Commit | Line | Data |
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351f65ca | 1 | /* X86-64 specific support for ELF |
b3adc24a | 2 | Copyright (C) 2000-2020 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 | |
0afcef53 | 22 | #include "elfxx-x86.h" |
5a68afcf | 23 | #include "elf-nacl.h" |
e41b3a13 | 24 | #include "dwarf2.h" |
d7921315 | 25 | #include "libiberty.h" |
8d88c4ca | 26 | |
56ceb5b5 | 27 | #include "opcode/i386.h" |
8d88c4ca NC |
28 | #include "elf/x86-64.h" |
29 | ||
8fd79e71 L |
30 | #ifdef CORE_HEADER |
31 | #include <stdarg.h> | |
32 | #include CORE_HEADER | |
33 | #endif | |
34 | ||
8d88c4ca NC |
35 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ |
36 | #define MINUS_ONE (~ (bfd_vma) 0) | |
37 | ||
351f65ca L |
38 | /* Since both 32-bit and 64-bit x86-64 encode relocation type in the |
39 | identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get | |
40 | relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE | |
41 | since they are the same. */ | |
42 | ||
8d88c4ca | 43 | /* The relocation "howto" table. Order of fields: |
7b81dfbb AJ |
44 | type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow, |
45 | special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */ | |
70256ad8 AJ |
46 | static reloc_howto_type x86_64_elf_howto_table[] = |
47 | { | |
6346d5ca | 48 | HOWTO(R_X86_64_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont, |
b34976b6 AM |
49 | bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000, |
50 | FALSE), | |
51 | HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
52 | bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE, | |
53 | FALSE), | |
54 | HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
55 | bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff, | |
56 | TRUE), | |
57 | HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
58 | bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff, | |
59 | FALSE), | |
60 | HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
61 | bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff, | |
62 | TRUE), | |
63 | HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
64 | bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff, | |
65 | FALSE), | |
66 | HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
67 | bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE, | |
68 | MINUS_ONE, FALSE), | |
69 | HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
70 | bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE, | |
71 | MINUS_ONE, FALSE), | |
72 | HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
73 | bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE, | |
74 | MINUS_ONE, FALSE), | |
75 | HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
76 | bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff, | |
77 | 0xffffffff, TRUE), | |
78 | HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned, | |
79 | bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff, | |
80 | FALSE), | |
81 | HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
82 | bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff, | |
83 | FALSE), | |
84 | HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
85 | bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE), | |
b0360d8c | 86 | HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield, |
b34976b6 | 87 | bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE), |
ac2aa337 | 88 | HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
b34976b6 AM |
89 | bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE), |
90 | HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
91 | bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE), | |
92 | HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
93 | bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE, | |
94 | MINUS_ONE, FALSE), | |
95 | HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
96 | bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE, | |
97 | MINUS_ONE, FALSE), | |
98 | HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
99 | bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE, | |
100 | MINUS_ONE, FALSE), | |
101 | HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
102 | bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff, | |
103 | 0xffffffff, TRUE), | |
104 | HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
105 | bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff, | |
106 | 0xffffffff, TRUE), | |
ac2aa337 | 107 | HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed, |
b34976b6 AM |
108 | bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff, |
109 | 0xffffffff, FALSE), | |
110 | HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
111 | bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff, | |
112 | 0xffffffff, TRUE), | |
113 | HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
114 | bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff, | |
115 | 0xffffffff, FALSE), | |
d6ab8113 JB |
116 | HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
117 | bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE, | |
118 | TRUE), | |
119 | HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
120 | bfd_elf_generic_reloc, "R_X86_64_GOTOFF64", | |
121 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
122 | HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
123 | bfd_elf_generic_reloc, "R_X86_64_GOTPC32", | |
124 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
7b81dfbb AJ |
125 | HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed, |
126 | bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE, | |
127 | FALSE), | |
128 | HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed, | |
129 | bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE, | |
130 | MINUS_ONE, TRUE), | |
131 | HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed, | |
132 | bfd_elf_generic_reloc, "R_X86_64_GOTPC64", | |
133 | FALSE, MINUS_ONE, MINUS_ONE, TRUE), | |
134 | HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed, | |
135 | bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE, | |
136 | MINUS_ONE, FALSE), | |
137 | HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed, | |
138 | bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE, | |
139 | MINUS_ONE, FALSE), | |
1788fc08 L |
140 | HOWTO(R_X86_64_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned, |
141 | bfd_elf_generic_reloc, "R_X86_64_SIZE32", FALSE, 0xffffffff, 0xffffffff, | |
142 | FALSE), | |
143 | HOWTO(R_X86_64_SIZE64, 0, 4, 64, FALSE, 0, complain_overflow_unsigned, | |
144 | bfd_elf_generic_reloc, "R_X86_64_SIZE64", FALSE, MINUS_ONE, MINUS_ONE, | |
145 | FALSE), | |
67a4f2b7 AO |
146 | HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0, |
147 | complain_overflow_bitfield, bfd_elf_generic_reloc, | |
148 | "R_X86_64_GOTPC32_TLSDESC", | |
149 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
150 | HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0, | |
151 | complain_overflow_dont, bfd_elf_generic_reloc, | |
152 | "R_X86_64_TLSDESC_CALL", | |
153 | FALSE, 0, 0, FALSE), | |
154 | HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0, | |
155 | complain_overflow_bitfield, bfd_elf_generic_reloc, | |
156 | "R_X86_64_TLSDESC", | |
157 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
cbe950e9 L |
158 | HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
159 | bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE, | |
160 | MINUS_ONE, FALSE), | |
64d25c44 L |
161 | HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
162 | bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE, | |
163 | MINUS_ONE, FALSE), | |
c3320543 L |
164 | HOWTO(R_X86_64_PC32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed, |
165 | bfd_elf_generic_reloc, "R_X86_64_PC32_BND", FALSE, 0xffffffff, 0xffffffff, | |
166 | TRUE), | |
167 | HOWTO(R_X86_64_PLT32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
168 | bfd_elf_generic_reloc, "R_X86_64_PLT32_BND", FALSE, 0xffffffff, 0xffffffff, | |
169 | TRUE), | |
56ceb5b5 L |
170 | HOWTO(R_X86_64_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed, |
171 | bfd_elf_generic_reloc, "R_X86_64_GOTPCRELX", FALSE, 0xffffffff, | |
172 | 0xffffffff, TRUE), | |
173 | HOWTO(R_X86_64_REX_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
174 | bfd_elf_generic_reloc, "R_X86_64_REX_GOTPCRELX", FALSE, 0xffffffff, | |
175 | 0xffffffff, TRUE), | |
fe4770f4 | 176 | |
a33d77bc JB |
177 | /* We have a gap in the reloc numbers here. |
178 | R_X86_64_standard counts the number up to this point, and | |
179 | R_X86_64_vt_offset is the value to subtract from a reloc type of | |
180 | R_X86_64_GNU_VT* to form an index into this table. */ | |
56ceb5b5 | 181 | #define R_X86_64_standard (R_X86_64_REX_GOTPCRELX + 1) |
a33d77bc JB |
182 | #define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard) |
183 | ||
fe4770f4 | 184 | /* GNU extension to record C++ vtable hierarchy. */ |
b34976b6 AM |
185 | HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
186 | NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE), | |
fe4770f4 AJ |
187 | |
188 | /* GNU extension to record C++ vtable member usage. */ | |
b34976b6 AM |
189 | HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
190 | _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0, | |
d7921315 L |
191 | FALSE), |
192 | ||
193 | /* Use complain_overflow_bitfield on R_X86_64_32 for x32. */ | |
194 | HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
195 | bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff, | |
196 | FALSE) | |
8d88c4ca NC |
197 | }; |
198 | ||
daf1c414 | 199 | #define X86_PCREL_TYPE_P(TYPE) \ |
d8045f23 NC |
200 | ( ((TYPE) == R_X86_64_PC8) \ |
201 | || ((TYPE) == R_X86_64_PC16) \ | |
202 | || ((TYPE) == R_X86_64_PC32) \ | |
c3320543 | 203 | || ((TYPE) == R_X86_64_PC32_BND) \ |
d8045f23 NC |
204 | || ((TYPE) == R_X86_64_PC64)) |
205 | ||
aebcc8ff L |
206 | #define X86_SIZE_TYPE_P(TYPE) \ |
207 | ((TYPE) == R_X86_64_SIZE32 || (TYPE) == R_X86_64_SIZE64) | |
208 | ||
8d88c4ca | 209 | /* Map BFD relocs to the x86_64 elf relocs. */ |
70256ad8 AJ |
210 | struct elf_reloc_map |
211 | { | |
8d88c4ca NC |
212 | bfd_reloc_code_real_type bfd_reloc_val; |
213 | unsigned char elf_reloc_val; | |
214 | }; | |
215 | ||
dc810e39 | 216 | static const struct elf_reloc_map x86_64_reloc_map[] = |
8d88c4ca | 217 | { |
70256ad8 AJ |
218 | { BFD_RELOC_NONE, R_X86_64_NONE, }, |
219 | { BFD_RELOC_64, R_X86_64_64, }, | |
220 | { BFD_RELOC_32_PCREL, R_X86_64_PC32, }, | |
221 | { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,}, | |
222 | { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,}, | |
223 | { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, }, | |
224 | { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, }, | |
225 | { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, }, | |
226 | { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, }, | |
227 | { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, }, | |
228 | { BFD_RELOC_32, R_X86_64_32, }, | |
229 | { BFD_RELOC_X86_64_32S, R_X86_64_32S, }, | |
230 | { BFD_RELOC_16, R_X86_64_16, }, | |
231 | { BFD_RELOC_16_PCREL, R_X86_64_PC16, }, | |
232 | { BFD_RELOC_8, R_X86_64_8, }, | |
233 | { BFD_RELOC_8_PCREL, R_X86_64_PC8, }, | |
bffbf940 JJ |
234 | { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, }, |
235 | { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, }, | |
236 | { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, }, | |
237 | { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, }, | |
238 | { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, }, | |
239 | { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, }, | |
240 | { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, }, | |
241 | { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, }, | |
d6ab8113 JB |
242 | { BFD_RELOC_64_PCREL, R_X86_64_PC64, }, |
243 | { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, }, | |
244 | { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, }, | |
7b81dfbb AJ |
245 | { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, }, |
246 | { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, }, | |
247 | { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, }, | |
248 | { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, }, | |
249 | { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, }, | |
1788fc08 L |
250 | { BFD_RELOC_SIZE32, R_X86_64_SIZE32, }, |
251 | { BFD_RELOC_SIZE64, R_X86_64_SIZE64, }, | |
67a4f2b7 AO |
252 | { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, }, |
253 | { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, }, | |
254 | { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, }, | |
cbe950e9 | 255 | { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, }, |
56ceb5b5 L |
256 | { BFD_RELOC_X86_64_PC32_BND, R_X86_64_PC32_BND, }, |
257 | { BFD_RELOC_X86_64_PLT32_BND, R_X86_64_PLT32_BND, }, | |
258 | { BFD_RELOC_X86_64_GOTPCRELX, R_X86_64_GOTPCRELX, }, | |
259 | { BFD_RELOC_X86_64_REX_GOTPCRELX, R_X86_64_REX_GOTPCRELX, }, | |
fe4770f4 AJ |
260 | { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, }, |
261 | { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, }, | |
8d88c4ca NC |
262 | }; |
263 | ||
67a4f2b7 | 264 | static reloc_howto_type * |
351f65ca | 265 | elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type) |
67a4f2b7 AO |
266 | { |
267 | unsigned i; | |
268 | ||
d7921315 L |
269 | if (r_type == (unsigned int) R_X86_64_32) |
270 | { | |
271 | if (ABI_64_P (abfd)) | |
272 | i = r_type; | |
273 | else | |
274 | i = ARRAY_SIZE (x86_64_elf_howto_table) - 1; | |
275 | } | |
276 | else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT | |
277 | || r_type >= (unsigned int) R_X86_64_max) | |
67a4f2b7 AO |
278 | { |
279 | if (r_type >= (unsigned int) R_X86_64_standard) | |
280 | { | |
695344c0 | 281 | /* xgettext:c-format */ |
0aa13fee AM |
282 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
283 | abfd, r_type); | |
f3185997 NC |
284 | bfd_set_error (bfd_error_bad_value); |
285 | return NULL; | |
67a4f2b7 AO |
286 | } |
287 | i = r_type; | |
288 | } | |
289 | else | |
290 | i = r_type - (unsigned int) R_X86_64_vt_offset; | |
291 | BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type); | |
292 | return &x86_64_elf_howto_table[i]; | |
293 | } | |
8d88c4ca NC |
294 | |
295 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
296 | static reloc_howto_type * | |
351f65ca L |
297 | elf_x86_64_reloc_type_lookup (bfd *abfd, |
298 | bfd_reloc_code_real_type code) | |
8d88c4ca NC |
299 | { |
300 | unsigned int i; | |
27482721 | 301 | |
8d88c4ca NC |
302 | for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map); |
303 | i++) | |
304 | { | |
305 | if (x86_64_reloc_map[i].bfd_reloc_val == code) | |
351f65ca L |
306 | return elf_x86_64_rtype_to_howto (abfd, |
307 | x86_64_reloc_map[i].elf_reloc_val); | |
8d88c4ca | 308 | } |
5860e3f8 | 309 | return NULL; |
8d88c4ca NC |
310 | } |
311 | ||
157090f7 | 312 | static reloc_howto_type * |
d7921315 | 313 | elf_x86_64_reloc_name_lookup (bfd *abfd, |
351f65ca | 314 | const char *r_name) |
157090f7 AM |
315 | { |
316 | unsigned int i; | |
317 | ||
d7921315 L |
318 | if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0) |
319 | { | |
320 | /* Get x32 R_X86_64_32. */ | |
321 | reloc_howto_type *reloc | |
322 | = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1]; | |
323 | BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32); | |
324 | return reloc; | |
325 | } | |
326 | ||
327 | for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++) | |
157090f7 AM |
328 | if (x86_64_elf_howto_table[i].name != NULL |
329 | && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0) | |
330 | return &x86_64_elf_howto_table[i]; | |
331 | ||
332 | return NULL; | |
333 | } | |
334 | ||
8d88c4ca | 335 | /* Given an x86_64 ELF reloc type, fill in an arelent structure. */ |
8da6118f | 336 | |
f3185997 NC |
337 | static bfd_boolean |
338 | elf_x86_64_info_to_howto (bfd *abfd, arelent *cache_ptr, | |
351f65ca | 339 | Elf_Internal_Rela *dst) |
8d88c4ca | 340 | { |
67a4f2b7 | 341 | unsigned r_type; |
8d88c4ca | 342 | |
351f65ca L |
343 | r_type = ELF32_R_TYPE (dst->r_info); |
344 | cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type); | |
f3185997 NC |
345 | if (cache_ptr->howto == NULL) |
346 | return FALSE; | |
262c0a87 | 347 | BFD_ASSERT (r_type == cache_ptr->howto->type || cache_ptr->howto->type == R_X86_64_NONE); |
f3185997 | 348 | return TRUE; |
8d88c4ca | 349 | } |
70256ad8 | 350 | \f |
3bab7989 | 351 | /* Support for core dump NOTE sections. */ |
b34976b6 | 352 | static bfd_boolean |
351f65ca | 353 | elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
354 | { |
355 | int offset; | |
eea6121a | 356 | size_t size; |
3bab7989 ML |
357 | |
358 | switch (note->descsz) | |
359 | { | |
360 | default: | |
b34976b6 | 361 | return FALSE; |
3bab7989 | 362 | |
bcd823f1 L |
363 | case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */ |
364 | /* pr_cursig */ | |
228e534f | 365 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
bcd823f1 L |
366 | |
367 | /* pr_pid */ | |
228e534f | 368 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
bcd823f1 L |
369 | |
370 | /* pr_reg */ | |
371 | offset = 72; | |
372 | size = 216; | |
373 | ||
374 | break; | |
375 | ||
3bab7989 ML |
376 | case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */ |
377 | /* pr_cursig */ | |
228e534f | 378 | elf_tdata (abfd)->core->signal |
3bab7989 ML |
379 | = bfd_get_16 (abfd, note->descdata + 12); |
380 | ||
381 | /* pr_pid */ | |
228e534f | 382 | elf_tdata (abfd)->core->lwpid |
3bab7989 ML |
383 | = bfd_get_32 (abfd, note->descdata + 32); |
384 | ||
385 | /* pr_reg */ | |
386 | offset = 112; | |
eea6121a | 387 | size = 216; |
3bab7989 ML |
388 | |
389 | break; | |
390 | } | |
391 | ||
392 | /* Make a ".reg/999" section. */ | |
393 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 394 | size, note->descpos + offset); |
3bab7989 ML |
395 | } |
396 | ||
b34976b6 | 397 | static bfd_boolean |
351f65ca | 398 | elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
399 | { |
400 | switch (note->descsz) | |
401 | { | |
402 | default: | |
b34976b6 | 403 | return FALSE; |
3bab7989 | 404 | |
bcd823f1 | 405 | case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */ |
228e534f | 406 | elf_tdata (abfd)->core->pid |
bcd823f1 | 407 | = bfd_get_32 (abfd, note->descdata + 12); |
228e534f | 408 | elf_tdata (abfd)->core->program |
bcd823f1 | 409 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 410 | elf_tdata (abfd)->core->command |
bcd823f1 L |
411 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
412 | break; | |
413 | ||
3bab7989 | 414 | case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */ |
228e534f | 415 | elf_tdata (abfd)->core->pid |
261b8d08 | 416 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 417 | elf_tdata (abfd)->core->program |
3bab7989 | 418 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 419 | elf_tdata (abfd)->core->command |
3bab7989 ML |
420 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
421 | } | |
422 | ||
423 | /* Note that for some reason, a spurious space is tacked | |
424 | onto the end of the args in some (at least one anyway) | |
425 | implementations, so strip it off if it exists. */ | |
426 | ||
427 | { | |
228e534f | 428 | char *command = elf_tdata (abfd)->core->command; |
3bab7989 ML |
429 | int n = strlen (command); |
430 | ||
431 | if (0 < n && command[n - 1] == ' ') | |
432 | command[n - 1] = '\0'; | |
433 | } | |
434 | ||
b34976b6 | 435 | return TRUE; |
3bab7989 | 436 | } |
8fd79e71 L |
437 | |
438 | #ifdef CORE_HEADER | |
602f1657 AM |
439 | # if GCC_VERSION >= 8000 |
440 | # pragma GCC diagnostic push | |
441 | # pragma GCC diagnostic ignored "-Wstringop-truncation" | |
442 | # endif | |
8fd79e71 L |
443 | static char * |
444 | elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
445 | int note_type, ...) | |
446 | { | |
447 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8fd79e71 L |
448 | va_list ap; |
449 | const char *fname, *psargs; | |
450 | long pid; | |
451 | int cursig; | |
452 | const void *gregs; | |
453 | ||
454 | switch (note_type) | |
455 | { | |
456 | default: | |
457 | return NULL; | |
458 | ||
459 | case NT_PRPSINFO: | |
460 | va_start (ap, note_type); | |
461 | fname = va_arg (ap, const char *); | |
462 | psargs = va_arg (ap, const char *); | |
463 | va_end (ap); | |
464 | ||
465 | if (bed->s->elfclass == ELFCLASS32) | |
466 | { | |
467 | prpsinfo32_t data; | |
468 | memset (&data, 0, sizeof (data)); | |
469 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
470 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
e85c6a70 JK |
471 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
472 | &data, sizeof (data)); | |
8fd79e71 L |
473 | } |
474 | else | |
475 | { | |
b1bd052d | 476 | prpsinfo64_t data; |
8fd79e71 L |
477 | memset (&data, 0, sizeof (data)); |
478 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
479 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
e85c6a70 JK |
480 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
481 | &data, sizeof (data)); | |
8fd79e71 | 482 | } |
e85c6a70 | 483 | /* NOTREACHED */ |
8fd79e71 L |
484 | |
485 | case NT_PRSTATUS: | |
486 | va_start (ap, note_type); | |
487 | pid = va_arg (ap, long); | |
488 | cursig = va_arg (ap, int); | |
489 | gregs = va_arg (ap, const void *); | |
490 | va_end (ap); | |
491 | ||
492 | if (bed->s->elfclass == ELFCLASS32) | |
493 | { | |
494 | if (bed->elf_machine_code == EM_X86_64) | |
495 | { | |
496 | prstatusx32_t prstat; | |
497 | memset (&prstat, 0, sizeof (prstat)); | |
498 | prstat.pr_pid = pid; | |
499 | prstat.pr_cursig = cursig; | |
500 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
501 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
502 | &prstat, sizeof (prstat)); | |
8fd79e71 L |
503 | } |
504 | else | |
505 | { | |
506 | prstatus32_t prstat; | |
507 | memset (&prstat, 0, sizeof (prstat)); | |
508 | prstat.pr_pid = pid; | |
509 | prstat.pr_cursig = cursig; | |
510 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
511 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
512 | &prstat, sizeof (prstat)); | |
8fd79e71 L |
513 | } |
514 | } | |
515 | else | |
516 | { | |
b1bd052d | 517 | prstatus64_t prstat; |
8fd79e71 L |
518 | memset (&prstat, 0, sizeof (prstat)); |
519 | prstat.pr_pid = pid; | |
520 | prstat.pr_cursig = cursig; | |
521 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
522 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
523 | &prstat, sizeof (prstat)); | |
8fd79e71 | 524 | } |
8fd79e71 | 525 | } |
e85c6a70 | 526 | /* NOTREACHED */ |
8fd79e71 | 527 | } |
602f1657 AM |
528 | # if GCC_VERSION >= 8000 |
529 | # pragma GCC diagnostic pop | |
530 | # endif | |
8fd79e71 | 531 | #endif |
3bab7989 | 532 | \f |
407443a3 | 533 | /* Functions for the x86-64 ELF linker. */ |
70256ad8 | 534 | |
70256ad8 AJ |
535 | /* The size in bytes of an entry in the global offset table. */ |
536 | ||
537 | #define GOT_ENTRY_SIZE 8 | |
8d88c4ca | 538 | |
38b12349 | 539 | /* The size in bytes of an entry in the lazy procedure linkage table. */ |
8d88c4ca | 540 | |
38b12349 | 541 | #define LAZY_PLT_ENTRY_SIZE 16 |
70256ad8 | 542 | |
38b12349 L |
543 | /* The size in bytes of an entry in the non-lazy procedure linkage |
544 | table. */ | |
70256ad8 | 545 | |
38b12349 L |
546 | #define NON_LAZY_PLT_ENTRY_SIZE 8 |
547 | ||
548 | /* The first entry in a lazy procedure linkage table looks like this. | |
549 | See the SVR4 ABI i386 supplement and the x86-64 ABI to see how this | |
550 | works. */ | |
551 | ||
552 | static const bfd_byte elf_x86_64_lazy_plt0_entry[LAZY_PLT_ENTRY_SIZE] = | |
70256ad8 | 553 | { |
653165cc AJ |
554 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ |
555 | 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */ | |
10efb593 | 556 | 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */ |
70256ad8 AJ |
557 | }; |
558 | ||
38b12349 | 559 | /* Subsequent entries in a lazy procedure linkage table look like this. */ |
70256ad8 | 560 | |
38b12349 | 561 | static const bfd_byte elf_x86_64_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] = |
70256ad8 | 562 | { |
653165cc | 563 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ |
407443a3 | 564 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ |
653165cc | 565 | 0x68, /* pushq immediate */ |
70256ad8 AJ |
566 | 0, 0, 0, 0, /* replaced with index into relocation table. */ |
567 | 0xe9, /* jmp relative */ | |
568 | 0, 0, 0, 0 /* replaced with offset to start of .plt0. */ | |
569 | }; | |
570 | ||
38b12349 | 571 | /* The first entry in a lazy procedure linkage table with BND prefix |
0ff2b86e L |
572 | like this. */ |
573 | ||
38b12349 | 574 | static const bfd_byte elf_x86_64_lazy_bnd_plt0_entry[LAZY_PLT_ENTRY_SIZE] = |
0ff2b86e | 575 | { |
07d6d2b8 | 576 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ |
0ff2b86e | 577 | 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */ |
07d6d2b8 | 578 | 0x0f, 0x1f, 0 /* nopl (%rax) */ |
0ff2b86e L |
579 | }; |
580 | ||
38b12349 L |
581 | /* Subsequent entries for branches with BND prefx in a lazy procedure |
582 | linkage table look like this. */ | |
0ff2b86e | 583 | |
38b12349 | 584 | static const bfd_byte elf_x86_64_lazy_bnd_plt_entry[LAZY_PLT_ENTRY_SIZE] = |
0ff2b86e | 585 | { |
07d6d2b8 AM |
586 | 0x68, 0, 0, 0, 0, /* pushq immediate */ |
587 | 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */ | |
588 | 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */ | |
0ff2b86e L |
589 | }; |
590 | ||
ee2fdd6f L |
591 | /* The first entry in the IBT-enabled lazy procedure linkage table is the |
592 | the same as the lazy PLT with BND prefix so that bound registers are | |
593 | preserved when control is passed to dynamic linker. Subsequent | |
594 | entries for a IBT-enabled lazy procedure linkage table look like | |
595 | this. */ | |
596 | ||
597 | static const bfd_byte elf_x86_64_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] = | |
598 | { | |
07d6d2b8 AM |
599 | 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */ |
600 | 0x68, 0, 0, 0, 0, /* pushq immediate */ | |
601 | 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */ | |
602 | 0x90 /* nop */ | |
ee2fdd6f L |
603 | }; |
604 | ||
605 | /* The first entry in the x32 IBT-enabled lazy procedure linkage table | |
de194d85 | 606 | is the same as the normal lazy PLT. Subsequent entries for an |
ee2fdd6f L |
607 | x32 IBT-enabled lazy procedure linkage table look like this. */ |
608 | ||
609 | static const bfd_byte elf_x32_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] = | |
610 | { | |
07d6d2b8 AM |
611 | 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */ |
612 | 0x68, 0, 0, 0, 0, /* pushq immediate */ | |
613 | 0xe9, 0, 0, 0, 0, /* jmpq relative */ | |
614 | 0x66, 0x90 /* xchg %ax,%ax */ | |
ee2fdd6f L |
615 | }; |
616 | ||
38b12349 | 617 | /* Entries in the non-lazey procedure linkage table look like this. */ |
0ff2b86e | 618 | |
38b12349 | 619 | static const bfd_byte elf_x86_64_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] = |
0ff2b86e | 620 | { |
07d6d2b8 AM |
621 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ |
622 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ | |
623 | 0x66, 0x90 /* xchg %ax,%ax */ | |
0ff2b86e L |
624 | }; |
625 | ||
38b12349 L |
626 | /* Entries for branches with BND prefix in the non-lazey procedure |
627 | linkage table look like this. */ | |
0ff2b86e | 628 | |
38b12349 | 629 | static const bfd_byte elf_x86_64_non_lazy_bnd_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] = |
0ff2b86e | 630 | { |
07d6d2b8 AM |
631 | 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */ |
632 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ | |
633 | 0x90 /* nop */ | |
0ff2b86e L |
634 | }; |
635 | ||
ee2fdd6f L |
636 | /* Entries for branches with IBT-enabled in the non-lazey procedure |
637 | linkage table look like this. They have the same size as the lazy | |
638 | PLT entry. */ | |
639 | ||
640 | static const bfd_byte elf_x86_64_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] = | |
641 | { | |
07d6d2b8 AM |
642 | 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */ |
643 | 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */ | |
ee2fdd6f | 644 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ |
07d6d2b8 | 645 | 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopl 0x0(%rax,%rax,1) */ |
ee2fdd6f L |
646 | }; |
647 | ||
648 | /* Entries for branches with IBT-enabled in the x32 non-lazey procedure | |
649 | linkage table look like this. They have the same size as the lazy | |
650 | PLT entry. */ | |
651 | ||
652 | static const bfd_byte elf_x32_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] = | |
653 | { | |
07d6d2b8 AM |
