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, |
3ce231f8 | 3 | 2010, 2011, 2012 |
9f973f28 | 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" | |
5a68afcf | 29 | #include "elf-nacl.h" |
142411ca | 30 | #include "bfd_stdint.h" |
c25bc9fc L |
31 | #include "objalloc.h" |
32 | #include "hashtab.h" | |
e41b3a13 | 33 | #include "dwarf2.h" |
d7921315 | 34 | #include "libiberty.h" |
8d88c4ca NC |
35 | |
36 | #include "elf/x86-64.h" | |
37 | ||
8fd79e71 L |
38 | #ifdef CORE_HEADER |
39 | #include <stdarg.h> | |
40 | #include CORE_HEADER | |
41 | #endif | |
42 | ||
8d88c4ca NC |
43 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ |
44 | #define MINUS_ONE (~ (bfd_vma) 0) | |
45 | ||
351f65ca L |
46 | /* Since both 32-bit and 64-bit x86-64 encode relocation type in the |
47 | identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get | |
48 | relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE | |
49 | since they are the same. */ | |
50 | ||
51 | #define ABI_64_P(abfd) \ | |
52 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) | |
53 | ||
8d88c4ca | 54 | /* The relocation "howto" table. Order of fields: |
7b81dfbb AJ |
55 | type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow, |
56 | special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */ | |
70256ad8 AJ |
57 | static reloc_howto_type x86_64_elf_howto_table[] = |
58 | { | |
b34976b6 AM |
59 | HOWTO(R_X86_64_NONE, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
60 | bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000, | |
61 | FALSE), | |
62 | HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
63 | bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE, | |
64 | FALSE), | |
65 | HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
66 | bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff, | |
67 | TRUE), | |
68 | HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
69 | bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff, | |
70 | FALSE), | |
71 | HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
72 | bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff, | |
73 | TRUE), | |
74 | HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
75 | bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff, | |
76 | FALSE), | |
77 | HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
78 | bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE, | |
79 | MINUS_ONE, FALSE), | |
80 | HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
81 | bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE, | |
82 | MINUS_ONE, FALSE), | |
83 | HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
84 | bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE, | |
85 | MINUS_ONE, FALSE), | |
86 | HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
87 | bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff, | |
88 | 0xffffffff, TRUE), | |
89 | HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned, | |
90 | bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff, | |
91 | FALSE), | |
92 | HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
93 | bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff, | |
94 | FALSE), | |
95 | HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
96 | bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE), | |
b0360d8c | 97 | HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield, |
b34976b6 | 98 | bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE), |
ac2aa337 | 99 | HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
b34976b6 AM |
100 | bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE), |
101 | HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
102 | bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE), | |
103 | HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
104 | bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE, | |
105 | MINUS_ONE, FALSE), | |
106 | HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
107 | bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE, | |
108 | MINUS_ONE, FALSE), | |
109 | HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
110 | bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE, | |
111 | MINUS_ONE, FALSE), | |
112 | HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
113 | bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff, | |
114 | 0xffffffff, TRUE), | |
115 | HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
116 | bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff, | |
117 | 0xffffffff, TRUE), | |
ac2aa337 | 118 | HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed, |
b34976b6 AM |
119 | bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff, |
120 | 0xffffffff, FALSE), | |
121 | HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
122 | bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff, | |
123 | 0xffffffff, TRUE), | |
124 | HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
125 | bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff, | |
126 | 0xffffffff, FALSE), | |
d6ab8113 JB |
127 | HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
128 | bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE, | |
129 | TRUE), | |
130 | HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
131 | bfd_elf_generic_reloc, "R_X86_64_GOTOFF64", | |
132 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
133 | HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
134 | bfd_elf_generic_reloc, "R_X86_64_GOTPC32", | |
135 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
7b81dfbb AJ |
136 | HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed, |
137 | bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE, | |
138 | FALSE), | |
139 | HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed, | |
140 | bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE, | |
141 | MINUS_ONE, TRUE), | |
142 | HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed, | |
143 | bfd_elf_generic_reloc, "R_X86_64_GOTPC64", | |
144 | FALSE, MINUS_ONE, MINUS_ONE, TRUE), | |
145 | HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed, | |
146 | bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE, | |
147 | MINUS_ONE, FALSE), | |
148 | HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed, | |
149 | bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE, | |
150 | MINUS_ONE, FALSE), | |
67a4f2b7 AO |
151 | EMPTY_HOWTO (32), |
152 | EMPTY_HOWTO (33), | |
153 | HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0, | |
154 | complain_overflow_bitfield, bfd_elf_generic_reloc, | |
155 | "R_X86_64_GOTPC32_TLSDESC", | |
156 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
157 | HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0, | |
158 | complain_overflow_dont, bfd_elf_generic_reloc, | |
159 | "R_X86_64_TLSDESC_CALL", | |
160 | FALSE, 0, 0, FALSE), | |
161 | HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0, | |
162 | complain_overflow_bitfield, bfd_elf_generic_reloc, | |
163 | "R_X86_64_TLSDESC", | |
164 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
cbe950e9 L |
165 | HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
166 | bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE, | |
167 | MINUS_ONE, FALSE), | |
64d25c44 L |
168 | HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
169 | bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE, | |
170 | MINUS_ONE, FALSE), | |
fe4770f4 | 171 | |
a33d77bc JB |
172 | /* We have a gap in the reloc numbers here. |
173 | R_X86_64_standard counts the number up to this point, and | |
174 | R_X86_64_vt_offset is the value to subtract from a reloc type of | |
175 | R_X86_64_GNU_VT* to form an index into this table. */ | |
cbe950e9 | 176 | #define R_X86_64_standard (R_X86_64_IRELATIVE + 1) |
a33d77bc JB |
177 | #define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard) |
178 | ||
fe4770f4 | 179 | /* GNU extension to record C++ vtable hierarchy. */ |
b34976b6 AM |
180 | HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
181 | NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE), | |
fe4770f4 AJ |
182 | |
183 | /* GNU extension to record C++ vtable member usage. */ | |
b34976b6 AM |
184 | HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
185 | _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0, | |
d7921315 L |
186 | FALSE), |
187 | ||
188 | /* Use complain_overflow_bitfield on R_X86_64_32 for x32. */ | |
189 | HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
190 | bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff, | |
191 | FALSE) | |
8d88c4ca NC |
192 | }; |
193 | ||
d8045f23 NC |
194 | #define IS_X86_64_PCREL_TYPE(TYPE) \ |
195 | ( ((TYPE) == R_X86_64_PC8) \ | |
196 | || ((TYPE) == R_X86_64_PC16) \ | |
197 | || ((TYPE) == R_X86_64_PC32) \ | |
198 | || ((TYPE) == R_X86_64_PC64)) | |
199 | ||
8d88c4ca | 200 | /* Map BFD relocs to the x86_64 elf relocs. */ |
70256ad8 AJ |
201 | struct elf_reloc_map |
202 | { | |
8d88c4ca NC |
203 | bfd_reloc_code_real_type bfd_reloc_val; |
204 | unsigned char elf_reloc_val; | |
205 | }; | |
206 | ||
dc810e39 | 207 | static const struct elf_reloc_map x86_64_reloc_map[] = |
8d88c4ca | 208 | { |
70256ad8 AJ |
209 | { BFD_RELOC_NONE, R_X86_64_NONE, }, |
210 | { BFD_RELOC_64, R_X86_64_64, }, | |
211 | { BFD_RELOC_32_PCREL, R_X86_64_PC32, }, | |
212 | { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,}, | |
213 | { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,}, | |
214 | { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, }, | |
215 | { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, }, | |
216 | { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, }, | |
217 | { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, }, | |
218 | { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, }, | |
219 | { BFD_RELOC_32, R_X86_64_32, }, | |
220 | { BFD_RELOC_X86_64_32S, R_X86_64_32S, }, | |
221 | { BFD_RELOC_16, R_X86_64_16, }, | |
222 | { BFD_RELOC_16_PCREL, R_X86_64_PC16, }, | |
223 | { BFD_RELOC_8, R_X86_64_8, }, | |
224 | { BFD_RELOC_8_PCREL, R_X86_64_PC8, }, | |
bffbf940 JJ |
225 | { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, }, |
226 | { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, }, | |
227 | { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, }, | |
228 | { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, }, | |
229 | { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, }, | |
230 | { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, }, | |
231 | { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, }, | |
232 | { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, }, | |
d6ab8113 JB |
233 | { BFD_RELOC_64_PCREL, R_X86_64_PC64, }, |
234 | { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, }, | |
235 | { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, }, | |
7b81dfbb AJ |
236 | { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, }, |
237 | { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, }, | |
238 | { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, }, | |
239 | { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, }, | |
240 | { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, }, | |
67a4f2b7 AO |
241 | { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, }, |
242 | { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, }, | |
243 | { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, }, | |
cbe950e9 | 244 | { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, }, |
fe4770f4 AJ |
245 | { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, }, |
246 | { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, }, | |
8d88c4ca NC |
247 | }; |
248 | ||
67a4f2b7 | 249 | static reloc_howto_type * |
351f65ca | 250 | elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type) |
67a4f2b7 AO |
251 | { |
252 | unsigned i; | |
253 | ||
d7921315 L |
254 | if (r_type == (unsigned int) R_X86_64_32) |
255 | { | |
256 | if (ABI_64_P (abfd)) | |
257 | i = r_type; | |
258 | else | |
259 | i = ARRAY_SIZE (x86_64_elf_howto_table) - 1; | |
260 | } | |
261 | else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT | |
262 | || r_type >= (unsigned int) R_X86_64_max) | |
67a4f2b7 AO |
263 | { |
264 | if (r_type >= (unsigned int) R_X86_64_standard) | |
265 | { | |
266 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
267 | abfd, (int) r_type); | |
268 | r_type = R_X86_64_NONE; | |
269 | } | |
270 | i = r_type; | |
271 | } | |
272 | else | |
273 | i = r_type - (unsigned int) R_X86_64_vt_offset; | |
274 | BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type); | |
275 | return &x86_64_elf_howto_table[i]; | |
276 | } | |
8d88c4ca NC |
277 | |
278 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
279 | static reloc_howto_type * | |
351f65ca L |
280 | elf_x86_64_reloc_type_lookup (bfd *abfd, |
281 | bfd_reloc_code_real_type code) | |
8d88c4ca NC |
282 | { |
283 | unsigned int i; | |
27482721 | 284 | |
8d88c4ca NC |
285 | for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map); |
286 | i++) | |
287 | { | |
288 | if (x86_64_reloc_map[i].bfd_reloc_val == code) | |
351f65ca L |
289 | return elf_x86_64_rtype_to_howto (abfd, |
290 | x86_64_reloc_map[i].elf_reloc_val); | |
8d88c4ca NC |
291 | } |
292 | return 0; | |
293 | } | |
294 | ||
157090f7 | 295 | static reloc_howto_type * |
d7921315 | 296 | elf_x86_64_reloc_name_lookup (bfd *abfd, |
351f65ca | 297 | const char *r_name) |
157090f7 AM |
298 | { |
299 | unsigned int i; | |
300 | ||
d7921315 L |
301 | if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0) |
302 | { | |
303 | /* Get x32 R_X86_64_32. */ | |
304 | reloc_howto_type *reloc | |
305 | = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1]; | |
306 | BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32); | |
307 | return reloc; | |
308 | } | |
309 | ||
310 | for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++) | |
157090f7 AM |
311 | if (x86_64_elf_howto_table[i].name != NULL |
312 | && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0) | |
313 | return &x86_64_elf_howto_table[i]; | |
314 | ||
315 | return NULL; | |
316 | } | |
317 | ||
8d88c4ca | 318 | /* Given an x86_64 ELF reloc type, fill in an arelent structure. */ |
8da6118f | 319 | |
8d88c4ca | 320 | static void |
351f65ca L |
321 | elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
322 | Elf_Internal_Rela *dst) | |
8d88c4ca | 323 | { |
67a4f2b7 | 324 | unsigned r_type; |
8d88c4ca | 325 | |
351f65ca L |
326 | r_type = ELF32_R_TYPE (dst->r_info); |
327 | cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type); | |
8d88c4ca NC |
328 | BFD_ASSERT (r_type == cache_ptr->howto->type); |
329 | } | |
70256ad8 | 330 | \f |
3bab7989 | 331 | /* Support for core dump NOTE sections. */ |
b34976b6 | 332 | static bfd_boolean |
351f65ca | 333 | elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
334 | { |
335 | int offset; | |
eea6121a | 336 | size_t size; |
3bab7989 ML |
337 | |
338 | switch (note->descsz) | |
339 | { | |
340 | default: | |
b34976b6 | 341 | return FALSE; |
3bab7989 | 342 | |
bcd823f1 L |
343 | case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */ |
344 | /* pr_cursig */ | |
345 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
346 | ||
347 | /* pr_pid */ | |
348 | elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
349 | ||
350 | /* pr_reg */ | |
351 | offset = 72; | |
352 | size = 216; | |
353 | ||
354 | break; | |
355 | ||
3bab7989 ML |
356 | case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */ |
357 | /* pr_cursig */ | |
cedb70c5 | 358 | elf_tdata (abfd)->core_signal |
3bab7989 ML |
359 | = bfd_get_16 (abfd, note->descdata + 12); |
360 | ||
361 | /* pr_pid */ | |
261b8d08 | 362 | elf_tdata (abfd)->core_lwpid |
3bab7989 ML |
363 | = bfd_get_32 (abfd, note->descdata + 32); |
364 | ||
365 | /* pr_reg */ | |
366 | offset = 112; | |
eea6121a | 367 | size = 216; |
3bab7989 ML |
368 | |
369 | break; | |
370 | } | |
371 | ||
372 | /* Make a ".reg/999" section. */ | |
373 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 374 | size, note->descpos + offset); |
3bab7989 ML |
375 | } |
376 | ||
b34976b6 | 377 | static bfd_boolean |
351f65ca | 378 | elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
379 | { |
380 | switch (note->descsz) | |
381 | { | |
382 | default: | |
b34976b6 | 383 | return FALSE; |
3bab7989 | 384 | |
bcd823f1 L |
385 | case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */ |
386 | elf_tdata (abfd)->core_pid | |
387 | = bfd_get_32 (abfd, note->descdata + 12); | |
388 | elf_tdata (abfd)->core_program | |
389 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
390 | elf_tdata (abfd)->core_command | |
391 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
392 | break; | |
393 | ||
3bab7989 | 394 | case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */ |
261b8d08 PA |
395 | elf_tdata (abfd)->core_pid |
396 | = bfd_get_32 (abfd, note->descdata + 24); | |
3bab7989 ML |
397 | elf_tdata (abfd)->core_program |
398 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
399 | elf_tdata (abfd)->core_command | |
400 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
401 | } | |
402 | ||
403 | /* Note that for some reason, a spurious space is tacked | |
404 | onto the end of the args in some (at least one anyway) | |
405 | implementations, so strip it off if it exists. */ | |
406 | ||
407 | { | |
408 | char *command = elf_tdata (abfd)->core_command; | |
409 | int n = strlen (command); | |
410 | ||
411 | if (0 < n && command[n - 1] == ' ') | |
412 | command[n - 1] = '\0'; | |
413 | } | |
414 | ||
b34976b6 | 415 | return TRUE; |
3bab7989 | 416 | } |
8fd79e71 L |
417 | |
418 | #ifdef CORE_HEADER | |
419 | static char * | |
420 | elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
421 | int note_type, ...) | |
422 | { | |
423 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8fd79e71 L |
424 | va_list ap; |
425 | const char *fname, *psargs; | |
426 | long pid; | |
427 | int cursig; | |
428 | const void *gregs; | |
429 | ||
430 | switch (note_type) | |
431 | { | |
432 | default: | |
433 | return NULL; | |
434 | ||
435 | case NT_PRPSINFO: | |
436 | va_start (ap, note_type); | |
437 | fname = va_arg (ap, const char *); | |
438 | psargs = va_arg (ap, const char *); | |
439 | va_end (ap); | |
440 | ||
441 | if (bed->s->elfclass == ELFCLASS32) | |
442 | { | |
443 | prpsinfo32_t data; | |
444 | memset (&data, 0, sizeof (data)); | |
445 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
446 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
e85c6a70 JK |
447 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
448 | &data, sizeof (data)); | |
8fd79e71 L |
449 | } |
450 | else | |
451 | { | |
452 | prpsinfo_t data; | |
453 | memset (&data, 0, sizeof (data)); | |
454 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
455 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
e85c6a70 JK |
456 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
457 | &data, sizeof (data)); | |
8fd79e71 | 458 | } |
e85c6a70 | 459 | /* NOTREACHED */ |
8fd79e71 L |
460 | |
461 | case NT_PRSTATUS: | |
462 | va_start (ap, note_type); | |
463 | pid = va_arg (ap, long); | |
464 | cursig = va_arg (ap, int); | |
465 | gregs = va_arg (ap, const void *); | |
466 | va_end (ap); | |
467 | ||
468 | if (bed->s->elfclass == ELFCLASS32) | |
469 | { | |
470 | if (bed->elf_machine_code == EM_X86_64) | |
471 | { | |
472 | prstatusx32_t prstat; | |
473 | memset (&prstat, 0, sizeof (prstat)); | |
474 | prstat.pr_pid = pid; | |
475 | prstat.pr_cursig = cursig; | |
476 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
477 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
478 | &prstat, sizeof (prstat)); | |
8fd79e71 L |
479 | } |
480 | else | |
481 | { | |
482 | prstatus32_t prstat; | |
483 | memset (&prstat, 0, sizeof (prstat)); | |
484 | prstat.pr_pid = pid; | |
485 | prstat.pr_cursig = cursig; | |
486 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
487 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
488 | &prstat, sizeof (prstat)); | |
8fd79e71 L |
489 | } |
490 | } | |
491 | else | |
492 | { | |
493 | prstatus_t prstat; | |
494 | memset (&prstat, 0, sizeof (prstat)); | |
495 | prstat.pr_pid = pid; | |
496 | prstat.pr_cursig = cursig; | |
497 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
498 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
499 | &prstat, sizeof (prstat)); | |
8fd79e71 | 500 | } |
8fd79e71 | 501 | } |
e85c6a70 | 502 | /* NOTREACHED */ |
8fd79e71 L |
503 | } |
504 | #endif | |
3bab7989 | 505 | \f |
407443a3 | 506 | /* Functions for the x86-64 ELF linker. */ |
70256ad8 | 507 | |
407443a3 | 508 | /* The name of the dynamic interpreter. This is put in the .interp |
70256ad8 AJ |
509 | section. */ |
510 | ||
351f65ca | 511 | #define ELF64_DYNAMIC_INTERPRETER "/lib/ld64.so.1" |
eec9dd95 | 512 | #define ELF32_DYNAMIC_INTERPRETER "/lib/ldx32.so.1" |
70256ad8 | 513 | |
d40d037c AJ |
514 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
515 | copying dynamic variables from a shared lib into an app's dynbss | |
516 | section, and instead use a dynamic relocation to point into the | |
517 | shared lib. */ | |
518 | #define ELIMINATE_COPY_RELOCS 1 | |
519 | ||
70256ad8 AJ |
520 | /* The size in bytes of an entry in the global offset table. */ |
521 | ||
522 | #define GOT_ENTRY_SIZE 8 | |
8d88c4ca | 523 | |
70256ad8 | 524 | /* The size in bytes of an entry in the procedure linkage table. */ |
8d88c4ca | 525 | |
70256ad8 AJ |
526 | #define PLT_ENTRY_SIZE 16 |
527 | ||
528 | /* The first entry in a procedure linkage table looks like this. See the | |
529 | SVR4 ABI i386 supplement and the x86-64 ABI to see how this works. */ | |
530 | ||
351f65ca | 531 | static const bfd_byte elf_x86_64_plt0_entry[PLT_ENTRY_SIZE] = |
70256ad8 | 532 | { |
653165cc AJ |
533 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ |
534 | 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */ | |
10efb593 | 535 | 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */ |
70256ad8 AJ |
536 | }; |
537 | ||
538 | /* Subsequent entries in a procedure linkage table look like this. */ | |
539 | ||
351f65ca | 540 | static const bfd_byte elf_x86_64_plt_entry[PLT_ENTRY_SIZE] = |
70256ad8 | 541 | { |
653165cc | 542 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ |
407443a3 | 543 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ |
653165cc | 544 | 0x68, /* pushq immediate */ |
70256ad8 AJ |
545 | 0, 0, 0, 0, /* replaced with index into relocation table. */ |
546 | 0xe9, /* jmp relative */ | |
547 | 0, 0, 0, 0 /* replaced with offset to start of .plt0. */ | |
548 | }; | |
549 | ||
e41b3a13 JJ |
550 | /* .eh_frame covering the .plt section. */ |
551 | ||
552 | static const bfd_byte elf_x86_64_eh_frame_plt[] = | |
553 | { | |
554 | #define PLT_CIE_LENGTH 20 | |
555 | #define PLT_FDE_LENGTH 36 | |
556 | #define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8 | |
557 | #define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12 | |
558 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
559 | 0, 0, 0, 0, /* CIE ID */ | |
560 | 1, /* CIE version */ | |
561 | 'z', 'R', 0, /* Augmentation string */ | |
562 | 1, /* Code alignment factor */ | |
563 | 0x78, /* Data alignment factor */ | |
564 | 16, /* Return address column */ | |
565 | 1, /* Augmentation size */ | |
566 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
567 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
568 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
569 | DW_CFA_nop, DW_CFA_nop, | |
570 | ||
571 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
572 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
573 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
574 | 0, 0, 0, 0, /* .plt size goes here */ | |
575 | 0, /* Augmentation size */ | |
576 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
577 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
578 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
579 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
580 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
581 | 11, /* Block length */ | |
582 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
583 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
584 | DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge, | |
585 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
586 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
587 | }; | |
588 | ||
eed180f8 RM |
589 | /* Architecture-specific backend data for x86-64. */ |
590 | ||
591 | struct elf_x86_64_backend_data | |
592 | { | |
593 | /* Templates for the initial PLT entry and for subsequent entries. */ | |
594 | const bfd_byte *plt0_entry; | |
595 | const bfd_byte *plt_entry; | |
596 | unsigned int plt_entry_size; /* Size of each PLT entry. */ | |
597 | ||
598 | /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */ | |
599 | unsigned int plt0_got1_offset; | |
600 | unsigned int plt0_got2_offset; | |
601 | ||
602 | /* Offset of the end of the PC-relative instruction containing | |
603 | plt0_got2_offset. */ | |
604 | unsigned int plt0_got2_insn_end; | |
605 | ||
606 | /* Offsets into plt_entry that are to be replaced with... */ | |
607 | unsigned int plt_got_offset; /* ... address of this symbol in .got. */ | |
608 | unsigned int plt_reloc_offset; /* ... offset into relocation table. */ | |
609 | unsigned int plt_plt_offset; /* ... offset to start of .plt. */ | |
610 | ||
611 | /* Length of the PC-relative instruction containing plt_got_offset. */ | |
612 | unsigned int plt_got_insn_size; | |
613 | ||
614 | /* Offset of the end of the PC-relative jump to plt0_entry. */ | |
615 | unsigned int plt_plt_insn_end; | |
616 | ||
617 | /* Offset into plt_entry where the initial value of the GOT entry points. */ | |
618 | unsigned int plt_lazy_offset; | |
619 | ||
620 | /* .eh_frame covering the .plt section. */ | |
621 | const bfd_byte *eh_frame_plt; | |
622 | unsigned int eh_frame_plt_size; | |
623 | }; | |
624 | ||
625 | #define get_elf_x86_64_backend_data(abfd) \ | |
626 | ((const struct elf_x86_64_backend_data *) \ | |
627 | get_elf_backend_data (abfd)->arch_data) | |
628 | ||
629 | #define GET_PLT_ENTRY_SIZE(abfd) \ | |
630 | get_elf_x86_64_backend_data (abfd)->plt_entry_size | |
631 | ||
632 | /* These are the standard parameters. */ | |
633 | static const struct elf_x86_64_backend_data elf_x86_64_arch_bed = | |
634 | { | |
635 | elf_x86_64_plt0_entry, /* plt0_entry */ | |
636 | elf_x86_64_plt_entry, /* plt_entry */ | |
637 | sizeof (elf_x86_64_plt_entry), /* plt_entry_size */ | |
638 | 2, /* plt0_got1_offset */ | |
639 | 8, /* plt0_got2_offset */ | |
640 | 12, /* plt0_got2_insn_end */ | |
641 | 2, /* plt_got_offset */ | |
642 | 7, /* plt_reloc_offset */ | |
643 | 12, /* plt_plt_offset */ | |
644 | 6, /* plt_got_insn_size */ | |
645 | PLT_ENTRY_SIZE, /* plt_plt_insn_end */ | |
646 | 6, /* plt_lazy_offset */ | |
647 | elf_x86_64_eh_frame_plt, /* eh_frame_plt */ | |
648 | sizeof (elf_x86_64_eh_frame_plt), /* eh_frame_plt_size */ | |
649 | }; | |
650 | ||
651 | #define elf_backend_arch_data &elf_x86_64_arch_bed | |
652 | ||
70256ad8 AJ |
