1 /* Intel 80386/80486-specific support for 32-bit ELF
2 Copyright (C) 1993-2020 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
21 #include "elfxx-x86.h"
23 #include "elf-vxworks.h"
25 #include "opcode/i386.h"
27 /* 386 uses REL relocations instead of RELA. */
32 static reloc_howto_type elf_howto_table
[]=
34 HOWTO(R_386_NONE
, 0, 3, 0, FALSE
, 0, complain_overflow_dont
,
35 bfd_elf_generic_reloc
, "R_386_NONE",
36 TRUE
, 0x00000000, 0x00000000, FALSE
),
37 HOWTO(R_386_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
38 bfd_elf_generic_reloc
, "R_386_32",
39 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
40 HOWTO(R_386_PC32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
41 bfd_elf_generic_reloc
, "R_386_PC32",
42 TRUE
, 0xffffffff, 0xffffffff, TRUE
),
43 HOWTO(R_386_GOT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
44 bfd_elf_generic_reloc
, "R_386_GOT32",
45 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
46 HOWTO(R_386_PLT32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
47 bfd_elf_generic_reloc
, "R_386_PLT32",
48 TRUE
, 0xffffffff, 0xffffffff, TRUE
),
49 HOWTO(R_386_COPY
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
50 bfd_elf_generic_reloc
, "R_386_COPY",
51 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
52 HOWTO(R_386_GLOB_DAT
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
53 bfd_elf_generic_reloc
, "R_386_GLOB_DAT",
54 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
55 HOWTO(R_386_JUMP_SLOT
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
56 bfd_elf_generic_reloc
, "R_386_JUMP_SLOT",
57 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
58 HOWTO(R_386_RELATIVE
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
59 bfd_elf_generic_reloc
, "R_386_RELATIVE",
60 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
61 HOWTO(R_386_GOTOFF
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
62 bfd_elf_generic_reloc
, "R_386_GOTOFF",
63 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
64 HOWTO(R_386_GOTPC
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
65 bfd_elf_generic_reloc
, "R_386_GOTPC",
66 TRUE
, 0xffffffff, 0xffffffff, TRUE
),
68 /* We have a gap in the reloc numbers here.
69 R_386_standard counts the number up to this point, and
70 R_386_ext_offset is the value to subtract from a reloc type of
71 R_386_16 thru R_386_PC8 to form an index into this table. */
72 #define R_386_standard (R_386_GOTPC + 1)
73 #define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
75 /* These relocs are a GNU extension. */
76 HOWTO(R_386_TLS_TPOFF
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
77 bfd_elf_generic_reloc
, "R_386_TLS_TPOFF",
78 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
79 HOWTO(R_386_TLS_IE
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
80 bfd_elf_generic_reloc
, "R_386_TLS_IE",
81 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
82 HOWTO(R_386_TLS_GOTIE
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
83 bfd_elf_generic_reloc
, "R_386_TLS_GOTIE",
84 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
85 HOWTO(R_386_TLS_LE
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
86 bfd_elf_generic_reloc
, "R_386_TLS_LE",
87 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
88 HOWTO(R_386_TLS_GD
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
89 bfd_elf_generic_reloc
, "R_386_TLS_GD",
90 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
91 HOWTO(R_386_TLS_LDM
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
92 bfd_elf_generic_reloc
, "R_386_TLS_LDM",
93 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
94 HOWTO(R_386_16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
95 bfd_elf_generic_reloc
, "R_386_16",
96 TRUE
, 0xffff, 0xffff, FALSE
),
97 HOWTO(R_386_PC16
, 0, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
98 bfd_elf_generic_reloc
, "R_386_PC16",
99 TRUE
, 0xffff, 0xffff, TRUE
),
100 HOWTO(R_386_8
, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
,
101 bfd_elf_generic_reloc
, "R_386_8",
102 TRUE
, 0xff, 0xff, FALSE
),
103 HOWTO(R_386_PC8
, 0, 0, 8, TRUE
, 0, complain_overflow_signed
,
104 bfd_elf_generic_reloc
, "R_386_PC8",
105 TRUE
, 0xff, 0xff, TRUE
),
107 #define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
108 #define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
109 /* These are common with Solaris TLS implementation. */
110 HOWTO(R_386_TLS_LDO_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
111 bfd_elf_generic_reloc
, "R_386_TLS_LDO_32",
112 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
113 HOWTO(R_386_TLS_IE_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
114 bfd_elf_generic_reloc
, "R_386_TLS_IE_32",
115 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
116 HOWTO(R_386_TLS_LE_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
117 bfd_elf_generic_reloc
, "R_386_TLS_LE_32",
118 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
119 HOWTO(R_386_TLS_DTPMOD32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
120 bfd_elf_generic_reloc
, "R_386_TLS_DTPMOD32",
121 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
122 HOWTO(R_386_TLS_DTPOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
123 bfd_elf_generic_reloc
, "R_386_TLS_DTPOFF32",
124 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
125 HOWTO(R_386_TLS_TPOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
126 bfd_elf_generic_reloc
, "R_386_TLS_TPOFF32",
127 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
128 HOWTO(R_386_SIZE32
, 0, 2, 32, FALSE
, 0, complain_overflow_unsigned
,
129 bfd_elf_generic_reloc
, "R_386_SIZE32",
130 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
131 HOWTO(R_386_TLS_GOTDESC
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
132 bfd_elf_generic_reloc
, "R_386_TLS_GOTDESC",
133 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
134 HOWTO(R_386_TLS_DESC_CALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
135 bfd_elf_generic_reloc
, "R_386_TLS_DESC_CALL",
137 HOWTO(R_386_TLS_DESC
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
138 bfd_elf_generic_reloc
, "R_386_TLS_DESC",
139 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
140 HOWTO(R_386_IRELATIVE
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
141 bfd_elf_generic_reloc
, "R_386_IRELATIVE",
142 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
143 HOWTO(R_386_GOT32X
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
144 bfd_elf_generic_reloc
, "R_386_GOT32X",
145 TRUE
, 0xffffffff, 0xffffffff, FALSE
),
148 #define R_386_ext2 (R_386_GOT32X + 1 - R_386_tls_offset)
149 #define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_ext2)
151 /* GNU extension to record C++ vtable hierarchy. */
152 HOWTO (R_386_GNU_VTINHERIT
, /* type */
154 2, /* size (0 = byte, 1 = short, 2 = long) */
156 FALSE
, /* pc_relative */
158 complain_overflow_dont
, /* complain_on_overflow */
159 NULL
, /* special_function */
160 "R_386_GNU_VTINHERIT", /* name */
161 FALSE
, /* partial_inplace */
164 FALSE
), /* pcrel_offset */
166 /* GNU extension to record C++ vtable member usage. */
167 HOWTO (R_386_GNU_VTENTRY
, /* type */
169 2, /* size (0 = byte, 1 = short, 2 = long) */
171 FALSE
, /* pc_relative */
173 complain_overflow_dont
, /* complain_on_overflow */
174 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
175 "R_386_GNU_VTENTRY", /* name */
176 FALSE
, /* partial_inplace */
179 FALSE
) /* pcrel_offset */
181 #define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
185 #define X86_PCREL_TYPE_P(TYPE) ((TYPE) == R_386_PC32)
187 #define X86_SIZE_TYPE_P(TYPE) ((TYPE) == R_386_SIZE32)
189 #ifdef DEBUG_GEN_RELOC
191 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
196 static reloc_howto_type
*
197 elf_i386_reloc_type_lookup (bfd
*abfd
,
198 bfd_reloc_code_real_type code
)
203 TRACE ("BFD_RELOC_NONE");
204 return &elf_howto_table
[R_386_NONE
];
207 TRACE ("BFD_RELOC_32");
208 return &elf_howto_table
[R_386_32
];
211 TRACE ("BFD_RELOC_CTOR");
212 return &elf_howto_table
[R_386_32
];
214 case BFD_RELOC_32_PCREL
:
215 TRACE ("BFD_RELOC_PC32");
216 return &elf_howto_table
[R_386_PC32
];
218 case BFD_RELOC_386_GOT32
:
219 TRACE ("BFD_RELOC_386_GOT32");
220 return &elf_howto_table
[R_386_GOT32
];
222 case BFD_RELOC_386_PLT32
:
223 TRACE ("BFD_RELOC_386_PLT32");
224 return &elf_howto_table
[R_386_PLT32
];
226 case BFD_RELOC_386_COPY
:
227 TRACE ("BFD_RELOC_386_COPY");
228 return &elf_howto_table
[R_386_COPY
];
