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351f65ca | 1 | /* X86-64 specific support for ELF |
2571583a | 2 | Copyright (C) 2000-2017 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 | ||
78984959 L |
199 | /* Set if a relocation is converted from a GOTPCREL relocation. */ |
200 | #define R_X86_64_converted_reloc_bit (1 << 7) | |
201 | ||
daf1c414 | 202 | #define X86_PCREL_TYPE_P(TYPE) \ |
d8045f23 NC |
203 | ( ((TYPE) == R_X86_64_PC8) \ |
204 | || ((TYPE) == R_X86_64_PC16) \ | |
205 | || ((TYPE) == R_X86_64_PC32) \ | |
c3320543 | 206 | || ((TYPE) == R_X86_64_PC32_BND) \ |
d8045f23 NC |
207 | || ((TYPE) == R_X86_64_PC64)) |
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 */ |
4eca0228 AM |
282 | _bfd_error_handler (_("%B: invalid relocation type %d"), |
283 | abfd, (int) r_type); | |
67a4f2b7 AO |
284 | r_type = R_X86_64_NONE; |
285 | } | |
286 | i = r_type; | |
287 | } | |
288 | else | |
289 | i = r_type - (unsigned int) R_X86_64_vt_offset; | |
290 | BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type); | |
291 | return &x86_64_elf_howto_table[i]; | |
292 | } | |
8d88c4ca NC |
293 | |
294 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
295 | static reloc_howto_type * | |
351f65ca L |
296 | elf_x86_64_reloc_type_lookup (bfd *abfd, |
297 | bfd_reloc_code_real_type code) | |
8d88c4ca NC |
298 | { |
299 | unsigned int i; | |
27482721 | 300 | |
8d88c4ca NC |
301 | for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map); |
302 | i++) | |
303 | { | |
304 | if (x86_64_reloc_map[i].bfd_reloc_val == code) | |
351f65ca L |
305 | return elf_x86_64_rtype_to_howto (abfd, |
306 | x86_64_reloc_map[i].elf_reloc_val); | |
8d88c4ca | 307 | } |
5860e3f8 | 308 | return NULL; |
8d88c4ca NC |
309 | } |
310 | ||
157090f7 | 311 | static reloc_howto_type * |
d7921315 | 312 | elf_x86_64_reloc_name_lookup (bfd *abfd, |
351f65ca | 313 | const char *r_name) |
157090f7 AM |
314 | { |
315 | unsigned int i; | |
316 | ||
d7921315 L |
317 | if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0) |
318 | { | |
319 | /* Get x32 R_X86_64_32. */ | |
320 | reloc_howto_type *reloc | |
321 | = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1]; | |
322 | BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32); | |
323 | return reloc; | |
324 | } | |
325 | ||
326 | for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++) | |
157090f7 AM |
327 | if (x86_64_elf_howto_table[i].name != NULL |
328 | && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0) | |
329 | return &x86_64_elf_howto_table[i]; | |
330 | ||
331 | return NULL; | |
332 | } | |
333 | ||
8d88c4ca | 334 | /* Given an x86_64 ELF reloc type, fill in an arelent structure. */ |
8da6118f | 335 | |
8d88c4ca | 336 | static void |
351f65ca L |
337 | elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
338 | Elf_Internal_Rela *dst) | |
8d88c4ca | 339 | { |
67a4f2b7 | 340 | unsigned r_type; |
8d88c4ca | 341 | |
351f65ca | 342 | r_type = ELF32_R_TYPE (dst->r_info); |
78984959 L |
343 | if (r_type != (unsigned int) R_X86_64_GNU_VTINHERIT |
344 | && r_type != (unsigned int) R_X86_64_GNU_VTENTRY) | |
345 | r_type &= ~R_X86_64_converted_reloc_bit; | |
351f65ca | 346 | cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type); |
262c0a87 NC |
347 | |
348 | BFD_ASSERT (r_type == cache_ptr->howto->type || cache_ptr->howto->type == R_X86_64_NONE); | |
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 | |
439 | static char * | |
440 | elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
441 | int note_type, ...) | |
442 | { | |
443 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8fd79e71 L |
444 | va_list ap; |
445 | const char *fname, *psargs; | |
446 | long pid; | |
447 | int cursig; | |
448 | const void *gregs; | |
449 | ||
450 | switch (note_type) | |
451 | { | |
452 | default: | |
453 | return NULL; | |
454 | ||
455 | case NT_PRPSINFO: | |
456 | va_start (ap, note_type); | |
457 | fname = va_arg (ap, const char *); | |
458 | psargs = va_arg (ap, const char *); | |
459 | va_end (ap); | |
460 | ||
461 | if (bed->s->elfclass == ELFCLASS32) | |
462 | { | |
463 | prpsinfo32_t data; | |
464 | memset (&data, 0, sizeof (data)); | |
465 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
466 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
e85c6a70 JK |
467 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
468 | &data, sizeof (data)); | |
8fd79e71 L |
469 | } |
470 | else | |
471 | { | |
b1bd052d | 472 | prpsinfo64_t data; |
8fd79e71 L |
473 | memset (&data, 0, sizeof (data)); |
474 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
475 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
e85c6a70 JK |
476 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
477 | &data, sizeof (data)); | |
8fd79e71 | 478 | } |
e85c6a70 | 479 | /* NOTREACHED */ |
8fd79e71 L |
480 | |
481 | case NT_PRSTATUS: | |
482 | va_start (ap, note_type); | |
483 | pid = va_arg (ap, long); | |
484 | cursig = va_arg (ap, int); | |
485 | gregs = va_arg (ap, const void *); | |
486 | va_end (ap); | |
487 | ||
488 | if (bed->s->elfclass == ELFCLASS32) | |
489 | { | |
490 | if (bed->elf_machine_code == EM_X86_64) | |
491 | { | |
492 | prstatusx32_t prstat; | |
493 | memset (&prstat, 0, sizeof (prstat)); | |
494 | prstat.pr_pid = pid; | |
495 | prstat.pr_cursig = cursig; | |
496 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
497 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
498 | &prstat, sizeof (prstat)); | |
8fd79e71 L |
499 | } |
500 | else | |
501 | { | |
502 | prstatus32_t prstat; | |
503 | memset (&prstat, 0, sizeof (prstat)); | |
504 | prstat.pr_pid = pid; | |
505 | prstat.pr_cursig = cursig; | |
506 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
507 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
508 | &prstat, sizeof (prstat)); | |
8fd79e71 L |
509 | } |
510 | } | |
511 | else | |
512 | { | |
b1bd052d | 513 | prstatus64_t prstat; |
8fd79e71 L |
514 | memset (&prstat, 0, sizeof (prstat)); |
515 | prstat.pr_pid = pid; | |
516 | prstat.pr_cursig = cursig; | |
517 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
e85c6a70 JK |
518 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
519 | &prstat, sizeof (prstat)); | |
8fd79e71 | 520 | } |
8fd79e71 | 521 | } |
e85c6a70 | 522 | /* NOTREACHED */ |
8fd79e71 L |
523 | } |
524 | #endif | |
3bab7989 | 525 | \f |
407443a3 | 526 | /* Functions for the x86-64 ELF linker. */ |
70256ad8 | 527 | |
70256ad8 AJ |
528 | /* The size in bytes of an entry in the global offset table. */ |
529 | ||
530 | #define GOT_ENTRY_SIZE 8 | |
8d88c4ca | 531 | |
38b12349 | 532 | /* The size in bytes of an entry in the lazy procedure linkage table. */ |
8d88c4ca | 533 | |
38b12349 | 534 | #define LAZY_PLT_ENTRY_SIZE 16 |
70256ad8 | 535 | |
38b12349 L |
536 | /* The size in bytes of an entry in the non-lazy procedure linkage |
537 | table. */ | |
70256ad8 | 538 | |
38b12349 L |
539 | #define NON_LAZY_PLT_ENTRY_SIZE 8 |
540 | ||
541 | /* The first entry in a lazy procedure linkage table looks like this. | |
542 | See the SVR4 ABI i386 supplement and the x86-64 ABI to see how this | |
543 | works. */ | |
544 | ||
545 | static const bfd_byte elf_x86_64_lazy_plt0_entry[LAZY_PLT_ENTRY_SIZE] = | |
70256ad8 | 546 | { |
653165cc AJ |
547 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ |
548 | 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */ | |
10efb593 | 549 | 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */ |
70256ad8 AJ |
550 | }; |
551 | ||
38b12349 | 552 | /* Subsequent entries in a lazy procedure linkage table look like this. */ |
70256ad8 | 553 | |
38b12349 | 554 | static const bfd_byte elf_x86_64_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] = |
70256ad8 | 555 | { |
653165cc | 556 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ |
407443a3 | 557 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ |
653165cc | 558 | 0x68, /* pushq immediate */ |
70256ad8 AJ |
559 | 0, 0, 0, 0, /* replaced with index into relocation table. */ |
560 | 0xe9, /* jmp relative */ | |
561 | 0, 0, 0, 0 /* replaced with offset to start of .plt0. */ | |
562 | }; | |
563 | ||
38b12349 | 564 | /* The first entry in a lazy procedure linkage table with BND prefix |
0ff2b86e L |
565 | like this. */ |
566 | ||
38b12349 | 567 | static const bfd_byte elf_x86_64_lazy_bnd_plt0_entry[LAZY_PLT_ENTRY_SIZE] = |
0ff2b86e L |
568 | { |
569 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ | |
570 | 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */ | |
571 | 0x0f, 0x1f, 0 /* nopl (%rax) */ | |
572 | }; | |
573 | ||
38b12349 L |
574 | /* Subsequent entries for branches with BND prefx in a lazy procedure |
575 | linkage table look like this. */ | |
0ff2b86e | 576 | |
38b12349 | 577 | static const bfd_byte elf_x86_64_lazy_bnd_plt_entry[LAZY_PLT_ENTRY_SIZE] = |
0ff2b86e L |
578 | { |
579 | 0x68, 0, 0, 0, 0, /* pushq immediate */ | |
580 | 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */ | |
581 | 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */ | |
582 | }; | |
583 | ||
ee2fdd6f L |
584 | /* The first entry in the IBT-enabled lazy procedure linkage table is the |
585 | the same as the lazy PLT with BND prefix so that bound registers are | |
586 | preserved when control is passed to dynamic linker. Subsequent | |
587 | entries for a IBT-enabled lazy procedure linkage table look like | |
588 | this. */ | |
589 | ||
590 | static const bfd_byte elf_x86_64_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] = | |
591 | { | |
592 | 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */ | |
593 | 0x68, 0, 0, 0, 0, /* pushq immediate */ | |
594 | 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */ | |
595 | 0x90 /* nop */ | |
596 | }; | |
597 | ||
598 | /* The first entry in the x32 IBT-enabled lazy procedure linkage table | |
de194d85 | 599 | is the same as the normal lazy PLT. Subsequent entries for an |
ee2fdd6f L |
600 | x32 IBT-enabled lazy procedure linkage table look like this. */ |
601 | ||
602 | static const bfd_byte elf_x32_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] = | |
603 | { | |
604 | 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */ | |
605 | 0x68, 0, 0, 0, 0, /* pushq immediate */ | |
606 | 0xe9, 0, 0, 0, 0, /* jmpq relative */ | |
607 | 0x66, 0x90 /* xchg %ax,%ax */ | |
608 | }; | |
609 | ||
38b12349 | 610 | /* Entries in the non-lazey procedure linkage table look like this. */ |
0ff2b86e | 611 | |
38b12349 | 612 | static const bfd_byte elf_x86_64_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] = |
0ff2b86e | 613 | { |
38b12349 L |
614 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ |
615 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ | |
616 | 0x66, 0x90 /* xchg %ax,%ax */ | |
0ff2b86e L |
617 | }; |
618 | ||
38b12349 L |
619 | /* Entries for branches with BND prefix in the non-lazey procedure |
620 | linkage table look like this. */ | |
0ff2b86e | 621 | |
38b12349 | 622 | static const bfd_byte elf_x86_64_non_lazy_bnd_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] = |
0ff2b86e | 623 | { |
38b12349 L |
624 | 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */ |
625 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ | |
626 | 0x90 /* nop */ | |
0ff2b86e L |
627 | }; |
628 | ||
ee2fdd6f L |
629 | /* Entries for branches with IBT-enabled in the non-lazey procedure |
630 | linkage table look like this. They have the same size as the lazy | |
631 | PLT entry. */ | |
632 | ||
633 | static const bfd_byte elf_x86_64_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] = | |
634 | { | |
635 | 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */ | |
636 | 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */ | |
637 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ | |
638 | 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopl 0x0(%rax,%rax,1) */ | |
639 | }; | |
640 | ||
641 | /* Entries for branches with IBT-enabled in the x32 non-lazey procedure | |
642 | linkage table look like this. They have the same size as the lazy | |
643 | PLT entry. */ | |
644 | ||
645 | static const bfd_byte elf_x32_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] = | |
646 | { | |
647 | 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */ | |
648 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ | |
649 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ | |
650 | 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */ | |
651 | }; | |
652 | ||
38b12349 | 653 | /* .eh_frame covering the lazy .plt section. */ |
e41b3a13 | 654 | |
38b12349 | 655 | static const bfd_byte elf_x86_64_eh_frame_lazy_plt[] = |
e41b3a13 | 656 | { |
e41b3a13 JJ |
657 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ |
658 | 0, 0, 0, 0, /* CIE ID */ | |
659 | 1, /* CIE version */ | |
660 | 'z', 'R', 0, /* Augmentation string */ | |
661 | 1, /* Code alignment factor */ | |
662 | 0x78, /* Data alignment factor */ | |
663 | 16, /* Return address column */ | |
664 | 1, /* Augmentation size */ | |
665 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
666 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
667 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
668 | DW_CFA_nop, DW_CFA_nop, | |
669 | ||
670 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
671 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
672 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
673 | 0, 0, 0, 0, /* .plt size goes here */ | |
674 | 0, /* Augmentation size */ | |
675 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
676 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
677 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
678 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
679 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
680 | 11, /* Block length */ | |
681 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
682 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
683 | DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge, | |
684 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
685 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
686 | }; | |
687 | ||
38b12349 | 688 | /* .eh_frame covering the lazy BND .plt section. */ |
9e659176 | 689 | |
38b12349 | 690 | static const bfd_byte elf_x86_64_eh_frame_lazy_bnd_plt[] = |
9e659176 L |
691 | { |
692 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
693 | 0, 0, 0, 0, /* CIE ID */ | |
694 | 1, /* CIE version */ | |
695 | 'z', 'R', 0, /* Augmentation string */ | |
696 | 1, /* Code alignment factor */ | |
697 | 0x78, /* Data alignment factor */ | |
698 | 16, /* Return address column */ | |
699 | 1, /* Augmentation size */ | |
700 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
701 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
702 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
703 | DW_CFA_nop, DW_CFA_nop, | |
704 | ||
705 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
706 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
707 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
708 | 0, 0, 0, 0, /* .plt size goes here */ | |
709 | 0, /* Augmentation size */ | |
710 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
711 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
712 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
713 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
714 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
715 | 11, /* Block length */ | |
716 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
717 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
718 | DW_OP_lit15, DW_OP_and, DW_OP_lit5, DW_OP_ge, | |
719 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
720 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
721 | }; | |
722 | ||
ee2fdd6f L |
723 | /* .eh_frame covering the lazy .plt section with IBT-enabled. */ |
724 | ||
725 | static const bfd_byte elf_x86_64_eh_frame_lazy_ibt_plt[] = | |
726 | { | |
727 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
728 | 0, 0, 0, 0, /* CIE ID */ | |
729 | 1, /* CIE version */ | |
730 | 'z', 'R', 0, /* Augmentation string */ | |
731 | 1, /* Code alignment factor */ | |
732 | 0x78, /* Data alignment factor */ | |
733 | 16, /* Return address column */ | |
734 | 1, /* Augmentation size */ | |
735 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
736 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
737 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
738 | DW_CFA_nop, DW_CFA_nop, | |
739 | ||
740 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
741 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
742 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
743 | 0, 0, 0, 0, /* .plt size goes here */ | |
744 | 0, /* Augmentation size */ | |
745 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
746 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
747 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
748 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
749 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
750 | 11, /* Block length */ | |
751 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
752 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
753 | DW_OP_lit15, DW_OP_and, DW_OP_lit10, DW_OP_ge, | |
754 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
755 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
756 | }; | |
757 | ||
758 | /* .eh_frame covering the x32 lazy .plt section with IBT-enabled. */ | |
759 | ||
760 | static const bfd_byte elf_x32_eh_frame_lazy_ibt_plt[] = | |
761 | { | |
762 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
763 | 0, 0, 0, 0, /* CIE ID */ | |
764 | 1, /* CIE version */ | |
765 | 'z', 'R', 0, /* Augmentation string */ | |
766 | 1, /* Code alignment factor */ | |
767 | 0x78, /* Data alignment factor */ | |
768 | 16, /* Return address column */ | |
769 | 1, /* Augmentation size */ | |
770 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
771 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
772 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
773 | DW_CFA_nop, DW_CFA_nop, | |
774 | ||
775 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
776 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
777 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
778 | 0, 0, 0, 0, /* .plt size goes here */ | |
779 | 0, /* Augmentation size */ | |
780 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
781 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
782 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
783 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
784 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
785 | 11, /* Block length */ | |
786 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
787 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
788 | DW_OP_lit15, DW_OP_and, DW_OP_lit9, DW_OP_ge, | |
789 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
790 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
791 | }; | |
792 | ||
38b12349 | 793 | /* .eh_frame covering the non-lazy .plt section. */ |
fff53dae | 794 | |
38b12349 | 795 | static const bfd_byte elf_x86_64_eh_frame_non_lazy_plt[] = |
fff53dae L |
796 | { |
797 | #define PLT_GOT_FDE_LENGTH 20 | |
798 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
799 | 0, 0, 0, 0, /* CIE ID */ | |
800 | 1, /* CIE version */ | |
801 | 'z', 'R', 0, /* Augmentation string */ | |
802 | 1, /* Code alignment factor */ | |
803 | 0x78, /* Data alignment factor */ | |
804 | 16, /* Return address column */ | |
805 | 1, /* Augmentation size */ | |
806 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
807 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
808 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
809 | DW_CFA_nop, DW_CFA_nop, | |
810 | ||
811 | PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
812 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
38b12349 L |
813 | 0, 0, 0, 0, /* the start of non-lazy .plt goes here */ |
814 | 0, 0, 0, 0, /* non-lazy .plt size goes here */ | |
fff53dae L |
815 | 0, /* Augmentation size */ |
816 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, | |
817 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
818 | }; | |
819 | ||
38b12349 L |
820 | /* Architecture-specific backend data for x86-64. */ |
821 | ||
822 | struct elf_x86_64_backend_data | |
823 | { | |
824 | /* Target system. */ | |
825 | enum | |
826 | { | |
827 | is_normal, | |
828 | is_nacl | |
829 | } os; | |
eed180f8 RM |
830 | }; |
831 | ||
f8222080 L |
832 | #define get_elf_x86_64_arch_data(bed) \ |
833 | ((const struct elf_x86_64_backend_data *) (bed)->arch_data) | |
834 | ||
eed180f8 | 835 | #define get_elf_x86_64_backend_data(abfd) \ |
f8222080 | 836 | get_elf_x86_64_arch_data (get_elf_backend_data (abfd)) |
eed180f8 | 837 | |
eed180f8 | 838 | /* These are the standard parameters. */ |
765e526c | 839 | static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_plt = |
eed180f8 | 840 | { |
38b12349 | 841 | elf_x86_64_lazy_plt0_entry, /* plt0_entry */ |
765e526c | 842 | LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */ |
38b12349 L |
843 | elf_x86_64_lazy_plt_entry, /* plt_entry */ |
844 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
eed180f8 RM |
845 | 2, /* plt0_got1_offset */ |
846 | 8, /* plt0_got2_offset */ | |
847 | 12, /* plt0_got2_insn_end */ | |
848 | 2, /* plt_got_offset */ | |
849 | 7, /* plt_reloc_offset */ | |
850 | 12, /* plt_plt_offset */ | |
851 | 6, /* plt_got_insn_size */ | |
38b12349 | 852 | LAZY_PLT_ENTRY_SIZE, /* plt_plt_insn_end */ |
eed180f8 | 853 | 6, /* plt_lazy_offset */ |
a6798bab L |
854 | elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */ |
855 | elf_x86_64_lazy_plt_entry, /* pic_plt_entry */ | |
38b12349 L |
856 | elf_x86_64_eh_frame_lazy_plt, /* eh_frame_plt */ |
857 | sizeof (elf_x86_64_eh_frame_lazy_plt) /* eh_frame_plt_size */ | |
858 | }; | |
859 | ||
765e526c | 860 | static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_plt = |
38b12349 L |
861 | { |
862 | elf_x86_64_non_lazy_plt_entry, /* plt_entry */ | |
a6798bab | 863 | elf_x86_64_non_lazy_plt_entry, /* pic_plt_entry */ |
38b12349 L |
864 | NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ |
865 | 2, /* plt_got_offset */ | |
866 | 6, /* plt_got_insn_size */ | |
867 | elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */ | |
868 | sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */ | |
eed180f8 RM |
869 | }; |
870 | ||
765e526c | 871 | static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_bnd_plt = |
0ff2b86e | 872 | { |
38b12349 | 873 | elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */ |
765e526c | 874 | LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */ |
38b12349 L |
875 | elf_x86_64_lazy_bnd_plt_entry, /* plt_entry */ |
876 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
0ff2b86e L |
877 | 2, /* plt0_got1_offset */ |
878 | 1+8, /* plt0_got2_offset */ | |
879 | 1+12, /* plt0_got2_insn_end */ | |
880 | 1+2, /* plt_got_offset */ | |
881 | 1, /* plt_reloc_offset */ | |
882 | 7, /* plt_plt_offset */ | |
883 | 1+6, /* plt_got_insn_size */ | |
884 | 11, /* plt_plt_insn_end */ | |
885 | 0, /* plt_lazy_offset */ | |
a6798bab L |
886 | elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */ |
887 | elf_x86_64_lazy_bnd_plt_entry, /* pic_plt_entry */ | |
38b12349 L |
888 | elf_x86_64_eh_frame_lazy_bnd_plt, /* eh_frame_plt */ |
889 | sizeof (elf_x86_64_eh_frame_lazy_bnd_plt) /* eh_frame_plt_size */ | |
890 | }; | |
891 | ||
765e526c | 892 | static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_bnd_plt = |
38b12349 L |
893 | { |
894 | elf_x86_64_non_lazy_bnd_plt_entry, /* plt_entry */ | |
a6798bab | 895 | elf_x86_64_non_lazy_bnd_plt_entry, /* pic_plt_entry */ |
38b12349 L |
896 | NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ |
897 | 1+2, /* plt_got_offset */ | |
898 | 1+6, /* plt_got_insn_size */ | |
899 | elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */ | |
900 | sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */ | |
901 | }; | |
902 | ||
765e526c | 903 | static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_ibt_plt = |
ee2fdd6f L |
904 | { |
905 | elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */ | |
765e526c | 906 | LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */ |
ee2fdd6f L |
907 | elf_x86_64_lazy_ibt_plt_entry, /* plt_entry */ |
908 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
909 | 2, /* plt0_got1_offset */ | |
910 | 1+8, /* plt0_got2_offset */ | |
911 | 1+12, /* plt0_got2_insn_end */ | |
912 | 4+1+2, /* plt_got_offset */ | |
913 | 4+1, /* plt_reloc_offset */ | |
914 | 4+1+6, /* plt_plt_offset */ | |
915 | 4+1+6, /* plt_got_insn_size */ | |
916 | 4+1+5+5, /* plt_plt_insn_end */ | |
917 | 0, /* plt_lazy_offset */ | |
a6798bab L |
918 | elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */ |
919 | elf_x86_64_lazy_ibt_plt_entry, /* pic_plt_entry */ | |
ee2fdd6f L |
920 | elf_x86_64_eh_frame_lazy_ibt_plt, /* eh_frame_plt */ |
921 | sizeof (elf_x86_64_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */ | |
922 | }; | |
923 | ||
765e526c | 924 | static const struct elf_x86_lazy_plt_layout elf_x32_lazy_ibt_plt = |
ee2fdd6f L |
925 | { |
926 | elf_x86_64_lazy_plt0_entry, /* plt0_entry */ | |
765e526c | 927 | LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */ |
ee2fdd6f L |
928 | elf_x32_lazy_ibt_plt_entry, /* plt_entry */ |
929 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
930 | 2, /* plt0_got1_offset */ | |
931 | 8, /* plt0_got2_offset */ | |
932 | 12, /* plt0_got2_insn_end */ | |
933 | 4+2, /* plt_got_offset */ | |
934 | 4+1, /* plt_reloc_offset */ | |
935 | 4+6, /* plt_plt_offset */ | |
936 | 4+6, /* plt_got_insn_size */ | |
937 | 4+5+5, /* plt_plt_insn_end */ | |
938 | 0, /* plt_lazy_offset */ | |
a6798bab L |
939 | elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */ |
940 | elf_x32_lazy_ibt_plt_entry, /* pic_plt_entry */ | |
ee2fdd6f L |
941 | elf_x32_eh_frame_lazy_ibt_plt, /* eh_frame_plt */ |
942 | sizeof (elf_x32_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */ | |
943 | }; | |
944 | ||
765e526c | 945 | static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_ibt_plt = |
ee2fdd6f L |
946 | { |
947 | elf_x86_64_non_lazy_ibt_plt_entry, /* plt_entry */ | |
a6798bab | 948 | elf_x86_64_non_lazy_ibt_plt_entry, /* pic_plt_entry */ |
ee2fdd6f L |
949 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ |
950 | 4+1+2, /* plt_got_offset */ | |
951 | 4+1+6, /* plt_got_insn_size */ | |
952 | elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */ | |
953 | sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */ | |
