Commit | Line | Data |
---|---|---|
8d88c4ca | 1 | /* X86-64 specific support for 64-bit ELF |
4dfe6ac6 NC |
2 | Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
3 | 2010 Free Software Foundation, Inc. | |
8d88c4ca NC |
4 | Contributed by Jan Hubicka <jh@suse.cz>. |
5 | ||
ae9a127f | 6 | This file is part of BFD, the Binary File Descriptor library. |
8d88c4ca | 7 | |
ae9a127f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 11 | (at your option) any later version. |
8d88c4ca | 12 | |
ae9a127f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
8d88c4ca | 17 | |
ae9a127f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
8d88c4ca | 22 | |
8d88c4ca | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
c434dee6 | 25 | #include "bfdlink.h" |
8d88c4ca NC |
26 | #include "libbfd.h" |
27 | #include "elf-bfd.h" | |
142411ca | 28 | #include "bfd_stdint.h" |
c25bc9fc L |
29 | #include "objalloc.h" |
30 | #include "hashtab.h" | |
8d88c4ca NC |
31 | |
32 | #include "elf/x86-64.h" | |
33 | ||
8d88c4ca NC |
34 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ |
35 | #define MINUS_ONE (~ (bfd_vma) 0) | |
36 | ||
37 | /* The relocation "howto" table. Order of fields: | |
7b81dfbb AJ |
38 | type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow, |
39 | special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */ | |
70256ad8 AJ |
40 | static reloc_howto_type x86_64_elf_howto_table[] = |
41 | { | |
b34976b6 AM |
42 | HOWTO(R_X86_64_NONE, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
43 | bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000, | |
44 | FALSE), | |
45 | HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
46 | bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE, | |
47 | FALSE), | |
48 | HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
49 | bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff, | |
50 | TRUE), | |
51 | HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
52 | bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff, | |
53 | FALSE), | |
54 | HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
55 | bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff, | |
56 | TRUE), | |
57 | HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
58 | bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff, | |
59 | FALSE), | |
60 | HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
61 | bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE, | |
62 | MINUS_ONE, FALSE), | |
63 | HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
64 | bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE, | |
65 | MINUS_ONE, FALSE), | |
66 | HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
67 | bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE, | |
68 | MINUS_ONE, FALSE), | |
69 | HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
70 | bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff, | |
71 | 0xffffffff, TRUE), | |
72 | HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned, | |
73 | bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff, | |
74 | FALSE), | |
75 | HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
76 | bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff, | |
77 | FALSE), | |
78 | HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
79 | bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE), | |
b0360d8c | 80 | HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield, |
b34976b6 | 81 | bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE), |
ac2aa337 | 82 | HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
b34976b6 AM |
83 | bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE), |
84 | HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
85 | bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE), | |
86 | HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
87 | bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE, | |
88 | MINUS_ONE, FALSE), | |
89 | HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
90 | bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE, | |
91 | MINUS_ONE, FALSE), | |
92 | HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
93 | bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE, | |
94 | MINUS_ONE, FALSE), | |
95 | HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
96 | bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff, | |
97 | 0xffffffff, TRUE), | |
98 | HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
99 | bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff, | |
100 | 0xffffffff, TRUE), | |
ac2aa337 | 101 | HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed, |
b34976b6 AM |
102 | bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff, |
103 | 0xffffffff, FALSE), | |
104 | HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
105 | bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff, | |
106 | 0xffffffff, TRUE), | |
107 | HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed, | |
108 | bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff, | |
109 | 0xffffffff, FALSE), | |
d6ab8113 JB |
110 | HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
111 | bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE, | |
112 | TRUE), | |
113 | HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
114 | bfd_elf_generic_reloc, "R_X86_64_GOTOFF64", | |
115 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
116 | HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed, | |
117 | bfd_elf_generic_reloc, "R_X86_64_GOTPC32", | |
118 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
7b81dfbb AJ |
119 | HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed, |
120 | bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE, | |
121 | FALSE), | |
122 | HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed, | |
123 | bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE, | |
124 | MINUS_ONE, TRUE), | |
125 | HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed, | |
126 | bfd_elf_generic_reloc, "R_X86_64_GOTPC64", | |
127 | FALSE, MINUS_ONE, MINUS_ONE, TRUE), | |
128 | HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed, | |
129 | bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE, | |
130 | MINUS_ONE, FALSE), | |
131 | HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed, | |
132 | bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE, | |
133 | MINUS_ONE, FALSE), | |
67a4f2b7 AO |
134 | EMPTY_HOWTO (32), |
135 | EMPTY_HOWTO (33), | |
136 | HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0, | |
137 | complain_overflow_bitfield, bfd_elf_generic_reloc, | |
138 | "R_X86_64_GOTPC32_TLSDESC", | |
139 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
140 | HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0, | |
141 | complain_overflow_dont, bfd_elf_generic_reloc, | |
142 | "R_X86_64_TLSDESC_CALL", | |
143 | FALSE, 0, 0, FALSE), | |
144 | HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0, | |
145 | complain_overflow_bitfield, bfd_elf_generic_reloc, | |
146 | "R_X86_64_TLSDESC", | |
147 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
cbe950e9 L |
148 | HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
149 | bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE, | |
150 | MINUS_ONE, FALSE), | |
fe4770f4 | 151 | |
a33d77bc JB |
152 | /* We have a gap in the reloc numbers here. |
153 | R_X86_64_standard counts the number up to this point, and | |
154 | R_X86_64_vt_offset is the value to subtract from a reloc type of | |
155 | R_X86_64_GNU_VT* to form an index into this table. */ | |
cbe950e9 | 156 | #define R_X86_64_standard (R_X86_64_IRELATIVE + 1) |
a33d77bc JB |
157 | #define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard) |
158 | ||
fe4770f4 | 159 | /* GNU extension to record C++ vtable hierarchy. */ |
b34976b6 AM |
160 | HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
161 | NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE), | |
fe4770f4 AJ |
162 | |
163 | /* GNU extension to record C++ vtable member usage. */ | |
b34976b6 AM |
164 | HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont, |
165 | _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0, | |
166 | FALSE) | |
8d88c4ca NC |
167 | }; |
168 | ||
d8045f23 NC |
169 | #define IS_X86_64_PCREL_TYPE(TYPE) \ |
170 | ( ((TYPE) == R_X86_64_PC8) \ | |
171 | || ((TYPE) == R_X86_64_PC16) \ | |
172 | || ((TYPE) == R_X86_64_PC32) \ | |
173 | || ((TYPE) == R_X86_64_PC64)) | |
174 | ||
8d88c4ca | 175 | /* Map BFD relocs to the x86_64 elf relocs. */ |
70256ad8 AJ |
176 | struct elf_reloc_map |
177 | { | |
8d88c4ca NC |
178 | bfd_reloc_code_real_type bfd_reloc_val; |
179 | unsigned char elf_reloc_val; | |
180 | }; | |
181 | ||
dc810e39 | 182 | static const struct elf_reloc_map x86_64_reloc_map[] = |
8d88c4ca | 183 | { |
70256ad8 AJ |
184 | { BFD_RELOC_NONE, R_X86_64_NONE, }, |
185 | { BFD_RELOC_64, R_X86_64_64, }, | |
186 | { BFD_RELOC_32_PCREL, R_X86_64_PC32, }, | |
187 | { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,}, | |
188 | { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,}, | |
189 | { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, }, | |
190 | { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, }, | |
191 | { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, }, | |
192 | { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, }, | |
193 | { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, }, | |
194 | { BFD_RELOC_32, R_X86_64_32, }, | |
195 | { BFD_RELOC_X86_64_32S, R_X86_64_32S, }, | |
196 | { BFD_RELOC_16, R_X86_64_16, }, | |
197 | { BFD_RELOC_16_PCREL, R_X86_64_PC16, }, | |
198 | { BFD_RELOC_8, R_X86_64_8, }, | |
199 | { BFD_RELOC_8_PCREL, R_X86_64_PC8, }, | |
bffbf940 JJ |
200 | { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, }, |
201 | { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, }, | |
202 | { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, }, | |
203 | { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, }, | |
204 | { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, }, | |
205 | { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, }, | |
206 | { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, }, | |
207 | { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, }, | |
d6ab8113 JB |
208 | { BFD_RELOC_64_PCREL, R_X86_64_PC64, }, |
209 | { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, }, | |
210 | { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, }, | |
7b81dfbb AJ |
211 | { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, }, |
212 | { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, }, | |
213 | { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, }, | |
214 | { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, }, | |
215 | { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, }, | |
67a4f2b7 AO |
216 | { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, }, |
217 | { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, }, | |
218 | { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, }, | |
cbe950e9 | 219 | { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, }, |
fe4770f4 AJ |
220 | { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, }, |
221 | { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, }, | |
8d88c4ca NC |
222 | }; |
223 | ||
67a4f2b7 AO |
224 | static reloc_howto_type * |
225 | elf64_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type) | |
226 | { | |
227 | unsigned i; | |
228 | ||
229 | if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT | |
230 | || r_type >= (unsigned int) R_X86_64_max) | |
231 | { | |
232 | if (r_type >= (unsigned int) R_X86_64_standard) | |
233 | { | |
234 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
235 | abfd, (int) r_type); | |
236 | r_type = R_X86_64_NONE; | |
237 | } | |
238 | i = r_type; | |
239 | } | |
240 | else | |
241 | i = r_type - (unsigned int) R_X86_64_vt_offset; | |
242 | BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type); | |
243 | return &x86_64_elf_howto_table[i]; | |
244 | } | |
8d88c4ca NC |
245 | |
246 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
247 | static reloc_howto_type * | |
67a4f2b7 | 248 | elf64_x86_64_reloc_type_lookup (bfd *abfd, |
27482721 | 249 | bfd_reloc_code_real_type code) |
8d88c4ca NC |
250 | { |
251 | unsigned int i; | |
27482721 | 252 | |
8d88c4ca NC |
253 | for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map); |
254 | i++) | |
255 | { | |
256 | if (x86_64_reloc_map[i].bfd_reloc_val == code) | |
67a4f2b7 AO |
257 | return elf64_x86_64_rtype_to_howto (abfd, |
258 | x86_64_reloc_map[i].elf_reloc_val); | |
8d88c4ca NC |
259 | } |
260 | return 0; | |
261 | } | |
262 | ||
157090f7 AM |
263 | static reloc_howto_type * |
264 | elf64_x86_64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
265 | const char *r_name) | |
266 | { | |
267 | unsigned int i; | |
268 | ||
269 | for (i = 0; | |
270 | i < (sizeof (x86_64_elf_howto_table) | |
271 | / sizeof (x86_64_elf_howto_table[0])); | |
272 | i++) | |
273 | if (x86_64_elf_howto_table[i].name != NULL | |
274 | && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0) | |
275 | return &x86_64_elf_howto_table[i]; | |
276 | ||
277 | return NULL; | |
278 | } | |
279 | ||
8d88c4ca | 280 | /* Given an x86_64 ELF reloc type, fill in an arelent structure. */ |
8da6118f | 281 | |
8d88c4ca | 282 | static void |
27482721 AJ |
283 | elf64_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
284 | Elf_Internal_Rela *dst) | |
8d88c4ca | 285 | { |
67a4f2b7 | 286 | unsigned r_type; |
8d88c4ca NC |
287 | |
288 | r_type = ELF64_R_TYPE (dst->r_info); | |
67a4f2b7 | 289 | cache_ptr->howto = elf64_x86_64_rtype_to_howto (abfd, r_type); |
8d88c4ca NC |
290 | BFD_ASSERT (r_type == cache_ptr->howto->type); |
291 | } | |
70256ad8 | 292 | \f |
3bab7989 | 293 | /* Support for core dump NOTE sections. */ |
b34976b6 | 294 | static bfd_boolean |
27482721 | 295 | elf64_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
296 | { |
297 | int offset; | |
eea6121a | 298 | size_t size; |
3bab7989 ML |
299 | |
300 | switch (note->descsz) | |
301 | { | |
302 | default: | |
b34976b6 | 303 | return FALSE; |
3bab7989 ML |
304 | |
305 | case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */ | |
306 | /* pr_cursig */ | |
cedb70c5 | 307 | elf_tdata (abfd)->core_signal |
3bab7989 ML |
308 | = bfd_get_16 (abfd, note->descdata + 12); |
309 | ||
310 | /* pr_pid */ | |
cedb70c5 | 311 | elf_tdata (abfd)->core_pid |
3bab7989 ML |
312 | = bfd_get_32 (abfd, note->descdata + 32); |
313 | ||
314 | /* pr_reg */ | |
315 | offset = 112; | |
eea6121a | 316 | size = 216; |
3bab7989 ML |
317 | |
318 | break; | |
319 | } | |
320 | ||
321 | /* Make a ".reg/999" section. */ | |
322 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 323 | size, note->descpos + offset); |
3bab7989 ML |
324 | } |
325 | ||
b34976b6 | 326 | static bfd_boolean |
27482721 | 327 | elf64_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
3bab7989 ML |
328 | { |
329 | switch (note->descsz) | |
330 | { | |
331 | default: | |
b34976b6 | 332 | return FALSE; |
3bab7989 ML |
333 | |
334 | case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */ | |
335 | elf_tdata (abfd)->core_program | |
336 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
337 | elf_tdata (abfd)->core_command | |
338 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
339 | } | |
340 | ||
341 | /* Note that for some reason, a spurious space is tacked | |
342 | onto the end of the args in some (at least one anyway) | |
343 | implementations, so strip it off if it exists. */ | |
344 | ||
345 | { | |
346 | char *command = elf_tdata (abfd)->core_command; | |
347 | int n = strlen (command); | |
348 | ||
349 | if (0 < n && command[n - 1] == ' ') | |
350 | command[n - 1] = '\0'; | |
351 | } | |
352 | ||
b34976b6 | 353 | return TRUE; |
3bab7989 ML |
354 | } |
355 | \f | |
407443a3 | 356 | /* Functions for the x86-64 ELF linker. */ |
70256ad8 | 357 | |
407443a3 | 358 | /* The name of the dynamic interpreter. This is put in the .interp |
70256ad8 AJ |
359 | section. */ |
360 | ||
407443a3 | 361 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1" |
70256ad8 | 362 | |
d40d037c AJ |
363 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
364 | copying dynamic variables from a shared lib into an app's dynbss | |
365 | section, and instead use a dynamic relocation to point into the | |
366 | shared lib. */ | |
367 | #define ELIMINATE_COPY_RELOCS 1 | |
368 | ||
70256ad8 AJ |
369 | /* The size in bytes of an entry in the global offset table. */ |
370 | ||
371 | #define GOT_ENTRY_SIZE 8 | |
8d88c4ca | 372 | |
70256ad8 | 373 | /* The size in bytes of an entry in the procedure linkage table. */ |
8d88c4ca | 374 | |
70256ad8 AJ |
375 | #define PLT_ENTRY_SIZE 16 |
376 | ||
377 | /* The first entry in a procedure linkage table looks like this. See the | |
378 | SVR4 ABI i386 supplement and the x86-64 ABI to see how this works. */ | |
379 | ||
380 | static const bfd_byte elf64_x86_64_plt0_entry[PLT_ENTRY_SIZE] = | |
381 | { | |
653165cc AJ |
382 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ |
383 | 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */ | |
10efb593 | 384 | 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */ |
70256ad8 AJ |
385 | }; |
386 | ||
387 | /* Subsequent entries in a procedure linkage table look like this. */ | |
388 | ||
389 | static const bfd_byte elf64_x86_64_plt_entry[PLT_ENTRY_SIZE] = | |
390 | { | |
653165cc | 391 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ |
407443a3 | 392 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ |
653165cc | 393 | 0x68, /* pushq immediate */ |
70256ad8 AJ |
394 | 0, 0, 0, 0, /* replaced with index into relocation table. */ |
395 | 0xe9, /* jmp relative */ | |
396 | 0, 0, 0, 0 /* replaced with offset to start of .plt0. */ | |
397 | }; | |
398 | ||
70256ad8 AJ |
399 | /* x86-64 ELF linker hash entry. */ |
400 | ||
401 | struct elf64_x86_64_link_hash_entry | |
402 | { | |
c434dee6 | 403 | struct elf_link_hash_entry elf; |
70256ad8 | 404 | |
c434dee6 | 405 | /* Track dynamic relocs copied for this symbol. */ |
e03a8ed8 | 406 | struct elf_dyn_relocs *dyn_relocs; |
bffbf940 JJ |
407 | |
408 | #define GOT_UNKNOWN 0 | |
409 | #define GOT_NORMAL 1 | |
410 | #define GOT_TLS_GD 2 | |
411 | #define GOT_TLS_IE 3 | |
67a4f2b7 AO |
412 | #define GOT_TLS_GDESC 4 |
413 | #define GOT_TLS_GD_BOTH_P(type) \ | |
414 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
415 | #define GOT_TLS_GD_P(type) \ | |
416 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
417 | #define GOT_TLS_GDESC_P(type) \ | |
418 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
419 | #define GOT_TLS_GD_ANY_P(type) \ | |
420 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
bffbf940 | 421 | unsigned char tls_type; |
67a4f2b7 AO |
422 | |
423 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, | |
424 | starting at the end of the jump table. */ | |
425 | bfd_vma tlsdesc_got; | |
bffbf940 JJ |
426 | }; |
427 | ||
428 | #define elf64_x86_64_hash_entry(ent) \ | |
429 | ((struct elf64_x86_64_link_hash_entry *)(ent)) | |
430 | ||
431 | struct elf64_x86_64_obj_tdata | |
432 | { | |
433 | struct elf_obj_tdata root; | |
434 | ||
435 | /* tls_type for each local got entry. */ | |
436 | char *local_got_tls_type; | |
67a4f2b7 AO |
437 | |
438 | /* GOTPLT entries for TLS descriptors. */ | |
439 | bfd_vma *local_tlsdesc_gotent; | |
70256ad8 AJ |
440 | }; |
441 | ||
bffbf940 JJ |
442 | #define elf64_x86_64_tdata(abfd) \ |
443 | ((struct elf64_x86_64_obj_tdata *) (abfd)->tdata.any) | |
444 | ||
445 | #define elf64_x86_64_local_got_tls_type(abfd) \ | |
446 | (elf64_x86_64_tdata (abfd)->local_got_tls_type) | |
447 | ||
67a4f2b7 AO |
448 | #define elf64_x86_64_local_tlsdesc_gotent(abfd) \ |
449 | (elf64_x86_64_tdata (abfd)->local_tlsdesc_gotent) | |
bffbf940 | 450 | |
0ffa91dd NC |
451 | #define is_x86_64_elf(bfd) \ |
452 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
453 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 454 | && elf_object_id (bfd) == X86_64_ELF_DATA) |
0ffa91dd NC |
455 | |
456 | static bfd_boolean | |
457 | elf64_x86_64_mkobject (bfd *abfd) | |
458 | { | |
459 | return bfd_elf_allocate_object (abfd, sizeof (struct elf64_x86_64_obj_tdata), | |
4dfe6ac6 | 460 | X86_64_ELF_DATA); |
0ffa91dd NC |
461 | } |
462 | ||
c434dee6 | 463 | /* x86-64 ELF linker hash table. */ |
8d88c4ca | 464 | |
407443a3 AJ |
465 | struct elf64_x86_64_link_hash_table |
466 | { | |
c434dee6 | 467 | struct elf_link_hash_table elf; |
70256ad8 | 468 | |
c434dee6 | 469 | /* Short-cuts to get to dynamic linker sections. */ |
c434dee6 AJ |
470 | asection *sdynbss; |
471 | asection *srelbss; | |
70256ad8 | 472 | |
4dfe6ac6 NC |
473 | union |
474 | { | |
bffbf940 JJ |
475 | bfd_signed_vma refcount; |
476 | bfd_vma offset; | |
477 | } tls_ld_got; | |
478 | ||
67a4f2b7 AO |
479 | /* The amount of space used by the jump slots in the GOT. */ |
480 | bfd_vma sgotplt_jump_table_size; | |
481 | ||
87d72d41 AM |
482 | /* Small local sym cache. */ |
483 | struct sym_cache sym_cache; | |
9f03412a AO |
484 | |
485 | /* _TLS_MODULE_BASE_ symbol. */ | |
486 | struct bfd_link_hash_entry *tls_module_base; | |
c25bc9fc L |
487 | |
488 | /* Used by local STT_GNU_IFUNC symbols. */ | |
489 | htab_t loc_hash_table; | |
4dfe6ac6 NC |
490 | void * loc_hash_memory; |
491 | ||
492 | /* The offset into splt of the PLT entry for the TLS descriptor | |
493 | resolver. Special values are 0, if not necessary (or not found | |
494 | to be necessary yet), and -1 if needed but not determined | |
495 | yet. */ | |
496 | bfd_vma tlsdesc_plt; | |
497 | /* The offset into sgot of the GOT entry used by the PLT entry | |
498 | above. */ | |
499 | bfd_vma tlsdesc_got; | |
c434dee6 | 500 | }; |
70256ad8 AJ |
501 | |
502 | /* Get the x86-64 ELF linker hash table from a link_info structure. */ | |
8d88c4ca NC |
503 | |
504 | #define elf64_x86_64_hash_table(p) \ | |
4dfe6ac6 NC |
505 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
506 | == X86_64_ELF_DATA ? ((struct elf64_x86_64_link_hash_table *) ((p)->hash)) : NULL) | |
8d88c4ca | 507 | |
67a4f2b7 | 508 | #define elf64_x86_64_compute_jump_table_size(htab) \ |
6de2ae4a | 509 | ((htab)->elf.srelplt->reloc_count * GOT_ENTRY_SIZE) |
67a4f2b7 | 510 | |
407443a3 | 511 | /* Create an entry in an x86-64 ELF linker hash table. */ |
70256ad8 AJ |
512 | |
513 | static struct bfd_hash_entry * | |
eb4ff4d6 L |
514 | elf64_x86_64_link_hash_newfunc (struct bfd_hash_entry *entry, |
515 | struct bfd_hash_table *table, | |
516 | const char *string) | |
