1 /* X86-64 specific support for ELF
2 Copyright (C) 2000-2021 Free Software Foundation, Inc.
3 Contributed by Jan Hubicka <jh@suse.cz>.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
22 #include "elfxx-x86.h"
24 #include "libiberty.h"
26 #include "opcode/i386.h"
27 #include "elf/x86-64.h"
34 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
35 #define MINUS_ONE (~ (bfd_vma) 0)
37 /* Since both 32-bit and 64-bit x86-64 encode relocation type in the
38 identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get
39 relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE
40 since they are the same. */
42 /* The relocation "howto" table. Order of fields:
43 type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow,
44 special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */
45 static reloc_howto_type x86_64_elf_howto_table
[] =
47 HOWTO(R_X86_64_NONE
, 0, 3, 0, false, 0, complain_overflow_dont
,
48 bfd_elf_generic_reloc
, "R_X86_64_NONE", false, 0x00000000, 0x00000000,
50 HOWTO(R_X86_64_64
, 0, 4, 64, false, 0, complain_overflow_bitfield
,
51 bfd_elf_generic_reloc
, "R_X86_64_64", false, MINUS_ONE
, MINUS_ONE
,
53 HOWTO(R_X86_64_PC32
, 0, 2, 32, true, 0, complain_overflow_signed
,
54 bfd_elf_generic_reloc
, "R_X86_64_PC32", false, 0xffffffff, 0xffffffff,
56 HOWTO(R_X86_64_GOT32
, 0, 2, 32, false, 0, complain_overflow_signed
,
57 bfd_elf_generic_reloc
, "R_X86_64_GOT32", false, 0xffffffff, 0xffffffff,
59 HOWTO(R_X86_64_PLT32
, 0, 2, 32, true, 0, complain_overflow_signed
,
60 bfd_elf_generic_reloc
, "R_X86_64_PLT32", false, 0xffffffff, 0xffffffff,
62 HOWTO(R_X86_64_COPY
, 0, 2, 32, false, 0, complain_overflow_bitfield
,
63 bfd_elf_generic_reloc
, "R_X86_64_COPY", false, 0xffffffff, 0xffffffff,
65 HOWTO(R_X86_64_GLOB_DAT
, 0, 4, 64, false, 0, complain_overflow_bitfield
,
66 bfd_elf_generic_reloc
, "R_X86_64_GLOB_DAT", false, MINUS_ONE
,
68 HOWTO(R_X86_64_JUMP_SLOT
, 0, 4, 64, false, 0, complain_overflow_bitfield
,
69 bfd_elf_generic_reloc
, "R_X86_64_JUMP_SLOT", false, MINUS_ONE
,
71 HOWTO(R_X86_64_RELATIVE
, 0, 4, 64, false, 0, complain_overflow_bitfield
,
72 bfd_elf_generic_reloc
, "R_X86_64_RELATIVE", false, MINUS_ONE
,
74 HOWTO(R_X86_64_GOTPCREL
, 0, 2, 32, true, 0, complain_overflow_signed
,
75 bfd_elf_generic_reloc
, "R_X86_64_GOTPCREL", false, 0xffffffff,
77 HOWTO(R_X86_64_32
, 0, 2, 32, false, 0, complain_overflow_unsigned
,
78 bfd_elf_generic_reloc
, "R_X86_64_32", false, 0xffffffff, 0xffffffff,
80 HOWTO(R_X86_64_32S
, 0, 2, 32, false, 0, complain_overflow_signed
,
81 bfd_elf_generic_reloc
, "R_X86_64_32S", false, 0xffffffff, 0xffffffff,
83 HOWTO(R_X86_64_16
, 0, 1, 16, false, 0, complain_overflow_bitfield
,
84 bfd_elf_generic_reloc
, "R_X86_64_16", false, 0xffff, 0xffff, false),
85 HOWTO(R_X86_64_PC16
,0, 1, 16, true, 0, complain_overflow_bitfield
,
86 bfd_elf_generic_reloc
, "R_X86_64_PC16", false, 0xffff, 0xffff, true),
87 HOWTO(R_X86_64_8
, 0, 0, 8, false, 0, complain_overflow_bitfield
,
88 bfd_elf_generic_reloc
, "R_X86_64_8", false, 0xff, 0xff, false),
89 HOWTO(R_X86_64_PC8
, 0, 0, 8, true, 0, complain_overflow_signed
,
90 bfd_elf_generic_reloc
, "R_X86_64_PC8", false, 0xff, 0xff, true),
91 HOWTO(R_X86_64_DTPMOD64
, 0, 4, 64, false, 0, complain_overflow_bitfield
,
92 bfd_elf_generic_reloc
, "R_X86_64_DTPMOD64", false, MINUS_ONE
,
94 HOWTO(R_X86_64_DTPOFF64
, 0, 4, 64, false, 0, complain_overflow_bitfield
,
95 bfd_elf_generic_reloc
, "R_X86_64_DTPOFF64", false, MINUS_ONE
,
97 HOWTO(R_X86_64_TPOFF64
, 0, 4, 64, false, 0, complain_overflow_bitfield
,
98 bfd_elf_generic_reloc
, "R_X86_64_TPOFF64", false, MINUS_ONE
,
100 HOWTO(R_X86_64_TLSGD
, 0, 2, 32, true, 0, complain_overflow_signed
,
101 bfd_elf_generic_reloc
, "R_X86_64_TLSGD", false, 0xffffffff,
103 HOWTO(R_X86_64_TLSLD
, 0, 2, 32, true, 0, complain_overflow_signed
,
104 bfd_elf_generic_reloc
, "R_X86_64_TLSLD", false, 0xffffffff,
106 HOWTO(R_X86_64_DTPOFF32
, 0, 2, 32, false, 0, complain_overflow_signed
,
107 bfd_elf_generic_reloc
, "R_X86_64_DTPOFF32", false, 0xffffffff,
109 HOWTO(R_X86_64_GOTTPOFF
, 0, 2, 32, true, 0, complain_overflow_signed
,
110 bfd_elf_generic_reloc
, "R_X86_64_GOTTPOFF", false, 0xffffffff,
112 HOWTO(R_X86_64_TPOFF32
, 0, 2, 32, false, 0, complain_overflow_signed
,
113 bfd_elf_generic_reloc
, "R_X86_64_TPOFF32", false, 0xffffffff,
115 HOWTO(R_X86_64_PC64
, 0, 4, 64, true, 0, complain_overflow_bitfield
,
116 bfd_elf_generic_reloc
, "R_X86_64_PC64", false, MINUS_ONE
, MINUS_ONE
,
118 HOWTO(R_X86_64_GOTOFF64
, 0, 4, 64, false, 0, complain_overflow_bitfield
,
119 bfd_elf_generic_reloc
, "R_X86_64_GOTOFF64",
120 false, MINUS_ONE
, MINUS_ONE
, false),
121 HOWTO(R_X86_64_GOTPC32
, 0, 2, 32, true, 0, complain_overflow_signed
,
122 bfd_elf_generic_reloc
, "R_X86_64_GOTPC32",
123 false, 0xffffffff, 0xffffffff, true),
124 HOWTO(R_X86_64_GOT64
, 0, 4, 64, false, 0, complain_overflow_signed
,
125 bfd_elf_generic_reloc
, "R_X86_64_GOT64", false, MINUS_ONE
, MINUS_ONE
,
127 HOWTO(R_X86_64_GOTPCREL64
, 0, 4, 64, true, 0, complain_overflow_signed
,
128 bfd_elf_generic_reloc
, "R_X86_64_GOTPCREL64", false, MINUS_ONE
,
130 HOWTO(R_X86_64_GOTPC64
, 0, 4, 64, true, 0, complain_overflow_signed
,
131 bfd_elf_generic_reloc
, "R_X86_64_GOTPC64",
132 false, MINUS_ONE
, MINUS_ONE
, true),
133 HOWTO(R_X86_64_GOTPLT64
, 0, 4, 64, false, 0, complain_overflow_signed
,
134 bfd_elf_generic_reloc
, "R_X86_64_GOTPLT64", false, MINUS_ONE
,
136 HOWTO(R_X86_64_PLTOFF64
, 0, 4, 64, false, 0, complain_overflow_signed
,
137 bfd_elf_generic_reloc
, "R_X86_64_PLTOFF64", false, MINUS_ONE
,
139 HOWTO(R_X86_64_SIZE32
, 0, 2, 32, false, 0, complain_overflow_unsigned
,
140 bfd_elf_generic_reloc
, "R_X86_64_SIZE32", false, 0xffffffff, 0xffffffff,
142 HOWTO(R_X86_64_SIZE64
, 0, 4, 64, false, 0, complain_overflow_unsigned
,
143 bfd_elf_generic_reloc
, "R_X86_64_SIZE64", false, MINUS_ONE
, MINUS_ONE
,
145 HOWTO(R_X86_64_GOTPC32_TLSDESC
, 0, 2, 32, true, 0,
146 complain_overflow_bitfield
, bfd_elf_generic_reloc
,
147 "R_X86_64_GOTPC32_TLSDESC",
148 false, 0xffffffff, 0xffffffff, true),
149 HOWTO(R_X86_64_TLSDESC_CALL
, 0, 0, 0, false, 0,
150 complain_overflow_dont
, bfd_elf_generic_reloc
,
151 "R_X86_64_TLSDESC_CALL",
153 HOWTO(R_X86_64_TLSDESC
, 0, 4, 64, false, 0,
154 complain_overflow_bitfield
, bfd_elf_generic_reloc
,
156 false, MINUS_ONE
, MINUS_ONE
, false),
157 HOWTO(R_X86_64_IRELATIVE
, 0, 4, 64, false, 0, complain_overflow_bitfield
,
158 bfd_elf_generic_reloc
, "R_X86_64_IRELATIVE", false, MINUS_ONE
,
160 HOWTO(R_X86_64_RELATIVE64
, 0, 4, 64, false, 0, complain_overflow_bitfield
,
161 bfd_elf_generic_reloc
, "R_X86_64_RELATIVE64", false, MINUS_ONE
,
163 HOWTO(R_X86_64_PC32_BND
, 0, 2, 32, true, 0, complain_overflow_signed
,
164 bfd_elf_generic_reloc
, "R_X86_64_PC32_BND", false, 0xffffffff, 0xffffffff,
166 HOWTO(R_X86_64_PLT32_BND
, 0, 2, 32, true, 0, complain_overflow_signed
,
167 bfd_elf_generic_reloc
, "R_X86_64_PLT32_BND", false, 0xffffffff, 0xffffffff,
169 HOWTO(R_X86_64_GOTPCRELX
, 0, 2, 32, true, 0, complain_overflow_signed
,
170 bfd_elf_generic_reloc
, "R_X86_64_GOTPCRELX", false, 0xffffffff,
172 HOWTO(R_X86_64_REX_GOTPCRELX
, 0, 2, 32, true, 0, complain_overflow_signed
,
173 bfd_elf_generic_reloc
, "R_X86_64_REX_GOTPCRELX", false, 0xffffffff,
176 /* We have a gap in the reloc numbers here.
177 R_X86_64_standard counts the number up to this point, and
178 R_X86_64_vt_offset is the value to subtract from a reloc type of
179 R_X86_64_GNU_VT* to form an index into this table. */
180 #define R_X86_64_standard (R_X86_64_REX_GOTPCRELX + 1)
181 #define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)
183 /* GNU extension to record C++ vtable hierarchy. */
184 HOWTO (R_X86_64_GNU_VTINHERIT
, 0, 4, 0, false, 0, complain_overflow_dont
,
185 NULL
, "R_X86_64_GNU_VTINHERIT", false, 0, 0, false),
187 /* GNU extension to record C++ vtable member usage. */
188 HOWTO (R_X86_64_GNU_VTENTRY
, 0, 4, 0, false, 0, complain_overflow_dont
,
189 _bfd_elf_rel_vtable_reloc_fn
, "R_X86_64_GNU_VTENTRY", false, 0, 0,
192 /* Use complain_overflow_bitfield on R_X86_64_32 for x32. */
193 HOWTO(R_X86_64_32
, 0, 2, 32, false, 0, complain_overflow_bitfield
,
194 bfd_elf_generic_reloc
, "R_X86_64_32", false, 0xffffffff, 0xffffffff,
198 #define X86_PCREL_TYPE_P(TYPE) \
199 ( ((TYPE) == R_X86_64_PC8) \
200 || ((TYPE) == R_X86_64_PC16) \
201 || ((TYPE) == R_X86_64_PC32) \
202 || ((TYPE) == R_X86_64_PC32_BND) \
203 || ((TYPE) == R_X86_64_PC64))
205 #define X86_SIZE_TYPE_P(TYPE) \
206 ((TYPE) == R_X86_64_SIZE32 || (TYPE) == R_X86_64_SIZE64)
208 /* Map BFD relocs to the x86_64 elf relocs. */
211 bfd_reloc_code_real_type bfd_reloc_val
;
212 unsigned char elf_reloc_val
;
215 static const struct elf_reloc_map x86_64_reloc_map
[] =
217 { BFD_RELOC_NONE
, R_X86_64_NONE
, },
218 { BFD_RELOC_64
, R_X86_64_64
, },
219 { BFD_RELOC_32_PCREL
, R_X86_64_PC32
, },
220 { BFD_RELOC_X86_64_GOT32
, R_X86_64_GOT32
,},
221 { BFD_RELOC_X86_64_PLT32
, R_X86_64_PLT32
,},
222 { BFD_RELOC_X86_64_COPY
, R_X86_64_COPY
, },
223 { BFD_RELOC_X86_64_GLOB_DAT
, R_X86_64_GLOB_DAT
, },
224 { BFD_RELOC_X86_64_JUMP_SLOT
, R_X86_64_JUMP_SLOT
, },
225 { BFD_RELOC_X86_64_RELATIVE
, R_X86_64_RELATIVE
, },
226 { BFD_RELOC_X86_64_GOTPCREL
, R_X86_64_GOTPCREL
, },
227 { BFD_RELOC_32
, R_X86_64_32
, },
228 { BFD_RELOC_X86_64_32S
, R_X86_64_32S
, },
229 { BFD_RELOC_16
, R_X86_64_16
, },
230 { BFD_RELOC_16_PCREL
, R_X86_64_PC16
, },
231 { BFD_RELOC_8
, R_X86_64_8
, },
232 { BFD_RELOC_8_PCREL
, R_X86_64_PC8
, },
233 { BFD_RELOC_X86_64_DTPMOD64
, R_X86_64_DTPMOD64
, },
234 { BFD_RELOC_X86_64_DTPOFF64
, R_X86_64_DTPOFF64
, },
235 { BFD_RELOC_X86_64_TPOFF64
, R_X86_64_TPOFF64
, },
236 { BFD_RELOC_X86_64_TLSGD
, R_X86_64_TLSGD
, },
237 { BFD_RELOC_X86_64_TLSLD
, R_X86_64_TLSLD
, },
238 { BFD_RELOC_X86_64_DTPOFF32
, R_X86_64_DTPOFF32
, },
239 { BFD_RELOC_X86_64_GOTTPOFF
, R_X86_64_GOTTPOFF
, },
240 { BFD_RELOC_X86_64_TPOFF32
, R_X86_64_TPOFF32
, },
241 { BFD_RELOC_64_PCREL
, R_X86_64_PC64
, },
242 { BFD_RELOC_X86_64_GOTOFF64
, R_X86_64_GOTOFF64
, },
243 { BFD_RELOC_X86_64_GOTPC32
, R_X86_64_GOTPC32
, },
244 { BFD_RELOC_X86_64_GOT64
, R_X86_64_GOT64
, },
245 { BFD_RELOC_X86_64_GOTPCREL64
,R_X86_64_GOTPCREL64
, },
246 { BFD_RELOC_X86_64_GOTPC64
, R_X86_64_GOTPC64
, },
247 { BFD_RELOC_X86_64_GOTPLT64
, R_X86_64_GOTPLT64
, },
248 { BFD_RELOC_X86_64_PLTOFF64
, R_X86_64_PLTOFF64
, },
249 { BFD_RELOC_SIZE32
, R_X86_64_SIZE32
, },
250 { BFD_RELOC_SIZE64
, R_X86_64_SIZE64
, },
251 { BFD_RELOC_X86_64_GOTPC32_TLSDESC
, R_X86_64_GOTPC32_TLSDESC
, },
252 { BFD_RELOC_X86_64_TLSDESC_CALL
, R_X86_64_TLSDESC_CALL
, },
253 { BFD_RELOC_X86_64_TLSDESC
, R_X86_64_TLSDESC
, },
254 { BFD_RELOC_X86_64_IRELATIVE
, R_X86_64_IRELATIVE
, },
255 { BFD_RELOC_X86_64_PC32_BND
, R_X86_64_PC32_BND
, },
256 { BFD_RELOC_X86_64_PLT32_BND
, R_X86_64_PLT32_BND
, },
257 { BFD_RELOC_X86_64_GOTPCRELX
, R_X86_64_GOTPCRELX
, },
258 { BFD_RELOC_X86_64_REX_GOTPCRELX
, R_X86_64_REX_GOTPCRELX
, },
259 { BFD_RELOC_VTABLE_INHERIT
, R_X86_64_GNU_VTINHERIT
, },
260 { BFD_RELOC_VTABLE_ENTRY
, R_X86_64_GNU_VTENTRY
, },
263 static reloc_howto_type
*
264 elf_x86_64_rtype_to_howto (bfd
*abfd
, unsigned r_type
)
268 if (r_type
== (unsigned int) R_X86_64_32
)
273 i
= ARRAY_SIZE (x86_64_elf_howto_table
) - 1;
275 else if (r_type
< (unsigned int) R_X86_64_GNU_VTINHERIT
276 || r_type
>= (unsigned int) R_X86_64_max
)
278 if (r_type
>= (unsigned int) R_X86_64_standard
)
280 /* xgettext:c-format */
281 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
283 bfd_set_error (bfd_error_bad_value
);
289 i
= r_type
- (unsigned int) R_X86_64_vt_offset
;
290 BFD_ASSERT (x86_64_elf_howto_table
[i
].type
== r_type
);
291 return &x86_64_elf_howto_table
[i
];
294 /* Given a BFD reloc type, return a HOWTO structure. */
295 static reloc_howto_type
*
296 elf_x86_64_reloc_type_lookup (bfd
*abfd
,
297 bfd_reloc_code_real_type code
)
301 for (i
= 0; i
< sizeof (x86_64_reloc_map
) / sizeof (struct elf_reloc_map
);
304 if (x86_64_reloc_map
[i
].bfd_reloc_val
== code
)
305 return elf_x86_64_rtype_to_howto (abfd
,
306 x86_64_reloc_map
[i
].elf_reloc_val
);
311 static reloc_howto_type
*
312 elf_x86_64_reloc_name_lookup (bfd
*abfd
,
317 if (!ABI_64_P (abfd
) && strcasecmp (r_name
, "R_X86_64_32") == 0)
319 /* Get x32 R_X86_64_32. */
320 reloc_howto_type
*reloc
321 = &x86_64_elf_howto_table
[ARRAY_SIZE (x86_64_elf_howto_table
) - 1];
322 BFD_ASSERT (reloc
->type
== (unsigned int) R_X86_64_32
);
326 for (i
= 0; i
< ARRAY_SIZE (x86_64_elf_howto_table
); i
++)
327 if (x86_64_elf_howto_table
[i
].name
!= NULL
328 && strcasecmp (x86_64_elf_howto_table
[i
].name
, r_name
) == 0)
329 return &x86_64_elf_howto_table
[i
];
334 /* Given an x86_64 ELF reloc type, fill in an arelent structure. */
337 elf_x86_64_info_to_howto (bfd
*abfd
, arelent
*cache_ptr
,
338 Elf_Internal_Rela
*dst
)
342 r_type
= ELF32_R_TYPE (dst
->r_info
);
343 cache_ptr
->howto
= elf_x86_64_rtype_to_howto (abfd
, r_type
);
344 if (cache_ptr
->howto
== NULL
)
346 BFD_ASSERT (r_type
== cache_ptr
->howto
->type
|| cache_ptr
->howto
->type
== R_X86_64_NONE
);
350 /* Support for core dump NOTE sections. */
352 elf_x86_64_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
357 switch (note
->descsz
)
362 case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */
364 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
367 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
375 case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */
377 elf_tdata (abfd
)->core
->signal
378 = bfd_get_16 (abfd
, note
->descdata
+ 12);
381 elf_tdata (abfd
)->core
->lwpid
382 = bfd_get_32 (abfd
, note
->descdata
+ 32);
391 /* Make a ".reg/999" section. */
392 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
393 size
, note
->descpos
+ offset
);
397 elf_x86_64_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
399 switch (note
->descsz
)
404 case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */
405 elf_tdata (abfd
)->core
->pid
406 = bfd_get_32 (abfd
, note
->descdata
+ 12);
407 elf_tdata (abfd
)->core
->program
408 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
409 elf_tdata (abfd
)->core
->command
410 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
413 case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */
414 elf_tdata (abfd
)->core
->pid
415 = bfd_get_32 (abfd
, note
->descdata
+ 24);
416 elf_tdata (abfd
)->core
->program
417 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
418 elf_tdata (abfd
)->core
->command
419 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
422 /* Note that for some reason, a spurious space is tacked
423 onto the end of the args in some (at least one anyway)
424 implementations, so strip it off if it exists. */
427 char *command
= elf_tdata (abfd
)->core
->command
;
428 int n
= strlen (command
);
430 if (0 < n
&& command
[n
- 1] == ' ')
431 command
[n
- 1] = '\0';
438 # if GCC_VERSION >= 8000
439 # pragma GCC diagnostic push
440 # pragma GCC diagnostic ignored "-Wstringop-truncation"
443 elf_x86_64_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
,
446 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
448 const char *fname
, *psargs
;
459 va_start (ap
, note_type
);
460 fname
= va_arg (ap
, const char *);
461 psargs
= va_arg (ap
, const char *);
464 if (bed
->s
->elfclass
== ELFCLASS32
)
467 memset (&data
, 0, sizeof (data
));
468 strncpy (data
.pr_fname
, fname
, sizeof (data
.pr_fname
));
469 strncpy (data
.pr_psargs
, psargs
, sizeof (data
.pr_psargs
));
470 return elfcore_write_note (abfd
, buf
, bufsiz
, "CORE", note_type
,
471 &data
, sizeof (data
));
476 memset (&data
, 0, sizeof (data
));
477 strncpy (data
.pr_fname
, fname
, sizeof (data
.pr_fname
));
478 strncpy (data
.pr_psargs
, psargs
, sizeof (data
.pr_psargs
));
479 return elfcore_write_note (abfd
, buf
, bufsiz
, "CORE", note_type
,
480 &data
, sizeof (data
));
485 va_start (ap
, note_type
);
486 pid
= va_arg (ap
, long);
487 cursig
= va_arg (ap
, int);
488 gregs
= va_arg (ap
, const void *);
491 if (bed
->s
->elfclass
== ELFCLASS32
)
493 if (bed
->elf_machine_code
== EM_X86_64
)
495 prstatusx32_t prstat
;
496 memset (&prstat
, 0, sizeof (prstat
));
498 prstat
.pr_cursig
= cursig
;
499 memcpy (&prstat
.pr_reg
, gregs
, sizeof (prstat
.pr_reg
));
500 return elfcore_write_note (abfd
, buf
, bufsiz
, "CORE", note_type
,
501 &prstat
, sizeof (prstat
));
506 memset (&prstat
, 0, sizeof (prstat
));
508 prstat
.pr_cursig
= cursig
;
509 memcpy (&prstat
.pr_reg
, gregs
, sizeof (prstat
.pr_reg
));
510 return elfcore_write_note (abfd
, buf
, bufsiz
, "CORE", note_type
,
511 &prstat
, sizeof (prstat
));
517 memset (&prstat
, 0, sizeof (prstat
));
519 prstat
.pr_cursig
= cursig
;
520 memcpy (&prstat
.pr_reg
, gregs
, sizeof (prstat
.pr_reg
));
521 return elfcore_write_note (abfd
, buf
, bufsiz
, "CORE", note_type
,
522 &prstat
, sizeof (prstat
));
527 # if GCC_VERSION >= 8000
528 # pragma GCC diagnostic pop
532 /* Functions for the x86-64 ELF linker. */
534 /* The size in bytes of an entry in the global offset table. */
536 #define GOT_ENTRY_SIZE 8
538 /* The size in bytes of an entry in the lazy procedure linkage table. */
540 #define LAZY_PLT_ENTRY_SIZE 16
542 /* The size in bytes of an entry in the non-lazy procedure linkage
545 #define NON_LAZY_PLT_ENTRY_SIZE 8
547 /* The first entry in a lazy procedure linkage table looks like this.