954 | }; | |
955 | ||
765e526c | 956 | static const struct elf_x86_non_lazy_plt_layout elf_x32_non_lazy_ibt_plt = |
ee2fdd6f L |
957 | { |
958 | elf_x32_non_lazy_ibt_plt_entry, /* plt_entry */ | |
a6798bab | 959 | elf_x32_non_lazy_ibt_plt_entry, /* pic_plt_entry */ |
ee2fdd6f L |
960 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ |
961 | 4+2, /* plt_got_offset */ | |
962 | 4+6, /* plt_got_insn_size */ | |
963 | elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */ | |
964 | sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */ | |
965 | }; | |
966 | ||
38b12349 L |
967 | static const struct elf_x86_64_backend_data elf_x86_64_arch_bed = |
968 | { | |
969 | is_normal /* os */ | |
0ff2b86e L |
970 | }; |
971 | ||
eed180f8 RM |
972 | #define elf_backend_arch_data &elf_x86_64_arch_bed |
973 | ||
b34976b6 | 974 | static bfd_boolean |
27482721 | 975 | elf64_x86_64_elf_object_p (bfd *abfd) |
bffbf940 | 976 | { |
8d88c4ca NC |
977 | /* Set the right machine number for an x86-64 elf64 file. */ |
978 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); | |
b34976b6 | 979 | return TRUE; |
8d88c4ca NC |
980 | } |
981 | ||
8059fb19 RM |
982 | static bfd_boolean |
983 | elf32_x86_64_elf_object_p (bfd *abfd) | |
984 | { | |
985 | /* Set the right machine number for an x86-64 elf32 file. */ | |
986 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32); | |
987 | return TRUE; | |
988 | } | |
989 | ||
142411ca L |
990 | /* Return TRUE if the TLS access code sequence support transition |
991 | from R_TYPE. */ | |
992 | ||
993 | static bfd_boolean | |
351f65ca L |
994 | elf_x86_64_check_tls_transition (bfd *abfd, |
995 | struct bfd_link_info *info, | |
996 | asection *sec, | |
997 | bfd_byte *contents, | |
998 | Elf_Internal_Shdr *symtab_hdr, | |
999 | struct elf_link_hash_entry **sym_hashes, | |
1000 | unsigned int r_type, | |
1001 | const Elf_Internal_Rela *rel, | |
1002 | const Elf_Internal_Rela *relend) | |
bffbf940 | 1003 | { |
142411ca L |
1004 | unsigned int val; |
1005 | unsigned long r_symndx; | |
5c98a14e | 1006 | bfd_boolean largepic = FALSE; |
142411ca L |
1007 | struct elf_link_hash_entry *h; |
1008 | bfd_vma offset; | |
0afcef53 | 1009 | struct elf_x86_link_hash_table *htab; |
e2cbcd91 | 1010 | bfd_byte *call; |
1d4af308 | 1011 | bfd_boolean indirect_call; |
142411ca | 1012 | |
0afcef53 | 1013 | htab = elf_x86_hash_table (info, X86_64_ELF_DATA); |
142411ca | 1014 | offset = rel->r_offset; |
bffbf940 | 1015 | switch (r_type) |
142411ca L |
1016 | { |
1017 | case R_X86_64_TLSGD: | |
1018 | case R_X86_64_TLSLD: | |
1019 | if ((rel + 1) >= relend) | |
1020 | return FALSE; | |
1021 | ||
1022 | if (r_type == R_X86_64_TLSGD) | |
1023 | { | |
52bc799a | 1024 | /* Check transition from GD access model. For 64bit, only |
142411ca | 1025 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
e2cbcd91 L |
1026 | .word 0x6666; rex64; call __tls_get_addr@PLT |
1027 | or | |
1028 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi | |
1029 | .byte 0x66; rex64 | |
1030 | call *__tls_get_addr@GOTPCREL(%rip) | |
1031 | which may be converted to | |
1032 | addr32 call __tls_get_addr | |
52bc799a L |
1033 | can transit to different access model. For 32bit, only |
1034 | leaq foo@tlsgd(%rip), %rdi | |
e2cbcd91 L |
1035 | .word 0x6666; rex64; call __tls_get_addr@PLT |
1036 | or | |
1037 | leaq foo@tlsgd(%rip), %rdi | |
1038 | .byte 0x66; rex64 | |
1039 | call *__tls_get_addr@GOTPCREL(%rip) | |
1040 | which may be converted to | |
1041 | addr32 call __tls_get_addr | |
1042 | can transit to different access model. For largepic, | |
5c98a14e | 1043 | we also support: |
e2cbcd91 L |
1044 | leaq foo@tlsgd(%rip), %rdi |
1045 | movabsq $__tls_get_addr@pltoff, %rax | |
1046 | addq $r15, %rax | |
1047 | call *%rax | |
1048 | or | |
5c98a14e JJ |
1049 | leaq foo@tlsgd(%rip), %rdi |
1050 | movabsq $__tls_get_addr@pltoff, %rax | |
1051 | addq $rbx, %rax | |
e2cbcd91 | 1052 | call *%rax */ |
142411ca | 1053 | |
fa289a5f AM |
1054 | static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d }; |
1055 | ||
5c98a14e | 1056 | if ((offset + 12) > sec->size) |
142411ca | 1057 | return FALSE; |
52bc799a | 1058 | |
e2cbcd91 L |
1059 | call = contents + offset + 4; |
1060 | if (call[0] != 0x66 | |
1061 | || !((call[1] == 0x48 | |
1062 | && call[2] == 0xff | |
1063 | && call[3] == 0x15) | |
1064 | || (call[1] == 0x48 | |
1065 | && call[2] == 0x67 | |
1066 | && call[3] == 0xe8) | |
1067 | || (call[1] == 0x66 | |
1068 | && call[2] == 0x48 | |
1069 | && call[3] == 0xe8))) | |
5c98a14e JJ |
1070 | { |
1071 | if (!ABI_64_P (abfd) | |
1072 | || (offset + 19) > sec->size | |
1073 | || offset < 3 | |
e2cbcd91 L |
1074 | || memcmp (call - 7, leaq + 1, 3) != 0 |
1075 | || memcmp (call, "\x48\xb8", 2) != 0 | |
1076 | || call[11] != 0x01 | |
1077 | || call[13] != 0xff | |
1078 | || call[14] != 0xd0 | |
1079 | || !((call[10] == 0x48 && call[12] == 0xd8) | |
1080 | || (call[10] == 0x4c && call[12] == 0xf8))) | |
5c98a14e JJ |
1081 | return FALSE; |
1082 | largepic = TRUE; | |
1083 | } | |
1084 | else if (ABI_64_P (abfd)) | |
52bc799a | 1085 | { |
52bc799a | 1086 | if (offset < 4 |
fa289a5f | 1087 | || memcmp (contents + offset - 4, leaq, 4) != 0) |
52bc799a L |
1088 | return FALSE; |
1089 | } | |
1090 | else | |
1091 | { | |
52bc799a | 1092 | if (offset < 3 |
fa289a5f | 1093 | || memcmp (contents + offset - 3, leaq + 1, 3) != 0) |
52bc799a L |
1094 | return FALSE; |
1095 | } | |
e2cbcd91 | 1096 | indirect_call = call[2] == 0xff; |
142411ca L |
1097 | } |
1098 | else | |
1099 | { | |
1100 | /* Check transition from LD access model. Only | |
1101 | leaq foo@tlsld(%rip), %rdi; | |
e2cbcd91 L |
1102 | call __tls_get_addr@PLT |
1103 | or | |
1104 | leaq foo@tlsld(%rip), %rdi; | |
1105 | call *__tls_get_addr@GOTPCREL(%rip) | |
1106 | which may be converted to | |
1107 | addr32 call __tls_get_addr | |
5c98a14e JJ |
1108 | can transit to different access model. For largepic |
1109 | we also support: | |
e2cbcd91 L |
1110 | leaq foo@tlsld(%rip), %rdi |
1111 | movabsq $__tls_get_addr@pltoff, %rax | |
1112 | addq $r15, %rax | |
1113 | call *%rax | |
1114 | or | |
5c98a14e JJ |
1115 | leaq foo@tlsld(%rip), %rdi |
1116 | movabsq $__tls_get_addr@pltoff, %rax | |
1117 | addq $rbx, %rax | |
e2cbcd91 | 1118 | call *%rax */ |
142411ca | 1119 | |
fa289a5f | 1120 | static const unsigned char lea[] = { 0x48, 0x8d, 0x3d }; |
142411ca L |
1121 | |
1122 | if (offset < 3 || (offset + 9) > sec->size) | |
1123 | return FALSE; | |
1124 | ||
5c98a14e | 1125 | if (memcmp (contents + offset - 3, lea, 3) != 0) |
142411ca | 1126 | return FALSE; |
5c98a14e | 1127 | |
e2cbcd91 L |
1128 | call = contents + offset + 4; |
1129 | if (!(call[0] == 0xe8 | |
1130 | || (call[0] == 0xff && call[1] == 0x15) | |
1131 | || (call[0] == 0x67 && call[1] == 0xe8))) | |
5c98a14e JJ |
1132 | { |
1133 | if (!ABI_64_P (abfd) | |
1134 | || (offset + 19) > sec->size | |
e2cbcd91 L |
1135 | || memcmp (call, "\x48\xb8", 2) != 0 |
1136 | || call[11] != 0x01 | |
1137 | || call[13] != 0xff | |
1138 | || call[14] != 0xd0 | |
1139 | || !((call[10] == 0x48 && call[12] == 0xd8) | |
1140 | || (call[10] == 0x4c && call[12] == 0xf8))) | |
5c98a14e JJ |
1141 | return FALSE; |
1142 | largepic = TRUE; | |
1143 | } | |
e2cbcd91 | 1144 | indirect_call = call[0] == 0xff; |
142411ca L |
1145 | } |
1146 | ||
351f65ca | 1147 | r_symndx = htab->r_sym (rel[1].r_info); |
142411ca L |
1148 | if (r_symndx < symtab_hdr->sh_info) |
1149 | return FALSE; | |
1150 | ||
1151 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1d4af308 | 1152 | if (h == NULL |
0afcef53 | 1153 | || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr) |
e2cbcd91 | 1154 | return FALSE; |
e2cbcd91 | 1155 | else |
78984959 L |
1156 | { |
1157 | r_type = (ELF32_R_TYPE (rel[1].r_info) | |
1158 | & ~R_X86_64_converted_reloc_bit); | |
1159 | if (largepic) | |
1160 | return r_type == R_X86_64_PLTOFF64; | |
1161 | else if (indirect_call) | |
1162 | return r_type == R_X86_64_GOTPCRELX; | |
1163 | else | |
1164 | return (r_type == R_X86_64_PC32 || r_type == R_X86_64_PLT32); | |
1165 | } | |
142411ca L |
1166 | |
1167 | case R_X86_64_GOTTPOFF: | |
1168 | /* Check transition from IE access model: | |
4a4c5f25 L |
1169 | mov foo@gottpoff(%rip), %reg |
1170 | add foo@gottpoff(%rip), %reg | |
142411ca L |
1171 | */ |
1172 | ||
4a4c5f25 L |
1173 | /* Check REX prefix first. */ |
1174 | if (offset >= 3 && (offset + 4) <= sec->size) | |
1175 | { | |
1176 | val = bfd_get_8 (abfd, contents + offset - 3); | |
1177 | if (val != 0x48 && val != 0x4c) | |
1178 | { | |
1179 | /* X32 may have 0x44 REX prefix or no REX prefix. */ | |
1180 | if (ABI_64_P (abfd)) | |
1181 | return FALSE; | |
1182 | } | |
1183 | } | |
1184 | else | |
1185 | { | |
1186 | /* X32 may not have any REX prefix. */ | |
1187 | if (ABI_64_P (abfd)) | |
1188 | return FALSE; | |
1189 | if (offset < 2 || (offset + 3) > sec->size) | |
1190 | return FALSE; | |
1191 | } | |
142411ca L |
1192 | |
1193 | val = bfd_get_8 (abfd, contents + offset - 2); | |
1194 | if (val != 0x8b && val != 0x03) | |
1195 | return FALSE; | |
1196 | ||
1197 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1198 | return (val & 0xc7) == 5; | |
1199 | ||
1200 | case R_X86_64_GOTPC32_TLSDESC: | |
1201 | /* Check transition from GDesc access model: | |
1202 | leaq x@tlsdesc(%rip), %rax | |
1203 | ||
1204 | Make sure it's a leaq adding rip to a 32-bit offset | |
1205 | into any register, although it's probably almost always | |
1206 | going to be rax. */ | |
1207 | ||
1208 | if (offset < 3 || (offset + 4) > sec->size) | |
1209 | return FALSE; | |
1210 | ||
1211 | val = bfd_get_8 (abfd, contents + offset - 3); | |
1212 | if ((val & 0xfb) != 0x48) | |
1213 | return FALSE; | |
1214 | ||
1215 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1216 | return FALSE; | |
1217 | ||
1218 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1219 | return (val & 0xc7) == 0x05; | |
1220 | ||
1221 | case R_X86_64_TLSDESC_CALL: | |
1222 | /* Check transition from GDesc access model: | |
1223 | call *x@tlsdesc(%rax) | |
1224 | */ | |
1225 | if (offset + 2 <= sec->size) | |
1226 | { | |
1227 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
e2cbcd91 L |
1228 | call = contents + offset; |
1229 | return call[0] == 0xff && call[1] == 0x10; | |
142411ca L |
1230 | } |
1231 | ||
1232 | return FALSE; | |
1233 | ||
1234 | default: | |
1235 | abort (); | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | /* Return TRUE if the TLS access transition is OK or no transition | |
1240 | will be performed. Update R_TYPE if there is a transition. */ | |
1241 | ||
1242 | static bfd_boolean | |
351f65ca L |
1243 | elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd, |
1244 | asection *sec, bfd_byte *contents, | |
1245 | Elf_Internal_Shdr *symtab_hdr, | |
1246 | struct elf_link_hash_entry **sym_hashes, | |
1247 | unsigned int *r_type, int tls_type, | |
1248 | const Elf_Internal_Rela *rel, | |
1249 | const Elf_Internal_Rela *relend, | |
1250 | struct elf_link_hash_entry *h, | |
bedfd056 L |
1251 | unsigned long r_symndx, |
1252 | bfd_boolean from_relocate_section) | |
142411ca L |
1253 | { |
1254 | unsigned int from_type = *r_type; | |
1255 | unsigned int to_type = from_type; | |
1256 | bfd_boolean check = TRUE; | |
1257 | ||
bb1cb422 L |
1258 | /* Skip TLS transition for functions. */ |
1259 | if (h != NULL | |
1260 | && (h->type == STT_FUNC | |
1261 | || h->type == STT_GNU_IFUNC)) | |
1262 | return TRUE; | |
1263 | ||
142411ca | 1264 | switch (from_type) |
bffbf940 JJ |
1265 | { |
1266 | case R_X86_64_TLSGD: | |
67a4f2b7 AO |
1267 | case R_X86_64_GOTPC32_TLSDESC: |
1268 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 1269 | case R_X86_64_GOTTPOFF: |
0e1862bb | 1270 | if (bfd_link_executable (info)) |
142411ca L |
1271 | { |
1272 | if (h == NULL) | |
1273 | to_type = R_X86_64_TPOFF32; | |
1274 | else | |
1275 | to_type = R_X86_64_GOTTPOFF; | |
1276 | } | |
1277 | ||
bedfd056 L |
1278 | /* When we are called from elf_x86_64_relocate_section, there may |
1279 | be additional transitions based on TLS_TYPE. */ | |
1280 | if (from_relocate_section) | |
142411ca L |
1281 | { |
1282 | unsigned int new_to_type = to_type; | |
1283 | ||
51537393 | 1284 | if (TLS_TRANSITION_IE_TO_LE_P (info, h, tls_type)) |
142411ca L |
1285 | new_to_type = R_X86_64_TPOFF32; |
1286 | ||
1287 | if (to_type == R_X86_64_TLSGD | |
1288 | || to_type == R_X86_64_GOTPC32_TLSDESC | |
1289 | || to_type == R_X86_64_TLSDESC_CALL) | |
1290 | { | |
1291 | if (tls_type == GOT_TLS_IE) | |
1292 | new_to_type = R_X86_64_GOTTPOFF; | |
1293 | } | |
1294 | ||
1295 | /* We checked the transition before when we were called from | |
351f65ca | 1296 | elf_x86_64_check_relocs. We only want to check the new |
142411ca L |
1297 | transition which hasn't been checked before. */ |
1298 | check = new_to_type != to_type && from_type == to_type; | |
1299 | to_type = new_to_type; | |
1300 | } | |
1301 | ||
1302 | break; | |
1303 | ||
bffbf940 | 1304 | case R_X86_64_TLSLD: |
0e1862bb | 1305 | if (bfd_link_executable (info)) |
142411ca L |
1306 | to_type = R_X86_64_TPOFF32; |
1307 | break; | |
1308 | ||
1309 | default: | |
1310 | return TRUE; | |
bffbf940 JJ |
1311 | } |
1312 | ||
142411ca L |
1313 | /* Return TRUE if there is no transition. */ |
1314 | if (from_type == to_type) | |
1315 | return TRUE; | |
1316 | ||
1317 | /* Check if the transition can be performed. */ | |
1318 | if (check | |
351f65ca L |
1319 | && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents, |
1320 | symtab_hdr, sym_hashes, | |
1321 | from_type, rel, relend)) | |
142411ca | 1322 | { |
2f629d23 | 1323 | reloc_howto_type *from, *to; |
4c544807 | 1324 | const char *name; |
142411ca | 1325 | |
351f65ca L |
1326 | from = elf_x86_64_rtype_to_howto (abfd, from_type); |
1327 | to = elf_x86_64_rtype_to_howto (abfd, to_type); | |
142411ca | 1328 | |
4c544807 L |
1329 | if (h) |
1330 | name = h->root.root.string; | |
1331 | else | |
1332 | { | |
0afcef53 | 1333 | struct elf_x86_link_hash_table *htab; |
4dfe6ac6 | 1334 | |
0afcef53 | 1335 | htab = elf_x86_hash_table (info, X86_64_ELF_DATA); |
4dfe6ac6 NC |
1336 | if (htab == NULL) |
1337 | name = "*unknown*"; | |
1338 | else | |
1339 | { | |
1340 | Elf_Internal_Sym *isym; | |
1341 | ||
1342 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1343 | abfd, r_symndx); | |
1344 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1345 | } | |
4c544807 L |
1346 | } |
1347 | ||
4eca0228 | 1348 | _bfd_error_handler |
695344c0 | 1349 | /* xgettext:c-format */ |
d42c267e | 1350 | (_("%B: TLS transition from %s to %s against `%s' at %#Lx " |
142411ca | 1351 | "in section `%A' failed"), |
d42c267e | 1352 | abfd, from->name, to->name, name, rel->r_offset, sec); |
142411ca L |
1353 | bfd_set_error (bfd_error_bad_value); |
1354 | return FALSE; | |
1355 | } | |
1356 | ||
1357 | *r_type = to_type; | |
1358 | return TRUE; | |
bffbf940 JJ |
1359 | } |
1360 | ||
c1d11331 L |
1361 | /* Rename some of the generic section flags to better document how they |
1362 | are used here. */ | |
6999821f | 1363 | #define check_relocs_failed sec_flg0 |
338c190a L |
1364 | |
1365 | static bfd_boolean | |
aab921ad L |
1366 | elf_x86_64_need_pic (struct bfd_link_info *info, |
1367 | bfd *input_bfd, asection *sec, | |
338c190a L |
1368 | struct elf_link_hash_entry *h, |
1369 | Elf_Internal_Shdr *symtab_hdr, | |
1370 | Elf_Internal_Sym *isym, | |
1371 | reloc_howto_type *howto) | |
1372 | { | |
1373 | const char *v = ""; | |
1374 | const char *und = ""; | |
1375 | const char *pic = ""; | |
aab921ad | 1376 | const char *object; |
338c190a L |
1377 | |
1378 | const char *name; | |
1379 | if (h) | |
1380 | { | |
1381 | name = h->root.root.string; | |
1382 | switch (ELF_ST_VISIBILITY (h->other)) | |
1383 | { | |
1384 | case STV_HIDDEN: | |
1385 | v = _("hidden symbol "); | |
1386 | break; | |
1387 | case STV_INTERNAL: | |
1388 | v = _("internal symbol "); | |
1389 | break; | |
1390 | case STV_PROTECTED: | |
1391 | v = _("protected symbol "); | |
1392 | break; | |
1393 | default: | |
0afcef53 | 1394 | if (((struct elf_x86_link_hash_entry *) h)->def_protected) |
a5b4ee94 L |
1395 | v = _("protected symbol "); |
1396 | else | |
1397 | v = _("symbol "); | |
338c190a L |
1398 | pic = _("; recompile with -fPIC"); |
1399 | break; | |
1400 | } | |
1401 | ||
1402 | if (!h->def_regular && !h->def_dynamic) | |
1403 | und = _("undefined "); | |
1404 | } | |
1405 | else | |
1406 | { | |
1407 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, isym, NULL); | |
1408 | pic = _("; recompile with -fPIC"); | |
1409 | } | |
1410 | ||
aab921ad L |
1411 | if (bfd_link_dll (info)) |
1412 | object = _("a shared object"); | |
1413 | else if (bfd_link_pie (info)) | |
1414 | object = _("a PIE object"); | |
1415 | else | |
1416 | object = _("a PDE object"); | |
1417 | ||
695344c0 | 1418 | /* xgettext:c-format */ |
4eca0228 | 1419 | _bfd_error_handler (_("%B: relocation %s against %s%s`%s' can " |
aab921ad L |
1420 | "not be used when making %s%s"), |
1421 | input_bfd, howto->name, und, v, name, | |
1422 | object, pic); | |
338c190a L |
1423 | bfd_set_error (bfd_error_bad_value); |
1424 | sec->check_relocs_failed = 1; | |
1425 | return FALSE; | |
1426 | } | |
c1d11331 | 1427 | |
c175a657 L |
1428 | /* With the local symbol, foo, we convert |
1429 | mov foo@GOTPCREL(%rip), %reg | |
1430 | to | |
1431 | lea foo(%rip), %reg | |
1432 | and convert | |
1433 | call/jmp *foo@GOTPCREL(%rip) | |
1434 | to | |
1435 | nop call foo/jmp foo nop | |
1436 | When PIC is false, convert | |
1437 | test %reg, foo@GOTPCREL(%rip) | |
1438 | to | |
1439 | test $foo, %reg | |
1440 | and convert | |
1441 | binop foo@GOTPCREL(%rip), %reg | |
1442 | to | |
1443 | binop $foo, %reg | |
1444 | where binop is one of adc, add, and, cmp, or, sbb, sub, xor | |
1445 | instructions. */ | |
1446 | ||
1447 | static bfd_boolean | |
8b43e456 | 1448 | elf_x86_64_convert_load_reloc (bfd *abfd, |
c175a657 | 1449 | bfd_byte *contents, |
6999821f | 1450 | unsigned int *r_type_p, |
c175a657 L |
1451 | Elf_Internal_Rela *irel, |
1452 | struct elf_link_hash_entry *h, | |
1453 | bfd_boolean *converted, | |
1454 | struct bfd_link_info *link_info) | |
1455 | { | |
0afcef53 | 1456 | struct elf_x86_link_hash_table *htab; |
c175a657 | 1457 | bfd_boolean is_pic; |
8b43e456 | 1458 | bfd_boolean no_overflow; |
c175a657 L |
1459 | bfd_boolean relocx; |
1460 | bfd_boolean to_reloc_pc32; | |
1461 | asection *tsec; | |
c175a657 L |
1462 | bfd_signed_vma raddend; |
1463 | unsigned int opcode; | |
1464 | unsigned int modrm; | |
6999821f | 1465 | unsigned int r_type = *r_type_p; |
c175a657 | 1466 | unsigned int r_symndx; |
c175a657 L |
1467 | bfd_vma roff = irel->r_offset; |
1468 | ||
1469 | if (roff < (r_type == R_X86_64_REX_GOTPCRELX ? 3 : 2)) | |
1470 | return TRUE; | |
1471 | ||
1472 | raddend = irel->r_addend; | |
1473 | /* Addend for 32-bit PC-relative relocation must be -4. */ | |
1474 | if (raddend != -4) | |
1475 | return TRUE; | |
1476 | ||
0afcef53 | 1477 | htab = elf_x86_hash_table (link_info, X86_64_ELF_DATA); |
c175a657 L |
1478 | is_pic = bfd_link_pic (link_info); |
1479 | ||
1480 | relocx = (r_type == R_X86_64_GOTPCRELX | |
1481 | || r_type == R_X86_64_REX_GOTPCRELX); | |
1482 | ||
8b43e456 L |
1483 | /* TRUE if --no-relax is used. */ |
1484 | no_overflow = link_info->disable_target_specific_optimizations > 1; | |
c175a657 L |
1485 | |
1486 | r_symndx = htab->r_sym (irel->r_info); | |
1487 | ||
1488 | opcode = bfd_get_8 (abfd, contents + roff - 2); | |
1489 | ||
1490 | /* Convert mov to lea since it has been done for a while. */ | |
1491 | if (opcode != 0x8b) | |
1492 | { | |
1493 | /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX | |
1494 | for call, jmp or one of adc, add, and, cmp, or, sbb, sub, | |
1495 | test, xor instructions. */ | |
1496 | if (!relocx) | |
1497 | return TRUE; | |
1498 | } | |
1499 | ||
1500 | /* We convert only to R_X86_64_PC32: | |
1501 | 1. Branch. | |
1502 | 2. R_X86_64_GOTPCREL since we can't modify REX byte. | |
8b43e456 | 1503 | 3. no_overflow is true. |
c175a657 L |
1504 | 4. PIC. |
1505 | */ | |
1506 | to_reloc_pc32 = (opcode == 0xff | |
1507 | || !relocx | |
8b43e456 | 1508 | || no_overflow |
c175a657 L |
1509 | || is_pic); |
1510 | ||
1511 | /* Get the symbol referred to by the reloc. */ | |
1512 | if (h == NULL) | |
1513 | { | |
1514 | Elf_Internal_Sym *isym | |
1515 | = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx); | |
1516 | ||
1517 | /* Skip relocation against undefined symbols. */ | |
1518 | if (isym->st_shndx == SHN_UNDEF) | |
1519 | return TRUE; | |
1520 | ||
c175a657 L |
1521 | if (isym->st_shndx == SHN_ABS) |
1522 | tsec = bfd_abs_section_ptr; | |
1523 | else if (isym->st_shndx == SHN_COMMON) | |
1524 | tsec = bfd_com_section_ptr; | |
1525 | else if (isym->st_shndx == SHN_X86_64_LCOMMON) | |
1526 | tsec = &_bfd_elf_large_com_section; | |
1527 | else | |
1528 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
c175a657 L |
1529 | } |
1530 | else | |
1531 | { | |
1532 | /* Undefined weak symbol is only bound locally in executable | |
1533 | and its reference is resolved as 0 without relocation | |
1534 | overflow. We can only perform this optimization for | |
1535 | GOTPCRELX relocations since we need to modify REX byte. | |
1536 | It is OK convert mov with R_X86_64_GOTPCREL to | |
1537 | R_X86_64_PC32. */ | |
0a27fed7 L |
1538 | bfd_boolean local_ref; |
1539 | struct elf_x86_link_hash_entry *eh = elf_x86_hash_entry (h); | |
1540 | ||
1541 | /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P. */ | |
1542 | local_ref = SYMBOL_REFERENCES_LOCAL_P (link_info, h); | |
c175a657 | 1543 | if ((relocx || opcode == 0x8b) |
0a27fed7 L |
1544 | && (h->root.type == bfd_link_hash_undefweak |
1545 | && !eh->linker_def | |
1546 | && local_ref)) | |
c175a657 L |
1547 | { |
1548 | if (opcode == 0xff) | |
1549 | { | |
1550 | /* Skip for branch instructions since R_X86_64_PC32 | |
1551 | may overflow. */ | |
8b43e456 | 1552 | if (no_overflow) |
c175a657 L |
1553 | return TRUE; |
1554 | } | |
1555 | else if (relocx) | |
1556 | { | |
1557 | /* For non-branch instructions, we can convert to | |
1558 | R_X86_64_32/R_X86_64_32S since we know if there | |
1559 | is a REX byte. */ | |
1560 | to_reloc_pc32 = FALSE; | |
1561 | } | |
1562 | ||
1563 | /* Since we don't know the current PC when PIC is true, | |
1564 | we can't convert to R_X86_64_PC32. */ | |
1565 | if (to_reloc_pc32 && is_pic) | |
1566 | return TRUE; | |
1567 | ||
1568 | goto convert; | |
1569 | } | |
1570 | /* Avoid optimizing GOTPCREL relocations againt _DYNAMIC since | |
1571 | ld.so may use its link-time address. */ | |
cbd0eecf | 1572 | else if (h->start_stop |
0a27fed7 | 1573 | || eh->linker_def |
cbd0eecf L |
1574 | || ((h->def_regular |
1575 | || h->root.type == bfd_link_hash_defined | |
1576 | || h->root.type == bfd_link_hash_defweak) | |
1577 | && h != htab->elf.hdynamic | |
0a27fed7 | 1578 | && local_ref)) |
c175a657 L |
1579 | { |
1580 | /* bfd_link_hash_new or bfd_link_hash_undefined is | |
1581 | set by an assignment in a linker script in | |
cbd0eecf L |
1582 | bfd_elf_record_link_assignment. start_stop is set |
1583 | on __start_SECNAME/__stop_SECNAME which mark section | |
1584 | SECNAME. */ | |
1585 | if (h->start_stop | |
0a27fed7 | 1586 | || eh->linker_def |
cbd0eecf L |
1587 | || (h->def_regular |
1588 | && (h->root.type == bfd_link_hash_new | |
1589 | || h->root.type == bfd_link_hash_undefined | |
1590 | || ((h->root.type == bfd_link_hash_defined | |
1591 | || h->root.type == bfd_link_hash_defweak) | |
1592 | && h->root.u.def.section == bfd_und_section_ptr)))) | |
c175a657 L |
1593 | { |
1594 | /* Skip since R_X86_64_32/R_X86_64_32S may overflow. */ | |
8b43e456 | 1595 | if (no_overflow) |
c175a657 L |
1596 | return TRUE; |
1597 | goto convert; | |
1598 | } | |
1599 | tsec = h->root.u.def.section; | |
c175a657 L |
1600 | } |
1601 | else | |
1602 | return TRUE; | |
1603 | } | |
1604 | ||
2168b268 L |
1605 | /* Don't convert GOTPCREL relocation against large section. */ |
1606 | if (elf_section_data (tsec) != NULL | |
1607 | && (elf_section_flags (tsec) & SHF_X86_64_LARGE) != 0) | |
1608 | return TRUE; | |
1609 | ||
8b43e456 L |
1610 | /* Skip since R_X86_64_PC32/R_X86_64_32/R_X86_64_32S may overflow. */ |
1611 | if (no_overflow) | |
1612 | return TRUE; | |
c175a657 | 1613 | |
dc089072 | 1614 | convert: |
c175a657 L |
1615 | if (opcode == 0xff) |
1616 | { | |
1617 | /* We have "call/jmp *foo@GOTPCREL(%rip)". */ | |
1618 | unsigned int nop; | |
1619 | unsigned int disp; | |
1620 | bfd_vma nop_offset; | |
1621 | ||
1622 | /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to | |
1623 | R_X86_64_PC32. */ | |
1624 | modrm = bfd_get_8 (abfd, contents + roff - 1); | |
1625 | if (modrm == 0x25) | |
1626 | { | |
1627 | /* Convert to "jmp foo nop". */ | |
1628 | modrm = 0xe9; | |
1629 | nop = NOP_OPCODE; | |
1630 | nop_offset = irel->r_offset + 3; | |
1631 | disp = bfd_get_32 (abfd, contents + irel->r_offset); | |
1632 | irel->r_offset -= 1; | |
1633 | bfd_put_32 (abfd, disp, contents + irel->r_offset); | |
1634 | } | |
1635 | else | |
1636 | { | |
0afcef53 L |
1637 | struct elf_x86_link_hash_entry *eh |
1638 | = (struct elf_x86_link_hash_entry *) h; | |
e2cbcd91 | 1639 | |
c175a657 L |
1640 | /* Convert to "nop call foo". ADDR_PREFIX_OPCODE |
1641 | is a nop prefix. */ | |
1642 | modrm = 0xe8; | |
e2cbcd91 L |
1643 | /* To support TLS optimization, always use addr32 prefix for |
1644 | "call *__tls_get_addr@GOTPCREL(%rip)". */ | |
1d4af308 | 1645 | if (eh && eh->tls_get_addr) |
c175a657 | 1646 | { |
e2cbcd91 L |
1647 | nop = 0x67; |
1648 | nop_offset = irel->r_offset - 2; | |
c175a657 L |
1649 | } |
1650 | else | |
e2cbcd91 L |
1651 | { |
1652 | nop = link_info->call_nop_byte; | |
1653 | if (link_info->call_nop_as_suffix) | |
1654 | { | |
1655 | nop_offset = irel->r_offset + 3; | |
1656 | disp = bfd_get_32 (abfd, contents + irel->r_offset); | |
1657 | irel->r_offset -= 1; | |
1658 | bfd_put_32 (abfd, disp, contents + irel->r_offset); | |
1659 | } | |
1660 | else | |
1661 | nop_offset = irel->r_offset - 2; | |
1662 | } | |
c175a657 L |
1663 | } |
1664 | bfd_put_8 (abfd, nop, contents + nop_offset); | |
1665 | bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1); | |
1666 | r_type = R_X86_64_PC32; | |
1667 | } | |
1668 | else | |
1669 | { | |
1670 | unsigned int rex; | |
1671 | unsigned int rex_mask = REX_R; | |
1672 | ||
1673 | if (r_type == R_X86_64_REX_GOTPCRELX) | |
1674 | rex = bfd_get_8 (abfd, contents + roff - 3); | |
1675 | else | |
1676 | rex = 0; | |
1677 | ||
