FALSE; | |
4651 | } | |
4652 | } | |
4653 | ||
6de2ae4a L |
4654 | if (htab->elf.sgot && htab->elf.sgot->size > 0) |
4655 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize | |
8c37241b JJ |
4656 | = GOT_ENTRY_SIZE; |
4657 | ||
c25bc9fc L |
4658 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
4659 | htab_traverse (htab->loc_hash_table, | |
351f65ca | 4660 | elf_x86_64_finish_local_dynamic_symbol, |
c25bc9fc L |
4661 | info); |
4662 | ||
b34976b6 | 4663 | return TRUE; |
8d88c4ca NC |
4664 | } |
4665 | ||
4c45e5c9 JJ |
4666 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4667 | or (bfd_vma) -1 if it should not be included. */ | |
4668 | ||
4669 | static bfd_vma | |
351f65ca L |
4670 | elf_x86_64_plt_sym_val (bfd_vma i, const asection *plt, |
4671 | const arelent *rel ATTRIBUTE_UNUSED) | |
4c45e5c9 JJ |
4672 | { |
4673 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
4674 | } | |
8df9fc9d | 4675 | |
d2b2c203 DJ |
4676 | /* Handle an x86-64 specific section when reading an object file. This |
4677 | is called when elfcode.h finds a section with an unknown type. */ | |
4678 | ||
4679 | static bfd_boolean | |
351f65ca | 4680 | elf_x86_64_section_from_shdr (bfd *abfd, |
6dc132d9 L |
4681 | Elf_Internal_Shdr *hdr, |
4682 | const char *name, | |
4683 | int shindex) | |
d2b2c203 DJ |
4684 | { |
4685 | if (hdr->sh_type != SHT_X86_64_UNWIND) | |
4686 | return FALSE; | |
4687 | ||
6dc132d9 | 4688 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
d2b2c203 DJ |
4689 | return FALSE; |
4690 | ||
4691 | return TRUE; | |
4692 | } | |
4693 | ||
3b22753a L |
4694 | /* Hook called by the linker routine which adds symbols from an object |
4695 | file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead | |
4696 | of .bss. */ | |
4697 | ||
4698 | static bfd_boolean | |
351f65ca L |
4699 | elf_x86_64_add_symbol_hook (bfd *abfd, |
4700 | struct bfd_link_info *info, | |
4701 | Elf_Internal_Sym *sym, | |
4702 | const char **namep ATTRIBUTE_UNUSED, | |
4703 | flagword *flagsp ATTRIBUTE_UNUSED, | |
4704 | asection **secp, | |
4705 | bfd_vma *valp) | |
3b22753a L |
4706 | { |
4707 | asection *lcomm; | |
4708 | ||
4709 | switch (sym->st_shndx) | |
4710 | { | |
4711 | case SHN_X86_64_LCOMMON: | |
4712 | lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON"); | |
4713 | if (lcomm == NULL) | |
4714 | { | |
4715 | lcomm = bfd_make_section_with_flags (abfd, | |
4716 | "LARGE_COMMON", | |
4717 | (SEC_ALLOC | |
4718 | | SEC_IS_COMMON | |
4719 | | SEC_LINKER_CREATED)); | |
4720 | if (lcomm == NULL) | |
4721 | return FALSE; | |
4722 | elf_section_flags (lcomm) |= SHF_X86_64_LARGE; | |
4723 | } | |
4724 | *secp = lcomm; | |
4725 | *valp = sym->st_size; | |
c35bdf6e | 4726 | return TRUE; |
3b22753a | 4727 | } |
d8045f23 | 4728 | |
c16153ae | 4729 | if ((abfd->flags & DYNAMIC) == 0 |
f64b2e8d NC |
4730 | && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
4731 | || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)) | |
4732 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
d8045f23 | 4733 | |
3b22753a L |
4734 | return TRUE; |
4735 | } | |
4736 | ||
4737 | ||
4738 | /* Given a BFD section, try to locate the corresponding ELF section | |
4739 | index. */ | |
4740 | ||
4741 | static bfd_boolean | |
351f65ca L |
4742 | elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
4743 | asection *sec, int *index_return) | |
3b22753a L |
4744 | { |
4745 | if (sec == &_bfd_elf_large_com_section) | |