230 case BFD_RELOC_386_GLOB_DAT
:
231 TRACE ("BFD_RELOC_386_GLOB_DAT");
232 return &elf_howto_table
[R_386_GLOB_DAT
];
234 case BFD_RELOC_386_JUMP_SLOT
:
235 TRACE ("BFD_RELOC_386_JUMP_SLOT");
236 return &elf_howto_table
[R_386_JUMP_SLOT
];
238 case BFD_RELOC_386_RELATIVE
:
239 TRACE ("BFD_RELOC_386_RELATIVE");
240 return &elf_howto_table
[R_386_RELATIVE
];
242 case BFD_RELOC_386_GOTOFF
:
243 TRACE ("BFD_RELOC_386_GOTOFF");
244 return &elf_howto_table
[R_386_GOTOFF
];
246 case BFD_RELOC_386_GOTPC
:
247 TRACE ("BFD_RELOC_386_GOTPC");
248 return &elf_howto_table
[R_386_GOTPC
];
250 /* These relocs are a GNU extension. */
251 case BFD_RELOC_386_TLS_TPOFF
:
252 TRACE ("BFD_RELOC_386_TLS_TPOFF");
253 return &elf_howto_table
[R_386_TLS_TPOFF
- R_386_ext_offset
];
255 case BFD_RELOC_386_TLS_IE
:
256 TRACE ("BFD_RELOC_386_TLS_IE");
257 return &elf_howto_table
[R_386_TLS_IE
- R_386_ext_offset
];
259 case BFD_RELOC_386_TLS_GOTIE
:
260 TRACE ("BFD_RELOC_386_TLS_GOTIE");
261 return &elf_howto_table
[R_386_TLS_GOTIE
- R_386_ext_offset
];
263 case BFD_RELOC_386_TLS_LE
:
264 TRACE ("BFD_RELOC_386_TLS_LE");
265 return &elf_howto_table
[R_386_TLS_LE
- R_386_ext_offset
];
267 case BFD_RELOC_386_TLS_GD
:
268 TRACE ("BFD_RELOC_386_TLS_GD");
269 return &elf_howto_table
[R_386_TLS_GD
- R_386_ext_offset
];
271 case BFD_RELOC_386_TLS_LDM
:
272 TRACE ("BFD_RELOC_386_TLS_LDM");
273 return &elf_howto_table
[R_386_TLS_LDM
- R_386_ext_offset
];
276 TRACE ("BFD_RELOC_16");
277 return &elf_howto_table
[R_386_16
- R_386_ext_offset
];
279 case BFD_RELOC_16_PCREL
:
280 TRACE ("BFD_RELOC_16_PCREL");
281 return &elf_howto_table
[R_386_PC16
- R_386_ext_offset
];
284 TRACE ("BFD_RELOC_8");
285 return &elf_howto_table
[R_386_8
- R_386_ext_offset
];
287 case BFD_RELOC_8_PCREL
:
288 TRACE ("BFD_RELOC_8_PCREL");
289 return &elf_howto_table
[R_386_PC8
- R_386_ext_offset
];
291 /* Common with Sun TLS implementation. */
292 case BFD_RELOC_386_TLS_LDO_32
:
293 TRACE ("BFD_RELOC_386_TLS_LDO_32");
294 return &elf_howto_table
[R_386_TLS_LDO_32
- R_386_tls_offset
];
296 case BFD_RELOC_386_TLS_IE_32
:
297 TRACE ("BFD_RELOC_386_TLS_IE_32");
298 return &elf_howto_table
[R_386_TLS_IE_32
- R_386_tls_offset
];
300 case BFD_RELOC_386_TLS_LE_32
:
301 TRACE ("BFD_RELOC_386_TLS_LE_32");
302 return &elf_howto_table
[R_386_TLS_LE_32
- R_386_tls_offset
];
304 case BFD_RELOC_386_TLS_DTPMOD32
:
305 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
306 return &elf_howto_table
[R_386_TLS_DTPMOD32
- R_386_tls_offset
];
308 case BFD_RELOC_386_TLS_DTPOFF32
:
309 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
310 return &elf_howto_table
[R_386_TLS_DTPOFF32
- R_386_tls_offset
];
312 case BFD_RELOC_386_TLS_TPOFF32
:
313 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
314 return &elf_howto_table
[R_386_TLS_TPOFF32
- R_386_tls_offset
];
316 case BFD_RELOC_SIZE32
:
317 TRACE ("BFD_RELOC_SIZE32");
318 return &elf_howto_table
[R_386_SIZE32
- R_386_tls_offset
];
320 case BFD_RELOC_386_TLS_GOTDESC
:
321 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
322 return &elf_howto_table
[R_386_TLS_GOTDESC
- R_386_tls_offset
];
324 case BFD_RELOC_386_TLS_DESC_CALL
:
325 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
326 return &elf_howto_table
[R_386_TLS_DESC_CALL
- R_386_tls_offset
];
328 case BFD_RELOC_386_TLS_DESC
:
329 TRACE ("BFD_RELOC_386_TLS_DESC");
330 return &elf_howto_table
[R_386_TLS_DESC
- R_386_tls_offset
];
332 case BFD_RELOC_386_IRELATIVE
:
333 TRACE ("BFD_RELOC_386_IRELATIVE");
334 return &elf_howto_table
[R_386_IRELATIVE
- R_386_tls_offset
];
336 case BFD_RELOC_386_GOT32X
:
337 TRACE ("BFD_RELOC_386_GOT32X");
338 return &elf_howto_table
[R_386_GOT32X
- R_386_tls_offset
];
340 case BFD_RELOC_VTABLE_INHERIT
:
341 TRACE ("BFD_RELOC_VTABLE_INHERIT");
342 return &elf_howto_table
[R_386_GNU_VTINHERIT
- R_386_vt_offset
];
344 case BFD_RELOC_VTABLE_ENTRY
:
345 TRACE ("BFD_RELOC_VTABLE_ENTRY");
346 return &elf_howto_table
[R_386_GNU_VTENTRY
- R_386_vt_offset
];
350 /* xgettext:c-format */
351 _bfd_error_handler (_("%pB: unsupported relocation type: %#x"),
353 bfd_set_error (bfd_error_bad_value
);
358 static reloc_howto_type
*
359 elf_i386_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
364 for (i
= 0; i
< sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]); i
++)
365 if (elf_howto_table
[i
].name
!= NULL
366 && strcasecmp (elf_howto_table
[i
].name
, r_name
) == 0)
367 return &elf_howto_table
[i
];
372 static reloc_howto_type
*
373 elf_i386_rtype_to_howto (unsigned r_type
)
377 if ((indx
= r_type
) >= R_386_standard
378 && ((indx
= r_type
- R_386_ext_offset
) - R_386_standard
379 >= R_386_ext
- R_386_standard
)
380 && ((indx
= r_type
- R_386_tls_offset
) - R_386_ext
381 >= R_386_ext2
- R_386_ext
)
382 && ((indx
= r_type
- R_386_vt_offset
) - R_386_ext2
383 >= R_386_vt
- R_386_ext2
))
385 /* PR 17512: file: 0f67f69d. */
386 if (elf_howto_table
[indx
].type
!= r_type
)
388 return &elf_howto_table
[indx
];
392 elf_i386_info_to_howto_rel (bfd
*abfd
,
394 Elf_Internal_Rela
*dst
)
396 unsigned int r_type
= ELF32_R_TYPE (dst
->r_info
);
398 if ((cache_ptr
->howto
= elf_i386_rtype_to_howto (r_type
)) == NULL
)
400 /* xgettext:c-format */
401 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
403 bfd_set_error (bfd_error_bad_value
);
410 /* Return whether a symbol name implies a local label. The UnixWare
411 2.1 cc generates temporary symbols that start with .X, so we
412 recognize them here. FIXME: do other SVR4 compilers also use .X?.
413 If so, we should move the .X recognition into
414 _bfd_elf_is_local_label_name. */
417 elf_i386_is_local_label_name (bfd
*abfd
, const char *name
)
419 if (name
[0] == '.' && name
[1] == 'X')
422 return _bfd_elf_is_local_label_name (abfd
, name
);
425 /* Support for core dump NOTE sections. */
428 elf_i386_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
433 if (note
->namesz
== 8 && strcmp (note
->namedata
, "FreeBSD") == 0)
435 int pr_version
= bfd_get_32 (abfd
, note
->descdata
);
441 elf_tdata (abfd
)->core
->signal
= bfd_get_32 (abfd
, note
->descdata
+ 20);
444 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
448 size
= bfd_get_32 (abfd
, note
->descdata
+ 8);
452 switch (note
->descsz
)
457 case 144: /* Linux/i386 */
459 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
462 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
472 /* Make a ".reg/999" section. */
473 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
474 size
, note
->descpos
+ offset
);
478 elf_i386_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
480 if (note
->namesz
== 8 && strcmp (note
->namedata
, "FreeBSD") == 0)
482 int pr_version
= bfd_get_32 (abfd
, note
->descdata
);
487 elf_tdata (abfd
)->core
->program
488 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 8, 17);
489 elf_tdata (abfd
)->core
->command
490 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 25, 81);
494 switch (note
->descsz
)
499 case 124: /* Linux/i386 elf_prpsinfo. */
500 elf_tdata (abfd
)->core
->pid
501 = bfd_get_32 (abfd
, note
->descdata
+ 12);
502 elf_tdata (abfd
)->core
->program
503 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
504 elf_tdata (abfd
)->core
->command
505 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
509 /* Note that for some reason, a spurious space is tacked
510 onto the end of the args in some (at least one anyway)
511 implementations, so strip it off if it exists. */
513 char *command
= elf_tdata (abfd
)->core
->command
;
514 int n
= strlen (command
);
516 if (0 < n
&& command
[n
- 1] == ' ')
517 command
[n
- 1] = '\0';
523 /* Functions for the i386 ELF linker.
525 In order to gain some understanding of code in this file without
526 knowing all the intricate details of the linker, note the
529 Functions named elf_i386_* are called by external routines, other
530 functions are only called locally. elf_i386_* functions appear
531 in this file more or less in the order in which they are called
532 from external routines. eg. elf_i386_check_relocs is called
533 early in the link process, elf_i386_finish_dynamic_sections is
534 one of the last functions. */
536 /* The size in bytes of an entry in the lazy procedure linkage table. */
538 #define LAZY_PLT_ENTRY_SIZE 16
540 /* The size in bytes of an entry in the non-lazy procedure linkage
543 #define NON_LAZY_PLT_ENTRY_SIZE 8
545 /* The first entry in an absolute lazy procedure linkage table looks
546 like this. See the SVR4 ABI i386 supplement to see how this works.