70256ad8 | 517 | { |
70256ad8 | 518 | /* Allocate the structure if it has not already been allocated by a |
c434dee6 AJ |
519 | subclass. */ |
520 | if (entry == NULL) | |
521 | { | |
a50b1753 NC |
522 | entry = (struct bfd_hash_entry *) |
523 | bfd_hash_allocate (table, | |
524 | sizeof (struct elf64_x86_64_link_hash_entry)); | |
c434dee6 AJ |
525 | if (entry == NULL) |
526 | return entry; | |
527 | } | |
70256ad8 AJ |
528 | |
529 | /* Call the allocation method of the superclass. */ | |
c434dee6 AJ |
530 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
531 | if (entry != NULL) | |
70256ad8 | 532 | { |
c434dee6 AJ |
533 | struct elf64_x86_64_link_hash_entry *eh; |
534 | ||
535 | eh = (struct elf64_x86_64_link_hash_entry *) entry; | |
536 | eh->dyn_relocs = NULL; | |
bffbf940 | 537 | eh->tls_type = GOT_UNKNOWN; |
67a4f2b7 | 538 | eh->tlsdesc_got = (bfd_vma) -1; |
70256ad8 AJ |
539 | } |
540 | ||
c434dee6 | 541 | return entry; |
70256ad8 AJ |
542 | } |
543 | ||
c25bc9fc L |
544 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
545 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
546 | as global symbol. We reuse indx and dynstr_index for local symbol | |
547 | hash since they aren't used by global symbols in this backend. */ | |
548 | ||
549 | static hashval_t | |
550 | elf64_x86_64_local_htab_hash (const void *ptr) | |
551 | { | |
552 | struct elf_link_hash_entry *h | |
553 | = (struct elf_link_hash_entry *) ptr; | |
d2149d72 | 554 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); |
c25bc9fc L |
555 | } |
556 | ||
557 | /* Compare local hash entries. */ | |
558 | ||
559 | static int | |
560 | elf64_x86_64_local_htab_eq (const void *ptr1, const void *ptr2) | |
561 | { | |
562 | struct elf_link_hash_entry *h1 | |
563 | = (struct elf_link_hash_entry *) ptr1; | |
564 | struct elf_link_hash_entry *h2 | |
565 | = (struct elf_link_hash_entry *) ptr2; | |
566 | ||
567 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
568 | } | |
569 | ||
570 | /* Find and/or create a hash entry for local symbol. */ | |
571 | ||
572 | static struct elf_link_hash_entry * | |
573 | elf64_x86_64_get_local_sym_hash (struct elf64_x86_64_link_hash_table *htab, | |
574 | bfd *abfd, const Elf_Internal_Rela *rel, | |
575 | bfd_boolean create) | |
576 | { | |
577 | struct elf64_x86_64_link_hash_entry e, *ret; | |
578 | asection *sec = abfd->sections; | |
d2149d72 L |
579 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, |
580 | ELF64_R_SYM (rel->r_info)); | |
c25bc9fc L |
581 | void **slot; |
582 | ||
583 | e.elf.indx = sec->id; | |
584 | e.elf.dynstr_index = ELF64_R_SYM (rel->r_info); | |
585 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
586 | create ? INSERT : NO_INSERT); | |
587 | ||
588 | if (!slot) | |
589 | return NULL; | |
590 | ||
591 | if (*slot) | |
592 | { | |
593 | ret = (struct elf64_x86_64_link_hash_entry *) *slot; | |
594 | return &ret->elf; | |
595 | } | |
596 | ||
597 | ret = (struct elf64_x86_64_link_hash_entry *) | |
598 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
599 | sizeof (struct elf64_x86_64_link_hash_entry)); | |
600 | if (ret) | |
601 | { | |
602 | memset (ret, 0, sizeof (*ret)); | |
603 | ret->elf.indx = sec->id; | |
604 | ret->elf.dynstr_index = ELF64_R_SYM (rel->r_info); | |
605 | ret->elf.dynindx = -1; | |
606 | ret->elf.plt.offset = (bfd_vma) -1; | |
607 | ret->elf.got.offset = (bfd_vma) -1; | |
608 | *slot = ret; | |
609 | } | |
610 | return &ret->elf; | |
611 | } | |
612 | ||
8d88c4ca NC |
613 | /* Create an X86-64 ELF linker hash table. */ |
614 | ||
615 | static struct bfd_link_hash_table * | |
27482721 | 616 | elf64_x86_64_link_hash_table_create (bfd *abfd) |
8d88c4ca NC |
617 | { |
618 | struct elf64_x86_64_link_hash_table *ret; | |
dc810e39 | 619 | bfd_size_type amt = sizeof (struct elf64_x86_64_link_hash_table); |
8d88c4ca | 620 | |
e2d34d7d | 621 | ret = (struct elf64_x86_64_link_hash_table *) bfd_malloc (amt); |
c434dee6 | 622 | if (ret == NULL) |
8d88c4ca NC |
623 | return NULL; |
624 | ||
eb4ff4d6 L |
625 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
626 | elf64_x86_64_link_hash_newfunc, | |
4dfe6ac6 NC |
627 | sizeof (struct elf64_x86_64_link_hash_entry), |
628 | X86_64_ELF_DATA)) | |
8d88c4ca | 629 | { |
e2d34d7d | 630 | free (ret); |
8d88c4ca NC |
631 | return NULL; |
632 | } | |
633 | ||
c434dee6 AJ |
634 | ret->sdynbss = NULL; |
635 | ret->srelbss = NULL; | |
87d72d41 | 636 | ret->sym_cache.abfd = NULL; |
67a4f2b7 AO |
637 | ret->tlsdesc_plt = 0; |
638 | ret->tlsdesc_got = 0; | |
bffbf940 | 639 | ret->tls_ld_got.refcount = 0; |
67a4f2b7 | 640 | ret->sgotplt_jump_table_size = 0; |
9f03412a | 641 | ret->tls_module_base = NULL; |
6bbec505 | 642 | |
c25bc9fc L |
643 | ret->loc_hash_table = htab_try_create (1024, |
644 | elf64_x86_64_local_htab_hash, | |
645 | elf64_x86_64_local_htab_eq, | |
646 | NULL); | |
647 | ret->loc_hash_memory = objalloc_create (); | |
648 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
649 | { | |
650 | free (ret); | |
651 | return NULL; | |
652 | } | |
653 | ||
c434dee6 AJ |
654 | return &ret->elf.root; |
655 | } | |
656 | ||
c25bc9fc L |
657 | /* Destroy an X86-64 ELF linker hash table. */ |
658 | ||
659 | static void | |
660 | elf64_x86_64_link_hash_table_free (struct bfd_link_hash_table *hash) | |
661 | { | |
662 | struct elf64_x86_64_link_hash_table *htab | |
663 | = (struct elf64_x86_64_link_hash_table *) hash; | |
664 | ||
665 | if (htab->loc_hash_table) | |
666 | htab_delete (htab->loc_hash_table); | |
667 | if (htab->loc_hash_memory) | |
668 | objalloc_free ((struct objalloc *) htab->loc_hash_memory); | |
669 | _bfd_generic_link_hash_table_free (hash); | |
670 | } | |
671 | ||
c434dee6 AJ |
672 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and |
673 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
674 | hash table. */ | |
675 | ||
b34976b6 | 676 | static bfd_boolean |
27482721 | 677 | elf64_x86_64_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
c434dee6 AJ |
678 | { |
679 | struct elf64_x86_64_link_hash_table *htab; | |
680 | ||
c434dee6 | 681 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 682 | return FALSE; |
c434dee6 | 683 | |
6de2ae4a | 684 | htab = elf64_x86_64_hash_table (info); |
4dfe6ac6 NC |
685 | if (htab == NULL) |
686 | return FALSE; | |
687 | ||
c434dee6 AJ |
688 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
689 | if (!info->shared) | |
690 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
691 | ||
6de2ae4a | 692 | if (!htab->sdynbss |
c434dee6 AJ |
693 | || (!info->shared && !htab->srelbss)) |
694 | abort (); | |
695 | ||
b34976b6 | 696 | return TRUE; |
c434dee6 AJ |
697 | } |
698 | ||
699 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
700 | ||
701 | static void | |
fcfa13d2 | 702 | elf64_x86_64_copy_indirect_symbol (struct bfd_link_info *info, |
27482721 AJ |
703 | struct elf_link_hash_entry *dir, |
704 | struct elf_link_hash_entry *ind) | |
c434dee6 AJ |
705 | { |
706 | struct elf64_x86_64_link_hash_entry *edir, *eind; | |
707 | ||
708 | edir = (struct elf64_x86_64_link_hash_entry *) dir; | |
709 | eind = (struct elf64_x86_64_link_hash_entry *) ind; | |
710 | ||
711 | if (eind->dyn_relocs != NULL) | |
712 | { | |
713 | if (edir->dyn_relocs != NULL) | |
714 | { | |
e03a8ed8 L |
715 | struct elf_dyn_relocs **pp; |
716 | struct elf_dyn_relocs *p; | |
c434dee6 | 717 | |
fcfa13d2 | 718 | /* Add reloc counts against the indirect sym to the direct sym |
c434dee6 AJ |
719 | list. Merge any entries against the same section. */ |
720 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
721 | { | |
e03a8ed8 | 722 | struct elf_dyn_relocs *q; |
c434dee6 AJ |
723 | |
724 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
725 | if (q->sec == p->sec) | |
726 | { | |
727 | q->pc_count += p->pc_count; | |
728 | q->count += p->count; | |
729 | *pp = p->next; | |
730 | break; | |
731 | } | |
732 | if (q == NULL) | |
733 | pp = &p->next; | |
734 | } | |
735 | *pp = edir->dyn_relocs; | |
736 | } | |
737 | ||
738 | edir->dyn_relocs = eind->dyn_relocs; | |
739 | eind->dyn_relocs = NULL; | |
740 | } | |
741 | ||
bffbf940 JJ |
742 | if (ind->root.type == bfd_link_hash_indirect |
743 | && dir->got.refcount <= 0) | |
744 | { | |
745 | edir->tls_type = eind->tls_type; | |
746 | eind->tls_type = GOT_UNKNOWN; | |
747 | } | |
748 | ||
d40d037c AJ |
749 | if (ELIMINATE_COPY_RELOCS |
750 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
751 | && dir->dynamic_adjusted) |
752 | { | |
753 | /* If called to transfer flags for a weakdef during processing | |
754 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
755 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
756 | dir->ref_dynamic |= ind->ref_dynamic; | |
757 | dir->ref_regular |= ind->ref_regular; | |
758 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
759 | dir->needs_plt |= ind->needs_plt; | |
760 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
761 | } | |
d40d037c | 762 | else |
fcfa13d2 | 763 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
8d88c4ca NC |
764 | } |
765 | ||
b34976b6 | 766 | static bfd_boolean |
27482721 | 767 | elf64_x86_64_elf_object_p (bfd *abfd) |
bffbf940 | 768 | { |
8d88c4ca NC |
769 | /* Set the right machine number for an x86-64 elf64 file. */ |
770 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); | |
b34976b6 | 771 | return TRUE; |
8d88c4ca NC |
772 | } |
773 | ||
142411ca L |
774 | typedef union |
775 | { | |
776 | unsigned char c[2]; | |
777 | uint16_t i; | |
778 | } | |
779 | x86_64_opcode16; | |
780 | ||
781 | typedef union | |
782 | { | |
783 | unsigned char c[4]; | |
784 | uint32_t i; | |
785 | } | |
786 | x86_64_opcode32; | |
787 | ||
788 | /* Return TRUE if the TLS access code sequence support transition | |
789 | from R_TYPE. */ | |
790 | ||
791 | static bfd_boolean | |
792 | elf64_x86_64_check_tls_transition (bfd *abfd, asection *sec, | |
793 | bfd_byte *contents, | |
794 | Elf_Internal_Shdr *symtab_hdr, | |
795 | struct elf_link_hash_entry **sym_hashes, | |
796 | unsigned int r_type, | |
797 | const Elf_Internal_Rela *rel, | |
798 | const Elf_Internal_Rela *relend) | |
bffbf940 | 799 | { |
142411ca L |
800 | unsigned int val; |
801 | unsigned long r_symndx; | |
802 | struct elf_link_hash_entry *h; | |
803 | bfd_vma offset; | |
804 | ||
805 | /* Get the section contents. */ | |
806 | if (contents == NULL) | |
807 | { | |
808 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
809 | contents = elf_section_data (sec)->this_hdr.contents; | |
810 | else | |
811 | { | |
812 | /* FIXME: How to better handle error condition? */ | |
813 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
814 | return FALSE; | |
bffbf940 | 815 | |
142411ca L |
816 | /* Cache the section contents for elf_link_input_bfd. */ |
817 | elf_section_data (sec)->this_hdr.contents = contents; | |
818 | } | |
819 | } | |
820 | ||
821 | offset = rel->r_offset; | |
bffbf940 | 822 | switch (r_type) |
142411ca L |
823 | { |
824 | case R_X86_64_TLSGD: | |
825 | case R_X86_64_TLSLD: | |
826 | if ((rel + 1) >= relend) | |
827 | return FALSE; | |
828 | ||
829 | if (r_type == R_X86_64_TLSGD) | |
830 | { | |
831 | /* Check transition from GD access model. Only | |
832 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi | |
833 | .word 0x6666; rex64; call __tls_get_addr | |
834 | can transit to different access model. */ | |
835 | ||
836 | static x86_64_opcode32 leaq = { { 0x66, 0x48, 0x8d, 0x3d } }, | |
837 | call = { { 0x66, 0x66, 0x48, 0xe8 } }; | |
838 | if (offset < 4 | |
839 | || (offset + 12) > sec->size | |
840 | || bfd_get_32 (abfd, contents + offset - 4) != leaq.i | |
841 | || bfd_get_32 (abfd, contents + offset + 4) != call.i) | |
842 | return FALSE; | |
843 | } | |
844 | else | |
845 | { | |
846 | /* Check transition from LD access model. Only | |
847 | leaq foo@tlsld(%rip), %rdi; | |
848 | call __tls_get_addr | |
849 | can transit to different access model. */ | |
850 | ||
851 | static x86_64_opcode32 ld = { { 0x48, 0x8d, 0x3d, 0xe8 } }; | |
852 | x86_64_opcode32 op; | |
853 | ||
854 | if (offset < 3 || (offset + 9) > sec->size) | |
855 | return FALSE; | |
856 | ||
857 | op.i = bfd_get_32 (abfd, contents + offset - 3); | |
858 | op.c[3] = bfd_get_8 (abfd, contents + offset + 4); | |
859 | if (op.i != ld.i) | |
860 | return FALSE; | |
861 | } | |
862 | ||
863 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
864 | if (r_symndx < symtab_hdr->sh_info) | |
865 | return FALSE; | |
866 | ||
867 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
c4fb387b L |
868 | /* Use strncmp to check __tls_get_addr since __tls_get_addr |
869 | may be versioned. */ | |
142411ca L |
870 | return (h != NULL |
871 | && h->root.root.string != NULL | |
872 | && (ELF64_R_TYPE (rel[1].r_info) == R_X86_64_PC32 | |
873 | || ELF64_R_TYPE (rel[1].r_info) == R_X86_64_PLT32) | |
c4fb387b L |
874 | && (strncmp (h->root.root.string, |
875 | "__tls_get_addr", 14) == 0)); | |
142411ca L |
876 | |
877 | case R_X86_64_GOTTPOFF: | |
878 | /* Check transition from IE access model: | |
879 | movq foo@gottpoff(%rip), %reg | |
880 | addq foo@gottpoff(%rip), %reg | |
881 | */ | |
882 | ||
883 | if (offset < 3 || (offset + 4) > sec->size) | |
884 | return FALSE; | |
885 | ||
886 | val = bfd_get_8 (abfd, contents + offset - 3); | |
887 | if (val != 0x48 && val != 0x4c) | |
888 | return FALSE; | |
889 | ||
890 | val = bfd_get_8 (abfd, contents + offset - 2); | |
891 | if (val != 0x8b && val != 0x03) | |
892 | return FALSE; | |
893 | ||
894 | val = bfd_get_8 (abfd, contents + offset - 1); | |
895 | return (val & 0xc7) == 5; | |
896 | ||
897 | case R_X86_64_GOTPC32_TLSDESC: | |
898 | /* Check transition from GDesc access model: | |
899 | leaq x@tlsdesc(%rip), %rax | |
900 | ||
901 | Make sure it's a leaq adding rip to a 32-bit offset | |
902 | into any register, although it's probably almost always | |
903 | going to be rax. */ | |
904 | ||
905 | if (offset < 3 || (offset + 4) > sec->size) | |
906 | return FALSE; | |
907 | ||
908 | val = bfd_get_8 (abfd, contents + offset - 3); | |
909 | if ((val & 0xfb) != 0x48) | |
910 | return FALSE; | |
911 | ||
912 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
913 | return FALSE; | |
914 | ||
915 | val = bfd_get_8 (abfd, contents + offset - 1); | |
916 | return (val & 0xc7) == 0x05; | |
917 | ||
918 | case R_X86_64_TLSDESC_CALL: | |
919 | /* Check transition from GDesc access model: | |
920 | call *x@tlsdesc(%rax) | |
921 | */ | |
922 | if (offset + 2 <= sec->size) | |
923 | { | |
924 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
925 | static x86_64_opcode16 call = { { 0xff, 0x10 } }; | |
926 | return bfd_get_16 (abfd, contents + offset) == call.i; | |
927 | } | |
928 | ||
929 | return FALSE; | |
930 | ||
931 | default: | |
932 | abort (); | |
933 | } | |
934 | } | |
935 | ||
936 | /* Return TRUE if the TLS access transition is OK or no transition | |
937 | will be performed. Update R_TYPE if there is a transition. */ | |
938 | ||
939 | static bfd_boolean | |
940 | elf64_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd, | |
941 | asection *sec, bfd_byte *contents, | |
942 | Elf_Internal_Shdr *symtab_hdr, | |
943 | struct elf_link_hash_entry **sym_hashes, | |
944 | unsigned int *r_type, int tls_type, | |
945 | const Elf_Internal_Rela *rel, | |
946 | const Elf_Internal_Rela *relend, | |
4c544807 L |
947 | struct elf_link_hash_entry *h, |
948 | unsigned long r_symndx) | |
142411ca L |
949 | { |
950 | unsigned int from_type = *r_type; | |
951 | unsigned int to_type = from_type; | |
952 | bfd_boolean check = TRUE; | |
953 | ||
954 | switch (from_type) | |
bffbf940 JJ |
955 | { |
956 | case R_X86_64_TLSGD: | |
67a4f2b7 AO |
957 | case R_X86_64_GOTPC32_TLSDESC: |
958 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 959 | case R_X86_64_GOTTPOFF: |
1d85728f | 960 | if (info->executable) |
142411ca L |
961 | { |
962 | if (h == NULL) | |
963 | to_type = R_X86_64_TPOFF32; | |
964 | else | |
965 | to_type = R_X86_64_GOTTPOFF; | |
966 | } | |
967 | ||
968 | /* When we are called from elf64_x86_64_relocate_section, | |
969 | CONTENTS isn't NULL and there may be additional transitions | |
970 | based on TLS_TYPE. */ | |
971 | if (contents != NULL) | |
972 | { | |
973 | unsigned int new_to_type = to_type; | |
974 | ||
1d85728f | 975 | if (info->executable |
142411ca L |
976 | && h != NULL |
977 | && h->dynindx == -1 | |
978 | && tls_type == GOT_TLS_IE) | |
979 | new_to_type = R_X86_64_TPOFF32; | |
980 | ||
981 | if (to_type == R_X86_64_TLSGD | |
982 | || to_type == R_X86_64_GOTPC32_TLSDESC | |
983 | || to_type == R_X86_64_TLSDESC_CALL) | |
984 | { | |
985 | if (tls_type == GOT_TLS_IE) | |
986 | new_to_type = R_X86_64_GOTTPOFF; | |
987 | } | |
988 | ||
989 | /* We checked the transition before when we were called from | |
990 | elf64_x86_64_check_relocs. We only want to check the new | |
991 | transition which hasn't been checked before. */ | |
992 | check = new_to_type != to_type && from_type == to_type; | |
993 | to_type = new_to_type; | |
994 | } | |
995 | ||
996 | break; | |
997 | ||
bffbf940 | 998 | case R_X86_64_TLSLD: |
1d85728f | 999 | if (info->executable) |
142411ca L |
1000 | to_type = R_X86_64_TPOFF32; |
1001 | break; | |
1002 | ||
1003 | default: | |
1004 | return TRUE; | |
bffbf940 JJ |
1005 | } |
1006 | ||
142411ca L |
1007 | /* Return TRUE if there is no transition. */ |
1008 | if (from_type == to_type) | |
1009 | return TRUE; | |
1010 | ||
1011 | /* Check if the transition can be performed. */ | |
1012 | if (check | |
1013 | && ! elf64_x86_64_check_tls_transition (abfd, sec, contents, | |
1014 | symtab_hdr, sym_hashes, | |
1015 | from_type, rel, relend)) | |
1016 | { | |
2f629d23 | 1017 | reloc_howto_type *from, *to; |
4c544807 | 1018 | const char *name; |
142411ca L |
1019 | |
1020 | from = elf64_x86_64_rtype_to_howto (abfd, from_type); | |
1021 | to = elf64_x86_64_rtype_to_howto (abfd, to_type); | |
1022 | ||
4c544807 L |
1023 | if (h) |
1024 | name = h->root.root.string; | |
1025 | else | |
1026 | { | |
4c544807 | 1027 | struct elf64_x86_64_link_hash_table *htab; |
4dfe6ac6 | 1028 | |
4c544807 | 1029 | htab = elf64_x86_64_hash_table (info); |
4dfe6ac6 NC |
1030 | if (htab == NULL) |
1031 | name = "*unknown*"; | |
1032 | else | |
1033 | { | |
1034 | Elf_Internal_Sym *isym; | |
1035 | ||
1036 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1037 | abfd, r_symndx); | |
1038 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1039 | } | |
4c544807 L |
1040 | } |
1041 | ||
142411ca L |
1042 | (*_bfd_error_handler) |
1043 | (_("%B: TLS transition from %s to %s against `%s' at 0x%lx " | |
1044 | "in section `%A' failed"), | |
4c544807 | 1045 | abfd, sec, from->name, to->name, name, |
142411ca L |
1046 | (unsigned long) rel->r_offset); |
1047 | bfd_set_error (bfd_error_bad_value); | |
1048 | return FALSE; | |
1049 | } | |
1050 | ||
1051 | *r_type = to_type; | |
1052 | return TRUE; | |
bffbf940 JJ |
1053 | } |
1054 | ||
70256ad8 | 1055 | /* Look through the relocs for a section during the first phase, and |
c434dee6 AJ |
1056 | calculate needed space in the global offset table, procedure |
1057 | linkage table, and dynamic reloc sections. */ | |
70256ad8 | 1058 | |
b34976b6 | 1059 | static bfd_boolean |
142411ca L |
1060 | elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1061 | asection *sec, | |
27482721 | 1062 | const Elf_Internal_Rela *relocs) |
70256ad8 | 1063 | { |
c434dee6 | 1064 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 AJ |
1065 | Elf_Internal_Shdr *symtab_hdr; |
1066 | struct elf_link_hash_entry **sym_hashes; | |
70256ad8 AJ |
1067 | const Elf_Internal_Rela *rel; |
1068 | const Elf_Internal_Rela *rel_end; | |
70256ad8 AJ |
1069 | asection *sreloc; |
1070 | ||
1049f94e | 1071 | if (info->relocatable) |
b34976b6 | 1072 | return TRUE; |
70256ad8 | 1073 | |
0ffa91dd NC |
1074 | BFD_ASSERT (is_x86_64_elf (abfd)); |
1075 | ||
c434dee6 | 1076 | htab = elf64_x86_64_hash_table (info); |
4dfe6ac6 NC |
1077 | if (htab == NULL) |
1078 | return FALSE; | |
1079 | ||
0ffa91dd | 1080 | symtab_hdr = &elf_symtab_hdr (abfd); |
70256ad8 | 1081 | sym_hashes = elf_sym_hashes (abfd); |
70256ad8 | 1082 | |
c434dee6 | 1083 | sreloc = NULL; |
cbe950e9 | 1084 | |
70256ad8 AJ |
1085 | rel_end = relocs + sec->reloc_count; |
1086 | for (rel = relocs; rel < rel_end; rel++) | |
1087 | { | |
bffbf940 | 1088 | unsigned int r_type; |
70256ad8 AJ |
1089 | unsigned long r_symndx; |
1090 | struct elf_link_hash_entry *h; | |
4c544807 L |
1091 | Elf_Internal_Sym *isym; |
1092 | const char *name; | |
70256ad8 AJ |
1093 | |
1094 | r_symndx = ELF64_R_SYM (rel->r_info); | |
bffbf940 | 1095 | r_type = ELF64_R_TYPE (rel->r_info); |
c434dee6 AJ |
1096 | |
1097 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
1098 | { | |
d003868e AM |
1099 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1100 | abfd, r_symndx); | |
b34976b6 | 1101 | return FALSE; |
c434dee6 AJ |
1102 | } |
1103 | ||
70256ad8 | 1104 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1105 | { |
1106 | /* A local symbol. */ | |
c2e61a4e L |
1107 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1108 | abfd, r_symndx); | |
1109 | if (isym == NULL) | |
1110 | return FALSE; | |
c25bc9fc L |
1111 | |
1112 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
c25bc9fc L |
1113 | if (ELF64_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
1114 | { | |
1115 | h = elf64_x86_64_get_local_sym_hash (htab, abfd, rel, | |
1116 | TRUE); | |
1117 | if (h == NULL) | |
c2e61a4e | 1118 | return FALSE; |
6bbec505 | 1119 | |
c25bc9fc L |
1120 | /* Fake a STT_GNU_IFUNC symbol. */ |
1121 | h->type = STT_GNU_IFUNC; | |
1122 | h->def_regular = 1; | |
1123 | h->ref_regular = 1; | |
1124 | h->forced_local = 1; | |
1125 | h->root.type = bfd_link_hash_defined; | |
1126 | } | |
1127 | else | |
1128 | h = NULL; | |
1129 | } | |
70256ad8 | 1130 | else |
71cb9464 | 1131 | { |
4c544807 | 1132 | isym = NULL; |
71cb9464 L |
1133 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1134 | while (h->root.type == bfd_link_hash_indirect | |
1135 | || h->root.type == bfd_link_hash_warning) | |
1136 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c25bc9fc | 1137 | } |
cbe950e9 | 1138 | |
c25bc9fc L |
1139 | if (h != NULL) |
1140 | { | |
cbe950e9 L |
1141 | /* Create the ifunc sections for static executables. If we |
1142 | never see an indirect function symbol nor we are building | |
1143 | a static executable, those sections will be empty and | |
1144 | won't appear in output. */ | |
1145 | switch (r_type) | |
1146 | { | |
1147 | default: | |
1148 | break; | |
1149 | ||
1150 | case R_X86_64_32S: | |
