1 /* X86-64 specific support for ELF
2 Copyright (C) 2000-2017 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"
25 #include "libiberty.h"
27 #include "opcode/i386.h"
28 #include "elf/x86-64.h"
35 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
36 #define MINUS_ONE (~ (bfd_vma) 0)
38 /* Since both 32-bit and 64-bit x86-64 encode relocation type in the
39 identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get
40 relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE
41 since they are the same. */
43 /* The relocation "howto" table. Order of fields:
44 type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow,
45 special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */
46 static reloc_howto_type x86_64_elf_howto_table[] =
48 HOWTO(R_X86_64_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
49 bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000,
51 HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
52 bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE,
54 HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
55 bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff,
57 HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
58 bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff,
60 HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
61 bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff,
63 HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff,
66 HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
67 bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE,
69 HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE,
72 HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
73 bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE,
75 HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed,
76 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff,
78 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
79 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
81 HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed,
82 bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff,
84 HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
85 bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE),
86 HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield,
87 bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE),
88 HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
89 bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE),
90 HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
91 bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE),
92 HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
93 bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE,
95 HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE,
98 HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
99 bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE,
101 HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
102 bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff,
104 HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
105 bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff,
107 HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
108 bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff,
110 HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed,
111 bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff,
113 HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
114 bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff,
116 HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
117 bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE,
119 HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_X86_64_GOTOFF64",
121 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
122 HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
123 bfd_elf_generic_reloc, "R_X86_64_GOTPC32",
124 FALSE, 0xffffffff, 0xffffffff, TRUE),
125 HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
126 bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE,
128 HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
129 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE,
131 HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
132 bfd_elf_generic_reloc, "R_X86_64_GOTPC64",
133 FALSE, MINUS_ONE, MINUS_ONE, TRUE),
134 HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
135 bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE,
137 HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
138 bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE,
140 HOWTO(R_X86_64_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
141 bfd_elf_generic_reloc, "R_X86_64_SIZE32", FALSE, 0xffffffff, 0xffffffff,
143 HOWTO(R_X86_64_SIZE64, 0, 4, 64, FALSE, 0, complain_overflow_unsigned,
144 bfd_elf_generic_reloc, "R_X86_64_SIZE64", FALSE, MINUS_ONE, MINUS_ONE,
146 HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0,
147 complain_overflow_bitfield, bfd_elf_generic_reloc,
148 "R_X86_64_GOTPC32_TLSDESC",
149 FALSE, 0xffffffff, 0xffffffff, TRUE),
150 HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0,
151 complain_overflow_dont, bfd_elf_generic_reloc,
152 "R_X86_64_TLSDESC_CALL",
154 HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0,
155 complain_overflow_bitfield, bfd_elf_generic_reloc,
157 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
158 HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
159 bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE,
161 HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
162 bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE,
164 HOWTO(R_X86_64_PC32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
165 bfd_elf_generic_reloc, "R_X86_64_PC32_BND", FALSE, 0xffffffff, 0xffffffff,
167 HOWTO(R_X86_64_PLT32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
168 bfd_elf_generic_reloc, "R_X86_64_PLT32_BND", FALSE, 0xffffffff, 0xffffffff,
170 HOWTO(R_X86_64_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
171 bfd_elf_generic_reloc, "R_X86_64_GOTPCRELX", FALSE, 0xffffffff,
173 HOWTO(R_X86_64_REX_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
174 bfd_elf_generic_reloc, "R_X86_64_REX_GOTPCRELX", FALSE, 0xffffffff,
177 /* We have a gap in the reloc numbers here.
178 R_X86_64_standard counts the number up to this point, and
179 R_X86_64_vt_offset is the value to subtract from a reloc type of
180 R_X86_64_GNU_VT* to form an index into this table. */
181 #define R_X86_64_standard (R_X86_64_REX_GOTPCRELX + 1)
182 #define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)
184 /* GNU extension to record C++ vtable hierarchy. */
185 HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont,
186 NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE),
188 /* GNU extension to record C++ vtable member usage. */
189 HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont,
190 _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0,
193 /* Use complain_overflow_bitfield on R_X86_64_32 for x32. */
194 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
195 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
199 /* Set if a relocation is converted from a GOTPCREL relocation. */
200 #define R_X86_64_converted_reloc_bit (1 << 7)
202 #define X86_PCREL_TYPE_P(TYPE) \
203 ( ((TYPE) == R_X86_64_PC8) \
204 || ((TYPE) == R_X86_64_PC16) \
205 || ((TYPE) == R_X86_64_PC32) \
206 || ((TYPE) == R_X86_64_PC32_BND) \
207 || ((TYPE) == R_X86_64_PC64))
209 /* Map BFD relocs to the x86_64 elf relocs. */
212 bfd_reloc_code_real_type bfd_reloc_val;
213 unsigned char elf_reloc_val;
216 static const struct elf_reloc_map x86_64_reloc_map[] =
218 { BFD_RELOC_NONE, R_X86_64_NONE, },
219 { BFD_RELOC_64, R_X86_64_64, },
220 { BFD_RELOC_32_PCREL, R_X86_64_PC32, },
221 { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,},
222 { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,},
223 { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, },
224 { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, },
225 { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, },
226 { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, },
227 { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, },
228 { BFD_RELOC_32, R_X86_64_32, },
229 { BFD_RELOC_X86_64_32S, R_X86_64_32S, },
230 { BFD_RELOC_16, R_X86_64_16, },
231 { BFD_RELOC_16_PCREL, R_X86_64_PC16, },
232 { BFD_RELOC_8, R_X86_64_8, },
233 { BFD_RELOC_8_PCREL, R_X86_64_PC8, },
234 { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, },
235 { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, },
236 { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, },
237 { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, },
238 { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, },
239 { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, },
240 { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, },
241 { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, },
242 { BFD_RELOC_64_PCREL, R_X86_64_PC64, },
243 { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, },
244 { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, },
245 { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, },
246 { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, },
247 { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, },
248 { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, },
249 { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, },
250 { BFD_RELOC_SIZE32, R_X86_64_SIZE32, },
251 { BFD_RELOC_SIZE64, R_X86_64_SIZE64, },
252 { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, },
253 { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, },
254 { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, },
255 { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, },
256 { BFD_RELOC_X86_64_PC32_BND, R_X86_64_PC32_BND, },
257 { BFD_RELOC_X86_64_PLT32_BND, R_X86_64_PLT32_BND, },
258 { BFD_RELOC_X86_64_GOTPCRELX, R_X86_64_GOTPCRELX, },
259 { BFD_RELOC_X86_64_REX_GOTPCRELX, R_X86_64_REX_GOTPCRELX, },
260 { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, },
261 { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, },
264 static reloc_howto_type *
265 elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
269 if (r_type == (unsigned int) R_X86_64_32)
274 i = ARRAY_SIZE (x86_64_elf_howto_table) - 1;
276 else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
277 || r_type >= (unsigned int) R_X86_64_max)
279 if (r_type >= (unsigned int) R_X86_64_standard)
281 /* xgettext:c-format */
282 _bfd_error_handler (_("%B: invalid relocation type %d"),
284 r_type = R_X86_64_NONE;
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 ATTRIBUTE_UNUSED, arelent *cache_ptr,
338 Elf_Internal_Rela *dst)
342 r_type = ELF32_R_TYPE (dst->r_info);
343 if (r_type != (unsigned int) R_X86_64_GNU_VTINHERIT
344 && r_type != (unsigned int) R_X86_64_GNU_VTENTRY)
345 r_type &= ~R_X86_64_converted_reloc_bit;
346 cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);
348 BFD_ASSERT (r_type == cache_ptr->howto->type || cache_ptr->howto->type == R_X86_64_NONE);
351 /* Support for core dump NOTE sections. */
353 elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
358 switch (note->descsz)
363 case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */
365 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
368 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
376 case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */
378 elf_tdata (abfd)->core->signal
379 = bfd_get_16 (abfd, note->descdata + 12);
382 elf_tdata (abfd)->core->lwpid
383 = bfd_get_32 (abfd, note->descdata + 32);
392 /* Make a ".reg/999" section. */
393 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
394 size, note->descpos + offset);
398 elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
400 switch (note->descsz)
405 case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */
406 elf_tdata (abfd)->core->pid
407 = bfd_get_32 (abfd, note->descdata + 12);
408 elf_tdata (abfd)->core->program
409 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
410 elf_tdata (abfd)->core->command
411 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
414 case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */
415 elf_tdata (abfd)->core->pid
416 = bfd_get_32 (abfd, note->descdata + 24);
417 elf_tdata (abfd)->core->program
418 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
419 elf_tdata (abfd)->core->command
420 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
423 /* Note that for some reason, a spurious space is tacked
424 onto the end of the args in some (at least one anyway)
425 implementations, so strip it off if it exists. */
428 char *command = elf_tdata (abfd)->core->command;
429 int n = strlen (command);
431 if (0 < n && command[n - 1] == ' ')
432 command[n - 1] = '\0';
440 elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz,
443 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
445 const char *fname, *psargs;
456 va_start (ap, note_type);
457 fname = va_arg (ap, const char *);
458 psargs = va_arg (ap, const char *);
461 if (bed->s->elfclass == ELFCLASS32)
464 memset (&data, 0, sizeof (data));
465 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
466 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
467 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
468 &data, sizeof (data));
473 memset (&data, 0, sizeof (data));
474 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
475 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
476 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
477 &data, sizeof (data));
482 va_start (ap, note_type);
483 pid = va_arg (ap, long);
484 cursig = va_arg (ap, int);
485 gregs = va_arg (ap, const void *);
488 if (bed->s->elfclass == ELFCLASS32)
490 if (bed->elf_machine_code == EM_X86_64)
492 prstatusx32_t prstat;
493 memset (&prstat, 0, sizeof (prstat));
495 prstat.pr_cursig = cursig;
496 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
497 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
498 &prstat, sizeof (prstat));
503 memset (&prstat, 0, sizeof (prstat));
505 prstat.pr_cursig = cursig;
506 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
507 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
508 &prstat, sizeof (prstat));
514 memset (&prstat, 0, sizeof (prstat));
516 prstat.pr_cursig = cursig;
517 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
518 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
519 &prstat, sizeof (prstat));
526 /* Functions for the x86-64 ELF linker. */
528 /* The size in bytes of an entry in the global offset table. */
530 #define GOT_ENTRY_SIZE 8
532 /* The size in bytes of an entry in the lazy procedure linkage table. */
534 #define LAZY_PLT_ENTRY_SIZE 16
536 /* The size in bytes of an entry in the non-lazy procedure linkage
539 #define NON_LAZY_PLT_ENTRY_SIZE 8
541 /* The first entry in a lazy procedure linkage table looks like this.
542 See the SVR4 ABI i386 supplement and the x86-64 ABI to see how this
545 static const bfd_byte elf_x86_64_lazy_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
547 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
548 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */
549 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
552 /* Subsequent entries in a lazy procedure linkage table look like this. */
554 static const bfd_byte elf_x86_64_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
556 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
557 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
558 0x68, /* pushq immediate */
559 0, 0, 0, 0, /* replaced with index into relocation table. */
560 0xe9, /* jmp relative */
561 0, 0, 0, 0 /* replaced with offset to start of .plt0. */
564 /* The first entry in a lazy procedure linkage table with BND prefix
567 static const bfd_byte elf_x86_64_lazy_bnd_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
569 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
570 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */
571 0x0f, 0x1f, 0 /* nopl (%rax) */
574 /* Subsequent entries for branches with BND prefx in a lazy procedure
575 linkage table look like this. */
577 static const bfd_byte elf_x86_64_lazy_bnd_plt_entry[LAZY_PLT_ENTRY_SIZE] =
579 0x68, 0, 0, 0, 0, /* pushq immediate */
580 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
581 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */
584 /* The first entry in the IBT-enabled lazy procedure linkage table is the
585 the same as the lazy PLT with BND prefix so that bound registers are
586 preserved when control is passed to dynamic linker. Subsequent
587 entries for a IBT-enabled lazy procedure linkage table look like
590 static const bfd_byte elf_x86_64_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
592 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
593 0x68, 0, 0, 0, 0, /* pushq immediate */
594 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
598 /* The first entry in the x32 IBT-enabled lazy procedure linkage table
599 is the same as the normal lazy PLT. Subsequent entries for an
600 x32 IBT-enabled lazy procedure linkage table look like this. */
602 static const bfd_byte elf_x32_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
604 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
605 0x68, 0, 0, 0, 0, /* pushq immediate */
606 0xe9, 0, 0, 0, 0, /* jmpq relative */
607 0x66, 0x90 /* xchg %ax,%ax */
610 /* Entries in the non-lazey procedure linkage table look like this. */
612 static const bfd_byte elf_x86_64_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
614 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
615 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
616 0x66, 0x90 /* xchg %ax,%ax */
619 /* Entries for branches with BND prefix in the non-lazey procedure
620 linkage table look like this. */
622 static const bfd_byte elf_x86_64_non_lazy_bnd_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
624 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
625 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
629 /* Entries for branches with IBT-enabled in the non-lazey procedure
630 linkage table look like this. They have the same size as the lazy
633 static const bfd_byte elf_x86_64_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
635 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
636 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
637 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
638 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopl 0x0(%rax,%rax,1) */
641 /* Entries for branches with IBT-enabled in the x32 non-lazey procedure
642 linkage table look like this. They have the same size as the lazy
645 static const bfd_byte elf_x32_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
647 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
648 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
649 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
650 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
653 /* .eh_frame covering the lazy .plt section. */
655 static const bfd_byte elf_x86_64_eh_frame_lazy_plt[] =
657 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
658 0, 0, 0, 0, /* CIE ID */
660 'z', 'R', 0, /* Augmentation string */
661 1, /* Code alignment factor */
662 0x78, /* Data alignment factor */
663 16, /* Return address column */
664 1, /* Augmentation size */
665 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
666 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
667 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
668 DW_CFA_nop, DW_CFA_nop,
670 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
671 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
672 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
673 0, 0, 0, 0, /* .plt size goes here */
674 0, /* Augmentation size */
675 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
676 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
677 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
678 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
679 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
680 11, /* Block length */
681 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
682 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
683 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
684 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
685 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
688 /* .eh_frame covering the lazy BND .plt section. */
690 static const bfd_byte elf_x86_64_eh_frame_lazy_bnd_plt[] =
692 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
693 0, 0, 0, 0, /* CIE ID */
695 'z', 'R', 0, /* Augmentation string */
696 1, /* Code alignment factor */
697 0x78, /* Data alignment factor */
698 16, /* Return address column */
699 1, /* Augmentation size */
700 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
701 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
702 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
703 DW_CFA_nop, DW_CFA_nop,
705 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
706 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
707 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
708 0, 0, 0, 0, /* .plt size goes here */