653 | /* x86-64 ELF linker hash entry. */ |
654 | ||
351f65ca | 655 | struct elf_x86_64_link_hash_entry |
70256ad8 | 656 | { |
c434dee6 | 657 | struct elf_link_hash_entry elf; |
70256ad8 | 658 | |
c434dee6 | 659 | /* Track dynamic relocs copied for this symbol. */ |
e03a8ed8 | 660 | struct elf_dyn_relocs *dyn_relocs; |
bffbf940 JJ |
661 | |
662 | #define GOT_UNKNOWN 0 | |
663 | #define GOT_NORMAL 1 | |
664 | #define GOT_TLS_GD 2 | |
665 | #define GOT_TLS_IE 3 | |
67a4f2b7 AO |
666 | #define GOT_TLS_GDESC 4 |
667 | #define GOT_TLS_GD_BOTH_P(type) \ | |
668 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
669 | #define GOT_TLS_GD_P(type) \ | |
670 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
671 | #define GOT_TLS_GDESC_P(type) \ | |
672 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
673 | #define GOT_TLS_GD_ANY_P(type) \ | |
674 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
bffbf940 | 675 | unsigned char tls_type; |
67a4f2b7 AO |
676 | |
677 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, | |
678 | starting at the end of the jump table. */ | |
679 | bfd_vma tlsdesc_got; | |
bffbf940 JJ |
680 | }; |
681 | ||
351f65ca L |
682 | #define elf_x86_64_hash_entry(ent) \ |
683 | ((struct elf_x86_64_link_hash_entry *)(ent)) | |
bffbf940 | 684 | |
351f65ca | 685 | struct elf_x86_64_obj_tdata |
bffbf940 JJ |
686 | { |
687 | struct elf_obj_tdata root; | |
688 | ||
689 | /* tls_type for each local got entry. */ | |
690 | char *local_got_tls_type; | |
67a4f2b7 AO |
691 | |
692 | /* GOTPLT entries for TLS descriptors. */ | |
693 | bfd_vma *local_tlsdesc_gotent; | |
70256ad8 AJ |
694 | }; |
695 | ||
351f65ca L |
696 | #define elf_x86_64_tdata(abfd) \ |
697 | ((struct elf_x86_64_obj_tdata *) (abfd)->tdata.any) | |
bffbf940 | 698 | |
351f65ca L |
699 | #define elf_x86_64_local_got_tls_type(abfd) \ |
700 | (elf_x86_64_tdata (abfd)->local_got_tls_type) | |
bffbf940 | 701 | |
351f65ca L |
702 | #define elf_x86_64_local_tlsdesc_gotent(abfd) \ |
703 | (elf_x86_64_tdata (abfd)->local_tlsdesc_gotent) | |
bffbf940 | 704 | |
0ffa91dd NC |
705 | #define is_x86_64_elf(bfd) \ |
706 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
707 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 708 | && elf_object_id (bfd) == X86_64_ELF_DATA) |
0ffa91dd NC |
709 | |
710 | static bfd_boolean | |
351f65ca | 711 | elf_x86_64_mkobject (bfd *abfd) |
0ffa91dd | 712 | { |
351f65ca | 713 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_x86_64_obj_tdata), |
4dfe6ac6 | 714 | X86_64_ELF_DATA); |
0ffa91dd NC |
715 | } |
716 | ||
c434dee6 | 717 | /* x86-64 ELF linker hash table. */ |
8d88c4ca | 718 | |
351f65ca | 719 | struct elf_x86_64_link_hash_table |
407443a3 | 720 | { |
c434dee6 | 721 | struct elf_link_hash_table elf; |
70256ad8 | 722 | |
c434dee6 | 723 | /* Short-cuts to get to dynamic linker sections. */ |
c434dee6 AJ |
724 | asection *sdynbss; |
725 | asection *srelbss; | |
e41b3a13 | 726 | asection *plt_eh_frame; |
70256ad8 | 727 | |
4dfe6ac6 NC |
728 | union |
729 | { | |
bffbf940 JJ |
730 | bfd_signed_vma refcount; |
731 | bfd_vma offset; | |
732 | } tls_ld_got; | |
733 | ||
67a4f2b7 AO |
734 | /* The amount of space used by the jump slots in the GOT. */ |
735 | bfd_vma sgotplt_jump_table_size; | |
736 | ||
87d72d41 AM |
737 | /* Small local sym cache. */ |
738 | struct sym_cache sym_cache; | |
9f03412a | 739 | |
351f65ca L |
740 | bfd_vma (*r_info) (bfd_vma, bfd_vma); |
741 | bfd_vma (*r_sym) (bfd_vma); | |
248775ba | 742 | unsigned int pointer_r_type; |
351f65ca L |
743 | const char *dynamic_interpreter; |
744 | int dynamic_interpreter_size; | |
745 | ||
9f03412a AO |
746 | /* _TLS_MODULE_BASE_ symbol. */ |
747 | struct bfd_link_hash_entry *tls_module_base; | |
c25bc9fc L |
748 | |
749 | /* Used by local STT_GNU_IFUNC symbols. */ | |
750 | htab_t loc_hash_table; | |
4dfe6ac6 NC |
751 | void * loc_hash_memory; |
752 | ||
753 | /* The offset into splt of the PLT entry for the TLS descriptor | |
754 | resolver. Special values are 0, if not necessary (or not found | |
755 | to be necessary yet), and -1 if needed but not determined | |
756 | yet. */ | |
757 | bfd_vma tlsdesc_plt; | |
758 | /* The offset into sgot of the GOT entry used by the PLT entry | |
759 | above. */ | |
760 | bfd_vma tlsdesc_got; | |
e1f98742 L |
761 | |
762 | /* The index of the next R_X86_64_JUMP_SLOT entry in .rela.plt. */ | |
763 | bfd_vma next_jump_slot_index; | |
764 | /* The index of the next R_X86_64_IRELATIVE entry in .rela.plt. */ | |
765 | bfd_vma next_irelative_index; | |
c434dee6 | 766 | }; |
70256ad8 AJ |
767 | |
768 | /* Get the x86-64 ELF linker hash table from a link_info structure. */ | |
8d88c4ca | 769 | |
351f65ca | 770 | #define elf_x86_64_hash_table(p) \ |
4dfe6ac6 | 771 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
351f65ca | 772 | == X86_64_ELF_DATA ? ((struct elf_x86_64_link_hash_table *) ((p)->hash)) : NULL) |
8d88c4ca | 773 | |
351f65ca | 774 | #define elf_x86_64_compute_jump_table_size(htab) \ |
6de2ae4a | 775 | ((htab)->elf.srelplt->reloc_count * GOT_ENTRY_SIZE) |
67a4f2b7 | 776 | |
407443a3 | 777 | /* Create an entry in an x86-64 ELF linker hash table. */ |
70256ad8 AJ |
778 | |
779 | static struct bfd_hash_entry * | |
351f65ca L |
780 | elf_x86_64_link_hash_newfunc (struct bfd_hash_entry *entry, |
781 | struct bfd_hash_table *table, | |
782 | const char *string) | |
70256ad8 | 783 | { |
70256ad8 | 784 | /* Allocate the structure if it has not already been allocated by a |
c434dee6 AJ |
785 | subclass. */ |
786 | if (entry == NULL) | |
787 | { | |
a50b1753 | 788 | entry = (struct bfd_hash_entry *) |
eed180f8 RM |
789 | bfd_hash_allocate (table, |
790 | sizeof (struct elf_x86_64_link_hash_entry)); | |
c434dee6 AJ |
791 | if (entry == NULL) |
792 | return entry; | |
793 | } | |
70256ad8 AJ |
794 | |
795 | /* Call the allocation method of the superclass. */ | |
c434dee6 AJ |
796 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
797 | if (entry != NULL) | |
70256ad8 | 798 | { |
351f65ca | 799 | struct elf_x86_64_link_hash_entry *eh; |
c434dee6 | 800 | |
351f65ca | 801 | eh = (struct elf_x86_64_link_hash_entry *) entry; |
c434dee6 | 802 | eh->dyn_relocs = NULL; |
bffbf940 | 803 | eh->tls_type = GOT_UNKNOWN; |
67a4f2b7 | 804 | eh->tlsdesc_got = (bfd_vma) -1; |
70256ad8 AJ |
805 | } |
806 | ||
c434dee6 | 807 | return entry; |
70256ad8 AJ |
808 | } |
809 | ||
c25bc9fc L |
810 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
811 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
812 | as global symbol. We reuse indx and dynstr_index for local symbol | |
813 | hash since they aren't used by global symbols in this backend. */ | |
814 | ||
815 | static hashval_t | |
351f65ca | 816 | elf_x86_64_local_htab_hash (const void *ptr) |
c25bc9fc L |
817 | { |
818 | struct elf_link_hash_entry *h | |
819 | = (struct elf_link_hash_entry *) ptr; | |
d2149d72 | 820 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); |
c25bc9fc L |
821 | } |
822 | ||
823 | /* Compare local hash entries. */ | |
824 | ||
825 | static int | |
351f65ca | 826 | elf_x86_64_local_htab_eq (const void *ptr1, const void *ptr2) |
c25bc9fc L |
827 | { |
828 | struct elf_link_hash_entry *h1 | |
829 | = (struct elf_link_hash_entry *) ptr1; | |
830 | struct elf_link_hash_entry *h2 | |
831 | = (struct elf_link_hash_entry *) ptr2; | |
832 | ||
833 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
834 | } | |
835 | ||
836 | /* Find and/or create a hash entry for local symbol. */ | |
837 | ||
838 | static struct elf_link_hash_entry * | |
351f65ca L |
839 | elf_x86_64_get_local_sym_hash (struct elf_x86_64_link_hash_table *htab, |
840 | bfd *abfd, const Elf_Internal_Rela *rel, | |
841 | bfd_boolean create) | |
c25bc9fc | 842 | { |
351f65ca | 843 | struct elf_x86_64_link_hash_entry e, *ret; |
c25bc9fc | 844 | asection *sec = abfd->sections; |
d2149d72 | 845 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, |
351f65ca | 846 | htab->r_sym (rel->r_info)); |
c25bc9fc L |
847 | void **slot; |
848 | ||
849 | e.elf.indx = sec->id; | |
351f65ca | 850 | e.elf.dynstr_index = htab->r_sym (rel->r_info); |
c25bc9fc L |
851 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, |
852 | create ? INSERT : NO_INSERT); | |
853 | ||
854 | if (!slot) | |
855 | return NULL; | |
856 | ||
857 | if (*slot) | |
858 | { | |
351f65ca | 859 | ret = (struct elf_x86_64_link_hash_entry *) *slot; |
c25bc9fc L |
860 | return &ret->elf; |
861 | } | |
862 | ||
351f65ca | 863 | ret = (struct elf_x86_64_link_hash_entry *) |
c25bc9fc | 864 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, |
351f65ca | 865 | sizeof (struct elf_x86_64_link_hash_entry)); |
c25bc9fc L |
866 | if (ret) |
867 | { | |
868 | memset (ret, 0, sizeof (*ret)); | |
869 | ret->elf.indx = sec->id; | |
351f65ca | 870 | ret->elf.dynstr_index = htab->r_sym (rel->r_info); |
c25bc9fc | 871 | ret->elf.dynindx = -1; |
c25bc9fc L |
872 | *slot = ret; |
873 | } | |
874 | return &ret->elf; | |
875 | } | |
876 | ||
8d88c4ca NC |
877 | /* Create an X86-64 ELF linker hash table. */ |
878 | ||
879 | static struct bfd_link_hash_table * | |
351f65ca | 880 | elf_x86_64_link_hash_table_create (bfd *abfd) |
8d88c4ca | 881 | { |
351f65ca L |
882 | struct elf_x86_64_link_hash_table *ret; |
883 | bfd_size_type amt = sizeof (struct elf_x86_64_link_hash_table); | |
8d88c4ca | 884 | |
351f65ca | 885 | ret = (struct elf_x86_64_link_hash_table *) bfd_malloc (amt); |
c434dee6 | 886 | if (ret == NULL) |
8d88c4ca NC |
887 | return NULL; |
888 | ||
eb4ff4d6 | 889 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
351f65ca L |
890 | elf_x86_64_link_hash_newfunc, |
891 | sizeof (struct elf_x86_64_link_hash_entry), | |
4dfe6ac6 | 892 | X86_64_ELF_DATA)) |
8d88c4ca | 893 | { |
e2d34d7d | 894 | free (ret); |
8d88c4ca NC |
895 | return NULL; |
896 | } | |
897 | ||
c434dee6 AJ |
898 | ret->sdynbss = NULL; |
899 | ret->srelbss = NULL; | |
332ce62b | 900 | ret->plt_eh_frame = NULL; |
87d72d41 | 901 | ret->sym_cache.abfd = NULL; |
67a4f2b7 AO |
902 | ret->tlsdesc_plt = 0; |
903 | ret->tlsdesc_got = 0; | |
bffbf940 | 904 | ret->tls_ld_got.refcount = 0; |
67a4f2b7 | 905 | ret->sgotplt_jump_table_size = 0; |
9f03412a | 906 | ret->tls_module_base = NULL; |
eed180f8 | 907 | ret->next_jump_slot_index = 0; |
e1f98742 | 908 | ret->next_irelative_index = 0; |
6bbec505 | 909 | |
351f65ca L |
910 | if (ABI_64_P (abfd)) |
911 | { | |
912 | ret->r_info = elf64_r_info; | |
913 | ret->r_sym = elf64_r_sym; | |
248775ba | 914 | ret->pointer_r_type = R_X86_64_64; |
351f65ca L |
915 | ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; |
916 | ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER; | |
917 | } | |
918 | else | |
919 | { | |
920 | ret->r_info = elf32_r_info; | |
921 | ret->r_sym = elf32_r_sym; | |
248775ba | 922 | ret->pointer_r_type = R_X86_64_32; |
351f65ca L |
923 | ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; |
924 | ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER; | |
925 | } | |
926 | ||
c25bc9fc | 927 | ret->loc_hash_table = htab_try_create (1024, |
351f65ca L |
928 | elf_x86_64_local_htab_hash, |
929 | elf_x86_64_local_htab_eq, | |
c25bc9fc L |
930 | NULL); |
931 | ret->loc_hash_memory = objalloc_create (); | |
932 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
933 | { | |
934 | free (ret); | |
935 | return NULL; | |
936 | } | |
937 | ||
c434dee6 AJ |
938 | return &ret->elf.root; |
939 | } | |
940 | ||
c25bc9fc L |
941 | /* Destroy an X86-64 ELF linker hash table. */ |
942 | ||
943 | static void | |
351f65ca | 944 | elf_x86_64_link_hash_table_free (struct bfd_link_hash_table *hash) |
c25bc9fc | 945 | { |
351f65ca L |
946 | struct elf_x86_64_link_hash_table *htab |
947 | = (struct elf_x86_64_link_hash_table *) hash; | |
c25bc9fc L |
948 | |
949 | if (htab->loc_hash_table) | |
950 | htab_delete (htab->loc_hash_table); | |
951 | if (htab->loc_hash_memory) | |
952 | objalloc_free ((struct objalloc *) htab->loc_hash_memory); | |
953 | _bfd_generic_link_hash_table_free (hash); | |
954 | } | |
955 | ||
c434dee6 AJ |
956 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and |
957 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
958 | hash table. */ | |
959 | ||
b34976b6 | 960 | static bfd_boolean |
351f65ca L |
961 | elf_x86_64_create_dynamic_sections (bfd *dynobj, |
962 | struct bfd_link_info *info) | |
c434dee6 | 963 | { |
351f65ca | 964 | struct elf_x86_64_link_hash_table *htab; |
c434dee6 | 965 | |
c434dee6 | 966 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 967 | return FALSE; |
c434dee6 | 968 | |
351f65ca | 969 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
970 | if (htab == NULL) |
971 | return FALSE; | |
972 | ||
c434dee6 AJ |
973 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
974 | if (!info->shared) | |
975 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
976 | ||
6de2ae4a | 977 | if (!htab->sdynbss |
c434dee6 AJ |
978 | || (!info->shared && !htab->srelbss)) |
979 | abort (); | |
980 | ||
e41b3a13 JJ |
981 | if (!info->no_ld_generated_unwind_info |
982 | && bfd_get_section_by_name (dynobj, ".eh_frame") == NULL | |
983 | && htab->elf.splt != NULL) | |
984 | { | |
a4456d24 | 985 | const struct elf_x86_64_backend_data *const abed |
8059fb19 | 986 | = get_elf_x86_64_backend_data (dynobj); |
e41b3a13 JJ |
987 | flagword flags = get_elf_backend_data (dynobj)->dynamic_sec_flags; |
988 | htab->plt_eh_frame | |
989 | = bfd_make_section_with_flags (dynobj, ".eh_frame", | |
990 | flags | SEC_READONLY); | |
991 | if (htab->plt_eh_frame == NULL | |
992 | || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 3)) | |
993 | return FALSE; | |
994 | ||
a4456d24 | 995 | htab->plt_eh_frame->size = abed->eh_frame_plt_size; |
e41b3a13 | 996 | htab->plt_eh_frame->contents |
8059fb19 | 997 | = bfd_alloc (dynobj, htab->plt_eh_frame->size); |
a4456d24 | 998 | memcpy (htab->plt_eh_frame->contents, |
8059fb19 | 999 | abed->eh_frame_plt, abed->eh_frame_plt_size); |
e41b3a13 | 1000 | } |
b34976b6 | 1001 | return TRUE; |
c434dee6 AJ |
1002 | } |
1003 | ||
1004 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
1005 | ||
1006 | static void | |
351f65ca L |
1007 | elf_x86_64_copy_indirect_symbol (struct bfd_link_info *info, |
1008 | struct elf_link_hash_entry *dir, | |
1009 | struct elf_link_hash_entry *ind) | |
c434dee6 | 1010 | { |
351f65ca | 1011 | struct elf_x86_64_link_hash_entry *edir, *eind; |
c434dee6 | 1012 | |
351f65ca L |
1013 | edir = (struct elf_x86_64_link_hash_entry *) dir; |
1014 | eind = (struct elf_x86_64_link_hash_entry *) ind; | |
c434dee6 AJ |
1015 | |
1016 | if (eind->dyn_relocs != NULL) | |
1017 | { | |
1018 | if (edir->dyn_relocs != NULL) | |
1019 | { | |
e03a8ed8 L |
1020 | struct elf_dyn_relocs **pp; |
1021 | struct elf_dyn_relocs *p; | |
c434dee6 | 1022 | |
fcfa13d2 | 1023 | /* Add reloc counts against the indirect sym to the direct sym |
c434dee6 AJ |
1024 | list. Merge any entries against the same section. */ |
1025 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
1026 | { | |
e03a8ed8 | 1027 | struct elf_dyn_relocs *q; |
c434dee6 AJ |
1028 | |
1029 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
1030 | if (q->sec == p->sec) | |
1031 | { | |
1032 | q->pc_count += p->pc_count; | |
1033 | q->count += p->count; | |
1034 | *pp = p->next; | |
1035 | break; | |
1036 | } | |
1037 | if (q == NULL) | |
1038 | pp = &p->next; | |
1039 | } | |
1040 | *pp = edir->dyn_relocs; | |
1041 | } | |
1042 | ||
1043 | edir->dyn_relocs = eind->dyn_relocs; | |
1044 | eind->dyn_relocs = NULL; | |
1045 | } | |
1046 | ||
bffbf940 JJ |
1047 | if (ind->root.type == bfd_link_hash_indirect |
1048 | && dir->got.refcount <= 0) | |
1049 | { | |
1050 | edir->tls_type = eind->tls_type; | |
1051 | eind->tls_type = GOT_UNKNOWN; | |
1052 | } | |
1053 | ||
d40d037c AJ |
1054 | if (ELIMINATE_COPY_RELOCS |
1055 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
1056 | && dir->dynamic_adjusted) |
1057 | { | |
1058 | /* If called to transfer flags for a weakdef during processing | |
1059 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
1060 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
1061 | dir->ref_dynamic |= ind->ref_dynamic; | |
1062 | dir->ref_regular |= ind->ref_regular; | |
1063 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1064 | dir->needs_plt |= ind->needs_plt; | |
1065 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
1066 | } | |
d40d037c | 1067 | else |
fcfa13d2 | 1068 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
8d88c4ca NC |
1069 | } |
1070 | ||
b34976b6 | 1071 | static bfd_boolean |
27482721 | 1072 | elf64_x86_64_elf_object_p (bfd *abfd) |
bffbf940 | 1073 | { |
8d88c4ca NC |
1074 | /* Set the right machine number for an x86-64 elf64 file. */ |
1075 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); | |
b34976b6 | 1076 | return TRUE; |
8d88c4ca NC |
1077 | } |
1078 | ||
8059fb19 RM |
1079 | static bfd_boolean |
1080 | elf32_x86_64_elf_object_p (bfd *abfd) | |
1081 | { | |
1082 | /* Set the right machine number for an x86-64 elf32 file. */ | |
1083 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32); | |
1084 | return TRUE; | |
1085 | } | |
1086 | ||
142411ca L |
1087 | /* Return TRUE if the TLS access code sequence support transition |
1088 | from R_TYPE. */ | |
1089 | ||
1090 | static bfd_boolean | |
351f65ca L |
1091 | elf_x86_64_check_tls_transition (bfd *abfd, |
1092 | struct bfd_link_info *info, | |
1093 | asection *sec, | |
1094 | bfd_byte *contents, | |
1095 | Elf_Internal_Shdr *symtab_hdr, | |
1096 | struct elf_link_hash_entry **sym_hashes, | |
1097 | unsigned int r_type, | |
1098 | const Elf_Internal_Rela *rel, | |
1099 | const Elf_Internal_Rela *relend) | |
bffbf940 | 1100 | { |
142411ca L |
1101 | unsigned int val; |
1102 | unsigned long r_symndx; | |
1103 | struct elf_link_hash_entry *h; | |
1104 | bfd_vma offset; | |
351f65ca | 1105 | struct elf_x86_64_link_hash_table *htab; |
142411ca L |
1106 | |
1107 | /* Get the section contents. */ | |
1108 | if (contents == NULL) | |
1109 | { | |
1110 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1111 | contents = elf_section_data (sec)->this_hdr.contents; | |
1112 | else | |
1113 | { | |
1114 | /* FIXME: How to better handle error condition? */ | |
1115 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1116 | return FALSE; | |
bffbf940 | 1117 | |
142411ca L |
1118 | /* Cache the section contents for elf_link_input_bfd. */ |
1119 | elf_section_data (sec)->this_hdr.contents = contents; | |
1120 | } | |
1121 | } | |
1122 | ||
351f65ca | 1123 | htab = elf_x86_64_hash_table (info); |
142411ca | 1124 | offset = rel->r_offset; |
bffbf940 | 1125 | switch (r_type) |
142411ca L |
1126 | { |
1127 | case R_X86_64_TLSGD: | |
1128 | case R_X86_64_TLSLD: | |
1129 | if ((rel + 1) >= relend) | |
1130 | return FALSE; | |
1131 | ||
1132 | if (r_type == R_X86_64_TLSGD) | |
1133 | { | |
52bc799a | 1134 | /* Check transition from GD access model. For 64bit, only |
142411ca L |
1135 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
1136 | .word 0x6666; rex64; call __tls_get_addr | |
52bc799a L |
1137 | can transit to different access model. For 32bit, only |
1138 | leaq foo@tlsgd(%rip), %rdi | |
1139 | .word 0x6666; rex64; call __tls_get_addr | |
142411ca L |
1140 | can transit to different access model. */ |
1141 | ||
fa289a5f AM |
1142 | static const unsigned char call[] = { 0x66, 0x66, 0x48, 0xe8 }; |
1143 | static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d }; | |
1144 | ||
52bc799a | 1145 | if ((offset + 12) > sec->size |
fa289a5f | 1146 | || memcmp (contents + offset + 4, call, 4) != 0) |
142411ca | 1147 | return FALSE; |
52bc799a L |
1148 | |
1149 | if (ABI_64_P (abfd)) | |
1150 | { | |
52bc799a | 1151 | if (offset < 4 |
fa289a5f | 1152 | || memcmp (contents + offset - 4, leaq, 4) != 0) |
52bc799a L |
1153 | return FALSE; |
1154 | } | |
1155 | else | |
1156 | { | |
52bc799a | 1157 | if (offset < 3 |
fa289a5f | 1158 | || memcmp (contents + offset - 3, leaq + 1, 3) != 0) |
52bc799a L |
1159 | return FALSE; |
1160 | } | |
142411ca L |
1161 | } |
1162 | else | |
1163 | { | |
1164 | /* Check transition from LD access model. Only | |
1165 | leaq foo@tlsld(%rip), %rdi; | |
1166 | call __tls_get_addr | |
1167 | can transit to different access model. */ | |
1168 | ||
fa289a5f | 1169 | static const unsigned char lea[] = { 0x48, 0x8d, 0x3d }; |
142411ca L |
1170 | |
1171 | if (offset < 3 || (offset + 9) > sec->size) | |
1172 | return FALSE; | |
1173 | ||
fa289a5f AM |
1174 | if (memcmp (contents + offset - 3, lea, 3) != 0 |
1175 | || 0xe8 != *(contents + offset + 4)) | |
142411ca L |
1176 | return FALSE; |
1177 | } | |
1178 | ||
351f65ca | 1179 | r_symndx = htab->r_sym (rel[1].r_info); |
142411ca L |
1180 | if (r_symndx < symtab_hdr->sh_info) |
1181 | return FALSE; | |
1182 | ||
1183 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
c4fb387b | 1184 | /* Use strncmp to check __tls_get_addr since __tls_get_addr |
eed180f8 | 1185 | may be versioned. */ |
142411ca L |
1186 | return (h != NULL |
1187 | && h->root.root.string != NULL | |
351f65ca L |
1188 | && (ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PC32 |
1189 | || ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLT32) | |
c4fb387b L |
1190 | && (strncmp (h->root.root.string, |
1191 | "__tls_get_addr", 14) == 0)); | |
142411ca L |
1192 | |
1193 | case R_X86_64_GOTTPOFF: | |
1194 | /* Check transition from IE access model: | |
4a4c5f25 L |
1195 | mov foo@gottpoff(%rip), %reg |
1196 | add foo@gottpoff(%rip), %reg | |
142411ca L |
1197 | */ |
1198 | ||
4a4c5f25 L |
1199 | /* Check REX prefix first. */ |
1200 | if (offset >= 3 && (offset + 4) <= sec->size) | |
1201 | { | |
1202 | val = bfd_get_8 (abfd, contents + offset - 3); | |
1203 | if (val != 0x48 && val != 0x4c) | |
1204 | { | |
1205 | /* X32 may have 0x44 REX prefix or no REX prefix. */ | |
1206 | if (ABI_64_P (abfd)) | |
1207 | return FALSE; | |
1208 | } | |
1209 | } | |
1210 | else | |
1211 | { | |
1212 | /* X32 may not have any REX prefix. */ | |
1213 | if (ABI_64_P (abfd)) | |
1214 | return FALSE; | |
1215 | if (offset < 2 || (offset + 3) > sec->size) | |
1216 | return FALSE; | |
1217 | } | |
142411ca L |
1218 | |
1219 | val = bfd_get_8 (abfd, contents + offset - 2); | |
1220 | if (val != 0x8b && val != 0x03) | |
1221 | return FALSE; | |
1222 | ||
1223 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1224 | return (val & 0xc7) == 5; | |
1225 | ||
1226 | case R_X86_64_GOTPC32_TLSDESC: | |
1227 | /* Check transition from GDesc access model: | |
1228 | leaq x@tlsdesc(%rip), %rax | |
1229 | ||
1230 | Make sure it's a leaq adding rip to a 32-bit offset | |
1231 | into any register, although it's probably almost always | |
1232 | going to be rax. */ | |
1233 | ||
1234 | if (offset < 3 || (offset + 4) > sec->size) | |
1235 | return FALSE; | |
1236 | ||
1237 | val = bfd_get_8 (abfd, contents + offset - 3); | |
1238 | if ((val & 0xfb) != 0x48) | |
1239 | return FALSE; | |
1240 | ||
1241 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1242 | return FALSE; | |
1243 | ||
1244 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1245 | return (val & 0xc7) == 0x05; | |
1246 | ||
1247 | case R_X86_64_TLSDESC_CALL: | |
1248 | /* Check transition from GDesc access model: | |
1249 | call *x@tlsdesc(%rax) | |
1250 | */ | |
1251 | if (offset + 2 <= sec->size) | |
1252 | { | |
1253 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
fa289a5f AM |
1254 | static const unsigned char call[] = { 0xff, 0x10 }; |
1255 | return memcmp (contents + offset, call, 2) == 0; | |
142411ca L |
1256 | } |
1257 | ||
1258 | return FALSE; | |
1259 | ||
1260 | default: | |
1261 | abort (); | |
1262 | } | |
1263 | } | |
1264 | ||
1265 | /* Return TRUE if the TLS access transition is OK or no transition | |
1266 | will be performed. Update R_TYPE if there is a transition. */ | |
1267 | ||
1268 | static bfd_boolean | |
351f65ca L |
1269 | elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd, |
1270 | asection *sec, bfd_byte *contents, | |
1271 | Elf_Internal_Shdr *symtab_hdr, | |
1272 | struct elf_link_hash_entry **sym_hashes, | |
1273 | unsigned int *r_type, int tls_type, | |
1274 | const Elf_Internal_Rela *rel, | |
1275 | const Elf_Internal_Rela *relend, | |
1276 | struct elf_link_hash_entry *h, | |
1277 | unsigned long r_symndx) | |
142411ca L |
1278 | { |
1279 | unsigned int from_type = *r_type; | |
1280 | unsigned int to_type = from_type; | |
1281 | bfd_boolean check = TRUE; | |
1282 | ||
bb1cb422 L |
1283 | /* Skip TLS transition for functions. */ |
1284 | if (h != NULL | |
1285 | && (h->type == STT_FUNC | |
1286 | || h->type == STT_GNU_IFUNC)) | |
1287 | return TRUE; | |
1288 | ||
142411ca | 1289 | switch (from_type) |
bffbf940 JJ |
1290 | { |
1291 | case R_X86_64_TLSGD: | |
67a4f2b7 AO |
1292 | case R_X86_64_GOTPC32_TLSDESC: |
1293 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 1294 | case R_X86_64_GOTTPOFF: |
1d85728f | 1295 | if (info->executable) |
142411ca L |
1296 | { |
1297 | if (h == NULL) | |
1298 | to_type = R_X86_64_TPOFF32; | |
1299 | else | |
1300 | to_type = R_X86_64_GOTTPOFF; | |
1301 | } | |
1302 | ||
351f65ca | 1303 | /* When we are called from elf_x86_64_relocate_section, |
142411ca L |
1304 | CONTENTS isn't NULL and there may be additional transitions |
1305 | based on TLS_TYPE. */ | |
1306 | if (contents != NULL) | |
1307 | { | |
1308 | unsigned int new_to_type = to_type; | |
1309 | ||
1d85728f | 1310 | if (info->executable |
142411ca L |
1311 | && h != NULL |
1312 | && h->dynindx == -1 | |
1313 | && tls_type == GOT_TLS_IE) | |
1314 | new_to_type = R_X86_64_TPOFF32; | |
1315 | ||
1316 | if (to_type == R_X86_64_TLSGD | |
1317 | || to_type == R_X86_64_GOTPC32_TLSDESC | |
1318 | || to_type == R_X86_64_TLSDESC_CALL) | |
1319 | { | |
1320 | if (tls_type == GOT_TLS_IE) | |
1321 | new_to_type = R_X86_64_GOTTPOFF; | |
1322 | } | |
1323 | ||
1324 | /* We checked the transition before when we were called from | |
351f65ca | 1325 | elf_x86_64_check_relocs. We only want to check the new |
142411ca L |
1326 | transition which hasn't been checked before. */ |
1327 | check = new_to_type != to_type && from_type == to_type; | |
1328 | to_type = new_to_type; | |
1329 | } | |
1330 | ||
1331 | break; | |
1332 | ||
bffbf940 | 1333 | case R_X86_64_TLSLD: |
1d85728f | 1334 | if (info->executable) |
142411ca L |
1335 | to_type = R_X86_64_TPOFF32; |
1336 | break; | |
1337 | ||
1338 | default: | |
1339 | return TRUE; | |
bffbf940 JJ |
1340 | } |
1341 | ||
142411ca L |
1342 | /* Return TRUE if there is no transition. */ |
1343 | if (from_type == to_type) | |
1344 | return TRUE; | |
1345 | ||
1346 | /* Check if the transition can be performed. */ | |
1347 | if (check | |
351f65ca L |
1348 | && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents, |
1349 | symtab_hdr, sym_hashes, | |
1350 | from_type, rel, relend)) | |
142411ca | 1351 | { |
2f629d23 | 1352 | reloc_howto_type *from, *to; |
4c544807 | 1353 | const char *name; |
142411ca | 1354 | |
351f65ca L |
1355 | from = elf_x86_64_rtype_to_howto (abfd, from_type); |
1356 | to = elf_x86_64_rtype_to_howto (abfd, to_type); | |