1151 | case R_X86_64_32: | |
1152 | case R_X86_64_64: | |
1153 | case R_X86_64_PC32: | |
1154 | case R_X86_64_PC64: | |
1155 | case R_X86_64_PLT32: | |
1156 | case R_X86_64_GOTPCREL: | |
1157 | case R_X86_64_GOTPCREL64: | |
6de2ae4a | 1158 | if (!_bfd_elf_create_ifunc_sections (abfd, info)) |
c2e61a4e | 1159 | return FALSE; |
cbe950e9 L |
1160 | break; |
1161 | } | |
1162 | ||
1163 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle | |
1164 | it here if it is defined in a non-shared object. */ | |
1165 | if (h->type == STT_GNU_IFUNC | |
1166 | && h->def_regular) | |
1167 | { | |
1168 | /* It is referenced by a non-shared object. */ | |
1169 | h->ref_regular = 1; | |
7ae26bc1 | 1170 | h->needs_plt = 1; |
6bbec505 | 1171 | |
cbe950e9 L |
1172 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1173 | h->plt.refcount += 1; | |
1174 | ||
1175 | /* STT_GNU_IFUNC needs dynamic sections. */ | |
1176 | if (htab->elf.dynobj == NULL) | |
1177 | htab->elf.dynobj = abfd; | |
1178 | ||
1179 | switch (r_type) | |
1180 | { | |
048cbda4 | 1181 | default: |
4c544807 L |
1182 | if (h->root.root.string) |
1183 | name = h->root.root.string; | |
1184 | else | |
1185 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1186 | NULL); | |
048cbda4 L |
1187 | (*_bfd_error_handler) |
1188 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
1189 | "symbol `%s' isn't handled by %s"), abfd, | |
1190 | x86_64_elf_howto_table[r_type].name, | |
4c544807 | 1191 | name, __FUNCTION__); |
048cbda4 | 1192 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1193 | return FALSE; |
cbe950e9 | 1194 | |
710ab287 L |
1195 | case R_X86_64_64: |
1196 | h->non_got_ref = 1; | |
1197 | h->pointer_equality_needed = 1; | |
1198 | if (info->shared) | |
1199 | { | |
710ab287 L |
1200 | /* We must copy these reloc types into the output |
1201 | file. Create a reloc section in dynobj and | |
1202 | make room for this reloc. */ | |
e03a8ed8 L |
1203 | sreloc = _bfd_elf_create_ifunc_dyn_reloc |
1204 | (abfd, info, sec, sreloc, | |
1205 | &((struct elf64_x86_64_link_hash_entry *) h)->dyn_relocs); | |
710ab287 | 1206 | if (sreloc == NULL) |
c2e61a4e | 1207 | return FALSE; |
710ab287 L |
1208 | } |
1209 | break; | |
1210 | ||
cbe950e9 L |
1211 | case R_X86_64_32S: |
1212 | case R_X86_64_32: | |
cbe950e9 L |
1213 | case R_X86_64_PC32: |
1214 | case R_X86_64_PC64: | |
1215 | h->non_got_ref = 1; | |
1216 | if (r_type != R_X86_64_PC32 | |
1217 | && r_type != R_X86_64_PC64) | |
1218 | h->pointer_equality_needed = 1; | |
1219 | break; | |
1220 | ||
1221 | case R_X86_64_PLT32: | |
1222 | break; | |
1223 | ||
1224 | case R_X86_64_GOTPCREL: | |
1225 | case R_X86_64_GOTPCREL64: | |
7afd84dc | 1226 | h->got.refcount += 1; |
6de2ae4a L |
1227 | if (htab->elf.sgot == NULL |
1228 | && !_bfd_elf_create_got_section (htab->elf.dynobj, | |
1229 | info)) | |
c2e61a4e | 1230 | return FALSE; |
cbe950e9 L |
1231 | break; |
1232 | } | |
1233 | ||
1234 | continue; | |
1235 | } | |
71cb9464 | 1236 | } |
70256ad8 | 1237 | |
142411ca L |
1238 | if (! elf64_x86_64_tls_transition (info, abfd, sec, NULL, |
1239 | symtab_hdr, sym_hashes, | |
1240 | &r_type, GOT_UNKNOWN, | |
4c544807 | 1241 | rel, rel_end, h, r_symndx)) |
c2e61a4e | 1242 | return FALSE; |
142411ca | 1243 | |
bffbf940 | 1244 | switch (r_type) |
70256ad8 | 1245 | { |
bffbf940 JJ |
1246 | case R_X86_64_TLSLD: |
1247 | htab->tls_ld_got.refcount += 1; | |
1248 | goto create_got; | |
1249 | ||
1250 | case R_X86_64_TPOFF32: | |
9b769489 | 1251 | if (!info->executable) |
70256ad8 | 1252 | { |
09a24cbf | 1253 | if (h) |
4c544807 L |
1254 | name = h->root.root.string; |
1255 | else | |
1256 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1257 | NULL); | |
bffbf940 | 1258 | (*_bfd_error_handler) |
d003868e AM |
1259 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
1260 | abfd, | |
4c544807 | 1261 | x86_64_elf_howto_table[r_type].name, name); |
bffbf940 | 1262 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1263 | return FALSE; |
70256ad8 | 1264 | } |
bffbf940 | 1265 | break; |
c434dee6 | 1266 | |
bffbf940 | 1267 | case R_X86_64_GOTTPOFF: |
1d85728f | 1268 | if (!info->executable) |
bffbf940 JJ |
1269 | info->flags |= DF_STATIC_TLS; |
1270 | /* Fall through */ | |
70256ad8 | 1271 | |
bffbf940 JJ |
1272 | case R_X86_64_GOT32: |
1273 | case R_X86_64_GOTPCREL: | |
1274 | case R_X86_64_TLSGD: | |
7b81dfbb AJ |
1275 | case R_X86_64_GOT64: |
1276 | case R_X86_64_GOTPCREL64: | |
1277 | case R_X86_64_GOTPLT64: | |
67a4f2b7 AO |
1278 | case R_X86_64_GOTPC32_TLSDESC: |
1279 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 JJ |
1280 | /* This symbol requires a global offset table entry. */ |
1281 | { | |
1282 | int tls_type, old_tls_type; | |
1283 | ||
1284 | switch (r_type) | |
1285 | { | |
1286 | default: tls_type = GOT_NORMAL; break; | |
1287 | case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break; | |
1288 | case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break; | |
67a4f2b7 AO |
1289 | case R_X86_64_GOTPC32_TLSDESC: |
1290 | case R_X86_64_TLSDESC_CALL: | |
1291 | tls_type = GOT_TLS_GDESC; break; | |
bffbf940 JJ |
1292 | } |
1293 | ||
1294 | if (h != NULL) | |
1295 | { | |
7b81dfbb AJ |
1296 | if (r_type == R_X86_64_GOTPLT64) |
1297 | { | |
1298 | /* This relocation indicates that we also need | |
1299 | a PLT entry, as this is a function. We don't need | |
1300 | a PLT entry for local symbols. */ | |
1301 | h->needs_plt = 1; | |
1302 | h->plt.refcount += 1; | |
1303 | } | |
bffbf940 JJ |
1304 | h->got.refcount += 1; |
1305 | old_tls_type = elf64_x86_64_hash_entry (h)->tls_type; | |
1306 | } | |
1307 | else | |
1308 | { | |
1309 | bfd_signed_vma *local_got_refcounts; | |
1310 | ||
1311 | /* This is a global offset table entry for a local symbol. */ | |
1312 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1313 | if (local_got_refcounts == NULL) | |
1314 | { | |
1315 | bfd_size_type size; | |
1316 | ||
1317 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1318 | size *= sizeof (bfd_signed_vma) |
1319 | + sizeof (bfd_vma) + sizeof (char); | |
bffbf940 JJ |
1320 | local_got_refcounts = ((bfd_signed_vma *) |
1321 | bfd_zalloc (abfd, size)); | |
1322 | if (local_got_refcounts == NULL) | |
c2e61a4e | 1323 | return FALSE; |
bffbf940 | 1324 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
67a4f2b7 AO |
1325 | elf64_x86_64_local_tlsdesc_gotent (abfd) |
1326 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); | |
bffbf940 | 1327 | elf64_x86_64_local_got_tls_type (abfd) |
67a4f2b7 | 1328 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
bffbf940 JJ |
1329 | } |
1330 | local_got_refcounts[r_symndx] += 1; | |
1331 | old_tls_type | |
1332 | = elf64_x86_64_local_got_tls_type (abfd) [r_symndx]; | |
1333 | } | |
1334 | ||
1335 | /* If a TLS symbol is accessed using IE at least once, | |
1336 | there is no point to use dynamic model for it. */ | |
1337 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN | |
67a4f2b7 AO |
1338 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
1339 | || tls_type != GOT_TLS_IE)) | |
bffbf940 | 1340 | { |
67a4f2b7 | 1341 | if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type)) |
bffbf940 | 1342 | tls_type = old_tls_type; |
67a4f2b7 AO |
1343 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1344 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1345 | tls_type |= old_tls_type; | |
bffbf940 JJ |
1346 | else |
1347 | { | |
09a24cbf | 1348 | if (h) |
4c544807 L |
1349 | name = h->root.root.string; |
1350 | else | |
1351 | name = bfd_elf_sym_name (abfd, symtab_hdr, | |
1352 | isym, NULL); | |
bffbf940 | 1353 | (*_bfd_error_handler) |
1f7a4e42 | 1354 | (_("%B: '%s' accessed both as normal and thread local symbol"), |
4c544807 | 1355 | abfd, name); |
c2e61a4e | 1356 | return FALSE; |
bffbf940 JJ |
1357 | } |
1358 | } | |
1359 | ||
1360 | if (old_tls_type != tls_type) | |
1361 | { | |
1362 | if (h != NULL) | |
1363 | elf64_x86_64_hash_entry (h)->tls_type = tls_type; | |
1364 | else | |
1365 | elf64_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1366 | } | |
1367 | } | |
c434dee6 AJ |
1368 | /* Fall through */ |
1369 | ||
d6ab8113 JB |
1370 | case R_X86_64_GOTOFF64: |
1371 | case R_X86_64_GOTPC32: | |
7b81dfbb | 1372 | case R_X86_64_GOTPC64: |
bffbf940 | 1373 | create_got: |
6de2ae4a | 1374 | if (htab->elf.sgot == NULL) |
c434dee6 AJ |
1375 | { |
1376 | if (htab->elf.dynobj == NULL) | |
1377 | htab->elf.dynobj = abfd; | |
6de2ae4a L |
1378 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, |
1379 | info)) | |
c2e61a4e | 1380 | return FALSE; |
c434dee6 | 1381 | } |
70256ad8 AJ |
1382 | break; |
1383 | ||
1384 | case R_X86_64_PLT32: | |
1385 | /* This symbol requires a procedure linkage table entry. We | |
407443a3 AJ |
1386 | actually build the entry in adjust_dynamic_symbol, |
1387 | because this might be a case of linking PIC code which is | |
1388 | never referenced by a dynamic object, in which case we | |
1389 | don't need to generate a procedure linkage table entry | |
1390 | after all. */ | |
70256ad8 AJ |
1391 | |
1392 | /* If this is a local symbol, we resolve it directly without | |
407443a3 | 1393 | creating a procedure linkage table entry. */ |
70256ad8 AJ |
1394 | if (h == NULL) |
1395 | continue; | |
1396 | ||
f5385ebf | 1397 | h->needs_plt = 1; |
51b64d56 | 1398 | h->plt.refcount += 1; |
70256ad8 AJ |
1399 | break; |
1400 | ||
7b81dfbb AJ |
1401 | case R_X86_64_PLTOFF64: |
1402 | /* This tries to form the 'address' of a function relative | |
1403 | to GOT. For global symbols we need a PLT entry. */ | |
1404 | if (h != NULL) | |
1405 | { | |
1406 | h->needs_plt = 1; | |
1407 | h->plt.refcount += 1; | |
1408 | } | |
1409 | goto create_got; | |
1410 | ||
cc78d0af AJ |
1411 | case R_X86_64_8: |
1412 | case R_X86_64_16: | |
70256ad8 AJ |
1413 | case R_X86_64_32: |
1414 | case R_X86_64_32S: | |
1b71fb54 AJ |
1415 | /* Let's help debug shared library creation. These relocs |
1416 | cannot be used in shared libs. Don't error out for | |
1417 | sections we don't care about, such as debug sections or | |
1418 | non-constant sections. */ | |
1419 | if (info->shared | |
1420 | && (sec->flags & SEC_ALLOC) != 0 | |
1421 | && (sec->flags & SEC_READONLY) != 0) | |
1422 | { | |
09a24cbf | 1423 | if (h) |
4c544807 L |
1424 | name = h->root.root.string; |
1425 | else | |
1426 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1b71fb54 | 1427 | (*_bfd_error_handler) |
d003868e | 1428 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
4c544807 | 1429 | abfd, x86_64_elf_howto_table[r_type].name, name); |
1b71fb54 | 1430 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1431 | return FALSE; |
1b71fb54 AJ |
1432 | } |
1433 | /* Fall through. */ | |
1434 | ||
c434dee6 AJ |
1435 | case R_X86_64_PC8: |
1436 | case R_X86_64_PC16: | |
70256ad8 | 1437 | case R_X86_64_PC32: |
d6ab8113 | 1438 | case R_X86_64_PC64: |
1b71fb54 | 1439 | case R_X86_64_64: |
710ab287 | 1440 | if (h != NULL && info->executable) |
c434dee6 AJ |
1441 | { |
1442 | /* If this reloc is in a read-only section, we might | |
1443 | need a copy reloc. We can't check reliably at this | |
1444 | stage whether the section is read-only, as input | |
1445 | sections have not yet been mapped to output sections. | |
1446 | Tentatively set the flag for now, and correct in | |
1447 | adjust_dynamic_symbol. */ | |
f5385ebf | 1448 | h->non_got_ref = 1; |
c434dee6 AJ |
1449 | |
1450 | /* We may need a .plt entry if the function this reloc | |
1451 | refers to is in a shared lib. */ | |
1452 | h->plt.refcount += 1; | |
d6ab8113 | 1453 | if (r_type != R_X86_64_PC32 && r_type != R_X86_64_PC64) |
f5385ebf | 1454 | h->pointer_equality_needed = 1; |
c434dee6 | 1455 | } |
70256ad8 AJ |
1456 | |
1457 | /* If we are creating a shared library, and this is a reloc | |
1458 | against a global symbol, or a non PC relative reloc | |
1459 | against a local symbol, then we need to copy the reloc | |
1460 | into the shared library. However, if we are linking with | |
1461 | -Bsymbolic, we do not need to copy a reloc against a | |
1462 | global symbol which is defined in an object we are | |
407443a3 | 1463 | including in the link (i.e., DEF_REGULAR is set). At |
70256ad8 AJ |
1464 | this point we have not seen all the input files, so it is |
1465 | possible that DEF_REGULAR is not set now but will be set | |
c434dee6 AJ |
1466 | later (it is never cleared). In case of a weak definition, |
1467 | DEF_REGULAR may be cleared later by a strong definition in | |
1468 | a shared library. We account for that possibility below by | |
1469 | storing information in the relocs_copied field of the hash | |
1470 | table entry. A similar situation occurs when creating | |
1471 | shared libraries and symbol visibility changes render the | |
1472 | symbol local. | |
1473 | ||
1474 | If on the other hand, we are creating an executable, we | |
1475 | may need to keep relocations for symbols satisfied by a | |
1476 | dynamic library if we manage to avoid copy relocs for the | |
0f88be7a | 1477 | symbol. */ |
c434dee6 AJ |
1478 | if ((info->shared |
1479 | && (sec->flags & SEC_ALLOC) != 0 | |
d8045f23 | 1480 | && (! IS_X86_64_PCREL_TYPE (r_type) |
c434dee6 | 1481 | || (h != NULL |
55255dae | 1482 | && (! SYMBOLIC_BIND (info, h) |
c434dee6 | 1483 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1484 | || !h->def_regular)))) |
d40d037c AJ |
1485 | || (ELIMINATE_COPY_RELOCS |
1486 | && !info->shared | |
c434dee6 AJ |
1487 | && (sec->flags & SEC_ALLOC) != 0 |
1488 | && h != NULL | |
1489 | && (h->root.type == bfd_link_hash_defweak | |
0f88be7a | 1490 | || !h->def_regular))) |
70256ad8 | 1491 | { |
e03a8ed8 L |
1492 | struct elf_dyn_relocs *p; |
1493 | struct elf_dyn_relocs **head; | |
c434dee6 AJ |
1494 | |
1495 | /* We must copy these reloc types into the output file. | |
1496 | Create a reloc section in dynobj and make room for | |
1497 | this reloc. */ | |
70256ad8 AJ |
1498 | if (sreloc == NULL) |
1499 | { | |
c434dee6 AJ |
1500 | if (htab->elf.dynobj == NULL) |
1501 | htab->elf.dynobj = abfd; | |
1502 | ||
83bac4b0 NC |
1503 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1504 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
70256ad8 | 1505 | |
70256ad8 | 1506 | if (sreloc == NULL) |
c2e61a4e | 1507 | return FALSE; |
70256ad8 AJ |
1508 | } |
1509 | ||
c434dee6 AJ |
1510 | /* If this is a global symbol, we count the number of |
1511 | relocations we need for this symbol. */ | |
1512 | if (h != NULL) | |
70256ad8 | 1513 | { |
c434dee6 AJ |
1514 | head = &((struct elf64_x86_64_link_hash_entry *) h)->dyn_relocs; |
1515 | } | |
1516 | else | |
1517 | { | |
1518 | /* Track dynamic relocs needed for local syms too. | |
1519 | We really need local syms available to do this | |
1520 | easily. Oh well. */ | |
c434dee6 | 1521 | asection *s; |
87d72d41 | 1522 | void **vpp; |
87d72d41 AM |
1523 | |
1524 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1525 | abfd, r_symndx); | |
1526 | if (isym == NULL) | |
1527 | return FALSE; | |
1528 | ||
1529 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
c434dee6 | 1530 | if (s == NULL) |
87d72d41 | 1531 | s = sec; |
70256ad8 | 1532 | |
e81d3500 DD |
1533 | /* Beware of type punned pointers vs strict aliasing |
1534 | rules. */ | |
1535 | vpp = &(elf_section_data (s)->local_dynrel); | |
e03a8ed8 | 1536 | head = (struct elf_dyn_relocs **)vpp; |
c434dee6 | 1537 | } |
70256ad8 | 1538 | |
c434dee6 AJ |
1539 | p = *head; |
1540 | if (p == NULL || p->sec != sec) | |
1541 | { | |
1542 | bfd_size_type amt = sizeof *p; | |
d8045f23 | 1543 | |
e03a8ed8 | 1544 | p = ((struct elf_dyn_relocs *) |
c434dee6 | 1545 | bfd_alloc (htab->elf.dynobj, amt)); |
70256ad8 | 1546 | if (p == NULL) |
c2e61a4e | 1547 | return FALSE; |
c434dee6 AJ |
1548 | p->next = *head; |
1549 | *head = p; | |
1550 | p->sec = sec; | |
1551 | p->count = 0; | |
1552 | p->pc_count = 0; | |
70256ad8 | 1553 | } |
c434dee6 AJ |
1554 | |
1555 | p->count += 1; | |
d8045f23 | 1556 | if (IS_X86_64_PCREL_TYPE (r_type)) |
c434dee6 | 1557 | p->pc_count += 1; |
70256ad8 AJ |
1558 | } |
1559 | break; | |
fe4770f4 AJ |
1560 | |
1561 | /* This relocation describes the C++ object vtable hierarchy. | |
1562 | Reconstruct it for later use during GC. */ | |
1563 | case R_X86_64_GNU_VTINHERIT: | |
c152c796 | 1564 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
c2e61a4e | 1565 | return FALSE; |
fe4770f4 AJ |
1566 | break; |
1567 | ||
1568 | /* This relocation describes which C++ vtable entries are actually | |
1569 | used. Record for later use during GC. */ | |
1570 | case R_X86_64_GNU_VTENTRY: | |
d17e0c6e JB |
1571 | BFD_ASSERT (h != NULL); |
1572 | if (h != NULL | |
1573 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
c2e61a4e | 1574 | return FALSE; |
fe4770f4 | 1575 | break; |
c434dee6 AJ |
1576 | |
1577 | default: | |
1578 | break; | |
70256ad8 AJ |
1579 | } |
1580 | } | |
1581 | ||
b34976b6 | 1582 | return TRUE; |
70256ad8 AJ |
1583 | } |
1584 | ||
1585 | /* Return the section that should be marked against GC for a given | |
407443a3 | 1586 | relocation. */ |
70256ad8 AJ |
1587 | |
1588 | static asection * | |
27482721 | 1589 | elf64_x86_64_gc_mark_hook (asection *sec, |
07adf181 | 1590 | struct bfd_link_info *info, |
27482721 AJ |
1591 | Elf_Internal_Rela *rel, |
1592 | struct elf_link_hash_entry *h, | |
1593 | Elf_Internal_Sym *sym) | |
70256ad8 AJ |
1594 | { |
1595 | if (h != NULL) | |
07adf181 AM |
1596 | switch (ELF64_R_TYPE (rel->r_info)) |
1597 | { | |
1598 | case R_X86_64_GNU_VTINHERIT: | |
1599 | case R_X86_64_GNU_VTENTRY: | |
1600 | return NULL; | |
1601 | } | |
1602 | ||
1603 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
70256ad8 AJ |
1604 | } |
1605 | ||
407443a3 | 1606 | /* Update the got entry reference counts for the section being removed. */ |
70256ad8 | 1607 | |
b34976b6 | 1608 | static bfd_boolean |
27482721 | 1609 | elf64_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
142411ca L |
1610 | asection *sec, |
1611 | const Elf_Internal_Rela *relocs) | |
70256ad8 | 1612 | { |
4dfe6ac6 | 1613 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 AJ |
1614 | Elf_Internal_Shdr *symtab_hdr; |
1615 | struct elf_link_hash_entry **sym_hashes; | |
1616 | bfd_signed_vma *local_got_refcounts; | |
1617 | const Elf_Internal_Rela *rel, *relend; | |
c434dee6 | 1618 | |
7dda2462 TG |
1619 | if (info->relocatable) |
1620 | return TRUE; | |
1621 | ||
4dfe6ac6 NC |
1622 | htab = elf64_x86_64_hash_table (info); |
1623 | if (htab == NULL) | |
1624 | return FALSE; | |
1625 | ||
c434dee6 | 1626 | elf_section_data (sec)->local_dynrel = NULL; |
70256ad8 | 1627 | |
0ffa91dd | 1628 | symtab_hdr = &elf_symtab_hdr (abfd); |
70256ad8 AJ |
1629 | sym_hashes = elf_sym_hashes (abfd); |
1630 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1631 | ||
70256ad8 AJ |
1632 | relend = relocs + sec->reloc_count; |
1633 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1634 | { |
1635 | unsigned long r_symndx; | |
1636 | unsigned int r_type; | |
1637 | struct elf_link_hash_entry *h = NULL; | |
70256ad8 | 1638 | |
26e41594 AM |
1639 | r_symndx = ELF64_R_SYM (rel->r_info); |
1640 | if (r_symndx >= symtab_hdr->sh_info) | |
1641 | { | |
1642 | struct elf64_x86_64_link_hash_entry *eh; | |
e03a8ed8 L |
1643 | struct elf_dyn_relocs **pp; |
1644 | struct elf_dyn_relocs *p; | |
c434dee6 | 1645 | |
26e41594 | 1646 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1647 | while (h->root.type == bfd_link_hash_indirect |
1648 | || h->root.type == bfd_link_hash_warning) | |
1649 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1650 | eh = (struct elf64_x86_64_link_hash_entry *) h; |
c434dee6 | 1651 | |
26e41594 AM |
1652 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1653 | if (p->sec == sec) | |
1654 | { | |
1655 | /* Everything must go for SEC. */ | |
1656 | *pp = p->next; | |
1657 | break; | |
1658 | } | |
1659 | } | |
c434dee6 | 1660 | |
26e41594 | 1661 | r_type = ELF64_R_TYPE (rel->r_info); |
142411ca L |
1662 | if (! elf64_x86_64_tls_transition (info, abfd, sec, NULL, |
1663 | symtab_hdr, sym_hashes, | |
1664 | &r_type, GOT_UNKNOWN, | |
4c544807 | 1665 | rel, relend, h, r_symndx)) |
142411ca L |
1666 | return FALSE; |
1667 | ||
26e41594 AM |
1668 | switch (r_type) |
1669 | { | |
1670 | case R_X86_64_TLSLD: | |
4dfe6ac6 NC |
1671 | if (htab->tls_ld_got.refcount > 0) |
1672 | htab->tls_ld_got.refcount -= 1; | |
26e41594 | 1673 | break; |
c434dee6 | 1674 | |
26e41594 | 1675 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
1676 | case R_X86_64_GOTPC32_TLSDESC: |
1677 | case R_X86_64_TLSDESC_CALL: | |
26e41594 AM |
1678 | case R_X86_64_GOTTPOFF: |
1679 | case R_X86_64_GOT32: | |
1680 | case R_X86_64_GOTPCREL: | |
7b81dfbb AJ |
1681 | case R_X86_64_GOT64: |
1682 | case R_X86_64_GOTPCREL64: | |
1683 | case R_X86_64_GOTPLT64: | |
26e41594 AM |
1684 | if (h != NULL) |
1685 | { | |
7b81dfbb AJ |
1686 | if (r_type == R_X86_64_GOTPLT64 && h->plt.refcount > 0) |
1687 | h->plt.refcount -= 1; | |
26e41594 AM |
1688 | if (h->got.refcount > 0) |
1689 | h->got.refcount -= 1; | |
1690 | } | |
1691 | else if (local_got_refcounts != NULL) | |
1692 | { | |
1693 | if (local_got_refcounts[r_symndx] > 0) | |
1694 | local_got_refcounts[r_symndx] -= 1; | |
1695 | } | |
1696 | break; | |
c434dee6 | 1697 | |
26e41594 AM |
1698 | case R_X86_64_8: |
1699 | case R_X86_64_16: | |
1700 | case R_X86_64_32: | |
1701 | case R_X86_64_64: | |
1702 | case R_X86_64_32S: | |
1703 | case R_X86_64_PC8: | |
1704 | case R_X86_64_PC16: | |
1705 | case R_X86_64_PC32: | |
d6ab8113 | 1706 | case R_X86_64_PC64: |
26e41594 AM |
1707 | if (info->shared) |
1708 | break; | |
1709 | /* Fall thru */ | |
c434dee6 | 1710 | |
26e41594 | 1711 | case R_X86_64_PLT32: |
7b81dfbb | 1712 | case R_X86_64_PLTOFF64: |
26e41594 AM |
1713 | if (h != NULL) |
1714 | { | |
1715 | if (h->plt.refcount > 0) | |
1716 | h->plt.refcount -= 1; | |
1717 | } | |
1718 | break; | |
70256ad8 | 1719 | |
26e41594 AM |
1720 | default: |
1721 | break; | |
1722 | } | |
1723 | } | |
70256ad8 | 1724 | |
b34976b6 | 1725 | return TRUE; |
70256ad8 AJ |
1726 | } |
1727 | ||
1728 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1729 | regular object. The current definition is in some section of the | |
1730 | dynamic object, but we're not including those sections. We have to | |
1731 | change the definition to something the rest of the link can | |
407443a3 | 1732 | understand. */ |
70256ad8 | 1733 | |
b34976b6 | 1734 | static bfd_boolean |
27482721 AJ |
1735 | elf64_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info, |
1736 | struct elf_link_hash_entry *h) | |
70256ad8 | 1737 | { |