4746 | { | |
91d6fa6a | 4747 | *index_return = SHN_X86_64_LCOMMON; |
3b22753a L |
4748 | return TRUE; |
4749 | } | |
4750 | return FALSE; | |
4751 | } | |
4752 | ||
4753 | /* Process a symbol. */ | |
4754 | ||
4755 | static void | |
351f65ca L |
4756 | elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, |
4757 | asymbol *asym) | |
3b22753a L |
4758 | { |
4759 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
4760 | ||
4761 | switch (elfsym->internal_elf_sym.st_shndx) | |
4762 | { | |
4763 | case SHN_X86_64_LCOMMON: | |
4764 | asym->section = &_bfd_elf_large_com_section; | |
4765 | asym->value = elfsym->internal_elf_sym.st_size; | |
4766 | /* Common symbol doesn't set BSF_GLOBAL. */ | |
4767 | asym->flags &= ~BSF_GLOBAL; | |
4768 | break; | |
4769 | } | |
4770 | } | |
4771 | ||
4772 | static bfd_boolean | |
351f65ca | 4773 | elf_x86_64_common_definition (Elf_Internal_Sym *sym) |
3b22753a L |
4774 | { |
4775 | return (sym->st_shndx == SHN_COMMON | |
4776 | || sym->st_shndx == SHN_X86_64_LCOMMON); | |
4777 | } | |
4778 | ||
4779 | static unsigned int | |
351f65ca | 4780 | elf_x86_64_common_section_index (asection *sec) |
3b22753a L |
4781 | { |
4782 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
4783 | return SHN_COMMON; | |
4784 | else | |
4785 | return SHN_X86_64_LCOMMON; | |
4786 | } | |
4787 | ||
4788 | static asection * | |
351f65ca | 4789 | elf_x86_64_common_section (asection *sec) |
3b22753a L |
4790 | { |
4791 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
4792 | return bfd_com_section_ptr; | |
4793 | else | |
4794 | return &_bfd_elf_large_com_section; | |
4795 | } | |
4796 | ||
4797 | static bfd_boolean | |
351f65ca L |
4798 | elf_x86_64_merge_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4799 | struct elf_link_hash_entry **sym_hash ATTRIBUTE_UNUSED, | |
4800 | struct elf_link_hash_entry *h, | |
4801 | Elf_Internal_Sym *sym, | |
4802 | asection **psec, | |
4803 | bfd_vma *pvalue ATTRIBUTE_UNUSED, | |
4804 | unsigned int *pold_alignment ATTRIBUTE_UNUSED, | |
4805 | bfd_boolean *skip ATTRIBUTE_UNUSED, | |
4806 | bfd_boolean *override ATTRIBUTE_UNUSED, | |
4807 | bfd_boolean *type_change_ok ATTRIBUTE_UNUSED, | |
4808 | bfd_boolean *size_change_ok ATTRIBUTE_UNUSED, | |
71e7aa7d L |
4809 | bfd_boolean *newdyn ATTRIBUTE_UNUSED, |
4810 | bfd_boolean *newdef, | |
351f65ca L |
4811 | bfd_boolean *newdyncommon ATTRIBUTE_UNUSED, |
4812 | bfd_boolean *newweak ATTRIBUTE_UNUSED, | |
4813 | bfd *abfd ATTRIBUTE_UNUSED, | |
4814 | asection **sec, | |
71e7aa7d L |
4815 | bfd_boolean *olddyn ATTRIBUTE_UNUSED, |
4816 | bfd_boolean *olddef, | |
351f65ca L |
4817 | bfd_boolean *olddyncommon ATTRIBUTE_UNUSED, |
4818 | bfd_boolean *oldweak ATTRIBUTE_UNUSED, | |
4819 | bfd *oldbfd, | |
4820 | asection **oldsec) | |
3b22753a L |
4821 | { |
4822 | /* A normal common symbol and a large common symbol result in a | |
00492999 L |
4823 | normal common symbol. We turn the large common symbol into a |
4824 | normal one. */ | |
71e7aa7d | 4825 | if (!*olddef |
3b22753a | 4826 | && h->root.type == bfd_link_hash_common |
71e7aa7d | 4827 | && !*newdef |
3b22753a | 4828 | && bfd_is_com_section (*sec) |
00492999 | 4829 | && *oldsec != *sec) |
3b22753a | 4830 | { |
00492999 L |
4831 | if (sym->st_shndx == SHN_COMMON |
4832 | && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) != 0) | |
4833 | { | |
4834 | h->root.u.c.p->section | |