142411ca | 1357 | |
4c544807 L |
1358 | if (h) |
1359 | name = h->root.root.string; | |
1360 | else | |
1361 | { | |
351f65ca | 1362 | struct elf_x86_64_link_hash_table *htab; |
4dfe6ac6 | 1363 | |
351f65ca | 1364 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
1365 | if (htab == NULL) |
1366 | name = "*unknown*"; | |
1367 | else | |
1368 | { | |
1369 | Elf_Internal_Sym *isym; | |
1370 | ||
1371 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1372 | abfd, r_symndx); | |
1373 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1374 | } | |
4c544807 L |
1375 | } |
1376 | ||
142411ca L |
1377 | (*_bfd_error_handler) |
1378 | (_("%B: TLS transition from %s to %s against `%s' at 0x%lx " | |
1379 | "in section `%A' failed"), | |
4c544807 | 1380 | abfd, sec, from->name, to->name, name, |
142411ca L |
1381 | (unsigned long) rel->r_offset); |
1382 | bfd_set_error (bfd_error_bad_value); | |
1383 | return FALSE; | |
1384 | } | |
1385 | ||
1386 | *r_type = to_type; | |
1387 | return TRUE; | |
bffbf940 JJ |
1388 | } |
1389 | ||
70256ad8 | 1390 | /* Look through the relocs for a section during the first phase, and |
c434dee6 AJ |
1391 | calculate needed space in the global offset table, procedure |
1392 | linkage table, and dynamic reloc sections. */ | |
70256ad8 | 1393 | |
b34976b6 | 1394 | static bfd_boolean |
351f65ca L |
1395 | elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1396 | asection *sec, | |
1397 | const Elf_Internal_Rela *relocs) | |
70256ad8 | 1398 | { |
351f65ca | 1399 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
1400 | Elf_Internal_Shdr *symtab_hdr; |
1401 | struct elf_link_hash_entry **sym_hashes; | |
70256ad8 AJ |
1402 | const Elf_Internal_Rela *rel; |
1403 | const Elf_Internal_Rela *rel_end; | |
70256ad8 AJ |
1404 | asection *sreloc; |
1405 | ||
1049f94e | 1406 | if (info->relocatable) |
b34976b6 | 1407 | return TRUE; |
70256ad8 | 1408 | |
0ffa91dd NC |
1409 | BFD_ASSERT (is_x86_64_elf (abfd)); |
1410 | ||
351f65ca | 1411 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
1412 | if (htab == NULL) |
1413 | return FALSE; | |
1414 | ||
0ffa91dd | 1415 | symtab_hdr = &elf_symtab_hdr (abfd); |
70256ad8 | 1416 | sym_hashes = elf_sym_hashes (abfd); |
70256ad8 | 1417 | |
c434dee6 | 1418 | sreloc = NULL; |
cbe950e9 | 1419 | |
70256ad8 AJ |
1420 | rel_end = relocs + sec->reloc_count; |
1421 | for (rel = relocs; rel < rel_end; rel++) | |
1422 | { | |
bffbf940 | 1423 | unsigned int r_type; |
70256ad8 AJ |
1424 | unsigned long r_symndx; |
1425 | struct elf_link_hash_entry *h; | |
4c544807 L |
1426 | Elf_Internal_Sym *isym; |
1427 | const char *name; | |
70256ad8 | 1428 | |
351f65ca L |
1429 | r_symndx = htab->r_sym (rel->r_info); |
1430 | r_type = ELF32_R_TYPE (rel->r_info); | |
c434dee6 AJ |
1431 | |
1432 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
1433 | { | |
d003868e AM |
1434 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1435 | abfd, r_symndx); | |
b34976b6 | 1436 | return FALSE; |
c434dee6 AJ |
1437 | } |
1438 | ||
70256ad8 | 1439 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1440 | { |
1441 | /* A local symbol. */ | |
c2e61a4e L |
1442 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1443 | abfd, r_symndx); | |
1444 | if (isym == NULL) | |
1445 | return FALSE; | |
c25bc9fc L |
1446 | |
1447 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
351f65ca | 1448 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c25bc9fc | 1449 | { |
351f65ca L |
1450 | h = elf_x86_64_get_local_sym_hash (htab, abfd, rel, |
1451 | TRUE); | |
c25bc9fc | 1452 | if (h == NULL) |
c2e61a4e | 1453 | return FALSE; |
6bbec505 | 1454 | |
c25bc9fc L |
1455 | /* Fake a STT_GNU_IFUNC symbol. */ |
1456 | h->type = STT_GNU_IFUNC; | |
1457 | h->def_regular = 1; | |
1458 | h->ref_regular = 1; | |
1459 | h->forced_local = 1; | |
1460 | h->root.type = bfd_link_hash_defined; | |
1461 | } | |
1462 | else | |
1463 | h = NULL; | |
1464 | } | |
70256ad8 | 1465 | else |
71cb9464 | 1466 | { |
4c544807 | 1467 | isym = NULL; |
71cb9464 L |
1468 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1469 | while (h->root.type == bfd_link_hash_indirect | |
1470 | || h->root.type == bfd_link_hash_warning) | |
1471 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c25bc9fc | 1472 | } |
cbe950e9 | 1473 | |
d1534d16 L |
1474 | /* Check invalid x32 relocations. */ |
1475 | if (!ABI_64_P (abfd)) | |
1476 | switch (r_type) | |
1477 | { | |
1478 | default: | |
1479 | break; | |
1480 | ||
d1534d16 L |
1481 | case R_X86_64_DTPOFF64: |
1482 | case R_X86_64_TPOFF64: | |
1483 | case R_X86_64_PC64: | |
1484 | case R_X86_64_GOTOFF64: | |
1485 | case R_X86_64_GOT64: | |
1486 | case R_X86_64_GOTPCREL64: | |
1487 | case R_X86_64_GOTPC64: | |
1488 | case R_X86_64_GOTPLT64: | |
1489 | case R_X86_64_PLTOFF64: | |
1490 | { | |
1491 | if (h) | |
1492 | name = h->root.root.string; | |
1493 | else | |
1494 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1495 | NULL); | |
1496 | (*_bfd_error_handler) | |
1497 | (_("%B: relocation %s against symbol `%s' isn't " | |
1498 | "supported in x32 mode"), abfd, | |
1499 | x86_64_elf_howto_table[r_type].name, name); | |
1500 | bfd_set_error (bfd_error_bad_value); | |
1501 | return FALSE; | |
1502 | } | |
1503 | break; | |
1504 | } | |
1505 | ||
c25bc9fc L |
1506 | if (h != NULL) |
1507 | { | |
cbe950e9 L |
1508 | /* Create the ifunc sections for static executables. If we |
1509 | never see an indirect function symbol nor we are building | |
1510 | a static executable, those sections will be empty and | |
1511 | won't appear in output. */ | |
1512 | switch (r_type) | |
1513 | { | |
1514 | default: | |
1515 | break; | |
1516 | ||
1517 | case R_X86_64_32S: | |
1518 | case R_X86_64_32: | |
1519 | case R_X86_64_64: | |
1520 | case R_X86_64_PC32: | |
1521 | case R_X86_64_PC64: | |
1522 | case R_X86_64_PLT32: | |
1523 | case R_X86_64_GOTPCREL: | |
1524 | case R_X86_64_GOTPCREL64: | |
9d4057ee AM |
1525 | if (htab->elf.dynobj == NULL) |
1526 | htab->elf.dynobj = abfd; | |
1527 | if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
c2e61a4e | 1528 | return FALSE; |
cbe950e9 L |
1529 | break; |
1530 | } | |
1531 | ||
1532 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle | |
1533 | it here if it is defined in a non-shared object. */ | |
1534 | if (h->type == STT_GNU_IFUNC | |
1535 | && h->def_regular) | |
1536 | { | |
1537 | /* It is referenced by a non-shared object. */ | |
1538 | h->ref_regular = 1; | |
7ae26bc1 | 1539 | h->needs_plt = 1; |
6bbec505 | 1540 | |
cbe950e9 L |
1541 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1542 | h->plt.refcount += 1; | |
1543 | ||
1544 | /* STT_GNU_IFUNC needs dynamic sections. */ | |
1545 | if (htab->elf.dynobj == NULL) | |
1546 | htab->elf.dynobj = abfd; | |
1547 | ||
1548 | switch (r_type) | |
1549 | { | |
048cbda4 | 1550 | default: |
4c544807 L |
1551 | if (h->root.root.string) |
1552 | name = h->root.root.string; | |
1553 | else | |
1554 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1555 | NULL); | |
048cbda4 L |
1556 | (*_bfd_error_handler) |
1557 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
1558 | "symbol `%s' isn't handled by %s"), abfd, | |
1559 | x86_64_elf_howto_table[r_type].name, | |
4c544807 | 1560 | name, __FUNCTION__); |
048cbda4 | 1561 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1562 | return FALSE; |
cbe950e9 | 1563 | |
248775ba L |
1564 | case R_X86_64_32: |
1565 | if (ABI_64_P (abfd)) | |
1566 | goto not_pointer; | |
710ab287 L |
1567 | case R_X86_64_64: |
1568 | h->non_got_ref = 1; | |
1569 | h->pointer_equality_needed = 1; | |
1570 | if (info->shared) | |
1571 | { | |
710ab287 L |
1572 | /* We must copy these reloc types into the output |
1573 | file. Create a reloc section in dynobj and | |
1574 | make room for this reloc. */ | |
e03a8ed8 L |
1575 | sreloc = _bfd_elf_create_ifunc_dyn_reloc |
1576 | (abfd, info, sec, sreloc, | |
351f65ca | 1577 | &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs); |
710ab287 | 1578 | if (sreloc == NULL) |
c2e61a4e | 1579 | return FALSE; |
710ab287 L |
1580 | } |
1581 | break; | |
1582 | ||
cbe950e9 | 1583 | case R_X86_64_32S: |
cbe950e9 L |
1584 | case R_X86_64_PC32: |
1585 | case R_X86_64_PC64: | |
248775ba | 1586 | not_pointer: |
cbe950e9 L |
1587 | h->non_got_ref = 1; |
1588 | if (r_type != R_X86_64_PC32 | |
1589 | && r_type != R_X86_64_PC64) | |
1590 | h->pointer_equality_needed = 1; | |
1591 | break; | |
1592 | ||
1593 | case R_X86_64_PLT32: | |
1594 | break; | |
1595 | ||
1596 | case R_X86_64_GOTPCREL: | |
1597 | case R_X86_64_GOTPCREL64: | |
7afd84dc | 1598 | h->got.refcount += 1; |
6de2ae4a L |
1599 | if (htab->elf.sgot == NULL |
1600 | && !_bfd_elf_create_got_section (htab->elf.dynobj, | |
1601 | info)) | |
c2e61a4e | 1602 | return FALSE; |
cbe950e9 L |
1603 | break; |
1604 | } | |
1605 | ||
1606 | continue; | |
1607 | } | |
71cb9464 | 1608 | } |
70256ad8 | 1609 | |
351f65ca L |
1610 | if (! elf_x86_64_tls_transition (info, abfd, sec, NULL, |
1611 | symtab_hdr, sym_hashes, | |
1612 | &r_type, GOT_UNKNOWN, | |
1613 | rel, rel_end, h, r_symndx)) | |
c2e61a4e | 1614 | return FALSE; |
142411ca | 1615 | |
bffbf940 | 1616 | switch (r_type) |
70256ad8 | 1617 | { |
bffbf940 JJ |
1618 | case R_X86_64_TLSLD: |
1619 | htab->tls_ld_got.refcount += 1; | |
1620 | goto create_got; | |
1621 | ||
1622 | case R_X86_64_TPOFF32: | |
351f65ca | 1623 | if (!info->executable && ABI_64_P (abfd)) |
70256ad8 | 1624 | { |
09a24cbf | 1625 | if (h) |
4c544807 L |
1626 | name = h->root.root.string; |
1627 | else | |
1628 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1629 | NULL); | |
bffbf940 | 1630 | (*_bfd_error_handler) |
d003868e AM |
1631 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
1632 | abfd, | |
4c544807 | 1633 | x86_64_elf_howto_table[r_type].name, name); |
bffbf940 | 1634 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1635 | return FALSE; |
70256ad8 | 1636 | } |
bffbf940 | 1637 | break; |
c434dee6 | 1638 | |
bffbf940 | 1639 | case R_X86_64_GOTTPOFF: |
1d85728f | 1640 | if (!info->executable) |
bffbf940 JJ |
1641 | info->flags |= DF_STATIC_TLS; |
1642 | /* Fall through */ | |
70256ad8 | 1643 | |
bffbf940 JJ |
1644 | case R_X86_64_GOT32: |
1645 | case R_X86_64_GOTPCREL: | |
1646 | case R_X86_64_TLSGD: | |
7b81dfbb AJ |
1647 | case R_X86_64_GOT64: |
1648 | case R_X86_64_GOTPCREL64: | |
1649 | case R_X86_64_GOTPLT64: | |
67a4f2b7 AO |
1650 | case R_X86_64_GOTPC32_TLSDESC: |
1651 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 JJ |
1652 | /* This symbol requires a global offset table entry. */ |
1653 | { | |
1654 | int tls_type, old_tls_type; | |
1655 | ||
1656 | switch (r_type) | |
1657 | { | |
1658 | default: tls_type = GOT_NORMAL; break; | |
1659 | case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break; | |
1660 | case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break; | |
67a4f2b7 AO |
1661 | case R_X86_64_GOTPC32_TLSDESC: |
1662 | case R_X86_64_TLSDESC_CALL: | |
1663 | tls_type = GOT_TLS_GDESC; break; | |
bffbf940 JJ |
1664 | } |
1665 | ||
1666 | if (h != NULL) | |
1667 | { | |
7b81dfbb AJ |
1668 | if (r_type == R_X86_64_GOTPLT64) |
1669 | { | |
1670 | /* This relocation indicates that we also need | |
1671 | a PLT entry, as this is a function. We don't need | |
1672 | a PLT entry for local symbols. */ | |
1673 | h->needs_plt = 1; | |
1674 | h->plt.refcount += 1; | |
1675 | } | |
bffbf940 | 1676 | h->got.refcount += 1; |
351f65ca | 1677 | old_tls_type = elf_x86_64_hash_entry (h)->tls_type; |
bffbf940 JJ |
1678 | } |
1679 | else | |
1680 | { | |
1681 | bfd_signed_vma *local_got_refcounts; | |
1682 | ||
1683 | /* This is a global offset table entry for a local symbol. */ | |
1684 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1685 | if (local_got_refcounts == NULL) | |
1686 | { | |
1687 | bfd_size_type size; | |
1688 | ||
1689 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1690 | size *= sizeof (bfd_signed_vma) |
1691 | + sizeof (bfd_vma) + sizeof (char); | |
bffbf940 JJ |
1692 | local_got_refcounts = ((bfd_signed_vma *) |
1693 | bfd_zalloc (abfd, size)); | |
1694 | if (local_got_refcounts == NULL) | |
c2e61a4e | 1695 | return FALSE; |
bffbf940 | 1696 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
351f65ca | 1697 | elf_x86_64_local_tlsdesc_gotent (abfd) |
67a4f2b7 | 1698 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); |
351f65ca | 1699 | elf_x86_64_local_got_tls_type (abfd) |
67a4f2b7 | 1700 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
bffbf940 JJ |
1701 | } |
1702 | local_got_refcounts[r_symndx] += 1; | |
1703 | old_tls_type | |
351f65ca | 1704 | = elf_x86_64_local_got_tls_type (abfd) [r_symndx]; |
bffbf940 JJ |
1705 | } |
1706 | ||
1707 | /* If a TLS symbol is accessed using IE at least once, | |
1708 | there is no point to use dynamic model for it. */ | |
1709 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN | |
67a4f2b7 AO |
1710 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
1711 | || tls_type != GOT_TLS_IE)) | |
bffbf940 | 1712 | { |
67a4f2b7 | 1713 | if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type)) |
bffbf940 | 1714 | tls_type = old_tls_type; |
67a4f2b7 AO |
1715 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1716 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1717 | tls_type |= old_tls_type; | |
bffbf940 JJ |
1718 | else |
1719 | { | |
09a24cbf | 1720 | if (h) |
4c544807 L |
1721 | name = h->root.root.string; |
1722 | else | |
1723 | name = bfd_elf_sym_name (abfd, symtab_hdr, | |
1724 | isym, NULL); | |
bffbf940 | 1725 | (*_bfd_error_handler) |
1f7a4e42 | 1726 | (_("%B: '%s' accessed both as normal and thread local symbol"), |
4c544807 | 1727 | abfd, name); |
c2e61a4e | 1728 | return FALSE; |
bffbf940 JJ |
1729 | } |
1730 | } | |
1731 | ||
1732 | if (old_tls_type != tls_type) | |
1733 | { | |
1734 | if (h != NULL) | |
351f65ca | 1735 | elf_x86_64_hash_entry (h)->tls_type = tls_type; |
bffbf940 | 1736 | else |
351f65ca | 1737 | elf_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type; |
bffbf940 JJ |
1738 | } |
1739 | } | |
c434dee6 AJ |
1740 | /* Fall through */ |
1741 | ||
d6ab8113 JB |
1742 | case R_X86_64_GOTOFF64: |
1743 | case R_X86_64_GOTPC32: | |
7b81dfbb | 1744 | case R_X86_64_GOTPC64: |
bffbf940 | 1745 | create_got: |
6de2ae4a | 1746 | if (htab->elf.sgot == NULL) |
c434dee6 AJ |
1747 | { |
1748 | if (htab->elf.dynobj == NULL) | |
1749 | htab->elf.dynobj = abfd; | |
6de2ae4a L |
1750 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, |
1751 | info)) | |
c2e61a4e | 1752 | return FALSE; |
c434dee6 | 1753 | } |
70256ad8 AJ |
1754 | break; |
1755 | ||
1756 | case R_X86_64_PLT32: | |
1757 | /* This symbol requires a procedure linkage table entry. We | |
407443a3 AJ |
1758 | actually build the entry in adjust_dynamic_symbol, |
1759 | because this might be a case of linking PIC code which is | |
1760 | never referenced by a dynamic object, in which case we | |
1761 | don't need to generate a procedure linkage table entry | |
1762 | after all. */ | |
70256ad8 AJ |
1763 | |
1764 | /* If this is a local symbol, we resolve it directly without | |
407443a3 | 1765 | creating a procedure linkage table entry. */ |
70256ad8 AJ |
1766 | if (h == NULL) |
1767 | continue; | |
1768 | ||
f5385ebf | 1769 | h->needs_plt = 1; |
51b64d56 | 1770 | h->plt.refcount += 1; |
70256ad8 AJ |
1771 | break; |
1772 | ||
7b81dfbb AJ |
1773 | case R_X86_64_PLTOFF64: |
1774 | /* This tries to form the 'address' of a function relative | |
1775 | to GOT. For global symbols we need a PLT entry. */ | |
1776 | if (h != NULL) | |
1777 | { | |
1778 | h->needs_plt = 1; | |
1779 | h->plt.refcount += 1; | |
1780 | } | |
1781 | goto create_got; | |
1782 | ||
248775ba L |
1783 | case R_X86_64_32: |
1784 | if (!ABI_64_P (abfd)) | |
1785 | goto pointer; | |
cc78d0af AJ |
1786 | case R_X86_64_8: |
1787 | case R_X86_64_16: | |
70256ad8 | 1788 | case R_X86_64_32S: |
1b71fb54 AJ |
1789 | /* Let's help debug shared library creation. These relocs |
1790 | cannot be used in shared libs. Don't error out for | |
1791 | sections we don't care about, such as debug sections or | |
1792 | non-constant sections. */ | |
1793 | if (info->shared | |
1794 | && (sec->flags & SEC_ALLOC) != 0 | |
1795 | && (sec->flags & SEC_READONLY) != 0) | |
1796 | { | |
09a24cbf | 1797 | if (h) |
4c544807 L |
1798 | name = h->root.root.string; |
1799 | else | |
1800 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1b71fb54 | 1801 | (*_bfd_error_handler) |
d003868e | 1802 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
4c544807 | 1803 | abfd, x86_64_elf_howto_table[r_type].name, name); |
1b71fb54 | 1804 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1805 | return FALSE; |
1b71fb54 AJ |
1806 | } |
1807 | /* Fall through. */ | |
1808 | ||
c434dee6 AJ |
1809 | case R_X86_64_PC8: |
1810 | case R_X86_64_PC16: | |
70256ad8 | 1811 | case R_X86_64_PC32: |
d6ab8113 | 1812 | case R_X86_64_PC64: |
1b71fb54 | 1813 | case R_X86_64_64: |
248775ba | 1814 | pointer: |
710ab287 | 1815 | if (h != NULL && info->executable) |
c434dee6 AJ |
1816 | { |
1817 | /* If this reloc is in a read-only section, we might | |
1818 | need a copy reloc. We can't check reliably at this | |
1819 | stage whether the section is read-only, as input | |
1820 | sections have not yet been mapped to output sections. | |
1821 | Tentatively set the flag for now, and correct in | |
1822 | adjust_dynamic_symbol. */ | |
f5385ebf | 1823 | h->non_got_ref = 1; |
c434dee6 AJ |
1824 | |
1825 | /* We may need a .plt entry if the function this reloc | |
1826 | refers to is in a shared lib. */ | |
1827 | h->plt.refcount += 1; | |
d6ab8113 | 1828 | if (r_type != R_X86_64_PC32 && r_type != R_X86_64_PC64) |
f5385ebf | 1829 | h->pointer_equality_needed = 1; |
c434dee6 | 1830 | } |
70256ad8 AJ |
1831 | |
1832 | /* If we are creating a shared library, and this is a reloc | |
1833 | against a global symbol, or a non PC relative reloc | |
1834 | against a local symbol, then we need to copy the reloc | |
1835 | into the shared library. However, if we are linking with | |
1836 | -Bsymbolic, we do not need to copy a reloc against a | |
1837 | global symbol which is defined in an object we are | |
407443a3 | 1838 | including in the link (i.e., DEF_REGULAR is set). At |
70256ad8 AJ |
1839 | this point we have not seen all the input files, so it is |
1840 | possible that DEF_REGULAR is not set now but will be set | |
c434dee6 AJ |
1841 | later (it is never cleared). In case of a weak definition, |
1842 | DEF_REGULAR may be cleared later by a strong definition in | |
1843 | a shared library. We account for that possibility below by | |
1844 | storing information in the relocs_copied field of the hash | |
1845 | table entry. A similar situation occurs when creating | |
1846 | shared libraries and symbol visibility changes render the | |
1847 | symbol local. | |
1848 | ||
1849 | If on the other hand, we are creating an executable, we | |
1850 | may need to keep relocations for symbols satisfied by a | |
1851 | dynamic library if we manage to avoid copy relocs for the | |
0f88be7a | 1852 | symbol. */ |
c434dee6 AJ |
1853 | if ((info->shared |
1854 | && (sec->flags & SEC_ALLOC) != 0 | |
d8045f23 | 1855 | && (! IS_X86_64_PCREL_TYPE (r_type) |
c434dee6 | 1856 | || (h != NULL |
55255dae | 1857 | && (! SYMBOLIC_BIND (info, h) |
c434dee6 | 1858 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1859 | || !h->def_regular)))) |
d40d037c AJ |
1860 | || (ELIMINATE_COPY_RELOCS |
1861 | && !info->shared | |
c434dee6 AJ |
1862 | && (sec->flags & SEC_ALLOC) != 0 |
1863 | && h != NULL | |
1864 | && (h->root.type == bfd_link_hash_defweak | |
0f88be7a | 1865 | || !h->def_regular))) |
70256ad8 | 1866 | { |
e03a8ed8 L |
1867 | struct elf_dyn_relocs *p; |
1868 | struct elf_dyn_relocs **head; | |
c434dee6 AJ |
1869 | |
1870 | /* We must copy these reloc types into the output file. | |
1871 | Create a reloc section in dynobj and make room for | |
1872 | this reloc. */ | |
70256ad8 AJ |
1873 | if (sreloc == NULL) |
1874 | { | |
c434dee6 AJ |
1875 | if (htab->elf.dynobj == NULL) |
1876 | htab->elf.dynobj = abfd; | |
1877 | ||
83bac4b0 | 1878 | sreloc = _bfd_elf_make_dynamic_reloc_section |
82e96e07 L |
1879 | (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2, |
1880 | abfd, /*rela?*/ TRUE); | |
70256ad8 | 1881 | |
70256ad8 | 1882 | if (sreloc == NULL) |
c2e61a4e | 1883 | return FALSE; |
70256ad8 AJ |
1884 | } |
1885 | ||
c434dee6 AJ |
1886 | /* If this is a global symbol, we count the number of |
1887 | relocations we need for this symbol. */ | |
1888 | if (h != NULL) | |
70256ad8 | 1889 | { |
351f65ca | 1890 | head = &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs; |
c434dee6 AJ |
1891 | } |
1892 | else | |
1893 | { | |
1894 | /* Track dynamic relocs needed for local syms too. | |
1895 | We really need local syms available to do this | |
1896 | easily. Oh well. */ | |
c434dee6 | 1897 | asection *s; |
87d72d41 | 1898 | void **vpp; |
87d72d41 AM |
1899 | |
1900 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1901 | abfd, r_symndx); | |
1902 | if (isym == NULL) | |
1903 | return FALSE; | |
1904 | ||
1905 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
c434dee6 | 1906 | if (s == NULL) |
87d72d41 | 1907 | s = sec; |
70256ad8 | 1908 | |
e81d3500 DD |
1909 | /* Beware of type punned pointers vs strict aliasing |
1910 | rules. */ | |
1911 | vpp = &(elf_section_data (s)->local_dynrel); | |
e03a8ed8 | 1912 | head = (struct elf_dyn_relocs **)vpp; |
c434dee6 | 1913 | } |
70256ad8 | 1914 | |
c434dee6 AJ |
1915 | p = *head; |
1916 | if (p == NULL || p->sec != sec) | |
1917 | { | |
1918 | bfd_size_type amt = sizeof *p; | |
d8045f23 | 1919 | |
e03a8ed8 | 1920 | p = ((struct elf_dyn_relocs *) |
c434dee6 | 1921 | bfd_alloc (htab->elf.dynobj, amt)); |
70256ad8 | 1922 | if (p == NULL) |
c2e61a4e | 1923 | return FALSE; |
c434dee6 AJ |
1924 | p->next = *head; |
1925 | *head = p; | |
1926 | p->sec = sec; | |
1927 | p->count = 0; | |
1928 | p->pc_count = 0; | |
70256ad8 | 1929 | } |
c434dee6 AJ |
1930 | |
1931 | p->count += 1; | |
d8045f23 | 1932 | if (IS_X86_64_PCREL_TYPE (r_type)) |
c434dee6 | 1933 | p->pc_count += 1; |
70256ad8 AJ |
1934 | } |
1935 | break; | |
fe4770f4 AJ |
1936 | |
1937 | /* This relocation describes the C++ object vtable hierarchy. | |
1938 | Reconstruct it for later use during GC. */ | |
1939 | case R_X86_64_GNU_VTINHERIT: | |
c152c796 | 1940 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
c2e61a4e | 1941 | return FALSE; |
fe4770f4 AJ |
1942 | break; |
1943 | ||
1944 | /* This relocation describes which C++ vtable entries are actually | |
1945 | used. Record for later use during GC. */ | |
1946 | case R_X86_64_GNU_VTENTRY: | |
d17e0c6e JB |
1947 | BFD_ASSERT (h != NULL); |
1948 | if (h != NULL | |
1949 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
c2e61a4e | 1950 | return FALSE; |
fe4770f4 | 1951 | break; |
c434dee6 AJ |
1952 | |
1953 | default: | |
1954 | break; | |
70256ad8 AJ |
1955 | } |
1956 | } | |
1957 | ||
b34976b6 | 1958 | return TRUE; |
70256ad8 AJ |
1959 | } |
1960 | ||
1961 | /* Return the section that should be marked against GC for a given | |
407443a3 | 1962 | relocation. */ |
70256ad8 AJ |
1963 | |
1964 | static asection * | |
351f65ca L |
1965 | elf_x86_64_gc_mark_hook (asection *sec, |
1966 | struct bfd_link_info *info, | |
1967 | Elf_Internal_Rela *rel, | |
1968 | struct elf_link_hash_entry *h, | |
1969 | Elf_Internal_Sym *sym) | |
70256ad8 AJ |
1970 | { |
1971 | if (h != NULL) | |
351f65ca | 1972 | switch (ELF32_R_TYPE (rel->r_info)) |
07adf181 AM |
1973 | { |
1974 | case R_X86_64_GNU_VTINHERIT: | |
1975 | case R_X86_64_GNU_VTENTRY: | |
1976 | return NULL; | |
1977 | } | |
1978 | ||
1979 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
70256ad8 AJ |
1980 | } |
1981 | ||
407443a3 | 1982 | /* Update the got entry reference counts for the section being removed. */ |
70256ad8 | 1983 | |
b34976b6 | 1984 | static bfd_boolean |
351f65ca L |
1985 | elf_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
1986 | asection *sec, | |
1987 | const Elf_Internal_Rela *relocs) | |
70256ad8 | 1988 | { |
351f65ca | 1989 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
1990 | Elf_Internal_Shdr *symtab_hdr; |
1991 | struct elf_link_hash_entry **sym_hashes; | |
1992 | bfd_signed_vma *local_got_refcounts; | |
1993 | const Elf_Internal_Rela *rel, *relend; | |
c434dee6 | 1994 | |
7dda2462 TG |
1995 | if (info->relocatable) |
1996 | return TRUE; | |
1997 | ||
351f65ca | 1998 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
1999 | if (htab == NULL) |
2000 | return FALSE; | |
2001 | ||
c434dee6 | 2002 | elf_section_data (sec)->local_dynrel = NULL; |
70256ad8 | 2003 | |
0ffa91dd | 2004 | symtab_hdr = &elf_symtab_hdr (abfd); |
70256ad8 AJ |
2005 | sym_hashes = elf_sym_hashes (abfd); |
2006 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
2007 | ||
351f65ca | 2008 | htab = elf_x86_64_hash_table (info); |
70256ad8 AJ |
2009 | relend = relocs + sec->reloc_count; |
2010 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
2011 | { |
2012 | unsigned long r_symndx; | |
2013 | unsigned int r_type; | |
2014 | struct elf_link_hash_entry *h = NULL; | |
70256ad8 | 2015 | |
351f65ca | 2016 | r_symndx = htab->r_sym (rel->r_info); |
26e41594 AM |
2017 | if (r_symndx >= symtab_hdr->sh_info) |
2018 | { | |
26e41594 | 2019 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
2020 | while (h->root.type == bfd_link_hash_indirect |
2021 | || h->root.type == bfd_link_hash_warning) | |
2022 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 2023 | } |
bb1cb422 L |
2024 | else |
2025 | { | |
2026 | /* A local symbol. */ | |
2027 | Elf_Internal_Sym *isym; | |
2028 | ||
2029 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
2030 | abfd, r_symndx); | |
2031 | ||
2032 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
2033 | if (isym != NULL | |
82e96e07 | 2034 | && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
bb1cb422 | 2035 | { |
351f65ca | 2036 | h = elf_x86_64_get_local_sym_hash (htab, abfd, rel, FALSE); |
bb1cb422 L |
2037 | if (h == NULL) |
2038 | abort (); | |
2039 | } | |
2040 | } | |
c434dee6 | 2041 | |
3db2e7dd L |
2042 | if (h) |
2043 | { | |
2044 | struct elf_x86_64_link_hash_entry *eh; | |
2045 | struct elf_dyn_relocs **pp; | |
2046 | struct elf_dyn_relocs *p; | |
2047 | ||
2048 | eh = (struct elf_x86_64_link_hash_entry *) h; | |
2049 | ||
2050 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
2051 | if (p->sec == sec) | |
2052 | { | |
2053 | /* Everything must go for SEC. */ | |
2054 | *pp = p->next; | |
2055 | break; | |
2056 | } | |
2057 | } | |
2058 | ||
351f65ca L |
2059 | r_type = ELF32_R_TYPE (rel->r_info); |
2060 | if (! elf_x86_64_tls_transition (info, abfd, sec, NULL, | |
2061 | symtab_hdr, sym_hashes, | |
2062 | &r_type, GOT_UNKNOWN, | |
2063 | rel, relend, h, r_symndx)) | |
142411ca L |
2064 | return FALSE; |
2065 | ||
26e41594 AM |
2066 | switch (r_type) |
2067 | { | |
2068 | case R_X86_64_TLSLD: | |
4dfe6ac6 NC |
2069 | if (htab->tls_ld_got.refcount > 0) |
2070 | htab->tls_ld_got.refcount -= 1; | |
26e41594 | 2071 | break; |