c434dee6 | 1738 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 | 1739 | asection *s; |
70256ad8 | 1740 | |
cbe950e9 L |
1741 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1742 | if (h->type == STT_GNU_IFUNC) | |
1743 | { | |
1744 | if (h->plt.refcount <= 0) | |
1745 | { | |
1746 | h->plt.offset = (bfd_vma) -1; | |
1747 | h->needs_plt = 0; | |
1748 | } | |
1749 | return TRUE; | |
1750 | } | |
1751 | ||
70256ad8 AJ |
1752 | /* If this is a function, put it in the procedure linkage table. We |
1753 | will fill in the contents of the procedure linkage table later, | |
1754 | when we know the address of the .got section. */ | |
1755 | if (h->type == STT_FUNC | |
f5385ebf | 1756 | || h->needs_plt) |
70256ad8 | 1757 | { |
c434dee6 | 1758 | if (h->plt.refcount <= 0 |
27482721 AJ |
1759 | || SYMBOL_CALLS_LOCAL (info, h) |
1760 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1761 | && h->root.type == bfd_link_hash_undefweak)) | |
70256ad8 | 1762 | { |
70256ad8 AJ |
1763 | /* This case can occur if we saw a PLT32 reloc in an input |
1764 | file, but the symbol was never referred to by a dynamic | |
1765 | object, or if all references were garbage collected. In | |
1766 | such a case, we don't actually need to build a procedure | |
1767 | linkage table, and we can just do a PC32 reloc instead. */ | |
70256ad8 | 1768 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1769 | h->needs_plt = 0; |
70256ad8 AJ |
1770 | } |
1771 | ||
b34976b6 | 1772 | return TRUE; |
70256ad8 | 1773 | } |
bbd7ec4a | 1774 | else |
c434dee6 AJ |
1775 | /* It's possible that we incorrectly decided a .plt reloc was |
1776 | needed for an R_X86_64_PC32 reloc to a non-function sym in | |
1777 | check_relocs. We can't decide accurately between function and | |
1778 | non-function syms in check-relocs; Objects loaded later in | |
1779 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1780 | h->plt.offset = (bfd_vma) -1; |
70256ad8 AJ |
1781 | |
1782 | /* If this is a weak symbol, and there is a real definition, the | |
1783 | processor independent code will have arranged for us to see the | |
407443a3 | 1784 | real definition first, and we can just use the same value. */ |
f6e332e6 | 1785 | if (h->u.weakdef != NULL) |
70256ad8 | 1786 | { |
f6e332e6 AM |
1787 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1788 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1789 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1790 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
d40d037c | 1791 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 1792 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 1793 | return TRUE; |
70256ad8 AJ |
1794 | } |
1795 | ||
1796 | /* This is a reference to a symbol defined by a dynamic object which | |
407443a3 | 1797 | is not a function. */ |
70256ad8 AJ |
1798 | |
1799 | /* If we are creating a shared library, we must presume that the | |
1800 | only references to the symbol are via the global offset table. | |
1801 | For such cases we need not do anything here; the relocations will | |
407443a3 | 1802 | be handled correctly by relocate_section. */ |
70256ad8 | 1803 | if (info->shared) |
b34976b6 | 1804 | return TRUE; |
70256ad8 AJ |
1805 | |
1806 | /* If there are no references to this symbol that do not use the | |
1807 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1808 | if (!h->non_got_ref) |
b34976b6 | 1809 | return TRUE; |
70256ad8 | 1810 | |
c434dee6 AJ |
1811 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1812 | if (info->nocopyreloc) | |
1813 | { | |
f5385ebf | 1814 | h->non_got_ref = 0; |
b34976b6 | 1815 | return TRUE; |
c434dee6 AJ |
1816 | } |
1817 | ||
d40d037c | 1818 | if (ELIMINATE_COPY_RELOCS) |
c434dee6 | 1819 | { |
d40d037c | 1820 | struct elf64_x86_64_link_hash_entry * eh; |
e03a8ed8 | 1821 | struct elf_dyn_relocs *p; |
c434dee6 | 1822 | |
d40d037c AJ |
1823 | eh = (struct elf64_x86_64_link_hash_entry *) h; |
1824 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1825 | { | |
1826 | s = p->sec->output_section; | |
1827 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1828 | break; | |
1829 | } | |
1830 | ||
1831 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1832 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1833 | if (p == NULL) | |
1834 | { | |
f5385ebf | 1835 | h->non_got_ref = 0; |
d40d037c AJ |
1836 | return TRUE; |
1837 | } | |
c434dee6 AJ |
1838 | } |
1839 | ||
909272ee AM |
1840 | if (h->size == 0) |
1841 | { | |
1842 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1843 | h->root.root.string); | |
1844 | return TRUE; | |
1845 | } | |
1846 | ||
70256ad8 | 1847 | /* We must allocate the symbol in our .dynbss section, which will |
407443a3 | 1848 | become part of the .bss section of the executable. There will be |
70256ad8 AJ |
1849 | an entry for this symbol in the .dynsym section. The dynamic |
1850 | object will contain position independent code, so all references | |
1851 | from the dynamic object to this symbol will go through the global | |
1852 | offset table. The dynamic linker will use the .dynsym entry to | |
1853 | determine the address it must put in the global offset table, so | |
1854 | both the dynamic object and the regular object will refer to the | |
1855 | same memory location for the variable. */ | |
1856 | ||
c434dee6 | 1857 | htab = elf64_x86_64_hash_table (info); |
4dfe6ac6 NC |
1858 | if (htab == NULL) |
1859 | return FALSE; | |
70256ad8 AJ |
1860 | |
1861 | /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker | |
1862 | to copy the initial value out of the dynamic object and into the | |
cedb70c5 | 1863 | runtime process image. */ |
70256ad8 AJ |
1864 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1865 | { | |
eea6121a | 1866 | htab->srelbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 1867 | h->needs_copy = 1; |
70256ad8 AJ |
1868 | } |
1869 | ||
c434dee6 | 1870 | s = htab->sdynbss; |
70256ad8 | 1871 | |
027297b7 | 1872 | return _bfd_elf_adjust_dynamic_copy (h, s); |
70256ad8 AJ |
1873 | } |
1874 | ||
c434dee6 AJ |
1875 | /* Allocate space in .plt, .got and associated reloc sections for |
1876 | dynamic relocs. */ | |
1877 | ||
b34976b6 | 1878 | static bfd_boolean |
eb4ff4d6 | 1879 | elf64_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
c434dee6 AJ |
1880 | { |
1881 | struct bfd_link_info *info; | |
1882 | struct elf64_x86_64_link_hash_table *htab; | |
1883 | struct elf64_x86_64_link_hash_entry *eh; | |
e03a8ed8 | 1884 | struct elf_dyn_relocs *p; |
c434dee6 | 1885 | |
e92d460e | 1886 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1887 | return TRUE; |
c434dee6 | 1888 | |
e92d460e AM |
1889 | if (h->root.type == bfd_link_hash_warning) |
1890 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
cbe950e9 | 1891 | eh = (struct elf64_x86_64_link_hash_entry *) h; |
e92d460e | 1892 | |
c434dee6 AJ |
1893 | info = (struct bfd_link_info *) inf; |
1894 | htab = elf64_x86_64_hash_table (info); | |
4dfe6ac6 NC |
1895 | if (htab == NULL) |
1896 | return FALSE; | |
c434dee6 | 1897 | |
cbe950e9 L |
1898 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
1899 | here if it is defined and referenced in a non-shared object. */ | |
1900 | if (h->type == STT_GNU_IFUNC | |
1901 | && h->def_regular) | |
e03a8ed8 L |
1902 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, |
1903 | &eh->dyn_relocs, | |
1904 | PLT_ENTRY_SIZE, | |
1905 | GOT_ENTRY_SIZE); | |
cbe950e9 L |
1906 | else if (htab->elf.dynamic_sections_created |
1907 | && h->plt.refcount > 0) | |
c434dee6 AJ |
1908 | { |
1909 | /* Make sure this symbol is output as a dynamic symbol. | |
1910 | Undefined weak syms won't yet be marked as dynamic. */ | |
1911 | if (h->dynindx == -1 | |
f5385ebf | 1912 | && !h->forced_local) |
c434dee6 | 1913 | { |
c152c796 | 1914 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1915 | return FALSE; |
c434dee6 AJ |
1916 | } |
1917 | ||
27482721 AJ |
1918 | if (info->shared |
1919 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
c434dee6 | 1920 | { |
6de2ae4a | 1921 | asection *s = htab->elf.splt; |
c434dee6 AJ |
1922 | |
1923 | /* If this is the first .plt entry, make room for the special | |
1924 | first entry. */ | |
eea6121a AM |
1925 | if (s->size == 0) |
1926 | s->size += PLT_ENTRY_SIZE; | |
c434dee6 | 1927 | |
eea6121a | 1928 | h->plt.offset = s->size; |
c434dee6 AJ |
1929 | |
1930 | /* If this symbol is not defined in a regular file, and we are | |
1931 | not generating a shared library, then set the symbol to this | |
1932 | location in the .plt. This is required to make function | |
1933 | pointers compare as equal between the normal executable and | |
1934 | the shared library. */ | |
1935 | if (! info->shared | |
f5385ebf | 1936 | && !h->def_regular) |
c434dee6 AJ |
1937 | { |
1938 | h->root.u.def.section = s; | |
1939 | h->root.u.def.value = h->plt.offset; | |
1940 | } | |
1941 | ||
1942 | /* Make room for this entry. */ | |
eea6121a | 1943 | s->size += PLT_ENTRY_SIZE; |
c434dee6 AJ |
1944 | |
1945 | /* We also need to make an entry in the .got.plt section, which | |
1946 | will be placed in the .got section by the linker script. */ | |
6de2ae4a | 1947 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
c434dee6 AJ |
1948 | |
1949 | /* We also need to make an entry in the .rela.plt section. */ | |
6de2ae4a L |
1950 | htab->elf.srelplt->size += sizeof (Elf64_External_Rela); |
1951 | htab->elf.srelplt->reloc_count++; | |
c434dee6 AJ |
1952 | } |
1953 | else | |
1954 | { | |
1955 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1956 | h->needs_plt = 0; |
c434dee6 AJ |
1957 | } |
1958 | } | |
1959 | else | |
1960 | { | |
1961 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1962 | h->needs_plt = 0; |
c434dee6 AJ |
1963 | } |
1964 | ||
67a4f2b7 AO |
1965 | eh->tlsdesc_got = (bfd_vma) -1; |
1966 | ||
bffbf940 JJ |
1967 | /* If R_X86_64_GOTTPOFF symbol is now local to the binary, |
1968 | make it a R_X86_64_TPOFF32 requiring no GOT entry. */ | |
1969 | if (h->got.refcount > 0 | |
1d85728f | 1970 | && info->executable |
bffbf940 JJ |
1971 | && h->dynindx == -1 |
1972 | && elf64_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE) | |
d8045f23 NC |
1973 | { |
1974 | h->got.offset = (bfd_vma) -1; | |
1975 | } | |
bffbf940 | 1976 | else if (h->got.refcount > 0) |
c434dee6 AJ |
1977 | { |
1978 | asection *s; | |
b34976b6 | 1979 | bfd_boolean dyn; |
bffbf940 | 1980 | int tls_type = elf64_x86_64_hash_entry (h)->tls_type; |
c434dee6 AJ |
1981 | |
1982 | /* Make sure this symbol is output as a dynamic symbol. | |
1983 | Undefined weak syms won't yet be marked as dynamic. */ | |
1984 | if (h->dynindx == -1 | |
f5385ebf | 1985 | && !h->forced_local) |
c434dee6 | 1986 | { |
c152c796 | 1987 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1988 | return FALSE; |
c434dee6 AJ |
1989 | } |
1990 | ||
67a4f2b7 AO |
1991 | if (GOT_TLS_GDESC_P (tls_type)) |
1992 | { | |
6de2ae4a | 1993 | eh->tlsdesc_got = htab->elf.sgotplt->size |
67a4f2b7 | 1994 | - elf64_x86_64_compute_jump_table_size (htab); |
6de2ae4a | 1995 | htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE; |
67a4f2b7 AO |
1996 | h->got.offset = (bfd_vma) -2; |
1997 | } | |
1998 | if (! GOT_TLS_GDESC_P (tls_type) | |
1999 | || GOT_TLS_GD_P (tls_type)) | |
2000 | { | |
6de2ae4a | 2001 | s = htab->elf.sgot; |
67a4f2b7 AO |
2002 | h->got.offset = s->size; |
2003 | s->size += GOT_ENTRY_SIZE; | |
2004 | if (GOT_TLS_GD_P (tls_type)) | |
2005 | s->size += GOT_ENTRY_SIZE; | |
2006 | } | |
c434dee6 | 2007 | dyn = htab->elf.dynamic_sections_created; |
bffbf940 JJ |
2008 | /* R_X86_64_TLSGD needs one dynamic relocation if local symbol |
2009 | and two if global. | |
2010 | R_X86_64_GOTTPOFF needs one dynamic relocation. */ | |
67a4f2b7 | 2011 | if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
bffbf940 | 2012 | || tls_type == GOT_TLS_IE) |
6de2ae4a | 2013 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); |
67a4f2b7 | 2014 | else if (GOT_TLS_GD_P (tls_type)) |
6de2ae4a | 2015 | htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela); |
67a4f2b7 AO |
2016 | else if (! GOT_TLS_GDESC_P (tls_type) |
2017 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2018 | || h->root.type != bfd_link_hash_undefweak) | |
27482721 AJ |
2019 | && (info->shared |
2020 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
6de2ae4a | 2021 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); |
67a4f2b7 AO |
2022 | if (GOT_TLS_GDESC_P (tls_type)) |
2023 | { | |
6de2ae4a | 2024 | htab->elf.srelplt->size += sizeof (Elf64_External_Rela); |
67a4f2b7 AO |
2025 | htab->tlsdesc_plt = (bfd_vma) -1; |
2026 | } | |
c434dee6 AJ |
2027 | } |
2028 | else | |
2029 | h->got.offset = (bfd_vma) -1; | |
2030 | ||
c434dee6 | 2031 | if (eh->dyn_relocs == NULL) |
b34976b6 | 2032 | return TRUE; |
c434dee6 AJ |
2033 | |
2034 | /* In the shared -Bsymbolic case, discard space allocated for | |
2035 | dynamic pc-relative relocs against symbols which turn out to be | |
2036 | defined in regular objects. For the normal shared case, discard | |
2037 | space for pc-relative relocs that have become local due to symbol | |
2038 | visibility changes. */ | |
2039 | ||
2040 | if (info->shared) | |
2041 | { | |
27482721 AJ |
2042 | /* Relocs that use pc_count are those that appear on a call |
2043 | insn, or certain REL relocs that can generated via assembly. | |
2044 | We want calls to protected symbols to resolve directly to the | |
2045 | function rather than going via the plt. If people want | |
2046 | function pointer comparisons to work as expected then they | |
2047 | should avoid writing weird assembly. */ | |
2048 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
c434dee6 | 2049 | { |
e03a8ed8 | 2050 | struct elf_dyn_relocs **pp; |
c434dee6 AJ |
2051 | |
2052 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2053 | { | |
2054 | p->count -= p->pc_count; | |
2055 | p->pc_count = 0; | |
2056 | if (p->count == 0) | |
2057 | *pp = p->next; | |
2058 | else | |
2059 | pp = &p->next; | |
2060 | } | |
2061 | } | |
4e795f50 AM |
2062 | |
2063 | /* Also discard relocs on undefined weak syms with non-default | |
2064 | visibility. */ | |
22d606e9 | 2065 | if (eh->dyn_relocs != NULL |
4e795f50 | 2066 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
2067 | { |
2068 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2069 | eh->dyn_relocs = NULL; | |
2070 | ||
2071 | /* Make sure undefined weak symbols are output as a dynamic | |
2072 | symbol in PIEs. */ | |
2073 | else if (h->dynindx == -1 | |
d8045f23 NC |
2074 | && ! h->forced_local |
2075 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2076 | return FALSE; | |
22d606e9 | 2077 | } |
cbe950e9 | 2078 | |
d8045f23 | 2079 | } |
d40d037c | 2080 | else if (ELIMINATE_COPY_RELOCS) |
c434dee6 AJ |
2081 | { |
2082 | /* For the non-shared case, discard space for relocs against | |
2083 | symbols which turn out to need copy relocs or are not | |
2084 | dynamic. */ | |
2085 | ||
f5385ebf AM |
2086 | if (!h->non_got_ref |
2087 | && ((h->def_dynamic | |
2088 | && !h->def_regular) | |
c434dee6 AJ |
2089 | || (htab->elf.dynamic_sections_created |
2090 | && (h->root.type == bfd_link_hash_undefweak | |
2091 | || h->root.type == bfd_link_hash_undefined)))) | |
2092 | { | |
2093 | /* Make sure this symbol is output as a dynamic symbol. | |
2094 | Undefined weak syms won't yet be marked as dynamic. */ | |
2095 | if (h->dynindx == -1 | |
d8045f23 NC |
2096 | && ! h->forced_local |
2097 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2098 | return FALSE; | |
c434dee6 AJ |
2099 | |
2100 | /* If that succeeded, we know we'll be keeping all the | |
2101 | relocs. */ | |
2102 | if (h->dynindx != -1) | |
2103 | goto keep; | |
2104 | } | |
2105 | ||
2106 | eh->dyn_relocs = NULL; | |
2107 | ||
2108 | keep: ; | |
2109 | } | |
2110 | ||
2111 | /* Finally, allocate space. */ | |
2112 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2113 | { | |
e7c33416 NC |
2114 | asection * sreloc; |
2115 | ||
cbe950e9 | 2116 | sreloc = elf_section_data (p->sec)->sreloc; |
e7c33416 NC |
2117 | |
2118 | BFD_ASSERT (sreloc != NULL); | |
2119 | ||
eea6121a | 2120 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
c434dee6 AJ |
2121 | } |
2122 | ||
b34976b6 | 2123 | return TRUE; |
c434dee6 AJ |
2124 | } |
2125 | ||
c25bc9fc L |
2126 | /* Allocate space in .plt, .got and associated reloc sections for |
2127 | local dynamic relocs. */ | |
2128 | ||
2129 | static bfd_boolean | |
2130 | elf64_x86_64_allocate_local_dynrelocs (void **slot, void *inf) | |
2131 | { | |
2132 | struct elf_link_hash_entry *h | |
2133 | = (struct elf_link_hash_entry *) *slot; | |
2134 | ||
2135 | if (h->type != STT_GNU_IFUNC | |
2136 | || !h->def_regular | |
2137 | || !h->ref_regular | |
2138 | || !h->forced_local | |
2139 | || h->root.type != bfd_link_hash_defined) | |
2140 | abort (); | |
2141 | ||
2142 | return elf64_x86_64_allocate_dynrelocs (h, inf); | |
2143 | } | |
2144 | ||
c434dee6 AJ |
2145 | /* Find any dynamic relocs that apply to read-only sections. */ |
2146 | ||
b34976b6 | 2147 | static bfd_boolean |
eb4ff4d6 | 2148 | elf64_x86_64_readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
c434dee6 AJ |
2149 | { |
2150 | struct elf64_x86_64_link_hash_entry *eh; | |
e03a8ed8 | 2151 | struct elf_dyn_relocs *p; |
c434dee6 | 2152 | |
e92d460e AM |
2153 | if (h->root.type == bfd_link_hash_warning) |
2154 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2155 | ||
c434dee6 AJ |
2156 | eh = (struct elf64_x86_64_link_hash_entry *) h; |
2157 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2158 | { | |
2159 | asection *s = p->sec->output_section; | |
2160 | ||
2161 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2162 | { | |
2163 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2164 | ||
2165 | info->flags |= DF_TEXTREL; | |
2166 | ||
2167 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 2168 | return FALSE; |
c434dee6 AJ |
2169 | } |
2170 | } | |
b34976b6 | 2171 | return TRUE; |
c434dee6 AJ |
2172 | } |
2173 | ||
70256ad8 AJ |
2174 | /* Set the sizes of the dynamic sections. */ |
2175 | ||
b34976b6 | 2176 | static bfd_boolean |
27482721 AJ |
2177 | elf64_x86_64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
2178 | struct bfd_link_info *info) | |
70256ad8 | 2179 | { |
c434dee6 | 2180 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 AJ |
2181 | bfd *dynobj; |
2182 | asection *s; | |
b34976b6 | 2183 | bfd_boolean relocs; |
c434dee6 | 2184 | bfd *ibfd; |
70256ad8 | 2185 | |
c434dee6 | 2186 | htab = elf64_x86_64_hash_table (info); |
4dfe6ac6 NC |
2187 | if (htab == NULL) |
2188 | return FALSE; | |
2189 | ||
c434dee6 AJ |
2190 | dynobj = htab->elf.dynobj; |
2191 | if (dynobj == NULL) | |
2192 | abort (); | |
70256ad8 | 2193 | |
c434dee6 | 2194 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
2195 | { |
2196 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 2197 | if (info->executable) |
70256ad8 AJ |
2198 | { |
2199 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
c434dee6 AJ |
2200 | if (s == NULL) |
2201 | abort (); | |
eea6121a | 2202 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
70256ad8 AJ |
2203 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2204 | } | |
2205 | } | |
70256ad8 | 2206 | |
c434dee6 AJ |
2207 | /* Set up .got offsets for local syms, and space for local dynamic |
2208 | relocs. */ | |
2209 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
70256ad8 | 2210 | { |
c434dee6 AJ |
2211 | bfd_signed_vma *local_got; |
2212 | bfd_signed_vma *end_local_got; | |
bffbf940 | 2213 | char *local_tls_type; |
67a4f2b7 | 2214 | bfd_vma *local_tlsdesc_gotent; |
c434dee6 AJ |
2215 | bfd_size_type locsymcount; |
2216 | Elf_Internal_Shdr *symtab_hdr; | |
2217 | asection *srel; | |
70256ad8 | 2218 | |
0ffa91dd | 2219 | if (! is_x86_64_elf (ibfd)) |
70256ad8 AJ |
2220 | continue; |
2221 | ||
c434dee6 | 2222 | for (s = ibfd->sections; s != NULL; s = s->next) |
70256ad8 | 2223 | { |
e03a8ed8 | 2224 | struct elf_dyn_relocs *p; |
c434dee6 | 2225 | |
e03a8ed8 | 2226 | for (p = (struct elf_dyn_relocs *) |
e81d3500 | 2227 | (elf_section_data (s)->local_dynrel); |
c434dee6 AJ |
2228 | p != NULL; |
2229 | p = p->next) | |
70256ad8 | 2230 | { |
c434dee6 AJ |
2231 | if (!bfd_is_abs_section (p->sec) |
2232 | && bfd_is_abs_section (p->sec->output_section)) | |
2233 | { | |
2234 | /* Input section has been discarded, either because | |
2235 | it is a copy of a linkonce section or due to | |
2236 | linker script /DISCARD/, so we'll be discarding | |
2237 | the relocs too. */ | |
2238 | } | |
2239 | else if (p->count != 0) | |
2240 | { | |
2241 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 2242 | srel->size += p->count * sizeof (Elf64_External_Rela); |
c434dee6 AJ |
2243 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
2244 | info->flags |= DF_TEXTREL; | |
c434dee6 | 2245 | } |
70256ad8 AJ |
2246 | } |
2247 | } | |
c434dee6 AJ |
2248 | |
2249 | local_got = elf_local_got_refcounts (ibfd); | |
2250 | if (!local_got) | |
2251 | continue; | |
2252 | ||
0ffa91dd | 2253 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c434dee6 AJ |
2254 | locsymcount = symtab_hdr->sh_info; |
2255 | end_local_got = local_got + locsymcount; | |
bffbf940 | 2256 | local_tls_type = elf64_x86_64_local_got_tls_type (ibfd); |
67a4f2b7 | 2257 | local_tlsdesc_gotent = elf64_x86_64_local_tlsdesc_gotent (ibfd); |
6de2ae4a L |
2258 | s = htab->elf.sgot; |
2259 | srel = htab->elf.srelgot; | |
67a4f2b7 AO |
2260 | for (; local_got < end_local_got; |
2261 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
70256ad8 | 2262 | { |
67a4f2b7 | 2263 | *local_tlsdesc_gotent = (bfd_vma) -1; |
c434dee6 | 2264 | if (*local_got > 0) |
70256ad8 | 2265 | { |
67a4f2b7 AO |
2266 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2267 | { | |
6de2ae4a | 2268 | *local_tlsdesc_gotent = htab->elf.sgotplt->size |
67a4f2b7 | 2269 | - elf64_x86_64_compute_jump_table_size (htab); |
6de2ae4a | 2270 | htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE; |
67a4f2b7 AO |
2271 | *local_got = (bfd_vma) -2; |
2272 | } | |
2273 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2274 | || GOT_TLS_GD_P (*local_tls_type)) | |
2275 | { | |
2276 | *local_got = s->size; | |
2277 | s->size += GOT_ENTRY_SIZE; | |
2278 | if (GOT_TLS_GD_P (*local_tls_type)) | |
2279 | s->size += GOT_ENTRY_SIZE; | |
2280 | } | |
bffbf940 | 2281 | if (info->shared |
67a4f2b7 | 2282 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
bffbf940 | 2283 | || *local_tls_type == GOT_TLS_IE) |
67a4f2b7 AO |
2284 | { |
2285 | if (GOT_TLS_GDESC_P (*local_tls_type)) | |
2286 | { | |