709 0, /* Augmentation size */
710 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
711 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
712 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
713 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
714 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
715 11, /* Block length */
716 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
717 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
718 DW_OP_lit15, DW_OP_and, DW_OP_lit5, DW_OP_ge,
719 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
720 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
723 /* .eh_frame covering the lazy .plt section with IBT-enabled. */
725 static const bfd_byte elf_x86_64_eh_frame_lazy_ibt_plt[] =
727 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
728 0, 0, 0, 0, /* CIE ID */
730 'z', 'R', 0, /* Augmentation string */
731 1, /* Code alignment factor */
732 0x78, /* Data alignment factor */
733 16, /* Return address column */
734 1, /* Augmentation size */
735 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
736 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
737 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
738 DW_CFA_nop, DW_CFA_nop,
740 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
741 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
742 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
743 0, 0, 0, 0, /* .plt size goes here */
744 0, /* Augmentation size */
745 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
746 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
747 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
748 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
749 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
750 11, /* Block length */
751 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
752 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
753 DW_OP_lit15, DW_OP_and, DW_OP_lit10, DW_OP_ge,
754 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
755 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
758 /* .eh_frame covering the x32 lazy .plt section with IBT-enabled. */
760 static const bfd_byte elf_x32_eh_frame_lazy_ibt_plt[] =
762 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
763 0, 0, 0, 0, /* CIE ID */
765 'z', 'R', 0, /* Augmentation string */
766 1, /* Code alignment factor */
767 0x78, /* Data alignment factor */
768 16, /* Return address column */
769 1, /* Augmentation size */
770 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
771 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
772 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
773 DW_CFA_nop, DW_CFA_nop,
775 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
776 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
777 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
778 0, 0, 0, 0, /* .plt size goes here */
779 0, /* Augmentation size */
780 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
781 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
782 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
783 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
784 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
785 11, /* Block length */
786 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
787 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
788 DW_OP_lit15, DW_OP_and, DW_OP_lit9, DW_OP_ge,
789 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
790 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
793 /* .eh_frame covering the non-lazy .plt section. */
795 static const bfd_byte elf_x86_64_eh_frame_non_lazy_plt[] =
797 #define PLT_GOT_FDE_LENGTH 20
798 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
799 0, 0, 0, 0, /* CIE ID */
801 'z', 'R', 0, /* Augmentation string */
802 1, /* Code alignment factor */
803 0x78, /* Data alignment factor */
804 16, /* Return address column */
805 1, /* Augmentation size */
806 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
807 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
808 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
809 DW_CFA_nop, DW_CFA_nop,
811 PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */
812 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
813 0, 0, 0, 0, /* the start of non-lazy .plt goes here */
814 0, 0, 0, 0, /* non-lazy .plt size goes here */
815 0, /* Augmentation size */
816 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop,
817 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
820 /* Architecture-specific backend data for x86-64. */
822 struct elf_x86_64_backend_data
832 #define get_elf_x86_64_arch_data(bed) \
833 ((const struct elf_x86_64_backend_data *) (bed)->arch_data)
835 #define get_elf_x86_64_backend_data(abfd) \
836 get_elf_x86_64_arch_data (get_elf_backend_data (abfd))
838 /* These are the standard parameters. */
839 static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_plt =
841 elf_x86_64_lazy_plt0_entry, /* plt0_entry */
842 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
843 elf_x86_64_lazy_plt_entry, /* plt_entry */
844 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
845 2, /* plt0_got1_offset */
846 8, /* plt0_got2_offset */
847 12, /* plt0_got2_insn_end */
848 2, /* plt_got_offset */
849 7, /* plt_reloc_offset */
850 12, /* plt_plt_offset */
851 6, /* plt_got_insn_size */
852 LAZY_PLT_ENTRY_SIZE, /* plt_plt_insn_end */
853 6, /* plt_lazy_offset */
854 elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */
855 elf_x86_64_lazy_plt_entry, /* pic_plt_entry */
856 elf_x86_64_eh_frame_lazy_plt, /* eh_frame_plt */
857 sizeof (elf_x86_64_eh_frame_lazy_plt) /* eh_frame_plt_size */
860 static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_plt =
862 elf_x86_64_non_lazy_plt_entry, /* plt_entry */
863 elf_x86_64_non_lazy_plt_entry, /* pic_plt_entry */
864 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
865 2, /* plt_got_offset */
866 6, /* plt_got_insn_size */
867 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
868 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
871 static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_bnd_plt =
873 elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */
874 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
875 elf_x86_64_lazy_bnd_plt_entry, /* plt_entry */
876 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
877 2, /* plt0_got1_offset */
878 1+8, /* plt0_got2_offset */
879 1+12, /* plt0_got2_insn_end */
880 1+2, /* plt_got_offset */
881 1, /* plt_reloc_offset */
882 7, /* plt_plt_offset */
883 1+6, /* plt_got_insn_size */
884 11, /* plt_plt_insn_end */
885 0, /* plt_lazy_offset */
886 elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */
887 elf_x86_64_lazy_bnd_plt_entry, /* pic_plt_entry */
888 elf_x86_64_eh_frame_lazy_bnd_plt, /* eh_frame_plt */
889 sizeof (elf_x86_64_eh_frame_lazy_bnd_plt) /* eh_frame_plt_size */
892 static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_bnd_plt =
894 elf_x86_64_non_lazy_bnd_plt_entry, /* plt_entry */
895 elf_x86_64_non_lazy_bnd_plt_entry, /* pic_plt_entry */
896 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
897 1+2, /* plt_got_offset */
898 1+6, /* plt_got_insn_size */
899 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
900 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
903 static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_ibt_plt =
905 elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */
906 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
907 elf_x86_64_lazy_ibt_plt_entry, /* plt_entry */
908 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
909 2, /* plt0_got1_offset */
910 1+8, /* plt0_got2_offset */
911 1+12, /* plt0_got2_insn_end */
912 4+1+2, /* plt_got_offset */
913 4+1, /* plt_reloc_offset */
914 4+1+6, /* plt_plt_offset */
915 4+1+6, /* plt_got_insn_size */
916 4+1+5+5, /* plt_plt_insn_end */
917 0, /* plt_lazy_offset */
918 elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */
919 elf_x86_64_lazy_ibt_plt_entry, /* pic_plt_entry */
920 elf_x86_64_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
921 sizeof (elf_x86_64_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
924 static const struct elf_x86_lazy_plt_layout elf_x32_lazy_ibt_plt =
926 elf_x86_64_lazy_plt0_entry, /* plt0_entry */
927 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
928 elf_x32_lazy_ibt_plt_entry, /* plt_entry */
929 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
930 2, /* plt0_got1_offset */
931 8, /* plt0_got2_offset */
932 12, /* plt0_got2_insn_end */
933 4+2, /* plt_got_offset */
934 4+1, /* plt_reloc_offset */
935 4+6, /* plt_plt_offset */
936 4+6, /* plt_got_insn_size */
937 4+5+5, /* plt_plt_insn_end */
938 0, /* plt_lazy_offset */
939 elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */
940 elf_x32_lazy_ibt_plt_entry, /* pic_plt_entry */
941 elf_x32_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
942 sizeof (elf_x32_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
945 static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_ibt_plt =
947 elf_x86_64_non_lazy_ibt_plt_entry, /* plt_entry */
948 elf_x86_64_non_lazy_ibt_plt_entry, /* pic_plt_entry */
949 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
950 4+1+2, /* plt_got_offset */
951 4+1+6, /* plt_got_insn_size */
952 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
953 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
956 static const struct elf_x86_non_lazy_plt_layout elf_x32_non_lazy_ibt_plt =
958 elf_x32_non_lazy_ibt_plt_entry, /* plt_entry */
959 elf_x32_non_lazy_ibt_plt_entry, /* pic_plt_entry */
960 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
961 4+2, /* plt_got_offset */
962 4+6, /* plt_got_insn_size */
963 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
964 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
967 static const struct elf_x86_64_backend_data elf_x86_64_arch_bed =
972 #define elf_backend_arch_data &elf_x86_64_arch_bed
975 elf64_x86_64_elf_object_p (bfd *abfd)
977 /* Set the right machine number for an x86-64 elf64 file. */
978 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
983 elf32_x86_64_elf_object_p (bfd *abfd)
985 /* Set the right machine number for an x86-64 elf32 file. */
986 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32);
990 /* Return TRUE if the TLS access code sequence support transition
994 elf_x86_64_check_tls_transition (bfd *abfd,
995 struct bfd_link_info *info,
998 Elf_Internal_Shdr *symtab_hdr,
999 struct elf_link_hash_entry **sym_hashes,
1000 unsigned int r_type,
1001 const Elf_Internal_Rela *rel,
1002 const Elf_Internal_Rela *relend)
1005 unsigned long r_symndx;
1006 bfd_boolean largepic = FALSE;
1007 struct elf_link_hash_entry *h;
1009 struct elf_x86_link_hash_table *htab;
1011 bfd_boolean indirect_call;
1013 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
1014 offset = rel->r_offset;
1017 case R_X86_64_TLSGD:
1018 case R_X86_64_TLSLD:
1019 if ((rel + 1) >= relend)
1022 if (r_type == R_X86_64_TLSGD)
1024 /* Check transition from GD access model. For 64bit, only
1025 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1026 .word 0x6666; rex64; call __tls_get_addr@PLT
1028 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1030 call *__tls_get_addr@GOTPCREL(%rip)
1031 which may be converted to
1032 addr32 call __tls_get_addr
1033 can transit to different access model. For 32bit, only
1034 leaq foo@tlsgd(%rip), %rdi
1035 .word 0x6666; rex64; call __tls_get_addr@PLT
1037 leaq foo@tlsgd(%rip), %rdi
1039 call *__tls_get_addr@GOTPCREL(%rip)
1040 which may be converted to
1041 addr32 call __tls_get_addr
1042 can transit to different access model. For largepic,
1044 leaq foo@tlsgd(%rip), %rdi
1045 movabsq $__tls_get_addr@pltoff, %rax
1049 leaq foo@tlsgd(%rip), %rdi
1050 movabsq $__tls_get_addr@pltoff, %rax
1054 static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };
1056 if ((offset + 12) > sec->size)
1059 call = contents + offset + 4;
1061 || !((call[1] == 0x48
1069 && call[3] == 0xe8)))
1071 if (!ABI_64_P (abfd)
1072 || (offset + 19) > sec->size
1074 || memcmp (call - 7, leaq + 1, 3) != 0
1075 || memcmp (call, "\x48\xb8", 2) != 0
1079 || !((call[10] == 0x48 && call[12] == 0xd8)
1080 || (call[10] == 0x4c && call[12] == 0xf8)))
1084 else if (ABI_64_P (abfd))
1087 || memcmp (contents + offset - 4, leaq, 4) != 0)
1093 || memcmp (contents + offset - 3, leaq + 1, 3) != 0)
1096 indirect_call = call[2] == 0xff;
1100 /* Check transition from LD access model. Only
1101 leaq foo@tlsld(%rip), %rdi;
1102 call __tls_get_addr@PLT
1104 leaq foo@tlsld(%rip), %rdi;
1105 call *__tls_get_addr@GOTPCREL(%rip)
1106 which may be converted to
1107 addr32 call __tls_get_addr
1108 can transit to different access model. For largepic
1110 leaq foo@tlsld(%rip), %rdi
1111 movabsq $__tls_get_addr@pltoff, %rax
1115 leaq foo@tlsld(%rip), %rdi
1116 movabsq $__tls_get_addr@pltoff, %rax
1120 static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };
1122 if (offset < 3 || (offset + 9) > sec->size)
1125 if (memcmp (contents + offset - 3, lea, 3) != 0)
1128 call = contents + offset + 4;
1129 if (!(call[0] == 0xe8
1130 || (call[0] == 0xff && call[1] == 0x15)
1131 || (call[0] == 0x67 && call[1] == 0xe8)))
1133 if (!ABI_64_P (abfd)
1134 || (offset + 19) > sec->size
1135 || memcmp (call, "\x48\xb8", 2) != 0
1139 || !((call[10] == 0x48 && call[12] == 0xd8)
1140 || (call[10] == 0x4c && call[12] == 0xf8)))
1144 indirect_call = call[0] == 0xff;
1147 r_symndx = htab->r_sym (rel[1].r_info);
1148 if (r_symndx < symtab_hdr->sh_info)
1151 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1153 || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr)
1157 r_type = (ELF32_R_TYPE (rel[1].r_info)
1158 & ~R_X86_64_converted_reloc_bit);
1160 return r_type == R_X86_64_PLTOFF64;
1161 else if (indirect_call)
1162 return r_type == R_X86_64_GOTPCRELX;
1164 return (r_type == R_X86_64_PC32 || r_type == R_X86_64_PLT32);
1167 case R_X86_64_GOTTPOFF:
1168 /* Check transition from IE access model:
1169 mov foo@gottpoff(%rip), %reg
1170 add foo@gottpoff(%rip), %reg
1173 /* Check REX prefix first. */
1174 if (offset >= 3 && (offset + 4) <= sec->size)
1176 val = bfd_get_8 (abfd, contents + offset - 3);
1177 if (val != 0x48 && val != 0x4c)
1179 /* X32 may have 0x44 REX prefix or no REX prefix. */
1180 if (ABI_64_P (abfd))
1186 /* X32 may not have any REX prefix. */
1187 if (ABI_64_P (abfd))
1189 if (offset < 2 || (offset + 3) > sec->size)
1193 val = bfd_get_8 (abfd, contents + offset - 2);
1194 if (val != 0x8b && val != 0x03)
1197 val = bfd_get_8 (abfd, contents + offset - 1);
1198 return (val & 0xc7) == 5;
1200 case R_X86_64_GOTPC32_TLSDESC:
1201 /* Check transition from GDesc access model:
1202 leaq x@tlsdesc(%rip), %rax
1204 Make sure it's a leaq adding rip to a 32-bit offset
1205 into any register, although it's probably almost always
1208 if (offset < 3 || (offset + 4) > sec->size)
1211 val = bfd_get_8 (abfd, contents + offset - 3);
1212 if ((val & 0xfb) != 0x48)
1215 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1218 val = bfd_get_8 (abfd, contents + offset - 1);
1219 return (val & 0xc7) == 0x05;
1221 case R_X86_64_TLSDESC_CALL:
1222 /* Check transition from GDesc access model:
1223 call *x@tlsdesc(%rax)
1225 if (offset + 2 <= sec->size)
1227 /* Make sure that it's a call *x@tlsdesc(%rax). */
1228 call = contents + offset;
1229 return call[0] == 0xff && call[1] == 0x10;
1239 /* Return TRUE if the TLS access transition is OK or no transition
1240 will be performed. Update R_TYPE if there is a transition. */
1243 elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
1244 asection *sec, bfd_byte *contents,
1245 Elf_Internal_Shdr *symtab_hdr,
1246 struct elf_link_hash_entry **sym_hashes,
1247 unsigned int *r_type, int tls_type,
1248 const Elf_Internal_Rela *rel,
1249 const Elf_Internal_Rela *relend,
1250 struct elf_link_hash_entry *h,
1251 unsigned long r_symndx,
1252 bfd_boolean from_relocate_section)
1254 unsigned int from_type = *r_type;
1255 unsigned int to_type = from_type;
1256 bfd_boolean check = TRUE;
1258 /* Skip TLS transition for functions. */
1260 && (h->type == STT_FUNC
1261 || h->type == STT_GNU_IFUNC))
1266 case R_X86_64_TLSGD:
1267 case R_X86_64_GOTPC32_TLSDESC:
1268 case R_X86_64_TLSDESC_CALL:
1269 case R_X86_64_GOTTPOFF:
1270 if (bfd_link_executable (info))
1273 to_type = R_X86_64_TPOFF32;
1275 to_type = R_X86_64_GOTTPOFF;
1278 /* When we are called from elf_x86_64_relocate_section, there may
1279 be additional transitions based on TLS_TYPE. */
1280 if (from_relocate_section)
1282 unsigned int new_to_type = to_type;
1284 if (TLS_TRANSITION_IE_TO_LE_P (info, h, tls_type))
1285 new_to_type = R_X86_64_TPOFF32;
1287 if (to_type == R_X86_64_TLSGD
1288 || to_type == R_X86_64_GOTPC32_TLSDESC
1289 || to_type == R_X86_64_TLSDESC_CALL)
1291 if (tls_type == GOT_TLS_IE)
1292 new_to_type = R_X86_64_GOTTPOFF;
1295 /* We checked the transition before when we were called from
1296 elf_x86_64_check_relocs. We only want to check the new
1297 transition which hasn't been checked before. */
1298 check = new_to_type != to_type && from_type == to_type;
1299 to_type = new_to_type;
1304 case R_X86_64_TLSLD:
1305 if (bfd_link_executable (info))
1306 to_type = R_X86_64_TPOFF32;
1313 /* Return TRUE if there is no transition. */
1314 if (from_type == to_type)
1317 /* Check if the transition can be performed. */
1319 && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents,
1320 symtab_hdr, sym_hashes,
1321 from_type, rel, relend))
1323 reloc_howto_type *from, *to;
1326 from = elf_x86_64_rtype_to_howto (abfd, from_type);
1327 to = elf_x86_64_rtype_to_howto (abfd, to_type);
1330 name = h->root.root.string;
1333 struct elf_x86_link_hash_table *htab;
1335 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
1340 Elf_Internal_Sym *isym;
1342 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1344 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1349 /* xgettext:c-format */
1350 (_("%B: TLS transition from %s to %s against `%s' at %#Lx "
1351 "in section `%A' failed"),
1352 abfd, from->name, to->name, name, rel->r_offset, sec);
1353 bfd_set_error (bfd_error_bad_value);
1361 /* Rename some of the generic section flags to better document how they
1363 #define check_relocs_failed sec_flg0
1366 elf_x86_64_need_pic (struct bfd_link_info *info,
1367 bfd *input_bfd, asection *sec,
1368 struct elf_link_hash_entry *h,
1369 Elf_Internal_Shdr *symtab_hdr,
1370 Elf_Internal_Sym *isym,
1371 reloc_howto_type *howto)
1374 const char *und = "";
1375 const char *pic = "";
1381 name = h->root.root.string;
1382 switch (ELF_ST_VISIBILITY (h->other))
1385 v = _("hidden symbol ");
1388 v = _("internal symbol ");
1391 v = _("protected symbol ");
1394 if (((struct elf_x86_link_hash_entry *) h)->def_protected)
1395 v = _("protected symbol ");
1398 pic = _("; recompile with -fPIC");
1402 if (!h->def_regular && !h->def_dynamic)
1403 und = _("undefined ");
1407 name = bfd_elf_sym_name (input_bfd, symtab_hdr, isym, NULL);
1408 pic = _("; recompile with -fPIC");
1411 if (bfd_link_dll (info))
1412 object = _("a shared object");
1413 else if (bfd_link_pie (info))
1414 object = _("a PIE object");
1416 object = _("a PDE object");
1418 /* xgettext:c-format */
1419 _bfd_error_handler (_("%B: relocation %s against %s%s`%s' can "
1420 "not be used when making %s%s"),
1421 input_bfd, howto->name, und, v, name,
1423 bfd_set_error (bfd_error_bad_value);
1424 sec->check_relocs_failed = 1;
1428 /* With the local symbol, foo, we convert
1429 mov foo@GOTPCREL(%rip), %reg
1433 call/jmp *foo@GOTPCREL(%rip)
1435 nop call foo/jmp foo nop
1436 When PIC is false, convert
1437 test %reg, foo@GOTPCREL(%rip)
1441 binop foo@GOTPCREL(%rip), %reg
1444 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1448 elf_x86_64_convert_load_reloc (bfd *abfd,
1450 unsigned int *r_type_p,
1451 Elf_Internal_Rela *irel,
1452 struct elf_link_hash_entry *h,
1453 bfd_boolean *converted,
1454 struct bfd_link_info *link_info)
1456 struct elf_x86_link_hash_table *htab;
1458 bfd_boolean no_overflow;
1460 bfd_boolean to_reloc_pc32;
1462 bfd_signed_vma raddend;
1463 unsigned int opcode;
1465 unsigned int r_type = *r_type_p;
1466 unsigned int r_symndx;
1467 bfd_vma roff = irel->r_offset;
1469 if (roff < (r_type == R_X86_64_REX_GOTPCRELX ? 3 : 2))
1472 raddend = irel->r_addend;
1473 /* Addend for 32-bit PC-relative relocation must be -4. */
1477 htab = elf_x86_hash_table (link_info, X86_64_ELF_DATA);
1478 is_pic = bfd_link_pic (link_info);
1480 relocx = (r_type == R_X86_64_GOTPCRELX
1481 || r_type == R_X86_64_REX_GOTPCRELX);
1483 /* TRUE if --no-relax is used. */
1484 no_overflow = link_info->disable_target_specific_optimizations > 1;
1486 r_symndx = htab->r_sym (irel->r_info);
1488 opcode = bfd_get_8 (abfd, contents + roff - 2);
1490 /* Convert mov to lea since it has been done for a while. */
1493 /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX
1494 for call, jmp or one of adc, add, and, cmp, or, sbb, sub,
1495 test, xor instructions. */
1500 /* We convert only to R_X86_64_PC32:
1502 2. R_X86_64_GOTPCREL since we can't modify REX byte.
1503 3. no_overflow is true.