c434dee6 | 2072 | |
26e41594 | 2073 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
2074 | case R_X86_64_GOTPC32_TLSDESC: |
2075 | case R_X86_64_TLSDESC_CALL: | |
26e41594 AM |
2076 | case R_X86_64_GOTTPOFF: |
2077 | case R_X86_64_GOT32: | |
2078 | case R_X86_64_GOTPCREL: | |
7b81dfbb AJ |
2079 | case R_X86_64_GOT64: |
2080 | case R_X86_64_GOTPCREL64: | |
2081 | case R_X86_64_GOTPLT64: | |
26e41594 AM |
2082 | if (h != NULL) |
2083 | { | |
7b81dfbb | 2084 | if (r_type == R_X86_64_GOTPLT64 && h->plt.refcount > 0) |
eed180f8 | 2085 | h->plt.refcount -= 1; |
26e41594 AM |
2086 | if (h->got.refcount > 0) |
2087 | h->got.refcount -= 1; | |
bb1cb422 L |
2088 | if (h->type == STT_GNU_IFUNC) |
2089 | { | |
2090 | if (h->plt.refcount > 0) | |
2091 | h->plt.refcount -= 1; | |
2092 | } | |
26e41594 AM |
2093 | } |
2094 | else if (local_got_refcounts != NULL) | |
2095 | { | |
2096 | if (local_got_refcounts[r_symndx] > 0) | |
2097 | local_got_refcounts[r_symndx] -= 1; | |
2098 | } | |
2099 | break; | |
c434dee6 | 2100 | |
26e41594 AM |
2101 | case R_X86_64_8: |
2102 | case R_X86_64_16: | |
2103 | case R_X86_64_32: | |
2104 | case R_X86_64_64: | |
2105 | case R_X86_64_32S: | |
2106 | case R_X86_64_PC8: | |
2107 | case R_X86_64_PC16: | |
2108 | case R_X86_64_PC32: | |
d6ab8113 | 2109 | case R_X86_64_PC64: |
3db2e7dd L |
2110 | if (info->shared |
2111 | && (h == NULL || h->type != STT_GNU_IFUNC)) | |
26e41594 AM |
2112 | break; |
2113 | /* Fall thru */ | |
c434dee6 | 2114 | |
26e41594 | 2115 | case R_X86_64_PLT32: |
7b81dfbb | 2116 | case R_X86_64_PLTOFF64: |
26e41594 AM |
2117 | if (h != NULL) |
2118 | { | |
2119 | if (h->plt.refcount > 0) | |
2120 | h->plt.refcount -= 1; | |
2121 | } | |
2122 | break; | |
70256ad8 | 2123 | |
26e41594 AM |
2124 | default: |
2125 | break; | |
2126 | } | |
2127 | } | |
70256ad8 | 2128 | |
b34976b6 | 2129 | return TRUE; |
70256ad8 AJ |
2130 | } |
2131 | ||
2132 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2133 | regular object. The current definition is in some section of the | |
2134 | dynamic object, but we're not including those sections. We have to | |
2135 | change the definition to something the rest of the link can | |
407443a3 | 2136 | understand. */ |
70256ad8 | 2137 | |
b34976b6 | 2138 | static bfd_boolean |
351f65ca L |
2139 | elf_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info, |
2140 | struct elf_link_hash_entry *h) | |
70256ad8 | 2141 | { |
351f65ca | 2142 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 | 2143 | asection *s; |
70256ad8 | 2144 | |
cbe950e9 L |
2145 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
2146 | if (h->type == STT_GNU_IFUNC) | |
2147 | { | |
2148 | if (h->plt.refcount <= 0) | |
2149 | { | |
2150 | h->plt.offset = (bfd_vma) -1; | |
2151 | h->needs_plt = 0; | |
2152 | } | |
2153 | return TRUE; | |
2154 | } | |
2155 | ||
70256ad8 AJ |
2156 | /* If this is a function, put it in the procedure linkage table. We |
2157 | will fill in the contents of the procedure linkage table later, | |
2158 | when we know the address of the .got section. */ | |
2159 | if (h->type == STT_FUNC | |
f5385ebf | 2160 | || h->needs_plt) |
70256ad8 | 2161 | { |
c434dee6 | 2162 | if (h->plt.refcount <= 0 |
27482721 AJ |
2163 | || SYMBOL_CALLS_LOCAL (info, h) |
2164 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
2165 | && h->root.type == bfd_link_hash_undefweak)) | |
70256ad8 | 2166 | { |
70256ad8 AJ |
2167 | /* This case can occur if we saw a PLT32 reloc in an input |
2168 | file, but the symbol was never referred to by a dynamic | |
2169 | object, or if all references were garbage collected. In | |
2170 | such a case, we don't actually need to build a procedure | |
2171 | linkage table, and we can just do a PC32 reloc instead. */ | |
70256ad8 | 2172 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2173 | h->needs_plt = 0; |
70256ad8 AJ |
2174 | } |
2175 | ||
b34976b6 | 2176 | return TRUE; |
70256ad8 | 2177 | } |
bbd7ec4a | 2178 | else |
c434dee6 AJ |
2179 | /* It's possible that we incorrectly decided a .plt reloc was |
2180 | needed for an R_X86_64_PC32 reloc to a non-function sym in | |
2181 | check_relocs. We can't decide accurately between function and | |
2182 | non-function syms in check-relocs; Objects loaded later in | |
2183 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 2184 | h->plt.offset = (bfd_vma) -1; |
70256ad8 AJ |
2185 | |
2186 | /* If this is a weak symbol, and there is a real definition, the | |
2187 | processor independent code will have arranged for us to see the | |
407443a3 | 2188 | real definition first, and we can just use the same value. */ |
f6e332e6 | 2189 | if (h->u.weakdef != NULL) |
70256ad8 | 2190 | { |
f6e332e6 AM |
2191 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2192 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2193 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2194 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
d40d037c | 2195 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 2196 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 2197 | return TRUE; |
70256ad8 AJ |
2198 | } |
2199 | ||
2200 | /* This is a reference to a symbol defined by a dynamic object which | |
407443a3 | 2201 | is not a function. */ |
70256ad8 AJ |
2202 | |
2203 | /* If we are creating a shared library, we must presume that the | |
2204 | only references to the symbol are via the global offset table. | |
2205 | For such cases we need not do anything here; the relocations will | |
407443a3 | 2206 | be handled correctly by relocate_section. */ |
70256ad8 | 2207 | if (info->shared) |
b34976b6 | 2208 | return TRUE; |
70256ad8 AJ |
2209 | |
2210 | /* If there are no references to this symbol that do not use the | |
2211 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 2212 | if (!h->non_got_ref) |
b34976b6 | 2213 | return TRUE; |
70256ad8 | 2214 | |
c434dee6 AJ |
2215 | /* If -z nocopyreloc was given, we won't generate them either. */ |
2216 | if (info->nocopyreloc) | |
2217 | { | |
f5385ebf | 2218 | h->non_got_ref = 0; |
b34976b6 | 2219 | return TRUE; |
c434dee6 AJ |
2220 | } |
2221 | ||
d40d037c | 2222 | if (ELIMINATE_COPY_RELOCS) |
c434dee6 | 2223 | { |
351f65ca | 2224 | struct elf_x86_64_link_hash_entry * eh; |
e03a8ed8 | 2225 | struct elf_dyn_relocs *p; |
c434dee6 | 2226 | |
351f65ca | 2227 | eh = (struct elf_x86_64_link_hash_entry *) h; |
d40d037c AJ |
2228 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
2229 | { | |
2230 | s = p->sec->output_section; | |
2231 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2232 | break; | |
2233 | } | |
2234 | ||
2235 | /* If we didn't find any dynamic relocs in read-only sections, then | |
2236 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
2237 | if (p == NULL) | |
2238 | { | |
f5385ebf | 2239 | h->non_got_ref = 0; |
d40d037c AJ |
2240 | return TRUE; |
2241 | } | |
c434dee6 AJ |
2242 | } |
2243 | ||
70256ad8 | 2244 | /* We must allocate the symbol in our .dynbss section, which will |
407443a3 | 2245 | become part of the .bss section of the executable. There will be |
70256ad8 AJ |
2246 | an entry for this symbol in the .dynsym section. The dynamic |
2247 | object will contain position independent code, so all references | |
2248 | from the dynamic object to this symbol will go through the global | |
2249 | offset table. The dynamic linker will use the .dynsym entry to | |
2250 | determine the address it must put in the global offset table, so | |
2251 | both the dynamic object and the regular object will refer to the | |
2252 | same memory location for the variable. */ | |
2253 | ||
351f65ca | 2254 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2255 | if (htab == NULL) |
2256 | return FALSE; | |
70256ad8 AJ |
2257 | |
2258 | /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker | |
2259 | to copy the initial value out of the dynamic object and into the | |
cedb70c5 | 2260 | runtime process image. */ |
1d7e9d18 | 2261 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
70256ad8 | 2262 | { |
351f65ca L |
2263 | const struct elf_backend_data *bed; |
2264 | bed = get_elf_backend_data (info->output_bfd); | |
2265 | htab->srelbss->size += bed->s->sizeof_rela; | |
f5385ebf | 2266 | h->needs_copy = 1; |
70256ad8 AJ |
2267 | } |
2268 | ||
c434dee6 | 2269 | s = htab->sdynbss; |
70256ad8 | 2270 | |
027297b7 | 2271 | return _bfd_elf_adjust_dynamic_copy (h, s); |
70256ad8 AJ |
2272 | } |
2273 | ||
c434dee6 AJ |
2274 | /* Allocate space in .plt, .got and associated reloc sections for |
2275 | dynamic relocs. */ | |
2276 | ||
b34976b6 | 2277 | static bfd_boolean |
351f65ca | 2278 | elf_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
c434dee6 AJ |
2279 | { |
2280 | struct bfd_link_info *info; | |
351f65ca L |
2281 | struct elf_x86_64_link_hash_table *htab; |
2282 | struct elf_x86_64_link_hash_entry *eh; | |
e03a8ed8 | 2283 | struct elf_dyn_relocs *p; |
351f65ca | 2284 | const struct elf_backend_data *bed; |
eed180f8 | 2285 | unsigned int plt_entry_size; |
c434dee6 | 2286 | |
e92d460e | 2287 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 2288 | return TRUE; |
c434dee6 | 2289 | |
351f65ca | 2290 | eh = (struct elf_x86_64_link_hash_entry *) h; |
e92d460e | 2291 | |
c434dee6 | 2292 | info = (struct bfd_link_info *) inf; |
351f65ca | 2293 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2294 | if (htab == NULL) |
2295 | return FALSE; | |
351f65ca | 2296 | bed = get_elf_backend_data (info->output_bfd); |
eed180f8 | 2297 | plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd); |
c434dee6 | 2298 | |
cbe950e9 L |
2299 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
2300 | here if it is defined and referenced in a non-shared object. */ | |
2301 | if (h->type == STT_GNU_IFUNC | |
2302 | && h->def_regular) | |
e03a8ed8 L |
2303 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, |
2304 | &eh->dyn_relocs, | |
eed180f8 | 2305 | plt_entry_size, |
e03a8ed8 | 2306 | GOT_ENTRY_SIZE); |
cbe950e9 L |
2307 | else if (htab->elf.dynamic_sections_created |
2308 | && h->plt.refcount > 0) | |
c434dee6 AJ |
2309 | { |
2310 | /* Make sure this symbol is output as a dynamic symbol. | |
2311 | Undefined weak syms won't yet be marked as dynamic. */ | |
2312 | if (h->dynindx == -1 | |
f5385ebf | 2313 | && !h->forced_local) |
c434dee6 | 2314 | { |
c152c796 | 2315 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2316 | return FALSE; |
c434dee6 AJ |
2317 | } |
2318 | ||
27482721 AJ |
2319 | if (info->shared |
2320 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
c434dee6 | 2321 | { |
6de2ae4a | 2322 | asection *s = htab->elf.splt; |
c434dee6 AJ |
2323 | |
2324 | /* If this is the first .plt entry, make room for the special | |
2325 | first entry. */ | |
eea6121a | 2326 | if (s->size == 0) |
eed180f8 | 2327 | s->size += plt_entry_size; |
c434dee6 | 2328 | |
eea6121a | 2329 | h->plt.offset = s->size; |
c434dee6 AJ |
2330 | |
2331 | /* If this symbol is not defined in a regular file, and we are | |
2332 | not generating a shared library, then set the symbol to this | |
2333 | location in the .plt. This is required to make function | |
2334 | pointers compare as equal between the normal executable and | |
2335 | the shared library. */ | |
2336 | if (! info->shared | |
f5385ebf | 2337 | && !h->def_regular) |
c434dee6 AJ |
2338 | { |
2339 | h->root.u.def.section = s; | |
2340 | h->root.u.def.value = h->plt.offset; | |
2341 | } | |
2342 | ||
2343 | /* Make room for this entry. */ | |
eed180f8 | 2344 | s->size += plt_entry_size; |
c434dee6 AJ |
2345 | |
2346 | /* We also need to make an entry in the .got.plt section, which | |
2347 | will be placed in the .got section by the linker script. */ | |
6de2ae4a | 2348 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
c434dee6 AJ |
2349 | |
2350 | /* We also need to make an entry in the .rela.plt section. */ | |
351f65ca | 2351 | htab->elf.srelplt->size += bed->s->sizeof_rela; |
6de2ae4a | 2352 | htab->elf.srelplt->reloc_count++; |
c434dee6 AJ |
2353 | } |
2354 | else | |
2355 | { | |
2356 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 2357 | h->needs_plt = 0; |
c434dee6 AJ |
2358 | } |
2359 | } | |
2360 | else | |
2361 | { | |
2362 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 2363 | h->needs_plt = 0; |
c434dee6 AJ |
2364 | } |
2365 | ||
67a4f2b7 AO |
2366 | eh->tlsdesc_got = (bfd_vma) -1; |
2367 | ||
bffbf940 JJ |
2368 | /* If R_X86_64_GOTTPOFF symbol is now local to the binary, |
2369 | make it a R_X86_64_TPOFF32 requiring no GOT entry. */ | |
2370 | if (h->got.refcount > 0 | |
1d85728f | 2371 | && info->executable |
bffbf940 | 2372 | && h->dynindx == -1 |
351f65ca | 2373 | && elf_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE) |
d8045f23 NC |
2374 | { |
2375 | h->got.offset = (bfd_vma) -1; | |
2376 | } | |
bffbf940 | 2377 | else if (h->got.refcount > 0) |
c434dee6 AJ |
2378 | { |
2379 | asection *s; | |
b34976b6 | 2380 | bfd_boolean dyn; |
351f65ca | 2381 | int tls_type = elf_x86_64_hash_entry (h)->tls_type; |
c434dee6 AJ |
2382 | |
2383 | /* Make sure this symbol is output as a dynamic symbol. | |
2384 | Undefined weak syms won't yet be marked as dynamic. */ | |
2385 | if (h->dynindx == -1 | |
f5385ebf | 2386 | && !h->forced_local) |
c434dee6 | 2387 | { |
c152c796 | 2388 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2389 | return FALSE; |
c434dee6 AJ |
2390 | } |
2391 | ||
67a4f2b7 AO |
2392 | if (GOT_TLS_GDESC_P (tls_type)) |
2393 | { | |
6de2ae4a | 2394 | eh->tlsdesc_got = htab->elf.sgotplt->size |
351f65ca | 2395 | - elf_x86_64_compute_jump_table_size (htab); |
6de2ae4a | 2396 | htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE; |
67a4f2b7 AO |
2397 | h->got.offset = (bfd_vma) -2; |
2398 | } | |
2399 | if (! GOT_TLS_GDESC_P (tls_type) | |
2400 | || GOT_TLS_GD_P (tls_type)) | |
2401 | { | |
6de2ae4a | 2402 | s = htab->elf.sgot; |
67a4f2b7 AO |
2403 | h->got.offset = s->size; |
2404 | s->size += GOT_ENTRY_SIZE; | |
2405 | if (GOT_TLS_GD_P (tls_type)) | |
2406 | s->size += GOT_ENTRY_SIZE; | |
2407 | } | |
c434dee6 | 2408 | dyn = htab->elf.dynamic_sections_created; |
bffbf940 JJ |
2409 | /* R_X86_64_TLSGD needs one dynamic relocation if local symbol |
2410 | and two if global. | |
2411 | R_X86_64_GOTTPOFF needs one dynamic relocation. */ | |
67a4f2b7 | 2412 | if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
bffbf940 | 2413 | || tls_type == GOT_TLS_IE) |
351f65ca | 2414 | htab->elf.srelgot->size += bed->s->sizeof_rela; |
67a4f2b7 | 2415 | else if (GOT_TLS_GD_P (tls_type)) |
351f65ca | 2416 | htab->elf.srelgot->size += 2 * bed->s->sizeof_rela; |
67a4f2b7 AO |
2417 | else if (! GOT_TLS_GDESC_P (tls_type) |
2418 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2419 | || h->root.type != bfd_link_hash_undefweak) | |
27482721 AJ |
2420 | && (info->shared |
2421 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
351f65ca | 2422 | htab->elf.srelgot->size += bed->s->sizeof_rela; |
67a4f2b7 AO |
2423 | if (GOT_TLS_GDESC_P (tls_type)) |
2424 | { | |
351f65ca | 2425 | htab->elf.srelplt->size += bed->s->sizeof_rela; |
67a4f2b7 AO |
2426 | htab->tlsdesc_plt = (bfd_vma) -1; |
2427 | } | |
c434dee6 AJ |
2428 | } |
2429 | else | |
2430 | h->got.offset = (bfd_vma) -1; | |
2431 | ||
c434dee6 | 2432 | if (eh->dyn_relocs == NULL) |
b34976b6 | 2433 | return TRUE; |
c434dee6 AJ |
2434 | |
2435 | /* In the shared -Bsymbolic case, discard space allocated for | |
2436 | dynamic pc-relative relocs against symbols which turn out to be | |
2437 | defined in regular objects. For the normal shared case, discard | |
2438 | space for pc-relative relocs that have become local due to symbol | |
2439 | visibility changes. */ | |
2440 | ||
2441 | if (info->shared) | |
2442 | { | |
27482721 AJ |
2443 | /* Relocs that use pc_count are those that appear on a call |
2444 | insn, or certain REL relocs that can generated via assembly. | |
2445 | We want calls to protected symbols to resolve directly to the | |
2446 | function rather than going via the plt. If people want | |
2447 | function pointer comparisons to work as expected then they | |
2448 | should avoid writing weird assembly. */ | |
2449 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
c434dee6 | 2450 | { |
e03a8ed8 | 2451 | struct elf_dyn_relocs **pp; |
c434dee6 AJ |
2452 | |
2453 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2454 | { | |
2455 | p->count -= p->pc_count; | |
2456 | p->pc_count = 0; | |
2457 | if (p->count == 0) | |
2458 | *pp = p->next; | |
2459 | else | |
2460 | pp = &p->next; | |
2461 | } | |
2462 | } | |
4e795f50 AM |
2463 | |
2464 | /* Also discard relocs on undefined weak syms with non-default | |
2465 | visibility. */ | |
22d606e9 | 2466 | if (eh->dyn_relocs != NULL |
4e795f50 | 2467 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
2468 | { |
2469 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2470 | eh->dyn_relocs = NULL; | |
2471 | ||
2472 | /* Make sure undefined weak symbols are output as a dynamic | |
2473 | symbol in PIEs. */ | |
2474 | else if (h->dynindx == -1 | |
d8045f23 NC |
2475 | && ! h->forced_local |
2476 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2477 | return FALSE; | |
22d606e9 | 2478 | } |
cbe950e9 | 2479 | |
d8045f23 | 2480 | } |
d40d037c | 2481 | else if (ELIMINATE_COPY_RELOCS) |
c434dee6 AJ |
2482 | { |
2483 | /* For the non-shared case, discard space for relocs against | |
2484 | symbols which turn out to need copy relocs or are not | |
2485 | dynamic. */ | |
2486 | ||
f5385ebf AM |
2487 | if (!h->non_got_ref |
2488 | && ((h->def_dynamic | |
2489 | && !h->def_regular) | |
c434dee6 AJ |
2490 | || (htab->elf.dynamic_sections_created |
2491 | && (h->root.type == bfd_link_hash_undefweak | |
2492 | || h->root.type == bfd_link_hash_undefined)))) | |
2493 | { | |
2494 | /* Make sure this symbol is output as a dynamic symbol. | |
2495 | Undefined weak syms won't yet be marked as dynamic. */ | |
2496 | if (h->dynindx == -1 | |
d8045f23 NC |
2497 | && ! h->forced_local |
2498 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2499 | return FALSE; | |
c434dee6 AJ |
2500 | |
2501 | /* If that succeeded, we know we'll be keeping all the | |
2502 | relocs. */ | |
2503 | if (h->dynindx != -1) | |
2504 | goto keep; | |
2505 | } | |
2506 | ||
2507 | eh->dyn_relocs = NULL; | |
2508 | ||
2509 | keep: ; | |
2510 | } | |
2511 | ||
2512 | /* Finally, allocate space. */ | |
2513 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2514 | { | |
e7c33416 NC |
2515 | asection * sreloc; |
2516 | ||
cbe950e9 | 2517 | sreloc = elf_section_data (p->sec)->sreloc; |
e7c33416 NC |
2518 | |
2519 | BFD_ASSERT (sreloc != NULL); | |
2520 | ||
351f65ca | 2521 | sreloc->size += p->count * bed->s->sizeof_rela; |
c434dee6 AJ |
2522 | } |
2523 | ||
b34976b6 | 2524 | return TRUE; |
c434dee6 AJ |
2525 | } |
2526 | ||
c25bc9fc L |
2527 | /* Allocate space in .plt, .got and associated reloc sections for |
2528 | local dynamic relocs. */ | |
2529 | ||
2530 | static bfd_boolean | |
351f65ca | 2531 | elf_x86_64_allocate_local_dynrelocs (void **slot, void *inf) |
c25bc9fc L |
2532 | { |
2533 | struct elf_link_hash_entry *h | |
2534 | = (struct elf_link_hash_entry *) *slot; | |
2535 | ||
2536 | if (h->type != STT_GNU_IFUNC | |
2537 | || !h->def_regular | |
2538 | || !h->ref_regular | |
2539 | || !h->forced_local | |
2540 | || h->root.type != bfd_link_hash_defined) | |
2541 | abort (); | |
2542 | ||
351f65ca | 2543 | return elf_x86_64_allocate_dynrelocs (h, inf); |
c25bc9fc L |
2544 | } |
2545 | ||
c434dee6 AJ |
2546 | /* Find any dynamic relocs that apply to read-only sections. */ |
2547 | ||
b34976b6 | 2548 | static bfd_boolean |
351f65ca L |
2549 | elf_x86_64_readonly_dynrelocs (struct elf_link_hash_entry *h, |
2550 | void * inf) | |
c434dee6 | 2551 | { |
351f65ca | 2552 | struct elf_x86_64_link_hash_entry *eh; |
e03a8ed8 | 2553 | struct elf_dyn_relocs *p; |
c434dee6 | 2554 | |
aa715242 L |
2555 | /* Skip local IFUNC symbols. */ |
2556 | if (h->forced_local && h->type == STT_GNU_IFUNC) | |
2557 | return TRUE; | |
2558 | ||
351f65ca | 2559 | eh = (struct elf_x86_64_link_hash_entry *) h; |
c434dee6 AJ |
2560 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
2561 | { | |
2562 | asection *s = p->sec->output_section; | |
2563 | ||
2564 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2565 | { | |
2566 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2567 | ||
2568 | info->flags |= DF_TEXTREL; | |
2569 | ||
b70321a2 L |
2570 | if (info->warn_shared_textrel && info->shared) |
2571 | info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"), | |
2572 | p->sec->owner, h->root.root.string, | |
2573 | p->sec); | |
2574 | ||
c434dee6 | 2575 | /* Not an error, just cut short the traversal. */ |
b34976b6 | 2576 | return FALSE; |
c434dee6 AJ |
2577 | } |
2578 | } | |
b34976b6 | 2579 | return TRUE; |
c434dee6 AJ |
2580 | } |
2581 | ||
70256ad8 AJ |
2582 | /* Set the sizes of the dynamic sections. */ |
2583 | ||
b34976b6 | 2584 | static bfd_boolean |
351f65ca L |
2585 | elf_x86_64_size_dynamic_sections (bfd *output_bfd, |
2586 | struct bfd_link_info *info) | |
70256ad8 | 2587 | { |
351f65ca | 2588 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
2589 | bfd *dynobj; |
2590 | asection *s; | |
b34976b6 | 2591 | bfd_boolean relocs; |
c434dee6 | 2592 | bfd *ibfd; |
351f65ca | 2593 | const struct elf_backend_data *bed; |
70256ad8 | 2594 | |
351f65ca | 2595 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2596 | if (htab == NULL) |
2597 | return FALSE; | |
351f65ca | 2598 | bed = get_elf_backend_data (output_bfd); |
4dfe6ac6 | 2599 | |
c434dee6 AJ |
2600 | dynobj = htab->elf.dynobj; |
2601 | if (dynobj == NULL) | |
2602 | abort (); | |
70256ad8 | 2603 | |
c434dee6 | 2604 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
2605 | { |
2606 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 2607 | if (info->executable) |
70256ad8 AJ |
2608 | { |
2609 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
c434dee6 AJ |
2610 | if (s == NULL) |
2611 | abort (); | |
351f65ca L |
2612 | s->size = htab->dynamic_interpreter_size; |
2613 | s->contents = (unsigned char *) htab->dynamic_interpreter; | |
70256ad8 AJ |
2614 | } |
2615 | } | |
70256ad8 | 2616 | |
c434dee6 AJ |
2617 | /* Set up .got offsets for local syms, and space for local dynamic |
2618 | relocs. */ | |
2619 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
70256ad8 | 2620 | { |
c434dee6 AJ |
2621 | bfd_signed_vma *local_got; |
2622 | bfd_signed_vma *end_local_got; | |
bffbf940 | 2623 | char *local_tls_type; |
67a4f2b7 | 2624 | bfd_vma *local_tlsdesc_gotent; |
c434dee6 AJ |
2625 | bfd_size_type locsymcount; |
2626 | Elf_Internal_Shdr *symtab_hdr; | |
2627 | asection *srel; | |
70256ad8 | 2628 | |
0ffa91dd | 2629 | if (! is_x86_64_elf (ibfd)) |
70256ad8 AJ |
2630 | continue; |
2631 | ||
c434dee6 | 2632 | for (s = ibfd->sections; s != NULL; s = s->next) |
70256ad8 | 2633 | { |
e03a8ed8 | 2634 | struct elf_dyn_relocs *p; |
c434dee6 | 2635 | |
e03a8ed8 | 2636 | for (p = (struct elf_dyn_relocs *) |
e81d3500 | 2637 | (elf_section_data (s)->local_dynrel); |
c434dee6 AJ |
2638 | p != NULL; |
2639 | p = p->next) | |
70256ad8 | 2640 | { |
c434dee6 AJ |
2641 | if (!bfd_is_abs_section (p->sec) |
2642 | && bfd_is_abs_section (p->sec->output_section)) | |
2643 | { | |
2644 | /* Input section has been discarded, either because | |
2645 | it is a copy of a linkonce section or due to | |
2646 | linker script /DISCARD/, so we'll be discarding | |
2647 | the relocs too. */ | |
2648 | } | |
2649 | else if (p->count != 0) | |
2650 | { | |
2651 | srel = elf_section_data (p->sec)->sreloc; | |
351f65ca | 2652 | srel->size += p->count * bed->s->sizeof_rela; |
4b819e1f L |
2653 | if ((p->sec->output_section->flags & SEC_READONLY) != 0 |
2654 | && (info->flags & DF_TEXTREL) == 0) | |
b70321a2 L |
2655 | { |
2656 | info->flags |= DF_TEXTREL; | |
2657 | if (info->warn_shared_textrel && info->shared) | |
2658 | info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"), | |
2659 | p->sec->owner, p->sec); | |
b70321a2 | 2660 | } |
c434dee6 | 2661 | } |
70256ad8 AJ |
2662 | } |
2663 | } | |
c434dee6 AJ |
2664 | |
2665 | local_got = elf_local_got_refcounts (ibfd); | |
2666 | if (!local_got) | |
2667 | continue; | |
2668 | ||
0ffa91dd | 2669 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c434dee6 AJ |
2670 | locsymcount = symtab_hdr->sh_info; |
2671 | end_local_got = local_got + locsymcount; | |
351f65ca L |
2672 | local_tls_type = elf_x86_64_local_got_tls_type (ibfd); |
2673 | local_tlsdesc_gotent = elf_x86_64_local_tlsdesc_gotent (ibfd); | |
6de2ae4a L |
2674 | s = htab->elf.sgot; |
2675 | srel = htab->elf.srelgot; | |
67a4f2b7 AO |
2676 | for (; local_got < end_local_got; |
2677 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
70256ad8 | 2678 | { |
67a4f2b7 | 2679 | *local_tlsdesc_gotent = (bfd_vma) -1; |
c434dee6 | 2680 | if (*local_got > 0) |
70256ad8 | 2681 | { |
67a4f2b7 AO |
2682 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2683 | { | |
6de2ae4a | 2684 | *local_tlsdesc_gotent = htab->elf.sgotplt->size |
351f65ca | 2685 | - elf_x86_64_compute_jump_table_size (htab); |
6de2ae4a | 2686 | htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE; |
67a4f2b7 AO |
2687 | *local_got = (bfd_vma) -2; |
2688 | } | |
2689 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2690 | || GOT_TLS_GD_P (*local_tls_type)) | |
2691 | { | |
2692 | *local_got = s->size; | |
2693 | s->size += GOT_ENTRY_SIZE; | |
2694 | if (GOT_TLS_GD_P (*local_tls_type)) | |
2695 | s->size += GOT_ENTRY_SIZE; | |
2696 | } | |
bffbf940 | 2697 | if (info->shared |
67a4f2b7 | 2698 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
bffbf940 | 2699 | || *local_tls_type == GOT_TLS_IE) |
67a4f2b7 AO |
2700 | { |
2701 | if (GOT_TLS_GDESC_P (*local_tls_type)) | |
2702 | { | |
6de2ae4a | 2703 | htab->elf.srelplt->size |
351f65ca | 2704 | += bed->s->sizeof_rela; |
67a4f2b7 AO |
2705 | htab->tlsdesc_plt = (bfd_vma) -1; |
2706 | } | |
2707 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2708 | || GOT_TLS_GD_P (*local_tls_type)) | |
351f65ca | 2709 | srel->size += bed->s->sizeof_rela; |
67a4f2b7 | 2710 | } |
70256ad8 AJ |
2711 | } |
2712 | else | |
c434dee6 AJ |
2713 | *local_got = (bfd_vma) -1; |
2714 | } | |
2715 | } | |
70256ad8 | 2716 | |
bffbf940 JJ |
2717 | if (htab->tls_ld_got.refcount > 0) |
2718 | { | |
2719 | /* Allocate 2 got entries and 1 dynamic reloc for R_X86_64_TLSLD | |
2720 | relocs. */ | |
6de2ae4a L |
2721 | htab->tls_ld_got.offset = htab->elf.sgot->size; |
2722 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
351f65ca | 2723 | htab->elf.srelgot->size += bed->s->sizeof_rela; |
bffbf940 JJ |
2724 | } |
2725 | else | |
2726 | htab->tls_ld_got.offset = -1; | |
2727 | ||
c434dee6 AJ |
2728 | /* Allocate global sym .plt and .got entries, and space for global |
2729 | sym dynamic relocs. */ | |
351f65ca | 2730 | elf_link_hash_traverse (&htab->elf, elf_x86_64_allocate_dynrelocs, |
eb4ff4d6 | 2731 | info); |
c434dee6 | 2732 | |
c25bc9fc L |
2733 | /* Allocate .plt and .got entries, and space for local symbols. */ |
2734 | htab_traverse (htab->loc_hash_table, | |