6de2ae4a L |
2287 | htab->elf.srelplt->size |
2288 | += sizeof (Elf64_External_Rela); | |
67a4f2b7 AO |
2289 | htab->tlsdesc_plt = (bfd_vma) -1; |
2290 | } | |
2291 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2292 | || GOT_TLS_GD_P (*local_tls_type)) | |
2293 | srel->size += sizeof (Elf64_External_Rela); | |
2294 | } | |
70256ad8 AJ |
2295 | } |
2296 | else | |
c434dee6 AJ |
2297 | *local_got = (bfd_vma) -1; |
2298 | } | |
2299 | } | |
70256ad8 | 2300 | |
bffbf940 JJ |
2301 | if (htab->tls_ld_got.refcount > 0) |
2302 | { | |
2303 | /* Allocate 2 got entries and 1 dynamic reloc for R_X86_64_TLSLD | |
2304 | relocs. */ | |
6de2ae4a L |
2305 | htab->tls_ld_got.offset = htab->elf.sgot->size; |
2306 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
2307 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); | |
bffbf940 JJ |
2308 | } |
2309 | else | |
2310 | htab->tls_ld_got.offset = -1; | |
2311 | ||
c434dee6 AJ |
2312 | /* Allocate global sym .plt and .got entries, and space for global |
2313 | sym dynamic relocs. */ | |
eb4ff4d6 L |
2314 | elf_link_hash_traverse (&htab->elf, elf64_x86_64_allocate_dynrelocs, |
2315 | info); | |
c434dee6 | 2316 | |
c25bc9fc L |
2317 | /* Allocate .plt and .got entries, and space for local symbols. */ |
2318 | htab_traverse (htab->loc_hash_table, | |
2319 | elf64_x86_64_allocate_local_dynrelocs, | |
2320 | info); | |
2321 | ||
67a4f2b7 AO |
2322 | /* For every jump slot reserved in the sgotplt, reloc_count is |
2323 | incremented. However, when we reserve space for TLS descriptors, | |
2324 | it's not incremented, so in order to compute the space reserved | |
2325 | for them, it suffices to multiply the reloc count by the jump | |
2326 | slot size. */ | |
6de2ae4a | 2327 | if (htab->elf.srelplt) |
67a4f2b7 AO |
2328 | htab->sgotplt_jump_table_size |
2329 | = elf64_x86_64_compute_jump_table_size (htab); | |
2330 | ||
2331 | if (htab->tlsdesc_plt) | |
2332 | { | |
2333 | /* If we're not using lazy TLS relocations, don't generate the | |
2334 | PLT and GOT entries they require. */ | |
2335 | if ((info->flags & DF_BIND_NOW)) | |
2336 | htab->tlsdesc_plt = 0; | |
2337 | else | |
2338 | { | |
6de2ae4a L |
2339 | htab->tlsdesc_got = htab->elf.sgot->size; |
2340 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
67a4f2b7 AO |
2341 | /* Reserve room for the initial entry. |
2342 | FIXME: we could probably do away with it in this case. */ | |
6de2ae4a L |
2343 | if (htab->elf.splt->size == 0) |
2344 | htab->elf.splt->size += PLT_ENTRY_SIZE; | |
2345 | htab->tlsdesc_plt = htab->elf.splt->size; | |
2346 | htab->elf.splt->size += PLT_ENTRY_SIZE; | |
67a4f2b7 AO |
2347 | } |
2348 | } | |
2349 | ||
c434dee6 AJ |
2350 | /* We now have determined the sizes of the various dynamic sections. |
2351 | Allocate memory for them. */ | |
b34976b6 | 2352 | relocs = FALSE; |
c434dee6 AJ |
2353 | for (s = dynobj->sections; s != NULL; s = s->next) |
2354 | { | |
2355 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2356 | continue; | |
2357 | ||
6de2ae4a L |
2358 | if (s == htab->elf.splt |
2359 | || s == htab->elf.sgot | |
2360 | || s == htab->elf.sgotplt | |
2361 | || s == htab->elf.iplt | |
2362 | || s == htab->elf.igotplt | |
75ff4589 | 2363 | || s == htab->sdynbss) |
c434dee6 AJ |
2364 | { |
2365 | /* Strip this section if we don't need it; see the | |
2366 | comment below. */ | |
2367 | } | |
0112cd26 | 2368 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
c434dee6 | 2369 | { |
6de2ae4a | 2370 | if (s->size != 0 && s != htab->elf.srelplt) |
b34976b6 | 2371 | relocs = TRUE; |
c434dee6 AJ |
2372 | |
2373 | /* We use the reloc_count field as a counter if we need | |
2374 | to copy relocs into the output file. */ | |
6de2ae4a | 2375 | if (s != htab->elf.srelplt) |
67a4f2b7 | 2376 | s->reloc_count = 0; |
70256ad8 | 2377 | } |
c434dee6 | 2378 | else |
70256ad8 AJ |
2379 | { |
2380 | /* It's not one of our sections, so don't allocate space. */ | |
2381 | continue; | |
2382 | } | |
2383 | ||
eea6121a | 2384 | if (s->size == 0) |
70256ad8 | 2385 | { |
c434dee6 AJ |
2386 | /* If we don't need this section, strip it from the |
2387 | output file. This is mostly to handle .rela.bss and | |
2388 | .rela.plt. We must create both sections in | |
2389 | create_dynamic_sections, because they must be created | |
2390 | before the linker maps input sections to output | |
2391 | sections. The linker does that before | |
2392 | adjust_dynamic_symbol is called, and it is that | |
2393 | function which decides whether anything needs to go | |
2394 | into these sections. */ | |
2395 | ||
8423293d | 2396 | s->flags |= SEC_EXCLUDE; |
70256ad8 AJ |
2397 | continue; |
2398 | } | |
2399 | ||
c456f082 AM |
2400 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2401 | continue; | |
2402 | ||
70256ad8 AJ |
2403 | /* Allocate memory for the section contents. We use bfd_zalloc |
2404 | here in case unused entries are not reclaimed before the | |
2405 | section's contents are written out. This should not happen, | |
2406 | but this way if it does, we get a R_X86_64_NONE reloc instead | |
2407 | of garbage. */ | |
eea6121a | 2408 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c434dee6 | 2409 | if (s->contents == NULL) |
b34976b6 | 2410 | return FALSE; |
70256ad8 AJ |
2411 | } |
2412 | ||
c434dee6 | 2413 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
2414 | { |
2415 | /* Add some entries to the .dynamic section. We fill in the | |
2416 | values later, in elf64_x86_64_finish_dynamic_sections, but we | |
2417 | must add the entries now so that we get the correct size for | |
407443a3 | 2418 | the .dynamic section. The DT_DEBUG entry is filled in by the |
70256ad8 | 2419 | dynamic linker and used by the debugger. */ |
dc810e39 | 2420 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2421 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2422 | |
36af4a4e | 2423 | if (info->executable) |
70256ad8 | 2424 | { |
dc810e39 | 2425 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2426 | return FALSE; |
70256ad8 AJ |
2427 | } |
2428 | ||
6de2ae4a | 2429 | if (htab->elf.splt->size != 0) |
70256ad8 | 2430 | { |
dc810e39 AM |
2431 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2432 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2433 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2434 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2435 | return FALSE; |
67a4f2b7 AO |
2436 | |
2437 | if (htab->tlsdesc_plt | |
2438 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
2439 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
2440 | return FALSE; | |
70256ad8 AJ |
2441 | } |
2442 | ||
2443 | if (relocs) | |
2444 | { | |
dc810e39 AM |
2445 | if (!add_dynamic_entry (DT_RELA, 0) |
2446 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2447 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 2448 | return FALSE; |
70256ad8 | 2449 | |
c434dee6 AJ |
2450 | /* If any dynamic relocs apply to a read-only section, |
2451 | then we need a DT_TEXTREL entry. */ | |
2452 | if ((info->flags & DF_TEXTREL) == 0) | |
eb4ff4d6 L |
2453 | elf_link_hash_traverse (&htab->elf, |
2454 | elf64_x86_64_readonly_dynrelocs, | |
2455 | info); | |
c434dee6 AJ |
2456 | |
2457 | if ((info->flags & DF_TEXTREL) != 0) | |
2458 | { | |
2459 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2460 | return FALSE; |
c434dee6 | 2461 | } |
70256ad8 AJ |
2462 | } |
2463 | } | |
dc810e39 | 2464 | #undef add_dynamic_entry |
70256ad8 | 2465 | |
b34976b6 | 2466 | return TRUE; |
70256ad8 AJ |
2467 | } |
2468 | ||
67a4f2b7 AO |
2469 | static bfd_boolean |
2470 | elf64_x86_64_always_size_sections (bfd *output_bfd, | |
2471 | struct bfd_link_info *info) | |
2472 | { | |
2473 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
2474 | ||
2475 | if (tls_sec) | |
2476 | { | |
2477 | struct elf_link_hash_entry *tlsbase; | |
2478 | ||
2479 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
2480 | "_TLS_MODULE_BASE_", | |
2481 | FALSE, FALSE, FALSE); | |
2482 | ||
2483 | if (tlsbase && tlsbase->type == STT_TLS) | |
2484 | { | |
4dfe6ac6 | 2485 | struct elf64_x86_64_link_hash_table *htab; |
67a4f2b7 AO |
2486 | struct bfd_link_hash_entry *bh = NULL; |
2487 | const struct elf_backend_data *bed | |
2488 | = get_elf_backend_data (output_bfd); | |
2489 | ||
4dfe6ac6 NC |
2490 | htab = elf64_x86_64_hash_table (info); |
2491 | if (htab == NULL) | |
2492 | return FALSE; | |
2493 | ||
67a4f2b7 AO |
2494 | if (!(_bfd_generic_link_add_one_symbol |
2495 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
2496 | tls_sec, 0, NULL, FALSE, | |
2497 | bed->collect, &bh))) | |
2498 | return FALSE; | |
9f03412a | 2499 | |
4dfe6ac6 | 2500 | htab->tls_module_base = bh; |
9f03412a | 2501 | |
67a4f2b7 AO |
2502 | tlsbase = (struct elf_link_hash_entry *)bh; |
2503 | tlsbase->def_regular = 1; | |
2504 | tlsbase->other = STV_HIDDEN; | |
2505 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
2506 | } | |
2507 | } | |
2508 | ||
2509 | return TRUE; | |
2510 | } | |
2511 | ||
9f03412a AO |
2512 | /* _TLS_MODULE_BASE_ needs to be treated especially when linking |
2513 | executables. Rather than setting it to the beginning of the TLS | |
2514 | section, we have to set it to the end. This function may be called | |
2515 | multiple times, it is idempotent. */ | |
2516 | ||
2517 | static void | |
eb4ff4d6 | 2518 | elf64_x86_64_set_tls_module_base (struct bfd_link_info *info) |
9f03412a | 2519 | { |
4dfe6ac6 | 2520 | struct elf64_x86_64_link_hash_table *htab; |
9f03412a AO |
2521 | struct bfd_link_hash_entry *base; |
2522 | ||
2523 | if (!info->executable) | |
2524 | return; | |
2525 | ||
4dfe6ac6 NC |
2526 | htab = elf64_x86_64_hash_table (info); |
2527 | if (htab == NULL) | |
2528 | return; | |
9f03412a | 2529 | |
4dfe6ac6 NC |
2530 | base = htab->tls_module_base; |
2531 | if (base == NULL) | |
9f03412a AO |
2532 | return; |
2533 | ||
4dfe6ac6 | 2534 | base->u.def.value = htab->elf.tls_size; |
9f03412a AO |
2535 | } |
2536 | ||
bffbf940 JJ |
2537 | /* Return the base VMA address which should be subtracted from real addresses |
2538 | when resolving @dtpoff relocation. | |
2539 | This is PT_TLS segment p_vaddr. */ | |
2540 | ||
2541 | static bfd_vma | |
eb4ff4d6 | 2542 | elf64_x86_64_dtpoff_base (struct bfd_link_info *info) |
bffbf940 | 2543 | { |
e1918d23 AM |
2544 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2545 | if (elf_hash_table (info)->tls_sec == NULL) | |
bffbf940 | 2546 | return 0; |
e1918d23 | 2547 | return elf_hash_table (info)->tls_sec->vma; |
bffbf940 JJ |
2548 | } |
2549 | ||
2550 | /* Return the relocation value for @tpoff relocation | |
2551 | if STT_TLS virtual address is ADDRESS. */ | |
2552 | ||
2553 | static bfd_vma | |
eb4ff4d6 | 2554 | elf64_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address) |
bffbf940 | 2555 | { |
e1918d23 | 2556 | struct elf_link_hash_table *htab = elf_hash_table (info); |
bffbf940 JJ |
2557 | |
2558 | /* If tls_segment is NULL, we should have signalled an error already. */ | |
e1918d23 | 2559 | if (htab->tls_sec == NULL) |
bffbf940 | 2560 | return 0; |
e1918d23 | 2561 | return address - htab->tls_size - htab->tls_sec->vma; |
bffbf940 JJ |
2562 | } |
2563 | ||
90f487df L |
2564 | /* Is the instruction before OFFSET in CONTENTS a 32bit relative |
2565 | branch? */ | |
2566 | ||
2567 | static bfd_boolean | |
2568 | is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset) | |
2569 | { | |
2570 | /* Opcode Instruction | |
2571 | 0xe8 call | |
2572 | 0xe9 jump | |
2573 | 0x0f 0x8x conditional jump */ | |
2574 | return ((offset > 0 | |
2575 | && (contents [offset - 1] == 0xe8 | |
2576 | || contents [offset - 1] == 0xe9)) | |
2577 | || (offset > 1 | |
2578 | && contents [offset - 2] == 0x0f | |
2579 | && (contents [offset - 1] & 0xf0) == 0x80)); | |
2580 | } | |
2581 | ||
464d3bd4 L |
2582 | static void |
2583 | elf64_x86_64_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel) | |
2584 | { | |
2585 | bfd_byte *loc = s->contents; | |
2586 | loc += s->reloc_count++ * sizeof (Elf64_External_Rela); | |
2587 | BFD_ASSERT (loc + sizeof (Elf64_External_Rela) | |
2588 | <= s->contents + s->size); | |
2589 | bfd_elf64_swap_reloca_out (abfd, rel, loc); | |
2590 | } | |
2591 | ||
8d88c4ca NC |
2592 | /* Relocate an x86_64 ELF section. */ |
2593 | ||
b34976b6 | 2594 | static bfd_boolean |
27482721 AJ |
2595 | elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
2596 | bfd *input_bfd, asection *input_section, | |
2597 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
2598 | Elf_Internal_Sym *local_syms, | |
2599 | asection **local_sections) | |
8d88c4ca | 2600 | { |
c434dee6 | 2601 | struct elf64_x86_64_link_hash_table *htab; |
8d88c4ca NC |
2602 | Elf_Internal_Shdr *symtab_hdr; |
2603 | struct elf_link_hash_entry **sym_hashes; | |
2604 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 2605 | bfd_vma *local_tlsdesc_gotents; |
c434dee6 | 2606 | Elf_Internal_Rela *rel; |
8d88c4ca NC |
2607 | Elf_Internal_Rela *relend; |
2608 | ||
0ffa91dd NC |
2609 | BFD_ASSERT (is_x86_64_elf (input_bfd)); |
2610 | ||
c434dee6 | 2611 | htab = elf64_x86_64_hash_table (info); |
4dfe6ac6 NC |
2612 | if (htab == NULL) |
2613 | return FALSE; | |
0ffa91dd | 2614 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
8d88c4ca NC |
2615 | sym_hashes = elf_sym_hashes (input_bfd); |
2616 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
67a4f2b7 | 2617 | local_tlsdesc_gotents = elf64_x86_64_local_tlsdesc_gotent (input_bfd); |
8d88c4ca | 2618 | |
eb4ff4d6 | 2619 | elf64_x86_64_set_tls_module_base (info); |
9f03412a | 2620 | |
c434dee6 | 2621 | rel = relocs; |
8d88c4ca | 2622 | relend = relocs + input_section->reloc_count; |
c434dee6 | 2623 | for (; rel < relend; rel++) |
8d88c4ca | 2624 | { |
bffbf940 | 2625 | unsigned int r_type; |
8d88c4ca NC |
2626 | reloc_howto_type *howto; |
2627 | unsigned long r_symndx; | |
2628 | struct elf_link_hash_entry *h; | |
2629 | Elf_Internal_Sym *sym; | |
2630 | asection *sec; | |
67a4f2b7 | 2631 | bfd_vma off, offplt; |
8d88c4ca | 2632 | bfd_vma relocation; |
b34976b6 | 2633 | bfd_boolean unresolved_reloc; |
8d88c4ca | 2634 | bfd_reloc_status_type r; |
bffbf940 | 2635 | int tls_type; |
cbe950e9 | 2636 | asection *base_got; |
8d88c4ca | 2637 | |
c434dee6 | 2638 | r_type = ELF64_R_TYPE (rel->r_info); |
fe4770f4 AJ |
2639 | if (r_type == (int) R_X86_64_GNU_VTINHERIT |
2640 | || r_type == (int) R_X86_64_GNU_VTENTRY) | |
2641 | continue; | |
8d88c4ca | 2642 | |
bffbf940 | 2643 | if (r_type >= R_X86_64_max) |
8da6118f KH |
2644 | { |
2645 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2646 | return FALSE; |
8da6118f | 2647 | } |
8d88c4ca | 2648 | |
b491616a | 2649 | howto = x86_64_elf_howto_table + r_type; |
c434dee6 | 2650 | r_symndx = ELF64_R_SYM (rel->r_info); |
8d88c4ca NC |
2651 | h = NULL; |
2652 | sym = NULL; | |
2653 | sec = NULL; | |
b34976b6 | 2654 | unresolved_reloc = FALSE; |
8d88c4ca | 2655 | if (r_symndx < symtab_hdr->sh_info) |
8da6118f KH |
2656 | { |
2657 | sym = local_syms + r_symndx; | |
2658 | sec = local_sections[r_symndx]; | |
c434dee6 | 2659 | |
c25bc9fc L |
2660 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, |
2661 | &sec, rel); | |
2662 | ||
2663 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
1f85278f L |
2664 | if (!info->relocatable |
2665 | && ELF64_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
c25bc9fc L |
2666 | { |
2667 | h = elf64_x86_64_get_local_sym_hash (htab, input_bfd, | |
2668 | rel, FALSE); | |
2669 | if (h == NULL) | |
2670 | abort (); | |
2671 | ||
2672 | /* Set STT_GNU_IFUNC symbol value. */ | |
2673 | h->root.u.def.value = sym->st_value; | |
2674 | h->root.u.def.section = sec; | |
2675 | } | |
8da6118f | 2676 | } |
8d88c4ca | 2677 | else |
8da6118f | 2678 | { |
c9736ba0 | 2679 | bfd_boolean warned ATTRIBUTE_UNUSED; |
c434dee6 | 2680 | |
b2a8e766 AM |
2681 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2682 | r_symndx, symtab_hdr, sym_hashes, | |
2683 | h, sec, relocation, | |
2684 | unresolved_reloc, warned); | |
8da6118f | 2685 | } |
ab96bf03 AM |
2686 | |
2687 | if (sec != NULL && elf_discarded_section (sec)) | |
0672748a L |
2688 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
2689 | rel, relend, howto, contents); | |
ab96bf03 AM |
2690 | |
2691 | if (info->relocatable) | |
2692 | continue; | |
2693 | ||
cbe950e9 L |
2694 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
2695 | it here if it is defined in a non-shared object. */ | |
2696 | if (h != NULL | |
2697 | && h->type == STT_GNU_IFUNC | |
2698 | && h->def_regular) | |
2699 | { | |
2700 | asection *plt; | |
2701 | bfd_vma plt_index; | |
4c544807 | 2702 | const char *name; |
cbe950e9 L |
2703 | |
2704 | if ((input_section->flags & SEC_ALLOC) == 0 | |
2705 | || h->plt.offset == (bfd_vma) -1) | |
2706 | abort (); | |
2707 | ||
2708 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
6de2ae4a | 2709 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
cbe950e9 L |
2710 | relocation = (plt->output_section->vma |
2711 | + plt->output_offset + h->plt.offset); | |
2712 | ||
2713 | switch (r_type) | |
2714 | { | |
2715 | default: | |
4c544807 L |
2716 | if (h->root.root.string) |
2717 | name = h->root.root.string; | |
2718 | else | |
2719 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
2720 | NULL); | |
cbe950e9 L |
2721 | (*_bfd_error_handler) |
2722 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
2723 | "symbol `%s' isn't handled by %s"), input_bfd, | |
2724 | x86_64_elf_howto_table[r_type].name, | |
4c544807 | 2725 | name, __FUNCTION__); |
cbe950e9 L |
2726 | bfd_set_error (bfd_error_bad_value); |
2727 | return FALSE; | |
2728 | ||
2729 | case R_X86_64_32S: | |
710ab287 | 2730 | if (info->shared) |
cbe950e9 | 2731 | abort (); |
710ab287 L |
2732 | goto do_relocation; |
2733 | ||
2734 | case R_X86_64_64: | |
2735 | if (rel->r_addend != 0) | |
2736 | { | |
4c544807 L |
2737 | if (h->root.root.string) |
2738 | name = h->root.root.string; | |
2739 | else | |
2740 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
2741 | sym, NULL); | |
710ab287 L |
2742 | (*_bfd_error_handler) |
2743 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
2744 | "symbol `%s' has non-zero addend: %d"), | |
2745 | input_bfd, x86_64_elf_howto_table[r_type].name, | |
4c544807 | 2746 | name, rel->r_addend); |
710ab287 L |
2747 | bfd_set_error (bfd_error_bad_value); |
2748 | return FALSE; | |
2749 | } | |
2750 | ||
2751 | /* Generate dynamic relcoation only when there is a | |
2752 | non-GOF reference in a shared object. */ | |
2753 | if (info->shared && h->non_got_ref) | |
2754 | { | |
2755 | Elf_Internal_Rela outrel; | |
710ab287 L |
2756 | asection *sreloc; |
2757 | ||
c25bc9fc L |
2758 | /* Need a dynamic relocation to get the real function |
2759 | address. */ | |
710ab287 L |
2760 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, |
2761 | info, | |
2762 | input_section, | |
2763 | rel->r_offset); | |
2764 | if (outrel.r_offset == (bfd_vma) -1 | |
2765 | || outrel.r_offset == (bfd_vma) -2) | |
2766 | abort (); | |
2767 | ||
2768 | outrel.r_offset += (input_section->output_section->vma | |
2769 | + input_section->output_offset); | |
2770 | ||
2771 | if (h->dynindx == -1 | |
44c4ea11 L |
2772 | || h->forced_local |
2773 | || info->executable) | |
710ab287 L |
2774 | { |
2775 | /* This symbol is resolved locally. */ | |
2776 | outrel.r_info = ELF64_R_INFO (0, R_X86_64_IRELATIVE); | |
2777 | outrel.r_addend = (h->root.u.def.value | |
2778 | + h->root.u.def.section->output_section->vma | |
2779 | + h->root.u.def.section->output_offset); | |
2780 | } | |
2781 | else | |
2782 | { | |
2783 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
2784 | outrel.r_addend = 0; | |
2785 | } | |
2786 | ||
6de2ae4a | 2787 | sreloc = htab->elf.irelifunc; |
464d3bd4 | 2788 | elf64_x86_64_append_rela (output_bfd, sreloc, &outrel); |
710ab287 L |
2789 | |
2790 | /* If this reloc is against an external symbol, we | |
2791 | do not want to fiddle with the addend. Otherwise, | |
2792 | we need to include the symbol value so that it | |
2793 | becomes an addend for the dynamic reloc. For an | |
2794 | internal symbol, we have updated addend. */ | |
2795 | continue; | |
2796 | } | |
cbe950e9 L |
2797 | |
2798 | case R_X86_64_32: | |
cbe950e9 L |
2799 | case R_X86_64_PC32: |
2800 | case R_X86_64_PC64: | |
2801 | case R_X86_64_PLT32: | |
2802 | goto do_relocation; | |
2803 | ||
2804 | case R_X86_64_GOTPCREL: | |
2805 | case R_X86_64_GOTPCREL64: | |
6de2ae4a | 2806 | base_got = htab->elf.sgot; |
cbe950e9 L |
2807 | off = h->got.offset; |
2808 | ||
7afd84dc | 2809 | if (base_got == NULL) |
cbe950e9 L |
2810 | abort (); |
2811 | ||
7afd84dc | 2812 | if (off == (bfd_vma) -1) |
cbe950e9 | 2813 | { |
7afd84dc L |
2814 | /* We can't use h->got.offset here to save state, or |
2815 | even just remember the offset, as finish_dynamic_symbol | |
2816 | would use that as offset into .got. */ | |
cbe950e9 | 2817 | |
6de2ae4a | 2818 | if (htab->elf.splt != NULL) |
7afd84dc L |
2819 | { |
2820 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
2821 | off = (plt_index + 3) * GOT_ENTRY_SIZE; | |
6de2ae4a | 2822 | base_got = htab->elf.sgotplt; |
7afd84dc | 2823 | } |
cbe950e9 L |
2824 | else |
2825 | { | |
7afd84dc L |
2826 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; |
2827 | off = plt_index * GOT_ENTRY_SIZE; | |
6de2ae4a | 2828 | base_got = htab->elf.igotplt; |
7afd84dc L |
2829 | } |
2830 | ||
2831 | if (h->dynindx == -1 | |
2832 | || h->forced_local | |
2833 | || info->symbolic) | |
2834 | { | |
2835 | /* This references the local defitionion. We must | |
2836 | initialize this entry in the global offset table. | |
2837 | Since the offset must always be a multiple of 8, | |
2838 | we use the least significant bit to record | |
2839 | whether we have initialized it already. | |
2840 | ||
2841 | When doing a dynamic link, we create a .rela.got | |
2842 | relocation entry to initialize the value. This | |
2843 | is done in the finish_dynamic_symbol routine. */ | |
2844 | if ((off & 1) != 0) | |
2845 | off &= ~1; | |
2846 | else | |
2847 | { | |
2848 | bfd_put_64 (output_bfd, relocation, | |
2849 | base_got->contents + off); | |
2850 | /* Note that this is harmless for the GOTPLT64 | |
2851 | case, as -1 | 1 still is -1. */ | |
2852 | h->got.offset |= 1; | |
2853 | } | |
cbe950e9 L |
2854 | } |
2855 | } | |
2856 | ||
2857 | relocation = (base_got->output_section->vma | |
2858 | + base_got->output_offset + off); | |
2859 | ||
2860 | if (r_type != R_X86_64_GOTPCREL | |
2861 | && r_type != R_X86_64_GOTPCREL64) | |
2862 | { | |
2863 | asection *gotplt; | |
6de2ae4a L |