1678 | if (opcode == 0x8b) | |
1679 | { | |
1680 | if (to_reloc_pc32) | |
1681 | { | |
1682 | /* Convert "mov foo@GOTPCREL(%rip), %reg" to | |
1683 | "lea foo(%rip), %reg". */ | |
1684 | opcode = 0x8d; | |
1685 | r_type = R_X86_64_PC32; | |
1686 | } | |
1687 | else | |
1688 | { | |
1689 | /* Convert "mov foo@GOTPCREL(%rip), %reg" to | |
1690 | "mov $foo, %reg". */ | |
1691 | opcode = 0xc7; | |
1692 | modrm = bfd_get_8 (abfd, contents + roff - 1); | |
1693 | modrm = 0xc0 | (modrm & 0x38) >> 3; | |
1694 | if ((rex & REX_W) != 0 | |
1695 | && ABI_64_P (link_info->output_bfd)) | |
1696 | { | |
1697 | /* Keep the REX_W bit in REX byte for LP64. */ | |
1698 | r_type = R_X86_64_32S; | |
1699 | goto rewrite_modrm_rex; | |
1700 | } | |
1701 | else | |
1702 | { | |
1703 | /* If the REX_W bit in REX byte isn't needed, | |
1704 | use R_X86_64_32 and clear the W bit to avoid | |
1705 | sign-extend imm32 to imm64. */ | |
1706 | r_type = R_X86_64_32; | |
1707 | /* Clear the W bit in REX byte. */ | |
1708 | rex_mask |= REX_W; | |
1709 | goto rewrite_modrm_rex; | |
1710 | } | |
1711 | } | |
1712 | } | |
1713 | else | |
1714 | { | |
1715 | /* R_X86_64_PC32 isn't supported. */ | |
1716 | if (to_reloc_pc32) | |
1717 | return TRUE; | |
1718 | ||
1719 | modrm = bfd_get_8 (abfd, contents + roff - 1); | |
1720 | if (opcode == 0x85) | |
1721 | { | |
1722 | /* Convert "test %reg, foo@GOTPCREL(%rip)" to | |
1723 | "test $foo, %reg". */ | |
1724 | modrm = 0xc0 | (modrm & 0x38) >> 3; | |
1725 | opcode = 0xf7; | |
1726 | } | |
1727 | else | |
1728 | { | |
1729 | /* Convert "binop foo@GOTPCREL(%rip), %reg" to | |
1730 | "binop $foo, %reg". */ | |
1731 | modrm = 0xc0 | (modrm & 0x38) >> 3 | (opcode & 0x3c); | |
1732 | opcode = 0x81; | |
1733 | } | |
1734 | ||
1735 | /* Use R_X86_64_32 with 32-bit operand to avoid relocation | |
1736 | overflow when sign-extending imm32 to imm64. */ | |
1737 | r_type = (rex & REX_W) != 0 ? R_X86_64_32S : R_X86_64_32; | |
1738 | ||
1739 | rewrite_modrm_rex: | |
1740 | bfd_put_8 (abfd, modrm, contents + roff - 1); | |
1741 | ||
1742 | if (rex) | |
1743 | { | |
1744 | /* Move the R bit to the B bit in REX byte. */ | |
1745 | rex = (rex & ~rex_mask) | (rex & REX_R) >> 2; | |
1746 | bfd_put_8 (abfd, rex, contents + roff - 3); | |
1747 | } | |
1748 | ||
1749 | /* No addend for R_X86_64_32/R_X86_64_32S relocations. */ | |
1750 | irel->r_addend = 0; | |
1751 | } | |
1752 | ||
1753 | bfd_put_8 (abfd, opcode, contents + roff - 2); | |
1754 | } | |
1755 | ||
6999821f | 1756 | *r_type_p = r_type; |
78984959 L |
1757 | irel->r_info = htab->r_info (r_symndx, |
1758 | r_type | R_X86_64_converted_reloc_bit); | |
c175a657 L |
1759 | |
1760 | *converted = TRUE; | |
1761 | ||
1762 | return TRUE; | |
1763 | } | |
1764 | ||
70256ad8 | 1765 | /* Look through the relocs for a section during the first phase, and |
c434dee6 AJ |
1766 | calculate needed space in the global offset table, procedure |
1767 | linkage table, and dynamic reloc sections. */ | |
70256ad8 | 1768 | |
b34976b6 | 1769 | static bfd_boolean |
351f65ca L |
1770 | elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1771 | asection *sec, | |
1772 | const Elf_Internal_Rela *relocs) | |
70256ad8 | 1773 | { |
0afcef53 | 1774 | struct elf_x86_link_hash_table *htab; |
70256ad8 AJ |
1775 | Elf_Internal_Shdr *symtab_hdr; |
1776 | struct elf_link_hash_entry **sym_hashes; | |
70256ad8 AJ |
1777 | const Elf_Internal_Rela *rel; |
1778 | const Elf_Internal_Rela *rel_end; | |
70256ad8 | 1779 | asection *sreloc; |
bedfd056 | 1780 | bfd_byte *contents; |
5e5e02ae | 1781 | bfd_boolean converted; |
70256ad8 | 1782 | |
0e1862bb | 1783 | if (bfd_link_relocatable (info)) |
b34976b6 | 1784 | return TRUE; |
70256ad8 | 1785 | |
081b1afe L |
1786 | /* Don't do anything special with non-loaded, non-alloced sections. |
1787 | In particular, any relocs in such sections should not affect GOT | |
1788 | and PLT reference counting (ie. we don't allow them to create GOT | |
1789 | or PLT entries), there's no possibility or desire to optimize TLS | |
1790 | relocs, and there's not much point in propagating relocs to shared | |
1791 | libs that the dynamic linker won't relocate. */ | |
1792 | if ((sec->flags & SEC_ALLOC) == 0) | |
1793 | return TRUE; | |
1794 | ||
0afcef53 | 1795 | htab = elf_x86_hash_table (info, X86_64_ELF_DATA); |
4dfe6ac6 | 1796 | if (htab == NULL) |
afd9acee L |
1797 | { |
1798 | sec->check_relocs_failed = 1; | |
1799 | return FALSE; | |
1800 | } | |
4dfe6ac6 | 1801 | |
fe53b4a4 L |
1802 | BFD_ASSERT (is_x86_elf (abfd, htab)); |
1803 | ||
bedfd056 L |
1804 | /* Get the section contents. */ |
1805 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1806 | contents = elf_section_data (sec)->this_hdr.contents; | |
1807 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1808 | { | |
1809 | sec->check_relocs_failed = 1; | |
1810 | return FALSE; | |
1811 | } | |
1812 | ||
0ffa91dd | 1813 | symtab_hdr = &elf_symtab_hdr (abfd); |
70256ad8 | 1814 | sym_hashes = elf_sym_hashes (abfd); |
70256ad8 | 1815 | |
5e5e02ae L |
1816 | converted = FALSE; |
1817 | ||
c434dee6 | 1818 | sreloc = NULL; |
cbe950e9 | 1819 | |
70256ad8 AJ |
1820 | rel_end = relocs + sec->reloc_count; |
1821 | for (rel = relocs; rel < rel_end; rel++) | |
1822 | { | |
bffbf940 | 1823 | unsigned int r_type; |
d42c267e | 1824 | unsigned int r_symndx; |
70256ad8 | 1825 | struct elf_link_hash_entry *h; |
0afcef53 | 1826 | struct elf_x86_link_hash_entry *eh; |
4c544807 L |
1827 | Elf_Internal_Sym *isym; |
1828 | const char *name; | |
06a6a421 | 1829 | bfd_boolean size_reloc; |
6999821f | 1830 | bfd_boolean converted_reloc; |
70256ad8 | 1831 | |
351f65ca L |
1832 | r_symndx = htab->r_sym (rel->r_info); |
1833 | r_type = ELF32_R_TYPE (rel->r_info); | |
c434dee6 AJ |
1834 | |
1835 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
1836 | { | |
695344c0 | 1837 | /* xgettext:c-format */ |
4eca0228 AM |
1838 | _bfd_error_handler (_("%B: bad symbol index: %d"), |
1839 | abfd, r_symndx); | |
afd9acee | 1840 | goto error_return; |
c434dee6 AJ |
1841 | } |
1842 | ||
70256ad8 | 1843 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1844 | { |
1845 | /* A local symbol. */ | |
c2e61a4e L |
1846 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1847 | abfd, r_symndx); | |
1848 | if (isym == NULL) | |
afd9acee | 1849 | goto error_return; |
c25bc9fc L |
1850 | |
1851 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
351f65ca | 1852 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c25bc9fc | 1853 | { |
0afcef53 L |
1854 | h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel, |
1855 | TRUE); | |
c25bc9fc | 1856 | if (h == NULL) |
afd9acee | 1857 | goto error_return; |
6bbec505 | 1858 | |
c25bc9fc | 1859 | /* Fake a STT_GNU_IFUNC symbol. */ |
6322e5c5 L |
1860 | h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr, |
1861 | isym, NULL); | |
c25bc9fc L |
1862 | h->type = STT_GNU_IFUNC; |
1863 | h->def_regular = 1; | |
1864 | h->ref_regular = 1; | |
1865 | h->forced_local = 1; | |
1866 | h->root.type = bfd_link_hash_defined; | |
1867 | } | |
1868 | else | |
1869 | h = NULL; | |
1870 | } | |
70256ad8 | 1871 | else |
71cb9464 | 1872 | { |
4c544807 | 1873 | isym = NULL; |
71cb9464 L |
1874 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1875 | while (h->root.type == bfd_link_hash_indirect | |
1876 | || h->root.type == bfd_link_hash_warning) | |
1877 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c25bc9fc | 1878 | } |
cbe950e9 | 1879 | |
d1534d16 L |
1880 | /* Check invalid x32 relocations. */ |
1881 | if (!ABI_64_P (abfd)) | |
1882 | switch (r_type) | |
1883 | { | |
1884 | default: | |
1885 | break; | |
1886 | ||
d1534d16 L |
1887 | case R_X86_64_DTPOFF64: |
1888 | case R_X86_64_TPOFF64: | |
1889 | case R_X86_64_PC64: | |
1890 | case R_X86_64_GOTOFF64: | |
1891 | case R_X86_64_GOT64: | |
1892 | case R_X86_64_GOTPCREL64: | |
1893 | case R_X86_64_GOTPC64: | |
1894 | case R_X86_64_GOTPLT64: | |
1895 | case R_X86_64_PLTOFF64: | |
1896 | { | |
1897 | if (h) | |
1898 | name = h->root.root.string; | |
1899 | else | |
1900 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1901 | NULL); | |
4eca0228 | 1902 | _bfd_error_handler |
695344c0 | 1903 | /* xgettext:c-format */ |
d1534d16 L |
1904 | (_("%B: relocation %s against symbol `%s' isn't " |
1905 | "supported in x32 mode"), abfd, | |
1906 | x86_64_elf_howto_table[r_type].name, name); | |
1907 | bfd_set_error (bfd_error_bad_value); | |
afd9acee | 1908 | goto error_return; |
d1534d16 L |
1909 | } |
1910 | break; | |
1911 | } | |
1912 | ||
c25bc9fc L |
1913 | if (h != NULL) |
1914 | { | |
ad1e85de L |
1915 | /* It is referenced by a non-shared object. */ |
1916 | h->ref_regular = 1; | |
bc4e12de | 1917 | h->root.non_ir_ref_regular = 1; |
13a2df29 L |
1918 | |
1919 | if (h->type == STT_GNU_IFUNC) | |
1920 | elf_tdata (info->output_bfd)->has_gnu_symbols | |
1921 | |= elf_gnu_symbol_ifunc; | |
71cb9464 | 1922 | } |
70256ad8 | 1923 | |
6999821f L |
1924 | converted_reloc = FALSE; |
1925 | if ((r_type == R_X86_64_GOTPCREL | |
1926 | || r_type == R_X86_64_GOTPCRELX | |
1927 | || r_type == R_X86_64_REX_GOTPCRELX) | |
1928 | && (h == NULL || h->type != STT_GNU_IFUNC)) | |
1929 | { | |
1930 | Elf_Internal_Rela *irel = (Elf_Internal_Rela *) rel; | |
1931 | if (!elf_x86_64_convert_load_reloc (abfd, contents, &r_type, | |
1932 | irel, h, &converted_reloc, | |
1933 | info)) | |
1934 | goto error_return; | |
5e5e02ae L |
1935 | |
1936 | if (converted_reloc) | |
1937 | converted = TRUE; | |
6999821f L |
1938 | } |
1939 | ||
bedfd056 | 1940 | if (! elf_x86_64_tls_transition (info, abfd, sec, contents, |
351f65ca L |
1941 | symtab_hdr, sym_hashes, |
1942 | &r_type, GOT_UNKNOWN, | |
bedfd056 | 1943 | rel, rel_end, h, r_symndx, FALSE)) |
afd9acee | 1944 | goto error_return; |
142411ca | 1945 | |
0afcef53 | 1946 | eh = (struct elf_x86_link_hash_entry *) h; |
bffbf940 | 1947 | switch (r_type) |
70256ad8 | 1948 | { |
bffbf940 | 1949 | case R_X86_64_TLSLD: |
0afcef53 | 1950 | htab->tls_ld_or_ldm_got.refcount += 1; |
bffbf940 JJ |
1951 | goto create_got; |
1952 | ||
1953 | case R_X86_64_TPOFF32: | |
0e1862bb | 1954 | if (!bfd_link_executable (info) && ABI_64_P (abfd)) |
aab921ad | 1955 | return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym, |
338c190a | 1956 | &x86_64_elf_howto_table[r_type]); |
aec6b87e L |
1957 | if (eh != NULL) |
1958 | eh->has_got_reloc = 1; | |
bffbf940 | 1959 | break; |
c434dee6 | 1960 | |
bffbf940 | 1961 | case R_X86_64_GOTTPOFF: |
0e1862bb | 1962 | if (!bfd_link_executable (info)) |
bffbf940 JJ |
1963 | info->flags |= DF_STATIC_TLS; |
1964 | /* Fall through */ | |
70256ad8 | 1965 | |
bffbf940 JJ |
1966 | case R_X86_64_GOT32: |
1967 | case R_X86_64_GOTPCREL: | |
56ceb5b5 L |
1968 | case R_X86_64_GOTPCRELX: |
1969 | case R_X86_64_REX_GOTPCRELX: | |
bffbf940 | 1970 | case R_X86_64_TLSGD: |
7b81dfbb AJ |
1971 | case R_X86_64_GOT64: |
1972 | case R_X86_64_GOTPCREL64: | |
1973 | case R_X86_64_GOTPLT64: | |
67a4f2b7 AO |
1974 | case R_X86_64_GOTPC32_TLSDESC: |
1975 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 JJ |
1976 | /* This symbol requires a global offset table entry. */ |
1977 | { | |
1978 | int tls_type, old_tls_type; | |
1979 | ||
1980 | switch (r_type) | |
1981 | { | |
1982 | default: tls_type = GOT_NORMAL; break; | |
1983 | case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break; | |
1984 | case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break; | |
67a4f2b7 AO |
1985 | case R_X86_64_GOTPC32_TLSDESC: |
1986 | case R_X86_64_TLSDESC_CALL: | |
1987 | tls_type = GOT_TLS_GDESC; break; | |
bffbf940 JJ |
1988 | } |
1989 | ||
1990 | if (h != NULL) | |
1991 | { | |
1992 | h->got.refcount += 1; | |
aec6b87e | 1993 | old_tls_type = eh->tls_type; |
bffbf940 JJ |
1994 | } |
1995 | else | |
1996 | { | |
1997 | bfd_signed_vma *local_got_refcounts; | |
1998 | ||
1999 | /* This is a global offset table entry for a local symbol. */ | |
2000 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
2001 | if (local_got_refcounts == NULL) | |
2002 | { | |
2003 | bfd_size_type size; | |
2004 | ||
2005 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
2006 | size *= sizeof (bfd_signed_vma) |
2007 | + sizeof (bfd_vma) + sizeof (char); | |
bffbf940 JJ |
2008 | local_got_refcounts = ((bfd_signed_vma *) |
2009 | bfd_zalloc (abfd, size)); | |
2010 | if (local_got_refcounts == NULL) | |
afd9acee | 2011 | goto error_return; |
bffbf940 | 2012 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
0afcef53 | 2013 | elf_x86_local_tlsdesc_gotent (abfd) |
67a4f2b7 | 2014 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); |
0afcef53 | 2015 | elf_x86_local_got_tls_type (abfd) |
67a4f2b7 | 2016 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
bffbf940 JJ |
2017 | } |
2018 | local_got_refcounts[r_symndx] += 1; | |
2019 | old_tls_type | |
0afcef53 | 2020 | = elf_x86_local_got_tls_type (abfd) [r_symndx]; |
bffbf940 JJ |
2021 | } |
2022 | ||
2023 | /* If a TLS symbol is accessed using IE at least once, | |
2024 | there is no point to use dynamic model for it. */ | |
2025 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN | |
67a4f2b7 AO |
2026 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
2027 | || tls_type != GOT_TLS_IE)) | |
bffbf940 | 2028 | { |
67a4f2b7 | 2029 | if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type)) |
bffbf940 | 2030 | tls_type = old_tls_type; |
67a4f2b7 AO |
2031 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
2032 | && GOT_TLS_GD_ANY_P (tls_type)) | |
2033 | tls_type |= old_tls_type; | |
bffbf940 JJ |
2034 | else |
2035 | { | |
09a24cbf | 2036 | if (h) |
4c544807 L |
2037 | name = h->root.root.string; |
2038 | else | |
2039 | name = bfd_elf_sym_name (abfd, symtab_hdr, | |
2040 | isym, NULL); | |
4eca0228 | 2041 | _bfd_error_handler |
695344c0 | 2042 | /* xgettext:c-format */ |
63a5468a AM |
2043 | (_("%B: '%s' accessed both as normal and" |
2044 | " thread local symbol"), | |
4c544807 | 2045 | abfd, name); |
68c4a57e | 2046 | bfd_set_error (bfd_error_bad_value); |
afd9acee | 2047 | goto error_return; |
bffbf940 JJ |
2048 | } |
2049 | } | |
2050 | ||
2051 | if (old_tls_type != tls_type) | |
2052 | { | |
aec6b87e L |
2053 | if (eh != NULL) |
2054 | eh->tls_type = tls_type; | |
bffbf940 | 2055 | else |
0afcef53 | 2056 | elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type; |
bffbf940 JJ |
2057 | } |
2058 | } | |
c434dee6 AJ |
2059 | /* Fall through */ |
2060 | ||
d6ab8113 JB |
2061 | case R_X86_64_GOTOFF64: |
2062 | case R_X86_64_GOTPC32: | |
7b81dfbb | 2063 | case R_X86_64_GOTPC64: |
bffbf940 | 2064 | create_got: |
aec6b87e L |
2065 | if (eh != NULL) |
2066 | eh->has_got_reloc = 1; | |
70256ad8 AJ |
2067 | break; |
2068 | ||
2069 | case R_X86_64_PLT32: | |
c3320543 | 2070 | case R_X86_64_PLT32_BND: |
70256ad8 | 2071 | /* This symbol requires a procedure linkage table entry. We |
407443a3 AJ |
2072 | actually build the entry in adjust_dynamic_symbol, |
2073 | because this might be a case of linking PIC code which is | |
2074 | never referenced by a dynamic object, in which case we | |
2075 | don't need to generate a procedure linkage table entry | |
2076 | after all. */ | |
70256ad8 AJ |
2077 | |
2078 | /* If this is a local symbol, we resolve it directly without | |
407443a3 | 2079 | creating a procedure linkage table entry. */ |
70256ad8 AJ |
2080 | if (h == NULL) |
2081 | continue; | |
2082 | ||
aec6b87e | 2083 | eh->has_got_reloc = 1; |
f5385ebf | 2084 | h->needs_plt = 1; |
51b64d56 | 2085 | h->plt.refcount += 1; |
70256ad8 AJ |
2086 | break; |
2087 | ||
7b81dfbb AJ |
2088 | case R_X86_64_PLTOFF64: |
2089 | /* This tries to form the 'address' of a function relative | |
2090 | to GOT. For global symbols we need a PLT entry. */ | |
2091 | if (h != NULL) | |
2092 | { | |
2093 | h->needs_plt = 1; | |
2094 | h->plt.refcount += 1; | |
2095 | } | |
2096 | goto create_got; | |
2097 | ||
6a3e1bae L |
2098 | case R_X86_64_SIZE32: |
2099 | case R_X86_64_SIZE64: | |
06a6a421 | 2100 | size_reloc = TRUE; |
6a3e1bae L |
2101 | goto do_size; |
2102 | ||
248775ba L |
2103 | case R_X86_64_32: |
2104 | if (!ABI_64_P (abfd)) | |
2105 | goto pointer; | |
1a0670f3 | 2106 | /* Fall through. */ |
cc78d0af AJ |
2107 | case R_X86_64_8: |
2108 | case R_X86_64_16: | |
70256ad8 | 2109 | case R_X86_64_32S: |
338c190a L |
2110 | /* Check relocation overflow as these relocs may lead to |
2111 | run-time relocation overflow. Don't error out for | |
1b71fb54 | 2112 | sections we don't care about, such as debug sections or |
338c190a | 2113 | when relocation overflow check is disabled. */ |
4c10bbaa | 2114 | if (!info->no_reloc_overflow_check |
6999821f | 2115 | && !converted_reloc |
338c190a L |
2116 | && (bfd_link_pic (info) |
2117 | || (bfd_link_executable (info) | |
2118 | && h != NULL | |
2119 | && !h->def_regular | |
2120 | && h->def_dynamic | |
081b1afe | 2121 | && (sec->flags & SEC_READONLY) == 0))) |
aab921ad | 2122 | return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym, |
338c190a | 2123 | &x86_64_elf_howto_table[r_type]); |
1b71fb54 AJ |
2124 | /* Fall through. */ |
2125 | ||
c434dee6 AJ |
2126 | case R_X86_64_PC8: |
2127 | case R_X86_64_PC16: | |
70256ad8 | 2128 | case R_X86_64_PC32: |
c3320543 | 2129 | case R_X86_64_PC32_BND: |
d6ab8113 | 2130 | case R_X86_64_PC64: |
1b71fb54 | 2131 | case R_X86_64_64: |
248775ba | 2132 | pointer: |
aec6b87e L |
2133 | if (eh != NULL && (sec->flags & SEC_CODE) != 0) |
2134 | eh->has_non_got_reloc = 1; | |
bf52d7c7 L |
2135 | /* We are called after all symbols have been resolved. Only |
2136 | relocation against STT_GNU_IFUNC symbol must go through | |
2137 | PLT. */ | |
d1ed1c7d L |
2138 | if (h != NULL |
2139 | && (bfd_link_executable (info) | |
bf52d7c7 | 2140 | || h->type == STT_GNU_IFUNC)) |
c434dee6 AJ |
2141 | { |
2142 | /* If this reloc is in a read-only section, we might | |
2143 | need a copy reloc. We can't check reliably at this | |
2144 | stage whether the section is read-only, as input | |
2145 | sections have not yet been mapped to output sections. | |
2146 | Tentatively set the flag for now, and correct in | |
2147 | adjust_dynamic_symbol. */ | |
f5385ebf | 2148 | h->non_got_ref = 1; |
c434dee6 | 2149 | |
233cc9c1 L |
2150 | /* We may need a .plt entry if the symbol is a function |
2151 | defined in a shared lib or is a STT_GNU_IFUNC function | |
2152 | referenced from the code or read-only section. */ | |
34bb2571 L |
2153 | if (!h->def_regular |
2154 | || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0) | |
233cc9c1 L |
2155 | h->plt.refcount += 1; |
2156 | ||
5db4f0d3 L |
2157 | if (r_type == R_X86_64_PC32) |
2158 | { | |
2159 | /* Since something like ".long foo - ." may be used | |
2160 | as pointer, make sure that PLT is used if foo is | |
2161 | a function defined in a shared library. */ | |
2162 | if ((sec->flags & SEC_CODE) == 0) | |
2163 | h->pointer_equality_needed = 1; | |
2164 | } | |
2165 | else if (r_type != R_X86_64_PC32_BND | |
2166 | && r_type != R_X86_64_PC64) | |
04ebc307 L |
2167 | { |
2168 | h->pointer_equality_needed = 1; | |
2169 | /* At run-time, R_X86_64_64 can be resolved for both | |
2170 | x86-64 and x32. But R_X86_64_32 and R_X86_64_32S | |
2171 | can only be resolved for x32. */ | |
2172 | if ((sec->flags & SEC_READONLY) == 0 | |
2173 | && (r_type == R_X86_64_64 | |
2174 | || (!ABI_64_P (abfd) | |
2175 | && (r_type == R_X86_64_32 | |
2176 | || r_type == R_X86_64_32S)))) | |
aec6b87e | 2177 | eh->func_pointer_refcount += 1; |
04ebc307 | 2178 | } |
c434dee6 | 2179 | } |
70256ad8 | 2180 | |
06a6a421 | 2181 | size_reloc = FALSE; |
6a3e1bae | 2182 | do_size: |
daf1c414 L |
2183 | if (NEED_DYNAMIC_RELOCATION_P (info, h, sec, r_type, |
2184 | htab->pointer_r_type)) | |
70256ad8 | 2185 | { |
e03a8ed8 L |
2186 | struct elf_dyn_relocs *p; |
2187 | struct elf_dyn_relocs **head; | |
c434dee6 AJ |
2188 | |
2189 | /* We must copy these reloc types into the output file. | |
2190 | Create a reloc section in dynobj and make room for | |
2191 | this reloc. */ | |
70256ad8 AJ |
2192 | if (sreloc == NULL) |
2193 | { | |
83bac4b0 | 2194 | sreloc = _bfd_elf_make_dynamic_reloc_section |
82e96e07 L |
2195 | (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2, |
2196 | abfd, /*rela?*/ TRUE); | |
70256ad8 | 2197 | |
70256ad8 | 2198 | if (sreloc == NULL) |
afd9acee | 2199 | goto error_return; |
70256ad8 AJ |
2200 | } |
2201 | ||
c434dee6 AJ |
2202 | /* If this is a global symbol, we count the number of |
2203 | relocations we need for this symbol. */ | |
2204 | if (h != NULL) | |
aec6b87e | 2205 | head = &eh->dyn_relocs; |
c434dee6 AJ |
2206 | else |
2207 | { | |
2208 | /* Track dynamic relocs needed for local syms too. | |
2209 | We really need local syms available to do this | |
2210 | easily. Oh well. */ | |
c434dee6 | 2211 | asection *s; |
87d72d41 | 2212 | void **vpp; |
87d72d41 AM |
2213 | |
2214 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
2215 | abfd, r_symndx); | |
2216 | if (isym == NULL) | |
afd9acee | 2217 | goto error_return; |
87d72d41 AM |
2218 | |
2219 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
c434dee6 | 2220 | if (s == NULL) |
87d72d41 | 2221 | s = sec; |
70256ad8 | 2222 | |
e81d3500 DD |
2223 | /* Beware of type punned pointers vs strict aliasing |
2224 | rules. */ | |
2225 | vpp = &(elf_section_data (s)->local_dynrel); | |
e03a8ed8 | 2226 | head = (struct elf_dyn_relocs **)vpp; |
c434dee6 | 2227 | } |
70256ad8 | 2228 | |
c434dee6 AJ |
2229 | p = *head; |
2230 | if (p == NULL || p->sec != sec) | |
2231 | { | |
2232 | bfd_size_type amt = sizeof *p; | |
d8045f23 | 2233 | |
e03a8ed8 | 2234 | p = ((struct elf_dyn_relocs *) |
c434dee6 | 2235 | bfd_alloc (htab->elf.dynobj, amt)); |
70256ad8 | 2236 | if (p == NULL) |
afd9acee | 2237 | goto error_return; |
c434dee6 AJ |
2238 | p->next = *head; |
2239 | *head = p; | |
2240 | p->sec = sec; | |
2241 | p->count = 0; | |
2242 | p->pc_count = 0; | |
70256ad8 | 2243 | } |
c434dee6 AJ |
2244 | |
2245 | p->count += 1; | |
06a6a421 | 2246 | /* Count size relocation as PC-relative relocation. */ |
daf1c414 | 2247 | if (X86_PCREL_TYPE_P (r_type) || size_reloc) |
c434dee6 | 2248 | p->pc_count += 1; |
70256ad8 AJ |
2249 | } |
2250 | break; | |
fe4770f4 AJ |
2251 | |
2252 | /* This relocation describes the C++ object vtable hierarchy. | |
2253 | Reconstruct it for later use during GC. */ | |
2254 | case R_X86_64_GNU_VTINHERIT: | |
c152c796 | 2255 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
afd9acee | 2256 | goto error_return; |
fe4770f4 AJ |
2257 | break; |
2258 | ||
2259 | /* This relocation describes which C++ vtable entries are actually | |
2260 | used. Record for later use during GC. */ | |
2261 | case R_X86_64_GNU_VTENTRY: | |
d17e0c6e JB |
2262 | BFD_ASSERT (h != NULL); |
2263 | if (h != NULL | |
2264 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
afd9acee | 2265 | goto error_return; |
fe4770f4 | 2266 | break; |
c434dee6 AJ |
2267 | |
2268 | default: | |
2269 | break; | |
70256ad8 AJ |
2270 | } |
2271 | } | |
2272 | ||
bedfd056 L |
2273 | if (elf_section_data (sec)->this_hdr.contents != contents) |
2274 | { | |
5e5e02ae | 2275 | if (!converted && !info->keep_memory) |
bedfd056 L |
2276 | free (contents); |
2277 | else | |
2278 | { | |
5e5e02ae L |
2279 | /* Cache the section contents for elf_link_input_bfd if any |
2280 | load is converted or --no-keep-memory isn't used. */ | |
bedfd056 L |
2281 | elf_section_data (sec)->this_hdr.contents = contents; |
2282 | } | |
2283 | } | |
2284 | ||
5e5e02ae L |
2285 | /* Cache relocations if any load is converted. */ |
2286 | if (elf_section_data (sec)->relocs != relocs && converted) | |
2287 | elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs; | |
2288 | ||
b34976b6 | 2289 | return TRUE; |
afd9acee L |
2290 | |
2291 | error_return: | |
bedfd056 L |
2292 | if (elf_section_data (sec)->this_hdr.contents != contents) |
2293 | free (contents); | |
afd9acee L |
2294 | sec->check_relocs_failed = 1; |
2295 | return FALSE; | |
70256ad8 AJ |
2296 | } |
2297 | ||
bffbf940 JJ |
2298 | /* Return the relocation value for @tpoff relocation |
2299 | if STT_TLS virtual address is ADDRESS. */ | |
2300 | ||
2301 | static bfd_vma | |
351f65ca | 2302 | elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address) |
bffbf940 | 2303 | { |
e1918d23 | 2304 | struct elf_link_hash_table *htab = elf_hash_table (info); |
7dc98aea RO |
2305 | const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd); |
2306 | bfd_vma static_tls_size; | |
bffbf940 JJ |
2307 | |
2308 | /* If tls_segment is NULL, we should have signalled an error already. */ | |
e1918d23 | 2309 | if (htab->tls_sec == NULL) |
bffbf940 | 2310 | return 0; |
7dc98aea RO |
2311 | |
2312 | /* Consider special static TLS alignment requirements. */ | |
2313 | static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment); | |
2314 | return address - static_tls_size - htab->tls_sec->vma; | |
bffbf940 JJ |
2315 | } |
2316 | ||
90f487df L |
2317 | /* Is the instruction before OFFSET in CONTENTS a 32bit relative |
2318 | branch? */ | |
2319 | ||
2320 | static bfd_boolean | |
2321 | is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset) | |
2322 | { | |
2323 | /* Opcode Instruction | |
2324 | 0xe8 call | |
2325 | 0xe9 jump | |
2326 | 0x0f 0x8x conditional jump */ | |
2327 | return ((offset > 0 | |
2328 | && (contents [offset - 1] == 0xe8 | |
2329 | || contents [offset - 1] == 0xe9)) | |
2330 | || (offset > 1 | |
2331 | && contents [offset - 2] == 0x0f | |
2332 | && (contents [offset - 1] & 0xf0) == 0x80)); | |
2333 | } | |
2334 | ||
8d88c4ca NC |
2335 | /* Relocate an x86_64 ELF section. */ |
2336 | ||
b34976b6 | 2337 | static bfd_boolean |
351f65ca L |
2338 | elf_x86_64_relocate_section (bfd *output_bfd, |
2339 | struct bfd_link_info *info, | |
2340 | bfd *input_bfd, | |
2341 | asection *input_section, | |
2342 | bfd_byte *contents, | |
2343 | Elf_Internal_Rela *relocs, | |
2344 | Elf_Internal_Sym *local_syms, | |
2345 | asection **local_sections) | |
8d88c4ca | 2346 | { |
0afcef53 | 2347 | struct elf_x86_link_hash_table *htab; |
8d88c4ca NC |
2348 | Elf_Internal_Shdr *symtab_hdr; |
2349 | struct elf_link_hash_entry **sym_hashes; | |
2350 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 2351 | bfd_vma *local_tlsdesc_gotents; |
c434dee6 | 2352 | Elf_Internal_Rela *rel; |
60f2e42e | 2353 | Elf_Internal_Rela *wrel; |
8d88c4ca | 2354 | Elf_Internal_Rela *relend; |
38b12349 | 2355 | unsigned int plt_entry_size; |
8d88c4ca | 2356 | |
338c190a L |
2357 | /* Skip if check_relocs failed. */ |
2358 | if (input_section->check_relocs_failed) | |
2359 | return FALSE; | |
2360 | ||