654 | 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */ |
655 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ | |
ee2fdd6f L |
656 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ |
657 | 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */ | |
658 | }; | |
659 | ||
92e68c1d L |
660 | /* The TLSDESC entry in a lazy procedure linkage table. */ |
661 | static const bfd_byte elf_x86_64_tlsdesc_plt_entry[LAZY_PLT_ENTRY_SIZE] = | |
662 | { | |
663 | 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */ | |
664 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ | |
665 | 0xff, 0x25, 16, 0, 0, 0 /* jmpq *GOT+TDG(%rip) */ | |
666 | }; | |
667 | ||
38b12349 | 668 | /* .eh_frame covering the lazy .plt section. */ |
e41b3a13 | 669 | |
38b12349 | 670 | static const bfd_byte elf_x86_64_eh_frame_lazy_plt[] = |
e41b3a13 | 671 | { |
e41b3a13 JJ |
672 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ |
673 | 0, 0, 0, 0, /* CIE ID */ | |
674 | 1, /* CIE version */ | |
675 | 'z', 'R', 0, /* Augmentation string */ | |
676 | 1, /* Code alignment factor */ | |
677 | 0x78, /* Data alignment factor */ | |
678 | 16, /* Return address column */ | |
679 | 1, /* Augmentation size */ | |
680 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
681 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
682 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
683 | DW_CFA_nop, DW_CFA_nop, | |
684 | ||
685 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
686 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
687 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
688 | 0, 0, 0, 0, /* .plt size goes here */ | |
689 | 0, /* Augmentation size */ | |
690 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
691 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
692 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
693 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
694 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
695 | 11, /* Block length */ | |
696 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
697 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
698 | DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge, | |
699 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
700 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
701 | }; | |
702 | ||
38b12349 | 703 | /* .eh_frame covering the lazy BND .plt section. */ |
9e659176 | 704 | |
38b12349 | 705 | static const bfd_byte elf_x86_64_eh_frame_lazy_bnd_plt[] = |
9e659176 L |
706 | { |
707 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
708 | 0, 0, 0, 0, /* CIE ID */ | |
709 | 1, /* CIE version */ | |
710 | 'z', 'R', 0, /* Augmentation string */ | |
711 | 1, /* Code alignment factor */ | |
712 | 0x78, /* Data alignment factor */ | |
713 | 16, /* Return address column */ | |
714 | 1, /* Augmentation size */ | |
715 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
716 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
717 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
718 | DW_CFA_nop, DW_CFA_nop, | |
719 | ||
720 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
721 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
722 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
723 | 0, 0, 0, 0, /* .plt size goes here */ | |
724 | 0, /* Augmentation size */ | |
725 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
726 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
727 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
728 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
729 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
730 | 11, /* Block length */ | |
731 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
732 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
733 | DW_OP_lit15, DW_OP_and, DW_OP_lit5, DW_OP_ge, | |
734 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
735 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
736 | }; | |
737 | ||
ee2fdd6f L |
738 | /* .eh_frame covering the lazy .plt section with IBT-enabled. */ |
739 | ||
740 | static const bfd_byte elf_x86_64_eh_frame_lazy_ibt_plt[] = | |
741 | { | |
742 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
743 | 0, 0, 0, 0, /* CIE ID */ | |
744 | 1, /* CIE version */ | |
745 | 'z', 'R', 0, /* Augmentation string */ | |
746 | 1, /* Code alignment factor */ | |
747 | 0x78, /* Data alignment factor */ | |
748 | 16, /* Return address column */ | |
749 | 1, /* Augmentation size */ | |
750 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
751 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
752 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
753 | DW_CFA_nop, DW_CFA_nop, | |
754 | ||
755 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
756 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
757 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
758 | 0, 0, 0, 0, /* .plt size goes here */ | |
759 | 0, /* Augmentation size */ | |
760 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
761 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
762 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
763 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
764 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
765 | 11, /* Block length */ | |
766 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
767 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
768 | DW_OP_lit15, DW_OP_and, DW_OP_lit10, DW_OP_ge, | |
769 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
770 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
771 | }; | |
772 | ||
773 | /* .eh_frame covering the x32 lazy .plt section with IBT-enabled. */ | |
774 | ||
775 | static const bfd_byte elf_x32_eh_frame_lazy_ibt_plt[] = | |
776 | { | |
777 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
778 | 0, 0, 0, 0, /* CIE ID */ | |
779 | 1, /* CIE version */ | |
780 | 'z', 'R', 0, /* Augmentation string */ | |
781 | 1, /* Code alignment factor */ | |
782 | 0x78, /* Data alignment factor */ | |
783 | 16, /* Return address column */ | |
784 | 1, /* Augmentation size */ | |
785 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
786 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
787 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
788 | DW_CFA_nop, DW_CFA_nop, | |
789 | ||
790 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
791 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
792 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
793 | 0, 0, 0, 0, /* .plt size goes here */ | |
794 | 0, /* Augmentation size */ | |
795 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
796 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
797 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
798 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
799 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
800 | 11, /* Block length */ | |
801 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
802 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
803 | DW_OP_lit15, DW_OP_and, DW_OP_lit9, DW_OP_ge, | |
804 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
805 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
806 | }; | |
807 | ||
38b12349 | 808 | /* .eh_frame covering the non-lazy .plt section. */ |
fff53dae | 809 | |
38b12349 | 810 | static const bfd_byte elf_x86_64_eh_frame_non_lazy_plt[] = |
fff53dae L |
811 | { |
812 | #define PLT_GOT_FDE_LENGTH 20 | |
813 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
814 | 0, 0, 0, 0, /* CIE ID */ | |
815 | 1, /* CIE version */ | |
816 | 'z', 'R', 0, /* Augmentation string */ | |
817 | 1, /* Code alignment factor */ | |
818 | 0x78, /* Data alignment factor */ | |
819 | 16, /* Return address column */ | |
820 | 1, /* Augmentation size */ | |
821 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
822 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
823 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
824 | DW_CFA_nop, DW_CFA_nop, | |
825 | ||
826 | PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
827 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
38b12349 L |
828 | 0, 0, 0, 0, /* the start of non-lazy .plt goes here */ |
829 | 0, 0, 0, 0, /* non-lazy .plt size goes here */ | |
fff53dae L |
830 | 0, /* Augmentation size */ |
831 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, | |
832 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
833 | }; | |
834 | ||
eed180f8 | 835 | /* These are the standard parameters. */ |
765e526c | 836 | static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_plt = |
eed180f8 | 837 | { |
07d6d2b8 AM |
838 | elf_x86_64_lazy_plt0_entry, /* plt0_entry */ |
839 | LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */ | |
840 | elf_x86_64_lazy_plt_entry, /* plt_entry */ | |
841 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
92e68c1d L |
842 | elf_x86_64_tlsdesc_plt_entry, /* plt_tlsdesc_entry */ |
843 | LAZY_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */ | |
844 | 6, /* plt_tlsdesc_got1_offset */ | |
845 | 12, /* plt_tlsdesc_got2_offset */ | |
846 | 10, /* plt_tlsdesc_got1_insn_end */ | |
847 | 16, /* plt_tlsdesc_got2_insn_end */ | |
07d6d2b8 AM |
848 | 2, /* plt0_got1_offset */ |
849 | 8, /* plt0_got2_offset */ | |
850 | 12, /* plt0_got2_insn_end */ | |
851 | 2, /* plt_got_offset */ | |
852 | 7, /* plt_reloc_offset */ | |
853 | 12, /* plt_plt_offset */ | |
854 | 6, /* plt_got_insn_size */ | |
855 | LAZY_PLT_ENTRY_SIZE, /* plt_plt_insn_end */ | |
856 | 6, /* plt_lazy_offset */ | |
857 | elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */ | |
858 | elf_x86_64_lazy_plt_entry, /* pic_plt_entry */ | |
859 | elf_x86_64_eh_frame_lazy_plt, /* eh_frame_plt */ | |
38b12349 L |
860 | sizeof (elf_x86_64_eh_frame_lazy_plt) /* eh_frame_plt_size */ |
861 | }; | |
862 | ||
765e526c | 863 | static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_plt = |
38b12349 | 864 | { |
07d6d2b8 AM |
865 | elf_x86_64_non_lazy_plt_entry, /* plt_entry */ |
866 | elf_x86_64_non_lazy_plt_entry, /* pic_plt_entry */ | |
867 | NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
868 | 2, /* plt_got_offset */ | |
869 | 6, /* plt_got_insn_size */ | |
870 | elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */ | |
38b12349 | 871 | sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */ |
eed180f8 RM |
872 | }; |
873 | ||
765e526c | 874 | static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_bnd_plt = |
0ff2b86e | 875 | { |
07d6d2b8 AM |
876 | elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */ |
877 | LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */ | |
878 | elf_x86_64_lazy_bnd_plt_entry, /* plt_entry */ | |
879 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
92e68c1d L |
880 | elf_x86_64_tlsdesc_plt_entry, /* plt_tlsdesc_entry */ |
881 | LAZY_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */ | |
882 | 6, /* plt_tlsdesc_got1_offset */ | |
883 | 12, /* plt_tlsdesc_got2_offset */ | |
884 | 10, /* plt_tlsdesc_got1_insn_end */ | |
885 | 16, /* plt_tlsdesc_got2_insn_end */ | |
07d6d2b8 AM |
886 | 2, /* plt0_got1_offset */ |
887 | 1+8, /* plt0_got2_offset */ | |
888 | 1+12, /* plt0_got2_insn_end */ | |
889 | 1+2, /* plt_got_offset */ | |
890 | 1, /* plt_reloc_offset */ | |
891 | 7, /* plt_plt_offset */ | |
892 | 1+6, /* plt_got_insn_size */ | |
893 | 11, /* plt_plt_insn_end */ | |
894 | 0, /* plt_lazy_offset */ | |
895 | elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */ | |
896 | elf_x86_64_lazy_bnd_plt_entry, /* pic_plt_entry */ | |
897 | elf_x86_64_eh_frame_lazy_bnd_plt, /* eh_frame_plt */ | |
38b12349 L |
898 | sizeof (elf_x86_64_eh_frame_lazy_bnd_plt) /* eh_frame_plt_size */ |
899 | }; | |
900 | ||
765e526c | 901 | static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_bnd_plt = |
38b12349 | 902 | { |
07d6d2b8 AM |
903 | elf_x86_64_non_lazy_bnd_plt_entry, /* plt_entry */ |
904 | elf_x86_64_non_lazy_bnd_plt_entry, /* pic_plt_entry */ | |
905 | NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
906 | 1+2, /* plt_got_offset */ | |
907 | 1+6, /* plt_got_insn_size */ | |
908 | elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */ | |
38b12349 L |
909 | sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */ |
910 | }; | |
911 | ||
765e526c | 912 | static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_ibt_plt = |
ee2fdd6f | 913 | { |
07d6d2b8 AM |
914 | elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */ |
915 | LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */ | |
916 | elf_x86_64_lazy_ibt_plt_entry, /* plt_entry */ | |
917 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
92e68c1d L |
918 | elf_x86_64_tlsdesc_plt_entry, /* plt_tlsdesc_entry */ |
919 | LAZY_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */ | |
920 | 6, /* plt_tlsdesc_got1_offset */ | |
921 | 12, /* plt_tlsdesc_got2_offset */ | |
922 | 10, /* plt_tlsdesc_got1_insn_end */ | |
923 | 16, /* plt_tlsdesc_got2_insn_end */ | |
07d6d2b8 AM |
924 | 2, /* plt0_got1_offset */ |
925 | 1+8, /* plt0_got2_offset */ | |
926 | 1+12, /* plt0_got2_insn_end */ | |
927 | 4+1+2, /* plt_got_offset */ | |
928 | 4+1, /* plt_reloc_offset */ | |
929 | 4+1+6, /* plt_plt_offset */ | |
930 | 4+1+6, /* plt_got_insn_size */ | |
931 | 4+1+5+5, /* plt_plt_insn_end */ | |
932 | 0, /* plt_lazy_offset */ | |
933 | elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */ | |
934 | elf_x86_64_lazy_ibt_plt_entry, /* pic_plt_entry */ | |
935 | elf_x86_64_eh_frame_lazy_ibt_plt, /* eh_frame_plt */ | |
ee2fdd6f L |
936 | sizeof (elf_x86_64_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */ |
937 | }; | |
938 | ||
765e526c | 939 | static const struct elf_x86_lazy_plt_layout elf_x32_lazy_ibt_plt = |
ee2fdd6f | 940 | { |
07d6d2b8 AM |
941 | elf_x86_64_lazy_plt0_entry, /* plt0_entry */ |
942 | LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */ | |
943 | elf_x32_lazy_ibt_plt_entry, /* plt_entry */ | |
944 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
92e68c1d L |
945 | elf_x86_64_tlsdesc_plt_entry, /* plt_tlsdesc_entry */ |
946 | LAZY_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */ | |
947 | 6, /* plt_tlsdesc_got1_offset */ | |
948 | 12, /* plt_tlsdesc_got2_offset */ | |
949 | 10, /* plt_tlsdesc_got1_insn_end */ | |
950 | 16, /* plt_tlsdesc_got2_insn_end */ | |
07d6d2b8 AM |
951 | 2, /* plt0_got1_offset */ |
952 | 8, /* plt0_got2_offset */ | |
953 | 12, /* plt0_got2_insn_end */ | |
954 | 4+2, /* plt_got_offset */ | |
955 | 4+1, /* plt_reloc_offset */ | |
956 | 4+6, /* plt_plt_offset */ | |
957 | 4+6, /* plt_got_insn_size */ | |
958 | 4+5+5, /* plt_plt_insn_end */ | |
959 | 0, /* plt_lazy_offset */ | |
960 | elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */ | |
961 | elf_x32_lazy_ibt_plt_entry, /* pic_plt_entry */ | |
962 | elf_x32_eh_frame_lazy_ibt_plt, /* eh_frame_plt */ | |
ee2fdd6f L |
963 | sizeof (elf_x32_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */ |
964 | }; | |
965 | ||
765e526c | 966 | static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_ibt_plt = |
ee2fdd6f | 967 | { |
07d6d2b8 AM |
968 | elf_x86_64_non_lazy_ibt_plt_entry, /* plt_entry */ |
969 | elf_x86_64_non_lazy_ibt_plt_entry, /* pic_plt_entry */ | |
970 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
971 | 4+1+2, /* plt_got_offset */ | |
972 | 4+1+6, /* plt_got_insn_size */ | |
973 | elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */ | |
ee2fdd6f L |
974 | sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */ |
975 | }; | |
976 | ||
765e526c | 977 | static const struct elf_x86_non_lazy_plt_layout elf_x32_non_lazy_ibt_plt = |
ee2fdd6f | 978 | { |
07d6d2b8 AM |
979 | elf_x32_non_lazy_ibt_plt_entry, /* plt_entry */ |
980 | elf_x32_non_lazy_ibt_plt_entry, /* pic_plt_entry */ | |
981 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
982 | 4+2, /* plt_got_offset */ | |
983 | 4+6, /* plt_got_insn_size */ | |
984 | elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */ | |
ee2fdd6f L |
985 | sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */ |
986 | }; | |
987 | ||
851b6fa1 | 988 | static const struct elf_x86_backend_data elf_x86_64_arch_bed = |
38b12349 | 989 | { |
07d6d2b8 | 990 | is_normal /* os */ |
0ff2b86e L |
991 | }; |
992 | ||
eed180f8 RM |
993 | #define elf_backend_arch_data &elf_x86_64_arch_bed |
994 | ||
b34976b6 | 995 | static bfd_boolean |
27482721 | 996 | elf64_x86_64_elf_object_p (bfd *abfd) |
bffbf940 | 997 | { |
8d88c4ca NC |
998 | /* Set the right machine number for an x86-64 elf64 file. */ |
999 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); | |
b34976b6 | 1000 | return TRUE; |
8d88c4ca NC |
1001 | } |
1002 | ||
8059fb19 RM |
1003 | static bfd_boolean |
1004 | elf32_x86_64_elf_object_p (bfd *abfd) | |
1005 | { | |
1006 | /* Set the right machine number for an x86-64 elf32 file. */ | |
1007 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32); | |
1008 | return TRUE; | |
1009 | } | |
1010 | ||
142411ca L |
1011 | /* Return TRUE if the TLS access code sequence support transition |
1012 | from R_TYPE. */ | |
1013 | ||
1014 | static bfd_boolean | |
351f65ca L |
1015 | elf_x86_64_check_tls_transition (bfd *abfd, |
1016 | struct bfd_link_info *info, | |
1017 | asection *sec, | |
1018 | bfd_byte *contents, | |
1019 | Elf_Internal_Shdr *symtab_hdr, | |
1020 | struct elf_link_hash_entry **sym_hashes, | |
1021 | unsigned int r_type, | |
1022 | const Elf_Internal_Rela *rel, | |
1023 | const Elf_Internal_Rela *relend) | |
bffbf940 | 1024 | { |
142411ca L |
1025 | unsigned int val; |
1026 | unsigned long r_symndx; | |
5c98a14e | 1027 | bfd_boolean largepic = FALSE; |
142411ca L |
1028 | struct elf_link_hash_entry *h; |
1029 | bfd_vma offset; | |
0afcef53 | 1030 | struct elf_x86_link_hash_table *htab; |
e2cbcd91 | 1031 | bfd_byte *call; |
1d4af308 | 1032 | bfd_boolean indirect_call; |
142411ca | 1033 | |
0afcef53 | 1034 | htab = elf_x86_hash_table (info, X86_64_ELF_DATA); |
142411ca | 1035 | offset = rel->r_offset; |
bffbf940 | 1036 | switch (r_type) |
142411ca L |
1037 | { |
1038 | case R_X86_64_TLSGD: | |
1039 | case R_X86_64_TLSLD: | |
1040 | if ((rel + 1) >= relend) | |
1041 | return FALSE; | |
1042 | ||
1043 | if (r_type == R_X86_64_TLSGD) | |
1044 | { | |
52bc799a | 1045 | /* Check transition from GD access model. For 64bit, only |
142411ca | 1046 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
e2cbcd91 L |
1047 | .word 0x6666; rex64; call __tls_get_addr@PLT |
1048 | or | |
1049 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi | |
1050 | .byte 0x66; rex64 | |
1051 | call *__tls_get_addr@GOTPCREL(%rip) | |
1052 | which may be converted to | |
1053 | addr32 call __tls_get_addr | |
52bc799a L |
1054 | can transit to different access model. For 32bit, only |
1055 | leaq foo@tlsgd(%rip), %rdi | |
e2cbcd91 L |
1056 | .word 0x6666; rex64; call __tls_get_addr@PLT |
1057 | or | |
1058 | leaq foo@tlsgd(%rip), %rdi | |
1059 | .byte 0x66; rex64 | |
1060 | call *__tls_get_addr@GOTPCREL(%rip) | |
1061 | which may be converted to | |
1062 | addr32 call __tls_get_addr | |
1063 | can transit to different access model. For largepic, | |
5c98a14e | 1064 | we also support: |
07d6d2b8 AM |
1065 | leaq foo@tlsgd(%rip), %rdi |
1066 | movabsq $__tls_get_addr@pltoff, %rax | |
1067 | addq $r15, %rax | |
1068 | call *%rax | |
e2cbcd91 | 1069 | or |
07d6d2b8 AM |
1070 | leaq foo@tlsgd(%rip), %rdi |
1071 | movabsq $__tls_get_addr@pltoff, %rax | |
1072 | addq $rbx, %rax | |
1073 | call *%rax */ | |
142411ca | 1074 | |
fa289a5f AM |
1075 | static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d }; |
1076 | ||
5c98a14e | 1077 | if ((offset + 12) > sec->size) |
142411ca | 1078 | return FALSE; |
52bc799a | 1079 | |
e2cbcd91 L |
1080 | call = contents + offset + 4; |
1081 | if (call[0] != 0x66 | |
1082 | || !((call[1] == 0x48 | |
1083 | && call[2] == 0xff | |
1084 | && call[3] == 0x15) | |
1085 | || (call[1] == 0x48 | |
1086 | && call[2] == 0x67 | |
1087 | && call[3] == 0xe8) | |
1088 | || (call[1] == 0x66 | |
1089 | && call[2] == 0x48 | |
1090 | && call[3] == 0xe8))) | |
5c98a14e JJ |
1091 | { |
1092 | if (!ABI_64_P (abfd) | |
1093 | || (offset + 19) > sec->size | |
1094 | || offset < 3 | |
e2cbcd91 L |
1095 | || memcmp (call - 7, leaq + 1, 3) != 0 |
1096 | || memcmp (call, "\x48\xb8", 2) != 0 | |
1097 | || call[11] != 0x01 | |
1098 | || call[13] != 0xff | |
1099 | || call[14] != 0xd0 | |
1100 | || !((call[10] == 0x48 && call[12] == 0xd8) | |
1101 | || (call[10] == 0x4c && call[12] == 0xf8))) | |
5c98a14e JJ |
1102 | return FALSE; |
1103 | largepic = TRUE; | |
1104 | } | |
1105 | else if (ABI_64_P (abfd)) | |
52bc799a | 1106 | { |
52bc799a | 1107 | if (offset < 4 |
fa289a5f | 1108 | || memcmp (contents + offset - 4, leaq, 4) != 0) |
52bc799a L |
1109 | return FALSE; |
1110 | } | |
1111 | else | |
1112 | { | |
52bc799a | 1113 | if (offset < 3 |
fa289a5f | 1114 | || memcmp (contents + offset - 3, leaq + 1, 3) != 0) |
52bc799a L |
1115 | return FALSE; |
1116 | } | |
e2cbcd91 | 1117 | indirect_call = call[2] == 0xff; |
142411ca L |
1118 | } |
1119 | else | |
1120 | { | |
1121 | /* Check transition from LD access model. Only | |
1122 | leaq foo@tlsld(%rip), %rdi; | |
e2cbcd91 | 1123 | call __tls_get_addr@PLT |
07d6d2b8 | 1124 | or |
e2cbcd91 L |
1125 | leaq foo@tlsld(%rip), %rdi; |
1126 | call *__tls_get_addr@GOTPCREL(%rip) | |
1127 | which may be converted to | |
1128 | addr32 call __tls_get_addr | |
5c98a14e JJ |
1129 | can transit to different access model. For largepic |
1130 | we also support: | |
07d6d2b8 AM |
1131 | leaq foo@tlsld(%rip), %rdi |
1132 | movabsq $__tls_get_addr@pltoff, %rax | |
1133 | addq $r15, %rax | |
1134 | call *%rax | |
e2cbcd91 | 1135 | or |
07d6d2b8 AM |
1136 | leaq foo@tlsld(%rip), %rdi |
1137 | movabsq $__tls_get_addr@pltoff, %rax | |
1138 | addq $rbx, %rax | |
1139 | call *%rax */ | |
142411ca | 1140 | |
fa289a5f | 1141 | static const unsigned char lea[] = { 0x48, 0x8d, 0x3d }; |
142411ca L |
1142 | |
1143 | if (offset < 3 || (offset + 9) > sec->size) | |
1144 | return FALSE; | |
1145 | ||
5c98a14e | 1146 | if (memcmp (contents + offset - 3, lea, 3) != 0) |
142411ca | 1147 | return FALSE; |
5c98a14e | 1148 | |
e2cbcd91 L |
1149 | call = contents + offset + 4; |
1150 | if (!(call[0] == 0xe8 | |
1151 | || (call[0] == 0xff && call[1] == 0x15) | |
1152 | || (call[0] == 0x67 && call[1] == 0xe8))) | |
5c98a14e JJ |
1153 | { |
1154 | if (!ABI_64_P (abfd) | |
1155 | || (offset + 19) > sec->size | |
e2cbcd91 L |
1156 | || memcmp (call, "\x48\xb8", 2) != 0 |
1157 | || call[11] != 0x01 | |
1158 | || call[13] != 0xff | |
1159 | || call[14] != 0xd0 | |
1160 | || !((call[10] == 0x48 && call[12] == 0xd8) | |
1161 | || (call[10] == 0x4c && call[12] == 0xf8))) | |
5c98a14e JJ |
1162 | return FALSE; |
1163 | largepic = TRUE; | |
1164 | } | |
e2cbcd91 | 1165 | indirect_call = call[0] == 0xff; |
142411ca L |
1166 | } |
1167 | ||
351f65ca | 1168 | r_symndx = htab->r_sym (rel[1].r_info); |
142411ca L |
1169 | if (r_symndx < symtab_hdr->sh_info) |
1170 | return FALSE; | |
1171 | ||
1172 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1d4af308 | 1173 | if (h == NULL |
0afcef53 | 1174 | || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr) |
e2cbcd91 | 1175 | return FALSE; |
e2cbcd91 | 1176 | else |
78984959 L |
1177 | { |
1178 | r_type = (ELF32_R_TYPE (rel[1].r_info) | |
1179 | & ~R_X86_64_converted_reloc_bit); | |
1180 | if (largepic) | |
1181 | return r_type == R_X86_64_PLTOFF64; | |
1182 | else if (indirect_call) | |
1183 | return r_type == R_X86_64_GOTPCRELX; | |
1184 | else | |
1185 | return (r_type == R_X86_64_PC32 || r_type == R_X86_64_PLT32); | |
1186 | } | |
142411ca L |
1187 | |
1188 | case R_X86_64_GOTTPOFF: | |
1189 | /* Check transition from IE access model: | |
4a4c5f25 L |
1190 | mov foo@gottpoff(%rip), %reg |
1191 | add foo@gottpoff(%rip), %reg | |
142411ca L |
1192 | */ |
1193 | ||
4a4c5f25 L |
1194 | /* Check REX prefix first. */ |
1195 | if (offset >= 3 && (offset + 4) <= sec->size) | |
1196 | { | |
1197 | val = bfd_get_8 (abfd, contents + offset - 3); | |
1198 | if (val != 0x48 && val != 0x4c) | |
1199 | { | |
1200 | /* X32 may have 0x44 REX prefix or no REX prefix. */ | |
1201 | if (ABI_64_P (abfd)) | |
1202 | return FALSE; | |
1203 | } | |
1204 | } | |
1205 | else | |
1206 | { | |
1207 | /* X32 may not have any REX prefix. */ | |
1208 | if (ABI_64_P (abfd)) | |
1209 | return FALSE; | |
1210 | if (offset < 2 || (offset + 3) > sec->size) | |
1211 | return FALSE; | |
1212 | } | |
142411ca L |
1213 | |
1214 | val = bfd_get_8 (abfd, contents + offset - 2); | |
1215 | if (val != 0x8b && val != 0x03) | |
1216 | return FALSE; | |
1217 | ||
1218 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1219 | return (val & 0xc7) == 5; | |
1220 | ||
1221 | case R_X86_64_GOTPC32_TLSDESC: | |
1222 | /* Check transition from GDesc access model: | |
14470f07 L |
1223 | leaq x@tlsdesc(%rip), %rax <--- LP64 mode. |
1224 | rex leal x@tlsdesc(%rip), %eax <--- X32 mode. | |
142411ca L |
1225 | |
1226 | Make sure it's a leaq adding rip to a 32-bit offset | |
1227 | into any register, although it's probably almost always | |
1228 | going to be rax. */ | |
1229 | ||
1230 | if (offset < 3 || (offset + 4) > sec->size) | |
1231 | return FALSE; | |
1232 | ||
1233 | val = bfd_get_8 (abfd, contents + offset - 3); | |
14470f07 L |
1234 | val &= 0xfb; |
1235 | if (val != 0x48 && (ABI_64_P (abfd) || val != 0x40)) | |
142411ca L |
1236 | return FALSE; |
1237 | ||
1238 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1239 | return FALSE; | |
1240 | ||
1241 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1242 | return (val & 0xc7) == 0x05; | |
1243 | ||
1244 | case R_X86_64_TLSDESC_CALL: | |
1245 | /* Check transition from GDesc access model: | |
14470f07 L |
1246 | call *x@tlsdesc(%rax) <--- LP64 mode. |
1247 | call *x@tlsdesc(%eax) <--- X32 mode. | |
142411ca L |
1248 | */ |
1249 | if (offset + 2 <= sec->size) | |
1250 | { | |
14470f07 | 1251 | unsigned int prefix; |
e2cbcd91 | 1252 | call = contents + offset; |
14470f07 L |
1253 | prefix = 0; |
1254 | if (!ABI_64_P (abfd)) | |
1255 | { | |
1256 | /* Check for call *x@tlsdesc(%eax). */ | |
1257 | if (call[0] == 0x67) | |
1258 | { | |
1259 | prefix = 1; | |
1260 | if (offset + 3 > sec->size) | |
1261 | return FALSE; | |
1262 | } | |
1263 | } | |
1264 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
1265 | return call[prefix] == 0xff && call[1 + prefix] == 0x10; | |
142411ca L |
1266 | } |
1267 | ||
1268 | return FALSE; | |
1269 | ||
1270 | default: | |
1271 | abort (); | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | /* Return TRUE if the TLS access transition is OK or no transition | |
1276 | will be performed. Update R_TYPE if there is a transition. */ | |
1277 | ||
1278 | static bfd_boolean | |
351f65ca L |
1279 | elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd, |
1280 | asection *sec, bfd_byte *contents, | |
1281 | Elf_Internal_Shdr *symtab_hdr, | |
1282 | struct elf_link_hash_entry **sym_hashes, | |
1283 | unsigned int *r_type, int tls_type, | |
1284 | const Elf_Internal_Rela *rel, | |
1285 | const Elf_Internal_Rela *relend, | |
1286 | struct elf_link_hash_entry *h, | |
bedfd056 L |
1287 | unsigned long r_symndx, |
1288 | bfd_boolean from_relocate_section) | |
142411ca L |
1289 | { |
1290 | unsigned int from_type = *r_type; | |
1291 | unsigned int to_type = from_type; | |
1292 | bfd_boolean check = TRUE; | |
1293 | ||
bb1cb422 L |
1294 | /* Skip TLS transition for functions. */ |
1295 | if (h != NULL | |
1296 | && (h->type == STT_FUNC | |
1297 | || h->type == STT_GNU_IFUNC)) | |
1298 | return TRUE; | |
1299 | ||
142411ca | 1300 | switch (from_type) |
bffbf940 JJ |
1301 | { |
1302 | case R_X86_64_TLSGD: | |
67a4f2b7 AO |
1303 | case R_X86_64_GOTPC32_TLSDESC: |
1304 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 1305 | case R_X86_64_GOTTPOFF: |
0e1862bb | 1306 | if (bfd_link_executable (info)) |
142411ca L |
1307 | { |
1308 | if (h == NULL) | |
1309 | to_type = R_X86_64_TPOFF32; | |
1310 | else | |
1311 | to_type = R_X86_64_GOTTPOFF; | |
1312 | } | |
1313 | ||
bedfd056 L |
1314 | /* When we are called from elf_x86_64_relocate_section, there may |
1315 | be additional transitions based on TLS_TYPE. */ | |
1316 | if (from_relocate_section) | |
142411ca L |
1317 | { |
1318 | unsigned int new_to_type = to_type; | |
1319 | ||
51537393 | 1320 | if (TLS_TRANSITION_IE_TO_LE_P (info, h, tls_type)) |
142411ca L |
1321 | new_to_type = R_X86_64_TPOFF32; |
1322 | ||
1323 | if (to_type == R_X86_64_TLSGD | |
1324 | || to_type == R_X86_64_GOTPC32_TLSDESC | |
1325 | || to_type == R_X86_64_TLSDESC_CALL) | |
1326 | { | |
1327 | if (tls_type == GOT_TLS_IE) | |
1328 | new_to_type = R_X86_64_GOTTPOFF; | |
1329 | } | |
1330 | ||
1331 | /* We checked the transition before when we were called from | |
351f65ca | 1332 | elf_x86_64_check_relocs. We only want to check the new |
142411ca L |