1506 to_reloc_pc32 = (opcode == 0xff
1511 /* Get the symbol referred to by the reloc. */
1514 Elf_Internal_Sym *isym
1515 = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);
1517 /* Skip relocation against undefined symbols. */
1518 if (isym->st_shndx == SHN_UNDEF)
1521 if (isym->st_shndx == SHN_ABS)
1522 tsec = bfd_abs_section_ptr;
1523 else if (isym->st_shndx == SHN_COMMON)
1524 tsec = bfd_com_section_ptr;
1525 else if (isym->st_shndx == SHN_X86_64_LCOMMON)
1526 tsec = &_bfd_elf_large_com_section;
1528 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
1532 /* Undefined weak symbol is only bound locally in executable
1533 and its reference is resolved as 0 without relocation
1534 overflow. We can only perform this optimization for
1535 GOTPCRELX relocations since we need to modify REX byte.
1536 It is OK convert mov with R_X86_64_GOTPCREL to
1538 bfd_boolean local_ref;
1539 struct elf_x86_link_hash_entry *eh = elf_x86_hash_entry (h);
1541 /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P. */
1542 local_ref = SYMBOL_REFERENCES_LOCAL_P (link_info, h);
1543 if ((relocx || opcode == 0x8b)
1544 && (h->root.type == bfd_link_hash_undefweak
1550 /* Skip for branch instructions since R_X86_64_PC32
1557 /* For non-branch instructions, we can convert to
1558 R_X86_64_32/R_X86_64_32S since we know if there
1560 to_reloc_pc32 = FALSE;
1563 /* Since we don't know the current PC when PIC is true,
1564 we can't convert to R_X86_64_PC32. */
1565 if (to_reloc_pc32 && is_pic)
1570 /* Avoid optimizing GOTPCREL relocations againt _DYNAMIC since
1571 ld.so may use its link-time address. */
1572 else if (h->start_stop
1575 || h->root.type == bfd_link_hash_defined
1576 || h->root.type == bfd_link_hash_defweak)
1577 && h != htab->elf.hdynamic
1580 /* bfd_link_hash_new or bfd_link_hash_undefined is
1581 set by an assignment in a linker script in
1582 bfd_elf_record_link_assignment. start_stop is set
1583 on __start_SECNAME/__stop_SECNAME which mark section
1588 && (h->root.type == bfd_link_hash_new
1589 || h->root.type == bfd_link_hash_undefined
1590 || ((h->root.type == bfd_link_hash_defined
1591 || h->root.type == bfd_link_hash_defweak)
1592 && h->root.u.def.section == bfd_und_section_ptr))))
1594 /* Skip since R_X86_64_32/R_X86_64_32S may overflow. */
1599 tsec = h->root.u.def.section;
1605 /* Don't convert GOTPCREL relocation against large section. */
1606 if (elf_section_data (tsec) != NULL
1607 && (elf_section_flags (tsec) & SHF_X86_64_LARGE) != 0)
1610 /* Skip since R_X86_64_PC32/R_X86_64_32/R_X86_64_32S may overflow. */
1617 /* We have "call/jmp *foo@GOTPCREL(%rip)". */
1622 /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to
1624 modrm = bfd_get_8 (abfd, contents + roff - 1);
1627 /* Convert to "jmp foo nop". */
1630 nop_offset = irel->r_offset + 3;
1631 disp = bfd_get_32 (abfd, contents + irel->r_offset);
1632 irel->r_offset -= 1;
1633 bfd_put_32 (abfd, disp, contents + irel->r_offset);
1637 struct elf_x86_link_hash_entry *eh
1638 = (struct elf_x86_link_hash_entry *) h;
1640 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1643 /* To support TLS optimization, always use addr32 prefix for
1644 "call *__tls_get_addr@GOTPCREL(%rip)". */
1645 if (eh && eh->tls_get_addr)
1648 nop_offset = irel->r_offset - 2;
1652 nop = link_info->call_nop_byte;
1653 if (link_info->call_nop_as_suffix)
1655 nop_offset = irel->r_offset + 3;
1656 disp = bfd_get_32 (abfd, contents + irel->r_offset);
1657 irel->r_offset -= 1;
1658 bfd_put_32 (abfd, disp, contents + irel->r_offset);
1661 nop_offset = irel->r_offset - 2;
1664 bfd_put_8 (abfd, nop, contents + nop_offset);
1665 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
1666 r_type = R_X86_64_PC32;
1671 unsigned int rex_mask = REX_R;
1673 if (r_type == R_X86_64_REX_GOTPCRELX)
1674 rex = bfd_get_8 (abfd, contents + roff - 3);
1682 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
1683 "lea foo(%rip), %reg". */
1685 r_type = R_X86_64_PC32;
1689 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
1690 "mov $foo, %reg". */
1692 modrm = bfd_get_8 (abfd, contents + roff - 1);
1693 modrm = 0xc0 | (modrm & 0x38) >> 3;
1694 if ((rex & REX_W) != 0
1695 && ABI_64_P (link_info->output_bfd))
1697 /* Keep the REX_W bit in REX byte for LP64. */
1698 r_type = R_X86_64_32S;
1699 goto rewrite_modrm_rex;
1703 /* If the REX_W bit in REX byte isn't needed,
1704 use R_X86_64_32 and clear the W bit to avoid
1705 sign-extend imm32 to imm64. */
1706 r_type = R_X86_64_32;
1707 /* Clear the W bit in REX byte. */
1709 goto rewrite_modrm_rex;
1715 /* R_X86_64_PC32 isn't supported. */
1719 modrm = bfd_get_8 (abfd, contents + roff - 1);
1722 /* Convert "test %reg, foo@GOTPCREL(%rip)" to
1723 "test $foo, %reg". */
1724 modrm = 0xc0 | (modrm & 0x38) >> 3;
1729 /* Convert "binop foo@GOTPCREL(%rip), %reg" to
1730 "binop $foo, %reg". */
1731 modrm = 0xc0 | (modrm & 0x38) >> 3 | (opcode & 0x3c);
1735 /* Use R_X86_64_32 with 32-bit operand to avoid relocation
1736 overflow when sign-extending imm32 to imm64. */
1737 r_type = (rex & REX_W) != 0 ? R_X86_64_32S : R_X86_64_32;
1740 bfd_put_8 (abfd, modrm, contents + roff - 1);
1744 /* Move the R bit to the B bit in REX byte. */
1745 rex = (rex & ~rex_mask) | (rex & REX_R) >> 2;
1746 bfd_put_8 (abfd, rex, contents + roff - 3);
1749 /* No addend for R_X86_64_32/R_X86_64_32S relocations. */
1753 bfd_put_8 (abfd, opcode, contents + roff - 2);
1757 irel->r_info = htab->r_info (r_symndx,
1758 r_type | R_X86_64_converted_reloc_bit);
1765 /* Look through the relocs for a section during the first phase, and
1766 calculate needed space in the global offset table, procedure
1767 linkage table, and dynamic reloc sections. */
1770 elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
1772 const Elf_Internal_Rela *relocs)
1774 struct elf_x86_link_hash_table *htab;
1775 Elf_Internal_Shdr *symtab_hdr;
1776 struct elf_link_hash_entry **sym_hashes;
1777 const Elf_Internal_Rela *rel;
1778 const Elf_Internal_Rela *rel_end;
1781 bfd_boolean converted;
1783 if (bfd_link_relocatable (info))
1786 /* Don't do anything special with non-loaded, non-alloced sections.
1787 In particular, any relocs in such sections should not affect GOT
1788 and PLT reference counting (ie. we don't allow them to create GOT
1789 or PLT entries), there's no possibility or desire to optimize TLS
1790 relocs, and there's not much point in propagating relocs to shared
1791 libs that the dynamic linker won't relocate. */
1792 if ((sec->flags & SEC_ALLOC) == 0)
1795 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
1798 sec->check_relocs_failed = 1;
1802 BFD_ASSERT (is_x86_elf (abfd, htab));
1804 /* Get the section contents. */
1805 if (elf_section_data (sec)->this_hdr.contents != NULL)
1806 contents = elf_section_data (sec)->this_hdr.contents;
1807 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1809 sec->check_relocs_failed = 1;
1813 symtab_hdr = &elf_symtab_hdr (abfd);
1814 sym_hashes = elf_sym_hashes (abfd);
1820 rel_end = relocs + sec->reloc_count;
1821 for (rel = relocs; rel < rel_end; rel++)
1823 unsigned int r_type;
1824 unsigned int r_symndx;
1825 struct elf_link_hash_entry *h;
1826 struct elf_x86_link_hash_entry *eh;
1827 Elf_Internal_Sym *isym;
1829 bfd_boolean size_reloc;
1830 bfd_boolean converted_reloc;
1832 r_symndx = htab->r_sym (rel->r_info);
1833 r_type = ELF32_R_TYPE (rel->r_info);
1835 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1837 /* xgettext:c-format */
1838 _bfd_error_handler (_("%B: bad symbol index: %d"),
1843 if (r_symndx < symtab_hdr->sh_info)
1845 /* A local symbol. */
1846 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1851 /* Check relocation against local STT_GNU_IFUNC symbol. */
1852 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1854 h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel,
1859 /* Fake a STT_GNU_IFUNC symbol. */
1860 h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr,
1862 h->type = STT_GNU_IFUNC;
1865 h->forced_local = 1;
1866 h->root.type = bfd_link_hash_defined;
1874 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1875 while (h->root.type == bfd_link_hash_indirect
1876 || h->root.type == bfd_link_hash_warning)
1877 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1880 /* Check invalid x32 relocations. */
1881 if (!ABI_64_P (abfd))
1887 case R_X86_64_DTPOFF64:
1888 case R_X86_64_TPOFF64:
1890 case R_X86_64_GOTOFF64:
1891 case R_X86_64_GOT64:
1892 case R_X86_64_GOTPCREL64:
1893 case R_X86_64_GOTPC64:
1894 case R_X86_64_GOTPLT64:
1895 case R_X86_64_PLTOFF64:
1898 name = h->root.root.string;
1900 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1903 /* xgettext:c-format */
1904 (_("%B: relocation %s against symbol `%s' isn't "
1905 "supported in x32 mode"), abfd,
1906 x86_64_elf_howto_table[r_type].name, name);
1907 bfd_set_error (bfd_error_bad_value);
1915 /* It is referenced by a non-shared object. */
1917 h->root.non_ir_ref_regular = 1;
1919 if (h->type == STT_GNU_IFUNC)
1920 elf_tdata (info->output_bfd)->has_gnu_symbols
1921 |= elf_gnu_symbol_ifunc;
1924 converted_reloc = FALSE;
1925 if ((r_type == R_X86_64_GOTPCREL
1926 || r_type == R_X86_64_GOTPCRELX
1927 || r_type == R_X86_64_REX_GOTPCRELX)
1928 && (h == NULL || h->type != STT_GNU_IFUNC))
1930 Elf_Internal_Rela *irel = (Elf_Internal_Rela *) rel;
1931 if (!elf_x86_64_convert_load_reloc (abfd, contents, &r_type,
1932 irel, h, &converted_reloc,
1936 if (converted_reloc)
1940 if (! elf_x86_64_tls_transition (info, abfd, sec, contents,
1941 symtab_hdr, sym_hashes,
1942 &r_type, GOT_UNKNOWN,
1943 rel, rel_end, h, r_symndx, FALSE))
1946 eh = (struct elf_x86_link_hash_entry *) h;
1949 case R_X86_64_TLSLD:
1950 htab->tls_ld_or_ldm_got.refcount += 1;
1953 case R_X86_64_TPOFF32:
1954 if (!bfd_link_executable (info) && ABI_64_P (abfd))
1955 return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
1956 &x86_64_elf_howto_table[r_type]);
1958 eh->has_got_reloc = 1;
1961 case R_X86_64_GOTTPOFF:
1962 if (!bfd_link_executable (info))
1963 info->flags |= DF_STATIC_TLS;
1966 case R_X86_64_GOT32:
1967 case R_X86_64_GOTPCREL:
1968 case R_X86_64_GOTPCRELX:
1969 case R_X86_64_REX_GOTPCRELX:
1970 case R_X86_64_TLSGD:
1971 case R_X86_64_GOT64:
1972 case R_X86_64_GOTPCREL64:
1973 case R_X86_64_GOTPLT64:
1974 case R_X86_64_GOTPC32_TLSDESC:
1975 case R_X86_64_TLSDESC_CALL:
1976 /* This symbol requires a global offset table entry. */
1978 int tls_type, old_tls_type;
1982 default: tls_type = GOT_NORMAL; break;
1983 case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
1984 case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
1985 case R_X86_64_GOTPC32_TLSDESC:
1986 case R_X86_64_TLSDESC_CALL:
1987 tls_type = GOT_TLS_GDESC; break;
1992 h->got.refcount += 1;
1993 old_tls_type = eh->tls_type;
1997 bfd_signed_vma *local_got_refcounts;
1999 /* This is a global offset table entry for a local symbol. */
2000 local_got_refcounts = elf_local_got_refcounts (abfd);
2001 if (local_got_refcounts == NULL)
2005 size = symtab_hdr->sh_info;
2006 size *= sizeof (bfd_signed_vma)
2007 + sizeof (bfd_vma) + sizeof (char);
2008 local_got_refcounts = ((bfd_signed_vma *)
2009 bfd_zalloc (abfd, size));
2010 if (local_got_refcounts == NULL)
2012 elf_local_got_refcounts (abfd) = local_got_refcounts;
2013 elf_x86_local_tlsdesc_gotent (abfd)
2014 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
2015 elf_x86_local_got_tls_type (abfd)
2016 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
2018 local_got_refcounts[r_symndx] += 1;
2020 = elf_x86_local_got_tls_type (abfd) [r_symndx];
2023 /* If a TLS symbol is accessed using IE at least once,
2024 there is no point to use dynamic model for it. */
2025 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
2026 && (! GOT_TLS_GD_ANY_P (old_tls_type)
2027 || tls_type != GOT_TLS_IE))
2029 if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
2030 tls_type = old_tls_type;
2031 else if (GOT_TLS_GD_ANY_P (old_tls_type)
2032 && GOT_TLS_GD_ANY_P (tls_type))
2033 tls_type |= old_tls_type;
2037 name = h->root.root.string;
2039 name = bfd_elf_sym_name (abfd, symtab_hdr,
2042 /* xgettext:c-format */
2043 (_("%B: '%s' accessed both as normal and"
2044 " thread local symbol"),
2046 bfd_set_error (bfd_error_bad_value);
2051 if (old_tls_type != tls_type)
2054 eh->tls_type = tls_type;
2056 elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type;
2061 case R_X86_64_GOTOFF64:
2062 case R_X86_64_GOTPC32:
2063 case R_X86_64_GOTPC64:
2066 eh->has_got_reloc = 1;
2069 case R_X86_64_PLT32:
2070 case R_X86_64_PLT32_BND:
2071 /* This symbol requires a procedure linkage table entry. We
2072 actually build the entry in adjust_dynamic_symbol,
2073 because this might be a case of linking PIC code which is
2074 never referenced by a dynamic object, in which case we
2075 don't need to generate a procedure linkage table entry
2078 /* If this is a local symbol, we resolve it directly without
2079 creating a procedure linkage table entry. */
2083 eh->has_got_reloc = 1;
2085 h->plt.refcount += 1;
2088 case R_X86_64_PLTOFF64:
2089 /* This tries to form the 'address' of a function relative
2090 to GOT. For global symbols we need a PLT entry. */
2094 h->plt.refcount += 1;
2098 case R_X86_64_SIZE32:
2099 case R_X86_64_SIZE64:
2104 if (!ABI_64_P (abfd))
2110 /* Check relocation overflow as these relocs may lead to
2111 run-time relocation overflow. Don't error out for
2112 sections we don't care about, such as debug sections or
2113 when relocation overflow check is disabled. */
2114 if (!info->no_reloc_overflow_check
2116 && (bfd_link_pic (info)
2117 || (bfd_link_executable (info)
2121 && (sec->flags & SEC_READONLY) == 0)))
2122 return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
2123 &x86_64_elf_howto_table[r_type]);
2129 case R_X86_64_PC32_BND:
2133 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
2134 eh->has_non_got_reloc = 1;
2135 /* We are called after all symbols have been resolved. Only
2136 relocation against STT_GNU_IFUNC symbol must go through
2139 && (bfd_link_executable (info)
2140 || h->type == STT_GNU_IFUNC))
2142 /* If this reloc is in a read-only section, we might
2143 need a copy reloc. We can't check reliably at this
2144 stage whether the section is read-only, as input
2145 sections have not yet been mapped to output sections.
2146 Tentatively set the flag for now, and correct in
2147 adjust_dynamic_symbol. */
2150 /* We may need a .plt entry if the symbol is a function
2151 defined in a shared lib or is a STT_GNU_IFUNC function
2152 referenced from the code or read-only section. */
2154 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
2155 h->plt.refcount += 1;
2157 if (r_type == R_X86_64_PC32)
2159 /* Since something like ".long foo - ." may be used
2160 as pointer, make sure that PLT is used if foo is
2161 a function defined in a shared library. */
2162 if ((sec->flags & SEC_CODE) == 0)
2163 h->pointer_equality_needed = 1;
2165 else if (r_type != R_X86_64_PC32_BND
2166 && r_type != R_X86_64_PC64)
2168 h->pointer_equality_needed = 1;
2169 /* At run-time, R_X86_64_64 can be resolved for both
2170 x86-64 and x32. But R_X86_64_32 and R_X86_64_32S
2171 can only be resolved for x32. */
2172 if ((sec->flags & SEC_READONLY) == 0
2173 && (r_type == R_X86_64_64
2174 || (!ABI_64_P (abfd)
2175 && (r_type == R_X86_64_32
2176 || r_type == R_X86_64_32S))))
2177 eh->func_pointer_refcount += 1;
2183 if (NEED_DYNAMIC_RELOCATION_P (info, h, sec, r_type,
2184 htab->pointer_r_type))
2186 struct elf_dyn_relocs *p;
2187 struct elf_dyn_relocs **head;
2189 /* We must copy these reloc types into the output file.
2190 Create a reloc section in dynobj and make room for
2194 sreloc = _bfd_elf_make_dynamic_reloc_section
2195 (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
2196 abfd, /*rela?*/ TRUE);
2202 /* If this is a global symbol, we count the number of
2203 relocations we need for this symbol. */
2205 head = &eh->dyn_relocs;
2208 /* Track dynamic relocs needed for local syms too.
2209 We really need local syms available to do this
2214 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2219 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2223 /* Beware of type punned pointers vs strict aliasing
2225 vpp = &(elf_section_data (s)->local_dynrel);
2226 head = (struct elf_dyn_relocs **)vpp;
2230 if (p == NULL || p->sec != sec)
2232 bfd_size_type amt = sizeof *p;
2234 p = ((struct elf_dyn_relocs *)
2235 bfd_alloc (htab->elf.dynobj, amt));
2246 /* Count size relocation as PC-relative relocation. */
2247 if (X86_PCREL_TYPE_P (r_type) || size_reloc)
2252 /* This relocation describes the C++ object vtable hierarchy.