0afcef53 | 2361 | htab = elf_x86_hash_table (info, X86_64_ELF_DATA); |
4dfe6ac6 NC |
2362 | if (htab == NULL) |
2363 | return FALSE; | |
fe53b4a4 L |
2364 | |
2365 | BFD_ASSERT (is_x86_elf (input_bfd, htab)); | |
2366 | ||
765e526c | 2367 | plt_entry_size = htab->plt.plt_entry_size; |
0ffa91dd | 2368 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
8d88c4ca NC |
2369 | sym_hashes = elf_sym_hashes (input_bfd); |
2370 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
0afcef53 | 2371 | local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd); |
8d88c4ca | 2372 | |
0afcef53 | 2373 | _bfd_x86_elf_set_tls_module_base (info); |
9f03412a | 2374 | |
60f2e42e | 2375 | rel = wrel = relocs; |
8d88c4ca | 2376 | relend = relocs + input_section->reloc_count; |
60f2e42e | 2377 | for (; rel < relend; wrel++, rel++) |
8d88c4ca | 2378 | { |
419414ea | 2379 | unsigned int r_type, r_type_tls; |
8d88c4ca NC |
2380 | reloc_howto_type *howto; |
2381 | unsigned long r_symndx; | |
2382 | struct elf_link_hash_entry *h; | |
0afcef53 | 2383 | struct elf_x86_link_hash_entry *eh; |
8d88c4ca NC |
2384 | Elf_Internal_Sym *sym; |
2385 | asection *sec; | |
0ff2b86e | 2386 | bfd_vma off, offplt, plt_offset; |
8d88c4ca | 2387 | bfd_vma relocation; |
b34976b6 | 2388 | bfd_boolean unresolved_reloc; |
8d88c4ca | 2389 | bfd_reloc_status_type r; |
bffbf940 | 2390 | int tls_type; |
0ff2b86e | 2391 | asection *base_got, *resolved_plt; |
1788fc08 | 2392 | bfd_vma st_size; |
aec6b87e | 2393 | bfd_boolean resolved_to_zero; |
9e9821dd | 2394 | bfd_boolean relative_reloc; |
78984959 | 2395 | bfd_boolean converted_reloc; |
8d88c4ca | 2396 | |
351f65ca | 2397 | r_type = ELF32_R_TYPE (rel->r_info); |
fe4770f4 AJ |
2398 | if (r_type == (int) R_X86_64_GNU_VTINHERIT |
2399 | || r_type == (int) R_X86_64_GNU_VTENTRY) | |
18954b29 L |
2400 | { |
2401 | if (wrel != rel) | |
2402 | *wrel = *rel; | |
2403 | continue; | |
2404 | } | |
8d88c4ca | 2405 | |
78984959 L |
2406 | converted_reloc = (r_type & R_X86_64_converted_reloc_bit) != 0; |
2407 | r_type &= ~R_X86_64_converted_reloc_bit; | |
2408 | ||
9911c0fc | 2409 | if (r_type >= (int) R_X86_64_standard) |
47aeb64c | 2410 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); |
8d88c4ca | 2411 | |
d7921315 | 2412 | if (r_type != (int) R_X86_64_32 |
eed180f8 | 2413 | || ABI_64_P (output_bfd)) |
d7921315 L |
2414 | howto = x86_64_elf_howto_table + r_type; |
2415 | else | |
2416 | howto = (x86_64_elf_howto_table | |
2417 | + ARRAY_SIZE (x86_64_elf_howto_table) - 1); | |
351f65ca | 2418 | r_symndx = htab->r_sym (rel->r_info); |
8d88c4ca NC |
2419 | h = NULL; |
2420 | sym = NULL; | |
2421 | sec = NULL; | |
b34976b6 | 2422 | unresolved_reloc = FALSE; |
8d88c4ca | 2423 | if (r_symndx < symtab_hdr->sh_info) |
8da6118f KH |
2424 | { |
2425 | sym = local_syms + r_symndx; | |
2426 | sec = local_sections[r_symndx]; | |
c434dee6 | 2427 | |
c25bc9fc L |
2428 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, |
2429 | &sec, rel); | |
1788fc08 | 2430 | st_size = sym->st_size; |
c25bc9fc L |
2431 | |
2432 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 2433 | if (!bfd_link_relocatable (info) |
351f65ca | 2434 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
c25bc9fc | 2435 | { |
0afcef53 L |
2436 | h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd, |
2437 | rel, FALSE); | |
c25bc9fc L |
2438 | if (h == NULL) |
2439 | abort (); | |
2440 | ||
eed180f8 | 2441 | /* Set STT_GNU_IFUNC symbol value. */ |
c25bc9fc L |
2442 | h->root.u.def.value = sym->st_value; |
2443 | h->root.u.def.section = sec; | |
2444 | } | |
8da6118f | 2445 | } |
8d88c4ca | 2446 | else |
8da6118f | 2447 | { |
c9736ba0 | 2448 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 2449 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
c434dee6 | 2450 | |
b2a8e766 AM |
2451 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2452 | r_symndx, symtab_hdr, sym_hashes, | |
2453 | h, sec, relocation, | |
62d887d4 | 2454 | unresolved_reloc, warned, ignored); |
1788fc08 | 2455 | st_size = h->size; |
8da6118f | 2456 | } |
ab96bf03 | 2457 | |
dbaa2011 | 2458 | if (sec != NULL && discarded_section (sec)) |
60f2e42e L |
2459 | { |
2460 | _bfd_clear_contents (howto, input_bfd, input_section, | |
2461 | contents + rel->r_offset); | |
2462 | wrel->r_offset = rel->r_offset; | |
2463 | wrel->r_info = 0; | |
2464 | wrel->r_addend = 0; | |
2465 | ||
2466 | /* For ld -r, remove relocations in debug sections against | |
2467 | sections defined in discarded sections. Not done for | |
2468 | eh_frame editing code expects to be present. */ | |
2469 | if (bfd_link_relocatable (info) | |
2470 | && (input_section->flags & SEC_DEBUGGING)) | |
2471 | wrel--; | |
2472 | ||
2473 | continue; | |
2474 | } | |
ab96bf03 | 2475 | |
0e1862bb | 2476 | if (bfd_link_relocatable (info)) |
2d5da473 L |
2477 | { |
2478 | if (wrel != rel) | |
2479 | *wrel = *rel; | |
2480 | continue; | |
2481 | } | |
ab96bf03 | 2482 | |
1788fc08 | 2483 | if (rel->r_addend == 0 && !ABI_64_P (output_bfd)) |
64d25c44 | 2484 | { |
1788fc08 L |
2485 | if (r_type == R_X86_64_64) |
2486 | { | |
2487 | /* For x32, treat R_X86_64_64 like R_X86_64_32 and | |
2488 | zero-extend it to 64bit if addend is zero. */ | |
2489 | r_type = R_X86_64_32; | |
2490 | memset (contents + rel->r_offset + 4, 0, 4); | |
2491 | } | |
2492 | else if (r_type == R_X86_64_SIZE64) | |
2493 | { | |
2494 | /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and | |
2495 | zero-extend it to 64bit if addend is zero. */ | |
2496 | r_type = R_X86_64_SIZE32; | |
2497 | memset (contents + rel->r_offset + 4, 0, 4); | |
2498 | } | |
64d25c44 L |
2499 | } |
2500 | ||
0afcef53 | 2501 | eh = (struct elf_x86_link_hash_entry *) h; |
0ff2b86e | 2502 | |
cbe950e9 L |
2503 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
2504 | it here if it is defined in a non-shared object. */ | |
2505 | if (h != NULL | |
2506 | && h->type == STT_GNU_IFUNC | |
2507 | && h->def_regular) | |
2508 | { | |
cbe950e9 | 2509 | bfd_vma plt_index; |
4c544807 | 2510 | const char *name; |
cbe950e9 | 2511 | |
97dc35c8 L |
2512 | if ((input_section->flags & SEC_ALLOC) == 0) |
2513 | { | |
2514 | /* Dynamic relocs are not propagated for SEC_DEBUGGING | |
2515 | sections because such sections are not SEC_ALLOC and | |
2516 | thus ld.so will not process them. */ | |
2517 | if ((input_section->flags & SEC_DEBUGGING) != 0) | |
0eace210 | 2518 | continue; |
97dc35c8 L |
2519 | abort (); |
2520 | } | |
233cc9c1 L |
2521 | |
2522 | switch (r_type) | |
2523 | { | |
2524 | default: | |
2525 | break; | |
2526 | ||
2527 | case R_X86_64_GOTPCREL: | |
2528 | case R_X86_64_GOTPCRELX: | |
2529 | case R_X86_64_REX_GOTPCRELX: | |
2530 | case R_X86_64_GOTPCREL64: | |
2531 | base_got = htab->elf.sgot; | |
2532 | off = h->got.offset; | |
2533 | ||
2534 | if (base_got == NULL) | |
2535 | abort (); | |
2536 | ||
2537 | if (off == (bfd_vma) -1) | |
2538 | { | |
2539 | /* We can't use h->got.offset here to save state, or | |
2540 | even just remember the offset, as finish_dynamic_symbol | |
2541 | would use that as offset into .got. */ | |
2542 | ||
2543 | if (h->plt.offset == (bfd_vma) -1) | |
2544 | abort (); | |
2545 | ||
2546 | if (htab->elf.splt != NULL) | |
2547 | { | |
38b12349 | 2548 | plt_index = (h->plt.offset / plt_entry_size |
765e526c | 2549 | - htab->plt.has_plt0); |
233cc9c1 L |
2550 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
2551 | base_got = htab->elf.sgotplt; | |
2552 | } | |
2553 | else | |
2554 | { | |
2555 | plt_index = h->plt.offset / plt_entry_size; | |
2556 | off = plt_index * GOT_ENTRY_SIZE; | |
2557 | base_got = htab->elf.igotplt; | |
2558 | } | |
2559 | ||
2560 | if (h->dynindx == -1 | |
2561 | || h->forced_local | |
2562 | || info->symbolic) | |
2563 | { | |
2564 | /* This references the local defitionion. We must | |
2565 | initialize this entry in the global offset table. | |
2566 | Since the offset must always be a multiple of 8, | |
2567 | we use the least significant bit to record | |
2568 | whether we have initialized it already. | |
2569 | ||
2570 | When doing a dynamic link, we create a .rela.got | |
2571 | relocation entry to initialize the value. This | |
2572 | is done in the finish_dynamic_symbol routine. */ | |
2573 | if ((off & 1) != 0) | |
2574 | off &= ~1; | |
2575 | else | |
2576 | { | |
2577 | bfd_put_64 (output_bfd, relocation, | |
2578 | base_got->contents + off); | |
2579 | /* Note that this is harmless for the GOTPLT64 | |
2580 | case, as -1 | 1 still is -1. */ | |
2581 | h->got.offset |= 1; | |
2582 | } | |
2583 | } | |
2584 | } | |
2585 | ||
2586 | relocation = (base_got->output_section->vma | |
2587 | + base_got->output_offset + off); | |
2588 | ||
2589 | goto do_relocation; | |
2590 | } | |
2591 | ||
2592 | if (h->plt.offset == (bfd_vma) -1) | |
2593 | { | |
2594 | /* Handle static pointers of STT_GNU_IFUNC symbols. */ | |
2595 | if (r_type == htab->pointer_r_type | |
2596 | && (input_section->flags & SEC_CODE) == 0) | |
2597 | goto do_ifunc_pointer; | |
2598 | goto bad_ifunc_reloc; | |
2599 | } | |
cbe950e9 L |
2600 | |
2601 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
0ff2b86e L |
2602 | if (htab->elf.splt != NULL) |
2603 | { | |
f2c29a16 | 2604 | if (htab->plt_second != NULL) |
0ff2b86e | 2605 | { |
f2c29a16 L |
2606 | resolved_plt = htab->plt_second; |
2607 | plt_offset = eh->plt_second.offset; | |
0ff2b86e L |
2608 | } |
2609 | else | |
2610 | { | |
2611 | resolved_plt = htab->elf.splt; | |
2612 | plt_offset = h->plt.offset; | |
2613 | } | |
2614 | } | |
2615 | else | |
2616 | { | |
2617 | resolved_plt = htab->elf.iplt; | |
2618 | plt_offset = h->plt.offset; | |
2619 | } | |
2620 | ||
2621 | relocation = (resolved_plt->output_section->vma | |
2622 | + resolved_plt->output_offset + plt_offset); | |
cbe950e9 L |
2623 | |
2624 | switch (r_type) | |
2625 | { | |
2626 | default: | |
233cc9c1 | 2627 | bad_ifunc_reloc: |
4c544807 L |
2628 | if (h->root.root.string) |
2629 | name = h->root.root.string; | |
2630 | else | |
2631 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
2632 | NULL); | |
4eca0228 | 2633 | _bfd_error_handler |
695344c0 | 2634 | /* xgettext:c-format */ |
cbe950e9 | 2635 | (_("%B: relocation %s against STT_GNU_IFUNC " |
233cc9c1 L |
2636 | "symbol `%s' isn't supported"), input_bfd, |
2637 | howto->name, name); | |
cbe950e9 L |
2638 | bfd_set_error (bfd_error_bad_value); |
2639 | return FALSE; | |
2640 | ||
2641 | case R_X86_64_32S: | |
0e1862bb | 2642 | if (bfd_link_pic (info)) |
cbe950e9 | 2643 | abort (); |
710ab287 L |
2644 | goto do_relocation; |
2645 | ||
248775ba L |
2646 | case R_X86_64_32: |
2647 | if (ABI_64_P (output_bfd)) | |
2648 | goto do_relocation; | |
17672001 | 2649 | /* FALLTHROUGH */ |
eed180f8 | 2650 | case R_X86_64_64: |
233cc9c1 | 2651 | do_ifunc_pointer: |
710ab287 L |
2652 | if (rel->r_addend != 0) |
2653 | { | |
4c544807 L |
2654 | if (h->root.root.string) |
2655 | name = h->root.root.string; | |
2656 | else | |
2657 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
2658 | sym, NULL); | |
4eca0228 | 2659 | _bfd_error_handler |
695344c0 | 2660 | /* xgettext:c-format */ |
710ab287 | 2661 | (_("%B: relocation %s against STT_GNU_IFUNC " |
d42c267e | 2662 | "symbol `%s' has non-zero addend: %Ld"), |
ef77d6af | 2663 | input_bfd, howto->name, name, rel->r_addend); |
710ab287 L |
2664 | bfd_set_error (bfd_error_bad_value); |
2665 | return FALSE; | |
2666 | } | |
2667 | ||
2668 | /* Generate dynamic relcoation only when there is a | |
233cc9c1 L |
2669 | non-GOT reference in a shared object or there is no |
2670 | PLT. */ | |
2671 | if ((bfd_link_pic (info) && h->non_got_ref) | |
2672 | || h->plt.offset == (bfd_vma) -1) | |
710ab287 L |
2673 | { |
2674 | Elf_Internal_Rela outrel; | |
710ab287 L |
2675 | asection *sreloc; |
2676 | ||
c25bc9fc L |
2677 | /* Need a dynamic relocation to get the real function |
2678 | address. */ | |
710ab287 L |
2679 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, |
2680 | info, | |
2681 | input_section, | |
2682 | rel->r_offset); | |
2683 | if (outrel.r_offset == (bfd_vma) -1 | |
2684 | || outrel.r_offset == (bfd_vma) -2) | |
2685 | abort (); | |
2686 | ||
2687 | outrel.r_offset += (input_section->output_section->vma | |
2688 | + input_section->output_offset); | |
2689 | ||
cf1070f1 | 2690 | if (POINTER_LOCAL_IFUNC_P (info, h)) |
710ab287 | 2691 | { |
6322e5c5 L |
2692 | info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"), |
2693 | h->root.root.string, | |
2694 | h->root.u.def.section->owner); | |
2695 | ||
710ab287 | 2696 | /* This symbol is resolved locally. */ |
56b8aada L |
2697 | outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE); |
2698 | outrel.r_addend = (h->root.u.def.value | |
2699 | + h->root.u.def.section->output_section->vma | |
2700 | + h->root.u.def.section->output_offset); | |
710ab287 L |
2701 | } |
2702 | else | |
2703 | { | |
351f65ca | 2704 | outrel.r_info = htab->r_info (h->dynindx, r_type); |
710ab287 L |
2705 | outrel.r_addend = 0; |
2706 | } | |
2707 | ||
233cc9c1 L |
2708 | /* Dynamic relocations are stored in |
2709 | 1. .rela.ifunc section in PIC object. | |
2710 | 2. .rela.got section in dynamic executable. | |
2711 | 3. .rela.iplt section in static executable. */ | |
2712 | if (bfd_link_pic (info)) | |
2713 | sreloc = htab->elf.irelifunc; | |
2714 | else if (htab->elf.splt != NULL) | |
2715 | sreloc = htab->elf.srelgot; | |
2716 | else | |
2717 | sreloc = htab->elf.irelplt; | |
351f65ca | 2718 | elf_append_rela (output_bfd, sreloc, &outrel); |
710ab287 L |
2719 | |
2720 | /* If this reloc is against an external symbol, we | |
2721 | do not want to fiddle with the addend. Otherwise, | |
2722 | we need to include the symbol value so that it | |
2723 | becomes an addend for the dynamic reloc. For an | |
2724 | internal symbol, we have updated addend. */ | |
56b8aada | 2725 | continue; |
710ab287 | 2726 | } |
17672001 | 2727 | /* FALLTHROUGH */ |
cbe950e9 | 2728 | case R_X86_64_PC32: |
c3320543 | 2729 | case R_X86_64_PC32_BND: |
cbe950e9 L |
2730 | case R_X86_64_PC64: |
2731 | case R_X86_64_PLT32: | |
c3320543 | 2732 | case R_X86_64_PLT32_BND: |
cbe950e9 | 2733 | goto do_relocation; |
cbe950e9 L |
2734 | } |
2735 | } | |
2736 | ||
aec6b87e | 2737 | resolved_to_zero = (eh != NULL |
c5bce5c6 | 2738 | && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh)); |
aec6b87e | 2739 | |
70256ad8 AJ |
2740 | /* When generating a shared object, the relocations handled here are |
2741 | copied into the output file to be resolved at run time. */ | |
2742 | switch (r_type) | |
2743 | { | |
2744 | case R_X86_64_GOT32: | |
7b81dfbb | 2745 | case R_X86_64_GOT64: |
70256ad8 AJ |
2746 | /* Relocation is to the entry for this symbol in the global |
2747 | offset table. */ | |
70256ad8 | 2748 | case R_X86_64_GOTPCREL: |
56ceb5b5 L |
2749 | case R_X86_64_GOTPCRELX: |
2750 | case R_X86_64_REX_GOTPCRELX: | |
7b81dfbb AJ |
2751 | case R_X86_64_GOTPCREL64: |
2752 | /* Use global offset table entry as symbol value. */ | |
2753 | case R_X86_64_GOTPLT64: | |
de194d85 | 2754 | /* This is obsolete and treated the same as GOT64. */ |
6de2ae4a | 2755 | base_got = htab->elf.sgot; |
7b81dfbb | 2756 | |
6de2ae4a | 2757 | if (htab->elf.sgot == NULL) |
c434dee6 | 2758 | abort (); |
053579d7 | 2759 | |
9e9821dd | 2760 | relative_reloc = FALSE; |
51e0a107 | 2761 | if (h != NULL) |
70256ad8 | 2762 | { |
c434dee6 | 2763 | off = h->got.offset; |
7b81dfbb | 2764 | if (h->needs_plt |
eed180f8 | 2765 | && h->plt.offset != (bfd_vma)-1 |
7b81dfbb AJ |
2766 | && off == (bfd_vma)-1) |
2767 | { | |
2768 | /* We can't use h->got.offset here to save | |
2769 | state, or even just remember the offset, as | |
2770 | finish_dynamic_symbol would use that as offset into | |
2771 | .got. */ | |
38b12349 | 2772 | bfd_vma plt_index = (h->plt.offset / plt_entry_size |
765e526c | 2773 | - htab->plt.has_plt0); |
7b81dfbb | 2774 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
6de2ae4a | 2775 | base_got = htab->elf.sgotplt; |
7b81dfbb AJ |
2776 | } |
2777 | ||
2eba97c2 | 2778 | if (RESOLVED_LOCALLY_P (info, h, htab)) |
51e0a107 | 2779 | { |
2eba97c2 L |
2780 | /* We must initialize this entry in the global offset |
2781 | table. Since the offset must always be a multiple | |
2782 | of 8, we use the least significant bit to record | |
2783 | whether we have initialized it already. | |
51e0a107 JH |
2784 | |
2785 | When doing a dynamic link, we create a .rela.got | |
407443a3 AJ |
2786 | relocation entry to initialize the value. This is |
2787 | done in the finish_dynamic_symbol routine. */ | |
51e0a107 JH |
2788 | if ((off & 1) != 0) |
2789 | off &= ~1; | |
2790 | else | |
2791 | { | |
2792 | bfd_put_64 (output_bfd, relocation, | |
7b81dfbb AJ |
2793 | base_got->contents + off); |
2794 | /* Note that this is harmless for the GOTPLT64 case, | |
eed180f8 | 2795 | as -1 | 1 still is -1. */ |
51e0a107 | 2796 | h->got.offset |= 1; |
9e9821dd | 2797 | |
f70656b2 | 2798 | if (GENERATE_RELATIVE_RELOC_P (info, h)) |
9e9821dd L |
2799 | { |
2800 | /* If this symbol isn't dynamic in PIC, | |
2801 | generate R_X86_64_RELATIVE here. */ | |
2802 | eh->no_finish_dynamic_symbol = 1; | |
2803 | relative_reloc = TRUE; | |
2804 | } | |
51e0a107 JH |
2805 | } |
2806 | } | |
053579d7 | 2807 | else |
b34976b6 | 2808 | unresolved_reloc = FALSE; |
70256ad8 | 2809 | } |
51e0a107 JH |
2810 | else |
2811 | { | |
c434dee6 AJ |
2812 | if (local_got_offsets == NULL) |
2813 | abort (); | |
51e0a107 JH |
2814 | |
2815 | off = local_got_offsets[r_symndx]; | |
2816 | ||
2817 | /* The offset must always be a multiple of 8. We use | |
407443a3 AJ |
2818 | the least significant bit to record whether we have |
2819 | already generated the necessary reloc. */ | |
51e0a107 JH |
2820 | if ((off & 1) != 0) |
2821 | off &= ~1; | |
2822 | else | |
2823 | { | |
c434dee6 | 2824 | bfd_put_64 (output_bfd, relocation, |
7b81dfbb | 2825 | base_got->contents + off); |
9e9821dd | 2826 | local_got_offsets[r_symndx] |= 1; |
51e0a107 | 2827 | |
0e1862bb | 2828 | if (bfd_link_pic (info)) |
9e9821dd | 2829 | relative_reloc = TRUE; |
51e0a107 | 2830 | } |
51e0a107 | 2831 | } |
6a2bda3f | 2832 | |
9e9821dd L |
2833 | if (relative_reloc) |
2834 | { | |
2835 | asection *s; | |
2836 | Elf_Internal_Rela outrel; | |
2837 | ||
2838 | /* We need to generate a R_X86_64_RELATIVE reloc | |
2839 | for the dynamic linker. */ | |
2840 | s = htab->elf.srelgot; | |
2841 | if (s == NULL) | |
2842 | abort (); | |
2843 | ||
2844 | outrel.r_offset = (base_got->output_section->vma | |
2845 | + base_got->output_offset | |
2846 | + off); | |
2847 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); | |
2848 | outrel.r_addend = relocation; | |
2849 | elf_append_rela (output_bfd, s, &outrel); | |
2850 | } | |
2851 | ||
c434dee6 AJ |
2852 | if (off >= (bfd_vma) -2) |
2853 | abort (); | |
2854 | ||
7b81dfbb AJ |
2855 | relocation = base_got->output_section->vma |
2856 | + base_got->output_offset + off; | |
56ceb5b5 L |
2857 | if (r_type != R_X86_64_GOTPCREL |
2858 | && r_type != R_X86_64_GOTPCRELX | |
2859 | && r_type != R_X86_64_REX_GOTPCRELX | |
2860 | && r_type != R_X86_64_GOTPCREL64) | |
6de2ae4a L |
2861 | relocation -= htab->elf.sgotplt->output_section->vma |
2862 | - htab->elf.sgotplt->output_offset; | |
c434dee6 | 2863 | |
70256ad8 AJ |
2864 | break; |
2865 | ||
d6ab8113 JB |
2866 | case R_X86_64_GOTOFF64: |
2867 | /* Relocation is relative to the start of the global offset | |
2868 | table. */ | |
2869 | ||
3d949995 L |
2870 | /* Check to make sure it isn't a protected function or data |
2871 | symbol for shared library since it may not be local when | |
e3c0e327 L |
2872 | used as function address or with copy relocation. We also |
2873 | need to make sure that a symbol is referenced locally. */ | |
0e1862bb | 2874 | if (bfd_link_pic (info) && h) |
d6ab8113 | 2875 | { |
e3c0e327 L |
2876 | if (!h->def_regular) |
2877 | { | |
2878 | const char *v; | |
2879 | ||
2880 | switch (ELF_ST_VISIBILITY (h->other)) | |
2881 | { | |
2882 | case STV_HIDDEN: | |
2883 | v = _("hidden symbol"); | |
2884 | break; | |
2885 | case STV_INTERNAL: | |
2886 | v = _("internal symbol"); | |
2887 | break; | |
2888 | case STV_PROTECTED: | |
2889 | v = _("protected symbol"); | |
2890 | break; | |
2891 | default: | |
2892 | v = _("symbol"); | |
2893 | break; | |
2894 | } | |
2895 | ||
4eca0228 | 2896 | _bfd_error_handler |
695344c0 | 2897 | /* xgettext:c-format */ |
63a5468a AM |
2898 | (_("%B: relocation R_X86_64_GOTOFF64 against undefined %s" |
2899 | " `%s' can not be used when making a shared object"), | |
e3c0e327 L |
2900 | input_bfd, v, h->root.root.string); |
2901 | bfd_set_error (bfd_error_bad_value); | |
2902 | return FALSE; | |
2903 | } | |
0e1862bb | 2904 | else if (!bfd_link_executable (info) |
6999821f | 2905 | && !SYMBOL_REFERENCES_LOCAL_P (info, h) |
e3c0e327 L |
2906 | && (h->type == STT_FUNC |
2907 | || h->type == STT_OBJECT) | |
2908 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
2909 | { | |
4eca0228 | 2910 | _bfd_error_handler |
695344c0 | 2911 | /* xgettext:c-format */ |
63a5468a AM |
2912 | (_("%B: relocation R_X86_64_GOTOFF64 against protected %s" |
2913 | " `%s' can not be used when making a shared object"), | |
e3c0e327 L |
2914 | input_bfd, |
2915 | h->type == STT_FUNC ? "function" : "data", | |
2916 | h->root.root.string); | |
2917 | bfd_set_error (bfd_error_bad_value); | |
d6ab8113 | 2918 | return FALSE; |
e3c0e327 | 2919 | } |
d6ab8113 JB |
2920 | } |
2921 | ||
2922 | /* Note that sgot is not involved in this | |
2923 | calculation. We always want the start of .got.plt. If we | |
2924 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
2925 | permitted by the ABI, we might have to change this | |
2926 | calculation. */ | |
6de2ae4a L |
2927 | relocation -= htab->elf.sgotplt->output_section->vma |
2928 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
2929 | break; |
2930 | ||
2931 | case R_X86_64_GOTPC32: | |
7b81dfbb | 2932 | case R_X86_64_GOTPC64: |
d6ab8113 | 2933 | /* Use global offset table as symbol value. */ |
6de2ae4a L |
2934 | relocation = htab->elf.sgotplt->output_section->vma |
2935 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
2936 | unresolved_reloc = FALSE; |
2937 | break; | |
7b81dfbb AJ |
2938 | |
2939 | case R_X86_64_PLTOFF64: | |
2940 | /* Relocation is PLT entry relative to GOT. For local | |
2941 | symbols it's the symbol itself relative to GOT. */ | |
eed180f8 | 2942 | if (h != NULL |
7b81dfbb | 2943 | /* See PLT32 handling. */ |
9d734efa L |
2944 | && (h->plt.offset != (bfd_vma) -1 |
2945 | || eh->plt_got.offset != (bfd_vma) -1) | |
6de2ae4a | 2946 | && htab->elf.splt != NULL) |
7b81dfbb | 2947 | { |
9d734efa L |
2948 | if (eh->plt_got.offset != (bfd_vma) -1) |
2949 | { | |
2950 | /* Use the GOT PLT. */ | |
2951 | resolved_plt = htab->plt_got; | |
2952 | plt_offset = eh->plt_got.offset; | |
2953 | } | |
f2c29a16 | 2954 | else if (htab->plt_second != NULL) |
0ff2b86e | 2955 | { |
f2c29a16 L |
2956 | resolved_plt = htab->plt_second; |
2957 | plt_offset = eh->plt_second.offset; | |
0ff2b86e L |
2958 | } |
2959 | else | |
2960 | { | |
2961 | resolved_plt = htab->elf.splt; | |
2962 | plt_offset = h->plt.offset; | |
2963 | } | |
2964 | ||
2965 | relocation = (resolved_plt->output_section->vma | |
2966 | + resolved_plt->output_offset | |
2967 | + plt_offset); | |
7b81dfbb AJ |
2968 | unresolved_reloc = FALSE; |
2969 | } | |
2970 | ||
6de2ae4a L |
2971 | relocation -= htab->elf.sgotplt->output_section->vma |
2972 | + htab->elf.sgotplt->output_offset; | |
7b81dfbb | 2973 | break; |
d6ab8113 | 2974 | |
70256ad8 | 2975 | case R_X86_64_PLT32: |
c3320543 | 2976 | case R_X86_64_PLT32_BND: |
70256ad8 AJ |
2977 | /* Relocation is to the entry for this symbol in the |
2978 | procedure linkage table. */ | |
2979 | ||
2980 | /* Resolve a PLT32 reloc against a local symbol directly, | |
407443a3 | 2981 | without using the procedure linkage table. */ |
70256ad8 AJ |
2982 | if (h == NULL) |
2983 | break; | |
2984 | ||
dd7e64d4 L |
2985 | if ((h->plt.offset == (bfd_vma) -1 |
2986 | && eh->plt_got.offset == (bfd_vma) -1) | |
6de2ae4a | 2987 | || htab->elf.splt == NULL) |
70256ad8 AJ |
2988 | { |
2989 | /* We didn't make a PLT entry for this symbol. This | |
407443a3 AJ |
2990 | happens when statically linking PIC code, or when |
2991 | using -Bsymbolic. */ | |
70256ad8 AJ |
2992 | break; |
2993 | } | |
2994 | ||
dd7e64d4 | 2995 | if (h->plt.offset != (bfd_vma) -1) |
0ff2b86e | 2996 | { |
f2c29a16 | 2997 | if (htab->plt_second != NULL) |
dd7e64d4 | 2998 | { |
f2c29a16 L |
2999 | resolved_plt = htab->plt_second; |
3000 | plt_offset = eh->plt_second.offset; | |
dd7e64d4 L |
3001 | } |
3002 | else | |
3003 | { | |
3004 | resolved_plt = htab->elf.splt; | |
3005 | plt_offset = h->plt.offset; | |
3006 | } | |
0ff2b86e L |
3007 | } |
3008 | else | |
3009 | { | |
dd7e64d4 L |
3010 | /* Use the GOT PLT. */ |
3011 | resolved_plt = htab->plt_got; | |
3012 | plt_offset = eh->plt_got.offset; | |
0ff2b86e L |
3013 | } |
3014 | ||
3015 | relocation = (resolved_plt->output_section->vma | |
3016 | + resolved_plt->output_offset | |
3017 | + plt_offset); | |
b34976b6 | 3018 | unresolved_reloc = FALSE; |
70256ad8 AJ |
3019 | break; |
3020 | ||
1788fc08 L |
3021 | case R_X86_64_SIZE32: |
3022 | case R_X86_64_SIZE64: | |
1788fc08 L |
3023 | /* Set to symbol size. */ |
3024 | relocation = st_size; | |
3025 | goto direct; | |
3026 | ||
fd8ab9e5 AJ |
3027 | case R_X86_64_PC8: |
3028 | case R_X86_64_PC16: | |
3029 | case R_X86_64_PC32: | |
c3320543 | 3030 | case R_X86_64_PC32_BND: |
6333bc0d | 3031 | /* Don't complain about -fPIC if the symbol is undefined when |
7073b5b9 L |
3032 | building executable unless it is unresolved weak symbol or |
3033 | -z nocopyreloc is used. */ | |
aec6b87e | 3034 | if ((input_section->flags & SEC_ALLOC) != 0 |
90f487df | 3035 | && (input_section->flags & SEC_READONLY) != 0 |
6333bc0d | 3036 | && h != NULL |
aec6b87e | 3037 | && ((bfd_link_executable (info) |
7073b5b9 L |
3038 | && ((h->root.type == bfd_link_hash_undefweak |
3039 | && !resolved_to_zero) | |
a5b4ee94 L |
3040 | || ((info->nocopyreloc |
3041 | || (eh->def_protected | |
3042 | && elf_has_no_copy_on_protected (h->root.u.def.section->owner))) | |
7073b5b9 L |
3043 | && h->def_dynamic |
3044 | && !(h->root.u.def.section->flags & SEC_CODE)))) | |
c5bb8910 | 3045 | || bfd_link_dll (info))) |
6610a52d | 3046 | { |
41bed6dd L |
3047 | bfd_boolean fail = FALSE; |
3048 | bfd_boolean branch | |
c3320543 L |
3049 | = ((r_type == R_X86_64_PC32 |
3050 | || r_type == R_X86_64_PC32_BND) | |
41bed6dd L |
3051 | && is_32bit_relative_branch (contents, rel->r_offset)); |