547 Will be padded to LAZY_PLT_ENTRY_SIZE with lazy_plt->plt0_pad_byte. */
549 static const bfd_byte elf_i386_lazy_plt0_entry
[12] =
551 0xff, 0x35, /* pushl contents of address */
552 0, 0, 0, 0, /* replaced with address of .got + 4. */
553 0xff, 0x25, /* jmp indirect */
554 0, 0, 0, 0 /* replaced with address of .got + 8. */
557 /* Subsequent entries in an absolute lazy procedure linkage table look
560 static const bfd_byte elf_i386_lazy_plt_entry
[LAZY_PLT_ENTRY_SIZE
] =
562 0xff, 0x25, /* jmp indirect */
563 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
564 0x68, /* pushl immediate */
565 0, 0, 0, 0, /* replaced with offset into relocation table. */
566 0xe9, /* jmp relative */
567 0, 0, 0, 0 /* replaced with offset to start of .plt. */
570 /* The first entry in a PIC lazy procedure linkage table look like
571 this. Will be padded to LAZY_PLT_ENTRY_SIZE with
572 lazy_plt->plt0_pad_byte. */
574 static const bfd_byte elf_i386_pic_lazy_plt0_entry
[12] =
576 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
577 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
580 /* Subsequent entries in a PIC lazy procedure linkage table look like
583 static const bfd_byte elf_i386_pic_lazy_plt_entry
[LAZY_PLT_ENTRY_SIZE
] =
585 0xff, 0xa3, /* jmp *offset(%ebx) */
586 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
587 0x68, /* pushl immediate */
588 0, 0, 0, 0, /* replaced with offset into relocation table. */
589 0xe9, /* jmp relative */
590 0, 0, 0, 0 /* replaced with offset to start of .plt. */
593 /* Entries in the non-lazy procedure linkage table look like this. */
595 static const bfd_byte elf_i386_non_lazy_plt_entry
[NON_LAZY_PLT_ENTRY_SIZE
] =
597 0xff, 0x25, /* jmp indirect */
598 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
599 0x66, 0x90 /* xchg %ax,%ax */
602 /* Entries in the PIC non-lazy procedure linkage table look like
605 static const bfd_byte elf_i386_pic_non_lazy_plt_entry
[NON_LAZY_PLT_ENTRY_SIZE
] =
607 0xff, 0xa3, /* jmp *offset(%ebx) */
608 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
609 0x66, 0x90 /* xchg %ax,%ax */
612 /* The first entry in an absolute IBT-enabled lazy procedure linkage
613 table looks like this. */
615 static const bfd_byte elf_i386_lazy_ibt_plt0_entry
[LAZY_PLT_ENTRY_SIZE
] =
617 0xff, 0x35, 0, 0, 0, 0, /* pushl GOT[1] */
618 0xff, 0x25, 0, 0, 0, 0, /* jmp *GOT[2] */
619 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
622 /* Subsequent entries for an absolute IBT-enabled lazy procedure linkage
623 table look like this. Subsequent entries for a PIC IBT-enabled lazy
624 procedure linkage table are the same. */
626 static const bfd_byte elf_i386_lazy_ibt_plt_entry
[LAZY_PLT_ENTRY_SIZE
] =
628 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
629 0x68, 0, 0, 0, 0, /* pushl immediate */
630 0xe9, 0, 0, 0, 0, /* jmp relative */
631 0x66, 0x90 /* xchg %ax,%ax */
634 /* The first entry in a PIC IBT-enabled lazy procedure linkage table
637 static const bfd_byte elf_i386_pic_lazy_ibt_plt0_entry
[LAZY_PLT_ENTRY_SIZE
] =
639 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
640 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */
641 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
644 /* Entries for branches with IBT-enabled in the absolute non-lazey
645 procedure linkage table look like this. They have the same size
646 as the lazy PLT entry. */
648 static const bfd_byte elf_i386_non_lazy_ibt_plt_entry
[LAZY_PLT_ENTRY_SIZE
] =
650 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
651 0xff, 0x25, 0, 0, 0, 0, /* jmp *name@GOT */
652 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
655 /* Entries for branches with IBT-enabled in the PIC non-lazey procedure
656 linkage table look like this. They have the same size as the lazy
659 static const bfd_byte elf_i386_pic_non_lazy_ibt_plt_entry
[LAZY_PLT_ENTRY_SIZE
] =
661 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
662 0xff, 0xa3, 0, 0, 0, 0, /* jmp *name@GOT(%ebx) */
663 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
666 /* .eh_frame covering the lazy .plt section. */
668 static const bfd_byte elf_i386_eh_frame_lazy_plt
[] =
670 PLT_CIE_LENGTH
, 0, 0, 0, /* CIE length */
671 0, 0, 0, 0, /* CIE ID */
673 'z', 'R', 0, /* Augmentation string */
674 1, /* Code alignment factor */
675 0x7c, /* Data alignment factor */
676 8, /* Return address column */
677 1, /* Augmentation size */
678 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding */
679 DW_CFA_def_cfa
, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
680 DW_CFA_offset
+ 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
681 DW_CFA_nop
, DW_CFA_nop
,
683 PLT_FDE_LENGTH
, 0, 0, 0, /* FDE length */
684 PLT_CIE_LENGTH
+ 8, 0, 0, 0, /* CIE pointer */
685 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
686 0, 0, 0, 0, /* .plt size goes here */
687 0, /* Augmentation size */
688 DW_CFA_def_cfa_offset
, 8, /* DW_CFA_def_cfa_offset: 8 */
689 DW_CFA_advance_loc
+ 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
690 DW_CFA_def_cfa_offset
, 12, /* DW_CFA_def_cfa_offset: 12 */
691 DW_CFA_advance_loc
+ 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
692 DW_CFA_def_cfa_expression
, /* DW_CFA_def_cfa_expression */
693 11, /* Block length */
694 DW_OP_breg4
, 4, /* DW_OP_breg4 (esp): 4 */
695 DW_OP_breg8
, 0, /* DW_OP_breg8 (eip): 0 */
696 DW_OP_lit15
, DW_OP_and
, DW_OP_lit11
, DW_OP_ge
,
697 DW_OP_lit2
, DW_OP_shl
, DW_OP_plus
,
698 DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
701 /* .eh_frame covering the lazy .plt section with IBT-enabled. */
703 static const bfd_byte elf_i386_eh_frame_lazy_ibt_plt
[] =
705 PLT_CIE_LENGTH
, 0, 0, 0, /* CIE length */
706 0, 0, 0, 0, /* CIE ID */
708 'z', 'R', 0, /* Augmentation string */
709 1, /* Code alignment factor */
710 0x7c, /* Data alignment factor */
711 8, /* Return address column */
712 1, /* Augmentation size */
713 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding */
714 DW_CFA_def_cfa
, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
715 DW_CFA_offset
+ 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
716 DW_CFA_nop
, DW_CFA_nop
,
718 PLT_FDE_LENGTH
, 0, 0, 0, /* FDE length */
719 PLT_CIE_LENGTH
+ 8, 0, 0, 0, /* CIE pointer */
720 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
721 0, 0, 0, 0, /* .plt size goes here */
722 0, /* Augmentation size */
723 DW_CFA_def_cfa_offset
, 8, /* DW_CFA_def_cfa_offset: 8 */
724 DW_CFA_advance_loc
+ 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
725 DW_CFA_def_cfa_offset
, 12, /* DW_CFA_def_cfa_offset: 12 */
726 DW_CFA_advance_loc
+ 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
727 DW_CFA_def_cfa_expression
, /* DW_CFA_def_cfa_expression */
728 11, /* Block length */
729 DW_OP_breg4
, 4, /* DW_OP_breg4 (esp): 4 */
730 DW_OP_breg8
, 0, /* DW_OP_breg8 (eip): 0 */
731 DW_OP_lit15
, DW_OP_and
, DW_OP_lit9
, DW_OP_ge
,
732 DW_OP_lit2
, DW_OP_shl
, DW_OP_plus
,
733 DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
736 /* .eh_frame covering the non-lazy .plt section. */
738 static const bfd_byte elf_i386_eh_frame_non_lazy_plt
[] =
740 #define PLT_GOT_FDE_LENGTH 16
741 PLT_CIE_LENGTH
, 0, 0, 0, /* CIE length */
742 0, 0, 0, 0, /* CIE ID */
744 'z', 'R', 0, /* Augmentation string */
745 1, /* Code alignment factor */
746 0x7c, /* Data alignment factor */
747 8, /* Return address column */
748 1, /* Augmentation size */
749 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding */
750 DW_CFA_def_cfa
, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