548 See the SVR4 ABI i386 supplement and the x86-64 ABI to see how this
551 static const bfd_byte elf_x86_64_lazy_plt0_entry
[LAZY_PLT_ENTRY_SIZE
] =
553 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
554 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */
555 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
558 /* Subsequent entries in a lazy procedure linkage table look like this. */
560 static const bfd_byte elf_x86_64_lazy_plt_entry
[LAZY_PLT_ENTRY_SIZE
] =
562 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
563 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
564 0x68, /* pushq immediate */
565 0, 0, 0, 0, /* replaced with index into relocation table. */
566 0xe9, /* jmp relative */
567 0, 0, 0, 0 /* replaced with offset to start of .plt0. */
570 /* The first entry in a lazy procedure linkage table with BND prefix
573 static const bfd_byte elf_x86_64_lazy_bnd_plt0_entry
[LAZY_PLT_ENTRY_SIZE
] =
575 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
576 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */
577 0x0f, 0x1f, 0 /* nopl (%rax) */
580 /* Subsequent entries for branches with BND prefx in a lazy procedure
581 linkage table look like this. */
583 static const bfd_byte elf_x86_64_lazy_bnd_plt_entry
[LAZY_PLT_ENTRY_SIZE
] =
585 0x68, 0, 0, 0, 0, /* pushq immediate */
586 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
587 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */
590 /* The first entry in the IBT-enabled lazy procedure linkage table is the
591 the same as the lazy PLT with BND prefix so that bound registers are
592 preserved when control is passed to dynamic linker. Subsequent
593 entries for a IBT-enabled lazy procedure linkage table look like
596 static const bfd_byte elf_x86_64_lazy_ibt_plt_entry
[LAZY_PLT_ENTRY_SIZE
] =
598 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
599 0x68, 0, 0, 0, 0, /* pushq immediate */
600 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
604 /* The first entry in the x32 IBT-enabled lazy procedure linkage table
605 is the same as the normal lazy PLT. Subsequent entries for an
606 x32 IBT-enabled lazy procedure linkage table look like this. */
608 static const bfd_byte elf_x32_lazy_ibt_plt_entry
[LAZY_PLT_ENTRY_SIZE
] =
610 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
611 0x68, 0, 0, 0, 0, /* pushq immediate */
612 0xe9, 0, 0, 0, 0, /* jmpq relative */
613 0x66, 0x90 /* xchg %ax,%ax */
616 /* Entries in the non-lazey procedure linkage table look like this. */
618 static const bfd_byte elf_x86_64_non_lazy_plt_entry
[NON_LAZY_PLT_ENTRY_SIZE
] =
620 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
621 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
622 0x66, 0x90 /* xchg %ax,%ax */
625 /* Entries for branches with BND prefix in the non-lazey procedure
626 linkage table look like this. */
628 static const bfd_byte elf_x86_64_non_lazy_bnd_plt_entry
[NON_LAZY_PLT_ENTRY_SIZE
] =
630 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
631 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
635 /* Entries for branches with IBT-enabled in the non-lazey procedure
636 linkage table look like this. They have the same size as the lazy
639 static const bfd_byte elf_x86_64_non_lazy_ibt_plt_entry
[LAZY_PLT_ENTRY_SIZE
] =
641 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
642 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
643 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
644 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopl 0x0(%rax,%rax,1) */
647 /* Entries for branches with IBT-enabled in the x32 non-lazey procedure
648 linkage table look like this. They have the same size as the lazy
651 static const bfd_byte elf_x32_non_lazy_ibt_plt_entry
[LAZY_PLT_ENTRY_SIZE
] =
653 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
654 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
655 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
656 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
659 /* The TLSDESC entry in a lazy procedure linkage table. */
660 static const bfd_byte elf_x86_64_tlsdesc_plt_entry
[LAZY_PLT_ENTRY_SIZE
] =
662 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
663 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
664 0xff, 0x25, 16, 0, 0, 0 /* jmpq *GOT+TDG(%rip) */
667 /* .eh_frame covering the lazy .plt section. */
669 static const bfd_byte elf_x86_64_eh_frame_lazy_plt
[] =
671 PLT_CIE_LENGTH
, 0, 0, 0, /* CIE length */
672 0, 0, 0, 0, /* CIE ID */
674 'z', 'R', 0, /* Augmentation string */
675 1, /* Code alignment factor */
676 0x78, /* Data alignment factor */
677 16, /* Return address column */
678 1, /* Augmentation size */
679 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding */
680 DW_CFA_def_cfa
, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
681 DW_CFA_offset
+ 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
682 DW_CFA_nop
, DW_CFA_nop
,
684 PLT_FDE_LENGTH
, 0, 0, 0, /* FDE length */
685 PLT_CIE_LENGTH
+ 8, 0, 0, 0, /* CIE pointer */
686 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
687 0, 0, 0, 0, /* .plt size goes here */
688 0, /* Augmentation size */
689 DW_CFA_def_cfa_offset
, 16, /* DW_CFA_def_cfa_offset: 16 */
690 DW_CFA_advance_loc
+ 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
691 DW_CFA_def_cfa_offset
, 24, /* DW_CFA_def_cfa_offset: 24 */
692 DW_CFA_advance_loc
+ 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
693 DW_CFA_def_cfa_expression
, /* DW_CFA_def_cfa_expression */
694 11, /* Block length */
695 DW_OP_breg7
, 8, /* DW_OP_breg7 (rsp): 8 */
696 DW_OP_breg16
, 0, /* DW_OP_breg16 (rip): 0 */
697 DW_OP_lit15
, DW_OP_and
, DW_OP_lit11
, DW_OP_ge
,
698 DW_OP_lit3
, DW_OP_shl
, DW_OP_plus
,
699 DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
702 /* .eh_frame covering the lazy BND .plt section. */
704 static const bfd_byte elf_x86_64_eh_frame_lazy_bnd_plt
[] =
706 PLT_CIE_LENGTH
, 0, 0, 0, /* CIE length */
707 0, 0, 0, 0, /* CIE ID */
709 'z', 'R', 0, /* Augmentation string */
710 1, /* Code alignment factor */
711 0x78, /* Data alignment factor */
712 16, /* Return address column */
713 1, /* Augmentation size */
714 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding */
715 DW_CFA_def_cfa
, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
716 DW_CFA_offset
+ 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
717 DW_CFA_nop
, DW_CFA_nop
,
719 PLT_FDE_LENGTH
, 0, 0, 0, /* FDE length */
720 PLT_CIE_LENGTH
+ 8, 0, 0, 0, /* CIE pointer */
721 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
722 0, 0, 0, 0, /* .plt size goes here */
723 0, /* Augmentation size */
724 DW_CFA_def_cfa_offset
, 16, /* DW_CFA_def_cfa_offset: 16 */
725 DW_CFA_advance_loc
+ 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
726 DW_CFA_def_cfa_offset
, 24, /* DW_CFA_def_cfa_offset: 24 */
727 DW_CFA_advance_loc
+ 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
728 DW_CFA_def_cfa_expression
, /* DW_CFA_def_cfa_expression */
729 11, /* Block length */
730 DW_OP_breg7
, 8, /* DW_OP_breg7 (rsp): 8 */
731 DW_OP_breg16
, 0, /* DW_OP_breg16 (rip): 0 */
732 DW_OP_lit15
, DW_OP_and
, DW_OP_lit5
, DW_OP_ge
,
733 DW_OP_lit3
, DW_OP_shl
, DW_OP_plus
,
734 DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
737 /* .eh_frame covering the lazy .plt section with IBT-enabled. */
739 static const bfd_byte elf_x86_64_eh_frame_lazy_ibt_plt
[] =
741 PLT_CIE_LENGTH
, 0, 0, 0, /* CIE length */
742 0, 0, 0, 0, /* CIE ID */
744 'z', 'R', 0, /* Augmentation string */
745 1, /* Code alignment factor */
746 0x78, /* Data alignment factor */
747 16, /* Return address column */
748 1, /* Augmentation size */
749 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding */
750 DW_CFA_def_cfa
, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
751 DW_CFA_offset
+ 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
752 DW_CFA_nop
, DW_CFA_nop
,
754 PLT_FDE_LENGTH
, 0, 0, 0, /* FDE length */
755 PLT_CIE_LENGTH
+ 8, 0, 0, 0, /* CIE pointer */
756 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
757 0, 0, 0, 0, /* .plt size goes here */
758 0, /* Augmentation size */
759 DW_CFA_def_cfa_offset
, 16, /* DW_CFA_def_cfa_offset: 16 */
760 DW_CFA_advance_loc
+ 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
761 DW_CFA_def_cfa_offset
, 24, /* DW_CFA_def_cfa_offset: 24 */
762 DW_CFA_advance_loc
+ 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
763 DW_CFA_def_cfa_expression
, /* DW_CFA_def_cfa_expression */
764 11, /* Block length */
765 DW_OP_breg7
, 8, /* DW_OP_breg7 (rsp): 8 */
766 DW_OP_breg16
, 0, /* DW_OP_breg16 (rip): 0 */
767 DW_OP_lit15
, DW_OP_and
, DW_OP_lit10
, DW_OP_ge
,
768 DW_OP_lit3
, DW_OP_shl
, DW_OP_plus
,
769 DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
772 /* .eh_frame covering the x32 lazy .plt section with IBT-enabled. */
774 static const bfd_byte elf_x32_eh_frame_lazy_ibt_plt
[] =
776 PLT_CIE_LENGTH
, 0, 0, 0, /* CIE length */
777 0, 0, 0, 0, /* CIE ID */
779 'z', 'R', 0, /* Augmentation string */
780 1, /* Code alignment factor */
781 0x78, /* Data alignment factor */
782 16, /* Return address column */
783 1, /* Augmentation size */
784 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding */
785 DW_CFA_def_cfa
, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
786 DW_CFA_offset
+ 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
787 DW_CFA_nop
, DW_CFA_nop
,
789 PLT_FDE_LENGTH
, 0, 0, 0, /* FDE length */
790 PLT_CIE_LENGTH
+ 8, 0, 0, 0, /* CIE pointer */
791 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
792 0, 0, 0, 0, /* .plt size goes here */
793 0, /* Augmentation size */
794 DW_CFA_def_cfa_offset
, 16, /* DW_CFA_def_cfa_offset: 16 */
795 DW_CFA_advance_loc
+ 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
796 DW_CFA_def_cfa_offset
, 24, /* DW_CFA_def_cfa_offset: 24 */
797 DW_CFA_advance_loc
+ 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
798 DW_CFA_def_cfa_expression
, /* DW_CFA_def_cfa_expression */
799 11, /* Block length */
800 DW_OP_breg7
, 8, /* DW_OP_breg7 (rsp): 8 */
801 DW_OP_breg16
, 0, /* DW_OP_breg16 (rip): 0 */
802 DW_OP_lit15
, DW_OP_and
, DW_OP_lit9
, DW_OP_ge
,
803 DW_OP_lit3
, DW_OP_shl
, DW_OP_plus
,
804 DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
807 /* .eh_frame covering the non-lazy .plt section. */
809 static const bfd_byte elf_x86_64_eh_frame_non_lazy_plt
[] =
811 #define PLT_GOT_FDE_LENGTH 20
812 PLT_CIE_LENGTH
, 0, 0, 0, /* CIE length */
813 0, 0, 0, 0, /* CIE ID */
815 'z', 'R', 0, /* Augmentation string */
816 1, /* Code alignment factor */
817 0x78, /* Data alignment factor */
818 16, /* Return address column */
819 1, /* Augmentation size */
820 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding */
821 DW_CFA_def_cfa
, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
822 DW_CFA_offset
+ 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
823 DW_CFA_nop
, DW_CFA_nop
,
825 PLT_GOT_FDE_LENGTH
, 0, 0, 0, /* FDE length */
826 PLT_CIE_LENGTH
+ 8, 0, 0, 0, /* CIE pointer */
827 0, 0, 0, 0, /* the start of non-lazy .plt goes here */
828 0, 0, 0, 0, /* non-lazy .plt size goes here */
829 0, /* Augmentation size */
830 DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
,
831 DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
834 /* These are the standard parameters. */
835 static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_plt
=
837 elf_x86_64_lazy_plt0_entry
, /* plt0_entry */
838 LAZY_PLT_ENTRY_SIZE
, /* plt0_entry_size */
839 elf_x86_64_lazy_plt_entry
, /* plt_entry */
840 LAZY_PLT_ENTRY_SIZE
, /* plt_entry_size */
841 elf_x86_64_tlsdesc_plt_entry
, /* plt_tlsdesc_entry */
842 LAZY_PLT_ENTRY_SIZE
, /* plt_tlsdesc_entry_size */
843 6, /* plt_tlsdesc_got1_offset */
844 12, /* plt_tlsdesc_got2_offset */
845 10, /* plt_tlsdesc_got1_insn_end */
846 16, /* plt_tlsdesc_got2_insn_end */
847 2, /* plt0_got1_offset */
848 8, /* plt0_got2_offset */
849 12, /* plt0_got2_insn_end */
850 2, /* plt_got_offset */
851 7, /* plt_reloc_offset */
852 12, /* plt_plt_offset */
853 6, /* plt_got_insn_size */
854 LAZY_PLT_ENTRY_SIZE
, /* plt_plt_insn_end */
855 6, /* plt_lazy_offset */
856 elf_x86_64_lazy_plt0_entry
, /* pic_plt0_entry */
857 elf_x86_64_lazy_plt_entry
, /* pic_plt_entry */
858 elf_x86_64_eh_frame_lazy_plt
, /* eh_frame_plt */
859 sizeof (elf_x86_64_eh_frame_lazy_plt
) /* eh_frame_plt_size */
862 static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_plt
=
864 elf_x86_64_non_lazy_plt_entry
, /* plt_entry */
865 elf_x86_64_non_lazy_plt_entry
, /* pic_plt_entry */
866 NON_LAZY_PLT_ENTRY_SIZE
, /* plt_entry_size */
867 2, /* plt_got_offset */
868 6, /* plt_got_insn_size */
869 elf_x86_64_eh_frame_non_lazy_plt
, /* eh_frame_plt */
870 sizeof (elf_x86_64_eh_frame_non_lazy_plt
) /* eh_frame_plt_size */
873 static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_bnd_plt
=
875 elf_x86_64_lazy_bnd_plt0_entry
, /* plt0_entry */
876 LAZY_PLT_ENTRY_SIZE
, /* plt0_entry_size */
877 elf_x86_64_lazy_bnd_plt_entry
, /* plt_entry */
878 LAZY_PLT_ENTRY_SIZE
, /* plt_entry_size */
879 elf_x86_64_tlsdesc_plt_entry
, /* plt_tlsdesc_entry */
880 LAZY_PLT_ENTRY_SIZE
, /* plt_tlsdesc_entry_size */
881 6, /* plt_tlsdesc_got1_offset */
882 12, /* plt_tlsdesc_got2_offset */
883 10, /* plt_tlsdesc_got1_insn_end */
884 16, /* plt_tlsdesc_got2_insn_end */
885 2, /* plt0_got1_offset */
886 1+8, /* plt0_got2_offset */
887 1+12, /* plt0_got2_insn_end */
888 1+2, /* plt_got_offset */
889 1, /* plt_reloc_offset */
890 7, /* plt_plt_offset */
891 1+6, /* plt_got_insn_size */
892 11, /* plt_plt_insn_end */
893 0, /* plt_lazy_offset */
894 elf_x86_64_lazy_bnd_plt0_entry
, /* pic_plt0_entry */
895 elf_x86_64_lazy_bnd_plt_entry
, /* pic_plt_entry */
896 elf_x86_64_eh_frame_lazy_bnd_plt
, /* eh_frame_plt */
897 sizeof (elf_x86_64_eh_frame_lazy_bnd_plt
) /* eh_frame_plt_size */
900 static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_bnd_plt
=
902 elf_x86_64_non_lazy_bnd_plt_entry
, /* plt_entry */
903 elf_x86_64_non_lazy_bnd_plt_entry
, /* pic_plt_entry */
904 NON_LAZY_PLT_ENTRY_SIZE
, /* plt_entry_size */
905 1+2, /* plt_got_offset */
906 1+6, /* plt_got_insn_size */
907 elf_x86_64_eh_frame_non_lazy_plt
, /* eh_frame_plt */
908 sizeof (elf_x86_64_eh_frame_non_lazy_plt
) /* eh_frame_plt_size */
911 static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_ibt_plt
=
913 elf_x86_64_lazy_bnd_plt0_entry
, /* plt0_entry */
914 LAZY_PLT_ENTRY_SIZE
, /* plt0_entry_size */
915 elf_x86_64_lazy_ibt_plt_entry
, /* plt_entry */
916 LAZY_PLT_ENTRY_SIZE
, /* plt_entry_size */
917 elf_x86_64_tlsdesc_plt_entry
, /* plt_tlsdesc_entry */
918 LAZY_PLT_ENTRY_SIZE
, /* plt_tlsdesc_entry_size */
919 6, /* plt_tlsdesc_got1_offset */
920 12, /* plt_tlsdesc_got2_offset */
921 10, /* plt_tlsdesc_got1_insn_end */
922 16, /* plt_tlsdesc_got2_insn_end */
923 2, /* plt0_got1_offset */
924 1+8, /* plt0_got2_offset */
925 1+12, /* plt0_got2_insn_end */
926 4+1+2, /* plt_got_offset */
927 4+1, /* plt_reloc_offset */
928 4+1+6, /* plt_plt_offset */
929 4+1+6, /* plt_got_insn_size */
930 4+1+5+5, /* plt_plt_insn_end */
931 0, /* plt_lazy_offset */
932 elf_x86_64_lazy_bnd_plt0_entry
, /* pic_plt0_entry */
933 elf_x86_64_lazy_ibt_plt_entry
, /* pic_plt_entry */
934 elf_x86_64_eh_frame_lazy_ibt_plt
, /* eh_frame_plt */
935 sizeof (elf_x86_64_eh_frame_lazy_ibt_plt
) /* eh_frame_plt_size */
938 static const struct elf_x86_lazy_plt_layout elf_x32_lazy_ibt_plt
=
940 elf_x86_64_lazy_plt0_entry
, /* plt0_entry */
941 LAZY_PLT_ENTRY_SIZE
, /* plt0_entry_size */
942 elf_x32_lazy_ibt_plt_entry
, /* plt_entry */
943 LAZY_PLT_ENTRY_SIZE
, /* plt_entry_size */
944 elf_x86_64_tlsdesc_plt_entry
, /* plt_tlsdesc_entry */
945 LAZY_PLT_ENTRY_SIZE
, /* plt_tlsdesc_entry_size */
946 6, /* plt_tlsdesc_got1_offset */
947 12, /* plt_tlsdesc_got2_offset */
948 10, /* plt_tlsdesc_got1_insn_end */
949 16, /* plt_tlsdesc_got2_insn_end */
950 2, /* plt0_got1_offset */
951 8, /* plt0_got2_offset */
952 12, /* plt0_got2_insn_end */
953 4+2, /* plt_got_offset */
954 4+1, /* plt_reloc_offset */
955 4+6, /* plt_plt_offset */
956 4+6, /* plt_got_insn_size */
957 4+5+5, /* plt_plt_insn_end */
958 0, /* plt_lazy_offset */
959 elf_x86_64_lazy_plt0_entry
, /* pic_plt0_entry */
960 elf_x32_lazy_ibt_plt_entry
, /* pic_plt_entry */
961 elf_x32_eh_frame_lazy_ibt_plt
, /* eh_frame_plt */
962 sizeof (elf_x32_eh_frame_lazy_ibt_plt
) /* eh_frame_plt_size */
965 static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_ibt_plt
=
967 elf_x86_64_non_lazy_ibt_plt_entry
, /* plt_entry */
968 elf_x86_64_non_lazy_ibt_plt_entry
, /* pic_plt_entry */
969 LAZY_PLT_ENTRY_SIZE
, /* plt_entry_size */
970 4+1+2, /* plt_got_offset */
971 4+1+6, /* plt_got_insn_size */
972 elf_x86_64_eh_frame_non_lazy_plt
, /* eh_frame_plt */
973 sizeof (elf_x86_64_eh_frame_non_lazy_plt
) /* eh_frame_plt_size */
976 static const struct elf_x86_non_lazy_plt_layout elf_x32_non_lazy_ibt_plt
=
978 elf_x32_non_lazy_ibt_plt_entry
, /* plt_entry */
979 elf_x32_non_lazy_ibt_plt_entry
, /* pic_plt_entry */
980 LAZY_PLT_ENTRY_SIZE
, /* plt_entry_size */
981 4+2, /* plt_got_offset */
982 4+6, /* plt_got_insn_size */
983 elf_x86_64_eh_frame_non_lazy_plt
, /* eh_frame_plt */
984 sizeof (elf_x86_64_eh_frame_non_lazy_plt
) /* eh_frame_plt_size */
989 elf64_x86_64_elf_object_p (bfd
*abfd
)
991 /* Set the right machine number for an x86-64 elf64 file. */
992 bfd_default_set_arch_mach (abfd
, bfd_arch_i386
, bfd_mach_x86_64
);
997 elf32_x86_64_elf_object_p (bfd
*abfd
)
999 /* Set the right machine number for an x86-64 elf32 file. */
1000 bfd_default_set_arch_mach (abfd
, bfd_arch_i386
, bfd_mach_x64_32
);
1004 /* Return TRUE if the TLS access code sequence support transition
1008 elf_x86_64_check_tls_transition (bfd
*abfd
,
1009 struct bfd_link_info
*info
,
1012 Elf_Internal_Shdr
*symtab_hdr
,
1013 struct elf_link_hash_entry
**sym_hashes
,
1014 unsigned int r_type
,
1015 const Elf_Internal_Rela
*rel
,
1016 const Elf_Internal_Rela
*relend
)
1019 unsigned long r_symndx
;
1020 bool largepic
= false;
1021 struct elf_link_hash_entry
*h
;
1023 struct elf_x86_link_hash_table
*htab
;
1027 htab
= elf_x86_hash_table (info
, X86_64_ELF_DATA
);
1028 offset
= rel
->r_offset
;
1031 case R_X86_64_TLSGD
:
1032 case R_X86_64_TLSLD
:
1033 if ((rel
+ 1) >= relend
)
1036 if (r_type
== R_X86_64_TLSGD
)
1038 /* Check transition from GD access model. For 64bit, only
1039 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1040 .word 0x6666; rex64; call __tls_get_addr@PLT
1042 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1044 call *__tls_get_addr@GOTPCREL(%rip)
1045 which may be converted to
1046 addr32 call __tls_get_addr
1047 can transit to different access model. For 32bit, only
1048 leaq foo@tlsgd(%rip), %rdi
1049 .word 0x6666; rex64; call __tls_get_addr@PLT
1051 leaq foo@tlsgd(%rip), %rdi
1053 call *__tls_get_addr@GOTPCREL(%rip)
1054 which may be converted to
1055 addr32 call __tls_get_addr
1056 can transit to different access model. For largepic,
1058 leaq foo@tlsgd(%rip), %rdi
1059 movabsq $__tls_get_addr@pltoff, %rax
1063 leaq foo@tlsgd(%rip), %rdi
1064 movabsq $__tls_get_addr@pltoff, %rax
1068 static const unsigned char leaq
[] = { 0x66, 0x48, 0x8d, 0x3d };
1070 if ((offset
+ 12) > sec
->size
)
1073 call
= contents
+ offset
+ 4;
1075 || !((call
[1] == 0x48
1083 && call
[3] == 0xe8)))
1085 if (!ABI_64_P (abfd
)
1086 || (offset
+ 19) > sec
->size
1088 || memcmp (call
- 7, leaq
+ 1, 3) != 0
1089 || memcmp (call
, "\x48\xb8", 2) != 0
1093 || !((call
[10] == 0x48 && call
[12] == 0xd8)
1094 || (call
[10] == 0x4c && call
[12] == 0xf8)))
1098 else if (ABI_64_P (abfd
))
1101 || memcmp (contents
+ offset
- 4, leaq
, 4) != 0)
1107 || memcmp (contents
+ offset
- 3, leaq
+ 1, 3) != 0)
1110 indirect_call
= call
[2] == 0xff;
1114 /* Check transition from LD access model. Only
1115 leaq foo@tlsld(%rip), %rdi;
1116 call __tls_get_addr@PLT
1118 leaq foo@tlsld(%rip), %rdi;
1119 call *__tls_get_addr@GOTPCREL(%rip)
1120 which may be converted to
1121 addr32 call __tls_get_addr
1122 can transit to different access model. For largepic
1124 leaq foo@tlsld(%rip), %rdi
1125 movabsq $__tls_get_addr@pltoff, %rax
1129 leaq foo@tlsld(%rip), %rdi
1130 movabsq $__tls_get_addr@pltoff, %rax
1134 static const unsigned char lea
[] = { 0x48, 0x8d, 0x3d };
1136 if (offset
< 3 || (offset
+ 9) > sec
->size
)
1139 if (memcmp (contents
+ offset
- 3, lea
, 3) != 0)
1142 call
= contents
+ offset
+ 4;
1143 if (!(call
[0] == 0xe8
1144 || (call
[0] == 0xff && call
[1] == 0x15)
1145 || (call
[0] == 0x67 && call
[1] == 0xe8)))
1147 if (!ABI_64_P (abfd
)
1148 || (offset
+ 19) > sec
->size
1149 || memcmp (call
, "\x48\xb8", 2) != 0
1153 || !((call
[10] == 0x48 && call
[12] == 0xd8)
1154 || (call
[10] == 0x4c && call
[12] == 0xf8)))
1158 indirect_call
= call
[0] == 0xff;
1161 r_symndx
= htab
->r_sym (rel
[1].r_info
);
1162 if (r_symndx
< symtab_hdr
->sh_info
)
1165 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1167 || !((struct elf_x86_link_hash_entry
*) h
)->tls_get_addr
)
1171 r_type
= (ELF32_R_TYPE (rel
[1].r_info
)
1172 & ~R_X86_64_converted_reloc_bit
);
1174 return r_type
== R_X86_64_PLTOFF64
;
1175 else if (indirect_call
)
1176 return r_type
== R_X86_64_GOTPCRELX
;
1178 return (r_type
== R_X86_64_PC32
|| r_type
== R_X86_64_PLT32
);
1181 case R_X86_64_GOTTPOFF
:
1182 /* Check transition from IE access model:
1183 mov foo@gottpoff(%rip), %reg
1184 add foo@gottpoff(%rip), %reg
1187 /* Check REX prefix first. */
1188 if (offset
>= 3 && (offset
+ 4) <= sec
->size
)
1190 val
= bfd_get_8 (abfd
, contents
+ offset
- 3);
1191 if (val
!= 0x48 && val
!= 0x4c)
1193 /* X32 may have 0x44 REX prefix or no REX prefix. */
1194 if (ABI_64_P (abfd
))
1200 /* X32 may not have any REX prefix. */
1201 if (ABI_64_P (abfd
))
1203 if (offset
< 2 || (offset
+ 3) > sec
->size
)
1207 val
= bfd_get_8 (abfd
, contents
+ offset
- 2);
1208 if (val
!= 0x8b && val
!= 0x03)
1211 val
= bfd_get_8 (abfd
, contents
+ offset
- 1);
1212 return (val
& 0xc7) == 5;
1214 case R_X86_64_GOTPC32_TLSDESC
:
1215 /* Check transition from GDesc access model:
1216 leaq x@tlsdesc(%rip), %rax <--- LP64 mode.