4835 | = bfd_make_section_old_way (oldbfd, "COMMON"); | |
4836 | h->root.u.c.p->section->flags = SEC_ALLOC; | |
4837 | } | |
4838 | else if (sym->st_shndx == SHN_X86_64_LCOMMON | |
4839 | && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) == 0) | |
9a2e389a | 4840 | *psec = *sec = bfd_com_section_ptr; |
3b22753a L |
4841 | } |
4842 | ||
4843 | return TRUE; | |
4844 | } | |
4845 | ||
4846 | static int | |
351f65ca L |
4847 | elf_x86_64_additional_program_headers (bfd *abfd, |
4848 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
3b22753a L |
4849 | { |
4850 | asection *s; | |
9a2e389a | 4851 | int count = 0; |
3b22753a L |
4852 | |
4853 | /* Check to see if we need a large readonly segment. */ | |
4854 | s = bfd_get_section_by_name (abfd, ".lrodata"); | |
4855 | if (s && (s->flags & SEC_LOAD)) | |
4856 | count++; | |
4857 | ||
4858 | /* Check to see if we need a large data segment. Since .lbss sections | |
4859 | is placed right after the .bss section, there should be no need for | |
4860 | a large data segment just because of .lbss. */ | |
4861 | s = bfd_get_section_by_name (abfd, ".ldata"); | |
4862 | if (s && (s->flags & SEC_LOAD)) | |
4863 | count++; | |
4864 | ||
4865 | return count; | |
4866 | } | |
4867 | ||
fdc90cb4 JJ |
4868 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
4869 | ||
4870 | static bfd_boolean | |
351f65ca | 4871 | elf_x86_64_hash_symbol (struct elf_link_hash_entry *h) |
fdc90cb4 JJ |
4872 | { |
4873 | if (h->plt.offset != (bfd_vma) -1 | |
4874 | && !h->def_regular | |
4875 | && !h->pointer_equality_needed) | |
4876 | return FALSE; | |
4877 | ||
4878 | return _bfd_elf_hash_symbol (h); | |
4879 | } | |
4880 | ||
c543bf9a L |
4881 | /* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */ |
4882 | ||
4883 | static bfd_boolean | |
4884 | elf_x86_64_relocs_compatible (const bfd_target *input, | |
4885 | const bfd_target *output) | |
4886 | { | |
4887 | return ((xvec_get_elf_backend_data (input)->s->elfclass | |
4888 | == xvec_get_elf_backend_data (output)->s->elfclass) | |
4889 | && _bfd_elf_relocs_compatible (input, output)); | |
4890 | } | |
4891 | ||
9a2e389a | 4892 | static const struct bfd_elf_special_section |
351f65ca | 4893 | elf_x86_64_special_sections[]= |
3b22753a | 4894 | { |
0112cd26 NC |
4895 | { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, |
4896 | { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
4897 | { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE}, | |
4898 | { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
4899 | { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
4900 | { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
4901 | { NULL, 0, 0, 0, 0 } | |
3b22753a L |
4902 | }; |
4903 | ||
70256ad8 AJ |
4904 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_vec |
4905 | #define TARGET_LITTLE_NAME "elf64-x86-64" | |
4906 | #define ELF_ARCH bfd_arch_i386 | |
ae95ffa6 | 4907 | #define ELF_TARGET_ID X86_64_ELF_DATA |
70256ad8 | 4908 | #define ELF_MACHINE_CODE EM_X86_64 |
f7661549 | 4909 | #define ELF_MAXPAGESIZE 0x200000 |
2043964e | 4910 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 4911 | #define ELF_COMMONPAGESIZE 0x1000 |
70256ad8 AJ |
4912 | |
4913 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4914 | #define elf_backend_can_refcount 1 |
70256ad8 AJ |
4915 | #define elf_backend_want_got_plt 1 |
4916 | #define elf_backend_plt_readonly 1 | |
4917 | #define elf_backend_want_plt_sym 0 | |