751 DW_CFA_offset
+ 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
752 DW_CFA_nop
, DW_CFA_nop
,
754 PLT_GOT_FDE_LENGTH
, 0, 0, 0, /* FDE length */
755 PLT_CIE_LENGTH
+ 8, 0, 0, 0, /* CIE pointer */
756 0, 0, 0, 0, /* the start of non-lazy .plt goes here */
757 0, 0, 0, 0, /* non-lazy .plt size goes here */
758 0, /* Augmentation size */
759 DW_CFA_nop
, DW_CFA_nop
, DW_CFA_nop
762 /* These are the standard parameters. */
763 static const struct elf_x86_lazy_plt_layout elf_i386_lazy_plt
=
765 elf_i386_lazy_plt0_entry
, /* plt0_entry */
766 sizeof (elf_i386_lazy_plt0_entry
), /* plt0_entry_size */
767 elf_i386_lazy_plt_entry
, /* plt_entry */
768 LAZY_PLT_ENTRY_SIZE
, /* plt_entry_size */
769 NULL
, /* plt_tlsdesc_entry */
770 0, /* plt_tlsdesc_entry_size*/
771 0, /* plt_tlsdesc_got1_offset */
772 0, /* plt_tlsdesc_got2_offset */
773 0, /* plt_tlsdesc_got1_insn_end */
774 0, /* plt_tlsdesc_got2_insn_end */
775 2, /* plt0_got1_offset */
776 8, /* plt0_got2_offset */
777 0, /* plt0_got2_insn_end */
778 2, /* plt_got_offset */
779 7, /* plt_reloc_offset */
780 12, /* plt_plt_offset */
781 0, /* plt_got_insn_size */
782 0, /* plt_plt_insn_end */
783 6, /* plt_lazy_offset */
784 elf_i386_pic_lazy_plt0_entry
, /* pic_plt0_entry */
785 elf_i386_pic_lazy_plt_entry
, /* pic_plt_entry */
786 elf_i386_eh_frame_lazy_plt
, /* eh_frame_plt */
787 sizeof (elf_i386_eh_frame_lazy_plt
) /* eh_frame_plt_size */
790 static const struct elf_x86_non_lazy_plt_layout elf_i386_non_lazy_plt
=
792 elf_i386_non_lazy_plt_entry
, /* plt_entry */
793 elf_i386_pic_non_lazy_plt_entry
, /* pic_plt_entry */
794 NON_LAZY_PLT_ENTRY_SIZE
, /* plt_entry_size */
795 2, /* plt_got_offset */
796 0, /* plt_got_insn_size */
797 elf_i386_eh_frame_non_lazy_plt
, /* eh_frame_plt */
798 sizeof (elf_i386_eh_frame_non_lazy_plt
) /* eh_frame_plt_size */
801 static const struct elf_x86_lazy_plt_layout elf_i386_lazy_ibt_plt
=
803 elf_i386_lazy_ibt_plt0_entry
, /* plt0_entry */
804 sizeof (elf_i386_lazy_ibt_plt0_entry
), /* plt0_entry_size */
805 elf_i386_lazy_ibt_plt_entry
, /* plt_entry */
806 LAZY_PLT_ENTRY_SIZE
, /* plt_entry_size */
807 NULL
, /* plt_tlsdesc_entry */
808 0, /* plt_tlsdesc_entry_size*/
809 0, /* plt_tlsdesc_got1_offset */
810 0, /* plt_tlsdesc_got2_offset */
811 0, /* plt_tlsdesc_got1_insn_end */
812 0, /* plt_tlsdesc_got2_insn_end */
813 2, /* plt0_got1_offset */
814 8, /* plt0_got2_offset */
815 0, /* plt0_got2_insn_end */
816 4+2, /* plt_got_offset */
817 4+1, /* plt_reloc_offset */
818 4+6, /* plt_plt_offset */
819 0, /* plt_got_insn_size */
820 0, /* plt_plt_insn_end */
821 0, /* plt_lazy_offset */
822 elf_i386_pic_lazy_ibt_plt0_entry
, /* pic_plt0_entry */
823 elf_i386_lazy_ibt_plt_entry
, /* pic_plt_entry */
824 elf_i386_eh_frame_lazy_ibt_plt
, /* eh_frame_plt */
825 sizeof (elf_i386_eh_frame_lazy_ibt_plt
) /* eh_frame_plt_size */
828 static const struct elf_x86_non_lazy_plt_layout elf_i386_non_lazy_ibt_plt
=
830 elf_i386_non_lazy_ibt_plt_entry
, /* plt_entry */
831 elf_i386_pic_non_lazy_ibt_plt_entry
,/* pic_plt_entry */
832 LAZY_PLT_ENTRY_SIZE
, /* plt_entry_size */
833 4+2, /* plt_got_offset */
834 0, /* plt_got_insn_size */
835 elf_i386_eh_frame_non_lazy_plt
, /* eh_frame_plt */
836 sizeof (elf_i386_eh_frame_non_lazy_plt
) /* eh_frame_plt_size */
840 /* On VxWorks, the .rel.plt.unloaded section has absolute relocations
841 for the PLTResolve stub and then for each PLT entry. */
842 #define PLTRESOLVE_RELOCS_SHLIB 0
843 #define PLTRESOLVE_RELOCS 2
844 #define PLT_NON_JUMP_SLOT_RELOCS 2
846 /* Return TRUE if the TLS access code sequence support transition
850 elf_i386_check_tls_transition (asection
*sec
,
852 Elf_Internal_Shdr
*symtab_hdr
,
853 struct elf_link_hash_entry
**sym_hashes
,
855 const Elf_Internal_Rela
*rel
,
856 const Elf_Internal_Rela
*relend
)
858 unsigned int val
, type
, reg
;
859 unsigned long r_symndx
;
860 struct elf_link_hash_entry
*h
;
863 bfd_boolean indirect_call
;
865 offset
= rel
->r_offset
;
870 if (offset
< 2 || (rel
+ 1) >= relend
)
873 indirect_call
= FALSE
;
874 call
= contents
+ offset
+ 4;
877 if (r_type
== R_386_TLS_GD
)
879 /* Check transition from GD access model. Only
880 leal foo@tlsgd(,%ebx,1), %eax
881 call ___tls_get_addr@PLT
883 leal foo@tlsgd(%ebx) %eax
884 call ___tls_get_addr@PLT
887 leal foo@tlsgd(%reg), %eax
888 call *___tls_get_addr@GOT(%reg)
889 which may be converted to
890 addr32 call ___tls_get_addr
891 can transit to different access model. */
892 if ((offset
+ 10) > sec
->size
893 || (type
!= 0x8d && type
!= 0x04))
898 /* leal foo@tlsgd(,%ebx,1), %eax
899 call ___tls_get_addr@PLT */
903 if (*(call
- 7) != 0x8d
911 leal foo@tlsgd(%ebx), %eax
912 call ___tls_get_addr@PLT
915 leal foo@tlsgd(%reg), %eax
916 call *___tls_get_addr@GOT(%reg)
917 which may be converted to
918 addr32 call ___tls_get_addr
920 %eax can't be used as the GOT base register since it
921 is used to pass parameter to ___tls_get_addr. */
923 if ((val
& 0xf8) != 0x80 || reg
== 4 || reg
== 0)
926 indirect_call
= call
[0] == 0xff;
927 if (!(reg
== 3 && call
[0] == 0xe8 && call
[5] == 0x90)
928 && !(call
[0] == 0x67 && call
[1] == 0xe8)
930 && (call
[1] & 0xf8) == 0x90
931 && (call
[1] & 0x7) == reg
))
937 /* Check transition from LD access model. Only
938 leal foo@tlsldm(%ebx), %eax
939 call ___tls_get_addr@PLT
941 leal foo@tlsldm(%reg), %eax
942 call *___tls_get_addr@GOT(%reg)
943 which may be converted to
944 addr32 call ___tls_get_addr
945 can transit to different access model. */
946 if (type
!= 0x8d || (offset
+ 9) > sec
->size
)
949 /* %eax can't be used as the GOT base register since it is
950 used to pass parameter to ___tls_get_addr. */
952 if ((val
& 0xf8) != 0x80 || reg
== 4 || reg
== 0)
955 indirect_call
= call
[0] == 0xff;
956 if (!(reg
== 3 && call
[0] == 0xe8)
957 && !(call
[0] == 0x67 && call
[1] == 0xe8)
959 && (call
[1] & 0xf8) == 0x90
960 && (call
[1] & 0x7) == reg
))
964 r_symndx
= ELF32_R_SYM (rel
[1].r_info
);
965 if (r_symndx
< symtab_hdr
->sh_info
)
968 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
970 || !((struct elf_x86_link_hash_entry
*) h
)->tls_get_addr
)
972 else if (indirect_call
)
973 return (ELF32_R_TYPE (rel
[1].r_info
) == R_386_GOT32X
);
975 return (ELF32_R_TYPE (rel
[1].r_info
) == R_386_PC32
976 || ELF32_R_TYPE (rel
[1].r_info
) == R_386_PLT32
);
979 /* Check transition from IE access model:
980 movl foo@indntpoff(%rip), %eax
981 movl foo@indntpoff(%rip), %reg
982 addl foo@indntpoff(%rip), %reg
985 if (offset
< 1 || (offset
+ 4) > sec
->size
)
988 /* Check "movl foo@tpoff(%rip), %eax" first. */
989 val
= bfd_get_8 (abfd
, contents
+ offset
- 1);
996 /* Check movl|addl foo@tpoff(%rip), %reg. */
997 type
= bfd_get_8 (abfd
, contents
+ offset
- 2);
998 return ((type
== 0x8b || type
== 0x03)
999 && (val
& 0xc7) == 0x05);
1001 case R_386_TLS_GOTIE
:
1002 case R_386_TLS_IE_32
:
1003 /* Check transition from {IE_32,GOTIE} access model:
1004 subl foo@{tpoff,gontoff}(%reg1), %reg2
1005 movl foo@{tpoff,gontoff}(%reg1), %reg2
1006 addl foo@{tpoff,gontoff}(%reg1), %reg2
1009 if (offset
< 2 || (offset
+ 4) > sec
->size
)
1012 val
= bfd_get_8 (abfd
, contents
+ offset
- 1);
1013 if ((val
& 0xc0) != 0x80 || (val
& 7) == 4)
1016 type
= bfd_get_8 (abfd
, contents
+ offset
- 2);
1017 return type
== 0x8b || type
== 0x2b || type
== 0x03;
1019 case R_386_TLS_GOTDESC
:
1020 /* Check transition from GDesc access model:
1021 leal x@tlsdesc(%ebx), %eax
1023 Make sure it's a leal adding ebx to a 32-bit offset