351f65ca | 2735 | elf_x86_64_allocate_local_dynrelocs, |
c25bc9fc L |
2736 | info); |
2737 | ||
67a4f2b7 AO |
2738 | /* For every jump slot reserved in the sgotplt, reloc_count is |
2739 | incremented. However, when we reserve space for TLS descriptors, | |
2740 | it's not incremented, so in order to compute the space reserved | |
2741 | for them, it suffices to multiply the reloc count by the jump | |
e1f98742 L |
2742 | slot size. |
2743 | ||
2744 | PR ld/13302: We start next_irelative_index at the end of .rela.plt | |
2745 | so that R_X86_64_IRELATIVE entries come last. */ | |
6de2ae4a | 2746 | if (htab->elf.srelplt) |
e1f98742 L |
2747 | { |
2748 | htab->sgotplt_jump_table_size | |
2749 | = elf_x86_64_compute_jump_table_size (htab); | |
2750 | htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1; | |
2751 | } | |
2752 | else if (htab->elf.irelplt) | |
2753 | htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1; | |
67a4f2b7 AO |
2754 | |
2755 | if (htab->tlsdesc_plt) | |
2756 | { | |
2757 | /* If we're not using lazy TLS relocations, don't generate the | |
2758 | PLT and GOT entries they require. */ | |
2759 | if ((info->flags & DF_BIND_NOW)) | |
2760 | htab->tlsdesc_plt = 0; | |
2761 | else | |
2762 | { | |
6de2ae4a L |
2763 | htab->tlsdesc_got = htab->elf.sgot->size; |
2764 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
67a4f2b7 AO |
2765 | /* Reserve room for the initial entry. |
2766 | FIXME: we could probably do away with it in this case. */ | |
6de2ae4a | 2767 | if (htab->elf.splt->size == 0) |
eed180f8 | 2768 | htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd); |
6de2ae4a | 2769 | htab->tlsdesc_plt = htab->elf.splt->size; |
eed180f8 | 2770 | htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd); |
67a4f2b7 AO |
2771 | } |
2772 | } | |
2773 | ||
a7b16ceb L |
2774 | if (htab->elf.sgotplt) |
2775 | { | |
e28df02b L |
2776 | struct elf_link_hash_entry *got; |
2777 | got = elf_link_hash_lookup (elf_hash_table (info), | |
2778 | "_GLOBAL_OFFSET_TABLE_", | |
2779 | FALSE, FALSE, FALSE); | |
2780 | ||
a7b16ceb | 2781 | /* Don't allocate .got.plt section if there are no GOT nor PLT |
eed180f8 | 2782 | entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ |
e28df02b L |
2783 | if ((got == NULL |
2784 | || !got->ref_regular_nonweak) | |
2785 | && (htab->elf.sgotplt->size | |
2786 | == get_elf_backend_data (output_bfd)->got_header_size) | |
a7b16ceb L |
2787 | && (htab->elf.splt == NULL |
2788 | || htab->elf.splt->size == 0) | |
2789 | && (htab->elf.sgot == NULL | |
2790 | || htab->elf.sgot->size == 0) | |
2791 | && (htab->elf.iplt == NULL | |
2792 | || htab->elf.iplt->size == 0) | |
2793 | && (htab->elf.igotplt == NULL | |
2794 | || htab->elf.igotplt->size == 0)) | |
2795 | htab->elf.sgotplt->size = 0; | |
2796 | } | |
2797 | ||
c434dee6 AJ |
2798 | /* We now have determined the sizes of the various dynamic sections. |
2799 | Allocate memory for them. */ | |
b34976b6 | 2800 | relocs = FALSE; |
c434dee6 AJ |
2801 | for (s = dynobj->sections; s != NULL; s = s->next) |
2802 | { | |
2803 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2804 | continue; | |
2805 | ||
6de2ae4a L |
2806 | if (s == htab->elf.splt |
2807 | || s == htab->elf.sgot | |
2808 | || s == htab->elf.sgotplt | |
2809 | || s == htab->elf.iplt | |
2810 | || s == htab->elf.igotplt | |
75ff4589 | 2811 | || s == htab->sdynbss) |
c434dee6 AJ |
2812 | { |
2813 | /* Strip this section if we don't need it; see the | |
2814 | comment below. */ | |
2815 | } | |
0112cd26 | 2816 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
c434dee6 | 2817 | { |
6de2ae4a | 2818 | if (s->size != 0 && s != htab->elf.srelplt) |
b34976b6 | 2819 | relocs = TRUE; |
c434dee6 AJ |
2820 | |
2821 | /* We use the reloc_count field as a counter if we need | |
2822 | to copy relocs into the output file. */ | |
6de2ae4a | 2823 | if (s != htab->elf.srelplt) |
67a4f2b7 | 2824 | s->reloc_count = 0; |
70256ad8 | 2825 | } |
c434dee6 | 2826 | else |
70256ad8 AJ |
2827 | { |
2828 | /* It's not one of our sections, so don't allocate space. */ | |
2829 | continue; | |
2830 | } | |
2831 | ||
eea6121a | 2832 | if (s->size == 0) |
70256ad8 | 2833 | { |
c434dee6 AJ |
2834 | /* If we don't need this section, strip it from the |
2835 | output file. This is mostly to handle .rela.bss and | |
2836 | .rela.plt. We must create both sections in | |
2837 | create_dynamic_sections, because they must be created | |
2838 | before the linker maps input sections to output | |
2839 | sections. The linker does that before | |
2840 | adjust_dynamic_symbol is called, and it is that | |
2841 | function which decides whether anything needs to go | |
2842 | into these sections. */ | |
2843 | ||
8423293d | 2844 | s->flags |= SEC_EXCLUDE; |
70256ad8 AJ |
2845 | continue; |
2846 | } | |
2847 | ||
c456f082 AM |
2848 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2849 | continue; | |
2850 | ||
70256ad8 AJ |
2851 | /* Allocate memory for the section contents. We use bfd_zalloc |
2852 | here in case unused entries are not reclaimed before the | |
2853 | section's contents are written out. This should not happen, | |
2854 | but this way if it does, we get a R_X86_64_NONE reloc instead | |
2855 | of garbage. */ | |
eea6121a | 2856 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c434dee6 | 2857 | if (s->contents == NULL) |
b34976b6 | 2858 | return FALSE; |
70256ad8 AJ |
2859 | } |
2860 | ||
e41b3a13 JJ |
2861 | if (htab->plt_eh_frame != NULL |
2862 | && htab->elf.splt != NULL | |
2863 | && htab->elf.splt->size != 0 | |
2864 | && (htab->elf.splt->flags & SEC_EXCLUDE) == 0) | |
2865 | bfd_put_32 (dynobj, htab->elf.splt->size, | |
2866 | htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET); | |
2867 | ||
c434dee6 | 2868 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
2869 | { |
2870 | /* Add some entries to the .dynamic section. We fill in the | |
351f65ca | 2871 | values later, in elf_x86_64_finish_dynamic_sections, but we |
70256ad8 | 2872 | must add the entries now so that we get the correct size for |
407443a3 | 2873 | the .dynamic section. The DT_DEBUG entry is filled in by the |
70256ad8 | 2874 | dynamic linker and used by the debugger. */ |
dc810e39 | 2875 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2876 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2877 | |
36af4a4e | 2878 | if (info->executable) |
70256ad8 | 2879 | { |
dc810e39 | 2880 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2881 | return FALSE; |
70256ad8 AJ |
2882 | } |
2883 | ||
6de2ae4a | 2884 | if (htab->elf.splt->size != 0) |
70256ad8 | 2885 | { |
dc810e39 AM |
2886 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2887 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2888 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2889 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2890 | return FALSE; |
67a4f2b7 AO |
2891 | |
2892 | if (htab->tlsdesc_plt | |
2893 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
2894 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
2895 | return FALSE; | |
70256ad8 AJ |
2896 | } |
2897 | ||
2898 | if (relocs) | |
2899 | { | |
dc810e39 AM |
2900 | if (!add_dynamic_entry (DT_RELA, 0) |
2901 | || !add_dynamic_entry (DT_RELASZ, 0) | |
351f65ca | 2902 | || !add_dynamic_entry (DT_RELAENT, bed->s->sizeof_rela)) |
b34976b6 | 2903 | return FALSE; |
70256ad8 | 2904 | |
c434dee6 AJ |
2905 | /* If any dynamic relocs apply to a read-only section, |
2906 | then we need a DT_TEXTREL entry. */ | |
2907 | if ((info->flags & DF_TEXTREL) == 0) | |
eed180f8 | 2908 | elf_link_hash_traverse (&htab->elf, |
351f65ca | 2909 | elf_x86_64_readonly_dynrelocs, |
eb4ff4d6 | 2910 | info); |
c434dee6 AJ |
2911 | |
2912 | if ((info->flags & DF_TEXTREL) != 0) | |
2913 | { | |
2914 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2915 | return FALSE; |
c434dee6 | 2916 | } |
70256ad8 AJ |
2917 | } |
2918 | } | |
dc810e39 | 2919 | #undef add_dynamic_entry |
70256ad8 | 2920 | |
b34976b6 | 2921 | return TRUE; |
70256ad8 AJ |
2922 | } |
2923 | ||
67a4f2b7 | 2924 | static bfd_boolean |
351f65ca L |
2925 | elf_x86_64_always_size_sections (bfd *output_bfd, |
2926 | struct bfd_link_info *info) | |
67a4f2b7 AO |
2927 | { |
2928 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
2929 | ||
2930 | if (tls_sec) | |
2931 | { | |
2932 | struct elf_link_hash_entry *tlsbase; | |
2933 | ||
2934 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
2935 | "_TLS_MODULE_BASE_", | |
2936 | FALSE, FALSE, FALSE); | |
2937 | ||
2938 | if (tlsbase && tlsbase->type == STT_TLS) | |
2939 | { | |
351f65ca | 2940 | struct elf_x86_64_link_hash_table *htab; |
67a4f2b7 AO |
2941 | struct bfd_link_hash_entry *bh = NULL; |
2942 | const struct elf_backend_data *bed | |
2943 | = get_elf_backend_data (output_bfd); | |
2944 | ||
351f65ca | 2945 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2946 | if (htab == NULL) |
2947 | return FALSE; | |
2948 | ||
67a4f2b7 AO |
2949 | if (!(_bfd_generic_link_add_one_symbol |
2950 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
2951 | tls_sec, 0, NULL, FALSE, | |
2952 | bed->collect, &bh))) | |
2953 | return FALSE; | |
9f03412a | 2954 | |
4dfe6ac6 | 2955 | htab->tls_module_base = bh; |
9f03412a | 2956 | |
67a4f2b7 AO |
2957 | tlsbase = (struct elf_link_hash_entry *)bh; |
2958 | tlsbase->def_regular = 1; | |
2959 | tlsbase->other = STV_HIDDEN; | |
2960 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
2961 | } | |
2962 | } | |
2963 | ||
2964 | return TRUE; | |
2965 | } | |
2966 | ||
9f03412a AO |
2967 | /* _TLS_MODULE_BASE_ needs to be treated especially when linking |
2968 | executables. Rather than setting it to the beginning of the TLS | |
2969 | section, we have to set it to the end. This function may be called | |
2970 | multiple times, it is idempotent. */ | |
2971 | ||
2972 | static void | |
351f65ca | 2973 | elf_x86_64_set_tls_module_base (struct bfd_link_info *info) |
9f03412a | 2974 | { |
351f65ca | 2975 | struct elf_x86_64_link_hash_table *htab; |
9f03412a AO |
2976 | struct bfd_link_hash_entry *base; |
2977 | ||
2978 | if (!info->executable) | |
2979 | return; | |
2980 | ||
351f65ca | 2981 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2982 | if (htab == NULL) |
2983 | return; | |
9f03412a | 2984 | |
4dfe6ac6 NC |
2985 | base = htab->tls_module_base; |
2986 | if (base == NULL) | |
9f03412a AO |
2987 | return; |
2988 | ||
4dfe6ac6 | 2989 | base->u.def.value = htab->elf.tls_size; |
9f03412a AO |
2990 | } |
2991 | ||
bffbf940 JJ |
2992 | /* Return the base VMA address which should be subtracted from real addresses |
2993 | when resolving @dtpoff relocation. | |
2994 | This is PT_TLS segment p_vaddr. */ | |
2995 | ||
2996 | static bfd_vma | |
351f65ca | 2997 | elf_x86_64_dtpoff_base (struct bfd_link_info *info) |
bffbf940 | 2998 | { |
e1918d23 AM |
2999 | /* If tls_sec is NULL, we should have signalled an error already. */ |
3000 | if (elf_hash_table (info)->tls_sec == NULL) | |
bffbf940 | 3001 | return 0; |
e1918d23 | 3002 | return elf_hash_table (info)->tls_sec->vma; |
bffbf940 JJ |
3003 | } |
3004 | ||
3005 | /* Return the relocation value for @tpoff relocation | |
3006 | if STT_TLS virtual address is ADDRESS. */ | |
3007 | ||
3008 | static bfd_vma | |
351f65ca | 3009 | elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address) |
bffbf940 | 3010 | { |
e1918d23 | 3011 | struct elf_link_hash_table *htab = elf_hash_table (info); |
7dc98aea RO |
3012 | const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd); |
3013 | bfd_vma static_tls_size; | |
bffbf940 JJ |
3014 | |
3015 | /* If tls_segment is NULL, we should have signalled an error already. */ | |
e1918d23 | 3016 | if (htab->tls_sec == NULL) |
bffbf940 | 3017 | return 0; |
7dc98aea RO |
3018 | |
3019 | /* Consider special static TLS alignment requirements. */ | |
3020 | static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment); | |
3021 | return address - static_tls_size - htab->tls_sec->vma; | |
bffbf940 JJ |
3022 | } |
3023 | ||
90f487df L |
3024 | /* Is the instruction before OFFSET in CONTENTS a 32bit relative |
3025 | branch? */ | |
3026 | ||
3027 | static bfd_boolean | |
3028 | is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset) | |
3029 | { | |
3030 | /* Opcode Instruction | |
3031 | 0xe8 call | |
3032 | 0xe9 jump | |
3033 | 0x0f 0x8x conditional jump */ | |
3034 | return ((offset > 0 | |
3035 | && (contents [offset - 1] == 0xe8 | |
3036 | || contents [offset - 1] == 0xe9)) | |
3037 | || (offset > 1 | |
3038 | && contents [offset - 2] == 0x0f | |
3039 | && (contents [offset - 1] & 0xf0) == 0x80)); | |
3040 | } | |
3041 | ||
8d88c4ca NC |
3042 | /* Relocate an x86_64 ELF section. */ |
3043 | ||
b34976b6 | 3044 | static bfd_boolean |
351f65ca L |
3045 | elf_x86_64_relocate_section (bfd *output_bfd, |
3046 | struct bfd_link_info *info, | |
3047 | bfd *input_bfd, | |
3048 | asection *input_section, | |
3049 | bfd_byte *contents, | |
3050 | Elf_Internal_Rela *relocs, | |
3051 | Elf_Internal_Sym *local_syms, | |
3052 | asection **local_sections) | |
8d88c4ca | 3053 | { |
351f65ca | 3054 | struct elf_x86_64_link_hash_table *htab; |
8d88c4ca NC |
3055 | Elf_Internal_Shdr *symtab_hdr; |
3056 | struct elf_link_hash_entry **sym_hashes; | |
3057 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 3058 | bfd_vma *local_tlsdesc_gotents; |
c434dee6 | 3059 | Elf_Internal_Rela *rel; |
8d88c4ca | 3060 | Elf_Internal_Rela *relend; |
eed180f8 | 3061 | const unsigned int plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd); |
8d88c4ca | 3062 | |
0ffa91dd NC |
3063 | BFD_ASSERT (is_x86_64_elf (input_bfd)); |
3064 | ||
351f65ca | 3065 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
3066 | if (htab == NULL) |
3067 | return FALSE; | |
0ffa91dd | 3068 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
8d88c4ca NC |
3069 | sym_hashes = elf_sym_hashes (input_bfd); |
3070 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
351f65ca | 3071 | local_tlsdesc_gotents = elf_x86_64_local_tlsdesc_gotent (input_bfd); |
8d88c4ca | 3072 | |
351f65ca | 3073 | elf_x86_64_set_tls_module_base (info); |
9f03412a | 3074 | |
c434dee6 | 3075 | rel = relocs; |
8d88c4ca | 3076 | relend = relocs + input_section->reloc_count; |
c434dee6 | 3077 | for (; rel < relend; rel++) |
8d88c4ca | 3078 | { |
bffbf940 | 3079 | unsigned int r_type; |
8d88c4ca NC |
3080 | reloc_howto_type *howto; |
3081 | unsigned long r_symndx; | |
3082 | struct elf_link_hash_entry *h; | |
3083 | Elf_Internal_Sym *sym; | |
3084 | asection *sec; | |
67a4f2b7 | 3085 | bfd_vma off, offplt; |
8d88c4ca | 3086 | bfd_vma relocation; |
b34976b6 | 3087 | bfd_boolean unresolved_reloc; |
8d88c4ca | 3088 | bfd_reloc_status_type r; |
bffbf940 | 3089 | int tls_type; |
cbe950e9 | 3090 | asection *base_got; |
8d88c4ca | 3091 | |
351f65ca | 3092 | r_type = ELF32_R_TYPE (rel->r_info); |
fe4770f4 AJ |
3093 | if (r_type == (int) R_X86_64_GNU_VTINHERIT |
3094 | || r_type == (int) R_X86_64_GNU_VTENTRY) | |
3095 | continue; | |
8d88c4ca | 3096 | |
bffbf940 | 3097 | if (r_type >= R_X86_64_max) |
8da6118f KH |
3098 | { |
3099 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3100 | return FALSE; |
8da6118f | 3101 | } |
8d88c4ca | 3102 | |
d7921315 | 3103 | if (r_type != (int) R_X86_64_32 |
eed180f8 | 3104 | || ABI_64_P (output_bfd)) |
d7921315 L |
3105 | howto = x86_64_elf_howto_table + r_type; |
3106 | else | |
3107 | howto = (x86_64_elf_howto_table | |
3108 | + ARRAY_SIZE (x86_64_elf_howto_table) - 1); | |
351f65ca | 3109 | r_symndx = htab->r_sym (rel->r_info); |
8d88c4ca NC |
3110 | h = NULL; |
3111 | sym = NULL; | |
3112 | sec = NULL; | |
b34976b6 | 3113 | unresolved_reloc = FALSE; |
8d88c4ca | 3114 | if (r_symndx < symtab_hdr->sh_info) |
8da6118f KH |
3115 | { |
3116 | sym = local_syms + r_symndx; | |
3117 | sec = local_sections[r_symndx]; | |
c434dee6 | 3118 | |
c25bc9fc L |
3119 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, |
3120 | &sec, rel); | |
3121 | ||
3122 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
1f85278f | 3123 | if (!info->relocatable |
351f65ca | 3124 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
c25bc9fc | 3125 | { |
351f65ca L |
3126 | h = elf_x86_64_get_local_sym_hash (htab, input_bfd, |
3127 | rel, FALSE); | |
c25bc9fc L |
3128 | if (h == NULL) |
3129 | abort (); | |
3130 | ||
eed180f8 | 3131 | /* Set STT_GNU_IFUNC symbol value. */ |
c25bc9fc L |
3132 | h->root.u.def.value = sym->st_value; |
3133 | h->root.u.def.section = sec; | |
3134 | } | |
8da6118f | 3135 | } |
8d88c4ca | 3136 | else |
8da6118f | 3137 | { |
c9736ba0 | 3138 | bfd_boolean warned ATTRIBUTE_UNUSED; |
c434dee6 | 3139 | |
b2a8e766 AM |
3140 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3141 | r_symndx, symtab_hdr, sym_hashes, | |
3142 | h, sec, relocation, | |
3143 | unresolved_reloc, warned); | |
8da6118f | 3144 | } |
ab96bf03 AM |
3145 | |
3146 | if (sec != NULL && elf_discarded_section (sec)) | |
0672748a L |
3147 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
3148 | rel, relend, howto, contents); | |
ab96bf03 AM |
3149 | |
3150 | if (info->relocatable) | |
3151 | continue; | |
3152 | ||
64d25c44 L |
3153 | if (rel->r_addend == 0 |
3154 | && r_type == R_X86_64_64 | |
3155 | && !ABI_64_P (output_bfd)) | |
3156 | { | |
3157 | /* For x32, treat R_X86_64_64 like R_X86_64_32 and zero-extend | |
3158 | it to 64bit if addend is zero. */ | |
3159 | r_type = R_X86_64_32; | |
3160 | memset (contents + rel->r_offset + 4, 0, 4); | |
3161 | } | |
3162 | ||
cbe950e9 L |
3163 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
3164 | it here if it is defined in a non-shared object. */ | |
3165 | if (h != NULL | |
3166 | && h->type == STT_GNU_IFUNC | |
3167 | && h->def_regular) | |
3168 | { | |
3169 | asection *plt; | |
3170 | bfd_vma plt_index; | |
4c544807 | 3171 | const char *name; |
cbe950e9 L |
3172 | |
3173 | if ((input_section->flags & SEC_ALLOC) == 0 | |
3174 | || h->plt.offset == (bfd_vma) -1) | |
3175 | abort (); | |
3176 | ||
3177 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
6de2ae4a | 3178 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
cbe950e9 L |
3179 | relocation = (plt->output_section->vma |
3180 | + plt->output_offset + h->plt.offset); | |
3181 | ||
3182 | switch (r_type) | |
3183 | { | |
3184 | default: | |
4c544807 L |
3185 | if (h->root.root.string) |
3186 | name = h->root.root.string; | |
3187 | else | |
3188 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3189 | NULL); | |
cbe950e9 L |
3190 | (*_bfd_error_handler) |
3191 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
3192 | "symbol `%s' isn't handled by %s"), input_bfd, | |
3193 | x86_64_elf_howto_table[r_type].name, | |
4c544807 | 3194 | name, __FUNCTION__); |
cbe950e9 L |
3195 | bfd_set_error (bfd_error_bad_value); |
3196 | return FALSE; | |
3197 | ||
3198 | case R_X86_64_32S: | |
710ab287 | 3199 | if (info->shared) |
cbe950e9 | 3200 | abort (); |
710ab287 L |
3201 | goto do_relocation; |
3202 | ||
248775ba L |
3203 | case R_X86_64_32: |
3204 | if (ABI_64_P (output_bfd)) | |
3205 | goto do_relocation; | |
17672001 | 3206 | /* FALLTHROUGH */ |
eed180f8 | 3207 | case R_X86_64_64: |
710ab287 L |
3208 | if (rel->r_addend != 0) |
3209 | { | |
4c544807 L |
3210 | if (h->root.root.string) |
3211 | name = h->root.root.string; | |
3212 | else | |
3213 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
3214 | sym, NULL); | |
710ab287 L |
3215 | (*_bfd_error_handler) |
3216 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
3217 | "symbol `%s' has non-zero addend: %d"), | |
3218 | input_bfd, x86_64_elf_howto_table[r_type].name, | |
4c544807 | 3219 | name, rel->r_addend); |
710ab287 L |
3220 | bfd_set_error (bfd_error_bad_value); |
3221 | return FALSE; | |
3222 | } | |
3223 | ||
3224 | /* Generate dynamic relcoation only when there is a | |
c293fa49 | 3225 | non-GOT reference in a shared object. */ |
710ab287 L |
3226 | if (info->shared && h->non_got_ref) |
3227 | { | |
3228 | Elf_Internal_Rela outrel; | |
710ab287 L |
3229 | asection *sreloc; |
3230 | ||
c25bc9fc L |
3231 | /* Need a dynamic relocation to get the real function |
3232 | address. */ | |
710ab287 L |
3233 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, |
3234 | info, | |
3235 | input_section, | |
3236 | rel->r_offset); | |
3237 | if (outrel.r_offset == (bfd_vma) -1 | |
3238 | || outrel.r_offset == (bfd_vma) -2) | |
3239 | abort (); | |
3240 | ||
3241 | outrel.r_offset += (input_section->output_section->vma | |
3242 | + input_section->output_offset); | |
3243 | ||
3244 | if (h->dynindx == -1 | |
44c4ea11 L |
3245 | || h->forced_local |
3246 | || info->executable) | |
710ab287 L |
3247 | { |
3248 | /* This symbol is resolved locally. */ | |
56b8aada L |
3249 | outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE); |
3250 | outrel.r_addend = (h->root.u.def.value | |
3251 | + h->root.u.def.section->output_section->vma | |
3252 | + h->root.u.def.section->output_offset); | |
710ab287 L |
3253 | } |
3254 | else | |
3255 | { | |
351f65ca | 3256 | outrel.r_info = htab->r_info (h->dynindx, r_type); |
710ab287 L |
3257 | outrel.r_addend = 0; |
3258 | } | |
3259 | ||
6de2ae4a | 3260 | sreloc = htab->elf.irelifunc; |
351f65ca | 3261 | elf_append_rela (output_bfd, sreloc, &outrel); |
710ab287 L |
3262 | |
3263 | /* If this reloc is against an external symbol, we | |
3264 | do not want to fiddle with the addend. Otherwise, | |
3265 | we need to include the symbol value so that it | |
3266 | becomes an addend for the dynamic reloc. For an | |
3267 | internal symbol, we have updated addend. */ | |
56b8aada | 3268 | continue; |
710ab287 | 3269 | } |
17672001 | 3270 | /* FALLTHROUGH */ |
cbe950e9 L |
3271 | case R_X86_64_PC32: |
3272 | case R_X86_64_PC64: | |
3273 | case R_X86_64_PLT32: | |
3274 | goto do_relocation; | |
3275 | ||
3276 | case R_X86_64_GOTPCREL: | |
3277 | case R_X86_64_GOTPCREL64: | |
6de2ae4a | 3278 | base_got = htab->elf.sgot; |
cbe950e9 L |
3279 | off = h->got.offset; |
3280 | ||
7afd84dc | 3281 | if (base_got == NULL) |
cbe950e9 L |
3282 | abort (); |
3283 | ||
7afd84dc | 3284 | if (off == (bfd_vma) -1) |
cbe950e9 | 3285 | { |
7afd84dc L |
3286 | /* We can't use h->got.offset here to save state, or |
3287 | even just remember the offset, as finish_dynamic_symbol | |
3288 | would use that as offset into .got. */ | |
cbe950e9 | 3289 | |
6de2ae4a | 3290 | if (htab->elf.splt != NULL) |
7afd84dc | 3291 | { |
eed180f8 | 3292 | plt_index = h->plt.offset / plt_entry_size - 1; |
7afd84dc | 3293 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
6de2ae4a | 3294 | base_got = htab->elf.sgotplt; |
7afd84dc | 3295 | } |
cbe950e9 L |
3296 | else |
3297 | { | |
eed180f8 | 3298 | plt_index = h->plt.offset / plt_entry_size; |
7afd84dc | 3299 | off = plt_index * GOT_ENTRY_SIZE; |
6de2ae4a | 3300 | base_got = htab->elf.igotplt; |
7afd84dc L |
3301 | } |
3302 | ||
3303 | if (h->dynindx == -1 | |
3304 | || h->forced_local | |
3305 | || info->symbolic) | |
3306 | { | |
eed180f8 | 3307 | /* This references the local defitionion. We must |
7afd84dc | 3308 | initialize this entry in the global offset table. |
eed180f8 | 3309 | Since the offset must always be a multiple of 8, |
7afd84dc L |
3310 | we use the least significant bit to record |
3311 | whether we have initialized it already. | |
3312 | ||
3313 | When doing a dynamic link, we create a .rela.got | |
3314 | relocation entry to initialize the value. This | |
3315 | is done in the finish_dynamic_symbol routine. */ | |
3316 | if ((off & 1) != 0) | |
3317 | off &= ~1; | |
3318 | else | |
3319 | { | |
3320 | bfd_put_64 (output_bfd, relocation, | |
3321 | base_got->contents + off); | |
3322 | /* Note that this is harmless for the GOTPLT64 | |
3323 | case, as -1 | 1 still is -1. */ | |
3324 | h->got.offset |= 1; | |
3325 | } | |
cbe950e9 L |
3326 | } |
3327 | } | |
3328 | ||
3329 | relocation = (base_got->output_section->vma | |
3330 | + base_got->output_offset + off); | |
3331 | ||
cbe950e9 L |
3332 | goto do_relocation; |
3333 | } | |
3334 | } | |
3335 | ||
70256ad8 AJ |
3336 | /* When generating a shared object, the relocations handled here are |
3337 | copied into the output file to be resolved at run time. */ | |
3338 | switch (r_type) | |
3339 | { | |
3340 | case R_X86_64_GOT32: | |
7b81dfbb | 3341 | case R_X86_64_GOT64: |
70256ad8 AJ |
3342 | /* Relocation is to the entry for this symbol in the global |
3343 | offset table. */ | |
70256ad8 | 3344 | case R_X86_64_GOTPCREL: |
7b81dfbb AJ |
3345 | case R_X86_64_GOTPCREL64: |
3346 | /* Use global offset table entry as symbol value. */ | |
3347 | case R_X86_64_GOTPLT64: | |
3348 | /* This is the same as GOT64 for relocation purposes, but | |
3349 | indicates the existence of a PLT entry. The difficulty is, | |
3350 | that we must calculate the GOT slot offset from the PLT | |
3351 | offset, if this symbol got a PLT entry (it was global). | |
3352 | Additionally if it's computed from the PLT entry, then that | |
3353 | GOT offset is relative to .got.plt, not to .got. */ | |
6de2ae4a | 3354 | base_got = htab->elf.sgot; |
7b81dfbb | 3355 | |
6de2ae4a | 3356 | if (htab->elf.sgot == NULL) |
c434dee6 | 3357 | abort (); |
053579d7 | 3358 | |
51e0a107 | 3359 | if (h != NULL) |
70256ad8 | 3360 | { |
b34976b6 | 3361 | bfd_boolean dyn; |
c434dee6 AJ |
3362 | |
3363 | off = h->got.offset; | |
7b81dfbb | 3364 | if (h->needs_plt |
eed180f8 | 3365 | && h->plt.offset != (bfd_vma)-1 |
7b81dfbb AJ |
3366 | && off == (bfd_vma)-1) |
3367 | { | |
3368 | /* We can't use h->got.offset here to save | |
3369 | state, or even just remember the offset, as | |
3370 | finish_dynamic_symbol would use that as offset into | |
3371 | .got. */ | |
eed180f8 | 3372 | bfd_vma plt_index = h->plt.offset / plt_entry_size - 1; |
7b81dfbb | 3373 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
6de2ae4a | 3374 | base_got = htab->elf.sgotplt; |
7b81dfbb AJ |
3375 | } |
3376 | ||
c434dee6 | 3377 | dyn = htab->elf.dynamic_sections_created; |
51e0a107 | 3378 | |
27482721 | 3379 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
51e0a107 | 3380 | || (info->shared |
27482721 | 3381 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4bc6e03a AJ |
3382 | || (ELF_ST_VISIBILITY (h->other) |
3383 | && h->root.type == bfd_link_hash_undefweak)) | |
51e0a107 JH |
3384 | { |
3385 | /* This is actually a static link, or it is a -Bsymbolic | |
3386 | link and the symbol is defined locally, or the symbol | |
407443a3 | 3387 | was forced to be local because of a version file. We |
51e0a107 JH |
3388 | must initialize this entry in the global offset table. |
3389 | Since the offset must always be a multiple of 8, we | |
3390 | use the least significant bit to record whether we | |
3391 | have initialized it already. | |
3392 | ||
3393 | When doing a dynamic link, we create a .rela.got | |
407443a3 AJ |
3394 | relocation entry to initialize the value. This is |
3395 | done in the finish_dynamic_symbol routine. */ | |
51e0a107 JH |
3396 | if ((off & 1) != 0) |
3397 | off &= ~1; | |
3398 | else | |
3399 | { | |
3400 | bfd_put_64 (output_bfd, relocation, | |
7b81dfbb AJ |
3401 | base_got->contents + off); |