4918 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE*3) | |
b491616a | 4919 | #define elf_backend_rela_normal 1 |
e41b3a13 | 4920 | #define elf_backend_plt_alignment 4 |
70256ad8 | 4921 | |
351f65ca | 4922 | #define elf_info_to_howto elf_x86_64_info_to_howto |
70256ad8 | 4923 | |
70256ad8 | 4924 | #define bfd_elf64_bfd_link_hash_table_create \ |
351f65ca | 4925 | elf_x86_64_link_hash_table_create |
c25bc9fc | 4926 | #define bfd_elf64_bfd_link_hash_table_free \ |
351f65ca L |
4927 | elf_x86_64_link_hash_table_free |
4928 | #define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup | |
157090f7 | 4929 | #define bfd_elf64_bfd_reloc_name_lookup \ |
351f65ca | 4930 | elf_x86_64_reloc_name_lookup |
70256ad8 | 4931 | |
351f65ca | 4932 | #define elf_backend_adjust_dynamic_symbol elf_x86_64_adjust_dynamic_symbol |
c543bf9a | 4933 | #define elf_backend_relocs_compatible elf_x86_64_relocs_compatible |
351f65ca L |
4934 | #define elf_backend_check_relocs elf_x86_64_check_relocs |
4935 | #define elf_backend_copy_indirect_symbol elf_x86_64_copy_indirect_symbol | |
4936 | #define elf_backend_create_dynamic_sections elf_x86_64_create_dynamic_sections | |
4937 | #define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections | |
4938 | #define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol | |
4939 | #define elf_backend_gc_mark_hook elf_x86_64_gc_mark_hook | |
4940 | #define elf_backend_gc_sweep_hook elf_x86_64_gc_sweep_hook | |
4941 | #define elf_backend_grok_prstatus elf_x86_64_grok_prstatus | |
4942 | #define elf_backend_grok_psinfo elf_x86_64_grok_psinfo | |
8fd79e71 L |
4943 | #ifdef CORE_HEADER |
4944 | #define elf_backend_write_core_note elf_x86_64_write_core_note | |
4945 | #endif | |
351f65ca L |
4946 | #define elf_backend_reloc_type_class elf_x86_64_reloc_type_class |
4947 | #define elf_backend_relocate_section elf_x86_64_relocate_section | |
4948 | #define elf_backend_size_dynamic_sections elf_x86_64_size_dynamic_sections | |
4949 | #define elf_backend_always_size_sections elf_x86_64_always_size_sections | |
74541ad4 | 4950 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
351f65ca | 4951 | #define elf_backend_plt_sym_val elf_x86_64_plt_sym_val |
407443a3 | 4952 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
351f65ca | 4953 | #define bfd_elf64_mkobject elf_x86_64_mkobject |
8d88c4ca | 4954 | |
d2b2c203 | 4955 | #define elf_backend_section_from_shdr \ |
351f65ca | 4956 | elf_x86_64_section_from_shdr |
d2b2c203 | 4957 | |
3b22753a | 4958 | #define elf_backend_section_from_bfd_section \ |
351f65ca | 4959 | elf_x86_64_elf_section_from_bfd_section |
3b22753a | 4960 | #define elf_backend_add_symbol_hook \ |
351f65ca | 4961 | elf_x86_64_add_symbol_hook |
3b22753a | 4962 | #define elf_backend_symbol_processing \ |
351f65ca | 4963 | elf_x86_64_symbol_processing |
3b22753a | 4964 | #define elf_backend_common_section_index \ |
351f65ca | 4965 | elf_x86_64_common_section_index |
3b22753a | 4966 | #define elf_backend_common_section \ |
351f65ca | 4967 | elf_x86_64_common_section |
3b22753a | 4968 | #define elf_backend_common_definition \ |
351f65ca | 4969 | elf_x86_64_common_definition |
3b22753a | 4970 | #define elf_backend_merge_symbol \ |
351f65ca | 4971 | elf_x86_64_merge_symbol |
3b22753a | 4972 | #define elf_backend_special_sections \ |
351f65ca | 4973 | elf_x86_64_special_sections |
3b22753a | 4974 | #define elf_backend_additional_program_headers \ |