1024 into any register, although it's probably almost always
1027 if (offset
< 2 || (offset
+ 4) > sec
->size
)
1030 if (bfd_get_8 (abfd
, contents
+ offset
- 2) != 0x8d)
1033 val
= bfd_get_8 (abfd
, contents
+ offset
- 1);
1034 return (val
& 0xc7) == 0x83;
1036 case R_386_TLS_DESC_CALL
:
1037 /* Check transition from GDesc access model:
1038 call *x@tlsdesc(%eax)
1040 if (offset
+ 2 <= sec
->size
)
1042 /* Make sure that it's a call *x@tlsdesc(%eax). */
1043 call
= contents
+ offset
;
1044 return call
[0] == 0xff && call
[1] == 0x10;
1054 /* Return TRUE if the TLS access transition is OK or no transition
1055 will be performed. Update R_TYPE if there is a transition. */
1058 elf_i386_tls_transition (struct bfd_link_info
*info
, bfd
*abfd
,
1059 asection
*sec
, bfd_byte
*contents
,
1060 Elf_Internal_Shdr
*symtab_hdr
,
1061 struct elf_link_hash_entry
**sym_hashes
,
1062 unsigned int *r_type
, int tls_type
,
1063 const Elf_Internal_Rela
*rel
,
1064 const Elf_Internal_Rela
*relend
,
1065 struct elf_link_hash_entry
*h
,
1066 unsigned long r_symndx
,
1067 bfd_boolean from_relocate_section
)
1069 unsigned int from_type
= *r_type
;
1070 unsigned int to_type
= from_type
;
1071 bfd_boolean check
= TRUE
;
1073 /* Skip TLS transition for functions. */
1075 && (h
->type
== STT_FUNC
1076 || h
->type
== STT_GNU_IFUNC
))
1082 case R_386_TLS_GOTDESC
:
1083 case R_386_TLS_DESC_CALL
:
1084 case R_386_TLS_IE_32
:
1086 case R_386_TLS_GOTIE
:
1087 if (bfd_link_executable (info
))
1090 to_type
= R_386_TLS_LE_32
;
1091 else if (from_type
!= R_386_TLS_IE
1092 && from_type
!= R_386_TLS_GOTIE
)
1093 to_type
= R_386_TLS_IE_32
;
1096 /* When we are called from elf_i386_relocate_section, there may
1097 be additional transitions based on TLS_TYPE. */
1098 if (from_relocate_section
)
1100 unsigned int new_to_type
= to_type
;
1102 if (TLS_TRANSITION_IE_TO_LE_P (info
, h
, tls_type
))
1103 new_to_type
= R_386_TLS_LE_32
;
1105 if (to_type
== R_386_TLS_GD
1106 || to_type
== R_386_TLS_GOTDESC
1107 || to_type
== R_386_TLS_DESC_CALL
)
1109 if (tls_type
== GOT_TLS_IE_POS
)
1110 new_to_type
= R_386_TLS_GOTIE
;
1111 else if (tls_type
& GOT_TLS_IE
)
1112 new_to_type
= R_386_TLS_IE_32
;
1115 /* We checked the transition before when we were called from
1116 elf_i386_check_relocs. We only want to check the new
1117 transition which hasn't been checked before. */
1118 check
= new_to_type
!= to_type
&& from_type
== to_type
;
1119 to_type
= new_to_type
;
1125 if (bfd_link_executable (info
))
1126 to_type
= R_386_TLS_LE_32
;
1133 /* Return TRUE if there is no transition. */
1134 if (from_type
== to_type
)
1137 /* Check if the transition can be performed. */
1139 && ! elf_i386_check_tls_transition (sec
, contents
,
1140 symtab_hdr
, sym_hashes
,
1141 from_type
, rel
, relend
))
1143 reloc_howto_type
*from
, *to
;
1146 from
= elf_i386_rtype_to_howto (from_type
);
1147 to
= elf_i386_rtype_to_howto (to_type
);
1150 name
= h
->root
.root
.string
;
1153 struct elf_x86_link_hash_table
*htab
;
1155 htab
= elf_x86_hash_table (info
, I386_ELF_DATA
);
1160 Elf_Internal_Sym
*isym
;
1162 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
1164 name
= bfd_elf_sym_name (abfd
, symtab_hdr
, isym
, NULL
);
1169 /* xgettext:c-format */
1170 (_("%pB: TLS transition from %s to %s against `%s'"
1171 " at %#" PRIx64
" in section `%pA' failed"),
1172 abfd
, from
->name
, to
->name
, name
,
1173 (uint64_t) rel
->r_offset
, sec
);
1174 bfd_set_error (bfd_error_bad_value
);
1182 /* With the local symbol, foo, we convert
1183 mov foo@GOT[(%reg1)], %reg2
1185 lea foo[@GOTOFF(%reg1)], %reg2
1187 call/jmp *foo@GOT[(%reg)]
1189 nop call foo/jmp foo nop
1190 When PIC is false, convert
1191 test %reg1, foo@GOT[(%reg2)]
1195 binop foo@GOT[(%reg1)], %reg2
1198 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1203 elf_i386_convert_load_reloc (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
1205 unsigned int *r_type_p
,
1206 Elf_Internal_Rela
*irel
,
1207 struct elf_link_hash_entry
*h
,
1208 bfd_boolean
*converted
,
1209 struct bfd_link_info
*link_info
)
1211 struct elf_x86_link_hash_table
*htab
;
1212 unsigned int opcode
;
1214 bfd_boolean baseless
;
1215 Elf_Internal_Sym
*isym
;
1216 unsigned int addend
;
1220 bfd_boolean to_reloc_32
;
1221 bfd_boolean abs_symbol
;
1222 unsigned int r_type
;
1223 unsigned int r_symndx
;
1224 bfd_vma roff
= irel
->r_offset
;
1225 bfd_boolean local_ref
;
1226 struct elf_x86_link_hash_entry
*eh
;
1231 /* Addend for R_386_GOT32X relocations must be 0. */
1232 addend
= bfd_get_32 (abfd
, contents
+ roff
);
1236 htab
= elf_x86_hash_table (link_info
, I386_ELF_DATA
);
1237 is_pic
= bfd_link_pic (link_info
);
1240 r_symndx
= ELF32_R_SYM (irel
->r_info
);
1242 modrm
= bfd_get_8 (abfd
, contents
+ roff
- 1);
1243 baseless
= (modrm
& 0xc7) == 0x5;
1247 /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P. */
1248 local_ref
= SYMBOL_REFERENCES_LOCAL_P (link_info
, h
);
1250 abs_symbol
= ABS_SYMBOL_P (h
);
1255 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
, abfd
,
1257 abs_symbol
= isym
->st_shndx
== SHN_ABS
;
1260 if (baseless
&& is_pic
)
1262 /* For PIC, disallow R_386_GOT32X without a base register
1263 since we don't know what the GOT base is. */
1267 name
= bfd_elf_sym_name (abfd
, symtab_hdr
, isym
, NULL
);
1269 name
= h
->root
.root
.string
;
1272 /* xgettext:c-format */
1273 (_("%pB: direct GOT relocation R_386_GOT32X against `%s' without base"
1274 " register can not be used when making a shared object"),
1279 opcode
= bfd_get_8 (abfd
, contents
+ roff
- 2);
1281 /* Convert to R_386_32 if PIC is false or there is no base
1283 to_reloc_32
= !is_pic
|| baseless
;
1285 eh
= elf_x86_hash_entry (h
);
1287 /* Try to convert R_386_GOT32X. Get the symbol referred to by the
1291 if (opcode
== 0x0ff)
1292 /* Convert "call/jmp *foo@GOT[(%reg)]". */
1293 goto convert_branch
;
1295 /* Convert "mov foo@GOT[(%reg1)], %reg2",
1296 "test %reg1, foo@GOT(%reg2)" and
1297 "binop foo@GOT[(%reg1)], %reg2". */
1301 /* Undefined weak symbol is only bound locally in executable
1302 and its reference is resolved as 0. */
1303 if (h
->root
.type
== bfd_link_hash_undefweak
1309 /* No direct branch to 0 for PIC. */
1313 goto convert_branch
;
1317 /* We can convert load of address 0 to R_386_32. */
1325 /* We have "call/jmp *foo@GOT[(%reg)]". */
1326 if ((h
->root
.type
== bfd_link_hash_defined
1327 || h
->root
.type
== bfd_link_hash_defweak
)
1330 /* The function is locally defined. */
1332 /* Convert R_386_GOT32X to R_386_PC32. */
1333 if (modrm
== 0x15 || (modrm
& 0xf8) == 0x90)
1335 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1338 /* To support TLS optimization, always use addr32 prefix
1339 for "call *___tls_get_addr@GOT(%reg)". */
1340 if (eh
&& eh
->tls_get_addr
)
1343 nop_offset
= irel
->r_offset
- 2;
1347 nop
= htab
->params
->call_nop_byte
;
1348 if (htab
->params
->call_nop_as_suffix
)
1350 nop_offset
= roff
+ 3;
1351 irel
->r_offset
-= 1;
1354 nop_offset
= roff
- 2;
1359 /* Convert to "jmp foo nop". */
1362 nop_offset
= roff
+ 3;
1363 irel
->r_offset
-= 1;
1366 bfd_put_8 (abfd
, nop
, contents
+ nop_offset
);
1367 bfd_put_8 (abfd
, modrm
, contents
+ irel
->r_offset
- 1);
1368 /* When converting to PC-relative relocation, we
1369 need to adjust addend by -4. */
1370 bfd_put_32 (abfd
, -4, contents
+ irel
->r_offset
);
1371 irel
->r_info
= ELF32_R_INFO (r_symndx
, R_386_PC32
);
1372 *r_type_p
= R_386_PC32
;
1378 /* We have "mov foo@GOT[(%re1g)], %reg2",
1379 "test %reg1, foo@GOT(%reg2)" and
1380 "binop foo@GOT[(%reg1)], %reg2".