2864 | if (htab->elf.splt != NULL) |
2865 | gotplt = htab->elf.sgotplt; | |
cbe950e9 | 2866 | else |
6de2ae4a | 2867 | gotplt = htab->elf.igotplt; |
cbe950e9 L |
2868 | relocation -= (gotplt->output_section->vma |
2869 | - gotplt->output_offset); | |
2870 | } | |
2871 | ||
2872 | goto do_relocation; | |
2873 | } | |
2874 | } | |
2875 | ||
70256ad8 AJ |
2876 | /* When generating a shared object, the relocations handled here are |
2877 | copied into the output file to be resolved at run time. */ | |
2878 | switch (r_type) | |
2879 | { | |
2880 | case R_X86_64_GOT32: | |
7b81dfbb | 2881 | case R_X86_64_GOT64: |
70256ad8 AJ |
2882 | /* Relocation is to the entry for this symbol in the global |
2883 | offset table. */ | |
70256ad8 | 2884 | case R_X86_64_GOTPCREL: |
7b81dfbb AJ |
2885 | case R_X86_64_GOTPCREL64: |
2886 | /* Use global offset table entry as symbol value. */ | |
2887 | case R_X86_64_GOTPLT64: | |
2888 | /* This is the same as GOT64 for relocation purposes, but | |
2889 | indicates the existence of a PLT entry. The difficulty is, | |
2890 | that we must calculate the GOT slot offset from the PLT | |
2891 | offset, if this symbol got a PLT entry (it was global). | |
2892 | Additionally if it's computed from the PLT entry, then that | |
2893 | GOT offset is relative to .got.plt, not to .got. */ | |
6de2ae4a | 2894 | base_got = htab->elf.sgot; |
7b81dfbb | 2895 | |
6de2ae4a | 2896 | if (htab->elf.sgot == NULL) |
c434dee6 | 2897 | abort (); |
053579d7 | 2898 | |
51e0a107 | 2899 | if (h != NULL) |
70256ad8 | 2900 | { |
b34976b6 | 2901 | bfd_boolean dyn; |
c434dee6 AJ |
2902 | |
2903 | off = h->got.offset; | |
7b81dfbb AJ |
2904 | if (h->needs_plt |
2905 | && h->plt.offset != (bfd_vma)-1 | |
2906 | && off == (bfd_vma)-1) | |
2907 | { | |
2908 | /* We can't use h->got.offset here to save | |
2909 | state, or even just remember the offset, as | |
2910 | finish_dynamic_symbol would use that as offset into | |
2911 | .got. */ | |
2912 | bfd_vma plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
2913 | off = (plt_index + 3) * GOT_ENTRY_SIZE; | |
6de2ae4a | 2914 | base_got = htab->elf.sgotplt; |
7b81dfbb AJ |
2915 | } |
2916 | ||
c434dee6 | 2917 | dyn = htab->elf.dynamic_sections_created; |
51e0a107 | 2918 | |
27482721 | 2919 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
51e0a107 | 2920 | || (info->shared |
27482721 | 2921 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4bc6e03a AJ |
2922 | || (ELF_ST_VISIBILITY (h->other) |
2923 | && h->root.type == bfd_link_hash_undefweak)) | |
51e0a107 JH |
2924 | { |
2925 | /* This is actually a static link, or it is a -Bsymbolic | |
2926 | link and the symbol is defined locally, or the symbol | |
407443a3 | 2927 | was forced to be local because of a version file. We |
51e0a107 JH |
2928 | must initialize this entry in the global offset table. |
2929 | Since the offset must always be a multiple of 8, we | |
2930 | use the least significant bit to record whether we | |
2931 | have initialized it already. | |
2932 | ||
2933 | When doing a dynamic link, we create a .rela.got | |
407443a3 AJ |
2934 | relocation entry to initialize the value. This is |
2935 | done in the finish_dynamic_symbol routine. */ | |
51e0a107 JH |
2936 | if ((off & 1) != 0) |
2937 | off &= ~1; | |
2938 | else | |
2939 | { | |
2940 | bfd_put_64 (output_bfd, relocation, | |
7b81dfbb AJ |
2941 | base_got->contents + off); |
2942 | /* Note that this is harmless for the GOTPLT64 case, | |
2943 | as -1 | 1 still is -1. */ | |
51e0a107 JH |
2944 | h->got.offset |= 1; |
2945 | } | |
2946 | } | |
053579d7 | 2947 | else |
b34976b6 | 2948 | unresolved_reloc = FALSE; |
70256ad8 | 2949 | } |
51e0a107 JH |
2950 | else |
2951 | { | |
c434dee6 AJ |
2952 | if (local_got_offsets == NULL) |
2953 | abort (); | |
51e0a107 JH |
2954 | |
2955 | off = local_got_offsets[r_symndx]; | |
2956 | ||
2957 | /* The offset must always be a multiple of 8. We use | |
407443a3 AJ |
2958 | the least significant bit to record whether we have |
2959 | already generated the necessary reloc. */ | |
51e0a107 JH |
2960 | if ((off & 1) != 0) |
2961 | off &= ~1; | |
2962 | else | |
2963 | { | |
c434dee6 | 2964 | bfd_put_64 (output_bfd, relocation, |
7b81dfbb | 2965 | base_got->contents + off); |
51e0a107 JH |
2966 | |
2967 | if (info->shared) | |
2968 | { | |
947216bf | 2969 | asection *s; |
51e0a107 | 2970 | Elf_Internal_Rela outrel; |
70256ad8 | 2971 | |
51e0a107 JH |
2972 | /* We need to generate a R_X86_64_RELATIVE reloc |
2973 | for the dynamic linker. */ | |
6de2ae4a | 2974 | s = htab->elf.srelgot; |
947216bf | 2975 | if (s == NULL) |
c434dee6 | 2976 | abort (); |
51e0a107 | 2977 | |
7b81dfbb AJ |
2978 | outrel.r_offset = (base_got->output_section->vma |
2979 | + base_got->output_offset | |
51e0a107 JH |
2980 | + off); |
2981 | outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE); | |
2982 | outrel.r_addend = relocation; | |
464d3bd4 | 2983 | elf64_x86_64_append_rela (output_bfd, s, &outrel); |
51e0a107 JH |
2984 | } |
2985 | ||
2986 | local_got_offsets[r_symndx] |= 1; | |
2987 | } | |
51e0a107 | 2988 | } |
6a2bda3f | 2989 | |
c434dee6 AJ |
2990 | if (off >= (bfd_vma) -2) |
2991 | abort (); | |
2992 | ||
7b81dfbb AJ |
2993 | relocation = base_got->output_section->vma |
2994 | + base_got->output_offset + off; | |
2995 | if (r_type != R_X86_64_GOTPCREL && r_type != R_X86_64_GOTPCREL64) | |
6de2ae4a L |
2996 | relocation -= htab->elf.sgotplt->output_section->vma |
2997 | - htab->elf.sgotplt->output_offset; | |
c434dee6 | 2998 | |
70256ad8 AJ |
2999 | break; |
3000 | ||
d6ab8113 JB |
3001 | case R_X86_64_GOTOFF64: |
3002 | /* Relocation is relative to the start of the global offset | |
3003 | table. */ | |
3004 | ||
3005 | /* Check to make sure it isn't a protected function symbol | |
3006 | for shared library since it may not be local when used | |
3007 | as function address. */ | |
3008 | if (info->shared | |
3009 | && h | |
3010 | && h->def_regular | |
3011 | && h->type == STT_FUNC | |
3012 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
3013 | { | |
3014 | (*_bfd_error_handler) | |
3015 | (_("%B: relocation R_X86_64_GOTOFF64 against protected function `%s' can not be used when making a shared object"), | |
3016 | input_bfd, h->root.root.string); | |
3017 | bfd_set_error (bfd_error_bad_value); | |
3018 | return FALSE; | |
3019 | } | |
3020 | ||
3021 | /* Note that sgot is not involved in this | |
3022 | calculation. We always want the start of .got.plt. If we | |
3023 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
3024 | permitted by the ABI, we might have to change this | |
3025 | calculation. */ | |
6de2ae4a L |
3026 | relocation -= htab->elf.sgotplt->output_section->vma |
3027 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
3028 | break; |
3029 | ||
3030 | case R_X86_64_GOTPC32: | |
7b81dfbb | 3031 | case R_X86_64_GOTPC64: |
d6ab8113 | 3032 | /* Use global offset table as symbol value. */ |
6de2ae4a L |
3033 | relocation = htab->elf.sgotplt->output_section->vma |
3034 | + htab->elf.sgotplt->output_offset; | |
d6ab8113 JB |
3035 | unresolved_reloc = FALSE; |
3036 | break; | |
7b81dfbb AJ |
3037 | |
3038 | case R_X86_64_PLTOFF64: | |
3039 | /* Relocation is PLT entry relative to GOT. For local | |
3040 | symbols it's the symbol itself relative to GOT. */ | |
3041 | if (h != NULL | |
3042 | /* See PLT32 handling. */ | |
3043 | && h->plt.offset != (bfd_vma) -1 | |
6de2ae4a | 3044 | && htab->elf.splt != NULL) |
7b81dfbb | 3045 | { |
6de2ae4a L |
3046 | relocation = (htab->elf.splt->output_section->vma |
3047 | + htab->elf.splt->output_offset | |
7b81dfbb AJ |
3048 | + h->plt.offset); |
3049 | unresolved_reloc = FALSE; | |
3050 | } | |
3051 | ||
6de2ae4a L |
3052 | relocation -= htab->elf.sgotplt->output_section->vma |
3053 | + htab->elf.sgotplt->output_offset; | |
7b81dfbb | 3054 | break; |
d6ab8113 | 3055 | |
70256ad8 AJ |
3056 | case R_X86_64_PLT32: |
3057 | /* Relocation is to the entry for this symbol in the | |
3058 | procedure linkage table. */ | |
3059 | ||
3060 | /* Resolve a PLT32 reloc against a local symbol directly, | |
407443a3 | 3061 | without using the procedure linkage table. */ |
70256ad8 AJ |
3062 | if (h == NULL) |
3063 | break; | |
3064 | ||
c434dee6 | 3065 | if (h->plt.offset == (bfd_vma) -1 |
6de2ae4a | 3066 | || htab->elf.splt == NULL) |
70256ad8 AJ |
3067 | { |
3068 | /* We didn't make a PLT entry for this symbol. This | |
407443a3 AJ |
3069 | happens when statically linking PIC code, or when |
3070 | using -Bsymbolic. */ | |
70256ad8 AJ |
3071 | break; |
3072 | } | |
3073 | ||
6de2ae4a L |
3074 | relocation = (htab->elf.splt->output_section->vma |
3075 | + htab->elf.splt->output_offset | |
70256ad8 | 3076 | + h->plt.offset); |
b34976b6 | 3077 | unresolved_reloc = FALSE; |
70256ad8 AJ |
3078 | break; |
3079 | ||
fd8ab9e5 AJ |
3080 | case R_X86_64_PC8: |
3081 | case R_X86_64_PC16: | |
3082 | case R_X86_64_PC32: | |
6610a52d | 3083 | if (info->shared |
ba3bee0b | 3084 | && (input_section->flags & SEC_ALLOC) != 0 |
90f487df | 3085 | && (input_section->flags & SEC_READONLY) != 0 |
41bed6dd | 3086 | && h != NULL) |
6610a52d | 3087 | { |
41bed6dd L |
3088 | bfd_boolean fail = FALSE; |
3089 | bfd_boolean branch | |
3090 | = (r_type == R_X86_64_PC32 | |
3091 | && is_32bit_relative_branch (contents, rel->r_offset)); | |
3092 | ||
3093 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
3094 | { | |
3095 | /* Symbol is referenced locally. Make sure it is | |
3096 | defined locally or for a branch. */ | |
3097 | fail = !h->def_regular && !branch; | |
3098 | } | |
90f487df | 3099 | else |
41bed6dd L |
3100 | { |
3101 | /* Symbol isn't referenced locally. We only allow | |
3102 | branch to symbol with non-default visibility. */ | |
3103 | fail = (!branch | |
3104 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT); | |
3105 | } | |
3106 | ||
3107 | if (fail) | |
3108 | { | |
3109 | const char *fmt; | |
3110 | const char *v; | |
3111 | const char *pic = ""; | |
3112 | ||
3113 | switch (ELF_ST_VISIBILITY (h->other)) | |
3114 | { | |
3115 | case STV_HIDDEN: | |
3116 | v = _("hidden symbol"); | |
3117 | break; | |
3118 | case STV_INTERNAL: | |
3119 | v = _("internal symbol"); | |
3120 | break; | |
3121 | case STV_PROTECTED: | |
3122 | v = _("protected symbol"); | |
3123 | break; | |
3124 | default: | |
3125 | v = _("symbol"); | |
3126 | pic = _("; recompile with -fPIC"); | |
3127 | break; | |
3128 | } | |
3129 | ||
3130 | if (h->def_regular) | |
3131 | fmt = _("%B: relocation %s against %s `%s' can not be used when making a shared object%s"); | |
3132 | else | |
3133 | fmt = _("%B: relocation %s against undefined %s `%s' can not be used when making a shared object%s"); | |
3134 | ||
3135 | (*_bfd_error_handler) (fmt, input_bfd, | |
3136 | x86_64_elf_howto_table[r_type].name, | |
3137 | v, h->root.root.string, pic); | |
3138 | bfd_set_error (bfd_error_bad_value); | |
3139 | return FALSE; | |
3140 | } | |
6610a52d L |
3141 | } |
3142 | /* Fall through. */ | |
3143 | ||
70256ad8 AJ |
3144 | case R_X86_64_8: |
3145 | case R_X86_64_16: | |
3146 | case R_X86_64_32: | |
d6ab8113 | 3147 | case R_X86_64_PC64: |
6b3db546 | 3148 | case R_X86_64_64: |
80643fbc | 3149 | /* FIXME: The ABI says the linker should make sure the value is |
407443a3 | 3150 | the same when it's zeroextended to 64 bit. */ |
c434dee6 | 3151 | |
b1e24c02 | 3152 | if ((input_section->flags & SEC_ALLOC) == 0) |
c434dee6 AJ |
3153 | break; |
3154 | ||
3155 | if ((info->shared | |
4bc6e03a AJ |
3156 | && (h == NULL |
3157 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3158 | || h->root.type != bfd_link_hash_undefweak) | |
d8045f23 NC |
3159 | && (! IS_X86_64_PCREL_TYPE (r_type) |
3160 | || ! SYMBOL_CALLS_LOCAL (info, h))) | |
d40d037c AJ |
3161 | || (ELIMINATE_COPY_RELOCS |
3162 | && !info->shared | |
c434dee6 AJ |
3163 | && h != NULL |
3164 | && h->dynindx != -1 | |
f5385ebf AM |
3165 | && !h->non_got_ref |
3166 | && ((h->def_dynamic | |
3167 | && !h->def_regular) | |
c434dee6 | 3168 | || h->root.type == bfd_link_hash_undefweak |
0f88be7a | 3169 | || h->root.type == bfd_link_hash_undefined))) |
70256ad8 AJ |
3170 | { |
3171 | Elf_Internal_Rela outrel; | |
b34976b6 | 3172 | bfd_boolean skip, relocate; |
c434dee6 | 3173 | asection *sreloc; |
70256ad8 AJ |
3174 | |
3175 | /* When generating a shared object, these relocations | |
3176 | are copied into the output file to be resolved at run | |
407443a3 | 3177 | time. */ |
b34976b6 AM |
3178 | skip = FALSE; |
3179 | relocate = FALSE; | |
70256ad8 | 3180 | |
c629eae0 JJ |
3181 | outrel.r_offset = |
3182 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
c434dee6 | 3183 | rel->r_offset); |
c629eae0 | 3184 | if (outrel.r_offset == (bfd_vma) -1) |
b34976b6 | 3185 | skip = TRUE; |
0fb19cbc | 3186 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3187 | skip = TRUE, relocate = TRUE; |
70256ad8 AJ |
3188 | |
3189 | outrel.r_offset += (input_section->output_section->vma | |
3190 | + input_section->output_offset); | |
3191 | ||
3192 | if (skip) | |
0bb2d96a | 3193 | memset (&outrel, 0, sizeof outrel); |
c434dee6 | 3194 | |
fd8ab9e5 AJ |
3195 | /* h->dynindx may be -1 if this symbol was marked to |
3196 | become local. */ | |
3197 | else if (h != NULL | |
c434dee6 | 3198 | && h->dynindx != -1 |
d8045f23 NC |
3199 | && (IS_X86_64_PCREL_TYPE (r_type) |
3200 | || ! info->shared | |
3201 | || ! SYMBOLIC_BIND (info, h) | |
3202 | || ! h->def_regular)) | |
70256ad8 | 3203 | { |
70256ad8 | 3204 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); |
c434dee6 | 3205 | outrel.r_addend = rel->r_addend; |
70256ad8 AJ |
3206 | } |
3207 | else | |
3208 | { | |
c434dee6 | 3209 | /* This symbol is local, or marked to become local. */ |
607c0e09 AS |
3210 | if (r_type == R_X86_64_64) |
3211 | { | |
b34976b6 | 3212 | relocate = TRUE; |
607c0e09 AS |
3213 | outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE); |
3214 | outrel.r_addend = relocation + rel->r_addend; | |
3215 | } | |
3216 | else | |
3217 | { | |
3218 | long sindx; | |
3219 | ||
8517fae7 | 3220 | if (bfd_is_abs_section (sec)) |
607c0e09 AS |
3221 | sindx = 0; |
3222 | else if (sec == NULL || sec->owner == NULL) | |
3223 | { | |
3224 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3225 | return FALSE; |
607c0e09 AS |
3226 | } |
3227 | else | |
3228 | { | |
3229 | asection *osec; | |
3230 | ||
74541ad4 AM |
3231 | /* We are turning this relocation into one |
3232 | against a section symbol. It would be | |
3233 | proper to subtract the symbol's value, | |
3234 | osec->vma, from the emitted reloc addend, | |
3235 | but ld.so expects buggy relocs. */ | |
607c0e09 AS |
3236 | osec = sec->output_section; |
3237 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
3238 | if (sindx == 0) |
3239 | { | |
3240 | asection *oi = htab->elf.text_index_section; | |
3241 | sindx = elf_section_data (oi)->dynindx; | |
3242 | } | |
3243 | BFD_ASSERT (sindx != 0); | |
607c0e09 AS |
3244 | } |
3245 | ||
3246 | outrel.r_info = ELF64_R_INFO (sindx, r_type); | |
3247 | outrel.r_addend = relocation + rel->r_addend; | |
3248 | } | |
70256ad8 AJ |
3249 | } |
3250 | ||
cbe950e9 | 3251 | sreloc = elf_section_data (input_section)->sreloc; |
d8045f23 | 3252 | |
e7c33416 | 3253 | BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL); |
c434dee6 | 3254 | |
464d3bd4 | 3255 | elf64_x86_64_append_rela (output_bfd, sreloc, &outrel); |
70256ad8 AJ |
3256 | |
3257 | /* If this reloc is against an external symbol, we do | |
3258 | not want to fiddle with the addend. Otherwise, we | |
3259 | need to include the symbol value so that it becomes | |
3260 | an addend for the dynamic reloc. */ | |
0f88be7a | 3261 | if (! relocate) |
70256ad8 AJ |
3262 | continue; |
3263 | } | |
3264 | ||
3265 | break; | |
3266 | ||
bffbf940 | 3267 | case R_X86_64_TLSGD: |
67a4f2b7 AO |
3268 | case R_X86_64_GOTPC32_TLSDESC: |
3269 | case R_X86_64_TLSDESC_CALL: | |
bffbf940 | 3270 | case R_X86_64_GOTTPOFF: |
bffbf940 JJ |
3271 | tls_type = GOT_UNKNOWN; |
3272 | if (h == NULL && local_got_offsets) | |
3273 | tls_type = elf64_x86_64_local_got_tls_type (input_bfd) [r_symndx]; | |
3274 | else if (h != NULL) | |
142411ca L |
3275 | tls_type = elf64_x86_64_hash_entry (h)->tls_type; |
3276 | ||
3277 | if (! elf64_x86_64_tls_transition (info, input_bfd, | |
3278 | input_section, contents, | |
3279 | symtab_hdr, sym_hashes, | |
3280 | &r_type, tls_type, rel, | |
4c544807 | 3281 | relend, h, r_symndx)) |
534a31f6 | 3282 | return FALSE; |
bffbf940 JJ |
3283 | |
3284 | if (r_type == R_X86_64_TPOFF32) | |
3285 | { | |
142411ca L |
3286 | bfd_vma roff = rel->r_offset; |
3287 | ||
bffbf940 | 3288 | BFD_ASSERT (! unresolved_reloc); |
142411ca | 3289 | |
bffbf940 JJ |
3290 | if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSGD) |
3291 | { | |
bffbf940 | 3292 | /* GD->LE transition. |
abcf1d52 | 3293 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi |
a3fadc9a | 3294 | .word 0x6666; rex64; call __tls_get_addr |
bffbf940 JJ |
3295 | Change it into: |
3296 | movq %fs:0, %rax | |
3297 | leaq foo@tpoff(%rax), %rax */ | |
142411ca | 3298 | memcpy (contents + roff - 4, |
bffbf940 JJ |
3299 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0", |
3300 | 16); | |
eb4ff4d6 L |
3301 | bfd_put_32 (output_bfd, |
3302 | elf64_x86_64_tpoff (info, relocation), | |
142411ca | 3303 | contents + roff + 8); |
a3fadc9a | 3304 | /* Skip R_X86_64_PC32/R_X86_64_PLT32. */ |
bffbf940 JJ |
3305 | rel++; |
3306 | continue; | |
3307 | } | |
67a4f2b7 AO |
3308 | else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC) |
3309 | { | |
3310 | /* GDesc -> LE transition. | |
3311 | It's originally something like: | |
3312 | leaq x@tlsdesc(%rip), %rax | |
3313 | ||
3314 | Change it to: | |
c9736ba0 | 3315 | movl $x@tpoff, %rax. */ |
67a4f2b7 | 3316 | |
c9736ba0 | 3317 | unsigned int val, type; |
67a4f2b7 | 3318 | |
67a4f2b7 | 3319 | type = bfd_get_8 (input_bfd, contents + roff - 3); |
67a4f2b7 | 3320 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
3321 | bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1), |
3322 | contents + roff - 3); | |
3323 | bfd_put_8 (output_bfd, 0xc7, contents + roff - 2); | |
3324 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3325 | contents + roff - 1); | |
eb4ff4d6 L |
3326 | bfd_put_32 (output_bfd, |
3327 | elf64_x86_64_tpoff (info, relocation), | |
67a4f2b7 AO |
3328 | contents + roff); |
3329 | continue; | |
3330 | } | |
3331 | else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL) | |
3332 | { | |
3333 | /* GDesc -> LE transition. | |
3334 | It's originally: | |
3335 | call *(%rax) | |
3336 | Turn it into: | |
142411ca | 3337 | xchg %ax,%ax. */ |
10efb593 | 3338 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
3339 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3340 | continue; | |
3341 | } | |
142411ca | 3342 | else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_GOTTPOFF) |
bffbf940 | 3343 | { |
bffbf940 JJ |
3344 | /* IE->LE transition: |
3345 | Originally it can be one of: | |
3346 | movq foo@gottpoff(%rip), %reg | |
3347 | addq foo@gottpoff(%rip), %reg | |
3348 | We change it into: | |
3349 | movq $foo, %reg | |
3350 | leaq foo(%reg), %reg | |
3351 | addq $foo, %reg. */ | |
142411ca L |
3352 | |
3353 | unsigned int val, type, reg; | |
3354 | ||
3355 | val = bfd_get_8 (input_bfd, contents + roff - 3); | |
3356 | type = bfd_get_8 (input_bfd, contents + roff - 2); | |
3357 | reg = bfd_get_8 (input_bfd, contents + roff - 1); | |
bffbf940 | 3358 | reg >>= 3; |
bffbf940 JJ |
3359 | if (type == 0x8b) |
3360 | { | |
3361 | /* movq */ | |
3362 | if (val == 0x4c) | |
3363 | bfd_put_8 (output_bfd, 0x49, | |
142411ca | 3364 | contents + roff - 3); |
bffbf940 | 3365 | bfd_put_8 (output_bfd, 0xc7, |
142411ca | 3366 | contents + roff - 2); |
bffbf940 | 3367 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 3368 | contents + roff - 1); |
bffbf940 JJ |
3369 | } |
3370 | else if (reg == 4) | |
3371 | { | |
3372 | /* addq -> addq - addressing with %rsp/%r12 is | |
3373 | special */ | |
3374 | if (val == 0x4c) | |
3375 | bfd_put_8 (output_bfd, 0x49, | |
142411ca | 3376 | contents + roff - 3); |
bffbf940 | 3377 | bfd_put_8 (output_bfd, 0x81, |
142411ca | 3378 | contents + roff - 2); |
bffbf940 | 3379 | bfd_put_8 (output_bfd, 0xc0 | reg, |
142411ca | 3380 | contents + roff - 1); |
bffbf940 JJ |
3381 | } |
3382 | else | |
3383 | { | |
3384 | /* addq -> leaq */ | |
3385 | if (val == 0x4c) | |
3386 | bfd_put_8 (output_bfd, 0x4d, | |
142411ca | 3387 | contents + roff - 3); |
bffbf940 | 3388 | bfd_put_8 (output_bfd, 0x8d, |
142411ca | 3389 | contents + roff - 2); |
bffbf940 | 3390 | bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3), |
142411ca | 3391 | contents + roff - 1); |
bffbf940 | 3392 | } |
eb4ff4d6 L |
3393 | bfd_put_32 (output_bfd, |
3394 | elf64_x86_64_tpoff (info, relocation), | |
142411ca | 3395 | contents + roff); |
bffbf940 JJ |
3396 | continue; |
3397 | } | |
142411ca L |
3398 | else |
3399 | BFD_ASSERT (FALSE); | |
bffbf940 JJ |
3400 | } |
3401 | ||
6de2ae4a | 3402 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
3403 | abort (); |
3404 | ||
3405 | if (h != NULL) | |
67a4f2b7 AO |
3406 | { |
3407 | off = h->got.offset; | |
3408 | offplt = elf64_x86_64_hash_entry (h)->tlsdesc_got; | |
3409 | } | |
bffbf940 JJ |
3410 | else |
3411 | { | |
3412 | if (local_got_offsets == NULL) | |
3413 | abort (); | |
3414 | ||
3415 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3416 | offplt = local_tlsdesc_gotents[r_symndx]; |
bffbf940 JJ |
3417 | } |
3418 | ||
3419 | if ((off & 1) != 0) | |
3420 | off &= ~1; | |
26e41594 | 3421 | else |
bffbf940 JJ |
3422 | { |
3423 | Elf_Internal_Rela outrel; | |
bffbf940 | 3424 | int dr_type, indx; |
67a4f2b7 | 3425 | asection *sreloc; |
bffbf940 | 3426 | |
6de2ae4a | 3427 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
3428 | abort (); |
3429 | ||
67a4f2b7 AO |
3430 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
3431 | ||
3432 | if (GOT_TLS_GDESC_P (tls_type)) | |
3433 | { | |
3434 | outrel.r_info = ELF64_R_INFO (indx, R_X86_64_TLSDESC); | |
3435 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt | |
6de2ae4a L |
3436 | + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size); |
3437 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
3438 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3439 | + offplt |
3440 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 3441 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 3442 | if (indx == 0) |
eb4ff4d6 | 3443 | outrel.r_addend = relocation - elf64_x86_64_dtpoff_base (info); |
67a4f2b7 AO |
3444 | else |