1217 rex leal x@tlsdesc(%rip), %eax <--- X32 mode.
1219 Make sure it's a leaq adding rip to a 32-bit offset
1220 into any register, although it's probably almost always
1223 if (offset
< 3 || (offset
+ 4) > sec
->size
)
1226 val
= bfd_get_8 (abfd
, contents
+ offset
- 3);
1228 if (val
!= 0x48 && (ABI_64_P (abfd
) || val
!= 0x40))
1231 if (bfd_get_8 (abfd
, contents
+ offset
- 2) != 0x8d)
1234 val
= bfd_get_8 (abfd
, contents
+ offset
- 1);
1235 return (val
& 0xc7) == 0x05;
1237 case R_X86_64_TLSDESC_CALL
:
1238 /* Check transition from GDesc access model:
1239 call *x@tlsdesc(%rax) <--- LP64 mode.
1240 call *x@tlsdesc(%eax) <--- X32 mode.
1242 if (offset
+ 2 <= sec
->size
)
1244 unsigned int prefix
;
1245 call
= contents
+ offset
;
1247 if (!ABI_64_P (abfd
))
1249 /* Check for call *x@tlsdesc(%eax). */
1250 if (call
[0] == 0x67)
1253 if (offset
+ 3 > sec
->size
)
1257 /* Make sure that it's a call *x@tlsdesc(%rax). */
1258 return call
[prefix
] == 0xff && call
[1 + prefix
] == 0x10;
1268 /* Return TRUE if the TLS access transition is OK or no transition
1269 will be performed. Update R_TYPE if there is a transition. */
1272 elf_x86_64_tls_transition (struct bfd_link_info
*info
, bfd
*abfd
,
1273 asection
*sec
, bfd_byte
*contents
,
1274 Elf_Internal_Shdr
*symtab_hdr
,
1275 struct elf_link_hash_entry
**sym_hashes
,
1276 unsigned int *r_type
, int tls_type
,
1277 const Elf_Internal_Rela
*rel
,
1278 const Elf_Internal_Rela
*relend
,
1279 struct elf_link_hash_entry
*h
,
1280 unsigned long r_symndx
,
1281 bool from_relocate_section
)
1283 unsigned int from_type
= *r_type
;
1284 unsigned int to_type
= from_type
;
1287 /* Skip TLS transition for functions. */
1289 && (h
->type
== STT_FUNC
1290 || h
->type
== STT_GNU_IFUNC
))
1295 case R_X86_64_TLSGD
:
1296 case R_X86_64_GOTPC32_TLSDESC
:
1297 case R_X86_64_TLSDESC_CALL
:
1298 case R_X86_64_GOTTPOFF
:
1299 if (bfd_link_executable (info
))
1302 to_type
= R_X86_64_TPOFF32
;
1304 to_type
= R_X86_64_GOTTPOFF
;
1307 /* When we are called from elf_x86_64_relocate_section, there may
1308 be additional transitions based on TLS_TYPE. */
1309 if (from_relocate_section
)
1311 unsigned int new_to_type
= to_type
;
1313 if (TLS_TRANSITION_IE_TO_LE_P (info
, h
, tls_type
))
1314 new_to_type
= R_X86_64_TPOFF32
;
1316 if (to_type
== R_X86_64_TLSGD
1317 || to_type
== R_X86_64_GOTPC32_TLSDESC
1318 || to_type
== R_X86_64_TLSDESC_CALL
)
1320 if (tls_type
== GOT_TLS_IE
)
1321 new_to_type
= R_X86_64_GOTTPOFF
;
1324 /* We checked the transition before when we were called from
1325 elf_x86_64_check_relocs. We only want to check the new
1326 transition which hasn't been checked before. */
1327 check
= new_to_type
!= to_type
&& from_type
== to_type
;
1328 to_type
= new_to_type
;
1333 case R_X86_64_TLSLD
:
1334 if (bfd_link_executable (info
))
1335 to_type
= R_X86_64_TPOFF32
;
1342 /* Return TRUE if there is no transition. */
1343 if (from_type
== to_type
)
1346 /* Check if the transition can be performed. */
1348 && ! elf_x86_64_check_tls_transition (abfd
, info
, sec
, contents
,
1349 symtab_hdr
, sym_hashes
,
1350 from_type
, rel
, relend
))
1352 reloc_howto_type
*from
, *to
;
1355 from
= elf_x86_64_rtype_to_howto (abfd
, from_type
);
1356 to
= elf_x86_64_rtype_to_howto (abfd
, to_type
);
1358 if (from
== NULL
|| to
== NULL
)
1362 name
= h
->root
.root
.string
;
1365 struct elf_x86_link_hash_table
*htab
;
1367 htab
= elf_x86_hash_table (info
, X86_64_ELF_DATA
);
1372 Elf_Internal_Sym
*isym
;
1374 isym
= bfd_sym_from_r_symndx (&htab
->elf
.sym_cache
,
1376 name
= bfd_elf_sym_name (abfd
, symtab_hdr
, isym
, NULL
);
1381 /* xgettext:c-format */
1382 (_("%pB: TLS transition from %s to %s against `%s' at %#" PRIx64
1383 " in section `%pA' failed"),
1384 abfd
, from
->name
, to
->name
, name
, (uint64_t) rel
->r_offset
, sec
);
1385 bfd_set_error (bfd_error_bad_value
);
1393 /* Rename some of the generic section flags to better document how they
1395 #define check_relocs_failed sec_flg0
1398 elf_x86_64_need_pic (struct bfd_link_info
*info
,
1399 bfd
*input_bfd
, asection
*sec
,
1400 struct elf_link_hash_entry
*h
,
1401 Elf_Internal_Shdr
*symtab_hdr
,
1402 Elf_Internal_Sym
*isym
,
1403 reloc_howto_type
*howto
)
1406 const char *und
= "";
1407 const char *pic
= "";
1413 name
= h
->root
.root
.string
;
1414 switch (ELF_ST_VISIBILITY (h
->other
))
1417 v
= _("hidden symbol ");
1420 v
= _("internal symbol ");
1423 v
= _("protected symbol ");
1426 if (((struct elf_x86_link_hash_entry
*) h
)->def_protected
)
1427 v
= _("protected symbol ");
1434 if (!SYMBOL_DEFINED_NON_SHARED_P (h
) && !h
->def_dynamic
)
1435 und
= _("undefined ");
1439 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, isym
, NULL
);
1443 if (bfd_link_dll (info
))
1445 object
= _("a shared object");
1447 pic
= _("; recompile with -fPIC");
1451 if (bfd_link_pie (info
))
1452 object
= _("a PIE object");
1454 object
= _("a PDE object");
1456 pic
= _("; recompile with -fPIE");
1459 /* xgettext:c-format */
1460 _bfd_error_handler (_("%pB: relocation %s against %s%s`%s' can "
1461 "not be used when making %s%s"),
1462 input_bfd
, howto
->name
, und
, v
, name
,
1464 bfd_set_error (bfd_error_bad_value
);
1465 sec
->check_relocs_failed
= 1;
1469 /* With the local symbol, foo, we convert
1470 mov foo@GOTPCREL(%rip), %reg
1474 call/jmp *foo@GOTPCREL(%rip)
1476 nop call foo/jmp foo nop
1477 When PIC is false, convert
1478 test %reg, foo@GOTPCREL(%rip)
1482 binop foo@GOTPCREL(%rip), %reg
1485 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1489 elf_x86_64_convert_load_reloc (bfd
*abfd
,
1491 unsigned int *r_type_p
,
1492 Elf_Internal_Rela
*irel
,
1493 struct elf_link_hash_entry
*h
,
1495 struct bfd_link_info
*link_info
)
1497 struct elf_x86_link_hash_table
*htab
;
1505 bfd_signed_vma raddend
;
1506 unsigned int opcode
;
1508 unsigned int r_type
= *r_type_p
;
1509 unsigned int r_symndx
;
1510 bfd_vma roff
= irel
->r_offset
;
1511 bfd_vma abs_relocation
;
1513 if (roff
< (r_type
== R_X86_64_REX_GOTPCRELX
? 3 : 2))
1516 raddend
= irel
->r_addend
;
1517 /* Addend for 32-bit PC-relative relocation must be -4. */
1521 htab
= elf_x86_hash_table (link_info
, X86_64_ELF_DATA
);
1522 is_pic
= bfd_link_pic (link_info
);
1524 relocx
= (r_type
== R_X86_64_GOTPCRELX
1525 || r_type
== R_X86_64_REX_GOTPCRELX
);
1527 /* TRUE if --no-relax is used. */
1528 no_overflow
= link_info
->disable_target_specific_optimizations
> 1;
1530 r_symndx
= htab
->r_sym (irel
->r_info
);
1532 opcode
= bfd_get_8 (abfd
, contents
+ roff
- 2);
1534 /* Convert mov to lea since it has been done for a while. */
1537 /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX
1538 for call, jmp or one of adc, add, and, cmp, or, sbb, sub,
1539 test, xor instructions. */
1544 /* We convert only to R_X86_64_PC32:
1546 2. R_X86_64_GOTPCREL since we can't modify REX byte.
1547 3. no_overflow is true.
1550 to_reloc_pc32
= (opcode
== 0xff
1558 /* Get the symbol referred to by the reloc. */
1561 Elf_Internal_Sym
*isym
1562 = bfd_sym_from_r_symndx (&htab
->elf
.sym_cache
, abfd
, r_symndx
);
1564 /* Skip relocation against undefined symbols. */
1565 if (isym
->st_shndx
== SHN_UNDEF
)
1569 if (isym
->st_shndx
== SHN_ABS
)
1571 tsec
= bfd_abs_section_ptr
;
1573 abs_relocation
= isym
->st_value
;
1575 else if (isym
->st_shndx
== SHN_COMMON
)
1576 tsec
= bfd_com_section_ptr
;
1577 else if (isym
->st_shndx
== SHN_X86_64_LCOMMON
)
1578 tsec
= &_bfd_elf_large_com_section
;
1580 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1584 /* Undefined weak symbol is only bound locally in executable