3402 | /* Note that this is harmless for the GOTPLT64 case, | |
eed180f8 | 3403 | as -1 | 1 still is -1. */ |
51e0a107 JH |
3404 | h->got.offset |= 1; |
3405 | } | |
3406 | } | |
053579d7 | 3407 | else |
b34976b6 | 3408 | unresolved_reloc = FALSE; |
70256ad8 | 3409 | } |
51e0a107 JH |
3410 | else |
3411 | { | |
c434dee6 AJ |
3412 | if (local_got_offsets == NULL) |
3413 | abort (); | |
51e0a107 JH |
3414 | |
3415 | off = local_got_offsets[r_symndx]; | |
3416 | ||
3417 | /* The offset must always be a multiple of 8. We use | |
407443a3 AJ |
3418 | the least significant bit to record whether we have |
3419 | already generated the necessary reloc. */ | |
51e0a107 JH |
3420 | if ((off & 1) != 0) |
3421 | off &= ~1; | |
3422 | else | |
3423 | { | |
c434dee6 | 3424 | bfd_put_64 (output_bfd, relocation, |
7b81dfbb | 3425 | base_got->contents + off); |
51e0a107 JH |
3426 | |
3427 | if (info->shared) | |
3428 | { | |
947216bf | 3429 | asection *s; |
51e0a107 | 3430 | Elf_Internal_Rela outrel; |
70256ad8 | 3431 | |
51e0a107 JH |
3432 | /* We need to generate a R_X86_64_RELATIVE reloc |
3433 | for the dynamic linker. */ | |
6de2ae4a | 3434 | s = htab->elf.srelgot; |
947216bf | 3435 | if (s == NULL) |
c434dee6 | 3436 | abort (); |
51e0a107 | 3437 | |
7b81dfbb AJ |
3438 | outrel.r_offset = (base_got->output_section->vma |
3439 | + base_got->output_offset | |
51e0a107 | 3440 | + off); |
351f65ca | 3441 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
51e0a107 | 3442 | outrel.r_addend = relocation; |
351f65ca | 3443 | elf_append_rela (output_bfd, s, &outrel); |
51e0a107 JH |
3444 | } |
3445 | ||
3446 | local_got_offsets[r_symndx] |= 1; | |
3447 | } | |
51e0a107 | 3448 | } |
6a2bda3f | 3449 | |
c434dee6 AJ |
3450 | if (off >= (bfd_vma) -2) |
3451 | abort (); | |
3452 | ||
7b81dfbb AJ |
3453 | relocation = base_got->output_section->vma |
3454 | + base_got->output_offset + off; | |
3455 | if (r_type != R_X86_64_GOTPCREL && r_type != R_X86_64_GOTPCREL64) | |
6de2ae4a L |
3456 | relocation -= htab->elf.sgotplt->output_section->vma |
3457 | - htab->elf.sgotplt->output_offset; | |
c434dee6 | 3458 | |
70256ad8 AJ |
3459 | break; |
3460 | ||
d6ab8113 JB |
3461 | case R_X86_64_GOTOFF64: |
3462 | /* Relocation is relative to the start of the global offset | |
3463 | table. */ | |
3464 | ||
3465 | /* Check to make sure it isn't a protected function symbol | |
3466 | for shared library since it may not be local when used | |
3467 | as function address. */ | |
bdb892b9 | 3468 | if (!info->executable |
d6ab8113 | 3469 | && h |
bdb892b9 | 3470 | && !SYMBOLIC_BIND (info, h) |
d6ab8113 JB |
3471 | && h->def_regular |
3472 | && h->type == STT_FUNC | |
3473 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
3474 | { | |
3475 | (*_bfd_error_handler) | |
3476 | (_("%B: relocation R_X86_64_GOTOFF64 against protected function `%s' can not be used when making a shared object"), | |
3477 | input_bfd, h->root.root.string); | |
3478 | bfd_set_error (bfd_error_bad_value); | |
3479 | return FALSE; | |
3480 | } | |
3481 | ||
3482 | /* Note that sgot is not involved in this | |
3483 | calculation. We always want the start of .got.plt. If we | |
3484 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
3485 | permitted by the ABI, we might have to change this | |
3486 | calculation. */ | |
6de2ae4a L |
3487 | relocation -= htab->elf.sgotplt->output_section->vma |
3488 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
3489 | break; |
3490 | ||
3491 | case R_X86_64_GOTPC32: | |
7b81dfbb | 3492 | case R_X86_64_GOTPC64: |
d6ab8113 | 3493 | /* Use global offset table as symbol value. */ |
6de2ae4a L |
3494 | relocation = htab->elf.sgotplt->output_section->vma |
3495 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
3496 | unresolved_reloc = FALSE; |
3497 | break; | |
7b81dfbb AJ |
3498 | |
3499 | case R_X86_64_PLTOFF64: | |
3500 | /* Relocation is PLT entry relative to GOT. For local | |
3501 | symbols it's the symbol itself relative to GOT. */ | |
eed180f8 | 3502 | if (h != NULL |
7b81dfbb AJ |
3503 | /* See PLT32 handling. */ |
3504 | && h->plt.offset != (bfd_vma) -1 | |
6de2ae4a | 3505 | && htab->elf.splt != NULL) |
7b81dfbb | 3506 | { |
6de2ae4a L |
3507 | relocation = (htab->elf.splt->output_section->vma |
3508 | + htab->elf.splt->output_offset | |
7b81dfbb AJ |
3509 | + h->plt.offset); |
3510 | unresolved_reloc = FALSE; | |
3511 | } | |
3512 | ||
6de2ae4a L |
3513 | relocation -= htab->elf.sgotplt->output_section->vma |
3514 | + htab->elf.sgotplt->output_offset; | |
7b81dfbb | 3515 | break; |
d6ab8113 | 3516 | |
70256ad8 AJ |
3517 | case R_X86_64_PLT32: |
3518 | /* Relocation is to the entry for this symbol in the | |
3519 | procedure linkage table. */ | |
3520 | ||
3521 | /* Resolve a PLT32 reloc against a local symbol directly, | |
407443a3 | 3522 | without using the procedure linkage table. */ |
70256ad8 AJ |
3523 | if (h == NULL) |
3524 | break; | |
3525 | ||
c434dee6 | 3526 | if (h->plt.offset == (bfd_vma) -1 |
6de2ae4a | 3527 | || htab->elf.splt == NULL) |
70256ad8 AJ |
3528 | { |
3529 | /* We didn't make a PLT entry for this symbol. This | |
407443a3 AJ |
3530 | happens when statically linking PIC code, or when |
3531 | using -Bsymbolic. */ | |
70256ad8 AJ |
3532 | break; |
3533 | } | |
3534 | ||
6de2ae4a L |
3535 | relocation = (htab->elf.splt->output_section->vma |
3536 | + htab->elf.splt->output_offset | |
70256ad8 | 3537 | + h->plt.offset); |
b34976b6 | 3538 | unresolved_reloc = FALSE; |
70256ad8 AJ |
3539 | break; |
3540 | ||
fd8ab9e5 AJ |
3541 | case R_X86_64_PC8: |
3542 | case R_X86_64_PC16: | |
3543 | case R_X86_64_PC32: | |
6610a52d | 3544 | if (info->shared |
ba3bee0b | 3545 | && (input_section->flags & SEC_ALLOC) != 0 |
90f487df | 3546 | && (input_section->flags & SEC_READONLY) != 0 |
41bed6dd | 3547 | && h != NULL) |
6610a52d | 3548 | { |
41bed6dd L |
3549 | bfd_boolean fail = FALSE; |
3550 | bfd_boolean branch | |
3551 | = (r_type == R_X86_64_PC32 | |
3552 | && is_32bit_relative_branch (contents, rel->r_offset)); | |
3553 | ||
3554 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
3555 | { | |
3556 | /* Symbol is referenced locally. Make sure it is | |
3557 | defined locally or for a branch. */ | |
3558 | fail = !h->def_regular && !branch; | |
3559 | } | |
90f487df | 3560 | else |
41bed6dd L |
3561 | { |
3562 | /* Symbol isn't referenced locally. We only allow | |
3563 | branch to symbol with non-default visibility. */ | |
3564 | fail = (!branch | |
3565 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT); | |
3566 | } | |
3567 | ||
3568 | if (fail) | |
3569 | { | |
3570 | const char *fmt; | |
3571 | const char *v; | |
3572 | const char *pic = ""; | |
3573 | ||
3574 | switch (ELF_ST_VISIBILITY (h->other)) | |
3575 | { | |
3576 | case STV_HIDDEN: | |
3577 | v = _("hidden symbol"); | |
3578 | break; | |
3579 | case STV_INTERNAL: | |
3580 | v = _("internal symbol"); | |
3581 | break; | |
3582 | case STV_PROTECTED: | |
3583 | v = _("protected symbol"); | |
3584 | break; | |
3585 | default: | |
3586 | v = _("symbol"); | |
3587 | pic = _("; recompile with -fPIC"); | |
3588 | break; | |
3589 | } | |
3590 | ||
3591 | if (h->def_regular) | |
3592 | fmt = _("%B: relocation %s against %s `%s' can not be used when making a shared object%s"); | |
3593 | else | |
3594 | fmt = _("%B: relocation %s against undefined %s `%s' can not be used when making a shared object%s"); | |
3595 | ||
3596 | (*_bfd_error_handler) (fmt, input_bfd, | |
3597 | x86_64_elf_howto_table[r_type].name, | |
3598 | v, h->root.root.string, pic); | |
3599 | bfd_set_error (bfd_error_bad_value); | |
3600 | return FALSE; | |
3601 | } | |
6610a52d L |
3602 | } |
3603 | /* Fall through. */ | |
3604 | ||
70256ad8 AJ |
3605 | case R_X86_64_8: |
3606 | case R_X86_64_16: | |
3607 | case R_X86_64_32: | |
d6ab8113 | 3608 | case R_X86_64_PC64: |
6b3db546 | 3609 | case R_X86_64_64: |
80643fbc | 3610 | /* FIXME: The ABI says the linker should make sure the value is |
407443a3 | 3611 | the same when it's zeroextended to 64 bit. */ |
c434dee6 | 3612 | |
b1e24c02 | 3613 | if ((input_section->flags & SEC_ALLOC) == 0) |
c434dee6 AJ |
3614 | break; |
3615 | ||
3616 | if ((info->shared | |
4bc6e03a AJ |
3617 | && (h == NULL |
3618 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3619 | || h->root.type != bfd_link_hash_undefweak) | |
d8045f23 NC |
3620 | && (! IS_X86_64_PCREL_TYPE (r_type) |
3621 | || ! SYMBOL_CALLS_LOCAL (info, h))) | |
d40d037c AJ |
3622 | || (ELIMINATE_COPY_RELOCS |
3623 | && !info->shared | |
c434dee6 AJ |
3624 | && h != NULL |
3625 | && h->dynindx != -1 | |
f5385ebf AM |
3626 | && !h->non_got_ref |
3627 | && ((h->def_dynamic | |
3628 | && !h->def_regular) | |
c434dee6 | 3629 | || h->root.type == bfd_link_hash_undefweak |
0f88be7a | 3630 | || h->root.type == bfd_link_hash_undefined))) |
70256ad8 AJ |
3631 | { |
3632 | Elf_Internal_Rela outrel; | |
b34976b6 | 3633 | bfd_boolean skip, relocate; |
c434dee6 | 3634 | asection *sreloc; |
70256ad8 AJ |
3635 | |
3636 | /* When generating a shared object, these relocations | |
3637 | are copied into the output file to be resolved at run | |
407443a3 | 3638 | time. */ |
b34976b6 AM |
3639 | skip = FALSE; |
3640 | relocate = FALSE; | |
70256ad8 | 3641 | |
c629eae0 JJ |
3642 | outrel.r_offset = |
3643 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
c434dee6 | 3644 | rel->r_offset); |
c629eae0 | 3645 | if (outrel.r_offset == (bfd_vma) -1) |
b34976b6 | 3646 | skip = TRUE; |
0fb19cbc | 3647 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3648 | skip = TRUE, relocate = TRUE; |
70256ad8 AJ |
3649 | |
3650 | outrel.r_offset += (input_section->output_section->vma | |
3651 | + input_section->output_offset); | |
3652 | ||
3653 | if (skip) | |
0bb2d96a | 3654 | memset (&outrel, 0, sizeof outrel); |
c434dee6 | 3655 | |
fd8ab9e5 AJ |
3656 | /* h->dynindx may be -1 if this symbol was marked to |
3657 | become local. */ | |
3658 | else if (h != NULL | |
c434dee6 | 3659 | && h->dynindx != -1 |
d8045f23 NC |
3660 | && (IS_X86_64_PCREL_TYPE (r_type) |
3661 | || ! info->shared | |
3662 | || ! SYMBOLIC_BIND (info, h) | |
3663 | || ! h->def_regular)) | |
70256ad8 | 3664 | { |
351f65ca | 3665 | outrel.r_info = htab->r_info (h->dynindx, r_type); |
c434dee6 | 3666 | outrel.r_addend = rel->r_addend; |
70256ad8 AJ |
3667 | } |
3668 | else | |
3669 | { | |
c434dee6 | 3670 | /* This symbol is local, or marked to become local. */ |
248775ba | 3671 | if (r_type == htab->pointer_r_type) |
607c0e09 | 3672 | { |
b34976b6 | 3673 | relocate = TRUE; |
351f65ca | 3674 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
607c0e09 AS |
3675 | outrel.r_addend = relocation + rel->r_addend; |
3676 | } | |
64d25c44 L |
3677 | else if (r_type == R_X86_64_64 |
3678 | && !ABI_64_P (output_bfd)) | |
3679 | { | |
3680 | relocate = TRUE; | |
3681 | outrel.r_info = htab->r_info (0, | |
3682 | R_X86_64_RELATIVE64); | |
3683 | outrel.r_addend = relocation + rel->r_addend; | |
3684 | } | |
607c0e09 AS |
3685 | else |
3686 | { | |
3687 | long sindx; | |
3688 | ||
8517fae7 | 3689 | if (bfd_is_abs_section (sec)) |
607c0e09 AS |
3690 | sindx = 0; |
3691 | else if (sec == NULL || sec->owner == NULL) | |
3692 | { | |
3693 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3694 | return FALSE; |
607c0e09 AS |
3695 | } |
3696 | else | |
3697 | { | |
3698 | asection *osec; | |
3699 | ||
74541ad4 AM |
3700 | /* We are turning this relocation into one |
3701 | against a section symbol. It would be | |
3702 | proper to subtract the symbol's value, | |
3703 | osec->vma, from the emitted reloc addend, | |
3704 | but ld.so expects buggy relocs. */ | |
607c0e09 AS |
3705 | osec = sec->output_section; |
3706 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
3707 | if (sindx == 0) |
3708 | { | |
3709 | asection *oi = htab->elf.text_index_section; | |
3710 | sindx = elf_section_data (oi)->dynindx; | |
3711 | } | |
3712 | BFD_ASSERT (sindx != 0); | |
607c0e09 AS |
3713 | } |
3714 | ||
351f65ca | 3715 | outrel.r_info = htab->r_info (sindx, r_type); |
607c0e09 AS |
3716 | outrel.r_addend = relocation + rel->r_addend; |
3717 | } | |
70256ad8 AJ |
3718 | } |
3719 | ||
cbe950e9 | 3720 | sreloc = elf_section_data (input_section)->sreloc; |
d8045f23 | 3721 | |
62d78908 L |
3722 | if (sreloc == NULL || sreloc->contents == NULL) |
3723 | { | |
3724 | r = bfd_reloc_notsupported; | |
3725 | goto check_relocation_error; | |
3726 | } | |
c434dee6 | 3727 | |
351f65ca | 3728 | elf_append_rela (output_bfd, sreloc, &outrel); |
70256ad8 AJ |
3729 | |
3730 | /* If this reloc is against an external symbol, we do | |
3731 | not want to fiddle with the addend. Otherwise, we | |
3732 | need to include the symbol value so that it becomes | |
3733 | an addend for the dynamic reloc. */ | |
0f88be7a | 3734 | if (! relocate) |
70256ad8 AJ |
3735 | continue; |
3736 | } | |
3737 | ||
3738 | break; | |
3739 | ||
bffbf940 | 3740 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
3741 | case R_X86_64_GOTPC32_TLSDESC: |
3742 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 3743 | case R_X86_64_GOTTPOFF: |
bffbf940 JJ |
3744 | tls_type = GOT_UNKNOWN; |
3745 | if (h == NULL && local_got_offsets) | |
351f65ca | 3746 | tls_type = elf_x86_64_local_got_tls_type (input_bfd) [r_symndx]; |
bffbf940 | 3747 | else if (h != NULL) |
351f65ca | 3748 | tls_type = elf_x86_64_hash_entry (h)->tls_type; |
142411ca | 3749 | |
351f65ca L |
3750 | if (! elf_x86_64_tls_transition (info, input_bfd, |
3751 | input_section, contents, | |
3752 | symtab_hdr, sym_hashes, | |
3753 | &r_type, tls_type, rel, | |
3754 | relend, h, r_symndx)) | |
534a31f6 | 3755 | return FALSE; |
bffbf940 JJ |
3756 | |
3757 | if (r_type == R_X86_64_TPOFF32) | |
3758 | { | |
142411ca L |
3759 | bfd_vma roff = rel->r_offset; |
3760 | ||
bffbf940 | 3761 | BFD_ASSERT (! unresolved_reloc); |
142411ca | 3762 | |
351f65ca | 3763 | if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD) |
bffbf940 | 3764 | { |
52bc799a | 3765 | /* GD->LE transition. For 64bit, change |
abcf1d52 | 3766 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
a3fadc9a | 3767 | .word 0x6666; rex64; call __tls_get_addr |
52bc799a | 3768 | into: |
bffbf940 | 3769 | movq %fs:0, %rax |
52bc799a L |
3770 | leaq foo@tpoff(%rax), %rax |
3771 | For 32bit, change | |
3772 | leaq foo@tlsgd(%rip), %rdi | |
3773 | .word 0x6666; rex64; call __tls_get_addr | |
3774 | into: | |
3775 | movl %fs:0, %eax | |
bffbf940 | 3776 | leaq foo@tpoff(%rax), %rax */ |
52bc799a L |
3777 | if (ABI_64_P (output_bfd)) |
3778 | memcpy (contents + roff - 4, | |
3779 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", | |
3780 | 16); | |
3781 | else | |
3782 | memcpy (contents + roff - 3, | |
3783 | "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", | |
3784 | 15); | |
eb4ff4d6 | 3785 | bfd_put_32 (output_bfd, |
351f65ca | 3786 | elf_x86_64_tpoff (info, relocation), |
142411ca | 3787 | contents + roff + 8); |
a3fadc9a | 3788 | /* Skip R_X86_64_PC32/R_X86_64_PLT32. */ |
bffbf940 JJ |
3789 | rel++; |
3790 | continue; | |
3791 | } | |
351f65ca | 3792 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC) |
67a4f2b7 AO |
3793 | { |
3794 | /* GDesc -> LE transition. | |
3795 | It's originally something like: | |
3796 | leaq x@tlsdesc(%rip), %rax | |
3797 | ||
3798 | Change it to: | |
c9736ba0 | 3799 | movl $x@tpoff, %rax. */ |
67a4f2b7 | 3800 | |
c9736ba0 | 3801 | unsigned int val, type; |
67a4f2b7 | 3802 | |
67a4f2b7 | 3803 | type = bfd_get_8 (input_bfd, contents + roff - 3); |
67a4f2b7 | 3804 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
3805 | bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1), |
3806 | contents + roff - 3); | |
3807 | bfd_put_8 (output_bfd, 0xc7, contents + roff - 2); | |
3808 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3809 | contents + roff - 1); | |
eb4ff4d6 | 3810 | bfd_put_32 (output_bfd, |
351f65ca | 3811 | elf_x86_64_tpoff (info, relocation), |
67a4f2b7 AO |
3812 | contents + roff); |
3813 | continue; | |
3814 | } | |
351f65ca | 3815 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL) |
67a4f2b7 AO |
3816 | { |
3817 | /* GDesc -> LE transition. | |
3818 | It's originally: | |
3819 | call *(%rax) | |
3820 | Turn it into: | |
142411ca | 3821 | xchg %ax,%ax. */ |
10efb593 | 3822 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
3823 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3824 | continue; | |
3825 | } | |
351f65ca | 3826 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTTPOFF) |
bffbf940 | 3827 | { |
bffbf940 JJ |
3828 | /* IE->LE transition: |
3829 | Originally it can be one of: | |
3830 | movq foo@gottpoff(%rip), %reg | |
3831 | addq foo@gottpoff(%rip), %reg | |
3832 | We change it into: | |
3833 | movq $foo, %reg | |
3834 | leaq foo(%reg), %reg | |
3835 | addq $foo, %reg. */ | |
142411ca L |
3836 | |
3837 | unsigned int val, type, reg; | |
3838 | ||
3839 | val = bfd_get_8 (input_bfd, contents + roff - 3); | |
3840 | type = bfd_get_8 (input_bfd, contents + roff - 2); | |
3841 | reg = bfd_get_8 (input_bfd, contents + roff - 1); | |
bffbf940 | 3842 | reg >>= 3; |
bffbf940 JJ |
3843 | if (type == 0x8b) |
3844 | { | |
3845 | /* movq */ | |
3846 | if (val == 0x4c) | |
3847 | bfd_put_8 (output_bfd, 0x49, | |
142411ca | 3848 | contents + roff - 3); |
4a4c5f25 L |
3849 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
3850 | bfd_put_8 (output_bfd, 0x41, | |
3851 | contents + roff - 3); | |
bffbf940 | 3852 | bfd_put_8 (output_bfd, 0xc7, |
142411ca | 3853 | contents + roff - 2); |
bffbf940 | 3854 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 3855 | contents + roff - 1); |
bffbf940 JJ |
3856 | } |
3857 | else if (reg == 4) | |
3858 | { | |
3859 | /* addq -> addq - addressing with %rsp/%r12 is | |
3860 | special */ | |
3861 | if (val == 0x4c) | |
3862 | bfd_put_8 (output_bfd, 0x49, | |
142411ca | 3863 | contents + roff - 3); |
4a4c5f25 L |
3864 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
3865 | bfd_put_8 (output_bfd, 0x41, | |
3866 | contents + roff - 3); | |
bffbf940 | 3867 | bfd_put_8 (output_bfd, 0x81, |
142411ca | 3868 | contents + roff - 2); |
bffbf940 | 3869 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 3870 | contents + roff - 1); |
bffbf940 JJ |
3871 | } |
3872 | else | |
3873 | { | |
3874 | /* addq -> leaq */ | |
3875 | if (val == 0x4c) | |
3876 | bfd_put_8 (output_bfd, 0x4d, | |
142411ca | 3877 | contents + roff - 3); |
4a4c5f25 L |
3878 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
3879 | bfd_put_8 (output_bfd, 0x45, | |
3880 | contents + roff - 3); | |
bffbf940 | 3881 | bfd_put_8 (output_bfd, 0x8d, |
142411ca | 3882 | contents + roff - 2); |
bffbf940 | 3883 | bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3), |
142411ca | 3884 | contents + roff - 1); |
bffbf940 | 3885 | } |
eb4ff4d6 | 3886 | bfd_put_32 (output_bfd, |
351f65ca | 3887 | elf_x86_64_tpoff (info, relocation), |
142411ca | 3888 | contents + roff); |
bffbf940 JJ |
3889 | continue; |
3890 | } | |
142411ca L |
3891 | else |
3892 | BFD_ASSERT (FALSE); | |
bffbf940 JJ |
3893 | } |
3894 | ||
6de2ae4a | 3895 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
3896 | abort (); |
3897 | ||
3898 | if (h != NULL) | |
67a4f2b7 AO |
3899 | { |
3900 | off = h->got.offset; | |
351f65ca | 3901 | offplt = elf_x86_64_hash_entry (h)->tlsdesc_got; |
67a4f2b7 | 3902 | } |
bffbf940 JJ |
3903 | else |
3904 | { | |
3905 | if (local_got_offsets == NULL) | |
3906 | abort (); | |
3907 | ||
3908 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3909 | offplt = local_tlsdesc_gotents[r_symndx]; |
bffbf940 JJ |
3910 | } |
3911 | ||
3912 | if ((off & 1) != 0) | |
3913 | off &= ~1; | |
26e41594 | 3914 | else |
bffbf940 JJ |
3915 | { |
3916 | Elf_Internal_Rela outrel; | |
bffbf940 | 3917 | int dr_type, indx; |
67a4f2b7 | 3918 | asection *sreloc; |
bffbf940 | 3919 | |
6de2ae4a | 3920 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
3921 | abort (); |
3922 | ||
67a4f2b7 AO |
3923 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
3924 | ||
3925 | if (GOT_TLS_GDESC_P (tls_type)) | |
3926 | { | |
351f65ca | 3927 | outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC); |
67a4f2b7 | 3928 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt |
6de2ae4a L |
3929 | + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size); |
3930 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
3931 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3932 | + offplt |
3933 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 3934 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 3935 | if (indx == 0) |
351f65ca | 3936 | outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info); |
67a4f2b7 AO |
3937 | else |
3938 | outrel.r_addend = 0; | |
351f65ca | 3939 | elf_append_rela (output_bfd, sreloc, &outrel); |
67a4f2b7 AO |
3940 | } |
3941 | ||
6de2ae4a | 3942 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 3943 | |
6de2ae4a L |
3944 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3945 | + htab->elf.sgot->output_offset + off); | |
bffbf940 | 3946 | |
67a4f2b7 | 3947 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 | 3948 | dr_type = R_X86_64_DTPMOD64; |
67a4f2b7 AO |
3949 | else if (GOT_TLS_GDESC_P (tls_type)) |
3950 | goto dr_done; | |
bffbf940 JJ |
3951 | else |
3952 | dr_type = R_X86_64_TPOFF64; | |
3953 | ||
6de2ae4a | 3954 | bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off); |
bffbf940 | 3955 | outrel.r_addend = 0; |
67a4f2b7 AO |
3956 | if ((dr_type == R_X86_64_TPOFF64 |
3957 | || dr_type == R_X86_64_TLSDESC) && indx == 0) | |
351f65ca L |
3958 | outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info); |
3959 | outrel.r_info = htab->r_info (indx, dr_type); | |
bffbf940 | 3960 | |
351f65ca | 3961 | elf_append_rela (output_bfd, sreloc, &outrel); |
bffbf940 | 3962 | |
67a4f2b7 | 3963 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 JJ |
3964 | { |
3965 | if (indx == 0) | |
3966 | { | |
d40d037c | 3967 | BFD_ASSERT (! unresolved_reloc); |
bffbf940 | 3968 | bfd_put_64 (output_bfd, |
351f65ca | 3969 | relocation - elf_x86_64_dtpoff_base (info), |
6de2ae4a | 3970 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
bffbf940 JJ |
3971 | } |
3972 | else | |
3973 | { | |
3974 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 3975 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
351f65ca | 3976 | outrel.r_info = htab->r_info (indx, |
bffbf940 JJ |
3977 | R_X86_64_DTPOFF64); |
3978 | outrel.r_offset += GOT_ENTRY_SIZE; | |
351f65ca | 3979 | elf_append_rela (output_bfd, sreloc, |
464d3bd4 | 3980 | &outrel); |
bffbf940 JJ |
3981 | } |
3982 | } | |
3983 | ||
67a4f2b7 | 3984 | dr_done: |
bffbf940 JJ |
3985 | if (h != NULL) |
3986 | h->got.offset |= 1; | |
3987 | else | |
3988 | local_got_offsets[r_symndx] |= 1; | |
3989 | } | |
3990 | ||
67a4f2b7 AO |
3991 | if (off >= (bfd_vma) -2 |
3992 | && ! GOT_TLS_GDESC_P (tls_type)) | |
bffbf940 | 3993 | abort (); |
351f65ca | 3994 | if (r_type == ELF32_R_TYPE (rel->r_info)) |
bffbf940 | 3995 | { |
67a4f2b7 AO |
3996 | if (r_type == R_X86_64_GOTPC32_TLSDESC |
3997 | || r_type == R_X86_64_TLSDESC_CALL) | |
6de2ae4a L |
3998 | relocation = htab->elf.sgotplt->output_section->vma |
3999 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
4000 | + offplt + htab->sgotplt_jump_table_size; |
4001 | else | |
6de2ae4a L |
4002 | relocation = htab->elf.sgot->output_section->vma |
4003 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 4004 | unresolved_reloc = FALSE; |
bffbf940 | 4005 | } |
142411ca | 4006 | else |
67a4f2b7 | 4007 | { |
142411ca | 4008 | bfd_vma roff = rel->r_offset; |
67a4f2b7 | 4009 | |
351f65ca | 4010 | if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD) |
142411ca | 4011 | { |
52bc799a | 4012 | /* GD->IE transition. For 64bit, change |
142411ca L |
4013 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
4014 | .word 0x6666; rex64; call __tls_get_addr@plt | |
52bc799a | 4015 | into: |
142411ca | 4016 | movq %fs:0, %rax |
52bc799a L |
4017 | addq foo@gottpoff(%rip), %rax |
4018 | For 32bit, change | |
4019 | leaq foo@tlsgd(%rip), %rdi | |
4020 | .word 0x6666; rex64; call __tls_get_addr@plt | |
4021 | into: | |
4022 | movl %fs:0, %eax | |
142411ca | 4023 | addq foo@gottpoff(%rip), %rax */ |
52bc799a L |
4024 | if (ABI_64_P (output_bfd)) |
4025 | memcpy (contents + roff - 4, | |
4026 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
4027 | 16); | |
4028 | else | |
4029 | memcpy (contents + roff - 3, | |
4030 | "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
4031 | 15); | |
142411ca | 4032 | |
6de2ae4a L |
4033 | relocation = (htab->elf.sgot->output_section->vma |
4034 | + htab->elf.sgot->output_offset + off | |
142411ca L |
4035 | - roff |
4036 | - input_section->output_section->vma | |
4037 | - input_section->output_offset | |
4038 | - 12); | |
4039 | bfd_put_32 (output_bfd, relocation, | |
4040 | contents + roff + 8); | |
4041 | /* Skip R_X86_64_PLT32. */ | |
4042 | rel++; | |
4043 | continue; | |
4044 | } | |
351f65ca | 4045 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC) |
142411ca L |
4046 | { |
4047 | /* GDesc -> IE transition. | |
4048 | It's originally something like: | |
4049 | leaq x@tlsdesc(%rip), %rax | |
67a4f2b7 | 4050 | |
142411ca | 4051 | Change it to: |
c9736ba0 | 4052 | movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */ |
67a4f2b7 | 4053 | |
142411ca L |
4054 | /* Now modify the instruction as appropriate. To |
4055 | turn a leaq into a movq in the form we use it, it | |
4056 | suffices to change the second byte from 0x8d to | |
4057 | 0x8b. */ | |
4058 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
4059 | ||
4060 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4061 | htab->elf.sgot->output_section->vma |
4062 | + htab->elf.sgot->output_offset + off | |
142411ca L |
4063 | - rel->r_offset |
4064 | - input_section->output_section->vma | |
4065 | - input_section->output_offset | |
4066 | - 4, | |
4067 | contents + roff); | |
4068 | continue; | |
4069 | } | |
351f65ca | 4070 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL) |
142411ca L |
4071 | { |
4072 | /* GDesc -> IE transition. | |
4073 | It's originally: | |
4074 | call *(%rax) | |
4075 | ||
4076 | Change it to: | |
c9736ba0 | 4077 | xchg %ax, %ax. */ |
142411ca | 4078 | |
142411ca L |
4079 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
4080 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); | |
4081 | continue; | |
4082 | } | |
4083 | else | |
4084 | BFD_ASSERT (FALSE); | |
67a4f2b7 | 4085 | } |
bffbf940 JJ |
4086 | break; |
4087 | ||
4088 | case R_X86_64_TLSLD: | |
351f65ca L |
4089 | if (! elf_x86_64_tls_transition (info, input_bfd, |
4090 | input_section, contents, | |
4091 | symtab_hdr, sym_hashes, | |
4092 | &r_type, GOT_UNKNOWN, | |
4093 | rel, relend, h, r_symndx)) | |
142411ca | 4094 | return FALSE; |
a3fadc9a | 4095 | |
142411ca L |
4096 | if (r_type != R_X86_64_TLSLD) |
4097 | { | |
bffbf940 | 4098 | /* LD->LE transition: |
a3fadc9a | 4099 | leaq foo@tlsld(%rip), %rdi; call __tls_get_addr. |
52bc799a L |
4100 | For 64bit, we change it into: |
4101 | .word 0x6666; .byte 0x66; movq %fs:0, %rax. | |