2253 Reconstruct it for later use during GC. */
2254 case R_X86_64_GNU_VTINHERIT:
2255 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2259 /* This relocation describes which C++ vtable entries are actually
2260 used. Record for later use during GC. */
2261 case R_X86_64_GNU_VTENTRY:
2262 BFD_ASSERT (h != NULL);
2264 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2273 if (elf_section_data (sec)->this_hdr.contents != contents)
2275 if (!converted && !info->keep_memory)
2279 /* Cache the section contents for elf_link_input_bfd if any
2280 load is converted or --no-keep-memory isn't used. */
2281 elf_section_data (sec)->this_hdr.contents = contents;
2285 /* Cache relocations if any load is converted. */
2286 if (elf_section_data (sec)->relocs != relocs && converted)
2287 elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs;
2292 if (elf_section_data (sec)->this_hdr.contents != contents)
2294 sec->check_relocs_failed = 1;
2298 /* Return the relocation value for @tpoff relocation
2299 if STT_TLS virtual address is ADDRESS. */
2302 elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
2304 struct elf_link_hash_table *htab = elf_hash_table (info);
2305 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2306 bfd_vma static_tls_size;
2308 /* If tls_segment is NULL, we should have signalled an error already. */
2309 if (htab->tls_sec == NULL)
2312 /* Consider special static TLS alignment requirements. */
2313 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2314 return address - static_tls_size - htab->tls_sec->vma;
2317 /* Is the instruction before OFFSET in CONTENTS a 32bit relative
2321 is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset)
2323 /* Opcode Instruction
2326 0x0f 0x8x conditional jump */
2328 && (contents [offset - 1] == 0xe8
2329 || contents [offset - 1] == 0xe9))
2331 && contents [offset - 2] == 0x0f
2332 && (contents [offset - 1] & 0xf0) == 0x80));
2335 /* Relocate an x86_64 ELF section. */
2338 elf_x86_64_relocate_section (bfd *output_bfd,
2339 struct bfd_link_info *info,
2341 asection *input_section,
2343 Elf_Internal_Rela *relocs,
2344 Elf_Internal_Sym *local_syms,
2345 asection **local_sections)
2347 struct elf_x86_link_hash_table *htab;
2348 Elf_Internal_Shdr *symtab_hdr;
2349 struct elf_link_hash_entry **sym_hashes;
2350 bfd_vma *local_got_offsets;
2351 bfd_vma *local_tlsdesc_gotents;
2352 Elf_Internal_Rela *rel;
2353 Elf_Internal_Rela *wrel;
2354 Elf_Internal_Rela *relend;
2355 unsigned int plt_entry_size;
2357 /* Skip if check_relocs failed. */
2358 if (input_section->check_relocs_failed)
2361 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
2365 BFD_ASSERT (is_x86_elf (input_bfd, htab));
2367 plt_entry_size = htab->plt.plt_entry_size;
2368 symtab_hdr = &elf_symtab_hdr (input_bfd);
2369 sym_hashes = elf_sym_hashes (input_bfd);
2370 local_got_offsets = elf_local_got_offsets (input_bfd);
2371 local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
2373 _bfd_x86_elf_set_tls_module_base (info);
2375 rel = wrel = relocs;
2376 relend = relocs + input_section->reloc_count;
2377 for (; rel < relend; wrel++, rel++)
2379 unsigned int r_type, r_type_tls;
2380 reloc_howto_type *howto;
2381 unsigned long r_symndx;
2382 struct elf_link_hash_entry *h;
2383 struct elf_x86_link_hash_entry *eh;
2384 Elf_Internal_Sym *sym;
2386 bfd_vma off, offplt, plt_offset;
2388 bfd_boolean unresolved_reloc;
2389 bfd_reloc_status_type r;
2391 asection *base_got, *resolved_plt;
2393 bfd_boolean resolved_to_zero;
2394 bfd_boolean relative_reloc;
2395 bfd_boolean converted_reloc;
2397 r_type = ELF32_R_TYPE (rel->r_info);
2398 if (r_type == (int) R_X86_64_GNU_VTINHERIT
2399 || r_type == (int) R_X86_64_GNU_VTENTRY)
2406 converted_reloc = (r_type & R_X86_64_converted_reloc_bit) != 0;
2407 r_type &= ~R_X86_64_converted_reloc_bit;
2409 if (r_type >= (int) R_X86_64_standard)
2410 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
2412 if (r_type != (int) R_X86_64_32
2413 || ABI_64_P (output_bfd))
2414 howto = x86_64_elf_howto_table + r_type;
2416 howto = (x86_64_elf_howto_table
2417 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
2418 r_symndx = htab->r_sym (rel->r_info);
2422 unresolved_reloc = FALSE;
2423 if (r_symndx < symtab_hdr->sh_info)
2425 sym = local_syms + r_symndx;
2426 sec = local_sections[r_symndx];
2428 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
2430 st_size = sym->st_size;
2432 /* Relocate against local STT_GNU_IFUNC symbol. */
2433 if (!bfd_link_relocatable (info)
2434 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2436 h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd,
2441 /* Set STT_GNU_IFUNC symbol value. */
2442 h->root.u.def.value = sym->st_value;
2443 h->root.u.def.section = sec;
2448 bfd_boolean warned ATTRIBUTE_UNUSED;
2449 bfd_boolean ignored ATTRIBUTE_UNUSED;
2451 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2452 r_symndx, symtab_hdr, sym_hashes,
2454 unresolved_reloc, warned, ignored);
2458 if (sec != NULL && discarded_section (sec))
2460 _bfd_clear_contents (howto, input_bfd, input_section,
2461 contents + rel->r_offset);
2462 wrel->r_offset = rel->r_offset;
2466 /* For ld -r, remove relocations in debug sections against
2467 sections defined in discarded sections. Not done for
2468 eh_frame editing code expects to be present. */
2469 if (bfd_link_relocatable (info)
2470 && (input_section->flags & SEC_DEBUGGING))
2476 if (bfd_link_relocatable (info))
2483 if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
2485 if (r_type == R_X86_64_64)
2487 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
2488 zero-extend it to 64bit if addend is zero. */
2489 r_type = R_X86_64_32;
2490 memset (contents + rel->r_offset + 4, 0, 4);
2492 else if (r_type == R_X86_64_SIZE64)
2494 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
2495 zero-extend it to 64bit if addend is zero. */
2496 r_type = R_X86_64_SIZE32;
2497 memset (contents + rel->r_offset + 4, 0, 4);
2501 eh = (struct elf_x86_link_hash_entry *) h;
2503 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2504 it here if it is defined in a non-shared object. */
2506 && h->type == STT_GNU_IFUNC
2512 if ((input_section->flags & SEC_ALLOC) == 0)
2514 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2515 sections because such sections are not SEC_ALLOC and
2516 thus ld.so will not process them. */
2517 if ((input_section->flags & SEC_DEBUGGING) != 0)
2527 case R_X86_64_GOTPCREL:
2528 case R_X86_64_GOTPCRELX:
2529 case R_X86_64_REX_GOTPCRELX:
2530 case R_X86_64_GOTPCREL64:
2531 base_got = htab->elf.sgot;
2532 off = h->got.offset;
2534 if (base_got == NULL)
2537 if (off == (bfd_vma) -1)
2539 /* We can't use h->got.offset here to save state, or
2540 even just remember the offset, as finish_dynamic_symbol
2541 would use that as offset into .got. */
2543 if (h->plt.offset == (bfd_vma) -1)
2546 if (htab->elf.splt != NULL)
2548 plt_index = (h->plt.offset / plt_entry_size
2549 - htab->plt.has_plt0);
2550 off = (plt_index + 3) * GOT_ENTRY_SIZE;
2551 base_got = htab->elf.sgotplt;
2555 plt_index = h->plt.offset / plt_entry_size;
2556 off = plt_index * GOT_ENTRY_SIZE;
2557 base_got = htab->elf.igotplt;
2560 if (h->dynindx == -1
2564 /* This references the local defitionion. We must
2565 initialize this entry in the global offset table.
2566 Since the offset must always be a multiple of 8,
2567 we use the least significant bit to record
2568 whether we have initialized it already.
2570 When doing a dynamic link, we create a .rela.got
2571 relocation entry to initialize the value. This
2572 is done in the finish_dynamic_symbol routine. */
2577 bfd_put_64 (output_bfd, relocation,
2578 base_got->contents + off);
2579 /* Note that this is harmless for the GOTPLT64
2580 case, as -1 | 1 still is -1. */
2586 relocation = (base_got->output_section->vma
2587 + base_got->output_offset + off);
2592 if (h->plt.offset == (bfd_vma) -1)
2594 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2595 if (r_type == htab->pointer_r_type
2596 && (input_section->flags & SEC_CODE) == 0)
2597 goto do_ifunc_pointer;
2598 goto bad_ifunc_reloc;
2601 /* STT_GNU_IFUNC symbol must go through PLT. */
2602 if (htab->elf.splt != NULL)
2604 if (htab->plt_second != NULL)
2606 resolved_plt = htab->plt_second;
2607 plt_offset = eh->plt_second.offset;
2611 resolved_plt = htab->elf.splt;
2612 plt_offset = h->plt.offset;
2617 resolved_plt = htab->elf.iplt;
2618 plt_offset = h->plt.offset;
2621 relocation = (resolved_plt->output_section->vma
2622 + resolved_plt->output_offset + plt_offset);
2628 if (h->root.root.string)
2629 name = h->root.root.string;
2631 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2634 /* xgettext:c-format */
2635 (_("%B: relocation %s against STT_GNU_IFUNC "
2636 "symbol `%s' isn't supported"), input_bfd,
2638 bfd_set_error (bfd_error_bad_value);
2642 if (bfd_link_pic (info))
2647 if (ABI_64_P (output_bfd))
2652 if (rel->r_addend != 0)
2654 if (h->root.root.string)
2655 name = h->root.root.string;
2657 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
2660 /* xgettext:c-format */
2661 (_("%B: relocation %s against STT_GNU_IFUNC "
2662 "symbol `%s' has non-zero addend: %Ld"),
2663 input_bfd, howto->name, name, rel->r_addend);
2664 bfd_set_error (bfd_error_bad_value);
2668 /* Generate dynamic relcoation only when there is a
2669 non-GOT reference in a shared object or there is no
2671 if ((bfd_link_pic (info) && h->non_got_ref)
2672 || h->plt.offset == (bfd_vma) -1)
2674 Elf_Internal_Rela outrel;
2677 /* Need a dynamic relocation to get the real function
2679 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2683 if (outrel.r_offset == (bfd_vma) -1
2684 || outrel.r_offset == (bfd_vma) -2)
2687 outrel.r_offset += (input_section->output_section->vma
2688 + input_section->output_offset);
2690 if (h->dynindx == -1
2692 || bfd_link_executable (info))
2694 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
2695 h->root.root.string,
2696 h->root.u.def.section->owner);
2698 /* This symbol is resolved locally. */
2699 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
2700 outrel.r_addend = (h->root.u.def.value
2701 + h->root.u.def.section->output_section->vma
2702 + h->root.u.def.section->output_offset);
2706 outrel.r_info = htab->r_info (h->dynindx, r_type);
2707 outrel.r_addend = 0;
2710 /* Dynamic relocations are stored in
2711 1. .rela.ifunc section in PIC object.
2712 2. .rela.got section in dynamic executable.
2713 3. .rela.iplt section in static executable. */
2714 if (bfd_link_pic (info))
2715 sreloc = htab->elf.irelifunc;
2716 else if (htab->elf.splt != NULL)
2717 sreloc = htab->elf.srelgot;
2719 sreloc = htab->elf.irelplt;
2720 elf_append_rela (output_bfd, sreloc, &outrel);
2722 /* If this reloc is against an external symbol, we
2723 do not want to fiddle with the addend. Otherwise,
2724 we need to include the symbol value so that it
2725 becomes an addend for the dynamic reloc. For an
2726 internal symbol, we have updated addend. */
2731 case R_X86_64_PC32_BND:
2733 case R_X86_64_PLT32:
2734 case R_X86_64_PLT32_BND:
2739 resolved_to_zero = (eh != NULL
2740 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
2742 /* When generating a shared object, the relocations handled here are
2743 copied into the output file to be resolved at run time. */
2746 case R_X86_64_GOT32:
2747 case R_X86_64_GOT64:
2748 /* Relocation is to the entry for this symbol in the global
2750 case R_X86_64_GOTPCREL:
2751 case R_X86_64_GOTPCRELX:
2752 case R_X86_64_REX_GOTPCRELX:
2753 case R_X86_64_GOTPCREL64:
2754 /* Use global offset table entry as symbol value. */
2755 case R_X86_64_GOTPLT64:
2756 /* This is obsolete and treated the same as GOT64. */
2757 base_got = htab->elf.sgot;
2759 if (htab->elf.sgot == NULL)
2762 relative_reloc = FALSE;
2767 off = h->got.offset;
2769 && h->plt.offset != (bfd_vma)-1
2770 && off == (bfd_vma)-1)
2772 /* We can't use h->got.offset here to save
2773 state, or even just remember the offset, as
2774 finish_dynamic_symbol would use that as offset into
2776 bfd_vma plt_index = (h->plt.offset / plt_entry_size
2777 - htab->plt.has_plt0);
2778 off = (plt_index + 3) * GOT_ENTRY_SIZE;
2779 base_got = htab->elf.sgotplt;
2782 dyn = htab->elf.dynamic_sections_created;
2784 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
2785 || (bfd_link_pic (info)
2786 && SYMBOL_REFERENCES_LOCAL_P (info, h))
2787 || (ELF_ST_VISIBILITY (h->other)
2788 && h->root.type == bfd_link_hash_undefweak))
2790 /* This is actually a static link, or it is a -Bsymbolic
2791 link and the symbol is defined locally, or the symbol
2792 was forced to be local because of a version file. We
2793 must initialize this entry in the global offset table.
2794 Since the offset must always be a multiple of 8, we
2795 use the least significant bit to record whether we
2796 have initialized it already.