1585 and its reference is resolved as 0 without relocation
1586 overflow. We can only perform this optimization for
1587 GOTPCRELX relocations since we need to modify REX byte.
1588 It is OK convert mov with R_X86_64_GOTPCREL to
1590 struct elf_x86_link_hash_entry
*eh
= elf_x86_hash_entry (h
);
1592 abs_symbol
= ABS_SYMBOL_P (h
);
1593 abs_relocation
= h
->root
.u
.def
.value
;
1595 /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P. */
1596 local_ref
= SYMBOL_REFERENCES_LOCAL_P (link_info
, h
);
1597 if ((relocx
|| opcode
== 0x8b)
1598 && (h
->root
.type
== bfd_link_hash_undefweak
1604 /* Skip for branch instructions since R_X86_64_PC32
1611 /* For non-branch instructions, we can convert to
1612 R_X86_64_32/R_X86_64_32S since we know if there
1614 to_reloc_pc32
= false;
1617 /* Since we don't know the current PC when PIC is true,
1618 we can't convert to R_X86_64_PC32. */
1619 if (to_reloc_pc32
&& is_pic
)
1624 /* Avoid optimizing GOTPCREL relocations againt _DYNAMIC since
1625 ld.so may use its link-time address. */
1626 else if (h
->start_stop
1629 || h
->root
.type
== bfd_link_hash_defined
1630 || h
->root
.type
== bfd_link_hash_defweak
)
1631 && h
!= htab
->elf
.hdynamic
1634 /* bfd_link_hash_new or bfd_link_hash_undefined is
1635 set by an assignment in a linker script in
1636 bfd_elf_record_link_assignment. start_stop is set
1637 on __start_SECNAME/__stop_SECNAME which mark section
1642 && (h
->root
.type
== bfd_link_hash_new
1643 || h
->root
.type
== bfd_link_hash_undefined
1644 || ((h
->root
.type
== bfd_link_hash_defined
1645 || h
->root
.type
== bfd_link_hash_defweak
)
1646 && h
->root
.u
.def
.section
== bfd_und_section_ptr
))))
1648 /* Skip since R_X86_64_32/R_X86_64_32S may overflow. */
1653 tsec
= h
->root
.u
.def
.section
;
1659 /* Don't convert GOTPCREL relocation against large section. */
1660 if (elf_section_data (tsec
) != NULL
1661 && (elf_section_flags (tsec
) & SHF_X86_64_LARGE
) != 0)
1664 /* Skip since R_X86_64_PC32/R_X86_64_32/R_X86_64_32S may overflow. */
1671 /* We have "call/jmp *foo@GOTPCREL(%rip)". */
1676 /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to
1678 modrm
= bfd_get_8 (abfd
, contents
+ roff
- 1);
1681 /* Convert to "jmp foo nop". */
1684 nop_offset
= irel
->r_offset
+ 3;
1685 disp
= bfd_get_32 (abfd
, contents
+ irel
->r_offset
);
1686 irel
->r_offset
-= 1;
1687 bfd_put_32 (abfd
, disp
, contents
+ irel
->r_offset
);
1691 struct elf_x86_link_hash_entry
*eh
1692 = (struct elf_x86_link_hash_entry
*) h
;
1694 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1697 /* To support TLS optimization, always use addr32 prefix for
1698 "call *__tls_get_addr@GOTPCREL(%rip)". */
1699 if (eh
&& eh
->tls_get_addr
)
1702 nop_offset
= irel
->r_offset
- 2;
1706 nop
= htab
->params
->call_nop_byte
;
1707 if (htab
->params
->call_nop_as_suffix
)
1709 nop_offset
= irel
->r_offset
+ 3;
1710 disp
= bfd_get_32 (abfd
, contents
+ irel
->r_offset
);
1711 irel
->r_offset
-= 1;
1712 bfd_put_32 (abfd
, disp
, contents
+ irel
->r_offset
);
1715 nop_offset
= irel
->r_offset
- 2;
1718 bfd_put_8 (abfd
, nop
, contents
+ nop_offset
);
1719 bfd_put_8 (abfd
, modrm
, contents
+ irel
->r_offset
- 1);
1720 r_type
= R_X86_64_PC32
;
1725 unsigned int rex_mask
= REX_R
;
1727 if (r_type
== R_X86_64_REX_GOTPCRELX
)
1728 rex
= bfd_get_8 (abfd
, contents
+ roff
- 3);
1734 if (abs_symbol
&& local_ref
&& relocx
)
1735 to_reloc_pc32
= false;
1739 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
1740 "lea foo(%rip), %reg". */
1742 r_type
= R_X86_64_PC32
;
1746 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
1747 "mov $foo, %reg". */
1749 modrm
= bfd_get_8 (abfd
, contents
+ roff
- 1);
1750 modrm
= 0xc0 | (modrm
& 0x38) >> 3;
1751 if ((rex
& REX_W
) != 0
1752 && ABI_64_P (link_info
->output_bfd
))
1754 /* Keep the REX_W bit in REX byte for LP64. */
1755 r_type
= R_X86_64_32S
;
1756 goto rewrite_modrm_rex
;
1760 /* If the REX_W bit in REX byte isn't needed,
1761 use R_X86_64_32 and clear the W bit to avoid
1762 sign-extend imm32 to imm64. */
1763 r_type
= R_X86_64_32
;
1764 /* Clear the W bit in REX byte. */
1766 goto rewrite_modrm_rex
;
1772 /* R_X86_64_PC32 isn't supported. */
1776 modrm
= bfd_get_8 (abfd
, contents
+ roff
- 1);
1779 /* Convert "test %reg, foo@GOTPCREL(%rip)" to
1780 "test $foo, %reg". */
1781 modrm
= 0xc0 | (modrm
& 0x38) >> 3;
1786 /* Convert "binop foo@GOTPCREL(%rip), %reg" to
1787 "binop $foo, %reg". */
1788 modrm
= 0xc0 | (modrm
& 0x38) >> 3 | (opcode
& 0x3c);
1792 /* Use R_X86_64_32 with 32-bit operand to avoid relocation
1793 overflow when sign-extending imm32 to imm64. */
1794 r_type
= (rex
& REX_W
) != 0 ? R_X86_64_32S
: R_X86_64_32
;
1799 /* Check if R_X86_64_32S/R_X86_64_32 fits. */
1800 if (r_type
== R_X86_64_32S
)
1802 if ((abs_relocation
+ 0x80000000) > 0xffffffff)
1807 if (abs_relocation
> 0xffffffff)
1812 bfd_put_8 (abfd
, modrm
, contents
+ roff
- 1);
1816 /* Move the R bit to the B bit in REX byte. */
1817 rex
= (rex
& ~rex_mask
) | (rex
& REX_R
) >> 2;
1818 bfd_put_8 (abfd
, rex
, contents
+ roff
- 3);
1821 /* No addend for R_X86_64_32/R_X86_64_32S relocations. */
1825 bfd_put_8 (abfd
, opcode
, contents
+ roff
- 2);
1829 irel
->r_info
= htab
->r_info (r_symndx
,
1830 r_type
| R_X86_64_converted_reloc_bit
);
1837 /* Look through the relocs for a section during the first phase, and
1838 calculate needed space in the global offset table, procedure
1839 linkage table, and dynamic reloc sections. */
1842 elf_x86_64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
1844 const Elf_Internal_Rela
*relocs
)
1846 struct elf_x86_link_hash_table
*htab
;
1847 Elf_Internal_Shdr
*symtab_hdr
;
1848 struct elf_link_hash_entry
**sym_hashes
;
1849 const Elf_Internal_Rela
*rel
;
1850 const Elf_Internal_Rela
*rel_end
;
1855 if (bfd_link_relocatable (info
))
1858 htab
= elf_x86_hash_table (info
, X86_64_ELF_DATA
);
1861 sec
->check_relocs_failed
= 1;
1865 BFD_ASSERT (is_x86_elf (abfd
, htab
));
1867 /* Get the section contents. */
1868 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
1869 contents
= elf_section_data (sec
)->this_hdr
.contents
;
1870 else if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
1872 sec
->check_relocs_failed
= 1;
1876 symtab_hdr
= &elf_symtab_hdr (abfd
);
1877 sym_hashes
= elf_sym_hashes (abfd
);
1883 rel_end
= relocs
+ sec
->reloc_count
;
1884 for (rel
= relocs
; rel
< rel_end
; rel
++)
1886 unsigned int r_type
;
1887 unsigned int r_symndx
;
1888 struct elf_link_hash_entry
*h
;
1889 struct elf_x86_link_hash_entry
*eh
;
1890 Elf_Internal_Sym
*isym
;
1893 bool converted_reloc
;
1896 r_symndx
= htab
->r_sym (rel
->r_info
);
1897 r_type
= ELF32_R_TYPE (rel
->r_info
);
1899 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
1901 /* xgettext:c-format */
1902 _bfd_error_handler (_("%pB: bad symbol index: %d"),
1907 if (r_symndx
< symtab_hdr
->sh_info
)
1909 /* A local symbol. */
1910 isym
= bfd_sym_from_r_symndx (&htab
->elf
.sym_cache
,
1915 /* Check relocation against local STT_GNU_IFUNC symbol. */
1916 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
1918 h
= _bfd_elf_x86_get_local_sym_hash (htab
, abfd
, rel
,
1923 /* Fake a STT_GNU_IFUNC symbol. */
1924 h
->root
.root
.string
= bfd_elf_sym_name (abfd
, symtab_hdr
,
1926 h
->type
= STT_GNU_IFUNC
;
1929 h
->forced_local
= 1;
1930 h
->root
.type
= bfd_link_hash_defined
;
1938 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1939 while (h
->root
.type
== bfd_link_hash_indirect
1940 || h
->root
.type
== bfd_link_hash_warning
)
1941 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1944 /* Check invalid x32 relocations. */
1945 if (!ABI_64_P (abfd
))
1951 case R_X86_64_DTPOFF64
:
1952 case R_X86_64_TPOFF64
:
1954 case R_X86_64_GOTOFF64
:
1955 case R_X86_64_GOT64
:
1956 case R_X86_64_GOTPCREL64
:
1957 case R_X86_64_GOTPC64
:
1958 case R_X86_64_GOTPLT64
:
1959 case R_X86_64_PLTOFF64
:
1962 name
= h
->root
.root
.string
;
1964 name
= bfd_elf_sym_name (abfd
, symtab_hdr
, isym
,
1967 /* xgettext:c-format */
1968 (_("%pB: relocation %s against symbol `%s' isn't "
1969 "supported in x32 mode"), abfd
,
1970 x86_64_elf_howto_table
[r_type
].name
, name
);
1971 bfd_set_error (bfd_error_bad_value
);
1979 /* It is referenced by a non-shared object. */
1983 converted_reloc
= false;
1984 if ((r_type
== R_X86_64_GOTPCREL
1985 || r_type
== R_X86_64_GOTPCRELX
1986 || r_type
== R_X86_64_REX_GOTPCRELX
)
1987 && (h
== NULL
|| h
->type
!= STT_GNU_IFUNC
))
1989 Elf_Internal_Rela
*irel
= (Elf_Internal_Rela
*) rel
;
1990 if (!elf_x86_64_convert_load_reloc (abfd
, contents
, &r_type
,
1991 irel
, h
, &converted_reloc
,
1995 if (converted_reloc
)
1999 if (!_bfd_elf_x86_valid_reloc_p (sec
, info
, htab
, rel
, h
, isym
,
2000 symtab_hdr
, &no_dynreloc
))
2003 if (! elf_x86_64_tls_transition (info
, abfd
, sec
, contents
,
2004 symtab_hdr
, sym_hashes
,
2005 &r_type
, GOT_UNKNOWN
,
2006 rel
, rel_end
, h
, r_symndx
, false))
2009 /* Check if _GLOBAL_OFFSET_TABLE_ is referenced. */
2010 if (h
== htab
->elf
.hgot
)
2011 htab
->got_referenced
= true;
2013 eh
= (struct elf_x86_link_hash_entry
*) h
;
2016 case R_X86_64_TLSLD
:
2017 htab
->tls_ld_or_ldm_got
.refcount
= 1;
2020 case R_X86_64_TPOFF32
:
2021 if (!bfd_link_executable (info
) && ABI_64_P (abfd
))
2022 return elf_x86_64_need_pic (info
, abfd
, sec
, h
, symtab_hdr
, isym
,
2023 &x86_64_elf_howto_table
[r_type
]);
2025 eh
->zero_undefweak
&= 0x2;
2028 case R_X86_64_GOTTPOFF
:
2029 if (!bfd_link_executable (info
))
2030 info
->flags
|= DF_STATIC_TLS
;
2033 case R_X86_64_GOT32
:
2034 case R_X86_64_GOTPCREL
:
2035 case R_X86_64_GOTPCRELX
:
2036 case R_X86_64_REX_GOTPCRELX
:
2037 case R_X86_64_TLSGD
:
2038 case R_X86_64_GOT64
:
2039 case R_X86_64_GOTPCREL64
:
2040 case R_X86_64_GOTPLT64
:
2041 case R_X86_64_GOTPC32_TLSDESC
:
2042 case R_X86_64_TLSDESC_CALL
:
2043 /* This symbol requires a global offset table entry. */
2045 int tls_type
, old_tls_type
;
2050 tls_type
= GOT_NORMAL
;
2053 if (ABS_SYMBOL_P (h
))
2056 else if (isym
->st_shndx
== SHN_ABS
)
2059 case R_X86_64_TLSGD
:
2060 tls_type
= GOT_TLS_GD
;
2062 case R_X86_64_GOTTPOFF
:
2063 tls_type
= GOT_TLS_IE
;
2065 case R_X86_64_GOTPC32_TLSDESC
:
2066 case R_X86_64_TLSDESC_CALL
:
2067 tls_type
= GOT_TLS_GDESC
;
2073 h
->got
.refcount
= 1;
2074 old_tls_type
= eh
->tls_type
;
2078 bfd_signed_vma
*local_got_refcounts
;
2080 /* This is a global offset table entry for a local symbol. */
2081 local_got_refcounts
= elf_local_got_refcounts (abfd
);
2082 if (local_got_refcounts
== NULL
)
2086 size
= symtab_hdr
->sh_info
;
2087 size
*= sizeof (bfd_signed_vma
)
2088 + sizeof (bfd_vma
) + sizeof (char);
2089 local_got_refcounts
= ((bfd_signed_vma
*)
2090 bfd_zalloc (abfd
, size
));
2091 if (local_got_refcounts
== NULL
)
2093 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2094 elf_x86_local_tlsdesc_gotent (abfd
)
2095 = (bfd_vma
*) (local_got_refcounts
+ symtab_hdr
->sh_info
);
2096 elf_x86_local_got_tls_type (abfd
)
2097 = (char *) (local_got_refcounts
+ 2 * symtab_hdr
->sh_info
);
2099 local_got_refcounts
[r_symndx
] = 1;
2101 = elf_x86_local_got_tls_type (abfd
) [r_symndx
];
2104 /* If a TLS symbol is accessed using IE at least once,
2105 there is no point to use dynamic model for it. */
2106 if (old_tls_type
!= tls_type
&& old_tls_type
!= GOT_UNKNOWN
2107 && (! GOT_TLS_GD_ANY_P (old_tls_type
)
2108 || tls_type
!= GOT_TLS_IE
))
2110 if (old_tls_type
== GOT_TLS_IE
&& GOT_TLS_GD_ANY_P (tls_type
))
2111 tls_type
= old_tls_type
;
2112 else if (GOT_TLS_GD_ANY_P (old_tls_type
)
2113 && GOT_TLS_GD_ANY_P (tls_type
))
2114 tls_type
|= old_tls_type
;
2118 name
= h
->root
.root
.string
;
2120 name
= bfd_elf_sym_name (abfd
, symtab_hdr
,
2123 /* xgettext:c-format */
2124 (_("%pB: '%s' accessed both as normal and"
2125 " thread local symbol"),
2127 bfd_set_error (bfd_error_bad_value
);
2132 if (old_tls_type
!= tls_type
)
2135 eh
->tls_type
= tls_type
;
2137 elf_x86_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
2142 case R_X86_64_GOTOFF64
:
2143 case R_X86_64_GOTPC32
:
2144 case R_X86_64_GOTPC64
:
2147 eh
->zero_undefweak
&= 0x2;
2150 case R_X86_64_PLT32
:
2151 case R_X86_64_PLT32_BND
:
2152 /* This symbol requires a procedure linkage table entry. We
2153 actually build the entry in adjust_dynamic_symbol,
2154 because this might be a case of linking PIC code which is
2155 never referenced by a dynamic object, in which case we
2156 don't need to generate a procedure linkage table entry
2159 /* If this is a local symbol, we resolve it directly without
2160 creating a procedure linkage table entry. */
2164 eh
->zero_undefweak
&= 0x2;
2166 h
->plt
.refcount
= 1;
2169 case R_X86_64_PLTOFF64
:
2170 /* This tries to form the 'address' of a function relative
2171 to GOT. For global symbols we need a PLT entry. */
2175 h
->plt
.refcount
= 1;
2179 case R_X86_64_SIZE32
:
2180 case R_X86_64_SIZE64
:
2185 if (!ABI_64_P (abfd
))
2191 /* Check relocation overflow as these relocs may lead to
2192 run-time relocation overflow. Don't error out for
2193 sections we don't care about, such as debug sections or
2194 when relocation overflow check is disabled. */
2195 if (!htab
->params
->no_reloc_overflow_check
2197 && (bfd_link_pic (info
)
2198 || (bfd_link_executable (info
)
2202 && (sec
->flags
& SEC_READONLY
) == 0)))
2203 return elf_x86_64_need_pic (info
, abfd
, sec
, h
, symtab_hdr
, isym
,
2204 &x86_64_elf_howto_table
[r_type
]);
2210 case R_X86_64_PC32_BND
:
2214 if (eh
!= NULL
&& (sec
->flags
& SEC_CODE
) != 0)
2215 eh
->zero_undefweak
|= 0x2;
2216 /* We are called after all symbols have been resolved. Only
2217 relocation against STT_GNU_IFUNC symbol must go through
2220 && (bfd_link_executable (info
)
2221 || h
->type
== STT_GNU_IFUNC
))
2223 bool func_pointer_ref
= false;
2225 if (r_type
== R_X86_64_PC32
)
2227 /* Since something like ".long foo - ." may be used
2228 as pointer, make sure that PLT is used if foo is
2229 a function defined in a shared library. */
2230 if ((sec
->flags
& SEC_CODE
) == 0)
2232 h
->pointer_equality_needed
= 1;
2233 if (bfd_link_pie (info
)
2234 && h
->type
== STT_FUNC
2239 h
->plt
.refcount
= 1;
2243 else if (r_type
!= R_X86_64_PC32_BND
2244 && r_type
!= R_X86_64_PC64
)
2246 h
->pointer_equality_needed
= 1;
2247 /* At run-time, R_X86_64_64 can be resolved for both
2248 x86-64 and x32. But R_X86_64_32 and R_X86_64_32S
2249 can only be resolved for x32. */
2250 if ((sec
->flags
& SEC_READONLY
) == 0
2251 && (r_type
== R_X86_64_64
2252 || (!ABI_64_P (abfd
)
2253 && (r_type
== R_X86_64_32
2254 || r_type
== R_X86_64_32S
))))
2255 func_pointer_ref
= true;
2258 if (!func_pointer_ref
)
2260 /* If this reloc is in a read-only section, we might
2261 need a copy reloc. We can't check reliably at this
2262 stage whether the section is read-only, as input
2263 sections have not yet been mapped to output sections.
2264 Tentatively set the flag for now, and correct in
2265 adjust_dynamic_symbol. */
2268 /* We may need a .plt entry if the symbol is a function
2269 defined in a shared lib or is a function referenced
2270 from the code or read-only section. */
2272 || (sec
->flags
& (SEC_CODE
| SEC_READONLY
)) != 0)
2273 h
->plt
.refcount
= 1;
2280 && NEED_DYNAMIC_RELOCATION_P (info
, true, h
, sec
, r_type
,
2281 htab
->pointer_r_type
))
2283 struct elf_dyn_relocs
*p
;
2284 struct elf_dyn_relocs
**head
;
2286 /* We must copy these reloc types into the output file.
2287 Create a reloc section in dynobj and make room for
2291 sreloc
= _bfd_elf_make_dynamic_reloc_section
2292 (sec
, htab
->elf
.dynobj
, ABI_64_P (abfd
) ? 3 : 2,
2293 abfd
, /*rela?*/ true);
2299 /* If this is a global symbol, we count the number of
2300 relocations we need for this symbol. */
2302 head
= &h
->dyn_relocs
;
2305 /* Track dynamic relocs needed for local syms too.
2306 We really need local syms available to do this
2311 isym
= bfd_sym_from_r_symndx (&htab
->elf
.sym_cache
,
2316 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2320 /* Beware of type punned pointers vs strict aliasing
2322 vpp
= &(elf_section_data (s
)->local_dynrel
);
2323 head
= (struct elf_dyn_relocs
**)vpp
;
2327 if (p
== NULL
|| p
->sec
!= sec
)
2329 size_t amt
= sizeof *p
;
2331 p
= ((struct elf_dyn_relocs
*)
2332 bfd_alloc (htab
->elf
.dynobj
, amt
));
2343 /* Count size relocation as PC-relative relocation. */
2344 if (X86_PCREL_TYPE_P (r_type
) || size_reloc
)
2349 /* This relocation describes the C++ object vtable hierarchy.
2350 Reconstruct it for later use during GC. */
2351 case R_X86_64_GNU_VTINHERIT
:
2352 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
2356 /* This relocation describes which C++ vtable entries are actually
2357 used. Record for later use during GC. */
2358 case R_X86_64_GNU_VTENTRY
:
2359 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
2368 if (elf_section_data (sec
)->this_hdr
.contents
!= contents
)
2370 if (!converted
&& !info
->keep_memory
)
2374 /* Cache the section contents for elf_link_input_bfd if any
2375 load is converted or --no-keep-memory isn't used. */
2376 elf_section_data (sec
)->this_hdr
.contents
= contents
;
2380 /* Cache relocations if any load is converted. */
2381 if (elf_section_data (sec
)->relocs
!= relocs
&& converted
)
2382 elf_section_data (sec
)->relocs
= (Elf_Internal_Rela
*) relocs
;
2387 if (elf_section_data (sec
)->this_hdr
.contents
!= contents
)
2389 sec
->check_relocs_failed
= 1;
2393 /* Return the relocation value for @tpoff relocation
2394 if STT_TLS virtual address is ADDRESS. */
2397 elf_x86_64_tpoff (struct bfd_link_info
*info
, bfd_vma address
)
2399 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
2400 const struct elf_backend_data
*bed
= get_elf_backend_data (info
->output_bfd
);
2401 bfd_vma static_tls_size
;
2403 /* If tls_segment is NULL, we should have signalled an error already. */
2404 if (htab
->tls_sec
== NULL
)
2407 /* Consider special static TLS alignment requirements. */
2408 static_tls_size
= BFD_ALIGN (htab
->tls_size
, bed
->static_tls_alignment
);
2409 return address
- static_tls_size
- htab
->tls_sec
->vma
;
2412 /* Relocate an x86_64 ELF section. */
2415 elf_x86_64_relocate_section (bfd
*output_bfd
,
2416 struct bfd_link_info
*info
,
2418 asection
*input_section
,
2420 Elf_Internal_Rela
*relocs
,
2421 Elf_Internal_Sym
*local_syms
,
2422 asection
**local_sections
)
2424 struct elf_x86_link_hash_table
*htab
;
2425 Elf_Internal_Shdr
*symtab_hdr
;
2426 struct elf_link_hash_entry
**sym_hashes
;
2427 bfd_vma
*local_got_offsets
;
2428 bfd_vma
*local_tlsdesc_gotents
;
2429 Elf_Internal_Rela
*rel
;
2430 Elf_Internal_Rela
*wrel
;
2431 Elf_Internal_Rela
*relend
;
2432 unsigned int plt_entry_size
;
2435 /* Skip if check_relocs failed. */
2436 if (input_section
->check_relocs_failed
)
2439 htab
= elf_x86_hash_table (info
, X86_64_ELF_DATA
);
2443 if (!is_x86_elf (input_bfd
, htab
))
2445 bfd_set_error (bfd_error_wrong_format
);
2449 plt_entry_size
= htab
->plt
.plt_entry_size
;
2450 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
2451 sym_hashes
= elf_sym_hashes (input_bfd
);
2452 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2453 local_tlsdesc_gotents
= elf_x86_local_tlsdesc_gotent (input_bfd
);
2455 _bfd_x86_elf_set_tls_module_base (info
);
2458 rel
= wrel
= relocs
;
2459 relend
= relocs
+ input_section
->reloc_count
;
2460 for (; rel
< relend
; wrel
++, rel
++)
2462 unsigned int r_type
, r_type_tls
;
2463 reloc_howto_type
*howto
;
2464 unsigned long r_symndx
;
2465 struct elf_link_hash_entry
*h
;
2466 struct elf_x86_link_hash_entry
*eh
;
2467 Elf_Internal_Sym
*sym
;
2469 bfd_vma off
, offplt
, plt_offset
;
2471 bool unresolved_reloc
;
2472 bfd_reloc_status_type r
;
2474 asection
*base_got
, *resolved_plt
;
2476 bool resolved_to_zero
;
2477 bool relative_reloc
;
2478 bool converted_reloc
;
2479 bool need_copy_reloc_in_pie
;
2480 bool no_copyreloc_p
;
2482 r_type
= ELF32_R_TYPE (rel
->r_info
);
2483 if (r_type
== (int) R_X86_64_GNU_VTINHERIT
2484 || r_type
== (int) R_X86_64_GNU_VTENTRY
)
2491 r_symndx
= htab
->r_sym (rel
->r_info
);
2492 converted_reloc
= (r_type
& R_X86_64_converted_reloc_bit
) != 0;
2493 if (converted_reloc
)
2495 r_type
&= ~R_X86_64_converted_reloc_bit
;
2496 rel
->r_info
= htab
->r_info (r_symndx
, r_type
);
2499 howto
= elf_x86_64_rtype_to_howto (input_bfd
, r_type
);
2501 return _bfd_unrecognized_reloc (input_bfd
, input_section
, r_type
);
2506 unresolved_reloc
= false;
2507 if (r_symndx
< symtab_hdr
->sh_info
)
2509 sym
= local_syms
+ r_symndx
;
2510 sec
= local_sections
[r_symndx
];
2512 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
,
2514 st_size
= sym
->st_size
;
2516 /* Relocate against local STT_GNU_IFUNC symbol. */
2517 if (!bfd_link_relocatable (info
)
2518 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
2520 h
= _bfd_elf_x86_get_local_sym_hash (htab
, input_bfd
,
2525 /* Set STT_GNU_IFUNC symbol value. */
2526 h
->root
.u
.def
.value
= sym
->st_value
;
2527 h
->root
.u
.def
.section
= sec
;
2532 bool warned ATTRIBUTE_UNUSED
;
2533 bool ignored ATTRIBUTE_UNUSED
;
2535 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2536 r_symndx
, symtab_hdr
, sym_hashes
,
2538 unresolved_reloc
, warned
, ignored
);
2542 if (sec
!= NULL
&& discarded_section (sec
))
2544 _bfd_clear_contents (howto
, input_bfd
, input_section
,
2545 contents
, rel
->r_offset
);
2546 wrel
->r_offset
= rel
->r_offset
;
2550 /* For ld -r, remove relocations in debug sections against
2551 sections defined in discarded sections. Not done for
2552 eh_frame editing code expects to be present. */
2553 if (bfd_link_relocatable (info
)
2554 && (input_section
->flags
& SEC_DEBUGGING
))
2560 if (bfd_link_relocatable (info
))
2567 if (rel
->r_addend
== 0 && !ABI_64_P (output_bfd
))
2569 if (r_type
== R_X86_64_64
)
2571 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
2572 zero-extend it to 64bit if addend is zero. */
2573 r_type
= R_X86_64_32
;
2574 memset (contents
+ rel
->r_offset
+ 4, 0, 4);
2576 else if (r_type
== R_X86_64_SIZE64
)
2578 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
2579 zero-extend it to 64bit if addend is zero. */
2580 r_type
= R_X86_64_SIZE32
;
2581 memset (contents
+ rel
->r_offset
+ 4, 0, 4);
2585 eh
= (struct elf_x86_link_hash_entry
*) h
;
2587 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2588 it here if it is defined in a non-shared object. */
2590 && h
->type
== STT_GNU_IFUNC
2596 if ((input_section
->flags
& SEC_ALLOC
) == 0)
2598 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
2599 STT_GNU_IFUNC symbol as STT_FUNC. */
2600 if (elf_section_type (input_section
) == SHT_NOTE
)
2602 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2603 sections because such sections are not SEC_ALLOC and
2604 thus ld.so will not process them. */
2605 if ((input_section
->flags
& SEC_DEBUGGING
) != 0)
2615 case R_X86_64_GOTPCREL
:
2616 case R_X86_64_GOTPCRELX
:
2617 case R_X86_64_REX_GOTPCRELX
:
2618 case R_X86_64_GOTPCREL64
:
2619 base_got
= htab
->elf
.sgot
;
2620 off
= h
->got
.offset
;
2622 if (base_got
== NULL
)
2625 if (off
== (bfd_vma
) -1)
2627 /* We can't use h->got.offset here to save state, or
2628 even just remember the offset, as finish_dynamic_symbol
2629 would use that as offset into .got. */
2631 if (h
->plt
.offset
== (bfd_vma
) -1)
2634 if (htab
->elf
.splt
!= NULL
)
2636 plt_index
= (h
->plt
.offset
/ plt_entry_size
2637 - htab
->plt
.has_plt0
);
2638 off
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
2639 base_got
= htab
->elf
.sgotplt
;
2643 plt_index
= h
->plt
.offset
/ plt_entry_size
;
2644 off
= plt_index
* GOT_ENTRY_SIZE
;
2645 base_got
= htab
->elf
.igotplt
;
2648 if (h
->dynindx
== -1
2652 /* This references the local defitionion. We must
2653 initialize this entry in the global offset table.
