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351f65ca | 1 | /* X86-64 specific support for ELF |
b90efa5b | 2 | Copyright (C) 2000-2015 Free Software Foundation, Inc. |
8d88c4ca NC |
3 | Contributed by Jan Hubicka <jh@suse.cz>. |
4 | ||
ae9a127f | 5 | This file is part of BFD, the Binary File Descriptor library. |
8d88c4ca | 6 | |
ae9a127f NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 10 | (at your option) any later version. |
8d88c4ca | 11 | |
ae9a127f NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
8d88c4ca | 16 | |
ae9a127f NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
8d88c4ca | 21 | |
8d88c4ca | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
c434dee6 | 24 | #include "bfdlink.h" |
8d88c4ca NC |
25 | #include "libbfd.h" |
26 | #include "elf-bfd.h" | |
5a68afcf | 27 | #include "elf-nacl.h" |
142411ca | 28 | #include "bfd_stdint.h" |
c25bc9fc L |
29 | #include "objalloc.h" |
30 | #include "hashtab.h" | |
e41b3a13 | 31 | #include "dwarf2.h" |
d7921315 | 32 | #include "libiberty.h" |
8d88c4ca | 33 | |
56ceb5b5 | 34 | #include "opcode/i386.h" |
8d88c4ca NC |
35 | #include "elf/x86-64.h" |
36 | ||
8fd79e71 L |
37 | #ifdef CORE_HEADER |
38 | #include <stdarg.h> | |
39 | #include CORE_HEADER | |
40 | #endif | |
41 | ||
8d88c4ca NC |
42 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ |
43 | #define MINUS_ONE (~ (bfd_vma) 0) | |
44 | ||
351f65ca L |
45 | /* Since both 32-bit and 64-bit x86-64 encode relocation type in the |
46 | identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get | |
47 | relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE | |
48 | since they are the same. */ | |
49 | ||
50 | #define ABI_64_P(abfd) \ | |
51 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) | |
52 | ||
8d88c4ca | 53 | /* The relocation "howto" table. Order of fields: |
7b81dfbb AJ |
54 | type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow, |
55 | special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */ | |
70256ad8 AJ |
56 | static reloc_howto_type x86_64_elf_howto_table[] = |
57 | { | |
6346d5ca | 58 | HOWTO(R_X86_64_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont, |
b34976b6 AM |
59 | bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000, |
60 | FALSE), | |
61 | HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
62 | bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE, | |
63 | FALSE), | |
64 | HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
65 | bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff, | |
66 | TRUE), | |
67 | HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
68 | bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff, | |
69 | FALSE), | |
70 | HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
71 | bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff, | |
72 | TRUE), | |
73 | HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
74 | bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff, | |
75 | FALSE), | |
76 | HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
77 | bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE, | |
78 | MINUS_ONE, FALSE), | |
79 | HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
80 | bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE, | |
81 | MINUS_ONE, FALSE), | |
82 | HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
83 | bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE, | |
84 | MINUS_ONE, FALSE), | |
85 | HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
86 | bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff, | |
87 | 0xffffffff, TRUE), | |
88 | HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned, | |
89 | bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff, | |
90 | FALSE), | |
91 | HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
92 | bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff, | |
93 | FALSE), | |
94 | HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
95 | bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE), | |
b0360d8c | 96 | HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield, |
b34976b6 | 97 | bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE), |
ac2aa337 | 98 | HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
b34976b6 AM |
99 | bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE), |
100 | HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
101 | bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE), | |
102 | HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
103 | bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE, | |
104 | MINUS_ONE, FALSE), | |
105 | HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
106 | bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE, | |
107 | MINUS_ONE, FALSE), | |
108 | HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
109 | bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE, | |
110 | MINUS_ONE, FALSE), | |
111 | HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
112 | bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff, | |
113 | 0xffffffff, TRUE), | |
114 | HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
115 | bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff, | |
116 | 0xffffffff, TRUE), | |
ac2aa337 | 117 | HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed, |
b34976b6 AM |
118 | bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff, |
119 | 0xffffffff, FALSE), | |
120 | HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
121 | bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff, | |
122 | 0xffffffff, TRUE), | |
123 | HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
124 | bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff, | |
125 | 0xffffffff, FALSE), | |
d6ab8113 JB |
126 | HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
127 | bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE, | |
128 | TRUE), | |
129 | HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
130 | bfd_elf_generic_reloc, "R_X86_64_GOTOFF64", | |
131 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
132 | HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
133 | bfd_elf_generic_reloc, "R_X86_64_GOTPC32", | |
134 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
7b81dfbb AJ |
135 | HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed, |
136 | bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE, | |
137 | FALSE), | |
138 | HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed, | |
139 | bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE, | |
140 | MINUS_ONE, TRUE), | |
141 | HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed, | |
142 | bfd_elf_generic_reloc, "R_X86_64_GOTPC64", | |
143 | FALSE, MINUS_ONE, MINUS_ONE, TRUE), | |
144 | HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed, | |
145 | bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE, | |
146 | MINUS_ONE, FALSE), | |
147 | HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed, | |
148 | bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE, | |
149 | MINUS_ONE, FALSE), | |
1788fc08 L |
150 | HOWTO(R_X86_64_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned, |
151 | bfd_elf_generic_reloc, "R_X86_64_SIZE32", FALSE, 0xffffffff, 0xffffffff, | |
152 | FALSE), | |
153 | HOWTO(R_X86_64_SIZE64, 0, 4, 64, FALSE, 0, complain_overflow_unsigned, | |
154 | bfd_elf_generic_reloc, "R_X86_64_SIZE64", FALSE, MINUS_ONE, MINUS_ONE, | |
155 | FALSE), | |
67a4f2b7 AO |
156 | HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0, |
157 | complain_overflow_bitfield, bfd_elf_generic_reloc, | |
158 | "R_X86_64_GOTPC32_TLSDESC", | |
159 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
160 | HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0, | |
161 | complain_overflow_dont, bfd_elf_generic_reloc, | |
162 | "R_X86_64_TLSDESC_CALL", | |
163 | FALSE, 0, 0, FALSE), | |
164 | HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0, | |
165 | complain_overflow_bitfield, bfd_elf_generic_reloc, | |
166 | "R_X86_64_TLSDESC", | |
167 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
cbe950e9 L |
168 | HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
169 | bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE, | |
170 | MINUS_ONE, FALSE), | |
64d25c44 L |
171 | HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
172 | bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE, | |
173 | MINUS_ONE, FALSE), | |
c3320543 L |
174 | HOWTO(R_X86_64_PC32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed, |
175 | bfd_elf_generic_reloc, "R_X86_64_PC32_BND", FALSE, 0xffffffff, 0xffffffff, | |
176 | TRUE), | |
177 | HOWTO(R_X86_64_PLT32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
178 | bfd_elf_generic_reloc, "R_X86_64_PLT32_BND", FALSE, 0xffffffff, 0xffffffff, | |
179 | TRUE), | |
56ceb5b5 L |
180 | HOWTO(R_X86_64_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed, |
181 | bfd_elf_generic_reloc, "R_X86_64_GOTPCRELX", FALSE, 0xffffffff, | |
182 | 0xffffffff, TRUE), | |
183 | HOWTO(R_X86_64_REX_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
184 | bfd_elf_generic_reloc, "R_X86_64_REX_GOTPCRELX", FALSE, 0xffffffff, | |
185 | 0xffffffff, TRUE), | |
fe4770f4 | 186 | |
a33d77bc JB |
187 | /* We have a gap in the reloc numbers here. |
188 | R_X86_64_standard counts the number up to this point, and | |
189 | R_X86_64_vt_offset is the value to subtract from a reloc type of | |
190 | R_X86_64_GNU_VT* to form an index into this table. */ | |
56ceb5b5 | 191 | #define R_X86_64_standard (R_X86_64_REX_GOTPCRELX + 1) |
a33d77bc JB |
192 | #define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard) |
193 | ||
fe4770f4 | 194 | /* GNU extension to record C++ vtable hierarchy. */ |
b34976b6 AM |
195 | HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
196 | NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE), | |
fe4770f4 AJ |
197 | |
198 | /* GNU extension to record C++ vtable member usage. */ | |
b34976b6 AM |
199 | HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
200 | _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0, | |
d7921315 L |
201 | FALSE), |
202 | ||
203 | /* Use complain_overflow_bitfield on R_X86_64_32 for x32. */ | |
204 | HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
205 | bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff, | |
206 | FALSE) | |
8d88c4ca NC |
207 | }; |
208 | ||
d8045f23 NC |
209 | #define IS_X86_64_PCREL_TYPE(TYPE) \ |
210 | ( ((TYPE) == R_X86_64_PC8) \ | |
211 | || ((TYPE) == R_X86_64_PC16) \ | |
212 | || ((TYPE) == R_X86_64_PC32) \ | |
c3320543 | 213 | || ((TYPE) == R_X86_64_PC32_BND) \ |
d8045f23 NC |
214 | || ((TYPE) == R_X86_64_PC64)) |
215 | ||
8d88c4ca | 216 | /* Map BFD relocs to the x86_64 elf relocs. */ |
70256ad8 AJ |
217 | struct elf_reloc_map |
218 | { | |
8d88c4ca NC |
219 | bfd_reloc_code_real_type bfd_reloc_val; |
220 | unsigned char elf_reloc_val; | |
221 | }; | |
222 | ||
dc810e39 | 223 | static const struct elf_reloc_map x86_64_reloc_map[] = |
8d88c4ca | 224 | { |
70256ad8 AJ |
225 | { BFD_RELOC_NONE, R_X86_64_NONE, }, |
226 | { BFD_RELOC_64, R_X86_64_64, }, | |
227 | { BFD_RELOC_32_PCREL, R_X86_64_PC32, }, | |
228 | { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,}, | |
229 | { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,}, | |
230 | { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, }, | |
231 | { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, }, | |
232 | { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, }, | |
233 | { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, }, | |
234 | { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, }, | |
235 | { BFD_RELOC_32, R_X86_64_32, }, | |
236 | { BFD_RELOC_X86_64_32S, R_X86_64_32S, }, | |
237 | { BFD_RELOC_16, R_X86_64_16, }, | |
238 | { BFD_RELOC_16_PCREL, R_X86_64_PC16, }, | |
239 | { BFD_RELOC_8, R_X86_64_8, }, | |
240 | { BFD_RELOC_8_PCREL, R_X86_64_PC8, }, | |
bffbf940 JJ |
241 | { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, }, |
242 | { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, }, | |
243 | { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, }, | |
244 | { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, }, | |
245 | { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, }, | |
246 | { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, }, | |
247 | { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, }, | |
248 | { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, }, | |
d6ab8113 JB |
249 | { BFD_RELOC_64_PCREL, R_X86_64_PC64, }, |
250 | { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, }, | |
251 | { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, }, | |
7b81dfbb AJ |
252 | { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, }, |
253 | { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, }, | |
254 | { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, }, | |
255 | { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, }, | |
256 | { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, }, | |
1788fc08 L |
257 | { BFD_RELOC_SIZE32, R_X86_64_SIZE32, }, |
258 | { BFD_RELOC_SIZE64, R_X86_64_SIZE64, }, | |
67a4f2b7 AO |
259 | { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, }, |
260 | { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, }, | |
261 | { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, }, | |
cbe950e9 | 262 | { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, }, |
56ceb5b5 L |
263 | { BFD_RELOC_X86_64_PC32_BND, R_X86_64_PC32_BND, }, |
264 | { BFD_RELOC_X86_64_PLT32_BND, R_X86_64_PLT32_BND, }, | |
265 | { BFD_RELOC_X86_64_GOTPCRELX, R_X86_64_GOTPCRELX, }, | |
266 | { BFD_RELOC_X86_64_REX_GOTPCRELX, R_X86_64_REX_GOTPCRELX, }, | |
fe4770f4 AJ |
267 | { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, }, |
268 | { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, }, | |
8d88c4ca NC |
269 | }; |
270 | ||
67a4f2b7 | 271 | static reloc_howto_type * |
351f65ca | 272 | elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type) |
67a4f2b7 AO |
273 | { |
274 | unsigned i; | |
275 | ||
d7921315 L |
276 | if (r_type == (unsigned int) R_X86_64_32) |
277 | { | |
278 | if (ABI_64_P (abfd)) | |
279 | i = r_type; | |
280 | else | |
281 | i = ARRAY_SIZE (x86_64_elf_howto_table) - 1; | |
282 | } | |
283 | else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT | |
284 | || r_type >= (unsigned int) R_X86_64_max) | |
67a4f2b7 AO |
285 | { |
286 | if (r_type >= (unsigned int) R_X86_64_standard) | |
287 | { | |
288 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
289 | abfd, (int) r_type); | |
290 | r_type = R_X86_64_NONE; | |
291 | } | |
292 | i = r_type; | |
293 | } | |
294 | else | |
295 | i = r_type - (unsigned int) R_X86_64_vt_offset; | |
296 | BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type); | |
297 | return &x86_64_elf_howto_table[i]; | |
298 | } | |
8d88c4ca NC |
299 | |
300 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
301 | static reloc_howto_type * | |
351f65ca L |
302 | elf_x86_64_reloc_type_lookup (bfd *abfd, |
303 | bfd_reloc_code_real_type code) | |
8d88c4ca NC |
304 | { |
305 | unsigned int i; | |
27482721 | 306 | |
8d88c4ca NC |
307 | for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map); |
308 | i++) | |
309 | { | |
310 | if (x86_64_reloc_map[i].bfd_reloc_val == code) | |
351f65ca L |
311 | return elf_x86_64_rtype_to_howto (abfd, |
312 | x86_64_reloc_map[i].elf_reloc_val); | |
8d88c4ca | 313 | } |
5860e3f8 | 314 | return NULL; |
8d88c4ca NC |
315 | } |
316 | ||
157090f7 | 317 | static reloc_howto_type * |
d7921315 | 318 | elf_x86_64_reloc_name_lookup (bfd *abfd, |
351f65ca | 319 | const char *r_name) |
157090f7 AM |
320 | { |
321 | unsigned int i; | |
322 | ||
d7921315 L |
323 | if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0) |
324 | { | |
325 | /* Get x32 R_X86_64_32. */ | |
326 | reloc_howto_type *reloc | |
327 | = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1]; | |
328 | BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32); | |
329 | return reloc; | |
330 | } | |
331 | ||
332 | for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++) | |
157090f7 AM |
333 | if (x86_64_elf_howto_table[i].name != NULL |
334 | && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0) | |
335 | return &x86_64_elf_howto_table[i]; | |
336 | ||
337 | return NULL; | |
338 | } | |
339 | ||
8d88c4ca | 340 | /* Given an x86_64 ELF reloc type, fill in an arelent structure. */ |
8da6118f | 341 | |
8d88c4ca | 342 | static void |
351f65ca L |
343 | elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
344 | Elf_Internal_Rela *dst) | |
8d88c4ca | 345 | { |
67a4f2b7 | 346 | unsigned r_type; |
8d88c4ca | 347 | |
351f65ca L |
348 | r_type = ELF32_R_TYPE (dst->r_info); |
349 | cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type); | |
8d88c4ca NC |
350 | BFD_ASSERT (r_type == cache_ptr->howto->type); |
351 | } | |
70256ad8 | 352 | \f |
3bab7989 | 353 | /* Support for core dump NOTE sections. */ |
b34976b6 | 354 | static bfd_boolean |
351f65ca | 355 | elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
356 | { |
357 | int offset; | |
eea6121a | 358 | size_t size; |
3bab7989 ML |
359 | |
360 | switch (note->descsz) | |
361 | { | |
362 | default: | |
b34976b6 | 363 | return FALSE; |
3bab7989 | 364 | |
bcd823f1 L |
365 | case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */ |
366 | /* pr_cursig */ | |
228e534f | 367 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
bcd823f1 L |
368 | |
369 | /* pr_pid */ | |
228e534f | 370 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
bcd823f1 L |
371 | |
372 | /* pr_reg */ | |
373 | offset = 72; | |
374 | size = 216; | |
375 | ||
376 | break; | |
377 | ||
3bab7989 ML |
378 | case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */ |
379 | /* pr_cursig */ | |
228e534f | 380 | elf_tdata (abfd)->core->signal |
3bab7989 ML |
381 | = bfd_get_16 (abfd, note->descdata + 12); |
382 | ||
383 | /* pr_pid */ | |
228e534f | 384 | elf_tdata (abfd)->core->lwpid |
3bab7989 ML |
385 | = bfd_get_32 (abfd, note->descdata + 32); |
386 | ||
387 | /* pr_reg */ | |
388 | offset = 112; | |
eea6121a | 389 | size = 216; |
3bab7989 ML |
390 | |
391 | break; | |
392 | } | |
393 | ||
394 | /* Make a ".reg/999" section. */ | |
395 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 396 | size, note->descpos + offset); |
3bab7989 ML |
397 | } |
398 | ||
b34976b6 | 399 | static bfd_boolean |
351f65ca | 400 | elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
401 | { |
402 | switch (note->descsz) | |
403 | { | |
404 | default: | |
b34976b6 | 405 | return FALSE; |
3bab7989 | 406 | |
bcd823f1 | 407 | case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */ |
228e534f | 408 | elf_tdata (abfd)->core->pid |
bcd823f1 | 409 | = bfd_get_32 (abfd, note->descdata + 12); |
228e534f | 410 | elf_tdata (abfd)->core->program |
bcd823f1 | 411 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 412 | elf_tdata (abfd)->core->command |
bcd823f1 L |
413 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
414 | break; | |
415 | ||
3bab7989 | 416 | case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */ |
228e534f | 417 | elf_tdata (abfd)->core->pid |
261b8d08 | 418 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 419 | elf_tdata (abfd)->core->program |
3bab7989 | 420 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 421 | elf_tdata (abfd)->core->command |
3bab7989 ML |
422 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
423 | } | |
424 | ||
425 | /* Note that for some reason, a spurious space is tacked | |
426 | onto the end of the args in some (at least one anyway) | |
427 | implementations, so strip it off if it exists. */ | |
428 | ||
429 | { | |
228e534f | 430 | char *command = elf_tdata (abfd)->core->command; |
3bab7989 ML |
431 | int n = strlen (command); |
432 | ||
433 | if (0 < n && command[n - 1] == ' ') | |
434 | command[n - 1] = '\0'; | |
435 | } | |
436 | ||
b34976b6 | 437 | return TRUE; |
3bab7989 | 438 | } |
8fd79e71 L |
439 | |
440 | #ifdef CORE_HEADER | |
441 | static char * | |
442 | elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
443 | int note_type, ...) | |
444 | { | |
445 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8fd79e71 L |
446 | va_list ap; |
447 | const char *fname, *psargs; | |
448 | long pid; | |
449 | int cursig; | |
450 | const void *gregs; | |
451 | ||
452 | switch (note_type) | |
453 | { | |
454 | default: | |
455 | return NULL; | |
456 | ||
457 | case NT_PRPSINFO: | |
458 | va_start (ap, note_type); | |
459 | fname = va_arg (ap, const char *); | |
460 | psargs = va_arg (ap, const char *); | |
461 | va_end (ap); | |
462 | ||
463 | if (bed->s->elfclass == ELFCLASS32) | |
464 | { | |
465 | prpsinfo32_t data; | |
466 | memset (&data, 0, sizeof (data)); | |
467 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
468 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
e85c6a70 JK |
469 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
470 | &data, sizeof (data)); | |
8fd79e71 L |
471 | } |
472 | else | |
473 | { | |
b1bd052d | 474 | prpsinfo64_t data; |
8fd79e71 L |
475 | memset (&data, 0, sizeof (data)); |
476 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
477 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
e85c6a70 JK |
478 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
479 | &data, sizeof (data)); | |
8fd79e71 | 480 | } |
e85c6a70 | 481 | /* NOTREACHED */ |
8fd79e71 L |
482 | |
483 | case NT_PRSTATUS: | |
484 | va_start (ap, note_type); | |
485 | pid = va_arg (ap, long); | |
486 | cursig = va_arg (ap, int); | |
487 | gregs = va_arg (ap, const void *); | |
488 | va_end (ap); | |
489 | ||
490 | if (bed->s->elfclass == ELFCLASS32) | |
491 | { | |
492 | if (bed->elf_machine_code == EM_X86_64) | |
493 | { | |
494 | prstatusx32_t prstat; | |
495 | memset (&prstat, 0, sizeof (prstat)); | |
496 | prstat.pr_pid = pid; | |
497 | prstat.pr_cursig = cursig; | |
498 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
499 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
500 | &prstat, sizeof (prstat)); | |
8fd79e71 L |
501 | } |
502 | else | |
503 | { | |
504 | prstatus32_t prstat; | |
505 | memset (&prstat, 0, sizeof (prstat)); | |
506 | prstat.pr_pid = pid; | |
507 | prstat.pr_cursig = cursig; | |
508 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
509 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
510 | &prstat, sizeof (prstat)); | |
8fd79e71 L |
511 | } |
512 | } | |
513 | else | |
514 | { | |
b1bd052d | 515 | prstatus64_t prstat; |
8fd79e71 L |
516 | memset (&prstat, 0, sizeof (prstat)); |
517 | prstat.pr_pid = pid; | |
518 | prstat.pr_cursig = cursig; | |
519 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
520 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
521 | &prstat, sizeof (prstat)); | |
8fd79e71 | 522 | } |
8fd79e71 | 523 | } |
e85c6a70 | 524 | /* NOTREACHED */ |
8fd79e71 L |
525 | } |
526 | #endif | |
3bab7989 | 527 | \f |
407443a3 | 528 | /* Functions for the x86-64 ELF linker. */ |
70256ad8 | 529 | |
407443a3 | 530 | /* The name of the dynamic interpreter. This is put in the .interp |
70256ad8 AJ |
531 | section. */ |
532 | ||
351f65ca | 533 | #define ELF64_DYNAMIC_INTERPRETER "/lib/ld64.so.1" |
eec9dd95 | 534 | #define ELF32_DYNAMIC_INTERPRETER "/lib/ldx32.so.1" |
70256ad8 | 535 | |
d40d037c AJ |
536 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
537 | copying dynamic variables from a shared lib into an app's dynbss | |
538 | section, and instead use a dynamic relocation to point into the | |
539 | shared lib. */ | |
540 | #define ELIMINATE_COPY_RELOCS 1 | |
541 | ||
70256ad8 AJ |
542 | /* The size in bytes of an entry in the global offset table. */ |
543 | ||
544 | #define GOT_ENTRY_SIZE 8 | |
8d88c4ca | 545 | |
70256ad8 | 546 | /* The size in bytes of an entry in the procedure linkage table. */ |
8d88c4ca | 547 | |
70256ad8 AJ |
548 | #define PLT_ENTRY_SIZE 16 |
549 | ||
550 | /* The first entry in a procedure linkage table looks like this. See the | |
551 | SVR4 ABI i386 supplement and the x86-64 ABI to see how this works. */ | |
552 | ||
351f65ca | 553 | static const bfd_byte elf_x86_64_plt0_entry[PLT_ENTRY_SIZE] = |
70256ad8 | 554 | { |
653165cc AJ |
555 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ |
556 | 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */ | |
10efb593 | 557 | 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */ |
70256ad8 AJ |
558 | }; |
559 | ||
560 | /* Subsequent entries in a procedure linkage table look like this. */ | |
561 | ||
351f65ca | 562 | static const bfd_byte elf_x86_64_plt_entry[PLT_ENTRY_SIZE] = |
70256ad8 | 563 | { |
653165cc | 564 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ |
407443a3 | 565 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ |
653165cc | 566 | 0x68, /* pushq immediate */ |
70256ad8 AJ |
567 | 0, 0, 0, 0, /* replaced with index into relocation table. */ |
568 | 0xe9, /* jmp relative */ | |
569 | 0, 0, 0, 0 /* replaced with offset to start of .plt0. */ | |
570 | }; | |
571 | ||
0ff2b86e L |
572 | /* The first entry in a procedure linkage table with BND relocations |
573 | like this. */ | |
574 | ||
575 | static const bfd_byte elf_x86_64_bnd_plt0_entry[PLT_ENTRY_SIZE] = | |
576 | { | |
577 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ | |
578 | 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */ | |
579 | 0x0f, 0x1f, 0 /* nopl (%rax) */ | |
580 | }; | |
581 | ||
582 | /* Subsequent entries for legacy branches in a procedure linkage table | |
583 | with BND relocations look like this. */ | |
584 | ||
585 | static const bfd_byte elf_x86_64_legacy_plt_entry[PLT_ENTRY_SIZE] = | |
586 | { | |
587 | 0x68, 0, 0, 0, 0, /* pushq immediate */ | |
588 | 0xe9, 0, 0, 0, 0, /* jmpq relative */ | |
589 | 0x66, 0x0f, 0x1f, 0x44, 0, 0 /* nopw (%rax,%rax,1) */ | |
590 | }; | |
591 | ||
592 | /* Subsequent entries for branches with BND prefx in a procedure linkage | |
593 | table with BND relocations look like this. */ | |
594 | ||
595 | static const bfd_byte elf_x86_64_bnd_plt_entry[PLT_ENTRY_SIZE] = | |
596 | { | |
597 | 0x68, 0, 0, 0, 0, /* pushq immediate */ | |
598 | 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */ | |
599 | 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */ | |
600 | }; | |
601 | ||
602 | /* Entries for legacy branches in the second procedure linkage table | |
603 | look like this. */ | |
604 | ||
605 | static const bfd_byte elf_x86_64_legacy_plt2_entry[8] = | |
606 | { | |
607 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ | |
608 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ | |
609 | 0x66, 0x90 /* xchg %ax,%ax */ | |
610 | }; | |
611 | ||
612 | /* Entries for branches with BND prefix in the second procedure linkage | |
613 | table look like this. */ | |
614 | ||
615 | static const bfd_byte elf_x86_64_bnd_plt2_entry[8] = | |
616 | { | |
617 | 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */ | |
618 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ | |
619 | 0x90 /* nop */ | |
620 | }; | |
621 | ||
e41b3a13 JJ |
622 | /* .eh_frame covering the .plt section. */ |
623 | ||
624 | static const bfd_byte elf_x86_64_eh_frame_plt[] = | |
625 | { | |
626 | #define PLT_CIE_LENGTH 20 | |
627 | #define PLT_FDE_LENGTH 36 | |
628 | #define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8 | |
629 | #define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12 | |
630 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
631 | 0, 0, 0, 0, /* CIE ID */ | |
632 | 1, /* CIE version */ | |
633 | 'z', 'R', 0, /* Augmentation string */ | |
634 | 1, /* Code alignment factor */ | |
635 | 0x78, /* Data alignment factor */ | |
636 | 16, /* Return address column */ | |
637 | 1, /* Augmentation size */ | |
638 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
639 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
640 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
641 | DW_CFA_nop, DW_CFA_nop, | |
642 | ||
643 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
644 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
645 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
646 | 0, 0, 0, 0, /* .plt size goes here */ | |
647 | 0, /* Augmentation size */ | |
648 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
649 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
650 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
651 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
652 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
653 | 11, /* Block length */ | |
654 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
655 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
656 | DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge, | |
657 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
658 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
659 | }; | |
660 | ||
eed180f8 RM |
661 | /* Architecture-specific backend data for x86-64. */ |
662 | ||
663 | struct elf_x86_64_backend_data | |
664 | { | |
665 | /* Templates for the initial PLT entry and for subsequent entries. */ | |
666 | const bfd_byte *plt0_entry; | |
667 | const bfd_byte *plt_entry; | |
668 | unsigned int plt_entry_size; /* Size of each PLT entry. */ | |
669 | ||
670 | /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */ | |
671 | unsigned int plt0_got1_offset; | |
672 | unsigned int plt0_got2_offset; | |
673 | ||
674 | /* Offset of the end of the PC-relative instruction containing | |
675 | plt0_got2_offset. */ | |
676 | unsigned int plt0_got2_insn_end; | |
677 | ||
678 | /* Offsets into plt_entry that are to be replaced with... */ | |
679 | unsigned int plt_got_offset; /* ... address of this symbol in .got. */ | |
680 | unsigned int plt_reloc_offset; /* ... offset into relocation table. */ | |
681 | unsigned int plt_plt_offset; /* ... offset to start of .plt. */ | |
682 | ||
683 | /* Length of the PC-relative instruction containing plt_got_offset. */ | |
684 | unsigned int plt_got_insn_size; | |
685 | ||
686 | /* Offset of the end of the PC-relative jump to plt0_entry. */ | |
687 | unsigned int plt_plt_insn_end; | |
688 | ||
689 | /* Offset into plt_entry where the initial value of the GOT entry points. */ | |
690 | unsigned int plt_lazy_offset; | |
691 | ||
692 | /* .eh_frame covering the .plt section. */ | |
693 | const bfd_byte *eh_frame_plt; | |
694 | unsigned int eh_frame_plt_size; | |
695 | }; | |
696 | ||
f8222080 L |
697 | #define get_elf_x86_64_arch_data(bed) \ |
698 | ((const struct elf_x86_64_backend_data *) (bed)->arch_data) | |
699 | ||
eed180f8 | 700 | #define get_elf_x86_64_backend_data(abfd) \ |
f8222080 | 701 | get_elf_x86_64_arch_data (get_elf_backend_data (abfd)) |
eed180f8 RM |
702 | |
703 | #define GET_PLT_ENTRY_SIZE(abfd) \ | |
704 | get_elf_x86_64_backend_data (abfd)->plt_entry_size | |
705 | ||
706 | /* These are the standard parameters. */ | |
707 | static const struct elf_x86_64_backend_data elf_x86_64_arch_bed = | |
708 | { | |
709 | elf_x86_64_plt0_entry, /* plt0_entry */ | |
710 | elf_x86_64_plt_entry, /* plt_entry */ | |
711 | sizeof (elf_x86_64_plt_entry), /* plt_entry_size */ | |
712 | 2, /* plt0_got1_offset */ | |
713 | 8, /* plt0_got2_offset */ | |
714 | 12, /* plt0_got2_insn_end */ | |
715 | 2, /* plt_got_offset */ | |
716 | 7, /* plt_reloc_offset */ | |
717 | 12, /* plt_plt_offset */ | |
718 | 6, /* plt_got_insn_size */ | |
719 | PLT_ENTRY_SIZE, /* plt_plt_insn_end */ | |
720 | 6, /* plt_lazy_offset */ | |
721 | elf_x86_64_eh_frame_plt, /* eh_frame_plt */ | |
722 | sizeof (elf_x86_64_eh_frame_plt), /* eh_frame_plt_size */ | |
723 | }; | |
724 | ||
0ff2b86e L |
725 | static const struct elf_x86_64_backend_data elf_x86_64_bnd_arch_bed = |
726 | { | |
727 | elf_x86_64_bnd_plt0_entry, /* plt0_entry */ | |
728 | elf_x86_64_bnd_plt_entry, /* plt_entry */ | |
729 | sizeof (elf_x86_64_bnd_plt_entry), /* plt_entry_size */ | |
730 | 2, /* plt0_got1_offset */ | |
731 | 1+8, /* plt0_got2_offset */ | |
732 | 1+12, /* plt0_got2_insn_end */ | |
733 | 1+2, /* plt_got_offset */ | |
734 | 1, /* plt_reloc_offset */ | |
735 | 7, /* plt_plt_offset */ | |
736 | 1+6, /* plt_got_insn_size */ | |
737 | 11, /* plt_plt_insn_end */ | |
738 | 0, /* plt_lazy_offset */ | |
739 | elf_x86_64_eh_frame_plt, /* eh_frame_plt */ | |
740 | sizeof (elf_x86_64_eh_frame_plt), /* eh_frame_plt_size */ | |
741 | }; | |
742 | ||
eed180f8 RM |
743 | #define elf_backend_arch_data &elf_x86_64_arch_bed |
744 | ||
70256ad8 AJ |
745 | /* x86-64 ELF linker hash entry. */ |
746 | ||
351f65ca | 747 | struct elf_x86_64_link_hash_entry |
70256ad8 | 748 | { |
c434dee6 | 749 | struct elf_link_hash_entry elf; |
70256ad8 | 750 | |
c434dee6 | 751 | /* Track dynamic relocs copied for this symbol. */ |
e03a8ed8 | 752 | struct elf_dyn_relocs *dyn_relocs; |
bffbf940 JJ |
753 | |
754 | #define GOT_UNKNOWN 0 | |
755 | #define GOT_NORMAL 1 | |
756 | #define GOT_TLS_GD 2 | |
757 | #define GOT_TLS_IE 3 | |
67a4f2b7 AO |
758 | #define GOT_TLS_GDESC 4 |
759 | #define GOT_TLS_GD_BOTH_P(type) \ | |
760 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
761 | #define GOT_TLS_GD_P(type) \ | |
762 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
763 | #define GOT_TLS_GDESC_P(type) \ | |
764 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
765 | #define GOT_TLS_GD_ANY_P(type) \ | |
766 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
bffbf940 | 767 | unsigned char tls_type; |
67a4f2b7 | 768 | |
bc696fd5 L |
769 | /* TRUE if a weak symbol with a real definition needs a copy reloc. |
770 | When there is a weak symbol with a real definition, the processor | |
771 | independent code will have arranged for us to see the real | |
772 | definition first. We need to copy the needs_copy bit from the | |
773 | real definition and check it when allowing copy reloc in PIE. */ | |
774 | unsigned int needs_copy : 1; | |
775 | ||
0ff2b86e | 776 | /* TRUE if symbol has at least one BND relocation. */ |