3052 | ||
6999821f | 3053 | if (SYMBOL_REFERENCES_LOCAL_P (info, h)) |
41bed6dd L |
3054 | { |
3055 | /* Symbol is referenced locally. Make sure it is | |
3056 | defined locally or for a branch. */ | |
8170f769 L |
3057 | fail = (!(h->def_regular || ELF_COMMON_DEF_P (h)) |
3058 | && !branch); | |
41bed6dd | 3059 | } |
aec6b87e | 3060 | else if (!(bfd_link_pie (info) |
bc696fd5 | 3061 | && (h->needs_copy || eh->needs_copy))) |
41bed6dd | 3062 | { |
9a926d55 L |
3063 | /* Symbol doesn't need copy reloc and isn't referenced |
3064 | locally. We only allow branch to symbol with | |
3065 | non-default visibility. */ | |
41bed6dd L |
3066 | fail = (!branch |
3067 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT); | |
3068 | } | |
3069 | ||
3070 | if (fail) | |
aab921ad | 3071 | return elf_x86_64_need_pic (info, input_bfd, input_section, |
338c190a | 3072 | h, NULL, NULL, howto); |
6610a52d L |
3073 | } |
3074 | /* Fall through. */ | |
3075 | ||
70256ad8 AJ |
3076 | case R_X86_64_8: |
3077 | case R_X86_64_16: | |
3078 | case R_X86_64_32: | |
d6ab8113 | 3079 | case R_X86_64_PC64: |
6b3db546 | 3080 | case R_X86_64_64: |
80643fbc | 3081 | /* FIXME: The ABI says the linker should make sure the value is |
407443a3 | 3082 | the same when it's zeroextended to 64 bit. */ |
c434dee6 | 3083 | |
1788fc08 | 3084 | direct: |
b1e24c02 | 3085 | if ((input_section->flags & SEC_ALLOC) == 0) |
c434dee6 AJ |
3086 | break; |
3087 | ||
9a926d55 | 3088 | /* Don't copy a pc-relative relocation into the output file |
6333bc0d | 3089 | if the symbol needs copy reloc or the symbol is undefined |
04ebc307 | 3090 | when building executable. Copy dynamic function pointer |
aec6b87e L |
3091 | relocations. Don't generate dynamic relocations against |
3092 | resolved undefined weak symbols in PIE. */ | |
0e1862bb | 3093 | if ((bfd_link_pic (info) |
aec6b87e | 3094 | && !(bfd_link_pie (info) |
fd9edc90 | 3095 | && h != NULL |
6333bc0d L |
3096 | && (h->needs_copy |
3097 | || eh->needs_copy | |
3098 | || h->root.type == bfd_link_hash_undefined) | |
daf1c414 | 3099 | && (X86_PCREL_TYPE_P (r_type) |
d8457a04 L |
3100 | || r_type == R_X86_64_SIZE32 |
3101 | || r_type == R_X86_64_SIZE64)) | |
4bc6e03a | 3102 | && (h == NULL |
aec6b87e L |
3103 | || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
3104 | && !resolved_to_zero) | |
3105 | || h->root.type != bfd_link_hash_undefweak)) | |
daf1c414 | 3106 | && ((! X86_PCREL_TYPE_P (r_type) |
1788fc08 L |
3107 | && r_type != R_X86_64_SIZE32 |
3108 | && r_type != R_X86_64_SIZE64) | |
d8045f23 | 3109 | || ! SYMBOL_CALLS_LOCAL (info, h))) |
d40d037c | 3110 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 3111 | && !bfd_link_pic (info) |
c434dee6 AJ |
3112 | && h != NULL |
3113 | && h->dynindx != -1 | |
aec6b87e L |
3114 | && (!h->non_got_ref |
3115 | || eh->func_pointer_refcount > 0 | |
3116 | || (h->root.type == bfd_link_hash_undefweak | |
3117 | && !resolved_to_zero)) | |
bae420ef L |
3118 | && ((h->def_dynamic && !h->def_regular) |
3119 | /* Undefined weak symbol is bound locally when | |
3120 | PIC is false. */ | |
0f88be7a | 3121 | || h->root.type == bfd_link_hash_undefined))) |
70256ad8 AJ |
3122 | { |
3123 | Elf_Internal_Rela outrel; | |
b34976b6 | 3124 | bfd_boolean skip, relocate; |
c434dee6 | 3125 | asection *sreloc; |
70256ad8 AJ |
3126 | |
3127 | /* When generating a shared object, these relocations | |
3128 | are copied into the output file to be resolved at run | |
407443a3 | 3129 | time. */ |
b34976b6 AM |
3130 | skip = FALSE; |
3131 | relocate = FALSE; | |
70256ad8 | 3132 | |
c629eae0 JJ |
3133 | outrel.r_offset = |
3134 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
c434dee6 | 3135 | rel->r_offset); |
c629eae0 | 3136 | if (outrel.r_offset == (bfd_vma) -1) |
b34976b6 | 3137 | skip = TRUE; |
0fb19cbc | 3138 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3139 | skip = TRUE, relocate = TRUE; |
70256ad8 AJ |
3140 | |
3141 | outrel.r_offset += (input_section->output_section->vma | |
3142 | + input_section->output_offset); | |
3143 | ||
3144 | if (skip) | |
0bb2d96a | 3145 | memset (&outrel, 0, sizeof outrel); |
c434dee6 | 3146 | |
fd8ab9e5 AJ |
3147 | /* h->dynindx may be -1 if this symbol was marked to |
3148 | become local. */ | |
3149 | else if (h != NULL | |
c434dee6 | 3150 | && h->dynindx != -1 |
daf1c414 | 3151 | && (X86_PCREL_TYPE_P (r_type) |
4e0c91e4 L |
3152 | || !(bfd_link_executable (info) |
3153 | || SYMBOLIC_BIND (info, h)) | |
d8045f23 | 3154 | || ! h->def_regular)) |
70256ad8 | 3155 | { |
351f65ca | 3156 | outrel.r_info = htab->r_info (h->dynindx, r_type); |
c434dee6 | 3157 | outrel.r_addend = rel->r_addend; |
70256ad8 AJ |
3158 | } |
3159 | else | |
3160 | { | |
4c10bbaa L |
3161 | /* This symbol is local, or marked to become local. |
3162 | When relocation overflow check is disabled, we | |
3163 | convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */ | |
3164 | if (r_type == htab->pointer_r_type | |
3165 | || (r_type == R_X86_64_32 | |
3166 | && info->no_reloc_overflow_check)) | |
607c0e09 | 3167 | { |
b34976b6 | 3168 | relocate = TRUE; |
351f65ca | 3169 | outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
607c0e09 AS |
3170 | outrel.r_addend = relocation + rel->r_addend; |
3171 | } | |
64d25c44 L |
3172 | else if (r_type == R_X86_64_64 |
3173 | && !ABI_64_P (output_bfd)) | |
3174 | { | |
3175 | relocate = TRUE; | |
3176 | outrel.r_info = htab->r_info (0, | |
3177 | R_X86_64_RELATIVE64); | |
3178 | outrel.r_addend = relocation + rel->r_addend; | |
8cf0d2dd L |
3179 | /* Check addend overflow. */ |
3180 | if ((outrel.r_addend & 0x80000000) | |
3181 | != (rel->r_addend & 0x80000000)) | |
3182 | { | |
3183 | const char *name; | |
268a8d3a | 3184 | int addend = rel->r_addend; |
8cf0d2dd L |
3185 | if (h && h->root.root.string) |
3186 | name = h->root.root.string; | |
3187 | else | |
3188 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
3189 | sym, NULL); | |
d42c267e AM |
3190 | _bfd_error_handler |
3191 | /* xgettext:c-format */ | |
3192 | (_("%B: addend %s%#x in relocation %s against " | |
3193 | "symbol `%s' at %#Lx in section `%A' is " | |
3194 | "out of range"), | |
3195 | input_bfd, addend < 0 ? "-" : "", addend, | |
3196 | howto->name, name, rel->r_offset, input_section); | |
8cf0d2dd L |
3197 | bfd_set_error (bfd_error_bad_value); |
3198 | return FALSE; | |
3199 | } | |
64d25c44 | 3200 | } |
607c0e09 AS |
3201 | else |
3202 | { | |
3203 | long sindx; | |
3204 | ||
8517fae7 | 3205 | if (bfd_is_abs_section (sec)) |
607c0e09 AS |
3206 | sindx = 0; |
3207 | else if (sec == NULL || sec->owner == NULL) | |
3208 | { | |
3209 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3210 | return FALSE; |
607c0e09 AS |
3211 | } |
3212 | else | |
3213 | { | |
3214 | asection *osec; | |
3215 | ||
74541ad4 AM |
3216 | /* We are turning this relocation into one |
3217 | against a section symbol. It would be | |
3218 | proper to subtract the symbol's value, | |
3219 | osec->vma, from the emitted reloc addend, | |
3220 | but ld.so expects buggy relocs. */ | |
607c0e09 AS |
3221 | osec = sec->output_section; |
3222 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
3223 | if (sindx == 0) |
3224 | { | |
3225 | asection *oi = htab->elf.text_index_section; | |
3226 | sindx = elf_section_data (oi)->dynindx; | |
3227 | } | |
3228 | BFD_ASSERT (sindx != 0); | |
607c0e09 AS |
3229 | } |
3230 | ||
351f65ca | 3231 | outrel.r_info = htab->r_info (sindx, r_type); |
607c0e09 AS |
3232 | outrel.r_addend = relocation + rel->r_addend; |
3233 | } | |
70256ad8 AJ |
3234 | } |
3235 | ||
cbe950e9 | 3236 | sreloc = elf_section_data (input_section)->sreloc; |
d8045f23 | 3237 | |
62d78908 L |
3238 | if (sreloc == NULL || sreloc->contents == NULL) |
3239 | { | |
3240 | r = bfd_reloc_notsupported; | |
3241 | goto check_relocation_error; | |
3242 | } | |
c434dee6 | 3243 | |
351f65ca | 3244 | elf_append_rela (output_bfd, sreloc, &outrel); |
70256ad8 AJ |
3245 | |
3246 | /* If this reloc is against an external symbol, we do | |
3247 | not want to fiddle with the addend. Otherwise, we | |
3248 | need to include the symbol value so that it becomes | |
3249 | an addend for the dynamic reloc. */ | |
0f88be7a | 3250 | if (! relocate) |
70256ad8 AJ |
3251 | continue; |
3252 | } | |
3253 | ||
3254 | break; | |
3255 | ||
bffbf940 | 3256 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
3257 | case R_X86_64_GOTPC32_TLSDESC: |
3258 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 3259 | case R_X86_64_GOTTPOFF: |
bffbf940 JJ |
3260 | tls_type = GOT_UNKNOWN; |
3261 | if (h == NULL && local_got_offsets) | |
0afcef53 | 3262 | tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx]; |
bffbf940 | 3263 | else if (h != NULL) |
0afcef53 | 3264 | tls_type = elf_x86_hash_entry (h)->tls_type; |
142411ca | 3265 | |
419414ea | 3266 | r_type_tls = r_type; |
351f65ca L |
3267 | if (! elf_x86_64_tls_transition (info, input_bfd, |
3268 | input_section, contents, | |
3269 | symtab_hdr, sym_hashes, | |
419414ea | 3270 | &r_type_tls, tls_type, rel, |
bedfd056 | 3271 | relend, h, r_symndx, TRUE)) |
534a31f6 | 3272 | return FALSE; |
bffbf940 | 3273 | |
419414ea | 3274 | if (r_type_tls == R_X86_64_TPOFF32) |
bffbf940 | 3275 | { |
142411ca L |
3276 | bfd_vma roff = rel->r_offset; |
3277 | ||
bffbf940 | 3278 | BFD_ASSERT (! unresolved_reloc); |
142411ca | 3279 | |
419414ea | 3280 | if (r_type == R_X86_64_TLSGD) |
bffbf940 | 3281 | { |
52bc799a | 3282 | /* GD->LE transition. For 64bit, change |
e2cbcd91 L |
3283 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
3284 | .word 0x6666; rex64; call __tls_get_addr@PLT | |
3285 | or | |
3286 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi | |
3287 | .byte 0x66; rex64 | |
3288 | call *__tls_get_addr@GOTPCREL(%rip) | |
3289 | which may be converted to | |
3290 | addr32 call __tls_get_addr | |
52bc799a | 3291 | into: |
e2cbcd91 L |
3292 | movq %fs:0, %rax |
3293 | leaq foo@tpoff(%rax), %rax | |
52bc799a | 3294 | For 32bit, change |
e2cbcd91 L |
3295 | leaq foo@tlsgd(%rip), %rdi |
3296 | .word 0x6666; rex64; call __tls_get_addr@PLT | |
3297 | or | |
3298 | leaq foo@tlsgd(%rip), %rdi | |
3299 | .byte 0x66; rex64 | |
3300 | call *__tls_get_addr@GOTPCREL(%rip) | |
3301 | which may be converted to | |
3302 | addr32 call __tls_get_addr | |
52bc799a | 3303 | into: |
e2cbcd91 L |
3304 | movl %fs:0, %eax |
3305 | leaq foo@tpoff(%rax), %rax | |
5c98a14e | 3306 | For largepic, change: |
e2cbcd91 L |
3307 | leaq foo@tlsgd(%rip), %rdi |
3308 | movabsq $__tls_get_addr@pltoff, %rax | |
3309 | addq %r15, %rax | |
3310 | call *%rax | |
5c98a14e | 3311 | into: |
e2cbcd91 L |
3312 | movq %fs:0, %rax |
3313 | leaq foo@tpoff(%rax), %rax | |
3314 | nopw 0x0(%rax,%rax,1) */ | |
5c98a14e | 3315 | int largepic = 0; |
e2cbcd91 | 3316 | if (ABI_64_P (output_bfd)) |
5c98a14e | 3317 | { |
e2cbcd91 L |
3318 | if (contents[roff + 5] == 0xb8) |
3319 | { | |
3320 | memcpy (contents + roff - 3, | |
3321 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80" | |
3322 | "\0\0\0\0\x66\x0f\x1f\x44\0", 22); | |
3323 | largepic = 1; | |
3324 | } | |
3325 | else | |
3326 | memcpy (contents + roff - 4, | |
3327 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", | |
3328 | 16); | |
5c98a14e | 3329 | } |
52bc799a L |
3330 | else |
3331 | memcpy (contents + roff - 3, | |
3332 | "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", | |
3333 | 15); | |
eb4ff4d6 | 3334 | bfd_put_32 (output_bfd, |
351f65ca | 3335 | elf_x86_64_tpoff (info, relocation), |
5c98a14e | 3336 | contents + roff + 8 + largepic); |
e2cbcd91 L |
3337 | /* Skip R_X86_64_PC32, R_X86_64_PLT32, |
3338 | R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */ | |
bffbf940 | 3339 | rel++; |
60f2e42e | 3340 | wrel++; |
bffbf940 JJ |
3341 | continue; |
3342 | } | |
419414ea | 3343 | else if (r_type == R_X86_64_GOTPC32_TLSDESC) |
67a4f2b7 AO |
3344 | { |
3345 | /* GDesc -> LE transition. | |
3346 | It's originally something like: | |
3347 | leaq x@tlsdesc(%rip), %rax | |
3348 | ||
3349 | Change it to: | |
c9736ba0 | 3350 | movl $x@tpoff, %rax. */ |
67a4f2b7 | 3351 | |
c9736ba0 | 3352 | unsigned int val, type; |
67a4f2b7 | 3353 | |
67a4f2b7 | 3354 | type = bfd_get_8 (input_bfd, contents + roff - 3); |
67a4f2b7 | 3355 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
3356 | bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1), |
3357 | contents + roff - 3); | |
3358 | bfd_put_8 (output_bfd, 0xc7, contents + roff - 2); | |
3359 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3360 | contents + roff - 1); | |
eb4ff4d6 | 3361 | bfd_put_32 (output_bfd, |
351f65ca | 3362 | elf_x86_64_tpoff (info, relocation), |
67a4f2b7 AO |
3363 | contents + roff); |
3364 | continue; | |
3365 | } | |
419414ea | 3366 | else if (r_type == R_X86_64_TLSDESC_CALL) |
67a4f2b7 AO |
3367 | { |
3368 | /* GDesc -> LE transition. | |
3369 | It's originally: | |
3370 | call *(%rax) | |
3371 | Turn it into: | |
142411ca | 3372 | xchg %ax,%ax. */ |
10efb593 | 3373 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
3374 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3375 | continue; | |
3376 | } | |
419414ea | 3377 | else if (r_type == R_X86_64_GOTTPOFF) |
bffbf940 | 3378 | { |
bffbf940 | 3379 | /* IE->LE transition: |
cf61b747 | 3380 | For 64bit, originally it can be one of: |
bffbf940 JJ |
3381 | movq foo@gottpoff(%rip), %reg |
3382 | addq foo@gottpoff(%rip), %reg | |
3383 | We change it into: | |
3384 | movq $foo, %reg | |
3385 | leaq foo(%reg), %reg | |
cf61b747 L |
3386 | addq $foo, %reg. |
3387 | For 32bit, originally it can be one of: | |
3388 | movq foo@gottpoff(%rip), %reg | |
3389 | addl foo@gottpoff(%rip), %reg | |
3390 | We change it into: | |
3391 | movq $foo, %reg | |
3392 | leal foo(%reg), %reg | |
3393 | addl $foo, %reg. */ | |
142411ca L |
3394 | |
3395 | unsigned int val, type, reg; | |
3396 | ||
cf61b747 L |
3397 | if (roff >= 3) |
3398 | val = bfd_get_8 (input_bfd, contents + roff - 3); | |
3399 | else | |
3400 | val = 0; | |
142411ca L |
3401 | type = bfd_get_8 (input_bfd, contents + roff - 2); |
3402 | reg = bfd_get_8 (input_bfd, contents + roff - 1); | |
bffbf940 | 3403 | reg >>= 3; |
bffbf940 JJ |
3404 | if (type == 0x8b) |
3405 | { | |
3406 | /* movq */ | |
3407 | if (val == 0x4c) | |
3408 | bfd_put_8 (output_bfd, 0x49, | |
142411ca | 3409 | contents + roff - 3); |
4a4c5f25 L |
3410 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
3411 | bfd_put_8 (output_bfd, 0x41, | |
3412 | contents + roff - 3); | |
bffbf940 | 3413 | bfd_put_8 (output_bfd, 0xc7, |
142411ca | 3414 | contents + roff - 2); |
bffbf940 | 3415 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 3416 | contents + roff - 1); |
bffbf940 JJ |
3417 | } |
3418 | else if (reg == 4) | |
3419 | { | |
cf61b747 L |
3420 | /* addq/addl -> addq/addl - addressing with %rsp/%r12 |
3421 | is special */ | |
bffbf940 JJ |
3422 | if (val == 0x4c) |
3423 | bfd_put_8 (output_bfd, 0x49, | |
142411ca | 3424 | contents + roff - 3); |
4a4c5f25 L |
3425 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
3426 | bfd_put_8 (output_bfd, 0x41, | |
3427 | contents + roff - 3); | |
bffbf940 | 3428 | bfd_put_8 (output_bfd, 0x81, |
142411ca | 3429 | contents + roff - 2); |
bffbf940 | 3430 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 3431 | contents + roff - 1); |
bffbf940 JJ |
3432 | } |
3433 | else | |
3434 | { | |
cf61b747 | 3435 | /* addq/addl -> leaq/leal */ |
bffbf940 JJ |
3436 | if (val == 0x4c) |
3437 | bfd_put_8 (output_bfd, 0x4d, | |
142411ca | 3438 | contents + roff - 3); |
4a4c5f25 L |
3439 | else if (!ABI_64_P (output_bfd) && val == 0x44) |
3440 | bfd_put_8 (output_bfd, 0x45, | |
3441 | contents + roff - 3); | |
bffbf940 | 3442 | bfd_put_8 (output_bfd, 0x8d, |
142411ca | 3443 | contents + roff - 2); |
bffbf940 | 3444 | bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3), |
142411ca | 3445 | contents + roff - 1); |
bffbf940 | 3446 | } |
eb4ff4d6 | 3447 | bfd_put_32 (output_bfd, |
351f65ca | 3448 | elf_x86_64_tpoff (info, relocation), |
142411ca | 3449 | contents + roff); |
bffbf940 JJ |
3450 | continue; |
3451 | } | |
142411ca L |
3452 | else |
3453 | BFD_ASSERT (FALSE); | |
bffbf940 JJ |
3454 | } |
3455 | ||
6de2ae4a | 3456 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
3457 | abort (); |
3458 | ||
3459 | if (h != NULL) | |
67a4f2b7 AO |
3460 | { |
3461 | off = h->got.offset; | |
0afcef53 | 3462 | offplt = elf_x86_hash_entry (h)->tlsdesc_got; |
67a4f2b7 | 3463 | } |
bffbf940 JJ |
3464 | else |
3465 | { | |
3466 | if (local_got_offsets == NULL) | |
3467 | abort (); | |
3468 | ||
3469 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3470 | offplt = local_tlsdesc_gotents[r_symndx]; |
bffbf940 JJ |
3471 | } |
3472 | ||
3473 | if ((off & 1) != 0) | |
3474 | off &= ~1; | |
26e41594 | 3475 | else |
bffbf940 JJ |
3476 | { |
3477 | Elf_Internal_Rela outrel; | |
bffbf940 | 3478 | int dr_type, indx; |
67a4f2b7 | 3479 | asection *sreloc; |
bffbf940 | 3480 | |
6de2ae4a | 3481 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
3482 | abort (); |
3483 | ||
67a4f2b7 AO |
3484 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
3485 | ||
3486 | if (GOT_TLS_GDESC_P (tls_type)) | |
3487 | { | |
351f65ca | 3488 | outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC); |
67a4f2b7 | 3489 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt |
6de2ae4a L |
3490 | + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size); |
3491 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
3492 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3493 | + offplt |
3494 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 3495 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 3496 | if (indx == 0) |
0afcef53 | 3497 | outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info); |
67a4f2b7 AO |
3498 | else |
3499 | outrel.r_addend = 0; | |
351f65ca | 3500 | elf_append_rela (output_bfd, sreloc, &outrel); |
67a4f2b7 AO |
3501 | } |
3502 | ||
6de2ae4a | 3503 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 3504 | |
6de2ae4a L |
3505 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3506 | + htab->elf.sgot->output_offset + off); | |
bffbf940 | 3507 | |
67a4f2b7 | 3508 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 | 3509 | dr_type = R_X86_64_DTPMOD64; |
67a4f2b7 AO |
3510 | else if (GOT_TLS_GDESC_P (tls_type)) |
3511 | goto dr_done; | |
bffbf940 JJ |
3512 | else |
3513 | dr_type = R_X86_64_TPOFF64; | |
3514 | ||
6de2ae4a | 3515 | bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off); |
bffbf940 | 3516 | outrel.r_addend = 0; |
67a4f2b7 AO |
3517 | if ((dr_type == R_X86_64_TPOFF64 |
3518 | || dr_type == R_X86_64_TLSDESC) && indx == 0) | |
0afcef53 | 3519 | outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info); |
351f65ca | 3520 | outrel.r_info = htab->r_info (indx, dr_type); |
bffbf940 | 3521 | |
351f65ca | 3522 | elf_append_rela (output_bfd, sreloc, &outrel); |
bffbf940 | 3523 | |
67a4f2b7 | 3524 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 JJ |
3525 | { |
3526 | if (indx == 0) | |
3527 | { | |
d40d037c | 3528 | BFD_ASSERT (! unresolved_reloc); |
bffbf940 | 3529 | bfd_put_64 (output_bfd, |
0afcef53 | 3530 | relocation - _bfd_x86_elf_dtpoff_base (info), |
6de2ae4a | 3531 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
bffbf940 JJ |
3532 | } |
3533 | else | |
3534 | { | |
3535 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 3536 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
351f65ca | 3537 | outrel.r_info = htab->r_info (indx, |
bffbf940 JJ |
3538 | R_X86_64_DTPOFF64); |
3539 | outrel.r_offset += GOT_ENTRY_SIZE; | |
351f65ca | 3540 | elf_append_rela (output_bfd, sreloc, |
464d3bd4 | 3541 | &outrel); |
bffbf940 JJ |
3542 | } |
3543 | } | |
3544 | ||
67a4f2b7 | 3545 | dr_done: |
bffbf940 JJ |
3546 | if (h != NULL) |
3547 | h->got.offset |= 1; | |
3548 | else | |
3549 | local_got_offsets[r_symndx] |= 1; | |
3550 | } | |
3551 | ||
67a4f2b7 AO |
3552 | if (off >= (bfd_vma) -2 |
3553 | && ! GOT_TLS_GDESC_P (tls_type)) | |
bffbf940 | 3554 | abort (); |
419414ea | 3555 | if (r_type_tls == r_type) |
bffbf940 | 3556 | { |
67a4f2b7 AO |
3557 | if (r_type == R_X86_64_GOTPC32_TLSDESC |
3558 | || r_type == R_X86_64_TLSDESC_CALL) | |
6de2ae4a L |
3559 | relocation = htab->elf.sgotplt->output_section->vma |
3560 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3561 | + offplt + htab->sgotplt_jump_table_size; |
3562 | else | |
6de2ae4a L |
3563 | relocation = htab->elf.sgot->output_section->vma |
3564 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 3565 | unresolved_reloc = FALSE; |
bffbf940 | 3566 | } |
142411ca | 3567 | else |
67a4f2b7 | 3568 | { |
142411ca | 3569 | bfd_vma roff = rel->r_offset; |
67a4f2b7 | 3570 | |
419414ea | 3571 | if (r_type == R_X86_64_TLSGD) |
142411ca | 3572 | { |
52bc799a | 3573 | /* GD->IE transition. For 64bit, change |
e2cbcd91 L |
3574 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
3575 | .word 0x6666; rex64; call __tls_get_addr@PLT | |
3576 | or | |
3577 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi | |
3578 | .byte 0x66; rex64 | |
3579 | call *__tls_get_addr@GOTPCREL(%rip | |
3580 | which may be converted to | |
3581 | addr32 call __tls_get_addr | |
52bc799a | 3582 | into: |
e2cbcd91 L |
3583 | movq %fs:0, %rax |
3584 | addq foo@gottpoff(%rip), %rax | |
52bc799a | 3585 | For 32bit, change |
e2cbcd91 L |
3586 | leaq foo@tlsgd(%rip), %rdi |
3587 | .word 0x6666; rex64; call __tls_get_addr@PLT | |
3588 | or | |
3589 | leaq foo@tlsgd(%rip), %rdi | |
3590 | .byte 0x66; rex64; | |
3591 | call *__tls_get_addr@GOTPCREL(%rip) | |
3592 | which may be converted to | |
3593 | addr32 call __tls_get_addr | |
52bc799a | 3594 | into: |
e2cbcd91 L |
3595 | movl %fs:0, %eax |
3596 | addq foo@gottpoff(%rip), %rax | |
5c98a14e | 3597 | For largepic, change: |
e2cbcd91 L |
3598 | leaq foo@tlsgd(%rip), %rdi |
3599 | movabsq $__tls_get_addr@pltoff, %rax | |
3600 | addq %r15, %rax | |
3601 | call *%rax | |
5c98a14e | 3602 | into: |
e2cbcd91 L |
3603 | movq %fs:0, %rax |
3604 | addq foo@gottpoff(%rax), %rax | |
3605 | nopw 0x0(%rax,%rax,1) */ | |
5c98a14e | 3606 | int largepic = 0; |
e2cbcd91 | 3607 | if (ABI_64_P (output_bfd)) |
5c98a14e | 3608 | { |
e2cbcd91 L |
3609 | if (contents[roff + 5] == 0xb8) |
3610 | { | |
3611 | memcpy (contents + roff - 3, | |
3612 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05" | |
3613 | "\0\0\0\0\x66\x0f\x1f\x44\0", 22); | |
3614 | largepic = 1; | |
3615 | } | |
3616 | else | |
3617 | memcpy (contents + roff - 4, | |
3618 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
3619 | 16); | |
5c98a14e | 3620 | } |
52bc799a L |
3621 | else |
3622 | memcpy (contents + roff - 3, | |
3623 | "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
3624 | 15); | |
142411ca | 3625 | |
6de2ae4a L |
3626 | relocation = (htab->elf.sgot->output_section->vma |
3627 | + htab->elf.sgot->output_offset + off | |
142411ca | 3628 | - roff |
5c98a14e | 3629 | - largepic |
142411ca L |
3630 | - input_section->output_section->vma |
3631 | - input_section->output_offset | |
3632 | - 12); | |
3633 | bfd_put_32 (output_bfd, relocation, | |
5c98a14e JJ |
3634 | contents + roff + 8 + largepic); |
3635 | /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */ | |
142411ca | 3636 | rel++; |
60f2e42e | 3637 | wrel++; |
142411ca L |
3638 | continue; |
3639 | } | |
419414ea | 3640 | else if (r_type == R_X86_64_GOTPC32_TLSDESC) |
142411ca L |
3641 | { |
3642 | /* GDesc -> IE transition. | |
3643 | It's originally something like: | |
3644 | leaq x@tlsdesc(%rip), %rax | |
67a4f2b7 | 3645 | |
142411ca | 3646 | Change it to: |
c9736ba0 | 3647 | movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */ |
67a4f2b7 | 3648 | |
142411ca L |
3649 | /* Now modify the instruction as appropriate. To |
3650 | turn a leaq into a movq in the form we use it, it | |
3651 | suffices to change the second byte from 0x8d to | |
3652 | 0x8b. */ | |
3653 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
3654 | ||
3655 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
3656 | htab->elf.sgot->output_section->vma |
3657 | + htab->elf.sgot->output_offset + off | |
142411ca L |
3658 | - rel->r_offset |
3659 | - input_section->output_section->vma | |
3660 | - input_section->output_offset | |
3661 | - 4, | |
3662 | contents + roff); | |
3663 | continue; | |
3664 | } | |
419414ea | 3665 | else if (r_type == R_X86_64_TLSDESC_CALL) |
142411ca L |
3666 | { |
3667 | /* GDesc -> IE transition. | |
3668 | It's originally: | |
3669 | call *(%rax) | |
3670 | ||
3671 | Change it to: | |
c9736ba0 | 3672 | xchg %ax, %ax. */ |
142411ca | 3673 | |
142411ca L |
3674 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
3675 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); | |
3676 | continue; | |
3677 | } | |
3678 | else | |
3679 | BFD_ASSERT (FALSE); | |
67a4f2b7 | 3680 | } |
bffbf940 JJ |
3681 | break; |
3682 | ||
3683 | case R_X86_64_TLSLD: | |
351f65ca L |
3684 | if (! elf_x86_64_tls_transition (info, input_bfd, |
3685 | input_section, contents, | |
3686 | symtab_hdr, sym_hashes, | |
bedfd056 L |
3687 | &r_type, GOT_UNKNOWN, rel, |
3688 | relend, h, r_symndx, TRUE)) | |
142411ca | 3689 | return FALSE; |
a3fadc9a | 3690 | |
142411ca L |
3691 | if (r_type != R_X86_64_TLSLD) |
3692 | { | |
bffbf940 | 3693 | /* LD->LE transition: |
e2cbcd91 L |
3694 | leaq foo@tlsld(%rip), %rdi |
3695 | call __tls_get_addr@PLT | |
3696 | For 64bit, we change it into: | |
3697 | .word 0x6666; .byte 0x66; movq %fs:0, %rax | |
3698 | For 32bit, we change it into: | |
3699 | nopl 0x0(%rax); movl %fs:0, %eax | |
3700 | Or | |
3701 | leaq foo@tlsld(%rip), %rdi; | |
3702 | call *__tls_get_addr@GOTPCREL(%rip) | |
3703 | which may be converted to | |
3704 | addr32 call __tls_get_addr | |
52bc799a | 3705 | For 64bit, we change it into: |
e2cbcd91 | 3706 | .word 0x6666; .word 0x6666; movq %fs:0, %rax |
52bc799a | 3707 | For 32bit, we change it into: |
e2cbcd91 | 3708 | nopw 0x0(%rax); movl %fs:0, %eax |
5c98a14e | 3709 | For largepic, change: |
e2cbcd91 L |
3710 | leaq foo@tlsgd(%rip), %rdi |
3711 | movabsq $__tls_get_addr@pltoff, %rax | |
3712 | addq %rbx, %rax | |
3713 | call *%rax | |
3714 | into | |
3715 | data16 data16 data16 nopw %cs:0x0(%rax,%rax,1) | |
3716 | movq %fs:0, %eax */ | |
142411ca L |
3717 | |
3718 | BFD_ASSERT (r_type == R_X86_64_TPOFF32); | |
e2cbcd91 L |
3719 | if (ABI_64_P (output_bfd)) |
3720 | { | |
3721 | if (contents[rel->r_offset + 5] == 0xb8) | |
3722 | memcpy (contents + rel->r_offset - 3, | |
3723 | "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0" | |
3724 | "\x64\x48\x8b\x04\x25\0\0\0", 22); | |