2654 Since the offset must always be a multiple of 8,
2655 we use the least significant bit to record
2656 whether we have initialized it already.
2658 When doing a dynamic link, we create a .rela.got
2659 relocation entry to initialize the value. This
2660 is done in the finish_dynamic_symbol routine. */
2665 bfd_put_64 (output_bfd
, relocation
,
2666 base_got
->contents
+ off
);
2667 /* Note that this is harmless for the GOTPLT64
2668 case, as -1 | 1 still is -1. */
2674 relocation
= (base_got
->output_section
->vma
2675 + base_got
->output_offset
+ off
);
2680 if (h
->plt
.offset
== (bfd_vma
) -1)
2682 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2683 if (r_type
== htab
->pointer_r_type
2684 && (input_section
->flags
& SEC_CODE
) == 0)
2685 goto do_ifunc_pointer
;
2686 goto bad_ifunc_reloc
;
2689 /* STT_GNU_IFUNC symbol must go through PLT. */
2690 if (htab
->elf
.splt
!= NULL
)
2692 if (htab
->plt_second
!= NULL
)
2694 resolved_plt
= htab
->plt_second
;
2695 plt_offset
= eh
->plt_second
.offset
;
2699 resolved_plt
= htab
->elf
.splt
;
2700 plt_offset
= h
->plt
.offset
;
2705 resolved_plt
= htab
->elf
.iplt
;
2706 plt_offset
= h
->plt
.offset
;
2709 relocation
= (resolved_plt
->output_section
->vma
2710 + resolved_plt
->output_offset
+ plt_offset
);
2716 if (h
->root
.root
.string
)
2717 name
= h
->root
.root
.string
;
2719 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
2722 /* xgettext:c-format */
2723 (_("%pB: relocation %s against STT_GNU_IFUNC "
2724 "symbol `%s' isn't supported"), input_bfd
,
2726 bfd_set_error (bfd_error_bad_value
);
2730 if (bfd_link_pic (info
))
2735 if (ABI_64_P (output_bfd
))
2740 if (rel
->r_addend
!= 0)
2742 if (h
->root
.root
.string
)
2743 name
= h
->root
.root
.string
;
2745 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
,
2748 /* xgettext:c-format */
2749 (_("%pB: relocation %s against STT_GNU_IFUNC "
2750 "symbol `%s' has non-zero addend: %" PRId64
),
2751 input_bfd
, howto
->name
, name
, (int64_t) rel
->r_addend
);
2752 bfd_set_error (bfd_error_bad_value
);
2756 /* Generate dynamic relcoation only when there is a
2757 non-GOT reference in a shared object or there is no
2759 if ((bfd_link_pic (info
) && h
->non_got_ref
)
2760 || h
->plt
.offset
== (bfd_vma
) -1)
2762 Elf_Internal_Rela outrel
;
2765 /* Need a dynamic relocation to get the real function
2767 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
2771 if (outrel
.r_offset
== (bfd_vma
) -1
2772 || outrel
.r_offset
== (bfd_vma
) -2)
2775 outrel
.r_offset
+= (input_section
->output_section
->vma
2776 + input_section
->output_offset
);
2778 if (POINTER_LOCAL_IFUNC_P (info
, h
))
2780 info
->callbacks
->minfo (_("Local IFUNC function `%s' in %pB\n"),
2781 h
->root
.root
.string
,
2782 h
->root
.u
.def
.section
->owner
);
2784 /* This symbol is resolved locally. */
2785 outrel
.r_info
= htab
->r_info (0, R_X86_64_IRELATIVE
);
2786 outrel
.r_addend
= (h
->root
.u
.def
.value
2787 + h
->root
.u
.def
.section
->output_section
->vma
2788 + h
->root
.u
.def
.section
->output_offset
);
2790 if (htab
->params
->report_relative_reloc
)
2791 _bfd_x86_elf_link_report_relative_reloc
2792 (info
, input_section
, h
, sym
,
2793 "R_X86_64_IRELATIVE", &outrel
);
2797 outrel
.r_info
= htab
->r_info (h
->dynindx
, r_type
);
2798 outrel
.r_addend
= 0;
2801 /* Dynamic relocations are stored in
2802 1. .rela.ifunc section in PIC object.
2803 2. .rela.got section in dynamic executable.
2804 3. .rela.iplt section in static executable. */
2805 if (bfd_link_pic (info
))
2806 sreloc
= htab
->elf
.irelifunc
;
2807 else if (htab
->elf
.splt
!= NULL
)
2808 sreloc
= htab
->elf
.srelgot
;
2810 sreloc
= htab
->elf
.irelplt
;
2811 elf_append_rela (output_bfd
, sreloc
, &outrel
);
2813 /* If this reloc is against an external symbol, we
2814 do not want to fiddle with the addend. Otherwise,
2815 we need to include the symbol value so that it
2816 becomes an addend for the dynamic reloc. For an
2817 internal symbol, we have updated addend. */
2822 case R_X86_64_PC32_BND
:
2824 case R_X86_64_PLT32
:
2825 case R_X86_64_PLT32_BND
:
2831 resolved_to_zero
= (eh
!= NULL
2832 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info
, eh
));
2834 /* When generating a shared object, the relocations handled here are
2835 copied into the output file to be resolved at run time. */
2838 case R_X86_64_GOT32
:
2839 case R_X86_64_GOT64
:
2840 /* Relocation is to the entry for this symbol in the global
2842 case R_X86_64_GOTPCREL
:
2843 case R_X86_64_GOTPCRELX
:
2844 case R_X86_64_REX_GOTPCRELX
:
2845 case R_X86_64_GOTPCREL64
:
2846 /* Use global offset table entry as symbol value. */
2847 case R_X86_64_GOTPLT64
:
2848 /* This is obsolete and treated the same as GOT64. */
2849 base_got
= htab
->elf
.sgot
;
2851 if (htab
->elf
.sgot
== NULL
)
2854 relative_reloc
= false;
2857 off
= h
->got
.offset
;
2859 && h
->plt
.offset
!= (bfd_vma
)-1
2860 && off
== (bfd_vma
)-1)
2862 /* We can't use h->got.offset here to save
2863 state, or even just remember the offset, as
2864 finish_dynamic_symbol would use that as offset into
2866 bfd_vma plt_index
= (h
->plt
.offset
/ plt_entry_size
2867 - htab
->plt
.has_plt0
);
2868 off
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
2869 base_got
= htab
->elf
.sgotplt
;
2872 if (RESOLVED_LOCALLY_P (info
, h
, htab
))
2874 /* We must initialize this entry in the global offset
2875 table. Since the offset must always be a multiple
2876 of 8, we use the least significant bit to record
2877 whether we have initialized it already.
2879 When doing a dynamic link, we create a .rela.got
2880 relocation entry to initialize the value. This is
2881 done in the finish_dynamic_symbol routine. */
2886 bfd_put_64 (output_bfd
, relocation
,
2887 base_got
->contents
+ off
);
2888 /* Note that this is harmless for the GOTPLT64 case,
2889 as -1 | 1 still is -1. */
2892 if (GENERATE_RELATIVE_RELOC_P (info
, h
))
2894 /* If this symbol isn't dynamic in PIC,
2895 generate R_X86_64_RELATIVE here. */
2896 eh
->no_finish_dynamic_symbol
= 1;
2897 relative_reloc
= true;
2902 unresolved_reloc
= false;
2906 if (local_got_offsets
== NULL
)
2909 off
= local_got_offsets
[r_symndx
];
2911 /* The offset must always be a multiple of 8. We use
2912 the least significant bit to record whether we have
2913 already generated the necessary reloc. */
2918 bfd_put_64 (output_bfd
, relocation
,
2919 base_got
->contents
+ off
);
2920 local_got_offsets
[r_symndx
] |= 1;
2922 /* NB: GOTPCREL relocations against local absolute
2923 symbol store relocation value in the GOT slot
2924 without relative relocation. */
2925 if (bfd_link_pic (info
)
2926 && !(sym
->st_shndx
== SHN_ABS
2927 && (r_type
== R_X86_64_GOTPCREL
2928 || r_type
== R_X86_64_GOTPCRELX
2929 || r_type
== R_X86_64_REX_GOTPCRELX
)))
2930 relative_reloc
= true;
2937 Elf_Internal_Rela outrel
;
2939 /* We need to generate a R_X86_64_RELATIVE reloc
2940 for the dynamic linker. */
2941 s
= htab
->elf
.srelgot
;
2945 outrel
.r_offset
= (base_got
->output_section
->vma
2946 + base_got
->output_offset
2948 outrel
.r_info
= htab
->r_info (0, R_X86_64_RELATIVE
);
2949 outrel
.r_addend
= relocation
;
2951 if (htab
->params
->report_relative_reloc
)
2952 _bfd_x86_elf_link_report_relative_reloc
2953 (info
, input_section
, h
, sym
, "R_X86_64_RELATIVE",
2956 elf_append_rela (output_bfd
, s
, &outrel
);
2959 if (off
>= (bfd_vma
) -2)
2962 relocation
= base_got
->output_section
->vma
2963 + base_got
->output_offset
+ off
;
2964 if (r_type
!= R_X86_64_GOTPCREL
2965 && r_type
!= R_X86_64_GOTPCRELX
2966 && r_type
!= R_X86_64_REX_GOTPCRELX
2967 && r_type
!= R_X86_64_GOTPCREL64
)
2968 relocation
-= htab
->elf
.sgotplt
->output_section
->vma
2969 - htab
->elf
.sgotplt
->output_offset
;
2973 case R_X86_64_GOTOFF64
:
2974 /* Relocation is relative to the start of the global offset
2977 /* Check to make sure it isn't a protected function or data
2978 symbol for shared library since it may not be local when
2979 used as function address or with copy relocation. We also
2980 need to make sure that a symbol is referenced locally. */
2981 if (bfd_link_pic (info
) && h
)
2983 if (!h
->def_regular
)
2987 switch (ELF_ST_VISIBILITY (h
->other
))
2990 v
= _("hidden symbol");
2993 v
= _("internal symbol");
2996 v
= _("protected symbol");
3004 /* xgettext:c-format */
3005 (_("%pB: relocation R_X86_64_GOTOFF64 against undefined %s"
3006 " `%s' can not be used when making a shared object"),
3007 input_bfd
, v
, h
->root
.root
.string
);
3008 bfd_set_error (bfd_error_bad_value
);
3011 else if (!bfd_link_executable (info
)
3012 && !SYMBOL_REFERENCES_LOCAL_P (info
, h
)
3013 && (h
->type
== STT_FUNC
3014 || h
->type
== STT_OBJECT
)
3015 && ELF_ST_VISIBILITY (h
->other
) == STV_PROTECTED
)
3018 /* xgettext:c-format */
3019 (_("%pB: relocation R_X86_64_GOTOFF64 against protected %s"
3020 " `%s' can not be used when making a shared object"),
3022 h
->type
== STT_FUNC
? "function" : "data",
3023 h
->root
.root
.string
);
3024 bfd_set_error (bfd_error_bad_value
);
3029 /* Note that sgot is not involved in this
3030 calculation. We always want the start of .got.plt. If we
3031 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
3032 permitted by the ABI, we might have to change this
3034 relocation
-= htab
->elf
.sgotplt
->output_section
->vma
3035 + htab
->elf
.sgotplt
->output_offset
;
3038 case R_X86_64_GOTPC32
:
3039 case R_X86_64_GOTPC64
:
3040 /* Use global offset table as symbol value. */
3041 relocation
= htab
->elf
.sgotplt
->output_section
->vma
3042 + htab
->elf
.sgotplt
->output_offset
;
3043 unresolved_reloc
= false;
3046 case R_X86_64_PLTOFF64
:
3047 /* Relocation is PLT entry relative to GOT. For local
3048 symbols it's the symbol itself relative to GOT. */
3050 /* See PLT32 handling. */
3051 && (h
->plt
.offset
!= (bfd_vma
) -1
3052 || eh
->plt_got
.offset
!= (bfd_vma
) -1)
3053 && htab
->elf
.splt
!= NULL
)
3055 if (eh
->plt_got
.offset
!= (bfd_vma
) -1)
3057 /* Use the GOT PLT. */
3058 resolved_plt
= htab
->plt_got
;
3059 plt_offset
= eh
->plt_got
.offset
;
3061 else if (htab
->plt_second
!= NULL
)
3063 resolved_plt
= htab
->plt_second
;
3064 plt_offset
= eh
->plt_second
.offset
;
3068 resolved_plt
= htab
->elf
.splt
;
3069 plt_offset
= h
->plt
.offset
;
3072 relocation
= (resolved_plt
->output_section
->vma
3073 + resolved_plt
->output_offset
3075 unresolved_reloc
= false;
3078 relocation
-= htab
->elf
.sgotplt
->output_section
->vma
3079 + htab
->elf
.sgotplt
->output_offset
;
3082 case R_X86_64_PLT32
:
3083 case R_X86_64_PLT32_BND
:
3084 /* Relocation is to the entry for this symbol in the
3085 procedure linkage table. */
3087 /* Resolve a PLT32 reloc against a local symbol directly,
3088 without using the procedure linkage table. */
3092 if ((h
->plt
.offset
== (bfd_vma
) -1
3093 && eh
->plt_got
.offset
== (bfd_vma
) -1)
3094 || htab
->elf
.splt
== NULL
)
3096 /* We didn't make a PLT entry for this symbol. This
3097 happens when statically linking PIC code, or when
3098 using -Bsymbolic. */
3103 if (h
->plt
.offset
!= (bfd_vma
) -1)
3105 if (htab
->plt_second
!= NULL
)
3107 resolved_plt
= htab
->plt_second
;
3108 plt_offset
= eh
->plt_second
.offset
;
3112 resolved_plt
= htab
->elf
.splt
;
3113 plt_offset
= h
->plt
.offset
;
3118 /* Use the GOT PLT. */
3119 resolved_plt
= htab
->plt_got
;
3120 plt_offset
= eh
->plt_got
.offset
;
3123 relocation
= (resolved_plt
->output_section
->vma
3124 + resolved_plt
->output_offset
3126 unresolved_reloc
= false;
3129 case R_X86_64_SIZE32
:
3130 case R_X86_64_SIZE64
:
3131 /* Set to symbol size. */
3132 relocation
= st_size
;
3138 case R_X86_64_PC32_BND
:
3139 /* Don't complain about -fPIC if the symbol is undefined when
3140 building executable unless it is unresolved weak symbol,
3141 references a dynamic definition in PIE or -z nocopyreloc
3144 = (info
->nocopyreloc
3146 && !h
->root
.linker_def
3147 && !h
->root
.ldscript_def
3148 && eh
->def_protected
3149 && elf_has_no_copy_on_protected (h
->root
.u
.def
.section
->owner
)));
3151 if ((input_section
->flags
& SEC_ALLOC
) != 0
3152 && (input_section
->flags
& SEC_READONLY
) != 0
3154 && ((bfd_link_executable (info
)
3155 && ((h
->root
.type
== bfd_link_hash_undefweak
3157 || !UNDEFINED_WEAK_RESOLVED_TO_ZERO (info
,
3159 || (bfd_link_pie (info
)
3160 && !SYMBOL_DEFINED_NON_SHARED_P (h
)
3164 && !(h
->root
.u
.def
.section
->flags
& SEC_CODE
))))
3165 || bfd_link_dll (info
)))
3168 if (SYMBOL_REFERENCES_LOCAL_P (info
, h
))
3170 /* Symbol is referenced locally. Make sure it is
3172 fail
= !SYMBOL_DEFINED_NON_SHARED_P (h
);
3174 else if (bfd_link_pie (info
))
3176 /* We can only use PC-relative relocations in PIE
3177 from non-code sections. */
3178 if (h
->type
== STT_FUNC
3179 && (sec
->flags
& SEC_CODE
) != 0)
3182 else if (no_copyreloc_p
|| bfd_link_dll (info
))
3184 /* Symbol doesn't need copy reloc and isn't
3185 referenced locally. Don't allow PC-relative
3186 relocations against default and protected
3187 symbols since address of protected function
3188 and location of protected data may not be in
3189 the shared object. */
3190 fail
= (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
3191 || ELF_ST_VISIBILITY (h
->other
) == STV_PROTECTED
);
3195 return elf_x86_64_need_pic (info
, input_bfd
, input_section
,
3196 h
, NULL
, NULL
, howto
);
3198 /* Since x86-64 has PC-relative PLT, we can use PLT in PIE
3199 as function address. */
3201 && (input_section
->flags
& SEC_CODE
) == 0
3202 && bfd_link_pie (info
)
3203 && h
->type
== STT_FUNC
3214 /* FIXME: The ABI says the linker should make sure the value is
3215 the same when it's zeroextended to 64 bit. */
3218 if ((input_section
->flags
& SEC_ALLOC
) == 0)
3221 need_copy_reloc_in_pie
= (bfd_link_pie (info
)
3226 == bfd_link_hash_undefined
))
3227 && (X86_PCREL_TYPE_P (r_type
)
3228 || X86_SIZE_TYPE_P (r_type
)));
3230 if (GENERATE_DYNAMIC_RELOCATION_P (info
, eh
, r_type
, sec
,
3231 need_copy_reloc_in_pie
,
3232 resolved_to_zero
, false))
3234 Elf_Internal_Rela outrel
;
3235 bool skip
, relocate
;
3237 const char *relative_reloc_name
= NULL
;
3239 /* When generating a shared object, these relocations
3240 are copied into the output file to be resolved at run
3246 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3248 if (outrel
.r_offset
== (bfd_vma
) -1)
3250 else if (outrel
.r_offset
== (bfd_vma
) -2)
3251 skip
= true, relocate
= true;
3253 outrel
.r_offset
+= (input_section
->output_section
->vma
3254 + input_section
->output_offset
);
3257 memset (&outrel
, 0, sizeof outrel
);
3259 else if (COPY_INPUT_RELOC_P (info
, h
, r_type
))
3261 outrel
.r_info
= htab
->r_info (h
->dynindx
, r_type
);
3262 outrel
.r_addend
= rel
->r_addend
;
3266 /* This symbol is local, or marked to become local.
3267 When relocation overflow check is disabled, we
3268 convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */
3269 if (r_type
== htab
->pointer_r_type
3270 || (r_type
== R_X86_64_32
3271 && htab
->params
->no_reloc_overflow_check
))
3274 outrel
.r_info
= htab
->r_info (0, R_X86_64_RELATIVE
);
3275 outrel
.r_addend
= relocation
+ rel
->r_addend
;
3276 relative_reloc_name
= "R_X86_64_RELATIVE";
3278 else if (r_type
== R_X86_64_64
3279 && !ABI_64_P (output_bfd
))
3282 outrel
.r_info
= htab
->r_info (0,
3283 R_X86_64_RELATIVE64
);
3284 outrel
.r_addend
= relocation
+ rel
->r_addend
;
3285 relative_reloc_name
= "R_X86_64_RELATIVE64";
3286 /* Check addend overflow. */
3287 if ((outrel
.r_addend
& 0x80000000)
3288 != (rel
->r_addend
& 0x80000000))
3291 int addend
= rel
->r_addend
;
3292 if (h
&& h
->root
.root
.string
)
3293 name
= h
->root
.root
.string
;
3295 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
,
3298 /* xgettext:c-format */
3299 (_("%pB: addend %s%#x in relocation %s against "
3300 "symbol `%s' at %#" PRIx64
3301 " in section `%pA' is out of range"),
3302 input_bfd
, addend
< 0 ? "-" : "", addend
,
3303 howto
->name
, name
, (uint64_t) rel
->r_offset
,
3305 bfd_set_error (bfd_error_bad_value
);
3313 if (bfd_is_abs_section (sec
))
3315 else if (sec
== NULL
|| sec
->owner
== NULL
)
3317 bfd_set_error (bfd_error_bad_value
);
3324 /* We are turning this relocation into one
3325 against a section symbol. It would be
3326 proper to subtract the symbol's value,
3327 osec->vma, from the emitted reloc addend,
3328 but ld.so expects buggy relocs. */
3329 osec
= sec
->output_section
;
3330 sindx
= elf_section_data (osec
)->dynindx
;
3333 asection
*oi
= htab
->elf
.text_index_section
;
3334 sindx
= elf_section_data (oi
)->dynindx
;
3336 BFD_ASSERT (sindx
!= 0);
3339 outrel
.r_info
= htab
->r_info (sindx
, r_type
);
3340 outrel
.r_addend
= relocation
+ rel
->r_addend
;
3344 sreloc
= elf_section_data (input_section
)->sreloc
;
3346 if (sreloc
== NULL
|| sreloc
->contents
== NULL
)
3348 r
= bfd_reloc_notsupported
;
3349 goto check_relocation_error
;
3352 if (relative_reloc_name
3353 && htab
->params
->report_relative_reloc
)
3354 _bfd_x86_elf_link_report_relative_reloc
3355 (info
, input_section
, h
, sym
, relative_reloc_name
,
3358 elf_append_rela (output_bfd
, sreloc
, &outrel
);
3360 /* If this reloc is against an external symbol, we do
3361 not want to fiddle with the addend. Otherwise, we
3362 need to include the symbol value so that it becomes
3363 an addend for the dynamic reloc. */
3370 case R_X86_64_TLSGD
:
3371 case R_X86_64_GOTPC32_TLSDESC
:
3372 case R_X86_64_TLSDESC_CALL
:
3373 case R_X86_64_GOTTPOFF
:
3374 tls_type
= GOT_UNKNOWN
;
3375 if (h
== NULL
&& local_got_offsets
)
3376 tls_type
= elf_x86_local_got_tls_type (input_bfd
) [r_symndx
];
3378 tls_type
= elf_x86_hash_entry (h
)->tls_type
;
3380 r_type_tls
= r_type
;
3381 if (! elf_x86_64_tls_transition (info
, input_bfd
,
3382 input_section
, contents
,
3383 symtab_hdr
, sym_hashes
,
3384 &r_type_tls
, tls_type
, rel
,
3385 relend
, h
, r_symndx
, true))
3388 if (r_type_tls
== R_X86_64_TPOFF32
)
3390 bfd_vma roff
= rel
->r_offset
;
3392 BFD_ASSERT (! unresolved_reloc
);
3394 if (r_type
== R_X86_64_TLSGD
)
3396 /* GD->LE transition. For 64bit, change
3397 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3398 .word 0x6666; rex64; call __tls_get_addr@PLT
3400 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3402 call *__tls_get_addr@GOTPCREL(%rip)
3403 which may be converted to
3404 addr32 call __tls_get_addr
3407 leaq foo@tpoff(%rax), %rax
3409 leaq foo@tlsgd(%rip), %rdi
3410 .word 0x6666; rex64; call __tls_get_addr@PLT
3412 leaq foo@tlsgd(%rip), %rdi
3414 call *__tls_get_addr@GOTPCREL(%rip)
3415 which may be converted to
3416 addr32 call __tls_get_addr
3419 leaq foo@tpoff(%rax), %rax
3420 For largepic, change:
3421 leaq foo@tlsgd(%rip), %rdi
3422 movabsq $__tls_get_addr@pltoff, %rax
3427 leaq foo@tpoff(%rax), %rax
3428 nopw 0x0(%rax,%rax,1) */
3430 if (ABI_64_P (output_bfd
))
3432 if (contents
[roff
+ 5] == 0xb8)
3435 || (roff
- 3 + 22) > input_section
->size
)
3438 info
->callbacks
->einfo
3439 (_("%F%P: corrupt input: %pB\n"),
3443 memcpy (contents
+ roff
- 3,
3444 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
3445 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3451 || (roff
- 4 + 16) > input_section
->size
)
3453 memcpy (contents
+ roff
- 4,
3454 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3461 || (roff
- 3 + 15) > input_section
->size
)
3463 memcpy (contents
+ roff
- 3,
3464 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3467 bfd_put_32 (output_bfd
,
3468 elf_x86_64_tpoff (info
, relocation
),
3469 contents
+ roff
+ 8 + largepic
);
3470 /* Skip R_X86_64_PC32, R_X86_64_PLT32,
3471 R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */
3476 else if (r_type
== R_X86_64_GOTPC32_TLSDESC
)
3478 /* GDesc -> LE transition.