bc696fd5 | 777 | unsigned int has_bnd_reloc : 1; |
0ff2b86e | 778 | |
04ebc307 L |
779 | /* Reference count of C/C++ function pointer relocations in read-write |
780 | section which can be resolved at run-time. */ | |
781 | bfd_signed_vma func_pointer_refcount; | |
782 | ||
dd7e64d4 L |
783 | /* Information about the GOT PLT entry. Filled when there are both |
784 | GOT and PLT relocations against the same function. */ | |
785 | union gotplt_union plt_got; | |
786 | ||
0ff2b86e L |
787 | /* Information about the second PLT entry. Filled when has_bnd_reloc is |
788 | set. */ | |
789 | union gotplt_union plt_bnd; | |
790 | ||
67a4f2b7 AO |
791 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, |
792 | starting at the end of the jump table. */ | |
793 | bfd_vma tlsdesc_got; | |
bffbf940 JJ |
794 | }; |
795 | ||
351f65ca L |
796 | #define elf_x86_64_hash_entry(ent) \ |
797 | ((struct elf_x86_64_link_hash_entry *)(ent)) | |
bffbf940 | 798 | |
351f65ca | 799 | struct elf_x86_64_obj_tdata |
bffbf940 JJ |
800 | { |
801 | struct elf_obj_tdata root; | |
802 | ||
803 | /* tls_type for each local got entry. */ | |
804 | char *local_got_tls_type; | |
67a4f2b7 AO |
805 | |
806 | /* GOTPLT entries for TLS descriptors. */ | |
807 | bfd_vma *local_tlsdesc_gotent; | |
70256ad8 AJ |
808 | }; |
809 | ||
351f65ca L |
810 | #define elf_x86_64_tdata(abfd) \ |
811 | ((struct elf_x86_64_obj_tdata *) (abfd)->tdata.any) | |
bffbf940 | 812 | |
351f65ca L |
813 | #define elf_x86_64_local_got_tls_type(abfd) \ |
814 | (elf_x86_64_tdata (abfd)->local_got_tls_type) | |
bffbf940 | 815 | |
351f65ca L |
816 | #define elf_x86_64_local_tlsdesc_gotent(abfd) \ |
817 | (elf_x86_64_tdata (abfd)->local_tlsdesc_gotent) | |
bffbf940 | 818 | |
0ffa91dd NC |
819 | #define is_x86_64_elf(bfd) \ |
820 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
821 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 822 | && elf_object_id (bfd) == X86_64_ELF_DATA) |
0ffa91dd NC |
823 | |
824 | static bfd_boolean | |
351f65ca | 825 | elf_x86_64_mkobject (bfd *abfd) |
0ffa91dd | 826 | { |
351f65ca | 827 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_x86_64_obj_tdata), |
4dfe6ac6 | 828 | X86_64_ELF_DATA); |
0ffa91dd NC |
829 | } |
830 | ||
c434dee6 | 831 | /* x86-64 ELF linker hash table. */ |
8d88c4ca | 832 | |
351f65ca | 833 | struct elf_x86_64_link_hash_table |
407443a3 | 834 | { |
c434dee6 | 835 | struct elf_link_hash_table elf; |
70256ad8 | 836 | |
c434dee6 | 837 | /* Short-cuts to get to dynamic linker sections. */ |
c434dee6 AJ |
838 | asection *sdynbss; |
839 | asection *srelbss; | |
e41b3a13 | 840 | asection *plt_eh_frame; |
0ff2b86e | 841 | asection *plt_bnd; |
dd7e64d4 | 842 | asection *plt_got; |
70256ad8 | 843 | |
4dfe6ac6 NC |
844 | union |
845 | { | |
bffbf940 JJ |
846 | bfd_signed_vma refcount; |
847 | bfd_vma offset; | |
848 | } tls_ld_got; | |
849 | ||
67a4f2b7 AO |
850 | /* The amount of space used by the jump slots in the GOT. */ |
851 | bfd_vma sgotplt_jump_table_size; | |
852 | ||
87d72d41 AM |
853 | /* Small local sym cache. */ |
854 | struct sym_cache sym_cache; | |
9f03412a | 855 | |
351f65ca L |
856 | bfd_vma (*r_info) (bfd_vma, bfd_vma); |
857 | bfd_vma (*r_sym) (bfd_vma); | |
248775ba | 858 | unsigned int pointer_r_type; |
351f65ca L |
859 | const char *dynamic_interpreter; |
860 | int dynamic_interpreter_size; | |
861 | ||
9f03412a AO |
862 | /* _TLS_MODULE_BASE_ symbol. */ |
863 | struct bfd_link_hash_entry *tls_module_base; | |
c25bc9fc L |
864 | |
865 | /* Used by local STT_GNU_IFUNC symbols. */ | |
866 | htab_t loc_hash_table; | |
4dfe6ac6 NC |
867 | void * loc_hash_memory; |
868 | ||
869 | /* The offset into splt of the PLT entry for the TLS descriptor | |
870 | resolver. Special values are 0, if not necessary (or not found | |
871 | to be necessary yet), and -1 if needed but not determined | |
872 | yet. */ | |
873 | bfd_vma tlsdesc_plt; | |
874 | /* The offset into sgot of the GOT entry used by the PLT entry | |
875 | above. */ | |
876 | bfd_vma tlsdesc_got; | |
e1f98742 L |
877 | |
878 | /* The index of the next R_X86_64_JUMP_SLOT entry in .rela.plt. */ | |
879 | bfd_vma next_jump_slot_index; | |
880 | /* The index of the next R_X86_64_IRELATIVE entry in .rela.plt. */ | |
881 | bfd_vma next_irelative_index; | |
c434dee6 | 882 | }; |
70256ad8 AJ |
883 | |
884 | /* Get the x86-64 ELF linker hash table from a link_info structure. */ | |
8d88c4ca | 885 | |
351f65ca | 886 | #define elf_x86_64_hash_table(p) \ |
4dfe6ac6 | 887 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
351f65ca | 888 | == X86_64_ELF_DATA ? ((struct elf_x86_64_link_hash_table *) ((p)->hash)) : NULL) |
8d88c4ca | 889 | |
351f65ca | 890 | #define elf_x86_64_compute_jump_table_size(htab) \ |
6de2ae4a | 891 | ((htab)->elf.srelplt->reloc_count * GOT_ENTRY_SIZE) |
67a4f2b7 | 892 | |
407443a3 | 893 | /* Create an entry in an x86-64 ELF linker hash table. */ |
70256ad8 AJ |
894 | |
895 | static struct bfd_hash_entry * | |
351f65ca L |
896 | elf_x86_64_link_hash_newfunc (struct bfd_hash_entry *entry, |
897 | struct bfd_hash_table *table, | |
898 | const char *string) | |
70256ad8 | 899 | { |
70256ad8 | 900 | /* Allocate the structure if it has not already been allocated by a |
c434dee6 AJ |
901 | subclass. */ |
902 | if (entry == NULL) | |
903 | { | |
a50b1753 | 904 | entry = (struct bfd_hash_entry *) |
eed180f8 RM |
905 | bfd_hash_allocate (table, |
906 | sizeof (struct elf_x86_64_link_hash_entry)); | |
c434dee6 AJ |
907 | if (entry == NULL) |
908 | return entry; | |
909 | } | |
70256ad8 AJ |
910 | |
911 | /* Call the allocation method of the superclass. */ | |
c434dee6 AJ |
912 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
913 | if (entry != NULL) | |
70256ad8 | 914 | { |
351f65ca | 915 | struct elf_x86_64_link_hash_entry *eh; |
c434dee6 | 916 | |
351f65ca | 917 | eh = (struct elf_x86_64_link_hash_entry *) entry; |
c434dee6 | 918 | eh->dyn_relocs = NULL; |
bffbf940 | 919 | eh->tls_type = GOT_UNKNOWN; |
bc696fd5 L |
920 | eh->needs_copy = 0; |
921 | eh->has_bnd_reloc = 0; | |
04ebc307 | 922 | eh->func_pointer_refcount = 0; |
0ff2b86e | 923 | eh->plt_bnd.offset = (bfd_vma) -1; |
dd7e64d4 | 924 | eh->plt_got.offset = (bfd_vma) -1; |
67a4f2b7 | 925 | eh->tlsdesc_got = (bfd_vma) -1; |
70256ad8 AJ |
926 | } |
927 | ||
c434dee6 | 928 | return entry; |
70256ad8 AJ |
929 | } |
930 | ||
c25bc9fc L |
931 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
932 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
933 | as global symbol. We reuse indx and dynstr_index for local symbol | |
934 | hash since they aren't used by global symbols in this backend. */ | |
935 | ||
936 | static hashval_t | |
351f65ca | 937 | elf_x86_64_local_htab_hash (const void *ptr) |
c25bc9fc L |
938 | { |
939 | struct elf_link_hash_entry *h | |
940 | = (struct elf_link_hash_entry *) ptr; | |
d2149d72 | 941 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); |
c25bc9fc L |
942 | } |
943 | ||
944 | /* Compare local hash entries. */ | |
945 | ||
946 | static int | |
351f65ca | 947 | elf_x86_64_local_htab_eq (const void *ptr1, const void *ptr2) |
c25bc9fc L |
948 | { |
949 | struct elf_link_hash_entry *h1 | |
950 | = (struct elf_link_hash_entry *) ptr1; | |
951 | struct elf_link_hash_entry *h2 | |
952 | = (struct elf_link_hash_entry *) ptr2; | |
953 | ||
954 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
955 | } | |
956 | ||
957 | /* Find and/or create a hash entry for local symbol. */ | |
958 | ||
959 | static struct elf_link_hash_entry * | |
351f65ca L |
960 | elf_x86_64_get_local_sym_hash (struct elf_x86_64_link_hash_table *htab, |
961 | bfd *abfd, const Elf_Internal_Rela *rel, | |
962 | bfd_boolean create) | |
c25bc9fc | 963 | { |
351f65ca | 964 | struct elf_x86_64_link_hash_entry e, *ret; |
c25bc9fc | 965 | asection *sec = abfd->sections; |
d2149d72 | 966 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, |
351f65ca | 967 | htab->r_sym (rel->r_info)); |
c25bc9fc L |
968 | void **slot; |
969 | ||
970 | e.elf.indx = sec->id; | |
351f65ca | 971 | e.elf.dynstr_index = htab->r_sym (rel->r_info); |
c25bc9fc L |
972 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, |
973 | create ? INSERT : NO_INSERT); | |
974 | ||
975 | if (!slot) | |
976 | return NULL; | |
977 | ||
978 | if (*slot) | |
979 | { | |
351f65ca | 980 | ret = (struct elf_x86_64_link_hash_entry *) *slot; |
c25bc9fc L |
981 | return &ret->elf; |
982 | } | |
983 | ||
351f65ca | 984 | ret = (struct elf_x86_64_link_hash_entry *) |
c25bc9fc | 985 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, |
351f65ca | 986 | sizeof (struct elf_x86_64_link_hash_entry)); |
c25bc9fc L |
987 | if (ret) |
988 | { | |
989 | memset (ret, 0, sizeof (*ret)); | |
990 | ret->elf.indx = sec->id; | |
351f65ca | 991 | ret->elf.dynstr_index = htab->r_sym (rel->r_info); |
c25bc9fc | 992 | ret->elf.dynindx = -1; |
04ebc307 | 993 | ret->func_pointer_refcount = 0; |
dd7e64d4 | 994 | ret->plt_got.offset = (bfd_vma) -1; |
c25bc9fc L |
995 | *slot = ret; |
996 | } | |
997 | return &ret->elf; | |
998 | } | |
999 | ||
68faa637 AM |
1000 | /* Destroy an X86-64 ELF linker hash table. */ |
1001 | ||
1002 | static void | |
d495ab0d | 1003 | elf_x86_64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
1004 | { |
1005 | struct elf_x86_64_link_hash_table *htab | |
d495ab0d | 1006 | = (struct elf_x86_64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
1007 | |
1008 | if (htab->loc_hash_table) | |
1009 | htab_delete (htab->loc_hash_table); | |
1010 | if (htab->loc_hash_memory) | |
1011 | objalloc_free ((struct objalloc *) htab->loc_hash_memory); | |
d495ab0d | 1012 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
1013 | } |
1014 | ||
8d88c4ca NC |
1015 | /* Create an X86-64 ELF linker hash table. */ |
1016 | ||
1017 | static struct bfd_link_hash_table * | |
351f65ca | 1018 | elf_x86_64_link_hash_table_create (bfd *abfd) |
8d88c4ca | 1019 | { |
351f65ca L |
1020 | struct elf_x86_64_link_hash_table *ret; |
1021 | bfd_size_type amt = sizeof (struct elf_x86_64_link_hash_table); | |
8d88c4ca | 1022 | |
7bf52ea2 | 1023 | ret = (struct elf_x86_64_link_hash_table *) bfd_zmalloc (amt); |
c434dee6 | 1024 | if (ret == NULL) |
8d88c4ca NC |
1025 | return NULL; |
1026 | ||
eb4ff4d6 | 1027 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
351f65ca L |
1028 | elf_x86_64_link_hash_newfunc, |
1029 | sizeof (struct elf_x86_64_link_hash_entry), | |
4dfe6ac6 | 1030 | X86_64_ELF_DATA)) |
8d88c4ca | 1031 | { |
e2d34d7d | 1032 | free (ret); |
8d88c4ca NC |
1033 | return NULL; |
1034 | } | |
1035 | ||
351f65ca L |
1036 | if (ABI_64_P (abfd)) |
1037 | { | |
1038 | ret->r_info = elf64_r_info; | |
1039 | ret->r_sym = elf64_r_sym; | |
248775ba | 1040 | ret->pointer_r_type = R_X86_64_64; |
351f65ca L |
1041 | ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; |
1042 | ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER; | |
1043 | } | |
1044 | else | |
1045 | { | |
1046 | ret->r_info = elf32_r_info; | |
1047 | ret->r_sym = elf32_r_sym; | |
248775ba | 1048 | ret->pointer_r_type = R_X86_64_32; |
351f65ca L |
1049 | ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; |
1050 | ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER; | |
1051 | } | |
1052 | ||
c25bc9fc | 1053 | ret->loc_hash_table = htab_try_create (1024, |
351f65ca L |
1054 | elf_x86_64_local_htab_hash, |
1055 | elf_x86_64_local_htab_eq, | |
c25bc9fc L |
1056 | NULL); |
1057 | ret->loc_hash_memory = objalloc_create (); | |
1058 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
1059 | { | |
d495ab0d | 1060 | elf_x86_64_link_hash_table_free (abfd); |
c25bc9fc L |
1061 | return NULL; |
1062 | } | |
d495ab0d | 1063 | ret->elf.root.hash_table_free = elf_x86_64_link_hash_table_free; |
c25bc9fc | 1064 | |
c434dee6 AJ |
1065 | return &ret->elf.root; |
1066 | } | |
1067 | ||
c434dee6 AJ |
1068 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and |
1069 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
1070 | hash table. */ | |
1071 | ||
b34976b6 | 1072 | static bfd_boolean |
351f65ca L |
1073 | elf_x86_64_create_dynamic_sections (bfd *dynobj, |
1074 | struct bfd_link_info *info) | |
c434dee6 | 1075 | { |
351f65ca | 1076 | struct elf_x86_64_link_hash_table *htab; |
c434dee6 | 1077 | |
c434dee6 | 1078 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 1079 | return FALSE; |
c434dee6 | 1080 | |
351f65ca | 1081 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
1082 | if (htab == NULL) |
1083 | return FALSE; | |
1084 | ||
3d4d4302 | 1085 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
9a926d55 | 1086 | if (!htab->sdynbss) |
c434dee6 AJ |
1087 | abort (); |
1088 | ||
0e1862bb | 1089 | if (bfd_link_executable (info)) |
9a926d55 L |
1090 | { |
1091 | /* Always allow copy relocs for building executables. */ | |
9d157cb9 | 1092 | asection *s = bfd_get_linker_section (dynobj, ".rela.bss"); |
9a926d55 L |
1093 | if (s == NULL) |
1094 | { | |
1095 | const struct elf_backend_data *bed = get_elf_backend_data (dynobj); | |
1096 | s = bfd_make_section_anyway_with_flags (dynobj, | |
1097 | ".rela.bss", | |
1098 | (bed->dynamic_sec_flags | |
1099 | | SEC_READONLY)); | |
1100 | if (s == NULL | |
1101 | || ! bfd_set_section_alignment (dynobj, s, | |
1102 | bed->s->log_file_align)) | |
1103 | return FALSE; | |
1104 | } | |
1105 | htab->srelbss = s; | |
1106 | } | |
1107 | ||
e41b3a13 | 1108 | if (!info->no_ld_generated_unwind_info |
2fe0fd06 | 1109 | && htab->plt_eh_frame == NULL |
e4de50d4 | 1110 | && htab->elf.splt != NULL) |
e41b3a13 | 1111 | { |
bbf96e4e L |
1112 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
1113 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
1114 | | SEC_LINKER_CREATED); | |
e41b3a13 | 1115 | htab->plt_eh_frame |
bbf96e4e | 1116 | = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags); |
e41b3a13 JJ |
1117 | if (htab->plt_eh_frame == NULL |
1118 | || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 3)) | |
1119 | return FALSE; | |
e41b3a13 | 1120 | } |
b34976b6 | 1121 | return TRUE; |
c434dee6 AJ |
1122 | } |
1123 | ||
1124 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
1125 | ||
1126 | static void | |
351f65ca L |
1127 | elf_x86_64_copy_indirect_symbol (struct bfd_link_info *info, |
1128 | struct elf_link_hash_entry *dir, | |
1129 | struct elf_link_hash_entry *ind) | |
c434dee6 | 1130 | { |
351f65ca | 1131 | struct elf_x86_64_link_hash_entry *edir, *eind; |
c434dee6 | 1132 | |
351f65ca L |
1133 | edir = (struct elf_x86_64_link_hash_entry *) dir; |
1134 | eind = (struct elf_x86_64_link_hash_entry *) ind; | |
c434dee6 | 1135 | |
0ff2b86e L |
1136 | if (!edir->has_bnd_reloc) |
1137 | edir->has_bnd_reloc = eind->has_bnd_reloc; | |
1138 | ||
c434dee6 AJ |
1139 | if (eind->dyn_relocs != NULL) |
1140 | { | |
1141 | if (edir->dyn_relocs != NULL) | |
1142 | { | |
e03a8ed8 L |
1143 | struct elf_dyn_relocs **pp; |
1144 | struct elf_dyn_relocs *p; | |
c434dee6 | 1145 | |
fcfa13d2 | 1146 | /* Add reloc counts against the indirect sym to the direct sym |
c434dee6 AJ |
1147 | list. Merge any entries against the same section. */ |
1148 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
1149 | { | |
e03a8ed8 | 1150 | struct elf_dyn_relocs *q; |
c434dee6 AJ |
1151 | |
1152 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
1153 | if (q->sec == p->sec) | |
1154 | { | |
1155 | q->pc_count += p->pc_count; | |
1156 | q->count += p->count; | |
1157 | *pp = p->next; | |
1158 | break; | |
1159 | } | |
1160 | if (q == NULL) | |
1161 | pp = &p->next; | |
1162 | } | |
1163 | *pp = edir->dyn_relocs; | |
1164 | } | |
1165 | ||
1166 | edir->dyn_relocs = eind->dyn_relocs; | |
1167 | eind->dyn_relocs = NULL; | |
1168 | } | |
1169 | ||
bffbf940 JJ |
1170 | if (ind->root.type == bfd_link_hash_indirect |
1171 | && dir->got.refcount <= 0) | |
1172 | { | |
1173 | edir->tls_type = eind->tls_type; | |
1174 | eind->tls_type = GOT_UNKNOWN; | |
1175 | } | |
1176 | ||
d40d037c AJ |
1177 | if (ELIMINATE_COPY_RELOCS |
1178 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
1179 | && dir->dynamic_adjusted) |
1180 | { | |
1181 | /* If called to transfer flags for a weakdef during processing | |
1182 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
1183 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
1184 | dir->ref_dynamic |= ind->ref_dynamic; | |
1185 | dir->ref_regular |= ind->ref_regular; | |
1186 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1187 | dir->needs_plt |= ind->needs_plt; | |
1188 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
1189 | } | |
d40d037c | 1190 | else |
04ebc307 L |
1191 | { |
1192 | if (eind->func_pointer_refcount > 0) | |
1193 | { | |
1194 | edir->func_pointer_refcount += eind->func_pointer_refcount; | |
1195 | eind->func_pointer_refcount = 0; | |
1196 | } | |
1197 | ||
1198 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
1199 | } | |
8d88c4ca NC |
1200 | } |
1201 | ||
b34976b6 | 1202 | static bfd_boolean |
27482721 | 1203 | elf64_x86_64_elf_object_p (bfd *abfd) |
bffbf940 | 1204 | { |
8d88c4ca NC |
1205 | /* Set the right machine number for an x86-64 elf64 file. */ |
1206 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); | |
b34976b6 | 1207 | return TRUE; |
8d88c4ca NC |
1208 | } |
1209 | ||
8059fb19 RM |
1210 | static bfd_boolean |
1211 | elf32_x86_64_elf_object_p (bfd *abfd) | |
1212 | { | |
1213 | /* Set the right machine number for an x86-64 elf32 file. */ | |
1214 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32); | |
1215 | return TRUE; | |
1216 | } | |
1217 | ||
142411ca L |
1218 | /* Return TRUE if the TLS access code sequence support transition |
1219 | from R_TYPE. */ | |
1220 | ||
1221 | static bfd_boolean | |
351f65ca L |
1222 | elf_x86_64_check_tls_transition (bfd *abfd, |
1223 | struct bfd_link_info *info, | |
1224 | asection *sec, | |
1225 | bfd_byte *contents, | |
1226 | Elf_Internal_Shdr *symtab_hdr, | |
1227 | struct elf_link_hash_entry **sym_hashes, | |
1228 | unsigned int r_type, | |
1229 | const Elf_Internal_Rela *rel, | |
1230 | const Elf_Internal_Rela *relend) | |
bffbf940 | 1231 | { |
142411ca L |
1232 | unsigned int val; |
1233 | unsigned long r_symndx; | |
5c98a14e | 1234 | bfd_boolean largepic = FALSE; |
142411ca L |
1235 | struct elf_link_hash_entry *h; |
1236 | bfd_vma offset; | |
351f65ca | 1237 | struct elf_x86_64_link_hash_table *htab; |
142411ca L |
1238 | |
1239 | /* Get the section contents. */ | |
1240 | if (contents == NULL) | |
1241 | { | |
1242 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1243 | contents = elf_section_data (sec)->this_hdr.contents; | |
1244 | else | |
1245 | { | |
1246 | /* FIXME: How to better handle error condition? */ | |
1247 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1248 | return FALSE; | |
bffbf940 | 1249 | |
142411ca L |
1250 | /* Cache the section contents for elf_link_input_bfd. */ |
1251 | elf_section_data (sec)->this_hdr.contents = contents; | |
1252 | } | |
1253 | } | |
1254 | ||
351f65ca | 1255 | htab = elf_x86_64_hash_table (info); |
142411ca | 1256 | offset = rel->r_offset; |
bffbf940 | 1257 | switch (r_type) |
142411ca L |
1258 | { |
1259 | case R_X86_64_TLSGD: | |
1260 | case R_X86_64_TLSLD: | |
1261 | if ((rel + 1) >= relend) | |
1262 | return FALSE; | |
1263 | ||
1264 | if (r_type == R_X86_64_TLSGD) | |
1265 | { | |
52bc799a | 1266 | /* Check transition from GD access model. For 64bit, only |
142411ca L |
1267 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
1268 | .word 0x6666; rex64; call __tls_get_addr | |
52bc799a L |
1269 | can transit to different access model. For 32bit, only |
1270 | leaq foo@tlsgd(%rip), %rdi | |
1271 | .word 0x6666; rex64; call __tls_get_addr | |
5c98a14e JJ |
1272 | can transit to different access model. For largepic |
1273 | we also support: | |
1274 | leaq foo@tlsgd(%rip), %rdi | |
1275 | movabsq $__tls_get_addr@pltoff, %rax | |
1276 | addq $rbx, %rax | |
1277 | call *%rax. */ | |
142411ca | 1278 | |
fa289a5f AM |
1279 | static const unsigned char call[] = { 0x66, 0x66, 0x48, 0xe8 }; |
1280 | static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d }; | |
1281 | ||
5c98a14e | 1282 | if ((offset + 12) > sec->size) |
142411ca | 1283 | return FALSE; |
52bc799a | 1284 | |
5c98a14e JJ |
1285 | if (memcmp (contents + offset + 4, call, 4) != 0) |
1286 | { | |
1287 | if (!ABI_64_P (abfd) | |
1288 | || (offset + 19) > sec->size | |
1289 | || offset < 3 | |
1290 | || memcmp (contents + offset - 3, leaq + 1, 3) != 0 | |
1291 | || memcmp (contents + offset + 4, "\x48\xb8", 2) != 0 | |
1292 | || memcmp (contents + offset + 14, "\x48\x01\xd8\xff\xd0", 5) | |
1293 | != 0) | |
1294 | return FALSE; | |
1295 | largepic = TRUE; | |
1296 | } | |
1297 | else if (ABI_64_P (abfd)) | |
52bc799a | 1298 | { |
52bc799a | 1299 | if (offset < 4 |
fa289a5f | 1300 | || memcmp (contents + offset - 4, leaq, 4) != 0) |
52bc799a L |
1301 | return FALSE; |
1302 | } | |
1303 | else | |
1304 | { | |
52bc799a | 1305 | if (offset < 3 |
fa289a5f | 1306 | || memcmp (contents + offset - 3, leaq + 1, 3) != 0) |
52bc799a L |
1307 | return FALSE; |
1308 | } | |
142411ca L |
1309 | } |
1310 | else | |
1311 | { | |
1312 | /* Check transition from LD access model. Only | |
1313 | leaq foo@tlsld(%rip), %rdi; | |
1314 | call __tls_get_addr | |
5c98a14e JJ |
1315 | can transit to different access model. For largepic |
1316 | we also support: | |
1317 | leaq foo@tlsld(%rip), %rdi | |
1318 | movabsq $__tls_get_addr@pltoff, %rax | |
1319 | addq $rbx, %rax | |
1320 | call *%rax. */ | |
142411ca | 1321 | |
fa289a5f | 1322 | static const unsigned char lea[] = { 0x48, 0x8d, 0x3d }; |
142411ca L |
1323 | |
1324 | if (offset < 3 || (offset + 9) > sec->size) | |
1325 | return FALSE; | |
1326 | ||
5c98a14e | 1327 | if (memcmp (contents + offset - 3, lea, 3) != 0) |
142411ca | 1328 | return FALSE; |
5c98a14e JJ |
1329 | |
1330 | if (0xe8 != *(contents + offset + 4)) | |
1331 | { | |
1332 | if (!ABI_64_P (abfd) | |
1333 | || (offset + 19) > sec->size | |
1334 | || memcmp (contents + offset + 4, "\x48\xb8", 2) != 0 | |
1335 | || memcmp (contents + offset + 14, "\x48\x01\xd8\xff\xd0", 5) | |
1336 | != 0) | |
1337 | return FALSE; | |
1338 | largepic = TRUE; | |
1339 | } | |
142411ca L |
1340 | } |
1341 | ||
351f65ca | 1342 | r_symndx = htab->r_sym (rel[1].r_info); |
142411ca L |
1343 | if (r_symndx < symtab_hdr->sh_info) |
1344 | return FALSE; | |
1345 | ||
1346 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
c4fb387b | 1347 | /* Use strncmp to check __tls_get_addr since __tls_get_addr |
eed180f8 | 1348 | may be versioned. */ |
142411ca L |
1349 | return (h != NULL |
1350 | && h->root.root.string != NULL | |
5c98a14e JJ |
1351 | && (largepic |
1352 | ? ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLTOFF64 | |
1353 | : (ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PC32 | |
1354 | || ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLT32)) | |
c4fb387b L |
1355 | && (strncmp (h->root.root.string, |
1356 | "__tls_get_addr", 14) == 0)); | |
142411ca L |
1357 | |
1358 | case R_X86_64_GOTTPOFF: | |
1359 | /* Check transition from IE access model: | |
4a4c5f25 L |
1360 | mov foo@gottpoff(%rip), %reg |
1361 | add foo@gottpoff(%rip), %reg | |
142411ca L |
1362 | */ |
1363 | ||
4a4c5f25 L |
1364 | /* Check REX prefix first. */ |
1365 | if (offset >= 3 && (offset + 4) <= sec->size) | |
1366 | { | |
1367 | val = bfd_get_8 (abfd, contents + offset - 3); | |
1368 | if (val != 0x48 && val != 0x4c) | |
1369 | { | |
1370 | /* X32 may have 0x44 REX prefix or no REX prefix. */ | |
1371 | if (ABI_64_P (abfd)) | |
1372 | return FALSE; | |
1373 | } | |
1374 | } | |
1375 | else | |
1376 | { | |
1377 | /* X32 may not have any REX prefix. */ | |
1378 | if (ABI_64_P (abfd)) | |
1379 | return FALSE; | |
1380 | if (offset < 2 || (offset + 3) > sec->size) | |
1381 | return FALSE; | |
1382 | } | |
142411ca L |
1383 | |
1384 | val = bfd_get_8 (abfd, contents + offset - 2); | |
1385 | if (val != 0x8b && val != 0x03) | |
1386 | return FALSE; | |
1387 | ||
1388 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1389 | return (val & 0xc7) == 5; | |
1390 | ||
1391 | case R_X86_64_GOTPC32_TLSDESC: | |
1392 | /* Check transition from GDesc access model: | |
1393 | leaq x@tlsdesc(%rip), %rax | |
1394 | ||
1395 | Make sure it's a leaq adding rip to a 32-bit offset | |
1396 | into any register, although it's probably almost always | |
1397 | going to be rax. */ | |
1398 | ||
1399 | if (offset < 3 || (offset + 4) > sec->size) | |
1400 | return FALSE; | |
1401 | ||
1402 | val = bfd_get_8 (abfd, contents + offset - 3); | |
1403 | if ((val & 0xfb) != 0x48) | |
1404 | return FALSE; | |
1405 | ||
1406 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1407 | return FALSE; | |
1408 | ||
1409 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1410 | return (val & 0xc7) == 0x05; | |
1411 | ||
1412 | case R_X86_64_TLSDESC_CALL: | |
1413 | /* Check transition from GDesc access model: | |
1414 | call *x@tlsdesc(%rax) | |
1415 | */ | |
1416 | if (offset + 2 <= sec->size) | |
1417 | { | |
1418 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
fa289a5f AM |
1419 | static const unsigned char call[] = { 0xff, 0x10 }; |
1420 | return memcmp (contents + offset, call, 2) == 0; | |
142411ca L |
1421 | } |
1422 | ||
1423 | return FALSE; | |
1424 | ||
1425 | default: | |
1426 | abort (); | |
1427 | } | |
1428 | } | |
1429 | ||
1430 | /* Return TRUE if the TLS access transition is OK or no transition | |
1431 | will be performed. Update R_TYPE if there is a transition. */ | |
1432 | ||
1433 | static bfd_boolean | |
351f65ca L |
1434 | elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd, |
1435 | asection *sec, bfd_byte *contents, | |
1436 | Elf_Internal_Shdr *symtab_hdr, | |
1437 | struct elf_link_hash_entry **sym_hashes, | |
1438 | unsigned int *r_type, int tls_type, | |
1439 | const Elf_Internal_Rela *rel, | |
1440 | const Elf_Internal_Rela *relend, | |
1441 | struct elf_link_hash_entry *h, | |
1442 | unsigned long r_symndx) | |
142411ca L |
1443 | { |
1444 | unsigned int from_type = *r_type; | |
1445 | unsigned int to_type = from_type; | |
1446 | bfd_boolean check = TRUE; | |
1447 | ||
bb1cb422 L |
1448 | /* Skip TLS transition for functions. */ |
1449 | if (h != NULL | |
1450 | && (h->type == STT_FUNC | |
1451 | || h->type == STT_GNU_IFUNC)) | |
1452 | return TRUE; | |
1453 | ||
142411ca | 1454 | switch (from_type) |
bffbf940 JJ |
1455 | { |
1456 | case R_X86_64_TLSGD: | |
67a4f2b7 AO |
1457 | case R_X86_64_GOTPC32_TLSDESC: |
1458 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 1459 | case R_X86_64_GOTTPOFF: |
0e1862bb | 1460 | if (bfd_link_executable (info)) |
142411ca L |
1461 | { |
1462 | if (h == NULL) | |
1463 | to_type = R_X86_64_TPOFF32; | |
1464 | else | |
1465 | to_type = R_X86_64_GOTTPOFF; | |
1466 | } | |
1467 | ||
351f65ca | 1468 | /* When we are called from elf_x86_64_relocate_section, |
142411ca L |
1469 | CONTENTS isn't NULL and there may be additional transitions |
1470 | based on TLS_TYPE. */ | |
1471 | if (contents != NULL) | |
1472 | { | |
1473 | unsigned int new_to_type = to_type; | |
1474 | ||
0e1862bb | 1475 | if (bfd_link_executable (info) |
142411ca L |
1476 | && h != NULL |
1477 | && h->dynindx == -1 | |
1478 | && tls_type == GOT_TLS_IE) | |
1479 | new_to_type = R_X86_64_TPOFF32; | |
1480 | ||
1481 | if (to_type == R_X86_64_TLSGD | |
1482 | || to_type == R_X86_64_GOTPC32_TLSDESC | |
1483 | || to_type == R_X86_64_TLSDESC_CALL) | |
1484 | { | |
1485 | if (tls_type == GOT_TLS_IE) | |
1486 | new_to_type = R_X86_64_GOTTPOFF; | |
1487 | } | |
1488 | ||
1489 | /* We checked the transition before when we were called from | |
351f65ca | 1490 | elf_x86_64_check_relocs. We only want to check the new |
142411ca L |
1491 | transition which hasn't been checked before. */ |
1492 | check = new_to_type != to_type && from_type == to_type; | |
1493 | to_type = new_to_type; | |
1494 | } | |
1495 | ||
1496 | break; | |
1497 | ||
bffbf940 | 1498 | case R_X86_64_TLSLD: |
0e1862bb | 1499 | if (bfd_link_executable (info)) |
142411ca L |
1500 | to_type = R_X86_64_TPOFF32; |
1501 | break; | |
1502 | ||
1503 | default: | |
1504 | return TRUE; | |
bffbf940 JJ |
1505 | } |
1506 | ||
142411ca L |
1507 | /* Return TRUE if there is no transition. */ |
1508 | if (from_type == to_type) | |
1509 | return TRUE; | |
1510 | ||
1511 | /* Check if the transition can be performed. */ | |
1512 | if (check | |
351f65ca L |
1513 | && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents, |
1514 | symtab_hdr, sym_hashes, | |
1515 | from_type, rel, relend)) | |
142411ca | 1516 | { |
2f629d23 | 1517 | reloc_howto_type *from, *to; |
4c544807 | 1518 | const char *name; |
142411ca | 1519 | |
351f65ca L |
1520 | from = elf_x86_64_rtype_to_howto (abfd, from_type); |
1521 | to = elf_x86_64_rtype_to_howto (abfd, to_type); | |
142411ca | 1522 | |
4c544807 L |
1523 | if (h) |
1524 | name = h->root.root.string; | |
1525 | else | |
1526 | { | |
351f65ca | 1527 | struct elf_x86_64_link_hash_table *htab; |
4dfe6ac6 | 1528 | |
351f65ca | 1529 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
1530 | if (htab == NULL) |
1531 | name = "*unknown*"; | |
1532 | else | |
1533 | { | |
1534 | Elf_Internal_Sym *isym; | |
1535 | ||
1536 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1537 | abfd, r_symndx); | |
1538 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1539 | } | |
4c544807 L |
1540 | } |
1541 | ||
142411ca L |
1542 | (*_bfd_error_handler) |
1543 | (_("%B: TLS transition from %s to %s against `%s' at 0x%lx " | |
1544 | "in section `%A' failed"), | |
4c544807 | 1545 | abfd, sec, from->name, to->name, name, |
142411ca L |
1546 | (unsigned long) rel->r_offset); |
1547 | bfd_set_error (bfd_error_bad_value); | |
1548 | return FALSE; | |
1549 | } | |
1550 | ||
1551 | *r_type = to_type; | |
1552 | return TRUE; | |
bffbf940 JJ |
1553 | } |
1554 | ||
c1d11331 L |
1555 | /* Rename some of the generic section flags to better document how they |
1556 | are used here. */ | |
56ceb5b5 | 1557 | #define need_convert_load sec_flg0 |
c1d11331 | 1558 | |
70256ad8 | 1559 | /* Look through the relocs for a section during the first phase, and |
c434dee6 AJ |
1560 | calculate needed space in the global offset table, procedure |
1561 | linkage table, and dynamic reloc sections. */ | |
70256ad8 | 1562 | |
b34976b6 | 1563 | static bfd_boolean |
351f65ca L |
1564 | elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1565 | asection *sec, | |
1566 | const Elf_Internal_Rela *relocs) | |
70256ad8 | 1567 | { |
351f65ca | 1568 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
1569 | Elf_Internal_Shdr *symtab_hdr; |
1570 | struct elf_link_hash_entry **sym_hashes; | |
70256ad8 AJ |
1571 | const Elf_Internal_Rela *rel; |
1572 | const Elf_Internal_Rela *rel_end; | |
70256ad8 | 1573 | asection *sreloc; |
dd7e64d4 | 1574 | bfd_boolean use_plt_got; |
70256ad8 | 1575 | |
0e1862bb | 1576 | if (bfd_link_relocatable (info)) |
b34976b6 | 1577 | return TRUE; |
70256ad8 | 1578 | |
0ffa91dd NC |
1579 | BFD_ASSERT (is_x86_64_elf (abfd)); |
1580 | ||
351f65ca | 1581 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
1582 | if (htab == NULL) |
1583 | return FALSE; | |
1584 | ||
dd7e64d4 L |
1585 | use_plt_got = get_elf_x86_64_backend_data (abfd) == &elf_x86_64_arch_bed; |
1586 | ||
0ffa91dd | 1587 | symtab_hdr = &elf_symtab_hdr (abfd); |
70256ad8 | 1588 | sym_hashes = elf_sym_hashes (abfd); |
70256ad8 | 1589 | |
c434dee6 | 1590 | sreloc = NULL; |
cbe950e9 | 1591 | |
70256ad8 AJ |
1592 | rel_end = relocs + sec->reloc_count; |
1593 | for (rel = relocs; rel < rel_end; rel++) | |
1594 | { | |
bffbf940 | 1595 | unsigned int r_type; |
70256ad8 AJ |
1596 | unsigned long r_symndx; |
1597 | struct elf_link_hash_entry *h; | |
4c544807 L |
1598 | Elf_Internal_Sym *isym; |
1599 | const char *name; | |
06a6a421 | 1600 | bfd_boolean size_reloc; |
70256ad8 | 1601 | |
351f65ca L |
1602 | r_symndx = htab->r_sym (rel->r_info); |
1603 | r_type = ELF32_R_TYPE (rel->r_info); | |
c434dee6 AJ |
1604 | |
1605 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
1606 | { | |
d003868e AM |
1607 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1608 | abfd, r_symndx); | |
b34976b6 | 1609 | return FALSE; |
c434dee6 AJ |
1610 | } |
1611 | ||
70256ad8 | 1612 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1613 | { |
1614 | /* A local symbol. */ | |
c2e61a4e L |
1615 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1616 | abfd, r_symndx); | |
1617 | if (isym == NULL) | |
1618 | return FALSE; | |
c25bc9fc L |
1619 | |
1620 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
351f65ca | 1621 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c25bc9fc | 1622 | { |
351f65ca L |
1623 | h = elf_x86_64_get_local_sym_hash (htab, abfd, rel, |
1624 | TRUE); | |
c25bc9fc | 1625 | if (h == NULL) |
c2e61a4e | 1626 | return FALSE; |
6bbec505 | 1627 | |
c25bc9fc L |
1628 | /* Fake a STT_GNU_IFUNC symbol. */ |
1629 | h->type = STT_GNU_IFUNC; | |
1630 | h->def_regular = 1; | |
1631 | h->ref_regular = 1; | |
1632 | h->forced_local = 1; | |
1633 | h->root.type = bfd_link_hash_defined; | |
1634 | } | |
1635 | else | |
1636 | h = NULL; | |
1637 | } | |
70256ad8 | 1638 | else |
71cb9464 | 1639 | { |
4c544807 | 1640 | isym = NULL; |
71cb9464 L |
1641 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1642 | while (h->root.type == bfd_link_hash_indirect | |
1643 | || h->root.type == bfd_link_hash_warning) | |
1644 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c25bc9fc | 1645 | } |
cbe950e9 | 1646 | |
d1534d16 L |
1647 | /* Check invalid x32 relocations. */ |
1648 | if (!ABI_64_P (abfd)) | |
1649 | switch (r_type) | |
1650 | { | |
1651 | default: | |
1652 | break; | |
1653 | ||
d1534d16 L |
1654 | case R_X86_64_DTPOFF64: |
1655 | case R_X86_64_TPOFF64: | |
1656 | case R_X86_64_PC64: | |
1657 | case R_X86_64_GOTOFF64: | |
1658 | case R_X86_64_GOT64: | |
1659 | case R_X86_64_GOTPCREL64: | |