2798 When doing a dynamic link, we create a .rela.got
2799 relocation entry to initialize the value. This is
2800 done in the finish_dynamic_symbol routine. */
2805 bfd_put_64 (output_bfd, relocation,
2806 base_got->contents + off);
2807 /* Note that this is harmless for the GOTPLT64 case,
2808 as -1 | 1 still is -1. */
2811 if (h->dynindx == -1
2813 && h->root.type != bfd_link_hash_undefweak
2814 && bfd_link_pic (info))
2816 /* If this symbol isn't dynamic in PIC,
2817 generate R_X86_64_RELATIVE here. */
2818 eh->no_finish_dynamic_symbol = 1;
2819 relative_reloc = TRUE;
2824 unresolved_reloc = FALSE;
2828 if (local_got_offsets == NULL)
2831 off = local_got_offsets[r_symndx];
2833 /* The offset must always be a multiple of 8. We use
2834 the least significant bit to record whether we have
2835 already generated the necessary reloc. */
2840 bfd_put_64 (output_bfd, relocation,
2841 base_got->contents + off);
2842 local_got_offsets[r_symndx] |= 1;
2844 if (bfd_link_pic (info))
2845 relative_reloc = TRUE;
2852 Elf_Internal_Rela outrel;
2854 /* We need to generate a R_X86_64_RELATIVE reloc
2855 for the dynamic linker. */
2856 s = htab->elf.srelgot;
2860 outrel.r_offset = (base_got->output_section->vma
2861 + base_got->output_offset
2863 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
2864 outrel.r_addend = relocation;
2865 elf_append_rela (output_bfd, s, &outrel);
2868 if (off >= (bfd_vma) -2)
2871 relocation = base_got->output_section->vma
2872 + base_got->output_offset + off;
2873 if (r_type != R_X86_64_GOTPCREL
2874 && r_type != R_X86_64_GOTPCRELX
2875 && r_type != R_X86_64_REX_GOTPCRELX
2876 && r_type != R_X86_64_GOTPCREL64)
2877 relocation -= htab->elf.sgotplt->output_section->vma
2878 - htab->elf.sgotplt->output_offset;
2882 case R_X86_64_GOTOFF64:
2883 /* Relocation is relative to the start of the global offset
2886 /* Check to make sure it isn't a protected function or data
2887 symbol for shared library since it may not be local when
2888 used as function address or with copy relocation. We also
2889 need to make sure that a symbol is referenced locally. */
2890 if (bfd_link_pic (info) && h)
2892 if (!h->def_regular)
2896 switch (ELF_ST_VISIBILITY (h->other))
2899 v = _("hidden symbol");
2902 v = _("internal symbol");
2905 v = _("protected symbol");
2913 /* xgettext:c-format */
2914 (_("%B: relocation R_X86_64_GOTOFF64 against undefined %s"
2915 " `%s' can not be used when making a shared object"),
2916 input_bfd, v, h->root.root.string);
2917 bfd_set_error (bfd_error_bad_value);
2920 else if (!bfd_link_executable (info)
2921 && !SYMBOL_REFERENCES_LOCAL_P (info, h)
2922 && (h->type == STT_FUNC
2923 || h->type == STT_OBJECT)
2924 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2927 /* xgettext:c-format */
2928 (_("%B: relocation R_X86_64_GOTOFF64 against protected %s"
2929 " `%s' can not be used when making a shared object"),
2931 h->type == STT_FUNC ? "function" : "data",
2932 h->root.root.string);
2933 bfd_set_error (bfd_error_bad_value);
2938 /* Note that sgot is not involved in this
2939 calculation. We always want the start of .got.plt. If we
2940 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
2941 permitted by the ABI, we might have to change this
2943 relocation -= htab->elf.sgotplt->output_section->vma
2944 + htab->elf.sgotplt->output_offset;
2947 case R_X86_64_GOTPC32:
2948 case R_X86_64_GOTPC64:
2949 /* Use global offset table as symbol value. */
2950 relocation = htab->elf.sgotplt->output_section->vma
2951 + htab->elf.sgotplt->output_offset;
2952 unresolved_reloc = FALSE;
2955 case R_X86_64_PLTOFF64:
2956 /* Relocation is PLT entry relative to GOT. For local
2957 symbols it's the symbol itself relative to GOT. */
2959 /* See PLT32 handling. */
2960 && (h->plt.offset != (bfd_vma) -1
2961 || eh->plt_got.offset != (bfd_vma) -1)
2962 && htab->elf.splt != NULL)
2964 if (eh->plt_got.offset != (bfd_vma) -1)
2966 /* Use the GOT PLT. */
2967 resolved_plt = htab->plt_got;
2968 plt_offset = eh->plt_got.offset;
2970 else if (htab->plt_second != NULL)
2972 resolved_plt = htab->plt_second;
2973 plt_offset = eh->plt_second.offset;
2977 resolved_plt = htab->elf.splt;
2978 plt_offset = h->plt.offset;
2981 relocation = (resolved_plt->output_section->vma
2982 + resolved_plt->output_offset
2984 unresolved_reloc = FALSE;
2987 relocation -= htab->elf.sgotplt->output_section->vma
2988 + htab->elf.sgotplt->output_offset;
2991 case R_X86_64_PLT32:
2992 case R_X86_64_PLT32_BND:
2993 /* Relocation is to the entry for this symbol in the
2994 procedure linkage table. */
2996 /* Resolve a PLT32 reloc against a local symbol directly,
2997 without using the procedure linkage table. */
3001 if ((h->plt.offset == (bfd_vma) -1
3002 && eh->plt_got.offset == (bfd_vma) -1)
3003 || htab->elf.splt == NULL)
3005 /* We didn't make a PLT entry for this symbol. This
3006 happens when statically linking PIC code, or when
3007 using -Bsymbolic. */
3011 if (h->plt.offset != (bfd_vma) -1)
3013 if (htab->plt_second != NULL)
3015 resolved_plt = htab->plt_second;
3016 plt_offset = eh->plt_second.offset;
3020 resolved_plt = htab->elf.splt;
3021 plt_offset = h->plt.offset;
3026 /* Use the GOT PLT. */
3027 resolved_plt = htab->plt_got;
3028 plt_offset = eh->plt_got.offset;
3031 relocation = (resolved_plt->output_section->vma
3032 + resolved_plt->output_offset
3034 unresolved_reloc = FALSE;
3037 case R_X86_64_SIZE32:
3038 case R_X86_64_SIZE64:
3039 /* Set to symbol size. */
3040 relocation = st_size;
3046 case R_X86_64_PC32_BND:
3047 /* Don't complain about -fPIC if the symbol is undefined when
3048 building executable unless it is unresolved weak symbol or
3049 -z nocopyreloc is used. */
3050 if ((input_section->flags & SEC_ALLOC) != 0
3051 && (input_section->flags & SEC_READONLY) != 0
3053 && ((bfd_link_executable (info)
3054 && ((h->root.type == bfd_link_hash_undefweak
3055 && !resolved_to_zero)
3056 || ((info->nocopyreloc
3057 || (eh->def_protected
3058 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
3060 && !(h->root.u.def.section->flags & SEC_CODE))))
3061 || bfd_link_dll (info)))
3063 bfd_boolean fail = FALSE;
3065 = ((r_type == R_X86_64_PC32
3066 || r_type == R_X86_64_PC32_BND)
3067 && is_32bit_relative_branch (contents, rel->r_offset));
3069 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
3071 /* Symbol is referenced locally. Make sure it is
3072 defined locally or for a branch. */
3073 fail = (!(h->def_regular || ELF_COMMON_DEF_P (h))
3076 else if (!(bfd_link_pie (info)
3077 && (h->needs_copy || eh->needs_copy)))
3079 /* Symbol doesn't need copy reloc and isn't referenced
3080 locally. We only allow branch to symbol with
3081 non-default visibility. */
3083 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT);
3087 return elf_x86_64_need_pic (info, input_bfd, input_section,
3088 h, NULL, NULL, howto);
3097 /* FIXME: The ABI says the linker should make sure the value is
3098 the same when it's zeroextended to 64 bit. */
3101 if ((input_section->flags & SEC_ALLOC) == 0)
3104 /* Don't copy a pc-relative relocation into the output file
3105 if the symbol needs copy reloc or the symbol is undefined
3106 when building executable. Copy dynamic function pointer
3107 relocations. Don't generate dynamic relocations against
3108 resolved undefined weak symbols in PIE. */
3109 if ((bfd_link_pic (info)
3110 && !(bfd_link_pie (info)
3114 || h->root.type == bfd_link_hash_undefined)
3115 && (X86_PCREL_TYPE_P (r_type)
3116 || r_type == R_X86_64_SIZE32
3117 || r_type == R_X86_64_SIZE64))
3119 || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3120 && !resolved_to_zero)
3121 || h->root.type != bfd_link_hash_undefweak))
3122 && ((! X86_PCREL_TYPE_P (r_type)
3123 && r_type != R_X86_64_SIZE32
3124 && r_type != R_X86_64_SIZE64)
3125 || ! SYMBOL_CALLS_LOCAL (info, h)))
3126 || (ELIMINATE_COPY_RELOCS
3127 && !bfd_link_pic (info)
3131 || eh->func_pointer_refcount > 0
3132 || (h->root.type == bfd_link_hash_undefweak
3133 && !resolved_to_zero))
3134 && ((h->def_dynamic && !h->def_regular)
3135 /* Undefined weak symbol is bound locally when
3137 || h->root.type == bfd_link_hash_undefined)))
3139 Elf_Internal_Rela outrel;
3140 bfd_boolean skip, relocate;
3143 /* When generating a shared object, these relocations
3144 are copied into the output file to be resolved at run
3150 _bfd_elf_section_offset (output_bfd, info, input_section,
3152 if (outrel.r_offset == (bfd_vma) -1)
3154 else if (outrel.r_offset == (bfd_vma) -2)
3155 skip = TRUE, relocate = TRUE;
3157 outrel.r_offset += (input_section->output_section->vma
3158 + input_section->output_offset);
3161 memset (&outrel, 0, sizeof outrel);
3163 /* h->dynindx may be -1 if this symbol was marked to
3167 && (X86_PCREL_TYPE_P (r_type)
3168 || !(bfd_link_executable (info)
3169 || SYMBOLIC_BIND (info, h))
3170 || ! h->def_regular))
3172 outrel.r_info = htab->r_info (h->dynindx, r_type);
3173 outrel.r_addend = rel->r_addend;
3177 /* This symbol is local, or marked to become local.
3178 When relocation overflow check is disabled, we
3179 convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */
3180 if (r_type == htab->pointer_r_type
3181 || (r_type == R_X86_64_32
3182 && info->no_reloc_overflow_check))
3185 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
3186 outrel.r_addend = relocation + rel->r_addend;
3188 else if (r_type == R_X86_64_64
3189 && !ABI_64_P (output_bfd))
3192 outrel.r_info = htab->r_info (0,
3193 R_X86_64_RELATIVE64);
3194 outrel.r_addend = relocation + rel->r_addend;
3195 /* Check addend overflow. */
3196 if ((outrel.r_addend & 0x80000000)
3197 != (rel->r_addend & 0x80000000))
3200 int addend = rel->r_addend;
3201 if (h && h->root.root.string)
3202 name = h->root.root.string;
3204 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
3207 /* xgettext:c-format */
3208 (_("%B: addend %s%#x in relocation %s against "
3209 "symbol `%s' at %#Lx in section `%A' is "
3211 input_bfd, addend < 0 ? "-" : "", addend,
3212 howto->name, name, rel->r_offset, input_section);
3213 bfd_set_error (bfd_error_bad_value);
3221 if (bfd_is_abs_section (sec))
3223 else if (sec == NULL || sec->owner == NULL)
3225 bfd_set_error (bfd_error_bad_value);
3232 /* We are turning this relocation into one
3233 against a section symbol. It would be
3234 proper to subtract the symbol's value,
3235 osec->vma, from the emitted reloc addend,
3236 but ld.so expects buggy relocs. */
3237 osec = sec->output_section;
3238 sindx = elf_section_data (osec)->dynindx;
3241 asection *oi = htab->elf.text_index_section;
3242 sindx = elf_section_data (oi)->dynindx;
3244 BFD_ASSERT (sindx != 0);
3247 outrel.r_info = htab->r_info (sindx, r_type);
3248 outrel.r_addend = relocation + rel->r_addend;
3252 sreloc = elf_section_data (input_section)->sreloc;
3254 if (sreloc == NULL || sreloc->contents == NULL)
3256 r = bfd_reloc_notsupported;
3257 goto check_relocation_error;
3260 elf_append_rela (output_bfd, sreloc, &outrel);
3262 /* If this reloc is against an external symbol, we do
3263 not want to fiddle with the addend. Otherwise, we
3264 need to include the symbol value so that it becomes
3265 an addend for the dynamic reloc. */
3272 case R_X86_64_TLSGD:
3273 case R_X86_64_GOTPC32_TLSDESC:
3274 case R_X86_64_TLSDESC_CALL:
3275 case R_X86_64_GOTTPOFF:
3276 tls_type = GOT_UNKNOWN;
3277 if (h == NULL && local_got_offsets)
3278 tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
3280 tls_type = elf_x86_hash_entry (h)->tls_type;
3282 r_type_tls = r_type;
3283 if (! elf_x86_64_tls_transition (info, input_bfd,
3284 input_section, contents,
3285 symtab_hdr, sym_hashes,
3286 &r_type_tls, tls_type, rel,
3287 relend, h, r_symndx, TRUE))
3290 if (r_type_tls == R_X86_64_TPOFF32)
3292 bfd_vma roff = rel->r_offset;
3294 BFD_ASSERT (! unresolved_reloc);
3296 if (r_type == R_X86_64_TLSGD)
3298 /* GD->LE transition. For 64bit, change
3299 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3300 .word 0x6666; rex64; call __tls_get_addr@PLT
3302 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3304 call *__tls_get_addr@GOTPCREL(%rip)
3305 which may be converted to
3306 addr32 call __tls_get_addr
3309 leaq foo@tpoff(%rax), %rax
3311 leaq foo@tlsgd(%rip), %rdi
3312 .word 0x6666; rex64; call __tls_get_addr@PLT
3314 leaq foo@tlsgd(%rip), %rdi
3316 call *__tls_get_addr@GOTPCREL(%rip)
3317 which may be converted to
3318 addr32 call __tls_get_addr
3321 leaq foo@tpoff(%rax), %rax
3322 For largepic, change:
3323 leaq foo@tlsgd(%rip), %rdi
3324 movabsq $__tls_get_addr@pltoff, %rax
3329 leaq foo@tpoff(%rax), %rax
3330 nopw 0x0(%rax,%rax,1) */
3332 if (ABI_64_P (output_bfd))
3334 if (contents[roff + 5] == 0xb8)
3336 memcpy (contents + roff - 3,
3337 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
3338 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3342 memcpy (contents + roff - 4,
3343 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3347 memcpy (contents + roff - 3,
3348 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3350 bfd_put_32 (output_bfd,
3351 elf_x86_64_tpoff (info, relocation),
3352 contents + roff + 8 + largepic);
3353 /* Skip R_X86_64_PC32, R_X86_64_PLT32,
3354 R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */
3359 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
3361 /* GDesc -> LE transition.
3362 It's originally something like:
3363 leaq x@tlsdesc(%rip), %rax
3366 movl $x@tpoff, %rax. */
3368 unsigned int val, type;
3370 type = bfd_get_8 (input_bfd, contents + roff - 3);
3371 val = bfd_get_8 (input_bfd, contents + roff - 1);
3372 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
3373 contents + roff - 3);
3374 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
3375 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3376 contents + roff - 1);
3377 bfd_put_32 (output_bfd,
3378 elf_x86_64_tpoff (info, relocation),
3382 else if (r_type == R_X86_64_TLSDESC_CALL)
3384 /* GDesc -> LE transition.
3389 bfd_put_8 (output_bfd, 0x66, contents + roff);
3390 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3393 else if (r_type == R_X86_64_GOTTPOFF)
3395 /* IE->LE transition:
3396 For 64bit, originally it can be one of:
3397 movq foo@gottpoff(%rip), %reg
3398 addq foo@gottpoff(%rip), %reg
3401 leaq foo(%reg), %reg
3403 For 32bit, originally it can be one of:
3404 movq foo@gottpoff(%rip), %reg
3405 addl foo@gottpoff(%rip), %reg
3408 leal foo(%reg), %reg
3411 unsigned int val, type, reg;
3414 val = bfd_get_8 (input_bfd, contents + roff - 3);
3417 type = bfd_get_8 (input_bfd, contents + roff - 2);
3418 reg = bfd_get_8 (input_bfd, contents + roff - 1);
3424 bfd_put_8 (output_bfd, 0x49,
3425 contents + roff - 3);
3426 else if (!ABI_64_P (output_bfd) && val == 0x44)
3427 bfd_put_8 (output_bfd, 0x41,
3428 contents + roff - 3);
3429 bfd_put_8 (output_bfd, 0xc7,
3430 contents + roff - 2);
3431 bfd_put_8 (output_bfd, 0xc0 | reg,
3432 contents + roff - 1);
3436 /* addq/addl -> addq/addl - addressing with %rsp/%r12
3439 bfd_put_8 (output_bfd, 0x49,
3440 contents + roff - 3);
3441 else if (!ABI_64_P (output_bfd) && val == 0x44)
3442 bfd_put_8 (output_bfd, 0x41,
3443 contents + roff - 3);
3444 bfd_put_8 (output_bfd, 0x81,
3445 contents + roff - 2);
3446 bfd_put_8 (output_bfd, 0xc0 | reg,
3447 contents + roff - 1);
3451 /* addq/addl -> leaq/leal */
3453 bfd_put_8 (output_bfd, 0x4d,
3454 contents + roff - 3);
3455 else if (!ABI_64_P (output_bfd) && val == 0x44)
3456 bfd_put_8 (output_bfd, 0x45,
3457 contents + roff - 3);
3458 bfd_put_8 (output_bfd, 0x8d,
3459 contents + roff - 2);
3460 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
3461 contents + roff - 1);
3463 bfd_put_32 (output_bfd,
3464 elf_x86_64_tpoff (info, relocation),
3472 if (htab->elf.sgot == NULL)
3477 off = h->got.offset;
3478 offplt = elf_x86_hash_entry (h)->tlsdesc_got;
3482 if (local_got_offsets == NULL)
3485 off = local_got_offsets[r_symndx];
3486 offplt = local_tlsdesc_gotents[r_symndx];
3493 Elf_Internal_Rela outrel;
3497 if (htab->elf.srelgot == NULL)
3500 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3502 if (GOT_TLS_GDESC_P (tls_type))
3504 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
3505 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
3506 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
3507 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3508 + htab->elf.sgotplt->output_offset
3510 + htab->sgotplt_jump_table_size);
3511 sreloc = htab->elf.srelplt;
3513 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
3515 outrel.r_addend = 0;
3516 elf_append_rela (output_bfd, sreloc, &outrel);
3519 sreloc = htab->elf.srelgot;
3521 outrel.r_offset = (htab->elf.sgot->output_section->vma
3522 + htab->elf.sgot->output_offset + off);
3524 if (GOT_TLS_GD_P (tls_type))
3525 dr_type = R_X86_64_DTPMOD64;
3526 else if (GOT_TLS_GDESC_P (tls_type))
3529 dr_type = R_X86_64_TPOFF64;
3531 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
3532 outrel.r_addend = 0;
3533 if ((dr_type == R_X86_64_TPOFF64
3534 || dr_type == R_X86_64_TLSDESC) && indx == 0)
3535 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
3536 outrel.r_info = htab->r_info (indx, dr_type);
3538 elf_append_rela (output_bfd, sreloc, &outrel);
3540 if (GOT_TLS_GD_P (tls_type))
3544 BFD_ASSERT (! unresolved_reloc);
3545 bfd_put_64 (output_bfd,
3546 relocation - _bfd_x86_elf_dtpoff_base (info),
3547 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3551 bfd_put_64 (output_bfd, 0,
3552 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3553 outrel.r_info = htab->r_info (indx,
3555 outrel.r_offset += GOT_ENTRY_SIZE;
3556 elf_append_rela (output_bfd, sreloc,
3565 local_got_offsets[r_symndx] |= 1;
3568 if (off >= (bfd_vma) -2
3569 && ! GOT_TLS_GDESC_P (tls_type))
3571 if (r_type_tls == r_type)
3573 if (r_type == R_X86_64_GOTPC32_TLSDESC
3574 || r_type == R_X86_64_TLSDESC_CALL)
3575 relocation = htab->elf.sgotplt->output_section->vma
3576 + htab->elf.sgotplt->output_offset
3577 + offplt + htab->sgotplt_jump_table_size;
3579 relocation = htab->elf.sgot->output_section->vma
3580 + htab->elf.sgot->output_offset + off;
3581 unresolved_reloc = FALSE;
3585 bfd_vma roff = rel->r_offset;
3587 if (r_type == R_X86_64_TLSGD)
3589 /* GD->IE transition. For 64bit, change
3590 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3591 .word 0x6666; rex64; call __tls_get_addr@PLT
3593 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3595 call *__tls_get_addr@GOTPCREL(%rip
3596 which may be converted to
3597 addr32 call __tls_get_addr
3600 addq foo@gottpoff(%rip), %rax
3602 leaq foo@tlsgd(%rip), %rdi
3603 .word 0x6666; rex64; call __tls_get_addr@PLT
3605 leaq foo@tlsgd(%rip), %rdi
3607 call *__tls_get_addr@GOTPCREL(%rip)
3608 which may be converted to
3609 addr32 call __tls_get_addr
3612 addq foo@gottpoff(%rip), %rax
3613 For largepic, change:
3614 leaq foo@tlsgd(%rip), %rdi
3615 movabsq $__tls_get_addr@pltoff, %rax
3620 addq foo@gottpoff(%rax), %rax
3621 nopw 0x0(%rax,%rax,1) */
3623 if (ABI_64_P (output_bfd))
3625 if (contents[roff + 5] == 0xb8)
3627 memcpy (contents + roff - 3,
3628 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
3629 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3633 memcpy (contents + roff - 4,
3634 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3638 memcpy (contents + roff - 3,
3639 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3642 relocation = (htab->elf.sgot->output_section->vma
3643 + htab->elf.sgot->output_offset + off
3646 - input_section->output_section->vma
3647 - input_section->output_offset
3649 bfd_put_32 (output_bfd, relocation,
3650 contents + roff + 8 + largepic);
3651 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
3656 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
3658 /* GDesc -> IE transition.