3479 It's originally something like:
3480 leaq x@tlsdesc(%rip), %rax <--- LP64 mode.
3481 rex leal x@tlsdesc(%rip), %eax <--- X32 mode.
3484 movq $x@tpoff, %rax <--- LP64 mode.
3485 rex movl $x@tpoff, %eax <--- X32 mode.
3488 unsigned int val
, type
;
3492 type
= bfd_get_8 (input_bfd
, contents
+ roff
- 3);
3493 val
= bfd_get_8 (input_bfd
, contents
+ roff
- 1);
3494 bfd_put_8 (output_bfd
,
3495 (type
& 0x48) | ((type
>> 2) & 1),
3496 contents
+ roff
- 3);
3497 bfd_put_8 (output_bfd
, 0xc7, contents
+ roff
- 2);
3498 bfd_put_8 (output_bfd
, 0xc0 | ((val
>> 3) & 7),
3499 contents
+ roff
- 1);
3500 bfd_put_32 (output_bfd
,
3501 elf_x86_64_tpoff (info
, relocation
),
3505 else if (r_type
== R_X86_64_TLSDESC_CALL
)
3507 /* GDesc -> LE transition.
3509 call *(%rax) <--- LP64 mode.
3510 call *(%eax) <--- X32 mode.
3512 xchg %ax,%ax <-- LP64 mode.
3513 nopl (%rax) <-- X32 mode.
3515 unsigned int prefix
= 0;
3516 if (!ABI_64_P (input_bfd
))
3518 /* Check for call *x@tlsdesc(%eax). */
3519 if (contents
[roff
] == 0x67)
3524 bfd_put_8 (output_bfd
, 0x0f, contents
+ roff
);
3525 bfd_put_8 (output_bfd
, 0x1f, contents
+ roff
+ 1);
3526 bfd_put_8 (output_bfd
, 0x00, contents
+ roff
+ 2);
3530 bfd_put_8 (output_bfd
, 0x66, contents
+ roff
);
3531 bfd_put_8 (output_bfd
, 0x90, contents
+ roff
+ 1);
3535 else if (r_type
== R_X86_64_GOTTPOFF
)
3537 /* IE->LE transition:
3538 For 64bit, originally it can be one of:
3539 movq foo@gottpoff(%rip), %reg
3540 addq foo@gottpoff(%rip), %reg
3543 leaq foo(%reg), %reg
3545 For 32bit, originally it can be one of:
3546 movq foo@gottpoff(%rip), %reg
3547 addl foo@gottpoff(%rip), %reg
3550 leal foo(%reg), %reg
3553 unsigned int val
, type
, reg
;
3556 val
= bfd_get_8 (input_bfd
, contents
+ roff
- 3);
3563 type
= bfd_get_8 (input_bfd
, contents
+ roff
- 2);
3564 reg
= bfd_get_8 (input_bfd
, contents
+ roff
- 1);
3573 bfd_put_8 (output_bfd
, 0x49,
3574 contents
+ roff
- 3);
3576 else if (!ABI_64_P (output_bfd
) && val
== 0x44)
3580 bfd_put_8 (output_bfd
, 0x41,
3581 contents
+ roff
- 3);
3583 bfd_put_8 (output_bfd
, 0xc7,
3584 contents
+ roff
- 2);
3585 bfd_put_8 (output_bfd
, 0xc0 | reg
,
3586 contents
+ roff
- 1);
3590 /* addq/addl -> addq/addl - addressing with %rsp/%r12
3596 bfd_put_8 (output_bfd
, 0x49,
3597 contents
+ roff
- 3);
3599 else if (!ABI_64_P (output_bfd
) && val
== 0x44)
3603 bfd_put_8 (output_bfd
, 0x41,
3604 contents
+ roff
- 3);
3606 bfd_put_8 (output_bfd
, 0x81,
3607 contents
+ roff
- 2);
3608 bfd_put_8 (output_bfd
, 0xc0 | reg
,
3609 contents
+ roff
- 1);
3613 /* addq/addl -> leaq/leal */
3618 bfd_put_8 (output_bfd
, 0x4d,
3619 contents
+ roff
- 3);
3621 else if (!ABI_64_P (output_bfd
) && val
== 0x44)
3625 bfd_put_8 (output_bfd
, 0x45,
3626 contents
+ roff
- 3);
3628 bfd_put_8 (output_bfd
, 0x8d,
3629 contents
+ roff
- 2);
3630 bfd_put_8 (output_bfd
, 0x80 | reg
| (reg
<< 3),
3631 contents
+ roff
- 1);
3633 bfd_put_32 (output_bfd
,
3634 elf_x86_64_tpoff (info
, relocation
),
3642 if (htab
->elf
.sgot
== NULL
)
3647 off
= h
->got
.offset
;
3648 offplt
= elf_x86_hash_entry (h
)->tlsdesc_got
;
3652 if (local_got_offsets
== NULL
)
3655 off
= local_got_offsets
[r_symndx
];
3656 offplt
= local_tlsdesc_gotents
[r_symndx
];
3663 Elf_Internal_Rela outrel
;
3667 if (htab
->elf
.srelgot
== NULL
)
3670 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
3672 if (GOT_TLS_GDESC_P (tls_type
))
3674 outrel
.r_info
= htab
->r_info (indx
, R_X86_64_TLSDESC
);
3675 BFD_ASSERT (htab
->sgotplt_jump_table_size
+ offplt
3676 + 2 * GOT_ENTRY_SIZE
<= htab
->elf
.sgotplt
->size
);
3677 outrel
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
3678 + htab
->elf
.sgotplt
->output_offset
3680 + htab
->sgotplt_jump_table_size
);
3681 sreloc
= htab
->elf
.srelplt
;
3683 outrel
.r_addend
= relocation
- _bfd_x86_elf_dtpoff_base (info
);
3685 outrel
.r_addend
= 0;
3686 elf_append_rela (output_bfd
, sreloc
, &outrel
);
3689 sreloc
= htab
->elf
.srelgot
;
3691 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
3692 + htab
->elf
.sgot
->output_offset
+ off
);
3694 if (GOT_TLS_GD_P (tls_type
))
3695 dr_type
= R_X86_64_DTPMOD64
;
3696 else if (GOT_TLS_GDESC_P (tls_type
))
3699 dr_type
= R_X86_64_TPOFF64
;
3701 bfd_put_64 (output_bfd
, 0, htab
->elf
.sgot
->contents
+ off
);
3702 outrel
.r_addend
= 0;
3703 if ((dr_type
== R_X86_64_TPOFF64
3704 || dr_type
== R_X86_64_TLSDESC
) && indx
== 0)
3705 outrel
.r_addend
= relocation
- _bfd_x86_elf_dtpoff_base (info
);
3706 outrel
.r_info
= htab
->r_info (indx
, dr_type
);
3708 elf_append_rela (output_bfd
, sreloc
, &outrel
);
3710 if (GOT_TLS_GD_P (tls_type
))
3714 BFD_ASSERT (! unresolved_reloc
);
3715 bfd_put_64 (output_bfd
,
3716 relocation
- _bfd_x86_elf_dtpoff_base (info
),
3717 htab
->elf
.sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
3721 bfd_put_64 (output_bfd
, 0,
3722 htab
->elf
.sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
3723 outrel
.r_info
= htab
->r_info (indx
,
3725 outrel
.r_offset
+= GOT_ENTRY_SIZE
;
3726 elf_append_rela (output_bfd
, sreloc
,
3735 local_got_offsets
[r_symndx
] |= 1;
3738 if (off
>= (bfd_vma
) -2
3739 && ! GOT_TLS_GDESC_P (tls_type
))
3741 if (r_type_tls
== r_type
)
3743 if (r_type
== R_X86_64_GOTPC32_TLSDESC
3744 || r_type
== R_X86_64_TLSDESC_CALL
)
3745 relocation
= htab
->elf
.sgotplt
->output_section
->vma
3746 + htab
->elf
.sgotplt
->output_offset
3747 + offplt
+ htab
->sgotplt_jump_table_size
;
3749 relocation
= htab
->elf
.sgot
->output_section
->vma
3750 + htab
->elf
.sgot
->output_offset
+ off
;
3751 unresolved_reloc
= false;
3755 bfd_vma roff
= rel
->r_offset
;
3757 if (r_type
== R_X86_64_TLSGD
)
3759 /* GD->IE transition. For 64bit, change
3760 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3761 .word 0x6666; rex64; call __tls_get_addr@PLT
3763 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3765 call *__tls_get_addr@GOTPCREL(%rip
3766 which may be converted to
3767 addr32 call __tls_get_addr
3770 addq foo@gottpoff(%rip), %rax
3772 leaq foo@tlsgd(%rip), %rdi
3773 .word 0x6666; rex64; call __tls_get_addr@PLT
3775 leaq foo@tlsgd(%rip), %rdi
3777 call *__tls_get_addr@GOTPCREL(%rip)
3778 which may be converted to
3779 addr32 call __tls_get_addr
3782 addq foo@gottpoff(%rip), %rax
3783 For largepic, change:
3784 leaq foo@tlsgd(%rip), %rdi
3785 movabsq $__tls_get_addr@pltoff, %rax
3790 addq foo@gottpoff(%rax), %rax
3791 nopw 0x0(%rax,%rax,1) */
3793 if (ABI_64_P (output_bfd
))
3795 if (contents
[roff
+ 5] == 0xb8)
3798 || (roff
- 3 + 22) > input_section
->size
)
3800 memcpy (contents
+ roff
- 3,
3801 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
3802 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3808 || (roff
- 4 + 16) > input_section
->size
)
3810 memcpy (contents
+ roff
- 4,
3811 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3818 || (roff
- 3 + 15) > input_section
->size
)
3820 memcpy (contents
+ roff
- 3,
3821 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3825 relocation
= (htab
->elf
.sgot
->output_section
->vma
3826 + htab
->elf
.sgot
->output_offset
+ off
3829 - input_section
->output_section
->vma
3830 - input_section
->output_offset
3832 bfd_put_32 (output_bfd
, relocation
,
3833 contents
+ roff
+ 8 + largepic
);
3834 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
3839 else if (r_type
== R_X86_64_GOTPC32_TLSDESC
)
3841 /* GDesc -> IE transition.
3842 It's originally something like:
3843 leaq x@tlsdesc(%rip), %rax <--- LP64 mode.
3844 rex leal x@tlsdesc(%rip), %eax <--- X32 mode.
3847 # before xchg %ax,%ax in LP64 mode.
3848 movq x@gottpoff(%rip), %rax
3849 # before nopl (%rax) in X32 mode.
3850 rex movl x@gottpoff(%rip), %eax
3853 /* Now modify the instruction as appropriate. To
3854 turn a lea into a mov in the form we use it, it
3855 suffices to change the second byte from 0x8d to
3859 bfd_put_8 (output_bfd
, 0x8b, contents
+ roff
- 2);
3861 bfd_put_32 (output_bfd
,
3862 htab
->elf
.sgot
->output_section
->vma
3863 + htab
->elf
.sgot
->output_offset
+ off
3865 - input_section
->output_section
->vma
3866 - input_section
->output_offset
3871 else if (r_type
== R_X86_64_TLSDESC_CALL
)
3873 /* GDesc -> IE transition.
3875 call *(%rax) <--- LP64 mode.
3876 call *(%eax) <--- X32 mode.
3879 xchg %ax, %ax <-- LP64 mode.
3880 nopl (%rax) <-- X32 mode.
3883 unsigned int prefix
= 0;
3884 if (!ABI_64_P (input_bfd
))
3886 /* Check for call *x@tlsdesc(%eax). */
3887 if (contents
[roff
] == 0x67)
3892 bfd_put_8 (output_bfd
, 0x0f, contents
+ roff
);
3893 bfd_put_8 (output_bfd
, 0x1f, contents
+ roff
+ 1);
3894 bfd_put_8 (output_bfd
, 0x00, contents
+ roff
+ 2);
3898 bfd_put_8 (output_bfd
, 0x66, contents
+ roff
);
3899 bfd_put_8 (output_bfd
, 0x90, contents
+ roff
+ 1);
3908 case R_X86_64_TLSLD
:
3909 if (! elf_x86_64_tls_transition (info
, input_bfd
,
3910 input_section
, contents
,
3911 symtab_hdr
, sym_hashes
,
3912 &r_type
, GOT_UNKNOWN
, rel
,
3913 relend
, h
, r_symndx
, true))
3916 if (r_type
!= R_X86_64_TLSLD
)
3918 /* LD->LE transition:
3919 leaq foo@tlsld(%rip), %rdi
3920 call __tls_get_addr@PLT
3921 For 64bit, we change it into:
3922 .word 0x6666; .byte 0x66; movq %fs:0, %rax
3923 For 32bit, we change it into:
3924 nopl 0x0(%rax); movl %fs:0, %eax
3926 leaq foo@tlsld(%rip), %rdi;
3927 call *__tls_get_addr@GOTPCREL(%rip)
3928 which may be converted to
3929 addr32 call __tls_get_addr
3930 For 64bit, we change it into:
3931 .word 0x6666; .word 0x6666; movq %fs:0, %rax
3932 For 32bit, we change it into:
3933 nopw 0x0(%rax); movl %fs:0, %eax
3934 For largepic, change:
3935 leaq foo@tlsgd(%rip), %rdi
3936 movabsq $__tls_get_addr@pltoff, %rax
3940 data16 data16 data16 nopw %cs:0x0(%rax,%rax,1)
3943 BFD_ASSERT (r_type
== R_X86_64_TPOFF32
);
3944 if (ABI_64_P (output_bfd
))
3946 if ((rel
->r_offset
+ 5) >= input_section
->size
)
3948 if (contents
[rel
->r_offset
+ 5] == 0xb8)
3950 if (rel
->r_offset
< 3
3951 || (rel
->r_offset
- 3 + 22) > input_section
->size
)
3953 memcpy (contents
+ rel
->r_offset
- 3,
3954 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
3955 "\x64\x48\x8b\x04\x25\0\0\0", 22);
3957 else if (contents
[rel
->r_offset
+ 4] == 0xff
3958 || contents
[rel
->r_offset
+ 4] == 0x67)
3960 if (rel
->r_offset
< 3
3961 || (rel
->r_offset
- 3 + 13) > input_section
->size
)
3963 memcpy (contents
+ rel
->r_offset
- 3,
3964 "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0",
3970 if (rel
->r_offset
< 3
3971 || (rel
->r_offset
- 3 + 12) > input_section
->size
)
3973 memcpy (contents
+ rel
->r_offset
- 3,
3974 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
3979 if ((rel
->r_offset
+ 4) >= input_section
->size
)
3981 if (contents
[rel
->r_offset
+ 4] == 0xff)
3983 if (rel
->r_offset
< 3
3984 || (rel
->r_offset
- 3 + 13) > input_section
->size
)
3986 memcpy (contents
+ rel
->r_offset
- 3,
3987 "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0",
3992 if (rel
->r_offset
< 3
3993 || (rel
->r_offset
- 3 + 12) > input_section
->size
)
3995 memcpy (contents
+ rel
->r_offset
- 3,
3996 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
3999 /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX
4000 and R_X86_64_PLTOFF64. */
4006 if (htab
->elf
.sgot
== NULL
)
4009 off
= htab
->tls_ld_or_ldm_got
.offset
;
4014 Elf_Internal_Rela outrel
;
4016 if (htab
->elf
.srelgot
== NULL
)
4019 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
4020 + htab
->elf
.sgot
->output_offset
+ off
);
4022 bfd_put_64 (output_bfd
, 0,
4023 htab
->elf
.sgot
->contents
+ off
);
4024 bfd_put_64 (output_bfd
, 0,
4025 htab
->elf
.sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
4026 outrel
.r_info
= htab
->r_info (0, R_X86_64_DTPMOD64
);
4027 outrel
.r_addend
= 0;
4028 elf_append_rela (output_bfd
, htab
->elf
.srelgot
,
4030 htab
->tls_ld_or_ldm_got
.offset
|= 1;
4032 relocation
= htab
->elf
.sgot
->output_section
->vma
4033 + htab
->elf
.sgot
->output_offset
+ off
;
4034 unresolved_reloc
= false;
4037 case R_X86_64_DTPOFF32
:
4038 if (!bfd_link_executable (info
)
4039 || (input_section
->flags
& SEC_CODE
) == 0)
4040 relocation
-= _bfd_x86_elf_dtpoff_base (info
);
4042 relocation
= elf_x86_64_tpoff (info
, relocation
);
4045 case R_X86_64_TPOFF32
:
4046 case R_X86_64_TPOFF64
:
4047 BFD_ASSERT (bfd_link_executable (info
));
4048 relocation
= elf_x86_64_tpoff (info
, relocation
);
4051 case R_X86_64_DTPOFF64
:
4052 BFD_ASSERT ((input_section
->flags
& SEC_CODE
) == 0);
4053 relocation
-= _bfd_x86_elf_dtpoff_base (info
);
4060 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4061 because such sections are not SEC_ALLOC and thus ld.so will
4062 not process them. */
4063 if (unresolved_reloc
4064 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
4066 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
4067 rel
->r_offset
) != (bfd_vma
) -1)
4072 sec
= h
->root
.u
.def
.section
;
4073 if ((info
->nocopyreloc
4074 || (eh
->def_protected
4075 && elf_has_no_copy_on_protected (h
->root
.u
.def
.section
->owner
)))
4076 && !(h
->root
.u
.def
.section
->flags
& SEC_CODE
))
4077 return elf_x86_64_need_pic (info
, input_bfd
, input_section
,
4078 h
, NULL
, NULL
, howto
);
4083 /* xgettext:c-format */
4084 (_("%pB(%pA+%#" PRIx64
"): "
4085 "unresolvable %s relocation against symbol `%s'"),
4088 (uint64_t) rel
->r_offset
,
4090 h
->root
.root
.string
);
4096 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4097 contents
, rel
->r_offset
,
4098 relocation
, rel
->r_addend
);
4100 check_relocation_error
:
4101 if (r
!= bfd_reloc_ok
)
4106 name
= h
->root
.root
.string
;
4109 name
= bfd_elf_string_from_elf_section (input_bfd
,
4110 symtab_hdr
->sh_link
,
4115 name
= bfd_section_name (sec
);
4118 if (r
== bfd_reloc_overflow
)
4120 if (converted_reloc
)
4122 info
->callbacks
->einfo
4123 ("%X%H:", input_bfd
, input_section
, rel
->r_offset
);
4124 info
->callbacks
->einfo
4125 (_(" failed to convert GOTPCREL relocation against "
4126 "'%s'; relink with --no-relax\n"),
4131 (*info
->callbacks
->reloc_overflow
)
4132 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
4133 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
4138 /* xgettext:c-format */
4139 (_("%pB(%pA+%#" PRIx64
"): reloc against `%s': error %d"),
4140 input_bfd
, input_section
,
4141 (uint64_t) rel
->r_offset
, name
, (int) r
);
4152 Elf_Internal_Shdr
*rel_hdr
;
4153 size_t deleted
= rel
- wrel
;
4155 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
4156 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
4157 if (rel_hdr
->sh_size
== 0)
4159 /* It is too late to remove an empty reloc section. Leave
4161 ??? What is wrong with an empty section??? */
4162 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
4165 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
4166 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
4167 input_section
->reloc_count
-= deleted
;
4173 /* Finish up dynamic symbol handling. We set the contents of various
4174 dynamic sections here. */
4177 elf_x86_64_finish_dynamic_symbol (bfd
*output_bfd
,
4178 struct bfd_link_info
*info
,
4179 struct elf_link_hash_entry
*h
,
4180 Elf_Internal_Sym
*sym
)
4182 struct elf_x86_link_hash_table
*htab
;
4183 bool use_plt_second
;
4184 struct elf_x86_link_hash_entry
*eh
;
4185 bool local_undefweak
;
4187 htab
= elf_x86_hash_table (info
, X86_64_ELF_DATA
);
4191 /* Use the second PLT section only if there is .plt section. */
4192 use_plt_second
= htab
->elf
.splt
!= NULL
&& htab
->plt_second
!= NULL
;
4194 eh
= (struct elf_x86_link_hash_entry
*) h
;
4195 if (eh
->no_finish_dynamic_symbol
)
4198 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
4199 resolved undefined weak symbols in executable so that their
4200 references have value 0 at run-time. */
4201 local_undefweak
= UNDEFINED_WEAK_RESOLVED_TO_ZERO (info
, eh
);
4203 if (h
->plt
.offset
!= (bfd_vma
) -1)
4206 bfd_vma got_offset
, plt_offset
;
4207 Elf_Internal_Rela rela
;
4209 asection
*plt
, *gotplt
, *relplt
, *resolved_plt
;
4210 const struct elf_backend_data
*bed
;
4211 bfd_vma plt_got_pcrel_offset
;
4213 /* When building a static executable, use .iplt, .igot.plt and
4214 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4215 if (htab
->elf
.splt
!= NULL
)
4217 plt
= htab
->elf
.splt
;
4218 gotplt
= htab
->elf
.sgotplt
;
4219 relplt
= htab
->elf
.srelplt
;
4223 plt
= htab
->elf
.iplt
;
4224 gotplt
= htab
->elf
.igotplt
;
4225 relplt
= htab
->elf
.irelplt
;
4228 VERIFY_PLT_ENTRY (info
, h
, plt
, gotplt
, relplt
, local_undefweak
)
4230 /* Get the index in the procedure linkage table which
4231 corresponds to this symbol. This is the index of this symbol
4232 in all the symbols for which we are making plt entries. The
4233 first entry in the procedure linkage table is reserved.