1660 | case R_X86_64_GOTPC64: | |
1661 | case R_X86_64_GOTPLT64: | |
1662 | case R_X86_64_PLTOFF64: | |
1663 | { | |
1664 | if (h) | |
1665 | name = h->root.root.string; | |
1666 | else | |
1667 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1668 | NULL); | |
1669 | (*_bfd_error_handler) | |
1670 | (_("%B: relocation %s against symbol `%s' isn't " | |
1671 | "supported in x32 mode"), abfd, | |
1672 | x86_64_elf_howto_table[r_type].name, name); | |
1673 | bfd_set_error (bfd_error_bad_value); | |
1674 | return FALSE; | |
1675 | } | |
1676 | break; | |
1677 | } | |
1678 | ||
c25bc9fc L |
1679 | if (h != NULL) |
1680 | { | |
cbe950e9 L |
1681 | /* Create the ifunc sections for static executables. If we |
1682 | never see an indirect function symbol nor we are building | |
1683 | a static executable, those sections will be empty and | |
1684 | won't appear in output. */ | |
1685 | switch (r_type) | |
1686 | { | |
1687 | default: | |
1688 | break; | |
1689 | ||
0ff2b86e L |
1690 | case R_X86_64_PC32_BND: |
1691 | case R_X86_64_PLT32_BND: | |
d258b828 IZ |
1692 | case R_X86_64_PC32: |
1693 | case R_X86_64_PLT32: | |
1694 | case R_X86_64_32: | |
1695 | case R_X86_64_64: | |
0ff2b86e L |
1696 | /* MPX PLT is supported only if elf_x86_64_arch_bed |
1697 | is used in 64-bit mode. */ | |
1698 | if (ABI_64_P (abfd) | |
d258b828 IZ |
1699 | && info->bndplt |
1700 | && (get_elf_x86_64_backend_data (abfd) | |
1701 | == &elf_x86_64_arch_bed)) | |
0ff2b86e | 1702 | { |
bc696fd5 | 1703 | elf_x86_64_hash_entry (h)->has_bnd_reloc = 1; |
0ff2b86e L |
1704 | |
1705 | /* Create the second PLT for Intel MPX support. */ | |
1706 | if (htab->plt_bnd == NULL) | |
1707 | { | |
1708 | unsigned int plt_bnd_align; | |
1709 | const struct elf_backend_data *bed; | |
1710 | ||
1711 | bed = get_elf_backend_data (info->output_bfd); | |
6db50b4c L |
1712 | BFD_ASSERT (sizeof (elf_x86_64_bnd_plt2_entry) == 8 |
1713 | && (sizeof (elf_x86_64_bnd_plt2_entry) | |
1714 | == sizeof (elf_x86_64_legacy_plt2_entry))); | |
1715 | plt_bnd_align = 3; | |
0ff2b86e L |
1716 | |
1717 | if (htab->elf.dynobj == NULL) | |
1718 | htab->elf.dynobj = abfd; | |
1719 | htab->plt_bnd | |
1720 | = bfd_make_section_anyway_with_flags (htab->elf.dynobj, | |
1721 | ".plt.bnd", | |
1722 | (bed->dynamic_sec_flags | |
1723 | | SEC_ALLOC | |
1724 | | SEC_CODE | |
1725 | | SEC_LOAD | |
1726 | | SEC_READONLY)); | |
1727 | if (htab->plt_bnd == NULL | |
1728 | || !bfd_set_section_alignment (htab->elf.dynobj, | |
1729 | htab->plt_bnd, | |
1730 | plt_bnd_align)) | |
1731 | return FALSE; | |
1732 | } | |
1733 | } | |
1734 | ||
cbe950e9 | 1735 | case R_X86_64_32S: |
cbe950e9 | 1736 | case R_X86_64_PC64: |
cbe950e9 | 1737 | case R_X86_64_GOTPCREL: |
56ceb5b5 L |
1738 | case R_X86_64_GOTPCRELX: |
1739 | case R_X86_64_REX_GOTPCRELX: | |
cbe950e9 | 1740 | case R_X86_64_GOTPCREL64: |
9d4057ee AM |
1741 | if (htab->elf.dynobj == NULL) |
1742 | htab->elf.dynobj = abfd; | |
1743 | if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
c2e61a4e | 1744 | return FALSE; |
cbe950e9 L |
1745 | break; |
1746 | } | |
1747 | ||
ad1e85de L |
1748 | /* It is referenced by a non-shared object. */ |
1749 | h->ref_regular = 1; | |
61315175 | 1750 | h->root.non_ir_ref = 1; |
13a2df29 L |
1751 | |
1752 | if (h->type == STT_GNU_IFUNC) | |
1753 | elf_tdata (info->output_bfd)->has_gnu_symbols | |
1754 | |= elf_gnu_symbol_ifunc; | |
71cb9464 | 1755 | } |
70256ad8 | 1756 | |
351f65ca L |
1757 | if (! elf_x86_64_tls_transition (info, abfd, sec, NULL, |
1758 | symtab_hdr, sym_hashes, | |
1759 | &r_type, GOT_UNKNOWN, | |
1760 | rel, rel_end, h, r_symndx)) | |
c2e61a4e | 1761 | return FALSE; |
142411ca | 1762 | |
bffbf940 | 1763 | switch (r_type) |
70256ad8 | 1764 | { |
bffbf940 JJ |
1765 | case R_X86_64_TLSLD: |
1766 | htab->tls_ld_got.refcount += 1; | |
1767 | goto create_got; | |
1768 | ||
1769 | case R_X86_64_TPOFF32: | |
0e1862bb | 1770 | if (!bfd_link_executable (info) && ABI_64_P (abfd)) |
70256ad8 | 1771 | { |
09a24cbf | 1772 | if (h) |
4c544807 L |
1773 | name = h->root.root.string; |
1774 | else | |
1775 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1776 | NULL); | |
bffbf940 | 1777 | (*_bfd_error_handler) |
d003868e AM |
1778 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
1779 | abfd, | |
4c544807 | 1780 | x86_64_elf_howto_table[r_type].name, name); |
bffbf940 | 1781 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1782 | return FALSE; |
70256ad8 | 1783 | } |
bffbf940 | 1784 | break; |
c434dee6 | 1785 | |
bffbf940 | 1786 | case R_X86_64_GOTTPOFF: |
0e1862bb | 1787 | if (!bfd_link_executable (info)) |
bffbf940 JJ |
1788 | info->flags |= DF_STATIC_TLS; |
1789 | /* Fall through */ | |
70256ad8 | 1790 | |
bffbf940 JJ |
1791 | case R_X86_64_GOT32: |
1792 | case R_X86_64_GOTPCREL: | |
56ceb5b5 L |
1793 | case R_X86_64_GOTPCRELX: |
1794 | case R_X86_64_REX_GOTPCRELX: | |
bffbf940 | 1795 | case R_X86_64_TLSGD: |
7b81dfbb AJ |
1796 | case R_X86_64_GOT64: |
1797 | case R_X86_64_GOTPCREL64: | |
1798 | case R_X86_64_GOTPLT64: | |
67a4f2b7 AO |
1799 | case R_X86_64_GOTPC32_TLSDESC: |
1800 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 JJ |
1801 | /* This symbol requires a global offset table entry. */ |
1802 | { | |
1803 | int tls_type, old_tls_type; | |
1804 | ||
1805 | switch (r_type) | |
1806 | { | |
1807 | default: tls_type = GOT_NORMAL; break; | |
1808 | case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break; | |
1809 | case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break; | |
67a4f2b7 AO |
1810 | case R_X86_64_GOTPC32_TLSDESC: |
1811 | case R_X86_64_TLSDESC_CALL: | |
1812 | tls_type = GOT_TLS_GDESC; break; | |
bffbf940 JJ |
1813 | } |
1814 | ||
1815 | if (h != NULL) | |
1816 | { | |
1817 | h->got.refcount += 1; | |
351f65ca | 1818 | old_tls_type = elf_x86_64_hash_entry (h)->tls_type; |
bffbf940 JJ |
1819 | } |
1820 | else | |
1821 | { | |
1822 | bfd_signed_vma *local_got_refcounts; | |
1823 | ||
1824 | /* This is a global offset table entry for a local symbol. */ | |
1825 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1826 | if (local_got_refcounts == NULL) | |
1827 | { | |
1828 | bfd_size_type size; | |
1829 | ||
1830 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1831 | size *= sizeof (bfd_signed_vma) |
1832 | + sizeof (bfd_vma) + sizeof (char); | |
bffbf940 JJ |
1833 | local_got_refcounts = ((bfd_signed_vma *) |
1834 | bfd_zalloc (abfd, size)); | |
1835 | if (local_got_refcounts == NULL) | |
c2e61a4e | 1836 | return FALSE; |
bffbf940 | 1837 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
351f65ca | 1838 | elf_x86_64_local_tlsdesc_gotent (abfd) |
67a4f2b7 | 1839 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); |
351f65ca | 1840 | elf_x86_64_local_got_tls_type (abfd) |
67a4f2b7 | 1841 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
bffbf940 JJ |
1842 | } |
1843 | local_got_refcounts[r_symndx] += 1; | |
1844 | old_tls_type | |
351f65ca | 1845 | = elf_x86_64_local_got_tls_type (abfd) [r_symndx]; |
bffbf940 JJ |
1846 | } |
1847 | ||
1848 | /* If a TLS symbol is accessed using IE at least once, | |
1849 | there is no point to use dynamic model for it. */ | |
1850 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN | |
67a4f2b7 AO |
1851 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
1852 | || tls_type != GOT_TLS_IE)) | |
bffbf940 | 1853 | { |
67a4f2b7 | 1854 | if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type)) |
bffbf940 | 1855 | tls_type = old_tls_type; |
67a4f2b7 AO |
1856 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1857 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1858 | tls_type |= old_tls_type; | |
bffbf940 JJ |
1859 | else |
1860 | { | |
09a24cbf | 1861 | if (h) |
4c544807 L |
1862 | name = h->root.root.string; |
1863 | else | |
1864 | name = bfd_elf_sym_name (abfd, symtab_hdr, | |
1865 | isym, NULL); | |
bffbf940 | 1866 | (*_bfd_error_handler) |
1f7a4e42 | 1867 | (_("%B: '%s' accessed both as normal and thread local symbol"), |
4c544807 | 1868 | abfd, name); |
68c4a57e | 1869 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1870 | return FALSE; |
bffbf940 JJ |
1871 | } |
1872 | } | |
1873 | ||
1874 | if (old_tls_type != tls_type) | |
1875 | { | |
1876 | if (h != NULL) | |
351f65ca | 1877 | elf_x86_64_hash_entry (h)->tls_type = tls_type; |
bffbf940 | 1878 | else |
351f65ca | 1879 | elf_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type; |
bffbf940 JJ |
1880 | } |
1881 | } | |
c434dee6 AJ |
1882 | /* Fall through */ |
1883 | ||
d6ab8113 JB |
1884 | case R_X86_64_GOTOFF64: |
1885 | case R_X86_64_GOTPC32: | |
7b81dfbb | 1886 | case R_X86_64_GOTPC64: |
bffbf940 | 1887 | create_got: |
6de2ae4a | 1888 | if (htab->elf.sgot == NULL) |
c434dee6 AJ |
1889 | { |
1890 | if (htab->elf.dynobj == NULL) | |
1891 | htab->elf.dynobj = abfd; | |
6de2ae4a L |
1892 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, |
1893 | info)) | |
c2e61a4e | 1894 | return FALSE; |
c434dee6 | 1895 | } |
70256ad8 AJ |
1896 | break; |
1897 | ||
1898 | case R_X86_64_PLT32: | |
c3320543 | 1899 | case R_X86_64_PLT32_BND: |
70256ad8 | 1900 | /* This symbol requires a procedure linkage table entry. We |
407443a3 AJ |
1901 | actually build the entry in adjust_dynamic_symbol, |
1902 | because this might be a case of linking PIC code which is | |
1903 | never referenced by a dynamic object, in which case we | |
1904 | don't need to generate a procedure linkage table entry | |
1905 | after all. */ | |
70256ad8 AJ |
1906 | |
1907 | /* If this is a local symbol, we resolve it directly without | |
407443a3 | 1908 | creating a procedure linkage table entry. */ |
70256ad8 AJ |
1909 | if (h == NULL) |
1910 | continue; | |
1911 | ||
f5385ebf | 1912 | h->needs_plt = 1; |
51b64d56 | 1913 | h->plt.refcount += 1; |
70256ad8 AJ |
1914 | break; |
1915 | ||
7b81dfbb AJ |
1916 | case R_X86_64_PLTOFF64: |
1917 | /* This tries to form the 'address' of a function relative | |
1918 | to GOT. For global symbols we need a PLT entry. */ | |
1919 | if (h != NULL) | |
1920 | { | |
1921 | h->needs_plt = 1; | |
1922 | h->plt.refcount += 1; | |
1923 | } | |
1924 | goto create_got; | |
1925 | ||
6a3e1bae L |
1926 | case R_X86_64_SIZE32: |
1927 | case R_X86_64_SIZE64: | |
06a6a421 | 1928 | size_reloc = TRUE; |
6a3e1bae L |
1929 | goto do_size; |
1930 | ||
248775ba L |
1931 | case R_X86_64_32: |
1932 | if (!ABI_64_P (abfd)) | |
1933 | goto pointer; | |
cc78d0af AJ |
1934 | case R_X86_64_8: |
1935 | case R_X86_64_16: | |
70256ad8 | 1936 | case R_X86_64_32S: |
1b71fb54 AJ |
1937 | /* Let's help debug shared library creation. These relocs |
1938 | cannot be used in shared libs. Don't error out for | |
1939 | sections we don't care about, such as debug sections or | |
1940 | non-constant sections. */ | |
0e1862bb | 1941 | if (bfd_link_pic (info) |
1b71fb54 AJ |
1942 | && (sec->flags & SEC_ALLOC) != 0 |
1943 | && (sec->flags & SEC_READONLY) != 0) | |
1944 | { | |
09a24cbf | 1945 | if (h) |
4c544807 L |
1946 | name = h->root.root.string; |
1947 | else | |
1948 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1b71fb54 | 1949 | (*_bfd_error_handler) |
d003868e | 1950 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
4c544807 | 1951 | abfd, x86_64_elf_howto_table[r_type].name, name); |
1b71fb54 | 1952 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1953 | return FALSE; |
1b71fb54 AJ |
1954 | } |
1955 | /* Fall through. */ | |
1956 | ||
c434dee6 AJ |
1957 | case R_X86_64_PC8: |
1958 | case R_X86_64_PC16: | |
70256ad8 | 1959 | case R_X86_64_PC32: |
c3320543 | 1960 | case R_X86_64_PC32_BND: |
d6ab8113 | 1961 | case R_X86_64_PC64: |
1b71fb54 | 1962 | case R_X86_64_64: |
248775ba | 1963 | pointer: |
0e1862bb | 1964 | if (h != NULL && bfd_link_executable (info)) |
c434dee6 AJ |
1965 | { |
1966 | /* If this reloc is in a read-only section, we might | |
1967 | need a copy reloc. We can't check reliably at this | |
1968 | stage whether the section is read-only, as input | |
1969 | sections have not yet been mapped to output sections. | |
1970 | Tentatively set the flag for now, and correct in | |
1971 | adjust_dynamic_symbol. */ | |
f5385ebf | 1972 | h->non_got_ref = 1; |
c434dee6 AJ |
1973 | |
1974 | /* We may need a .plt entry if the function this reloc | |
1975 | refers to is in a shared lib. */ | |
1976 | h->plt.refcount += 1; | |
5db4f0d3 L |
1977 | if (r_type == R_X86_64_PC32) |
1978 | { | |
1979 | /* Since something like ".long foo - ." may be used | |
1980 | as pointer, make sure that PLT is used if foo is | |
1981 | a function defined in a shared library. */ | |
1982 | if ((sec->flags & SEC_CODE) == 0) | |
1983 | h->pointer_equality_needed = 1; | |
1984 | } | |
1985 | else if (r_type != R_X86_64_PC32_BND | |
1986 | && r_type != R_X86_64_PC64) | |
04ebc307 L |
1987 | { |
1988 | h->pointer_equality_needed = 1; | |
1989 | /* At run-time, R_X86_64_64 can be resolved for both | |
1990 | x86-64 and x32. But R_X86_64_32 and R_X86_64_32S | |
1991 | can only be resolved for x32. */ | |
1992 | if ((sec->flags & SEC_READONLY) == 0 | |
1993 | && (r_type == R_X86_64_64 | |
1994 | || (!ABI_64_P (abfd) | |
1995 | && (r_type == R_X86_64_32 | |
1996 | || r_type == R_X86_64_32S)))) | |
1997 | { | |
1998 | struct elf_x86_64_link_hash_entry *eh | |
1999 | = (struct elf_x86_64_link_hash_entry *) h; | |
2000 | eh->func_pointer_refcount += 1; | |
2001 | } | |
2002 | } | |
c434dee6 | 2003 | } |
70256ad8 | 2004 | |
06a6a421 | 2005 | size_reloc = FALSE; |
6a3e1bae | 2006 | do_size: |
70256ad8 AJ |
2007 | /* If we are creating a shared library, and this is a reloc |
2008 | against a global symbol, or a non PC relative reloc | |
2009 | against a local symbol, then we need to copy the reloc | |
2010 | into the shared library. However, if we are linking with | |
2011 | -Bsymbolic, we do not need to copy a reloc against a | |
2012 | global symbol which is defined in an object we are | |
407443a3 | 2013 | including in the link (i.e., DEF_REGULAR is set). At |
70256ad8 AJ |
2014 | this point we have not seen all the input files, so it is |
2015 | possible that DEF_REGULAR is not set now but will be set | |
c434dee6 AJ |
2016 | later (it is never cleared). In case of a weak definition, |
2017 | DEF_REGULAR may be cleared later by a strong definition in | |
2018 | a shared library. We account for that possibility below by | |
2019 | storing information in the relocs_copied field of the hash | |
2020 | table entry. A similar situation occurs when creating | |
2021 | shared libraries and symbol visibility changes render the | |
31c0ebfe | 2022 | symbol local. |
c434dee6 AJ |
2023 | |
2024 | If on the other hand, we are creating an executable, we | |
2025 | may need to keep relocations for symbols satisfied by a | |
2026 | dynamic library if we manage to avoid copy relocs for the | |
0f88be7a | 2027 | symbol. */ |
0e1862bb | 2028 | if ((bfd_link_pic (info) |
c434dee6 | 2029 | && (sec->flags & SEC_ALLOC) != 0 |
d8045f23 | 2030 | && (! IS_X86_64_PCREL_TYPE (r_type) |
c434dee6 | 2031 | || (h != NULL |
55255dae | 2032 | && (! SYMBOLIC_BIND (info, h) |
c434dee6 | 2033 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 2034 | || !h->def_regular)))) |
d40d037c | 2035 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 2036 | && !bfd_link_pic (info) |
c434dee6 AJ |
2037 | && (sec->flags & SEC_ALLOC) != 0 |
2038 | && h != NULL | |
2039 | && (h->root.type == bfd_link_hash_defweak | |
0f88be7a | 2040 | || !h->def_regular))) |
70256ad8 | 2041 | { |
e03a8ed8 L |
2042 | struct elf_dyn_relocs *p; |
2043 | struct elf_dyn_relocs **head; | |
c434dee6 AJ |
2044 | |
2045 | /* We must copy these reloc types into the output file. | |
2046 | Create a reloc section in dynobj and make room for | |
2047 | this reloc. */ | |
70256ad8 AJ |
2048 | if (sreloc == NULL) |
2049 | { | |
c434dee6 AJ |
2050 | if (htab->elf.dynobj == NULL) |
2051 | htab->elf.dynobj = abfd; | |
2052 | ||
83bac4b0 | 2053 | sreloc = _bfd_elf_make_dynamic_reloc_section |
82e96e07 L |
2054 | (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2, |
2055 | abfd, /*rela?*/ TRUE); | |
70256ad8 | 2056 | |
70256ad8 | 2057 | if (sreloc == NULL) |
c2e61a4e | 2058 | return FALSE; |
70256ad8 AJ |
2059 | } |
2060 | ||
c434dee6 AJ |
2061 | /* If this is a global symbol, we count the number of |
2062 | relocations we need for this symbol. */ | |
2063 | if (h != NULL) | |
70256ad8 | 2064 | { |
351f65ca | 2065 | head = &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs; |
c434dee6 AJ |
2066 | } |
2067 | else | |
2068 | { | |
2069 | /* Track dynamic relocs needed for local syms too. | |
2070 | We really need local syms available to do this | |
2071 | easily. Oh well. */ | |
c434dee6 | 2072 | asection *s; |
87d72d41 | 2073 | void **vpp; |
87d72d41 AM |
2074 | |
2075 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
2076 | abfd, r_symndx); | |
2077 | if (isym == NULL) | |
2078 | return FALSE; | |
2079 | ||
2080 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
c434dee6 | 2081 | if (s == NULL) |
87d72d41 | 2082 | s = sec; |
70256ad8 | 2083 | |
e81d3500 DD |
2084 | /* Beware of type punned pointers vs strict aliasing |
2085 | rules. */ | |
2086 | vpp = &(elf_section_data (s)->local_dynrel); | |
e03a8ed8 | 2087 | head = (struct elf_dyn_relocs **)vpp; |
c434dee6 | 2088 | } |
70256ad8 | 2089 | |
c434dee6 AJ |
2090 | p = *head; |
2091 | if (p == NULL || p->sec != sec) | |
2092 | { | |
2093 | bfd_size_type amt = sizeof *p; | |
d8045f23 | 2094 | |
e03a8ed8 | 2095 | p = ((struct elf_dyn_relocs *) |
c434dee6 | 2096 | bfd_alloc (htab->elf.dynobj, amt)); |
70256ad8 | 2097 | if (p == NULL) |
c2e61a4e | 2098 | return FALSE; |
c434dee6 AJ |
2099 | p->next = *head; |
2100 | *head = p; | |
2101 | p->sec = sec; | |
2102 | p->count = 0; | |
2103 | p->pc_count = 0; | |
70256ad8 | 2104 | } |
c434dee6 AJ |
2105 | |
2106 | p->count += 1; | |
06a6a421 L |
2107 | /* Count size relocation as PC-relative relocation. */ |
2108 | if (IS_X86_64_PCREL_TYPE (r_type) || size_reloc) | |
c434dee6 | 2109 | p->pc_count += 1; |
70256ad8 AJ |
2110 | } |
2111 | break; | |
fe4770f4 AJ |
2112 | |
2113 | /* This relocation describes the C++ object vtable hierarchy. | |
2114 | Reconstruct it for later use during GC. */ | |
2115 | case R_X86_64_GNU_VTINHERIT: | |
c152c796 | 2116 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
c2e61a4e | 2117 | return FALSE; |
fe4770f4 AJ |
2118 | break; |
2119 | ||
2120 | /* This relocation describes which C++ vtable entries are actually | |
2121 | used. Record for later use during GC. */ | |
2122 | case R_X86_64_GNU_VTENTRY: | |
d17e0c6e JB |
2123 | BFD_ASSERT (h != NULL); |
2124 | if (h != NULL | |
2125 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
c2e61a4e | 2126 | return FALSE; |
fe4770f4 | 2127 | break; |
c434dee6 AJ |
2128 | |
2129 | default: | |
2130 | break; | |
70256ad8 | 2131 | } |
dd7e64d4 L |
2132 | |
2133 | if (use_plt_got | |
2134 | && h != NULL | |
2135 | && h->plt.refcount > 0 | |
8ded2ddc L |
2136 | && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed) |
2137 | || h->got.refcount > 0) | |
dd7e64d4 L |
2138 | && htab->plt_got == NULL) |
2139 | { | |
2140 | /* Create the GOT procedure linkage table. */ | |
2141 | unsigned int plt_got_align; | |
2142 | const struct elf_backend_data *bed; | |
2143 | ||
2144 | bed = get_elf_backend_data (info->output_bfd); | |
2145 | BFD_ASSERT (sizeof (elf_x86_64_legacy_plt2_entry) == 8 | |
2146 | && (sizeof (elf_x86_64_bnd_plt2_entry) | |
2147 | == sizeof (elf_x86_64_legacy_plt2_entry))); | |
2148 | plt_got_align = 3; | |
2149 | ||
2150 | if (htab->elf.dynobj == NULL) | |
2151 | htab->elf.dynobj = abfd; | |
2152 | htab->plt_got | |
2153 | = bfd_make_section_anyway_with_flags (htab->elf.dynobj, | |
2154 | ".plt.got", | |
2155 | (bed->dynamic_sec_flags | |
2156 | | SEC_ALLOC | |
2157 | | SEC_CODE | |
2158 | | SEC_LOAD | |
2159 | | SEC_READONLY)); | |
2160 | if (htab->plt_got == NULL | |
2161 | || !bfd_set_section_alignment (htab->elf.dynobj, | |
2162 | htab->plt_got, | |
2163 | plt_got_align)) | |
2164 | return FALSE; | |
2165 | } | |
c1d11331 | 2166 | |
56ceb5b5 L |
2167 | if ((r_type == R_X86_64_GOTPCREL |
2168 | || r_type == R_X86_64_GOTPCRELX | |
2169 | || r_type == R_X86_64_REX_GOTPCRELX) | |
c1d11331 | 2170 | && (h == NULL || h->type != STT_GNU_IFUNC)) |
56ceb5b5 | 2171 | sec->need_convert_load = 1; |
70256ad8 AJ |
2172 | } |
2173 | ||
b34976b6 | 2174 | return TRUE; |
70256ad8 AJ |
2175 | } |
2176 | ||
2177 | /* Return the section that should be marked against GC for a given | |
407443a3 | 2178 | relocation. */ |
70256ad8 AJ |
2179 | |
2180 | static asection * | |
351f65ca L |
2181 | elf_x86_64_gc_mark_hook (asection *sec, |
2182 | struct bfd_link_info *info, | |
2183 | Elf_Internal_Rela *rel, | |
2184 | struct elf_link_hash_entry *h, | |
2185 | Elf_Internal_Sym *sym) | |
70256ad8 AJ |
2186 | { |
2187 | if (h != NULL) | |
351f65ca | 2188 | switch (ELF32_R_TYPE (rel->r_info)) |
07adf181 AM |
2189 | { |
2190 | case R_X86_64_GNU_VTINHERIT: | |
2191 | case R_X86_64_GNU_VTENTRY: | |
2192 | return NULL; | |
2193 | } | |
2194 | ||
2195 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
70256ad8 AJ |
2196 | } |
2197 | ||
407443a3 | 2198 | /* Update the got entry reference counts for the section being removed. */ |
70256ad8 | 2199 | |
b34976b6 | 2200 | static bfd_boolean |
351f65ca L |
2201 | elf_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
2202 | asection *sec, | |
2203 | const Elf_Internal_Rela *relocs) | |
70256ad8 | 2204 | { |
351f65ca | 2205 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
2206 | Elf_Internal_Shdr *symtab_hdr; |
2207 | struct elf_link_hash_entry **sym_hashes; | |
2208 | bfd_signed_vma *local_got_refcounts; | |
2209 | const Elf_Internal_Rela *rel, *relend; | |
c434dee6 | 2210 | |
0e1862bb | 2211 | if (bfd_link_relocatable (info)) |
7dda2462 TG |
2212 | return TRUE; |
2213 | ||
351f65ca | 2214 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2215 | if (htab == NULL) |
2216 | return FALSE; | |
2217 | ||
c434dee6 | 2218 | elf_section_data (sec)->local_dynrel = NULL; |
70256ad8 | 2219 | |
0ffa91dd | 2220 | symtab_hdr = &elf_symtab_hdr (abfd); |
70256ad8 AJ |
2221 | sym_hashes = elf_sym_hashes (abfd); |
2222 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
2223 | ||
351f65ca | 2224 | htab = elf_x86_64_hash_table (info); |
70256ad8 AJ |
2225 | relend = relocs + sec->reloc_count; |
2226 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
2227 | { |
2228 | unsigned long r_symndx; | |
2229 | unsigned int r_type; | |
2230 | struct elf_link_hash_entry *h = NULL; | |
04ebc307 | 2231 | bfd_boolean pointer_reloc; |
70256ad8 | 2232 | |
351f65ca | 2233 | r_symndx = htab->r_sym (rel->r_info); |
26e41594 AM |
2234 | if (r_symndx >= symtab_hdr->sh_info) |
2235 | { | |
26e41594 | 2236 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
2237 | while (h->root.type == bfd_link_hash_indirect |
2238 | || h->root.type == bfd_link_hash_warning) | |
2239 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 2240 | } |
bb1cb422 L |
2241 | else |
2242 | { | |
2243 | /* A local symbol. */ | |
2244 | Elf_Internal_Sym *isym; | |
2245 | ||
2246 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
2247 | abfd, r_symndx); | |
2248 | ||
2249 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
2250 | if (isym != NULL | |
82e96e07 | 2251 | && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
bb1cb422 | 2252 | { |
351f65ca | 2253 | h = elf_x86_64_get_local_sym_hash (htab, abfd, rel, FALSE); |
bb1cb422 L |
2254 | if (h == NULL) |
2255 | abort (); | |
2256 | } | |
2257 | } | |
c434dee6 | 2258 | |
3db2e7dd L |
2259 | if (h) |
2260 | { | |
2261 | struct elf_x86_64_link_hash_entry *eh; | |
2262 | struct elf_dyn_relocs **pp; | |
2263 | struct elf_dyn_relocs *p; | |
2264 | ||
2265 | eh = (struct elf_x86_64_link_hash_entry *) h; | |
2266 | ||
2267 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
2268 | if (p->sec == sec) | |
2269 | { | |
2270 | /* Everything must go for SEC. */ | |
2271 | *pp = p->next; | |
2272 | break; | |
2273 | } | |
2274 | } | |
2275 | ||
351f65ca L |
2276 | r_type = ELF32_R_TYPE (rel->r_info); |
2277 | if (! elf_x86_64_tls_transition (info, abfd, sec, NULL, | |
2278 | symtab_hdr, sym_hashes, | |
2279 | &r_type, GOT_UNKNOWN, | |
2280 | rel, relend, h, r_symndx)) | |
142411ca L |
2281 | return FALSE; |
2282 | ||
04ebc307 | 2283 | pointer_reloc = FALSE; |
26e41594 AM |
2284 | switch (r_type) |
2285 | { | |
2286 | case R_X86_64_TLSLD: | |
4dfe6ac6 NC |
2287 | if (htab->tls_ld_got.refcount > 0) |
2288 | htab->tls_ld_got.refcount -= 1; | |
26e41594 | 2289 | break; |
c434dee6 | 2290 | |
26e41594 | 2291 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
2292 | case R_X86_64_GOTPC32_TLSDESC: |
2293 | case R_X86_64_TLSDESC_CALL: | |
26e41594 AM |
2294 | case R_X86_64_GOTTPOFF: |
2295 | case R_X86_64_GOT32: | |
2296 | case R_X86_64_GOTPCREL: | |
56ceb5b5 L |
2297 | case R_X86_64_GOTPCRELX: |
2298 | case R_X86_64_REX_GOTPCRELX: | |
7b81dfbb AJ |
2299 | case R_X86_64_GOT64: |
2300 | case R_X86_64_GOTPCREL64: | |
2301 | case R_X86_64_GOTPLT64: | |
26e41594 AM |
2302 | if (h != NULL) |
2303 | { | |
2304 | if (h->got.refcount > 0) | |
2305 | h->got.refcount -= 1; | |
bb1cb422 L |
2306 | if (h->type == STT_GNU_IFUNC) |
2307 | { | |
2308 | if (h->plt.refcount > 0) | |
2309 | h->plt.refcount -= 1; | |
2310 | } | |
26e41594 AM |
2311 | } |
2312 | else if (local_got_refcounts != NULL) | |
2313 | { | |
2314 | if (local_got_refcounts[r_symndx] > 0) | |
2315 | local_got_refcounts[r_symndx] -= 1; | |
2316 | } | |
2317 | break; | |
c434dee6 | 2318 | |
26e41594 | 2319 | case R_X86_64_32: |
26e41594 | 2320 | case R_X86_64_32S: |
04ebc307 L |
2321 | pointer_reloc = !ABI_64_P (abfd); |
2322 | goto pointer; | |
2323 | ||
2324 | case R_X86_64_64: | |
2325 | pointer_reloc = TRUE; | |
2326 | case R_X86_64_8: | |
2327 | case R_X86_64_16: | |
26e41594 AM |
2328 | case R_X86_64_PC8: |
2329 | case R_X86_64_PC16: | |
2330 | case R_X86_64_PC32: | |
c3320543 | 2331 | case R_X86_64_PC32_BND: |
d6ab8113 | 2332 | case R_X86_64_PC64: |
1788fc08 L |
2333 | case R_X86_64_SIZE32: |
2334 | case R_X86_64_SIZE64: | |
04ebc307 | 2335 | pointer: |
0e1862bb | 2336 | if (bfd_link_pic (info) |
3db2e7dd | 2337 | && (h == NULL || h->type != STT_GNU_IFUNC)) |
26e41594 AM |
2338 | break; |
2339 | /* Fall thru */ | |
c434dee6 | 2340 | |
26e41594 | 2341 | case R_X86_64_PLT32: |
c3320543 | 2342 | case R_X86_64_PLT32_BND: |
7b81dfbb | 2343 | case R_X86_64_PLTOFF64: |
26e41594 AM |
2344 | if (h != NULL) |
2345 | { | |
2346 | if (h->plt.refcount > 0) | |
2347 | h->plt.refcount -= 1; | |
04ebc307 L |
2348 | if (pointer_reloc && (sec->flags & SEC_READONLY) == 0) |
2349 | { | |
2350 | struct elf_x86_64_link_hash_entry *eh | |
2351 | = (struct elf_x86_64_link_hash_entry *) h; | |
2352 | if (eh->func_pointer_refcount > 0) | |
2353 | eh->func_pointer_refcount -= 1; | |
2354 | } | |
26e41594 AM |
2355 | } |
2356 | break; | |
70256ad8 | 2357 | |
26e41594 AM |
2358 | default: |
2359 | break; | |
2360 | } | |
2361 | } | |
70256ad8 | 2362 | |
b34976b6 | 2363 | return TRUE; |
70256ad8 AJ |
2364 | } |
2365 | ||
2366 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2367 | regular object. The current definition is in some section of the | |
2368 | dynamic object, but we're not including those sections. We have to | |
2369 | change the definition to something the rest of the link can | |
407443a3 | 2370 | understand. */ |
70256ad8 | 2371 | |
b34976b6 | 2372 | static bfd_boolean |
351f65ca L |
2373 | elf_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info, |
2374 | struct elf_link_hash_entry *h) | |
70256ad8 | 2375 | { |
351f65ca | 2376 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 | 2377 | asection *s; |
5ca5bb35 L |
2378 | struct elf_x86_64_link_hash_entry *eh; |
2379 | struct elf_dyn_relocs *p; | |
70256ad8 | 2380 | |
cbe950e9 L |
2381 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
2382 | if (h->type == STT_GNU_IFUNC) | |
2383 | { | |
73bcf233 L |
2384 | /* All local STT_GNU_IFUNC references must be treate as local |
2385 | calls via local PLT. */ | |
5ca5bb35 L |
2386 | if (h->ref_regular |
2387 | && SYMBOL_CALLS_LOCAL (info, h)) | |
2388 | { | |
73bcf233 | 2389 | bfd_size_type pc_count = 0, count = 0; |
5ca5bb35 L |
2390 | struct elf_dyn_relocs **pp; |
2391 | ||
2392 | eh = (struct elf_x86_64_link_hash_entry *) h; | |
2393 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2394 | { | |
2395 | pc_count += p->pc_count; | |
2396 | p->count -= p->pc_count; | |
2397 | p->pc_count = 0; | |
73bcf233 | 2398 | count += p->count; |
5ca5bb35 L |
2399 | if (p->count == 0) |
2400 | *pp = p->next; | |
2401 | else | |
2402 | pp = &p->next; | |
2403 | } | |
2404 | ||
73bcf233 | 2405 | if (pc_count || count) |
5ca5bb35 L |
2406 | { |
2407 | h->needs_plt = 1; | |
5ca5bb35 | 2408 | h->non_got_ref = 1; |
a5479e5f L |
2409 | if (h->plt.refcount <= 0) |
2410 | h->plt.refcount = 1; | |
2411 | else | |
2412 | h->plt.refcount += 1; | |
5ca5bb35 L |
2413 | } |
2414 | } | |
2415 | ||
cbe950e9 L |
2416 | if (h->plt.refcount <= 0) |
2417 | { | |
2418 | h->plt.offset = (bfd_vma) -1; | |
2419 | h->needs_plt = 0; | |
2420 | } | |
2421 | return TRUE; | |
2422 | } | |
2423 | ||
70256ad8 AJ |
2424 | /* If this is a function, put it in the procedure linkage table. We |
2425 | will fill in the contents of the procedure linkage table later, | |
2426 | when we know the address of the .got section. */ | |
2427 | if (h->type == STT_FUNC | |
f5385ebf | 2428 | || h->needs_plt) |
70256ad8 | 2429 | { |
c434dee6 | 2430 | if (h->plt.refcount <= 0 |
27482721 AJ |
2431 | || SYMBOL_CALLS_LOCAL (info, h) |
2432 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
2433 | && h->root.type == bfd_link_hash_undefweak)) | |
70256ad8 | 2434 | { |
70256ad8 AJ |
2435 | /* This case can occur if we saw a PLT32 reloc in an input |
2436 | file, but the symbol was never referred to by a dynamic | |
2437 | object, or if all references were garbage collected. In | |
2438 | such a case, we don't actually need to build a procedure | |
2439 | linkage table, and we can just do a PC32 reloc instead. */ | |
70256ad8 | 2440 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2441 | h->needs_plt = 0; |
70256ad8 AJ |
2442 | } |
2443 | ||
b34976b6 | 2444 | return TRUE; |
70256ad8 | 2445 | } |
bbd7ec4a | 2446 | else |
c434dee6 AJ |
2447 | /* It's possible that we incorrectly decided a .plt reloc was |
2448 | needed for an R_X86_64_PC32 reloc to a non-function sym in | |
2449 | check_relocs. We can't decide accurately between function and | |
2450 | non-function syms in check-relocs; Objects loaded later in | |
2451 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 2452 | h->plt.offset = (bfd_vma) -1; |
70256ad8 AJ |
2453 | |
2454 | /* If this is a weak symbol, and there is a real definition, the | |
2455 | processor independent code will have arranged for us to see the | |
407443a3 | 2456 | real definition first, and we can just use the same value. */ |
f6e332e6 | 2457 | if (h->u.weakdef != NULL) |
70256ad8 | 2458 | { |
f6e332e6 AM |
2459 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2460 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2461 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2462 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
d40d037c | 2463 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
bc696fd5 L |
2464 | { |
2465 | eh = (struct elf_x86_64_link_hash_entry *) h; | |
2466 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
2467 | eh->needs_copy = h->u.weakdef->needs_copy; | |
2468 | } | |
b34976b6 | 2469 | return TRUE; |
70256ad8 AJ |
2470 | } |
2471 | ||
2472 | /* This is a reference to a symbol defined by a dynamic object which | |
407443a3 | 2473 | is not a function. */ |
70256ad8 AJ |
2474 | |
2475 | /* If we are creating a shared library, we must presume that the | |
2476 | only references to the symbol are via the global offset table. | |
2477 | For such cases we need not do anything here; the relocations will | |
407443a3 | 2478 | be handled correctly by relocate_section. */ |
0e1862bb | 2479 | if (!bfd_link_executable (info)) |
b34976b6 | 2480 | return TRUE; |
70256ad8 AJ |
2481 | |
2482 | /* If there are no references to this symbol that do not use the | |
2483 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 2484 | if (!h->non_got_ref) |
b34976b6 | 2485 | return TRUE; |
70256ad8 | 2486 | |
c434dee6 AJ |
2487 | /* If -z nocopyreloc was given, we won't generate them either. */ |
2488 | if (info->nocopyreloc) | |
2489 | { | |
f5385ebf | 2490 | h->non_got_ref = 0; |
b34976b6 | 2491 | return TRUE; |
c434dee6 AJ |
2492 | } |
2493 | ||
31c0ebfe | 2494 | if (ELIMINATE_COPY_RELOCS) |
c434dee6 | 2495 | { |
351f65ca | 2496 | eh = (struct elf_x86_64_link_hash_entry *) h; |
d40d037c AJ |
2497 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
2498 | { | |
2499 | s = p->sec->output_section; | |
2500 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2501 | break; | |
2502 | } | |
2503 | ||
2504 | /* If we didn't find any dynamic relocs in read-only sections, then | |
2505 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
2506 | if (p == NULL) | |
2507 | { | |
f5385ebf | 2508 | h->non_got_ref = 0; |
d40d037c AJ |
2509 | return TRUE; |
2510 | } | |
c434dee6 AJ |
2511 | } |
2512 | ||
70256ad8 | 2513 | /* We must allocate the symbol in our .dynbss section, which will |
407443a3 | 2514 | become part of the .bss section of the executable. There will be |
70256ad8 AJ |
2515 | an entry for this symbol in the .dynsym section. The dynamic |
2516 | object will contain position independent code, so all references | |
2517 | from the dynamic object to this symbol will go through the global | |
2518 | offset table. The dynamic linker will use the .dynsym entry to | |
2519 | determine the address it must put in the global offset table, so | |
2520 | both the dynamic object and the regular object will refer to the | |