1382 Avoid optimizing _DYNAMIC since ld.so may use its
1383 link-time address. */
1384 if (h
== htab
->elf
.hdynamic
)
1387 /* def_regular is set by an assignment in a linker script in
1388 bfd_elf_record_link_assignment. start_stop is set on
1389 __start_SECNAME/__stop_SECNAME which mark section SECNAME. */
1393 || h
->root
.type
== bfd_link_hash_defined
1394 || h
->root
.type
== bfd_link_hash_defweak
)
1400 if (abs_symbol
&& local_ref
)
1405 /* Convert "mov foo@GOT[(%reg1)], %reg2" to
1406 "mov $foo, %reg2" with R_386_32. */
1408 modrm
= 0xc0 | (modrm
& 0x38) >> 3;
1409 bfd_put_8 (abfd
, modrm
, contents
+ roff
- 1);
1414 /* Convert "mov foo@GOT(%reg1), %reg2" to
1415 "lea foo@GOTOFF(%reg1), %reg2". */
1416 r_type
= R_386_GOTOFF
;
1422 /* Only R_386_32 is supported. */
1428 /* Convert "test %reg1, foo@GOT(%reg2)" to
1429 "test $foo, %reg1". */
1430 modrm
= 0xc0 | (modrm
& 0x38) >> 3;
1435 /* Convert "binop foo@GOT(%reg1), %reg2" to
1436 "binop $foo, %reg2". */
1438 | (modrm
& 0x38) >> 3
1442 bfd_put_8 (abfd
, modrm
, contents
+ roff
- 1);
1446 bfd_put_8 (abfd
, opcode
, contents
+ roff
- 2);
1447 irel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
1456 /* Rename some of the generic section flags to better document how they
1458 #define check_relocs_failed sec_flg0
1460 /* Look through the relocs for a section during the first phase, and
1461 calculate needed space in the global offset table, procedure linkage
1462 table, and dynamic reloc sections. */
1465 elf_i386_check_relocs (bfd
*abfd
,
1466 struct bfd_link_info
*info
,
1468 const Elf_Internal_Rela
*relocs
)
1470 struct elf_x86_link_hash_table
*htab
;
1471 Elf_Internal_Shdr
*symtab_hdr
;
1472 struct elf_link_hash_entry
**sym_hashes
;
1473 const Elf_Internal_Rela
*rel
;
1474 const Elf_Internal_Rela
*rel_end
;
1477 bfd_boolean converted
;
1479 if (bfd_link_relocatable (info
))
1482 htab
= elf_x86_hash_table (info
, I386_ELF_DATA
);
1485 sec
->check_relocs_failed
= 1;
1489 BFD_ASSERT (is_x86_elf (abfd
, htab
));
1491 /* Get the section contents. */
1492 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
1493 contents
= elf_section_data (sec
)->this_hdr
.contents
;
1494 else if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
1496 sec
->check_relocs_failed
= 1;
1500 symtab_hdr
= &elf_symtab_hdr (abfd
);
1501 sym_hashes
= elf_sym_hashes (abfd
);
1507 rel_end
= relocs
+ sec
->reloc_count
;
1508 for (rel
= relocs
; rel
< rel_end
; rel
++)
1510 unsigned int r_type
;
1511 unsigned int r_symndx
;
1512 struct elf_link_hash_entry
*h
;
1513 struct elf_x86_link_hash_entry
*eh
;
1514 Elf_Internal_Sym
*isym
;
1516 bfd_boolean size_reloc
;
1517 bfd_boolean no_dynreloc
;
1519 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1520 r_type
= ELF32_R_TYPE (rel
->r_info
);
1522 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
1524 /* xgettext:c-format */
1525 _bfd_error_handler (_("%pB: bad symbol index: %d"),
1530 if (r_symndx
< symtab_hdr
->sh_info
)
1532 /* A local symbol. */
1533 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
1538 /* Check relocation against local STT_GNU_IFUNC symbol. */
1539 if (ELF32_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
1541 h
= _bfd_elf_x86_get_local_sym_hash (htab
, abfd
, rel
, TRUE
);
1545 /* Fake a STT_GNU_IFUNC symbol. */
1546 h
->root
.root
.string
= bfd_elf_sym_name (abfd
, symtab_hdr
,
1548 h
->type
= STT_GNU_IFUNC
;
1551 h
->forced_local
= 1;
1552 h
->root
.type
= bfd_link_hash_defined
;
1560 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1561 while (h
->root
.type
== bfd_link_hash_indirect
1562 || h
->root
.type
== bfd_link_hash_warning
)
1563 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1566 eh
= (struct elf_x86_link_hash_entry
*) h
;
1569 if (r_type
== R_386_GOTOFF
)
1572 /* It is referenced by a non-shared object. */
1576 if (r_type
== R_386_GOT32X
1577 && (h
== NULL
|| h
->type
!= STT_GNU_IFUNC
))
1579 Elf_Internal_Rela
*irel
= (Elf_Internal_Rela
*) rel
;
1580 if (!elf_i386_convert_load_reloc (abfd
, symtab_hdr
, contents
,
1586 if (!_bfd_elf_x86_valid_reloc_p (sec
, info
, htab
, rel
, h
, isym
,
1587 symtab_hdr
, &no_dynreloc
))
1590 if (! elf_i386_tls_transition (info
, abfd
, sec
, contents
,
1591 symtab_hdr
, sym_hashes
,
1592 &r_type
, GOT_UNKNOWN
,
1593 rel
, rel_end
, h
, r_symndx
, FALSE
))
1596 /* Check if _GLOBAL_OFFSET_TABLE_ is referenced. */
1597 if (h
== htab
->elf
.hgot
)
1598 htab
->got_referenced
= TRUE
;
1603 htab
->tls_ld_or_ldm_got
.refcount
= 1;
1607 /* This symbol requires a procedure linkage table entry. We
1608 actually build the entry in adjust_dynamic_symbol,
1609 because this might be a case of linking PIC code which is
1610 never referenced by a dynamic object, in which case we
1611 don't need to generate a procedure linkage table entry
1614 /* If this is a local symbol, we resolve it directly without
1615 creating a procedure linkage table entry. */
1619 eh
->zero_undefweak
&= 0x2;
1621 h
->plt
.refcount
= 1;
1628 case R_386_TLS_IE_32
:
1630 case R_386_TLS_GOTIE
:
1631 if (!bfd_link_executable (info
))
1632 info
->flags
|= DF_STATIC_TLS
;
1638 case R_386_TLS_GOTDESC
:
1639 case R_386_TLS_DESC_CALL
:
1640 /* This symbol requires a global offset table entry. */
1642 int tls_type
, old_tls_type
;
1649 tls_type
= GOT_NORMAL
;
1651 case R_386_TLS_GD
: tls_type
= GOT_TLS_GD
; break;
1652 case R_386_TLS_GOTDESC
:
1653 case R_386_TLS_DESC_CALL
:
1654 tls_type
= GOT_TLS_GDESC
; break;
1655 case R_386_TLS_IE_32
:
1656 if (ELF32_R_TYPE (rel
->r_info
) == r_type
)
1657 tls_type
= GOT_TLS_IE_NEG
;
1659 /* If this is a GD->IE transition, we may use either of
1660 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
1661 tls_type
= GOT_TLS_IE
;
1664 case R_386_TLS_GOTIE
:
1665 tls_type
= GOT_TLS_IE_POS
; break;
1670 h
->got
.refcount
= 1;
1671 old_tls_type
= elf_x86_hash_entry (h
)->tls_type
;
1675 bfd_signed_vma
*local_got_refcounts
;
1677 /* This is a global offset table entry for a local symbol. */
1678 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1679 if (local_got_refcounts
== NULL
)
1683 size
= symtab_hdr
->sh_info
;
1684 size
*= (sizeof (bfd_signed_vma
)
1685 + sizeof (bfd_vma
) + sizeof(char));
1686 local_got_refcounts
= (bfd_signed_vma
*)
1687 bfd_zalloc (abfd
, size
);
1688 if (local_got_refcounts
== NULL
)
1690 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1691 elf_x86_local_tlsdesc_gotent (abfd
)
1692 = (bfd_vma
*) (local_got_refcounts
+ symtab_hdr
->sh_info
);
1693 elf_x86_local_got_tls_type (abfd
)
1694 = (char *) (local_got_refcounts
+ 2 * symtab_hdr
->sh_info
);
1696 local_got_refcounts
[r_symndx
] = 1;
1697 old_tls_type
= elf_x86_local_got_tls_type (abfd
) [r_symndx
];
1700 if ((old_tls_type
& GOT_TLS_IE
) && (tls_type
& GOT_TLS_IE
))
1701 tls_type
|= old_tls_type
;
1702 /* If a TLS symbol is accessed using IE at least once,
1703 there is no point to use dynamic model for it. */
1704 else if (old_tls_type
!= tls_type
&& old_tls_type
!= GOT_UNKNOWN
1705 && (! GOT_TLS_GD_ANY_P (old_tls_type
)
1706 || (tls_type
& GOT_TLS_IE
) == 0))
1708 if ((old_tls_type
& GOT_TLS_IE
) && GOT_TLS_GD_ANY_P (tls_type
))
1709 tls_type
= old_tls_type
;
1710 else if (GOT_TLS_GD_ANY_P (old_tls_type
)
1711 && GOT_TLS_GD_ANY_P (tls_type
))
1712 tls_type
|= old_tls_type
;
1716 name
= h
->root
.root
.string
;
1718 name
= bfd_elf_sym_name (abfd
, symtab_hdr
, isym
,
1721 /* xgettext:c-format */
1722 (_("%pB: `%s' accessed both as normal and "
1723 "thread local symbol"),
1725 bfd_set_error (bfd_error_bad_value
);
1730 if (old_tls_type
!= tls_type
)
1733 elf_x86_hash_entry (h
)->tls_type
= tls_type
;
1735 elf_x86_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
1743 if (r_type
!= R_386_TLS_IE
)
1747 eh
->zero_undefweak
&= 0x2;
1749 /* Need GOT to resolve undefined weak symbol to 0. */
1750 if (r_type
== R_386_GOTOFF
1751 && h
->root
.type
== bfd_link_hash_undefweak
1752 && bfd_link_executable (info
))
1753 htab
->got_referenced
= TRUE
;
1759 case R_386_TLS_LE_32
:
1762 eh
->zero_undefweak
&= 0x2;
1763 if (bfd_link_executable (info
))
1765 info
->flags
|= DF_STATIC_TLS
;
1770 if (eh
!= NULL
&& (sec
->flags
& SEC_CODE
) != 0)
1771 eh
->zero_undefweak
|= 0x2;
1773 /* We are called after all symbols have been resolved. Only
1774 relocation against STT_GNU_IFUNC symbol must go through
1777 && (bfd_link_executable (info
)
1778 || h
->type
== STT_GNU_IFUNC
))
1780 bfd_boolean func_pointer_ref
= FALSE
;
1782 if (r_type
== R_386_PC32
)
1784 /* Since something like ".long foo - ." may be used
1785 as pointer, make sure that PLT is used if foo is
1786 a function defined in a shared library. */
1787 if ((sec
->flags
& SEC_CODE
) == 0)
1788 h
->pointer_equality_needed
= 1;
1789 else if (h
->type
== STT_GNU_IFUNC
1790 && bfd_link_pic (info
))
1793 /* xgettext:c-format */
1794 (_("%pB: unsupported non-PIC call to IFUNC `%s'"),
1795 abfd
, h
->root
.root
.string
);
1796 bfd_set_error (bfd_error_bad_value
);
1802 h
->pointer_equality_needed
= 1;
1803 /* R_386_32 can be resolved at run-time. */
1804 if (r_type
== R_386_32
1805 && (sec
->flags
& SEC_READONLY
) == 0)
1806 func_pointer_ref
= TRUE
;
1809 if (!func_pointer_ref
)
1811 /* If this reloc is in a read-only section, we might
1812 need a copy reloc. We can't check reliably at this
1813 stage whether the section is read-only, as input
1814 sections have not yet been mapped to output sections.