351f65ca | 4975 | elf_x86_64_additional_program_headers |
fdc90cb4 | 4976 | #define elf_backend_hash_symbol \ |
351f65ca | 4977 | elf_x86_64_hash_symbol |
3b22753a | 4978 | |
d8045f23 NC |
4979 | #define elf_backend_post_process_headers _bfd_elf_set_osabi |
4980 | ||
8d88c4ca | 4981 | #include "elf64-target.h" |
9d7cbccd NC |
4982 | |
4983 | /* FreeBSD support. */ | |
4984 | ||
4985 | #undef TARGET_LITTLE_SYM | |
4986 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_freebsd_vec | |
4987 | #undef TARGET_LITTLE_NAME | |
4988 | #define TARGET_LITTLE_NAME "elf64-x86-64-freebsd" | |
4989 | ||
d1036acb L |
4990 | #undef ELF_OSABI |
4991 | #define ELF_OSABI ELFOSABI_FREEBSD | |
9d7cbccd | 4992 | |
9d7cbccd NC |
4993 | #undef elf64_bed |
4994 | #define elf64_bed elf64_x86_64_fbsd_bed | |
4995 | ||
4996 | #include "elf64-target.h" | |
8a9036a4 | 4997 | |
a6cc6b3b RO |
4998 | /* Solaris 2 support. */ |
4999 | ||
5000 | #undef TARGET_LITTLE_SYM | |
5001 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_sol2_vec | |
5002 | #undef TARGET_LITTLE_NAME | |
5003 | #define TARGET_LITTLE_NAME "elf64-x86-64-sol2" | |
5004 | ||
5005 | /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE | |
5006 | objects won't be recognized. */ | |
5007 | #undef ELF_OSABI | |
5008 | ||
5009 | #undef elf64_bed | |
5010 | #define elf64_bed elf64_x86_64_sol2_bed | |
5011 | ||
7dc98aea RO |
5012 | /* The 64-bit static TLS arena size is rounded to the nearest 16-byte |
5013 | boundary. */ | |
5014 | #undef elf_backend_static_tls_alignment | |
5015 | #define elf_backend_static_tls_alignment 16 | |
5016 | ||
a6cc6b3b RO |
5017 | /* The Solaris 2 ABI requires a plt symbol on all platforms. |
5018 | ||
5019 | Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output | |
5020 | File, p.63. */ | |
5021 | #undef elf_backend_want_plt_sym | |
5022 | #define elf_backend_want_plt_sym 1 | |
5023 | ||
5024 | #include "elf64-target.h" | |
5025 | ||
8a9036a4 L |
5026 | /* Intel L1OM support. */ |
5027 | ||
5028 | static bfd_boolean | |
5029 | elf64_l1om_elf_object_p (bfd *abfd) | |
5030 | { | |
5031 | /* Set the right machine number for an L1OM elf64 file. */ | |
5032 | bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om); | |
5033 | return TRUE; | |
5034 | } | |
5035 | ||
5036 | #undef TARGET_LITTLE_SYM | |
5037 | #define TARGET_LITTLE_SYM bfd_elf64_l1om_vec | |
5038 | #undef TARGET_LITTLE_NAME | |
5039 | #define TARGET_LITTLE_NAME "elf64-l1om" | |
5040 | #undef ELF_ARCH | |
5041 | #define ELF_ARCH bfd_arch_l1om | |
5042 | ||
5043 | #undef ELF_MACHINE_CODE | |
5044 | #define ELF_MACHINE_CODE EM_L1OM | |
5045 | ||
5046 | #undef ELF_OSABI | |
5047 | ||
5048 | #undef elf64_bed | |
5049 | #define elf64_bed elf64_l1om_bed | |
5050 | ||
5051 | #undef elf_backend_object_p | |
5052 | #define elf_backend_object_p elf64_l1om_elf_object_p | |
5053 | ||
7dc98aea | 5054 | #undef elf_backend_static_tls_alignment |
8a9036a4 | 5055 | |
1a0c107f L |
5056 | #undef elf_backend_want_plt_sym |
5057 | #define elf_backend_want_plt_sym 0 | |
5058 | ||
8a9036a4 L |
5059 | #include "elf64-target.h" |
5060 | ||
5061 | /* FreeBSD L1OM support. */ | |
5062 | ||
5063 | #undef TARGET_LITTLE_SYM | |
5064 | #define TARGET_LITTLE_SYM bfd_elf64_l1om_freebsd_vec | |
5065 | #undef TARGET_LITTLE_NAME | |
5066 | #define TARGET_LITTLE_NAME "elf64-l1om-freebsd" | |
5067 | ||
5068 | #undef ELF_OSABI | |
5069 | #define ELF_OSABI ELFOSABI_FREEBSD | |