2521 | same memory location for the variable. */ | |
2522 | ||
351f65ca | 2523 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2524 | if (htab == NULL) |
2525 | return FALSE; | |
70256ad8 AJ |
2526 | |
2527 | /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker | |
2528 | to copy the initial value out of the dynamic object and into the | |
cedb70c5 | 2529 | runtime process image. */ |
1d7e9d18 | 2530 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
70256ad8 | 2531 | { |
351f65ca L |
2532 | const struct elf_backend_data *bed; |
2533 | bed = get_elf_backend_data (info->output_bfd); | |
2534 | htab->srelbss->size += bed->s->sizeof_rela; | |
f5385ebf | 2535 | h->needs_copy = 1; |
70256ad8 AJ |
2536 | } |
2537 | ||
c434dee6 | 2538 | s = htab->sdynbss; |
70256ad8 | 2539 | |
6cabe1ea | 2540 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
70256ad8 AJ |
2541 | } |
2542 | ||
c434dee6 AJ |
2543 | /* Allocate space in .plt, .got and associated reloc sections for |
2544 | dynamic relocs. */ | |
2545 | ||
b34976b6 | 2546 | static bfd_boolean |
351f65ca | 2547 | elf_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
c434dee6 AJ |
2548 | { |
2549 | struct bfd_link_info *info; | |
351f65ca L |
2550 | struct elf_x86_64_link_hash_table *htab; |
2551 | struct elf_x86_64_link_hash_entry *eh; | |
e03a8ed8 | 2552 | struct elf_dyn_relocs *p; |
351f65ca | 2553 | const struct elf_backend_data *bed; |
eed180f8 | 2554 | unsigned int plt_entry_size; |
c434dee6 | 2555 | |
e92d460e | 2556 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 2557 | return TRUE; |
c434dee6 | 2558 | |
351f65ca | 2559 | eh = (struct elf_x86_64_link_hash_entry *) h; |
e92d460e | 2560 | |
c434dee6 | 2561 | info = (struct bfd_link_info *) inf; |
351f65ca | 2562 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
2563 | if (htab == NULL) |
2564 | return FALSE; | |
351f65ca | 2565 | bed = get_elf_backend_data (info->output_bfd); |
eed180f8 | 2566 | plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd); |
c434dee6 | 2567 | |
dd7e64d4 L |
2568 | /* We can't use the GOT PLT if pointer equality is needed since |
2569 | finish_dynamic_symbol won't clear symbol value and the dynamic | |
2570 | linker won't update the GOT slot. We will get into an infinite | |
2571 | loop at run-time. */ | |
2572 | if (htab->plt_got != NULL | |
2573 | && h->type != STT_GNU_IFUNC | |
2574 | && !h->pointer_equality_needed | |
2575 | && h->plt.refcount > 0 | |
2576 | && h->got.refcount > 0) | |
2577 | { | |
2578 | /* Don't use the regular PLT if there are both GOT and GOTPLT | |
2579 | reloctions. */ | |
2580 | h->plt.offset = (bfd_vma) -1; | |
2581 | ||
2582 | /* Use the GOT PLT. */ | |
2583 | eh->plt_got.refcount = 1; | |
2584 | } | |
2585 | ||
04ebc307 L |
2586 | /* Clear the reference count of function pointer relocations if |
2587 | symbol isn't a normal function. */ | |
2588 | if (h->type != STT_FUNC) | |
2589 | eh->func_pointer_refcount = 0; | |
2590 | ||
cbe950e9 L |
2591 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
2592 | here if it is defined and referenced in a non-shared object. */ | |
2593 | if (h->type == STT_GNU_IFUNC | |
2594 | && h->def_regular) | |
0ff2b86e L |
2595 | { |
2596 | if (_bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
2597 | &eh->dyn_relocs, | |
2598 | plt_entry_size, | |
2599 | plt_entry_size, | |
2600 | GOT_ENTRY_SIZE)) | |
2601 | { | |
2602 | asection *s = htab->plt_bnd; | |
2603 | if (h->plt.offset != (bfd_vma) -1 && s != NULL) | |
2604 | { | |
2605 | /* Use the .plt.bnd section if it is created. */ | |
2606 | eh->plt_bnd.offset = s->size; | |
2607 | ||
2608 | /* Make room for this entry in the .plt.bnd section. */ | |
2609 | s->size += sizeof (elf_x86_64_legacy_plt2_entry); | |
2610 | } | |
2611 | ||
2612 | return TRUE; | |
2613 | } | |
2614 | else | |
2615 | return FALSE; | |
2616 | } | |
04ebc307 L |
2617 | /* Don't create the PLT entry if there are only function pointer |
2618 | relocations which can be resolved at run-time. */ | |
cbe950e9 | 2619 | else if (htab->elf.dynamic_sections_created |
04ebc307 L |
2620 | && (h->plt.refcount > eh->func_pointer_refcount |
2621 | || eh->plt_got.refcount > 0)) | |
c434dee6 | 2622 | { |
25070364 L |
2623 | bfd_boolean use_plt_got; |
2624 | ||
04ebc307 L |
2625 | /* Clear the reference count of function pointer relocations |
2626 | if PLT is used. */ | |
2627 | eh->func_pointer_refcount = 0; | |
2628 | ||
8ded2ddc | 2629 | if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed) |
25070364 L |
2630 | { |
2631 | /* Don't use the regular PLT for DF_BIND_NOW. */ | |
2632 | h->plt.offset = (bfd_vma) -1; | |
2633 | ||
2634 | /* Use the GOT PLT. */ | |
2635 | h->got.refcount = 1; | |
2636 | eh->plt_got.refcount = 1; | |
2637 | } | |
2638 | ||
2639 | use_plt_got = eh->plt_got.refcount > 0; | |
dd7e64d4 | 2640 | |
c434dee6 AJ |
2641 | /* Make sure this symbol is output as a dynamic symbol. |
2642 | Undefined weak syms won't yet be marked as dynamic. */ | |
2643 | if (h->dynindx == -1 | |
f5385ebf | 2644 | && !h->forced_local) |
c434dee6 | 2645 | { |
c152c796 | 2646 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2647 | return FALSE; |
c434dee6 AJ |
2648 | } |
2649 | ||
0e1862bb | 2650 | if (bfd_link_pic (info) |
27482721 | 2651 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
c434dee6 | 2652 | { |
6de2ae4a | 2653 | asection *s = htab->elf.splt; |
0ff2b86e | 2654 | asection *bnd_s = htab->plt_bnd; |
dd7e64d4 | 2655 | asection *got_s = htab->plt_got; |
c434dee6 | 2656 | |
7c1e8d3e L |
2657 | /* If this is the first .plt entry, make room for the special |
2658 | first entry. The .plt section is used by prelink to undo | |
2659 | prelinking for dynamic relocations. */ | |
2660 | if (s->size == 0) | |
2661 | s->size = plt_entry_size; | |
2662 | ||
dd7e64d4 L |
2663 | if (use_plt_got) |
2664 | eh->plt_got.offset = got_s->size; | |
2665 | else | |
2666 | { | |
2667 | h->plt.offset = s->size; | |
2668 | if (bnd_s) | |
2669 | eh->plt_bnd.offset = bnd_s->size; | |
2670 | } | |
c434dee6 AJ |
2671 | |
2672 | /* If this symbol is not defined in a regular file, and we are | |
2673 | not generating a shared library, then set the symbol to this | |
2674 | location in the .plt. This is required to make function | |
2675 | pointers compare as equal between the normal executable and | |
2676 | the shared library. */ | |
0e1862bb | 2677 | if (! bfd_link_pic (info) |
f5385ebf | 2678 | && !h->def_regular) |
c434dee6 | 2679 | { |
dd7e64d4 | 2680 | if (use_plt_got) |
0ff2b86e | 2681 | { |
dd7e64d4 L |
2682 | /* We need to make a call to the entry of the GOT PLT |
2683 | instead of regular PLT entry. */ | |
2684 | h->root.u.def.section = got_s; | |
2685 | h->root.u.def.value = eh->plt_got.offset; | |
0ff2b86e L |
2686 | } |
2687 | else | |
2688 | { | |
dd7e64d4 L |
2689 | if (bnd_s) |
2690 | { | |
2691 | /* We need to make a call to the entry of the second | |
2692 | PLT instead of regular PLT entry. */ | |
2693 | h->root.u.def.section = bnd_s; | |
2694 | h->root.u.def.value = eh->plt_bnd.offset; | |
2695 | } | |
2696 | else | |
2697 | { | |
2698 | h->root.u.def.section = s; | |
2699 | h->root.u.def.value = h->plt.offset; | |
2700 | } | |
0ff2b86e | 2701 | } |
c434dee6 AJ |
2702 | } |
2703 | ||
2704 | /* Make room for this entry. */ | |
dd7e64d4 L |
2705 | if (use_plt_got) |
2706 | got_s->size += sizeof (elf_x86_64_legacy_plt2_entry); | |
2707 | else | |
2708 | { | |
2709 | s->size += plt_entry_size; | |
2710 | if (bnd_s) | |
2711 | bnd_s->size += sizeof (elf_x86_64_legacy_plt2_entry); | |
c434dee6 | 2712 | |
dd7e64d4 L |
2713 | /* We also need to make an entry in the .got.plt section, |
2714 | which will be placed in the .got section by the linker | |
2715 | script. */ | |
2716 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; | |
c434dee6 | 2717 | |
dd7e64d4 L |
2718 | /* We also need to make an entry in the .rela.plt |
2719 | section. */ | |
2720 | htab->elf.srelplt->size += bed->s->sizeof_rela; | |
2721 | htab->elf.srelplt->reloc_count++; | |
2722 | } | |
c434dee6 AJ |
2723 | } |
2724 | else | |
2725 | { | |
2726 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 2727 | h->needs_plt = 0; |
c434dee6 AJ |
2728 | } |
2729 | } | |
2730 | else | |
2731 | { | |
2732 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 2733 | h->needs_plt = 0; |
c434dee6 AJ |
2734 | } |
2735 | ||
67a4f2b7 AO |
2736 | eh->tlsdesc_got = (bfd_vma) -1; |
2737 | ||
bffbf940 JJ |
2738 | /* If R_X86_64_GOTTPOFF symbol is now local to the binary, |
2739 | make it a R_X86_64_TPOFF32 requiring no GOT entry. */ | |
2740 | if (h->got.refcount > 0 | |
0e1862bb | 2741 | && bfd_link_executable (info) |
bffbf940 | 2742 | && h->dynindx == -1 |
351f65ca | 2743 | && elf_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE) |
d8045f23 NC |
2744 | { |
2745 | h->got.offset = (bfd_vma) -1; | |
2746 | } | |
bffbf940 | 2747 | else if (h->got.refcount > 0) |
c434dee6 AJ |
2748 | { |
2749 | asection *s; | |
b34976b6 | 2750 | bfd_boolean dyn; |
351f65ca | 2751 | int tls_type = elf_x86_64_hash_entry (h)->tls_type; |
c434dee6 AJ |
2752 | |
2753 | /* Make sure this symbol is output as a dynamic symbol. | |
2754 | Undefined weak syms won't yet be marked as dynamic. */ | |
2755 | if (h->dynindx == -1 | |
f5385ebf | 2756 | && !h->forced_local) |
c434dee6 | 2757 | { |
c152c796 | 2758 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2759 | return FALSE; |
c434dee6 AJ |
2760 | } |
2761 | ||
67a4f2b7 AO |
2762 | if (GOT_TLS_GDESC_P (tls_type)) |
2763 | { | |
6de2ae4a | 2764 | eh->tlsdesc_got = htab->elf.sgotplt->size |
351f65ca | 2765 | - elf_x86_64_compute_jump_table_size (htab); |
6de2ae4a | 2766 | htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE; |
67a4f2b7 AO |
2767 | h->got.offset = (bfd_vma) -2; |
2768 | } | |
2769 | if (! GOT_TLS_GDESC_P (tls_type) | |
2770 | || GOT_TLS_GD_P (tls_type)) | |
2771 | { | |
6de2ae4a | 2772 | s = htab->elf.sgot; |
67a4f2b7 AO |
2773 | h->got.offset = s->size; |
2774 | s->size += GOT_ENTRY_SIZE; | |
2775 | if (GOT_TLS_GD_P (tls_type)) | |
2776 | s->size += GOT_ENTRY_SIZE; | |
2777 | } | |
c434dee6 | 2778 | dyn = htab->elf.dynamic_sections_created; |
bffbf940 JJ |
2779 | /* R_X86_64_TLSGD needs one dynamic relocation if local symbol |
2780 | and two if global. | |
2781 | R_X86_64_GOTTPOFF needs one dynamic relocation. */ | |
67a4f2b7 | 2782 | if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
bffbf940 | 2783 | || tls_type == GOT_TLS_IE) |
351f65ca | 2784 | htab->elf.srelgot->size += bed->s->sizeof_rela; |
67a4f2b7 | 2785 | else if (GOT_TLS_GD_P (tls_type)) |
351f65ca | 2786 | htab->elf.srelgot->size += 2 * bed->s->sizeof_rela; |
67a4f2b7 AO |
2787 | else if (! GOT_TLS_GDESC_P (tls_type) |
2788 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2789 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 2790 | && (bfd_link_pic (info) |
27482721 | 2791 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
351f65ca | 2792 | htab->elf.srelgot->size += bed->s->sizeof_rela; |
67a4f2b7 AO |
2793 | if (GOT_TLS_GDESC_P (tls_type)) |
2794 | { | |
351f65ca | 2795 | htab->elf.srelplt->size += bed->s->sizeof_rela; |
67a4f2b7 AO |
2796 | htab->tlsdesc_plt = (bfd_vma) -1; |
2797 | } | |
c434dee6 AJ |
2798 | } |
2799 | else | |
2800 | h->got.offset = (bfd_vma) -1; | |
2801 | ||
c434dee6 | 2802 | if (eh->dyn_relocs == NULL) |
b34976b6 | 2803 | return TRUE; |
c434dee6 AJ |
2804 | |
2805 | /* In the shared -Bsymbolic case, discard space allocated for | |
2806 | dynamic pc-relative relocs against symbols which turn out to be | |
2807 | defined in regular objects. For the normal shared case, discard | |
2808 | space for pc-relative relocs that have become local due to symbol | |
2809 | visibility changes. */ | |
2810 | ||
0e1862bb | 2811 | if (bfd_link_pic (info)) |
c434dee6 | 2812 | { |
27482721 AJ |
2813 | /* Relocs that use pc_count are those that appear on a call |
2814 | insn, or certain REL relocs that can generated via assembly. | |
2815 | We want calls to protected symbols to resolve directly to the | |
2816 | function rather than going via the plt. If people want | |
2817 | function pointer comparisons to work as expected then they | |
2818 | should avoid writing weird assembly. */ | |
2819 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
c434dee6 | 2820 | { |
e03a8ed8 | 2821 | struct elf_dyn_relocs **pp; |
c434dee6 AJ |
2822 | |
2823 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2824 | { | |
c3ce498c L |
2825 | p->count -= p->pc_count; |
2826 | p->pc_count = 0; | |
c434dee6 AJ |
2827 | if (p->count == 0) |
2828 | *pp = p->next; | |
2829 | else | |
2830 | pp = &p->next; | |
2831 | } | |
2832 | } | |
4e795f50 AM |
2833 | |
2834 | /* Also discard relocs on undefined weak syms with non-default | |
c353e543 | 2835 | visibility. */ |
31c0ebfe | 2836 | if (eh->dyn_relocs != NULL) |
22d606e9 | 2837 | { |
31c0ebfe L |
2838 | if (h->root.type == bfd_link_hash_undefweak) |
2839 | { | |
2840 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2841 | eh->dyn_relocs = NULL; | |
2842 | ||
2843 | /* Make sure undefined weak symbols are output as a dynamic | |
2844 | symbol in PIEs. */ | |
2845 | else if (h->dynindx == -1 | |
2846 | && ! h->forced_local | |
2847 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2848 | return FALSE; | |
2849 | } | |
9d1d54d5 L |
2850 | /* For PIE, discard space for pc-relative relocs against |
2851 | symbols which turn out to need copy relocs. */ | |
0e1862bb | 2852 | else if (bfd_link_executable (info) |
bc696fd5 | 2853 | && (h->needs_copy || eh->needs_copy) |
31c0ebfe L |
2854 | && h->def_dynamic |
2855 | && !h->def_regular) | |
9d1d54d5 L |
2856 | { |
2857 | struct elf_dyn_relocs **pp; | |
2858 | ||
2859 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2860 | { | |
2861 | if (p->pc_count != 0) | |
2862 | *pp = p->next; | |
2863 | else | |
2864 | pp = &p->next; | |
2865 | } | |
2866 | } | |
22d606e9 | 2867 | } |
d8045f23 | 2868 | } |
d40d037c | 2869 | else if (ELIMINATE_COPY_RELOCS) |
c434dee6 AJ |
2870 | { |
2871 | /* For the non-shared case, discard space for relocs against | |
2872 | symbols which turn out to need copy relocs or are not | |
04ebc307 L |
2873 | dynamic. Keep dynamic relocations for run-time function |
2874 | pointer initialization. */ | |
c434dee6 | 2875 | |
04ebc307 | 2876 | if ((!h->non_got_ref || eh->func_pointer_refcount > 0) |
f5385ebf AM |
2877 | && ((h->def_dynamic |
2878 | && !h->def_regular) | |
c434dee6 AJ |
2879 | || (htab->elf.dynamic_sections_created |
2880 | && (h->root.type == bfd_link_hash_undefweak | |
2881 | || h->root.type == bfd_link_hash_undefined)))) | |
2882 | { | |
2883 | /* Make sure this symbol is output as a dynamic symbol. | |
2884 | Undefined weak syms won't yet be marked as dynamic. */ | |
2885 | if (h->dynindx == -1 | |
d8045f23 NC |
2886 | && ! h->forced_local |
2887 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2888 | return FALSE; | |
c434dee6 AJ |
2889 | |
2890 | /* If that succeeded, we know we'll be keeping all the | |
2891 | relocs. */ | |
2892 | if (h->dynindx != -1) | |
2893 | goto keep; | |
2894 | } | |
2895 | ||
2896 | eh->dyn_relocs = NULL; | |
04ebc307 | 2897 | eh->func_pointer_refcount = 0; |
c434dee6 AJ |
2898 | |
2899 | keep: ; | |
2900 | } | |
2901 | ||
2902 | /* Finally, allocate space. */ | |
2903 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2904 | { | |
e7c33416 NC |
2905 | asection * sreloc; |
2906 | ||
cbe950e9 | 2907 | sreloc = elf_section_data (p->sec)->sreloc; |
e7c33416 NC |
2908 | |
2909 | BFD_ASSERT (sreloc != NULL); | |
2910 | ||
351f65ca | 2911 | sreloc->size += p->count * bed->s->sizeof_rela; |
c434dee6 AJ |
2912 | } |
2913 | ||
b34976b6 | 2914 | return TRUE; |
c434dee6 AJ |
2915 | } |
2916 | ||
c25bc9fc L |
2917 | /* Allocate space in .plt, .got and associated reloc sections for |
2918 | local dynamic relocs. */ | |
2919 | ||
2920 | static bfd_boolean | |
351f65ca | 2921 | elf_x86_64_allocate_local_dynrelocs (void **slot, void *inf) |
c25bc9fc L |
2922 | { |
2923 | struct elf_link_hash_entry *h | |
2924 | = (struct elf_link_hash_entry *) *slot; | |
2925 | ||
2926 | if (h->type != STT_GNU_IFUNC | |
2927 | || !h->def_regular | |
2928 | || !h->ref_regular | |
2929 | || !h->forced_local | |
2930 | || h->root.type != bfd_link_hash_defined) | |
2931 | abort (); | |
2932 | ||
351f65ca | 2933 | return elf_x86_64_allocate_dynrelocs (h, inf); |
c25bc9fc L |
2934 | } |
2935 | ||
c434dee6 AJ |
2936 | /* Find any dynamic relocs that apply to read-only sections. */ |
2937 | ||
b34976b6 | 2938 | static bfd_boolean |
351f65ca L |
2939 | elf_x86_64_readonly_dynrelocs (struct elf_link_hash_entry *h, |
2940 | void * inf) | |
c434dee6 | 2941 | { |
351f65ca | 2942 | struct elf_x86_64_link_hash_entry *eh; |
e03a8ed8 | 2943 | struct elf_dyn_relocs *p; |
c434dee6 | 2944 | |
aa715242 L |
2945 | /* Skip local IFUNC symbols. */ |
2946 | if (h->forced_local && h->type == STT_GNU_IFUNC) | |
2947 | return TRUE; | |
2948 | ||
351f65ca | 2949 | eh = (struct elf_x86_64_link_hash_entry *) h; |
c434dee6 AJ |
2950 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
2951 | { | |
2952 | asection *s = p->sec->output_section; | |
2953 | ||
2954 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2955 | { | |
2956 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2957 | ||
2958 | info->flags |= DF_TEXTREL; | |
2959 | ||
0e1862bb | 2960 | if ((info->warn_shared_textrel && bfd_link_pic (info)) |
1952c5cd L |
2961 | || info->error_textrel) |
2962 | info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"), | |
b70321a2 L |
2963 | p->sec->owner, h->root.root.string, |
2964 | p->sec); | |
2965 | ||
c434dee6 | 2966 | /* Not an error, just cut short the traversal. */ |
b34976b6 | 2967 | return FALSE; |
c434dee6 AJ |
2968 | } |
2969 | } | |
b34976b6 | 2970 | return TRUE; |
c434dee6 AJ |
2971 | } |
2972 | ||
56ceb5b5 | 2973 | /* With the local symbol, foo, we convert |
daa67607 L |
2974 | mov foo@GOTPCREL(%rip), %reg |
2975 | to | |
2976 | lea foo(%rip), %reg | |
56ceb5b5 L |
2977 | and convert |
2978 | call/jmp *foo@GOTPCREL(%rip) | |
2979 | to | |
2980 | nop call foo/jmp foo nop | |
2981 | When PIC is false, convert | |
2982 | test %reg, foo@GOTPCREL(%rip) | |
2983 | to | |
2984 | test $foo, %reg | |
2985 | and convert | |
2986 | binop foo@GOTPCREL(%rip), %reg | |
2987 | to | |
2988 | binop $foo, %reg | |
2989 | where binop is one of adc, add, and, cmp, or, sbb, sub, xor | |
2990 | instructions. */ | |
daa67607 L |
2991 | |
2992 | static bfd_boolean | |
56ceb5b5 L |
2993 | elf_x86_64_convert_load (bfd *abfd, asection *sec, |
2994 | struct bfd_link_info *link_info) | |
daa67607 L |
2995 | { |
2996 | Elf_Internal_Shdr *symtab_hdr; | |
2997 | Elf_Internal_Rela *internal_relocs; | |
2998 | Elf_Internal_Rela *irel, *irelend; | |
2999 | bfd_byte *contents; | |
3000 | struct elf_x86_64_link_hash_table *htab; | |
3001 | bfd_boolean changed_contents; | |
3002 | bfd_boolean changed_relocs; | |
3003 | bfd_signed_vma *local_got_refcounts; | |
59cab532 | 3004 | bfd_vma maxpagesize; |
daa67607 L |
3005 | |
3006 | /* Don't even try to convert non-ELF outputs. */ | |
3007 | if (!is_elf_hash_table (link_info->hash)) | |
3008 | return FALSE; | |
3009 | ||
c1d11331 | 3010 | /* Nothing to do if there is no need or no output. */ |
daa67607 | 3011 | if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC) |
56ceb5b5 | 3012 | || sec->need_convert_load == 0 |
c8831961 | 3013 | || bfd_is_abs_section (sec->output_section)) |
daa67607 L |
3014 | return TRUE; |
3015 | ||
3016 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
3017 | ||
3018 | /* Load the relocations for this section. */ | |
3019 | internal_relocs = (_bfd_elf_link_read_relocs | |
3020 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, | |
3021 | link_info->keep_memory)); | |
3022 | if (internal_relocs == NULL) | |
3023 | return FALSE; | |
3024 | ||
3025 | htab = elf_x86_64_hash_table (link_info); | |
3026 | changed_contents = FALSE; | |
3027 | changed_relocs = FALSE; | |
3028 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
59cab532 | 3029 | maxpagesize = get_elf_backend_data (abfd)->maxpagesize; |
daa67607 L |
3030 | |
3031 | /* Get the section contents. */ | |
3032 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3033 | contents = elf_section_data (sec)->this_hdr.contents; | |
3034 | else | |
3035 | { | |
3036 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
3037 | goto error_return; | |
3038 | } | |
3039 | ||
3040 | irelend = internal_relocs + sec->reloc_count; | |
3041 | for (irel = internal_relocs; irel < irelend; irel++) | |
3042 | { | |
3043 | unsigned int r_type = ELF32_R_TYPE (irel->r_info); | |
3044 | unsigned int r_symndx = htab->r_sym (irel->r_info); | |
3045 | unsigned int indx; | |
3046 | struct elf_link_hash_entry *h; | |
59cab532 L |
3047 | asection *tsec; |
3048 | char symtype; | |
3049 | bfd_vma toff, roff; | |
56ceb5b5 | 3050 | bfd_signed_vma raddend; |
dfc87947 | 3051 | unsigned int opcode; |
56ceb5b5 | 3052 | unsigned int modrm; |
daa67607 | 3053 | |
56ceb5b5 L |
3054 | if (r_type != R_X86_64_GOTPCREL |
3055 | && r_type != R_X86_64_GOTPCRELX | |
3056 | && r_type != R_X86_64_REX_GOTPCRELX) | |
daa67607 L |
3057 | continue; |
3058 | ||
59cab532 | 3059 | roff = irel->r_offset; |
56ceb5b5 L |
3060 | if (roff < (r_type == R_X86_64_REX_GOTPCRELX ? 3 : 2)) |
3061 | continue; | |
59cab532 | 3062 | |
56ceb5b5 L |
3063 | raddend = irel->r_addend; |
3064 | /* Addend for 32-bit PC-relative relocation must be -4. */ | |
3065 | if (raddend != -4) | |
dfc87947 L |
3066 | continue; |
3067 | ||
3068 | opcode = bfd_get_8 (abfd, contents + roff - 2); | |
3069 | ||
56ceb5b5 | 3070 | /* It is OK to convert mov to lea. */ |
dfc87947 | 3071 | if (opcode != 0x8b) |
56ceb5b5 L |
3072 | { |
3073 | /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX | |
3074 | for mov call, jmp or one of adc, add, and, cmp, or, sbb, | |
3075 | sub, test, xor instructions. */ | |
3076 | if (r_type != R_X86_64_GOTPCRELX | |
3077 | && r_type != R_X86_64_REX_GOTPCRELX) | |
3078 | continue; | |
3079 | ||
3080 | /* It is OK to convert indirect branch to direct branch. */ | |
3081 | if (opcode != 0xff) | |
3082 | { | |
3083 | /* It is OK to convert adc, add, and, cmp, or, sbb, sub, | |
3084 | test, xor only when PIC is false. */ | |
3085 | if (bfd_link_pic (link_info)) | |
3086 | continue; | |
3087 | } | |
3088 | } | |
59cab532 | 3089 | |
daa67607 L |
3090 | /* Get the symbol referred to by the reloc. */ |
3091 | if (r_symndx < symtab_hdr->sh_info) | |
3092 | { | |
3093 | Elf_Internal_Sym *isym; | |
3094 | ||
3095 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
3096 | abfd, r_symndx); | |
3097 | ||
59cab532 L |
3098 | symtype = ELF_ST_TYPE (isym->st_info); |
3099 | ||
56ceb5b5 L |
3100 | /* STT_GNU_IFUNC must keep GOTPCREL relocations and skip |
3101 | relocation against undefined symbols. */ | |
77697d41 L |
3102 | if (symtype == STT_GNU_IFUNC || isym->st_shndx == SHN_UNDEF) |
3103 | continue; | |
59cab532 | 3104 | |
77697d41 L |
3105 | if (isym->st_shndx == SHN_ABS) |
3106 | tsec = bfd_abs_section_ptr; | |
3107 | else if (isym->st_shndx == SHN_COMMON) | |
3108 | tsec = bfd_com_section_ptr; | |
3109 | else if (isym->st_shndx == SHN_X86_64_LCOMMON) | |
3110 | tsec = &_bfd_elf_large_com_section; | |
3111 | else | |
3112 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3113 | ||
3114 | h = NULL; | |
3115 | toff = isym->st_value; | |
59cab532 L |
3116 | } |
3117 | else | |
3118 | { | |
3119 | indx = r_symndx - symtab_hdr->sh_info; | |
3120 | h = elf_sym_hashes (abfd)[indx]; | |
3121 | BFD_ASSERT (h != NULL); | |
3122 | ||
3123 | while (h->root.type == bfd_link_hash_indirect | |
3124 | || h->root.type == bfd_link_hash_warning) | |
3125 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3126 | ||
56ceb5b5 L |
3127 | /* STT_GNU_IFUNC must keep GOTPCREL relocations. We also |
3128 | avoid optimizing GOTPCREL relocations againt _DYNAMIC | |
3129 | since ld.so may use its link-time address. */ | |
7b7e7f1d L |
3130 | if ((h->root.type == bfd_link_hash_defined |
3131 | || h->root.type == bfd_link_hash_defweak | |
3132 | || h->root.type == bfd_link_hash_new) | |
75a06c79 | 3133 | && h->type != STT_GNU_IFUNC |
59cab532 L |
3134 | && h != htab->elf.hdynamic |
3135 | && SYMBOL_REFERENCES_LOCAL (link_info, h)) | |
7b7e7f1d L |
3136 | { |
3137 | /* bfd_link_hash_new is set by an assignment in a linker | |
3138 | script in bfd_elf_record_link_assignment. FIXME: If | |
3139 | we ever get a linker error due relocation overflow, we | |
3140 | will skip this optimization. */ | |
3141 | if (h->root.type == bfd_link_hash_new) | |
3142 | goto convert; | |
3143 | tsec = h->root.u.def.section; | |
3144 | toff = h->root.u.def.value; | |
3145 | symtype = h->type; | |
3146 | } | |
77697d41 L |
3147 | else |
3148 | continue; | |
59cab532 L |
3149 | } |
3150 | ||
59cab532 L |
3151 | if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE) |
3152 | { | |
3153 | /* At this stage in linking, no SEC_MERGE symbol has been | |
3154 | adjusted, so all references to such symbols need to be | |
3155 | passed through _bfd_merged_section_offset. (Later, in | |
3156 | relocate_section, all SEC_MERGE symbols *except* for | |
3157 | section symbols have been adjusted.) | |
3158 | ||
3159 | gas may reduce relocations against symbols in SEC_MERGE | |
3160 | sections to a relocation against the section symbol when | |
3161 | the original addend was zero. When the reloc is against | |
3162 | a section symbol we should include the addend in the | |
3163 | offset passed to _bfd_merged_section_offset, since the | |
3164 | location of interest is the original symbol. On the | |
3165 | other hand, an access to "sym+addend" where "sym" is not | |
3166 | a section symbol should not include the addend; Such an | |
3167 | access is presumed to be an offset from "sym"; The | |
3168 | location of interest is just "sym". */ | |
3169 | if (symtype == STT_SECTION) | |
56ceb5b5 | 3170 | toff += raddend; |
59cab532 L |
3171 | |
3172 | toff = _bfd_merged_section_offset (abfd, &tsec, | |
3173 | elf_section_data (tsec)->sec_info, | |
3174 | toff); | |
3175 | ||
3176 | if (symtype != STT_SECTION) | |
56ceb5b5 | 3177 | toff += raddend; |
59cab532 L |
3178 | } |
3179 | else | |
56ceb5b5 | 3180 | toff += raddend; |
59cab532 L |
3181 | |
3182 | /* Don't convert if R_X86_64_PC32 relocation overflows. */ | |
3183 | if (tsec->output_section == sec->output_section) | |
3184 | { | |
3185 | if ((toff - roff + 0x80000000) > 0xffffffff) | |
3186 | continue; | |
3187 | } | |
3188 | else | |
3189 | { | |
3190 | asection *asect; | |
3191 | bfd_size_type size; | |
3192 | ||
3193 | /* At this point, we don't know the load addresses of TSEC | |
3194 | section nor SEC section. We estimate the distrance between | |
3195 | SEC and TSEC. */ | |
3196 | size = 0; | |
3197 | for (asect = sec->output_section; | |
3198 | asect != NULL && asect != tsec->output_section; | |
3199 | asect = asect->next) | |
3200 | { | |
3201 | asection *i; | |
3202 | for (i = asect->output_section->map_head.s; | |
3203 | i != NULL; | |
3204 | i = i->map_head.s) | |
3205 | { | |
3206 | size = align_power (size, i->alignment_power); | |
3207 | size += i->size; | |
3208 | } | |
daa67607 | 3209 | } |
59cab532 | 3210 | |
56ceb5b5 L |
3211 | /* Don't convert GOTPCREL relocations if TSEC isn't placed |
3212 | after SEC. */ | |
59cab532 L |
3213 | if (asect == NULL) |
3214 | continue; | |
3215 | ||
3216 | /* Take PT_GNU_RELRO segment into account by adding | |
3217 | maxpagesize. */ | |
3218 | if ((toff + size + maxpagesize - roff + 0x80000000) | |
3219 | > 0xffffffff) | |
3220 | continue; | |
daa67607 L |
3221 | } |
3222 | ||
7b7e7f1d | 3223 | convert: |
56ceb5b5 L |
3224 | if (opcode == 0xff) |
3225 | { | |
3226 | /* We have "call/jmp *foo@GOTPCREL(%rip)". */ | |
3227 | unsigned int nop; | |
caa65211 | 3228 | unsigned int disp; |
56ceb5b5 L |
3229 | bfd_vma nop_offset; |
3230 | ||
3231 | /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to | |
3232 | R_X86_64_PC32. */ | |
3233 | modrm = bfd_get_8 (abfd, contents + roff - 1); | |
3234 | if (modrm == 0x25) | |
3235 | { | |
56ceb5b5 L |
3236 | /* Convert to "jmp foo nop". */ |
3237 | modrm = 0xe9; | |
3238 | nop = NOP_OPCODE; | |
3239 | nop_offset = irel->r_offset + 3; | |
3240 | disp = bfd_get_32 (abfd, contents + irel->r_offset); | |
3241 | irel->r_offset -= 1; | |
3242 | bfd_put_32 (abfd, disp, contents + irel->r_offset); | |
3243 | } | |
3244 | else | |
3245 | { | |
3246 | /* Convert to "nop call foo". ADDR_PREFIX_OPCODE | |
3247 | is a nop prefix. */ | |
3248 | modrm = 0xe8; | |
caa65211 L |
3249 | nop = link_info->call_nop_byte; |
3250 | if (link_info->call_nop_as_suffix) | |
3251 | { | |
3252 | nop_offset = irel->r_offset + 3; | |
3253 | disp = bfd_get_32 (abfd, contents + irel->r_offset); | |
3254 | irel->r_offset -= 1; | |
3255 | bfd_put_32 (abfd, disp, contents + irel->r_offset); | |
3256 | } | |
3257 | else | |
3258 | nop_offset = irel->r_offset - 2; | |
56ceb5b5 L |
3259 | } |
3260 | bfd_put_8 (abfd, nop, contents + nop_offset); | |
3261 | bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1); | |
3262 | r_type = R_X86_64_PC32; | |
3263 | } | |
3264 | else | |
3265 | { | |
3266 | if (opcode == 0x8b) | |
3267 | { | |
3268 | /* Convert "mov foo@GOTPCREL(%rip), %reg" to | |
3269 | "lea foo(%rip), %reg". */ | |
3270 | opcode = 0x8d; | |
3271 | r_type = R_X86_64_PC32; | |
3272 | } | |
3273 | else | |
3274 | { | |
3275 | modrm = bfd_get_8 (abfd, contents + roff - 1); | |
3276 | if (opcode == 0x85) | |
3277 | { | |
3278 | /* Convert "test %reg, foo@GOTPCREL(%rip)" to | |
3279 | "test $foo, %reg". */ | |
3280 | modrm = 0xc0 | (modrm & 0x38) >> 3; | |
3281 | opcode = 0xf7; | |
3282 | } | |
3283 | else | |
3284 | { | |
3285 | /* Convert "binop foo@GOTPCREL(%rip), %reg" to | |
3286 | "binop $foo, %reg". */ | |
3287 | modrm = 0xc0 | (modrm & 0x38) >> 3 | (opcode & 0x3c); | |
3288 | opcode = 0x81; | |
3289 | } | |
3290 | bfd_put_8 (abfd, modrm, contents + roff - 1); | |
3291 | ||
3292 | if (r_type == R_X86_64_REX_GOTPCRELX) | |
3293 | { | |
3294 | /* Move the R bit to the B bit in REX byte. */ | |
3295 | unsigned int rex = bfd_get_8 (abfd, contents + roff - 3); | |
3296 | rex = (rex & ~REX_R) | (rex & REX_R) >> 2; | |
3297 | bfd_put_8 (abfd, rex, contents + roff - 3); | |
3298 | } | |
3299 | /* No addend for R_X86_64_32S relocation. */ | |
3300 | irel->r_addend = 0; | |
3301 | r_type = R_X86_64_32S; | |
3302 | } | |
3303 | ||
3304 | bfd_put_8 (abfd, opcode, contents + roff - 2); | |
3305 | } | |
3306 | ||
3307 | irel->r_info = htab->r_info (r_symndx, r_type); | |
59cab532 L |
3308 | changed_contents = TRUE; |
3309 | changed_relocs = TRUE; | |
3310 | ||
77697d41 | 3311 | if (h) |
59cab532 | 3312 | { |
77697d41 L |
3313 | if (h->got.refcount > 0) |
3314 | h->got.refcount -= 1; | |
59cab532 L |
3315 | } |
3316 | else | |
daa67607 | 3317 | { |
77697d41 L |
3318 | if (local_got_refcounts != NULL |
3319 | && local_got_refcounts[r_symndx] > 0) | |
3320 | local_got_refcounts[r_symndx] -= 1; | |
daa67607 L |
3321 | } |
3322 | } | |
3323 | ||
3324 | if (contents != NULL | |
3325 | && elf_section_data (sec)->this_hdr.contents != contents) | |
3326 | { | |
3327 | if (!changed_contents && !link_info->keep_memory) | |
3328 | free (contents); | |
3329 | else | |
3330 | { | |
3331 | /* Cache the section contents for elf_link_input_bfd. */ | |
3332 | elf_section_data (sec)->this_hdr.contents = contents; | |
3333 | } | |
3334 | } | |
3335 | ||
3336 | if (elf_section_data (sec)->relocs != internal_relocs) | |
3337 | { | |
3338 | if (!changed_relocs) | |
3339 | free (internal_relocs); | |
3340 | else | |
3341 | elf_section_data (sec)->relocs = internal_relocs; | |
3342 | } | |
3343 | ||
3344 | return TRUE; | |
3345 | ||
3346 | error_return: | |
3347 | if (contents != NULL | |
3348 | && elf_section_data (sec)->this_hdr.contents != contents) | |
3349 | free (contents); | |
3350 | if (internal_relocs != NULL | |
3351 | && elf_section_data (sec)->relocs != internal_relocs) | |
3352 | free (internal_relocs); | |
3353 | return FALSE; | |
3354 | } | |
3355 | ||
70256ad8 AJ |
3356 | /* Set the sizes of the dynamic sections. */ |
3357 | ||
b34976b6 | 3358 | static bfd_boolean |
351f65ca L |
3359 | elf_x86_64_size_dynamic_sections (bfd *output_bfd, |
3360 | struct bfd_link_info *info) | |
70256ad8 | 3361 | { |
351f65ca | 3362 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
3363 | bfd *dynobj; |
3364 | asection *s; | |
b34976b6 | 3365 | bfd_boolean relocs; |
c434dee6 | 3366 | bfd *ibfd; |
351f65ca | 3367 | const struct elf_backend_data *bed; |
70256ad8 | 3368 | |
351f65ca | 3369 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
3370 | if (htab == NULL) |
3371 | return FALSE; | |
351f65ca | 3372 | bed = get_elf_backend_data (output_bfd); |
4dfe6ac6 | 3373 | |
c434dee6 AJ |
3374 | dynobj = htab->elf.dynobj; |
3375 | if (dynobj == NULL) | |
3376 | abort (); | |
70256ad8 | 3377 | |
c434dee6 | 3378 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
3379 | { |
3380 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 3381 | if (bfd_link_executable (info) && !info->nointerp) |
70256ad8 | 3382 | { |
3d4d4302 | 3383 | s = bfd_get_linker_section (dynobj, ".interp"); |
c434dee6 AJ |
3384 | if (s == NULL) |
3385 | abort (); | |
351f65ca L |
3386 | s->size = htab->dynamic_interpreter_size; |
3387 | s->contents = (unsigned char *) htab->dynamic_interpreter; | |
70256ad8 AJ |
3388 | } |
3389 | } | |
70256ad8 | 3390 | |
c434dee6 AJ |
3391 | /* Set up .got offsets for local syms, and space for local dynamic |
3392 | relocs. */ | |
c72f2fb2 | 3393 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
70256ad8 | 3394 | { |
c434dee6 AJ |
3395 | bfd_signed_vma *local_got; |
3396 | bfd_signed_vma *end_local_got; | |
bffbf940 | 3397 | char *local_tls_type; |
67a4f2b7 | 3398 | bfd_vma *local_tlsdesc_gotent; |
c434dee6 AJ |