3725 | else if (contents[rel->r_offset + 4] == 0xff | |
3726 | || contents[rel->r_offset + 4] == 0x67) | |
3727 | memcpy (contents + rel->r_offset - 3, | |
3728 | "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", | |
3729 | 13); | |
3730 | else | |
3731 | memcpy (contents + rel->r_offset - 3, | |
3732 | "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12); | |
3733 | } | |
52bc799a | 3734 | else |
e2cbcd91 L |
3735 | { |
3736 | if (contents[rel->r_offset + 4] == 0xff) | |
3737 | memcpy (contents + rel->r_offset - 3, | |
3738 | "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", | |
3739 | 13); | |
3740 | else | |
3741 | memcpy (contents + rel->r_offset - 3, | |
3742 | "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12); | |
3743 | } | |
3744 | /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX | |
3745 | and R_X86_64_PLTOFF64. */ | |
bffbf940 | 3746 | rel++; |
60f2e42e | 3747 | wrel++; |
bffbf940 JJ |
3748 | continue; |
3749 | } | |
3750 | ||
6de2ae4a | 3751 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
3752 | abort (); |
3753 | ||
0afcef53 | 3754 | off = htab->tls_ld_or_ldm_got.offset; |
bffbf940 JJ |
3755 | if (off & 1) |
3756 | off &= ~1; | |
3757 | else | |
3758 | { | |
3759 | Elf_Internal_Rela outrel; | |
bffbf940 | 3760 | |
6de2ae4a | 3761 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
3762 | abort (); |
3763 | ||
6de2ae4a L |
3764 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3765 | + htab->elf.sgot->output_offset + off); | |
bffbf940 JJ |
3766 | |
3767 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 3768 | htab->elf.sgot->contents + off); |
bffbf940 | 3769 | bfd_put_64 (output_bfd, 0, |
6de2ae4a | 3770 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
351f65ca | 3771 | outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64); |
bffbf940 | 3772 | outrel.r_addend = 0; |
351f65ca | 3773 | elf_append_rela (output_bfd, htab->elf.srelgot, |
464d3bd4 | 3774 | &outrel); |
0afcef53 | 3775 | htab->tls_ld_or_ldm_got.offset |= 1; |
bffbf940 | 3776 | } |
6de2ae4a L |
3777 | relocation = htab->elf.sgot->output_section->vma |
3778 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 3779 | unresolved_reloc = FALSE; |
bffbf940 JJ |
3780 | break; |
3781 | ||
3782 | case R_X86_64_DTPOFF32: | |
0e1862bb L |
3783 | if (!bfd_link_executable (info) |
3784 | || (input_section->flags & SEC_CODE) == 0) | |
0afcef53 | 3785 | relocation -= _bfd_x86_elf_dtpoff_base (info); |
bffbf940 | 3786 | else |
351f65ca | 3787 | relocation = elf_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
3788 | break; |
3789 | ||
3790 | case R_X86_64_TPOFF32: | |
6769d501 | 3791 | case R_X86_64_TPOFF64: |
0e1862bb | 3792 | BFD_ASSERT (bfd_link_executable (info)); |
351f65ca | 3793 | relocation = elf_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
3794 | break; |
3795 | ||
a69ed7f7 L |
3796 | case R_X86_64_DTPOFF64: |
3797 | BFD_ASSERT ((input_section->flags & SEC_CODE) == 0); | |
0afcef53 | 3798 | relocation -= _bfd_x86_elf_dtpoff_base (info); |
a69ed7f7 L |
3799 | break; |
3800 | ||
70256ad8 AJ |
3801 | default: |
3802 | break; | |
3803 | } | |
8d88c4ca | 3804 | |
239e1f3a AM |
3805 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3806 | because such sections are not SEC_ALLOC and thus ld.so will | |
3807 | not process them. */ | |
c434dee6 | 3808 | if (unresolved_reloc |
239e1f3a | 3809 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3810 | && h->def_dynamic) |
3811 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3812 | rel->r_offset) != (bfd_vma) -1) | |
a040981f | 3813 | { |
7073b5b9 L |
3814 | switch (r_type) |
3815 | { | |
3816 | case R_X86_64_32S: | |
a5b4ee94 L |
3817 | sec = h->root.u.def.section; |
3818 | if ((info->nocopyreloc | |
3819 | || (eh->def_protected | |
3820 | && elf_has_no_copy_on_protected (h->root.u.def.section->owner))) | |
7073b5b9 L |
3821 | && !(h->root.u.def.section->flags & SEC_CODE)) |
3822 | return elf_x86_64_need_pic (info, input_bfd, input_section, | |
3823 | h, NULL, NULL, howto); | |
3824 | /* Fall through. */ | |
3825 | ||
3826 | default: | |
3827 | _bfd_error_handler | |
3828 | /* xgettext:c-format */ | |
3829 | (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"), | |
3830 | input_bfd, | |
3831 | input_section, | |
3832 | rel->r_offset, | |
3833 | howto->name, | |
3834 | h->root.root.string); | |
3835 | return FALSE; | |
3836 | } | |
a040981f | 3837 | } |
c434dee6 | 3838 | |
cbe950e9 | 3839 | do_relocation: |
8d88c4ca | 3840 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
c434dee6 AJ |
3841 | contents, rel->r_offset, |
3842 | relocation, rel->r_addend); | |
8d88c4ca | 3843 | |
62d78908 | 3844 | check_relocation_error: |
8d88c4ca | 3845 | if (r != bfd_reloc_ok) |
8da6118f | 3846 | { |
c434dee6 AJ |
3847 | const char *name; |
3848 | ||
3849 | if (h != NULL) | |
3850 | name = h->root.root.string; | |
3851 | else | |
8da6118f | 3852 | { |
c434dee6 AJ |
3853 | name = bfd_elf_string_from_elf_section (input_bfd, |
3854 | symtab_hdr->sh_link, | |
3855 | sym->st_name); | |
3856 | if (name == NULL) | |
b34976b6 | 3857 | return FALSE; |
c434dee6 AJ |
3858 | if (*name == '\0') |
3859 | name = bfd_section_name (input_bfd, sec); | |
3860 | } | |
3861 | ||
3862 | if (r == bfd_reloc_overflow) | |
8b43e456 | 3863 | { |
78984959 | 3864 | if (converted_reloc) |
8b43e456 L |
3865 | { |
3866 | info->callbacks->einfo | |
3867 | (_("%F%P: failed to convert GOTPCREL relocation; relink with --no-relax\n")); | |
3868 | return FALSE; | |
3869 | } | |
3870 | (*info->callbacks->reloc_overflow) | |
3871 | (info, (h ? &h->root : NULL), name, howto->name, | |
3872 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
3873 | } | |
c434dee6 AJ |
3874 | else |
3875 | { | |
4eca0228 | 3876 | _bfd_error_handler |
695344c0 | 3877 | /* xgettext:c-format */ |
d42c267e | 3878 | (_("%B(%A+%#Lx): reloc against `%s': error %d"), |
d003868e | 3879 | input_bfd, input_section, |
d42c267e | 3880 | rel->r_offset, name, (int) r); |
b34976b6 | 3881 | return FALSE; |
8da6118f KH |
3882 | } |
3883 | } | |
60f2e42e L |
3884 | |
3885 | if (wrel != rel) | |
3886 | *wrel = *rel; | |
3887 | } | |
3888 | ||
3889 | if (wrel != rel) | |
3890 | { | |
3891 | Elf_Internal_Shdr *rel_hdr; | |
3892 | size_t deleted = rel - wrel; | |
3893 | ||
3894 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
3895 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
3896 | if (rel_hdr->sh_size == 0) | |
3897 | { | |
3898 | /* It is too late to remove an empty reloc section. Leave | |
3899 | one NONE reloc. | |
3900 | ??? What is wrong with an empty section??? */ | |
3901 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
3902 | deleted -= 1; | |
3903 | } | |
3904 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
3905 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
3906 | input_section->reloc_count -= deleted; | |
8d88c4ca | 3907 | } |
70256ad8 | 3908 | |
b34976b6 | 3909 | return TRUE; |
70256ad8 AJ |
3910 | } |
3911 | ||
3912 | /* Finish up dynamic symbol handling. We set the contents of various | |
3913 | dynamic sections here. */ | |
3914 | ||
b34976b6 | 3915 | static bfd_boolean |
351f65ca L |
3916 | elf_x86_64_finish_dynamic_symbol (bfd *output_bfd, |
3917 | struct bfd_link_info *info, | |
3918 | struct elf_link_hash_entry *h, | |
aec6b87e | 3919 | Elf_Internal_Sym *sym) |
70256ad8 | 3920 | { |
0afcef53 | 3921 | struct elf_x86_link_hash_table *htab; |
f2c29a16 | 3922 | bfd_boolean use_plt_second; |
0afcef53 | 3923 | struct elf_x86_link_hash_entry *eh; |
aec6b87e | 3924 | bfd_boolean local_undefweak; |
70256ad8 | 3925 | |
0afcef53 | 3926 | htab = elf_x86_hash_table (info, X86_64_ELF_DATA); |
4dfe6ac6 NC |
3927 | if (htab == NULL) |
3928 | return FALSE; | |
70256ad8 | 3929 | |
f2c29a16 L |
3930 | /* Use the second PLT section only if there is .plt section. */ |
3931 | use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL; | |
0ff2b86e | 3932 | |
0afcef53 | 3933 | eh = (struct elf_x86_link_hash_entry *) h; |
9e9821dd L |
3934 | if (eh->no_finish_dynamic_symbol) |
3935 | abort (); | |
dd7e64d4 | 3936 | |
aec6b87e L |
3937 | /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for |
3938 | resolved undefined weak symbols in executable so that their | |
3939 | references have value 0 at run-time. */ | |
c5bce5c6 | 3940 | local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh); |
aec6b87e | 3941 | |
70256ad8 AJ |
3942 | if (h->plt.offset != (bfd_vma) -1) |
3943 | { | |
70256ad8 | 3944 | bfd_vma plt_index; |
38b12349 | 3945 | bfd_vma got_offset, plt_offset; |
70256ad8 | 3946 | Elf_Internal_Rela rela; |
947216bf | 3947 | bfd_byte *loc; |
0ff2b86e | 3948 | asection *plt, *gotplt, *relplt, *resolved_plt; |
351f65ca | 3949 | const struct elf_backend_data *bed; |
5974eba6 | 3950 | bfd_vma plt_got_pcrel_offset; |
cbe950e9 L |
3951 | |
3952 | /* When building a static executable, use .iplt, .igot.plt and | |
3953 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 3954 | if (htab->elf.splt != NULL) |
cbe950e9 | 3955 | { |
6de2ae4a L |
3956 | plt = htab->elf.splt; |
3957 | gotplt = htab->elf.sgotplt; | |
3958 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
3959 | } |
3960 | else | |
3961 | { | |
6de2ae4a L |
3962 | plt = htab->elf.iplt; |
3963 | gotplt = htab->elf.igotplt; | |
3964 | relplt = htab->elf.irelplt; | |
cbe950e9 | 3965 | } |
70256ad8 AJ |
3966 | |
3967 | /* This symbol has an entry in the procedure linkage table. Set | |
407443a3 | 3968 | it up. */ |
cbe950e9 | 3969 | if ((h->dynindx == -1 |
aec6b87e | 3970 | && !local_undefweak |
0e1862bb | 3971 | && !((h->forced_local || bfd_link_executable (info)) |
cbe950e9 L |
3972 | && h->def_regular |
3973 | && h->type == STT_GNU_IFUNC)) | |
3974 | || plt == NULL | |
3975 | || gotplt == NULL | |
3976 | || relplt == NULL) | |
cec7f46a | 3977 | abort (); |
70256ad8 AJ |
3978 | |
3979 | /* Get the index in the procedure linkage table which | |
3980 | corresponds to this symbol. This is the index of this symbol | |
3981 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 3982 | first entry in the procedure linkage table is reserved. |
6bbec505 | 3983 | |
cbe950e9 | 3984 | Get the offset into the .got table of the entry that |
407443a3 | 3985 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE |
cbe950e9 L |
3986 | bytes. The first three are reserved for the dynamic linker. |
3987 | ||
3988 | For static executables, we don't reserve anything. */ | |
3989 | ||
6de2ae4a | 3990 | if (plt == htab->elf.splt) |
cbe950e9 | 3991 | { |
765e526c L |
3992 | got_offset = (h->plt.offset / htab->plt.plt_entry_size |
3993 | - htab->plt.has_plt0); | |
e1f98742 | 3994 | got_offset = (got_offset + 3) * GOT_ENTRY_SIZE; |
cbe950e9 L |
3995 | } |
3996 | else | |
3997 | { | |
765e526c | 3998 | got_offset = h->plt.offset / htab->plt.plt_entry_size; |
e1f98742 | 3999 | got_offset = got_offset * GOT_ENTRY_SIZE; |
cbe950e9 | 4000 | } |
70256ad8 | 4001 | |
38b12349 | 4002 | /* Fill in the entry in the procedure linkage table. */ |
765e526c L |
4003 | memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry, |
4004 | htab->plt.plt_entry_size); | |
f2c29a16 | 4005 | if (use_plt_second) |
0ff2b86e | 4006 | { |
f2c29a16 | 4007 | memcpy (htab->plt_second->contents + eh->plt_second.offset, |
765e526c L |
4008 | htab->non_lazy_plt->plt_entry, |
4009 | htab->non_lazy_plt->plt_entry_size); | |
0ff2b86e | 4010 | |
f2c29a16 L |
4011 | resolved_plt = htab->plt_second; |
4012 | plt_offset = eh->plt_second.offset; | |
0ff2b86e L |
4013 | } |
4014 | else | |
4015 | { | |
0ff2b86e L |
4016 | resolved_plt = plt; |
4017 | plt_offset = h->plt.offset; | |
4018 | } | |
eed180f8 RM |
4019 | |
4020 | /* Insert the relocation positions of the plt section. */ | |
4021 | ||
4022 | /* Put offset the PC-relative instruction referring to the GOT entry, | |
4023 | subtracting the size of that instruction. */ | |
ab7fede8 L |
4024 | plt_got_pcrel_offset = (gotplt->output_section->vma |
4025 | + gotplt->output_offset | |
4026 | + got_offset | |
4027 | - resolved_plt->output_section->vma | |
4028 | - resolved_plt->output_offset | |
4029 | - plt_offset | |
765e526c | 4030 | - htab->plt.plt_got_insn_size); |
ab7fede8 L |
4031 | |
4032 | /* Check PC-relative offset overflow in PLT entry. */ | |
5974eba6 | 4033 | if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff) |
695344c0 | 4034 | /* xgettext:c-format */ |
ab7fede8 L |
4035 | info->callbacks->einfo (_("%F%B: PC-relative offset overflow in PLT entry for `%s'\n"), |
4036 | output_bfd, h->root.root.string); | |
4037 | ||
4038 | bfd_put_32 (output_bfd, plt_got_pcrel_offset, | |
38b12349 | 4039 | (resolved_plt->contents + plt_offset |
765e526c | 4040 | + htab->plt.plt_got_offset)); |
cbe950e9 | 4041 | |
653165cc | 4042 | /* Fill in the entry in the global offset table, initially this |
aec6b87e L |
4043 | points to the second part of the PLT entry. Leave the entry |
4044 | as zero for undefined weak symbol in PIE. No PLT relocation | |
4045 | against undefined weak symbol in PIE. */ | |
4046 | if (!local_undefweak) | |
cbe950e9 | 4047 | { |
765e526c | 4048 | if (htab->plt.has_plt0) |
38b12349 L |
4049 | bfd_put_64 (output_bfd, (plt->output_section->vma |
4050 | + plt->output_offset | |
4051 | + h->plt.offset | |
765e526c | 4052 | + htab->lazy_plt->plt_lazy_offset), |
38b12349 | 4053 | gotplt->contents + got_offset); |
aec6b87e L |
4054 | |
4055 | /* Fill in the entry in the .rela.plt section. */ | |
4056 | rela.r_offset = (gotplt->output_section->vma | |
4057 | + gotplt->output_offset | |
4058 | + got_offset); | |
cf1070f1 | 4059 | if (PLT_LOCAL_IFUNC_P (info, h)) |
aec6b87e | 4060 | { |
6322e5c5 L |
4061 | info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"), |
4062 | h->root.root.string, | |
4063 | h->root.u.def.section->owner); | |
4064 | ||
aec6b87e L |
4065 | /* If an STT_GNU_IFUNC symbol is locally defined, generate |
4066 | R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */ | |
4067 | rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE); | |
4068 | rela.r_addend = (h->root.u.def.value | |
4069 | + h->root.u.def.section->output_section->vma | |
4070 | + h->root.u.def.section->output_offset); | |
4071 | /* R_X86_64_IRELATIVE comes last. */ | |
4072 | plt_index = htab->next_irelative_index--; | |
4073 | } | |
4074 | else | |
4075 | { | |
4076 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT); | |
4077 | rela.r_addend = 0; | |
4078 | plt_index = htab->next_jump_slot_index++; | |
4079 | } | |
e1f98742 | 4080 | |
38b12349 L |
4081 | /* Don't fill the second and third slots in PLT entry for |
4082 | static executables nor without PLT0. */ | |
765e526c | 4083 | if (plt == htab->elf.splt && htab->plt.has_plt0) |
aec6b87e | 4084 | { |
38b12349 | 4085 | bfd_vma plt0_offset |
765e526c | 4086 | = h->plt.offset + htab->lazy_plt->plt_plt_insn_end; |
aec6b87e L |
4087 | |
4088 | /* Put relocation index. */ | |
4089 | bfd_put_32 (output_bfd, plt_index, | |
4090 | (plt->contents + h->plt.offset | |
765e526c | 4091 | + htab->lazy_plt->plt_reloc_offset)); |
aec6b87e L |
4092 | |
4093 | /* Put offset for jmp .PLT0 and check for overflow. We don't | |
4094 | check relocation index for overflow since branch displacement | |
4095 | will overflow first. */ | |
4096 | if (plt0_offset > 0x80000000) | |
695344c0 | 4097 | /* xgettext:c-format */ |
aec6b87e L |
4098 | info->callbacks->einfo (_("%F%B: branch displacement overflow in PLT entry for `%s'\n"), |
4099 | output_bfd, h->root.root.string); | |
4100 | bfd_put_32 (output_bfd, - plt0_offset, | |
38b12349 | 4101 | (plt->contents + h->plt.offset |
765e526c | 4102 | + htab->lazy_plt->plt_plt_offset)); |
aec6b87e | 4103 | } |
351f65ca | 4104 | |
aec6b87e L |
4105 | bed = get_elf_backend_data (output_bfd); |
4106 | loc = relplt->contents + plt_index * bed->s->sizeof_rela; | |
4107 | bed->s->swap_reloca_out (output_bfd, &rela, loc); | |
4108 | } | |
dd7e64d4 L |
4109 | } |
4110 | else if (eh->plt_got.offset != (bfd_vma) -1) | |
4111 | { | |
38b12349 | 4112 | bfd_vma got_offset, plt_offset; |
dd7e64d4 L |
4113 | asection *plt, *got; |
4114 | bfd_boolean got_after_plt; | |
4115 | int32_t got_pcrel_offset; | |
dd7e64d4 L |
4116 | |
4117 | /* Set the entry in the GOT procedure linkage table. */ | |
4118 | plt = htab->plt_got; | |
4119 | got = htab->elf.sgot; | |
4120 | got_offset = h->got.offset; | |
4121 | ||
4122 | if (got_offset == (bfd_vma) -1 | |
e492d2f8 | 4123 | || (h->type == STT_GNU_IFUNC && h->def_regular) |
dd7e64d4 L |
4124 | || plt == NULL |
4125 | || got == NULL) | |
4126 | abort (); | |
70256ad8 | 4127 | |
38b12349 | 4128 | /* Use the non-lazy PLT entry template for the GOT PLT since they |
dd7e64d4 | 4129 | are the identical. */ |
dd7e64d4 L |
4130 | /* Fill in the entry in the GOT procedure linkage table. */ |
4131 | plt_offset = eh->plt_got.offset; | |
4132 | memcpy (plt->contents + plt_offset, | |
765e526c L |
4133 | htab->non_lazy_plt->plt_entry, |
4134 | htab->non_lazy_plt->plt_entry_size); | |
dd7e64d4 L |
4135 | |
4136 | /* Put offset the PC-relative instruction referring to the GOT | |
4137 | entry, subtracting the size of that instruction. */ | |
4138 | got_pcrel_offset = (got->output_section->vma | |
4139 | + got->output_offset | |
4140 | + got_offset | |
4141 | - plt->output_section->vma | |
4142 | - plt->output_offset | |
4143 | - plt_offset | |
765e526c | 4144 | - htab->non_lazy_plt->plt_got_insn_size); |
dd7e64d4 L |
4145 | |
4146 | /* Check PC-relative offset overflow in GOT PLT entry. */ | |
4147 | got_after_plt = got->output_section->vma > plt->output_section->vma; | |
4148 | if ((got_after_plt && got_pcrel_offset < 0) | |
4149 | || (!got_after_plt && got_pcrel_offset > 0)) | |
695344c0 | 4150 | /* xgettext:c-format */ |
dd7e64d4 L |
4151 | info->callbacks->einfo (_("%F%B: PC-relative offset overflow in GOT PLT entry for `%s'\n"), |
4152 | output_bfd, h->root.root.string); | |
4153 | ||
4154 | bfd_put_32 (output_bfd, got_pcrel_offset, | |
38b12349 | 4155 | (plt->contents + plt_offset |
765e526c | 4156 | + htab->non_lazy_plt->plt_got_offset)); |
dd7e64d4 L |
4157 | } |
4158 | ||
aec6b87e L |
4159 | if (!local_undefweak |
4160 | && !h->def_regular | |
dd7e64d4 L |
4161 | && (h->plt.offset != (bfd_vma) -1 |
4162 | || eh->plt_got.offset != (bfd_vma) -1)) | |
4163 | { | |
4164 | /* Mark the symbol as undefined, rather than as defined in | |
4165 | the .plt section. Leave the value if there were any | |
4166 | relocations where pointer equality matters (this is a clue | |
4167 | for the dynamic linker, to make function pointer | |
4168 | comparisons work between an application and shared | |
4169 | library), otherwise set it to zero. If a function is only | |
4170 | called from a binary, there is no need to slow down | |
4171 | shared libraries because of that. */ | |
4172 | sym->st_shndx = SHN_UNDEF; | |
4173 | if (!h->pointer_equality_needed) | |
4174 | sym->st_value = 0; | |
70256ad8 AJ |
4175 | } |
4176 | ||
aec6b87e L |
4177 | /* Don't generate dynamic GOT relocation against undefined weak |
4178 | symbol in executable. */ | |
bffbf940 | 4179 | if (h->got.offset != (bfd_vma) -1 |
0afcef53 L |
4180 | && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry (h)->tls_type) |
4181 | && elf_x86_hash_entry (h)->tls_type != GOT_TLS_IE | |
aec6b87e | 4182 | && !local_undefweak) |
053579d7 | 4183 | { |
053579d7 | 4184 | Elf_Internal_Rela rela; |
233cc9c1 | 4185 | asection *relgot = htab->elf.srelgot; |
053579d7 AJ |
4186 | |
4187 | /* This symbol has an entry in the global offset table. Set it | |
bffbf940 | 4188 | up. */ |
6de2ae4a | 4189 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
c434dee6 | 4190 | abort (); |
053579d7 | 4191 | |
6de2ae4a L |
4192 | rela.r_offset = (htab->elf.sgot->output_section->vma |
4193 | + htab->elf.sgot->output_offset | |
dc810e39 | 4194 | + (h->got.offset &~ (bfd_vma) 1)); |
053579d7 AJ |
4195 | |
4196 | /* If this is a static link, or it is a -Bsymbolic link and the | |
4197 | symbol is defined locally or was forced to be local because | |
4198 | of a version file, we just want to emit a RELATIVE reloc. | |
4199 | The entry in the global offset table will already have been | |
4200 | initialized in the relocate_section function. */ | |
710ab287 | 4201 | if (h->def_regular |
0018b0a3 L |
4202 | && h->type == STT_GNU_IFUNC) |
4203 | { | |
233cc9c1 L |
4204 | if (h->plt.offset == (bfd_vma) -1) |
4205 | { | |
4206 | /* STT_GNU_IFUNC is referenced without PLT. */ | |
4207 | if (htab->elf.splt == NULL) | |
4208 | { | |
4209 | /* use .rel[a].iplt section to store .got relocations | |
4210 | in static executable. */ | |
4211 | relgot = htab->elf.irelplt; | |
4212 | } | |
6999821f | 4213 | if (SYMBOL_REFERENCES_LOCAL_P (info, h)) |
233cc9c1 | 4214 | { |
6322e5c5 | 4215 | info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"), |
6322e5c5 L |
4216 | h->root.root.string, |
4217 | h->root.u.def.section->owner); | |
4218 | ||
233cc9c1 L |
4219 | rela.r_info = htab->r_info (0, |
4220 | R_X86_64_IRELATIVE); | |
4221 | rela.r_addend = (h->root.u.def.value | |
4222 | + h->root.u.def.section->output_section->vma | |
4223 | + h->root.u.def.section->output_offset); | |
4224 | } | |
4225 | else | |
4226 | goto do_glob_dat; | |
4227 | } | |
4228 | else if (bfd_link_pic (info)) | |
710ab287 L |
4229 | { |
4230 | /* Generate R_X86_64_GLOB_DAT. */ | |
4231 | goto do_glob_dat; | |
4232 | } | |
4233 | else | |
4234 | { | |
90d60710 | 4235 | asection *plt; |
aab82f4c | 4236 | bfd_vma plt_offset; |
90d60710 | 4237 | |
710ab287 L |
4238 | if (!h->pointer_equality_needed) |
4239 | abort (); | |
4240 | ||
4241 | /* For non-shared object, we can't use .got.plt, which | |
4242 | contains the real function addres if we need pointer | |
4243 | equality. We load the GOT entry with the PLT entry. */ | |
f2c29a16 | 4244 | if (htab->plt_second != NULL) |
aab82f4c | 4245 | { |
f2c29a16 L |
4246 | plt = htab->plt_second; |
4247 | plt_offset = eh->plt_second.offset; | |
aab82f4c L |
4248 | } |
4249 | else | |
4250 | { | |
4251 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; | |
4252 | plt_offset = h->plt.offset; | |
4253 | } | |
710ab287 L |
4254 | bfd_put_64 (output_bfd, (plt->output_section->vma |
4255 | + plt->output_offset | |
aab82f4c | 4256 | + plt_offset), |
6de2ae4a | 4257 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
4258 | return TRUE; |
4259 | } | |
0018b0a3 | 4260 | } |
0e1862bb | 4261 | else if (bfd_link_pic (info) |
6999821f | 4262 | && SYMBOL_REFERENCES_LOCAL_P (info, h)) |
053579d7 | 4263 | { |
ad71ce8d | 4264 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
41bed6dd | 4265 | return FALSE; |
cc78d0af | 4266 | BFD_ASSERT((h->got.offset & 1) != 0); |
351f65ca | 4267 | rela.r_info = htab->r_info (0, R_X86_64_RELATIVE); |
053579d7 AJ |
4268 | rela.r_addend = (h->root.u.def.value |
4269 | + h->root.u.def.section->output_section->vma | |
4270 | + h->root.u.def.section->output_offset); | |
4271 | } | |
4272 | else | |
4273 | { | |
4274 | BFD_ASSERT((h->got.offset & 1) == 0); | |
710ab287 | 4275 | do_glob_dat: |
c434dee6 | 4276 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 4277 | htab->elf.sgot->contents + h->got.offset); |
351f65ca | 4278 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT); |
053579d7 AJ |
4279 | rela.r_addend = 0; |
4280 | } | |
4281 | ||
233cc9c1 | 4282 | elf_append_rela (output_bfd, relgot, &rela); |
053579d7 AJ |
4283 | } |
4284 | ||
f5385ebf | 4285 | if (h->needs_copy) |
70256ad8 | 4286 | { |
70256ad8 | 4287 | Elf_Internal_Rela rela; |
5474d94f | 4288 | asection *s; |
70256ad8 AJ |
4289 | |
4290 | /* This symbol needs a copy reloc. Set it up. */ | |
4291 | ||
c434dee6 AJ |
4292 | if (h->dynindx == -1 |
4293 | || (h->root.type != bfd_link_hash_defined | |
4294 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
4295 | || htab->elf.srelbss == NULL |
4296 | || htab->elf.sreldynrelro == NULL) | |
c434dee6 | 4297 | abort (); |
70256ad8 AJ |
4298 | |
4299 | rela.r_offset = (h->root.u.def.value | |
4300 | + h->root.u.def.section->output_section->vma | |
4301 | + h->root.u.def.section->output_offset); | |
351f65ca | 4302 | rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY); |
70256ad8 | 4303 | rela.r_addend = 0; |
afbf7e8e | 4304 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
4305 | s = htab->elf.sreldynrelro; |
4306 | else | |
4307 | s = htab->elf.srelbss; | |
4308 | elf_append_rela (output_bfd, s, &rela); | |
70256ad8 AJ |
4309 | } |
4310 | ||
b34976b6 | 4311 | return TRUE; |
70256ad8 AJ |
4312 | } |
4313 | ||
c25bc9fc L |
4314 | /* Finish up local dynamic symbol handling. We set the contents of |
4315 | various dynamic sections here. */ | |
4316 | ||
4317 | static bfd_boolean | |
351f65ca | 4318 | elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf) |
c25bc9fc L |
4319 | { |
4320 | struct elf_link_hash_entry *h | |
4321 | = (struct elf_link_hash_entry *) *slot; | |
4322 | struct bfd_link_info *info | |
eed180f8 | 4323 | = (struct bfd_link_info *) inf; |
c25bc9fc | 4324 | |
351f65ca | 4325 | return elf_x86_64_finish_dynamic_symbol (info->output_bfd, |
5f0f0847 | 4326 | info, h, NULL); |
c25bc9fc L |
4327 | } |
4328 | ||
aec6b87e L |
4329 | /* Finish up undefined weak symbol handling in PIE. Fill its PLT entry |
4330 | here since undefined weak symbol may not be dynamic and may not be | |
4331 | called for elf_x86_64_finish_dynamic_symbol. */ | |
4332 | ||
4333 | static bfd_boolean | |
4334 | elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh, | |
4335 | void *inf) | |
4336 | { | |
4337 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh; | |
4338 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
4339 | ||
4340 | if (h->root.type != bfd_link_hash_undefweak | |
4341 | || h->dynindx != -1) | |
4342 | return TRUE; | |
4343 | ||
4344 | return elf_x86_64_finish_dynamic_symbol (info->output_bfd, | |
5f0f0847 | 4345 | info, h, NULL); |
aec6b87e L |
4346 | } |
4347 | ||
c434dee6 AJ |
4348 | /* Used to decide how to sort relocs in an optimal manner for the |
4349 | dynamic linker, before writing them out. */ | |
4350 | ||
4351 | static enum elf_reloc_type_class | |
cae1fbbb | 4352 | elf_x86_64_reloc_type_class (const struct bfd_link_info *info, |
7e612e98 AM |
4353 | const asection *rel_sec ATTRIBUTE_UNUSED, |
4354 | const Elf_Internal_Rela *rela) | |
c434dee6 | 4355 | { |
cae1fbbb L |
4356 | bfd *abfd = info->output_bfd; |
4357 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
0afcef53 L |
4358 | struct elf_x86_link_hash_table *htab |
4359 | = elf_x86_hash_table (info, X86_64_ELF_DATA); | |
cae1fbbb | 4360 | |
d9e3b590 L |
4361 | if (htab->elf.dynsym != NULL |