3659 It's originally something like:
3660 leaq x@tlsdesc(%rip), %rax
3663 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
3665 /* Now modify the instruction as appropriate. To
3666 turn a leaq into a movq in the form we use it, it
3667 suffices to change the second byte from 0x8d to
3669 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3671 bfd_put_32 (output_bfd,
3672 htab->elf.sgot->output_section->vma
3673 + htab->elf.sgot->output_offset + off
3675 - input_section->output_section->vma
3676 - input_section->output_offset
3681 else if (r_type == R_X86_64_TLSDESC_CALL)
3683 /* GDesc -> IE transition.
3690 bfd_put_8 (output_bfd, 0x66, contents + roff);
3691 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3699 case R_X86_64_TLSLD:
3700 if (! elf_x86_64_tls_transition (info, input_bfd,
3701 input_section, contents,
3702 symtab_hdr, sym_hashes,
3703 &r_type, GOT_UNKNOWN, rel,
3704 relend, h, r_symndx, TRUE))
3707 if (r_type != R_X86_64_TLSLD)
3709 /* LD->LE transition:
3710 leaq foo@tlsld(%rip), %rdi
3711 call __tls_get_addr@PLT
3712 For 64bit, we change it into:
3713 .word 0x6666; .byte 0x66; movq %fs:0, %rax
3714 For 32bit, we change it into:
3715 nopl 0x0(%rax); movl %fs:0, %eax
3717 leaq foo@tlsld(%rip), %rdi;
3718 call *__tls_get_addr@GOTPCREL(%rip)
3719 which may be converted to
3720 addr32 call __tls_get_addr
3721 For 64bit, we change it into:
3722 .word 0x6666; .word 0x6666; movq %fs:0, %rax
3723 For 32bit, we change it into:
3724 nopw 0x0(%rax); movl %fs:0, %eax
3725 For largepic, change:
3726 leaq foo@tlsgd(%rip), %rdi
3727 movabsq $__tls_get_addr@pltoff, %rax
3731 data16 data16 data16 nopw %cs:0x0(%rax,%rax,1)
3734 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
3735 if (ABI_64_P (output_bfd))
3737 if (contents[rel->r_offset + 5] == 0xb8)
3738 memcpy (contents + rel->r_offset - 3,
3739 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
3740 "\x64\x48\x8b\x04\x25\0\0\0", 22);
3741 else if (contents[rel->r_offset + 4] == 0xff
3742 || contents[rel->r_offset + 4] == 0x67)
3743 memcpy (contents + rel->r_offset - 3,
3744 "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0",
3747 memcpy (contents + rel->r_offset - 3,
3748 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
3752 if (contents[rel->r_offset + 4] == 0xff)
3753 memcpy (contents + rel->r_offset - 3,
3754 "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0",
3757 memcpy (contents + rel->r_offset - 3,
3758 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
3760 /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX
3761 and R_X86_64_PLTOFF64. */
3767 if (htab->elf.sgot == NULL)
3770 off = htab->tls_ld_or_ldm_got.offset;
3775 Elf_Internal_Rela outrel;
3777 if (htab->elf.srelgot == NULL)
3780 outrel.r_offset = (htab->elf.sgot->output_section->vma
3781 + htab->elf.sgot->output_offset + off);
3783 bfd_put_64 (output_bfd, 0,
3784 htab->elf.sgot->contents + off);
3785 bfd_put_64 (output_bfd, 0,
3786 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3787 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
3788 outrel.r_addend = 0;
3789 elf_append_rela (output_bfd, htab->elf.srelgot,
3791 htab->tls_ld_or_ldm_got.offset |= 1;
3793 relocation = htab->elf.sgot->output_section->vma
3794 + htab->elf.sgot->output_offset + off;
3795 unresolved_reloc = FALSE;
3798 case R_X86_64_DTPOFF32:
3799 if (!bfd_link_executable (info)
3800 || (input_section->flags & SEC_CODE) == 0)
3801 relocation -= _bfd_x86_elf_dtpoff_base (info);
3803 relocation = elf_x86_64_tpoff (info, relocation);
3806 case R_X86_64_TPOFF32:
3807 case R_X86_64_TPOFF64:
3808 BFD_ASSERT (bfd_link_executable (info));
3809 relocation = elf_x86_64_tpoff (info, relocation);
3812 case R_X86_64_DTPOFF64:
3813 BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
3814 relocation -= _bfd_x86_elf_dtpoff_base (info);
3821 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3822 because such sections are not SEC_ALLOC and thus ld.so will
3823 not process them. */
3824 if (unresolved_reloc
3825 && !((input_section->flags & SEC_DEBUGGING) != 0
3827 && _bfd_elf_section_offset (output_bfd, info, input_section,
3828 rel->r_offset) != (bfd_vma) -1)
3833 sec = h->root.u.def.section;
3834 if ((info->nocopyreloc
3835 || (eh->def_protected
3836 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
3837 && !(h->root.u.def.section->flags & SEC_CODE))
3838 return elf_x86_64_need_pic (info, input_bfd, input_section,
3839 h, NULL, NULL, howto);
3844 /* xgettext:c-format */
3845 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
3850 h->root.root.string);
3856 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3857 contents, rel->r_offset,
3858 relocation, rel->r_addend);
3860 check_relocation_error:
3861 if (r != bfd_reloc_ok)
3866 name = h->root.root.string;
3869 name = bfd_elf_string_from_elf_section (input_bfd,
3870 symtab_hdr->sh_link,
3875 name = bfd_section_name (input_bfd, sec);
3878 if (r == bfd_reloc_overflow)
3880 if (converted_reloc)
3882 info->callbacks->einfo
3883 (_("%F%P: failed to convert GOTPCREL relocation; relink with --no-relax\n"));
3886 (*info->callbacks->reloc_overflow)
3887 (info, (h ? &h->root : NULL), name, howto->name,
3888 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3893 /* xgettext:c-format */
3894 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
3895 input_bfd, input_section,
3896 rel->r_offset, name, (int) r);
3907 Elf_Internal_Shdr *rel_hdr;
3908 size_t deleted = rel - wrel;
3910 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
3911 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3912 if (rel_hdr->sh_size == 0)
3914 /* It is too late to remove an empty reloc section. Leave
3916 ??? What is wrong with an empty section??? */
3917 rel_hdr->sh_size = rel_hdr->sh_entsize;
3920 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
3921 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3922 input_section->reloc_count -= deleted;
3928 /* Finish up dynamic symbol handling. We set the contents of various
3929 dynamic sections here. */
3932 elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
3933 struct bfd_link_info *info,
3934 struct elf_link_hash_entry *h,
3935 Elf_Internal_Sym *sym)
3937 struct elf_x86_link_hash_table *htab;
3938 bfd_boolean use_plt_second;
3939 struct elf_x86_link_hash_entry *eh;
3940 bfd_boolean local_undefweak;
3942 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
3946 /* Use the second PLT section only if there is .plt section. */
3947 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
3949 eh = (struct elf_x86_link_hash_entry *) h;
3950 if (eh->no_finish_dynamic_symbol)
3953 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
3954 resolved undefined weak symbols in executable so that their
3955 references have value 0 at run-time. */
3956 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
3958 if (h->plt.offset != (bfd_vma) -1)
3961 bfd_vma got_offset, plt_offset;
3962 Elf_Internal_Rela rela;
3964 asection *plt, *gotplt, *relplt, *resolved_plt;
3965 const struct elf_backend_data *bed;
3966 bfd_vma plt_got_pcrel_offset;
3968 /* When building a static executable, use .iplt, .igot.plt and
3969 .rela.iplt sections for STT_GNU_IFUNC symbols. */
3970 if (htab->elf.splt != NULL)
3972 plt = htab->elf.splt;
3973 gotplt = htab->elf.sgotplt;
3974 relplt = htab->elf.srelplt;
3978 plt = htab->elf.iplt;
3979 gotplt = htab->elf.igotplt;
3980 relplt = htab->elf.irelplt;
3983 /* This symbol has an entry in the procedure linkage table. Set
3985 if ((h->dynindx == -1
3987 && !((h->forced_local || bfd_link_executable (info))
3989 && h->type == STT_GNU_IFUNC))
3995 /* Get the index in the procedure linkage table which
3996 corresponds to this symbol. This is the index of this symbol
3997 in all the symbols for which we are making plt entries. The
3998 first entry in the procedure linkage table is reserved.
4000 Get the offset into the .got table of the entry that
4001 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
4002 bytes. The first three are reserved for the dynamic linker.
4004 For static executables, we don't reserve anything. */
4006 if (plt == htab->elf.splt)
4008 got_offset = (h->plt.offset / htab->plt.plt_entry_size
4009 - htab->plt.has_plt0);
4010 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
4014 got_offset = h->plt.offset / htab->plt.plt_entry_size;
4015 got_offset = got_offset * GOT_ENTRY_SIZE;
4018 /* Fill in the entry in the procedure linkage table. */
4019 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
4020 htab->plt.plt_entry_size);
4023 memcpy (htab->plt_second->contents + eh->plt_second.offset,
4024 htab->non_lazy_plt->plt_entry,
4025 htab->non_lazy_plt->plt_entry_size);
4027 resolved_plt = htab->plt_second;
4028 plt_offset = eh->plt_second.offset;
4033 plt_offset = h->plt.offset;
4036 /* Insert the relocation positions of the plt section. */
4038 /* Put offset the PC-relative instruction referring to the GOT entry,
4039 subtracting the size of that instruction. */
4040 plt_got_pcrel_offset = (gotplt->output_section->vma
4041 + gotplt->output_offset
4043 - resolved_plt->output_section->vma
4044 - resolved_plt->output_offset
4046 - htab->plt.plt_got_insn_size);
4048 /* Check PC-relative offset overflow in PLT entry. */
4049 if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
4050 /* xgettext:c-format */
4051 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in PLT entry for `%s'\n"),
4052 output_bfd, h->root.root.string);
4054 bfd_put_32 (output_bfd, plt_got_pcrel_offset,
4055 (resolved_plt->contents + plt_offset
4056 + htab->plt.plt_got_offset));
4058 /* Fill in the entry in the global offset table, initially this
4059 points to the second part of the PLT entry. Leave the entry
4060 as zero for undefined weak symbol in PIE. No PLT relocation
4061 against undefined weak symbol in PIE. */
4062 if (!local_undefweak)
4064 if (htab->plt.has_plt0)
4065 bfd_put_64 (output_bfd, (plt->output_section->vma
4066 + plt->output_offset
4068 + htab->lazy_plt->plt_lazy_offset),
4069 gotplt->contents + got_offset);
4071 /* Fill in the entry in the .rela.plt section. */
4072 rela.r_offset = (gotplt->output_section->vma
4073 + gotplt->output_offset
4075 if (h->dynindx == -1
4076 || ((bfd_link_executable (info)
4077 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4079 && h->type == STT_GNU_IFUNC))
4081 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
4082 h->root.root.string,
4083 h->root.u.def.section->owner);
4085 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4086 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
4087 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
4088 rela.r_addend = (h->root.u.def.value
4089 + h->root.u.def.section->output_section->vma
4090 + h->root.u.def.section->output_offset);
4091 /* R_X86_64_IRELATIVE comes last. */
4092 plt_index = htab->next_irelative_index--;
4096 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
4098 plt_index = htab->next_jump_slot_index++;
4101 /* Don't fill the second and third slots in PLT entry for
4102 static executables nor without PLT0. */
4103 if (plt == htab->elf.splt && htab->plt.has_plt0)
4106 = h->plt.offset + htab->lazy_plt->plt_plt_insn_end;
4108 /* Put relocation index. */
4109 bfd_put_32 (output_bfd, plt_index,
4110 (plt->contents + h->plt.offset
4111 + htab->lazy_plt->plt_reloc_offset));
4113 /* Put offset for jmp .PLT0 and check for overflow. We don't
4114 check relocation index for overflow since branch displacement
4115 will overflow first. */
4116 if (plt0_offset > 0x80000000)
4117 /* xgettext:c-format */
4118 info->callbacks->einfo (_("%F%B: branch displacement overflow in PLT entry for `%s'\n"),
4119 output_bfd, h->root.root.string);
4120 bfd_put_32 (output_bfd, - plt0_offset,
4121 (plt->contents + h->plt.offset
4122 + htab->lazy_plt->plt_plt_offset));
4125 bed = get_elf_backend_data (output_bfd);
4126 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
4127 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4130 else if (eh->plt_got.offset != (bfd_vma) -1)
4132 bfd_vma got_offset, plt_offset;
4133 asection *plt, *got;
4134 bfd_boolean got_after_plt;
4135 int32_t got_pcrel_offset;
4137 /* Set the entry in the GOT procedure linkage table. */
4138 plt = htab->plt_got;
4139 got = htab->elf.sgot;
4140 got_offset = h->got.offset;
4142 if (got_offset == (bfd_vma) -1
4143 || (h->type == STT_GNU_IFUNC && h->def_regular)
4148 /* Use the non-lazy PLT entry template for the GOT PLT since they
4149 are the identical. */
4150 /* Fill in the entry in the GOT procedure linkage table. */
4151 plt_offset = eh->plt_got.offset;
4152 memcpy (plt->contents + plt_offset,
4153 htab->non_lazy_plt->plt_entry,
4154 htab->non_lazy_plt->plt_entry_size);
4156 /* Put offset the PC-relative instruction referring to the GOT
4157 entry, subtracting the size of that instruction. */
4158 got_pcrel_offset = (got->output_section->vma
4159 + got->output_offset
4161 - plt->output_section->vma
4162 - plt->output_offset
4164 - htab->non_lazy_plt->plt_got_insn_size);
4166 /* Check PC-relative offset overflow in GOT PLT entry. */
4167 got_after_plt = got->output_section->vma > plt->output_section->vma;
4168 if ((got_after_plt && got_pcrel_offset < 0)
4169 || (!got_after_plt && got_pcrel_offset > 0))
4170 /* xgettext:c-format */
4171 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
4172 output_bfd, h->root.root.string);
4174 bfd_put_32 (output_bfd, got_pcrel_offset,
4175 (plt->contents + plt_offset
4176 + htab->non_lazy_plt->plt_got_offset));
4179 if (!local_undefweak
4181 && (h->plt.offset != (bfd_vma) -1
4182 || eh->plt_got.offset != (bfd_vma) -1))
4184 /* Mark the symbol as undefined, rather than as defined in
4185 the .plt section. Leave the value if there were any
4186 relocations where pointer equality matters (this is a clue
4187 for the dynamic linker, to make function pointer
4188 comparisons work between an application and shared
4189 library), otherwise set it to zero. If a function is only
4190 called from a binary, there is no need to slow down
4191 shared libraries because of that. */
4192 sym->st_shndx = SHN_UNDEF;
4193 if (!h->pointer_equality_needed)
4197 /* Don't generate dynamic GOT relocation against undefined weak
4198 symbol in executable. */
4199 if (h->got.offset != (bfd_vma) -1
4200 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry (h)->tls_type)
4201 && elf_x86_hash_entry (h)->tls_type != GOT_TLS_IE
4202 && !local_undefweak)
4204 Elf_Internal_Rela rela;
4205 asection *relgot = htab->elf.srelgot;
4207 /* This symbol has an entry in the global offset table. Set it
4209 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
4212 rela.r_offset = (htab->elf.sgot->output_section->vma
4213 + htab->elf.sgot->output_offset
4214 + (h->got.offset &~ (bfd_vma) 1));
4216 /* If this is a static link, or it is a -Bsymbolic link and the
4217 symbol is defined locally or was forced to be local because
4218 of a version file, we just want to emit a RELATIVE reloc.