3399 | bfd_size_type locsymcount; |
3400 | Elf_Internal_Shdr *symtab_hdr; | |
3401 | asection *srel; | |
70256ad8 | 3402 | |
0ffa91dd | 3403 | if (! is_x86_64_elf (ibfd)) |
70256ad8 AJ |
3404 | continue; |
3405 | ||
c434dee6 | 3406 | for (s = ibfd->sections; s != NULL; s = s->next) |
70256ad8 | 3407 | { |
e03a8ed8 | 3408 | struct elf_dyn_relocs *p; |
c434dee6 | 3409 | |
56ceb5b5 | 3410 | if (!elf_x86_64_convert_load (ibfd, s, info)) |
daa67607 L |
3411 | return FALSE; |
3412 | ||
e03a8ed8 | 3413 | for (p = (struct elf_dyn_relocs *) |
e81d3500 | 3414 | (elf_section_data (s)->local_dynrel); |
c434dee6 AJ |
3415 | p != NULL; |
3416 | p = p->next) | |
70256ad8 | 3417 | { |
c434dee6 AJ |
3418 | if (!bfd_is_abs_section (p->sec) |
3419 | && bfd_is_abs_section (p->sec->output_section)) | |
3420 | { | |
3421 | /* Input section has been discarded, either because | |
3422 | it is a copy of a linkonce section or due to | |
3423 | linker script /DISCARD/, so we'll be discarding | |
3424 | the relocs too. */ | |
3425 | } | |
3426 | else if (p->count != 0) | |
3427 | { | |
3428 | srel = elf_section_data (p->sec)->sreloc; | |
351f65ca | 3429 | srel->size += p->count * bed->s->sizeof_rela; |
4b819e1f L |
3430 | if ((p->sec->output_section->flags & SEC_READONLY) != 0 |
3431 | && (info->flags & DF_TEXTREL) == 0) | |
b70321a2 L |
3432 | { |
3433 | info->flags |= DF_TEXTREL; | |
0e1862bb | 3434 | if ((info->warn_shared_textrel && bfd_link_pic (info)) |
1952c5cd L |
3435 | || info->error_textrel) |
3436 | info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"), | |
b70321a2 | 3437 | p->sec->owner, p->sec); |
b70321a2 | 3438 | } |
c434dee6 | 3439 | } |
70256ad8 AJ |
3440 | } |
3441 | } | |
c434dee6 AJ |
3442 | |
3443 | local_got = elf_local_got_refcounts (ibfd); | |
3444 | if (!local_got) | |
3445 | continue; | |
3446 | ||
0ffa91dd | 3447 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c434dee6 AJ |
3448 | locsymcount = symtab_hdr->sh_info; |
3449 | end_local_got = local_got + locsymcount; | |
351f65ca L |
3450 | local_tls_type = elf_x86_64_local_got_tls_type (ibfd); |
3451 | local_tlsdesc_gotent = elf_x86_64_local_tlsdesc_gotent (ibfd); | |
6de2ae4a L |
3452 | s = htab->elf.sgot; |
3453 | srel = htab->elf.srelgot; | |
67a4f2b7 AO |
3454 | for (; local_got < end_local_got; |
3455 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
70256ad8 | 3456 | { |
67a4f2b7 | 3457 | *local_tlsdesc_gotent = (bfd_vma) -1; |
c434dee6 | 3458 | if (*local_got > 0) |
70256ad8 | 3459 | { |
67a4f2b7 AO |
3460 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
3461 | { | |
6de2ae4a | 3462 | *local_tlsdesc_gotent = htab->elf.sgotplt->size |
351f65ca | 3463 | - elf_x86_64_compute_jump_table_size (htab); |
6de2ae4a | 3464 | htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE; |
67a4f2b7 AO |
3465 | *local_got = (bfd_vma) -2; |
3466 | } | |
3467 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
3468 | || GOT_TLS_GD_P (*local_tls_type)) | |
3469 | { | |
3470 | *local_got = s->size; | |
3471 | s->size += GOT_ENTRY_SIZE; | |
3472 | if (GOT_TLS_GD_P (*local_tls_type)) | |
3473 | s->size += GOT_ENTRY_SIZE; | |
3474 | } | |
0e1862bb | 3475 | if (bfd_link_pic (info) |
67a4f2b7 | 3476 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
bffbf940 | 3477 | || *local_tls_type == GOT_TLS_IE) |
67a4f2b7 AO |
3478 | { |
3479 | if (GOT_TLS_GDESC_P (*local_tls_type)) | |
3480 | { | |
6de2ae4a | 3481 | htab->elf.srelplt->size |
351f65ca | 3482 | += bed->s->sizeof_rela; |
67a4f2b7 AO |
3483 | htab->tlsdesc_plt = (bfd_vma) -1; |
3484 | } | |
3485 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
3486 | || GOT_TLS_GD_P (*local_tls_type)) | |
351f65ca | 3487 | srel->size += bed->s->sizeof_rela; |
67a4f2b7 | 3488 | } |
70256ad8 AJ |
3489 | } |
3490 | else | |
c434dee6 AJ |
3491 | *local_got = (bfd_vma) -1; |
3492 | } | |
3493 | } | |
70256ad8 | 3494 | |
bffbf940 JJ |
3495 | if (htab->tls_ld_got.refcount > 0) |
3496 | { | |
3497 | /* Allocate 2 got entries and 1 dynamic reloc for R_X86_64_TLSLD | |
3498 | relocs. */ | |
6de2ae4a L |
3499 | htab->tls_ld_got.offset = htab->elf.sgot->size; |
3500 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
351f65ca | 3501 | htab->elf.srelgot->size += bed->s->sizeof_rela; |
bffbf940 JJ |
3502 | } |
3503 | else | |
3504 | htab->tls_ld_got.offset = -1; | |
3505 | ||
c434dee6 AJ |
3506 | /* Allocate global sym .plt and .got entries, and space for global |
3507 | sym dynamic relocs. */ | |
351f65ca | 3508 | elf_link_hash_traverse (&htab->elf, elf_x86_64_allocate_dynrelocs, |
eb4ff4d6 | 3509 | info); |
c434dee6 | 3510 | |
c25bc9fc L |
3511 | /* Allocate .plt and .got entries, and space for local symbols. */ |
3512 | htab_traverse (htab->loc_hash_table, | |
351f65ca | 3513 | elf_x86_64_allocate_local_dynrelocs, |
c25bc9fc L |
3514 | info); |
3515 | ||
67a4f2b7 AO |
3516 | /* For every jump slot reserved in the sgotplt, reloc_count is |
3517 | incremented. However, when we reserve space for TLS descriptors, | |
3518 | it's not incremented, so in order to compute the space reserved | |
3519 | for them, it suffices to multiply the reloc count by the jump | |
e1f98742 L |
3520 | slot size. |
3521 | ||
3522 | PR ld/13302: We start next_irelative_index at the end of .rela.plt | |
3523 | so that R_X86_64_IRELATIVE entries come last. */ | |
6de2ae4a | 3524 | if (htab->elf.srelplt) |
e1f98742 L |
3525 | { |
3526 | htab->sgotplt_jump_table_size | |
3527 | = elf_x86_64_compute_jump_table_size (htab); | |
3528 | htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1; | |
3529 | } | |
3530 | else if (htab->elf.irelplt) | |
3531 | htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1; | |
67a4f2b7 AO |
3532 | |
3533 | if (htab->tlsdesc_plt) | |
3534 | { | |
3535 | /* If we're not using lazy TLS relocations, don't generate the | |
3536 | PLT and GOT entries they require. */ | |
3537 | if ((info->flags & DF_BIND_NOW)) | |
3538 | htab->tlsdesc_plt = 0; | |
3539 | else | |
3540 | { | |
6de2ae4a L |
3541 | htab->tlsdesc_got = htab->elf.sgot->size; |
3542 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
67a4f2b7 AO |
3543 | /* Reserve room for the initial entry. |
3544 | FIXME: we could probably do away with it in this case. */ | |
6de2ae4a | 3545 | if (htab->elf.splt->size == 0) |
eed180f8 | 3546 | htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd); |
6de2ae4a | 3547 | htab->tlsdesc_plt = htab->elf.splt->size; |
eed180f8 | 3548 | htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd); |
67a4f2b7 AO |
3549 | } |
3550 | } | |
3551 | ||
a7b16ceb L |
3552 | if (htab->elf.sgotplt) |
3553 | { | |
3554 | /* Don't allocate .got.plt section if there are no GOT nor PLT | |
eed180f8 | 3555 | entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ |
9d4b2dba L |
3556 | if ((htab->elf.hgot == NULL |
3557 | || !htab->elf.hgot->ref_regular_nonweak) | |
e28df02b L |
3558 | && (htab->elf.sgotplt->size |
3559 | == get_elf_backend_data (output_bfd)->got_header_size) | |
a7b16ceb L |
3560 | && (htab->elf.splt == NULL |
3561 | || htab->elf.splt->size == 0) | |
3562 | && (htab->elf.sgot == NULL | |
3563 | || htab->elf.sgot->size == 0) | |
3564 | && (htab->elf.iplt == NULL | |
3565 | || htab->elf.iplt->size == 0) | |
3566 | && (htab->elf.igotplt == NULL | |
3567 | || htab->elf.igotplt->size == 0)) | |
3568 | htab->elf.sgotplt->size = 0; | |
3569 | } | |
3570 | ||
9a2a56cc AM |
3571 | if (htab->plt_eh_frame != NULL |
3572 | && htab->elf.splt != NULL | |
3573 | && htab->elf.splt->size != 0 | |
3574 | && !bfd_is_abs_section (htab->elf.splt->output_section) | |
3575 | && _bfd_elf_eh_frame_present (info)) | |
3576 | { | |
3577 | const struct elf_x86_64_backend_data *arch_data | |
f8222080 | 3578 | = get_elf_x86_64_arch_data (bed); |
9a2a56cc AM |
3579 | htab->plt_eh_frame->size = arch_data->eh_frame_plt_size; |
3580 | } | |
3581 | ||
c434dee6 AJ |
3582 | /* We now have determined the sizes of the various dynamic sections. |
3583 | Allocate memory for them. */ | |
b34976b6 | 3584 | relocs = FALSE; |
c434dee6 AJ |
3585 | for (s = dynobj->sections; s != NULL; s = s->next) |
3586 | { | |
3587 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
3588 | continue; | |
3589 | ||
6de2ae4a L |
3590 | if (s == htab->elf.splt |
3591 | || s == htab->elf.sgot | |
3592 | || s == htab->elf.sgotplt | |
3593 | || s == htab->elf.iplt | |
3594 | || s == htab->elf.igotplt | |
0ff2b86e | 3595 | || s == htab->plt_bnd |
dd7e64d4 | 3596 | || s == htab->plt_got |
9a2a56cc | 3597 | || s == htab->plt_eh_frame |
75ff4589 | 3598 | || s == htab->sdynbss) |
c434dee6 AJ |
3599 | { |
3600 | /* Strip this section if we don't need it; see the | |
3601 | comment below. */ | |
3602 | } | |
0112cd26 | 3603 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
c434dee6 | 3604 | { |
6de2ae4a | 3605 | if (s->size != 0 && s != htab->elf.srelplt) |
b34976b6 | 3606 | relocs = TRUE; |
c434dee6 AJ |
3607 | |
3608 | /* We use the reloc_count field as a counter if we need | |
3609 | to copy relocs into the output file. */ | |
6de2ae4a | 3610 | if (s != htab->elf.srelplt) |
67a4f2b7 | 3611 | s->reloc_count = 0; |
70256ad8 | 3612 | } |
c434dee6 | 3613 | else |
70256ad8 AJ |
3614 | { |
3615 | /* It's not one of our sections, so don't allocate space. */ | |
3616 | continue; | |
3617 | } | |
3618 | ||
eea6121a | 3619 | if (s->size == 0) |
70256ad8 | 3620 | { |
c434dee6 AJ |
3621 | /* If we don't need this section, strip it from the |
3622 | output file. This is mostly to handle .rela.bss and | |
3623 | .rela.plt. We must create both sections in | |
3624 | create_dynamic_sections, because they must be created | |
3625 | before the linker maps input sections to output | |
3626 | sections. The linker does that before | |
3627 | adjust_dynamic_symbol is called, and it is that | |
3628 | function which decides whether anything needs to go | |
3629 | into these sections. */ | |
3630 | ||
8423293d | 3631 | s->flags |= SEC_EXCLUDE; |
70256ad8 AJ |
3632 | continue; |
3633 | } | |
3634 | ||
c456f082 AM |
3635 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
3636 | continue; | |
3637 | ||
70256ad8 AJ |
3638 | /* Allocate memory for the section contents. We use bfd_zalloc |
3639 | here in case unused entries are not reclaimed before the | |
3640 | section's contents are written out. This should not happen, | |
3641 | but this way if it does, we get a R_X86_64_NONE reloc instead | |
3642 | of garbage. */ | |
eea6121a | 3643 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c434dee6 | 3644 | if (s->contents == NULL) |
b34976b6 | 3645 | return FALSE; |
70256ad8 AJ |
3646 | } |
3647 | ||
e41b3a13 | 3648 | if (htab->plt_eh_frame != NULL |
9a2a56cc AM |
3649 | && htab->plt_eh_frame->contents != NULL) |
3650 | { | |
3651 | const struct elf_x86_64_backend_data *arch_data | |
f8222080 | 3652 | = get_elf_x86_64_arch_data (bed); |
9a2a56cc AM |
3653 | |
3654 | memcpy (htab->plt_eh_frame->contents, | |
3655 | arch_data->eh_frame_plt, htab->plt_eh_frame->size); | |
3656 | bfd_put_32 (dynobj, htab->elf.splt->size, | |
3657 | htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET); | |
3658 | } | |
e41b3a13 | 3659 | |
c434dee6 | 3660 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
3661 | { |
3662 | /* Add some entries to the .dynamic section. We fill in the | |
351f65ca | 3663 | values later, in elf_x86_64_finish_dynamic_sections, but we |
70256ad8 | 3664 | must add the entries now so that we get the correct size for |
407443a3 | 3665 | the .dynamic section. The DT_DEBUG entry is filled in by the |
70256ad8 | 3666 | dynamic linker and used by the debugger. */ |
dc810e39 | 3667 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 3668 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 3669 | |
0e1862bb | 3670 | if (bfd_link_executable (info)) |
70256ad8 | 3671 | { |
dc810e39 | 3672 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 3673 | return FALSE; |
70256ad8 AJ |
3674 | } |
3675 | ||
6de2ae4a | 3676 | if (htab->elf.splt->size != 0) |
70256ad8 | 3677 | { |
7c1e8d3e L |
3678 | /* DT_PLTGOT is used by prelink even if there is no PLT |
3679 | relocation. */ | |
3680 | if (!add_dynamic_entry (DT_PLTGOT, 0)) | |
b34976b6 | 3681 | return FALSE; |
67a4f2b7 | 3682 | |
7c1e8d3e L |
3683 | if (htab->elf.srelplt->size != 0) |
3684 | { | |
3685 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) | |
3686 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3687 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
3688 | return FALSE; | |
3689 | } | |
3690 | ||
67a4f2b7 AO |
3691 | if (htab->tlsdesc_plt |
3692 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
3693 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
3694 | return FALSE; | |
70256ad8 AJ |
3695 | } |
3696 | ||
3697 | if (relocs) | |
3698 | { | |
dc810e39 AM |
3699 | if (!add_dynamic_entry (DT_RELA, 0) |
3700 | || !add_dynamic_entry (DT_RELASZ, 0) | |
351f65ca | 3701 | || !add_dynamic_entry (DT_RELAENT, bed->s->sizeof_rela)) |
b34976b6 | 3702 | return FALSE; |
70256ad8 | 3703 | |
c434dee6 AJ |
3704 | /* If any dynamic relocs apply to a read-only section, |
3705 | then we need a DT_TEXTREL entry. */ | |
3706 | if ((info->flags & DF_TEXTREL) == 0) | |
eed180f8 | 3707 | elf_link_hash_traverse (&htab->elf, |
351f65ca | 3708 | elf_x86_64_readonly_dynrelocs, |
eb4ff4d6 | 3709 | info); |
c434dee6 AJ |
3710 | |
3711 | if ((info->flags & DF_TEXTREL) != 0) | |
3712 | { | |
8efa2874 L |
3713 | if ((elf_tdata (output_bfd)->has_gnu_symbols |
3714 | & elf_gnu_symbol_ifunc) == elf_gnu_symbol_ifunc) | |
3715 | { | |
3716 | info->callbacks->einfo | |
3717 | (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n")); | |
3718 | bfd_set_error (bfd_error_bad_value); | |
3719 | return FALSE; | |
3720 | } | |
3721 | ||
c434dee6 | 3722 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 3723 | return FALSE; |
c434dee6 | 3724 | } |
70256ad8 AJ |
3725 | } |
3726 | } | |
dc810e39 | 3727 | #undef add_dynamic_entry |
70256ad8 | 3728 | |
b34976b6 | 3729 | return TRUE; |
70256ad8 AJ |
3730 | } |
3731 | ||
67a4f2b7 | 3732 | static bfd_boolean |
351f65ca L |
3733 | elf_x86_64_always_size_sections (bfd *output_bfd, |
3734 | struct bfd_link_info *info) | |
67a4f2b7 AO |
3735 | { |
3736 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
3737 | ||
3738 | if (tls_sec) | |
3739 | { | |
3740 | struct elf_link_hash_entry *tlsbase; | |
3741 | ||
3742 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
3743 | "_TLS_MODULE_BASE_", | |
3744 | FALSE, FALSE, FALSE); | |
3745 | ||
3746 | if (tlsbase && tlsbase->type == STT_TLS) | |
3747 | { | |
351f65ca | 3748 | struct elf_x86_64_link_hash_table *htab; |
67a4f2b7 AO |
3749 | struct bfd_link_hash_entry *bh = NULL; |
3750 | const struct elf_backend_data *bed | |
3751 | = get_elf_backend_data (output_bfd); | |
3752 | ||
351f65ca | 3753 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
3754 | if (htab == NULL) |
3755 | return FALSE; | |
3756 | ||
67a4f2b7 AO |
3757 | if (!(_bfd_generic_link_add_one_symbol |
3758 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
3759 | tls_sec, 0, NULL, FALSE, | |
3760 | bed->collect, &bh))) | |
3761 | return FALSE; | |
9f03412a | 3762 | |
4dfe6ac6 | 3763 | htab->tls_module_base = bh; |
9f03412a | 3764 | |
67a4f2b7 AO |
3765 | tlsbase = (struct elf_link_hash_entry *)bh; |
3766 | tlsbase->def_regular = 1; | |
3767 | tlsbase->other = STV_HIDDEN; | |
576fa883 | 3768 | tlsbase->root.linker_def = 1; |
67a4f2b7 AO |
3769 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); |
3770 | } | |
3771 | } | |
3772 | ||
3773 | return TRUE; | |
3774 | } | |
3775 | ||
9f03412a AO |
3776 | /* _TLS_MODULE_BASE_ needs to be treated especially when linking |
3777 | executables. Rather than setting it to the beginning of the TLS | |
3778 | section, we have to set it to the end. This function may be called | |
3779 | multiple times, it is idempotent. */ | |
3780 | ||
3781 | static void | |
351f65ca | 3782 | elf_x86_64_set_tls_module_base (struct bfd_link_info *info) |
9f03412a | 3783 | { |
351f65ca | 3784 | struct elf_x86_64_link_hash_table *htab; |
9f03412a AO |
3785 | struct bfd_link_hash_entry *base; |
3786 | ||
0e1862bb | 3787 | if (!bfd_link_executable (info)) |
9f03412a AO |
3788 | return; |
3789 | ||
351f65ca | 3790 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
3791 | if (htab == NULL) |
3792 | return; | |
9f03412a | 3793 | |
4dfe6ac6 NC |
3794 | base = htab->tls_module_base; |
3795 | if (base == NULL) | |
9f03412a AO |
3796 | return; |
3797 | ||
4dfe6ac6 | 3798 | base->u.def.value = htab->elf.tls_size; |
9f03412a AO |
3799 | } |
3800 | ||
bffbf940 JJ |
3801 | /* Return the base VMA address which should be subtracted from real addresses |
3802 | when resolving @dtpoff relocation. | |
3803 | This is PT_TLS segment p_vaddr. */ | |
3804 | ||
3805 | static bfd_vma | |
351f65ca | 3806 | elf_x86_64_dtpoff_base (struct bfd_link_info *info) |
bffbf940 | 3807 | { |
e1918d23 AM |
3808 | /* If tls_sec is NULL, we should have signalled an error already. */ |
3809 | if (elf_hash_table (info)->tls_sec == NULL) | |
bffbf940 | 3810 | return 0; |
e1918d23 | 3811 | return elf_hash_table (info)->tls_sec->vma; |
bffbf940 JJ |
3812 | } |
3813 | ||
3814 | /* Return the relocation value for @tpoff relocation | |
3815 | if STT_TLS virtual address is ADDRESS. */ | |
3816 | ||
3817 | static bfd_vma | |
351f65ca | 3818 | elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address) |
bffbf940 | 3819 | { |
e1918d23 | 3820 | struct elf_link_hash_table *htab = elf_hash_table (info); |
7dc98aea RO |
3821 | const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd); |
3822 | bfd_vma static_tls_size; | |
bffbf940 JJ |
3823 | |
3824 | /* If tls_segment is NULL, we should have signalled an error already. */ | |
e1918d23 | 3825 | if (htab->tls_sec == NULL) |
bffbf940 | 3826 | return 0; |
7dc98aea RO |
3827 | |
3828 | /* Consider special static TLS alignment requirements. */ | |
3829 | static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment); | |
3830 | return address - static_tls_size - htab->tls_sec->vma; | |
bffbf940 JJ |
3831 | } |
3832 | ||
90f487df L |
3833 | /* Is the instruction before OFFSET in CONTENTS a 32bit relative |
3834 | branch? */ | |
3835 | ||
3836 | static bfd_boolean | |
3837 | is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset) | |
3838 | { | |
3839 | /* Opcode Instruction | |
3840 | 0xe8 call | |
3841 | 0xe9 jump | |
3842 | 0x0f 0x8x conditional jump */ | |
3843 | return ((offset > 0 | |
3844 | && (contents [offset - 1] == 0xe8 | |
3845 | || contents [offset - 1] == 0xe9)) | |
3846 | || (offset > 1 | |
3847 | && contents [offset - 2] == 0x0f | |
3848 | && (contents [offset - 1] & 0xf0) == 0x80)); | |
3849 | } | |
3850 | ||
8d88c4ca NC |
3851 | /* Relocate an x86_64 ELF section. */ |
3852 | ||
b34976b6 | 3853 | static bfd_boolean |
351f65ca L |
3854 | elf_x86_64_relocate_section (bfd *output_bfd, |
3855 | struct bfd_link_info *info, | |
3856 | bfd *input_bfd, | |
3857 | asection *input_section, | |
3858 | bfd_byte *contents, | |
3859 | Elf_Internal_Rela *relocs, | |
3860 | Elf_Internal_Sym *local_syms, | |
3861 | asection **local_sections) | |
8d88c4ca | 3862 | { |
351f65ca | 3863 | struct elf_x86_64_link_hash_table *htab; |
8d88c4ca NC |
3864 | Elf_Internal_Shdr *symtab_hdr; |
3865 | struct elf_link_hash_entry **sym_hashes; | |
3866 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 3867 | bfd_vma *local_tlsdesc_gotents; |
c434dee6 | 3868 | Elf_Internal_Rela *rel; |
8d88c4ca | 3869 | Elf_Internal_Rela *relend; |
eed180f8 | 3870 | const unsigned int plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd); |
8d88c4ca | 3871 | |
0ffa91dd NC |
3872 | BFD_ASSERT (is_x86_64_elf (input_bfd)); |
3873 | ||
351f65ca | 3874 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
3875 | if (htab == NULL) |
3876 | return FALSE; | |
0ffa91dd | 3877 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
8d88c4ca NC |
3878 | sym_hashes = elf_sym_hashes (input_bfd); |
3879 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
351f65ca | 3880 | local_tlsdesc_gotents = elf_x86_64_local_tlsdesc_gotent (input_bfd); |
8d88c4ca | 3881 | |
351f65ca | 3882 | elf_x86_64_set_tls_module_base (info); |
9f03412a | 3883 | |
c434dee6 | 3884 | rel = relocs; |
8d88c4ca | 3885 | relend = relocs + input_section->reloc_count; |
c434dee6 | 3886 | for (; rel < relend; rel++) |
8d88c4ca | 3887 | { |
bffbf940 | 3888 | unsigned int r_type; |
8d88c4ca NC |
3889 | reloc_howto_type *howto; |
3890 | unsigned long r_symndx; | |
3891 | struct elf_link_hash_entry *h; | |
0ff2b86e | 3892 | struct elf_x86_64_link_hash_entry *eh; |
8d88c4ca NC |
3893 | Elf_Internal_Sym *sym; |
3894 | asection *sec; | |
0ff2b86e | 3895 | bfd_vma off, offplt, plt_offset; |
8d88c4ca | 3896 | bfd_vma relocation; |
b34976b6 | 3897 | bfd_boolean unresolved_reloc; |
8d88c4ca | 3898 | bfd_reloc_status_type r; |
bffbf940 | 3899 | int tls_type; |
0ff2b86e | 3900 | asection *base_got, *resolved_plt; |
1788fc08 | 3901 | bfd_vma st_size; |
8d88c4ca | 3902 | |
351f65ca | 3903 | r_type = ELF32_R_TYPE (rel->r_info); |
fe4770f4 AJ |
3904 | if (r_type == (int) R_X86_64_GNU_VTINHERIT |
3905 | || r_type == (int) R_X86_64_GNU_VTENTRY) | |
3906 | continue; | |
8d88c4ca | 3907 | |
9911c0fc | 3908 | if (r_type >= (int) R_X86_64_standard) |
8da6118f | 3909 | { |
9911c0fc L |
3910 | (*_bfd_error_handler) |
3911 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), | |
3912 | input_bfd, input_section, r_type); | |
8da6118f | 3913 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3914 | return FALSE; |
8da6118f | 3915 | } |
8d88c4ca | 3916 | |
d7921315 | 3917 | if (r_type != (int) R_X86_64_32 |
eed180f8 | 3918 | || ABI_64_P (output_bfd)) |
d7921315 L |
3919 | howto = x86_64_elf_howto_table + r_type; |
3920 | else | |
3921 | howto = (x86_64_elf_howto_table | |
3922 | + ARRAY_SIZE (x86_64_elf_howto_table) - 1); | |
351f65ca | 3923 | r_symndx = htab->r_sym (rel->r_info); |
8d88c4ca NC |
3924 | h = NULL; |
3925 | sym = NULL; | |
3926 | sec = NULL; | |
b34976b6 | 3927 | unresolved_reloc = FALSE; |
8d88c4ca | 3928 | if (r_symndx < symtab_hdr->sh_info) |
8da6118f KH |
3929 | { |
3930 | sym = local_syms + r_symndx; | |
3931 | sec = local_sections[r_symndx]; | |
c434dee6 | 3932 | |
c25bc9fc L |
3933 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, |
3934 | &sec, rel); | |
1788fc08 | 3935 | st_size = sym->st_size; |
c25bc9fc L |
3936 | |
3937 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 3938 | if (!bfd_link_relocatable (info) |
351f65ca | 3939 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
c25bc9fc | 3940 | { |
351f65ca L |
3941 | h = elf_x86_64_get_local_sym_hash (htab, input_bfd, |
3942 | rel, FALSE); | |
c25bc9fc L |
3943 | if (h == NULL) |
3944 | abort (); | |
3945 | ||
eed180f8 | 3946 | /* Set STT_GNU_IFUNC symbol value. */ |
c25bc9fc L |
3947 | h->root.u.def.value = sym->st_value; |
3948 | h->root.u.def.section = sec; | |
3949 | } | |
8da6118f | 3950 | } |
8d88c4ca | 3951 | else |
8da6118f | 3952 | { |
c9736ba0 | 3953 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 3954 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
c434dee6 | 3955 | |
b2a8e766 AM |
3956 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3957 | r_symndx, symtab_hdr, sym_hashes, | |
3958 | h, sec, relocation, | |
62d887d4 | 3959 | unresolved_reloc, warned, ignored); |
1788fc08 | 3960 | st_size = h->size; |
8da6118f | 3961 | } |
ab96bf03 | 3962 | |
dbaa2011 | 3963 | if (sec != NULL && discarded_section (sec)) |
0672748a | 3964 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 3965 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 3966 | |
0e1862bb | 3967 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
3968 | continue; |
3969 | ||
1788fc08 | 3970 | if (rel->r_addend == 0 && !ABI_64_P (output_bfd)) |
64d25c44 | 3971 | { |
1788fc08 L |
3972 | if (r_type == R_X86_64_64) |
3973 | { | |
3974 | /* For x32, treat R_X86_64_64 like R_X86_64_32 and | |
3975 | zero-extend it to 64bit if addend is zero. */ | |
3976 | r_type = R_X86_64_32; | |
3977 | memset (contents + rel->r_offset + 4, 0, 4); | |
3978 | } | |
3979 | else if (r_type == R_X86_64_SIZE64) | |
3980 | { | |
3981 | /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and | |
3982 | zero-extend it to 64bit if addend is zero. */ | |
3983 | r_type = R_X86_64_SIZE32; | |
3984 | memset (contents + rel->r_offset + 4, 0, 4); | |
3985 | } | |
64d25c44 L |
3986 | } |
3987 | ||
0ff2b86e L |
3988 | eh = (struct elf_x86_64_link_hash_entry *) h; |
3989 | ||
cbe950e9 L |
3990 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
3991 | it here if it is defined in a non-shared object. */ | |
3992 | if (h != NULL | |
3993 | && h->type == STT_GNU_IFUNC | |
3994 | && h->def_regular) | |
3995 | { | |
cbe950e9 | 3996 | bfd_vma plt_index; |
4c544807 | 3997 | const char *name; |
cbe950e9 | 3998 | |
97dc35c8 L |
3999 | if ((input_section->flags & SEC_ALLOC) == 0) |
4000 | { | |
4001 | /* Dynamic relocs are not propagated for SEC_DEBUGGING | |
4002 | sections because such sections are not SEC_ALLOC and | |
4003 | thus ld.so will not process them. */ | |
4004 | if ((input_section->flags & SEC_DEBUGGING) != 0) | |
0eace210 | 4005 | continue; |
97dc35c8 L |
4006 | abort (); |
4007 | } | |
4008 | else if (h->plt.offset == (bfd_vma) -1) | |
cbe950e9 L |
4009 | abort (); |
4010 | ||
4011 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
0ff2b86e L |
4012 | if (htab->elf.splt != NULL) |
4013 | { | |
4014 | if (htab->plt_bnd != NULL) | |
4015 | { | |
4016 | resolved_plt = htab->plt_bnd; | |
4017 | plt_offset = eh->plt_bnd.offset; | |
4018 | } | |
4019 | else | |
4020 | { | |
4021 | resolved_plt = htab->elf.splt; | |
4022 | plt_offset = h->plt.offset; | |
4023 | } | |
4024 | } | |
4025 | else | |
4026 | { | |
4027 | resolved_plt = htab->elf.iplt; | |
4028 | plt_offset = h->plt.offset; | |
4029 | } | |
4030 | ||
4031 | relocation = (resolved_plt->output_section->vma | |
4032 | + resolved_plt->output_offset + plt_offset); | |
cbe950e9 L |
4033 | |
4034 | switch (r_type) | |
4035 | { | |
4036 | default: | |
4c544807 L |
4037 | if (h->root.root.string) |
4038 | name = h->root.root.string; | |
4039 | else | |
4040 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4041 | NULL); | |
cbe950e9 L |
4042 | (*_bfd_error_handler) |
4043 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4044 | "symbol `%s' isn't handled by %s"), input_bfd, | |
4045 | x86_64_elf_howto_table[r_type].name, | |
4c544807 | 4046 | name, __FUNCTION__); |
cbe950e9 L |
4047 | bfd_set_error (bfd_error_bad_value); |
4048 | return FALSE; | |
4049 | ||
4050 | case R_X86_64_32S: | |
0e1862bb | 4051 | if (bfd_link_pic (info)) |
cbe950e9 | 4052 | abort (); |
710ab287 L |
4053 | goto do_relocation; |
4054 | ||
248775ba L |
4055 | case R_X86_64_32: |
4056 | if (ABI_64_P (output_bfd)) | |
4057 | goto do_relocation; | |
17672001 | 4058 | /* FALLTHROUGH */ |
eed180f8 | 4059 | case R_X86_64_64: |
710ab287 L |
4060 | if (rel->r_addend != 0) |
4061 | { | |
4c544807 L |
4062 | if (h->root.root.string) |
4063 | name = h->root.root.string; | |
4064 | else | |
4065 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
4066 | sym, NULL); | |
710ab287 L |
4067 | (*_bfd_error_handler) |
4068 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4069 | "symbol `%s' has non-zero addend: %d"), | |
4070 | input_bfd, x86_64_elf_howto_table[r_type].name, | |
4c544807 | 4071 | name, rel->r_addend); |
710ab287 L |
4072 | bfd_set_error (bfd_error_bad_value); |
4073 | return FALSE; | |
4074 | } | |
4075 | ||
4076 | /* Generate dynamic relcoation only when there is a | |
c293fa49 | 4077 | non-GOT reference in a shared object. */ |
0e1862bb | 4078 | if (bfd_link_pic (info) && h->non_got_ref) |
710ab287 L |
4079 | { |
4080 | Elf_Internal_Rela outrel; | |
710ab287 L |
4081 | asection *sreloc; |
4082 | ||
c25bc9fc L |
4083 | /* Need a dynamic relocation to get the real function |
4084 | address. */ | |
710ab287 L |
4085 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, |
4086 | info, | |
4087 | input_section, | |
4088 | rel->r_offset); | |
4089 | if (outrel.r_offset == (bfd_vma) -1 | |
4090 | || outrel.r_offset == (bfd_vma) -2) | |
4091 | abort (); | |
4092 | ||
4093 | outrel.r_offset += (input_section->output_section->vma | |
4094 | + input_section->output_offset); | |
4095 | ||
4096 | if (h->dynindx == -1 | |
44c4ea11 | 4097 | || h->forced_local |
0e1862bb | 4098 | || bfd_link_executable (info)) |
710ab287 L |
4099 | { |
4100 | /* This symbol is resolved locally. */ | |
56b8aada L |
4101 | outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE); |
4102 | outrel.r_addend = (h->root.u.def.value | |
4103 | + h->root.u.def.section->output_section->vma | |
4104 | + h->root.u.def.section->output_offset); | |
710ab287 L |
4105 | } |
4106 | else | |
4107 | { | |
351f65ca | 4108 | outrel.r_info = htab->r_info (h->dynindx, r_type); |
710ab287 L |
4109 | outrel.r_addend = 0; |
4110 | } | |
4111 | ||
6de2ae4a | 4112 | sreloc = htab->elf.irelifunc; |
351f65ca | 4113 | elf_append_rela (output_bfd, sreloc, &outrel); |
710ab287 L |
4114 | |
4115 | /* If this reloc is against an external symbol, we | |
4116 | do not want to fiddle with the addend. Otherwise, | |
4117 | we need to include the symbol value so that it | |
4118 | becomes an addend for the dynamic reloc. For an | |
4119 | internal symbol, we have updated addend. */ | |
56b8aada | 4120 | continue; |
710ab287 | 4121 | } |
17672001 | 4122 | /* FALLTHROUGH */ |
cbe950e9 | 4123 | case R_X86_64_PC32: |
c3320543 | 4124 | case R_X86_64_PC32_BND: |
cbe950e9 L |
4125 | case R_X86_64_PC64: |
4126 | case R_X86_64_PLT32: | |
c3320543 | 4127 | case R_X86_64_PLT32_BND: |
cbe950e9 L |
4128 | goto do_relocation; |
4129 | ||
4130 | case R_X86_64_GOTPCREL: | |
56ceb5b5 L |
4131 | case R_X86_64_GOTPCRELX: |
4132 | case R_X86_64_REX_GOTPCRELX: | |
cbe950e9 | 4133 | case R_X86_64_GOTPCREL64: |
6de2ae4a | 4134 | base_got = htab->elf.sgot; |
cbe950e9 L |
4135 | off = h->got.offset; |
4136 | ||
7afd84dc | 4137 | if (base_got == NULL) |
cbe950e9 L |
4138 | abort (); |
4139 | ||
7afd84dc | 4140 | if (off == (bfd_vma) -1) |
cbe950e9 | 4141 | { |
7afd84dc L |
4142 | /* We can't use h->got.offset here to save state, or |
4143 | even just remember the offset, as finish_dynamic_symbol | |
4144 | would use that as offset into .got. */ | |
cbe950e9 | 4145 | |
6de2ae4a | 4146 | if (htab->elf.splt != NULL) |
7afd84dc | 4147 | { |
eed180f8 | 4148 | plt_index = h->plt.offset / plt_entry_size - 1; |
7afd84dc | 4149 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
6de2ae4a | 4150 | base_got = htab->elf.sgotplt; |
7afd84dc | 4151 | } |
cbe950e9 L |
4152 | else |
4153 | { | |
eed180f8 | 4154 | plt_index = h->plt.offset / plt_entry_size; |
7afd84dc | 4155 | off = plt_index * GOT_ENTRY_SIZE; |
6de2ae4a | 4156 | base_got = htab->elf.igotplt; |
7afd84dc L |
4157 | } |
4158 | ||
4159 | if (h->dynindx == -1 | |
4160 | || h->forced_local | |
4161 | || info->symbolic) | |
4162 | { | |
eed180f8 | 4163 | /* This references the local defitionion. We must |
7afd84dc | 4164 | initialize this entry in the global offset table. |
eed180f8 | 4165 | Since the offset must always be a multiple of 8, |
7afd84dc L |
4166 | we use the least significant bit to record |
4167 | whether we have initialized it already. | |
4168 | ||
4169 | When doing a dynamic link, we create a .rela.got | |
4170 | relocation entry to initialize the value. This | |
4171 | is done in the finish_dynamic_symbol routine. */ | |
4172 | if ((off & 1) != 0) | |
4173 | off &= ~1; | |
4174 | else | |
4175 | { | |
4176 | bfd_put_64 (output_bfd, relocation, | |
4177 | base_got->contents + off); | |
4178 | /* Note that this is harmless for the GOTPLT64 | |
4179 | case, as -1 | 1 still is -1. */ | |
4180 | h->got.offset |= 1; | |
4181 | } | |
cbe950e9 L |
4182 | } |
4183 | } | |
4184 | ||
4185 | relocation = (base_got->output_section->vma | |
4186 | + base_got->output_offset + off); | |
4187 | ||
cbe950e9 L |
4188 | goto do_relocation; |
4189 | } | |
4190 | } | |
4191 | ||
70256ad8 AJ |
4192 | /* When generating a shared object, the relocations handled here are |
4193 | copied into the output file to be resolved at run time. */ | |
4194 | switch (r_type) | |
4195 | { | |
4196 | case R_X86_64_GOT32: | |
7b81dfbb | 4197 | case R_X86_64_GOT64: |
70256ad8 AJ |
4198 | /* Relocation is to the entry for this symbol in the global |
4199 | offset table. */ | |
70256ad8 | 4200 | case R_X86_64_GOTPCREL: |
56ceb5b5 L |
4201 | case R_X86_64_GOTPCRELX: |
4202 | case R_X86_64_REX_GOTPCRELX: | |
7b81dfbb AJ |
4203 | case R_X86_64_GOTPCREL64: |
4204 | /* Use global offset table entry as symbol value. */ | |
4205 | case R_X86_64_GOTPLT64: | |
553d1284 | 4206 | /* This is obsolete and treated the the same as GOT64. */ |
6de2ae4a | 4207 | base_got = htab->elf.sgot; |
7b81dfbb | 4208 | |
6de2ae4a | 4209 | if (htab->elf.sgot == NULL) |
c434dee6 | 4210 | abort (); |
053579d7 | 4211 | |
51e0a107 | 4212 | if (h != NULL) |
70256ad8 | 4213 | { |
b34976b6 | 4214 | bfd_boolean dyn; |
c434dee6 AJ |
4215 | |
4216 | off = h->got.offset; | |
7b81dfbb | 4217 | if (h->needs_plt |
eed180f8 | 4218 | && h->plt.offset != (bfd_vma)-1 |
7b81dfbb AJ |
4219 | && off == (bfd_vma)-1) |
4220 | { | |
4221 | /* We can't use h->got.offset here to save | |
4222 | state, or even just remember the offset, as | |
4223 | finish_dynamic_symbol would use that as offset into | |
4224 | .got. */ | |
eed180f8 | 4225 | bfd_vma plt_index = h->plt.offset / plt_entry_size - 1; |
7b81dfbb | 4226 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
6de2ae4a | 4227 | base_got = htab->elf.sgotplt; |
7b81dfbb AJ |
4228 | } |
4229 | ||
c434dee6 | 4230 | dyn = htab->elf.dynamic_sections_created; |
51e0a107 | 4231 | |
0e1862bb L |
4232 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
4233 | || (bfd_link_pic (info) | |
27482721 | 4234 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4bc6e03a AJ |