1333 | transition which hasn't been checked before. */ |
1334 | check = new_to_type != to_type && from_type == to_type; | |
1335 | to_type = new_to_type; | |
1336 | } | |
1337 | ||
1338 | break; | |
1339 | ||
bffbf940 | 1340 | case R_X86_64_TLSLD: |
0e1862bb | 1341 | if (bfd_link_executable (info)) |
142411ca L |
1342 | to_type = R_X86_64_TPOFF32; |
1343 | break; | |
1344 | ||
1345 | default: | |
1346 | return TRUE; | |
bffbf940 JJ |
1347 | } |
1348 | ||
142411ca L |
1349 | /* Return TRUE if there is no transition. */ |
1350 | if (from_type == to_type) | |
1351 | return TRUE; | |
1352 | ||
1353 | /* Check if the transition can be performed. */ | |
1354 | if (check | |
351f65ca L |
1355 | && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents, |
1356 | symtab_hdr, sym_hashes, | |
1357 | from_type, rel, relend)) | |
142411ca | 1358 | { |
2f629d23 | 1359 | reloc_howto_type *from, *to; |
4c544807 | 1360 | const char *name; |
142411ca | 1361 | |
351f65ca L |
1362 | from = elf_x86_64_rtype_to_howto (abfd, from_type); |
1363 | to = elf_x86_64_rtype_to_howto (abfd, to_type); | |
142411ca | 1364 | |
f3185997 NC |
1365 | if (from == NULL || to == NULL) |
1366 | return FALSE; | |
1367 | ||
4c544807 L |
1368 | if (h) |
1369 | name = h->root.root.string; | |
1370 | else | |
1371 | { | |
0afcef53 | 1372 | struct elf_x86_link_hash_table *htab; |
4dfe6ac6 | 1373 | |
0afcef53 | 1374 | htab = elf_x86_hash_table (info, X86_64_ELF_DATA); |
4dfe6ac6 NC |
1375 | if (htab == NULL) |
1376 | name = "*unknown*"; | |
1377 | else | |
1378 | { | |
1379 | Elf_Internal_Sym *isym; | |
1380 | ||
1381 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1382 | abfd, r_symndx); | |
1383 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1384 | } | |
4c544807 L |
1385 | } |
1386 | ||
4eca0228 | 1387 | _bfd_error_handler |
695344c0 | 1388 | /* xgettext:c-format */ |
2dcf00ce AM |
1389 | (_("%pB: TLS transition from %s to %s against `%s' at %#" PRIx64 |
1390 | " in section `%pA' failed"), | |
1391 | abfd, from->name, to->name, name, (uint64_t) rel->r_offset, sec); | |
142411ca L |
1392 | bfd_set_error (bfd_error_bad_value); |
1393 | return FALSE; | |
1394 | } | |
1395 | ||
1396 | *r_type = to_type; | |
1397 | return TRUE; | |
bffbf940 JJ |
1398 | } |
1399 | ||
c1d11331 L |
1400 | /* Rename some of the generic section flags to better document how they |
1401 | are used here. */ | |
6999821f | 1402 | #define check_relocs_failed sec_flg0 |
338c190a L |
1403 | |
1404 | static bfd_boolean | |
aab921ad L |
1405 | elf_x86_64_need_pic (struct bfd_link_info *info, |
1406 | bfd *input_bfd, asection *sec, | |
338c190a L |
1407 | struct elf_link_hash_entry *h, |
1408 | Elf_Internal_Shdr *symtab_hdr, | |
1409 | Elf_Internal_Sym *isym, | |
1410 | reloc_howto_type *howto) | |
1411 | { | |
1412 | const char *v = ""; | |
1413 | const char *und = ""; | |
1414 | const char *pic = ""; | |
aab921ad | 1415 | const char *object; |
338c190a L |
1416 | |
1417 | const char *name; | |
1418 | if (h) | |
1419 | { | |
1420 | name = h->root.root.string; | |
1421 | switch (ELF_ST_VISIBILITY (h->other)) | |
1422 | { | |
1423 | case STV_HIDDEN: | |
1424 | v = _("hidden symbol "); | |
1425 | break; | |
1426 | case STV_INTERNAL: | |
1427 | v = _("internal symbol "); | |
1428 | break; | |
1429 | case STV_PROTECTED: | |
1430 | v = _("protected symbol "); | |
1431 | break; | |
1432 | default: | |
0afcef53 | 1433 | if (((struct elf_x86_link_hash_entry *) h)->def_protected) |
a5b4ee94 L |
1434 | v = _("protected symbol "); |
1435 | else | |
1436 | v = _("symbol "); | |
9a7f0679 | 1437 | pic = NULL; |
338c190a L |
1438 | break; |
1439 | } | |
1440 | ||
83924b38 | 1441 | if (!SYMBOL_DEFINED_NON_SHARED_P (h) && !h->def_dynamic) |
338c190a L |
1442 | und = _("undefined "); |
1443 | } | |
1444 | else | |
1445 | { | |
1446 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, isym, NULL); | |
9a7f0679 | 1447 | pic = NULL; |
338c190a L |
1448 | } |
1449 | ||
aab921ad | 1450 | if (bfd_link_dll (info)) |
9a7f0679 L |
1451 | { |
1452 | object = _("a shared object"); | |
1453 | if (!pic) | |
1454 | pic = _("; recompile with -fPIC"); | |
1455 | } | |
aab921ad | 1456 | else |
9a7f0679 L |
1457 | { |
1458 | if (bfd_link_pie (info)) | |
1459 | object = _("a PIE object"); | |
1460 | else | |
1461 | object = _("a PDE object"); | |
1462 | if (!pic) | |
1463 | pic = _("; recompile with -fPIE"); | |
1464 | } | |
aab921ad | 1465 | |
695344c0 | 1466 | /* xgettext:c-format */ |
871b3ab2 | 1467 | _bfd_error_handler (_("%pB: relocation %s against %s%s`%s' can " |
aab921ad L |
1468 | "not be used when making %s%s"), |
1469 | input_bfd, howto->name, und, v, name, | |
1470 | object, pic); | |
338c190a L |
1471 | bfd_set_error (bfd_error_bad_value); |
1472 | sec->check_relocs_failed = 1; | |
1473 | return FALSE; | |
1474 | } | |
c1d11331 | 1475 | |
c175a657 L |
1476 | /* With the local symbol, foo, we convert |
1477 | mov foo@GOTPCREL(%rip), %reg | |
1478 | to | |
1479 | lea foo(%rip), %reg | |
1480 | and convert | |
1481 | call/jmp *foo@GOTPCREL(%rip) | |
1482 | to | |
1483 | nop call foo/jmp foo nop | |
1484 | When PIC is false, convert | |
1485 | test %reg, foo@GOTPCREL(%rip) | |
1486 | to | |
1487 | test $foo, %reg | |
1488 | and convert | |
1489 | binop foo@GOTPCREL(%rip), %reg | |
1490 | to | |
1491 | binop $foo, %reg | |
1492 | where binop is one of adc, add, and, cmp, or, sbb, sub, xor | |
1493 | instructions. */ | |
1494 | ||
1495 | static bfd_boolean | |
8b43e456 | 1496 | elf_x86_64_convert_load_reloc (bfd *abfd, |
c175a657 | 1497 | bfd_byte *contents, |
6999821f | 1498 | unsigned int *r_type_p, |
c175a657 L |
1499 | Elf_Internal_Rela *irel, |
1500 | struct elf_link_hash_entry *h, | |
1501 | bfd_boolean *converted, | |
1502 | struct bfd_link_info *link_info) | |
1503 | { | |
0afcef53 | 1504 | struct elf_x86_link_hash_table *htab; |
c175a657 | 1505 | bfd_boolean is_pic; |
8b43e456 | 1506 | bfd_boolean no_overflow; |
c175a657 L |
1507 | bfd_boolean relocx; |
1508 | bfd_boolean to_reloc_pc32; | |
382aae06 L |
1509 | bfd_boolean abs_symbol; |
1510 | bfd_boolean local_ref; | |
c175a657 | 1511 | asection *tsec; |
c175a657 L |
1512 | bfd_signed_vma raddend; |
1513 | unsigned int opcode; | |
1514 | unsigned int modrm; | |
6999821f | 1515 | unsigned int r_type = *r_type_p; |
c175a657 | 1516 | unsigned int r_symndx; |
c175a657 | 1517 | bfd_vma roff = irel->r_offset; |
382aae06 | 1518 | bfd_vma abs_relocation; |
c175a657 L |
1519 | |
1520 | if (roff < (r_type == R_X86_64_REX_GOTPCRELX ? 3 : 2)) | |
1521 | return TRUE; | |
1522 | ||
1523 | raddend = irel->r_addend; | |
1524 | /* Addend for 32-bit PC-relative relocation must be -4. */ | |
1525 | if (raddend != -4) | |
1526 | return TRUE; | |
1527 | ||
0afcef53 | 1528 | htab = elf_x86_hash_table (link_info, X86_64_ELF_DATA); |
c175a657 L |
1529 | is_pic = bfd_link_pic (link_info); |
1530 | ||
1531 | relocx = (r_type == R_X86_64_GOTPCRELX | |
1532 | || r_type == R_X86_64_REX_GOTPCRELX); | |
1533 | ||
8b43e456 L |
1534 | /* TRUE if --no-relax is used. */ |
1535 | no_overflow = link_info->disable_target_specific_optimizations > 1; | |
c175a657 L |
1536 | |
1537 | r_symndx = htab->r_sym (irel->r_info); | |
1538 | ||
1539 | opcode = bfd_get_8 (abfd, contents + roff - 2); | |
1540 | ||
1541 | /* Convert mov to lea since it has been done for a while. */ | |
1542 | if (opcode != 0x8b) | |
1543 | { | |
1544 | /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX | |
1545 | for call, jmp or one of adc, add, and, cmp, or, sbb, sub, | |
1546 | test, xor instructions. */ | |
1547 | if (!relocx) | |
1548 | return TRUE; | |
1549 | } | |
1550 | ||
1551 | /* We convert only to R_X86_64_PC32: | |
1552 | 1. Branch. | |
1553 | 2. R_X86_64_GOTPCREL since we can't modify REX byte. | |
8b43e456 | 1554 | 3. no_overflow is true. |
c175a657 L |
1555 | 4. PIC. |
1556 | */ | |
1557 | to_reloc_pc32 = (opcode == 0xff | |
1558 | || !relocx | |
8b43e456 | 1559 | || no_overflow |
c175a657 L |
1560 | || is_pic); |
1561 | ||
382aae06 L |
1562 | abs_symbol = FALSE; |
1563 | abs_relocation = 0; | |
1564 | ||
c175a657 L |
1565 | /* Get the symbol referred to by the reloc. */ |
1566 | if (h == NULL) | |
1567 | { | |
1568 | Elf_Internal_Sym *isym | |
1569 | = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx); | |
1570 | ||
1571 | /* Skip relocation against undefined symbols. */ | |
1572 | if (isym->st_shndx == SHN_UNDEF) | |
1573 | return TRUE; | |
1574 | ||
382aae06 | 1575 | local_ref = TRUE; |
c175a657 | 1576 | if (isym->st_shndx == SHN_ABS) |
382aae06 L |
1577 | { |
1578 | tsec = bfd_abs_section_ptr; | |
1579 | abs_symbol = TRUE; | |
1580 | abs_relocation = isym->st_value; | |
1581 | } | |
c175a657 L |
1582 | else if (isym->st_shndx == SHN_COMMON) |
1583 | tsec = bfd_com_section_ptr; | |
1584 | else if (isym->st_shndx == SHN_X86_64_LCOMMON) | |
1585 | tsec = &_bfd_elf_large_com_section; | |
1586 | else | |
1587 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
c175a657 L |
1588 | } |
1589 | else | |
1590 | { | |
1591 | /* Undefined weak symbol is only bound locally in executable | |
1592 | and its reference is resolved as 0 without relocation | |
1593 | overflow. We can only perform this optimization for | |
1594 | GOTPCRELX relocations since we need to modify REX byte. | |
1595 | It is OK convert mov with R_X86_64_GOTPCREL to | |
1596 | R_X86_64_PC32. */ | |
0a27fed7 L |
1597 | struct elf_x86_link_hash_entry *eh = elf_x86_hash_entry (h); |
1598 | ||
382aae06 L |
1599 | abs_symbol = ABS_SYMBOL_P (h); |
1600 | abs_relocation = h->root.u.def.value; | |
1601 | ||
0a27fed7 L |
1602 | /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P. */ |
1603 | local_ref = SYMBOL_REFERENCES_LOCAL_P (link_info, h); | |
c175a657 | 1604 | if ((relocx || opcode == 0x8b) |
0a27fed7 L |
1605 | && (h->root.type == bfd_link_hash_undefweak |
1606 | && !eh->linker_def | |
1607 | && local_ref)) | |
c175a657 L |
1608 | { |
1609 | if (opcode == 0xff) | |
1610 | { | |
1611 | /* Skip for branch instructions since R_X86_64_PC32 | |
1612 | may overflow. */ | |
8b43e456 | 1613 | if (no_overflow) |
c175a657 L |
1614 | return TRUE; |
1615 | } | |
1616 | else if (relocx) | |
1617 | { | |
1618 | /* For non-branch instructions, we can convert to | |
1619 | R_X86_64_32/R_X86_64_32S since we know if there | |
1620 | is a REX byte. */ | |
1621 | to_reloc_pc32 = FALSE; | |
1622 | } | |
1623 | ||
1624 | /* Since we don't know the current PC when PIC is true, | |
1625 | we can't convert to R_X86_64_PC32. */ | |
1626 | if (to_reloc_pc32 && is_pic) | |
1627 | return TRUE; | |
1628 | ||
1629 | goto convert; | |
1630 | } | |
1631 | /* Avoid optimizing GOTPCREL relocations againt _DYNAMIC since | |
1632 | ld.so may use its link-time address. */ | |
cbd0eecf | 1633 | else if (h->start_stop |
0a27fed7 | 1634 | || eh->linker_def |
cbd0eecf L |
1635 | || ((h->def_regular |
1636 | || h->root.type == bfd_link_hash_defined | |
1637 | || h->root.type == bfd_link_hash_defweak) | |
1638 | && h != htab->elf.hdynamic | |
0a27fed7 | 1639 | && local_ref)) |
c175a657 L |
1640 | { |
1641 | /* bfd_link_hash_new or bfd_link_hash_undefined is | |
1642 | set by an assignment in a linker script in | |
cbd0eecf L |
1643 | bfd_elf_record_link_assignment. start_stop is set |
1644 | on __start_SECNAME/__stop_SECNAME which mark section | |
1645 | SECNAME. */ | |
1646 | if (h->start_stop | |
0a27fed7 | 1647 | || eh->linker_def |
cbd0eecf L |
1648 | || (h->def_regular |
1649 | && (h->root.type == bfd_link_hash_new | |
1650 | || h->root.type == bfd_link_hash_undefined | |
1651 | || ((h->root.type == bfd_link_hash_defined | |
1652 | || h->root.type == bfd_link_hash_defweak) | |
1653 | && h->root.u.def.section == bfd_und_section_ptr)))) | |
c175a657 L |
1654 | { |
1655 | /* Skip since R_X86_64_32/R_X86_64_32S may overflow. */ | |
8b43e456 | 1656 | if (no_overflow) |
c175a657 L |
1657 | return TRUE; |
1658 | goto convert; | |
1659 | } | |
1660 | tsec = h->root.u.def.section; | |
c175a657 L |
1661 | } |
1662 | else | |
1663 | return TRUE; | |
1664 | } | |
1665 | ||
2168b268 L |
1666 | /* Don't convert GOTPCREL relocation against large section. */ |
1667 | if (elf_section_data (tsec) != NULL | |
1668 | && (elf_section_flags (tsec) & SHF_X86_64_LARGE) != 0) | |
1669 | return TRUE; | |
1670 | ||
8b43e456 L |
1671 | /* Skip since R_X86_64_PC32/R_X86_64_32/R_X86_64_32S may overflow. */ |
1672 | if (no_overflow) | |
1673 | return TRUE; | |
c175a657 | 1674 | |
dc1e8a47 | 1675 | convert: |
c175a657 L |
1676 | if (opcode == 0xff) |
1677 | { | |
1678 | /* We have "call/jmp *foo@GOTPCREL(%rip)". */ | |
1679 | unsigned int nop; | |
1680 | unsigned int disp; | |
1681 | bfd_vma nop_offset; | |
1682 | ||
1683 | /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to | |
1684 | R_X86_64_PC32. */ | |
1685 | modrm = bfd_get_8 (abfd, contents + roff - 1); | |
1686 | if (modrm == 0x25) | |
1687 | { | |
1688 | /* Convert to "jmp foo nop". */ | |
1689 | modrm = 0xe9; | |
1690 | nop = NOP_OPCODE; | |
1691 | nop_offset = irel->r_offset + 3; | |
1692 | disp = bfd_get_32 (abfd, contents + irel->r_offset); | |
1693 | irel->r_offset -= 1; | |
1694 | bfd_put_32 (abfd, disp, contents + irel->r_offset); | |
1695 | } | |
1696 | else | |
1697 | { | |
0afcef53 L |
1698 | struct elf_x86_link_hash_entry *eh |
1699 | = (struct elf_x86_link_hash_entry *) h; | |
e2cbcd91 | 1700 | |
c175a657 L |
1701 | /* Convert to "nop call foo". ADDR_PREFIX_OPCODE |
1702 | is a nop prefix. */ | |
1703 | modrm = 0xe8; | |
e2cbcd91 L |
1704 | /* To support TLS optimization, always use addr32 prefix for |
1705 | "call *__tls_get_addr@GOTPCREL(%rip)". */ | |
1d4af308 | 1706 | if (eh && eh->tls_get_addr) |
c175a657 | 1707 | { |
e2cbcd91 L |
1708 | nop = 0x67; |
1709 | nop_offset = irel->r_offset - 2; | |
c175a657 L |
1710 | } |
1711 | else | |
e2cbcd91 | 1712 | { |
5b9c07b2 L |
1713 | nop = htab->params->call_nop_byte; |
1714 | if (htab->params->call_nop_as_suffix) | |
e2cbcd91 L |
1715 | { |
1716 | nop_offset = irel->r_offset + 3; | |
1717 | disp = bfd_get_32 (abfd, contents + irel->r_offset); | |
1718 | irel->r_offset -= 1; | |
1719 | bfd_put_32 (abfd, disp, contents + irel->r_offset); | |
1720 | } | |
1721 | else | |
1722 | nop_offset = irel->r_offset - 2; | |
1723 | } | |
c175a657 L |
1724 | } |
1725 | bfd_put_8 (abfd, nop, contents + nop_offset); | |
1726 | bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1); | |
1727 | r_type = R_X86_64_PC32; | |
1728 | } | |
1729 | else | |
1730 | { | |
1731 | unsigned int rex; | |
1732 | unsigned int rex_mask = REX_R; | |
1733 | ||
1734 | if (r_type == R_X86_64_REX_GOTPCRELX) | |
1735 | rex = bfd_get_8 (abfd, contents + roff - 3); | |
1736 | else | |
1737 | rex = 0; | |
1738 | ||
1739 | if (opcode == 0x8b) | |
1740 | { | |
382aae06 L |
1741 | if (abs_symbol && local_ref) |
1742 | to_reloc_pc32 = FALSE; | |
1743 | ||
c175a657 L |
1744 | if (to_reloc_pc32) |
1745 | { | |
1746 | /* Convert "mov foo@GOTPCREL(%rip), %reg" to | |
1747 | "lea foo(%rip), %reg". */ | |
1748 | opcode = 0x8d; | |
1749 | r_type = R_X86_64_PC32; | |
1750 | } | |
1751 | else | |
1752 | { | |
1753 | /* Convert "mov foo@GOTPCREL(%rip), %reg" to | |
1754 | "mov $foo, %reg". */ | |
1755 | opcode = 0xc7; | |
1756 | modrm = bfd_get_8 (abfd, contents + roff - 1); | |
1757 | modrm = 0xc0 | (modrm & 0x38) >> 3; | |
1758 | if ((rex & REX_W) != 0 | |
1759 | && ABI_64_P (link_info->output_bfd)) | |
1760 | { | |
1761 | /* Keep the REX_W bit in REX byte for LP64. */ | |
1762 | r_type = R_X86_64_32S; | |
1763 | goto rewrite_modrm_rex; | |
1764 | } | |
1765 | else | |
1766 | { | |
1767 | /* If the REX_W bit in REX byte isn't needed, | |
1768 | use R_X86_64_32 and clear the W bit to avoid | |
1769 | sign-extend imm32 to imm64. */ | |
1770 | r_type = R_X86_64_32; | |
1771 | /* Clear the W bit in REX byte. */ | |
1772 | rex_mask |= REX_W; | |
1773 | goto rewrite_modrm_rex; | |
1774 | } | |
1775 | } | |
1776 | } | |
1777 | else | |
1778 | { | |
1779 | /* R_X86_64_PC32 isn't supported. */ | |
1780 | if (to_reloc_pc32) | |
1781 | return TRUE; | |
1782 | ||
1783 | modrm = bfd_get_8 (abfd, contents + roff - 1); | |
1784 | if (opcode == 0x85) | |
1785 | { | |
1786 | /* Convert "test %reg, foo@GOTPCREL(%rip)" to | |
1787 | "test $foo, %reg". */ | |
1788 | modrm = 0xc0 | (modrm & 0x38) >> 3; | |
1789 | opcode = 0xf7; | |
1790 | } | |
1791 | else | |
1792 | { | |
1793 | /* Convert "binop foo@GOTPCREL(%rip), %reg" to | |
1794 | "binop $foo, %reg". */ | |
1795 | modrm = 0xc0 | (modrm & 0x38) >> 3 | (opcode & 0x3c); | |
1796 | opcode = 0x81; | |
1797 | } | |
1798 | ||
1799 | /* Use R_X86_64_32 with 32-bit operand to avoid relocation | |
1800 | overflow when sign-extending imm32 to imm64. */ | |
1801 | r_type = (rex & REX_W) != 0 ? R_X86_64_32S : R_X86_64_32; | |
1802 | ||
dc1e8a47 | 1803 | rewrite_modrm_rex: |
382aae06 L |
1804 | if (abs_relocation) |
1805 | { | |
1806 | /* Check if R_X86_64_32S/R_X86_64_32 fits. */ | |
1807 | if (r_type == R_X86_64_32S) | |
1808 | { | |
1809 | if ((abs_relocation + 0x80000000) > 0xffffffff) | |
1810 | return TRUE; | |
1811 | } | |
1812 | else | |
1813 | { | |
1814 | if (abs_relocation > 0xffffffff) | |
1815 | return TRUE; | |
1816 | } | |
1817 | } | |
1818 | ||
c175a657 L |
1819 | bfd_put_8 (abfd, modrm, contents + roff - 1); |
1820 | ||
1821 | if (rex) | |
1822 | { | |
1823 | /* Move the R bit to the B bit in REX byte. */ | |
1824 | rex = (rex & ~rex_mask) | (rex & REX_R) >> 2; | |
1825 | bfd_put_8 (abfd, rex, contents + roff - 3); | |
1826 | } | |
1827 | ||
1828 | /* No addend for R_X86_64_32/R_X86_64_32S relocations. */ | |
1829 | irel->r_addend = 0; | |
1830 | } | |
1831 | ||
1832 | bfd_put_8 (abfd, opcode, contents + roff - 2); | |
1833 | } | |
1834 | ||
6999821f | 1835 | *r_type_p = r_type; |
78984959 L |
1836 | irel->r_info = htab->r_info (r_symndx, |
1837 | r_type | R_X86_64_converted_reloc_bit); | |
c175a657 L |
1838 | |
1839 | *converted = TRUE; | |
1840 | ||
1841 | return TRUE; | |
1842 | } | |
1843 | ||
70256ad8 | 1844 | /* Look through the relocs for a section during the first phase, and |
c434dee6 AJ |
1845 | calculate needed space in the global offset table, procedure |
1846 | linkage table, and dynamic reloc sections. */ | |
70256ad8 | 1847 | |
b34976b6 | 1848 | static bfd_boolean |
351f65ca L |
1849 | elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1850 | asection *sec, | |
1851 | const Elf_Internal_Rela *relocs) | |
70256ad8 | 1852 | { |
0afcef53 | 1853 | struct elf_x86_link_hash_table *htab; |
70256ad8 AJ |
1854 | Elf_Internal_Shdr *symtab_hdr; |
1855 | struct elf_link_hash_entry **sym_hashes; | |
70256ad8 AJ |
1856 | const Elf_Internal_Rela *rel; |
1857 | const Elf_Internal_Rela *rel_end; | |
70256ad8 | 1858 | asection *sreloc; |
bedfd056 | 1859 | bfd_byte *contents; |
5e5e02ae | 1860 | bfd_boolean converted; |
70256ad8 | 1861 | |
0e1862bb | 1862 | if (bfd_link_relocatable (info)) |
b34976b6 | 1863 | return TRUE; |
70256ad8 | 1864 | |
081b1afe L |
1865 | /* Don't do anything special with non-loaded, non-alloced sections. |
1866 | In particular, any relocs in such sections should not affect GOT | |
1867 | and PLT reference counting (ie. we don't allow them to create GOT | |
1868 | or PLT entries), there's no possibility or desire to optimize TLS | |
1869 | relocs, and there's not much point in propagating relocs to shared | |
1870 | libs that the dynamic linker won't relocate. */ | |
1871 | if ((sec->flags & SEC_ALLOC) == 0) | |
1872 | return TRUE; | |
1873 | ||
0afcef53 | 1874 | htab = elf_x86_hash_table (info, X86_64_ELF_DATA); |
4dfe6ac6 | 1875 | if (htab == NULL) |
afd9acee L |
1876 | { |
1877 | sec->check_relocs_failed = 1; | |
1878 | return FALSE; | |
1879 | } | |
4dfe6ac6 | 1880 | |
fe53b4a4 L |
1881 | BFD_ASSERT (is_x86_elf (abfd, htab)); |
1882 | ||
bedfd056 L |
1883 | /* Get the section contents. */ |
1884 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1885 | contents = elf_section_data (sec)->this_hdr.contents; | |
1886 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1887 | { | |
1888 | sec->check_relocs_failed = 1; | |
1889 | return FALSE; | |
1890 | } | |
1891 | ||
0ffa91dd | 1892 | symtab_hdr = &elf_symtab_hdr (abfd); |
70256ad8 | 1893 | sym_hashes = elf_sym_hashes (abfd); |
70256ad8 | 1894 | |
5e5e02ae L |
1895 | converted = FALSE; |
1896 | ||
c434dee6 | 1897 | sreloc = NULL; |
cbe950e9 | 1898 | |
70256ad8 AJ |
1899 | rel_end = relocs + sec->reloc_count; |
1900 | for (rel = relocs; rel < rel_end; rel++) | |
1901 | { | |
bffbf940 | 1902 | unsigned int r_type; |
d42c267e | 1903 | unsigned int r_symndx; |
70256ad8 | 1904 | struct elf_link_hash_entry *h; |
0afcef53 | 1905 | struct elf_x86_link_hash_entry *eh; |
4c544807 L |
1906 | Elf_Internal_Sym *isym; |
1907 | const char *name; | |
06a6a421 | 1908 | bfd_boolean size_reloc; |
6999821f | 1909 | bfd_boolean converted_reloc; |
382aae06 | 1910 | bfd_boolean no_dynreloc; |
70256ad8 | 1911 | |
351f65ca L |
1912 | r_symndx = htab->r_sym (rel->r_info); |
1913 | r_type = ELF32_R_TYPE (rel->r_info); | |
c434dee6 AJ |
1914 | |
1915 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
1916 | { | |
695344c0 | 1917 | /* xgettext:c-format */ |
871b3ab2 | 1918 | _bfd_error_handler (_("%pB: bad symbol index: %d"), |
4eca0228 | 1919 | abfd, r_symndx); |
afd9acee | 1920 | goto error_return; |
c434dee6 AJ |
1921 | } |
1922 | ||
70256ad8 | 1923 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1924 | { |
1925 | /* A local symbol. */ | |
c2e61a4e L |
1926 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1927 | abfd, r_symndx); | |
1928 | if (isym == NULL) | |
afd9acee | 1929 | goto error_return; |
c25bc9fc L |
1930 | |
1931 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
351f65ca | 1932 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c25bc9fc | 1933 | { |
0afcef53 L |
1934 | h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel, |
1935 | TRUE); | |
c25bc9fc | 1936 | if (h == NULL) |
afd9acee | 1937 | goto error_return; |
6bbec505 | 1938 | |
c25bc9fc | 1939 | /* Fake a STT_GNU_IFUNC symbol. */ |
6322e5c5 L |
1940 | h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr, |
1941 | isym, NULL); | |
c25bc9fc L |
1942 | h->type = STT_GNU_IFUNC; |
1943 | h->def_regular = 1; | |
1944 | h->ref_regular = 1; | |
1945 | h->forced_local = 1; | |
1946 | h->root.type = bfd_link_hash_defined; | |
1947 | } | |
1948 | else | |
1949 | h = NULL; | |
1950 | } | |
70256ad8 | 1951 | else |
71cb9464 | 1952 | { |
4c544807 | 1953 | isym = NULL; |
71cb9464 L |
1954 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1955 | while (h->root.type == bfd_link_hash_indirect | |
1956 | || h->root.type == bfd_link_hash_warning) | |
1957 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c25bc9fc | 1958 | } |
cbe950e9 | 1959 | |
d1534d16 L |
1960 | /* Check invalid x32 relocations. */ |
1961 | if (!ABI_64_P (abfd)) | |
1962 | switch (r_type) | |
1963 | { | |
1964 | default: | |
1965 | break; | |
1966 | ||
d1534d16 L |
1967 | case R_X86_64_DTPOFF64: |
1968 | case R_X86_64_TPOFF64: | |
1969 | case R_X86_64_PC64: | |
1970 | case R_X86_64_GOTOFF64: | |
1971 | case R_X86_64_GOT64: | |
1972 | case R_X86_64_GOTPCREL64: | |
1973 | case R_X86_64_GOTPC64: | |
1974 | case R_X86_64_GOTPLT64: | |
1975 | case R_X86_64_PLTOFF64: | |
1976 | { | |
1977 | if (h) | |
1978 | name = h->root.root.string; | |
1979 | else | |
1980 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1981 | NULL); | |
4eca0228 | 1982 | _bfd_error_handler |
695344c0 | 1983 | /* xgettext:c-format */ |
871b3ab2 | 1984 | (_("%pB: relocation %s against symbol `%s' isn't " |
d1534d16 L |
1985 | "supported in x32 mode"), abfd, |
1986 | x86_64_elf_howto_table[r_type].name, name); | |
1987 | bfd_set_error (bfd_error_bad_value); | |
afd9acee | 1988 | goto error_return; |
d1534d16 L |
1989 | } |
1990 | break; | |
1991 | } | |
1992 | ||
c25bc9fc L |
1993 | if (h != NULL) |
1994 | { | |
ad1e85de L |
1995 | /* It is referenced by a non-shared object. */ |
1996 | h->ref_regular = 1; | |
71cb9464 | 1997 | } |
70256ad8 | 1998 | |
6999821f L |
1999 | converted_reloc = FALSE; |
2000 | if ((r_type == R_X86_64_GOTPCREL | |
2001 | || r_type == R_X86_64_GOTPCRELX | |
2002 | || r_type == R_X86_64_REX_GOTPCRELX) | |
2003 | && (h == NULL || h->type != STT_GNU_IFUNC)) | |
2004 | { | |
2005 | Elf_Internal_Rela *irel = (Elf_Internal_Rela *) rel; | |
2006 | if (!elf_x86_64_convert_load_reloc (abfd, contents, &r_type, | |
2007 | irel, h, &converted_reloc, | |
2008 | info)) | |
2009 | goto error_return; | |
5e5e02ae L |
2010 | |
2011 | if (converted_reloc) | |
2012 | converted = TRUE; | |
6999821f L |
2013 | } |
2014 | ||
382aae06 L |
2015 | if (!_bfd_elf_x86_valid_reloc_p (sec, info, htab, rel, h, isym, |
2016 | symtab_hdr, &no_dynreloc)) | |
2017 | return FALSE; | |
2018 | ||
bedfd056 | 2019 | if (! elf_x86_64_tls_transition (info, abfd, sec, contents, |
351f65ca L |
2020 | symtab_hdr, sym_hashes, |
2021 | &r_type, GOT_UNKNOWN, | |
bedfd056 | 2022 | rel, rel_end, h, r_symndx, FALSE)) |
afd9acee | 2023 | goto error_return; |
142411ca | 2024 | |
cd048363 L |
2025 | /* Check if _GLOBAL_OFFSET_TABLE_ is referenced. */ |
2026 | if (h == htab->elf.hgot) | |
2027 | htab->got_referenced = TRUE; | |
2028 | ||
0afcef53 | 2029 | eh = (struct elf_x86_link_hash_entry *) h; |
bffbf940 | 2030 | switch (r_type) |
70256ad8 | 2031 | { |
bffbf940 | 2032 | case R_X86_64_TLSLD: |
0f09b4d8 | 2033 | htab->tls_ld_or_ldm_got.refcount = 1; |
bffbf940 JJ |
2034 | goto create_got; |
2035 | ||
2036 | case R_X86_64_TPOFF32: | |
0e1862bb | 2037 | if (!bfd_link_executable (info) && ABI_64_P (abfd)) |
aab921ad | 2038 | return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym, |
338c190a | 2039 | &x86_64_elf_howto_table[r_type]); |
aec6b87e | 2040 | if (eh != NULL) |
98b273dc | 2041 | eh->zero_undefweak &= 0x2; |
bffbf940 | 2042 | break; |
c434dee6 | 2043 | |
bffbf940 | 2044 | case R_X86_64_GOTTPOFF: |
0e1862bb | 2045 | if (!bfd_link_executable (info)) |
bffbf940 JJ |
2046 | info->flags |= DF_STATIC_TLS; |
2047 | /* Fall through */ | |
70256ad8 | 2048 | |
bffbf940 JJ |
2049 | case R_X86_64_GOT32: |
2050 | case R_X86_64_GOTPCREL: | |
56ceb5b5 L |
2051 | case R_X86_64_GOTPCRELX: |
2052 | case R_X86_64_REX_GOTPCRELX: | |
bffbf940 | 2053 | case R_X86_64_TLSGD: |
7b81dfbb AJ |
2054 | case R_X86_64_GOT64: |
2055 | case R_X86_64_GOTPCREL64: | |
2056 | case R_X86_64_GOTPLT64: | |
67a4f2b7 AO |
2057 | case R_X86_64_GOTPC32_TLSDESC: |
2058 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 JJ |
2059 | /* This symbol requires a global offset table entry. */ |
2060 | { | |
2061 | int tls_type, old_tls_type; | |
2062 | ||
2063 | switch (r_type) | |
2064 | { | |
382aae06 L |
2065 | default: |
2066 | tls_type = GOT_NORMAL; | |
2067 | if (h) | |
2068 | { | |
2069 | if (ABS_SYMBOL_P (h)) | |
2070 | tls_type = GOT_ABS; | |
2071 | } | |
2072 | else if (isym->st_shndx == SHN_ABS) | |
2073 | tls_type = GOT_ABS; | |
2074 | break; | |
2075 | case R_X86_64_TLSGD: | |
2076 | tls_type = GOT_TLS_GD; | |
2077 | break; | |
2078 | case R_X86_64_GOTTPOFF: | |
2079 | tls_type = GOT_TLS_IE; | |
2080 | break; | |
67a4f2b7 AO |
2081 | case R_X86_64_GOTPC32_TLSDESC: |
2082 | case R_X86_64_TLSDESC_CALL: | |
382aae06 L |
2083 | tls_type = GOT_TLS_GDESC; |
2084 | break; | |
bffbf940 JJ |
2085 | } |
2086 | ||
2087 | if (h != NULL) | |
2088 | { | |
0f09b4d8 | 2089 | h->got.refcount = 1; |
aec6b87e | 2090 | old_tls_type = eh->tls_type; |
bffbf940 JJ |
2091 | } |
2092 | else | |
2093 | { | |
2094 | bfd_signed_vma *local_got_refcounts; | |
2095 | ||
2096 | /* This is a global offset table entry for a local symbol. */ | |
2097 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
2098 | if (local_got_refcounts == NULL) | |
2099 | { | |
2100 | bfd_size_type size; | |
2101 | ||
2102 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
2103 | size *= sizeof (bfd_signed_vma) |
2104 | + sizeof (bfd_vma) + sizeof (char); | |
bffbf940 JJ |
2105 | local_got_refcounts = ((bfd_signed_vma *) |
2106 | bfd_zalloc (abfd, size)); | |
2107 | if (local_got_refcounts == NULL) | |
afd9acee | 2108 | goto error_return; |
bffbf940 | 2109 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
0afcef53 | 2110 | elf_x86_local_tlsdesc_gotent (abfd) |
67a4f2b7 | 2111 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); |
0afcef53 | 2112 | elf_x86_local_got_tls_type (abfd) |
67a4f2b7 | 2113 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
bffbf940 | 2114 | } |
0f09b4d8 | 2115 | local_got_refcounts[r_symndx] = 1; |
bffbf940 | 2116 | old_tls_type |
0afcef53 | 2117 | = elf_x86_local_got_tls_type (abfd) [r_symndx]; |
bffbf940 JJ |
2118 | } |
2119 | ||
2120 | /* If a TLS symbol is accessed using IE at least once, | |
2121 | there is no point to use dynamic model for it. */ | |
2122 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN | |
67a4f2b7 AO |
2123 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
2124 | || tls_type != GOT_TLS_IE)) | |