3445 | outrel.r_addend = 0; | |
464d3bd4 | 3446 | elf64_x86_64_append_rela (output_bfd, sreloc, &outrel); |
67a4f2b7 AO |
3447 | } |
3448 | ||
6de2ae4a | 3449 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 3450 | |
6de2ae4a L |
3451 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3452 | + htab->elf.sgot->output_offset + off); | |
bffbf940 | 3453 | |
67a4f2b7 | 3454 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 | 3455 | dr_type = R_X86_64_DTPMOD64; |
67a4f2b7 AO |
3456 | else if (GOT_TLS_GDESC_P (tls_type)) |
3457 | goto dr_done; | |
bffbf940 JJ |
3458 | else |
3459 | dr_type = R_X86_64_TPOFF64; | |
3460 | ||
6de2ae4a | 3461 | bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off); |
bffbf940 | 3462 | outrel.r_addend = 0; |
67a4f2b7 AO |
3463 | if ((dr_type == R_X86_64_TPOFF64 |
3464 | || dr_type == R_X86_64_TLSDESC) && indx == 0) | |
eb4ff4d6 | 3465 | outrel.r_addend = relocation - elf64_x86_64_dtpoff_base (info); |
bffbf940 JJ |
3466 | outrel.r_info = ELF64_R_INFO (indx, dr_type); |
3467 | ||
464d3bd4 | 3468 | elf64_x86_64_append_rela (output_bfd, sreloc, &outrel); |
bffbf940 | 3469 | |
67a4f2b7 | 3470 | if (GOT_TLS_GD_P (tls_type)) |
bffbf940 JJ |
3471 | { |
3472 | if (indx == 0) | |
3473 | { | |
d40d037c | 3474 | BFD_ASSERT (! unresolved_reloc); |
bffbf940 | 3475 | bfd_put_64 (output_bfd, |
eb4ff4d6 | 3476 | relocation - elf64_x86_64_dtpoff_base (info), |
6de2ae4a | 3477 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
bffbf940 JJ |
3478 | } |
3479 | else | |
3480 | { | |
3481 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 3482 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
bffbf940 JJ |
3483 | outrel.r_info = ELF64_R_INFO (indx, |
3484 | R_X86_64_DTPOFF64); | |
3485 | outrel.r_offset += GOT_ENTRY_SIZE; | |
464d3bd4 L |
3486 | elf64_x86_64_append_rela (output_bfd, sreloc, |
3487 | &outrel); | |
bffbf940 JJ |
3488 | } |
3489 | } | |
3490 | ||
67a4f2b7 | 3491 | dr_done: |
bffbf940 JJ |
3492 | if (h != NULL) |
3493 | h->got.offset |= 1; | |
3494 | else | |
3495 | local_got_offsets[r_symndx] |= 1; | |
3496 | } | |
3497 | ||
67a4f2b7 AO |
3498 | if (off >= (bfd_vma) -2 |
3499 | && ! GOT_TLS_GDESC_P (tls_type)) | |
bffbf940 JJ |
3500 | abort (); |
3501 | if (r_type == ELF64_R_TYPE (rel->r_info)) | |
3502 | { | |
67a4f2b7 AO |
3503 | if (r_type == R_X86_64_GOTPC32_TLSDESC |
3504 | || r_type == R_X86_64_TLSDESC_CALL) | |
6de2ae4a L |
3505 | relocation = htab->elf.sgotplt->output_section->vma |
3506 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3507 | + offplt + htab->sgotplt_jump_table_size; |
3508 | else | |
6de2ae4a L |
3509 | relocation = htab->elf.sgot->output_section->vma |
3510 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 3511 | unresolved_reloc = FALSE; |
bffbf940 | 3512 | } |
142411ca | 3513 | else |
67a4f2b7 | 3514 | { |
142411ca | 3515 | bfd_vma roff = rel->r_offset; |
67a4f2b7 | 3516 | |
142411ca L |
3517 | if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSGD) |
3518 | { | |
3519 | /* GD->IE transition. | |
3520 | .byte 0x66; leaq foo@tlsgd(%rip), %rdi | |
3521 | .word 0x6666; rex64; call __tls_get_addr@plt | |
3522 | Change it into: | |
3523 | movq %fs:0, %rax | |
3524 | addq foo@gottpoff(%rip), %rax */ | |
3525 | memcpy (contents + roff - 4, | |
3526 | "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0", | |
3527 | 16); | |
3528 | ||
6de2ae4a L |
3529 | relocation = (htab->elf.sgot->output_section->vma |
3530 | + htab->elf.sgot->output_offset + off | |
142411ca L |
3531 | - roff |
3532 | - input_section->output_section->vma | |
3533 | - input_section->output_offset | |
3534 | - 12); | |
3535 | bfd_put_32 (output_bfd, relocation, | |
3536 | contents + roff + 8); | |
3537 | /* Skip R_X86_64_PLT32. */ | |
3538 | rel++; | |
3539 | continue; | |
3540 | } | |
3541 | else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC) | |
3542 | { | |
3543 | /* GDesc -> IE transition. | |
3544 | It's originally something like: | |
3545 | leaq x@tlsdesc(%rip), %rax | |
67a4f2b7 | 3546 | |
142411ca | 3547 | Change it to: |
c9736ba0 | 3548 | movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */ |
67a4f2b7 | 3549 | |
142411ca L |
3550 | /* Now modify the instruction as appropriate. To |
3551 | turn a leaq into a movq in the form we use it, it | |
3552 | suffices to change the second byte from 0x8d to | |
3553 | 0x8b. */ | |
3554 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
3555 | ||
3556 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
3557 | htab->elf.sgot->output_section->vma |
3558 | + htab->elf.sgot->output_offset + off | |
142411ca L |
3559 | - rel->r_offset |
3560 | - input_section->output_section->vma | |
3561 | - input_section->output_offset | |
3562 | - 4, | |
3563 | contents + roff); | |
3564 | continue; | |
3565 | } | |
3566 | else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL) | |
3567 | { | |
3568 | /* GDesc -> IE transition. | |
3569 | It's originally: | |
3570 | call *(%rax) | |
3571 | ||
3572 | Change it to: | |
c9736ba0 | 3573 | xchg %ax, %ax. */ |
142411ca | 3574 | |
142411ca L |
3575 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
3576 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); | |
3577 | continue; | |
3578 | } | |
3579 | else | |
3580 | BFD_ASSERT (FALSE); | |
67a4f2b7 | 3581 | } |
bffbf940 JJ |
3582 | break; |
3583 | ||
3584 | case R_X86_64_TLSLD: | |
142411ca L |
3585 | if (! elf64_x86_64_tls_transition (info, input_bfd, |
3586 | input_section, contents, | |
3587 | symtab_hdr, sym_hashes, | |
3588 | &r_type, GOT_UNKNOWN, | |
4c544807 | 3589 | rel, relend, h, r_symndx)) |
142411ca | 3590 | return FALSE; |
a3fadc9a | 3591 | |
142411ca L |
3592 | if (r_type != R_X86_64_TLSLD) |
3593 | { | |
bffbf940 | 3594 | /* LD->LE transition: |
a3fadc9a | 3595 | leaq foo@tlsld(%rip), %rdi; call __tls_get_addr. |
bffbf940 JJ |
3596 | We change it into: |
3597 | .word 0x6666; .byte 0x66; movl %fs:0, %rax. */ | |
142411ca L |
3598 | |
3599 | BFD_ASSERT (r_type == R_X86_64_TPOFF32); | |
bffbf940 JJ |
3600 | memcpy (contents + rel->r_offset - 3, |
3601 | "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12); | |
a3fadc9a | 3602 | /* Skip R_X86_64_PC32/R_X86_64_PLT32. */ |
bffbf940 JJ |
3603 | rel++; |
3604 | continue; | |
3605 | } | |
3606 | ||
6de2ae4a | 3607 | if (htab->elf.sgot == NULL) |
bffbf940 JJ |
3608 | abort (); |
3609 | ||
3610 | off = htab->tls_ld_got.offset; | |
3611 | if (off & 1) | |
3612 | off &= ~1; | |
3613 | else | |
3614 | { | |
3615 | Elf_Internal_Rela outrel; | |
bffbf940 | 3616 | |
6de2ae4a | 3617 | if (htab->elf.srelgot == NULL) |
bffbf940 JJ |
3618 | abort (); |
3619 | ||
6de2ae4a L |
3620 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3621 | + htab->elf.sgot->output_offset + off); | |
bffbf940 JJ |
3622 | |
3623 | bfd_put_64 (output_bfd, 0, | |
6de2ae4a | 3624 | htab->elf.sgot->contents + off); |
bffbf940 | 3625 | bfd_put_64 (output_bfd, 0, |
6de2ae4a | 3626 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
bffbf940 JJ |
3627 | outrel.r_info = ELF64_R_INFO (0, R_X86_64_DTPMOD64); |
3628 | outrel.r_addend = 0; | |
464d3bd4 L |
3629 | elf64_x86_64_append_rela (output_bfd, htab->elf.srelgot, |
3630 | &outrel); | |
bffbf940 JJ |
3631 | htab->tls_ld_got.offset |= 1; |
3632 | } | |
6de2ae4a L |
3633 | relocation = htab->elf.sgot->output_section->vma |
3634 | + htab->elf.sgot->output_offset + off; | |
b34976b6 | 3635 | unresolved_reloc = FALSE; |
bffbf940 JJ |
3636 | break; |
3637 | ||
3638 | case R_X86_64_DTPOFF32: | |
1d85728f | 3639 | if (!info->executable|| (input_section->flags & SEC_CODE) == 0) |
eb4ff4d6 | 3640 | relocation -= elf64_x86_64_dtpoff_base (info); |
bffbf940 | 3641 | else |
eb4ff4d6 | 3642 | relocation = elf64_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
3643 | break; |
3644 | ||
3645 | case R_X86_64_TPOFF32: | |
9b769489 | 3646 | BFD_ASSERT (info->executable); |
eb4ff4d6 | 3647 | relocation = elf64_x86_64_tpoff (info, relocation); |
bffbf940 JJ |
3648 | break; |
3649 | ||
70256ad8 AJ |
3650 | default: |
3651 | break; | |
3652 | } | |
8d88c4ca | 3653 | |
239e1f3a AM |
3654 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3655 | because such sections are not SEC_ALLOC and thus ld.so will | |
3656 | not process them. */ | |
c434dee6 | 3657 | if (unresolved_reloc |
239e1f3a | 3658 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 3659 | && h->def_dynamic)) |
c434dee6 | 3660 | (*_bfd_error_handler) |
843fe662 | 3661 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
3662 | input_bfd, |
3663 | input_section, | |
c434dee6 | 3664 | (long) rel->r_offset, |
843fe662 | 3665 | howto->name, |
c434dee6 AJ |
3666 | h->root.root.string); |
3667 | ||
cbe950e9 | 3668 | do_relocation: |
8d88c4ca | 3669 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
c434dee6 AJ |
3670 | contents, rel->r_offset, |
3671 | relocation, rel->r_addend); | |
8d88c4ca NC |
3672 | |
3673 | if (r != bfd_reloc_ok) | |
8da6118f | 3674 | { |
c434dee6 AJ |
3675 | const char *name; |
3676 | ||
3677 | if (h != NULL) | |
3678 | name = h->root.root.string; | |
3679 | else | |
8da6118f | 3680 | { |
c434dee6 AJ |
3681 | name = bfd_elf_string_from_elf_section (input_bfd, |
3682 | symtab_hdr->sh_link, | |
3683 | sym->st_name); | |
3684 | if (name == NULL) | |
b34976b6 | 3685 | return FALSE; |
c434dee6 AJ |
3686 | if (*name == '\0') |
3687 | name = bfd_section_name (input_bfd, sec); | |
3688 | } | |
3689 | ||
3690 | if (r == bfd_reloc_overflow) | |
3691 | { | |
c434dee6 | 3692 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
3693 | (info, (h ? &h->root : NULL), name, howto->name, |
3694 | (bfd_vma) 0, input_bfd, input_section, | |
3695 | rel->r_offset))) | |
b34976b6 | 3696 | return FALSE; |
c434dee6 AJ |
3697 | } |
3698 | else | |
3699 | { | |
3700 | (*_bfd_error_handler) | |
d003868e AM |
3701 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
3702 | input_bfd, input_section, | |
c434dee6 | 3703 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 3704 | return FALSE; |
8da6118f KH |
3705 | } |
3706 | } | |
8d88c4ca | 3707 | } |
70256ad8 | 3708 | |
b34976b6 | 3709 | return TRUE; |
70256ad8 AJ |
3710 | } |
3711 | ||
3712 | /* Finish up dynamic symbol handling. We set the contents of various | |
3713 | dynamic sections here. */ | |
3714 | ||
b34976b6 | 3715 | static bfd_boolean |
27482721 AJ |
3716 | elf64_x86_64_finish_dynamic_symbol (bfd *output_bfd, |
3717 | struct bfd_link_info *info, | |
3718 | struct elf_link_hash_entry *h, | |
3719 | Elf_Internal_Sym *sym) | |
70256ad8 | 3720 | { |
c434dee6 | 3721 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 | 3722 | |
c434dee6 | 3723 | htab = elf64_x86_64_hash_table (info); |
4dfe6ac6 NC |
3724 | if (htab == NULL) |
3725 | return FALSE; | |
70256ad8 AJ |
3726 | |
3727 | if (h->plt.offset != (bfd_vma) -1) | |
3728 | { | |
70256ad8 AJ |
3729 | bfd_vma plt_index; |
3730 | bfd_vma got_offset; | |
3731 | Elf_Internal_Rela rela; | |
947216bf | 3732 | bfd_byte *loc; |
cbe950e9 L |
3733 | asection *plt, *gotplt, *relplt; |
3734 | ||
3735 | /* When building a static executable, use .iplt, .igot.plt and | |
3736 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 3737 | if (htab->elf.splt != NULL) |
cbe950e9 | 3738 | { |
6de2ae4a L |
3739 | plt = htab->elf.splt; |
3740 | gotplt = htab->elf.sgotplt; | |
3741 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
3742 | } |
3743 | else | |
3744 | { | |
6de2ae4a L |
3745 | plt = htab->elf.iplt; |
3746 | gotplt = htab->elf.igotplt; | |
3747 | relplt = htab->elf.irelplt; | |
cbe950e9 | 3748 | } |
70256ad8 AJ |
3749 | |
3750 | /* This symbol has an entry in the procedure linkage table. Set | |
407443a3 | 3751 | it up. */ |
cbe950e9 L |
3752 | if ((h->dynindx == -1 |
3753 | && !((h->forced_local || info->executable) | |
3754 | && h->def_regular | |
3755 | && h->type == STT_GNU_IFUNC)) | |
3756 | || plt == NULL | |
3757 | || gotplt == NULL | |
3758 | || relplt == NULL) | |
c434dee6 | 3759 | abort (); |
70256ad8 AJ |
3760 | |
3761 | /* Get the index in the procedure linkage table which | |
3762 | corresponds to this symbol. This is the index of this symbol | |
3763 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 3764 | first entry in the procedure linkage table is reserved. |
6bbec505 | 3765 | |
cbe950e9 | 3766 | Get the offset into the .got table of the entry that |
407443a3 | 3767 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE |
cbe950e9 L |
3768 | bytes. The first three are reserved for the dynamic linker. |
3769 | ||
3770 | For static executables, we don't reserve anything. */ | |
3771 | ||
6de2ae4a | 3772 | if (plt == htab->elf.splt) |
cbe950e9 L |
3773 | { |
3774 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3775 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
3776 | } | |
3777 | else | |
3778 | { | |
3779 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
3780 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
3781 | } | |
70256ad8 AJ |
3782 | |
3783 | /* Fill in the entry in the procedure linkage table. */ | |
cbe950e9 | 3784 | memcpy (plt->contents + h->plt.offset, elf64_x86_64_plt_entry, |
70256ad8 AJ |
3785 | PLT_ENTRY_SIZE); |
3786 | ||
3787 | /* Insert the relocation positions of the plt section. The magic | |
3788 | numbers at the end of the statements are the positions of the | |
3789 | relocations in the plt section. */ | |
653165cc AJ |
3790 | /* Put offset for jmp *name@GOTPCREL(%rip), since the |
3791 | instruction uses 6 bytes, subtract this value. */ | |
3792 | bfd_put_32 (output_bfd, | |
cbe950e9 L |
3793 | (gotplt->output_section->vma |
3794 | + gotplt->output_offset | |
653165cc | 3795 | + got_offset |
cbe950e9 L |
3796 | - plt->output_section->vma |
3797 | - plt->output_offset | |
653165cc AJ |
3798 | - h->plt.offset |
3799 | - 6), | |
cbe950e9 L |
3800 | plt->contents + h->plt.offset + 2); |
3801 | ||
3802 | /* Don't fill PLT entry for static executables. */ | |
6de2ae4a | 3803 | if (plt == htab->elf.splt) |
cbe950e9 L |
3804 | { |
3805 | /* Put relocation index. */ | |
3806 | bfd_put_32 (output_bfd, plt_index, | |
3807 | plt->contents + h->plt.offset + 7); | |
3808 | /* Put offset for jmp .PLT0. */ | |
3809 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), | |
3810 | plt->contents + h->plt.offset + 12); | |
3811 | } | |
70256ad8 | 3812 | |
653165cc AJ |
3813 | /* Fill in the entry in the global offset table, initially this |
3814 | points to the pushq instruction in the PLT which is at offset 6. */ | |
cbe950e9 L |
3815 | bfd_put_64 (output_bfd, (plt->output_section->vma |
3816 | + plt->output_offset | |
70256ad8 | 3817 | + h->plt.offset + 6), |
cbe950e9 | 3818 | gotplt->contents + got_offset); |
70256ad8 AJ |
3819 | |
3820 | /* Fill in the entry in the .rela.plt section. */ | |
cbe950e9 L |
3821 | rela.r_offset = (gotplt->output_section->vma |
3822 | + gotplt->output_offset | |
70256ad8 | 3823 | + got_offset); |
cbe950e9 L |
3824 | if (h->dynindx == -1 |
3825 | || ((info->executable | |
3826 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
3827 | && h->def_regular | |
3828 | && h->type == STT_GNU_IFUNC)) | |
3829 | { | |
3830 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
3831 | R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */ | |
3832 | rela.r_info = ELF64_R_INFO (0, R_X86_64_IRELATIVE); | |
3833 | rela.r_addend = (h->root.u.def.value | |
3834 | + h->root.u.def.section->output_section->vma | |
3835 | + h->root.u.def.section->output_offset); | |
3836 | } | |
3837 | else | |
3838 | { | |
3839 | rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_JUMP_SLOT); | |
3840 | rela.r_addend = 0; | |
3841 | } | |
3842 | loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela); | |
c434dee6 | 3843 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
70256ad8 | 3844 | |
f5385ebf | 3845 | if (!h->def_regular) |
70256ad8 AJ |
3846 | { |
3847 | /* Mark the symbol as undefined, rather than as defined in | |
47a9f7b3 JJ |
3848 | the .plt section. Leave the value if there were any |
3849 | relocations where pointer equality matters (this is a clue | |
c434dee6 AJ |
3850 | for the dynamic linker, to make function pointer |
3851 | comparisons work between an application and shared | |
47a9f7b3 JJ |
3852 | library), otherwise set it to zero. If a function is only |
3853 | called from a binary, there is no need to slow down | |
3854 | shared libraries because of that. */ | |
70256ad8 | 3855 | sym->st_shndx = SHN_UNDEF; |
f5385ebf | 3856 | if (!h->pointer_equality_needed) |
47a9f7b3 | 3857 | sym->st_value = 0; |
70256ad8 AJ |
3858 | } |
3859 | } | |
3860 | ||
bffbf940 | 3861 | if (h->got.offset != (bfd_vma) -1 |
67a4f2b7 | 3862 | && ! GOT_TLS_GD_ANY_P (elf64_x86_64_hash_entry (h)->tls_type) |
bffbf940 | 3863 | && elf64_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE) |
053579d7 | 3864 | { |
053579d7 AJ |
3865 | Elf_Internal_Rela rela; |
3866 | ||
3867 | /* This symbol has an entry in the global offset table. Set it | |
bffbf940 | 3868 | up. */ |
6de2ae4a | 3869 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
c434dee6 | 3870 | abort (); |
053579d7 | 3871 | |
6de2ae4a L |
3872 | rela.r_offset = (htab->elf.sgot->output_section->vma |
3873 | + htab->elf.sgot->output_offset | |
dc810e39 | 3874 | + (h->got.offset &~ (bfd_vma) 1)); |
053579d7 AJ |
3875 | |
3876 | /* If this is a static link, or it is a -Bsymbolic link and the | |
3877 | symbol is defined locally or was forced to be local because | |
3878 | of a version file, we just want to emit a RELATIVE reloc. | |
3879 | The entry in the global offset table will already have been | |
3880 | initialized in the relocate_section function. */ | |
710ab287 | 3881 | if (h->def_regular |
0018b0a3 L |
3882 | && h->type == STT_GNU_IFUNC) |
3883 | { | |
710ab287 L |
3884 | if (info->shared) |
3885 | { | |
3886 | /* Generate R_X86_64_GLOB_DAT. */ | |
3887 | goto do_glob_dat; | |
3888 | } | |
3889 | else | |
3890 | { | |
90d60710 L |
3891 | asection *plt; |
3892 | ||
710ab287 L |
3893 | if (!h->pointer_equality_needed) |
3894 | abort (); | |
3895 | ||
3896 | /* For non-shared object, we can't use .got.plt, which | |
3897 | contains the real function addres if we need pointer | |
3898 | equality. We load the GOT entry with the PLT entry. */ | |
90d60710 | 3899 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
710ab287 L |
3900 | bfd_put_64 (output_bfd, (plt->output_section->vma |
3901 | + plt->output_offset | |
3902 | + h->plt.offset), | |
6de2ae4a | 3903 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
3904 | return TRUE; |
3905 | } | |
0018b0a3 L |
3906 | } |
3907 | else if (info->shared | |
3908 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
053579d7 | 3909 | { |
41bed6dd L |
3910 | if (!h->def_regular) |
3911 | return FALSE; | |
cc78d0af | 3912 | BFD_ASSERT((h->got.offset & 1) != 0); |
053579d7 AJ |
3913 | rela.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE); |
3914 | rela.r_addend = (h->root.u.def.value | |
3915 | + h->root.u.def.section->output_section->vma | |
3916 | + h->root.u.def.section->output_offset); | |
3917 | } | |
3918 | else | |
3919 | { | |
3920 | BFD_ASSERT((h->got.offset & 1) == 0); | |
710ab287 | 3921 | do_glob_dat: |
c434dee6 | 3922 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 3923 | htab->elf.sgot->contents + h->got.offset); |
053579d7 AJ |
3924 | rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_GLOB_DAT); |
3925 | rela.r_addend = 0; | |
3926 | } | |
3927 | ||
464d3bd4 | 3928 | elf64_x86_64_append_rela (output_bfd, htab->elf.srelgot, &rela); |
053579d7 AJ |
3929 | } |
3930 | ||
f5385ebf | 3931 | if (h->needs_copy) |
70256ad8 | 3932 | { |
70256ad8 AJ |
3933 | Elf_Internal_Rela rela; |
3934 | ||
3935 | /* This symbol needs a copy reloc. Set it up. */ | |
3936 | ||
c434dee6 AJ |
3937 | if (h->dynindx == -1 |
3938 | || (h->root.type != bfd_link_hash_defined | |
3939 | && h->root.type != bfd_link_hash_defweak) | |
3940 | || htab->srelbss == NULL) | |
3941 | abort (); | |
70256ad8 AJ |
3942 | |
3943 | rela.r_offset = (h->root.u.def.value | |
3944 | + h->root.u.def.section->output_section->vma | |
3945 | + h->root.u.def.section->output_offset); | |
3946 | rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_COPY); | |
3947 | rela.r_addend = 0; | |
464d3bd4 | 3948 | elf64_x86_64_append_rela (output_bfd, htab->srelbss, &rela); |
70256ad8 AJ |
3949 | } |
3950 | ||
c25bc9fc L |
3951 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may |
3952 | be NULL for local symbols. */ | |
3953 | if (sym != NULL | |
3954 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3955 | || h == htab->elf.hgot)) | |
70256ad8 AJ |
3956 | sym->st_shndx = SHN_ABS; |
3957 | ||
b34976b6 | 3958 | return TRUE; |
70256ad8 AJ |
3959 | } |
3960 | ||
c25bc9fc L |
3961 | /* Finish up local dynamic symbol handling. We set the contents of |
3962 | various dynamic sections here. */ | |
3963 | ||
3964 | static bfd_boolean | |
3965 | elf64_x86_64_finish_local_dynamic_symbol (void **slot, void *inf) | |
3966 | { | |
3967 | struct elf_link_hash_entry *h | |
3968 | = (struct elf_link_hash_entry *) *slot; | |
3969 | struct bfd_link_info *info | |
3970 | = (struct bfd_link_info *) inf; | |
3971 | ||
3972 | return elf64_x86_64_finish_dynamic_symbol (info->output_bfd, | |
3973 | info, h, NULL); | |
3974 | } | |
3975 | ||
c434dee6 AJ |
3976 | /* Used to decide how to sort relocs in an optimal manner for the |
3977 | dynamic linker, before writing them out. */ | |
3978 | ||
3979 | static enum elf_reloc_type_class | |
27482721 | 3980 | elf64_x86_64_reloc_type_class (const Elf_Internal_Rela *rela) |
c434dee6 AJ |
3981 | { |
3982 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
3983 | { | |
3984 | case R_X86_64_RELATIVE: | |
3985 | return reloc_class_relative; | |
3986 | case R_X86_64_JUMP_SLOT: | |
3987 | return reloc_class_plt; | |
3988 | case R_X86_64_COPY: | |
3989 | return reloc_class_copy; | |
3990 | default: | |
3991 | return reloc_class_normal; | |
3992 | } | |
3993 | } | |
3994 | ||
70256ad8 AJ |
3995 | /* Finish up the dynamic sections. */ |
3996 | ||
b34976b6 | 3997 | static bfd_boolean |
27482721 | 3998 | elf64_x86_64_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
70256ad8 | 3999 | { |
c434dee6 | 4000 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 AJ |
4001 | bfd *dynobj; |
4002 | asection *sdyn; | |
70256ad8 | 4003 | |
c434dee6 | 4004 | htab = elf64_x86_64_hash_table (info); |
4dfe6ac6 NC |
4005 | if (htab == NULL) |
4006 | return FALSE; | |
4007 | ||
c434dee6 | 4008 | dynobj = htab->elf.dynobj; |
70256ad8 AJ |
4009 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
4010 | ||
c434dee6 | 4011 | if (htab->elf.dynamic_sections_created) |