4235 | || (ELF_ST_VISIBILITY (h->other) |
4236 | && h->root.type == bfd_link_hash_undefweak)) | |
51e0a107 JH |
4237 | { |
4238 | /* This is actually a static link, or it is a -Bsymbolic | |
4239 | link and the symbol is defined locally, or the symbol | |
407443a3 | 4240 | was forced to be local because of a version file. We |
51e0a107 JH |
4241 | must initialize this entry in the global offset table. |
4242 | Since the offset must always be a multiple of 8, we | |
4243 | use the least significant bit to record whether we | |
4244 | have initialized it already. | |
4245 | ||
4246 | When doing a dynamic link, we create a .rela.got | |
407443a3 AJ |
4247 | relocation entry to initialize the value. This is |
4248 | done in the finish_dynamic_symbol routine. */ | |
51e0a107 JH |
4249 | if ((off & 1) != 0) |
4250 | off &= ~1; | |
4251 | else | |
4252 | { | |
4253 | bfd_put_64 (output_bfd, relocation, | |
7b81dfbb AJ |
4254 | base_got->contents + off); |
4255 | /* Note that this is harmless for the GOTPLT64 case, | |
eed180f8 | 4256 | as -1 | 1 still is -1. */ |
51e0a107 JH |
4257 | h->got.offset |= 1; |
4258 | } | |
4259 | } | |
053579d7 | 4260 | else |
b34976b6 | 4261 | unresolved_reloc = FALSE; |
70256ad8 | 4262 | } |
51e0a107 JH |
4263 | else |
4264 | { | |
c434dee6 AJ |
4265 | if (local_got_offsets == NULL) |
4266 | abort (); | |
51e0a107 JH |
4267 | |
4268 | off = local_got_offsets[r_symndx]; | |
4269 | ||
4270 | /* The offset must always be a multiple of 8. We use | |
407443a3 AJ |
4271 | the least significant bit to record whether we have |
4272 | already generated the necessary reloc. */ | |
51e0a107 JH |
4273 | if ((off & 1) != 0) |
4274 | off &= ~1; | |
4275 | else | |
4276 | { | |
c434dee6 | 4277 | bfd_put_64 (output_bfd, relocation, |
7b81dfbb | 4278 | base_got->contents + off); |
51e0a107 | 4279 | |
0e1862bb | 4280 | if (bfd_link_pic (info)) |
51e0a107 | 4281 | { |
947216bf | 4282 | asection *s; |
51e0a107 | 4283 | Elf_Internal_Rela outrel; |
70256ad8 | 4284 | |
51e0a107 JH |
4285 | /* We need to generate a R_X86_64_RELATIVE reloc |
4286 | for the dynamic linker. */ | |
6de2ae4a | 4287 | s = htab->elf.srelgot; |
947216bf | 4288 | if (s == NULL) |
c434dee6 | 4289 | abort (); |
51e0a107 | 4290 | |
7b81dfbb AJ |
4291 | outrel.r_offset = (base_got->output_section->vma |
4292 | + base_got->output_offset | |
51e0a107 | 4293 | + off); |
351f65ca | 4294 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
51e0a107 | 4295 | outrel.r_addend = relocation; |
351f65ca | 4296 | elf_append_rela (output_bfd, s, &outrel); |
51e0a107 JH |
4297 | } |
4298 | ||
4299 | local_got_offsets[r_symndx] |= 1; | |
4300 | } | |
51e0a107 | 4301 | } |
6a2bda3f | 4302 | |
c434dee6 AJ |
4303 | if (off >= (bfd_vma) -2) |
4304 | abort (); | |
4305 | ||
7b81dfbb AJ |
4306 | relocation = base_got->output_section->vma |
4307 | + base_got->output_offset + off; | |
56ceb5b5 L |
4308 | if (r_type != R_X86_64_GOTPCREL |
4309 | && r_type != R_X86_64_GOTPCRELX | |
4310 | && r_type != R_X86_64_REX_GOTPCRELX | |
4311 | && r_type != R_X86_64_GOTPCREL64) | |
6de2ae4a L |
4312 | relocation -= htab->elf.sgotplt->output_section->vma |
4313 | - htab->elf.sgotplt->output_offset; | |
c434dee6 | 4314 | |
70256ad8 AJ |
4315 | break; |
4316 | ||
d6ab8113 JB |
4317 | case R_X86_64_GOTOFF64: |
4318 | /* Relocation is relative to the start of the global offset | |
4319 | table. */ | |
4320 | ||
3d949995 L |
4321 | /* Check to make sure it isn't a protected function or data |
4322 | symbol for shared library since it may not be local when | |
e3c0e327 L |
4323 | used as function address or with copy relocation. We also |
4324 | need to make sure that a symbol is referenced locally. */ | |
0e1862bb | 4325 | if (bfd_link_pic (info) && h) |
d6ab8113 | 4326 | { |
e3c0e327 L |
4327 | if (!h->def_regular) |
4328 | { | |
4329 | const char *v; | |
4330 | ||
4331 | switch (ELF_ST_VISIBILITY (h->other)) | |
4332 | { | |
4333 | case STV_HIDDEN: | |
4334 | v = _("hidden symbol"); | |
4335 | break; | |
4336 | case STV_INTERNAL: | |
4337 | v = _("internal symbol"); | |
4338 | break; | |
4339 | case STV_PROTECTED: | |
4340 | v = _("protected symbol"); | |
4341 | break; | |
4342 | default: | |
4343 | v = _("symbol"); | |
4344 | break; | |
4345 | } | |
4346 | ||
4347 | (*_bfd_error_handler) | |
4348 | (_("%B: relocation R_X86_64_GOTOFF64 against undefined %s `%s' can not be used when making a shared object"), | |
4349 | input_bfd, v, h->root.root.string); | |
4350 | bfd_set_error (bfd_error_bad_value); | |
4351 | return FALSE; | |
4352 | } | |
0e1862bb | 4353 | else if (!bfd_link_executable (info) |
e3c0e327 L |
4354 | && !SYMBOL_REFERENCES_LOCAL (info, h) |
4355 | && (h->type == STT_FUNC | |
4356 | || h->type == STT_OBJECT) | |
4357 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
4358 | { | |
4359 | (*_bfd_error_handler) | |
4360 | (_("%B: relocation R_X86_64_GOTOFF64 against protected %s `%s' can not be used when making a shared object"), | |
4361 | input_bfd, | |
4362 | h->type == STT_FUNC ? "function" : "data", | |
4363 | h->root.root.string); | |
4364 | bfd_set_error (bfd_error_bad_value); | |
d6ab8113 | 4365 | return FALSE; |
e3c0e327 | 4366 | } |
d6ab8113 JB |
4367 | } |
4368 | ||
4369 | /* Note that sgot is not involved in this | |
4370 | calculation. We always want the start of .got.plt. If we | |
4371 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
4372 | permitted by the ABI, we might have to change this | |
4373 | calculation. */ | |
6de2ae4a L |
4374 | relocation -= htab->elf.sgotplt->output_section->vma |
4375 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
4376 | break; |
4377 | ||
4378 | case R_X86_64_GOTPC32: | |
7b81dfbb | 4379 | case R_X86_64_GOTPC64: |
d6ab8113 | 4380 | /* Use global offset table as symbol value. */ |
6de2ae4a L |
4381 | relocation = htab->elf.sgotplt->output_section->vma |
4382 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
4383 | unresolved_reloc = FALSE; |
4384 | break; | |
7b81dfbb AJ |
4385 | |
4386 | case R_X86_64_PLTOFF64: | |
4387 | /* Relocation is PLT entry relative to GOT. For local | |
4388 | symbols it's the symbol itself relative to GOT. */ | |
eed180f8 | 4389 | if (h != NULL |
7b81dfbb AJ |
4390 | /* See PLT32 handling. */ |
4391 | && h->plt.offset != (bfd_vma) -1 | |
6de2ae4a | 4392 | && htab->elf.splt != NULL) |
7b81dfbb | 4393 | { |
0ff2b86e L |
4394 | if (htab->plt_bnd != NULL) |
4395 | { | |
4396 | resolved_plt = htab->plt_bnd; | |
4397 | plt_offset = eh->plt_bnd.offset; | |
4398 | } | |
4399 | else | |
4400 | { | |
4401 | resolved_plt = htab->elf.splt; | |
4402 | plt_offset = h->plt.offset; | |
4403 | } | |
4404 | ||
4405 | relocation = (resolved_plt->output_section->vma | |
4406 | + resolved_plt->output_offset | |
4407 | + plt_offset); | |
7b81dfbb AJ |
4408 | unresolved_reloc = FALSE; |
4409 | } | |
4410 | ||
6de2ae4a L |
4411 | relocation -= htab->elf.sgotplt->output_section->vma |
4412 | + htab->elf.sgotplt->output_offset; | |
7b81dfbb | 4413 | break; |
d6ab8113 | 4414 | |
70256ad8 | 4415 | case R_X86_64_PLT32: |
c3320543 | 4416 | case R_X86_64_PLT32_BND: |
70256ad8 AJ |
4417 | /* Relocation is to the entry for this symbol in the |
4418 | procedure linkage table. */ | |
4419 | ||
4420 | /* Resolve a PLT32 reloc against a local symbol directly, | |
407443a3 | 4421 | without using the procedure linkage table. */ |
70256ad8 AJ |
4422 | if (h == NULL) |
4423 | break; | |
4424 | ||
dd7e64d4 L |
4425 | if ((h->plt.offset == (bfd_vma) -1 |
4426 | && eh->plt_got.offset == (bfd_vma) -1) | |
6de2ae4a | 4427 | || htab->elf.splt == NULL) |
70256ad8 AJ |
4428 | { |
4429 | /* We didn't make a PLT entry for this symbol. This | |
407443a3 AJ |
4430 | happens when statically linking PIC code, or when |
4431 | using -Bsymbolic. */ | |
70256ad8 AJ |
4432 | break; |
4433 | } | |
4434 | ||
dd7e64d4 | 4435 | if (h->plt.offset != (bfd_vma) -1) |
0ff2b86e | 4436 | { |
dd7e64d4 L |
4437 | if (htab->plt_bnd != NULL) |
4438 | { | |
4439 | resolved_plt = htab->plt_bnd; | |
4440 | plt_offset = eh->plt_bnd.offset; | |
4441 | } | |
4442 | else | |
4443 | { | |
4444 | resolved_plt = htab->elf.splt; | |
4445 | plt_offset = h->plt.offset; | |
4446 | } | |
0ff2b86e L |
4447 | } |
4448 | else | |
4449 | { | |
dd7e64d4 L |
4450 | /* Use the GOT PLT. */ |
4451 | resolved_plt = htab->plt_got; | |
4452 | plt_offset = eh->plt_got.offset; | |
0ff2b86e L |
4453 | } |
4454 | ||
4455 | relocation = (resolved_plt->output_section->vma | |
4456 | + resolved_plt->output_offset | |
4457 | + plt_offset); | |
b34976b6 | 4458 | unresolved_reloc = FALSE; |
70256ad8 AJ |
4459 | break; |
4460 | ||
1788fc08 L |
4461 | case R_X86_64_SIZE32: |
4462 | case R_X86_64_SIZE64: | |
1788fc08 L |
4463 | /* Set to symbol size. */ |
4464 | relocation = st_size; | |
4465 | goto direct; | |
4466 | ||
fd8ab9e5 AJ |
4467 | case R_X86_64_PC8: |
4468 | case R_X86_64_PC16: | |
4469 | case R_X86_64_PC32: | |
c3320543 | 4470 | case R_X86_64_PC32_BND: |
6333bc0d L |
4471 | /* Don't complain about -fPIC if the symbol is undefined when |
4472 | building executable. */ | |
0e1862bb | 4473 | if (bfd_link_pic (info) |
ba3bee0b | 4474 | && (input_section->flags & SEC_ALLOC) != 0 |
90f487df | 4475 | && (input_section->flags & SEC_READONLY) != 0 |
6333bc0d | 4476 | && h != NULL |
0e1862bb | 4477 | && !(bfd_link_executable (info) |
6333bc0d | 4478 | && h->root.type == bfd_link_hash_undefined)) |
6610a52d | 4479 | { |
41bed6dd L |
4480 | bfd_boolean fail = FALSE; |
4481 | bfd_boolean branch | |
c3320543 L |
4482 | = ((r_type == R_X86_64_PC32 |
4483 | || r_type == R_X86_64_PC32_BND) | |
41bed6dd L |
4484 | && is_32bit_relative_branch (contents, rel->r_offset)); |
4485 | ||
4486 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
4487 | { | |
4488 | /* Symbol is referenced locally. Make sure it is | |
4489 | defined locally or for a branch. */ | |
4490 | fail = !h->def_regular && !branch; | |
4491 | } | |
0e1862bb | 4492 | else if (!(bfd_link_executable (info) |
bc696fd5 | 4493 | && (h->needs_copy || eh->needs_copy))) |
41bed6dd | 4494 | { |
9a926d55 L |
4495 | /* Symbol doesn't need copy reloc and isn't referenced |
4496 | locally. We only allow branch to symbol with | |
4497 | non-default visibility. */ | |
41bed6dd L |
4498 | fail = (!branch |
4499 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT); | |
4500 | } | |
4501 | ||
4502 | if (fail) | |
4503 | { | |
4504 | const char *fmt; | |
4505 | const char *v; | |
4506 | const char *pic = ""; | |
4507 | ||
4508 | switch (ELF_ST_VISIBILITY (h->other)) | |
4509 | { | |
4510 | case STV_HIDDEN: | |
4511 | v = _("hidden symbol"); | |
4512 | break; | |
4513 | case STV_INTERNAL: | |
4514 | v = _("internal symbol"); | |
4515 | break; | |
4516 | case STV_PROTECTED: | |
4517 | v = _("protected symbol"); | |
4518 | break; | |
4519 | default: | |
4520 | v = _("symbol"); | |
4521 | pic = _("; recompile with -fPIC"); | |
4522 | break; | |
4523 | } | |
4524 | ||
4525 | if (h->def_regular) | |
4526 | fmt = _("%B: relocation %s against %s `%s' can not be used when making a shared object%s"); | |
4527 | else | |
4528 | fmt = _("%B: relocation %s against undefined %s `%s' can not be used when making a shared object%s"); | |
4529 | ||
4530 | (*_bfd_error_handler) (fmt, input_bfd, | |
4531 | x86_64_elf_howto_table[r_type].name, | |
4532 | v, h->root.root.string, pic); | |
4533 | bfd_set_error (bfd_error_bad_value); | |
4534 | return FALSE; | |
4535 | } | |
6610a52d L |
4536 | } |
4537 | /* Fall through. */ | |
4538 | ||
70256ad8 AJ |
4539 | case R_X86_64_8: |
4540 | case R_X86_64_16: | |
4541 | case R_X86_64_32: | |
d6ab8113 | 4542 | case R_X86_64_PC64: |
6b3db546 | 4543 | case R_X86_64_64: |
80643fbc | 4544 | /* FIXME: The ABI says the linker should make sure the value is |
407443a3 | 4545 | the same when it's zeroextended to 64 bit. */ |
c434dee6 | 4546 | |
1788fc08 | 4547 | direct: |
b1e24c02 | 4548 | if ((input_section->flags & SEC_ALLOC) == 0) |
c434dee6 AJ |
4549 | break; |
4550 | ||
9a926d55 | 4551 | /* Don't copy a pc-relative relocation into the output file |
6333bc0d | 4552 | if the symbol needs copy reloc or the symbol is undefined |
04ebc307 L |
4553 | when building executable. Copy dynamic function pointer |
4554 | relocations. */ | |
0e1862bb L |
4555 | if ((bfd_link_pic (info) |
4556 | && !(bfd_link_executable (info) | |
fd9edc90 | 4557 | && h != NULL |
6333bc0d L |
4558 | && (h->needs_copy |
4559 | || eh->needs_copy | |
4560 | || h->root.type == bfd_link_hash_undefined) | |
9a926d55 | 4561 | && IS_X86_64_PCREL_TYPE (r_type)) |
4bc6e03a AJ |
4562 | && (h == NULL |
4563 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
4564 | || h->root.type != bfd_link_hash_undefweak) | |
1788fc08 L |
4565 | && ((! IS_X86_64_PCREL_TYPE (r_type) |
4566 | && r_type != R_X86_64_SIZE32 | |
4567 | && r_type != R_X86_64_SIZE64) | |
d8045f23 | 4568 | || ! SYMBOL_CALLS_LOCAL (info, h))) |
d40d037c | 4569 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 4570 | && !bfd_link_pic (info) |
c434dee6 AJ |
4571 | && h != NULL |
4572 | && h->dynindx != -1 | |
04ebc307 | 4573 | && (!h->non_got_ref || eh->func_pointer_refcount > 0) |
f5385ebf AM |
4574 | && ((h->def_dynamic |
4575 | && !h->def_regular) | |
c434dee6 | 4576 | || h->root.type == bfd_link_hash_undefweak |
0f88be7a | 4577 | || h->root.type == bfd_link_hash_undefined))) |
70256ad8 AJ |
4578 | { |
4579 | Elf_Internal_Rela outrel; | |
b34976b6 | 4580 | bfd_boolean skip, relocate; |
c434dee6 | 4581 | asection *sreloc; |
70256ad8 AJ |
4582 | |
4583 | /* When generating a shared object, these relocations | |
4584 | are copied into the output file to be resolved at run | |
407443a3 | 4585 | time. */ |
b34976b6 AM |
4586 | skip = FALSE; |
4587 | relocate = FALSE; | |
70256ad8 | 4588 | |
c629eae0 JJ |
4589 | outrel.r_offset = |
4590 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
c434dee6 | 4591 | rel->r_offset); |
c629eae0 | 4592 | if (outrel.r_offset == (bfd_vma) -1) |
b34976b6 | 4593 | skip = TRUE; |
0fb19cbc | 4594 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 4595 | skip = TRUE, relocate = TRUE; |
70256ad8 AJ |
4596 | |
4597 | outrel.r_offset += (input_section->output_section->vma | |
4598 | + input_section->output_offset); | |
4599 | ||
4600 | if (skip) | |
0bb2d96a | 4601 | memset (&outrel, 0, sizeof outrel); |
c434dee6 | 4602 | |
fd8ab9e5 AJ |
4603 | /* h->dynindx may be -1 if this symbol was marked to |
4604 | become local. */ | |
4605 | else if (h != NULL | |
c434dee6 | 4606 | && h->dynindx != -1 |
d8045f23 | 4607 | && (IS_X86_64_PCREL_TYPE (r_type) |
0e1862bb | 4608 | || ! bfd_link_pic (info) |
d8045f23 NC |
4609 | || ! SYMBOLIC_BIND (info, h) |
4610 | || ! h->def_regular)) | |
70256ad8 | 4611 | { |
351f65ca | 4612 | outrel.r_info = htab->r_info (h->dynindx, r_type); |
c434dee6 | 4613 | outrel.r_addend = rel->r_addend; |
70256ad8 AJ |
4614 | } |
4615 | else | |
4616 | { | |
c434dee6 | 4617 | /* This symbol is local, or marked to become local. */ |
248775ba | 4618 | if (r_type == htab->pointer_r_type) |
607c0e09 | 4619 | { |
b34976b6 | 4620 | relocate = TRUE; |
351f65ca | 4621 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
607c0e09 AS |
4622 | outrel.r_addend = relocation + rel->r_addend; |
4623 | } | |
64d25c44 L |
4624 | else if (r_type == R_X86_64_64 |
4625 | && !ABI_64_P (output_bfd)) | |
4626 | { | |
4627 | relocate = TRUE; | |
4628 | outrel.r_info = htab->r_info (0, | |
4629 | R_X86_64_RELATIVE64); | |
4630 | outrel.r_addend = relocation + rel->r_addend; | |
8cf0d2dd L |
4631 | /* Check addend overflow. */ |
4632 | if ((outrel.r_addend & 0x80000000) | |
4633 | != (rel->r_addend & 0x80000000)) | |
4634 | { | |
4635 | const char *name; | |
268a8d3a | 4636 | int addend = rel->r_addend; |
8cf0d2dd L |
4637 | if (h && h->root.root.string) |
4638 | name = h->root.root.string; | |
4639 | else | |
4640 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
4641 | sym, NULL); | |
6f2c9068 L |
4642 | if (addend < 0) |
4643 | (*_bfd_error_handler) | |
268a8d3a | 4644 | (_("%B: addend -0x%x in relocation %s against " |
6f2c9068 L |
4645 | "symbol `%s' at 0x%lx in section `%A' is " |
4646 | "out of range"), | |
4647 | input_bfd, input_section, addend, | |
4648 | x86_64_elf_howto_table[r_type].name, | |
4649 | name, (unsigned long) rel->r_offset); | |
4650 | else | |
4651 | (*_bfd_error_handler) | |
268a8d3a | 4652 | (_("%B: addend 0x%x in relocation %s against " |
6f2c9068 L |
4653 | "symbol `%s' at 0x%lx in section `%A' is " |
4654 | "out of range"), | |
4655 | input_bfd, input_section, addend, | |
4656 | x86_64_elf_howto_table[r_type].name, | |
4657 | name, (unsigned long) rel->r_offset); | |
8cf0d2dd L |
4658 | bfd_set_error (bfd_error_bad_value); |
4659 | return FALSE; | |
4660 | } | |
64d25c44 | 4661 | } |
607c0e09 AS |
4662 | else |
4663 | { | |
4664 | long sindx; | |
4665 | ||
8517fae7 | 4666 | if (bfd_is_abs_section (sec)) |
607c0e09 AS |
4667 | sindx = 0; |
4668 | else if (sec == NULL || sec->owner == NULL) | |
4669 | { | |
4670 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 4671 | return FALSE; |
607c0e09 AS |
4672 | } |
4673 | else | |
4674 | { | |
4675 | asection *osec; | |
4676 | ||
74541ad4 AM |
4677 | /* We are turning this relocation into one |
4678 | against a section symbol. It would be | |
4679 | proper to subtract the symbol's value, | |
4680 | osec->vma, from the emitted reloc addend, | |
4681 | but ld.so expects buggy relocs. */ | |
607c0e09 AS |
4682 | osec = sec->output_section; |
4683 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
4684 | if (sindx == 0) |
4685 | { | |
4686 | asection *oi = htab->elf.text_index_section; | |
4687 | sindx = elf_section_data (oi)->dynindx; | |
4688 | } | |
4689 | BFD_ASSERT (sindx != 0); | |
607c0e09 AS |
4690 | } |
4691 | ||
351f65ca | 4692 | outrel.r_info = htab->r_info (sindx, r_type); |
607c0e09 AS |
4693 | outrel.r_addend = relocation + rel->r_addend; |
4694 | } | |
70256ad8 AJ |
4695 | } |
4696 | ||
cbe950e9 | 4697 | sreloc = elf_section_data (input_section)->sreloc; |
d8045f23 | 4698 | |
62d78908 L |
4699 | if (sreloc == NULL || sreloc->contents == NULL) |
4700 | { | |
4701 | r = bfd_reloc_notsupported; | |
4702 | goto check_relocation_error; | |
4703 | } | |
c434dee6 | 4704 | |
351f65ca | 4705 | elf_append_rela (output_bfd, sreloc, &outrel); |
70256ad8 AJ |
4706 | |
4707 | /* If this reloc is against an external symbol, we do | |
4708 | not want to fiddle with the addend. Otherwise, we | |
4709 | need to include the symbol value so that it becomes | |
4710 | an addend for the dynamic reloc. */ | |
0f88be7a | 4711 | if (! relocate) |
70256ad8 AJ |
4712 | continue; |
4713 | } | |
4714 | ||
4715 | break; | |
4716 | ||
bffbf940 | 4717 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
4718 | case R_X86_64_GOTPC32_TLSDESC: |
4719 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 4720 | case R_X86_64_GOTTPOFF: |
bffbf940 JJ |
4721 | tls_type = GOT_UNKNOWN; |
4722 | if (h == NULL && local_got_offsets) | |
351f65ca | 4723 | tls_type = elf_x86_64_local_got_tls_type (input_bfd) [r_symndx]; |
bffbf940 | 4724 | else if (h != NULL) |
351f65ca | 4725 | tls_type = elf_x86_64_hash_entry (h)->tls_type; |
142411ca | 4726 | |
351f65ca L |
4727 | if (! elf_x86_64_tls_transition (info, input_bfd, |
4728 | input_section, contents, | |
4729 | symtab_hdr, sym_hashes, | |
4730 | &r_type, tls_type, rel, | |
4731 | relend, h, r_symndx)) | |
534a31f6 | 4732 | return FALSE; |
bffbf940 JJ |
4733 | |
4734 | if (r_type == R_X86_64_TPOFF32) | |
4735 | { | |
142411ca L |
4736 | bfd_vma roff = rel->r_offset; |
4737 | ||
bffbf940 | 4738 | BFD_ASSERT (! unresolved_reloc); |
142411ca | 4739 | |
351f65ca | 4740 | if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD) |
bffbf940 | 4741 | { |
52bc799a | 4742 | /* GD->LE transition. For 64bit, change |
abcf1d52 | 4743 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
a3fadc9a | 4744 | .word 0x6666; rex64; call __tls_get_addr |
52bc799a | 4745 | into: |
bffbf940 | 4746 | movq %fs:0, %rax |
52bc799a L |
4747 | leaq foo@tpoff(%rax), %rax |
4748 | For 32bit, change | |
4749 | leaq foo@tlsgd(%rip), %rdi | |
4750 | .word 0x6666; rex64; call __tls_get_addr | |
4751 | into: | |
4752 | movl %fs:0, %eax | |
5c98a14e JJ |
4753 | leaq foo@tpoff(%rax), %rax |
4754 | For largepic, change: | |
4755 | leaq foo@tlsgd(%rip), %rdi | |
4756 | movabsq $__tls_get_addr@pltoff, %rax | |
4757 | addq %rbx, %rax | |
4758 | call *%rax | |
4759 | into: | |
4760 | movq %fs:0, %rax | |
4761 | leaq foo@tpoff(%rax), %rax | |
4762 | nopw 0x0(%rax,%rax,1) */ | |
4763 | int largepic = 0; | |
4764 | if (ABI_64_P (output_bfd) | |
4765 | && contents[roff + 5] == (bfd_byte) '\xb8') | |
4766 | { | |
4767 | memcpy (contents + roff - 3, | |
4768 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80" | |
4769 | "\0\0\0\0\x66\x0f\x1f\x44\0", 22); | |
4770 | largepic = 1; | |
4771 | } | |
4772 | else if (ABI_64_P (output_bfd)) | |
52bc799a L |
4773 | memcpy (contents + roff - 4, |
4774 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", | |
4775 | 16); | |
4776 | else | |
4777 | memcpy (contents + roff - 3, | |
4778 | "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", | |
4779 | 15); | |
eb4ff4d6 | 4780 | bfd_put_32 (output_bfd, |
351f65ca | 4781 | elf_x86_64_tpoff (info, relocation), |
5c98a14e JJ |
4782 | contents + roff + 8 + largepic); |
4783 | /* Skip R_X86_64_PC32/R_X86_64_PLT32/R_X86_64_PLTOFF64. */ | |
bffbf940 JJ |
4784 | rel++; |
4785 | continue; | |
4786 | } | |
351f65ca | 4787 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC) |
67a4f2b7 AO |
4788 | { |
4789 | /* GDesc -> LE transition. | |
4790 | It's originally something like: | |
4791 | leaq x@tlsdesc(%rip), %rax | |
4792 | ||
4793 | Change it to: | |
c9736ba0 | 4794 | movl $x@tpoff, %rax. */ |
67a4f2b7 | 4795 | |
c9736ba0 | 4796 | unsigned int val, type; |
67a4f2b7 | 4797 | |
67a4f2b7 | 4798 | type = bfd_get_8 (input_bfd, contents + roff - 3); |
67a4f2b7 | 4799 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
4800 | bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1), |
4801 | contents + roff - 3); | |
4802 | bfd_put_8 (output_bfd, 0xc7, contents + roff - 2); | |
4803 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
4804 | contents + roff - 1); | |
eb4ff4d6 | 4805 | bfd_put_32 (output_bfd, |
351f65ca | 4806 | elf_x86_64_tpoff (info, relocation), |
67a4f2b7 AO |
4807 | contents + roff); |
4808 | continue; | |
4809 | } | |
351f65ca | 4810 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL) |
67a4f2b7 AO |
4811 | { |
4812 | /* GDesc -> LE transition. | |
4813 | It's originally: | |
4814 | call *(%rax) | |
4815 | Turn it into: | |
142411ca | 4816 | xchg %ax,%ax. */ |
10efb593 | 4817 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
4818 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
4819 | continue; | |
4820 | } | |
351f65ca | 4821 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTTPOFF) |
bffbf940 | 4822 | { |
bffbf940 | 4823 | /* IE->LE transition: |
cf61b747 | 4824 | For 64bit, originally it can be one of: |
bffbf940 JJ |
4825 | movq foo@gottpoff(%rip), %reg |
4826 | addq foo@gottpoff(%rip), %reg | |
4827 | We change it into: | |
4828 | movq $foo, %reg | |
4829 | leaq foo(%reg), %reg | |
cf61b747 L |
4830 | addq $foo, %reg. |
4831 | For 32bit, originally it can be one of: | |
4832 | movq foo@gottpoff(%rip), %reg | |
4833 | addl foo@gottpoff(%rip), %reg | |
4834 | We change it into: | |
4835 | movq $foo, %reg | |
4836 | leal foo(%reg), %reg | |
4837 | addl $foo, %reg. */ | |
142411ca L |
4838 | |
4839 | unsigned int val, type, reg; | |
4840 | ||
cf61b747 L |
4841 | if (roff >= 3) |
4842 | val = bfd_get_8 (input_bfd, contents + roff - 3); | |
4843 | else | |
4844 | val = 0; | |
142411ca L |
4845 | type = bfd_get_8 (input_bfd, contents + roff - 2); |
4846 | reg = bfd_get_8 (input_bfd, contents + roff - 1); | |
bffbf940 | 4847 | reg >>= 3; |
bffbf940 JJ |
4848 | if (type == 0x8b) |
4849 | { | |
4850 | /* movq */ | |
4851 | if (val == 0x4c) | |
4852 | bfd_put_8 (output_bfd, 0x49, | |
142411ca | 4853 | contents + roff - 3); |
4a4c5f25 L |
4854 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
4855 | bfd_put_8 (output_bfd, 0x41, | |
4856 | contents + roff - 3); | |
bffbf940 | 4857 | bfd_put_8 (output_bfd, 0xc7, |
142411ca | 4858 | contents + roff - 2); |
bffbf940 | 4859 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 4860 | contents + roff - 1); |
bffbf940 JJ |
4861 | } |
4862 | else if (reg == 4) | |
4863 | { | |
cf61b747 L |
4864 | /* addq/addl -> addq/addl - addressing with %rsp/%r12 |
4865 | is special */ | |
bffbf940 JJ |
4866 | if (val == 0x4c) |
4867 | bfd_put_8 (output_bfd, 0x49, | |
142411ca | 4868 | contents + roff - 3); |
4a4c5f25 L |
4869 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
4870 | bfd_put_8 (output_bfd, 0x41, | |
4871 | contents + roff - 3); | |
bffbf940 | 4872 | bfd_put_8 (output_bfd, 0x81, |
142411ca | 4873 | contents + roff - 2); |
bffbf940 | 4874 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 4875 | contents + roff - 1); |
bffbf940 JJ |
4876 | } |
4877 | else | |
4878 | { | |
cf61b747 | 4879 | /* addq/addl -> leaq/leal */ |
bffbf940 JJ |
4880 | if (val == 0x4c) |
4881 | bfd_put_8 (output_bfd, 0x4d, | |
142411ca | 4882 | contents + roff - 3); |
4a4c5f25 L |
4883 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
4884 | bfd_put_8 (output_bfd, 0x45, | |
4885 | contents + roff - 3); | |
bffbf940 | 4886 | bfd_put_8 (output_bfd, 0x8d, |
142411ca | 4887 | contents + roff - 2); |
bffbf940 | 4888 | bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3), |
142411ca | 4889 | contents + roff - 1); |
bffbf940 | 4890 | } |
eb4ff4d6 | 4891 | bfd_put_32 (output_bfd, |
351f65ca | 4892 | elf_x86_64_tpoff (info, relocation), |
142411ca | 4893 | contents + roff); |
bffbf940 JJ |
4894 | continue; |
4895 | } | |
142411ca L |
4896 | else |
4897 | BFD_ASSERT (FALSE); | |
bffbf940 JJ |
4898 | } |
4899 | ||
6de2ae4a | 4900 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
4901 | abort (); |
4902 | ||
4903 | if (h != NULL) | |
67a4f2b7 AO |
4904 | { |
4905 | off = h->got.offset; | |
351f65ca | 4906 | offplt = elf_x86_64_hash_entry (h)->tlsdesc_got; |
67a4f2b7 | 4907 | } |
bffbf940 JJ |
4908 | else |
4909 | { | |
4910 | if (local_got_offsets == NULL) | |
4911 | abort (); | |
4912 | ||
4913 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 4914 | offplt = local_tlsdesc_gotents[r_symndx]; |
bffbf940 JJ |
4915 | } |
4916 | ||
4917 | if ((off & 1) != 0) | |
4918 | off &= ~1; | |
26e41594 | 4919 | else |
bffbf940 JJ |
4920 | { |
4921 | Elf_Internal_Rela outrel; | |
bffbf940 | 4922 | int dr_type, indx; |
67a4f2b7 | 4923 | asection *sreloc; |
bffbf940 | 4924 | |
6de2ae4a | 4925 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
4926 | abort (); |
4927 | ||
67a4f2b7 AO |
4928 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
4929 | ||
4930 | if (GOT_TLS_GDESC_P (tls_type)) | |
4931 | { | |
351f65ca | 4932 | outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC); |
67a4f2b7 | 4933 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt |
6de2ae4a L |
4934 | + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size); |
4935 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
4936 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
4937 | + offplt |
4938 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 4939 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 4940 | if (indx == 0) |
351f65ca | 4941 | outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info); |
67a4f2b7 AO |
4942 | else |
4943 | outrel.r_addend = 0; | |
351f65ca | 4944 | elf_append_rela (output_bfd, sreloc, &outrel); |
67a4f2b7 AO |
4945 | } |
4946 | ||
6de2ae4a | 4947 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 4948 | |
6de2ae4a L |
4949 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
4950 | + htab->elf.sgot->output_offset + off); | |
bffbf940 | 4951 | |
67a4f2b7 | 4952 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 | 4953 | dr_type = R_X86_64_DTPMOD64; |
67a4f2b7 AO |
4954 | else if (GOT_TLS_GDESC_P (tls_type)) |
4955 | goto dr_done; | |
bffbf940 JJ |
4956 | else |
4957 | dr_type = R_X86_64_TPOFF64; | |
4958 | ||
6de2ae4a | 4959 | bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off); |
bffbf940 | 4960 | outrel.r_addend = 0; |
67a4f2b7 AO |
4961 | if ((dr_type == R_X86_64_TPOFF64 |
4962 | || dr_type == R_X86_64_TLSDESC) && indx == 0) | |
351f65ca L |
4963 | outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info); |
4964 | outrel.r_info = htab->r_info (indx, dr_type); | |
bffbf940 | 4965 | |
351f65ca | 4966 | elf_append_rela (output_bfd, sreloc, &outrel); |
bffbf940 | 4967 | |
67a4f2b7 | 4968 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 JJ |
4969 | { |
4970 | if (indx == 0) | |
4971 | { | |
d40d037c | 4972 | BFD_ASSERT (! unresolved_reloc); |
bffbf940 | 4973 | bfd_put_64 (output_bfd, |
351f65ca | 4974 | relocation - elf_x86_64_dtpoff_base (info), |
6de2ae4a | 4975 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
bffbf940 JJ |
4976 | } |
4977 | else | |
4978 | { | |
4979 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 4980 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
351f65ca | 4981 | outrel.r_info = htab->r_info (indx, |
bffbf940 JJ |
4982 | R_X86_64_DTPOFF64); |
4983 | outrel.r_offset += GOT_ENTRY_SIZE; | |
351f65ca | 4984 | elf_append_rela (output_bfd, sreloc, |
464d3bd4 | 4985 | &outrel); |
bffbf940 JJ |
4986 | } |
4987 | } | |
4988 | ||
67a4f2b7 | 4989 | dr_done: |
bffbf940 JJ |
4990 | if (h != NULL) |
4991 | h->got.offset |= 1; | |
4992 | else | |
4993 | local_got_offsets[r_symndx] |= 1; | |
4994 | } | |
4995 | ||
67a4f2b7 AO |
4996 | if (off >= (bfd_vma) -2 |
4997 | && ! GOT_TLS_GDESC_P (tls_type)) | |
bffbf940 | 4998 | abort (); |
351f65ca | 4999 | if (r_type == ELF32_R_TYPE (rel->r_info)) |
bffbf940 | 5000 | { |
67a4f2b7 AO |
5001 | if (r_type == R_X86_64_GOTPC32_TLSDESC |
5002 | || r_type == R_X86_64_TLSDESC_CALL) | |
6de2ae4a L |
5003 | relocation = htab->elf.sgotplt->output_section->vma |
5004 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
5005 | + offplt + htab->sgotplt_jump_table_size; |
5006 | else | |
6de2ae4a L |
5007 | relocation = htab->elf.sgot->output_section->vma |
5008 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 5009 | unresolved_reloc = FALSE; |
bffbf940 | 5010 | } |
142411ca | 5011 | else |
67a4f2b7 | 5012 | { |
142411ca | 5013 | bfd_vma roff = rel->r_offset; |
67a4f2b7 | 5014 | |
351f65ca | 5015 | if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD) |
142411ca | 5016 | { |
52bc799a | 5017 | /* GD->IE transition. For 64bit, change |
142411ca L |
5018 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
5019 | .word 0x6666; rex64; call __tls_get_addr@plt | |
52bc799a | 5020 | into: |
142411ca | 5021 | movq %fs:0, %rax |
52bc799a L |
5022 | addq foo@gottpoff(%rip), %rax |
5023 | For 32bit, change | |
5024 | leaq foo@tlsgd(%rip), %rdi | |
5025 | .word 0x6666; rex64; call __tls_get_addr@plt | |
5026 | into: | |
5027 | movl %fs:0, %eax | |
5c98a14e JJ |
5028 | addq foo@gottpoff(%rip), %rax |
5029 | For largepic, change: | |
5030 | leaq foo@tlsgd(%rip), %rdi | |
5031 | movabsq $__tls_get_addr@pltoff, %rax | |
5032 | addq %rbx, %rax | |
5033 | call *%rax | |
5034 | into: | |
5035 | movq %fs:0, %rax | |
5036 | addq foo@gottpoff(%rax), %rax | |
5037 | nopw 0x0(%rax,%rax,1) */ | |
5038 | int largepic = 0; | |
5039 | if (ABI_64_P (output_bfd) | |
5040 | && contents[roff + 5] == (bfd_byte) '\xb8') | |
5041 | { | |
5042 | memcpy (contents + roff - 3, | |
5043 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05" | |
5044 | "\0\0\0\0\x66\x0f\x1f\x44\0", 22); | |
5045 | largepic = 1; | |
5046 | } | |
5047 | else if (ABI_64_P (output_bfd)) | |
52bc799a L |
5048 | memcpy (contents + roff - 4, |
5049 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
5050 | 16); | |
5051 | else | |
5052 | memcpy (contents + roff - 3, | |
5053 | "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
5054 | 15); | |
142411ca | 5055 | |
6de2ae4a L |
5056 | relocation = (htab->elf.sgot->output_section->vma |
5057 | + htab->elf.sgot->output_offset + off | |
142411ca | 5058 | - roff |
5c98a14e | 5059 | - largepic |
142411ca L |
5060 | - input_section->output_section->vma |
5061 | - input_section->output_offset | |
5062 | - 12); | |
5063 | bfd_put_32 (output_bfd, relocation, | |
5c98a14e JJ |
5064 | contents + roff + 8 + largepic); |
5065 | /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */ | |
142411ca L |
5066 | rel++; |
5067 | continue; | |
5068 | } | |
351f65ca | 5069 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC) |
142411ca L |
5070 | { |
5071 | /* GDesc -> IE transition. | |
5072 | It's originally something like: | |
5073 | leaq x@tlsdesc(%rip), %rax | |
67a4f2b7 | 5074 | |
142411ca | 5075 | Change it to: |
c9736ba0 | 5076 | movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */ |
67a4f2b7 | 5077 | |
142411ca L |
5078 | /* Now modify the instruction as appropriate. To |
5079 | turn a leaq into a movq in the form we use it, it | |
5080 | suffices to change the second byte from 0x8d to | |
5081 | 0x8b. */ | |
5082 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
5083 | ||
5084 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
5085 | htab->elf.sgot->output_section->vma |
5086 | + htab->elf.sgot->output_offset + off | |
142411ca L |
5087 | - rel->r_offset |
5088 | - input_section->output_section->vma | |
5089 | - input_section->output_offset | |
5090 | - 4, | |
5091 | contents + roff); | |
5092 | continue; | |
5093 | } | |
351f65ca | 5094 | else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL) |
142411ca L |
5095 | { |
5096 | /* GDesc -> IE transition. | |
5097 | It's originally: | |
5098 | call *(%rax) | |
5099 | ||
5100 | Change it to: | |
c9736ba0 | 5101 | xchg %ax, %ax. */ |
142411ca | 5102 | |
142411ca L |
5103 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