4102 | For 32bit, we change it into: | |
4103 | nopl 0x0(%rax); movl %fs:0, %eax. */ | |
142411ca L |
4104 | |
4105 | BFD_ASSERT (r_type == R_X86_64_TPOFF32); | |
52bc799a L |
4106 | if (ABI_64_P (output_bfd)) |
4107 | memcpy (contents + rel->r_offset - 3, | |
4108 | "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12); | |
4109 | else | |
4110 | memcpy (contents + rel->r_offset - 3, | |
4111 | "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12); | |
a3fadc9a | 4112 | /* Skip R_X86_64_PC32/R_X86_64_PLT32. */ |
bffbf940 JJ |
4113 | rel++; |
4114 | continue; | |
4115 | } | |
4116 | ||
6de2ae4a | 4117 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
4118 | abort (); |
4119 | ||
4120 | off = htab->tls_ld_got.offset; | |
4121 | if (off & 1) | |
4122 | off &= ~1; | |
4123 | else | |
4124 | { | |
4125 | Elf_Internal_Rela outrel; | |
bffbf940 | 4126 | |
6de2ae4a | 4127 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
4128 | abort (); |
4129 | ||
6de2ae4a L |
4130 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
4131 | + htab->elf.sgot->output_offset + off); | |
bffbf940 JJ |
4132 | |
4133 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 4134 | htab->elf.sgot->contents + off); |
bffbf940 | 4135 | bfd_put_64 (output_bfd, 0, |
6de2ae4a | 4136 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
351f65ca | 4137 | outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64); |
bffbf940 | 4138 | outrel.r_addend = 0; |
351f65ca | 4139 | elf_append_rela (output_bfd, htab->elf.srelgot, |
464d3bd4 | 4140 | &outrel); |
bffbf940 JJ |
4141 | htab->tls_ld_got.offset |= 1; |
4142 | } | |
6de2ae4a L |
4143 | relocation = htab->elf.sgot->output_section->vma |
4144 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 4145 | unresolved_reloc = FALSE; |
bffbf940 JJ |
4146 | break; |
4147 | ||
4148 | case R_X86_64_DTPOFF32: | |
1d85728f | 4149 | if (!info->executable|| (input_section->flags & SEC_CODE) == 0) |
351f65ca | 4150 | relocation -= elf_x86_64_dtpoff_base (info); |
bffbf940 | 4151 | else |
351f65ca | 4152 | relocation = elf_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
4153 | break; |
4154 | ||
4155 | case R_X86_64_TPOFF32: | |
6769d501 | 4156 | case R_X86_64_TPOFF64: |
9b769489 | 4157 | BFD_ASSERT (info->executable); |
351f65ca | 4158 | relocation = elf_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
4159 | break; |
4160 | ||
70256ad8 AJ |
4161 | default: |
4162 | break; | |
4163 | } | |
8d88c4ca | 4164 | |
239e1f3a AM |
4165 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
4166 | because such sections are not SEC_ALLOC and thus ld.so will | |
4167 | not process them. */ | |
c434dee6 | 4168 | if (unresolved_reloc |
239e1f3a | 4169 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
4170 | && h->def_dynamic) |
4171 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
4172 | rel->r_offset) != (bfd_vma) -1) | |
c434dee6 | 4173 | (*_bfd_error_handler) |
843fe662 | 4174 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
4175 | input_bfd, |
4176 | input_section, | |
c434dee6 | 4177 | (long) rel->r_offset, |
843fe662 | 4178 | howto->name, |
c434dee6 AJ |
4179 | h->root.root.string); |
4180 | ||
cbe950e9 | 4181 | do_relocation: |
8d88c4ca | 4182 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
c434dee6 AJ |
4183 | contents, rel->r_offset, |
4184 | relocation, rel->r_addend); | |
8d88c4ca | 4185 | |
62d78908 | 4186 | check_relocation_error: |
8d88c4ca | 4187 | if (r != bfd_reloc_ok) |
8da6118f | 4188 | { |
c434dee6 AJ |
4189 | const char *name; |
4190 | ||
4191 | if (h != NULL) | |
4192 | name = h->root.root.string; | |
4193 | else | |
8da6118f | 4194 | { |
c434dee6 AJ |
4195 | name = bfd_elf_string_from_elf_section (input_bfd, |
4196 | symtab_hdr->sh_link, | |
4197 | sym->st_name); | |
4198 | if (name == NULL) | |
b34976b6 | 4199 | return FALSE; |
c434dee6 AJ |
4200 | if (*name == '\0') |
4201 | name = bfd_section_name (input_bfd, sec); | |
4202 | } | |
4203 | ||
4204 | if (r == bfd_reloc_overflow) | |
4205 | { | |
c434dee6 | 4206 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
4207 | (info, (h ? &h->root : NULL), name, howto->name, |
4208 | (bfd_vma) 0, input_bfd, input_section, | |
4209 | rel->r_offset))) | |
b34976b6 | 4210 | return FALSE; |
c434dee6 AJ |
4211 | } |
4212 | else | |
4213 | { | |
4214 | (*_bfd_error_handler) | |
bb95161d | 4215 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
d003868e | 4216 | input_bfd, input_section, |
c434dee6 | 4217 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 4218 | return FALSE; |
8da6118f KH |
4219 | } |
4220 | } | |
8d88c4ca | 4221 | } |
70256ad8 | 4222 | |
b34976b6 | 4223 | return TRUE; |
70256ad8 AJ |
4224 | } |
4225 | ||
4226 | /* Finish up dynamic symbol handling. We set the contents of various | |
4227 | dynamic sections here. */ | |
4228 | ||
b34976b6 | 4229 | static bfd_boolean |
351f65ca L |
4230 | elf_x86_64_finish_dynamic_symbol (bfd *output_bfd, |
4231 | struct bfd_link_info *info, | |
4232 | struct elf_link_hash_entry *h, | |
4233 | Elf_Internal_Sym *sym) | |
70256ad8 | 4234 | { |
351f65ca | 4235 | struct elf_x86_64_link_hash_table *htab; |
eed180f8 RM |
4236 | const struct elf_x86_64_backend_data *const abed |
4237 | = get_elf_x86_64_backend_data (output_bfd); | |
70256ad8 | 4238 | |
351f65ca | 4239 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
4240 | if (htab == NULL) |
4241 | return FALSE; | |
70256ad8 AJ |
4242 | |
4243 | if (h->plt.offset != (bfd_vma) -1) | |
4244 | { | |
70256ad8 AJ |
4245 | bfd_vma plt_index; |
4246 | bfd_vma got_offset; | |
4247 | Elf_Internal_Rela rela; | |
947216bf | 4248 | bfd_byte *loc; |
cbe950e9 | 4249 | asection *plt, *gotplt, *relplt; |
351f65ca | 4250 | const struct elf_backend_data *bed; |
cbe950e9 L |
4251 | |
4252 | /* When building a static executable, use .iplt, .igot.plt and | |
4253 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 4254 | if (htab->elf.splt != NULL) |
cbe950e9 | 4255 | { |
6de2ae4a L |
4256 | plt = htab->elf.splt; |
4257 | gotplt = htab->elf.sgotplt; | |
4258 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
4259 | } |
4260 | else | |
4261 | { | |
6de2ae4a L |
4262 | plt = htab->elf.iplt; |
4263 | gotplt = htab->elf.igotplt; | |
4264 | relplt = htab->elf.irelplt; | |
cbe950e9 | 4265 | } |
70256ad8 AJ |
4266 | |
4267 | /* This symbol has an entry in the procedure linkage table. Set | |
407443a3 | 4268 | it up. */ |
cbe950e9 L |
4269 | if ((h->dynindx == -1 |
4270 | && !((h->forced_local || info->executable) | |
4271 | && h->def_regular | |
4272 | && h->type == STT_GNU_IFUNC)) | |
4273 | || plt == NULL | |
4274 | || gotplt == NULL | |
4275 | || relplt == NULL) | |
f6df62c8 | 4276 | return FALSE; |
70256ad8 AJ |
4277 | |
4278 | /* Get the index in the procedure linkage table which | |
4279 | corresponds to this symbol. This is the index of this symbol | |
4280 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 4281 | first entry in the procedure linkage table is reserved. |
6bbec505 | 4282 | |
cbe950e9 | 4283 | Get the offset into the .got table of the entry that |
407443a3 | 4284 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE |
cbe950e9 L |
4285 | bytes. The first three are reserved for the dynamic linker. |
4286 | ||
4287 | For static executables, we don't reserve anything. */ | |
4288 | ||
6de2ae4a | 4289 | if (plt == htab->elf.splt) |
cbe950e9 | 4290 | { |
eed180f8 | 4291 | got_offset = h->plt.offset / abed->plt_entry_size - 1; |
e1f98742 | 4292 | got_offset = (got_offset + 3) * GOT_ENTRY_SIZE; |
cbe950e9 L |
4293 | } |
4294 | else | |
4295 | { | |
eed180f8 | 4296 | got_offset = h->plt.offset / abed->plt_entry_size; |
e1f98742 | 4297 | got_offset = got_offset * GOT_ENTRY_SIZE; |
cbe950e9 | 4298 | } |
70256ad8 AJ |
4299 | |
4300 | /* Fill in the entry in the procedure linkage table. */ | |
eed180f8 RM |
4301 | memcpy (plt->contents + h->plt.offset, abed->plt_entry, |
4302 | abed->plt_entry_size); | |
4303 | ||
4304 | /* Insert the relocation positions of the plt section. */ | |
4305 | ||
4306 | /* Put offset the PC-relative instruction referring to the GOT entry, | |
4307 | subtracting the size of that instruction. */ | |
653165cc | 4308 | bfd_put_32 (output_bfd, |
eed180f8 RM |
4309 | (gotplt->output_section->vma |
4310 | + gotplt->output_offset | |
4311 | + got_offset | |
4312 | - plt->output_section->vma | |
4313 | - plt->output_offset | |
4314 | - h->plt.offset | |
4315 | - abed->plt_got_insn_size), | |
4316 | plt->contents + h->plt.offset + abed->plt_got_offset); | |
cbe950e9 | 4317 | |
653165cc | 4318 | /* Fill in the entry in the global offset table, initially this |
eed180f8 | 4319 | points to the second part of the PLT entry. */ |
cbe950e9 L |
4320 | bfd_put_64 (output_bfd, (plt->output_section->vma |
4321 | + plt->output_offset | |
eed180f8 | 4322 | + h->plt.offset + abed->plt_lazy_offset), |
cbe950e9 | 4323 | gotplt->contents + got_offset); |
70256ad8 AJ |
4324 | |
4325 | /* Fill in the entry in the .rela.plt section. */ | |
cbe950e9 L |
4326 | rela.r_offset = (gotplt->output_section->vma |
4327 | + gotplt->output_offset | |
70256ad8 | 4328 | + got_offset); |
cbe950e9 L |
4329 | if (h->dynindx == -1 |
4330 | || ((info->executable | |
4331 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
4332 | && h->def_regular | |
4333 | && h->type == STT_GNU_IFUNC)) | |
4334 | { | |
4335 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
4336 | R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */ | |
351f65ca | 4337 | rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE); |
cbe950e9 L |
4338 | rela.r_addend = (h->root.u.def.value |
4339 | + h->root.u.def.section->output_section->vma | |
4340 | + h->root.u.def.section->output_offset); | |
e1f98742 L |
4341 | /* R_X86_64_IRELATIVE comes last. */ |
4342 | plt_index = htab->next_irelative_index--; | |
cbe950e9 L |
4343 | } |
4344 | else | |
4345 | { | |
351f65ca | 4346 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT); |
cbe950e9 | 4347 | rela.r_addend = 0; |
e1f98742 L |
4348 | plt_index = htab->next_jump_slot_index++; |
4349 | } | |
4350 | ||
4351 | /* Don't fill PLT entry for static executables. */ | |
4352 | if (plt == htab->elf.splt) | |
4353 | { | |
4354 | /* Put relocation index. */ | |
4355 | bfd_put_32 (output_bfd, plt_index, | |
eed180f8 | 4356 | plt->contents + h->plt.offset + abed->plt_reloc_offset); |
e1f98742 | 4357 | /* Put offset for jmp .PLT0. */ |
eed180f8 RM |
4358 | bfd_put_32 (output_bfd, - (h->plt.offset + abed->plt_plt_insn_end), |
4359 | plt->contents + h->plt.offset + abed->plt_plt_offset); | |
cbe950e9 | 4360 | } |
351f65ca L |
4361 | |
4362 | bed = get_elf_backend_data (output_bfd); | |
4363 | loc = relplt->contents + plt_index * bed->s->sizeof_rela; | |
82e96e07 | 4364 | bed->s->swap_reloca_out (output_bfd, &rela, loc); |
70256ad8 | 4365 | |
f5385ebf | 4366 | if (!h->def_regular) |
70256ad8 AJ |
4367 | { |
4368 | /* Mark the symbol as undefined, rather than as defined in | |
47a9f7b3 JJ |
4369 | the .plt section. Leave the value if there were any |
4370 | relocations where pointer equality matters (this is a clue | |
c434dee6 AJ |
4371 | for the dynamic linker, to make function pointer |
4372 | comparisons work between an application and shared | |
47a9f7b3 JJ |
4373 | library), otherwise set it to zero. If a function is only |
4374 | called from a binary, there is no need to slow down | |
4375 | shared libraries because of that. */ | |
70256ad8 | 4376 | sym->st_shndx = SHN_UNDEF; |
f5385ebf | 4377 | if (!h->pointer_equality_needed) |
47a9f7b3 | 4378 | sym->st_value = 0; |
70256ad8 AJ |
4379 | } |
4380 | } | |
4381 | ||
bffbf940 | 4382 | if (h->got.offset != (bfd_vma) -1 |
351f65ca L |
4383 | && ! GOT_TLS_GD_ANY_P (elf_x86_64_hash_entry (h)->tls_type) |
4384 | && elf_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE) | |
053579d7 | 4385 | { |
053579d7 AJ |
4386 | Elf_Internal_Rela rela; |
4387 | ||
4388 | /* This symbol has an entry in the global offset table. Set it | |
bffbf940 | 4389 | up. */ |
6de2ae4a | 4390 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
c434dee6 | 4391 | abort (); |
053579d7 | 4392 | |
6de2ae4a L |
4393 | rela.r_offset = (htab->elf.sgot->output_section->vma |
4394 | + htab->elf.sgot->output_offset | |
dc810e39 | 4395 | + (h->got.offset &~ (bfd_vma) 1)); |
053579d7 AJ |
4396 | |
4397 | /* If this is a static link, or it is a -Bsymbolic link and the | |
4398 | symbol is defined locally or was forced to be local because | |
4399 | of a version file, we just want to emit a RELATIVE reloc. | |
4400 | The entry in the global offset table will already have been | |
4401 | initialized in the relocate_section function. */ | |
710ab287 | 4402 | if (h->def_regular |
0018b0a3 L |
4403 | && h->type == STT_GNU_IFUNC) |
4404 | { | |
710ab287 L |
4405 | if (info->shared) |
4406 | { | |
4407 | /* Generate R_X86_64_GLOB_DAT. */ | |
4408 | goto do_glob_dat; | |
4409 | } | |
4410 | else | |
4411 | { | |
90d60710 L |
4412 | asection *plt; |
4413 | ||
710ab287 L |
4414 | if (!h->pointer_equality_needed) |
4415 | abort (); | |
4416 | ||
4417 | /* For non-shared object, we can't use .got.plt, which | |
4418 | contains the real function addres if we need pointer | |
4419 | equality. We load the GOT entry with the PLT entry. */ | |
90d60710 | 4420 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
710ab287 L |
4421 | bfd_put_64 (output_bfd, (plt->output_section->vma |
4422 | + plt->output_offset | |
4423 | + h->plt.offset), | |
6de2ae4a | 4424 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
4425 | return TRUE; |
4426 | } | |
0018b0a3 L |
4427 | } |
4428 | else if (info->shared | |
4429 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
053579d7 | 4430 | { |
41bed6dd L |
4431 | if (!h->def_regular) |
4432 | return FALSE; | |
cc78d0af | 4433 | BFD_ASSERT((h->got.offset & 1) != 0); |
351f65ca | 4434 | rela.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
053579d7 AJ |
4435 | rela.r_addend = (h->root.u.def.value |
4436 | + h->root.u.def.section->output_section->vma | |
4437 | + h->root.u.def.section->output_offset); | |
4438 | } | |
4439 | else | |
4440 | { | |
4441 | BFD_ASSERT((h->got.offset & 1) == 0); | |
710ab287 | 4442 | do_glob_dat: |
c434dee6 | 4443 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 4444 | htab->elf.sgot->contents + h->got.offset); |
351f65ca | 4445 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT); |
053579d7 AJ |
4446 | rela.r_addend = 0; |
4447 | } | |
4448 | ||
351f65ca | 4449 | elf_append_rela (output_bfd, htab->elf.srelgot, &rela); |
053579d7 AJ |
4450 | } |
4451 | ||
f5385ebf | 4452 | if (h->needs_copy) |
70256ad8 | 4453 | { |
70256ad8 AJ |
4454 | Elf_Internal_Rela rela; |
4455 | ||
4456 | /* This symbol needs a copy reloc. Set it up. */ | |
4457 | ||
c434dee6 AJ |
4458 | if (h->dynindx == -1 |
4459 | || (h->root.type != bfd_link_hash_defined | |
4460 | && h->root.type != bfd_link_hash_defweak) | |
4461 | || htab->srelbss == NULL) | |
4462 | abort (); | |
70256ad8 AJ |
4463 | |
4464 | rela.r_offset = (h->root.u.def.value | |
4465 | + h->root.u.def.section->output_section->vma | |
4466 | + h->root.u.def.section->output_offset); | |
351f65ca | 4467 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY); |
70256ad8 | 4468 | rela.r_addend = 0; |
351f65ca | 4469 | elf_append_rela (output_bfd, htab->srelbss, &rela); |
70256ad8 AJ |
4470 | } |
4471 | ||
c25bc9fc L |
4472 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may |
4473 | be NULL for local symbols. */ | |
4474 | if (sym != NULL | |
4475 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4476 | || h == htab->elf.hgot)) | |
70256ad8 AJ |
4477 | sym->st_shndx = SHN_ABS; |
4478 | ||
b34976b6 | 4479 | return TRUE; |
70256ad8 AJ |
4480 | } |
4481 | ||
c25bc9fc L |
4482 | /* Finish up local dynamic symbol handling. We set the contents of |
4483 | various dynamic sections here. */ | |
4484 | ||
4485 | static bfd_boolean | |
351f65ca | 4486 | elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf) |
c25bc9fc L |
4487 | { |
4488 | struct elf_link_hash_entry *h | |
4489 | = (struct elf_link_hash_entry *) *slot; | |
4490 | struct bfd_link_info *info | |
eed180f8 | 4491 | = (struct bfd_link_info *) inf; |
c25bc9fc | 4492 | |
351f65ca | 4493 | return elf_x86_64_finish_dynamic_symbol (info->output_bfd, |
c25bc9fc L |
4494 | info, h, NULL); |
4495 | } | |
4496 | ||
c434dee6 AJ |
4497 | /* Used to decide how to sort relocs in an optimal manner for the |
4498 | dynamic linker, before writing them out. */ | |
4499 | ||
4500 | static enum elf_reloc_type_class | |
351f65ca | 4501 | elf_x86_64_reloc_type_class (const Elf_Internal_Rela *rela) |
c434dee6 | 4502 | { |
351f65ca | 4503 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
c434dee6 AJ |
4504 | { |
4505 | case R_X86_64_RELATIVE: | |
4506 | return reloc_class_relative; | |
4507 | case R_X86_64_JUMP_SLOT: | |
4508 | return reloc_class_plt; | |
4509 | case R_X86_64_COPY: | |
4510 | return reloc_class_copy; | |
4511 | default: | |
4512 | return reloc_class_normal; | |
4513 | } | |
4514 | } | |
4515 | ||
70256ad8 AJ |
4516 | /* Finish up the dynamic sections. */ |
4517 | ||
b34976b6 | 4518 | static bfd_boolean |
351f65ca L |
4519 | elf_x86_64_finish_dynamic_sections (bfd *output_bfd, |
4520 | struct bfd_link_info *info) | |
70256ad8 | 4521 | { |
351f65ca | 4522 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
4523 | bfd *dynobj; |
4524 | asection *sdyn; | |
eed180f8 RM |
4525 | const struct elf_x86_64_backend_data *const abed |
4526 | = get_elf_x86_64_backend_data (output_bfd); | |
70256ad8 | 4527 | |
351f65ca | 4528 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
4529 | if (htab == NULL) |
4530 | return FALSE; | |
4531 | ||
c434dee6 | 4532 | dynobj = htab->elf.dynobj; |
70256ad8 AJ |
4533 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
4534 | ||
c434dee6 | 4535 | if (htab->elf.dynamic_sections_created) |
70256ad8 | 4536 | { |
82e96e07 L |
4537 | bfd_byte *dyncon, *dynconend; |
4538 | const struct elf_backend_data *bed; | |
4539 | bfd_size_type sizeof_dyn; | |
70256ad8 | 4540 | |
6de2ae4a | 4541 | if (sdyn == NULL || htab->elf.sgot == NULL) |
c434dee6 | 4542 | abort (); |
70256ad8 | 4543 | |
82e96e07 L |
4544 | bed = get_elf_backend_data (dynobj); |
4545 | sizeof_dyn = bed->s->sizeof_dyn; | |
4546 | dyncon = sdyn->contents; | |
4547 | dynconend = sdyn->contents + sdyn->size; | |
4548 | for (; dyncon < dynconend; dyncon += sizeof_dyn) | |
70256ad8 AJ |
4549 | { |
4550 | Elf_Internal_Dyn dyn; | |
70256ad8 AJ |
4551 | asection *s; |
4552 | ||
82e96e07 | 4553 | (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn); |
70256ad8 AJ |
4554 | |
4555 | switch (dyn.d_tag) | |
4556 | { | |
4557 | default: | |
053579d7 | 4558 | continue; |
70256ad8 AJ |
4559 | |
4560 | case DT_PLTGOT: | |
6de2ae4a | 4561 | s = htab->elf.sgotplt; |
8c37241b | 4562 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
c434dee6 | 4563 | break; |
70256ad8 AJ |
4564 | |
4565 | case DT_JMPREL: | |
6de2ae4a | 4566 | dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma; |
c434dee6 | 4567 | break; |
70256ad8 | 4568 | |
c434dee6 | 4569 | case DT_PLTRELSZ: |
6de2ae4a | 4570 | s = htab->elf.srelplt->output_section; |
eea6121a | 4571 | dyn.d_un.d_val = s->size; |
70256ad8 AJ |
4572 | break; |
4573 | ||
4574 | case DT_RELASZ: | |
c434dee6 AJ |
4575 | /* The procedure linkage table relocs (DT_JMPREL) should |
4576 | not be included in the overall relocs (DT_RELA). | |
4577 | Therefore, we override the DT_RELASZ entry here to | |
4578 | make it not include the JMPREL relocs. Since the | |
4579 | linker script arranges for .rela.plt to follow all | |
4580 | other relocation sections, we don't have to worry | |
4581 | about changing the DT_RELA entry. */ | |
6de2ae4a | 4582 | if (htab->elf.srelplt != NULL) |
70256ad8 | 4583 | { |
6de2ae4a | 4584 | s = htab->elf.srelplt->output_section; |
eea6121a | 4585 | dyn.d_un.d_val -= s->size; |
70256ad8 AJ |
4586 | } |
4587 | break; | |
67a4f2b7 AO |
4588 | |
4589 | case DT_TLSDESC_PLT: | |
6de2ae4a | 4590 | s = htab->elf.splt; |
67a4f2b7 AO |
4591 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
4592 | + htab->tlsdesc_plt; | |
4593 | break; | |
4594 | ||
4595 | case DT_TLSDESC_GOT: | |
6de2ae4a | 4596 | s = htab->elf.sgot; |
67a4f2b7 AO |
4597 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
4598 | + htab->tlsdesc_got; | |
4599 | break; | |
70256ad8 | 4600 | } |
c434dee6 | 4601 | |
82e96e07 | 4602 | (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon); |
70256ad8 AJ |
4603 | } |
4604 | ||
c434dee6 | 4605 | /* Fill in the special first entry in the procedure linkage table. */ |
6de2ae4a | 4606 | if (htab->elf.splt && htab->elf.splt->size > 0) |
70256ad8 | 4607 | { |
653165cc | 4608 | /* Fill in the first entry in the procedure linkage table. */ |
eed180f8 RM |
4609 | memcpy (htab->elf.splt->contents, |
4610 | abed->plt0_entry, abed->plt_entry_size); | |
653165cc AJ |
4611 | /* Add offset for pushq GOT+8(%rip), since the instruction |
4612 | uses 6 bytes subtract this value. */ | |
4613 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4614 | (htab->elf.sgotplt->output_section->vma |
4615 | + htab->elf.sgotplt->output_offset | |
653165cc | 4616 | + 8 |
6de2ae4a L |
4617 | - htab->elf.splt->output_section->vma |
4618 | - htab->elf.splt->output_offset | |
653165cc | 4619 | - 6), |
eed180f8 RM |
4620 | htab->elf.splt->contents + abed->plt0_got1_offset); |
4621 | /* Add offset for the PC-relative instruction accessing GOT+16, | |
4622 | subtracting the offset to the end of that instruction. */ | |
653165cc | 4623 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4624 | (htab->elf.sgotplt->output_section->vma |
4625 | + htab->elf.sgotplt->output_offset | |
653165cc | 4626 | + 16 |
6de2ae4a L |
4627 | - htab->elf.splt->output_section->vma |
4628 | - htab->elf.splt->output_offset | |
eed180f8 RM |
4629 | - abed->plt0_got2_insn_end), |
4630 | htab->elf.splt->contents + abed->plt0_got2_offset); | |
653165cc | 4631 | |
eed180f8 RM |
4632 | elf_section_data (htab->elf.splt->output_section) |
4633 | ->this_hdr.sh_entsize = abed->plt_entry_size; | |
67a4f2b7 AO |
4634 | |
4635 | if (htab->tlsdesc_plt) | |
4636 | { | |
4637 | bfd_put_64 (output_bfd, (bfd_vma) 0, | |
6de2ae4a | 4638 | htab->elf.sgot->contents + htab->tlsdesc_got); |
67a4f2b7 | 4639 | |
6de2ae4a | 4640 | memcpy (htab->elf.splt->contents + htab->tlsdesc_plt, |
eed180f8 | 4641 | abed->plt0_entry, abed->plt_entry_size); |
67a4f2b7 AO |
4642 | |
4643 | /* Add offset for pushq GOT+8(%rip), since the | |
4644 | instruction uses 6 bytes subtract this value. */ | |
4645 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4646 | (htab->elf.sgotplt->output_section->vma |
4647 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 | 4648 | + 8 |
6de2ae4a L |
4649 | - htab->elf.splt->output_section->vma |
4650 | - htab->elf.splt->output_offset | |
67a4f2b7 AO |
4651 | - htab->tlsdesc_plt |
4652 | - 6), | |
eed180f8 RM |
4653 | htab->elf.splt->contents |
4654 | + htab->tlsdesc_plt + abed->plt0_got1_offset); | |
4655 | /* Add offset for the PC-relative instruction accessing GOT+TDG, | |
4656 | where TGD stands for htab->tlsdesc_got, subtracting the offset | |
4657 | to the end of that instruction. */ | |
67a4f2b7 | 4658 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4659 | (htab->elf.sgot->output_section->vma |
4660 | + htab->elf.sgot->output_offset | |
67a4f2b7 | 4661 | + htab->tlsdesc_got |
6de2ae4a L |
4662 | - htab->elf.splt->output_section->vma |
4663 | - htab->elf.splt->output_offset | |
67a4f2b7 | 4664 | - htab->tlsdesc_plt |
eed180f8 RM |
4665 | - abed->plt0_got2_insn_end), |
4666 | htab->elf.splt->contents | |
4667 | + htab->tlsdesc_plt + abed->plt0_got2_offset); | |
67a4f2b7 | 4668 | } |
70256ad8 | 4669 | } |
70256ad8 AJ |
4670 | } |
4671 | ||
6de2ae4a | 4672 | if (htab->elf.sgotplt) |
70256ad8 | 4673 | { |
56d4289c L |
4674 | if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) |
4675 | { | |
4676 | (*_bfd_error_handler) | |
4677 | (_("discarded output section: `%A'"), htab->elf.sgotplt); | |
4678 | return FALSE; | |
4679 | } | |
4680 | ||
c434dee6 | 4681 | /* Fill in the first three entries in the global offset table. */ |
6de2ae4a | 4682 | if (htab->elf.sgotplt->size > 0) |
c434dee6 AJ |
4683 | { |
4684 | /* Set the first entry in the global offset table to the address of | |
4685 | the dynamic section. */ | |
4686 | if (sdyn == NULL) | |
6de2ae4a | 4687 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents); |
c434dee6 AJ |
4688 | else |
4689 | bfd_put_64 (output_bfd, | |
4690 | sdyn->output_section->vma + sdyn->output_offset, | |
6de2ae4a | 4691 | htab->elf.sgotplt->contents); |
c434dee6 | 4692 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
6de2ae4a L |
4693 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE); |
4694 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2); | |
c434dee6 | 4695 | } |
70256ad8 | 4696 | |
6de2ae4a | 4697 | elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = |
c434dee6 AJ |
4698 | GOT_ENTRY_SIZE; |
4699 | } | |
70256ad8 | 4700 | |
e41b3a13 JJ |
4701 | /* Adjust .eh_frame for .plt section. */ |
4702 | if (htab->plt_eh_frame != NULL) | |
4703 | { | |
4704 | if (htab->elf.splt != NULL | |
4705 | && htab->elf.splt->size != 0 | |
4706 | && (htab->elf.splt->flags & SEC_EXCLUDE) == 0 | |
4707 | && htab->elf.splt->output_section != NULL | |
4708 | && htab->plt_eh_frame->output_section != NULL) | |
4709 | { | |
4710 | bfd_vma plt_start = htab->elf.splt->output_section->vma; | |
4711 | bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma | |
4712 | + htab->plt_eh_frame->output_offset | |
4713 | + PLT_FDE_START_OFFSET; | |
4714 | bfd_put_signed_32 (dynobj, plt_start - eh_frame_start, | |
4715 | htab->plt_eh_frame->contents | |
4716 | + PLT_FDE_START_OFFSET); | |
4717 | } | |
4718 | if (htab->plt_eh_frame->sec_info_type | |
4719 | == ELF_INFO_TYPE_EH_FRAME) | |
4720 | { | |
4721 | if (! _bfd_elf_write_section_eh_frame (output_bfd, info, | |
4722 | htab->plt_eh_frame, | |
4723 | htab->plt_eh_frame->contents)) | |
4724 | return FALSE; | |
4725 | } | |
4726 | } | |
4727 | ||
6de2ae4a L |
4728 | if (htab->elf.sgot && htab->elf.sgot->size > 0) |
4729 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize | |
8c37241b JJ |
4730 | = GOT_ENTRY_SIZE; |
4731 | ||
c25bc9fc L |
4732 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
4733 | htab_traverse (htab->loc_hash_table, | |
351f65ca | 4734 | elf_x86_64_finish_local_dynamic_symbol, |
c25bc9fc L |
4735 | info); |
4736 | ||
b34976b6 | 4737 | return TRUE; |
8d88c4ca NC |
4738 | } |
4739 | ||
4c45e5c9 JJ |
4740 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4741 | or (bfd_vma) -1 if it should not be included. */ | |
4742 | ||
4743 | static bfd_vma | |
351f65ca L |
4744 | elf_x86_64_plt_sym_val (bfd_vma i, const asection *plt, |
4745 | const arelent *rel ATTRIBUTE_UNUSED) | |
4c45e5c9 | 4746 | { |
eed180f8 | 4747 | return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner); |
4c45e5c9 | 4748 | } |
8df9fc9d | 4749 | |
d2b2c203 DJ |
4750 | /* Handle an x86-64 specific section when reading an object file. This |