bffbf940 | 2125 | { |
67a4f2b7 | 2126 | if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type)) |
bffbf940 | 2127 | tls_type = old_tls_type; |
67a4f2b7 AO |
2128 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
2129 | && GOT_TLS_GD_ANY_P (tls_type)) | |
2130 | tls_type |= old_tls_type; | |
bffbf940 JJ |
2131 | else |
2132 | { | |
09a24cbf | 2133 | if (h) |
4c544807 L |
2134 | name = h->root.root.string; |
2135 | else | |
2136 | name = bfd_elf_sym_name (abfd, symtab_hdr, | |
2137 | isym, NULL); | |
4eca0228 | 2138 | _bfd_error_handler |
695344c0 | 2139 | /* xgettext:c-format */ |
871b3ab2 | 2140 | (_("%pB: '%s' accessed both as normal and" |
63a5468a | 2141 | " thread local symbol"), |
4c544807 | 2142 | abfd, name); |
68c4a57e | 2143 | bfd_set_error (bfd_error_bad_value); |
afd9acee | 2144 | goto error_return; |
bffbf940 JJ |
2145 | } |
2146 | } | |
2147 | ||
2148 | if (old_tls_type != tls_type) | |
2149 | { | |
aec6b87e L |
2150 | if (eh != NULL) |
2151 | eh->tls_type = tls_type; | |
bffbf940 | 2152 | else |
0afcef53 | 2153 | elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type; |
bffbf940 JJ |
2154 | } |
2155 | } | |
c434dee6 AJ |
2156 | /* Fall through */ |
2157 | ||
d6ab8113 JB |
2158 | case R_X86_64_GOTOFF64: |
2159 | case R_X86_64_GOTPC32: | |
7b81dfbb | 2160 | case R_X86_64_GOTPC64: |
bffbf940 | 2161 | create_got: |
aec6b87e | 2162 | if (eh != NULL) |
98b273dc | 2163 | eh->zero_undefweak &= 0x2; |
70256ad8 AJ |
2164 | break; |
2165 | ||
2166 | case R_X86_64_PLT32: | |
c3320543 | 2167 | case R_X86_64_PLT32_BND: |
70256ad8 | 2168 | /* This symbol requires a procedure linkage table entry. We |
407443a3 AJ |
2169 | actually build the entry in adjust_dynamic_symbol, |
2170 | because this might be a case of linking PIC code which is | |
2171 | never referenced by a dynamic object, in which case we | |
2172 | don't need to generate a procedure linkage table entry | |
2173 | after all. */ | |
70256ad8 AJ |
2174 | |
2175 | /* If this is a local symbol, we resolve it directly without | |
407443a3 | 2176 | creating a procedure linkage table entry. */ |
70256ad8 AJ |
2177 | if (h == NULL) |
2178 | continue; | |
2179 | ||
98b273dc | 2180 | eh->zero_undefweak &= 0x2; |
f5385ebf | 2181 | h->needs_plt = 1; |
79b0c981 | 2182 | h->plt.refcount = 1; |
70256ad8 AJ |
2183 | break; |
2184 | ||
7b81dfbb AJ |
2185 | case R_X86_64_PLTOFF64: |
2186 | /* This tries to form the 'address' of a function relative | |
2187 | to GOT. For global symbols we need a PLT entry. */ | |
2188 | if (h != NULL) | |
2189 | { | |
2190 | h->needs_plt = 1; | |
79b0c981 | 2191 | h->plt.refcount = 1; |
7b81dfbb AJ |
2192 | } |
2193 | goto create_got; | |
2194 | ||
6a3e1bae L |
2195 | case R_X86_64_SIZE32: |
2196 | case R_X86_64_SIZE64: | |
06a6a421 | 2197 | size_reloc = TRUE; |
6a3e1bae L |
2198 | goto do_size; |
2199 | ||
248775ba L |
2200 | case R_X86_64_32: |
2201 | if (!ABI_64_P (abfd)) | |
2202 | goto pointer; | |
1a0670f3 | 2203 | /* Fall through. */ |
cc78d0af AJ |
2204 | case R_X86_64_8: |
2205 | case R_X86_64_16: | |
70256ad8 | 2206 | case R_X86_64_32S: |
338c190a L |
2207 | /* Check relocation overflow as these relocs may lead to |
2208 | run-time relocation overflow. Don't error out for | |
1b71fb54 | 2209 | sections we don't care about, such as debug sections or |
338c190a | 2210 | when relocation overflow check is disabled. */ |
5b9c07b2 | 2211 | if (!htab->params->no_reloc_overflow_check |
6999821f | 2212 | && !converted_reloc |
338c190a L |
2213 | && (bfd_link_pic (info) |
2214 | || (bfd_link_executable (info) | |
2215 | && h != NULL | |
2216 | && !h->def_regular | |
2217 | && h->def_dynamic | |
081b1afe | 2218 | && (sec->flags & SEC_READONLY) == 0))) |
aab921ad | 2219 | return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym, |
338c190a | 2220 | &x86_64_elf_howto_table[r_type]); |
1b71fb54 AJ |
2221 | /* Fall through. */ |
2222 | ||
81e8046d L |
2223 | case R_X86_64_PC8: |
2224 | case R_X86_64_PC16: | |
2225 | case R_X86_64_PC32: | |
2226 | case R_X86_64_PC32_BND: | |
d6ab8113 | 2227 | case R_X86_64_PC64: |
1b71fb54 | 2228 | case R_X86_64_64: |
dc1e8a47 | 2229 | pointer: |
aec6b87e | 2230 | if (eh != NULL && (sec->flags & SEC_CODE) != 0) |
98b273dc | 2231 | eh->zero_undefweak |= 0x2; |
bf52d7c7 L |
2232 | /* We are called after all symbols have been resolved. Only |
2233 | relocation against STT_GNU_IFUNC symbol must go through | |
2234 | PLT. */ | |
d1ed1c7d L |
2235 | if (h != NULL |
2236 | && (bfd_link_executable (info) | |
bf52d7c7 | 2237 | || h->type == STT_GNU_IFUNC)) |
c434dee6 | 2238 | { |
79b0c981 | 2239 | bfd_boolean func_pointer_ref = FALSE; |
233cc9c1 | 2240 | |
5db4f0d3 L |
2241 | if (r_type == R_X86_64_PC32) |
2242 | { | |
2243 | /* Since something like ".long foo - ." may be used | |
2244 | as pointer, make sure that PLT is used if foo is | |
2245 | a function defined in a shared library. */ | |
2246 | if ((sec->flags & SEC_CODE) == 0) | |
451875b4 L |
2247 | { |
2248 | h->pointer_equality_needed = 1; | |
2249 | if (bfd_link_pie (info) | |
2250 | && h->type == STT_FUNC | |
2251 | && !h->def_regular | |
2252 | && h->def_dynamic) | |
2253 | { | |
2254 | h->needs_plt = 1; | |
2255 | h->plt.refcount = 1; | |
2256 | } | |
2257 | } | |
5db4f0d3 L |
2258 | } |
2259 | else if (r_type != R_X86_64_PC32_BND | |
2260 | && r_type != R_X86_64_PC64) | |
04ebc307 L |
2261 | { |
2262 | h->pointer_equality_needed = 1; | |
2263 | /* At run-time, R_X86_64_64 can be resolved for both | |
2264 | x86-64 and x32. But R_X86_64_32 and R_X86_64_32S | |
2265 | can only be resolved for x32. */ | |
2266 | if ((sec->flags & SEC_READONLY) == 0 | |
2267 | && (r_type == R_X86_64_64 | |
2268 | || (!ABI_64_P (abfd) | |
2269 | && (r_type == R_X86_64_32 | |
2270 | || r_type == R_X86_64_32S)))) | |
79b0c981 L |
2271 | func_pointer_ref = TRUE; |
2272 | } | |
2273 | ||
2274 | if (!func_pointer_ref) | |
2275 | { | |
2276 | /* If this reloc is in a read-only section, we might | |
2277 | need a copy reloc. We can't check reliably at this | |
2278 | stage whether the section is read-only, as input | |
2279 | sections have not yet been mapped to output sections. | |
2280 | Tentatively set the flag for now, and correct in | |
2281 | adjust_dynamic_symbol. */ | |
2282 | h->non_got_ref = 1; | |
2283 | ||
2284 | /* We may need a .plt entry if the symbol is a function | |
2285 | defined in a shared lib or is a function referenced | |
2286 | from the code or read-only section. */ | |
2287 | if (!h->def_regular | |
2288 | || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0) | |
2289 | h->plt.refcount = 1; | |
04ebc307 | 2290 | } |
c434dee6 | 2291 | } |
70256ad8 | 2292 | |
06a6a421 | 2293 | size_reloc = FALSE; |
dc1e8a47 | 2294 | do_size: |
382aae06 L |
2295 | if (!no_dynreloc |
2296 | && NEED_DYNAMIC_RELOCATION_P (info, TRUE, h, sec, r_type, | |
2297 | htab->pointer_r_type)) | |
70256ad8 | 2298 | { |
e03a8ed8 L |
2299 | struct elf_dyn_relocs *p; |
2300 | struct elf_dyn_relocs **head; | |
c434dee6 AJ |
2301 | |
2302 | /* We must copy these reloc types into the output file. | |
2303 | Create a reloc section in dynobj and make room for | |
2304 | this reloc. */ | |
70256ad8 AJ |
2305 | if (sreloc == NULL) |
2306 | { | |
83bac4b0 | 2307 | sreloc = _bfd_elf_make_dynamic_reloc_section |
82e96e07 L |
2308 | (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2, |
2309 | abfd, /*rela?*/ TRUE); | |
70256ad8 | 2310 | |
70256ad8 | 2311 | if (sreloc == NULL) |
afd9acee | 2312 | goto error_return; |
70256ad8 AJ |
2313 | } |
2314 | ||
c434dee6 AJ |
2315 | /* If this is a global symbol, we count the number of |
2316 | relocations we need for this symbol. */ | |
2317 | if (h != NULL) | |
aec6b87e | 2318 | head = &eh->dyn_relocs; |
c434dee6 AJ |
2319 | else |
2320 | { | |
2321 | /* Track dynamic relocs needed for local syms too. | |
2322 | We really need local syms available to do this | |
2323 | easily. Oh well. */ | |
c434dee6 | 2324 | asection *s; |
87d72d41 | 2325 | void **vpp; |
87d72d41 AM |
2326 | |
2327 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
2328 | abfd, r_symndx); | |
2329 | if (isym == NULL) | |
afd9acee | 2330 | goto error_return; |
87d72d41 AM |
2331 | |
2332 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
c434dee6 | 2333 | if (s == NULL) |
87d72d41 | 2334 | s = sec; |
70256ad8 | 2335 | |
e81d3500 DD |
2336 | /* Beware of type punned pointers vs strict aliasing |
2337 | rules. */ | |
2338 | vpp = &(elf_section_data (s)->local_dynrel); | |
e03a8ed8 | 2339 | head = (struct elf_dyn_relocs **)vpp; |
c434dee6 | 2340 | } |
70256ad8 | 2341 | |
c434dee6 AJ |
2342 | p = *head; |
2343 | if (p == NULL || p->sec != sec) | |
2344 | { | |
986f0783 | 2345 | size_t amt = sizeof *p; |
d8045f23 | 2346 | |
e03a8ed8 | 2347 | p = ((struct elf_dyn_relocs *) |
c434dee6 | 2348 | bfd_alloc (htab->elf.dynobj, amt)); |
70256ad8 | 2349 | if (p == NULL) |
afd9acee | 2350 | goto error_return; |
c434dee6 AJ |
2351 | p->next = *head; |
2352 | *head = p; | |
2353 | p->sec = sec; | |
2354 | p->count = 0; | |
2355 | p->pc_count = 0; | |
70256ad8 | 2356 | } |
c434dee6 AJ |
2357 | |
2358 | p->count += 1; | |
06a6a421 | 2359 | /* Count size relocation as PC-relative relocation. */ |
daf1c414 | 2360 | if (X86_PCREL_TYPE_P (r_type) || size_reloc) |
c434dee6 | 2361 | p->pc_count += 1; |
70256ad8 AJ |
2362 | } |
2363 | break; | |
fe4770f4 AJ |
2364 | |
2365 | /* This relocation describes the C++ object vtable hierarchy. | |
2366 | Reconstruct it for later use during GC. */ | |
2367 | case R_X86_64_GNU_VTINHERIT: | |
c152c796 | 2368 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
afd9acee | 2369 | goto error_return; |
fe4770f4 AJ |
2370 | break; |
2371 | ||
2372 | /* This relocation describes which C++ vtable entries are actually | |
2373 | used. Record for later use during GC. */ | |
2374 | case R_X86_64_GNU_VTENTRY: | |
a0ea3a14 | 2375 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
afd9acee | 2376 | goto error_return; |
fe4770f4 | 2377 | break; |
c434dee6 AJ |
2378 | |
2379 | default: | |
2380 | break; | |
70256ad8 AJ |
2381 | } |
2382 | } | |
2383 | ||
bedfd056 L |
2384 | if (elf_section_data (sec)->this_hdr.contents != contents) |
2385 | { | |
5e5e02ae | 2386 | if (!converted && !info->keep_memory) |
bedfd056 L |
2387 | free (contents); |
2388 | else | |
2389 | { | |
5e5e02ae L |
2390 | /* Cache the section contents for elf_link_input_bfd if any |
2391 | load is converted or --no-keep-memory isn't used. */ | |
bedfd056 L |
2392 | elf_section_data (sec)->this_hdr.contents = contents; |
2393 | } | |
2394 | } | |
2395 | ||
5e5e02ae L |
2396 | /* Cache relocations if any load is converted. */ |
2397 | if (elf_section_data (sec)->relocs != relocs && converted) | |
2398 | elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs; | |
2399 | ||
b34976b6 | 2400 | return TRUE; |
afd9acee | 2401 | |
dc1e8a47 | 2402 | error_return: |
bedfd056 L |
2403 | if (elf_section_data (sec)->this_hdr.contents != contents) |
2404 | free (contents); | |
afd9acee L |
2405 | sec->check_relocs_failed = 1; |
2406 | return FALSE; | |
70256ad8 AJ |
2407 | } |
2408 | ||
bffbf940 JJ |
2409 | /* Return the relocation value for @tpoff relocation |
2410 | if STT_TLS virtual address is ADDRESS. */ | |
2411 | ||
2412 | static bfd_vma | |
351f65ca | 2413 | elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address) |
bffbf940 | 2414 | { |
e1918d23 | 2415 | struct elf_link_hash_table *htab = elf_hash_table (info); |
7dc98aea RO |
2416 | const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd); |
2417 | bfd_vma static_tls_size; | |
bffbf940 JJ |
2418 | |
2419 | /* If tls_segment is NULL, we should have signalled an error already. */ | |
e1918d23 | 2420 | if (htab->tls_sec == NULL) |
bffbf940 | 2421 | return 0; |
7dc98aea RO |
2422 | |
2423 | /* Consider special static TLS alignment requirements. */ | |
2424 | static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment); | |
2425 | return address - static_tls_size - htab->tls_sec->vma; | |
bffbf940 JJ |
2426 | } |
2427 | ||
8d88c4ca NC |
2428 | /* Relocate an x86_64 ELF section. */ |
2429 | ||
b34976b6 | 2430 | static bfd_boolean |
351f65ca L |
2431 | elf_x86_64_relocate_section (bfd *output_bfd, |
2432 | struct bfd_link_info *info, | |
2433 | bfd *input_bfd, | |
2434 | asection *input_section, | |
2435 | bfd_byte *contents, | |
2436 | Elf_Internal_Rela *relocs, | |
2437 | Elf_Internal_Sym *local_syms, | |
2438 | asection **local_sections) | |
8d88c4ca | 2439 | { |
0afcef53 | 2440 | struct elf_x86_link_hash_table *htab; |
8d88c4ca NC |
2441 | Elf_Internal_Shdr *symtab_hdr; |
2442 | struct elf_link_hash_entry **sym_hashes; | |
2443 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 2444 | bfd_vma *local_tlsdesc_gotents; |
c434dee6 | 2445 | Elf_Internal_Rela *rel; |
60f2e42e | 2446 | Elf_Internal_Rela *wrel; |
8d88c4ca | 2447 | Elf_Internal_Rela *relend; |
38b12349 | 2448 | unsigned int plt_entry_size; |
8d88c4ca | 2449 | |
338c190a L |
2450 | /* Skip if check_relocs failed. */ |
2451 | if (input_section->check_relocs_failed) | |
2452 | return FALSE; | |
2453 | ||
0afcef53 | 2454 | htab = elf_x86_hash_table (info, X86_64_ELF_DATA); |
4dfe6ac6 NC |
2455 | if (htab == NULL) |
2456 | return FALSE; | |
fe53b4a4 | 2457 | |
7af5d5c4 AM |
2458 | if (!is_x86_elf (input_bfd, htab)) |
2459 | { | |
2460 | bfd_set_error (bfd_error_wrong_format); | |
2461 | return FALSE; | |
2462 | } | |
fe53b4a4 | 2463 | |
765e526c | 2464 | plt_entry_size = htab->plt.plt_entry_size; |
0ffa91dd | 2465 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
8d88c4ca NC |
2466 | sym_hashes = elf_sym_hashes (input_bfd); |
2467 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
0afcef53 | 2468 | local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd); |
8d88c4ca | 2469 | |
0afcef53 | 2470 | _bfd_x86_elf_set_tls_module_base (info); |
9f03412a | 2471 | |
60f2e42e | 2472 | rel = wrel = relocs; |
8d88c4ca | 2473 | relend = relocs + input_section->reloc_count; |
60f2e42e | 2474 | for (; rel < relend; wrel++, rel++) |
8d88c4ca | 2475 | { |
419414ea | 2476 | unsigned int r_type, r_type_tls; |
8d88c4ca NC |
2477 | reloc_howto_type *howto; |
2478 | unsigned long r_symndx; | |
2479 | struct elf_link_hash_entry *h; | |
0afcef53 | 2480 | struct elf_x86_link_hash_entry *eh; |
8d88c4ca NC |
2481 | Elf_Internal_Sym *sym; |
2482 | asection *sec; | |
0ff2b86e | 2483 | bfd_vma off, offplt, plt_offset; |
8d88c4ca | 2484 | bfd_vma relocation; |
b34976b6 | 2485 | bfd_boolean unresolved_reloc; |
8d88c4ca | 2486 | bfd_reloc_status_type r; |
bffbf940 | 2487 | int tls_type; |
0ff2b86e | 2488 | asection *base_got, *resolved_plt; |
1788fc08 | 2489 | bfd_vma st_size; |
aec6b87e | 2490 | bfd_boolean resolved_to_zero; |
9e9821dd | 2491 | bfd_boolean relative_reloc; |
78984959 | 2492 | bfd_boolean converted_reloc; |
aebcc8ff | 2493 | bfd_boolean need_copy_reloc_in_pie; |
81e8046d | 2494 | bfd_boolean no_copyreloc_p; |
8d88c4ca | 2495 | |
351f65ca | 2496 | r_type = ELF32_R_TYPE (rel->r_info); |
fe4770f4 AJ |
2497 | if (r_type == (int) R_X86_64_GNU_VTINHERIT |
2498 | || r_type == (int) R_X86_64_GNU_VTENTRY) | |
18954b29 L |
2499 | { |
2500 | if (wrel != rel) | |
2501 | *wrel = *rel; | |
2502 | continue; | |
2503 | } | |
8d88c4ca | 2504 | |
b638b5d5 | 2505 | r_symndx = htab->r_sym (rel->r_info); |
78984959 | 2506 | converted_reloc = (r_type & R_X86_64_converted_reloc_bit) != 0; |
b638b5d5 L |
2507 | if (converted_reloc) |
2508 | { | |
2509 | r_type &= ~R_X86_64_converted_reloc_bit; | |
2510 | rel->r_info = htab->r_info (r_symndx, r_type); | |
2511 | } | |
78984959 | 2512 | |
76268e02 L |
2513 | howto = elf_x86_64_rtype_to_howto (input_bfd, r_type); |
2514 | if (howto == NULL) | |
47aeb64c | 2515 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); |
8d88c4ca | 2516 | |
8d88c4ca NC |
2517 | h = NULL; |
2518 | sym = NULL; | |
2519 | sec = NULL; | |
b34976b6 | 2520 | unresolved_reloc = FALSE; |
8d88c4ca | 2521 | if (r_symndx < symtab_hdr->sh_info) |
8da6118f KH |
2522 | { |
2523 | sym = local_syms + r_symndx; | |
2524 | sec = local_sections[r_symndx]; | |
c434dee6 | 2525 | |
c25bc9fc L |
2526 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, |
2527 | &sec, rel); | |
1788fc08 | 2528 | st_size = sym->st_size; |
c25bc9fc L |
2529 | |
2530 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 2531 | if (!bfd_link_relocatable (info) |
351f65ca | 2532 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
c25bc9fc | 2533 | { |
0afcef53 L |
2534 | h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd, |
2535 | rel, FALSE); | |
c25bc9fc L |
2536 | if (h == NULL) |
2537 | abort (); | |
2538 | ||
eed180f8 | 2539 | /* Set STT_GNU_IFUNC symbol value. */ |
c25bc9fc L |
2540 | h->root.u.def.value = sym->st_value; |
2541 | h->root.u.def.section = sec; | |
2542 | } | |
8da6118f | 2543 | } |
8d88c4ca | 2544 | else |
8da6118f | 2545 | { |
c9736ba0 | 2546 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 2547 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
c434dee6 | 2548 | |
b2a8e766 AM |
2549 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2550 | r_symndx, symtab_hdr, sym_hashes, | |
2551 | h, sec, relocation, | |
62d887d4 | 2552 | unresolved_reloc, warned, ignored); |
1788fc08 | 2553 | st_size = h->size; |
8da6118f | 2554 | } |
ab96bf03 | 2555 | |
dbaa2011 | 2556 | if (sec != NULL && discarded_section (sec)) |
60f2e42e L |
2557 | { |
2558 | _bfd_clear_contents (howto, input_bfd, input_section, | |
0930cb30 | 2559 | contents, rel->r_offset); |
60f2e42e L |
2560 | wrel->r_offset = rel->r_offset; |
2561 | wrel->r_info = 0; | |
2562 | wrel->r_addend = 0; | |
2563 | ||
2564 | /* For ld -r, remove relocations in debug sections against | |
2565 | sections defined in discarded sections. Not done for | |
2566 | eh_frame editing code expects to be present. */ | |
2567 | if (bfd_link_relocatable (info) | |
2568 | && (input_section->flags & SEC_DEBUGGING)) | |
2569 | wrel--; | |
2570 | ||
2571 | continue; | |
2572 | } | |
ab96bf03 | 2573 | |
0e1862bb | 2574 | if (bfd_link_relocatable (info)) |
2d5da473 L |
2575 | { |
2576 | if (wrel != rel) | |
2577 | *wrel = *rel; | |
2578 | continue; | |
2579 | } | |
ab96bf03 | 2580 | |
1788fc08 | 2581 | if (rel->r_addend == 0 && !ABI_64_P (output_bfd)) |
64d25c44 | 2582 | { |
1788fc08 L |
2583 | if (r_type == R_X86_64_64) |
2584 | { | |
2585 | /* For x32, treat R_X86_64_64 like R_X86_64_32 and | |
2586 | zero-extend it to 64bit if addend is zero. */ | |
2587 | r_type = R_X86_64_32; | |
2588 | memset (contents + rel->r_offset + 4, 0, 4); | |
2589 | } | |
2590 | else if (r_type == R_X86_64_SIZE64) | |
2591 | { | |
2592 | /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and | |
2593 | zero-extend it to 64bit if addend is zero. */ | |
2594 | r_type = R_X86_64_SIZE32; | |
2595 | memset (contents + rel->r_offset + 4, 0, 4); | |
2596 | } | |
64d25c44 L |
2597 | } |
2598 | ||
0afcef53 | 2599 | eh = (struct elf_x86_link_hash_entry *) h; |
0ff2b86e | 2600 | |
cbe950e9 L |
2601 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
2602 | it here if it is defined in a non-shared object. */ | |
2603 | if (h != NULL | |
2604 | && h->type == STT_GNU_IFUNC | |
2605 | && h->def_regular) | |
2606 | { | |
cbe950e9 | 2607 | bfd_vma plt_index; |
4c544807 | 2608 | const char *name; |
cbe950e9 | 2609 | |
97dc35c8 L |
2610 | if ((input_section->flags & SEC_ALLOC) == 0) |
2611 | { | |
347a8774 L |
2612 | /* If this is a SHT_NOTE section without SHF_ALLOC, treat |
2613 | STT_GNU_IFUNC symbol as STT_FUNC. */ | |
2614 | if (elf_section_type (input_section) == SHT_NOTE) | |
2615 | goto skip_ifunc; | |
97dc35c8 L |
2616 | /* Dynamic relocs are not propagated for SEC_DEBUGGING |
2617 | sections because such sections are not SEC_ALLOC and | |
2618 | thus ld.so will not process them. */ | |
2619 | if ((input_section->flags & SEC_DEBUGGING) != 0) | |
0eace210 | 2620 | continue; |
97dc35c8 L |
2621 | abort (); |
2622 | } | |
233cc9c1 L |
2623 | |
2624 | switch (r_type) | |
2625 | { | |
2626 | default: | |
2627 | break; | |
2628 | ||
2629 | case R_X86_64_GOTPCREL: | |
2630 | case R_X86_64_GOTPCRELX: | |
2631 | case R_X86_64_REX_GOTPCRELX: | |
2632 | case R_X86_64_GOTPCREL64: | |
2633 | base_got = htab->elf.sgot; | |
2634 | off = h->got.offset; | |
2635 | ||
2636 | if (base_got == NULL) | |
2637 | abort (); | |
2638 | ||
2639 | if (off == (bfd_vma) -1) | |
2640 | { | |
2641 | /* We can't use h->got.offset here to save state, or | |
2642 | even just remember the offset, as finish_dynamic_symbol | |
2643 | would use that as offset into .got. */ | |
2644 | ||
2645 | if (h->plt.offset == (bfd_vma) -1) | |
2646 | abort (); | |
2647 | ||
2648 | if (htab->elf.splt != NULL) | |
2649 | { | |
38b12349 | 2650 | plt_index = (h->plt.offset / plt_entry_size |
765e526c | 2651 | - htab->plt.has_plt0); |
233cc9c1 L |
2652 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
2653 | base_got = htab->elf.sgotplt; | |
2654 | } | |
2655 | else | |
2656 | { | |
2657 | plt_index = h->plt.offset / plt_entry_size; | |
2658 | off = plt_index * GOT_ENTRY_SIZE; | |
2659 | base_got = htab->elf.igotplt; | |
2660 | } | |
2661 | ||
2662 | if (h->dynindx == -1 | |
2663 | || h->forced_local | |
2664 | || info->symbolic) | |
2665 | { | |
2666 | /* This references the local defitionion. We must | |
2667 | initialize this entry in the global offset table. | |
2668 | Since the offset must always be a multiple of 8, | |
2669 | we use the least significant bit to record | |
2670 | whether we have initialized it already. | |
2671 | ||
2672 | When doing a dynamic link, we create a .rela.got | |
2673 | relocation entry to initialize the value. This | |
2674 | is done in the finish_dynamic_symbol routine. */ | |
2675 | if ((off & 1) != 0) | |
2676 | off &= ~1; | |
2677 | else | |
2678 | { | |
2679 | bfd_put_64 (output_bfd, relocation, | |
2680 | base_got->contents + off); | |
2681 | /* Note that this is harmless for the GOTPLT64 | |
2682 | case, as -1 | 1 still is -1. */ | |
2683 | h->got.offset |= 1; | |
2684 | } | |
2685 | } | |
2686 | } | |
2687 | ||
2688 | relocation = (base_got->output_section->vma | |
2689 | + base_got->output_offset + off); | |
2690 | ||
2691 | goto do_relocation; | |
2692 | } | |
2693 | ||
2694 | if (h->plt.offset == (bfd_vma) -1) | |
2695 | { | |
2696 | /* Handle static pointers of STT_GNU_IFUNC symbols. */ | |
2697 | if (r_type == htab->pointer_r_type | |
2698 | && (input_section->flags & SEC_CODE) == 0) | |
2699 | goto do_ifunc_pointer; | |
2700 | goto bad_ifunc_reloc; | |
2701 | } | |
cbe950e9 L |
2702 | |
2703 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
0ff2b86e L |
2704 | if (htab->elf.splt != NULL) |
2705 | { | |
f2c29a16 | 2706 | if (htab->plt_second != NULL) |
0ff2b86e | 2707 | { |
f2c29a16 L |
2708 | resolved_plt = htab->plt_second; |
2709 | plt_offset = eh->plt_second.offset; | |
0ff2b86e L |
2710 | } |
2711 | else | |
2712 | { | |
2713 | resolved_plt = htab->elf.splt; | |
2714 | plt_offset = h->plt.offset; | |
2715 | } | |
2716 | } | |
2717 | else | |
2718 | { | |
2719 | resolved_plt = htab->elf.iplt; | |
2720 | plt_offset = h->plt.offset; | |
2721 | } | |
2722 | ||
2723 | relocation = (resolved_plt->output_section->vma | |
2724 | + resolved_plt->output_offset + plt_offset); | |
cbe950e9 L |
2725 | |
2726 | switch (r_type) | |
2727 | { | |
2728 | default: | |
dc1e8a47 | 2729 | bad_ifunc_reloc: |
4c544807 L |
2730 | if (h->root.root.string) |
2731 | name = h->root.root.string; | |
2732 | else | |
2733 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
2734 | NULL); | |
4eca0228 | 2735 | _bfd_error_handler |
695344c0 | 2736 | /* xgettext:c-format */ |
871b3ab2 | 2737 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
233cc9c1 L |
2738 | "symbol `%s' isn't supported"), input_bfd, |
2739 | howto->name, name); | |
cbe950e9 L |
2740 | bfd_set_error (bfd_error_bad_value); |
2741 | return FALSE; | |
2742 | ||
2743 | case R_X86_64_32S: | |
0e1862bb | 2744 | if (bfd_link_pic (info)) |
cbe950e9 | 2745 | abort (); |
710ab287 L |
2746 | goto do_relocation; |
2747 | ||
248775ba L |
2748 | case R_X86_64_32: |
2749 | if (ABI_64_P (output_bfd)) | |
2750 | goto do_relocation; | |
17672001 | 2751 | /* FALLTHROUGH */ |
eed180f8 | 2752 | case R_X86_64_64: |
dc1e8a47 | 2753 | do_ifunc_pointer: |
710ab287 L |
2754 | if (rel->r_addend != 0) |
2755 | { | |
4c544807 L |
2756 | if (h->root.root.string) |
2757 | name = h->root.root.string; | |
2758 | else | |
2759 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
2760 | sym, NULL); | |
4eca0228 | 2761 | _bfd_error_handler |
695344c0 | 2762 | /* xgettext:c-format */ |
871b3ab2 | 2763 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
2dcf00ce AM |
2764 | "symbol `%s' has non-zero addend: %" PRId64), |
2765 | input_bfd, howto->name, name, (int64_t) rel->r_addend); | |
710ab287 L |
2766 | bfd_set_error (bfd_error_bad_value); |
2767 | return FALSE; | |
2768 | } | |
2769 | ||
2770 | /* Generate dynamic relcoation only when there is a | |
233cc9c1 L |
2771 | non-GOT reference in a shared object or there is no |
2772 | PLT. */ | |
2773 | if ((bfd_link_pic (info) && h->non_got_ref) | |
2774 | || h->plt.offset == (bfd_vma) -1) | |
710ab287 L |
2775 | { |
2776 | Elf_Internal_Rela outrel; | |
710ab287 L |
2777 | asection *sreloc; |
2778 | ||
c25bc9fc L |
2779 | /* Need a dynamic relocation to get the real function |
2780 | address. */ | |
710ab287 L |
2781 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, |
2782 | info, | |
2783 | input_section, | |
2784 | rel->r_offset); | |
2785 | if (outrel.r_offset == (bfd_vma) -1 | |
2786 | || outrel.r_offset == (bfd_vma) -2) | |
2787 | abort (); | |
2788 | ||
2789 | outrel.r_offset += (input_section->output_section->vma | |
2790 | + input_section->output_offset); | |
2791 | ||
cf1070f1 | 2792 | if (POINTER_LOCAL_IFUNC_P (info, h)) |
710ab287 | 2793 | { |
871b3ab2 | 2794 | info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"), |
6322e5c5 L |
2795 | h->root.root.string, |
2796 | h->root.u.def.section->owner); | |
2797 | ||
710ab287 | 2798 | /* This symbol is resolved locally. */ |
56b8aada L |
2799 | outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE); |
2800 | outrel.r_addend = (h->root.u.def.value | |
2801 | + h->root.u.def.section->output_section->vma | |
2802 | + h->root.u.def.section->output_offset); | |
710ab287 L |
2803 | } |
2804 | else | |
2805 | { | |
351f65ca | 2806 | outrel.r_info = htab->r_info (h->dynindx, r_type); |
710ab287 L |
2807 | outrel.r_addend = 0; |
2808 | } | |
2809 | ||
233cc9c1 L |
2810 | /* Dynamic relocations are stored in |
2811 | 1. .rela.ifunc section in PIC object. | |
2812 | 2. .rela.got section in dynamic executable. | |
2813 | 3. .rela.iplt section in static executable. */ | |
2814 | if (bfd_link_pic (info)) | |
2815 | sreloc = htab->elf.irelifunc; | |
2816 | else if (htab->elf.splt != NULL) | |
2817 | sreloc = htab->elf.srelgot; | |
2818 | else | |
2819 | sreloc = htab->elf.irelplt; | |
351f65ca | 2820 | elf_append_rela (output_bfd, sreloc, &outrel); |
710ab287 L |
2821 | |
2822 | /* If this reloc is against an external symbol, we | |
2823 | do not want to fiddle with the addend. Otherwise, | |
2824 | we need to include the symbol value so that it | |
2825 | becomes an addend for the dynamic reloc. For an | |
2826 | internal symbol, we have updated addend. */ | |
56b8aada | 2827 | continue; |
710ab287 | 2828 | } |
17672001 | 2829 | /* FALLTHROUGH */ |
cbe950e9 | 2830 | case R_X86_64_PC32: |
c3320543 | 2831 | case R_X86_64_PC32_BND: |
cbe950e9 L |
2832 | case R_X86_64_PC64: |
2833 | case R_X86_64_PLT32: | |
c3320543 | 2834 | case R_X86_64_PLT32_BND: |
cbe950e9 | 2835 | goto do_relocation; |
cbe950e9 L |
2836 | } |
2837 | } | |
2838 | ||
dc1e8a47 | 2839 | skip_ifunc: |
aec6b87e | 2840 | resolved_to_zero = (eh != NULL |
c5bce5c6 | 2841 | && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh)); |
aec6b87e | 2842 | |
70256ad8 AJ |
2843 | /* When generating a shared object, the relocations handled here are |
2844 | copied into the output file to be resolved at run time. */ | |
2845 | switch (r_type) | |
2846 | { | |
2847 | case R_X86_64_GOT32: | |
7b81dfbb | 2848 | case R_X86_64_GOT64: |
70256ad8 AJ |
2849 | /* Relocation is to the entry for this symbol in the global |
2850 | offset table. */ | |
70256ad8 | 2851 | case R_X86_64_GOTPCREL: |
56ceb5b5 L |
2852 | case R_X86_64_GOTPCRELX: |
2853 | case R_X86_64_REX_GOTPCRELX: | |
7b81dfbb AJ |
2854 | case R_X86_64_GOTPCREL64: |
2855 | /* Use global offset table entry as symbol value. */ | |
2856 | case R_X86_64_GOTPLT64: | |
de194d85 | 2857 | /* This is obsolete and treated the same as GOT64. */ |
6de2ae4a | 2858 | base_got = htab->elf.sgot; |
7b81dfbb | 2859 | |
6de2ae4a | 2860 | if (htab->elf.sgot == NULL) |
c434dee6 | 2861 | abort (); |
053579d7 | 2862 | |
9e9821dd | 2863 | relative_reloc = FALSE; |
51e0a107 | 2864 | if (h != NULL) |
70256ad8 | 2865 | { |