4362 | && htab->elf.dynsym->contents != NULL) | |
4363 | { | |
4364 | /* Check relocation against STT_GNU_IFUNC symbol if there are | |
4365 | dynamic symbols. */ | |
4366 | unsigned long r_symndx = htab->r_sym (rela->r_info); | |
897463b1 L |
4367 | if (r_symndx != STN_UNDEF) |
4368 | { | |
4369 | Elf_Internal_Sym sym; | |
4370 | if (!bed->s->swap_symbol_in (abfd, | |
4371 | (htab->elf.dynsym->contents | |
4372 | + r_symndx * bed->s->sizeof_sym), | |
4373 | 0, &sym)) | |
4374 | abort (); | |
d9e3b590 | 4375 | |
897463b1 L |
4376 | if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) |
4377 | return reloc_class_ifunc; | |
4378 | } | |
d9e3b590 | 4379 | } |
cae1fbbb | 4380 | |
351f65ca | 4381 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
c434dee6 | 4382 | { |
c428ce9d L |
4383 | case R_X86_64_IRELATIVE: |
4384 | return reloc_class_ifunc; | |
c434dee6 | 4385 | case R_X86_64_RELATIVE: |
1da80baa | 4386 | case R_X86_64_RELATIVE64: |
c434dee6 AJ |
4387 | return reloc_class_relative; |
4388 | case R_X86_64_JUMP_SLOT: | |
4389 | return reloc_class_plt; | |
4390 | case R_X86_64_COPY: | |
4391 | return reloc_class_copy; | |
4392 | default: | |
4393 | return reloc_class_normal; | |
4394 | } | |
4395 | } | |
4396 | ||
70256ad8 AJ |
4397 | /* Finish up the dynamic sections. */ |
4398 | ||
b34976b6 | 4399 | static bfd_boolean |
351f65ca L |
4400 | elf_x86_64_finish_dynamic_sections (bfd *output_bfd, |
4401 | struct bfd_link_info *info) | |
70256ad8 | 4402 | { |
0afcef53 | 4403 | struct elf_x86_link_hash_table *htab; |
70256ad8 AJ |
4404 | bfd *dynobj; |
4405 | asection *sdyn; | |
70256ad8 | 4406 | |
0afcef53 | 4407 | htab = elf_x86_hash_table (info, X86_64_ELF_DATA); |
4dfe6ac6 NC |
4408 | if (htab == NULL) |
4409 | return FALSE; | |
4410 | ||
c434dee6 | 4411 | dynobj = htab->elf.dynobj; |
3d4d4302 | 4412 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
70256ad8 | 4413 | |
c434dee6 | 4414 | if (htab->elf.dynamic_sections_created) |
70256ad8 | 4415 | { |
82e96e07 L |
4416 | bfd_byte *dyncon, *dynconend; |
4417 | const struct elf_backend_data *bed; | |
4418 | bfd_size_type sizeof_dyn; | |
70256ad8 | 4419 | |
6de2ae4a | 4420 | if (sdyn == NULL || htab->elf.sgot == NULL) |
c434dee6 | 4421 | abort (); |
70256ad8 | 4422 | |
82e96e07 L |
4423 | bed = get_elf_backend_data (dynobj); |
4424 | sizeof_dyn = bed->s->sizeof_dyn; | |
4425 | dyncon = sdyn->contents; | |
4426 | dynconend = sdyn->contents + sdyn->size; | |
4427 | for (; dyncon < dynconend; dyncon += sizeof_dyn) | |
70256ad8 AJ |
4428 | { |
4429 | Elf_Internal_Dyn dyn; | |
70256ad8 AJ |
4430 | asection *s; |
4431 | ||
82e96e07 | 4432 | (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn); |
70256ad8 AJ |
4433 | |
4434 | switch (dyn.d_tag) | |
4435 | { | |
4436 | default: | |
053579d7 | 4437 | continue; |
70256ad8 AJ |
4438 | |
4439 | case DT_PLTGOT: | |
6de2ae4a | 4440 | s = htab->elf.sgotplt; |
8c37241b | 4441 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
c434dee6 | 4442 | break; |
70256ad8 AJ |
4443 | |
4444 | case DT_JMPREL: | |
6de2ae4a | 4445 | dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma; |
c434dee6 | 4446 | break; |
70256ad8 | 4447 | |
c434dee6 | 4448 | case DT_PLTRELSZ: |
6de2ae4a | 4449 | s = htab->elf.srelplt->output_section; |
eea6121a | 4450 | dyn.d_un.d_val = s->size; |
70256ad8 AJ |
4451 | break; |
4452 | ||
67a4f2b7 | 4453 | case DT_TLSDESC_PLT: |
6de2ae4a | 4454 | s = htab->elf.splt; |
67a4f2b7 AO |
4455 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
4456 | + htab->tlsdesc_plt; | |
4457 | break; | |
4458 | ||
4459 | case DT_TLSDESC_GOT: | |
6de2ae4a | 4460 | s = htab->elf.sgot; |
67a4f2b7 AO |
4461 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
4462 | + htab->tlsdesc_got; | |
4463 | break; | |
70256ad8 | 4464 | } |
c434dee6 | 4465 | |
82e96e07 | 4466 | (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon); |
70256ad8 AJ |
4467 | } |
4468 | ||
6de2ae4a | 4469 | if (htab->elf.splt && htab->elf.splt->size > 0) |
70256ad8 | 4470 | { |
eed180f8 | 4471 | elf_section_data (htab->elf.splt->output_section) |
765e526c | 4472 | ->this_hdr.sh_entsize = htab->plt.plt_entry_size; |
67a4f2b7 | 4473 | |
765e526c | 4474 | if (htab->plt.has_plt0) |
67a4f2b7 | 4475 | { |
38b12349 L |
4476 | /* Fill in the special first entry in the procedure linkage |
4477 | table. */ | |
4478 | memcpy (htab->elf.splt->contents, | |
765e526c L |
4479 | htab->lazy_plt->plt0_entry, |
4480 | htab->lazy_plt->plt0_entry_size); | |
38b12349 L |
4481 | /* Add offset for pushq GOT+8(%rip), since the instruction |
4482 | uses 6 bytes subtract this value. */ | |
67a4f2b7 | 4483 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4484 | (htab->elf.sgotplt->output_section->vma |
4485 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 | 4486 | + 8 |
6de2ae4a L |
4487 | - htab->elf.splt->output_section->vma |
4488 | - htab->elf.splt->output_offset | |
67a4f2b7 | 4489 | - 6), |
38b12349 | 4490 | (htab->elf.splt->contents |
765e526c | 4491 | + htab->lazy_plt->plt0_got1_offset)); |
38b12349 L |
4492 | /* Add offset for the PC-relative instruction accessing |
4493 | GOT+16, subtracting the offset to the end of that | |
4494 | instruction. */ | |
67a4f2b7 | 4495 | bfd_put_32 (output_bfd, |
38b12349 L |
4496 | (htab->elf.sgotplt->output_section->vma |
4497 | + htab->elf.sgotplt->output_offset | |
4498 | + 16 | |
6de2ae4a L |
4499 | - htab->elf.splt->output_section->vma |
4500 | - htab->elf.splt->output_offset | |
765e526c | 4501 | - htab->lazy_plt->plt0_got2_insn_end), |
38b12349 | 4502 | (htab->elf.splt->contents |
765e526c | 4503 | + htab->lazy_plt->plt0_got2_offset)); |
38b12349 L |
4504 | |
4505 | if (htab->tlsdesc_plt) | |
4506 | { | |
4507 | bfd_put_64 (output_bfd, (bfd_vma) 0, | |
4508 | htab->elf.sgot->contents + htab->tlsdesc_got); | |
4509 | ||
4510 | memcpy (htab->elf.splt->contents + htab->tlsdesc_plt, | |
765e526c L |
4511 | htab->lazy_plt->plt0_entry, |
4512 | htab->lazy_plt->plt0_entry_size); | |
38b12349 L |
4513 | |
4514 | /* Add offset for pushq GOT+8(%rip), since the | |
4515 | instruction uses 6 bytes subtract this value. */ | |
4516 | bfd_put_32 (output_bfd, | |
4517 | (htab->elf.sgotplt->output_section->vma | |
4518 | + htab->elf.sgotplt->output_offset | |
4519 | + 8 | |
4520 | - htab->elf.splt->output_section->vma | |
4521 | - htab->elf.splt->output_offset | |
4522 | - htab->tlsdesc_plt | |
4523 | - 6), | |
4524 | (htab->elf.splt->contents | |
4525 | + htab->tlsdesc_plt | |
765e526c | 4526 | + htab->lazy_plt->plt0_got1_offset)); |
38b12349 L |
4527 | /* Add offset for the PC-relative instruction accessing |
4528 | GOT+TDG, where TDG stands for htab->tlsdesc_got, | |
4529 | subtracting the offset to the end of that | |
4530 | instruction. */ | |
4531 | bfd_put_32 (output_bfd, | |
4532 | (htab->elf.sgot->output_section->vma | |
4533 | + htab->elf.sgot->output_offset | |
4534 | + htab->tlsdesc_got | |
4535 | - htab->elf.splt->output_section->vma | |
4536 | - htab->elf.splt->output_offset | |
4537 | - htab->tlsdesc_plt | |
765e526c | 4538 | - htab->lazy_plt->plt0_got2_insn_end), |
38b12349 L |
4539 | (htab->elf.splt->contents |
4540 | + htab->tlsdesc_plt | |
765e526c | 4541 | + htab->lazy_plt->plt0_got2_offset)); |
38b12349 | 4542 | } |
67a4f2b7 | 4543 | } |
70256ad8 | 4544 | } |
70256ad8 | 4545 | |
0afcef53 L |
4546 | if (htab->plt_got != NULL && htab->plt_got->size > 0) |
4547 | elf_section_data (htab->plt_got->output_section) | |
765e526c | 4548 | ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size; |
38b12349 | 4549 | |
0afcef53 L |
4550 | if (htab->plt_second != NULL && htab->plt_second->size > 0) |
4551 | elf_section_data (htab->plt_second->output_section) | |
765e526c | 4552 | ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size; |
0afcef53 | 4553 | } |
0ff2b86e | 4554 | |
38b12349 L |
4555 | /* GOT is always created in setup_gnu_properties. But it may not be |
4556 | needed. */ | |
4557 | if (htab->elf.sgotplt && htab->elf.sgotplt->size > 0) | |
70256ad8 | 4558 | { |
56d4289c L |
4559 | if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) |
4560 | { | |
4eca0228 | 4561 | _bfd_error_handler |
56d4289c L |
4562 | (_("discarded output section: `%A'"), htab->elf.sgotplt); |
4563 | return FALSE; | |
4564 | } | |
4565 | ||
38b12349 L |
4566 | /* Set the first entry in the global offset table to the address of |
4567 | the dynamic section. */ | |
4568 | if (sdyn == NULL) | |
4569 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents); | |
4570 | else | |
4571 | bfd_put_64 (output_bfd, | |
4572 | sdyn->output_section->vma + sdyn->output_offset, | |
4573 | htab->elf.sgotplt->contents); | |
4574 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ | |
4575 | bfd_put_64 (output_bfd, (bfd_vma) 0, | |
4576 | htab->elf.sgotplt->contents + GOT_ENTRY_SIZE); | |
4577 | bfd_put_64 (output_bfd, (bfd_vma) 0, | |
4578 | htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2); | |
4579 | ||
4580 | elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize | |
4581 | = GOT_ENTRY_SIZE; | |
c434dee6 | 4582 | } |
70256ad8 | 4583 | |
e41b3a13 | 4584 | /* Adjust .eh_frame for .plt section. */ |
9a2a56cc AM |
4585 | if (htab->plt_eh_frame != NULL |
4586 | && htab->plt_eh_frame->contents != NULL) | |
e41b3a13 JJ |
4587 | { |
4588 | if (htab->elf.splt != NULL | |
4589 | && htab->elf.splt->size != 0 | |
4590 | && (htab->elf.splt->flags & SEC_EXCLUDE) == 0 | |
4591 | && htab->elf.splt->output_section != NULL | |
4592 | && htab->plt_eh_frame->output_section != NULL) | |
4593 | { | |
4594 | bfd_vma plt_start = htab->elf.splt->output_section->vma; | |
4595 | bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma | |
4596 | + htab->plt_eh_frame->output_offset | |
4597 | + PLT_FDE_START_OFFSET; | |
4598 | bfd_put_signed_32 (dynobj, plt_start - eh_frame_start, | |
4599 | htab->plt_eh_frame->contents | |
4600 | + PLT_FDE_START_OFFSET); | |
4601 | } | |
dbaa2011 | 4602 | if (htab->plt_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME) |
e41b3a13 JJ |
4603 | { |
4604 | if (! _bfd_elf_write_section_eh_frame (output_bfd, info, | |
4605 | htab->plt_eh_frame, | |
4606 | htab->plt_eh_frame->contents)) | |
4607 | return FALSE; | |
4608 | } | |
4609 | } | |
4610 | ||
fff53dae L |
4611 | /* Adjust .eh_frame for .plt.got section. */ |
4612 | if (htab->plt_got_eh_frame != NULL | |
4613 | && htab->plt_got_eh_frame->contents != NULL) | |
4614 | { | |
4615 | if (htab->plt_got != NULL | |
4616 | && htab->plt_got->size != 0 | |
4617 | && (htab->plt_got->flags & SEC_EXCLUDE) == 0 | |
4618 | && htab->plt_got->output_section != NULL | |
4619 | && htab->plt_got_eh_frame->output_section != NULL) | |
4620 | { | |
4621 | bfd_vma plt_start = htab->plt_got->output_section->vma; | |
4622 | bfd_vma eh_frame_start = htab->plt_got_eh_frame->output_section->vma | |
4623 | + htab->plt_got_eh_frame->output_offset | |
4624 | + PLT_FDE_START_OFFSET; | |
4625 | bfd_put_signed_32 (dynobj, plt_start - eh_frame_start, | |
4626 | htab->plt_got_eh_frame->contents | |
4627 | + PLT_FDE_START_OFFSET); | |
4628 | } | |
4629 | if (htab->plt_got_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME) | |
4630 | { | |
4631 | if (! _bfd_elf_write_section_eh_frame (output_bfd, info, | |
4632 | htab->plt_got_eh_frame, | |
4633 | htab->plt_got_eh_frame->contents)) | |
4634 | return FALSE; | |
4635 | } | |
4636 | } | |
4637 | ||
f2c29a16 L |
4638 | /* Adjust .eh_frame for the second PLT section. */ |
4639 | if (htab->plt_second_eh_frame != NULL | |
4640 | && htab->plt_second_eh_frame->contents != NULL) | |
8361ed4d | 4641 | { |
f2c29a16 L |
4642 | if (htab->plt_second != NULL |
4643 | && htab->plt_second->size != 0 | |
4644 | && (htab->plt_second->flags & SEC_EXCLUDE) == 0 | |
4645 | && htab->plt_second->output_section != NULL | |
4646 | && htab->plt_second_eh_frame->output_section != NULL) | |
8361ed4d | 4647 | { |
f2c29a16 L |
4648 | bfd_vma plt_start = htab->plt_second->output_section->vma; |
4649 | bfd_vma eh_frame_start | |
4650 | = (htab->plt_second_eh_frame->output_section->vma | |
4651 | + htab->plt_second_eh_frame->output_offset | |
4652 | + PLT_FDE_START_OFFSET); | |
8361ed4d | 4653 | bfd_put_signed_32 (dynobj, plt_start - eh_frame_start, |
f2c29a16 | 4654 | htab->plt_second_eh_frame->contents |
8361ed4d L |
4655 | + PLT_FDE_START_OFFSET); |
4656 | } | |
f2c29a16 L |
4657 | if (htab->plt_second_eh_frame->sec_info_type |
4658 | == SEC_INFO_TYPE_EH_FRAME) | |
8361ed4d L |
4659 | { |
4660 | if (! _bfd_elf_write_section_eh_frame (output_bfd, info, | |
f2c29a16 L |
4661 | htab->plt_second_eh_frame, |
4662 | htab->plt_second_eh_frame->contents)) | |
8361ed4d L |
4663 | return FALSE; |
4664 | } | |
4665 | } | |
4666 | ||
6de2ae4a L |
4667 | if (htab->elf.sgot && htab->elf.sgot->size > 0) |
4668 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize | |
8c37241b JJ |
4669 | = GOT_ENTRY_SIZE; |
4670 | ||
aec6b87e L |
4671 | /* Fill PLT entries for undefined weak symbols in PIE. */ |
4672 | if (bfd_link_pie (info)) | |
4673 | bfd_hash_traverse (&info->hash->table, | |
4674 | elf_x86_64_pie_finish_undefweak_symbol, | |
4675 | info); | |
4676 | ||
b34976b6 | 4677 | return TRUE; |
8d88c4ca NC |
4678 | } |
4679 | ||
233cc9c1 L |
4680 | /* Fill PLT/GOT entries and allocate dynamic relocations for local |
4681 | STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table. | |
4682 | It has to be done before elf_link_sort_relocs is called so that | |
4683 | dynamic relocations are properly sorted. */ | |
4684 | ||
4685 | static bfd_boolean | |
4686 | elf_x86_64_output_arch_local_syms | |
4687 | (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4688 | struct bfd_link_info *info, | |
4689 | void *flaginfo ATTRIBUTE_UNUSED, | |
4690 | int (*func) (void *, const char *, | |
4691 | Elf_Internal_Sym *, | |
4692 | asection *, | |
4693 | struct elf_link_hash_entry *) ATTRIBUTE_UNUSED) | |
4694 | { | |
0afcef53 L |
4695 | struct elf_x86_link_hash_table *htab |
4696 | = elf_x86_hash_table (info, X86_64_ELF_DATA); | |
233cc9c1 L |
4697 | if (htab == NULL) |
4698 | return FALSE; | |
4699 | ||
4700 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ | |
4701 | htab_traverse (htab->loc_hash_table, | |
4702 | elf_x86_64_finish_local_dynamic_symbol, | |
4703 | info); | |
4704 | ||
4705 | return TRUE; | |
4706 | } | |
4707 | ||
38b12349 | 4708 | /* Forward declaration. */ |
765e526c | 4709 | static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt; |
38b12349 L |
4710 | |
4711 | /* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all | |
4712 | dynamic relocations. */ | |
4713 | ||
4714 | static long | |
4715 | elf_x86_64_get_synthetic_symtab (bfd *abfd, | |
4716 | long symcount ATTRIBUTE_UNUSED, | |
4717 | asymbol **syms ATTRIBUTE_UNUSED, | |
4718 | long dynsymcount, | |
4719 | asymbol **dynsyms, | |
4720 | asymbol **ret) | |
4721 | { | |
f493882d | 4722 | long count, i, n; |
38b12349 | 4723 | int j; |
38b12349 | 4724 | bfd_byte *plt_contents; |
f493882d | 4725 | long relsize; |
765e526c L |
4726 | const struct elf_x86_lazy_plt_layout *lazy_plt; |
4727 | const struct elf_x86_non_lazy_plt_layout *non_lazy_plt; | |
4728 | const struct elf_x86_lazy_plt_layout *lazy_bnd_plt; | |
4729 | const struct elf_x86_non_lazy_plt_layout *non_lazy_bnd_plt; | |
4730 | const struct elf_x86_lazy_plt_layout *lazy_ibt_plt; | |
4731 | const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt; | |
38b12349 | 4732 | asection *plt; |
f493882d L |
4733 | enum elf_x86_plt_type plt_type; |
4734 | struct elf_x86_plt plts[] = | |
144bed8d | 4735 | { |
38b12349 L |
4736 | { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 }, |
4737 | { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }, | |
f2c29a16 L |
4738 | { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 }, |
4739 | { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 }, | |
dd9e66ee | 4740 | { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 } |
38b12349 | 4741 | }; |
144bed8d | 4742 | |
38b12349 | 4743 | *ret = NULL; |
144bed8d | 4744 | |
38b12349 L |
4745 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
4746 | return 0; | |
144bed8d | 4747 | |
38b12349 L |
4748 | if (dynsymcount <= 0) |
4749 | return 0; | |
cca5b8b6 | 4750 | |
38b12349 L |
4751 | relsize = bfd_get_dynamic_reloc_upper_bound (abfd); |
4752 | if (relsize <= 0) | |
4753 | return -1; | |
4754 | ||
38b12349 | 4755 | if (get_elf_x86_64_backend_data (abfd)->os == is_normal) |
144bed8d | 4756 | { |
38b12349 L |
4757 | lazy_plt = &elf_x86_64_lazy_plt; |
4758 | non_lazy_plt = &elf_x86_64_non_lazy_plt; | |
4759 | lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt; | |
4760 | non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt; | |
ee2fdd6f L |
4761 | if (ABI_64_P (abfd)) |
4762 | { | |
4763 | lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt; | |
4764 | non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt; | |
4765 | } | |
4766 | else | |
4767 | { | |
4768 | lazy_ibt_plt = &elf_x32_lazy_ibt_plt; | |
4769 | non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt; | |
4770 | } | |
38b12349 L |
4771 | } |
4772 | else | |
4773 | { | |
4774 | lazy_plt = &elf_x86_64_nacl_plt; | |
4775 | non_lazy_plt = NULL; | |
4776 | lazy_bnd_plt = NULL; | |
4777 | non_lazy_bnd_plt = NULL; | |
ee2fdd6f L |
4778 | lazy_ibt_plt = NULL; |
4779 | non_lazy_ibt_plt = NULL; | |
38b12349 | 4780 | } |
144bed8d | 4781 | |
38b12349 L |
4782 | count = 0; |
4783 | for (j = 0; plts[j].name != NULL; j++) | |
4784 | { | |
4785 | plt = bfd_get_section_by_name (abfd, plts[j].name); | |
90efb642 | 4786 | if (plt == NULL || plt->size == 0) |
6f25f223 | 4787 | continue; |
533d0af0 | 4788 | |
38b12349 L |
4789 | /* Get the PLT section contents. */ |
4790 | plt_contents = (bfd_byte *) bfd_malloc (plt->size); | |
4791 | if (plt_contents == NULL) | |
4792 | break; | |
4793 | if (!bfd_get_section_contents (abfd, (asection *) plt, | |
4794 | plt_contents, 0, plt->size)) | |
4795 | { | |
4796 | free (plt_contents); | |
4797 | break; | |
4798 | } | |
144bed8d | 4799 | |
38b12349 L |
4800 | /* Check what kind of PLT it is. */ |
4801 | plt_type = plt_unknown; | |
90efb642 L |
4802 | if (plts[j].type == plt_unknown |
4803 | && (plt->size >= (lazy_plt->plt_entry_size | |
4804 | + lazy_plt->plt_entry_size))) | |
144bed8d | 4805 | { |
38b12349 L |
4806 | /* Match lazy PLT first. Need to check the first two |
4807 | instructions. */ | |
4808 | if ((memcmp (plt_contents, lazy_plt->plt0_entry, | |
4809 | lazy_plt->plt0_got1_offset) == 0) | |
4810 | && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6, | |
4811 | 2) == 0)) | |
4812 | plt_type = plt_lazy; | |
4813 | else if (lazy_bnd_plt != NULL | |
4814 | && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry, | |
4815 | lazy_bnd_plt->plt0_got1_offset) == 0) | |
4816 | && (memcmp (plt_contents + 6, | |
4817 | lazy_bnd_plt->plt0_entry + 6, 3) == 0)) | |
ec1f73bb | 4818 | { |
f2c29a16 | 4819 | plt_type = plt_lazy | plt_second; |
ee2fdd6f L |
4820 | /* The fist entry in the lazy IBT PLT is the same as the |
4821 | lazy BND PLT. */ | |
4822 | if ((memcmp (plt_contents + lazy_ibt_plt->plt_entry_size, | |
4823 | lazy_ibt_plt->plt_entry, | |
4824 | lazy_ibt_plt->plt_got_offset) == 0)) | |
4825 | lazy_plt = lazy_ibt_plt; | |
4826 | else | |
4827 | lazy_plt = lazy_bnd_plt; | |
ec1f73bb | 4828 | } |
144bed8d | 4829 | } |
fca6ae69 | 4830 | |
38b12349 | 4831 | if (non_lazy_plt != NULL |
90efb642 L |
4832 | && (plt_type == plt_unknown || plt_type == plt_non_lazy) |
4833 | && plt->size >= non_lazy_plt->plt_entry_size) | |
38b12349 L |
4834 | { |
4835 | /* Match non-lazy PLT. */ | |
4836 | if (memcmp (plt_contents, non_lazy_plt->plt_entry, | |
4837 | non_lazy_plt->plt_got_offset) == 0) | |
4838 | plt_type = plt_non_lazy; | |
4839 | } | |
4840 | ||
ee2fdd6f | 4841 | if (plt_type == plt_unknown || plt_type == plt_second) |
38b12349 | 4842 | { |
ee2fdd6f | 4843 | if (non_lazy_bnd_plt != NULL |
90efb642 | 4844 | && plt->size >= non_lazy_bnd_plt->plt_entry_size |
ee2fdd6f L |
4845 | && (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry, |
4846 | non_lazy_bnd_plt->plt_got_offset) == 0)) | |
38b12349 | 4847 | { |
ee2fdd6f | 4848 | /* Match BND PLT. */ |
f2c29a16 | 4849 | plt_type = plt_second; |
38b12349 L |
4850 | non_lazy_plt = non_lazy_bnd_plt; |
4851 | } | |
ee2fdd6f | 4852 | else if (non_lazy_ibt_plt != NULL |
90efb642 | 4853 | && plt->size >= non_lazy_ibt_plt->plt_entry_size |
ee2fdd6f L |
4854 | && (memcmp (plt_contents, |
4855 | non_lazy_ibt_plt->plt_entry, | |
4856 | non_lazy_ibt_plt->plt_got_offset) == 0)) | |
4857 | { | |
4858 | /* Match IBT PLT. */ | |
4859 | plt_type = plt_second; | |
4860 | non_lazy_plt = non_lazy_ibt_plt; | |
4861 | } | |
38b12349 L |
4862 | } |
4863 | ||
4864 | if (plt_type == plt_unknown) | |
37c0b6ee L |
4865 | { |
4866 | free (plt_contents); | |
4867 | continue; | |
4868 | } | |
38b12349 L |
4869 | |
4870 | plts[j].sec = plt; | |
4871 | plts[j].type = plt_type; | |
4872 | ||
4873 | if ((plt_type & plt_lazy)) | |
4874 | { | |
4875 | plts[j].plt_got_offset = lazy_plt->plt_got_offset; | |
4876 | plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size; | |
4877 | plts[j].plt_entry_size = lazy_plt->plt_entry_size; | |
4878 | /* Skip PLT0 in lazy PLT. */ | |
4879 | i = 1; | |
4880 | } | |
4881 | else | |
4882 | { | |
4883 | plts[j].plt_got_offset = non_lazy_plt->plt_got_offset; | |
4884 | plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size; | |
4885 | plts[j].plt_entry_size = non_lazy_plt->plt_entry_size; | |
4886 | i = 0; | |
4887 | } | |
4888 | ||
f2c29a16 L |
4889 | /* Skip lazy PLT when the second PLT is used. */ |
4890 | if (plt_type == (plt_lazy | plt_second)) | |
38b12349 L |
4891 | plts[j].count = 0; |
4892 | else | |
4893 | { | |
4894 | n = plt->size / plts[j].plt_entry_size; | |
4895 | plts[j].count = n; | |
4896 | count += n - i; | |
4897 | } | |
4898 | ||
4899 | plts[j].contents = plt_contents; | |
144bed8d L |
4900 | } |
4901 | ||
f493882d L |
4902 | return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize, |
4903 | (bfd_vma) 0, plts, dynsyms, | |
4904 | ret); | |
0ff2b86e L |
4905 | } |
4906 | ||
d2b2c203 DJ |
4907 | /* Handle an x86-64 specific section when reading an object file. This |
4908 | is called when elfcode.h finds a section with an unknown type. */ | |
4909 | ||
4910 | static bfd_boolean | |
0c723101 L |
4911 | elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr, |
4912 | const char *name, int shindex) | |
d2b2c203 DJ |
4913 | { |
4914 | if (hdr->sh_type != SHT_X86_64_UNWIND) | |
4915 | return FALSE; | |
4916 | ||
6dc132d9 | 4917 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
d2b2c203 DJ |
4918 | return FALSE; |
4919 | ||
4920 | return TRUE; | |
4921 | } | |
4922 | ||
3b22753a L |
4923 | /* Hook called by the linker routine which adds symbols from an object |
4924 | file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead | |
4925 | of .bss. */ | |
4926 | ||
4927 | static bfd_boolean | |
351f65ca | 4928 | elf_x86_64_add_symbol_hook (bfd *abfd, |
a43942db | 4929 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
351f65ca L |
4930 | Elf_Internal_Sym *sym, |
4931 | const char **namep ATTRIBUTE_UNUSED, | |
4932 | flagword *flagsp ATTRIBUTE_UNUSED, | |
4933 | asection **secp, | |
4934 | bfd_vma *valp) | |
3b22753a L |
4935 | { |
4936 | asection *lcomm; | |
4937 | ||
4938 | switch (sym->st_shndx) | |
4939 | { | |
4940 | case SHN_X86_64_LCOMMON: | |
4941 | lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON"); | |
4942 | if (lcomm == NULL) | |
4943 | { | |
4944 | lcomm = bfd_make_section_with_flags (abfd, | |
4945 | "LARGE_COMMON", | |
4946 | (SEC_ALLOC | |
4947 | | SEC_IS_COMMON | |
4948 | | SEC_LINKER_CREATED)); | |
4949 | if (lcomm == NULL) | |
4950 | return FALSE; | |
4951 | elf_section_flags (lcomm) |= SHF_X86_64_LARGE; | |
4952 | } | |
4953 | *secp = lcomm; | |
4954 | *valp = sym->st_size; | |
c35bdf6e | 4955 | return TRUE; |
3b22753a | 4956 | } |
d8045f23 | 4957 | |
3b22753a L |
4958 | return TRUE; |
4959 | } | |
4960 | ||
4961 | ||
4962 | /* Given a BFD section, try to locate the corresponding ELF section | |
4963 | index. */ | |
4964 | ||
4965 | static bfd_boolean | |
351f65ca L |
4966 | elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
4967 | asection *sec, int *index_return) | |
3b22753a L |
4968 | { |
4969 | if (sec == &_bfd_elf_large_com_section) | |
4970 | { | |
91d6fa6a | 4971 | *index_return = SHN_X86_64_LCOMMON; |
3b22753a L |
4972 | return TRUE; |
4973 | } | |
4974 | return FALSE; | |
4975 | } | |
4976 | ||
4977 | /* Process a symbol. */ | |
4978 | ||
4979 | static void | |
351f65ca L |
4980 | elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, |
4981 | asymbol *asym) | |
3b22753a L |
4982 | { |
4983 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
4984 | ||
4985 | switch (elfsym->internal_elf_sym.st_shndx) | |
4986 | { | |
4987 | case SHN_X86_64_LCOMMON: | |
4988 | asym->section = &_bfd_elf_large_com_section; | |
4989 | asym->value = elfsym->internal_elf_sym.st_size; | |
4990 | /* Common symbol doesn't set BSF_GLOBAL. */ | |
4991 | asym->flags &= ~BSF_GLOBAL; | |
4992 | break; | |
4993 | } | |
4994 | } | |
4995 | ||
4996 | static bfd_boolean | |
351f65ca | 4997 | elf_x86_64_common_definition (Elf_Internal_Sym *sym) |
3b22753a L |
4998 | { |
4999 | return (sym->st_shndx == SHN_COMMON | |
5000 | || sym->st_shndx == SHN_X86_64_LCOMMON); | |
5001 | } | |
5002 | ||
5003 | static unsigned int | |
351f65ca | 5004 | elf_x86_64_common_section_index (asection *sec) |
3b22753a L |
5005 | { |
5006 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
5007 | return SHN_COMMON; | |
5008 | else | |
5009 | return SHN_X86_64_LCOMMON; | |
5010 | } | |
5011 | ||
5012 | static asection * | |
351f65ca | 5013 | elf_x86_64_common_section (asection *sec) |
3b22753a L |
5014 | { |
5015 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
5016 | return bfd_com_section_ptr; | |
5017 | else | |
5018 | return &_bfd_elf_large_com_section; | |
5019 | } | |
5020 | ||
5021 | static bfd_boolean | |
5d13b3b3 AM |
5022 | elf_x86_64_merge_symbol (struct elf_link_hash_entry *h, |
5023 | const Elf_Internal_Sym *sym, | |
351f65ca | 5024 | asection **psec, |
5d13b3b3 AM |
5025 | bfd_boolean newdef, |
5026 | bfd_boolean olddef, | |
351f65ca | 5027 | bfd *oldbfd, |
5d13b3b3 | 5028 | const asection *oldsec) |
3b22753a L |
5029 | { |
5030 | /* A normal common symbol and a large common symbol result in a | |
00492999 L |
5031 | normal common symbol. We turn the large common symbol into a |
5032 | normal one. */ | |
5d13b3b3 | 5033 | if (!olddef |
3b22753a | 5034 | && h->root.type == bfd_link_hash_common |
5d13b3b3 AM |