4235 Get the offset into the .got table of the entry that
4236 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
4237 bytes. The first three are reserved for the dynamic linker.
4239 For static executables, we don't reserve anything. */
4241 if (plt
== htab
->elf
.splt
)
4243 got_offset
= (h
->plt
.offset
/ htab
->plt
.plt_entry_size
4244 - htab
->plt
.has_plt0
);
4245 got_offset
= (got_offset
+ 3) * GOT_ENTRY_SIZE
;
4249 got_offset
= h
->plt
.offset
/ htab
->plt
.plt_entry_size
;
4250 got_offset
= got_offset
* GOT_ENTRY_SIZE
;
4253 /* Fill in the entry in the procedure linkage table. */
4254 memcpy (plt
->contents
+ h
->plt
.offset
, htab
->plt
.plt_entry
,
4255 htab
->plt
.plt_entry_size
);
4258 memcpy (htab
->plt_second
->contents
+ eh
->plt_second
.offset
,
4259 htab
->non_lazy_plt
->plt_entry
,
4260 htab
->non_lazy_plt
->plt_entry_size
);
4262 resolved_plt
= htab
->plt_second
;
4263 plt_offset
= eh
->plt_second
.offset
;
4268 plt_offset
= h
->plt
.offset
;
4271 /* Insert the relocation positions of the plt section. */
4273 /* Put offset the PC-relative instruction referring to the GOT entry,
4274 subtracting the size of that instruction. */
4275 plt_got_pcrel_offset
= (gotplt
->output_section
->vma
4276 + gotplt
->output_offset
4278 - resolved_plt
->output_section
->vma
4279 - resolved_plt
->output_offset
4281 - htab
->plt
.plt_got_insn_size
);
4283 /* Check PC-relative offset overflow in PLT entry. */
4284 if ((plt_got_pcrel_offset
+ 0x80000000) > 0xffffffff)
4285 /* xgettext:c-format */
4286 info
->callbacks
->einfo (_("%F%pB: PC-relative offset overflow in PLT entry for `%s'\n"),
4287 output_bfd
, h
->root
.root
.string
);
4289 bfd_put_32 (output_bfd
, plt_got_pcrel_offset
,
4290 (resolved_plt
->contents
+ plt_offset
4291 + htab
->plt
.plt_got_offset
));
4293 /* Fill in the entry in the global offset table, initially this
4294 points to the second part of the PLT entry. Leave the entry
4295 as zero for undefined weak symbol in PIE. No PLT relocation
4296 against undefined weak symbol in PIE. */
4297 if (!local_undefweak
)
4299 if (htab
->plt
.has_plt0
)
4300 bfd_put_64 (output_bfd
, (plt
->output_section
->vma
4301 + plt
->output_offset
4303 + htab
->lazy_plt
->plt_lazy_offset
),
4304 gotplt
->contents
+ got_offset
);
4306 /* Fill in the entry in the .rela.plt section. */
4307 rela
.r_offset
= (gotplt
->output_section
->vma
4308 + gotplt
->output_offset
4310 if (PLT_LOCAL_IFUNC_P (info
, h
))
4312 info
->callbacks
->minfo (_("Local IFUNC function `%s' in %pB\n"),
4313 h
->root
.root
.string
,
4314 h
->root
.u
.def
.section
->owner
);
4316 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4317 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
4318 rela
.r_info
= htab
->r_info (0, R_X86_64_IRELATIVE
);
4319 rela
.r_addend
= (h
->root
.u
.def
.value
4320 + h
->root
.u
.def
.section
->output_section
->vma
4321 + h
->root
.u
.def
.section
->output_offset
);
4323 if (htab
->params
->report_relative_reloc
)
4324 _bfd_x86_elf_link_report_relative_reloc
4325 (info
, relplt
, h
, sym
, "R_X86_64_IRELATIVE", &rela
);
4327 /* R_X86_64_IRELATIVE comes last. */
4328 plt_index
= htab
->next_irelative_index
--;
4332 rela
.r_info
= htab
->r_info (h
->dynindx
, R_X86_64_JUMP_SLOT
);
4334 plt_index
= htab
->next_jump_slot_index
++;
4337 /* Don't fill the second and third slots in PLT entry for
4338 static executables nor without PLT0. */
4339 if (plt
== htab
->elf
.splt
&& htab
->plt
.has_plt0
)
4342 = h
->plt
.offset
+ htab
->lazy_plt
->plt_plt_insn_end
;
4344 /* Put relocation index. */
4345 bfd_put_32 (output_bfd
, plt_index
,
4346 (plt
->contents
+ h
->plt
.offset
4347 + htab
->lazy_plt
->plt_reloc_offset
));
4349 /* Put offset for jmp .PLT0 and check for overflow. We don't
4350 check relocation index for overflow since branch displacement
4351 will overflow first. */
4352 if (plt0_offset
> 0x80000000)
4353 /* xgettext:c-format */
4354 info
->callbacks
->einfo (_("%F%pB: branch displacement overflow in PLT entry for `%s'\n"),
4355 output_bfd
, h
->root
.root
.string
);
4356 bfd_put_32 (output_bfd
, - plt0_offset
,
4357 (plt
->contents
+ h
->plt
.offset
4358 + htab
->lazy_plt
->plt_plt_offset
));
4361 bed
= get_elf_backend_data (output_bfd
);
4362 loc
= relplt
->contents
+ plt_index
* bed
->s
->sizeof_rela
;
4363 bed
->s
->swap_reloca_out (output_bfd
, &rela
, loc
);
4366 else if (eh
->plt_got
.offset
!= (bfd_vma
) -1)
4368 bfd_vma got_offset
, plt_offset
;
4369 asection
*plt
, *got
;
4371 int32_t got_pcrel_offset
;
4373 /* Set the entry in the GOT procedure linkage table. */
4374 plt
= htab
->plt_got
;
4375 got
= htab
->elf
.sgot
;
4376 got_offset
= h
->got
.offset
;
4378 if (got_offset
== (bfd_vma
) -1
4379 || (h
->type
== STT_GNU_IFUNC
&& h
->def_regular
)
4384 /* Use the non-lazy PLT entry template for the GOT PLT since they
4385 are the identical. */
4386 /* Fill in the entry in the GOT procedure linkage table. */
4387 plt_offset
= eh
->plt_got
.offset
;
4388 memcpy (plt
->contents
+ plt_offset
,
4389 htab
->non_lazy_plt
->plt_entry
,
4390 htab
->non_lazy_plt
->plt_entry_size
);
4392 /* Put offset the PC-relative instruction referring to the GOT
4393 entry, subtracting the size of that instruction. */
4394 got_pcrel_offset
= (got
->output_section
->vma
4395 + got
->output_offset
4397 - plt
->output_section
->vma
4398 - plt
->output_offset
4400 - htab
->non_lazy_plt
->plt_got_insn_size
);
4402 /* Check PC-relative offset overflow in GOT PLT entry. */
4403 got_after_plt
= got
->output_section
->vma
> plt
->output_section
->vma
;
4404 if ((got_after_plt
&& got_pcrel_offset
< 0)
4405 || (!got_after_plt
&& got_pcrel_offset
> 0))
4406 /* xgettext:c-format */
4407 info
->callbacks
->einfo (_("%F%pB: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
4408 output_bfd
, h
->root
.root
.string
);
4410 bfd_put_32 (output_bfd
, got_pcrel_offset
,
4411 (plt
->contents
+ plt_offset
4412 + htab
->non_lazy_plt
->plt_got_offset
));
4415 if (!local_undefweak
4417 && (h
->plt
.offset
!= (bfd_vma
) -1
4418 || eh
->plt_got
.offset
!= (bfd_vma
) -1))
4420 /* Mark the symbol as undefined, rather than as defined in
4421 the .plt section. Leave the value if there were any
4422 relocations where pointer equality matters (this is a clue
4423 for the dynamic linker, to make function pointer
4424 comparisons work between an application and shared
4425 library), otherwise set it to zero. If a function is only
4426 called from a binary, there is no need to slow down
4427 shared libraries because of that. */
4428 sym
->st_shndx
= SHN_UNDEF
;
4429 if (!h
->pointer_equality_needed
)
4433 _bfd_x86_elf_link_fixup_ifunc_symbol (info
, htab
, h
, sym
);
4435 /* Don't generate dynamic GOT relocation against undefined weak
4436 symbol in executable. */
4437 if (h
->got
.offset
!= (bfd_vma
) -1
4438 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry (h
)->tls_type
)
4439 && elf_x86_hash_entry (h
)->tls_type
!= GOT_TLS_IE
4440 && !local_undefweak
)
4442 Elf_Internal_Rela rela
;
4443 asection
*relgot
= htab
->elf
.srelgot
;
4444 const char *relative_reloc_name
= NULL
;
4446 /* This symbol has an entry in the global offset table. Set it
4448 if (htab
->elf
.sgot
== NULL
|| htab
->elf
.srelgot
== NULL
)
4451 rela
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
4452 + htab
->elf
.sgot
->output_offset
4453 + (h
->got
.offset
&~ (bfd_vma
) 1));
4455 /* If this is a static link, or it is a -Bsymbolic link and the
4456 symbol is defined locally or was forced to be local because
4457 of a version file, we just want to emit a RELATIVE reloc.
4458 The entry in the global offset table will already have been
4459 initialized in the relocate_section function. */
4461 && h
->type
== STT_GNU_IFUNC
)
4463 if (h
->plt
.offset
== (bfd_vma
) -1)
4465 /* STT_GNU_IFUNC is referenced without PLT. */
4466 if (htab
->elf
.splt
== NULL
)
4468 /* use .rel[a].iplt section to store .got relocations
4469 in static executable. */
4470 relgot
= htab
->elf
.irelplt
;
4472 if (SYMBOL_REFERENCES_LOCAL_P (info
, h
))
4474 info
->callbacks
->minfo (_("Local IFUNC function `%s' in %pB\n"),
4475 h
->root
.root
.string
,
4476 h
->root
.u
.def
.section
->owner
);
4478 rela
.r_info
= htab
->r_info (0,
4479 R_X86_64_IRELATIVE
);
4480 rela
.r_addend
= (h
->root
.u
.def
.value
4481 + h
->root
.u
.def
.section
->output_section
->vma
4482 + h
->root
.u
.def
.section
->output_offset
);
4483 relative_reloc_name
= "R_X86_64_IRELATIVE";
4488 else if (bfd_link_pic (info
))
4490 /* Generate R_X86_64_GLOB_DAT. */
4498 if (!h
->pointer_equality_needed
)
4501 /* For non-shared object, we can't use .got.plt, which
4502 contains the real function addres if we need pointer
4503 equality. We load the GOT entry with the PLT entry. */
4504 if (htab
->plt_second
!= NULL
)
4506 plt
= htab
->plt_second
;
4507 plt_offset
= eh
->plt_second
.offset
;
4511 plt
= htab
->elf
.splt
? htab
->elf
.splt
: htab
->elf
.iplt
;
4512 plt_offset
= h
->plt
.offset
;
4514 bfd_put_64 (output_bfd
, (plt
->output_section
->vma
4515 + plt
->output_offset
4517 htab
->elf
.sgot
->contents
+ h
->got
.offset
);
4521 else if (bfd_link_pic (info
)
4522 && SYMBOL_REFERENCES_LOCAL_P (info
, h
))
4524 if (!SYMBOL_DEFINED_NON_SHARED_P (h
))
4526 BFD_ASSERT((h
->got
.offset
& 1) != 0);
4527 rela
.r_info
= htab
->r_info (0, R_X86_64_RELATIVE
);
4528 rela
.r_addend
= (h
->root
.u
.def
.value
4529 + h
->root
.u
.def
.section
->output_section
->vma
4530 + h
->root
.u
.def
.section
->output_offset
);
4531 relative_reloc_name
= "R_X86_64_RELATIVE";
4535 BFD_ASSERT((h
->got
.offset
& 1) == 0);
4537 bfd_put_64 (output_bfd
, (bfd_vma
) 0,
4538 htab
->elf
.sgot
->contents
+ h
->got
.offset
);
4539 rela
.r_info
= htab
->r_info (h
->dynindx
, R_X86_64_GLOB_DAT
);
4543 if (relative_reloc_name
!= NULL
4544 && htab
->params
->report_relative_reloc
)
4545 _bfd_x86_elf_link_report_relative_reloc
4546 (info
, relgot
, h
, sym
, relative_reloc_name
, &rela
);
4548 elf_append_rela (output_bfd
, relgot
, &rela
);
4553 Elf_Internal_Rela rela
;
4556 /* This symbol needs a copy reloc. Set it up. */
4557 VERIFY_COPY_RELOC (h
, htab
)
4559 rela
.r_offset
= (h
->root
.u
.def
.value
4560 + h
->root
.u
.def
.section
->output_section
->vma
4561 + h
->root
.u
.def
.section
->output_offset
);
4562 rela
.r_info
= htab
->r_info (h
->dynindx
, R_X86_64_COPY
);
4564 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
4565 s
= htab
->elf
.sreldynrelro
;
4567 s
= htab
->elf
.srelbss
;
4568 elf_append_rela (output_bfd
, s
, &rela
);
4574 /* Finish up local dynamic symbol handling. We set the contents of
4575 various dynamic sections here. */
4578 elf_x86_64_finish_local_dynamic_symbol (void **slot
, void *inf
)
4580 struct elf_link_hash_entry
*h
4581 = (struct elf_link_hash_entry
*) *slot
;
4582 struct bfd_link_info
*info
4583 = (struct bfd_link_info
*) inf
;
4585 return elf_x86_64_finish_dynamic_symbol (info
->output_bfd
,
4589 /* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4590 here since undefined weak symbol may not be dynamic and may not be
4591 called for elf_x86_64_finish_dynamic_symbol. */
4594 elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry
*bh
,
4597 struct elf_link_hash_entry
*h
= (struct elf_link_hash_entry
*) bh
;
4598 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
4600 if (h
->root
.type
!= bfd_link_hash_undefweak
4601 || h
->dynindx
!= -1)
4604 return elf_x86_64_finish_dynamic_symbol (info
->output_bfd
,
4608 /* Used to decide how to sort relocs in an optimal manner for the
4609 dynamic linker, before writing them out. */
4611 static enum elf_reloc_type_class
4612 elf_x86_64_reloc_type_class (const struct bfd_link_info
*info
,
4613 const asection
*rel_sec ATTRIBUTE_UNUSED
,
4614 const Elf_Internal_Rela
*rela
)
4616 bfd
*abfd
= info
->output_bfd
;
4617 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4618 struct elf_x86_link_hash_table
*htab
4619 = elf_x86_hash_table (info
, X86_64_ELF_DATA
);
4621 if (htab
->elf
.dynsym
!= NULL
4622 && htab
->elf
.dynsym
->contents
!= NULL
)
4624 /* Check relocation against STT_GNU_IFUNC symbol if there are
4626 unsigned long r_symndx
= htab
->r_sym (rela
->r_info
);
4627 if (r_symndx
!= STN_UNDEF
)
4629 Elf_Internal_Sym sym
;
4630 if (!bed
->s
->swap_symbol_in (abfd
,
4631 (htab
->elf
.dynsym
->contents
4632 + r_symndx
* bed
->s
->sizeof_sym
),
4636 if (ELF_ST_TYPE (sym
.st_info
) == STT_GNU_IFUNC
)
4637 return reloc_class_ifunc
;
4641 switch ((int) ELF32_R_TYPE (rela
->r_info
))
4643 case R_X86_64_IRELATIVE
:
4644 return reloc_class_ifunc
;
4645 case R_X86_64_RELATIVE
:
4646 case R_X86_64_RELATIVE64
:
4647 return reloc_class_relative
;
4648 case R_X86_64_JUMP_SLOT
:
4649 return reloc_class_plt
;
4651 return reloc_class_copy
;
4653 return reloc_class_normal
;
4657 /* Finish up the dynamic sections. */
4660 elf_x86_64_finish_dynamic_sections (bfd
*output_bfd
,
4661 struct bfd_link_info
*info
)
4663 struct elf_x86_link_hash_table
*htab
;
4665 htab
= _bfd_x86_elf_finish_dynamic_sections (output_bfd
, info
);
4669 if (! htab
->elf
.dynamic_sections_created
)
4672 if (htab
->elf
.splt
&& htab
->elf
.splt
->size
> 0)
4674 elf_section_data (htab
->elf
.splt
->output_section
)
4675 ->this_hdr
.sh_entsize
= htab
->plt
.plt_entry_size
;
4677 if (htab
->plt
.has_plt0
)
4679 /* Fill in the special first entry in the procedure linkage
4681 memcpy (htab
->elf
.splt
->contents
,
4682 htab
->lazy_plt
->plt0_entry
,
4683 htab
->lazy_plt
->plt0_entry_size
);
4684 /* Add offset for pushq GOT+8(%rip), since the instruction
4685 uses 6 bytes subtract this value. */
4686 bfd_put_32 (output_bfd
,
4687 (htab
->elf
.sgotplt
->output_section
->vma
4688 + htab
->elf
.sgotplt
->output_offset
4690 - htab
->elf
.splt
->output_section
->vma
4691 - htab
->elf
.splt
->output_offset
4693 (htab
->elf
.splt
->contents
4694 + htab
->lazy_plt
->plt0_got1_offset
));
4695 /* Add offset for the PC-relative instruction accessing
4696 GOT+16, subtracting the offset to the end of that
4698 bfd_put_32 (output_bfd
,
4699 (htab
->elf
.sgotplt
->output_section
->vma
4700 + htab
->elf
.sgotplt
->output_offset
4702 - htab
->elf
.splt
->output_section
->vma
4703 - htab
->elf
.splt
->output_offset
4704 - htab
->lazy_plt
->plt0_got2_insn_end
),
4705 (htab
->elf
.splt
->contents
4706 + htab
->lazy_plt
->plt0_got2_offset
));
4709 if (htab
->elf
.tlsdesc_plt
)
4711 bfd_put_64 (output_bfd
, (bfd_vma
) 0,
4712 htab
->elf
.sgot
->contents
+ htab
->elf
.tlsdesc_got
);
4714 memcpy (htab
->elf
.splt
->contents
+ htab
->elf
.tlsdesc_plt
,
4715 htab
->lazy_plt
->plt_tlsdesc_entry
,
4716 htab
->lazy_plt
->plt_tlsdesc_entry_size
);
4718 /* Add offset for pushq GOT+8(%rip), since ENDBR64 uses 4
4719 bytes and the instruction uses 6 bytes, subtract these
4721 bfd_put_32 (output_bfd
,
4722 (htab
->elf
.sgotplt
->output_section
->vma
4723 + htab
->elf
.sgotplt
->output_offset
4725 - htab
->elf
.splt
->output_section
->vma
4726 - htab
->elf
.splt
->output_offset
4727 - htab
->elf
.tlsdesc_plt
4728 - htab
->lazy_plt
->plt_tlsdesc_got1_insn_end
),
4729 (htab
->elf
.splt
->contents
4730 + htab
->elf
.tlsdesc_plt
4731 + htab
->lazy_plt
->plt_tlsdesc_got1_offset
));
4732 /* Add offset for indirect branch via GOT+TDG, where TDG
4733 stands for htab->tlsdesc_got, subtracting the offset
4734 to the end of that instruction. */
4735 bfd_put_32 (output_bfd
,
4736 (htab
->elf
.sgot
->output_section
->vma
4737 + htab
->elf
.sgot
->output_offset
4738 + htab
->elf
.tlsdesc_got
4739 - htab
->elf
.splt
->output_section
->vma
4740 - htab
->elf
.splt
->output_offset
4741 - htab
->elf
.tlsdesc_plt
4742 - htab
->lazy_plt
->plt_tlsdesc_got2_insn_end
),
4743 (htab
->elf
.splt
->contents
4744 + htab
->elf
.tlsdesc_plt
4745 + htab
->lazy_plt
->plt_tlsdesc_got2_offset
));
4749 /* Fill PLT entries for undefined weak symbols in PIE. */
4750 if (bfd_link_pie (info
))
4751 bfd_hash_traverse (&info
->hash
->table
,
4752 elf_x86_64_pie_finish_undefweak_symbol
,
4758 /* Fill PLT/GOT entries and allocate dynamic relocations for local
4759 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4760 It has to be done before elf_link_sort_relocs is called so that
4761 dynamic relocations are properly sorted. */
4764 elf_x86_64_output_arch_local_syms
4765 (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4766 struct bfd_link_info
*info
,
4767 void *flaginfo ATTRIBUTE_UNUSED
,
4768 int (*func
) (void *, const char *,
4771 struct elf_link_hash_entry
*) ATTRIBUTE_UNUSED
)
4773 struct elf_x86_link_hash_table
*htab
4774 = elf_x86_hash_table (info
, X86_64_ELF_DATA
);
4778 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4779 htab_traverse (htab
->loc_hash_table
,
4780 elf_x86_64_finish_local_dynamic_symbol
,
4786 /* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4787 dynamic relocations. */
4790 elf_x86_64_get_synthetic_symtab (bfd
*abfd
,
4791 long symcount ATTRIBUTE_UNUSED
,
4792 asymbol
**syms ATTRIBUTE_UNUSED
,
4799 bfd_byte
*plt_contents
;
4801 const struct elf_x86_lazy_plt_layout
*lazy_plt
;
4802 const struct elf_x86_non_lazy_plt_layout
*non_lazy_plt
;
4803 const struct elf_x86_lazy_plt_layout
*lazy_bnd_plt
;
4804 const struct elf_x86_non_lazy_plt_layout
*non_lazy_bnd_plt
;
4805 const struct elf_x86_lazy_plt_layout
*lazy_ibt_plt
;
4806 const struct elf_x86_non_lazy_plt_layout
*non_lazy_ibt_plt
;
4808 enum elf_x86_plt_type plt_type
;
4809 struct elf_x86_plt plts
[] =
4811 { ".plt", NULL
, NULL
, plt_unknown
, 0, 0, 0, 0 },
4812 { ".plt.got", NULL
, NULL
, plt_non_lazy
, 0, 0, 0, 0 },
4813 { ".plt.sec", NULL
, NULL
, plt_second
, 0, 0, 0, 0 },
4814 { ".plt.bnd", NULL
, NULL
, plt_second
, 0, 0, 0, 0 },
4815 { NULL
, NULL
, NULL
, plt_non_lazy
, 0, 0, 0, 0 }
4820 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
4823 if (dynsymcount
<= 0)
4826 relsize
= bfd_get_dynamic_reloc_upper_bound (abfd
);
4830 lazy_plt
= &elf_x86_64_lazy_plt
;
4831 non_lazy_plt
= &elf_x86_64_non_lazy_plt
;
4832 lazy_bnd_plt
= &elf_x86_64_lazy_bnd_plt
;
4833 non_lazy_bnd_plt
= &elf_x86_64_non_lazy_bnd_plt
;
4834 if (ABI_64_P (abfd
))
4836 lazy_ibt_plt