70256ad8 | 4012 | { |
70256ad8 AJ |
4013 | Elf64_External_Dyn *dyncon, *dynconend; |
4014 | ||
6de2ae4a | 4015 | if (sdyn == NULL || htab->elf.sgot == NULL) |
c434dee6 | 4016 | abort (); |
70256ad8 AJ |
4017 | |
4018 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 4019 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
70256ad8 AJ |
4020 | for (; dyncon < dynconend; dyncon++) |
4021 | { | |
4022 | Elf_Internal_Dyn dyn; | |
70256ad8 AJ |
4023 | asection *s; |
4024 | ||
4025 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
4026 | ||
4027 | switch (dyn.d_tag) | |
4028 | { | |
4029 | default: | |
053579d7 | 4030 | continue; |
70256ad8 AJ |
4031 | |
4032 | case DT_PLTGOT: | |
6de2ae4a | 4033 | s = htab->elf.sgotplt; |
8c37241b | 4034 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
c434dee6 | 4035 | break; |
70256ad8 AJ |
4036 | |
4037 | case DT_JMPREL: | |
6de2ae4a | 4038 | dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma; |
c434dee6 | 4039 | break; |
70256ad8 | 4040 | |
c434dee6 | 4041 | case DT_PLTRELSZ: |
6de2ae4a | 4042 | s = htab->elf.srelplt->output_section; |
eea6121a | 4043 | dyn.d_un.d_val = s->size; |
70256ad8 AJ |
4044 | break; |
4045 | ||
4046 | case DT_RELASZ: | |
c434dee6 AJ |
4047 | /* The procedure linkage table relocs (DT_JMPREL) should |
4048 | not be included in the overall relocs (DT_RELA). | |
4049 | Therefore, we override the DT_RELASZ entry here to | |
4050 | make it not include the JMPREL relocs. Since the | |
4051 | linker script arranges for .rela.plt to follow all | |
4052 | other relocation sections, we don't have to worry | |
4053 | about changing the DT_RELA entry. */ | |
6de2ae4a | 4054 | if (htab->elf.srelplt != NULL) |
70256ad8 | 4055 | { |
6de2ae4a | 4056 | s = htab->elf.srelplt->output_section; |
eea6121a | 4057 | dyn.d_un.d_val -= s->size; |
70256ad8 AJ |
4058 | } |
4059 | break; | |
67a4f2b7 AO |
4060 | |
4061 | case DT_TLSDESC_PLT: | |
6de2ae4a | 4062 | s = htab->elf.splt; |
67a4f2b7 AO |
4063 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
4064 | + htab->tlsdesc_plt; | |
4065 | break; | |
4066 | ||
4067 | case DT_TLSDESC_GOT: | |
6de2ae4a | 4068 | s = htab->elf.sgot; |
67a4f2b7 AO |
4069 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
4070 | + htab->tlsdesc_got; | |
4071 | break; | |
70256ad8 | 4072 | } |
c434dee6 | 4073 | |
70256ad8 AJ |
4074 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
4075 | } | |
4076 | ||
c434dee6 | 4077 | /* Fill in the special first entry in the procedure linkage table. */ |
6de2ae4a | 4078 | if (htab->elf.splt && htab->elf.splt->size > 0) |
70256ad8 | 4079 | { |
653165cc | 4080 | /* Fill in the first entry in the procedure linkage table. */ |
6de2ae4a | 4081 | memcpy (htab->elf.splt->contents, elf64_x86_64_plt0_entry, |
c434dee6 | 4082 | PLT_ENTRY_SIZE); |
653165cc AJ |
4083 | /* Add offset for pushq GOT+8(%rip), since the instruction |
4084 | uses 6 bytes subtract this value. */ | |
4085 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4086 | (htab->elf.sgotplt->output_section->vma |
4087 | + htab->elf.sgotplt->output_offset | |
653165cc | 4088 | + 8 |
6de2ae4a L |
4089 | - htab->elf.splt->output_section->vma |
4090 | - htab->elf.splt->output_offset | |
653165cc | 4091 | - 6), |
6de2ae4a | 4092 | htab->elf.splt->contents + 2); |
653165cc AJ |
4093 | /* Add offset for jmp *GOT+16(%rip). The 12 is the offset to |
4094 | the end of the instruction. */ | |
4095 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4096 | (htab->elf.sgotplt->output_section->vma |
4097 | + htab->elf.sgotplt->output_offset | |
653165cc | 4098 | + 16 |
6de2ae4a L |
4099 | - htab->elf.splt->output_section->vma |
4100 | - htab->elf.splt->output_offset | |
653165cc | 4101 | - 12), |
6de2ae4a | 4102 | htab->elf.splt->contents + 8); |
653165cc | 4103 | |
6de2ae4a | 4104 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize = |
c434dee6 | 4105 | PLT_ENTRY_SIZE; |
67a4f2b7 AO |
4106 | |
4107 | if (htab->tlsdesc_plt) | |
4108 | { | |
4109 | bfd_put_64 (output_bfd, (bfd_vma) 0, | |
6de2ae4a | 4110 | htab->elf.sgot->contents + htab->tlsdesc_got); |
67a4f2b7 | 4111 | |
6de2ae4a | 4112 | memcpy (htab->elf.splt->contents + htab->tlsdesc_plt, |
67a4f2b7 AO |
4113 | elf64_x86_64_plt0_entry, |
4114 | PLT_ENTRY_SIZE); | |
4115 | ||
4116 | /* Add offset for pushq GOT+8(%rip), since the | |
4117 | instruction uses 6 bytes subtract this value. */ | |
4118 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4119 | (htab->elf.sgotplt->output_section->vma |
4120 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 | 4121 | + 8 |
6de2ae4a L |
4122 | - htab->elf.splt->output_section->vma |
4123 | - htab->elf.splt->output_offset | |
67a4f2b7 AO |
4124 | - htab->tlsdesc_plt |
4125 | - 6), | |
6de2ae4a | 4126 | htab->elf.splt->contents + htab->tlsdesc_plt + 2); |
67a4f2b7 AO |
4127 | /* Add offset for jmp *GOT+TDG(%rip), where TGD stands for |
4128 | htab->tlsdesc_got. The 12 is the offset to the end of | |
4129 | the instruction. */ | |
4130 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4131 | (htab->elf.sgot->output_section->vma |
4132 | + htab->elf.sgot->output_offset | |
67a4f2b7 | 4133 | + htab->tlsdesc_got |
6de2ae4a L |
4134 | - htab->elf.splt->output_section->vma |
4135 | - htab->elf.splt->output_offset | |
67a4f2b7 AO |
4136 | - htab->tlsdesc_plt |
4137 | - 12), | |
6de2ae4a | 4138 | htab->elf.splt->contents + htab->tlsdesc_plt + 8); |
67a4f2b7 | 4139 | } |
70256ad8 | 4140 | } |
70256ad8 AJ |
4141 | } |
4142 | ||
6de2ae4a | 4143 | if (htab->elf.sgotplt) |
70256ad8 | 4144 | { |
c434dee6 | 4145 | /* Fill in the first three entries in the global offset table. */ |
6de2ae4a | 4146 | if (htab->elf.sgotplt->size > 0) |
c434dee6 AJ |
4147 | { |
4148 | /* Set the first entry in the global offset table to the address of | |
4149 | the dynamic section. */ | |
4150 | if (sdyn == NULL) | |
6de2ae4a | 4151 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents); |
c434dee6 AJ |
4152 | else |
4153 | bfd_put_64 (output_bfd, | |
4154 | sdyn->output_section->vma + sdyn->output_offset, | |
6de2ae4a | 4155 | htab->elf.sgotplt->contents); |
c434dee6 | 4156 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
6de2ae4a L |
4157 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE); |
4158 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2); | |
c434dee6 | 4159 | } |
70256ad8 | 4160 | |
6de2ae4a | 4161 | elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = |
c434dee6 AJ |
4162 | GOT_ENTRY_SIZE; |
4163 | } | |
70256ad8 | 4164 | |
6de2ae4a L |
4165 | if (htab->elf.sgot && htab->elf.sgot->size > 0) |
4166 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize | |
8c37241b JJ |
4167 | = GOT_ENTRY_SIZE; |
4168 | ||
c25bc9fc L |
4169 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
4170 | htab_traverse (htab->loc_hash_table, | |
4171 | elf64_x86_64_finish_local_dynamic_symbol, | |
4172 | info); | |
4173 | ||
b34976b6 | 4174 | return TRUE; |
8d88c4ca NC |
4175 | } |
4176 | ||
4c45e5c9 JJ |
4177 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4178 | or (bfd_vma) -1 if it should not be included. */ | |
4179 | ||
4180 | static bfd_vma | |
4181 | elf64_x86_64_plt_sym_val (bfd_vma i, const asection *plt, | |
4182 | const arelent *rel ATTRIBUTE_UNUSED) | |
4183 | { | |
4184 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
4185 | } | |
8df9fc9d | 4186 | |
d2b2c203 DJ |
4187 | /* Handle an x86-64 specific section when reading an object file. This |
4188 | is called when elfcode.h finds a section with an unknown type. */ | |
4189 | ||
4190 | static bfd_boolean | |
6dc132d9 L |
4191 | elf64_x86_64_section_from_shdr (bfd *abfd, |
4192 | Elf_Internal_Shdr *hdr, | |
4193 | const char *name, | |
4194 | int shindex) | |
d2b2c203 DJ |
4195 | { |
4196 | if (hdr->sh_type != SHT_X86_64_UNWIND) | |
4197 | return FALSE; | |
4198 | ||
6dc132d9 | 4199 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
d2b2c203 DJ |
4200 | return FALSE; |
4201 | ||
4202 | return TRUE; | |
4203 | } | |
4204 | ||
3b22753a L |
4205 | /* Hook called by the linker routine which adds symbols from an object |
4206 | file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead | |
4207 | of .bss. */ | |
4208 | ||
4209 | static bfd_boolean | |
4210 | elf64_x86_64_add_symbol_hook (bfd *abfd, | |
d8045f23 | 4211 | struct bfd_link_info *info, |
3b22753a L |
4212 | Elf_Internal_Sym *sym, |
4213 | const char **namep ATTRIBUTE_UNUSED, | |
4214 | flagword *flagsp ATTRIBUTE_UNUSED, | |
d8045f23 NC |
4215 | asection **secp, |
4216 | bfd_vma *valp) | |
3b22753a L |
4217 | { |
4218 | asection *lcomm; | |
4219 | ||
4220 | switch (sym->st_shndx) | |
4221 | { | |
4222 | case SHN_X86_64_LCOMMON: | |
4223 | lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON"); | |
4224 | if (lcomm == NULL) | |
4225 | { | |
4226 | lcomm = bfd_make_section_with_flags (abfd, | |
4227 | "LARGE_COMMON", | |
4228 | (SEC_ALLOC | |
4229 | | SEC_IS_COMMON | |
4230 | | SEC_LINKER_CREATED)); | |
4231 | if (lcomm == NULL) | |
4232 | return FALSE; | |
4233 | elf_section_flags (lcomm) |= SHF_X86_64_LARGE; | |
4234 | } | |
4235 | *secp = lcomm; | |
4236 | *valp = sym->st_size; | |
c35bdf6e | 4237 | return TRUE; |
3b22753a | 4238 | } |
d8045f23 | 4239 | |
c16153ae L |
4240 | if ((abfd->flags & DYNAMIC) == 0 |
4241 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
d8045f23 NC |
4242 | elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE; |
4243 | ||
3b22753a L |
4244 | return TRUE; |
4245 | } | |
4246 | ||
4247 | ||
4248 | /* Given a BFD section, try to locate the corresponding ELF section | |
4249 | index. */ | |
4250 | ||
4251 | static bfd_boolean | |
4252 | elf64_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, | |
91d6fa6a | 4253 | asection *sec, int *index_return) |
3b22753a L |
4254 | { |
4255 | if (sec == &_bfd_elf_large_com_section) | |
4256 | { | |
91d6fa6a | 4257 | *index_return = SHN_X86_64_LCOMMON; |
3b22753a L |
4258 | return TRUE; |
4259 | } | |
4260 | return FALSE; | |
4261 | } | |
4262 | ||
4263 | /* Process a symbol. */ | |
4264 | ||
4265 | static void | |
4266 | elf64_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
4267 | asymbol *asym) | |
4268 | { | |
4269 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
4270 | ||
4271 | switch (elfsym->internal_elf_sym.st_shndx) | |
4272 | { | |
4273 | case SHN_X86_64_LCOMMON: | |
4274 | asym->section = &_bfd_elf_large_com_section; | |
4275 | asym->value = elfsym->internal_elf_sym.st_size; | |
4276 | /* Common symbol doesn't set BSF_GLOBAL. */ | |
4277 | asym->flags &= ~BSF_GLOBAL; | |
4278 | break; | |
4279 | } | |
4280 | } | |
4281 | ||
4282 | static bfd_boolean | |
4283 | elf64_x86_64_common_definition (Elf_Internal_Sym *sym) | |
4284 | { | |
4285 | return (sym->st_shndx == SHN_COMMON | |
4286 | || sym->st_shndx == SHN_X86_64_LCOMMON); | |
4287 | } | |
4288 | ||
4289 | static unsigned int | |
4290 | elf64_x86_64_common_section_index (asection *sec) | |
4291 | { | |
4292 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
4293 | return SHN_COMMON; | |
4294 | else | |
4295 | return SHN_X86_64_LCOMMON; | |
4296 | } | |
4297 | ||
4298 | static asection * | |
4299 | elf64_x86_64_common_section (asection *sec) | |
4300 | { | |
4301 | if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0) | |
4302 | return bfd_com_section_ptr; | |
4303 | else | |
4304 | return &_bfd_elf_large_com_section; | |
4305 | } | |
4306 | ||
4307 | static bfd_boolean | |
4308 | elf64_x86_64_merge_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4309 | struct elf_link_hash_entry **sym_hash ATTRIBUTE_UNUSED, | |
4310 | struct elf_link_hash_entry *h, | |
4311 | Elf_Internal_Sym *sym, | |
00492999 | 4312 | asection **psec, |
3b22753a L |
4313 | bfd_vma *pvalue ATTRIBUTE_UNUSED, |
4314 | unsigned int *pold_alignment ATTRIBUTE_UNUSED, | |
4315 | bfd_boolean *skip ATTRIBUTE_UNUSED, | |
4316 | bfd_boolean *override ATTRIBUTE_UNUSED, | |
4317 | bfd_boolean *type_change_ok ATTRIBUTE_UNUSED, | |
4318 | bfd_boolean *size_change_ok ATTRIBUTE_UNUSED, | |
4319 | bfd_boolean *newdef ATTRIBUTE_UNUSED, | |
4320 | bfd_boolean *newdyn, | |
4321 | bfd_boolean *newdyncommon ATTRIBUTE_UNUSED, | |
4322 | bfd_boolean *newweak ATTRIBUTE_UNUSED, | |
4323 | bfd *abfd ATTRIBUTE_UNUSED, | |
4324 | asection **sec, | |
4325 | bfd_boolean *olddef ATTRIBUTE_UNUSED, | |
4326 | bfd_boolean *olddyn, | |
4327 | bfd_boolean *olddyncommon ATTRIBUTE_UNUSED, | |
4328 | bfd_boolean *oldweak ATTRIBUTE_UNUSED, | |
00492999 | 4329 | bfd *oldbfd, |
3b22753a L |
4330 | asection **oldsec) |
4331 | { | |
4332 | /* A normal common symbol and a large common symbol result in a | |
00492999 L |
4333 | normal common symbol. We turn the large common symbol into a |
4334 | normal one. */ | |
3b22753a L |
4335 | if (!*olddyn |
4336 | && h->root.type == bfd_link_hash_common | |
4337 | && !*newdyn | |
4338 | && bfd_is_com_section (*sec) | |
00492999 | 4339 | && *oldsec != *sec) |
3b22753a | 4340 | { |
00492999 L |
4341 | if (sym->st_shndx == SHN_COMMON |
4342 | && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) != 0) | |
4343 | { | |
4344 | h->root.u.c.p->section | |
4345 | = bfd_make_section_old_way (oldbfd, "COMMON"); | |
4346 | h->root.u.c.p->section->flags = SEC_ALLOC; | |
4347 | } | |
4348 | else if (sym->st_shndx == SHN_X86_64_LCOMMON | |
4349 | && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) == 0) | |
9a2e389a | 4350 | *psec = *sec = bfd_com_section_ptr; |
3b22753a L |
4351 | } |
4352 | ||
4353 | return TRUE; | |
4354 | } | |
4355 | ||
4356 | static int | |
a6b96beb AM |
4357 | elf64_x86_64_additional_program_headers (bfd *abfd, |
4358 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
3b22753a L |
4359 | { |
4360 | asection *s; | |
9a2e389a | 4361 | int count = 0; |
3b22753a L |
4362 | |
4363 | /* Check to see if we need a large readonly segment. */ | |
4364 | s = bfd_get_section_by_name (abfd, ".lrodata"); | |
4365 | if (s && (s->flags & SEC_LOAD)) | |
4366 | count++; | |
4367 | ||
4368 | /* Check to see if we need a large data segment. Since .lbss sections | |
4369 | is placed right after the .bss section, there should be no need for | |
4370 | a large data segment just because of .lbss. */ | |
4371 | s = bfd_get_section_by_name (abfd, ".ldata"); | |
4372 | if (s && (s->flags & SEC_LOAD)) | |
4373 | count++; | |
4374 | ||
4375 | return count; | |
4376 | } | |
4377 | ||
fdc90cb4 JJ |
4378 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
4379 | ||
4380 | static bfd_boolean | |
4381 | elf64_x86_64_hash_symbol (struct elf_link_hash_entry *h) | |
4382 | { | |
4383 | if (h->plt.offset != (bfd_vma) -1 | |
4384 | && !h->def_regular | |
4385 | && !h->pointer_equality_needed) | |
4386 | return FALSE; | |
4387 | ||
4388 | return _bfd_elf_hash_symbol (h); | |
4389 | } | |
4390 | ||
9a2e389a | 4391 | static const struct bfd_elf_special_section |
3b22753a L |
4392 | elf64_x86_64_special_sections[]= |
4393 | { | |
0112cd26 NC |
4394 | { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, |
4395 | { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
4396 | { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE}, | |
4397 | { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
4398 | { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE}, | |
4399 | { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE}, | |
4400 | { NULL, 0, 0, 0, 0 } | |
3b22753a L |
4401 | }; |
4402 | ||
70256ad8 AJ |
4403 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_vec |
4404 | #define TARGET_LITTLE_NAME "elf64-x86-64" | |
4405 | #define ELF_ARCH bfd_arch_i386 | |
4406 | #define ELF_MACHINE_CODE EM_X86_64 | |
f7661549 | 4407 | #define ELF_MAXPAGESIZE 0x200000 |
2043964e | 4408 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 4409 | #define ELF_COMMONPAGESIZE 0x1000 |
70256ad8 AJ |
4410 | |
4411 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4412 | #define elf_backend_can_refcount 1 |
70256ad8 AJ |
4413 | #define elf_backend_want_got_plt 1 |
4414 | #define elf_backend_plt_readonly 1 | |
4415 | #define elf_backend_want_plt_sym 0 | |
4416 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE*3) | |
b491616a | 4417 | #define elf_backend_rela_normal 1 |
70256ad8 AJ |
4418 | |
4419 | #define elf_info_to_howto elf64_x86_64_info_to_howto | |
70256ad8 | 4420 | |
70256ad8 AJ |
4421 | #define bfd_elf64_bfd_link_hash_table_create \ |
4422 | elf64_x86_64_link_hash_table_create | |
c25bc9fc L |
4423 | #define bfd_elf64_bfd_link_hash_table_free \ |
4424 | elf64_x86_64_link_hash_table_free | |
407443a3 | 4425 | #define bfd_elf64_bfd_reloc_type_lookup elf64_x86_64_reloc_type_lookup |
157090f7 AM |
4426 | #define bfd_elf64_bfd_reloc_name_lookup \ |
4427 | elf64_x86_64_reloc_name_lookup | |
70256ad8 AJ |
4428 | |
4429 | #define elf_backend_adjust_dynamic_symbol elf64_x86_64_adjust_dynamic_symbol | |
13285a1b | 4430 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
70256ad8 | 4431 | #define elf_backend_check_relocs elf64_x86_64_check_relocs |
c434dee6 AJ |
4432 | #define elf_backend_copy_indirect_symbol elf64_x86_64_copy_indirect_symbol |
4433 | #define elf_backend_create_dynamic_sections elf64_x86_64_create_dynamic_sections | |
4434 | #define elf_backend_finish_dynamic_sections elf64_x86_64_finish_dynamic_sections | |
70256ad8 AJ |
4435 | #define elf_backend_finish_dynamic_symbol elf64_x86_64_finish_dynamic_symbol |
4436 | #define elf_backend_gc_mark_hook elf64_x86_64_gc_mark_hook | |
4437 | #define elf_backend_gc_sweep_hook elf64_x86_64_gc_sweep_hook | |
3bab7989 ML |
4438 | #define elf_backend_grok_prstatus elf64_x86_64_grok_prstatus |
4439 | #define elf_backend_grok_psinfo elf64_x86_64_grok_psinfo | |
c434dee6 | 4440 | #define elf_backend_reloc_type_class elf64_x86_64_reloc_type_class |
70256ad8 AJ |
4441 | #define elf_backend_relocate_section elf64_x86_64_relocate_section |
4442 | #define elf_backend_size_dynamic_sections elf64_x86_64_size_dynamic_sections | |
67a4f2b7 | 4443 | #define elf_backend_always_size_sections elf64_x86_64_always_size_sections |
74541ad4 | 4444 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
4c45e5c9 | 4445 | #define elf_backend_plt_sym_val elf64_x86_64_plt_sym_val |
407443a3 | 4446 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
bffbf940 | 4447 | #define bfd_elf64_mkobject elf64_x86_64_mkobject |
8d88c4ca | 4448 | |
d2b2c203 DJ |
4449 | #define elf_backend_section_from_shdr \ |
4450 | elf64_x86_64_section_from_shdr | |
4451 | ||
3b22753a L |
4452 | #define elf_backend_section_from_bfd_section \ |
4453 | elf64_x86_64_elf_section_from_bfd_section | |
4454 | #define elf_backend_add_symbol_hook \ | |
4455 | elf64_x86_64_add_symbol_hook | |
4456 | #define elf_backend_symbol_processing \ | |
4457 | elf64_x86_64_symbol_processing | |
4458 | #define elf_backend_common_section_index \ | |
4459 | elf64_x86_64_common_section_index | |
4460 | #define elf_backend_common_section \ | |
4461 | elf64_x86_64_common_section | |
4462 | #define elf_backend_common_definition \ | |
4463 | elf64_x86_64_common_definition | |
4464 | #define elf_backend_merge_symbol \ | |
4465 | elf64_x86_64_merge_symbol | |
4466 | #define elf_backend_special_sections \ | |
4467 | elf64_x86_64_special_sections | |
4468 | #define elf_backend_additional_program_headers \ | |
4469 | elf64_x86_64_additional_program_headers | |
fdc90cb4 JJ |
4470 | #define elf_backend_hash_symbol \ |
4471 | elf64_x86_64_hash_symbol | |
3b22753a | 4472 | |
d8045f23 NC |
4473 | #undef elf_backend_post_process_headers |
4474 | #define elf_backend_post_process_headers _bfd_elf_set_osabi | |
4475 | ||
8d88c4ca | 4476 | #include "elf64-target.h" |
9d7cbccd NC |
4477 | |
4478 | /* FreeBSD support. */ | |
4479 | ||
4480 | #undef TARGET_LITTLE_SYM | |
4481 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_freebsd_vec | |
4482 | #undef TARGET_LITTLE_NAME | |
4483 | #define TARGET_LITTLE_NAME "elf64-x86-64-freebsd" | |
4484 | ||
d1036acb L |
4485 | #undef ELF_OSABI |
4486 | #define ELF_OSABI ELFOSABI_FREEBSD | |
9d7cbccd | 4487 | |
9d7cbccd NC |
4488 | #undef elf64_bed |
4489 | #define elf64_bed elf64_x86_64_fbsd_bed | |
4490 | ||
4491 | #include "elf64-target.h" | |
8a9036a4 | 4492 | |
a6cc6b3b RO |
4493 | /* Solaris 2 support. */ |
4494 | ||
4495 | #undef TARGET_LITTLE_SYM | |
4496 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_sol2_vec | |
4497 | #undef TARGET_LITTLE_NAME | |
4498 | #define TARGET_LITTLE_NAME "elf64-x86-64-sol2" | |
4499 | ||
4500 | /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE | |
4501 | objects won't be recognized. */ | |
4502 | #undef ELF_OSABI | |
4503 | ||
4504 | #undef elf64_bed | |
4505 | #define elf64_bed elf64_x86_64_sol2_bed | |
4506 | ||
4507 | /* The Solaris 2 ABI requires a plt symbol on all platforms. | |
4508 | ||
4509 | Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output | |
4510 | File, p.63. */ | |
4511 | #undef elf_backend_want_plt_sym | |
4512 | #define elf_backend_want_plt_sym 1 | |
4513 | ||
4514 | #include "elf64-target.h" | |
4515 | ||
8a9036a4 L |
4516 | /* Intel L1OM support. */ |
4517 | ||
4518 | static bfd_boolean | |
4519 | elf64_l1om_elf_object_p (bfd *abfd) | |
4520 | { | |
4521 | /* Set the right machine number for an L1OM elf64 file. */ | |
4522 | bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om); | |
4523 | return TRUE; | |
4524 | } | |
4525 | ||
4526 | #undef TARGET_LITTLE_SYM | |
4527 | #define TARGET_LITTLE_SYM bfd_elf64_l1om_vec | |
4528 | #undef TARGET_LITTLE_NAME | |
4529 | #define TARGET_LITTLE_NAME "elf64-l1om" | |
4530 | #undef ELF_ARCH | |
4531 | #define ELF_ARCH bfd_arch_l1om | |
4532 | ||
4533 | #undef ELF_MACHINE_CODE | |
4534 | #define ELF_MACHINE_CODE EM_L1OM | |
4535 | ||
4536 | #undef ELF_OSABI | |
4537 | ||
4538 | #undef elf64_bed | |
4539 | #define elf64_bed elf64_l1om_bed | |
4540 | ||
4541 | #undef elf_backend_object_p | |
4542 | #define elf_backend_object_p elf64_l1om_elf_object_p | |
4543 | ||
4544 | #undef elf_backend_post_process_headers | |
4545 | ||
4546 | #include "elf64-target.h" | |
4547 | ||
4548 | /* FreeBSD L1OM support. */ | |
4549 | ||
4550 | #undef TARGET_LITTLE_SYM | |
4551 | #define TARGET_LITTLE_SYM bfd_elf64_l1om_freebsd_vec | |
4552 | #undef TARGET_LITTLE_NAME | |
4553 | #define TARGET_LITTLE_NAME "elf64-l1om-freebsd" | |
4554 | ||
4555 | #undef ELF_OSABI | |
4556 | #define ELF_OSABI ELFOSABI_FREEBSD | |
4557 | ||
4558 | #undef elf64_bed | |
4559 | #define elf64_bed elf64_l1om_fbsd_bed | |
4560 | ||
4561 | #undef elf_backend_post_process_headers | |
4562 | #define elf_backend_post_process_headers _bfd_elf_set_osabi | |
4563 | ||
4564 | #include "elf64-target.h" |