c434dee6 | 2866 | off = h->got.offset; |
7b81dfbb | 2867 | if (h->needs_plt |
eed180f8 | 2868 | && h->plt.offset != (bfd_vma)-1 |
7b81dfbb AJ |
2869 | && off == (bfd_vma)-1) |
2870 | { | |
2871 | /* We can't use h->got.offset here to save | |
2872 | state, or even just remember the offset, as | |
2873 | finish_dynamic_symbol would use that as offset into | |
2874 | .got. */ | |
38b12349 | 2875 | bfd_vma plt_index = (h->plt.offset / plt_entry_size |
765e526c | 2876 | - htab->plt.has_plt0); |
7b81dfbb | 2877 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
6de2ae4a | 2878 | base_got = htab->elf.sgotplt; |
7b81dfbb AJ |
2879 | } |
2880 | ||
2eba97c2 | 2881 | if (RESOLVED_LOCALLY_P (info, h, htab)) |
51e0a107 | 2882 | { |
2eba97c2 L |
2883 | /* We must initialize this entry in the global offset |
2884 | table. Since the offset must always be a multiple | |
2885 | of 8, we use the least significant bit to record | |
2886 | whether we have initialized it already. | |
51e0a107 JH |
2887 | |
2888 | When doing a dynamic link, we create a .rela.got | |
407443a3 AJ |
2889 | relocation entry to initialize the value. This is |
2890 | done in the finish_dynamic_symbol routine. */ | |
51e0a107 JH |
2891 | if ((off & 1) != 0) |
2892 | off &= ~1; | |
2893 | else | |
2894 | { | |
2895 | bfd_put_64 (output_bfd, relocation, | |
7b81dfbb AJ |
2896 | base_got->contents + off); |
2897 | /* Note that this is harmless for the GOTPLT64 case, | |
eed180f8 | 2898 | as -1 | 1 still is -1. */ |
51e0a107 | 2899 | h->got.offset |= 1; |
9e9821dd | 2900 | |
f70656b2 | 2901 | if (GENERATE_RELATIVE_RELOC_P (info, h)) |
9e9821dd L |
2902 | { |
2903 | /* If this symbol isn't dynamic in PIC, | |
2904 | generate R_X86_64_RELATIVE here. */ | |
2905 | eh->no_finish_dynamic_symbol = 1; | |
2906 | relative_reloc = TRUE; | |
2907 | } | |
51e0a107 JH |
2908 | } |
2909 | } | |
053579d7 | 2910 | else |
b34976b6 | 2911 | unresolved_reloc = FALSE; |
70256ad8 | 2912 | } |
51e0a107 JH |
2913 | else |
2914 | { | |
c434dee6 AJ |
2915 | if (local_got_offsets == NULL) |
2916 | abort (); | |
51e0a107 JH |
2917 | |
2918 | off = local_got_offsets[r_symndx]; | |
2919 | ||
2920 | /* The offset must always be a multiple of 8. We use | |
407443a3 AJ |
2921 | the least significant bit to record whether we have |
2922 | already generated the necessary reloc. */ | |
51e0a107 JH |
2923 | if ((off & 1) != 0) |
2924 | off &= ~1; | |
2925 | else | |
2926 | { | |
c434dee6 | 2927 | bfd_put_64 (output_bfd, relocation, |
7b81dfbb | 2928 | base_got->contents + off); |
9e9821dd | 2929 | local_got_offsets[r_symndx] |= 1; |
51e0a107 | 2930 | |
382aae06 L |
2931 | /* NB: GOTPCREL relocations against local absolute |
2932 | symbol store relocation value in the GOT slot | |
2933 | without relative relocation. */ | |
2934 | if (bfd_link_pic (info) | |
2935 | && !(sym->st_shndx == SHN_ABS | |
2936 | && (r_type == R_X86_64_GOTPCREL | |
2937 | || r_type == R_X86_64_GOTPCRELX | |
2938 | || r_type == R_X86_64_REX_GOTPCRELX))) | |
9e9821dd | 2939 | relative_reloc = TRUE; |
51e0a107 | 2940 | } |
51e0a107 | 2941 | } |
6a2bda3f | 2942 | |
9e9821dd L |
2943 | if (relative_reloc) |
2944 | { | |
2945 | asection *s; | |
2946 | Elf_Internal_Rela outrel; | |
2947 | ||
2948 | /* We need to generate a R_X86_64_RELATIVE reloc | |
2949 | for the dynamic linker. */ | |
2950 | s = htab->elf.srelgot; | |
2951 | if (s == NULL) | |
2952 | abort (); | |
2953 | ||
2954 | outrel.r_offset = (base_got->output_section->vma | |
2955 | + base_got->output_offset | |
2956 | + off); | |
2957 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); | |
2958 | outrel.r_addend = relocation; | |
2959 | elf_append_rela (output_bfd, s, &outrel); | |
2960 | } | |
2961 | ||
c434dee6 AJ |
2962 | if (off >= (bfd_vma) -2) |
2963 | abort (); | |
2964 | ||
7b81dfbb AJ |
2965 | relocation = base_got->output_section->vma |
2966 | + base_got->output_offset + off; | |
56ceb5b5 L |
2967 | if (r_type != R_X86_64_GOTPCREL |
2968 | && r_type != R_X86_64_GOTPCRELX | |
2969 | && r_type != R_X86_64_REX_GOTPCRELX | |
2970 | && r_type != R_X86_64_GOTPCREL64) | |
6de2ae4a L |
2971 | relocation -= htab->elf.sgotplt->output_section->vma |
2972 | - htab->elf.sgotplt->output_offset; | |
c434dee6 | 2973 | |
70256ad8 AJ |
2974 | break; |
2975 | ||
d6ab8113 JB |
2976 | case R_X86_64_GOTOFF64: |
2977 | /* Relocation is relative to the start of the global offset | |
2978 | table. */ | |
2979 | ||
3d949995 L |
2980 | /* Check to make sure it isn't a protected function or data |
2981 | symbol for shared library since it may not be local when | |
e3c0e327 L |
2982 | used as function address or with copy relocation. We also |
2983 | need to make sure that a symbol is referenced locally. */ | |
0e1862bb | 2984 | if (bfd_link_pic (info) && h) |
d6ab8113 | 2985 | { |
e3c0e327 L |
2986 | if (!h->def_regular) |
2987 | { | |
2988 | const char *v; | |
2989 | ||
2990 | switch (ELF_ST_VISIBILITY (h->other)) | |
2991 | { | |
2992 | case STV_HIDDEN: | |
2993 | v = _("hidden symbol"); | |
2994 | break; | |
2995 | case STV_INTERNAL: | |
2996 | v = _("internal symbol"); | |
2997 | break; | |
2998 | case STV_PROTECTED: | |
2999 | v = _("protected symbol"); | |
3000 | break; | |
3001 | default: | |
3002 | v = _("symbol"); | |
3003 | break; | |
3004 | } | |
3005 | ||
4eca0228 | 3006 | _bfd_error_handler |
695344c0 | 3007 | /* xgettext:c-format */ |
871b3ab2 | 3008 | (_("%pB: relocation R_X86_64_GOTOFF64 against undefined %s" |
63a5468a | 3009 | " `%s' can not be used when making a shared object"), |
e3c0e327 L |
3010 | input_bfd, v, h->root.root.string); |
3011 | bfd_set_error (bfd_error_bad_value); | |
3012 | return FALSE; | |
3013 | } | |
0e1862bb | 3014 | else if (!bfd_link_executable (info) |
6999821f | 3015 | && !SYMBOL_REFERENCES_LOCAL_P (info, h) |
e3c0e327 L |
3016 | && (h->type == STT_FUNC |
3017 | || h->type == STT_OBJECT) | |
3018 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
3019 | { | |
4eca0228 | 3020 | _bfd_error_handler |
da0d12d2 | 3021 | /* xgettext:c-format */ |
871b3ab2 | 3022 | (_("%pB: relocation R_X86_64_GOTOFF64 against protected %s" |
63a5468a | 3023 | " `%s' can not be used when making a shared object"), |
e3c0e327 L |
3024 | input_bfd, |
3025 | h->type == STT_FUNC ? "function" : "data", | |
3026 | h->root.root.string); | |
3027 | bfd_set_error (bfd_error_bad_value); | |
da0d12d2 | 3028 | return FALSE; |
e3c0e327 | 3029 | } |
d6ab8113 JB |
3030 | } |
3031 | ||
3032 | /* Note that sgot is not involved in this | |
3033 | calculation. We always want the start of .got.plt. If we | |
3034 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
3035 | permitted by the ABI, we might have to change this | |
3036 | calculation. */ | |
6de2ae4a L |
3037 | relocation -= htab->elf.sgotplt->output_section->vma |
3038 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
3039 | break; |
3040 | ||
3041 | case R_X86_64_GOTPC32: | |
7b81dfbb | 3042 | case R_X86_64_GOTPC64: |
d6ab8113 | 3043 | /* Use global offset table as symbol value. */ |
6de2ae4a L |
3044 | relocation = htab->elf.sgotplt->output_section->vma |
3045 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
3046 | unresolved_reloc = FALSE; |
3047 | break; | |
7b81dfbb AJ |
3048 | |
3049 | case R_X86_64_PLTOFF64: | |
3050 | /* Relocation is PLT entry relative to GOT. For local | |
3051 | symbols it's the symbol itself relative to GOT. */ | |
eed180f8 | 3052 | if (h != NULL |
7b81dfbb | 3053 | /* See PLT32 handling. */ |
9d734efa L |
3054 | && (h->plt.offset != (bfd_vma) -1 |
3055 | || eh->plt_got.offset != (bfd_vma) -1) | |
6de2ae4a | 3056 | && htab->elf.splt != NULL) |
7b81dfbb | 3057 | { |
9d734efa L |
3058 | if (eh->plt_got.offset != (bfd_vma) -1) |
3059 | { | |
3060 | /* Use the GOT PLT. */ | |
3061 | resolved_plt = htab->plt_got; | |
3062 | plt_offset = eh->plt_got.offset; | |
3063 | } | |
f2c29a16 | 3064 | else if (htab->plt_second != NULL) |
0ff2b86e | 3065 | { |
f2c29a16 L |
3066 | resolved_plt = htab->plt_second; |
3067 | plt_offset = eh->plt_second.offset; | |
0ff2b86e L |
3068 | } |
3069 | else | |
3070 | { | |
3071 | resolved_plt = htab->elf.splt; | |
3072 | plt_offset = h->plt.offset; | |
3073 | } | |
3074 | ||
3075 | relocation = (resolved_plt->output_section->vma | |
3076 | + resolved_plt->output_offset | |
3077 | + plt_offset); | |
7b81dfbb AJ |
3078 | unresolved_reloc = FALSE; |
3079 | } | |
3080 | ||
6de2ae4a L |
3081 | relocation -= htab->elf.sgotplt->output_section->vma |
3082 | + htab->elf.sgotplt->output_offset; | |
7b81dfbb | 3083 | break; |
d6ab8113 | 3084 | |
70256ad8 | 3085 | case R_X86_64_PLT32: |
c3320543 | 3086 | case R_X86_64_PLT32_BND: |
70256ad8 AJ |
3087 | /* Relocation is to the entry for this symbol in the |
3088 | procedure linkage table. */ | |
3089 | ||
3090 | /* Resolve a PLT32 reloc against a local symbol directly, | |
407443a3 | 3091 | without using the procedure linkage table. */ |
70256ad8 AJ |
3092 | if (h == NULL) |
3093 | break; | |
3094 | ||
dd7e64d4 L |
3095 | if ((h->plt.offset == (bfd_vma) -1 |
3096 | && eh->plt_got.offset == (bfd_vma) -1) | |
6de2ae4a | 3097 | || htab->elf.splt == NULL) |
70256ad8 AJ |
3098 | { |
3099 | /* We didn't make a PLT entry for this symbol. This | |
407443a3 AJ |
3100 | happens when statically linking PIC code, or when |
3101 | using -Bsymbolic. */ | |
70256ad8 AJ |
3102 | break; |
3103 | } | |
3104 | ||
dc1e8a47 | 3105 | use_plt: |
dd7e64d4 | 3106 | if (h->plt.offset != (bfd_vma) -1) |
0ff2b86e | 3107 | { |
f2c29a16 | 3108 | if (htab->plt_second != NULL) |
dd7e64d4 | 3109 | { |
f2c29a16 L |
3110 | resolved_plt = htab->plt_second; |
3111 | plt_offset = eh->plt_second.offset; | |
dd7e64d4 L |
3112 | } |
3113 | else | |
3114 | { | |
3115 | resolved_plt = htab->elf.splt; | |
3116 | plt_offset = h->plt.offset; | |
3117 | } | |
0ff2b86e L |
3118 | } |
3119 | else | |
3120 | { | |
dd7e64d4 L |
3121 | /* Use the GOT PLT. */ |
3122 | resolved_plt = htab->plt_got; | |
3123 | plt_offset = eh->plt_got.offset; | |
0ff2b86e L |
3124 | } |
3125 | ||
3126 | relocation = (resolved_plt->output_section->vma | |
3127 | + resolved_plt->output_offset | |
3128 | + plt_offset); | |
b34976b6 | 3129 | unresolved_reloc = FALSE; |
70256ad8 AJ |
3130 | break; |
3131 | ||
1788fc08 L |
3132 | case R_X86_64_SIZE32: |
3133 | case R_X86_64_SIZE64: | |
1788fc08 L |
3134 | /* Set to symbol size. */ |
3135 | relocation = st_size; | |
3136 | goto direct; | |
3137 | ||
fd8ab9e5 AJ |
3138 | case R_X86_64_PC8: |
3139 | case R_X86_64_PC16: | |
3140 | case R_X86_64_PC32: | |
c3320543 | 3141 | case R_X86_64_PC32_BND: |
81e8046d L |
3142 | /* Don't complain about -fPIC if the symbol is undefined when |
3143 | building executable unless it is unresolved weak symbol, | |
3144 | references a dynamic definition in PIE or -z nocopyreloc | |
3145 | is used. */ | |
3146 | no_copyreloc_p | |
3147 | = (info->nocopyreloc | |
3148 | || (h != NULL | |
3149 | && !h->root.linker_def | |
3150 | && !h->root.ldscript_def | |
3151 | && eh->def_protected | |
3152 | && elf_has_no_copy_on_protected (h->root.u.def.section->owner))); | |
3153 | ||
3154 | if ((input_section->flags & SEC_ALLOC) != 0 | |
3155 | && (input_section->flags & SEC_READONLY) != 0 | |
3156 | && h != NULL | |
3157 | && ((bfd_link_executable (info) | |
3158 | && ((h->root.type == bfd_link_hash_undefweak | |
3159 | && (eh == NULL | |
3160 | || !UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, | |
3161 | eh))) | |
3162 | || (bfd_link_pie (info) | |
3163 | && !SYMBOL_DEFINED_NON_SHARED_P (h) | |
3164 | && h->def_dynamic) | |
3165 | || (no_copyreloc_p | |
3166 | && h->def_dynamic | |
3167 | && !(h->root.u.def.section->flags & SEC_CODE)))) | |
3168 | || bfd_link_dll (info))) | |
3169 | { | |
3170 | bfd_boolean fail = FALSE; | |
3171 | if (SYMBOL_REFERENCES_LOCAL_P (info, h)) | |
3172 | { | |
3173 | /* Symbol is referenced locally. Make sure it is | |
3174 | defined locally. */ | |
3175 | fail = !SYMBOL_DEFINED_NON_SHARED_P (h); | |
3176 | } | |
3177 | else if (bfd_link_pie (info)) | |
3178 | { | |
3179 | /* We can only use PC-relative relocations in PIE | |
3180 | from non-code sections. */ | |
3181 | if (h->type == STT_FUNC | |
3182 | && (sec->flags & SEC_CODE) != 0) | |
3183 | fail = TRUE; | |
3184 | } | |
3185 | else if (no_copyreloc_p || bfd_link_dll (info)) | |
3186 | { | |
3187 | /* Symbol doesn't need copy reloc and isn't | |
3188 | referenced locally. Don't allow PC-relative | |
3189 | relocations against default and protected | |
3190 | symbols since address of protected function | |
3191 | and location of protected data may not be in | |
3192 | the shared object. */ | |
3193 | fail = (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3194 | || ELF_ST_VISIBILITY (h->other) == STV_PROTECTED); | |
3195 | } | |
3196 | ||
3197 | if (fail) | |
3198 | return elf_x86_64_need_pic (info, input_bfd, input_section, | |
3199 | h, NULL, NULL, howto); | |
3200 | } | |
451875b4 L |
3201 | /* Since x86-64 has PC-relative PLT, we can use PLT in PIE |
3202 | as function address. */ | |
81e8046d L |
3203 | else if (h != NULL |
3204 | && (input_section->flags & SEC_CODE) == 0 | |
3205 | && bfd_link_pie (info) | |
3206 | && h->type == STT_FUNC | |
3207 | && !h->def_regular | |
3208 | && h->def_dynamic) | |
451875b4 | 3209 | goto use_plt; |
6610a52d L |
3210 | /* Fall through. */ |
3211 | ||
70256ad8 AJ |
3212 | case R_X86_64_8: |
3213 | case R_X86_64_16: | |
3214 | case R_X86_64_32: | |
d6ab8113 | 3215 | case R_X86_64_PC64: |
6b3db546 | 3216 | case R_X86_64_64: |
80643fbc | 3217 | /* FIXME: The ABI says the linker should make sure the value is |
407443a3 | 3218 | the same when it's zeroextended to 64 bit. */ |
c434dee6 | 3219 | |
dc1e8a47 | 3220 | direct: |
b1e24c02 | 3221 | if ((input_section->flags & SEC_ALLOC) == 0) |
c434dee6 AJ |
3222 | break; |
3223 | ||
aebcc8ff L |
3224 | need_copy_reloc_in_pie = (bfd_link_pie (info) |
3225 | && h != NULL | |
3226 | && (h->needs_copy | |
3227 | || eh->needs_copy | |
3228 | || (h->root.type | |
3229 | == bfd_link_hash_undefined)) | |
3230 | && (X86_PCREL_TYPE_P (r_type) | |
3231 | || X86_SIZE_TYPE_P (r_type))); | |
3232 | ||
382aae06 | 3233 | if (GENERATE_DYNAMIC_RELOCATION_P (info, eh, r_type, sec, |
aebcc8ff L |
3234 | need_copy_reloc_in_pie, |
3235 | resolved_to_zero, FALSE)) | |
70256ad8 AJ |
3236 | { |
3237 | Elf_Internal_Rela outrel; | |
b34976b6 | 3238 | bfd_boolean skip, relocate; |
c434dee6 | 3239 | asection *sreloc; |
70256ad8 AJ |
3240 | |
3241 | /* When generating a shared object, these relocations | |
3242 | are copied into the output file to be resolved at run | |
407443a3 | 3243 | time. */ |
b34976b6 AM |
3244 | skip = FALSE; |
3245 | relocate = FALSE; | |
70256ad8 | 3246 | |
c629eae0 JJ |
3247 | outrel.r_offset = |
3248 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
c434dee6 | 3249 | rel->r_offset); |
c629eae0 | 3250 | if (outrel.r_offset == (bfd_vma) -1) |
b34976b6 | 3251 | skip = TRUE; |
0fb19cbc | 3252 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3253 | skip = TRUE, relocate = TRUE; |
70256ad8 AJ |
3254 | |
3255 | outrel.r_offset += (input_section->output_section->vma | |
3256 | + input_section->output_offset); | |
3257 | ||
3258 | if (skip) | |
0bb2d96a | 3259 | memset (&outrel, 0, sizeof outrel); |
c434dee6 | 3260 | |
e74399c4 | 3261 | else if (COPY_INPUT_RELOC_P (info, h, r_type)) |
70256ad8 | 3262 | { |
351f65ca | 3263 | outrel.r_info = htab->r_info (h->dynindx, r_type); |
c434dee6 | 3264 | outrel.r_addend = rel->r_addend; |
70256ad8 AJ |
3265 | } |
3266 | else | |
3267 | { | |
4c10bbaa L |
3268 | /* This symbol is local, or marked to become local. |
3269 | When relocation overflow check is disabled, we | |
3270 | convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */ | |
3271 | if (r_type == htab->pointer_r_type | |
3272 | || (r_type == R_X86_64_32 | |
5b9c07b2 | 3273 | && htab->params->no_reloc_overflow_check)) |
607c0e09 | 3274 | { |
b34976b6 | 3275 | relocate = TRUE; |
351f65ca | 3276 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
607c0e09 AS |
3277 | outrel.r_addend = relocation + rel->r_addend; |
3278 | } | |
64d25c44 L |
3279 | else if (r_type == R_X86_64_64 |
3280 | && !ABI_64_P (output_bfd)) | |
3281 | { | |
3282 | relocate = TRUE; | |
3283 | outrel.r_info = htab->r_info (0, | |
3284 | R_X86_64_RELATIVE64); | |
3285 | outrel.r_addend = relocation + rel->r_addend; | |
8cf0d2dd L |
3286 | /* Check addend overflow. */ |
3287 | if ((outrel.r_addend & 0x80000000) | |
3288 | != (rel->r_addend & 0x80000000)) | |
3289 | { | |
3290 | const char *name; | |
268a8d3a | 3291 | int addend = rel->r_addend; |
8cf0d2dd L |
3292 | if (h && h->root.root.string) |
3293 | name = h->root.root.string; | |
3294 | else | |
3295 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
3296 | sym, NULL); | |
d42c267e AM |
3297 | _bfd_error_handler |
3298 | /* xgettext:c-format */ | |
871b3ab2 | 3299 | (_("%pB: addend %s%#x in relocation %s against " |
2dcf00ce AM |
3300 | "symbol `%s' at %#" PRIx64 |
3301 | " in section `%pA' is out of range"), | |
d42c267e | 3302 | input_bfd, addend < 0 ? "-" : "", addend, |
2dcf00ce AM |
3303 | howto->name, name, (uint64_t) rel->r_offset, |
3304 | input_section); | |
8cf0d2dd L |
3305 | bfd_set_error (bfd_error_bad_value); |
3306 | return FALSE; | |
3307 | } | |
64d25c44 | 3308 | } |
607c0e09 AS |
3309 | else |
3310 | { | |
3311 | long sindx; | |
3312 | ||
8517fae7 | 3313 | if (bfd_is_abs_section (sec)) |
607c0e09 AS |
3314 | sindx = 0; |
3315 | else if (sec == NULL || sec->owner == NULL) | |
3316 | { | |
3317 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3318 | return FALSE; |
607c0e09 AS |
3319 | } |
3320 | else | |
3321 | { | |
3322 | asection *osec; | |
3323 | ||
74541ad4 AM |
3324 | /* We are turning this relocation into one |
3325 | against a section symbol. It would be | |
3326 | proper to subtract the symbol's value, | |
3327 | osec->vma, from the emitted reloc addend, | |
3328 | but ld.so expects buggy relocs. */ | |
607c0e09 AS |
3329 | osec = sec->output_section; |
3330 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
3331 | if (sindx == 0) |
3332 | { | |
3333 | asection *oi = htab->elf.text_index_section; | |
3334 | sindx = elf_section_data (oi)->dynindx; | |
3335 | } | |
3336 | BFD_ASSERT (sindx != 0); | |
607c0e09 AS |
3337 | } |
3338 | ||
351f65ca | 3339 | outrel.r_info = htab->r_info (sindx, r_type); |
607c0e09 AS |
3340 | outrel.r_addend = relocation + rel->r_addend; |
3341 | } | |
70256ad8 AJ |
3342 | } |
3343 | ||
cbe950e9 | 3344 | sreloc = elf_section_data (input_section)->sreloc; |
d8045f23 | 3345 | |
62d78908 L |
3346 | if (sreloc == NULL || sreloc->contents == NULL) |
3347 | { | |
3348 | r = bfd_reloc_notsupported; | |
3349 | goto check_relocation_error; | |
3350 | } | |
c434dee6 | 3351 | |
351f65ca | 3352 | elf_append_rela (output_bfd, sreloc, &outrel); |
70256ad8 AJ |
3353 | |
3354 | /* If this reloc is against an external symbol, we do | |
3355 | not want to fiddle with the addend. Otherwise, we | |
3356 | need to include the symbol value so that it becomes | |
3357 | an addend for the dynamic reloc. */ | |
0f88be7a | 3358 | if (! relocate) |
70256ad8 AJ |
3359 | continue; |
3360 | } | |
3361 | ||
3362 | break; | |
3363 | ||
bffbf940 | 3364 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
3365 | case R_X86_64_GOTPC32_TLSDESC: |
3366 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 3367 | case R_X86_64_GOTTPOFF: |
bffbf940 JJ |
3368 | tls_type = GOT_UNKNOWN; |
3369 | if (h == NULL && local_got_offsets) | |
0afcef53 | 3370 | tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx]; |
bffbf940 | 3371 | else if (h != NULL) |
0afcef53 | 3372 | tls_type = elf_x86_hash_entry (h)->tls_type; |
142411ca | 3373 | |
419414ea | 3374 | r_type_tls = r_type; |
351f65ca L |
3375 | if (! elf_x86_64_tls_transition (info, input_bfd, |
3376 | input_section, contents, | |
3377 | symtab_hdr, sym_hashes, | |
419414ea | 3378 | &r_type_tls, tls_type, rel, |
bedfd056 | 3379 | relend, h, r_symndx, TRUE)) |
534a31f6 | 3380 | return FALSE; |
bffbf940 | 3381 | |
419414ea | 3382 | if (r_type_tls == R_X86_64_TPOFF32) |
bffbf940 | 3383 | { |
142411ca L |
3384 | bfd_vma roff = rel->r_offset; |
3385 | ||
bffbf940 | 3386 | BFD_ASSERT (! unresolved_reloc); |
142411ca | 3387 | |
419414ea | 3388 | if (r_type == R_X86_64_TLSGD) |
bffbf940 | 3389 | { |
52bc799a | 3390 | /* GD->LE transition. For 64bit, change |
e2cbcd91 L |
3391 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
3392 | .word 0x6666; rex64; call __tls_get_addr@PLT | |
3393 | or | |
3394 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi | |
3395 | .byte 0x66; rex64 | |
3396 | call *__tls_get_addr@GOTPCREL(%rip) | |
3397 | which may be converted to | |
3398 | addr32 call __tls_get_addr | |
52bc799a | 3399 | into: |
e2cbcd91 L |
3400 | movq %fs:0, %rax |
3401 | leaq foo@tpoff(%rax), %rax | |
52bc799a | 3402 | For 32bit, change |
e2cbcd91 L |
3403 | leaq foo@tlsgd(%rip), %rdi |
3404 | .word 0x6666; rex64; call __tls_get_addr@PLT | |
3405 | or | |
3406 | leaq foo@tlsgd(%rip), %rdi | |
3407 | .byte 0x66; rex64 | |
3408 | call *__tls_get_addr@GOTPCREL(%rip) | |
3409 | which may be converted to | |
3410 | addr32 call __tls_get_addr | |
52bc799a | 3411 | into: |
e2cbcd91 L |
3412 | movl %fs:0, %eax |
3413 | leaq foo@tpoff(%rax), %rax | |
5c98a14e | 3414 | For largepic, change: |
e2cbcd91 L |
3415 | leaq foo@tlsgd(%rip), %rdi |
3416 | movabsq $__tls_get_addr@pltoff, %rax | |
3417 | addq %r15, %rax | |
3418 | call *%rax | |
5c98a14e | 3419 | into: |
e2cbcd91 L |
3420 | movq %fs:0, %rax |
3421 | leaq foo@tpoff(%rax), %rax | |
3422 | nopw 0x0(%rax,%rax,1) */ | |
5c98a14e | 3423 | int largepic = 0; |
e2cbcd91 | 3424 | if (ABI_64_P (output_bfd)) |
5c98a14e | 3425 | { |
e2cbcd91 L |
3426 | if (contents[roff + 5] == 0xb8) |
3427 | { | |
418d4036 L |
3428 | if (roff < 3 |
3429 | || (roff - 3 + 22) > input_section->size) | |
3430 | { | |
dc1e8a47 | 3431 | corrupt_input: |
418d4036 L |
3432 | info->callbacks->einfo |
3433 | (_("%F%P: corrupt input: %pB\n"), | |
3434 | input_bfd); | |
3435 | return FALSE; | |
3436 | } | |
e2cbcd91 L |
3437 | memcpy (contents + roff - 3, |
3438 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80" | |
3439 | "\0\0\0\0\x66\x0f\x1f\x44\0", 22); | |
3440 | largepic = 1; | |
3441 | } | |
3442 | else | |
418d4036 L |
3443 | { |
3444 | if (roff < 4 | |
3445 | || (roff - 4 + 16) > input_section->size) | |
3446 | goto corrupt_input; | |
3447 | memcpy (contents + roff - 4, | |
3448 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", | |
3449 | 16); | |
3450 | } | |
5c98a14e | 3451 | } |
52bc799a | 3452 | else |
418d4036 L |
3453 | { |
3454 | if (roff < 3 | |
3455 | || (roff - 3 + 15) > input_section->size) | |
3456 | goto corrupt_input; | |
3457 | memcpy (contents + roff - 3, | |
3458 | "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", | |
3459 | 15); | |
3460 | } | |
eb4ff4d6 | 3461 | bfd_put_32 (output_bfd, |
351f65ca | 3462 | elf_x86_64_tpoff (info, relocation), |
5c98a14e | 3463 | contents + roff + 8 + largepic); |
e2cbcd91 L |
3464 | /* Skip R_X86_64_PC32, R_X86_64_PLT32, |
3465 | R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */ | |
bffbf940 | 3466 | rel++; |
60f2e42e | 3467 | wrel++; |
bffbf940 JJ |
3468 | continue; |
3469 | } | |
419414ea | 3470 | else if (r_type == R_X86_64_GOTPC32_TLSDESC) |
67a4f2b7 AO |
3471 | { |
3472 | /* GDesc -> LE transition. | |
3473 | It's originally something like: | |
14470f07 L |
3474 | leaq x@tlsdesc(%rip), %rax <--- LP64 mode. |
3475 | rex leal x@tlsdesc(%rip), %eax <--- X32 mode. | |
67a4f2b7 AO |
3476 | |
3477 | Change it to: | |
14470f07 L |
3478 | movq $x@tpoff, %rax <--- LP64 mode. |
3479 | rex movl $x@tpoff, %eax <--- X32 mode. | |
3480 | */ | |
67a4f2b7 | 3481 | |
c9736ba0 | 3482 | unsigned int val, type; |
67a4f2b7 | 3483 | |
418d4036 L |
3484 | if (roff < 3) |
3485 | goto corrupt_input; | |
67a4f2b7 | 3486 | type = bfd_get_8 (input_bfd, contents + roff - 3); |
67a4f2b7 | 3487 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
14470f07 L |
3488 | bfd_put_8 (output_bfd, |
3489 | (type & 0x48) | ((type >> 2) & 1), | |
67a4f2b7 AO |
3490 | contents + roff - 3); |
3491 | bfd_put_8 (output_bfd, 0xc7, contents + roff - 2); | |
3492 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3493 | contents + roff - 1); | |
eb4ff4d6 | 3494 | bfd_put_32 (output_bfd, |
351f65ca | 3495 | elf_x86_64_tpoff (info, relocation), |
67a4f2b7 AO |
3496 | contents + roff); |
3497 | continue; | |
3498 | } | |
419414ea | 3499 | else if (r_type == R_X86_64_TLSDESC_CALL) |
67a4f2b7 AO |
3500 | { |
3501 | /* GDesc -> LE transition. | |
3502 | It's originally: | |
14470f07 L |
3503 | call *(%rax) <--- LP64 mode. |
3504 | call *(%eax) <--- X32 mode. | |
67a4f2b7 | 3505 | Turn it into: |
14470f07 L |
3506 | xchg %ax,%ax <-- LP64 mode. |
3507 | nopl (%rax) <-- X32 mode. | |
3508 | */ | |
3509 | unsigned int prefix = 0; | |
3510 | if (!ABI_64_P (input_bfd)) | |
3511 | { | |
3512 | /* Check for call *x@tlsdesc(%eax). */ | |
3513 | if (contents[roff] == 0x67) | |
3514 | prefix = 1; | |
3515 | } | |
3516 | if (prefix) | |
3517 | { | |
3518 | bfd_put_8 (output_bfd, 0x0f, contents + roff); | |
3519 | bfd_put_8 (output_bfd, 0x1f, contents + roff + 1); | |
3520 | bfd_put_8 (output_bfd, 0x00, contents + roff + 2); | |
3521 | } | |
3522 | else | |
3523 | { | |
3524 | bfd_put_8 (output_bfd, 0x66, contents + roff); | |
3525 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); | |
3526 | } | |
67a4f2b7 AO |
3527 | continue; |
3528 | } | |
419414ea | 3529 | else if (r_type == R_X86_64_GOTTPOFF) |
bffbf940 | 3530 | { |
bffbf940 | 3531 | /* IE->LE transition: |
cf61b747 | 3532 | For 64bit, originally it can be one of: |
bffbf940 JJ |
3533 | movq foo@gottpoff(%rip), %reg |
3534 | addq foo@gottpoff(%rip), %reg | |
3535 | We change it into: | |
3536 | movq $foo, %reg | |
3537 | leaq foo(%reg), %reg | |
cf61b747 L |
3538 | addq $foo, %reg. |
3539 | For 32bit, originally it can be one of: | |
3540 | movq foo@gottpoff(%rip), %reg | |
3541 | addl foo@gottpoff(%rip), %reg | |
3542 | We change it into: | |
3543 | movq $foo, %reg | |
3544 | leal foo(%reg), %reg | |
3545 | addl $foo, %reg. */ | |
142411ca L |
3546 | |
3547 | unsigned int val, type, reg; | |
3548 | ||
cf61b747 L |
3549 | if (roff >= 3) |
3550 | val = bfd_get_8 (input_bfd, contents + roff - 3); | |
3551 | else | |
418d4036 L |
3552 | { |
3553 | if (roff < 2) | |
3554 | goto corrupt_input; | |
3555 | val = 0; | |
3556 | } | |
142411ca L |
3557 | type = bfd_get_8 (input_bfd, contents + roff - 2); |
3558 | reg = bfd_get_8 (input_bfd, contents + roff - 1); | |
bffbf940 | 3559 | reg >>= 3; |
bffbf940 JJ |
3560 | if (type == 0x8b) |
3561 | { | |
3562 | /* movq */ | |
3563 | if (val == 0x4c) | |
418d4036 L |
3564 | { |
3565 | if (roff < 3) | |
3566 | goto corrupt_input; | |
3567 | bfd_put_8 (output_bfd, 0x49, | |
3568 | contents + roff - 3); | |
3569 | } | |
4a4c5f25 | 3570 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
418d4036 L |
3571 | { |
3572 | if (roff < 3) | |
3573 | goto corrupt_input; | |
3574 | bfd_put_8 (output_bfd, 0x41, | |
3575 | contents + roff - 3); | |
3576 | } | |
bffbf940 | 3577 | bfd_put_8 (output_bfd, 0xc7, |
142411ca | 3578 | contents + roff - 2); |
bffbf940 | 3579 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 3580 | contents + roff - 1); |
bffbf940 JJ |
3581 | } |
3582 | else if (reg == 4) | |
3583 | { | |
cf61b747 L |
3584 | /* addq/addl -> addq/addl - addressing with %rsp/%r12 |
3585 | is special */ | |
bffbf940 | 3586 | if (val == 0x4c) |
418d4036 L |
3587 | { |
3588 | if (roff < 3) | |
3589 | goto corrupt_input; | |
3590 | bfd_put_8 (output_bfd, 0x49, | |
3591 | contents + roff - 3); | |
3592 | } | |
4a4c5f25 | 3593 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
418d4036 L |
3594 | { |
3595 | if (roff < 3) | |
3596 | goto corrupt_input; | |
3597 | bfd_put_8 (output_bfd, 0x41, | |
3598 | contents + roff - 3); | |
3599 | } | |
bffbf940 | 3600 | bfd_put_8 (output_bfd, 0x81, |
142411ca | 3601 | contents + roff - 2); |
bffbf940 | 3602 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 3603 | contents + roff - 1); |
bffbf940 JJ |
3604 | } |
3605 | else | |
3606 | { | |
cf61b747 | 3607 | /* addq/addl -> leaq/leal */ |
bffbf940 | 3608 | if (val == 0x4c) |
418d4036 L |
3609 | { |
3610 | if (roff < 3) | |
3611 | goto corrupt_input; | |
3612 | bfd_put_8 (output_bfd, 0x4d, | |
3613 | contents + roff - 3); | |
3614 | } | |
4a4c5f25 | 3615 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
418d4036 L |
3616 | { |
3617 | if (roff < 3) | |
3618 | goto corrupt_input; | |
3619 | bfd_put_8 (output_bfd, 0x45, | |
3620 | contents + roff - 3); | |
3621 | } | |
bffbf940 | 3622 | bfd_put_8 (output_bfd, 0x8d, |
142411ca | 3623 | contents + roff - 2); |
bffbf940 | 3624 | bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3), |
142411ca | 3625 | contents + roff - 1); |