= &elf_x86_64_lazy_ibt_plt
;
4837 non_lazy_ibt_plt
= &elf_x86_64_non_lazy_ibt_plt
;
4841 lazy_ibt_plt
= &elf_x32_lazy_ibt_plt
;
4842 non_lazy_ibt_plt
= &elf_x32_non_lazy_ibt_plt
;
4846 for (j
= 0; plts
[j
].name
!= NULL
; j
++)
4848 plt
= bfd_get_section_by_name (abfd
, plts
[j
].name
);
4849 if (plt
== NULL
|| plt
->size
== 0)
4852 /* Get the PLT section contents. */
4853 if (!bfd_malloc_and_get_section (abfd
, plt
, &plt_contents
))
4856 /* Check what kind of PLT it is. */
4857 plt_type
= plt_unknown
;
4858 if (plts
[j
].type
== plt_unknown
4859 && (plt
->size
>= (lazy_plt
->plt_entry_size
4860 + lazy_plt
->plt_entry_size
)))
4862 /* Match lazy PLT first. Need to check the first two
4864 if ((memcmp (plt_contents
, lazy_plt
->plt0_entry
,
4865 lazy_plt
->plt0_got1_offset
) == 0)
4866 && (memcmp (plt_contents
+ 6, lazy_plt
->plt0_entry
+ 6,
4868 plt_type
= plt_lazy
;
4869 else if (lazy_bnd_plt
!= NULL
4870 && (memcmp (plt_contents
, lazy_bnd_plt
->plt0_entry
,
4871 lazy_bnd_plt
->plt0_got1_offset
) == 0)
4872 && (memcmp (plt_contents
+ 6,
4873 lazy_bnd_plt
->plt0_entry
+ 6, 3) == 0))
4875 plt_type
= plt_lazy
| plt_second
;
4876 /* The fist entry in the lazy IBT PLT is the same as the
4878 if ((memcmp (plt_contents
+ lazy_ibt_plt
->plt_entry_size
,
4879 lazy_ibt_plt
->plt_entry
,
4880 lazy_ibt_plt
->plt_got_offset
) == 0))
4881 lazy_plt
= lazy_ibt_plt
;
4883 lazy_plt
= lazy_bnd_plt
;
4887 if (non_lazy_plt
!= NULL
4888 && (plt_type
== plt_unknown
|| plt_type
== plt_non_lazy
)
4889 && plt
->size
>= non_lazy_plt
->plt_entry_size
)
4891 /* Match non-lazy PLT. */
4892 if (memcmp (plt_contents
, non_lazy_plt
->plt_entry
,
4893 non_lazy_plt
->plt_got_offset
) == 0)
4894 plt_type
= plt_non_lazy
;
4897 if (plt_type
== plt_unknown
|| plt_type
== plt_second
)
4899 if (non_lazy_bnd_plt
!= NULL
4900 && plt
->size
>= non_lazy_bnd_plt
->plt_entry_size
4901 && (memcmp (plt_contents
, non_lazy_bnd_plt
->plt_entry
,
4902 non_lazy_bnd_plt
->plt_got_offset
) == 0))
4904 /* Match BND PLT. */
4905 plt_type
= plt_second
;
4906 non_lazy_plt
= non_lazy_bnd_plt
;
4908 else if (non_lazy_ibt_plt
!= NULL
4909 && plt
->size
>= non_lazy_ibt_plt
->plt_entry_size
4910 && (memcmp (plt_contents
,
4911 non_lazy_ibt_plt
->plt_entry
,
4912 non_lazy_ibt_plt
->plt_got_offset
) == 0))
4914 /* Match IBT PLT. */
4915 plt_type
= plt_second
;
4916 non_lazy_plt
= non_lazy_ibt_plt
;
4920 if (plt_type
== plt_unknown
)
4922 free (plt_contents
);
4927 plts
[j
].type
= plt_type
;
4929 if ((plt_type
& plt_lazy
))
4931 plts
[j
].plt_got_offset
= lazy_plt
->plt_got_offset
;
4932 plts
[j
].plt_got_insn_size
= lazy_plt
->plt_got_insn_size
;
4933 plts
[j
].plt_entry_size
= lazy_plt
->plt_entry_size
;
4934 /* Skip PLT0 in lazy PLT. */
4939 plts
[j
].plt_got_offset
= non_lazy_plt
->plt_got_offset
;
4940 plts
[j
].plt_got_insn_size
= non_lazy_plt
->plt_got_insn_size
;
4941 plts
[j
].plt_entry_size
= non_lazy_plt
->plt_entry_size
;
4945 /* Skip lazy PLT when the second PLT is used. */
4946 if (plt_type
== (plt_lazy
| plt_second
))
4950 n
= plt
->size
/ plts
[j
].plt_entry_size
;
4955 plts
[j
].contents
= plt_contents
;
4958 return _bfd_x86_elf_get_synthetic_symtab (abfd
, count
, relsize
,
4959 (bfd_vma
) 0, plts
, dynsyms
,
4963 /* Handle an x86-64 specific section when reading an object file. This
4964 is called when elfcode.h finds a section with an unknown type. */
4967 elf_x86_64_section_from_shdr (bfd
*abfd
, Elf_Internal_Shdr
*hdr
,
4968 const char *name
, int shindex
)
4970 if (hdr
->sh_type
!= SHT_X86_64_UNWIND
)
4973 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
4979 /* Hook called by the linker routine which adds symbols from an object
4980 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
4984 elf_x86_64_add_symbol_hook (bfd
*abfd
,
4985 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4986 Elf_Internal_Sym
*sym
,
4987 const char **namep ATTRIBUTE_UNUSED
,
4988 flagword
*flagsp ATTRIBUTE_UNUSED
,
4994 switch (sym
->st_shndx
)
4996 case SHN_X86_64_LCOMMON
:
4997 lcomm
= bfd_get_section_by_name (abfd
, "LARGE_COMMON");
5000 lcomm
= bfd_make_section_with_flags (abfd
,
5004 | SEC_LINKER_CREATED
));
5007 elf_section_flags (lcomm
) |= SHF_X86_64_LARGE
;
5010 *valp
= sym
->st_size
;
5018 /* Given a BFD section, try to locate the corresponding ELF section
5022 elf_x86_64_elf_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
5023 asection
*sec
, int *index_return
)
5025 if (sec
== &_bfd_elf_large_com_section
)
5027 *index_return
= SHN_X86_64_LCOMMON
;
5033 /* Process a symbol. */
5036 elf_x86_64_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
5039 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
5041 switch (elfsym
->internal_elf_sym
.st_shndx
)
5043 case SHN_X86_64_LCOMMON
:
5044 asym
->section
= &_bfd_elf_large_com_section
;
5045 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
5046 /* Common symbol doesn't set BSF_GLOBAL. */
5047 asym
->flags
&= ~BSF_GLOBAL
;
5053 elf_x86_64_common_definition (Elf_Internal_Sym
*sym
)
5055 return (sym
->st_shndx
== SHN_COMMON
5056 || sym
->st_shndx
== SHN_X86_64_LCOMMON
);
5060 elf_x86_64_common_section_index (asection
*sec
)
5062 if ((elf_section_flags (sec
) & SHF_X86_64_LARGE
) == 0)
5065 return SHN_X86_64_LCOMMON
;
5069 elf_x86_64_common_section (asection
*sec
)
5071 if ((elf_section_flags (sec
) & SHF_X86_64_LARGE
) == 0)
5072 return bfd_com_section_ptr
;
5074 return &_bfd_elf_large_com_section
;
5078 elf_x86_64_merge_symbol (struct elf_link_hash_entry
*h
,
5079 const Elf_Internal_Sym
*sym
,
5084 const asection
*oldsec
)
5086 /* A normal common symbol and a large common symbol result in a
5087 normal common symbol. We turn the large common symbol into a
5090 && h
->root
.type
== bfd_link_hash_common
5092 && bfd_is_com_section (*psec
)
5095 if (sym
->st_shndx
== SHN_COMMON
5096 && (elf_section_flags (oldsec
) & SHF_X86_64_LARGE
) != 0)
5098 h
->root
.u
.c
.p
->section
5099 = bfd_make_section_old_way (oldbfd
, "COMMON");
5100 h
->root
.u
.c
.p
->section
->flags
= SEC_ALLOC
;
5102 else if (sym
->st_shndx
== SHN_X86_64_LCOMMON
5103 && (elf_section_flags (oldsec
) & SHF_X86_64_LARGE
) == 0)
5104 *psec
= bfd_com_section_ptr
;
5111 elf_x86_64_additional_program_headers (bfd
*abfd
,
5112 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
5117 /* Check to see if we need a large readonly segment. */
5118 s
= bfd_get_section_by_name (abfd
, ".lrodata");
5119 if (s
&& (s
->flags
& SEC_LOAD
))
5122 /* Check to see if we need a large data segment. Since .lbss sections
5123 is placed right after the .bss section, there should be no need for
5124 a large data segment just because of .lbss. */
5125 s
= bfd_get_section_by_name (abfd
, ".ldata");
5126 if (s
&& (s
->flags
& SEC_LOAD
))
5132 /* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
5135 elf_x86_64_relocs_compatible (const bfd_target
*input
,
5136 const bfd_target
*output
)
5138 return ((xvec_get_elf_backend_data (input
)->s
->elfclass
5139 == xvec_get_elf_backend_data (output
)->s
->elfclass
)
5140 && _bfd_elf_relocs_compatible (input
, output
));
5143 /* Set up x86-64 GNU properties. Return the first relocatable ELF input
5144 with GNU properties if found. Otherwise, return NULL. */
5147 elf_x86_64_link_setup_gnu_properties (struct bfd_link_info
*info
)
5149 struct elf_x86_init_table init_table
;
5150 const struct elf_backend_data
*bed
;
5151 struct elf_x86_link_hash_table
*htab
;
5153 if ((int) R_X86_64_standard
>= (int) R_X86_64_converted_reloc_bit
5154 || (int) R_X86_64_max
<= (int) R_X86_64_converted_reloc_bit
5155 || ((int) (R_X86_64_GNU_VTINHERIT
| R_X86_64_converted_reloc_bit
)
5156 != (int) R_X86_64_GNU_VTINHERIT
)
5157 || ((int) (R_X86_64_GNU_VTENTRY
| R_X86_64_converted_reloc_bit
)
5158 != (int) R_X86_64_GNU_VTENTRY
))
5161 /* This is unused for x86-64. */
5162 init_table
.plt0_pad_byte
= 0x90;
5164 bed
= get_elf_backend_data (info
->output_bfd
);
5165 htab
= elf_x86_hash_table (info
, bed
->target_id
);
5168 if (htab
->params
->bndplt
)
5170 init_table
.lazy_plt
= &elf_x86_64_lazy_bnd_plt
;
5171 init_table
.non_lazy_plt
= &elf_x86_64_non_lazy_bnd_plt
;
5175 init_table
.lazy_plt
= &elf_x86_64_lazy_plt
;
5176 init_table
.non_lazy_plt
= &elf_x86_64_non_lazy_plt
;
5179 if (ABI_64_P (info
->output_bfd
))
5181 init_table
.lazy_ibt_plt
= &elf_x86_64_lazy_ibt_plt
;
5182 init_table
.non_lazy_ibt_plt
= &elf_x86_64_non_lazy_ibt_plt
;
5186 init_table
.lazy_ibt_plt
= &elf_x32_lazy_ibt_plt
;
5187 init_table
.non_lazy_ibt_plt
= &elf_x32_non_lazy_ibt_plt
;
5190 if (ABI_64_P (info
->output_bfd
))
5192 init_table
.r_info
= elf64_r_info
;
5193 init_table
.r_sym
= elf64_r_sym
;
5197 init_table
.r_info
= elf32_r_info
;
5198 init_table
.r_sym
= elf32_r_sym
;
5201 return _bfd_x86_elf_link_setup_gnu_properties (info
, &init_table
);
5204 static const struct bfd_elf_special_section
5205 elf_x86_64_special_sections
[]=
5207 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_X86_64_LARGE
},
5208 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_X86_64_LARGE
},
5209 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_EXECINSTR
+ SHF_X86_64_LARGE
},
5210 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_X86_64_LARGE
},
5211 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_X86_64_LARGE
},
5212 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_X86_64_LARGE
},
5213 { NULL
, 0, 0, 0, 0 }
5216 #define TARGET_LITTLE_SYM x86_64_elf64_vec
5217 #define TARGET_LITTLE_NAME "elf64-x86-64"
5218 #define ELF_ARCH bfd_arch_i386
5219 #define ELF_TARGET_ID X86_64_ELF_DATA
5220 #define ELF_MACHINE_CODE EM_X86_64
5221 #if DEFAULT_LD_Z_SEPARATE_CODE
5222 # define ELF_MAXPAGESIZE 0x1000
5224 # define ELF_MAXPAGESIZE 0x200000
5226 #define ELF_MINPAGESIZE 0x1000
5227 #define ELF_COMMONPAGESIZE 0x1000
5229 #define elf_backend_can_gc_sections 1
5230 #define elf_backend_can_refcount 1
5231 #define elf_backend_want_got_plt 1
5232 #define elf_backend_plt_readonly 1
5233 #define elf_backend_want_plt_sym 0
5234 #define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
5235 #define elf_backend_rela_normal 1
5236 #define elf_backend_plt_alignment 4
5237 #define elf_backend_extern_protected_data 1
5238 #define elf_backend_caches_rawsize 1
5239 #define elf_backend_dtrel_excludes_plt 1
5240 #define elf_backend_want_dynrelro 1
5242 #define elf_info_to_howto elf_x86_64_info_to_howto
5244 #define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
5245 #define bfd_elf64_bfd_reloc_name_lookup \
5246 elf_x86_64_reloc_name_lookup
5248 #define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
5249 #define elf_backend_check_relocs elf_x86_64_check_relocs
5250 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
5251 #define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
5252 #define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
5253 #define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms
5254 #define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
5255 #define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
5257 #define elf_backend_write_core_note elf_x86_64_write_core_note
5259 #define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
5260 #define elf_backend_relocate_section elf_x86_64_relocate_section
5261 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
5262 #define elf_backend_object_p elf64_x86_64_elf_object_p
5263 #define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
5265 #define elf_backend_section_from_shdr \
5266 elf_x86_64_section_from_shdr
5268 #define elf_backend_section_from_bfd_section \
5269 elf_x86_64_elf_section_from_bfd_section
5270 #define elf_backend_add_symbol_hook \
5271 elf_x86_64_add_symbol_hook
5272 #define elf_backend_symbol_processing \
5273 elf_x86_64_symbol_processing
5274 #define elf_backend_common_section_index \
5275 elf_x86_64_common_section_index
5276 #define elf_backend_common_section \
5277 elf_x86_64_common_section
5278 #define elf_backend_common_definition \
5279 elf_x86_64_common_definition
5280 #define elf_backend_merge_symbol \
5281 elf_x86_64_merge_symbol
5282 #define elf_backend_special_sections \
5283 elf_x86_64_special_sections
5284 #define elf_backend_additional_program_headers \
5285 elf_x86_64_additional_program_headers
5286 #define elf_backend_setup_gnu_properties \
5287 elf_x86_64_link_setup_gnu_properties
5288 #define elf_backend_hide_symbol \
5289 _bfd_x86_elf_hide_symbol
5292 #define elf64_bed elf64_x86_64_bed
5294 #include "elf64-target.h"
5296 /* CloudABI support. */
5298 #undef TARGET_LITTLE_SYM
5299 #define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec
5300 #undef TARGET_LITTLE_NAME
5301 #define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi"
5304 #define ELF_OSABI ELFOSABI_CLOUDABI
5307 #define elf64_bed elf64_x86_64_cloudabi_bed
5309 #include "elf64-target.h"
5311 /* FreeBSD support. */
5313 #undef TARGET_LITTLE_SYM
5314 #define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
5315 #undef TARGET_LITTLE_NAME
5316 #define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
5319 #define ELF_OSABI ELFOSABI_FREEBSD
5322 #define elf64_bed elf64_x86_64_fbsd_bed
5324 #include "elf64-target.h"
5326 /* Solaris 2 support. */
5328 #undef TARGET_LITTLE_SYM
5329 #define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
5330 #undef TARGET_LITTLE_NAME
5331 #define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
5333 #undef ELF_TARGET_OS
5334 #define ELF_TARGET_OS is_solaris
5336 /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5337 objects won't be recognized. */
5341 #define elf64_bed elf64_x86_64_sol2_bed
5343 /* The 64-bit static TLS arena size is rounded to the nearest 16-byte
5345 #undef elf_backend_static_tls_alignment
5346 #define elf_backend_static_tls_alignment 16
5348 /* The Solaris 2 ABI requires a plt symbol on all platforms.
5350 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5352 #undef elf_backend_want_plt_sym
5353 #define elf_backend_want_plt_sym 1
5355 #undef elf_backend_strtab_flags
5356 #define elf_backend_strtab_flags SHF_STRINGS
5359 elf64_x86_64_copy_solaris_special_section_fields (const bfd
*ibfd ATTRIBUTE_UNUSED
,
5360 bfd
*obfd ATTRIBUTE_UNUSED
,
5361 const Elf_Internal_Shdr
*isection ATTRIBUTE_UNUSED
,
5362 Elf_Internal_Shdr
*osection ATTRIBUTE_UNUSED
)
5364 /* PR 19938: FIXME: Need to add code for setting the sh_info
5365 and sh_link fields of Solaris specific section types. */
5369 #undef elf_backend_copy_special_section_fields
5370 #define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields
5372 #include "elf64-target.h"
5374 /* Restore defaults. */
5376 #undef elf_backend_static_tls_alignment
5377 #undef elf_backend_want_plt_sym
5378 #define elf_backend_want_plt_sym 0
5379 #undef elf_backend_strtab_flags
5380 #undef elf_backend_copy_special_section_fields
5382 /* Intel L1OM support. */
5385 elf64_l1om_elf_object_p (bfd
*abfd
)
5387 /* Set the right machine number for an L1OM elf64 file. */
5388 bfd_default_set_arch_mach (abfd
, bfd_arch_l1om
, bfd_mach_l1om
);
5392 #undef TARGET_LITTLE_SYM
5393 #define TARGET_LITTLE_SYM l1om_elf64_vec
5394 #undef TARGET_LITTLE_NAME
5395 #define TARGET_LITTLE_NAME "elf64-l1om"
5397 #define ELF_ARCH bfd_arch_l1om
5399 #undef ELF_MACHINE_CODE
5400 #define ELF_MACHINE_CODE EM_L1OM
5405 #define elf64_bed elf64_l1om_bed
5407 #undef elf_backend_object_p
5408 #define elf_backend_object_p elf64_l1om_elf_object_p
5410 /* Restore defaults. */
5411 #undef ELF_MAXPAGESIZE
5412 #undef ELF_MINPAGESIZE
5413 #undef ELF_COMMONPAGESIZE
5414 #if DEFAULT_LD_Z_SEPARATE_CODE
5415 # define ELF_MAXPAGESIZE 0x1000
5417 # define ELF_MAXPAGESIZE 0x200000
5419 #define ELF_MINPAGESIZE 0x1000
5420 #define ELF_COMMONPAGESIZE 0x1000
5421 #undef elf_backend_plt_alignment
5422 #define elf_backend_plt_alignment 4
5423 #undef ELF_TARGET_OS
5425 #include "elf64-target.h"
5427 /* FreeBSD L1OM support. */
5429 #undef TARGET_LITTLE_SYM
5430 #define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
5431 #undef TARGET_LITTLE_NAME
5432 #define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
5435 #define ELF_OSABI ELFOSABI_FREEBSD
5438 #define elf64_bed elf64_l1om_fbsd_bed
5440 #include "elf64-target.h"
5442 /* Intel K1OM support. */
5445 elf64_k1om_elf_object_p (bfd
*abfd
)
5447 /* Set the right machine number for an K1OM elf64 file. */
5448 bfd_default_set_arch_mach (abfd
, bfd_arch_k1om
, bfd_mach_k1om
);
5452 #undef TARGET_LITTLE_SYM
5453 #define TARGET_LITTLE_SYM k1om_elf64_vec
5454 #undef TARGET_LITTLE_NAME
5455 #define TARGET_LITTLE_NAME "elf64-k1om"
5457 #define ELF_ARCH bfd_arch_k1om
5459 #undef ELF_MACHINE_CODE
5460 #define ELF_MACHINE_CODE EM_K1OM
5465 #define elf64_bed elf64_k1om_bed
5467 #undef elf_backend_object_p
5468 #define elf_backend_object_p elf64_k1om_elf_object_p
5470 #include "elf64-target.h"
5472 /* FreeBSD K1OM support. */
5474 #undef TARGET_LITTLE_SYM
5475 #define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
5476 #undef TARGET_LITTLE_NAME
5477 #define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
5480 #define ELF_OSABI ELFOSABI_FREEBSD
5483 #define elf64_bed elf64_k1om_fbsd_bed
5485 #include "elf64-target.h"
5487 /* 32bit x86-64 support. */
5489 #undef TARGET_LITTLE_SYM
5490 #define TARGET_LITTLE_SYM x86_64_elf32_vec
5491 #undef TARGET_LITTLE_NAME
5492 #define TARGET_LITTLE_NAME "elf32-x86-64"
5494 #define elf32_bed elf32_x86_64_bed
5497 #define ELF_ARCH bfd_arch_i386
5499 #undef ELF_MACHINE_CODE
5500 #define ELF_MACHINE_CODE EM_X86_64
5504 #define bfd_elf32_bfd_reloc_type_lookup \
5505 elf_x86_64_reloc_type_lookup
5506 #define bfd_elf32_bfd_reloc_name_lookup \
5507 elf_x86_64_reloc_name_lookup
5508 #define bfd_elf32_get_synthetic_symtab \
5509 elf_x86_64_get_synthetic_symtab
5511 #undef elf_backend_object_p
5512 #define elf_backend_object_p \
5513 elf32_x86_64_elf_object_p
5515 #undef elf_backend_bfd_from_remote_memory
5516 #define elf_backend_bfd_from_remote_memory \
5517 _bfd_elf32_bfd_from_remote_memory
5519 #undef elf_backend_size_info
5520 #define elf_backend_size_info \
5521 _bfd_elf32_size_info
5523 #include "elf32-target.h"