5070 | ||
5071 | #undef elf64_bed | |
5072 | #define elf64_bed elf64_l1om_fbsd_bed | |
5073 | ||
8a9036a4 | 5074 | #include "elf64-target.h" |
351f65ca | 5075 | |
7a9068fe L |
5076 | /* Intel K1OM support. */ |
5077 | ||
5078 | static bfd_boolean | |
5079 | elf64_k1om_elf_object_p (bfd *abfd) | |
5080 | { | |
5081 | /* Set the right machine number for an K1OM elf64 file. */ | |
5082 | bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om); | |
5083 | return TRUE; | |
5084 | } | |
5085 | ||
5086 | #undef TARGET_LITTLE_SYM | |
5087 | #define TARGET_LITTLE_SYM bfd_elf64_k1om_vec | |
5088 | #undef TARGET_LITTLE_NAME | |
5089 | #define TARGET_LITTLE_NAME "elf64-k1om" | |
5090 | #undef ELF_ARCH | |
5091 | #define ELF_ARCH bfd_arch_k1om | |
5092 | ||
5093 | #undef ELF_MACHINE_CODE | |
5094 | #define ELF_MACHINE_CODE EM_K1OM | |
5095 | ||
5096 | #undef ELF_OSABI | |
5097 | ||
5098 | #undef elf64_bed | |
5099 | #define elf64_bed elf64_k1om_bed | |
5100 | ||
5101 | #undef elf_backend_object_p | |
5102 | #define elf_backend_object_p elf64_k1om_elf_object_p | |
5103 | ||
5104 | #undef elf_backend_static_tls_alignment | |
5105 | ||
5106 | #undef elf_backend_want_plt_sym | |
5107 | #define elf_backend_want_plt_sym 0 | |
5108 | ||
5109 | #include "elf64-target.h" | |
5110 | ||
5111 | /* FreeBSD K1OM support. */ | |
5112 | ||
5113 | #undef TARGET_LITTLE_SYM | |
5114 | #define TARGET_LITTLE_SYM bfd_elf64_k1om_freebsd_vec | |
5115 | #undef TARGET_LITTLE_NAME | |
5116 | #define TARGET_LITTLE_NAME "elf64-k1om-freebsd" | |
5117 | ||
5118 | #undef ELF_OSABI | |
5119 | #define ELF_OSABI ELFOSABI_FREEBSD | |
5120 | ||
5121 | #undef elf64_bed | |
5122 | #define elf64_bed elf64_k1om_fbsd_bed | |
5123 | ||
5124 | #include "elf64-target.h" | |
5125 | ||
351f65ca L |
5126 | /* 32bit x86-64 support. */ |
5127 | ||
5128 | static bfd_boolean | |
5129 | elf32_x86_64_elf_object_p (bfd *abfd) | |
5130 | { | |
5131 | /* Set the right machine number for an x86-64 elf32 file. */ | |
5132 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32); | |
5133 | return TRUE; | |
5134 | } | |
5135 | ||
5136 | #undef TARGET_LITTLE_SYM | |
5137 | #define TARGET_LITTLE_SYM bfd_elf32_x86_64_vec | |
5138 | #undef TARGET_LITTLE_NAME | |
5139 | #define TARGET_LITTLE_NAME "elf32-x86-64" | |
5140 | ||
5141 | #undef ELF_ARCH | |
5142 | #define ELF_ARCH bfd_arch_i386 | |
5143 | ||
5144 | #undef ELF_MACHINE_CODE | |
5145 | #define ELF_MACHINE_CODE EM_X86_64 | |
5146 | ||
5147 | #define bfd_elf32_bfd_link_hash_table_create \ | |
5148 | elf_x86_64_link_hash_table_create | |
5149 | #define bfd_elf32_bfd_link_hash_table_free \ | |
5150 | elf_x86_64_link_hash_table_free | |
5151 | #define bfd_elf32_bfd_reloc_type_lookup \ | |
5152 | elf_x86_64_reloc_type_lookup | |
5153 | #define bfd_elf32_bfd_reloc_name_lookup \ | |
5154 | elf_x86_64_reloc_name_lookup | |
5155 | #define bfd_elf32_mkobject \ | |
5156 | elf_x86_64_mkobject | |
5157 | ||
5158 | #undef ELF_OSABI | |
5159 | ||
351f65ca L |
5160 | #undef elf_backend_object_p |
5161 | #define elf_backend_object_p \ | |
5162 | elf32_x86_64_elf_object_p | |
5163 | ||
5164 | #undef elf_backend_bfd_from_remote_memory | |
5165 | #define elf_backend_bfd_from_remote_memory \ | |
5166 | _bfd_elf32_bfd_from_remote_memory | |
5167 | ||
5168 | #undef elf_backend_size_info | |
5169 | #define elf_backend_size_info \ | |
5170 | _bfd_elf32_size_info | |
5171 | ||
5172 | #include "elf32-target.h" |