bffbf940 | 3626 | } |
eb4ff4d6 | 3627 | bfd_put_32 (output_bfd, |
351f65ca | 3628 | elf_x86_64_tpoff (info, relocation), |
142411ca | 3629 | contents + roff); |
bffbf940 JJ |
3630 | continue; |
3631 | } | |
142411ca L |
3632 | else |
3633 | BFD_ASSERT (FALSE); | |
bffbf940 JJ |
3634 | } |
3635 | ||
6de2ae4a | 3636 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
3637 | abort (); |
3638 | ||
3639 | if (h != NULL) | |
67a4f2b7 AO |
3640 | { |
3641 | off = h->got.offset; | |
0afcef53 | 3642 | offplt = elf_x86_hash_entry (h)->tlsdesc_got; |
67a4f2b7 | 3643 | } |
bffbf940 JJ |
3644 | else |
3645 | { | |
3646 | if (local_got_offsets == NULL) | |
3647 | abort (); | |
3648 | ||
3649 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3650 | offplt = local_tlsdesc_gotents[r_symndx]; |
bffbf940 JJ |
3651 | } |
3652 | ||
3653 | if ((off & 1) != 0) | |
3654 | off &= ~1; | |
26e41594 | 3655 | else |
bffbf940 JJ |
3656 | { |
3657 | Elf_Internal_Rela outrel; | |
bffbf940 | 3658 | int dr_type, indx; |
67a4f2b7 | 3659 | asection *sreloc; |
bffbf940 | 3660 | |
6de2ae4a | 3661 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
3662 | abort (); |
3663 | ||
67a4f2b7 AO |
3664 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
3665 | ||
3666 | if (GOT_TLS_GDESC_P (tls_type)) | |
3667 | { | |
351f65ca | 3668 | outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC); |
67a4f2b7 | 3669 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt |
6de2ae4a L |
3670 | + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size); |
3671 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
3672 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3673 | + offplt |
3674 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 3675 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 3676 | if (indx == 0) |
0afcef53 | 3677 | outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info); |
67a4f2b7 AO |
3678 | else |
3679 | outrel.r_addend = 0; | |
351f65ca | 3680 | elf_append_rela (output_bfd, sreloc, &outrel); |
67a4f2b7 AO |
3681 | } |
3682 | ||
6de2ae4a | 3683 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 3684 | |
6de2ae4a L |
3685 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3686 | + htab->elf.sgot->output_offset + off); | |
bffbf940 | 3687 | |
67a4f2b7 | 3688 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 | 3689 | dr_type = R_X86_64_DTPMOD64; |
67a4f2b7 AO |
3690 | else if (GOT_TLS_GDESC_P (tls_type)) |
3691 | goto dr_done; | |
bffbf940 JJ |
3692 | else |
3693 | dr_type = R_X86_64_TPOFF64; | |
3694 | ||
6de2ae4a | 3695 | bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off); |
bffbf940 | 3696 | outrel.r_addend = 0; |
67a4f2b7 AO |
3697 | if ((dr_type == R_X86_64_TPOFF64 |
3698 | || dr_type == R_X86_64_TLSDESC) && indx == 0) | |
0afcef53 | 3699 | outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info); |
351f65ca | 3700 | outrel.r_info = htab->r_info (indx, dr_type); |
bffbf940 | 3701 | |
351f65ca | 3702 | elf_append_rela (output_bfd, sreloc, &outrel); |
bffbf940 | 3703 | |
67a4f2b7 | 3704 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 JJ |
3705 | { |
3706 | if (indx == 0) | |
3707 | { | |
d40d037c | 3708 | BFD_ASSERT (! unresolved_reloc); |
bffbf940 | 3709 | bfd_put_64 (output_bfd, |
0afcef53 | 3710 | relocation - _bfd_x86_elf_dtpoff_base (info), |
6de2ae4a | 3711 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
bffbf940 JJ |
3712 | } |
3713 | else | |
3714 | { | |
3715 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 3716 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
351f65ca | 3717 | outrel.r_info = htab->r_info (indx, |
bffbf940 JJ |
3718 | R_X86_64_DTPOFF64); |
3719 | outrel.r_offset += GOT_ENTRY_SIZE; | |
351f65ca | 3720 | elf_append_rela (output_bfd, sreloc, |
464d3bd4 | 3721 | &outrel); |
bffbf940 JJ |
3722 | } |
3723 | } | |
3724 | ||
67a4f2b7 | 3725 | dr_done: |
bffbf940 JJ |
3726 | if (h != NULL) |
3727 | h->got.offset |= 1; | |
3728 | else | |
3729 | local_got_offsets[r_symndx] |= 1; | |
3730 | } | |
3731 | ||
67a4f2b7 AO |
3732 | if (off >= (bfd_vma) -2 |
3733 | && ! GOT_TLS_GDESC_P (tls_type)) | |
bffbf940 | 3734 | abort (); |
419414ea | 3735 | if (r_type_tls == r_type) |
bffbf940 | 3736 | { |
67a4f2b7 AO |
3737 | if (r_type == R_X86_64_GOTPC32_TLSDESC |
3738 | || r_type == R_X86_64_TLSDESC_CALL) | |
6de2ae4a L |
3739 | relocation = htab->elf.sgotplt->output_section->vma |
3740 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3741 | + offplt + htab->sgotplt_jump_table_size; |
3742 | else | |
6de2ae4a L |
3743 | relocation = htab->elf.sgot->output_section->vma |
3744 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 3745 | unresolved_reloc = FALSE; |
bffbf940 | 3746 | } |
142411ca | 3747 | else |
67a4f2b7 | 3748 | { |
142411ca | 3749 | bfd_vma roff = rel->r_offset; |
67a4f2b7 | 3750 | |
419414ea | 3751 | if (r_type == R_X86_64_TLSGD) |
142411ca | 3752 | { |
52bc799a | 3753 | /* GD->IE transition. For 64bit, change |
e2cbcd91 L |
3754 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
3755 | .word 0x6666; rex64; call __tls_get_addr@PLT | |
3756 | or | |
3757 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi | |
3758 | .byte 0x66; rex64 | |
3759 | call *__tls_get_addr@GOTPCREL(%rip | |
3760 | which may be converted to | |
3761 | addr32 call __tls_get_addr | |
52bc799a | 3762 | into: |
e2cbcd91 L |
3763 | movq %fs:0, %rax |
3764 | addq foo@gottpoff(%rip), %rax | |
52bc799a | 3765 | For 32bit, change |
e2cbcd91 L |
3766 | leaq foo@tlsgd(%rip), %rdi |
3767 | .word 0x6666; rex64; call __tls_get_addr@PLT | |
3768 | or | |
3769 | leaq foo@tlsgd(%rip), %rdi | |
3770 | .byte 0x66; rex64; | |
3771 | call *__tls_get_addr@GOTPCREL(%rip) | |
3772 | which may be converted to | |
3773 | addr32 call __tls_get_addr | |
52bc799a | 3774 | into: |
e2cbcd91 L |
3775 | movl %fs:0, %eax |
3776 | addq foo@gottpoff(%rip), %rax | |
5c98a14e | 3777 | For largepic, change: |
e2cbcd91 L |
3778 | leaq foo@tlsgd(%rip), %rdi |
3779 | movabsq $__tls_get_addr@pltoff, %rax | |
3780 | addq %r15, %rax | |
3781 | call *%rax | |
5c98a14e | 3782 | into: |
e2cbcd91 L |
3783 | movq %fs:0, %rax |
3784 | addq foo@gottpoff(%rax), %rax | |
3785 | nopw 0x0(%rax,%rax,1) */ | |
5c98a14e | 3786 | int largepic = 0; |
e2cbcd91 | 3787 | if (ABI_64_P (output_bfd)) |
5c98a14e | 3788 | { |
e2cbcd91 L |
3789 | if (contents[roff + 5] == 0xb8) |
3790 | { | |
418d4036 L |
3791 | if (roff < 3 |
3792 | || (roff - 3 + 22) > input_section->size) | |
3793 | goto corrupt_input; | |
e2cbcd91 L |
3794 | memcpy (contents + roff - 3, |
3795 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05" | |
3796 | "\0\0\0\0\x66\x0f\x1f\x44\0", 22); | |
3797 | largepic = 1; | |
3798 | } | |
3799 | else | |
418d4036 L |
3800 | { |
3801 | if (roff < 4 | |
3802 | || (roff - 4 + 16) > input_section->size) | |
3803 | goto corrupt_input; | |
3804 | memcpy (contents + roff - 4, | |
3805 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
3806 | 16); | |
3807 | } | |
5c98a14e | 3808 | } |
52bc799a | 3809 | else |
418d4036 L |
3810 | { |
3811 | if (roff < 3 | |
3812 | || (roff - 3 + 15) > input_section->size) | |
3813 | goto corrupt_input; | |
3814 | memcpy (contents + roff - 3, | |
3815 | "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
3816 | 15); | |
3817 | } | |
142411ca | 3818 | |
6de2ae4a L |
3819 | relocation = (htab->elf.sgot->output_section->vma |
3820 | + htab->elf.sgot->output_offset + off | |
142411ca | 3821 | - roff |
5c98a14e | 3822 | - largepic |
142411ca L |
3823 | - input_section->output_section->vma |
3824 | - input_section->output_offset | |
3825 | - 12); | |
3826 | bfd_put_32 (output_bfd, relocation, | |
5c98a14e JJ |
3827 | contents + roff + 8 + largepic); |
3828 | /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */ | |
142411ca | 3829 | rel++; |
60f2e42e | 3830 | wrel++; |
142411ca L |
3831 | continue; |
3832 | } | |
419414ea | 3833 | else if (r_type == R_X86_64_GOTPC32_TLSDESC) |
142411ca L |
3834 | { |
3835 | /* GDesc -> IE transition. | |
3836 | It's originally something like: | |
14470f07 L |
3837 | leaq x@tlsdesc(%rip), %rax <--- LP64 mode. |
3838 | rex leal x@tlsdesc(%rip), %eax <--- X32 mode. | |
67a4f2b7 | 3839 | |
142411ca | 3840 | Change it to: |
14470f07 L |
3841 | # before xchg %ax,%ax in LP64 mode. |
3842 | movq x@gottpoff(%rip), %rax | |
3843 | # before nopl (%rax) in X32 mode. | |
3844 | rex movl x@gottpoff(%rip), %eax | |
3845 | */ | |
67a4f2b7 | 3846 | |
142411ca | 3847 | /* Now modify the instruction as appropriate. To |
14470f07 | 3848 | turn a lea into a mov in the form we use it, it |
142411ca L |
3849 | suffices to change the second byte from 0x8d to |
3850 | 0x8b. */ | |
418d4036 L |
3851 | if (roff < 2) |
3852 | goto corrupt_input; | |
142411ca L |
3853 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); |
3854 | ||
3855 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
3856 | htab->elf.sgot->output_section->vma |
3857 | + htab->elf.sgot->output_offset + off | |
142411ca L |
3858 | - rel->r_offset |
3859 | - input_section->output_section->vma | |
3860 | - input_section->output_offset | |
3861 | - 4, | |
3862 | contents + roff); | |
3863 | continue; | |
3864 | } | |
419414ea | 3865 | else if (r_type == R_X86_64_TLSDESC_CALL) |
142411ca L |
3866 | { |
3867 | /* GDesc -> IE transition. | |
3868 | It's originally: | |
14470f07 L |
3869 | call *(%rax) <--- LP64 mode. |
3870 | call *(%eax) <--- X32 mode. | |
142411ca L |
3871 | |
3872 | Change it to: | |
14470f07 L |
3873 | xchg %ax, %ax <-- LP64 mode. |
3874 | nopl (%rax) <-- X32 mode. | |
3875 | */ | |
142411ca | 3876 | |
14470f07 L |
3877 | unsigned int prefix = 0; |
3878 | if (!ABI_64_P (input_bfd)) | |
3879 | { | |
3880 | /* Check for call *x@tlsdesc(%eax). */ | |
3881 | if (contents[roff] == 0x67) | |
3882 | prefix = 1; | |
3883 | } | |
3884 | if (prefix) | |
3885 | { | |
3886 | bfd_put_8 (output_bfd, 0x0f, contents + roff); | |
3887 | bfd_put_8 (output_bfd, 0x1f, contents + roff + 1); | |
3888 | bfd_put_8 (output_bfd, 0x00, contents + roff + 2); | |
3889 | } | |
3890 | else | |
3891 | { | |
3892 | bfd_put_8 (output_bfd, 0x66, contents + roff); | |
3893 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); | |
3894 | } | |
142411ca L |
3895 | continue; |
3896 | } | |
3897 | else | |
3898 | BFD_ASSERT (FALSE); | |
67a4f2b7 | 3899 | } |
bffbf940 JJ |
3900 | break; |
3901 | ||
3902 | case R_X86_64_TLSLD: | |
351f65ca L |
3903 | if (! elf_x86_64_tls_transition (info, input_bfd, |
3904 | input_section, contents, | |
3905 | symtab_hdr, sym_hashes, | |
bedfd056 L |
3906 | &r_type, GOT_UNKNOWN, rel, |
3907 | relend, h, r_symndx, TRUE)) | |
142411ca | 3908 | return FALSE; |
a3fadc9a | 3909 | |
142411ca L |
3910 | if (r_type != R_X86_64_TLSLD) |
3911 | { | |
bffbf940 | 3912 | /* LD->LE transition: |
e2cbcd91 L |
3913 | leaq foo@tlsld(%rip), %rdi |
3914 | call __tls_get_addr@PLT | |
3915 | For 64bit, we change it into: | |
3916 | .word 0x6666; .byte 0x66; movq %fs:0, %rax | |
3917 | For 32bit, we change it into: | |
3918 | nopl 0x0(%rax); movl %fs:0, %eax | |
3919 | Or | |
3920 | leaq foo@tlsld(%rip), %rdi; | |
3921 | call *__tls_get_addr@GOTPCREL(%rip) | |
3922 | which may be converted to | |
3923 | addr32 call __tls_get_addr | |
52bc799a | 3924 | For 64bit, we change it into: |
e2cbcd91 | 3925 | .word 0x6666; .word 0x6666; movq %fs:0, %rax |
52bc799a | 3926 | For 32bit, we change it into: |
e2cbcd91 | 3927 | nopw 0x0(%rax); movl %fs:0, %eax |
5c98a14e | 3928 | For largepic, change: |
e2cbcd91 L |
3929 | leaq foo@tlsgd(%rip), %rdi |
3930 | movabsq $__tls_get_addr@pltoff, %rax | |
3931 | addq %rbx, %rax | |
3932 | call *%rax | |
3933 | into | |
3934 | data16 data16 data16 nopw %cs:0x0(%rax,%rax,1) | |
3935 | movq %fs:0, %eax */ | |
142411ca L |
3936 | |
3937 | BFD_ASSERT (r_type == R_X86_64_TPOFF32); | |
e2cbcd91 L |
3938 | if (ABI_64_P (output_bfd)) |
3939 | { | |
418d4036 L |
3940 | if ((rel->r_offset + 5) >= input_section->size) |
3941 | goto corrupt_input; | |
e2cbcd91 | 3942 | if (contents[rel->r_offset + 5] == 0xb8) |
418d4036 L |
3943 | { |
3944 | if (rel->r_offset < 3 | |
3945 | || (rel->r_offset - 3 + 22) > input_section->size) | |
3946 | goto corrupt_input; | |
3947 | memcpy (contents + rel->r_offset - 3, | |
3948 | "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0" | |
3949 | "\x64\x48\x8b\x04\x25\0\0\0", 22); | |
3950 | } | |
e2cbcd91 L |
3951 | else if (contents[rel->r_offset + 4] == 0xff |
3952 | || contents[rel->r_offset + 4] == 0x67) | |
418d4036 L |
3953 | { |
3954 | if (rel->r_offset < 3 | |
3955 | || (rel->r_offset - 3 + 13) > input_section->size) | |
3956 | goto corrupt_input; | |
3957 | memcpy (contents + rel->r_offset - 3, | |
3958 | "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", | |
3959 | 13); | |
3960 | ||
3961 | } | |
e2cbcd91 | 3962 | else |
418d4036 L |
3963 | { |
3964 | if (rel->r_offset < 3 | |
3965 | || (rel->r_offset - 3 + 12) > input_section->size) | |
3966 | goto corrupt_input; | |
3967 | memcpy (contents + rel->r_offset - 3, | |
3968 | "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12); | |
3969 | } | |
e2cbcd91 | 3970 | } |
52bc799a | 3971 | else |
e2cbcd91 | 3972 | { |
418d4036 L |
3973 | if ((rel->r_offset + 4) >= input_section->size) |
3974 | goto corrupt_input; | |
e2cbcd91 | 3975 | if (contents[rel->r_offset + 4] == 0xff) |
418d4036 L |
3976 | { |
3977 | if (rel->r_offset < 3 | |
3978 | || (rel->r_offset - 3 + 13) > input_section->size) | |
3979 | goto corrupt_input; | |
3980 | memcpy (contents + rel->r_offset - 3, | |
3981 | "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", | |
3982 | 13); | |
3983 | } | |
e2cbcd91 | 3984 | else |
418d4036 L |
3985 | { |
3986 | if (rel->r_offset < 3 | |
3987 | || (rel->r_offset - 3 + 12) > input_section->size) | |
3988 | goto corrupt_input; | |
3989 | memcpy (contents + rel->r_offset - 3, | |
3990 | "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12); | |
3991 | } | |
e2cbcd91 L |
3992 | } |
3993 | /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX | |
3994 | and R_X86_64_PLTOFF64. */ | |
bffbf940 | 3995 | rel++; |
60f2e42e | 3996 | wrel++; |
bffbf940 JJ |
3997 | continue; |
3998 | } | |
3999 | ||
6de2ae4a | 4000 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
4001 | abort (); |
4002 | ||
0afcef53 | 4003 | off = htab->tls_ld_or_ldm_got.offset; |
bffbf940 JJ |
4004 | if (off & 1) |
4005 | off &= ~1; | |
4006 | else | |
4007 | { | |
4008 | Elf_Internal_Rela outrel; | |
bffbf940 | 4009 | |
6de2ae4a | 4010 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
4011 | abort (); |
4012 | ||
6de2ae4a L |
4013 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
4014 | + htab->elf.sgot->output_offset + off); | |
bffbf940 JJ |
4015 | |
4016 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 4017 | htab->elf.sgot->contents + off); |
bffbf940 | 4018 | bfd_put_64 (output_bfd, 0, |
6de2ae4a | 4019 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
351f65ca | 4020 | outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64); |
bffbf940 | 4021 | outrel.r_addend = 0; |
351f65ca | 4022 | elf_append_rela (output_bfd, htab->elf.srelgot, |
464d3bd4 | 4023 | &outrel); |
0afcef53 | 4024 | htab->tls_ld_or_ldm_got.offset |= 1; |
bffbf940 | 4025 | } |
6de2ae4a L |
4026 | relocation = htab->elf.sgot->output_section->vma |
4027 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 4028 | unresolved_reloc = FALSE; |
bffbf940 JJ |
4029 | break; |
4030 | ||
4031 | case R_X86_64_DTPOFF32: | |
0e1862bb L |
4032 | if (!bfd_link_executable (info) |
4033 | || (input_section->flags & SEC_CODE) == 0) | |
0afcef53 | 4034 | relocation -= _bfd_x86_elf_dtpoff_base (info); |
bffbf940 | 4035 | else |
351f65ca | 4036 | relocation = elf_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
4037 | break; |
4038 | ||
4039 | case R_X86_64_TPOFF32: | |
6769d501 | 4040 | case R_X86_64_TPOFF64: |
0e1862bb | 4041 | BFD_ASSERT (bfd_link_executable (info)); |
351f65ca | 4042 | relocation = elf_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
4043 | break; |
4044 | ||
a69ed7f7 L |
4045 | case R_X86_64_DTPOFF64: |
4046 | BFD_ASSERT ((input_section->flags & SEC_CODE) == 0); | |
0afcef53 | 4047 | relocation -= _bfd_x86_elf_dtpoff_base (info); |
a69ed7f7 L |
4048 | break; |
4049 | ||
70256ad8 AJ |
4050 | default: |
4051 | break; | |
4052 | } | |
8d88c4ca | 4053 | |
239e1f3a AM |
4054 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
4055 | because such sections are not SEC_ALLOC and thus ld.so will | |
4056 | not process them. */ | |
c434dee6 | 4057 | if (unresolved_reloc |
239e1f3a | 4058 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
4059 | && h->def_dynamic) |
4060 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
4061 | rel->r_offset) != (bfd_vma) -1) | |
a040981f | 4062 | { |
7073b5b9 L |
4063 | switch (r_type) |
4064 | { | |
4065 | case R_X86_64_32S: | |
a5b4ee94 L |
4066 | sec = h->root.u.def.section; |
4067 | if ((info->nocopyreloc | |
4068 | || (eh->def_protected | |
4069 | && elf_has_no_copy_on_protected (h->root.u.def.section->owner))) | |
7073b5b9 L |
4070 | && !(h->root.u.def.section->flags & SEC_CODE)) |
4071 | return elf_x86_64_need_pic (info, input_bfd, input_section, | |
4072 | h, NULL, NULL, howto); | |
4073 | /* Fall through. */ | |
4074 | ||
4075 | default: | |
4076 | _bfd_error_handler | |
4077 | /* xgettext:c-format */ | |
2dcf00ce AM |
4078 | (_("%pB(%pA+%#" PRIx64 "): " |
4079 | "unresolvable %s relocation against symbol `%s'"), | |
7073b5b9 L |
4080 | input_bfd, |
4081 | input_section, | |
2dcf00ce | 4082 | (uint64_t) rel->r_offset, |
7073b5b9 L |
4083 | howto->name, |
4084 | h->root.root.string); | |
4085 | return FALSE; | |
4086 | } | |
a040981f | 4087 | } |
c434dee6 | 4088 | |
dc1e8a47 | 4089 | do_relocation: |
8d88c4ca | 4090 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
c434dee6 AJ |
4091 | contents, rel->r_offset, |
4092 | relocation, rel->r_addend); | |
8d88c4ca | 4093 | |
dc1e8a47 | 4094 | check_relocation_error: |
8d88c4ca | 4095 | if (r != bfd_reloc_ok) |
8da6118f | 4096 | { |
c434dee6 AJ |
4097 | const char *name; |
4098 | ||
4099 | if (h != NULL) | |
4100 | name = h->root.root.string; | |
4101 | else | |
8da6118f | 4102 | { |
c434dee6 AJ |
4103 | name = bfd_elf_string_from_elf_section (input_bfd, |
4104 | symtab_hdr->sh_link, | |
4105 | sym->st_name); | |
4106 | if (name == NULL) | |
b34976b6 | 4107 | return FALSE; |
c434dee6 | 4108 | if (*name == '\0') |
fd361982 | 4109 | name = bfd_section_name (sec); |
c434dee6 AJ |
4110 | } |
4111 | ||
4112 | if (r == bfd_reloc_overflow) | |
8b43e456 | 4113 | { |
78984959 | 4114 | if (converted_reloc) |
8b43e456 L |
4115 | { |
4116 | info->callbacks->einfo | |
4117 | (_("%F%P: failed to convert GOTPCREL relocation; relink with --no-relax\n")); | |
4118 | return FALSE; | |
4119 | } | |
4120 | (*info->callbacks->reloc_overflow) | |
4121 | (info, (h ? &h->root : NULL), name, howto->name, | |
4122 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
4123 | } | |
c434dee6 AJ |
4124 | else |
4125 | { | |
4eca0228 | 4126 | _bfd_error_handler |
695344c0 | 4127 | /* xgettext:c-format */ |
2dcf00ce | 4128 | (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"), |
d003868e | 4129 | input_bfd, input_section, |
2dcf00ce | 4130 | (uint64_t) rel->r_offset, name, (int) r); |
b34976b6 | 4131 | return FALSE; |
8da6118f KH |
4132 | } |
4133 | } | |
60f2e42e L |
4134 | |
4135 | if (wrel != rel) | |
4136 | *wrel = *rel; | |
4137 | } | |
4138 | ||
4139 | if (wrel != rel) | |
4140 | { | |
4141 | Elf_Internal_Shdr *rel_hdr; | |
4142 | size_t deleted = rel - wrel; | |
4143 | ||
4144 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
4145 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
4146 | if (rel_hdr->sh_size == 0) | |
4147 | { | |
4148 | /* It is too late to remove an empty reloc section. Leave | |
4149 | one NONE reloc. | |
4150 | ??? What is wrong with an empty section??? */ | |
4151 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
4152 | deleted -= 1; | |
4153 | } | |
4154 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
4155 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
4156 | input_section->reloc_count -= deleted; | |
8d88c4ca | 4157 | } |
70256ad8 | 4158 | |
b34976b6 | 4159 | return TRUE; |
70256ad8 AJ |
4160 | } |
4161 | ||
4162 | /* Finish up dynamic symbol handling. We set the contents of various | |
4163 | dynamic sections here. */ | |
4164 | ||
b34976b6 | 4165 | static bfd_boolean |
351f65ca L |
4166 | elf_x86_64_finish_dynamic_symbol (bfd *output_bfd, |
4167 | struct bfd_link_info *info, | |
4168 | struct elf_link_hash_entry *h, | |
aec6b87e | 4169 | Elf_Internal_Sym *sym) |
70256ad8 | 4170 | { |
0afcef53 | 4171 | struct elf_x86_link_hash_table *htab; |
f2c29a16 | 4172 | bfd_boolean use_plt_second; |
0afcef53 | 4173 | struct elf_x86_link_hash_entry *eh; |
aec6b87e | 4174 | bfd_boolean local_undefweak; |
70256ad8 | 4175 | |
0afcef53 | 4176 | htab = elf_x86_hash_table (info, X86_64_ELF_DATA); |
4dfe6ac6 NC |
4177 | if (htab == NULL) |
4178 | return FALSE; | |
70256ad8 | 4179 | |
f2c29a16 L |
4180 | /* Use the second PLT section only if there is .plt section. */ |
4181 | use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL; | |
0ff2b86e | 4182 | |
0afcef53 | 4183 | eh = (struct elf_x86_link_hash_entry *) h; |
9e9821dd L |
4184 | if (eh->no_finish_dynamic_symbol) |
4185 | abort (); | |
dd7e64d4 | 4186 | |
aec6b87e L |
4187 | /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for |
4188 | resolved undefined weak symbols in executable so that their | |
4189 | references have value 0 at run-time. */ | |
c5bce5c6 | 4190 | local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh); |
aec6b87e | 4191 | |
70256ad8 AJ |
4192 | if (h->plt.offset != (bfd_vma) -1) |
4193 | { | |
70256ad8 | 4194 | bfd_vma plt_index; |
38b12349 | 4195 | bfd_vma got_offset, plt_offset; |
70256ad8 | 4196 | Elf_Internal_Rela rela; |
947216bf | 4197 | bfd_byte *loc; |
0ff2b86e | 4198 | asection *plt, *gotplt, *relplt, *resolved_plt; |
351f65ca | 4199 | const struct elf_backend_data *bed; |
5974eba6 | 4200 | bfd_vma plt_got_pcrel_offset; |
cbe950e9 L |
4201 | |
4202 | /* When building a static executable, use .iplt, .igot.plt and | |
4203 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 4204 | if (htab->elf.splt != NULL) |
cbe950e9 | 4205 | { |
6de2ae4a L |
4206 | plt = htab->elf.splt; |
4207 | gotplt = htab->elf.sgotplt; | |
4208 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
4209 | } |
4210 | else | |
4211 | { | |
6de2ae4a L |
4212 | plt = htab->elf.iplt; |
4213 | gotplt = htab->elf.igotplt; | |
4214 | relplt = htab->elf.irelplt; | |
cbe950e9 | 4215 | } |
70256ad8 | 4216 | |
f3180fa9 | 4217 | VERIFY_PLT_ENTRY (info, h, plt, gotplt, relplt, local_undefweak) |
70256ad8 AJ |
4218 | |
4219 | /* Get the index in the procedure linkage table which | |
4220 | corresponds to this symbol. This is the index of this symbol | |
4221 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 4222 | first entry in the procedure linkage table is reserved. |
6bbec505 | 4223 | |
cbe950e9 | 4224 | Get the offset into the .got table of the entry that |
407443a3 | 4225 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE |
cbe950e9 L |
4226 | bytes. The first three are reserved for the dynamic linker. |
4227 | ||
4228 | For static executables, we don't reserve anything. */ | |
4229 | ||
6de2ae4a | 4230 | if (plt == htab->elf.splt) |
cbe950e9 | 4231 | { |
765e526c L |
4232 | got_offset = (h->plt.offset / htab->plt.plt_entry_size |
4233 | - htab->plt.has_plt0); | |
e1f98742 | 4234 | got_offset = (got_offset + 3) * GOT_ENTRY_SIZE; |
cbe950e9 L |
4235 | } |
4236 | else | |
4237 | { | |
765e526c | 4238 | got_offset = h->plt.offset / htab->plt.plt_entry_size; |
e1f98742 | 4239 | got_offset = got_offset * GOT_ENTRY_SIZE; |
cbe950e9 | 4240 | } |
70256ad8 | 4241 | |
38b12349 | 4242 | /* Fill in the entry in the procedure linkage table. */ |
765e526c L |
4243 | memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry, |
4244 | htab->plt.plt_entry_size); | |
f2c29a16 | 4245 | if (use_plt_second) |
0ff2b86e | 4246 | { |
f2c29a16 | 4247 | memcpy (htab->plt_second->contents + eh->plt_second.offset, |
765e526c L |
4248 | htab->non_lazy_plt->plt_entry, |
4249 | htab->non_lazy_plt->plt_entry_size); | |
0ff2b86e | 4250 | |
f2c29a16 L |
4251 | resolved_plt = htab->plt_second; |
4252 | plt_offset = eh->plt_second.offset; | |
0ff2b86e L |
4253 | } |
4254 | else | |
4255 | { | |
0ff2b86e L |
4256 | resolved_plt = plt; |
4257 | plt_offset = h->plt.offset; | |
4258 | } | |
eed180f8 RM |
4259 | |
4260 | /* Insert the relocation positions of the plt section. */ | |
4261 | ||
4262 | /* Put offset the PC-relative instruction referring to the GOT entry, | |
4263 | subtracting the size of that instruction. */ | |
ab7fede8 L |
4264 | plt_got_pcrel_offset = (gotplt->output_section->vma |
4265 | + gotplt->output_offset | |
4266 | + got_offset | |
4267 | - resolved_plt->output_section->vma | |
4268 | - resolved_plt->output_offset | |
4269 | - plt_offset | |
765e526c | 4270 | - htab->plt.plt_got_insn_size); |
ab7fede8 L |
4271 | |
4272 | /* Check PC-relative offset overflow in PLT entry. */ | |
5974eba6 | 4273 | if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff) |
695344c0 | 4274 | /* xgettext:c-format */ |
871b3ab2 | 4275 | info->callbacks->einfo (_("%F%pB: PC-relative offset overflow in PLT entry for `%s'\n"), |
ab7fede8 L |
4276 | output_bfd, h->root.root.string); |
4277 | ||
4278 | bfd_put_32 (output_bfd, plt_got_pcrel_offset, | |
38b12349 | 4279 | (resolved_plt->contents + plt_offset |
765e526c | 4280 | + htab->plt.plt_got_offset)); |
cbe950e9 | 4281 | |
653165cc | 4282 | /* Fill in the entry in the global offset table, initially this |
aec6b87e L |
4283 | points to the second part of the PLT entry. Leave the entry |
4284 | as zero for undefined weak symbol in PIE. No PLT relocation | |
4285 | against undefined weak symbol in PIE. */ | |
4286 | if (!local_undefweak) | |
cbe950e9 | 4287 | { |
765e526c | 4288 | if (htab->plt.has_plt0) |
38b12349 L |
4289 | bfd_put_64 (output_bfd, (plt->output_section->vma |
4290 | + plt->output_offset | |
4291 | + h->plt.offset | |
765e526c | 4292 | + htab->lazy_plt->plt_lazy_offset), |
38b12349 | 4293 | gotplt->contents + got_offset); |
aec6b87e L |
4294 | |
4295 | /* Fill in the entry in the .rela.plt section. */ | |
4296 | rela.r_offset = (gotplt->output_section->vma | |
4297 | + gotplt->output_offset | |
4298 | + got_offset); | |
cf1070f1 | 4299 | if (PLT_LOCAL_IFUNC_P (info, h)) |
aec6b87e | 4300 | { |
871b3ab2 | 4301 | info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"), |
6322e5c5 L |
4302 | h->root.root.string, |
4303 | h->root.u.def.section->owner); | |
4304 | ||
aec6b87e L |
4305 | /* If an STT_GNU_IFUNC symbol is locally defined, generate |
4306 | R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */ | |
4307 | rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE); | |
4308 | rela.r_addend = (h->root.u.def.value | |
4309 | + h->root.u.def.section->output_section->vma | |
4310 | + h->root.u.def.section->output_offset); | |
4311 | /* R_X86_64_IRELATIVE comes last. */ | |
4312 | plt_index = htab->next_irelative_index--; | |
4313 | } | |
4314 | else | |
4315 | { | |
4316 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT); | |
4317 | rela.r_addend = 0; | |
4318 | plt_index = htab->next_jump_slot_index++; | |
4319 | } | |
e1f98742 | 4320 | |
38b12349 L |
4321 | /* Don't fill the second and third slots in PLT entry for |
4322 | static executables nor without PLT0. */ | |
765e526c | 4323 | if (plt == htab->elf.splt && htab->plt.has_plt0) |
aec6b87e | 4324 | { |
38b12349 | 4325 | bfd_vma plt0_offset |
765e526c | 4326 | = h->plt.offset + htab->lazy_plt->plt_plt_insn_end; |
aec6b87e L |
4327 | |
4328 | /* Put relocation index. */ | |
4329 | bfd_put_32 (output_bfd, plt_index, | |
4330 | (plt->contents + h->plt.offset | |
765e526c | 4331 | + htab->lazy_plt->plt_reloc_offset)); |
aec6b87e L |
4332 | |
4333 | /* Put offset for jmp .PLT0 and check for overflow. We don't | |
4334 | check relocation index for overflow since branch displacement | |
4335 | will overflow first. */ | |
4336 | if (plt0_offset > 0x80000000) | |
695344c0 | 4337 | /* xgettext:c-format */ |
871b3ab2 | 4338 | info->callbacks->einfo (_("%F%pB: branch displacement overflow in PLT entry for `%s'\n"), |
aec6b87e L |
4339 | output_bfd, h->root.root.string); |
4340 | bfd_put_32 (output_bfd, - plt0_offset, | |
38b12349 | 4341 | (plt->contents + h->plt.offset |
765e526c | 4342 | + htab->lazy_plt->plt_plt_offset)); |
aec6b87e | 4343 | } |
351f65ca | 4344 | |
aec6b87e L |
4345 | bed = get_elf_backend_data (output_bfd); |
4346 | loc = relplt->contents + plt_index * bed->s->sizeof_rela; | |
4347 | bed->s->swap_reloca_out (output_bfd, &rela, loc); | |
4348 | } | |
dd7e64d4 L |
4349 | } |