4751 | is called when elfcode.h finds a section with an unknown type. */ | |
4752 | ||
4753 | static bfd_boolean | |
351f65ca | 4754 | elf_x86_64_section_from_shdr (bfd *abfd, |
6dc132d9 L |
4755 | Elf_Internal_Shdr *hdr, |
4756 | const char *name, | |
4757 | int shindex) | |
d2b2c203 DJ |
4758 | { |
4759 | if (hdr->sh_type != SHT_X86_64_UNWIND) | |
4760 | return FALSE; | |
4761 | ||
6dc132d9 | 4762 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
d2b2c203 DJ |
4763 | return FALSE; |
4764 | ||
4765 | return TRUE; | |
4766 | } | |
4767 | ||
3b22753a L |
4768 | /* Hook called by the linker routine which adds symbols from an object |
4769 | file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead | |
4770 | of .bss. */ | |
4771 | ||
4772 | static bfd_boolean | |
351f65ca L |
4773 | elf_x86_64_add_symbol_hook (bfd *abfd, |
4774 | struct bfd_link_info *info, | |
4775 | Elf_Internal_Sym *sym, | |
4776 | const char **namep ATTRIBUTE_UNUSED, | |
4777 | flagword *flagsp ATTRIBUTE_UNUSED, | |
4778 | asection **secp, | |
4779 | bfd_vma *valp) | |
3b22753a L |
4780 | { |
4781 | asection *lcomm; | |
4782 | ||
4783 | switch (sym->st_shndx) | |
4784 | { | |
4785 | case SHN_X86_64_LCOMMON: | |
4786 | lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON"); | |
4787 | if (lcomm == NULL) | |
4788 | { | |
4789 | lcomm = bfd_make_section_with_flags (abfd, | |
4790 | "LARGE_COMMON", | |
4791 | (SEC_ALLOC | |
4792 | | SEC_IS_COMMON | |
4793 | | SEC_LINKER_CREATED)); | |
4794 | if (lcomm == NULL) | |
4795 | return FALSE; | |
4796 | elf_section_flags (lcomm) |= SHF_X86_64_LARGE; | |
4797 | } | |
4798 | *secp = lcomm; | |
4799 | *valp = sym->st_size; | |
c35bdf6e | 4800 | return TRUE; |
3b22753a | 4801 | } |
d8045f23 | 4802 | |
c16153ae | 4803 | if ((abfd->flags & DYNAMIC) == 0 |
f64b2e8d NC |
4804 | && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
4805 | || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)) | |
4806 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
d8045f23 | 4807 | |
3b22753a L |
4808 | return TRUE; |
4809 | } | |
4810 | ||
4811 | ||
4812 | /* Given a BFD section, try to locate the corresponding ELF section | |
4813 | index. */ | |
4814 | ||
4815 | static bfd_boolean | |
351f65ca L |
4816 | elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
4817 | asection *sec, int *index_return) | |
3b22753a L |
4818 | { |
4819 | if (sec == &_bfd_elf_large_com_section) | |
4820 | { | |
91d6fa6a | 4821 | *index_return = SHN_X86_64_LCOMMON; |
3b22753a L |
4822 | return TRUE; |
4823 | } | |
4824 | return FALSE; | |
4825 | } | |
4826 | ||
4827 | /* Process a symbol. */ | |
4828 | ||
4829 | static void | |
351f65ca L |
4830 | elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, |
4831 | asymbol *asym) | |
3b22753a L |
4832 | { |
4833 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
4834 | ||
4835 | switch (elfsym->internal_elf_sym.st_shndx) | |
4836 | { | |
4837 | case SHN_X86_64_LCOMMON: | |
4838 | asym->section = &_bfd_elf_large_com_section; | |
4839 | asym->value = elfsym->internal_elf_sym.st_size; | |
4840 | /* Common symbol doesn't set BSF_GLOBAL. */ | |
4841 | asym->flags &= ~BSF_GLOBAL; | |
4842 | break; | |
4843 | } | |
4844 | } | |
4845 | ||
4846 | static bfd_boolean | |
351f65ca | 4847 | elf_x86_64_common_definition (Elf_Internal_Sym *sym) |
3b22753a L |
4848 | { |
4849 | return (sym->st_shndx == SHN_COMMON | |
4850 | || sym->st_shndx == SHN_X86_64_LCOMMON); | |
4851 | } | |
4852 | ||
4853 | static unsigned int | |
351f65ca | 4854 | elf_x86_64_common_section_index (asection *sec) |
3b22753a L |
4855 | { |
4856 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
4857 | return SHN_COMMON; | |
4858 | else | |
4859 | return SHN_X86_64_LCOMMON; | |
4860 | } | |
4861 | ||
4862 | static asection * | |
351f65ca | 4863 | elf_x86_64_common_section (asection *sec) |
3b22753a L |
4864 | { |
4865 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
4866 | return bfd_com_section_ptr; | |
4867 | else | |
4868 | return &_bfd_elf_large_com_section; | |
4869 | } | |
4870 | ||
4871 | static bfd_boolean | |
351f65ca L |
4872 | elf_x86_64_merge_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4873 | struct elf_link_hash_entry **sym_hash ATTRIBUTE_UNUSED, | |
4874 | struct elf_link_hash_entry *h, | |
4875 | Elf_Internal_Sym *sym, | |
4876 | asection **psec, | |
4877 | bfd_vma *pvalue ATTRIBUTE_UNUSED, | |
4878 | unsigned int *pold_alignment ATTRIBUTE_UNUSED, | |
4879 | bfd_boolean *skip ATTRIBUTE_UNUSED, | |
4880 | bfd_boolean *override ATTRIBUTE_UNUSED, | |
4881 | bfd_boolean *type_change_ok ATTRIBUTE_UNUSED, | |
4882 | bfd_boolean *size_change_ok ATTRIBUTE_UNUSED, | |
71e7aa7d L |
4883 | bfd_boolean *newdyn ATTRIBUTE_UNUSED, |
4884 | bfd_boolean *newdef, | |
351f65ca L |
4885 | bfd_boolean *newdyncommon ATTRIBUTE_UNUSED, |
4886 | bfd_boolean *newweak ATTRIBUTE_UNUSED, | |
4887 | bfd *abfd ATTRIBUTE_UNUSED, | |
4888 | asection **sec, | |
71e7aa7d L |
4889 | bfd_boolean *olddyn ATTRIBUTE_UNUSED, |
4890 | bfd_boolean *olddef, | |
351f65ca L |
4891 | bfd_boolean *olddyncommon ATTRIBUTE_UNUSED, |
4892 | bfd_boolean *oldweak ATTRIBUTE_UNUSED, | |
4893 | bfd *oldbfd, | |
4894 | asection **oldsec) | |
3b22753a L |
4895 | { |
4896 | /* A normal common symbol and a large common symbol result in a | |
00492999 L |
4897 | normal common symbol. We turn the large common symbol into a |
4898 | normal one. */ | |
71e7aa7d | 4899 | if (!*olddef |
3b22753a | 4900 | && h->root.type == bfd_link_hash_common |
71e7aa7d | 4901 | && !*newdef |
3b22753a | 4902 | && bfd_is_com_section (*sec) |
00492999 | 4903 | && *oldsec != *sec) |
3b22753a | 4904 | { |
00492999 L |
4905 | if (sym->st_shndx == SHN_COMMON |
4906 | && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) != 0) | |
4907 | { | |
4908 | h->root.u.c.p->section | |
4909 | = bfd_make_section_old_way (oldbfd, "COMMON"); | |
4910 | h->root.u.c.p->section->flags = SEC_ALLOC; | |
4911 | } | |
4912 | else if (sym->st_shndx == SHN_X86_64_LCOMMON | |
4913 | && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) == 0) | |
9a2e389a | 4914 | *psec = *sec = bfd_com_section_ptr; |
3b22753a L |
4915 | } |
4916 | ||
4917 | return TRUE; | |
4918 | } | |
4919 | ||
4920 | static int | |
351f65ca L |
4921 | elf_x86_64_additional_program_headers (bfd *abfd, |
4922 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
3b22753a L |
4923 | { |
4924 | asection *s; | |
9a2e389a | 4925 | int count = 0; |
3b22753a L |
4926 | |
4927 | /* Check to see if we need a large readonly segment. */ | |
4928 | s = bfd_get_section_by_name (abfd, ".lrodata"); | |
4929 | if (s && (s->flags & SEC_LOAD)) | |
4930 | count++; | |
4931 | ||
4932 | /* Check to see if we need a large data segment. Since .lbss sections | |
4933 | is placed right after the .bss section, there should be no need for | |
4934 | a large data segment just because of .lbss. */ | |
4935 | s = bfd_get_section_by_name (abfd, ".ldata"); | |
4936 | if (s && (s->flags & SEC_LOAD)) | |
4937 | count++; | |
4938 | ||
4939 | return count; | |
4940 | } | |
4941 | ||
fdc90cb4 JJ |
4942 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
4943 | ||
4944 | static bfd_boolean | |
351f65ca | 4945 | elf_x86_64_hash_symbol (struct elf_link_hash_entry *h) |
fdc90cb4 JJ |
4946 | { |
4947 | if (h->plt.offset != (bfd_vma) -1 | |
4948 | && !h->def_regular | |
4949 | && !h->pointer_equality_needed) | |
4950 | return FALSE; | |
4951 | ||
4952 | return _bfd_elf_hash_symbol (h); | |
4953 | } | |
4954 | ||
c543bf9a L |
4955 | /* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */ |
4956 | ||
4957 | static bfd_boolean | |
4958 | elf_x86_64_relocs_compatible (const bfd_target *input, | |
4959 | const bfd_target *output) | |
4960 | { | |
4961 | return ((xvec_get_elf_backend_data (input)->s->elfclass | |
4962 | == xvec_get_elf_backend_data (output)->s->elfclass) | |
4963 | && _bfd_elf_relocs_compatible (input, output)); | |
4964 | } | |
4965 | ||
9a2e389a | 4966 | static const struct bfd_elf_special_section |
351f65ca | 4967 | elf_x86_64_special_sections[]= |
3b22753a | 4968 | { |
0112cd26 NC |
4969 | { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, |
4970 | { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
4971 | { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE}, | |
4972 | { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
4973 | { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
4974 | { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
4975 | { NULL, 0, 0, 0, 0 } | |
3b22753a L |
4976 | }; |
4977 | ||
70256ad8 AJ |
4978 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_vec |
4979 | #define TARGET_LITTLE_NAME "elf64-x86-64" | |
4980 | #define ELF_ARCH bfd_arch_i386 | |
ae95ffa6 | 4981 | #define ELF_TARGET_ID X86_64_ELF_DATA |
70256ad8 | 4982 | #define ELF_MACHINE_CODE EM_X86_64 |
f7661549 | 4983 | #define ELF_MAXPAGESIZE 0x200000 |
2043964e | 4984 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 4985 | #define ELF_COMMONPAGESIZE 0x1000 |
70256ad8 AJ |
4986 | |
4987 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4988 | #define elf_backend_can_refcount 1 |
70256ad8 AJ |
4989 | #define elf_backend_want_got_plt 1 |
4990 | #define elf_backend_plt_readonly 1 | |
4991 | #define elf_backend_want_plt_sym 0 | |
4992 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE*3) | |
b491616a | 4993 | #define elf_backend_rela_normal 1 |
e41b3a13 | 4994 | #define elf_backend_plt_alignment 4 |
70256ad8 | 4995 | |
351f65ca | 4996 | #define elf_info_to_howto elf_x86_64_info_to_howto |
70256ad8 | 4997 | |
70256ad8 | 4998 | #define bfd_elf64_bfd_link_hash_table_create \ |
351f65ca | 4999 | elf_x86_64_link_hash_table_create |
c25bc9fc | 5000 | #define bfd_elf64_bfd_link_hash_table_free \ |
351f65ca L |
5001 | elf_x86_64_link_hash_table_free |
5002 | #define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup | |
157090f7 | 5003 | #define bfd_elf64_bfd_reloc_name_lookup \ |
351f65ca | 5004 | elf_x86_64_reloc_name_lookup |
70256ad8 | 5005 | |
351f65ca | 5006 | #define elf_backend_adjust_dynamic_symbol elf_x86_64_adjust_dynamic_symbol |
c543bf9a | 5007 | #define elf_backend_relocs_compatible elf_x86_64_relocs_compatible |
351f65ca L |
5008 | #define elf_backend_check_relocs elf_x86_64_check_relocs |
5009 | #define elf_backend_copy_indirect_symbol elf_x86_64_copy_indirect_symbol | |
5010 | #define elf_backend_create_dynamic_sections elf_x86_64_create_dynamic_sections | |
5011 | #define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections | |
5012 | #define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol | |
5013 | #define elf_backend_gc_mark_hook elf_x86_64_gc_mark_hook | |
5014 | #define elf_backend_gc_sweep_hook elf_x86_64_gc_sweep_hook | |
5015 | #define elf_backend_grok_prstatus elf_x86_64_grok_prstatus | |
5016 | #define elf_backend_grok_psinfo elf_x86_64_grok_psinfo | |
8fd79e71 L |
5017 | #ifdef CORE_HEADER |
5018 | #define elf_backend_write_core_note elf_x86_64_write_core_note | |
5019 | #endif | |
351f65ca L |
5020 | #define elf_backend_reloc_type_class elf_x86_64_reloc_type_class |
5021 | #define elf_backend_relocate_section elf_x86_64_relocate_section | |
5022 | #define elf_backend_size_dynamic_sections elf_x86_64_size_dynamic_sections | |
5023 | #define elf_backend_always_size_sections elf_x86_64_always_size_sections | |
74541ad4 | 5024 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
351f65ca | 5025 | #define elf_backend_plt_sym_val elf_x86_64_plt_sym_val |
407443a3 | 5026 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
351f65ca | 5027 | #define bfd_elf64_mkobject elf_x86_64_mkobject |
8d88c4ca | 5028 | |
d2b2c203 | 5029 | #define elf_backend_section_from_shdr \ |
351f65ca | 5030 | elf_x86_64_section_from_shdr |
d2b2c203 | 5031 | |
3b22753a | 5032 | #define elf_backend_section_from_bfd_section \ |
351f65ca | 5033 | elf_x86_64_elf_section_from_bfd_section |
3b22753a | 5034 | #define elf_backend_add_symbol_hook \ |
351f65ca | 5035 | elf_x86_64_add_symbol_hook |
3b22753a | 5036 | #define elf_backend_symbol_processing \ |
351f65ca | 5037 | elf_x86_64_symbol_processing |
3b22753a | 5038 | #define elf_backend_common_section_index \ |
351f65ca | 5039 | elf_x86_64_common_section_index |
3b22753a | 5040 | #define elf_backend_common_section \ |
351f65ca | 5041 | elf_x86_64_common_section |
3b22753a | 5042 | #define elf_backend_common_definition \ |
351f65ca | 5043 | elf_x86_64_common_definition |
3b22753a | 5044 | #define elf_backend_merge_symbol \ |
351f65ca | 5045 | elf_x86_64_merge_symbol |
3b22753a | 5046 | #define elf_backend_special_sections \ |
351f65ca | 5047 | elf_x86_64_special_sections |
3b22753a | 5048 | #define elf_backend_additional_program_headers \ |
351f65ca | 5049 | elf_x86_64_additional_program_headers |
fdc90cb4 | 5050 | #define elf_backend_hash_symbol \ |
351f65ca | 5051 | elf_x86_64_hash_symbol |
3b22753a | 5052 | |
d8045f23 NC |
5053 | #define elf_backend_post_process_headers _bfd_elf_set_osabi |
5054 | ||
8d88c4ca | 5055 | #include "elf64-target.h" |
9d7cbccd NC |
5056 | |
5057 | /* FreeBSD support. */ | |
5058 | ||
5059 | #undef TARGET_LITTLE_SYM | |
5060 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_freebsd_vec | |
5061 | #undef TARGET_LITTLE_NAME | |
5062 | #define TARGET_LITTLE_NAME "elf64-x86-64-freebsd" | |
5063 | ||
d1036acb L |
5064 | #undef ELF_OSABI |
5065 | #define ELF_OSABI ELFOSABI_FREEBSD | |
9d7cbccd | 5066 | |
9d7cbccd NC |
5067 | #undef elf64_bed |
5068 | #define elf64_bed elf64_x86_64_fbsd_bed | |
5069 | ||
5070 | #include "elf64-target.h" | |
8a9036a4 | 5071 | |
a6cc6b3b RO |
5072 | /* Solaris 2 support. */ |
5073 | ||
5074 | #undef TARGET_LITTLE_SYM | |
5075 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_sol2_vec | |
5076 | #undef TARGET_LITTLE_NAME | |
5077 | #define TARGET_LITTLE_NAME "elf64-x86-64-sol2" | |
5078 | ||
5079 | /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE | |
5080 | objects won't be recognized. */ | |
5081 | #undef ELF_OSABI | |
5082 | ||
5083 | #undef elf64_bed | |
5084 | #define elf64_bed elf64_x86_64_sol2_bed | |
5085 | ||
7dc98aea RO |
5086 | /* The 64-bit static TLS arena size is rounded to the nearest 16-byte |
5087 | boundary. */ | |
5088 | #undef elf_backend_static_tls_alignment | |
5089 | #define elf_backend_static_tls_alignment 16 | |
5090 | ||
a6cc6b3b RO |
5091 | /* The Solaris 2 ABI requires a plt symbol on all platforms. |
5092 | ||
5093 | Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output | |
5094 | File, p.63. */ | |
5095 | #undef elf_backend_want_plt_sym | |
5096 | #define elf_backend_want_plt_sym 1 | |
5097 | ||
5098 | #include "elf64-target.h" | |
5099 | ||
8059fb19 RM |
5100 | /* Native Client support. */ |
5101 | ||
5102 | #undef TARGET_LITTLE_SYM | |
5103 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_nacl_vec | |
5104 | #undef TARGET_LITTLE_NAME | |
5105 | #define TARGET_LITTLE_NAME "elf64-x86-64-nacl" | |
5106 | #undef elf64_bed | |
5107 | #define elf64_bed elf64_x86_64_nacl_bed | |
5108 | ||
5109 | #undef ELF_MAXPAGESIZE | |
5110 | #undef ELF_MINPAGESIZE | |
5111 | #undef ELF_COMMONPAGESIZE | |
5112 | #define ELF_MAXPAGESIZE 0x10000 | |
5113 | #define ELF_MINPAGESIZE 0x10000 | |
5114 | #define ELF_COMMONPAGESIZE 0x10000 | |
5115 | ||
5116 | /* Restore defaults. */ | |
5117 | #undef ELF_OSABI | |
5118 | #undef elf_backend_static_tls_alignment | |
5119 | #undef elf_backend_want_plt_sym | |
5120 | #define elf_backend_want_plt_sym 0 | |
5121 | ||
5122 | /* NaCl uses substantially different PLT entries for the same effects. */ | |
5123 | ||
5124 | #undef elf_backend_plt_alignment | |
5125 | #define elf_backend_plt_alignment 5 | |
5126 | #define NACL_PLT_ENTRY_SIZE 64 | |
5127 | #define NACLMASK 0xe0 /* 32-byte alignment mask. */ | |
5128 | ||
5129 | static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] = | |
5130 | { | |
5131 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ | |
5132 | 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */ | |
5133 | 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */ | |
5134 | 0x4d, 0x01, 0xfb, /* add %r15, %r11 */ | |
5135 | 0x41, 0xff, 0xe3, /* jmpq *%r11 */ | |
5136 | ||
5137 | /* 41 bytes of nop to pad out to the standard size. */ | |
5138 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */ | |
5139 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ | |
5140 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */ | |
5141 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ | |
5142 | 0x66, 0x66, /* excess data32 prefixes */ | |
5143 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ | |
5144 | }; | |
5145 | ||
5146 | static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] = | |
5147 | { | |
5148 | 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */ | |
5149 | 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */ | |
5150 | 0x4d, 0x01, 0xfb, /* add %r15, %r11 */ | |
5151 | 0x41, 0xff, 0xe3, /* jmpq *%r11 */ | |
5152 | ||
5153 | /* 15-byte nop sequence to pad out to the next 32-byte boundary. */ | |
5154 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */ | |
5155 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ | |
5156 | ||
5157 | /* Lazy GOT entries point here (32-byte aligned). */ | |
5158 | 0x68, /* pushq immediate */ | |
5159 | 0, 0, 0, 0, /* replaced with index into relocation table. */ | |
5160 | 0xe9, /* jmp relative */ | |
5161 | 0, 0, 0, 0, /* replaced with offset to start of .plt0. */ | |
5162 | ||
5163 | /* 22 bytes of nop to pad out to the standard size. */ | |
5164 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */ | |
5165 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ | |
5166 | 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */ | |
5167 | }; | |
5168 | ||
5169 | /* .eh_frame covering the .plt section. */ | |
5170 | ||
5171 | static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] = | |
5172 | { | |
5173 | #if (PLT_CIE_LENGTH != 20 \ | |
5174 | || PLT_FDE_LENGTH != 36 \ | |
5175 | || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \ | |
5176 | || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12) | |
5177 | # error "Need elf_x86_64_backend_data parameters for eh_frame_plt offsets!" | |
5178 | #endif | |
5179 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
5180 | 0, 0, 0, 0, /* CIE ID */ | |
5181 | 1, /* CIE version */ | |
5182 | 'z', 'R', 0, /* Augmentation string */ | |
5183 | 1, /* Code alignment factor */ | |
5184 | 0x78, /* Data alignment factor */ | |
5185 | 16, /* Return address column */ | |
5186 | 1, /* Augmentation size */ | |
5187 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
5188 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
5189 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
5190 | DW_CFA_nop, DW_CFA_nop, | |
5191 | ||
5192 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
5193 | PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */ | |
5194 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
5195 | 0, 0, 0, 0, /* .plt size goes here */ | |
5196 | 0, /* Augmentation size */ | |
5197 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
5198 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
5199 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
5200 | DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */ | |
5201 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
5202 | 13, /* Block length */ | |
5203 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
5204 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
5205 | DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge, | |
5206 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
5207 | DW_CFA_nop, DW_CFA_nop | |
5208 | }; | |
5209 | ||
5210 | static const struct elf_x86_64_backend_data elf_x86_64_nacl_arch_bed = | |
5211 | { | |
5212 | elf_x86_64_nacl_plt0_entry, /* plt0_entry */ | |
5213 | elf_x86_64_nacl_plt_entry, /* plt_entry */ | |
5214 | NACL_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
5215 | 2, /* plt0_got1_offset */ | |
5216 | 9, /* plt0_got2_offset */ | |
5217 | 13, /* plt0_got2_insn_end */ | |
5218 | 3, /* plt_got_offset */ | |
5219 | 33, /* plt_reloc_offset */ | |
5220 | 38, /* plt_plt_offset */ | |
5221 | 7, /* plt_got_insn_size */ | |
5222 | 42, /* plt_plt_insn_end */ | |
5223 | 32, /* plt_lazy_offset */ | |
5224 | elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */ | |
5225 | sizeof (elf_x86_64_nacl_eh_frame_plt), /* eh_frame_plt_size */ | |
5226 | }; | |
5227 | ||
5228 | #undef elf_backend_arch_data | |
5229 | #define elf_backend_arch_data &elf_x86_64_nacl_arch_bed | |
5230 | ||
5a68afcf RM |
5231 | #undef elf_backend_modify_segment_map |
5232 | #define elf_backend_modify_segment_map nacl_modify_segment_map | |
5233 | #undef elf_backend_modify_program_headers | |
5234 | #define elf_backend_modify_program_headers nacl_modify_program_headers | |
5235 | ||
8059fb19 RM |
5236 | #include "elf64-target.h" |
5237 | ||
5238 | /* Native Client x32 support. */ | |
5239 | ||
5240 | #undef TARGET_LITTLE_SYM | |
5241 | #define TARGET_LITTLE_SYM bfd_elf32_x86_64_nacl_vec | |
5242 | #undef TARGET_LITTLE_NAME | |
5243 | #define TARGET_LITTLE_NAME "elf32-x86-64-nacl" | |
5244 | #undef elf32_bed | |
5245 | #define elf32_bed elf32_x86_64_nacl_bed | |
5246 | ||
5247 | #define bfd_elf32_bfd_link_hash_table_create \ | |
5248 | elf_x86_64_link_hash_table_create | |
5249 | #define bfd_elf32_bfd_link_hash_table_free \ | |
5250 | elf_x86_64_link_hash_table_free | |
5251 | #define bfd_elf32_bfd_reloc_type_lookup \ | |
5252 | elf_x86_64_reloc_type_lookup | |
5253 | #define bfd_elf32_bfd_reloc_name_lookup \ | |
5254 | elf_x86_64_reloc_name_lookup | |
5255 | #define bfd_elf32_mkobject \ | |
5256 | elf_x86_64_mkobject | |
5257 | ||
5258 | #undef elf_backend_object_p | |
5259 | #define elf_backend_object_p \ | |
5260 | elf32_x86_64_elf_object_p | |
5261 | ||
5262 | #undef elf_backend_bfd_from_remote_memory | |
5263 | #define elf_backend_bfd_from_remote_memory \ | |
5264 | _bfd_elf32_bfd_from_remote_memory | |
5265 | ||
5266 | #undef elf_backend_size_info | |
5267 | #define elf_backend_size_info \ | |
5268 | _bfd_elf32_size_info | |
5269 | ||
5270 | #include "elf32-target.h" | |
5271 | ||
5272 | /* Restore defaults. */ | |
5a68afcf | 5273 | #undef elf_backend_object_p |
8059fb19 | 5274 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
5a68afcf RM |
5275 | #undef elf_backend_bfd_from_remote_memory |
5276 | #undef elf_backend_size_info | |
5277 | #undef elf_backend_modify_segment_map | |
5278 | #undef elf_backend_modify_program_headers | |
8059fb19 | 5279 | |
8a9036a4 L |
5280 | /* Intel L1OM support. */ |
5281 | ||
5282 | static bfd_boolean | |
5283 | elf64_l1om_elf_object_p (bfd *abfd) | |
5284 | { | |
5285 | /* Set the right machine number for an L1OM elf64 file. */ | |
5286 | bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om); | |
5287 | return TRUE; | |
5288 | } | |
5289 | ||
5290 | #undef TARGET_LITTLE_SYM | |
5291 | #define TARGET_LITTLE_SYM bfd_elf64_l1om_vec | |
5292 | #undef TARGET_LITTLE_NAME | |
5293 | #define TARGET_LITTLE_NAME "elf64-l1om" | |
5294 | #undef ELF_ARCH | |
5295 | #define ELF_ARCH bfd_arch_l1om | |
5296 | ||
5297 | #undef ELF_MACHINE_CODE | |
5298 | #define ELF_MACHINE_CODE EM_L1OM | |
5299 | ||
5300 | #undef ELF_OSABI | |
5301 | ||
5302 | #undef elf64_bed | |
5303 | #define elf64_bed elf64_l1om_bed | |
5304 | ||
5305 | #undef elf_backend_object_p | |
5306 | #define elf_backend_object_p elf64_l1om_elf_object_p | |
5307 | ||
8059fb19 RM |
5308 | /* Restore defaults. */ |
5309 | #undef ELF_MAXPAGESIZE | |
5310 | #undef ELF_MINPAGESIZE | |
5311 | #undef ELF_COMMONPAGESIZE | |
5312 | #define ELF_MAXPAGESIZE 0x200000 | |
5313 | #define ELF_MINPAGESIZE 0x1000 | |
5314 | #define ELF_COMMONPAGESIZE 0x1000 | |
5315 | #undef elf_backend_plt_alignment | |
5316 | #define elf_backend_plt_alignment 4 | |
5317 | #undef elf_backend_arch_data | |
5318 | #define elf_backend_arch_data &elf_x86_64_arch_bed | |
1a0c107f | 5319 | |
8a9036a4 L |
5320 | #include "elf64-target.h" |
5321 | ||
5322 | /* FreeBSD L1OM support. */ | |
5323 | ||
5324 | #undef TARGET_LITTLE_SYM | |
5325 | #define TARGET_LITTLE_SYM bfd_elf64_l1om_freebsd_vec | |
5326 | #undef TARGET_LITTLE_NAME | |
5327 | #define TARGET_LITTLE_NAME "elf64-l1om-freebsd" | |
5328 | ||
5329 | #undef ELF_OSABI | |
5330 | #define ELF_OSABI ELFOSABI_FREEBSD | |
5331 | ||
5332 | #undef elf64_bed | |
5333 | #define elf64_bed elf64_l1om_fbsd_bed | |
5334 | ||
8a9036a4 | 5335 | #include "elf64-target.h" |
351f65ca | 5336 | |
7a9068fe L |
5337 | /* Intel K1OM support. */ |
5338 | ||
5339 | static bfd_boolean | |
5340 | elf64_k1om_elf_object_p (bfd *abfd) | |
5341 | { | |
5342 | /* Set the right machine number for an K1OM elf64 file. */ | |
5343 | bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om); | |
5344 | return TRUE; | |
5345 | } | |
5346 | ||
5347 | #undef TARGET_LITTLE_SYM | |
5348 | #define TARGET_LITTLE_SYM bfd_elf64_k1om_vec | |
5349 | #undef TARGET_LITTLE_NAME | |
5350 | #define TARGET_LITTLE_NAME "elf64-k1om" | |
5351 | #undef ELF_ARCH | |
5352 | #define ELF_ARCH bfd_arch_k1om | |
5353 | ||
5354 | #undef ELF_MACHINE_CODE | |
5355 | #define ELF_MACHINE_CODE EM_K1OM | |
5356 | ||
5357 | #undef ELF_OSABI | |
5358 | ||
5359 | #undef elf64_bed | |
5360 | #define elf64_bed elf64_k1om_bed | |
5361 | ||
5362 | #undef elf_backend_object_p | |
5363 | #define elf_backend_object_p elf64_k1om_elf_object_p | |
5364 | ||
5365 | #undef elf_backend_static_tls_alignment | |
5366 | ||
5367 | #undef elf_backend_want_plt_sym | |
5368 | #define elf_backend_want_plt_sym 0 | |
5369 | ||
5370 | #include "elf64-target.h" | |
5371 | ||
5372 | /* FreeBSD K1OM support. */ | |
5373 | ||
5374 | #undef TARGET_LITTLE_SYM | |
5375 | #define TARGET_LITTLE_SYM bfd_elf64_k1om_freebsd_vec | |
5376 | #undef TARGET_LITTLE_NAME | |
5377 | #define TARGET_LITTLE_NAME "elf64-k1om-freebsd" | |
5378 | ||
5379 | #undef ELF_OSABI | |
5380 | #define ELF_OSABI ELFOSABI_FREEBSD | |
5381 | ||
5382 | #undef elf64_bed | |
5383 | #define elf64_bed elf64_k1om_fbsd_bed | |
5384 | ||
5385 | #include "elf64-target.h" | |
5386 | ||
351f65ca L |
5387 | /* 32bit x86-64 support. */ |
5388 | ||
351f65ca L |
5389 | #undef TARGET_LITTLE_SYM |
5390 | #define TARGET_LITTLE_SYM bfd_elf32_x86_64_vec | |
5391 | #undef TARGET_LITTLE_NAME | |
5392 | #define TARGET_LITTLE_NAME "elf32-x86-64" | |
8059fb19 | 5393 | #undef elf32_bed |
351f65ca L |
5394 | |
5395 | #undef ELF_ARCH | |
5396 | #define ELF_ARCH bfd_arch_i386 | |
5397 | ||
5398 | #undef ELF_MACHINE_CODE | |
5399 | #define ELF_MACHINE_CODE EM_X86_64 | |
5400 | ||
351f65ca L |
5401 | #undef ELF_OSABI |
5402 | ||
351f65ca L |
5403 | #undef elf_backend_object_p |
5404 | #define elf_backend_object_p \ | |
5405 | elf32_x86_64_elf_object_p | |
5406 | ||
5407 | #undef elf_backend_bfd_from_remote_memory | |
5408 | #define elf_backend_bfd_from_remote_memory \ | |
5409 | _bfd_elf32_bfd_from_remote_memory | |
5410 | ||
5411 | #undef elf_backend_size_info | |
5412 | #define elf_backend_size_info \ | |
5413 | _bfd_elf32_size_info | |
5414 | ||
5415 | #include "elf32-target.h" |