5035 | && !newdef |
5036 | && bfd_is_com_section (*psec) | |
5037 | && oldsec != *psec) | |
3b22753a | 5038 | { |
00492999 | 5039 | if (sym->st_shndx == SHN_COMMON |
5d13b3b3 | 5040 | && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0) |
00492999 L |
5041 | { |
5042 | h->root.u.c.p->section | |
5043 | = bfd_make_section_old_way (oldbfd, "COMMON"); | |
5044 | h->root.u.c.p->section->flags = SEC_ALLOC; | |
5045 | } | |
5046 | else if (sym->st_shndx == SHN_X86_64_LCOMMON | |
5d13b3b3 AM |
5047 | && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0) |
5048 | *psec = bfd_com_section_ptr; | |
3b22753a L |
5049 | } |
5050 | ||
5051 | return TRUE; | |
5052 | } | |
5053 | ||
5054 | static int | |
351f65ca L |
5055 | elf_x86_64_additional_program_headers (bfd *abfd, |
5056 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
3b22753a L |
5057 | { |
5058 | asection *s; | |
9a2e389a | 5059 | int count = 0; |
3b22753a L |
5060 | |
5061 | /* Check to see if we need a large readonly segment. */ | |
5062 | s = bfd_get_section_by_name (abfd, ".lrodata"); | |
5063 | if (s && (s->flags & SEC_LOAD)) | |
5064 | count++; | |
5065 | ||
5066 | /* Check to see if we need a large data segment. Since .lbss sections | |
5067 | is placed right after the .bss section, there should be no need for | |
5068 | a large data segment just because of .lbss. */ | |
5069 | s = bfd_get_section_by_name (abfd, ".ldata"); | |
5070 | if (s && (s->flags & SEC_LOAD)) | |
5071 | count++; | |
5072 | ||
5073 | return count; | |
5074 | } | |
5075 | ||
c543bf9a L |
5076 | /* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */ |
5077 | ||
5078 | static bfd_boolean | |
5079 | elf_x86_64_relocs_compatible (const bfd_target *input, | |
5080 | const bfd_target *output) | |
5081 | { | |
5082 | return ((xvec_get_elf_backend_data (input)->s->elfclass | |
5083 | == xvec_get_elf_backend_data (output)->s->elfclass) | |
5084 | && _bfd_elf_relocs_compatible (input, output)); | |
5085 | } | |
5086 | ||
38b12349 L |
5087 | /* Set up x86-64 GNU properties. Return the first relocatable ELF input |
5088 | with GNU properties if found. Otherwise, return NULL. */ | |
5089 | ||
5090 | static bfd * | |
5091 | elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info) | |
5092 | { | |
1de031c8 | 5093 | struct elf_x86_init_table init_table; |
ee2fdd6f | 5094 | |
78984959 L |
5095 | if ((int) R_X86_64_standard >= (int) R_X86_64_converted_reloc_bit |
5096 | || (int) R_X86_64_max <= (int) R_X86_64_converted_reloc_bit | |
5097 | || ((int) (R_X86_64_GNU_VTINHERIT | R_X86_64_converted_reloc_bit) | |
5098 | != (int) R_X86_64_GNU_VTINHERIT) | |
5099 | || ((int) (R_X86_64_GNU_VTENTRY | R_X86_64_converted_reloc_bit) | |
5100 | != (int) R_X86_64_GNU_VTENTRY)) | |
5101 | abort (); | |
5102 | ||
1de031c8 | 5103 | init_table.is_vxworks = FALSE; |
a6798bab | 5104 | if (get_elf_x86_64_backend_data (info->output_bfd)->os == is_normal) |
73784fa5 | 5105 | { |
a6798bab | 5106 | if (info->bndplt) |
ee2fdd6f | 5107 | { |
1de031c8 L |
5108 | init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt; |
5109 | init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt; | |
ee2fdd6f L |
5110 | } |
5111 | else | |
5112 | { | |
1de031c8 L |
5113 | init_table.lazy_plt = &elf_x86_64_lazy_plt; |
5114 | init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt; | |
ee2fdd6f | 5115 | } |
38b12349 | 5116 | |
a6798bab | 5117 | if (ABI_64_P (info->output_bfd)) |
38b12349 | 5118 | { |
1de031c8 L |
5119 | init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt; |
5120 | init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt; | |
38b12349 L |
5121 | } |
5122 | else | |
5123 | { | |
1de031c8 L |
5124 | init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt; |
5125 | init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt; | |
38b12349 | 5126 | } |
1de031c8 | 5127 | init_table.normal_target = TRUE; |
38b12349 L |
5128 | } |
5129 | else | |
5130 | { | |
1de031c8 L |
5131 | init_table.lazy_plt = &elf_x86_64_nacl_plt; |
5132 | init_table.non_lazy_plt = NULL; | |
5133 | init_table.lazy_ibt_plt = NULL; | |
5134 | init_table.non_lazy_ibt_plt = NULL; | |
5135 | init_table.normal_target = FALSE; | |
38b12349 L |
5136 | } |
5137 | ||
7a382c1c L |
5138 | if (ABI_64_P (info->output_bfd)) |
5139 | { | |
1de031c8 L |
5140 | init_table.r_info = elf64_r_info; |
5141 | init_table.r_sym = elf64_r_sym; | |
7a382c1c L |
5142 | } |
5143 | else | |
5144 | { | |
1de031c8 L |
5145 | init_table.r_info = elf32_r_info; |
5146 | init_table.r_sym = elf32_r_sym; | |
7a382c1c L |
5147 | } |
5148 | ||
1de031c8 | 5149 | return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table); |
38b12349 L |
5150 | } |
5151 | ||
9a2e389a | 5152 | static const struct bfd_elf_special_section |
46bed679 | 5153 | elf_x86_64_special_sections[]= |
3b22753a | 5154 | { |
0112cd26 NC |
5155 | { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, |
5156 | { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
5157 | { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE}, | |
5158 | { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
5159 | { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
5160 | { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
5161 | { NULL, 0, 0, 0, 0 } | |
3b22753a L |
5162 | }; |
5163 | ||
6d00b590 | 5164 | #define TARGET_LITTLE_SYM x86_64_elf64_vec |
70256ad8 AJ |
5165 | #define TARGET_LITTLE_NAME "elf64-x86-64" |
5166 | #define ELF_ARCH bfd_arch_i386 | |
ae95ffa6 | 5167 | #define ELF_TARGET_ID X86_64_ELF_DATA |
70256ad8 | 5168 | #define ELF_MACHINE_CODE EM_X86_64 |
f7661549 | 5169 | #define ELF_MAXPAGESIZE 0x200000 |
2043964e | 5170 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 5171 | #define ELF_COMMONPAGESIZE 0x1000 |
70256ad8 AJ |
5172 | |
5173 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 5174 | #define elf_backend_can_refcount 1 |
70256ad8 AJ |
5175 | #define elf_backend_want_got_plt 1 |
5176 | #define elf_backend_plt_readonly 1 | |
5177 | #define elf_backend_want_plt_sym 0 | |
5178 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE*3) | |
b491616a | 5179 | #define elf_backend_rela_normal 1 |
e41b3a13 | 5180 | #define elf_backend_plt_alignment 4 |
f7483970 | 5181 | #define elf_backend_extern_protected_data 1 |
bedfd056 | 5182 | #define elf_backend_caches_rawsize 1 |
64f52338 | 5183 | #define elf_backend_dtrel_excludes_plt 1 |
5474d94f | 5184 | #define elf_backend_want_dynrelro 1 |
70256ad8 | 5185 | |
351f65ca | 5186 | #define elf_info_to_howto elf_x86_64_info_to_howto |
70256ad8 | 5187 | |
351f65ca | 5188 | #define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup |
157090f7 | 5189 | #define bfd_elf64_bfd_reloc_name_lookup \ |
351f65ca | 5190 | elf_x86_64_reloc_name_lookup |
70256ad8 | 5191 | |
c543bf9a | 5192 | #define elf_backend_relocs_compatible elf_x86_64_relocs_compatible |
351f65ca | 5193 | #define elf_backend_check_relocs elf_x86_64_check_relocs |
38b12349 | 5194 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
351f65ca L |
5195 | #define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections |
5196 | #define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol | |
233cc9c1 | 5197 | #define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms |
351f65ca L |
5198 | #define elf_backend_grok_prstatus elf_x86_64_grok_prstatus |
5199 | #define elf_backend_grok_psinfo elf_x86_64_grok_psinfo | |
8fd79e71 L |
5200 | #ifdef CORE_HEADER |
5201 | #define elf_backend_write_core_note elf_x86_64_write_core_note | |
5202 | #endif | |
351f65ca L |
5203 | #define elf_backend_reloc_type_class elf_x86_64_reloc_type_class |
5204 | #define elf_backend_relocate_section elf_x86_64_relocate_section | |
74541ad4 | 5205 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
407443a3 | 5206 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
0ff2b86e | 5207 | #define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab |
8d88c4ca | 5208 | |
d2b2c203 | 5209 | #define elf_backend_section_from_shdr \ |
351f65ca | 5210 | elf_x86_64_section_from_shdr |
d2b2c203 | 5211 | |
3b22753a | 5212 | #define elf_backend_section_from_bfd_section \ |
351f65ca | 5213 | elf_x86_64_elf_section_from_bfd_section |
3b22753a | 5214 | #define elf_backend_add_symbol_hook \ |
351f65ca | 5215 | elf_x86_64_add_symbol_hook |
3b22753a | 5216 | #define elf_backend_symbol_processing \ |
351f65ca | 5217 | elf_x86_64_symbol_processing |
3b22753a | 5218 | #define elf_backend_common_section_index \ |
351f65ca | 5219 | elf_x86_64_common_section_index |
3b22753a | 5220 | #define elf_backend_common_section \ |
351f65ca | 5221 | elf_x86_64_common_section |
3b22753a | 5222 | #define elf_backend_common_definition \ |
351f65ca | 5223 | elf_x86_64_common_definition |
3b22753a | 5224 | #define elf_backend_merge_symbol \ |
351f65ca | 5225 | elf_x86_64_merge_symbol |
3b22753a | 5226 | #define elf_backend_special_sections \ |
351f65ca | 5227 | elf_x86_64_special_sections |
3b22753a | 5228 | #define elf_backend_additional_program_headers \ |
351f65ca | 5229 | elf_x86_64_additional_program_headers |
38b12349 L |
5230 | #define elf_backend_setup_gnu_properties \ |
5231 | elf_x86_64_link_setup_gnu_properties | |
3b22753a | 5232 | |
8d88c4ca | 5233 | #include "elf64-target.h" |
9d7cbccd | 5234 | |
6036f486 ES |
5235 | /* CloudABI support. */ |
5236 | ||
5237 | #undef TARGET_LITTLE_SYM | |
5238 | #define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec | |
5239 | #undef TARGET_LITTLE_NAME | |
5240 | #define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi" | |
5241 | ||
5242 | #undef ELF_OSABI | |
5243 | #define ELF_OSABI ELFOSABI_CLOUDABI | |
5244 | ||
5245 | #undef elf64_bed | |
5246 | #define elf64_bed elf64_x86_64_cloudabi_bed | |
5247 | ||
5248 | #include "elf64-target.h" | |
5249 | ||
9d7cbccd NC |
5250 | /* FreeBSD support. */ |
5251 | ||
5252 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5253 | #define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec |
9d7cbccd NC |
5254 | #undef TARGET_LITTLE_NAME |
5255 | #define TARGET_LITTLE_NAME "elf64-x86-64-freebsd" | |
5256 | ||
d1036acb L |
5257 | #undef ELF_OSABI |
5258 | #define ELF_OSABI ELFOSABI_FREEBSD | |
9d7cbccd | 5259 | |
9d7cbccd NC |
5260 | #undef elf64_bed |
5261 | #define elf64_bed elf64_x86_64_fbsd_bed | |
5262 | ||
5263 | #include "elf64-target.h" | |
8a9036a4 | 5264 | |
a6cc6b3b RO |
5265 | /* Solaris 2 support. */ |
5266 | ||
5267 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5268 | #define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec |
a6cc6b3b RO |
5269 | #undef TARGET_LITTLE_NAME |
5270 | #define TARGET_LITTLE_NAME "elf64-x86-64-sol2" | |
5271 | ||
5272 | /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE | |
5273 | objects won't be recognized. */ | |
5274 | #undef ELF_OSABI | |
5275 | ||
5276 | #undef elf64_bed | |
5277 | #define elf64_bed elf64_x86_64_sol2_bed | |
5278 | ||
7dc98aea RO |
5279 | /* The 64-bit static TLS arena size is rounded to the nearest 16-byte |
5280 | boundary. */ | |
84865015 | 5281 | #undef elf_backend_static_tls_alignment |
7dc98aea RO |
5282 | #define elf_backend_static_tls_alignment 16 |
5283 | ||
a6cc6b3b RO |
5284 | /* The Solaris 2 ABI requires a plt symbol on all platforms. |
5285 | ||
5286 | Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output | |
5287 | File, p.63. */ | |
84865015 | 5288 | #undef elf_backend_want_plt_sym |
a6cc6b3b RO |
5289 | #define elf_backend_want_plt_sym 1 |
5290 | ||
84865015 NC |
5291 | #undef elf_backend_strtab_flags |
5292 | #define elf_backend_strtab_flags SHF_STRINGS | |
5293 | ||
5294 | static bfd_boolean | |
5522f910 NC |
5295 | elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED, |
5296 | bfd *obfd ATTRIBUTE_UNUSED, | |
5297 | const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED, | |
5298 | Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED) | |
84865015 NC |
5299 | { |
5300 | /* PR 19938: FIXME: Need to add code for setting the sh_info | |
5301 | and sh_link fields of Solaris specific section types. */ | |
5302 | return FALSE; | |
5303 | } | |
5304 | ||
5522f910 NC |
5305 | #undef elf_backend_copy_special_section_fields |
5306 | #define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields | |
84865015 | 5307 | |
a6cc6b3b RO |
5308 | #include "elf64-target.h" |
5309 | ||
8059fb19 RM |
5310 | /* Native Client support. */ |
5311 | ||
64b384e1 RM |
5312 | static bfd_boolean |
5313 | elf64_x86_64_nacl_elf_object_p (bfd *abfd) | |
5314 | { | |
5315 | /* Set the right machine number for a NaCl x86-64 ELF64 file. */ | |
5316 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl); | |
5317 | return TRUE; | |
5318 | } | |
5319 | ||
8059fb19 | 5320 | #undef TARGET_LITTLE_SYM |
6d00b590 | 5321 | #define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec |
8059fb19 RM |
5322 | #undef TARGET_LITTLE_NAME |
5323 | #define TARGET_LITTLE_NAME "elf64-x86-64-nacl" | |
5324 | #undef elf64_bed | |
5325 | #define elf64_bed elf64_x86_64_nacl_bed | |
5326 | ||
5327 | #undef ELF_MAXPAGESIZE | |
5328 | #undef ELF_MINPAGESIZE | |
5329 | #undef ELF_COMMONPAGESIZE | |
5330 | #define ELF_MAXPAGESIZE 0x10000 | |
5331 | #define ELF_MINPAGESIZE 0x10000 | |
5332 | #define ELF_COMMONPAGESIZE 0x10000 | |
5333 | ||
5334 | /* Restore defaults. */ | |
5335 | #undef ELF_OSABI | |
5336 | #undef elf_backend_static_tls_alignment | |
5337 | #undef elf_backend_want_plt_sym | |
5338 | #define elf_backend_want_plt_sym 0 | |
84865015 | 5339 | #undef elf_backend_strtab_flags |
5522f910 | 5340 | #undef elf_backend_copy_special_section_fields |
8059fb19 RM |
5341 | |
5342 | /* NaCl uses substantially different PLT entries for the same effects. */ | |
5343 | ||
5344 | #undef elf_backend_plt_alignment | |
5345 | #define elf_backend_plt_alignment 5 | |
5346 | #define NACL_PLT_ENTRY_SIZE 64 | |
5347 | #define NACLMASK 0xe0 /* 32-byte alignment mask. */ | |
5348 | ||
5349 | static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] = | |
5350 | { | |
5351 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ | |
5352 | 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */ | |
5353 | 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */ | |
5354 | 0x4d, 0x01, 0xfb, /* add %r15, %r11 */ | |
5355 | 0x41, 0xff, 0xe3, /* jmpq *%r11 */ | |
5356 | ||
ea2d813e | 5357 | /* 9-byte nop sequence to pad out to the next 32-byte boundary. */ |
70cc877f | 5358 | 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */ |
ea2d813e RM |
5359 | |
5360 | /* 32 bytes of nop to pad out to the standard size. */ | |
3ddf1bdd | 5361 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */ |
8059fb19 | 5362 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ |
3ddf1bdd | 5363 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */ |
8059fb19 | 5364 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ |
3ddf1bdd | 5365 | 0x66, /* excess data16 prefix */ |
ea2d813e | 5366 | 0x90 /* nop */ |
8059fb19 RM |
5367 | }; |
5368 | ||
5369 | static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] = | |
5370 | { | |
5371 | 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */ | |
5372 | 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */ | |
5373 | 0x4d, 0x01, 0xfb, /* add %r15, %r11 */ | |
5374 | 0x41, 0xff, 0xe3, /* jmpq *%r11 */ | |
5375 | ||
5376 | /* 15-byte nop sequence to pad out to the next 32-byte boundary. */ | |
3ddf1bdd | 5377 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */ |
8059fb19 RM |
5378 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ |
5379 | ||
5380 | /* Lazy GOT entries point here (32-byte aligned). */ | |
5381 | 0x68, /* pushq immediate */ | |
5382 | 0, 0, 0, 0, /* replaced with index into relocation table. */ | |
5383 | 0xe9, /* jmp relative */ | |
5384 | 0, 0, 0, 0, /* replaced with offset to start of .plt0. */ | |
5385 | ||
5386 | /* 22 bytes of nop to pad out to the standard size. */ | |
3ddf1bdd | 5387 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */ |
8059fb19 RM |
5388 | 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ |
5389 | 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */ | |
5390 | }; | |
5391 | ||
5392 | /* .eh_frame covering the .plt section. */ | |
5393 | ||
5394 | static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] = | |
5395 | { | |
5396 | #if (PLT_CIE_LENGTH != 20 \ | |
5397 | || PLT_FDE_LENGTH != 36 \ | |
5398 | || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \ | |
5399 | || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12) | |
5400 | # error "Need elf_x86_64_backend_data parameters for eh_frame_plt offsets!" | |
5401 | #endif | |
5402 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
5403 | 0, 0, 0, 0, /* CIE ID */ | |
5404 | 1, /* CIE version */ | |
5405 | 'z', 'R', 0, /* Augmentation string */ | |
5406 | 1, /* Code alignment factor */ | |
5407 | 0x78, /* Data alignment factor */ | |
5408 | 16, /* Return address column */ | |
5409 | 1, /* Augmentation size */ | |
5410 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
5411 | DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ | |
5412 | DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ | |
5413 | DW_CFA_nop, DW_CFA_nop, | |
5414 | ||
5415 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
5416 | PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */ | |
5417 | 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ | |
5418 | 0, 0, 0, 0, /* .plt size goes here */ | |
5419 | 0, /* Augmentation size */ | |
5420 | DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ | |
5421 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
5422 | DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ | |
5423 | DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */ | |
5424 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
5425 | 13, /* Block length */ | |
5426 | DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ | |
5427 | DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ | |
5428 | DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge, | |
5429 | DW_OP_lit3, DW_OP_shl, DW_OP_plus, | |
5430 | DW_CFA_nop, DW_CFA_nop | |
5431 | }; | |
5432 | ||
765e526c | 5433 | static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt = |
8059fb19 RM |
5434 | { |
5435 | elf_x86_64_nacl_plt0_entry, /* plt0_entry */ | |
765e526c | 5436 | NACL_PLT_ENTRY_SIZE, /* plt0_entry_size */ |
8059fb19 RM |
5437 | elf_x86_64_nacl_plt_entry, /* plt_entry */ |
5438 | NACL_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
5439 | 2, /* plt0_got1_offset */ | |
5440 | 9, /* plt0_got2_offset */ | |
5441 | 13, /* plt0_got2_insn_end */ | |
5442 | 3, /* plt_got_offset */ | |
5443 | 33, /* plt_reloc_offset */ | |
5444 | 38, /* plt_plt_offset */ | |
5445 | 7, /* plt_got_insn_size */ | |
5446 | 42, /* plt_plt_insn_end */ | |
5447 | 32, /* plt_lazy_offset */ | |
a6798bab L |
5448 | elf_x86_64_nacl_plt0_entry, /* pic_plt0_entry */ |
5449 | elf_x86_64_nacl_plt_entry, /* pic_plt_entry */ | |
8059fb19 | 5450 | elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */ |
38b12349 L |
5451 | sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */ |
5452 | }; | |
5453 | ||
5454 | static const struct elf_x86_64_backend_data elf_x86_64_nacl_arch_bed = | |
5455 | { | |
5456 | is_nacl /* os */ | |
8059fb19 RM |
5457 | }; |
5458 | ||
5459 | #undef elf_backend_arch_data | |
5460 | #define elf_backend_arch_data &elf_x86_64_nacl_arch_bed | |
5461 | ||
64b384e1 RM |
5462 | #undef elf_backend_object_p |
5463 | #define elf_backend_object_p elf64_x86_64_nacl_elf_object_p | |
5a68afcf RM |
5464 | #undef elf_backend_modify_segment_map |
5465 | #define elf_backend_modify_segment_map nacl_modify_segment_map | |
5466 | #undef elf_backend_modify_program_headers | |
5467 | #define elf_backend_modify_program_headers nacl_modify_program_headers | |
887badb3 RM |
5468 | #undef elf_backend_final_write_processing |
5469 | #define elf_backend_final_write_processing nacl_final_write_processing | |
5a68afcf | 5470 | |
8059fb19 RM |
5471 | #include "elf64-target.h" |
5472 | ||
5473 | /* Native Client x32 support. */ | |
5474 | ||
64b384e1 RM |
5475 | static bfd_boolean |
5476 | elf32_x86_64_nacl_elf_object_p (bfd *abfd) | |
5477 | { | |
5478 | /* Set the right machine number for a NaCl x86-64 ELF32 file. */ | |
5479 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl); | |
5480 | return TRUE; | |
5481 | } | |
5482 | ||
8059fb19 | 5483 | #undef TARGET_LITTLE_SYM |
6d00b590 | 5484 | #define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec |
8059fb19 RM |
5485 | #undef TARGET_LITTLE_NAME |
5486 | #define TARGET_LITTLE_NAME "elf32-x86-64-nacl" | |
5487 | #undef elf32_bed | |
5488 | #define elf32_bed elf32_x86_64_nacl_bed | |
5489 | ||
8059fb19 RM |
5490 | #define bfd_elf32_bfd_reloc_type_lookup \ |
5491 | elf_x86_64_reloc_type_lookup | |
5492 | #define bfd_elf32_bfd_reloc_name_lookup \ | |
5493 | elf_x86_64_reloc_name_lookup | |
b7365e5d L |
5494 | #define bfd_elf32_get_synthetic_symtab \ |
5495 | elf_x86_64_get_synthetic_symtab | |
8059fb19 RM |
5496 | |
5497 | #undef elf_backend_object_p | |
5498 | #define elf_backend_object_p \ | |
64b384e1 | 5499 | elf32_x86_64_nacl_elf_object_p |
8059fb19 RM |
5500 | |
5501 | #undef elf_backend_bfd_from_remote_memory | |
5502 | #define elf_backend_bfd_from_remote_memory \ | |
5503 | _bfd_elf32_bfd_from_remote_memory | |
5504 | ||
5505 | #undef elf_backend_size_info | |
5506 | #define elf_backend_size_info \ | |
5507 | _bfd_elf32_size_info | |
5508 | ||
5509 | #include "elf32-target.h" | |
5510 | ||
5511 | /* Restore defaults. */ | |
5a68afcf | 5512 | #undef elf_backend_object_p |
8059fb19 | 5513 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
5a68afcf RM |
5514 | #undef elf_backend_bfd_from_remote_memory |
5515 | #undef elf_backend_size_info | |
5516 | #undef elf_backend_modify_segment_map | |
5517 | #undef elf_backend_modify_program_headers | |
887badb3 | 5518 | #undef elf_backend_final_write_processing |
8059fb19 | 5519 | |
8a9036a4 L |
5520 | /* Intel L1OM support. */ |
5521 | ||
5522 | static bfd_boolean | |
5523 | elf64_l1om_elf_object_p (bfd *abfd) | |
5524 | { | |
5525 | /* Set the right machine number for an L1OM elf64 file. */ | |
5526 | bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om); | |
5527 | return TRUE; | |
5528 | } | |
5529 | ||
5530 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5531 | #define TARGET_LITTLE_SYM l1om_elf64_vec |
8a9036a4 L |
5532 | #undef TARGET_LITTLE_NAME |
5533 | #define TARGET_LITTLE_NAME "elf64-l1om" | |
5534 | #undef ELF_ARCH | |
5535 | #define ELF_ARCH bfd_arch_l1om | |
5536 | ||
5537 | #undef ELF_MACHINE_CODE | |
5538 | #define ELF_MACHINE_CODE EM_L1OM | |
5539 | ||
5540 | #undef ELF_OSABI | |
5541 | ||
5542 | #undef elf64_bed | |
5543 | #define elf64_bed elf64_l1om_bed | |
5544 | ||
5545 | #undef elf_backend_object_p | |
5546 | #define elf_backend_object_p elf64_l1om_elf_object_p | |
5547 | ||
8059fb19 RM |
5548 | /* Restore defaults. */ |
5549 | #undef ELF_MAXPAGESIZE | |
5550 | #undef ELF_MINPAGESIZE | |
5551 | #undef ELF_COMMONPAGESIZE | |
5552 | #define ELF_MAXPAGESIZE 0x200000 | |
5553 | #define ELF_MINPAGESIZE 0x1000 | |
5554 | #define ELF_COMMONPAGESIZE 0x1000 | |
5555 | #undef elf_backend_plt_alignment | |
5556 | #define elf_backend_plt_alignment 4 | |
5557 | #undef elf_backend_arch_data | |
5558 | #define elf_backend_arch_data &elf_x86_64_arch_bed | |
1a0c107f | 5559 | |
8a9036a4 L |
5560 | #include "elf64-target.h" |
5561 | ||
5562 | /* FreeBSD L1OM support. */ | |
5563 | ||
5564 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5565 | #define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec |
8a9036a4 L |
5566 | #undef TARGET_LITTLE_NAME |
5567 | #define TARGET_LITTLE_NAME "elf64-l1om-freebsd" | |
5568 | ||
5569 | #undef ELF_OSABI | |
5570 | #define ELF_OSABI ELFOSABI_FREEBSD | |
5571 | ||
5572 | #undef elf64_bed | |
5573 | #define elf64_bed elf64_l1om_fbsd_bed | |
5574 | ||
8a9036a4 | 5575 | #include "elf64-target.h" |
351f65ca | 5576 | |
7a9068fe L |
5577 | /* Intel K1OM support. */ |
5578 | ||
5579 | static bfd_boolean | |
5580 | elf64_k1om_elf_object_p (bfd *abfd) | |
5581 | { | |
5582 | /* Set the right machine number for an K1OM elf64 file. */ | |
5583 | bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om); | |
5584 | return TRUE; | |
5585 | } | |
5586 | ||
5587 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5588 | #define TARGET_LITTLE_SYM k1om_elf64_vec |
7a9068fe L |
5589 | #undef TARGET_LITTLE_NAME |
5590 | #define TARGET_LITTLE_NAME "elf64-k1om" | |
5591 | #undef ELF_ARCH | |
5592 | #define ELF_ARCH bfd_arch_k1om | |
5593 | ||
5594 | #undef ELF_MACHINE_CODE | |
5595 | #define ELF_MACHINE_CODE EM_K1OM | |
5596 | ||
5597 | #undef ELF_OSABI | |
5598 | ||
5599 | #undef elf64_bed | |
5600 | #define elf64_bed elf64_k1om_bed | |
5601 | ||
5602 | #undef elf_backend_object_p | |
5603 | #define elf_backend_object_p elf64_k1om_elf_object_p | |
5604 | ||
5605 | #undef elf_backend_static_tls_alignment | |
5606 | ||
5607 | #undef elf_backend_want_plt_sym | |
5608 | #define elf_backend_want_plt_sym 0 | |
5609 | ||
5610 | #include "elf64-target.h" | |
5611 | ||
5612 | /* FreeBSD K1OM support. */ | |
5613 | ||
5614 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5615 | #define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec |
7a9068fe L |
5616 | #undef TARGET_LITTLE_NAME |
5617 | #define TARGET_LITTLE_NAME "elf64-k1om-freebsd" | |
5618 | ||
5619 | #undef ELF_OSABI | |
5620 | #define ELF_OSABI ELFOSABI_FREEBSD | |
5621 | ||
5622 | #undef elf64_bed | |
5623 | #define elf64_bed elf64_k1om_fbsd_bed | |
5624 | ||
5625 | #include "elf64-target.h" | |
5626 | ||
351f65ca L |
5627 | /* 32bit x86-64 support. */ |
5628 | ||
351f65ca | 5629 | #undef TARGET_LITTLE_SYM |
6d00b590 | 5630 | #define TARGET_LITTLE_SYM x86_64_elf32_vec |
351f65ca L |
5631 | #undef TARGET_LITTLE_NAME |
5632 | #define TARGET_LITTLE_NAME "elf32-x86-64" | |
8059fb19 | 5633 | #undef elf32_bed |
351f65ca L |
5634 | |
5635 | #undef ELF_ARCH | |
5636 | #define ELF_ARCH bfd_arch_i386 | |
5637 | ||
5638 | #undef ELF_MACHINE_CODE | |
5639 | #define ELF_MACHINE_CODE EM_X86_64 | |
5640 | ||
351f65ca L |
5641 | #undef ELF_OSABI |
5642 | ||
351f65ca L |
5643 | #undef elf_backend_object_p |
5644 | #define elf_backend_object_p \ | |
5645 | elf32_x86_64_elf_object_p | |
5646 | ||
5647 | #undef elf_backend_bfd_from_remote_memory | |
5648 | #define elf_backend_bfd_from_remote_memory \ | |
5649 | _bfd_elf32_bfd_from_remote_memory | |
5650 | ||
5651 | #undef elf_backend_size_info | |
5652 | #define elf_backend_size_info \ | |
5653 | _bfd_elf32_size_info | |
5654 | ||
5655 | #include "elf32-target.h" |