4350 | else if (eh->plt_got.offset != (bfd_vma) -1) | |
4351 | { | |
38b12349 | 4352 | bfd_vma got_offset, plt_offset; |
dd7e64d4 L |
4353 | asection *plt, *got; |
4354 | bfd_boolean got_after_plt; | |
4355 | int32_t got_pcrel_offset; | |
dd7e64d4 L |
4356 | |
4357 | /* Set the entry in the GOT procedure linkage table. */ | |
4358 | plt = htab->plt_got; | |
4359 | got = htab->elf.sgot; | |
4360 | got_offset = h->got.offset; | |
4361 | ||
4362 | if (got_offset == (bfd_vma) -1 | |
e492d2f8 | 4363 | || (h->type == STT_GNU_IFUNC && h->def_regular) |
dd7e64d4 L |
4364 | || plt == NULL |
4365 | || got == NULL) | |
4366 | abort (); | |
70256ad8 | 4367 | |
38b12349 | 4368 | /* Use the non-lazy PLT entry template for the GOT PLT since they |
dd7e64d4 | 4369 | are the identical. */ |
dd7e64d4 L |
4370 | /* Fill in the entry in the GOT procedure linkage table. */ |
4371 | plt_offset = eh->plt_got.offset; | |
4372 | memcpy (plt->contents + plt_offset, | |
765e526c L |
4373 | htab->non_lazy_plt->plt_entry, |
4374 | htab->non_lazy_plt->plt_entry_size); | |
dd7e64d4 L |
4375 | |
4376 | /* Put offset the PC-relative instruction referring to the GOT | |
4377 | entry, subtracting the size of that instruction. */ | |
4378 | got_pcrel_offset = (got->output_section->vma | |
4379 | + got->output_offset | |
4380 | + got_offset | |
4381 | - plt->output_section->vma | |
4382 | - plt->output_offset | |
4383 | - plt_offset | |
765e526c | 4384 | - htab->non_lazy_plt->plt_got_insn_size); |
dd7e64d4 L |
4385 | |
4386 | /* Check PC-relative offset overflow in GOT PLT entry. */ | |
4387 | got_after_plt = got->output_section->vma > plt->output_section->vma; | |
4388 | if ((got_after_plt && got_pcrel_offset < 0) | |
4389 | || (!got_after_plt && got_pcrel_offset > 0)) | |
695344c0 | 4390 | /* xgettext:c-format */ |
871b3ab2 | 4391 | info->callbacks->einfo (_("%F%pB: PC-relative offset overflow in GOT PLT entry for `%s'\n"), |
dd7e64d4 L |
4392 | output_bfd, h->root.root.string); |
4393 | ||
4394 | bfd_put_32 (output_bfd, got_pcrel_offset, | |
38b12349 | 4395 | (plt->contents + plt_offset |
765e526c | 4396 | + htab->non_lazy_plt->plt_got_offset)); |
dd7e64d4 L |
4397 | } |
4398 | ||
aec6b87e L |
4399 | if (!local_undefweak |
4400 | && !h->def_regular | |
dd7e64d4 L |
4401 | && (h->plt.offset != (bfd_vma) -1 |
4402 | || eh->plt_got.offset != (bfd_vma) -1)) | |
4403 | { | |
4404 | /* Mark the symbol as undefined, rather than as defined in | |
4405 | the .plt section. Leave the value if there were any | |
4406 | relocations where pointer equality matters (this is a clue | |
4407 | for the dynamic linker, to make function pointer | |
4408 | comparisons work between an application and shared | |
4409 | library), otherwise set it to zero. If a function is only | |
4410 | called from a binary, there is no need to slow down | |
4411 | shared libraries because of that. */ | |
4412 | sym->st_shndx = SHN_UNDEF; | |
4413 | if (!h->pointer_equality_needed) | |
4414 | sym->st_value = 0; | |
70256ad8 AJ |
4415 | } |
4416 | ||
4ec09950 L |
4417 | _bfd_x86_elf_link_fixup_ifunc_symbol (info, htab, h, sym); |
4418 | ||
aec6b87e L |
4419 | /* Don't generate dynamic GOT relocation against undefined weak |
4420 | symbol in executable. */ | |
bffbf940 | 4421 | if (h->got.offset != (bfd_vma) -1 |
0afcef53 L |
4422 | && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry (h)->tls_type) |
4423 | && elf_x86_hash_entry (h)->tls_type != GOT_TLS_IE | |
aec6b87e | 4424 | && !local_undefweak) |
053579d7 | 4425 | { |
053579d7 | 4426 | Elf_Internal_Rela rela; |
233cc9c1 | 4427 | asection *relgot = htab->elf.srelgot; |
053579d7 AJ |
4428 | |
4429 | /* This symbol has an entry in the global offset table. Set it | |
bffbf940 | 4430 | up. */ |
6de2ae4a | 4431 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
c434dee6 | 4432 | abort (); |
053579d7 | 4433 | |
6de2ae4a L |
4434 | rela.r_offset = (htab->elf.sgot->output_section->vma |
4435 | + htab->elf.sgot->output_offset | |
dc810e39 | 4436 | + (h->got.offset &~ (bfd_vma) 1)); |
053579d7 AJ |
4437 | |
4438 | /* If this is a static link, or it is a -Bsymbolic link and the | |
4439 | symbol is defined locally or was forced to be local because | |
4440 | of a version file, we just want to emit a RELATIVE reloc. | |
4441 | The entry in the global offset table will already have been | |
4442 | initialized in the relocate_section function. */ | |
710ab287 | 4443 | if (h->def_regular |
0018b0a3 L |
4444 | && h->type == STT_GNU_IFUNC) |
4445 | { | |
233cc9c1 L |
4446 | if (h->plt.offset == (bfd_vma) -1) |
4447 | { | |
4448 | /* STT_GNU_IFUNC is referenced without PLT. */ | |
4449 | if (htab->elf.splt == NULL) | |
4450 | { | |
4451 | /* use .rel[a].iplt section to store .got relocations | |
4452 | in static executable. */ | |
4453 | relgot = htab->elf.irelplt; | |
4454 | } | |
6999821f | 4455 | if (SYMBOL_REFERENCES_LOCAL_P (info, h)) |
233cc9c1 | 4456 | { |
871b3ab2 | 4457 | info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"), |
6322e5c5 L |
4458 | h->root.root.string, |
4459 | h->root.u.def.section->owner); | |
4460 | ||
233cc9c1 L |
4461 | rela.r_info = htab->r_info (0, |
4462 | R_X86_64_IRELATIVE); | |
4463 | rela.r_addend = (h->root.u.def.value | |
4464 | + h->root.u.def.section->output_section->vma | |
4465 | + h->root.u.def.section->output_offset); | |
4466 | } | |
4467 | else | |
4468 | goto do_glob_dat; | |
4469 | } | |
4470 | else if (bfd_link_pic (info)) | |
710ab287 L |
4471 | { |
4472 | /* Generate R_X86_64_GLOB_DAT. */ | |
4473 | goto do_glob_dat; | |
4474 | } | |
4475 | else | |
4476 | { | |
90d60710 | 4477 | asection *plt; |
aab82f4c | 4478 | bfd_vma plt_offset; |
90d60710 | 4479 | |
710ab287 L |
4480 | if (!h->pointer_equality_needed) |
4481 | abort (); | |
4482 | ||
4483 | /* For non-shared object, we can't use .got.plt, which | |
4484 | contains the real function addres if we need pointer | |
4485 | equality. We load the GOT entry with the PLT entry. */ | |
f2c29a16 | 4486 | if (htab->plt_second != NULL) |
aab82f4c | 4487 | { |
f2c29a16 L |
4488 | plt = htab->plt_second; |
4489 | plt_offset = eh->plt_second.offset; | |
aab82f4c L |
4490 | } |
4491 | else | |
4492 | { | |
4493 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; | |
4494 | plt_offset = h->plt.offset; | |
4495 | } | |
710ab287 L |
4496 | bfd_put_64 (output_bfd, (plt->output_section->vma |
4497 | + plt->output_offset | |
aab82f4c | 4498 | + plt_offset), |
6de2ae4a | 4499 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
4500 | return TRUE; |
4501 | } | |
0018b0a3 | 4502 | } |
0e1862bb | 4503 | else if (bfd_link_pic (info) |
6999821f | 4504 | && SYMBOL_REFERENCES_LOCAL_P (info, h)) |
053579d7 | 4505 | { |
83924b38 | 4506 | if (!SYMBOL_DEFINED_NON_SHARED_P (h)) |
41bed6dd | 4507 | return FALSE; |
cc78d0af | 4508 | BFD_ASSERT((h->got.offset & 1) != 0); |
351f65ca | 4509 | rela.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
053579d7 AJ |
4510 | rela.r_addend = (h->root.u.def.value |
4511 | + h->root.u.def.section->output_section->vma | |
4512 | + h->root.u.def.section->output_offset); | |
4513 | } | |
4514 | else | |
4515 | { | |
4516 | BFD_ASSERT((h->got.offset & 1) == 0); | |
dc1e8a47 | 4517 | do_glob_dat: |
c434dee6 | 4518 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 4519 | htab->elf.sgot->contents + h->got.offset); |
351f65ca | 4520 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT); |
053579d7 AJ |
4521 | rela.r_addend = 0; |
4522 | } | |
4523 | ||
233cc9c1 | 4524 | elf_append_rela (output_bfd, relgot, &rela); |
053579d7 AJ |
4525 | } |
4526 | ||
f5385ebf | 4527 | if (h->needs_copy) |
70256ad8 | 4528 | { |
70256ad8 | 4529 | Elf_Internal_Rela rela; |
5474d94f | 4530 | asection *s; |
70256ad8 AJ |
4531 | |
4532 | /* This symbol needs a copy reloc. Set it up. */ | |
ff38b4cc | 4533 | VERIFY_COPY_RELOC (h, htab) |
70256ad8 AJ |
4534 | |
4535 | rela.r_offset = (h->root.u.def.value | |
4536 | + h->root.u.def.section->output_section->vma | |
4537 | + h->root.u.def.section->output_offset); | |
351f65ca | 4538 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY); |
70256ad8 | 4539 | rela.r_addend = 0; |
afbf7e8e | 4540 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
4541 | s = htab->elf.sreldynrelro; |
4542 | else | |
4543 | s = htab->elf.srelbss; | |
4544 | elf_append_rela (output_bfd, s, &rela); | |
70256ad8 AJ |
4545 | } |
4546 | ||
b34976b6 | 4547 | return TRUE; |
70256ad8 AJ |
4548 | } |
4549 | ||
c25bc9fc L |
4550 | /* Finish up local dynamic symbol handling. We set the contents of |
4551 | various dynamic sections here. */ | |
4552 | ||
4553 | static bfd_boolean | |
351f65ca | 4554 | elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf) |
c25bc9fc L |
4555 | { |
4556 | struct elf_link_hash_entry *h | |
4557 | = (struct elf_link_hash_entry *) *slot; | |
4558 | struct bfd_link_info *info | |
eed180f8 | 4559 | = (struct bfd_link_info *) inf; |
c25bc9fc | 4560 | |
351f65ca | 4561 | return elf_x86_64_finish_dynamic_symbol (info->output_bfd, |
5f0f0847 | 4562 | info, h, NULL); |
c25bc9fc L |
4563 | } |
4564 | ||
aec6b87e L |
4565 | /* Finish up undefined weak symbol handling in PIE. Fill its PLT entry |
4566 | here since undefined weak symbol may not be dynamic and may not be | |
4567 | called for elf_x86_64_finish_dynamic_symbol. */ | |
4568 | ||
4569 | static bfd_boolean | |
4570 | elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh, | |
4571 | void *inf) | |
4572 | { | |
4573 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh; | |
4574 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
4575 | ||
4576 | if (h->root.type != bfd_link_hash_undefweak | |
4577 | || h->dynindx != -1) | |
4578 | return TRUE; | |
4579 | ||
4580 | return elf_x86_64_finish_dynamic_symbol (info->output_bfd, | |
5f0f0847 | 4581 | info, h, NULL); |
aec6b87e L |
4582 | } |
4583 | ||
c434dee6 AJ |
4584 | /* Used to decide how to sort relocs in an optimal manner for the |
4585 | dynamic linker, before writing them out. */ | |
4586 | ||
4587 | static enum elf_reloc_type_class | |
cae1fbbb | 4588 | elf_x86_64_reloc_type_class (const struct bfd_link_info *info, |
7e612e98 AM |
4589 | const asection *rel_sec ATTRIBUTE_UNUSED, |
4590 | const Elf_Internal_Rela *rela) | |
c434dee6 | 4591 | { |
cae1fbbb L |
4592 | bfd *abfd = info->output_bfd; |
4593 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
0afcef53 L |
4594 | struct elf_x86_link_hash_table *htab |
4595 | = elf_x86_hash_table (info, X86_64_ELF_DATA); | |
cae1fbbb | 4596 | |
d9e3b590 L |
4597 | if (htab->elf.dynsym != NULL |
4598 | && htab->elf.dynsym->contents != NULL) | |
4599 | { | |
4600 | /* Check relocation against STT_GNU_IFUNC symbol if there are | |
07d6d2b8 | 4601 | dynamic symbols. */ |
d9e3b590 | 4602 | unsigned long r_symndx = htab->r_sym (rela->r_info); |
897463b1 L |
4603 | if (r_symndx != STN_UNDEF) |
4604 | { | |
4605 | Elf_Internal_Sym sym; | |
4606 | if (!bed->s->swap_symbol_in (abfd, | |
4607 | (htab->elf.dynsym->contents | |
4608 | + r_symndx * bed->s->sizeof_sym), | |
4609 | 0, &sym)) | |
4610 | abort (); | |
d9e3b590 | 4611 | |
897463b1 L |
4612 | if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) |
4613 | return reloc_class_ifunc; | |
4614 | } | |
d9e3b590 | 4615 | } |
cae1fbbb | 4616 | |
351f65ca | 4617 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
c434dee6 | 4618 | { |
c428ce9d L |
4619 | case R_X86_64_IRELATIVE: |
4620 | return reloc_class_ifunc; | |
c434dee6 | 4621 | case R_X86_64_RELATIVE: |
1da80baa | 4622 | case R_X86_64_RELATIVE64: |
c434dee6 AJ |
4623 | return reloc_class_relative; |
4624 | case R_X86_64_JUMP_SLOT: | |
4625 | return reloc_class_plt; | |
4626 | case R_X86_64_COPY: | |
4627 | return reloc_class_copy; | |
4628 | default: | |
4629 | return reloc_class_normal; | |
4630 | } | |
4631 | } | |
4632 | ||
70256ad8 AJ |
4633 | /* Finish up the dynamic sections. */ |
4634 | ||
b34976b6 | 4635 | static bfd_boolean |
351f65ca L |
4636 | elf_x86_64_finish_dynamic_sections (bfd *output_bfd, |
4637 | struct bfd_link_info *info) | |
70256ad8 | 4638 | { |
0afcef53 | 4639 | struct elf_x86_link_hash_table *htab; |
70256ad8 | 4640 | |
9577f60b | 4641 | htab = _bfd_x86_elf_finish_dynamic_sections (output_bfd, info); |
4dfe6ac6 NC |
4642 | if (htab == NULL) |
4643 | return FALSE; | |
4644 | ||
9577f60b L |
4645 | if (! htab->elf.dynamic_sections_created) |
4646 | return TRUE; | |
70256ad8 | 4647 | |
9577f60b | 4648 | if (htab->elf.splt && htab->elf.splt->size > 0) |
e41b3a13 | 4649 | { |
9577f60b L |
4650 | elf_section_data (htab->elf.splt->output_section) |
4651 | ->this_hdr.sh_entsize = htab->plt.plt_entry_size; | |
e41b3a13 | 4652 | |
9577f60b | 4653 | if (htab->plt.has_plt0) |
fff53dae | 4654 | { |
9577f60b L |
4655 | /* Fill in the special first entry in the procedure linkage |
4656 | table. */ | |
4657 | memcpy (htab->elf.splt->contents, | |
4658 | htab->lazy_plt->plt0_entry, | |
4659 | htab->lazy_plt->plt0_entry_size); | |
4660 | /* Add offset for pushq GOT+8(%rip), since the instruction | |
4661 | uses 6 bytes subtract this value. */ | |
4662 | bfd_put_32 (output_bfd, | |
4663 | (htab->elf.sgotplt->output_section->vma | |
4664 | + htab->elf.sgotplt->output_offset | |
4665 | + 8 | |
4666 | - htab->elf.splt->output_section->vma | |
4667 | - htab->elf.splt->output_offset | |
4668 | - 6), | |
4669 | (htab->elf.splt->contents | |
4670 | + htab->lazy_plt->plt0_got1_offset)); | |
4671 | /* Add offset for the PC-relative instruction accessing | |
4672 | GOT+16, subtracting the offset to the end of that | |
4673 | instruction. */ | |
4674 | bfd_put_32 (output_bfd, | |
4675 | (htab->elf.sgotplt->output_section->vma | |
4676 | + htab->elf.sgotplt->output_offset | |
4677 | + 16 | |
4678 | - htab->elf.splt->output_section->vma | |
4679 | - htab->elf.splt->output_offset | |
4680 | - htab->lazy_plt->plt0_got2_insn_end), | |
4681 | (htab->elf.splt->contents | |
4682 | + htab->lazy_plt->plt0_got2_offset)); | |
fff53dae | 4683 | } |
fff53dae | 4684 | |
9577f60b | 4685 | if (htab->tlsdesc_plt) |
8361ed4d | 4686 | { |
9577f60b L |
4687 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
4688 | htab->elf.sgot->contents + htab->tlsdesc_got); | |
4689 | ||
4690 | memcpy (htab->elf.splt->contents + htab->tlsdesc_plt, | |
92e68c1d L |
4691 | htab->lazy_plt->plt_tlsdesc_entry, |
4692 | htab->lazy_plt->plt_tlsdesc_entry_size); | |
9577f60b | 4693 | |
bf54968b L |
4694 | /* Add offset for pushq GOT+8(%rip), since ENDBR64 uses 4 |
4695 | bytes and the instruction uses 6 bytes, subtract these | |
4696 | values. */ | |
9577f60b L |
4697 | bfd_put_32 (output_bfd, |
4698 | (htab->elf.sgotplt->output_section->vma | |
4699 | + htab->elf.sgotplt->output_offset | |
4700 | + 8 | |
4701 | - htab->elf.splt->output_section->vma | |
4702 | - htab->elf.splt->output_offset | |
4703 | - htab->tlsdesc_plt | |
92e68c1d | 4704 | - htab->lazy_plt->plt_tlsdesc_got1_insn_end), |
9577f60b L |
4705 | (htab->elf.splt->contents |
4706 | + htab->tlsdesc_plt | |
92e68c1d | 4707 | + htab->lazy_plt->plt_tlsdesc_got1_offset)); |
bf54968b L |
4708 | /* Add offset for indirect branch via GOT+TDG, where TDG |
4709 | stands for htab->tlsdesc_got, subtracting the offset | |
4710 | to the end of that instruction. */ | |
9577f60b L |
4711 | bfd_put_32 (output_bfd, |
4712 | (htab->elf.sgot->output_section->vma | |
4713 | + htab->elf.sgot->output_offset | |
4714 | + htab->tlsdesc_got | |
4715 | - htab->elf.splt->output_section->vma | |
4716 | - htab->elf.splt->output_offset | |
4717 | - htab->tlsdesc_plt | |
92e68c1d | 4718 | - htab->lazy_plt->plt_tlsdesc_got2_insn_end), |
9577f60b | 4719 | (htab->elf.splt->contents |
92e68c1d L |
4720 | + htab->tlsdesc_plt |
4721 | + htab->lazy_plt->plt_tlsdesc_got2_offset)); | |
8361ed4d L |
4722 | } |
4723 | } | |
4724 | ||
aec6b87e L |
4725 | /* Fill PLT entries for undefined weak symbols in PIE. */ |
4726 | if (bfd_link_pie (info)) | |
4727 | bfd_hash_traverse (&info->hash->table, | |
4728 | elf_x86_64_pie_finish_undefweak_symbol, | |
4729 | info); | |
4730 | ||
b34976b6 | 4731 | return TRUE; |
8d88c4ca NC |
4732 | } |
4733 | ||
233cc9c1 L |
4734 | /* Fill PLT/GOT entries and allocate dynamic relocations for local |
4735 | STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table. | |
4736 | It has to be done before elf_link_sort_relocs is called so that | |
4737 | dynamic relocations are properly sorted. */ | |
4738 | ||
4739 | static bfd_boolean | |
4740 | elf_x86_64_output_arch_local_syms | |
4741 | (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4742 | struct bfd_link_info *info, | |
4743 | void *flaginfo ATTRIBUTE_UNUSED, | |
4744 | int (*func) (void *, const char *, | |
4745 | Elf_Internal_Sym *, | |
4746 | asection *, | |
4747 | struct elf_link_hash_entry *) ATTRIBUTE_UNUSED) | |
4748 | { | |
0afcef53 L |
4749 | struct elf_x86_link_hash_table *htab |
4750 | = elf_x86_hash_table (info, X86_64_ELF_DATA); | |
233cc9c1 L |
4751 | if (htab == NULL) |
4752 | return FALSE; | |
4753 | ||
4754 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ | |
4755 | htab_traverse (htab->loc_hash_table, | |
4756 | elf_x86_64_finish_local_dynamic_symbol, | |
4757 | info); | |
4758 | ||
4759 | return TRUE; | |
4760 | } | |
4761 | ||
38b12349 | 4762 | /* Forward declaration. */ |
765e526c | 4763 | static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt; |
38b12349 L |
4764 | |
4765 | /* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all | |
4766 | dynamic relocations. */ | |
4767 | ||
4768 | static long | |
4769 | elf_x86_64_get_synthetic_symtab (bfd *abfd, | |
4770 | long symcount ATTRIBUTE_UNUSED, | |
4771 | asymbol **syms ATTRIBUTE_UNUSED, | |
4772 | long dynsymcount, | |
4773 | asymbol **dynsyms, | |
4774 | asymbol **ret) | |
4775 | { | |
f493882d | 4776 | long count, i, n; |
38b12349 | 4777 | int j; |
38b12349 | 4778 | bfd_byte *plt_contents; |
f493882d | 4779 | long relsize; |
765e526c L |
4780 | const struct elf_x86_lazy_plt_layout *lazy_plt; |
4781 | const struct elf_x86_non_lazy_plt_layout *non_lazy_plt; | |
4782 | const struct elf_x86_lazy_plt_layout *lazy_bnd_plt; | |
4783 | const struct elf_x86_non_lazy_plt_layout *non_lazy_bnd_plt; | |
4784 | const struct elf_x86_lazy_plt_layout *lazy_ibt_plt; | |
4785 | const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt; | |
38b12349 | 4786 | asection *plt; |
f493882d L |
4787 | enum elf_x86_plt_type plt_type; |
4788 | struct elf_x86_plt plts[] = | |
144bed8d | 4789 | { |
38b12349 L |
4790 | { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 }, |
4791 | { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }, | |
f2c29a16 L |
4792 | { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 }, |
4793 | { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 }, | |
dd9e66ee | 4794 | { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 } |
38b12349 | 4795 | }; |
144bed8d | 4796 | |
38b12349 | 4797 | *ret = NULL; |
144bed8d | 4798 | |
38b12349 L |
4799 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
4800 | return 0; | |
144bed8d | 4801 | |
38b12349 L |
4802 | if (dynsymcount <= 0) |
4803 | return 0; | |
cca5b8b6 | 4804 | |
38b12349 L |
4805 | relsize = bfd_get_dynamic_reloc_upper_bound (abfd); |
4806 | if (relsize <= 0) | |
4807 | return -1; | |
4808 | ||
3b4c3844 | 4809 | if (get_elf_x86_backend_data (abfd)->target_os != is_nacl) |
144bed8d | 4810 | { |
38b12349 L |
4811 | lazy_plt = &elf_x86_64_lazy_plt; |
4812 | non_lazy_plt = &elf_x86_64_non_lazy_plt; | |
4813 | lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt; | |
4814 | non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt; | |
ee2fdd6f L |
4815 | if (ABI_64_P (abfd)) |
4816 | { | |
4817 | lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt; | |
4818 | non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt; | |
4819 | } | |
4820 | else | |
4821 | { | |
4822 | lazy_ibt_plt = &elf_x32_lazy_ibt_plt; | |
4823 | non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt; | |
4824 | } | |
38b12349 L |
4825 | } |
4826 | else | |
4827 | { | |
4828 | lazy_plt = &elf_x86_64_nacl_plt; | |
4829 | non_lazy_plt = NULL; | |
4830 | lazy_bnd_plt = NULL; | |
4831 | non_lazy_bnd_plt = NULL; | |
ee2fdd6f L |
4832 | lazy_ibt_plt = NULL; |
4833 | non_lazy_ibt_plt = NULL; | |
38b12349 | 4834 | } |
144bed8d | 4835 | |
38b12349 L |
4836 | count = 0; |
4837 | for (j = 0; plts[j].name != NULL; j++) | |
4838 | { | |
4839 | plt = bfd_get_section_by_name (abfd, plts[j].name); | |
90efb642 | 4840 | if (plt == NULL || plt->size == 0) |
6f25f223 | 4841 | continue; |
533d0af0 | 4842 | |
38b12349 L |
4843 | /* Get the PLT section contents. */ |
4844 | plt_contents = (bfd_byte *) bfd_malloc (plt->size); | |
4845 | if (plt_contents == NULL) | |
4846 | break; | |
4847 | if (!bfd_get_section_contents (abfd, (asection *) plt, | |
4848 | plt_contents, 0, plt->size)) | |
4849 | { | |
4850 | free (plt_contents); | |
4851 | break; | |
4852 | } | |
144bed8d | 4853 | |
38b12349 L |
4854 | /* Check what kind of PLT it is. */ |
4855 | plt_type = plt_unknown; | |
90efb642 L |
4856 | if (plts[j].type == plt_unknown |
4857 | && (plt->size >= (lazy_plt->plt_entry_size | |
4858 | + lazy_plt->plt_entry_size))) | |
144bed8d | 4859 | { |
38b12349 L |
4860 | /* Match lazy PLT first. Need to check the first two |
4861 | instructions. */ | |
4862 | if ((memcmp (plt_contents, lazy_plt->plt0_entry, | |
4863 | lazy_plt->plt0_got1_offset) == 0) | |
4864 | && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6, | |
4865 | 2) == 0)) | |
4866 | plt_type = plt_lazy; | |
4867 | else if (lazy_bnd_plt != NULL | |
4868 | && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry, | |
4869 | lazy_bnd_plt->plt0_got1_offset) == 0) | |
4870 | && (memcmp (plt_contents + 6, | |
4871 | lazy_bnd_plt->plt0_entry + 6, 3) == 0)) | |
ec1f73bb | 4872 | { |
f2c29a16 | 4873 | plt_type = plt_lazy | plt_second; |
ee2fdd6f L |
4874 | /* The fist entry in the lazy IBT PLT is the same as the |
4875 | lazy BND PLT. */ | |
4876 | if ((memcmp (plt_contents + lazy_ibt_plt->plt_entry_size, | |
4877 | lazy_ibt_plt->plt_entry, | |
4878 | lazy_ibt_plt->plt_got_offset) == 0)) | |
4879 | lazy_plt = lazy_ibt_plt; | |
4880 | else | |
4881 | lazy_plt = lazy_bnd_plt; | |
ec1f73bb | 4882 | } |
144bed8d | 4883 | } |
fca6ae69 | 4884 | |
38b12349 | 4885 | if (non_lazy_plt != NULL |
90efb642 L |
4886 | && (plt_type == plt_unknown || plt_type == plt_non_lazy) |
4887 | && plt->size >= non_lazy_plt->plt_entry_size) | |
38b12349 L |
4888 | { |
4889 | /* Match non-lazy PLT. */ | |
4890 | if (memcmp (plt_contents, non_lazy_plt->plt_entry, | |
4891 | non_lazy_plt->plt_got_offset) == 0) | |
4892 | plt_type = plt_non_lazy; | |
4893 | } | |
4894 | ||
ee2fdd6f | 4895 | if (plt_type == plt_unknown || plt_type == plt_second) |
38b12349 | 4896 | { |
ee2fdd6f | 4897 | if (non_lazy_bnd_plt != NULL |
90efb642 | 4898 | && plt->size >= non_lazy_bnd_plt->plt_entry_size |
ee2fdd6f L |
4899 | && (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry, |
4900 | non_lazy_bnd_plt->plt_got_offset) == 0)) | |
38b12349 | 4901 | { |
ee2fdd6f | 4902 | /* Match BND PLT. */ |
f2c29a16 | 4903 | plt_type = plt_second; |
38b12349 L |
4904 | non_lazy_plt = non_lazy_bnd_plt; |
4905 | } | |
ee2fdd6f | 4906 | else if (non_lazy_ibt_plt != NULL |
90efb642 | 4907 | && plt->size >= non_lazy_ibt_plt->plt_entry_size |
ee2fdd6f L |
4908 | && (memcmp (plt_contents, |
4909 | non_lazy_ibt_plt->plt_entry, | |
4910 | non_lazy_ibt_plt->plt_got_offset) == 0)) | |
4911 | { | |
4912 | /* Match IBT PLT. */ | |
4913 | plt_type = plt_second; | |
4914 | non_lazy_plt = non_lazy_ibt_plt; | |
4915 | } | |
38b12349 L |
4916 | } |
4917 | ||
4918 | if (plt_type == plt_unknown) | |
37c0b6ee L |
4919 | { |
4920 | free (plt_contents); | |
4921 | continue; | |
4922 | } | |
38b12349 L |
4923 | |
4924 | plts[j].sec = plt; | |
4925 | plts[j].type = plt_type; | |
4926 | ||
4927 | if ((plt_type & plt_lazy)) | |
4928 | { | |
4929 | plts[j].plt_got_offset = lazy_plt->plt_got_offset; | |
4930 | plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size; | |
4931 | plts[j].plt_entry_size = lazy_plt->plt_entry_size; | |
4932 | /* Skip PLT0 in lazy PLT. */ | |
4933 | i = 1; | |
4934 | } | |
4935 | else | |
4936 | { | |
4937 | plts[j].plt_got_offset = non_lazy_plt->plt_got_offset; | |
4938 | plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size; | |
4939 | plts[j].plt_entry_size = non_lazy_plt->plt_entry_size; | |
4940 | i = 0; | |
4941 | } | |
4942 | ||
f2c29a16 L |
4943 | /* Skip lazy PLT when the second PLT is used. */ |
4944 | if (plt_type == (plt_lazy | plt_second)) | |
38b12349 L |
4945 | plts[j].count = 0; |
4946 | else | |
4947 | { | |
4948 | n = plt->size / plts[j].plt_entry_size; | |
4949 | plts[j].count = n; | |
4950 | count += n - i; | |
4951 | } | |
4952 | ||
4953 | plts[j].contents = plt_contents; | |
144bed8d L |
4954 | } |
4955 | ||
f493882d L |
4956 | return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize, |
4957 | (bfd_vma) 0, plts, dynsyms, | |
4958 | ret); | |
0ff2b86e L |
4959 | } |
4960 | ||
d2b2c203 DJ |
4961 | /* Handle an x86-64 specific section when reading an object file. This |
4962 | is called when elfcode.h finds a section with an unknown type. */ | |
4963 | ||
4964 | static bfd_boolean | |
0c723101 L |
4965 | elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr, |
4966 | const char *name, int shindex) | |
d2b2c203 DJ |
4967 | { |
4968 | if (hdr->sh_type != SHT_X86_64_UNWIND) | |
4969 | return FALSE; | |
4970 | ||
6dc132d9 | 4971 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
d2b2c203 DJ |
4972 | return FALSE; |
4973 | ||
4974 | return TRUE; | |
4975 | } | |
4976 | ||
3b22753a L |
4977 | /* Hook called by the linker routine which adds symbols from an object |
4978 | file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead | |
4979 | of .bss. */ | |
4980 | ||
4981 | static bfd_boolean | |
351f65ca | 4982 | elf_x86_64_add_symbol_hook (bfd *abfd, |
a43942db | 4983 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
351f65ca L |
4984 | Elf_Internal_Sym *sym, |
4985 | const char **namep ATTRIBUTE_UNUSED, | |
4986 | flagword *flagsp ATTRIBUTE_UNUSED, | |
4987 | asection **secp, | |
4988 | bfd_vma *valp) | |
3b22753a L |
4989 | { |
4990 | asection *lcomm; | |
4991 | ||
4992 | switch (sym->st_shndx) | |
4993 | { | |
4994 | case SHN_X86_64_LCOMMON: | |
4995 | lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON"); | |
4996 | if (lcomm == NULL) | |
4997 | { | |
4998 | lcomm = bfd_make_section_with_flags (abfd, | |
4999 | "LARGE_COMMON", | |
5000 | (SEC_ALLOC | |
5001 | | SEC_IS_COMMON | |
5002 | | SEC_LINKER_CREATED)); | |
5003 | if (lcomm == NULL) | |
5004 | return FALSE; | |
5005 | elf_section_flags (lcomm) |= SHF_X86_64_LARGE; | |
5006 | } | |
5007 | *secp = lcomm; | |
5008 | *valp = sym->st_size; | |
c35bdf6e | 5009 | return TRUE; |
3b22753a | 5010 | } |
d8045f23 | 5011 | |
3b22753a L |
5012 | return TRUE; |
5013 | } | |
5014 | ||
5015 | ||
5016 | /* Given a BFD section, try to locate the corresponding ELF section | |
5017 | index. */ | |
5018 | ||
5019 | static bfd_boolean | |
351f65ca L |
5020 | elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
5021 | asection *sec, int *index_return) | |
3b22753a L |
5022 | { |
5023 | if (sec == &_bfd_elf_large_com_section) | |
5024 | { | |
91d6fa6a | 5025 | *index_return = SHN_X86_64_LCOMMON; |
3b22753a L |
5026 | return TRUE; |
5027 | } | |
5028 | return FALSE; | |
5029 | } | |
5030 | ||
5031 | /* Process a symbol. */ | |
5032 | ||
5033 | static void | |
351f65ca L |
5034 | elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, |
5035 | asymbol *asym) | |
3b22753a L |
5036 | { |
5037 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
5038 | ||
5039 | switch (elfsym->internal_elf_sym.st_shndx) | |
5040 | { | |
5041 | case SHN_X86_64_LCOMMON: | |
5042 | asym->section = &_bfd_elf_large_com_section; | |
5043 | asym->value = elfsym->internal_elf_sym.st_size; | |
5044 | /* Common symbol doesn't set BSF_GLOBAL. */ | |
5045 | asym->flags &= ~BSF_GLOBAL; | |
5046 | break; | |
5047 | } | |
5048 | } | |
5049 | ||
5050 | static bfd_boolean | |
351f65ca | 5051 | elf_x86_64_common_definition (Elf_Internal_Sym *sym) |
3b22753a L |
5052 | { |
5053 | return (sym->st_shndx == SHN_COMMON | |
5054 | || sym->st_shndx == SHN_X86_64_LCOMMON); | |
5055 | } | |
5056 | ||
5057 | static unsigned int | |
351f65ca | 5058 | elf_x86_64_common_section_index (asection *sec) |
3b22753a L |
5059 | { |
5060 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
5061 | return SHN_COMMON; | |
5062 | else | |
5063 | return SHN_X86_64_LCOMMON; | |
5064 | } | |
5065 | ||
5066 | static asection * | |
351f65ca | 5067 | elf_x86_64_common_section (asection *sec) |
3b22753a L |
5068 | { |
5069 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
5070 | return bfd_com_section_ptr; | |
5071 | else | |
5072 | return &_bfd_elf_large_com_section; | |
5073 | } | |
5074 | ||
5075 | static bfd_boolean | |