5104 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); | |
5105 | continue; | |
5106 | } | |
5107 | else | |
5108 | BFD_ASSERT (FALSE); | |
67a4f2b7 | 5109 | } |
bffbf940 JJ |
5110 | break; |
5111 | ||
5112 | case R_X86_64_TLSLD: | |
351f65ca L |
5113 | if (! elf_x86_64_tls_transition (info, input_bfd, |
5114 | input_section, contents, | |
5115 | symtab_hdr, sym_hashes, | |
5116 | &r_type, GOT_UNKNOWN, | |
5117 | rel, relend, h, r_symndx)) | |
142411ca | 5118 | return FALSE; |
a3fadc9a | 5119 | |
142411ca L |
5120 | if (r_type != R_X86_64_TLSLD) |
5121 | { | |
bffbf940 | 5122 | /* LD->LE transition: |
a3fadc9a | 5123 | leaq foo@tlsld(%rip), %rdi; call __tls_get_addr. |
52bc799a L |
5124 | For 64bit, we change it into: |
5125 | .word 0x6666; .byte 0x66; movq %fs:0, %rax. | |
5126 | For 32bit, we change it into: | |
5c98a14e JJ |
5127 | nopl 0x0(%rax); movl %fs:0, %eax. |
5128 | For largepic, change: | |
5129 | leaq foo@tlsgd(%rip), %rdi | |
5130 | movabsq $__tls_get_addr@pltoff, %rax | |
5131 | addq %rbx, %rax | |
5132 | call *%rax | |
5133 | into: | |
5134 | data32 data32 data32 nopw %cs:0x0(%rax,%rax,1) | |
5135 | movq %fs:0, %eax */ | |
142411ca L |
5136 | |
5137 | BFD_ASSERT (r_type == R_X86_64_TPOFF32); | |
5c98a14e JJ |
5138 | if (ABI_64_P (output_bfd) |
5139 | && contents[rel->r_offset + 5] == (bfd_byte) '\xb8') | |
5140 | memcpy (contents + rel->r_offset - 3, | |
5141 | "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0" | |
5142 | "\x64\x48\x8b\x04\x25\0\0\0", 22); | |
5143 | else if (ABI_64_P (output_bfd)) | |
52bc799a L |
5144 | memcpy (contents + rel->r_offset - 3, |
5145 | "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12); | |
5146 | else | |
5147 | memcpy (contents + rel->r_offset - 3, | |
5148 | "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12); | |
5c98a14e | 5149 | /* Skip R_X86_64_PC32/R_X86_64_PLT32/R_X86_64_PLTOFF64. */ |
bffbf940 JJ |
5150 | rel++; |
5151 | continue; | |
5152 | } | |
5153 | ||
6de2ae4a | 5154 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
5155 | abort (); |
5156 | ||
5157 | off = htab->tls_ld_got.offset; | |
5158 | if (off & 1) | |
5159 | off &= ~1; | |
5160 | else | |
5161 | { | |
5162 | Elf_Internal_Rela outrel; | |
bffbf940 | 5163 | |
6de2ae4a | 5164 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
5165 | abort (); |
5166 | ||
6de2ae4a L |
5167 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
5168 | + htab->elf.sgot->output_offset + off); | |
bffbf940 JJ |
5169 | |
5170 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 5171 | htab->elf.sgot->contents + off); |
bffbf940 | 5172 | bfd_put_64 (output_bfd, 0, |
6de2ae4a | 5173 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
351f65ca | 5174 | outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64); |
bffbf940 | 5175 | outrel.r_addend = 0; |
351f65ca | 5176 | elf_append_rela (output_bfd, htab->elf.srelgot, |
464d3bd4 | 5177 | &outrel); |
bffbf940 JJ |
5178 | htab->tls_ld_got.offset |= 1; |
5179 | } | |
6de2ae4a L |
5180 | relocation = htab->elf.sgot->output_section->vma |
5181 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 5182 | unresolved_reloc = FALSE; |
bffbf940 JJ |
5183 | break; |
5184 | ||
5185 | case R_X86_64_DTPOFF32: | |
0e1862bb L |
5186 | if (!bfd_link_executable (info) |
5187 | || (input_section->flags & SEC_CODE) == 0) | |
351f65ca | 5188 | relocation -= elf_x86_64_dtpoff_base (info); |
bffbf940 | 5189 | else |
351f65ca | 5190 | relocation = elf_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
5191 | break; |
5192 | ||
5193 | case R_X86_64_TPOFF32: | |
6769d501 | 5194 | case R_X86_64_TPOFF64: |
0e1862bb | 5195 | BFD_ASSERT (bfd_link_executable (info)); |
351f65ca | 5196 | relocation = elf_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
5197 | break; |
5198 | ||
a69ed7f7 L |
5199 | case R_X86_64_DTPOFF64: |
5200 | BFD_ASSERT ((input_section->flags & SEC_CODE) == 0); | |
5201 | relocation -= elf_x86_64_dtpoff_base (info); | |
5202 | break; | |
5203 | ||
70256ad8 AJ |
5204 | default: |
5205 | break; | |
5206 | } | |
8d88c4ca | 5207 | |
239e1f3a AM |
5208 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
5209 | because such sections are not SEC_ALLOC and thus ld.so will | |
5210 | not process them. */ | |
c434dee6 | 5211 | if (unresolved_reloc |
239e1f3a | 5212 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
5213 | && h->def_dynamic) |
5214 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
5215 | rel->r_offset) != (bfd_vma) -1) | |
a040981f L |
5216 | { |
5217 | (*_bfd_error_handler) | |
5218 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), | |
5219 | input_bfd, | |
5220 | input_section, | |
5221 | (long) rel->r_offset, | |
5222 | howto->name, | |
5223 | h->root.root.string); | |
5224 | return FALSE; | |
5225 | } | |
c434dee6 | 5226 | |
cbe950e9 | 5227 | do_relocation: |
8d88c4ca | 5228 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
c434dee6 AJ |
5229 | contents, rel->r_offset, |
5230 | relocation, rel->r_addend); | |
8d88c4ca | 5231 | |
62d78908 | 5232 | check_relocation_error: |
8d88c4ca | 5233 | if (r != bfd_reloc_ok) |
8da6118f | 5234 | { |
c434dee6 AJ |
5235 | const char *name; |
5236 | ||
5237 | if (h != NULL) | |
5238 | name = h->root.root.string; | |
5239 | else | |
8da6118f | 5240 | { |
c434dee6 AJ |
5241 | name = bfd_elf_string_from_elf_section (input_bfd, |
5242 | symtab_hdr->sh_link, | |
5243 | sym->st_name); | |
5244 | if (name == NULL) | |
b34976b6 | 5245 | return FALSE; |
c434dee6 AJ |
5246 | if (*name == '\0') |
5247 | name = bfd_section_name (input_bfd, sec); | |
5248 | } | |
5249 | ||
5250 | if (r == bfd_reloc_overflow) | |
5251 | { | |
c434dee6 | 5252 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
5253 | (info, (h ? &h->root : NULL), name, howto->name, |
5254 | (bfd_vma) 0, input_bfd, input_section, | |
5255 | rel->r_offset))) | |
b34976b6 | 5256 | return FALSE; |
c434dee6 AJ |
5257 | } |
5258 | else | |
5259 | { | |
5260 | (*_bfd_error_handler) | |
bb95161d | 5261 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
d003868e | 5262 | input_bfd, input_section, |
c434dee6 | 5263 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 5264 | return FALSE; |
8da6118f KH |
5265 | } |
5266 | } | |
8d88c4ca | 5267 | } |
70256ad8 | 5268 | |
b34976b6 | 5269 | return TRUE; |
70256ad8 AJ |
5270 | } |
5271 | ||
5272 | /* Finish up dynamic symbol handling. We set the contents of various | |
5273 | dynamic sections here. */ | |
5274 | ||
b34976b6 | 5275 | static bfd_boolean |
351f65ca L |
5276 | elf_x86_64_finish_dynamic_symbol (bfd *output_bfd, |
5277 | struct bfd_link_info *info, | |
5278 | struct elf_link_hash_entry *h, | |
220cf809 | 5279 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
70256ad8 | 5280 | { |
351f65ca | 5281 | struct elf_x86_64_link_hash_table *htab; |
0ff2b86e L |
5282 | const struct elf_x86_64_backend_data *abed; |
5283 | bfd_boolean use_plt_bnd; | |
dd7e64d4 | 5284 | struct elf_x86_64_link_hash_entry *eh; |
70256ad8 | 5285 | |
351f65ca | 5286 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
5287 | if (htab == NULL) |
5288 | return FALSE; | |
70256ad8 | 5289 | |
0ff2b86e L |
5290 | /* Use MPX backend data in case of BND relocation. Use .plt_bnd |
5291 | section only if there is .plt section. */ | |
5292 | use_plt_bnd = htab->elf.splt != NULL && htab->plt_bnd != NULL; | |
5293 | abed = (use_plt_bnd | |
5294 | ? &elf_x86_64_bnd_arch_bed | |
5295 | : get_elf_x86_64_backend_data (output_bfd)); | |
5296 | ||
dd7e64d4 L |
5297 | eh = (struct elf_x86_64_link_hash_entry *) h; |
5298 | ||
70256ad8 AJ |
5299 | if (h->plt.offset != (bfd_vma) -1) |
5300 | { | |
70256ad8 | 5301 | bfd_vma plt_index; |
0ff2b86e L |
5302 | bfd_vma got_offset, plt_offset, plt_plt_offset, plt_got_offset; |
5303 | bfd_vma plt_plt_insn_end, plt_got_insn_size; | |
70256ad8 | 5304 | Elf_Internal_Rela rela; |
947216bf | 5305 | bfd_byte *loc; |
0ff2b86e | 5306 | asection *plt, *gotplt, *relplt, *resolved_plt; |
351f65ca | 5307 | const struct elf_backend_data *bed; |
5974eba6 | 5308 | bfd_vma plt_got_pcrel_offset; |
cbe950e9 L |
5309 | |
5310 | /* When building a static executable, use .iplt, .igot.plt and | |
5311 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 5312 | if (htab->elf.splt != NULL) |
cbe950e9 | 5313 | { |
6de2ae4a L |
5314 | plt = htab->elf.splt; |
5315 | gotplt = htab->elf.sgotplt; | |
5316 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
5317 | } |
5318 | else | |
5319 | { | |
6de2ae4a L |
5320 | plt = htab->elf.iplt; |
5321 | gotplt = htab->elf.igotplt; | |
5322 | relplt = htab->elf.irelplt; | |
cbe950e9 | 5323 | } |
70256ad8 AJ |
5324 | |
5325 | /* This symbol has an entry in the procedure linkage table. Set | |
407443a3 | 5326 | it up. */ |
cbe950e9 | 5327 | if ((h->dynindx == -1 |
0e1862bb | 5328 | && !((h->forced_local || bfd_link_executable (info)) |
cbe950e9 L |
5329 | && h->def_regular |
5330 | && h->type == STT_GNU_IFUNC)) | |
5331 | || plt == NULL | |
5332 | || gotplt == NULL | |
5333 | || relplt == NULL) | |
cec7f46a | 5334 | abort (); |
70256ad8 AJ |
5335 | |
5336 | /* Get the index in the procedure linkage table which | |
5337 | corresponds to this symbol. This is the index of this symbol | |
5338 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 5339 | first entry in the procedure linkage table is reserved. |
6bbec505 | 5340 | |
cbe950e9 | 5341 | Get the offset into the .got table of the entry that |
407443a3 | 5342 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE |
cbe950e9 L |
5343 | bytes. The first three are reserved for the dynamic linker. |
5344 | ||
5345 | For static executables, we don't reserve anything. */ | |
5346 | ||
6de2ae4a | 5347 | if (plt == htab->elf.splt) |
cbe950e9 | 5348 | { |
eed180f8 | 5349 | got_offset = h->plt.offset / abed->plt_entry_size - 1; |
e1f98742 | 5350 | got_offset = (got_offset + 3) * GOT_ENTRY_SIZE; |
cbe950e9 L |
5351 | } |
5352 | else | |
5353 | { | |
eed180f8 | 5354 | got_offset = h->plt.offset / abed->plt_entry_size; |
e1f98742 | 5355 | got_offset = got_offset * GOT_ENTRY_SIZE; |
cbe950e9 | 5356 | } |
70256ad8 | 5357 | |
0ff2b86e L |
5358 | plt_plt_insn_end = abed->plt_plt_insn_end; |
5359 | plt_plt_offset = abed->plt_plt_offset; | |
5360 | plt_got_insn_size = abed->plt_got_insn_size; | |
5361 | plt_got_offset = abed->plt_got_offset; | |
5362 | if (use_plt_bnd) | |
5363 | { | |
5364 | /* Use the second PLT with BND relocations. */ | |
5365 | const bfd_byte *plt_entry, *plt2_entry; | |
0ff2b86e L |
5366 | |
5367 | if (eh->has_bnd_reloc) | |
5368 | { | |
5369 | plt_entry = elf_x86_64_bnd_plt_entry; | |
5370 | plt2_entry = elf_x86_64_bnd_plt2_entry; | |
5371 | } | |
5372 | else | |
5373 | { | |
5374 | plt_entry = elf_x86_64_legacy_plt_entry; | |
5375 | plt2_entry = elf_x86_64_legacy_plt2_entry; | |
5376 | ||
5377 | /* Subtract 1 since there is no BND prefix. */ | |
5378 | plt_plt_insn_end -= 1; | |
5379 | plt_plt_offset -= 1; | |
5380 | plt_got_insn_size -= 1; | |
5381 | plt_got_offset -= 1; | |
5382 | } | |
5383 | ||
5384 | BFD_ASSERT (sizeof (elf_x86_64_bnd_plt_entry) | |
5385 | == sizeof (elf_x86_64_legacy_plt_entry)); | |
5386 | ||
5387 | /* Fill in the entry in the procedure linkage table. */ | |
5388 | memcpy (plt->contents + h->plt.offset, | |
5389 | plt_entry, sizeof (elf_x86_64_legacy_plt_entry)); | |
5390 | /* Fill in the entry in the second PLT. */ | |
5391 | memcpy (htab->plt_bnd->contents + eh->plt_bnd.offset, | |
5392 | plt2_entry, sizeof (elf_x86_64_legacy_plt2_entry)); | |
5393 | ||
5394 | resolved_plt = htab->plt_bnd; | |
5395 | plt_offset = eh->plt_bnd.offset; | |
5396 | } | |
5397 | else | |
5398 | { | |
5399 | /* Fill in the entry in the procedure linkage table. */ | |
5400 | memcpy (plt->contents + h->plt.offset, abed->plt_entry, | |
5401 | abed->plt_entry_size); | |
5402 | ||
5403 | resolved_plt = plt; | |
5404 | plt_offset = h->plt.offset; | |
5405 | } | |
eed180f8 RM |
5406 | |
5407 | /* Insert the relocation positions of the plt section. */ | |
5408 | ||
5409 | /* Put offset the PC-relative instruction referring to the GOT entry, | |
5410 | subtracting the size of that instruction. */ | |
ab7fede8 L |
5411 | plt_got_pcrel_offset = (gotplt->output_section->vma |
5412 | + gotplt->output_offset | |
5413 | + got_offset | |
5414 | - resolved_plt->output_section->vma | |
5415 | - resolved_plt->output_offset | |
5416 | - plt_offset | |
5417 | - plt_got_insn_size); | |
5418 | ||
5419 | /* Check PC-relative offset overflow in PLT entry. */ | |
5974eba6 | 5420 | if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff) |
ab7fede8 L |
5421 | info->callbacks->einfo (_("%F%B: PC-relative offset overflow in PLT entry for `%s'\n"), |
5422 | output_bfd, h->root.root.string); | |
5423 | ||
5424 | bfd_put_32 (output_bfd, plt_got_pcrel_offset, | |
0ff2b86e | 5425 | resolved_plt->contents + plt_offset + plt_got_offset); |
cbe950e9 | 5426 | |
653165cc | 5427 | /* Fill in the entry in the global offset table, initially this |
eed180f8 | 5428 | points to the second part of the PLT entry. */ |
cbe950e9 L |
5429 | bfd_put_64 (output_bfd, (plt->output_section->vma |
5430 | + plt->output_offset | |
eed180f8 | 5431 | + h->plt.offset + abed->plt_lazy_offset), |
cbe950e9 | 5432 | gotplt->contents + got_offset); |
70256ad8 AJ |
5433 | |
5434 | /* Fill in the entry in the .rela.plt section. */ | |
cbe950e9 L |
5435 | rela.r_offset = (gotplt->output_section->vma |
5436 | + gotplt->output_offset | |
70256ad8 | 5437 | + got_offset); |
cbe950e9 | 5438 | if (h->dynindx == -1 |
0e1862bb | 5439 | || ((bfd_link_executable (info) |
cbe950e9 L |
5440 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
5441 | && h->def_regular | |
5442 | && h->type == STT_GNU_IFUNC)) | |
5443 | { | |
5444 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
5445 | R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */ | |
351f65ca | 5446 | rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE); |
cbe950e9 L |
5447 | rela.r_addend = (h->root.u.def.value |
5448 | + h->root.u.def.section->output_section->vma | |
5449 | + h->root.u.def.section->output_offset); | |
e1f98742 L |
5450 | /* R_X86_64_IRELATIVE comes last. */ |
5451 | plt_index = htab->next_irelative_index--; | |
cbe950e9 L |
5452 | } |
5453 | else | |
5454 | { | |
351f65ca | 5455 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT); |
cbe950e9 | 5456 | rela.r_addend = 0; |
e1f98742 L |
5457 | plt_index = htab->next_jump_slot_index++; |
5458 | } | |
5459 | ||
5460 | /* Don't fill PLT entry for static executables. */ | |
5461 | if (plt == htab->elf.splt) | |
5462 | { | |
35a14c6b L |
5463 | bfd_vma plt0_offset = h->plt.offset + plt_plt_insn_end; |
5464 | ||
e1f98742 L |
5465 | /* Put relocation index. */ |
5466 | bfd_put_32 (output_bfd, plt_index, | |
eed180f8 | 5467 | plt->contents + h->plt.offset + abed->plt_reloc_offset); |
35a14c6b L |
5468 | |
5469 | /* Put offset for jmp .PLT0 and check for overflow. We don't | |
5470 | check relocation index for overflow since branch displacement | |
5471 | will overflow first. */ | |
5472 | if (plt0_offset > 0x80000000) | |
5473 | info->callbacks->einfo (_("%F%B: branch displacement overflow in PLT entry for `%s'\n"), | |
5474 | output_bfd, h->root.root.string); | |
5475 | bfd_put_32 (output_bfd, - plt0_offset, | |
0ff2b86e | 5476 | plt->contents + h->plt.offset + plt_plt_offset); |
cbe950e9 | 5477 | } |
351f65ca L |
5478 | |
5479 | bed = get_elf_backend_data (output_bfd); | |
5480 | loc = relplt->contents + plt_index * bed->s->sizeof_rela; | |
82e96e07 | 5481 | bed->s->swap_reloca_out (output_bfd, &rela, loc); |
dd7e64d4 L |
5482 | } |
5483 | else if (eh->plt_got.offset != (bfd_vma) -1) | |
5484 | { | |
5485 | bfd_vma got_offset, plt_offset, plt_got_offset, plt_got_insn_size; | |
5486 | asection *plt, *got; | |
5487 | bfd_boolean got_after_plt; | |
5488 | int32_t got_pcrel_offset; | |
5489 | const bfd_byte *got_plt_entry; | |
5490 | ||
5491 | /* Set the entry in the GOT procedure linkage table. */ | |
5492 | plt = htab->plt_got; | |
5493 | got = htab->elf.sgot; | |
5494 | got_offset = h->got.offset; | |
5495 | ||
5496 | if (got_offset == (bfd_vma) -1 | |
5497 | || h->type == STT_GNU_IFUNC | |
5498 | || plt == NULL | |
5499 | || got == NULL) | |
5500 | abort (); | |
70256ad8 | 5501 | |
dd7e64d4 L |
5502 | /* Use the second PLT entry template for the GOT PLT since they |
5503 | are the identical. */ | |
5504 | plt_got_insn_size = elf_x86_64_bnd_arch_bed.plt_got_insn_size; | |
5505 | plt_got_offset = elf_x86_64_bnd_arch_bed.plt_got_offset; | |
5506 | if (eh->has_bnd_reloc) | |
5507 | got_plt_entry = elf_x86_64_bnd_plt2_entry; | |
5508 | else | |
70256ad8 | 5509 | { |
dd7e64d4 L |
5510 | got_plt_entry = elf_x86_64_legacy_plt2_entry; |
5511 | ||
5512 | /* Subtract 1 since there is no BND prefix. */ | |
5513 | plt_got_insn_size -= 1; | |
5514 | plt_got_offset -= 1; | |
70256ad8 | 5515 | } |
dd7e64d4 L |
5516 | |
5517 | /* Fill in the entry in the GOT procedure linkage table. */ | |
5518 | plt_offset = eh->plt_got.offset; | |
5519 | memcpy (plt->contents + plt_offset, | |
5520 | got_plt_entry, sizeof (elf_x86_64_legacy_plt2_entry)); | |
5521 | ||
5522 | /* Put offset the PC-relative instruction referring to the GOT | |
5523 | entry, subtracting the size of that instruction. */ | |
5524 | got_pcrel_offset = (got->output_section->vma | |
5525 | + got->output_offset | |
5526 | + got_offset | |
5527 | - plt->output_section->vma | |
5528 | - plt->output_offset | |
5529 | - plt_offset | |
5530 | - plt_got_insn_size); | |
5531 | ||
5532 | /* Check PC-relative offset overflow in GOT PLT entry. */ | |
5533 | got_after_plt = got->output_section->vma > plt->output_section->vma; | |
5534 | if ((got_after_plt && got_pcrel_offset < 0) | |
5535 | || (!got_after_plt && got_pcrel_offset > 0)) | |
5536 | info->callbacks->einfo (_("%F%B: PC-relative offset overflow in GOT PLT entry for `%s'\n"), | |
5537 | output_bfd, h->root.root.string); | |
5538 | ||
5539 | bfd_put_32 (output_bfd, got_pcrel_offset, | |
5540 | plt->contents + plt_offset + plt_got_offset); | |
5541 | } | |
5542 | ||
5543 | if (!h->def_regular | |
5544 | && (h->plt.offset != (bfd_vma) -1 | |
5545 | || eh->plt_got.offset != (bfd_vma) -1)) | |
5546 | { | |
5547 | /* Mark the symbol as undefined, rather than as defined in | |
5548 | the .plt section. Leave the value if there were any | |
5549 | relocations where pointer equality matters (this is a clue | |
5550 | for the dynamic linker, to make function pointer | |
5551 | comparisons work between an application and shared | |
5552 | library), otherwise set it to zero. If a function is only | |
5553 | called from a binary, there is no need to slow down | |
5554 | shared libraries because of that. */ | |
5555 | sym->st_shndx = SHN_UNDEF; | |
5556 | if (!h->pointer_equality_needed) | |
5557 | sym->st_value = 0; | |
70256ad8 AJ |
5558 | } |
5559 | ||
bffbf940 | 5560 | if (h->got.offset != (bfd_vma) -1 |
351f65ca L |
5561 | && ! GOT_TLS_GD_ANY_P (elf_x86_64_hash_entry (h)->tls_type) |
5562 | && elf_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE) | |
053579d7 | 5563 | { |
053579d7 AJ |
5564 | Elf_Internal_Rela rela; |
5565 | ||
5566 | /* This symbol has an entry in the global offset table. Set it | |
bffbf940 | 5567 | up. */ |
6de2ae4a | 5568 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
c434dee6 | 5569 | abort (); |
053579d7 | 5570 | |
6de2ae4a L |
5571 | rela.r_offset = (htab->elf.sgot->output_section->vma |
5572 | + htab->elf.sgot->output_offset | |
dc810e39 | 5573 | + (h->got.offset &~ (bfd_vma) 1)); |
053579d7 AJ |
5574 | |
5575 | /* If this is a static link, or it is a -Bsymbolic link and the | |
5576 | symbol is defined locally or was forced to be local because | |
5577 | of a version file, we just want to emit a RELATIVE reloc. | |
5578 | The entry in the global offset table will already have been | |
5579 | initialized in the relocate_section function. */ | |
710ab287 | 5580 | if (h->def_regular |
0018b0a3 L |
5581 | && h->type == STT_GNU_IFUNC) |
5582 | { | |
0e1862bb | 5583 | if (bfd_link_pic (info)) |
710ab287 L |
5584 | { |
5585 | /* Generate R_X86_64_GLOB_DAT. */ | |
5586 | goto do_glob_dat; | |
5587 | } | |
5588 | else | |
5589 | { | |
90d60710 L |
5590 | asection *plt; |
5591 | ||
710ab287 L |
5592 | if (!h->pointer_equality_needed) |
5593 | abort (); | |
5594 | ||
5595 | /* For non-shared object, we can't use .got.plt, which | |
5596 | contains the real function addres if we need pointer | |
5597 | equality. We load the GOT entry with the PLT entry. */ | |
90d60710 | 5598 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
710ab287 L |
5599 | bfd_put_64 (output_bfd, (plt->output_section->vma |
5600 | + plt->output_offset | |
5601 | + h->plt.offset), | |
6de2ae4a | 5602 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
5603 | return TRUE; |
5604 | } | |
0018b0a3 | 5605 | } |
0e1862bb | 5606 | else if (bfd_link_pic (info) |
0018b0a3 | 5607 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
053579d7 | 5608 | { |
41bed6dd L |
5609 | if (!h->def_regular) |
5610 | return FALSE; | |
cc78d0af | 5611 | BFD_ASSERT((h->got.offset & 1) != 0); |
351f65ca | 5612 | rela.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
053579d7 AJ |
5613 | rela.r_addend = (h->root.u.def.value |
5614 | + h->root.u.def.section->output_section->vma | |
5615 | + h->root.u.def.section->output_offset); | |
5616 | } | |
5617 | else | |
5618 | { | |
5619 | BFD_ASSERT((h->got.offset & 1) == 0); | |
710ab287 | 5620 | do_glob_dat: |
c434dee6 | 5621 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 5622 | htab->elf.sgot->contents + h->got.offset); |
351f65ca | 5623 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT); |
053579d7 AJ |
5624 | rela.r_addend = 0; |
5625 | } | |
5626 | ||
351f65ca | 5627 | elf_append_rela (output_bfd, htab->elf.srelgot, &rela); |
053579d7 AJ |
5628 | } |
5629 | ||
f5385ebf | 5630 | if (h->needs_copy) |
70256ad8 | 5631 | { |
70256ad8 AJ |
5632 | Elf_Internal_Rela rela; |
5633 | ||
5634 | /* This symbol needs a copy reloc. Set it up. */ | |
5635 | ||
c434dee6 AJ |
5636 | if (h->dynindx == -1 |
5637 | || (h->root.type != bfd_link_hash_defined | |
5638 | && h->root.type != bfd_link_hash_defweak) | |
5639 | || htab->srelbss == NULL) | |
5640 | abort (); | |
70256ad8 AJ |
5641 | |
5642 | rela.r_offset = (h->root.u.def.value | |
5643 | + h->root.u.def.section->output_section->vma | |
5644 | + h->root.u.def.section->output_offset); | |
351f65ca | 5645 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY); |
70256ad8 | 5646 | rela.r_addend = 0; |
351f65ca | 5647 | elf_append_rela (output_bfd, htab->srelbss, &rela); |
70256ad8 AJ |
5648 | } |
5649 | ||
b34976b6 | 5650 | return TRUE; |
70256ad8 AJ |
5651 | } |
5652 | ||
c25bc9fc L |
5653 | /* Finish up local dynamic symbol handling. We set the contents of |
5654 | various dynamic sections here. */ | |
5655 | ||
5656 | static bfd_boolean | |
351f65ca | 5657 | elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf) |
c25bc9fc L |
5658 | { |
5659 | struct elf_link_hash_entry *h | |
5660 | = (struct elf_link_hash_entry *) *slot; | |
5661 | struct bfd_link_info *info | |
eed180f8 | 5662 | = (struct bfd_link_info *) inf; |
c25bc9fc | 5663 | |
351f65ca | 5664 | return elf_x86_64_finish_dynamic_symbol (info->output_bfd, |
c25bc9fc L |
5665 | info, h, NULL); |
5666 | } | |
5667 | ||
c434dee6 AJ |
5668 | /* Used to decide how to sort relocs in an optimal manner for the |
5669 | dynamic linker, before writing them out. */ | |
5670 | ||
5671 | static enum elf_reloc_type_class | |
cae1fbbb | 5672 | elf_x86_64_reloc_type_class (const struct bfd_link_info *info, |
7e612e98 AM |
5673 | const asection *rel_sec ATTRIBUTE_UNUSED, |
5674 | const Elf_Internal_Rela *rela) | |
c434dee6 | 5675 | { |
cae1fbbb L |
5676 | bfd *abfd = info->output_bfd; |
5677 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
5678 | struct elf_x86_64_link_hash_table *htab = elf_x86_64_hash_table (info); | |
5679 | unsigned long r_symndx = htab->r_sym (rela->r_info); | |
5680 | Elf_Internal_Sym sym; | |
5681 | ||
5682 | if (htab->elf.dynsym == NULL | |
5683 | || !bed->s->swap_symbol_in (abfd, | |
5684 | (htab->elf.dynsym->contents | |
5685 | + r_symndx * bed->s->sizeof_sym), | |
5686 | 0, &sym)) | |
5687 | abort (); | |
5688 | ||
5689 | /* Check relocation against STT_GNU_IFUNC symbol. */ | |
5690 | if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
5691 | return reloc_class_ifunc; | |
5692 | ||
351f65ca | 5693 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
c434dee6 AJ |
5694 | { |
5695 | case R_X86_64_RELATIVE: | |
1da80baa | 5696 | case R_X86_64_RELATIVE64: |
c434dee6 AJ |
5697 | return reloc_class_relative; |
5698 | case R_X86_64_JUMP_SLOT: | |
5699 | return reloc_class_plt; | |
5700 | case R_X86_64_COPY: | |
5701 | return reloc_class_copy; | |
5702 | default: | |
5703 | return reloc_class_normal; | |
5704 | } | |
5705 | } | |
5706 | ||
70256ad8 AJ |
5707 | /* Finish up the dynamic sections. */ |
5708 | ||
b34976b6 | 5709 | static bfd_boolean |
351f65ca L |
5710 | elf_x86_64_finish_dynamic_sections (bfd *output_bfd, |
5711 | struct bfd_link_info *info) | |
70256ad8 | 5712 | { |
351f65ca | 5713 | struct elf_x86_64_link_hash_table *htab; |
70256ad8 AJ |
5714 | bfd *dynobj; |
5715 | asection *sdyn; | |
0ff2b86e | 5716 | const struct elf_x86_64_backend_data *abed; |
70256ad8 | 5717 | |
351f65ca | 5718 | htab = elf_x86_64_hash_table (info); |
4dfe6ac6 NC |
5719 | if (htab == NULL) |
5720 | return FALSE; | |
5721 | ||
0ff2b86e L |
5722 | /* Use MPX backend data in case of BND relocation. Use .plt_bnd |
5723 | section only if there is .plt section. */ | |
5724 | abed = (htab->elf.splt != NULL && htab->plt_bnd != NULL | |
5725 | ? &elf_x86_64_bnd_arch_bed | |
5726 | : get_elf_x86_64_backend_data (output_bfd)); | |
5727 | ||
c434dee6 | 5728 | dynobj = htab->elf.dynobj; |
3d4d4302 | 5729 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
70256ad8 | 5730 | |
c434dee6 | 5731 | if (htab->elf.dynamic_sections_created) |
70256ad8 | 5732 | { |
82e96e07 L |
5733 | bfd_byte *dyncon, *dynconend; |
5734 | const struct elf_backend_data *bed; | |
5735 | bfd_size_type sizeof_dyn; | |
70256ad8 | 5736 | |
6de2ae4a | 5737 | if (sdyn == NULL || htab->elf.sgot == NULL) |
c434dee6 | 5738 | abort (); |
70256ad8 | 5739 | |
82e96e07 L |
5740 | bed = get_elf_backend_data (dynobj); |
5741 | sizeof_dyn = bed->s->sizeof_dyn; | |
5742 | dyncon = sdyn->contents; | |
5743 | dynconend = sdyn->contents + sdyn->size; | |
5744 | for (; dyncon < dynconend; dyncon += sizeof_dyn) | |
70256ad8 AJ |
5745 | { |
5746 | Elf_Internal_Dyn dyn; | |
70256ad8 AJ |
5747 | asection *s; |
5748 | ||
82e96e07 | 5749 | (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn); |
70256ad8 AJ |
5750 | |
5751 | switch (dyn.d_tag) | |
5752 | { | |
5753 | default: | |
053579d7 | 5754 | continue; |
70256ad8 AJ |
5755 | |
5756 | case DT_PLTGOT: | |
6de2ae4a | 5757 | s = htab->elf.sgotplt; |
8c37241b | 5758 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
c434dee6 | 5759 | break; |
70256ad8 AJ |
5760 | |
5761 | case DT_JMPREL: | |
6de2ae4a | 5762 | dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma; |
c434dee6 | 5763 | break; |
70256ad8 | 5764 | |
c434dee6 | 5765 | case DT_PLTRELSZ: |
6de2ae4a | 5766 | s = htab->elf.srelplt->output_section; |
eea6121a | 5767 | dyn.d_un.d_val = s->size; |
70256ad8 AJ |
5768 | break; |
5769 | ||
5770 | case DT_RELASZ: | |
c434dee6 AJ |
5771 | /* The procedure linkage table relocs (DT_JMPREL) should |
5772 | not be included in the overall relocs (DT_RELA). | |
5773 | Therefore, we override the DT_RELASZ entry here to | |
5774 | make it not include the JMPREL relocs. Since the | |
5775 | linker script arranges for .rela.plt to follow all | |
5776 | other relocation sections, we don't have to worry | |
5777 | about changing the DT_RELA entry. */ | |
6de2ae4a | 5778 | if (htab->elf.srelplt != NULL) |
70256ad8 | 5779 | { |
6de2ae4a | 5780 | s = htab->elf.srelplt->output_section; |
eea6121a | 5781 | dyn.d_un.d_val -= s->size; |
70256ad8 AJ |
5782 | } |
5783 | break; | |
67a4f2b7 AO |
5784 | |
5785 | case DT_TLSDESC_PLT: | |
6de2ae4a | 5786 | s = htab->elf.splt; |
67a4f2b7 AO |
5787 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
5788 | + htab->tlsdesc_plt; | |
5789 | break; | |
5790 | ||
5791 | case DT_TLSDESC_GOT: | |
6de2ae4a | 5792 | s = htab->elf.sgot; |
67a4f2b7 AO |
5793 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
5794 | + htab->tlsdesc_got; | |
5795 | break; | |
70256ad8 | 5796 | } |
c434dee6 | 5797 | |
82e96e07 | 5798 | (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon); |
70256ad8 AJ |
5799 | } |
5800 | ||
c434dee6 | 5801 | /* Fill in the special first entry in the procedure linkage table. */ |
6de2ae4a | 5802 | if (htab->elf.splt && htab->elf.splt->size > 0) |
70256ad8 | 5803 | { |
653165cc | 5804 | /* Fill in the first entry in the procedure linkage table. */ |
eed180f8 RM |
5805 | memcpy (htab->elf.splt->contents, |
5806 | abed->plt0_entry, abed->plt_entry_size); | |
653165cc AJ |
5807 | /* Add offset for pushq GOT+8(%rip), since the instruction |
5808 | uses 6 bytes subtract this value. */ | |
5809 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
5810 | (htab->elf.sgotplt->output_section->vma |
5811 | + htab->elf.sgotplt->output_offset | |
653165cc | 5812 | + 8 |
6de2ae4a L |
5813 | - htab->elf.splt->output_section->vma |
5814 | - htab->elf.splt->output_offset | |
653165cc | 5815 | - 6), |
eed180f8 RM |
5816 | htab->elf.splt->contents + abed->plt0_got1_offset); |
5817 | /* Add offset for the PC-relative instruction accessing GOT+16, | |
5818 | subtracting the offset to the end of that instruction. */ | |
653165cc | 5819 | bfd_put_32 (output_bfd, |
6de2ae4a L |
5820 | (htab->elf.sgotplt->output_section->vma |
5821 | + htab->elf.sgotplt->output_offset | |
653165cc | 5822 | + 16 |
6de2ae4a L |
5823 | - htab->elf.splt->output_section->vma |
5824 | - htab->elf.splt->output_offset | |
eed180f8 RM |
5825 | - abed->plt0_got2_insn_end), |
5826 | htab->elf.splt->contents + abed->plt0_got2_offset); | |
653165cc | 5827 | |
eed180f8 RM |
5828 | elf_section_data (htab->elf.splt->output_section) |
5829 | ->this_hdr.sh_entsize = abed->plt_entry_size; | |
67a4f2b7 AO |
5830 | |
5831 | if (htab->tlsdesc_plt) | |
5832 | { | |
5833 | bfd_put_64 (output_bfd, (bfd_vma) 0, | |
6de2ae4a | 5834 | htab->elf.sgot->contents + htab->tlsdesc_got); |
67a4f2b7 | 5835 | |
6de2ae4a | 5836 | memcpy (htab->elf.splt->contents + htab->tlsdesc_plt, |
eed180f8 | 5837 | abed->plt0_entry, abed->plt_entry_size); |
67a4f2b7 AO |
5838 | |
5839 | /* Add offset for pushq GOT+8(%rip), since the | |
5840 | instruction uses 6 bytes subtract this value. */ | |
5841 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
5842 | (htab->elf.sgotplt->output_section->vma |
5843 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 | 5844 | + 8 |
6de2ae4a L |
5845 | - htab->elf.splt->output_section->vma |
5846 | - htab->elf.splt->output_offset | |
67a4f2b7 AO |
5847 | - htab->tlsdesc_plt |
5848 | - 6), | |
eed180f8 RM |
5849 | htab->elf.splt->contents |
5850 | + htab->tlsdesc_plt + abed->plt0_got1_offset); | |
5851 | /* Add offset for the PC-relative instruction accessing GOT+TDG, | |
5852 | where TGD stands for htab->tlsdesc_got, subtracting the offset | |
5853 | to the end of that instruction. */ | |
67a4f2b7 | 5854 | bfd_put_32 (output_bfd, |
6de2ae4a L |
5855 | (htab->elf.sgot->output_section->vma |
5856 | + htab->elf.sgot->output_offset | |
67a4f2b7 | 5857 | + htab->tlsdesc_got |
6de2ae4a L |
5858 | - htab->elf.splt->output_section->vma |
5859 | - htab->elf.splt->output_offset | |
67a4f2b7 | 5860 | - htab->tlsdesc_plt |
eed180f8 RM |
5861 | - abed->plt0_got2_insn_end), |
5862 | htab->elf.splt->contents | |
5863 | + htab->tlsdesc_plt + abed->plt0_got2_offset); | |
67a4f2b7 | 5864 | } |
70256ad8 | 5865 | } |
70256ad8 AJ |
5866 | } |
5867 | ||
0ff2b86e L |
5868 | if (htab->plt_bnd != NULL) |
5869 | elf_section_data (htab->plt_bnd->output_section) | |
5870 | ->this_hdr.sh_entsize = sizeof (elf_x86_64_bnd_plt2_entry); | |
5871 | ||
6de2ae4a | 5872 | if (htab->elf.sgotplt) |
70256ad8 | 5873 | { |
56d4289c L |
5874 | if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) |
5875 | { | |
5876 | (*_bfd_error_handler) | |
5877 | (_("discarded output section: `%A'"), htab->elf.sgotplt); | |
5878 | return FALSE; | |
5879 | } | |
5880 | ||
c434dee6 | 5881 | /* Fill in the first three entries in the global offset table. */ |
6de2ae4a | 5882 | if (htab->elf.sgotplt->size > 0) |
c434dee6 AJ |
5883 | { |
5884 | /* Set the first entry in the global offset table to the address of | |
5885 | the dynamic section. */ | |
5886 | if (sdyn == NULL) | |
6de2ae4a | 5887 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents); |
c434dee6 AJ |
5888 | else |
5889 | bfd_put_64 (output_bfd, | |
5890 | sdyn->output_section->vma + sdyn->output_offset, | |
6de2ae4a | 5891 | htab->elf.sgotplt->contents); |
c434dee6 | 5892 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
6de2ae4a L |
5893 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE); |
5894 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2); | |
c434dee6 | 5895 | } |
70256ad8 | 5896 | |
6de2ae4a | 5897 | elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = |
c434dee6 AJ |
5898 | GOT_ENTRY_SIZE; |
5899 | } | |
70256ad8 | 5900 | |
e41b3a13 | 5901 | /* Adjust .eh_frame for .plt section. */ |
9a2a56cc AM |
5902 | if (htab->plt_eh_frame != NULL |
5903 | && htab->plt_eh_frame->contents != NULL) | |
e41b3a13 JJ |
5904 | { |
5905 | if (htab->elf.splt != NULL | |
5906 | && htab->elf.splt->size != 0 | |
5907 | && (htab->elf.splt->flags & SEC_EXCLUDE) == 0 | |
5908 | && htab->elf.splt->output_section != NULL | |
5909 | && htab->plt_eh_frame->output_section != NULL) | |
5910 | { | |
5911 | bfd_vma plt_start = htab->elf.splt->output_section->vma; | |
5912 | bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma | |
5913 | + htab->plt_eh_frame->output_offset | |
5914 | + PLT_FDE_START_OFFSET; | |
5915 | bfd_put_signed_32 (dynobj, plt_start - eh_frame_start, | |
5916 | htab->plt_eh_frame->contents | |
5917 | + PLT_FDE_START_OFFSET); | |
5918 | } | |
dbaa2011 | 5919 | if (htab->plt_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME) |
e41b3a13 JJ |
5920 | { |
5921 | if (! _bfd_elf_write_section_eh_frame (output_bfd, info, | |
5922 | htab->plt_eh_frame, | |
5923 | htab->plt_eh_frame->contents)) | |
5924 | return FALSE; | |
5925 | } | |
5926 | } | |
5927 | ||
6de2ae4a L |
5928 | if (htab->elf.sgot && htab->elf.sgot->size > 0) |
5929 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize | |
8c37241b JJ |
5930 | = GOT_ENTRY_SIZE; |
5931 | ||
c25bc9fc L |
5932 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
5933 | htab_traverse (htab->loc_hash_table, | |
351f65ca | 5934 | elf_x86_64_finish_local_dynamic_symbol, |
c25bc9fc L |
5935 | info); |
5936 | ||
b34976b6 | 5937 | return TRUE; |
8d88c4ca NC |
5938 | } |
5939 | ||
3972882e | 5940 | /* Return an array of PLT entry symbol values. */ |
4c45e5c9 | 5941 | |
3972882e L |
5942 | static bfd_vma * |
5943 | elf_x86_64_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt, | |
5944 | asection *relplt) | |
4c45e5c9 | 5945 | { |
3972882e L |
5946 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
5947 | arelent *p; | |
5948 | long count, i; | |
5949 | bfd_vma *plt_sym_val; | |
144bed8d | 5950 | bfd_vma plt_offset; |
3972882e L |
5951 | bfd_byte *plt_contents; |
5952 | const struct elf_x86_64_backend_data *bed; | |
5953 | Elf_Internal_Shdr *hdr; | |
5954 | asection *plt_bnd; | |
144bed8d | 5955 | |
3972882e L |
5956 | /* Get the .plt section contents. PLT passed down may point to the |
5957 | .plt.bnd section. Make sure that PLT always points to the .plt | |
5958 | section. */ | |
5959 | plt_bnd = bfd_get_section_by_name (abfd, ".plt.bnd"); | |
5960 | if (plt_bnd) | |
5961 | { | |
5962 | if (plt != plt_bnd) | |
5963 | abort (); | |
5964 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
5965 | if (plt == NULL) | |
5966 | abort (); | |
5967 | bed = &elf_x86_64_bnd_arch_bed; | |
5968 | } | |
5969 | else | |
5970 | bed = get_elf_x86_64_backend_data (abfd); | |
cca5b8b6 | 5971 | |
3972882e L |
5972 | plt_contents = (bfd_byte *) bfd_malloc (plt->size); |
5973 | if (plt_contents == NULL) | |
5974 | return NULL; | |
5975 | if (!bfd_get_section_contents (abfd, (asection *) plt, | |
5976 | plt_contents, 0, plt->size)) | |
144bed8d | 5977 | { |
3972882e L |
5978 | bad_return: |
5979 | free (plt_contents); | |
5980 | return NULL; | |
144bed8d L |
5981 | } |
5982 | ||
3972882e L |
5983 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
5984 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
5985 | goto bad_return; | |
144bed8d | 5986 | |
3972882e L |
5987 | hdr = &elf_section_data (relplt)->this_hdr; |
5988 | count = relplt->size / hdr->sh_entsize; | |
144bed8d | 5989 | |
3972882e L |
5990 | plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count); |
5991 | if (plt_sym_val == NULL) | |
5992 | goto bad_return; | |
cca5b8b6 | 5993 | |
35181b3e | 5994 | for (i = 0; i < count; i++) |
3972882e | 5995 | plt_sym_val[i] = -1; |
cca5b8b6 | 5996 | |
3972882e L |
5997 | plt_offset = bed->plt_entry_size; |
5998 | p = relplt->relocation; | |
5999 | for (i = 0; i < count; i++, p++) | |
144bed8d | 6000 | { |
3972882e | 6001 | long reloc_index; |
144bed8d | 6002 | |
6f25f223 | 6003 | /* Skip unknown relocation. */ |
533d0af0 | 6004 | if (p->howto == NULL) |
6f25f223 | 6005 | continue; |
533d0af0 | 6006 | |
3972882e L |
6007 | if (p->howto->type != R_X86_64_JUMP_SLOT |
6008 | && p->howto->type != R_X86_64_IRELATIVE) | |
6009 | continue; | |
144bed8d | 6010 | |
3972882e L |
6011 | reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset |
6012 | + bed->plt_reloc_offset)); | |
6013 | if (reloc_index >= count) | |
6014 | abort (); | |
6015 | if (plt_bnd) | |
144bed8d L |
6016 | { |
6017 | /* This is the index in .plt section. */ | |
6018 | long plt_index = plt_offset / bed->plt_entry_size; | |
3972882e L |
6019 | /* Store VMA + the offset in .plt.bnd section. */ |
6020 | plt_sym_val[reloc_index] = | |
6021 | (plt_bnd->vma | |
6022 | + (plt_index - 1) * sizeof (elf_x86_64_legacy_plt2_entry)); | |
144bed8d | 6023 | } |
3972882e L |
6024 | else |
6025 | plt_sym_val[reloc_index] = plt->vma + plt_offset; | |
144bed8d | 6026 | plt_offset += bed->plt_entry_size; |
fca6ae69 L |
6027 | |
6028 | /* PR binutils/18437: Skip extra relocations in the .rela.plt | |
6029 | section. */ | |
6030 | if (plt_offset >= plt->size) | |
6031 | break; | |
144bed8d L |
6032 | } |
6033 | ||
3972882e L |
6034 | free (plt_contents); |
6035 | ||
6036 | return plt_sym_val; | |
4c45e5c9 | 6037 | } |
8df9fc9d | 6038 | |
0ff2b86e L |
6039 | /* Similar to _bfd_elf_get_synthetic_symtab, with .plt.bnd section |
6040 | support. */ | |
6041 | ||
6042 | static long | |
6043 | elf_x86_64_get_synthetic_symtab (bfd *abfd, | |
6044 | long symcount, | |
6045 | asymbol **syms, | |
6046 | long dynsymcount, | |
6047 | asymbol **dynsyms, | |
6048 | asymbol **ret) | |
6049 | { | |
3972882e L |
6050 | /* Pass the .plt.bnd section to _bfd_elf_ifunc_get_synthetic_symtab |
6051 | as PLT if it exists. */ | |
6052 | asection *plt = bfd_get_section_by_name (abfd, ".plt.bnd"); | |
0ff2b86e | 6053 | if (plt == NULL) |
3972882e L |
6054 | plt = bfd_get_section_by_name (abfd, ".plt"); |
6055 | return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms, | |
6056 | dynsymcount, dynsyms, ret, | |
6057 | plt, | |
6058 | elf_x86_64_get_plt_sym_val); | |
0ff2b86e L |
6059 | } |
6060 | ||
d2b2c203 DJ |
6061 | /* Handle an x86-64 specific section when reading an object file. This |
6062 | is called when elfcode.h finds a section with an unknown type. */ | |
6063 | ||
6064 | static bfd_boolean | |
0c723101 L |
6065 | elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr, |
6066 | const char *name, int shindex) | |
d2b2c203 DJ |
6067 | { |
6068 | if (hdr->sh_type != SHT_X86_64_UNWIND) | |
6069 | return FALSE; | |
6070 | ||
6dc132d9 | 6071 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
d2b2c203 DJ |
6072 | return FALSE; |
6073 | ||
6074 | return TRUE; | |
6075 | } | |
6076 | ||
3b22753a L |
6077 | /* Hook called by the linker routine which adds symbols from an object |
6078 | file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead | |
6079 | of .bss. */ | |
6080 | ||
6081 | static bfd_boolean | |
351f65ca L |
6082 | elf_x86_64_add_symbol_hook (bfd *abfd, |
6083 | struct bfd_link_info *info, | |
6084 | Elf_Internal_Sym *sym, | |
6085 | const char **namep ATTRIBUTE_UNUSED, | |
6086 | flagword *flagsp ATTRIBUTE_UNUSED, | |
6087 | asection **secp, | |
6088 | bfd_vma *valp) | |
3b22753a L |
6089 | { |
6090 | asection *lcomm; | |
6091 | ||
6092 | switch (sym->st_shndx) | |
6093 | { | |
6094 | case SHN_X86_64_LCOMMON: | |
6095 | lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON"); | |
6096 | if (lcomm == NULL) | |
6097 | { | |
6098 | lcomm = bfd_make_section_with_flags (abfd, | |
6099 | "LARGE_COMMON", | |
6100 | (SEC_ALLOC | |
6101 | | SEC_IS_COMMON | |
6102 | | SEC_LINKER_CREATED)); | |
6103 | if (lcomm == NULL) | |
6104 | return FALSE; | |
6105 | elf_section_flags (lcomm) |= SHF_X86_64_LARGE; | |
6106 | } | |
6107 | *secp = lcomm; | |
6108 | *valp = sym->st_size; | |
c35bdf6e | 6109 | return TRUE; |
3b22753a | 6110 | } |
d8045f23 | 6111 | |
13a2df29 | 6112 | if (ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE |
f1885d1e AM |
6113 | && (abfd->flags & DYNAMIC) == 0 |
6114 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
13a2df29 L |
6115 | elf_tdata (info->output_bfd)->has_gnu_symbols |
6116 | |= elf_gnu_symbol_unique; | |
d8045f23 | 6117 | |
3b22753a L |
6118 | return TRUE; |
6119 | } | |
6120 | ||
6121 | ||
6122 | /* Given a BFD section, try to locate the corresponding ELF section | |
6123 | index. */ | |
6124 | ||
6125 | static bfd_boolean | |
351f65ca L |
6126 | elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
6127 | asection *sec, int *index_return) | |
3b22753a L |
6128 | { |
6129 | if (sec == &_bfd_elf_large_com_section) | |
6130 | { | |
91d6fa6a | 6131 | *index_return = SHN_X86_64_LCOMMON; |
3b22753a L |
6132 | return TRUE; |
6133 | } | |
6134 | return FALSE; | |
6135 | } | |
6136 | ||
6137 | /* Process a symbol. */ | |
6138 | ||
6139 | static void | |
351f65ca L |
6140 | elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, |
6141 | asymbol *asym) | |
3b22753a L |
6142 | { |
6143 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
6144 | ||
6145 | switch (elfsym->internal_elf_sym.st_shndx) | |
6146 | { | |
6147 | case SHN_X86_64_LCOMMON: | |
6148 | asym->section = &_bfd_elf_large_com_section; | |
6149 | asym->value = elfsym->internal_elf_sym.st_size; | |
6150 | /* Common symbol doesn't set BSF_GLOBAL. */ | |
6151 | asym->flags &= ~BSF_GLOBAL; | |
6152 | break; | |
6153 | } | |
6154 | } | |
6155 | ||
6156 | static bfd_boolean | |
351f65ca | 6157 | elf_x86_64_common_definition (Elf_Internal_Sym *sym) |
3b22753a L |
6158 | { |
6159 | return (sym->st_shndx == SHN_COMMON | |
6160 | || sym->st_shndx == SHN_X86_64_LCOMMON); | |
6161 | } | |
6162 | ||
6163 | static unsigned int | |
351f65ca | 6164 | elf_x86_64_common_section_index (asection *sec) |
3b22753a L |
6165 | { |
6166 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
6167 | return SHN_COMMON; | |
6168 | else | |
6169 | return SHN_X86_64_LCOMMON; | |
6170 | } | |
6171 | ||
6172 | static asection * | |
351f65ca | 6173 | elf_x86_64_common_section (asection *sec) |
3b22753a L |
6174 | { |
6175 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
6176 | return bfd_com_section_ptr; | |
6177 | else | |
6178 | return &_bfd_elf_large_com_section; | |
6179 | } | |
6180 | ||
6181 | static bfd_boolean | |
5d13b3b3 AM |
6182 | elf_x86_64_merge_symbol (struct elf_link_hash_entry *h, |
6183 | const Elf_Internal_Sym *sym, | |
351f65ca | 6184 | asection **psec, |
5d13b3b3 AM |
6185 | bfd_boolean newdef, |
6186 | bfd_boolean olddef, | |
351f65ca | 6187 | bfd *oldbfd, |
5d13b3b3 | 6188 | const asection *oldsec) |
3b22753a L |
6189 | { |
6190 | /* A normal common symbol and a large common symbol result in a | |
00492999 L |
6191 | normal common symbol. We turn the large common symbol into a |
6192 | normal one. */ | |
5d13b3b3 | 6193 | if (!olddef |
3b22753a | 6194 | && h->root.type == bfd_link_hash_common |
5d13b3b3 AM |
6195 | && !newdef |
6196 | && bfd_is_com_section (*psec) | |
6197 | && oldsec != *psec) | |
3b22753a | 6198 | { |
00492999 | 6199 | if (sym->st_shndx == SHN_COMMON |
5d13b3b3 | 6200 | && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0) |
00492999 L |
6201 | { |
6202 | h->root.u.c.p->section | |
6203 | = bfd_make_section_old_way (oldbfd, "COMMON"); | |
6204 | h->root.u.c.p->section->flags = SEC_ALLOC; | |
6205 | } | |
6206 | else if (sym->st_shndx == SHN_X86_64_LCOMMON | |
5d13b3b3 AM |
6207 | && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0) |
6208 | *psec = bfd_com_section_ptr; | |
3b22753a L |
6209 | } |
6210 | ||
6211 | return TRUE; | |
6212 | } | |
6213 | ||
6214 | static int | |
351f65ca L |
6215 | elf_x86_64_additional_program_headers (bfd *abfd, |
6216 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
3b22753a L |
6217 | { |
6218 | asection *s; | |
9a2e389a | 6219 | int count = 0; |
3b22753a L |
6220 | |
6221 | /* Check to see if we need a large readonly segment. */ | |
6222 | s = bfd_get_section_by_name (abfd, ".lrodata"); | |
6223 | if (s && (s->flags & SEC_LOAD)) | |
6224 | count++; | |
6225 | ||
6226 | /* Check to see if we need a large data segment. Since .lbss sections | |
6227 | is placed right after the .bss section, there should be no need for | |
6228 | a large data segment just because of .lbss. */ | |
6229 | s = bfd_get_section_by_name (abfd, ".ldata"); | |
6230 | if (s && (s->flags & SEC_LOAD)) | |
6231 | count++; | |
6232 | ||
6233 | return count; | |
6234 | } | |
6235 | ||
fdc90cb4 JJ |
6236 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
6237 | ||
6238 | static bfd_boolean | |
351f65ca | 6239 | elf_x86_64_hash_symbol (struct elf_link_hash_entry *h) |
fdc90cb4 JJ |
6240 | { |
6241 | if (h->plt.offset != (bfd_vma) -1 | |
6242 | && !h->def_regular | |
6243 | && !h->pointer_equality_needed) | |
6244 | return FALSE; | |
6245 | ||
6246 | return _bfd_elf_hash_symbol (h); | |
6247 | } | |
6248 | ||
c543bf9a L |
6249 | /* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */ |
6250 | ||
6251 | static bfd_boolean | |
6252 | elf_x86_64_relocs_compatible (const bfd_target *input, | |
6253 | const bfd_target *output) | |
6254 | { | |
6255 | return ((xvec_get_elf_backend_data (input)->s->elfclass | |
6256 | == xvec_get_elf_backend_data (output)->s->elfclass) | |
6257 | && _bfd_elf_relocs_compatible (input, output)); | |
6258 | } | |
6259 | ||
9a2e389a | 6260 | static const struct bfd_elf_special_section |
351f65ca | 6261 | elf_x86_64_special_sections[]= |
3b22753a | 6262 | { |
0112cd26 NC |
6263 | { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, |
6264 | { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
6265 | { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE}, | |
6266 | { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
6267 | { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
6268 | { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
6269 | { NULL, 0, 0, 0, 0 } | |
3b22753a L |
6270 | }; |
6271 | ||
6d00b590 | 6272 | #define TARGET_LITTLE_SYM x86_64_elf64_vec |
70256ad8 AJ |
6273 | #define TARGET_LITTLE_NAME "elf64-x86-64" |
6274 | #define ELF_ARCH bfd_arch_i386 | |
ae95ffa6 | 6275 | #define ELF_TARGET_ID X86_64_ELF_DATA |
70256ad8 | 6276 | #define ELF_MACHINE_CODE EM_X86_64 |
f7661549 | 6277 | #define ELF_MAXPAGESIZE 0x200000 |
2043964e | 6278 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 6279 | #define ELF_COMMONPAGESIZE 0x1000 |
70256ad8 AJ |
6280 | |
6281 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 6282 | #define elf_backend_can_refcount 1 |
70256ad8 AJ |
6283 | #define elf_backend_want_got_plt 1 |
6284 | #define elf_backend_plt_readonly 1 | |
6285 | #define elf_backend_want_plt_sym 0 | |
6286 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE*3) | |
b491616a | 6287 | #define elf_backend_rela_normal 1 |
e41b3a13 | 6288 | #define elf_backend_plt_alignment 4 |
f7483970 | 6289 | #define elf_backend_extern_protected_data 1 |
70256ad8 | 6290 | |
351f65ca | 6291 | #define elf_info_to_howto elf_x86_64_info_to_howto |
70256ad8 | 6292 | |
70256ad8 | 6293 | #define bfd_elf64_bfd_link_hash_table_create \ |
351f65ca | 6294 | elf_x86_64_link_hash_table_create |
351f65ca | 6295 | #define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup |
157090f7 | 6296 | #define bfd_elf64_bfd_reloc_name_lookup \ |
351f65ca | 6297 | elf_x86_64_reloc_name_lookup |
70256ad8 | 6298 | |
351f65ca | 6299 | #define elf_backend_adjust_dynamic_symbol elf_x86_64_adjust_dynamic_symbol |
c543bf9a | 6300 | #define elf_backend_relocs_compatible elf_x86_64_relocs_compatible |
351f65ca L |
6301 | #define elf_backend_check_relocs elf_x86_64_check_relocs |
6302 | #define elf_backend_copy_indirect_symbol elf_x86_64_copy_indirect_symbol | |
6303 | #define elf_backend_create_dynamic_sections elf_x86_64_create_dynamic_sections | |
6304 | #define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections | |
6305 | #define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol | |
6306 | #define elf_backend_gc_mark_hook elf_x86_64_gc_mark_hook | |
6307 | #define elf_backend_gc_sweep_hook elf_x86_64_gc_sweep_hook | |
6308 | #define elf_backend_grok_prstatus elf_x86_64_grok_prstatus | |
6309 | #define elf_backend_grok_psinfo elf_x86_64_grok_psinfo | |
8fd79e71 L |
6310 | #ifdef CORE_HEADER |
6311 | #define elf_backend_write_core_note elf_x86_64_write_core_note | |
6312 | #endif | |
351f65ca L |
6313 | #define elf_backend_reloc_type_class elf_x86_64_reloc_type_class |
6314 | #define elf_backend_relocate_section elf_x86_64_relocate_section | |
6315 | #define elf_backend_size_dynamic_sections elf_x86_64_size_dynamic_sections | |
6316 | #define elf_backend_always_size_sections elf_x86_64_always_size_sections | |
74541ad4 | 6317 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
407443a3 | 6318 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
351f65ca | 6319 | #define bfd_elf64_mkobject elf_x86_64_mkobject |
0ff2b86e | 6320 | #define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab |
8d88c4ca | 6321 | |
d2b2c203 | 6322 | #define elf_backend_section_from_shdr \ |
351f65ca | 6323 | elf_x86_64_section_from_shdr |
d2b2c203 | 6324 | |
3b22753a | 6325 | #define elf_backend_section_from_bfd_section \ |
351f65ca | 6326 | elf_x86_64_elf_section_from_bfd_section |
3b22753a | 6327 | #define elf_backend_add_symbol_hook \ |
351f65ca | 6328 | elf_x86_64_add_symbol_hook |
3b22753a | 6329 | #define elf_backend_symbol_processing \ |
351f65ca | 6330 | elf_x86_64_symbol_processing |
3b22753a | 6331 | #define elf_backend_common_section_index \ |
351f65ca | 6332 | elf_x86_64_common_section_index |
3b22753a | 6333 | #define elf_backend_common_section \ |
351f65ca | 6334 | elf_x86_64_common_section |
3b22753a | 6335 | #define elf_backend_common_definition \ |
351f65ca | 6336 | elf_x86_64_common_definition |
3b22753a | 6337 | #define elf_backend_merge_symbol \ |
351f65ca | 6338 | elf_x86_64_merge_symbol |
3b22753a | 6339 | #define elf_backend_special_sections \ |
351f65ca | 6340 | elf_x86_64_special_sections |
3b22753a | 6341 | #define elf_backend_additional_program_headers \ |
351f65ca | 6342 | elf_x86_64_additional_program_headers |
fdc90cb4 | 6343 | #define elf_backend_hash_symbol \ |
351f65ca | 6344 | elf_x86_64_hash_symbol |
3b22753a | 6345 | |
8d88c4ca | 6346 | #include "elf64-target.h" |
9d7cbccd | 6347 | |
6036f486 ES |
6348 | /* CloudABI support. */ |
6349 | ||
6350 | #undef TARGET_LITTLE_SYM | |
6351 | #define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec | |
6352 | #undef TARGET_LITTLE_NAME | |
6353 | #define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi" | |
6354 | ||
6355 | #undef ELF_OSABI | |
6356 | #define ELF_OSABI ELFOSABI_CLOUDABI | |
6357 | ||
6358 | #undef elf64_bed | |
6359 | #define elf64_bed elf64_x86_64_cloudabi_bed | |
6360 | ||
6361 | #include "elf64-target.h" | |
6362 | ||
9d7cbccd NC |
6363 | /* FreeBSD support. */ |
6364 | ||
6365 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 6366 | #define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec |
9d7cbccd NC |
6367 | #undef TARGET_LITTLE_NAME |
6368 | #define TARGET_LITTLE_NAME "elf64-x86-64-freebsd" | |
6369 | ||
d1036acb L |
6370 | #undef ELF_OSABI |
6371 | #define ELF_OSABI ELFOSABI_FREEBSD | |
9d7cbccd | 6372 | |
9d7cbccd NC |
6373 | #undef elf64_bed |
6374 | #define elf64_bed elf64_x86_64_fbsd_bed | |
6375 | ||
6376 | #include "elf64-target.h" | |
8a9036a4 | 6377 | |
a6cc6b3b RO |
6378 | /* Solaris 2 support. */ |
6379 | ||
6380 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 6381 | #define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec |
a6cc6b3b RO |
6382 | #undef TARGET_LITTLE_NAME |
6383 | #define TARGET_LITTLE_NAME "elf64-x86-64-sol2" | |
6384 | ||
6385 | /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE | |
6386 | objects won't be recognized. */ | |
6387 | #undef ELF_OSABI | |
6388 | ||
6389 | #undef elf64_bed | |
6390 | #define elf64_bed elf64_x86_64_sol2_bed | |
6391 | ||
7dc98aea RO |
6392 | /* The 64-bit static TLS arena size is rounded to the nearest 16-byte |
6393 | boundary. */ | |
6394 | #undef elf_backend_static_tls_alignment | |
6395 | #define elf_backend_static_tls_alignment 16 | |
6396 | ||
a6cc6b3b RO |
6397 | /* The Solaris 2 ABI requires a plt symbol on all platforms. |
6398 | ||
6399 | Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output | |
6400 | File, p.63. */ | |
6401 | #undef elf_backend_want_plt_sym | |
6402 | #define elf_backend_want_plt_sym 1 | |
6403 | ||
6404 | #include "elf64-target.h" | |
6405 | ||
8059fb19 RM |
6406 | /* Native Client support. */ |
6407 | ||
64b384e1 RM |
6408 | static bfd_boolean |
6409 | elf64_x86_64_nacl_elf_object_p (bfd *abfd) | |
6410 | { | |
6411 | /* Set the right machine number for a NaCl x86-64 ELF64 file. */ | |
6412 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl); | |
6413 | return TRUE; | |
6414 | } | |
6415 | ||
8059fb19 | 6416 | #undef TARGET_LITTLE_SYM |
6d00b590 | 6417 | #define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec |
8059fb19 RM |
6418 | #undef TARGET_LITTLE_NAME |
6419 | #define TARGET_LITTLE_NAME "elf64-x86-64-nacl" | |
6420 | #undef elf64_bed | |
6421 | #define elf64_bed elf64_x86_64_nacl_bed | |
6422 | ||
6423 | #undef ELF_MAXPAGESIZE | |
6424 | #undef ELF_MINPAGESIZE | |
6425 | #undef ELF_COMMONPAGESIZE | |
6426 | #define ELF_MAXPAGESIZE 0x10000 | |
6427 | #define ELF_MINPAGESIZE 0x10000 | |
6428 | #define ELF_COMMONPAGESIZE 0x10000 | |
6429 | ||
6430 | /* Restore defaults. */ | |
6431 | #undef ELF_OSABI | |
6432 | #undef elf_backend_static_tls_alignment | |
6433 | #undef elf_backend_want_plt_sym | |
6434 | #define elf_backend_want_plt_sym 0 | |
6435 | ||
6436 | /* NaCl uses substantially different PLT entries for the same effects. */ | |
6437 | ||
6438 | #undef elf_backend_plt_alignment | |
6439 | #define elf_backend_plt_alignment 5 | |
6440 | #define NACL_PLT_ENTRY_SIZE 64 | |
6441 | #define NACLMASK 0xe0 /* 32-byte alignment mask. */ | |
6442 | ||
6443 | static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] = | |
6444 | { | |
6445 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ | |
6446 | 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */ | |
6447 | 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */ | |
6448 | 0x4d, 0x01, 0xfb, /* add %r15, %r11 */ | |
6449 | 0x41, 0xff, 0xe3, /* jmpq *%r11 */ | |
6450 | ||
ea2d813e | 6451 | /* 9-byte nop sequence to pad out to the next 32-byte boundary. */ |
70cc877f | 6452 | 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */ |
ea2d813e RM |
6453 | |
6454 | /* 32 bytes of nop to pad out to the standard size. */ | |
8059fb19 RM |
6455 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */ |
6456 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ | |
6457 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */ | |
6458 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ | |
ea2d813e RM |
6459 | 0x66, /* excess data32 prefix */ |
6460 | 0x90 /* nop */ | |
8059fb19 RM |
6461 | }; |
6462 | ||
6463 | static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] = | |
6464 | { | |
6465 | 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */ | |
6466 | 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */ | |
6467 | 0x4d, 0x01, 0xfb, /* add %r15, %r11 */ | |
6468 | 0x41, 0xff, 0xe3, /* jmpq *%r11 */ | |
6469 | ||
6470 | /* 15-byte nop sequence to pad out to the next 32-byte boundary. */ | |
6471 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */ | |
6472 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ | |
6473 | ||
6474 | /* Lazy GOT entries point here (32-byte aligned). */ | |
6475 | 0x68, /* pushq immediate */ | |
6476 | 0, 0, 0, 0, /* replaced with index into relocation table. */ | |
6477 | 0xe9, /* jmp relative */ | |
6478 | 0, 0, 0, 0, /* replaced with offset to start of .plt0. */ | |
6479 | ||
6480 | /* 22 bytes of nop to pad out to the standard size. */ | |
6481 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */ | |
6482 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ | |
6483 | 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */ | |
6484 | }; | |
6485 | ||
6486 | /* .eh_frame covering the .plt section. */ | |
6487 | ||
6488 | static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] = | |
6489 | { | |
6490 | #if (PLT_CIE_LENGTH != 20 \ | |
6491 | || PLT_FDE_LENGTH != 36 \ | |
6492 | || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \ | |
6493 | || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12) | |
6494 | # error "Need elf_x86_64_backend_data parameters for eh_frame_plt offsets!" | |
6495 | #endif | |
6496 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
6497 | 0, 0, 0, 0, /* CIE ID */ | |
6498 | 1, /* CIE version */ | |
6499 | 'z', 'R', 0, /* Augmentation string */ | |
6500 | 1, /* Code alignment factor */ | |
6501 | 0x78, /* Data alignment factor */ | |
6502 | 16, /* Return address column */ | |
6503 | 1, /* Augmentation size */ | |
6504 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
6505 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
6506 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
6507 | DW_CFA_nop, DW_CFA_nop, | |
6508 | ||
6509 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
6510 | PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */ | |
6511 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
6512 | 0, 0, 0, 0, /* .plt size goes here */ | |
6513 | 0, /* Augmentation size */ | |
6514 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
6515 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
6516 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
6517 | DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */ | |
6518 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
6519 | 13, /* Block length */ | |
6520 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
6521 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
6522 | DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge, | |
6523 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
6524 | DW_CFA_nop, DW_CFA_nop | |
6525 | }; | |
6526 | ||
6527 | static const struct elf_x86_64_backend_data elf_x86_64_nacl_arch_bed = | |
6528 | { | |
6529 | elf_x86_64_nacl_plt0_entry, /* plt0_entry */ | |
6530 | elf_x86_64_nacl_plt_entry, /* plt_entry */ | |
6531 | NACL_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
6532 | 2, /* plt0_got1_offset */ | |
6533 | 9, /* plt0_got2_offset */ | |
6534 | 13, /* plt0_got2_insn_end */ | |
6535 | 3, /* plt_got_offset */ | |
6536 | 33, /* plt_reloc_offset */ | |
6537 | 38, /* plt_plt_offset */ | |
6538 | 7, /* plt_got_insn_size */ | |
6539 | 42, /* plt_plt_insn_end */ | |
6540 | 32, /* plt_lazy_offset */ | |
6541 | elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */ | |
6542 | sizeof (elf_x86_64_nacl_eh_frame_plt), /* eh_frame_plt_size */ | |
6543 | }; | |
6544 | ||
6545 | #undef elf_backend_arch_data | |
6546 | #define elf_backend_arch_data &elf_x86_64_nacl_arch_bed | |
6547 | ||
64b384e1 RM |
6548 | #undef elf_backend_object_p |
6549 | #define elf_backend_object_p elf64_x86_64_nacl_elf_object_p | |
5a68afcf RM |
6550 | #undef elf_backend_modify_segment_map |
6551 | #define elf_backend_modify_segment_map nacl_modify_segment_map | |
6552 | #undef elf_backend_modify_program_headers | |
6553 | #define elf_backend_modify_program_headers nacl_modify_program_headers | |
887badb3 RM |
6554 | #undef elf_backend_final_write_processing |
6555 | #define elf_backend_final_write_processing nacl_final_write_processing | |
5a68afcf | 6556 | |
8059fb19 RM |
6557 | #include "elf64-target.h" |
6558 | ||
6559 | /* Native Client x32 support. */ | |
6560 | ||
64b384e1 RM |
6561 | static bfd_boolean |
6562 | elf32_x86_64_nacl_elf_object_p (bfd *abfd) | |
6563 | { | |
6564 | /* Set the right machine number for a NaCl x86-64 ELF32 file. */ | |
6565 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl); | |
6566 | return TRUE; | |
6567 | } | |
6568 | ||
8059fb19 | 6569 | #undef TARGET_LITTLE_SYM |
6d00b590 | 6570 | #define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec |
8059fb19 RM |
6571 | #undef TARGET_LITTLE_NAME |
6572 | #define TARGET_LITTLE_NAME "elf32-x86-64-nacl" | |
6573 | #undef elf32_bed | |
6574 | #define elf32_bed elf32_x86_64_nacl_bed | |
6575 | ||
6576 | #define bfd_elf32_bfd_link_hash_table_create \ | |
6577 | elf_x86_64_link_hash_table_create | |
8059fb19 RM |
6578 | #define bfd_elf32_bfd_reloc_type_lookup \ |
6579 | elf_x86_64_reloc_type_lookup | |
6580 | #define bfd_elf32_bfd_reloc_name_lookup \ | |
6581 | elf_x86_64_reloc_name_lookup | |
6582 | #define bfd_elf32_mkobject \ | |
6583 | elf_x86_64_mkobject | |
b7365e5d L |
6584 | #define bfd_elf32_get_synthetic_symtab \ |
6585 | elf_x86_64_get_synthetic_symtab | |
8059fb19 RM |
6586 | |
6587 | #undef elf_backend_object_p | |
6588 | #define elf_backend_object_p \ | |
64b384e1 | 6589 | elf32_x86_64_nacl_elf_object_p |
8059fb19 RM |
6590 | |
6591 | #undef elf_backend_bfd_from_remote_memory | |
6592 | #define elf_backend_bfd_from_remote_memory \ | |
6593 | _bfd_elf32_bfd_from_remote_memory | |
6594 | ||
6595 | #undef elf_backend_size_info | |
6596 | #define elf_backend_size_info \ | |
6597 | _bfd_elf32_size_info | |
6598 | ||
6599 | #include "elf32-target.h" | |
6600 | ||
6601 | /* Restore defaults. */ | |
5a68afcf | 6602 | #undef elf_backend_object_p |
8059fb19 | 6603 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
5a68afcf RM |
6604 | #undef elf_backend_bfd_from_remote_memory |
6605 | #undef elf_backend_size_info | |
6606 | #undef elf_backend_modify_segment_map | |
6607 | #undef elf_backend_modify_program_headers | |
887badb3 | 6608 | #undef elf_backend_final_write_processing |
8059fb19 | 6609 | |
8a9036a4 L |
6610 | /* Intel L1OM support. */ |
6611 | ||
6612 | static bfd_boolean | |
6613 | elf64_l1om_elf_object_p (bfd *abfd) | |
6614 | { | |
6615 | /* Set the right machine number for an L1OM elf64 file. */ | |
6616 | bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om); | |
6617 | return TRUE; | |
6618 | } | |
6619 | ||
6620 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 6621 | #define TARGET_LITTLE_SYM l1om_elf64_vec |
8a9036a4 L |
6622 | #undef TARGET_LITTLE_NAME |
6623 | #define TARGET_LITTLE_NAME "elf64-l1om" | |
6624 | #undef ELF_ARCH | |
6625 | #define ELF_ARCH bfd_arch_l1om | |
6626 | ||
6627 | #undef ELF_MACHINE_CODE | |
6628 | #define ELF_MACHINE_CODE EM_L1OM | |
6629 | ||
6630 | #undef ELF_OSABI | |
6631 | ||
6632 | #undef elf64_bed | |
6633 | #define elf64_bed elf64_l1om_bed | |
6634 | ||
6635 | #undef elf_backend_object_p | |
6636 | #define elf_backend_object_p elf64_l1om_elf_object_p | |
6637 | ||
8059fb19 RM |
6638 | /* Restore defaults. */ |
6639 | #undef ELF_MAXPAGESIZE | |
6640 | #undef ELF_MINPAGESIZE | |
6641 | #undef ELF_COMMONPAGESIZE | |
6642 | #define ELF_MAXPAGESIZE 0x200000 | |
6643 | #define ELF_MINPAGESIZE 0x1000 | |
6644 | #define ELF_COMMONPAGESIZE 0x1000 | |
6645 | #undef elf_backend_plt_alignment | |
6646 | #define elf_backend_plt_alignment 4 | |
6647 | #undef elf_backend_arch_data | |
6648 | #define elf_backend_arch_data &elf_x86_64_arch_bed | |
1a0c107f | 6649 | |
8a9036a4 L |
6650 | #include "elf64-target.h" |
6651 | ||
6652 | /* FreeBSD L1OM support. */ | |
6653 | ||
6654 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 6655 | #define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec |
8a9036a4 L |
6656 | #undef TARGET_LITTLE_NAME |
6657 | #define TARGET_LITTLE_NAME "elf64-l1om-freebsd" | |
6658 | ||
6659 | #undef ELF_OSABI | |
6660 | #define ELF_OSABI ELFOSABI_FREEBSD | |
6661 | ||
6662 | #undef elf64_bed | |
6663 | #define elf64_bed elf64_l1om_fbsd_bed | |
6664 | ||
8a9036a4 | 6665 | #include "elf64-target.h" |
351f65ca | 6666 | |
7a9068fe L |
6667 | /* Intel K1OM support. */ |
6668 | ||
6669 | static bfd_boolean | |
6670 | elf64_k1om_elf_object_p (bfd *abfd) | |
6671 | { | |
6672 | /* Set the right machine number for an K1OM elf64 file. */ | |
6673 | bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om); | |
6674 | return TRUE; | |
6675 | } | |
6676 | ||
6677 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 6678 | #define TARGET_LITTLE_SYM k1om_elf64_vec |
7a9068fe L |
6679 | #undef TARGET_LITTLE_NAME |
6680 | #define TARGET_LITTLE_NAME "elf64-k1om" | |
6681 | #undef ELF_ARCH | |
6682 | #define ELF_ARCH bfd_arch_k1om | |
6683 | ||
6684 | #undef ELF_MACHINE_CODE | |
6685 | #define ELF_MACHINE_CODE EM_K1OM | |
6686 | ||
6687 | #undef ELF_OSABI | |
6688 | ||
6689 | #undef elf64_bed | |
6690 | #define elf64_bed elf64_k1om_bed | |
6691 | ||
6692 | #undef elf_backend_object_p | |
6693 | #define elf_backend_object_p elf64_k1om_elf_object_p | |
6694 | ||
6695 | #undef elf_backend_static_tls_alignment | |
6696 | ||
6697 | #undef elf_backend_want_plt_sym | |
6698 | #define elf_backend_want_plt_sym 0 | |
6699 | ||
6700 | #include "elf64-target.h" | |
6701 | ||
6702 | /* FreeBSD K1OM support. */ | |
6703 | ||
6704 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 6705 | #define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec |
7a9068fe L |
6706 | #undef TARGET_LITTLE_NAME |
6707 | #define TARGET_LITTLE_NAME "elf64-k1om-freebsd" | |
6708 | ||
6709 | #undef ELF_OSABI | |
6710 | #define ELF_OSABI ELFOSABI_FREEBSD | |
6711 | ||
6712 | #undef elf64_bed | |
6713 | #define elf64_bed elf64_k1om_fbsd_bed | |
6714 | ||
6715 | #include "elf64-target.h" | |
6716 | ||
351f65ca L |
6717 | /* 32bit x86-64 support. */ |
6718 | ||
351f65ca | 6719 | #undef TARGET_LITTLE_SYM |
6d00b590 | 6720 | #define TARGET_LITTLE_SYM x86_64_elf32_vec |
351f65ca L |
6721 | #undef TARGET_LITTLE_NAME |
6722 | #define TARGET_LITTLE_NAME "elf32-x86-64" | |
8059fb19 | 6723 | #undef elf32_bed |
351f65ca L |
6724 | |
6725 | #undef ELF_ARCH | |
6726 | #define ELF_ARCH bfd_arch_i386 | |
6727 | ||
6728 | #undef ELF_MACHINE_CODE | |
6729 | #define ELF_MACHINE_CODE EM_X86_64 | |
6730 | ||
351f65ca L |
6731 | #undef ELF_OSABI |
6732 | ||
351f65ca L |
6733 | #undef elf_backend_object_p |
6734 | #define elf_backend_object_p \ | |
6735 | elf32_x86_64_elf_object_p | |
6736 | ||
6737 | #undef elf_backend_bfd_from_remote_memory | |
6738 | #define elf_backend_bfd_from_remote_memory \ | |
6739 | _bfd_elf32_bfd_from_remote_memory | |
6740 | ||
6741 | #undef elf_backend_size_info | |
6742 | #define elf_backend_size_info \ | |
6743 | _bfd_elf32_size_info | |
6744 | ||
6745 | #include "elf32-target.h" |