1815 Tentatively set the flag for now, and correct in
1816 adjust_dynamic_symbol. */
1819 /* We may need a .plt entry if the symbol is a function
1820 defined in a shared lib or is a function referenced
1821 from the code or read-only section. */
1823 || (sec
->flags
& (SEC_CODE
| SEC_READONLY
)) != 0)
1824 h
->plt
.refcount
= 1;
1831 && NEED_DYNAMIC_RELOCATION_P (info
, FALSE
, h
, sec
, r_type
,
1834 struct elf_dyn_relocs
*p
;
1835 struct elf_dyn_relocs
**head
;
1837 /* We must copy these reloc types into the output file.
1838 Create a reloc section in dynobj and make room for
1842 sreloc
= _bfd_elf_make_dynamic_reloc_section
1843 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ FALSE
);
1849 /* If this is a global symbol, we count the number of
1850 relocations we need for this symbol. */
1853 head
= &h
->dyn_relocs
;
1857 /* Track dynamic relocs needed for local syms too.
1858 We really need local syms available to do this
1863 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
1868 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1872 vpp
= &elf_section_data (s
)->local_dynrel
;
1873 head
= (struct elf_dyn_relocs
**)vpp
;
1877 if (p
== NULL
|| p
->sec
!= sec
)
1879 size_t amt
= sizeof *p
;
1880 p
= (struct elf_dyn_relocs
*) bfd_alloc (htab
->elf
.dynobj
,
1892 /* Count size relocation as PC-relative relocation. */
1893 if (r_type
== R_386_PC32
|| size_reloc
)
1898 /* This relocation describes the C++ object vtable hierarchy.
1899 Reconstruct it for later use during GC. */
1900 case R_386_GNU_VTINHERIT
:
1901 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1905 /* This relocation describes which C++ vtable entries are actually
1906 used. Record for later use during GC. */
1907 case R_386_GNU_VTENTRY
:
1908 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
1917 if (elf_section_data (sec
)->this_hdr
.contents
!= contents
)
1919 if (!converted
&& !info
->keep_memory
)
1923 /* Cache the section contents for elf_link_input_bfd if any
1924 load is converted or --no-keep-memory isn't used. */
1925 elf_section_data (sec
)->this_hdr
.contents
= contents
;
1929 /* Cache relocations if any load is converted. */
1930 if (elf_section_data (sec
)->relocs
!= relocs
&& converted
)
1931 elf_section_data (sec
)->relocs
= (Elf_Internal_Rela
*) relocs
;
1936 if (elf_section_data (sec
)->this_hdr
.contents
!= contents
)
1938 sec
->check_relocs_failed
= 1;
1942 /* Set the correct type for an x86 ELF section. We do this by the
1943 section name, which is a hack, but ought to work. */
1946 elf_i386_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1947 Elf_Internal_Shdr
*hdr
,
1952 name
= bfd_section_name (sec
);
1954 /* This is an ugly, but unfortunately necessary hack that is
1955 needed when producing EFI binaries on x86. It tells
1956 elf.c:elf_fake_sections() not to consider ".reloc" as a section
1957 containing ELF relocation info. We need this hack in order to
1958 be able to generate ELF binaries that can be translated into
1959 EFI applications (which are essentially COFF objects). Those
1960 files contain a COFF ".reloc" section inside an ELFNN object,
1961 which would normally cause BFD to segfault because it would
1962 attempt to interpret this section as containing relocation
1963 entries for section "oc". With this hack enabled, ".reloc"
1964 will be treated as a normal data section, which will avoid the
1965 segfault. However, you won't be able to create an ELFNN binary
1966 with a section named "oc" that needs relocations, but that's
1967 the kind of ugly side-effects you get when detecting section
1968 types based on their names... In practice, this limitation is
1969 unlikely to bite. */
1970 if (strcmp (name
, ".reloc") == 0)
1971 hdr
->sh_type
= SHT_PROGBITS
;
1976 /* Return the relocation value for @tpoff relocation
1977 if STT_TLS virtual address is ADDRESS. */
1980 elf_i386_tpoff (struct bfd_link_info
*info
, bfd_vma address
)
1982 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
1983 const struct elf_backend_data
*bed
= get_elf_backend_data (info
->output_bfd
);
1984 bfd_vma static_tls_size
;
1986 /* If tls_sec is NULL, we should have signalled an error already. */
1987 if (htab
->tls_sec
== NULL
)
1990 /* Consider special static TLS alignment requirements. */
1991 static_tls_size
= BFD_ALIGN (htab
->tls_size
, bed
->static_tls_alignment
);
1992 return static_tls_size
+ htab
->tls_sec
->vma
- address
;
1995 /* Relocate an i386 ELF section. */
1998 elf_i386_relocate_section (bfd
*output_bfd
,
1999 struct bfd_link_info
*info
,
2001 asection
*input_section
,
2003 Elf_Internal_Rela
*relocs
,
2004 Elf_Internal_Sym
*local_syms
,
2005 asection
**local_sections
)
2007 struct elf_x86_link_hash_table
*htab
;
2008 Elf_Internal_Shdr
*symtab_hdr
;
2009 struct elf_link_hash_entry
**sym_hashes
;
2010 bfd_vma
*local_got_offsets
;
2011 bfd_vma
*local_tlsdesc_gotents
;
2012 Elf_Internal_Rela
*rel
;
2013 Elf_Internal_Rela
*wrel
;
2014 Elf_Internal_Rela
*relend
;
2015 bfd_boolean is_vxworks_tls
;
2016 unsigned plt_entry_size
;
2018 /* Skip if check_relocs failed. */
2019 if (input_section
->check_relocs_failed
)
2022 htab
= elf_x86_hash_table (info
, I386_ELF_DATA
);
2026 if (!is_x86_elf (input_bfd
, htab
))
2028 bfd_set_error (bfd_error_wrong_format
);
2032 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
2033 sym_hashes
= elf_sym_hashes (input_bfd
);
2034 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2035 local_tlsdesc_gotents
= elf_x86_local_tlsdesc_gotent (input_bfd
);
2036 /* We have to handle relocations in vxworks .tls_vars sections
2037 specially, because the dynamic loader is 'weird'. */
2038 is_vxworks_tls
= (htab
->elf
.target_os
== is_vxworks
2039 && bfd_link_pic (info
)
2040 && !strcmp (input_section
->output_section
->name
,
2043 _bfd_x86_elf_set_tls_module_base (info
);
2045 plt_entry_size
= htab
->plt
.plt_entry_size
;
2047 rel
= wrel
= relocs
;
2048 relend
= relocs
+ input_section
->reloc_count
;
2049 for (; rel
< relend
; wrel
++, rel
++)
2051 unsigned int r_type
, r_type_tls
;
2052 reloc_howto_type
*howto
;
2053 unsigned long r_symndx
;
2054 struct elf_link_hash_entry
*h
;
2055 struct elf_x86_link_hash_entry
*eh
;
2056 Elf_Internal_Sym
*sym
;
2058 bfd_vma off
, offplt
, plt_offset
;
2060 bfd_boolean unresolved_reloc
;
2061 bfd_reloc_status_type r
;
2065 asection
*resolved_plt
;
2066 bfd_boolean resolved_to_zero
;
2067 bfd_boolean relative_reloc
;
2069 r_type
= ELF32_R_TYPE (rel
->r_info
);
2070 if (r_type
== R_386_GNU_VTINHERIT
2071 || r_type
== R_386_GNU_VTENTRY
)
2078 howto
= elf_i386_rtype_to_howto (r_type
);
2080 return _bfd_unrecognized_reloc (input_bfd
, input_section
, r_type
);
2082 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2086 unresolved_reloc
= FALSE
;
2087 if (r_symndx
< symtab_hdr
->sh_info
)
2089 sym
= local_syms
+ r_symndx
;
2090 sec
= local_sections
[r_symndx
];
2091 relocation
= (sec
->output_section
->vma
2092 + sec
->output_offset
2094 st_size
= sym
->st_size
;
2096 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