5d13b3b3 AM |
5076 | elf_x86_64_merge_symbol (struct elf_link_hash_entry *h, |
5077 | const Elf_Internal_Sym *sym, | |
351f65ca | 5078 | asection **psec, |
5d13b3b3 AM |
5079 | bfd_boolean newdef, |
5080 | bfd_boolean olddef, | |
351f65ca | 5081 | bfd *oldbfd, |
5d13b3b3 | 5082 | const asection *oldsec) |
3b22753a L |
5083 | { |
5084 | /* A normal common symbol and a large common symbol result in a | |
00492999 L |
5085 | normal common symbol. We turn the large common symbol into a |
5086 | normal one. */ | |
5d13b3b3 | 5087 | if (!olddef |
3b22753a | 5088 | && h->root.type == bfd_link_hash_common |
5d13b3b3 AM |
5089 | && !newdef |
5090 | && bfd_is_com_section (*psec) | |
5091 | && oldsec != *psec) | |
3b22753a | 5092 | { |
00492999 | 5093 | if (sym->st_shndx == SHN_COMMON |
5d13b3b3 | 5094 | && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0) |
00492999 L |
5095 | { |
5096 | h->root.u.c.p->section | |
5097 | = bfd_make_section_old_way (oldbfd, "COMMON"); | |
5098 | h->root.u.c.p->section->flags = SEC_ALLOC; | |
5099 | } | |
5100 | else if (sym->st_shndx == SHN_X86_64_LCOMMON | |
5d13b3b3 AM |
5101 | && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0) |
5102 | *psec = bfd_com_section_ptr; | |
3b22753a L |
5103 | } |
5104 | ||
5105 | return TRUE; | |
5106 | } | |
5107 | ||
5108 | static int | |
351f65ca L |
5109 | elf_x86_64_additional_program_headers (bfd *abfd, |
5110 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
3b22753a L |
5111 | { |
5112 | asection *s; | |
9a2e389a | 5113 | int count = 0; |
3b22753a L |
5114 | |
5115 | /* Check to see if we need a large readonly segment. */ | |
5116 | s = bfd_get_section_by_name (abfd, ".lrodata"); | |
5117 | if (s && (s->flags & SEC_LOAD)) | |
5118 | count++; | |
5119 | ||
5120 | /* Check to see if we need a large data segment. Since .lbss sections | |
5121 | is placed right after the .bss section, there should be no need for | |
5122 | a large data segment just because of .lbss. */ | |
5123 | s = bfd_get_section_by_name (abfd, ".ldata"); | |
5124 | if (s && (s->flags & SEC_LOAD)) | |
5125 | count++; | |
5126 | ||
5127 | return count; | |
5128 | } | |
5129 | ||
c543bf9a L |
5130 | /* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */ |
5131 | ||
5132 | static bfd_boolean | |
5133 | elf_x86_64_relocs_compatible (const bfd_target *input, | |
5134 | const bfd_target *output) | |
5135 | { | |
5136 | return ((xvec_get_elf_backend_data (input)->s->elfclass | |
5137 | == xvec_get_elf_backend_data (output)->s->elfclass) | |
5138 | && _bfd_elf_relocs_compatible (input, output)); | |
5139 | } | |
5140 | ||
38b12349 L |
5141 | /* Set up x86-64 GNU properties. Return the first relocatable ELF input |
5142 | with GNU properties if found. Otherwise, return NULL. */ | |
5143 | ||
5144 | static bfd * | |
5145 | elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info) | |
5146 | { | |
1de031c8 | 5147 | struct elf_x86_init_table init_table; |
ee2fdd6f | 5148 | |
78984959 L |
5149 | if ((int) R_X86_64_standard >= (int) R_X86_64_converted_reloc_bit |
5150 | || (int) R_X86_64_max <= (int) R_X86_64_converted_reloc_bit | |
5151 | || ((int) (R_X86_64_GNU_VTINHERIT | R_X86_64_converted_reloc_bit) | |
5152 | != (int) R_X86_64_GNU_VTINHERIT) | |
5153 | || ((int) (R_X86_64_GNU_VTENTRY | R_X86_64_converted_reloc_bit) | |
5154 | != (int) R_X86_64_GNU_VTENTRY)) | |
5155 | abort (); | |
5156 | ||
851b6fa1 L |
5157 | /* This is unused for x86-64. */ |
5158 | init_table.plt0_pad_byte = 0x90; | |
5159 | ||
3b4c3844 | 5160 | if (get_elf_x86_backend_data (info->output_bfd)->target_os != is_nacl) |
73784fa5 | 5161 | { |
5b9c07b2 L |
5162 | const struct elf_backend_data *bed |
5163 | = get_elf_backend_data (info->output_bfd); | |
5164 | struct elf_x86_link_hash_table *htab | |
5165 | = elf_x86_hash_table (info, bed->target_id); | |
5166 | if (!htab) | |
5167 | abort (); | |
5168 | if (htab->params->bndplt) | |
ee2fdd6f | 5169 | { |
1de031c8 L |
5170 | init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt; |
5171 | init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt; | |
ee2fdd6f L |
5172 | } |
5173 | else | |
5174 | { | |
1de031c8 L |
5175 | init_table.lazy_plt = &elf_x86_64_lazy_plt; |
5176 | init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt; | |
ee2fdd6f | 5177 | } |
38b12349 | 5178 | |
a6798bab | 5179 | if (ABI_64_P (info->output_bfd)) |
38b12349 | 5180 | { |
1de031c8 L |
5181 | init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt; |
5182 | init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt; | |
38b12349 L |
5183 | } |
5184 | else | |
5185 | { | |
1de031c8 L |
5186 | init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt; |
5187 | init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt; | |
38b12349 | 5188 | } |
38b12349 L |
5189 | } |
5190 | else | |
5191 | { | |
1de031c8 L |
5192 | init_table.lazy_plt = &elf_x86_64_nacl_plt; |
5193 | init_table.non_lazy_plt = NULL; | |
5194 | init_table.lazy_ibt_plt = NULL; | |
5195 | init_table.non_lazy_ibt_plt = NULL; | |
38b12349 L |
5196 | } |
5197 | ||
7a382c1c L |
5198 | if (ABI_64_P (info->output_bfd)) |
5199 | { | |
1de031c8 L |
5200 | init_table.r_info = elf64_r_info; |
5201 | init_table.r_sym = elf64_r_sym; | |
7a382c1c L |
5202 | } |
5203 | else | |
5204 | { | |
1de031c8 L |
5205 | init_table.r_info = elf32_r_info; |
5206 | init_table.r_sym = elf32_r_sym; | |
7a382c1c L |
5207 | } |
5208 | ||
1de031c8 | 5209 | return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table); |
38b12349 L |
5210 | } |
5211 | ||
9a2e389a | 5212 | static const struct bfd_elf_special_section |
46bed679 | 5213 | elf_x86_64_special_sections[]= |
3b22753a | 5214 | { |
0112cd26 NC |
5215 | { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, |
5216 | { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
5217 | { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE}, | |
07d6d2b8 | 5218 | { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, |
0112cd26 NC |
5219 | { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, |
5220 | { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
07d6d2b8 | 5221 | { NULL, 0, 0, 0, 0 } |
3b22753a L |
5222 | }; |
5223 | ||
6d00b590 | 5224 | #define TARGET_LITTLE_SYM x86_64_elf64_vec |
70256ad8 AJ |
5225 | #define TARGET_LITTLE_NAME "elf64-x86-64" |
5226 | #define ELF_ARCH bfd_arch_i386 | |
ae95ffa6 | 5227 | #define ELF_TARGET_ID X86_64_ELF_DATA |
70256ad8 | 5228 | #define ELF_MACHINE_CODE EM_X86_64 |
f6aec96d L |
5229 | #if DEFAULT_LD_Z_SEPARATE_CODE |
5230 | # define ELF_MAXPAGESIZE 0x1000 | |
5231 | #else | |
5232 | # define ELF_MAXPAGESIZE 0x200000 | |
5233 | #endif | |
2043964e | 5234 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 5235 | #define ELF_COMMONPAGESIZE 0x1000 |
70256ad8 AJ |
5236 | |
5237 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 5238 | #define elf_backend_can_refcount 1 |
70256ad8 AJ |
5239 | #define elf_backend_want_got_plt 1 |
5240 | #define elf_backend_plt_readonly 1 | |
5241 | #define elf_backend_want_plt_sym 0 | |
5242 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE*3) | |
b491616a | 5243 | #define elf_backend_rela_normal 1 |
07d6d2b8 | 5244 | #define elf_backend_plt_alignment 4 |
f7483970 | 5245 | #define elf_backend_extern_protected_data 1 |
bedfd056 | 5246 | #define elf_backend_caches_rawsize 1 |
64f52338 | 5247 | #define elf_backend_dtrel_excludes_plt 1 |
5474d94f | 5248 | #define elf_backend_want_dynrelro 1 |
70256ad8 | 5249 | |
351f65ca | 5250 | #define elf_info_to_howto elf_x86_64_info_to_howto |
70256ad8 | 5251 | |
351f65ca | 5252 | #define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup |
157090f7 | 5253 | #define bfd_elf64_bfd_reloc_name_lookup \ |
351f65ca | 5254 | elf_x86_64_reloc_name_lookup |
70256ad8 | 5255 | |
c543bf9a | 5256 | #define elf_backend_relocs_compatible elf_x86_64_relocs_compatible |
351f65ca | 5257 | #define elf_backend_check_relocs elf_x86_64_check_relocs |
38b12349 | 5258 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
351f65ca L |
5259 | #define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections |
5260 | #define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol | |
233cc9c1 | 5261 | #define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms |
351f65ca L |
5262 | #define elf_backend_grok_prstatus elf_x86_64_grok_prstatus |
5263 | #define elf_backend_grok_psinfo elf_x86_64_grok_psinfo | |
8fd79e71 L |
5264 | #ifdef CORE_HEADER |
5265 | #define elf_backend_write_core_note elf_x86_64_write_core_note | |
5266 | #endif | |
351f65ca L |
5267 | #define elf_backend_reloc_type_class elf_x86_64_reloc_type_class |
5268 | #define elf_backend_relocate_section elf_x86_64_relocate_section | |
74541ad4 | 5269 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
407443a3 | 5270 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
0ff2b86e | 5271 | #define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab |
8d88c4ca | 5272 | |
d2b2c203 | 5273 | #define elf_backend_section_from_shdr \ |
351f65ca | 5274 | elf_x86_64_section_from_shdr |
d2b2c203 | 5275 | |
3b22753a | 5276 | #define elf_backend_section_from_bfd_section \ |
351f65ca | 5277 | elf_x86_64_elf_section_from_bfd_section |
3b22753a | 5278 | #define elf_backend_add_symbol_hook \ |
351f65ca | 5279 | elf_x86_64_add_symbol_hook |
3b22753a | 5280 | #define elf_backend_symbol_processing \ |
351f65ca | 5281 | elf_x86_64_symbol_processing |
3b22753a | 5282 | #define elf_backend_common_section_index \ |
351f65ca | 5283 | elf_x86_64_common_section_index |
3b22753a | 5284 | #define elf_backend_common_section \ |
351f65ca | 5285 | elf_x86_64_common_section |
3b22753a | 5286 | #define elf_backend_common_definition \ |
351f65ca | 5287 | elf_x86_64_common_definition |
3b22753a | 5288 | #define elf_backend_merge_symbol \ |
351f65ca | 5289 | elf_x86_64_merge_symbol |
3b22753a | 5290 | #define elf_backend_special_sections \ |
351f65ca | 5291 | elf_x86_64_special_sections |
3b22753a | 5292 | #define elf_backend_additional_program_headers \ |
351f65ca | 5293 | elf_x86_64_additional_program_headers |
38b12349 | 5294 | #define elf_backend_setup_gnu_properties \ |
9f857535 L |
5295 | elf_x86_64_link_setup_gnu_properties |
5296 | #define elf_backend_hide_symbol \ | |
5297 | _bfd_x86_elf_hide_symbol | |
3b22753a | 5298 | |
8f56f7a2 L |
5299 | #undef elf64_bed |
5300 | #define elf64_bed elf64_x86_64_bed | |
5301 | ||
8d88c4ca | 5302 | #include "elf64-target.h" |
9d7cbccd | 5303 | |
6036f486 ES |
5304 | /* CloudABI support. */ |
5305 | ||
07d6d2b8 | 5306 | #undef TARGET_LITTLE_SYM |
6036f486 | 5307 | #define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec |
07d6d2b8 | 5308 | #undef TARGET_LITTLE_NAME |
6036f486 ES |
5309 | #define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi" |
5310 | ||
5311 | #undef ELF_OSABI | |
5312 | #define ELF_OSABI ELFOSABI_CLOUDABI | |
5313 | ||
07d6d2b8 | 5314 | #undef elf64_bed |
6036f486 ES |
5315 | #define elf64_bed elf64_x86_64_cloudabi_bed |
5316 | ||
5317 | #include "elf64-target.h" | |
5318 | ||
9d7cbccd NC |
5319 | /* FreeBSD support. */ |
5320 | ||
07d6d2b8 | 5321 | #undef TARGET_LITTLE_SYM |
6d00b590 | 5322 | #define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec |
07d6d2b8 | 5323 | #undef TARGET_LITTLE_NAME |
9d7cbccd NC |
5324 | #define TARGET_LITTLE_NAME "elf64-x86-64-freebsd" |
5325 | ||
d1036acb L |
5326 | #undef ELF_OSABI |
5327 | #define ELF_OSABI ELFOSABI_FREEBSD | |
9d7cbccd | 5328 | |
07d6d2b8 | 5329 | #undef elf64_bed |
9d7cbccd NC |
5330 | #define elf64_bed elf64_x86_64_fbsd_bed |
5331 | ||
5332 | #include "elf64-target.h" | |
8a9036a4 | 5333 | |
a6cc6b3b RO |
5334 | /* Solaris 2 support. */ |
5335 | ||
5336 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5337 | #define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec |
a6cc6b3b RO |
5338 | #undef TARGET_LITTLE_NAME |
5339 | #define TARGET_LITTLE_NAME "elf64-x86-64-sol2" | |
5340 | ||
3b4c3844 L |
5341 | static const struct elf_x86_backend_data elf_x86_64_solaris_arch_bed = |
5342 | { | |
5343 | is_solaris /* os */ | |
5344 | }; | |
5345 | ||
5346 | #undef elf_backend_arch_data | |
5347 | #define elf_backend_arch_data &elf_x86_64_solaris_arch_bed | |
5348 | ||
a6cc6b3b RO |
5349 | /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE |
5350 | objects won't be recognized. */ | |
5351 | #undef ELF_OSABI | |
5352 | ||
5353 | #undef elf64_bed | |
5354 | #define elf64_bed elf64_x86_64_sol2_bed | |
5355 | ||
7dc98aea RO |
5356 | /* The 64-bit static TLS arena size is rounded to the nearest 16-byte |
5357 | boundary. */ | |
84865015 | 5358 | #undef elf_backend_static_tls_alignment |
7dc98aea RO |
5359 | #define elf_backend_static_tls_alignment 16 |
5360 | ||
a6cc6b3b RO |
5361 | /* The Solaris 2 ABI requires a plt symbol on all platforms. |
5362 | ||
5363 | Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output | |
5364 | File, p.63. */ | |
84865015 | 5365 | #undef elf_backend_want_plt_sym |
a6cc6b3b RO |
5366 | #define elf_backend_want_plt_sym 1 |
5367 | ||
84865015 NC |
5368 | #undef elf_backend_strtab_flags |
5369 | #define elf_backend_strtab_flags SHF_STRINGS | |
5370 | ||
5371 | static bfd_boolean | |
5522f910 NC |
5372 | elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED, |
5373 | bfd *obfd ATTRIBUTE_UNUSED, | |
5374 | const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED, | |
5375 | Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED) | |
84865015 NC |
5376 | { |
5377 | /* PR 19938: FIXME: Need to add code for setting the sh_info | |
5378 | and sh_link fields of Solaris specific section types. */ | |
5379 | return FALSE; | |
5380 | } | |
5381 | ||
5522f910 NC |
5382 | #undef elf_backend_copy_special_section_fields |
5383 | #define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields | |
84865015 | 5384 | |
a6cc6b3b RO |
5385 | #include "elf64-target.h" |
5386 | ||
8059fb19 RM |
5387 | /* Native Client support. */ |
5388 | ||
64b384e1 RM |
5389 | static bfd_boolean |
5390 | elf64_x86_64_nacl_elf_object_p (bfd *abfd) | |
5391 | { | |
5392 | /* Set the right machine number for a NaCl x86-64 ELF64 file. */ | |
5393 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl); | |
5394 | return TRUE; | |
5395 | } | |
5396 | ||
8059fb19 | 5397 | #undef TARGET_LITTLE_SYM |
6d00b590 | 5398 | #define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec |
8059fb19 RM |
5399 | #undef TARGET_LITTLE_NAME |
5400 | #define TARGET_LITTLE_NAME "elf64-x86-64-nacl" | |
5401 | #undef elf64_bed | |
5402 | #define elf64_bed elf64_x86_64_nacl_bed | |
5403 | ||
5404 | #undef ELF_MAXPAGESIZE | |
5405 | #undef ELF_MINPAGESIZE | |
5406 | #undef ELF_COMMONPAGESIZE | |
5407 | #define ELF_MAXPAGESIZE 0x10000 | |
5408 | #define ELF_MINPAGESIZE 0x10000 | |
5409 | #define ELF_COMMONPAGESIZE 0x10000 | |
5410 | ||
5411 | /* Restore defaults. */ | |
5412 | #undef ELF_OSABI | |
5413 | #undef elf_backend_static_tls_alignment | |
5414 | #undef elf_backend_want_plt_sym | |
5415 | #define elf_backend_want_plt_sym 0 | |
84865015 | 5416 | #undef elf_backend_strtab_flags |
5522f910 | 5417 | #undef elf_backend_copy_special_section_fields |
8059fb19 RM |
5418 | |
5419 | /* NaCl uses substantially different PLT entries for the same effects. */ | |
5420 | ||
5421 | #undef elf_backend_plt_alignment | |
5422 | #define elf_backend_plt_alignment 5 | |
5423 | #define NACL_PLT_ENTRY_SIZE 64 | |
5424 | #define NACLMASK 0xe0 /* 32-byte alignment mask. */ | |
5425 | ||
5426 | static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] = | |
5427 | { | |
07d6d2b8 | 5428 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ |
8059fb19 | 5429 | 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */ |
07d6d2b8 AM |
5430 | 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */ |
5431 | 0x4d, 0x01, 0xfb, /* add %r15, %r11 */ | |
5432 | 0x41, 0xff, 0xe3, /* jmpq *%r11 */ | |
8059fb19 | 5433 | |
ea2d813e | 5434 | /* 9-byte nop sequence to pad out to the next 32-byte boundary. */ |
70cc877f | 5435 | 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */ |
ea2d813e RM |
5436 | |
5437 | /* 32 bytes of nop to pad out to the standard size. */ | |
3ddf1bdd | 5438 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */ |
8059fb19 | 5439 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ |
3ddf1bdd | 5440 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */ |
8059fb19 | 5441 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ |
07d6d2b8 AM |
5442 | 0x66, /* excess data16 prefix */ |
5443 | 0x90 /* nop */ | |
8059fb19 RM |
5444 | }; |
5445 | ||
5446 | static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] = | |
5447 | { | |
5448 | 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */ | |
07d6d2b8 AM |
5449 | 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */ |
5450 | 0x4d, 0x01, 0xfb, /* add %r15, %r11 */ | |
5451 | 0x41, 0xff, 0xe3, /* jmpq *%r11 */ | |
8059fb19 RM |
5452 | |
5453 | /* 15-byte nop sequence to pad out to the next 32-byte boundary. */ | |
3ddf1bdd | 5454 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */ |
8059fb19 RM |
5455 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ |
5456 | ||
5457 | /* Lazy GOT entries point here (32-byte aligned). */ | |
07d6d2b8 AM |
5458 | 0x68, /* pushq immediate */ |
5459 | 0, 0, 0, 0, /* replaced with index into relocation table. */ | |
5460 | 0xe9, /* jmp relative */ | |
5461 | 0, 0, 0, 0, /* replaced with offset to start of .plt0. */ | |
8059fb19 | 5462 | |
07d6d2b8 | 5463 | /* 22 bytes of nop to pad out to the standard size. */ |
3ddf1bdd | 5464 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */ |
8059fb19 | 5465 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ |
07d6d2b8 | 5466 | 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */ |
8059fb19 RM |
5467 | }; |
5468 | ||
5469 | /* .eh_frame covering the .plt section. */ | |
5470 | ||
5471 | static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] = | |
5472 | { | |
07d6d2b8 AM |
5473 | #if (PLT_CIE_LENGTH != 20 \ |
5474 | || PLT_FDE_LENGTH != 36 \ | |
5475 | || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \ | |
8059fb19 | 5476 | || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12) |
851b6fa1 | 5477 | # error "Need elf_x86_backend_data parameters for eh_frame_plt offsets!" |
8059fb19 RM |
5478 | #endif |
5479 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
5480 | 0, 0, 0, 0, /* CIE ID */ | |
5481 | 1, /* CIE version */ | |
07d6d2b8 | 5482 | 'z', 'R', 0, /* Augmentation string */ |
8059fb19 | 5483 | 1, /* Code alignment factor */ |
07d6d2b8 | 5484 | 0x78, /* Data alignment factor */ |
8059fb19 RM |
5485 | 16, /* Return address column */ |
5486 | 1, /* Augmentation size */ | |
5487 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
5488 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
5489 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
5490 | DW_CFA_nop, DW_CFA_nop, | |
5491 | ||
5492 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
5493 | PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */ | |
5494 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
5495 | 0, 0, 0, 0, /* .plt size goes here */ | |
5496 | 0, /* Augmentation size */ | |
5497 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
5498 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
5499 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
5500 | DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */ | |
5501 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
5502 | 13, /* Block length */ | |
5503 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
5504 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
5505 | DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge, | |
5506 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
5507 | DW_CFA_nop, DW_CFA_nop | |
5508 | }; | |
5509 | ||
765e526c | 5510 | static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt = |
8059fb19 | 5511 | { |
07d6d2b8 AM |
5512 | elf_x86_64_nacl_plt0_entry, /* plt0_entry */ |
5513 | NACL_PLT_ENTRY_SIZE, /* plt0_entry_size */ | |
5514 | elf_x86_64_nacl_plt_entry, /* plt_entry */ | |
5515 | NACL_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
92e68c1d L |
5516 | elf_x86_64_nacl_plt0_entry, /* plt_tlsdesc_entry */ |
5517 | NACL_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */ | |
5518 | 2, /* plt_tlsdesc_got1_offset */ | |
5519 | 9, /* plt_tlsdesc_got2_offset */ | |
5520 | 6, /* plt_tlsdesc_got1_insn_end */ | |
5521 | 13, /* plt_tlsdesc_got2_insn_end */ | |
07d6d2b8 AM |
5522 | 2, /* plt0_got1_offset */ |
5523 | 9, /* plt0_got2_offset */ | |
5524 | 13, /* plt0_got2_insn_end */ | |
5525 | 3, /* plt_got_offset */ | |
5526 | 33, /* plt_reloc_offset */ | |
5527 | 38, /* plt_plt_offset */ | |
5528 | 7, /* plt_got_insn_size */ | |
5529 | 42, /* plt_plt_insn_end */ | |
5530 | 32, /* plt_lazy_offset */ | |
5531 | elf_x86_64_nacl_plt0_entry, /* pic_plt0_entry */ | |
5532 | elf_x86_64_nacl_plt_entry, /* pic_plt_entry */ | |
5533 | elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */ | |
38b12349 L |
5534 | sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */ |
5535 | }; | |
5536 | ||
851b6fa1 | 5537 | static const struct elf_x86_backend_data elf_x86_64_nacl_arch_bed = |
38b12349 | 5538 | { |
07d6d2b8 | 5539 | is_nacl /* os */ |
8059fb19 RM |
5540 | }; |
5541 | ||
5542 | #undef elf_backend_arch_data | |
5543 | #define elf_backend_arch_data &elf_x86_64_nacl_arch_bed | |
5544 | ||
64b384e1 RM |
5545 | #undef elf_backend_object_p |
5546 | #define elf_backend_object_p elf64_x86_64_nacl_elf_object_p | |
5a68afcf RM |
5547 | #undef elf_backend_modify_segment_map |
5548 | #define elf_backend_modify_segment_map nacl_modify_segment_map | |
6d6c25c8 AM |
5549 | #undef elf_backend_modify_headers |
5550 | #define elf_backend_modify_headers nacl_modify_headers | |
887badb3 RM |
5551 | #undef elf_backend_final_write_processing |
5552 | #define elf_backend_final_write_processing nacl_final_write_processing | |
5a68afcf | 5553 | |
8059fb19 RM |
5554 | #include "elf64-target.h" |
5555 | ||
5556 | /* Native Client x32 support. */ | |
5557 | ||
64b384e1 RM |
5558 | static bfd_boolean |
5559 | elf32_x86_64_nacl_elf_object_p (bfd *abfd) | |
5560 | { | |
5561 | /* Set the right machine number for a NaCl x86-64 ELF32 file. */ | |
5562 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl); | |
5563 | return TRUE; | |
5564 | } | |
5565 | ||
07d6d2b8 | 5566 | #undef TARGET_LITTLE_SYM |
6d00b590 | 5567 | #define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec |
07d6d2b8 | 5568 | #undef TARGET_LITTLE_NAME |
8059fb19 RM |
5569 | #define TARGET_LITTLE_NAME "elf32-x86-64-nacl" |
5570 | #undef elf32_bed | |
5571 | #define elf32_bed elf32_x86_64_nacl_bed | |
5572 | ||
8059fb19 RM |
5573 | #define bfd_elf32_bfd_reloc_type_lookup \ |
5574 | elf_x86_64_reloc_type_lookup | |
5575 | #define bfd_elf32_bfd_reloc_name_lookup \ | |
5576 | elf_x86_64_reloc_name_lookup | |
b7365e5d L |
5577 | #define bfd_elf32_get_synthetic_symtab \ |
5578 | elf_x86_64_get_synthetic_symtab | |
8059fb19 RM |
5579 | |
5580 | #undef elf_backend_object_p | |
5581 | #define elf_backend_object_p \ | |
64b384e1 | 5582 | elf32_x86_64_nacl_elf_object_p |
8059fb19 RM |
5583 | |
5584 | #undef elf_backend_bfd_from_remote_memory | |
5585 | #define elf_backend_bfd_from_remote_memory \ | |
5586 | _bfd_elf32_bfd_from_remote_memory | |
5587 | ||
5588 | #undef elf_backend_size_info | |
5589 | #define elf_backend_size_info \ | |
5590 | _bfd_elf32_size_info | |
5591 | ||
8f56f7a2 L |
5592 | #undef elf32_bed |
5593 | #define elf32_bed elf32_x86_64_bed | |
5594 | ||
8059fb19 RM |
5595 | #include "elf32-target.h" |
5596 | ||
5597 | /* Restore defaults. */ | |
5a68afcf | 5598 | #undef elf_backend_object_p |
8059fb19 | 5599 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
5a68afcf RM |
5600 | #undef elf_backend_bfd_from_remote_memory |
5601 | #undef elf_backend_size_info | |
5602 | #undef elf_backend_modify_segment_map | |
6d6c25c8 | 5603 | #undef elf_backend_modify_headers |
887badb3 | 5604 | #undef elf_backend_final_write_processing |
8059fb19 | 5605 | |
8a9036a4 L |
5606 | /* Intel L1OM support. */ |
5607 | ||
5608 | static bfd_boolean | |
5609 | elf64_l1om_elf_object_p (bfd *abfd) | |
5610 | { | |
5611 | /* Set the right machine number for an L1OM elf64 file. */ | |
5612 | bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om); | |
5613 | return TRUE; | |
5614 | } | |
5615 | ||
5616 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5617 | #define TARGET_LITTLE_SYM l1om_elf64_vec |
8a9036a4 L |
5618 | #undef TARGET_LITTLE_NAME |
5619 | #define TARGET_LITTLE_NAME "elf64-l1om" | |
5620 | #undef ELF_ARCH | |
5621 | #define ELF_ARCH bfd_arch_l1om | |
5622 | ||
5623 | #undef ELF_MACHINE_CODE | |
5624 | #define ELF_MACHINE_CODE EM_L1OM | |
5625 | ||
5626 | #undef ELF_OSABI | |
5627 | ||
5628 | #undef elf64_bed | |
5629 | #define elf64_bed elf64_l1om_bed | |
5630 | ||
5631 | #undef elf_backend_object_p | |
5632 | #define elf_backend_object_p elf64_l1om_elf_object_p | |
5633 | ||
8059fb19 RM |
5634 | /* Restore defaults. */ |
5635 | #undef ELF_MAXPAGESIZE | |
5636 | #undef ELF_MINPAGESIZE | |
5637 | #undef ELF_COMMONPAGESIZE | |
f6aec96d L |
5638 | #if DEFAULT_LD_Z_SEPARATE_CODE |
5639 | # define ELF_MAXPAGESIZE 0x1000 | |
5640 | #else | |
5641 | # define ELF_MAXPAGESIZE 0x200000 | |
5642 | #endif | |
8059fb19 RM |
5643 | #define ELF_MINPAGESIZE 0x1000 |
5644 | #define ELF_COMMONPAGESIZE 0x1000 | |
5645 | #undef elf_backend_plt_alignment | |
5646 | #define elf_backend_plt_alignment 4 | |
5647 | #undef elf_backend_arch_data | |
5648 | #define elf_backend_arch_data &elf_x86_64_arch_bed | |
1a0c107f | 5649 | |
8a9036a4 L |
5650 | #include "elf64-target.h" |
5651 | ||
5652 | /* FreeBSD L1OM support. */ | |
5653 | ||
5654 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5655 | #define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec |
8a9036a4 L |
5656 | #undef TARGET_LITTLE_NAME |
5657 | #define TARGET_LITTLE_NAME "elf64-l1om-freebsd" | |
5658 | ||
5659 | #undef ELF_OSABI | |
5660 | #define ELF_OSABI ELFOSABI_FREEBSD | |
5661 | ||
5662 | #undef elf64_bed | |
5663 | #define elf64_bed elf64_l1om_fbsd_bed | |
5664 | ||
8a9036a4 | 5665 | #include "elf64-target.h" |
351f65ca | 5666 | |
7a9068fe L |
5667 | /* Intel K1OM support. */ |
5668 | ||
5669 | static bfd_boolean | |
5670 | elf64_k1om_elf_object_p (bfd *abfd) | |
5671 | { | |
5672 | /* Set the right machine number for an K1OM elf64 file. */ | |
5673 | bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om); | |
5674 | return TRUE; | |
5675 | } | |
5676 | ||
5677 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5678 | #define TARGET_LITTLE_SYM k1om_elf64_vec |
7a9068fe L |
5679 | #undef TARGET_LITTLE_NAME |
5680 | #define TARGET_LITTLE_NAME "elf64-k1om" | |
5681 | #undef ELF_ARCH | |
5682 | #define ELF_ARCH bfd_arch_k1om | |
5683 | ||
5684 | #undef ELF_MACHINE_CODE | |
5685 | #define ELF_MACHINE_CODE EM_K1OM | |
5686 | ||
5687 | #undef ELF_OSABI | |
5688 | ||
5689 | #undef elf64_bed | |
5690 | #define elf64_bed elf64_k1om_bed | |
5691 | ||
5692 | #undef elf_backend_object_p | |
5693 | #define elf_backend_object_p elf64_k1om_elf_object_p | |
5694 | ||
5695 | #undef elf_backend_static_tls_alignment | |
5696 | ||
5697 | #undef elf_backend_want_plt_sym | |
5698 | #define elf_backend_want_plt_sym 0 | |
5699 | ||
5700 | #include "elf64-target.h" | |
5701 | ||
5702 | /* FreeBSD K1OM support. */ | |
5703 | ||
5704 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5705 | #define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec |
7a9068fe L |
5706 | #undef TARGET_LITTLE_NAME |
5707 | #define TARGET_LITTLE_NAME "elf64-k1om-freebsd" | |
5708 | ||
5709 | #undef ELF_OSABI | |
5710 | #define ELF_OSABI ELFOSABI_FREEBSD | |
5711 | ||
5712 | #undef elf64_bed | |
5713 | #define elf64_bed elf64_k1om_fbsd_bed | |
5714 | ||
5715 | #include "elf64-target.h" | |
5716 | ||
351f65ca L |
5717 | /* 32bit x86-64 support. */ |
5718 | ||
351f65ca | 5719 | #undef TARGET_LITTLE_SYM |
6d00b590 | 5720 | #define TARGET_LITTLE_SYM x86_64_elf32_vec |
351f65ca L |
5721 | #undef TARGET_LITTLE_NAME |
5722 | #define TARGET_LITTLE_NAME "elf32-x86-64" | |
8059fb19 | 5723 | #undef elf32_bed |
351f65ca L |
5724 | |
5725 | #undef ELF_ARCH | |
5726 | #define ELF_ARCH bfd_arch_i386 | |
5727 | ||
5728 | #undef ELF_MACHINE_CODE | |
5729 | #define ELF_MACHINE_CODE EM_X86_64 | |
5730 | ||
351f65ca L |
5731 | #undef ELF_OSABI |
5732 | ||
351f65ca L |
5733 | #undef elf_backend_object_p |
5734 | #define elf_backend_object_p \ | |
5735 | elf32_x86_64_elf_object_p | |
5736 | ||
5737 | #undef elf_backend_bfd_from_remote_memory | |
5738 | #define elf_backend_bfd_from_remote_memory \ | |
5739 | _bfd_elf32_bfd_from_remote_memory | |
5740 | ||
5741 | #undef elf_backend_size_info | |
5742 | #define elf_backend_size_info \ | |
5743 | _bfd_elf32_size_info | |
5744 | ||
5745 | #include "elf32-target.h" |