4219 The entry in the global offset table will already have been
4220 initialized in the relocate_section function. */
4222 && h->type == STT_GNU_IFUNC)
4224 if (h->plt.offset == (bfd_vma) -1)
4226 /* STT_GNU_IFUNC is referenced without PLT. */
4227 if (htab->elf.splt == NULL)
4229 /* use .rel[a].iplt section to store .got relocations
4230 in static executable. */
4231 relgot = htab->elf.irelplt;
4233 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
4235 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
4236 h->root.root.string,
4237 h->root.u.def.section->owner);
4239 rela.r_info = htab->r_info (0,
4240 R_X86_64_IRELATIVE);
4241 rela.r_addend = (h->root.u.def.value
4242 + h->root.u.def.section->output_section->vma
4243 + h->root.u.def.section->output_offset);
4248 else if (bfd_link_pic (info))
4250 /* Generate R_X86_64_GLOB_DAT. */
4258 if (!h->pointer_equality_needed)
4261 /* For non-shared object, we can't use .got.plt, which
4262 contains the real function addres if we need pointer
4263 equality. We load the GOT entry with the PLT entry. */
4264 if (htab->plt_second != NULL)
4266 plt = htab->plt_second;
4267 plt_offset = eh->plt_second.offset;
4271 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4272 plt_offset = h->plt.offset;
4274 bfd_put_64 (output_bfd, (plt->output_section->vma
4275 + plt->output_offset
4277 htab->elf.sgot->contents + h->got.offset);
4281 else if (bfd_link_pic (info)
4282 && SYMBOL_REFERENCES_LOCAL_P (info, h))
4284 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
4286 BFD_ASSERT((h->got.offset & 1) != 0);
4287 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
4288 rela.r_addend = (h->root.u.def.value
4289 + h->root.u.def.section->output_section->vma
4290 + h->root.u.def.section->output_offset);
4294 BFD_ASSERT((h->got.offset & 1) == 0);
4296 bfd_put_64 (output_bfd, (bfd_vma) 0,
4297 htab->elf.sgot->contents + h->got.offset);
4298 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
4302 elf_append_rela (output_bfd, relgot, &rela);
4307 Elf_Internal_Rela rela;
4310 /* This symbol needs a copy reloc. Set it up. */
4312 if (h->dynindx == -1
4313 || (h->root.type != bfd_link_hash_defined
4314 && h->root.type != bfd_link_hash_defweak)
4315 || htab->elf.srelbss == NULL
4316 || htab->elf.sreldynrelro == NULL)
4319 rela.r_offset = (h->root.u.def.value
4320 + h->root.u.def.section->output_section->vma
4321 + h->root.u.def.section->output_offset);
4322 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
4324 if (h->root.u.def.section == htab->elf.sdynrelro)
4325 s = htab->elf.sreldynrelro;
4327 s = htab->elf.srelbss;
4328 elf_append_rela (output_bfd, s, &rela);
4334 /* Finish up local dynamic symbol handling. We set the contents of
4335 various dynamic sections here. */
4338 elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
4340 struct elf_link_hash_entry *h
4341 = (struct elf_link_hash_entry *) *slot;
4342 struct bfd_link_info *info
4343 = (struct bfd_link_info *) inf;
4345 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
4349 /* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4350 here since undefined weak symbol may not be dynamic and may not be
4351 called for elf_x86_64_finish_dynamic_symbol. */
4354 elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
4357 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
4358 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4360 if (h->root.type != bfd_link_hash_undefweak
4361 || h->dynindx != -1)
4364 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
4368 /* Used to decide how to sort relocs in an optimal manner for the
4369 dynamic linker, before writing them out. */
4371 static enum elf_reloc_type_class
4372 elf_x86_64_reloc_type_class (const struct bfd_link_info *info,
4373 const asection *rel_sec ATTRIBUTE_UNUSED,
4374 const Elf_Internal_Rela *rela)
4376 bfd *abfd = info->output_bfd;
4377 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
4378 struct elf_x86_link_hash_table *htab
4379 = elf_x86_hash_table (info, X86_64_ELF_DATA);
4381 if (htab->elf.dynsym != NULL
4382 && htab->elf.dynsym->contents != NULL)
4384 /* Check relocation against STT_GNU_IFUNC symbol if there are
4386 unsigned long r_symndx = htab->r_sym (rela->r_info);
4387 if (r_symndx != STN_UNDEF)
4389 Elf_Internal_Sym sym;
4390 if (!bed->s->swap_symbol_in (abfd,
4391 (htab->elf.dynsym->contents
4392 + r_symndx * bed->s->sizeof_sym),
4396 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
4397 return reloc_class_ifunc;
4401 switch ((int) ELF32_R_TYPE (rela->r_info))
4403 case R_X86_64_IRELATIVE:
4404 return reloc_class_ifunc;
4405 case R_X86_64_RELATIVE:
4406 case R_X86_64_RELATIVE64:
4407 return reloc_class_relative;
4408 case R_X86_64_JUMP_SLOT:
4409 return reloc_class_plt;
4411 return reloc_class_copy;
4413 return reloc_class_normal;
4417 /* Finish up the dynamic sections. */
4420 elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
4421 struct bfd_link_info *info)
4423 struct elf_x86_link_hash_table *htab;
4427 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4431 dynobj = htab->elf.dynobj;
4432 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4434 if (htab->elf.dynamic_sections_created)
4436 bfd_byte *dyncon, *dynconend;
4437 const struct elf_backend_data *bed;
4438 bfd_size_type sizeof_dyn;
4440 if (sdyn == NULL || htab->elf.sgot == NULL)
4443 bed = get_elf_backend_data (dynobj);
4444 sizeof_dyn = bed->s->sizeof_dyn;
4445 dyncon = sdyn->contents;
4446 dynconend = sdyn->contents + sdyn->size;
4447 for (; dyncon < dynconend; dyncon += sizeof_dyn)
4449 Elf_Internal_Dyn dyn;
4452 (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn);
4460 s = htab->elf.sgotplt;
4461 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4465 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
4469 s = htab->elf.srelplt->output_section;
4470 dyn.d_un.d_val = s->size;
4473 case DT_TLSDESC_PLT:
4475 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
4476 + htab->tlsdesc_plt;
4479 case DT_TLSDESC_GOT:
4481 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
4482 + htab->tlsdesc_got;
4486 (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon);
4489 if (htab->elf.splt && htab->elf.splt->size > 0)
4491 elf_section_data (htab->elf.splt->output_section)
4492 ->this_hdr.sh_entsize = htab->plt.plt_entry_size;
4494 if (htab->plt.has_plt0)
4496 /* Fill in the special first entry in the procedure linkage
4498 memcpy (htab->elf.splt->contents,
4499 htab->lazy_plt->plt0_entry,
4500 htab->lazy_plt->plt0_entry_size);
4501 /* Add offset for pushq GOT+8(%rip), since the instruction
4502 uses 6 bytes subtract this value. */
4503 bfd_put_32 (output_bfd,
4504 (htab->elf.sgotplt->output_section->vma
4505 + htab->elf.sgotplt->output_offset
4507 - htab->elf.splt->output_section->vma
4508 - htab->elf.splt->output_offset
4510 (htab->elf.splt->contents
4511 + htab->lazy_plt->plt0_got1_offset));
4512 /* Add offset for the PC-relative instruction accessing
4513 GOT+16, subtracting the offset to the end of that
4515 bfd_put_32 (output_bfd,
4516 (htab->elf.sgotplt->output_section->vma
4517 + htab->elf.sgotplt->output_offset
4519 - htab->elf.splt->output_section->vma
4520 - htab->elf.splt->output_offset
4521 - htab->lazy_plt->plt0_got2_insn_end),
4522 (htab->elf.splt->contents
4523 + htab->lazy_plt->plt0_got2_offset));
4525 if (htab->tlsdesc_plt)
4527 bfd_put_64 (output_bfd, (bfd_vma) 0,
4528 htab->elf.sgot->contents + htab->tlsdesc_got);
4530 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
4531 htab->lazy_plt->plt0_entry,
4532 htab->lazy_plt->plt0_entry_size);
4534 /* Add offset for pushq GOT+8(%rip), since the
4535 instruction uses 6 bytes subtract this value. */
4536 bfd_put_32 (output_bfd,
4537 (htab->elf.sgotplt->output_section->vma
4538 + htab->elf.sgotplt->output_offset
4540 - htab->elf.splt->output_section->vma
4541 - htab->elf.splt->output_offset
4544 (htab->elf.splt->contents
4546 + htab->lazy_plt->plt0_got1_offset));
4547 /* Add offset for the PC-relative instruction accessing
4548 GOT+TDG, where TDG stands for htab->tlsdesc_got,
4549 subtracting the offset to the end of that
4551 bfd_put_32 (output_bfd,
4552 (htab->elf.sgot->output_section->vma
4553 + htab->elf.sgot->output_offset
4555 - htab->elf.splt->output_section->vma
4556 - htab->elf.splt->output_offset
4558 - htab->lazy_plt->plt0_got2_insn_end),
4559 (htab->elf.splt->contents
4561 + htab->lazy_plt->plt0_got2_offset));
4566 if (htab->plt_got != NULL && htab->plt_got->size > 0)
4567 elf_section_data (htab->plt_got->output_section)
4568 ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size;
4570 if (htab->plt_second != NULL && htab->plt_second->size > 0)
4571 elf_section_data (htab->plt_second->output_section)
4572 ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size;
4575 /* GOT is always created in setup_gnu_properties. But it may not be
4577 if (htab->elf.sgotplt && htab->elf.sgotplt->size > 0)
4579 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4582 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4586 /* Set the first entry in the global offset table to the address of
4587 the dynamic section. */
4589 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents);
4591 bfd_put_64 (output_bfd,
4592 sdyn->output_section->vma + sdyn->output_offset,
4593 htab->elf.sgotplt->contents);
4594 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
4595 bfd_put_64 (output_bfd, (bfd_vma) 0,
4596 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE);
4597 bfd_put_64 (output_bfd, (bfd_vma) 0,
4598 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2);
4600 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize
4604 /* Adjust .eh_frame for .plt section. */
4605 if (htab->plt_eh_frame != NULL
4606 && htab->plt_eh_frame->contents != NULL)
4608 if (htab->elf.splt != NULL
4609 && htab->elf.splt->size != 0
4610 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
4611 && htab->elf.splt->output_section != NULL
4612 && htab->plt_eh_frame->output_section != NULL)
4614 bfd_vma plt_start = htab->elf.splt->output_section->vma;
4615 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
4616 + htab->plt_eh_frame->output_offset
4617 + PLT_FDE_START_OFFSET;
4618 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4619 htab->plt_eh_frame->contents
4620 + PLT_FDE_START_OFFSET);
4622 if (htab->plt_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
4624 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4626 htab->plt_eh_frame->contents))
4631 /* Adjust .eh_frame for .plt.got section. */
4632 if (htab->plt_got_eh_frame != NULL
4633 && htab->plt_got_eh_frame->contents != NULL)
4635 if (htab->plt_got != NULL
4636 && htab->plt_got->size != 0
4637 && (htab->plt_got->flags & SEC_EXCLUDE) == 0
4638 && htab->plt_got->output_section != NULL
4639 && htab->plt_got_eh_frame->output_section != NULL)
4641 bfd_vma plt_start = htab->plt_got->output_section->vma;
4642 bfd_vma eh_frame_start = htab->plt_got_eh_frame->output_section->vma
4643 + htab->plt_got_eh_frame->output_offset
4644 + PLT_FDE_START_OFFSET;
4645 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4646 htab->plt_got_eh_frame->contents
4647 + PLT_FDE_START_OFFSET);
4649 if (htab->plt_got_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
4651 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4652 htab->plt_got_eh_frame,
4653 htab->plt_got_eh_frame->contents))
4658 /* Adjust .eh_frame for the second PLT section. */
4659 if (htab->plt_second_eh_frame != NULL
4660 && htab->plt_second_eh_frame->contents != NULL)
4662 if (htab->plt_second != NULL
4663 && htab->plt_second->size != 0
4664 && (htab->plt_second->flags & SEC_EXCLUDE) == 0
4665 && htab->plt_second->output_section != NULL
4666 && htab->plt_second_eh_frame->output_section != NULL)
4668 bfd_vma plt_start = htab->plt_second->output_section->vma;
4669 bfd_vma eh_frame_start
4670 = (htab->plt_second_eh_frame->output_section->vma
4671 + htab->plt_second_eh_frame->output_offset
4672 + PLT_FDE_START_OFFSET);
4673 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4674 htab->plt_second_eh_frame->contents
4675 + PLT_FDE_START_OFFSET);
4677 if (htab->plt_second_eh_frame->sec_info_type
4678 == SEC_INFO_TYPE_EH_FRAME)
4680 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4681 htab->plt_second_eh_frame,
4682 htab->plt_second_eh_frame->contents))
4687 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4688 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize
4691 /* Fill PLT entries for undefined weak symbols in PIE. */
4692 if (bfd_link_pie (info))
4693 bfd_hash_traverse (&info->hash->table,
4694 elf_x86_64_pie_finish_undefweak_symbol,
4700 /* Fill PLT/GOT entries and allocate dynamic relocations for local
4701 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4702 It has to be done before elf_link_sort_relocs is called so that
4703 dynamic relocations are properly sorted. */
4706 elf_x86_64_output_arch_local_syms
4707 (bfd *output_bfd ATTRIBUTE_UNUSED,
4708 struct bfd_link_info *info,
4709 void *flaginfo ATTRIBUTE_UNUSED,
4710 int (*func) (void *, const char *,
4713 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
4715 struct elf_x86_link_hash_table *htab
4716 = elf_x86_hash_table (info, X86_64_ELF_DATA);
4720 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4721 htab_traverse (htab->loc_hash_table,
4722 elf_x86_64_finish_local_dynamic_symbol,
4728 /* Forward declaration. */
4729 static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt;
4731 /* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4732 dynamic relocations. */
4735 elf_x86_64_get_synthetic_symtab (bfd *abfd,
4736 long symcount ATTRIBUTE_UNUSED,
4737 asymbol **syms ATTRIBUTE_UNUSED,
4744 bfd_byte *plt_contents;
4746 const struct elf_x86_lazy_plt_layout *lazy_plt;
4747 const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
4748 const struct elf_x86_lazy_plt_layout *lazy_bnd_plt;
4749 const struct elf_x86_non_lazy_plt_layout *non_lazy_bnd_plt;
4750 const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
4751 const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
4753 enum elf_x86_plt_type plt_type;
4754 struct elf_x86_plt plts[] =
4756 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
4757 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
4758 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
4759 { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 },
4760 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
4765 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
4768 if (dynsymcount <= 0)
4771 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
4775 if (get_elf_x86_64_backend_data (abfd)->os == is_normal)
4777 lazy_plt = &elf_x86_64_lazy_plt;
4778 non_lazy_plt = &elf_x86_64_non_lazy_plt;
4779 lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt;
4780 non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt;
4781 if (ABI_64_P (abfd))
4783 lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4784 non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
4788 lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4789 non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
4794 lazy_plt = &elf_x86_64_nacl_plt;
4795 non_lazy_plt = NULL;
4796 lazy_bnd_plt = NULL;
4797 non_lazy_bnd_plt = NULL;
4798 lazy_ibt_plt = NULL;
4799 non_lazy_ibt_plt = NULL;
4803 for (j = 0; plts[j].name != NULL; j++)
4805 plt = bfd_get_section_by_name (abfd, plts[j].name);
4806 if (plt == NULL || plt->size == 0)
4809 /* Get the PLT section contents. */
4810 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
4811 if (plt_contents == NULL)
4813 if (!bfd_get_section_contents (abfd, (asection *) plt,
4814 plt_contents, 0, plt->size))
4816 free (plt_contents);
4820 /* Check what kind of PLT it is. */
4821 plt_type = plt_unknown;
4822 if (plts[j].type == plt_unknown
4823 && (plt->size >= (lazy_plt->plt_entry_size
4824 + lazy_plt->plt_entry_size)))
4826 /* Match lazy PLT first. Need to check the first two
4828 if ((memcmp (plt_contents, lazy_plt->plt0_entry,
4829 lazy_plt->plt0_got1_offset) == 0)
4830 && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6,
4832 plt_type = plt_lazy;
4833 else if (lazy_bnd_plt != NULL
4834 && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry,
4835 lazy_bnd_plt->plt0_got1_offset) == 0)
4836 && (memcmp (plt_contents + 6,
4837 lazy_bnd_plt->plt0_entry + 6, 3) == 0))
4839 plt_type = plt_lazy | plt_second;
4840 /* The fist entry in the lazy IBT PLT is the same as the
4842 if ((memcmp (plt_contents + lazy_ibt_plt->plt_entry_size,
4843 lazy_ibt_plt->plt_entry,
4844 lazy_ibt_plt->plt_got_offset) == 0))
4845 lazy_plt = lazy_ibt_plt;
4847 lazy_plt = lazy_bnd_plt;
4851 if (non_lazy_plt != NULL
4852 && (plt_type == plt_unknown || plt_type == plt_non_lazy)
4853 && plt->size >= non_lazy_plt->plt_entry_size)
4855 /* Match non-lazy PLT. */
4856 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
4857 non_lazy_plt->plt_got_offset) == 0)
4858 plt_type = plt_non_lazy;
4861 if (plt_type == plt_unknown || plt_type == plt_second)
4863 if (non_lazy_bnd_plt != NULL
4864 && plt->size >= non_lazy_bnd_plt->plt_entry_size
4865 && (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry,
4866 non_lazy_bnd_plt->plt_got_offset) == 0))
4868 /* Match BND PLT. */
4869 plt_type = plt_second;
4870 non_lazy_plt = non_lazy_bnd_plt;
4872 else if (non_lazy_ibt_plt != NULL
4873 && plt->size >= non_lazy_ibt_plt->plt_entry_size
4874 && (memcmp (plt_contents,
4875 non_lazy_ibt_plt->plt_entry,
4876 non_lazy_ibt_plt->plt_got_offset) == 0))
4878 /* Match IBT PLT. */
4879 plt_type = plt_second;
4880 non_lazy_plt = non_lazy_ibt_plt;
4884 if (plt_type == plt_unknown)
4886 free (plt_contents);
4891 plts[j].type = plt_type;
4893 if ((plt_type & plt_lazy))
4895 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
4896 plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size;
4897 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
4898 /* Skip PLT0 in lazy PLT. */
4903 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
4904 plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size;
4905 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
4909 /* Skip lazy PLT when the second PLT is used. */
4910 if (plt_type == (plt_lazy | plt_second))
4914 n = plt->size / plts[j].plt_entry_size;
4919 plts[j].contents = plt_contents;
4922 return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
4923 (bfd_vma) 0, plts, dynsyms,
4927 /* Handle an x86-64 specific section when reading an object file. This
4928 is called when elfcode.h finds a section with an unknown type. */
4931 elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
4932 const char *name, int shindex)
4934 if (hdr->sh_type != SHT_X86_64_UNWIND)
4937 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
4943 /* Hook called by the linker routine which adds symbols from an object
4944 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
4948 elf_x86_64_add_symbol_hook (bfd *abfd,
4949 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4950 Elf_Internal_Sym *sym,
4951 const char **namep ATTRIBUTE_UNUSED,
4952 flagword *flagsp ATTRIBUTE_UNUSED,
4958 switch (sym->st_shndx)
4960 case SHN_X86_64_LCOMMON:
4961 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
4964 lcomm = bfd_make_section_with_flags (abfd,
4968 | SEC_LINKER_CREATED));
4971 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
4974 *valp = sym->st_size;
4982 /* Given a BFD section, try to locate the corresponding ELF section
4986 elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4987 asection *sec, int *index_return)
4989 if (sec == &_bfd_elf_large_com_section)
4991 *index_return = SHN_X86_64_LCOMMON;
4997 /* Process a symbol. */
5000 elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
5003 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
5005 switch (elfsym->internal_elf_sym.st_shndx)
5007 case SHN_X86_64_LCOMMON:
5008 asym->section = &_bfd_elf_large_com_section;
5009 asym->value = elfsym->internal_elf_sym.st_size;
5010 /* Common symbol doesn't set BSF_GLOBAL. */
5011 asym->flags &= ~BSF_GLOBAL;
5017 elf_x86_64_common_definition (Elf_Internal_Sym *sym)
5019 return (sym->st_shndx == SHN_COMMON
5020 || sym->st_shndx == SHN_X86_64_LCOMMON);
5024 elf_x86_64_common_section_index (asection *sec)
5026 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
5029 return SHN_X86_64_LCOMMON;
5033 elf_x86_64_common_section (asection *sec)
5035 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
5036 return bfd_com_section_ptr;
5038 return &_bfd_elf_large_com_section;
5042 elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
5043 const Elf_Internal_Sym *sym,
5048 const asection *oldsec)
5050 /* A normal common symbol and a large common symbol result in a
5051 normal common symbol. We turn the large common symbol into a
5054 && h->root.type == bfd_link_hash_common
5056 && bfd_is_com_section (*psec)
5059 if (sym->st_shndx == SHN_COMMON
5060 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
5062 h->root.u.c.p->section
5063 = bfd_make_section_old_way (oldbfd, "COMMON");
5064 h->root.u.c.p->section->flags = SEC_ALLOC;
5066 else if (sym->st_shndx == SHN_X86_64_LCOMMON
5067 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
5068 *psec = bfd_com_section_ptr;
5075 elf_x86_64_additional_program_headers (bfd *abfd,
5076 struct bfd_link_info *info ATTRIBUTE_UNUSED)
5081 /* Check to see if we need a large readonly segment. */
5082 s = bfd_get_section_by_name (abfd, ".lrodata");
5083 if (s && (s->flags & SEC_LOAD))
5086 /* Check to see if we need a large data segment. Since .lbss sections
5087 is placed right after the .bss section, there should be no need for
5088 a large data segment just because of .lbss. */
5089 s = bfd_get_section_by_name (abfd, ".ldata");
5090 if (s && (s->flags & SEC_LOAD))
5096 /* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
5099 elf_x86_64_relocs_compatible (const bfd_target *input,
5100 const bfd_target *output)
5102 return ((xvec_get_elf_backend_data (input)->s->elfclass
5103 == xvec_get_elf_backend_data (output)->s->elfclass)
5104 && _bfd_elf_relocs_compatible (input, output));
5107 /* Set up x86-64 GNU properties. Return the first relocatable ELF input
5108 with GNU properties if found. Otherwise, return NULL. */
5111 elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info)
5113 struct elf_x86_init_table init_table;
5115 if ((int) R_X86_64_standard >= (int) R_X86_64_converted_reloc_bit
5116 || (int) R_X86_64_max <= (int) R_X86_64_converted_reloc_bit
5117 || ((int) (R_X86_64_GNU_VTINHERIT | R_X86_64_converted_reloc_bit)
5118 != (int) R_X86_64_GNU_VTINHERIT)
5119 || ((int) (R_X86_64_GNU_VTENTRY | R_X86_64_converted_reloc_bit)
5120 != (int) R_X86_64_GNU_VTENTRY))
5123 init_table.is_vxworks = FALSE;
5124 if (get_elf_x86_64_backend_data (info->output_bfd)->os == is_normal)
5128 init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt;
5129 init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt;
5133 init_table.lazy_plt = &elf_x86_64_lazy_plt;
5134 init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt;
5137 if (ABI_64_P (info->output_bfd))
5139 init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
5140 init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
5144 init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
5145 init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
5147 init_table.normal_target = TRUE;
5151 init_table.lazy_plt = &elf_x86_64_nacl_plt;
5152 init_table.non_lazy_plt = NULL;
5153 init_table.lazy_ibt_plt = NULL;
5154 init_table.non_lazy_ibt_plt = NULL;
5155 init_table.normal_target = FALSE;
5158 if (ABI_64_P (info->output_bfd))
5160 init_table.r_info = elf64_r_info;
5161 init_table.r_sym = elf64_r_sym;
5165 init_table.r_info = elf32_r_info;
5166 init_table.r_sym = elf32_r_sym;
5169 return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table);
5172 static const struct bfd_elf_special_section
5173 elf_x86_64_special_sections[]=
5175 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5176 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
5177 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
5178 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5179 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5180 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
5181 { NULL, 0, 0, 0, 0 }
5184 #define TARGET_LITTLE_SYM x86_64_elf64_vec
5185 #define TARGET_LITTLE_NAME "elf64-x86-64"
5186 #define ELF_ARCH bfd_arch_i386
5187 #define ELF_TARGET_ID X86_64_ELF_DATA
5188 #define ELF_MACHINE_CODE EM_X86_64
5189 #define ELF_MAXPAGESIZE 0x200000
5190 #define ELF_MINPAGESIZE 0x1000
5191 #define ELF_COMMONPAGESIZE 0x1000
5193 #define elf_backend_can_gc_sections 1
5194 #define elf_backend_can_refcount 1
5195 #define elf_backend_want_got_plt 1
5196 #define elf_backend_plt_readonly 1
5197 #define elf_backend_want_plt_sym 0
5198 #define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
5199 #define elf_backend_rela_normal 1
5200 #define elf_backend_plt_alignment 4
5201 #define elf_backend_extern_protected_data 1
5202 #define elf_backend_caches_rawsize 1
5203 #define elf_backend_dtrel_excludes_plt 1
5204 #define elf_backend_want_dynrelro 1
5206 #define elf_info_to_howto elf_x86_64_info_to_howto
5208 #define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
5209 #define bfd_elf64_bfd_reloc_name_lookup \
5210 elf_x86_64_reloc_name_lookup
5212 #define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
5213 #define elf_backend_check_relocs elf_x86_64_check_relocs
5214 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
5215 #define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
5216 #define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
5217 #define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms
5218 #define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
5219 #define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
5221 #define elf_backend_write_core_note elf_x86_64_write_core_note
5223 #define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
5224 #define elf_backend_relocate_section elf_x86_64_relocate_section
5225 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
5226 #define elf_backend_object_p elf64_x86_64_elf_object_p
5227 #define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
5229 #define elf_backend_section_from_shdr \
5230 elf_x86_64_section_from_shdr
5232 #define elf_backend_section_from_bfd_section \
5233 elf_x86_64_elf_section_from_bfd_section
5234 #define elf_backend_add_symbol_hook \
5235 elf_x86_64_add_symbol_hook
5236 #define elf_backend_symbol_processing \
5237 elf_x86_64_symbol_processing
5238 #define elf_backend_common_section_index \
5239 elf_x86_64_common_section_index
5240 #define elf_backend_common_section \
5241 elf_x86_64_common_section
5242 #define elf_backend_common_definition \
5243 elf_x86_64_common_definition
5244 #define elf_backend_merge_symbol \
5245 elf_x86_64_merge_symbol
5246 #define elf_backend_special_sections \
5247 elf_x86_64_special_sections
5248 #define elf_backend_additional_program_headers \
5249 elf_x86_64_additional_program_headers
5250 #define elf_backend_setup_gnu_properties \
5251 elf_x86_64_link_setup_gnu_properties
5253 #include "elf64-target.h"
5255 /* CloudABI support. */
5257 #undef TARGET_LITTLE_SYM
5258 #define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec
5259 #undef TARGET_LITTLE_NAME
5260 #define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi"
5263 #define ELF_OSABI ELFOSABI_CLOUDABI
5266 #define elf64_bed elf64_x86_64_cloudabi_bed
5268 #include "elf64-target.h"
5270 /* FreeBSD support. */
5272 #undef TARGET_LITTLE_SYM
5273 #define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
5274 #undef TARGET_LITTLE_NAME
5275 #define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
5278 #define ELF_OSABI ELFOSABI_FREEBSD
5281 #define elf64_bed elf64_x86_64_fbsd_bed
5283 #include "elf64-target.h"
5285 /* Solaris 2 support. */
5287 #undef TARGET_LITTLE_SYM
5288 #define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
5289 #undef TARGET_LITTLE_NAME
5290 #define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
5292 /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5293 objects won't be recognized. */
5297 #define elf64_bed elf64_x86_64_sol2_bed
5299 /* The 64-bit static TLS arena size is rounded to the nearest 16-byte
5301 #undef elf_backend_static_tls_alignment
5302 #define elf_backend_static_tls_alignment 16
5304 /* The Solaris 2 ABI requires a plt symbol on all platforms.
5306 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5308 #undef elf_backend_want_plt_sym
5309 #define elf_backend_want_plt_sym 1
5311 #undef elf_backend_strtab_flags
5312 #define elf_backend_strtab_flags SHF_STRINGS
5315 elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
5316 bfd *obfd ATTRIBUTE_UNUSED,
5317 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
5318 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
5320 /* PR 19938: FIXME: Need to add code for setting the sh_info
5321 and sh_link fields of Solaris specific section types. */
5325 #undef elf_backend_copy_special_section_fields
5326 #define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields
5328 #include "elf64-target.h"
5330 /* Native Client support. */
5333 elf64_x86_64_nacl_elf_object_p (bfd *abfd)
5335 /* Set the right machine number for a NaCl x86-64 ELF64 file. */
5336 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
5340 #undef TARGET_LITTLE_SYM
5341 #define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec
5342 #undef TARGET_LITTLE_NAME
5343 #define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
5345 #define elf64_bed elf64_x86_64_nacl_bed
5347 #undef ELF_MAXPAGESIZE
5348 #undef ELF_MINPAGESIZE
5349 #undef ELF_COMMONPAGESIZE
5350 #define ELF_MAXPAGESIZE 0x10000
5351 #define ELF_MINPAGESIZE 0x10000
5352 #define ELF_COMMONPAGESIZE 0x10000
5354 /* Restore defaults. */
5356 #undef elf_backend_static_tls_alignment
5357 #undef elf_backend_want_plt_sym
5358 #define elf_backend_want_plt_sym 0
5359 #undef elf_backend_strtab_flags
5360 #undef elf_backend_copy_special_section_fields
5362 /* NaCl uses substantially different PLT entries for the same effects. */
5364 #undef elf_backend_plt_alignment
5365 #define elf_backend_plt_alignment 5
5366 #define NACL_PLT_ENTRY_SIZE 64
5367 #define NACLMASK 0xe0 /* 32-byte alignment mask. */
5369 static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
5371 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
5372 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
5373 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5374 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5375 0x41, 0xff, 0xe3, /* jmpq *%r11 */
5377 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
5378 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */
5380 /* 32 bytes of nop to pad out to the standard size. */
5381 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
5382 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5383 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
5384 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5385 0x66, /* excess data16 prefix */
5389 static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5391 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
5392 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5393 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5394 0x41, 0xff, 0xe3, /* jmpq *%r11 */
5396 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
5397 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
5398 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5400 /* Lazy GOT entries point here (32-byte aligned). */
5401 0x68, /* pushq immediate */
5402 0, 0, 0, 0, /* replaced with index into relocation table. */
5403 0xe9, /* jmp relative */
5404 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
5406 /* 22 bytes of nop to pad out to the standard size. */
5407 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
5408 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5409 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
5412 /* .eh_frame covering the .plt section. */
5414 static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
5416 #if (PLT_CIE_LENGTH != 20 \
5417 || PLT_FDE_LENGTH != 36 \
5418 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5419 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5420 # error "Need elf_x86_64_backend_data parameters for eh_frame_plt offsets!"
5422 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5423 0, 0, 0, 0, /* CIE ID */
5424 1, /* CIE version */
5425 'z', 'R', 0, /* Augmentation string */
5426 1, /* Code alignment factor */
5427 0x78, /* Data alignment factor */
5428 16, /* Return address column */
5429 1, /* Augmentation size */
5430 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5431 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
5432 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
5433 DW_CFA_nop, DW_CFA_nop,
5435 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5436 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
5437 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
5438 0, 0, 0, 0, /* .plt size goes here */
5439 0, /* Augmentation size */
5440 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
5441 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5442 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
5443 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5444 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5445 13, /* Block length */
5446 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
5447 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
5448 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5449 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
5450 DW_CFA_nop, DW_CFA_nop
5453 static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt =
5455 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
5456 NACL_PLT_ENTRY_SIZE, /* plt0_entry_size */
5457 elf_x86_64_nacl_plt_entry, /* plt_entry */
5458 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5459 2, /* plt0_got1_offset */
5460 9, /* plt0_got2_offset */
5461 13, /* plt0_got2_insn_end */
5462 3, /* plt_got_offset */
5463 33, /* plt_reloc_offset */
5464 38, /* plt_plt_offset */
5465 7, /* plt_got_insn_size */
5466 42, /* plt_plt_insn_end */
5467 32, /* plt_lazy_offset */
5468 elf_x86_64_nacl_plt0_entry, /* pic_plt0_entry */
5469 elf_x86_64_nacl_plt_entry, /* pic_plt_entry */
5470 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
5471 sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */
5474 static const struct elf_x86_64_backend_data elf_x86_64_nacl_arch_bed =
5479 #undef elf_backend_arch_data
5480 #define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
5482 #undef elf_backend_object_p
5483 #define elf_backend_object_p elf64_x86_64_nacl_elf_object_p
5484 #undef elf_backend_modify_segment_map
5485 #define elf_backend_modify_segment_map nacl_modify_segment_map
5486 #undef elf_backend_modify_program_headers
5487 #define elf_backend_modify_program_headers nacl_modify_program_headers
5488 #undef elf_backend_final_write_processing
5489 #define elf_backend_final_write_processing nacl_final_write_processing
5491 #include "elf64-target.h"
5493 /* Native Client x32 support. */
5496 elf32_x86_64_nacl_elf_object_p (bfd *abfd)
5498 /* Set the right machine number for a NaCl x86-64 ELF32 file. */
5499 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
5503 #undef TARGET_LITTLE_SYM
5504 #define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec
5505 #undef TARGET_LITTLE_NAME
5506 #define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
5508 #define elf32_bed elf32_x86_64_nacl_bed
5510 #define bfd_elf32_bfd_reloc_type_lookup \
5511 elf_x86_64_reloc_type_lookup
5512 #define bfd_elf32_bfd_reloc_name_lookup \
5513 elf_x86_64_reloc_name_lookup
5514 #define bfd_elf32_get_synthetic_symtab \
5515 elf_x86_64_get_synthetic_symtab
5517 #undef elf_backend_object_p
5518 #define elf_backend_object_p \
5519 elf32_x86_64_nacl_elf_object_p
5521 #undef elf_backend_bfd_from_remote_memory
5522 #define elf_backend_bfd_from_remote_memory \
5523 _bfd_elf32_bfd_from_remote_memory
5525 #undef elf_backend_size_info
5526 #define elf_backend_size_info \
5527 _bfd_elf32_size_info
5529 #include "elf32-target.h"
5531 /* Restore defaults. */
5532 #undef elf_backend_object_p
5533 #define elf_backend_object_p elf64_x86_64_elf_object_p
5534 #undef elf_backend_bfd_from_remote_memory
5535 #undef elf_backend_size_info
5536 #undef elf_backend_modify_segment_map
5537 #undef elf_backend_modify_program_headers
5538 #undef elf_backend_final_write_processing
5540 /* Intel L1OM support. */
5543 elf64_l1om_elf_object_p (bfd *abfd)
5545 /* Set the right machine number for an L1OM elf64 file. */
5546 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
5550 #undef TARGET_LITTLE_SYM
5551 #define TARGET_LITTLE_SYM l1om_elf64_vec
5552 #undef TARGET_LITTLE_NAME
5553 #define TARGET_LITTLE_NAME "elf64-l1om"
5555 #define ELF_ARCH bfd_arch_l1om
5557 #undef ELF_MACHINE_CODE
5558 #define ELF_MACHINE_CODE EM_L1OM
5563 #define elf64_bed elf64_l1om_bed
5565 #undef elf_backend_object_p
5566 #define elf_backend_object_p elf64_l1om_elf_object_p
5568 /* Restore defaults. */
5569 #undef ELF_MAXPAGESIZE
5570 #undef ELF_MINPAGESIZE
5571 #undef ELF_COMMONPAGESIZE
5572 #define ELF_MAXPAGESIZE 0x200000
5573 #define ELF_MINPAGESIZE 0x1000
5574 #define ELF_COMMONPAGESIZE 0x1000
5575 #undef elf_backend_plt_alignment
5576 #define elf_backend_plt_alignment 4
5577 #undef elf_backend_arch_data
5578 #define elf_backend_arch_data &elf_x86_64_arch_bed
5580 #include "elf64-target.h"
5582 /* FreeBSD L1OM support. */
5584 #undef TARGET_LITTLE_SYM
5585 #define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
5586 #undef TARGET_LITTLE_NAME
5587 #define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
5590 #define ELF_OSABI ELFOSABI_FREEBSD
5593 #define elf64_bed elf64_l1om_fbsd_bed
5595 #include "elf64-target.h"
5597 /* Intel K1OM support. */
5600 elf64_k1om_elf_object_p (bfd *abfd)
5602 /* Set the right machine number for an K1OM elf64 file. */
5603 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
5607 #undef TARGET_LITTLE_SYM
5608 #define TARGET_LITTLE_SYM k1om_elf64_vec
5609 #undef TARGET_LITTLE_NAME
5610 #define TARGET_LITTLE_NAME "elf64-k1om"
5612 #define ELF_ARCH bfd_arch_k1om
5614 #undef ELF_MACHINE_CODE
5615 #define ELF_MACHINE_CODE EM_K1OM
5620 #define elf64_bed elf64_k1om_bed
5622 #undef elf_backend_object_p
5623 #define elf_backend_object_p elf64_k1om_elf_object_p
5625 #undef elf_backend_static_tls_alignment
5627 #undef elf_backend_want_plt_sym
5628 #define elf_backend_want_plt_sym 0
5630 #include "elf64-target.h"
5632 /* FreeBSD K1OM support. */
5634 #undef TARGET_LITTLE_SYM
5635 #define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
5636 #undef TARGET_LITTLE_NAME
5637 #define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
5640 #define ELF_OSABI ELFOSABI_FREEBSD
5643 #define elf64_bed elf64_k1om_fbsd_bed
5645 #include "elf64-target.h"
5647 /* 32bit x86-64 support. */
5649 #undef TARGET_LITTLE_SYM
5650 #define TARGET_LITTLE_SYM x86_64_elf32_vec
5651 #undef TARGET_LITTLE_NAME
5652 #define TARGET_LITTLE_NAME "elf32-x86-64"
5656 #define ELF_ARCH bfd_arch_i386
5658 #undef ELF_MACHINE_CODE
5659 #define ELF_MACHINE_CODE EM_X86_64
5663 #undef elf_backend_object_p
5664 #define elf_backend_object_p \
5665 elf32_x86_64_elf_object_p
5667 #undef elf_backend_bfd_from_remote_memory
5668 #define elf_backend_bfd_from_remote_memory \
5669 _bfd_elf32_bfd_from_remote_memory
5671 #undef elf_backend_size_info
5672 #define elf_backend_size_info \
5673 _bfd_elf32_size_info
5675 #include "elf32-target.h"