2097 && ((sec
->flags
& SEC_MERGE
) != 0
2098 || (bfd_link_relocatable (info
)
2099 && sec
->output_offset
!= 0)))
2102 bfd_byte
*where
= contents
+ rel
->r_offset
;
2104 switch (howto
->size
)
2107 addend
= bfd_get_8 (input_bfd
, where
);
2108 if (howto
->pc_relative
)
2110 addend
= (addend
^ 0x80) - 0x80;
2115 addend
= bfd_get_16 (input_bfd
, where
);
2116 if (howto
->pc_relative
)
2118 addend
= (addend
^ 0x8000) - 0x8000;
2123 addend
= bfd_get_32 (input_bfd
, where
);
2124 if (howto
->pc_relative
)
2126 addend
= (addend
^ 0x80000000) - 0x80000000;
2134 if (bfd_link_relocatable (info
))
2135 addend
+= sec
->output_offset
;
2138 asection
*msec
= sec
;
2139 addend
= _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
,
2141 addend
-= relocation
;
2142 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
2145 switch (howto
->size
)
2148 /* FIXME: overflow checks. */
2149 if (howto
->pc_relative
)
2151 bfd_put_8 (input_bfd
, addend
, where
);
2154 if (howto
->pc_relative
)
2156 bfd_put_16 (input_bfd
, addend
, where
);
2159 if (howto
->pc_relative
)
2161 bfd_put_32 (input_bfd
, addend
, where
);
2165 else if (!bfd_link_relocatable (info
)
2166 && ELF32_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
2168 /* Relocate against local STT_GNU_IFUNC symbol. */
2169 h
= _bfd_elf_x86_get_local_sym_hash (htab
, input_bfd
, rel
,
2174 /* Set STT_GNU_IFUNC symbol value. */
2175 h
->root
.u
.def
.value
= sym
->st_value
;
2176 h
->root
.u
.def
.section
= sec
;
2181 bfd_boolean warned ATTRIBUTE_UNUSED
;
2182 bfd_boolean ignored ATTRIBUTE_UNUSED
;
2184 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2185 r_symndx
, symtab_hdr
, sym_hashes
,
2187 unresolved_reloc
, warned
, ignored
);
2191 if (sec
!= NULL
&& discarded_section (sec
))
2193 _bfd_clear_contents (howto
, input_bfd
, input_section
,
2194 contents
, rel
->r_offset
);
2195 wrel
->r_offset
= rel
->r_offset
;
2199 /* For ld -r, remove relocations in debug sections against
2200 sections defined in discarded sections. Not done for
2201 eh_frame editing code expects to be present. */
2202 if (bfd_link_relocatable (info
)
2203 && (input_section
->flags
& SEC_DEBUGGING
))
2209 if (bfd_link_relocatable (info
))
2216 eh
= (struct elf_x86_link_hash_entry
*) h
;
2218 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2219 it here if it is defined in a non-shared object. */
2221 && h
->type
== STT_GNU_IFUNC
2224 asection
*gotplt
, *base_got
;
2228 if ((input_section
->flags
& SEC_ALLOC
) == 0)
2230 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
2231 STT_GNU_IFUNC symbol as STT_FUNC. */
2232 if (elf_section_type (input_section
) == SHT_NOTE
)
2234 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2235 sections because such sections are not SEC_ALLOC and
2236 thus ld.so will not process them. */
2237 if ((input_section
->flags
& SEC_DEBUGGING
) != 0)
2242 /* STT_GNU_IFUNC symbol must go through PLT. */
2243 if (htab
->elf
.splt
!= NULL
)
2245 if (htab
->plt_second
!= NULL
)
2247 resolved_plt
= htab
->plt_second
;
2248 plt_offset
= eh
->plt_second
.offset
;
2252 resolved_plt
= htab
->elf
.splt
;
2253 plt_offset
= h
->plt
.offset
;
2255 gotplt
= htab
->elf
.sgotplt
;
2259 resolved_plt
= htab
->elf
.iplt
;
2260 plt_offset
= h
->plt
.offset
;
2261 gotplt
= htab
->elf
.igotplt
;
2271 base_got
= htab
->elf
.sgot
;
2272 off
= h
->got
.offset
;
2274 if (base_got
== NULL
)
2277 if (off
== (bfd_vma
) -1)
2279 /* We can't use h->got.offset here to save state, or
2280 even just remember the offset, as finish_dynamic_symbol
2281 would use that as offset into .got. */
2283 if (h
->plt
.offset
== (bfd_vma
) -1)
2286 if (htab
->elf
.splt
!= NULL
)
2288 plt_index
= (h
->plt
.offset
/ plt_entry_size
2289 - htab
->plt
.has_plt0
);
2290 off
= (plt_index
+ 3) * 4;
2291 base_got
= htab
->elf
.sgotplt
;
2295 plt_index
= h
->plt
.offset
/ plt_entry_size
;
2296 off
= plt_index
* 4;
2297 base_got
= htab
->elf
.igotplt
;
2300 if (h
->dynindx
== -1
2304 /* This references the local defitionion. We must
2305 initialize this entry in the global offset table.
2306 Since the offset must always be a multiple of 8,
2307 we use the least significant bit to record
2308 whether we have initialized it already.
2310 When doing a dynamic link, we create a .rela.got
2311 relocation entry to initialize the value. This
2312 is done in the finish_dynamic_symbol routine. */
2317 bfd_put_32 (output_bfd
, relocation
,
2318 base_got
->contents
+ off
);
2326 relocation
= (base_got
->output_section
->vma
2327 + base_got
->output_offset
+ off
2328 - gotplt
->output_section
->vma
2329 - gotplt
->output_offset
);
2331 if (rel
->r_offset
> 1
2332 && (*(contents
+ rel
->r_offset
- 1) & 0xc7) == 0x5
2333 && *(contents
+ rel
->r_offset
- 2) != 0x8d)
2335 if (bfd_link_pic (info
))
2336 goto disallow_got32
;
2338 /* Add the GOT base if there is no base register. */
2339 relocation
+= (gotplt
->output_section
->vma
2340 + gotplt
->output_offset
);
2342 else if (htab
->elf
.splt
== NULL
)
2344 /* Adjust for static executables. */
2345 relocation
+= gotplt
->output_offset
;
2351 if (h
->plt
.offset
== (bfd_vma
) -1)
2353 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2354 if (r_type
== R_386_32
2355 && (input_section
->flags
& SEC_CODE
) == 0)
2356 goto do_ifunc_pointer
;
2357 goto bad_ifunc_reloc
;
2360 relocation
= (resolved_plt
->output_section
->vma
2361 + resolved_plt
->output_offset
+ plt_offset
);
2367 if (h
->root
.root
.string
)
2368 name
= h
->root
.root
.string
;
2370 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
2373 /* xgettext:c-format */
2374 (_("%pB: relocation %s against STT_GNU_IFUNC "
2375 "symbol `%s' isn't supported"), input_bfd
,
2377 bfd_set_error (bfd_error_bad_value
);
2381 /* Generate dynamic relcoation only when there is a
2382 non-GOT reference in a shared object. */
2383 if ((bfd_link_pic (info
) && h
->non_got_ref
)
2384 || h
->plt
.offset
== (bfd_vma
) -1)
2386 Elf_Internal_Rela outrel
;
2391 /* Need a dynamic relocation to get the real function
2393 offset
= _bfd_elf_section_offset (output_bfd
,
2397 if (offset
== (bfd_vma
) -1
2398 || offset
== (bfd_vma
) -2)
2401 outrel
.r_offset
= (input_section
->output_section
->vma
2402 + input_section
->output_offset
2405 if (POINTER_LOCAL_IFUNC_P (info
, h
))
2407 info
->callbacks
->minfo (_("Local IFUNC function `%s' in %pB\n"),
2408 h
->root
.root
.string
,
2409 h
->root
.u
.def
.section
->owner
);
2411 /* This symbol is resolved locally. */
2412 outrel
.r_info
= ELF32_R_INFO (0, R_386_IRELATIVE
);
2413 bfd_put_32 (output_bfd
,
2414 (h
->root
.u
.def
.value
2415 + h
->root
.u
.def
.section
->output_section
->vma
2416 + h
->root
.u
.def
.section
->output_offset
),
2420 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2422 /* Dynamic relocations are stored in
2423 1. .rel.ifunc section in PIC object.
2424 2. .rel.got section in dynamic executable.
2425 3. .rel.iplt section in static executable. */
2426 if (bfd_link_pic (info
))
2427 sreloc
= htab
->elf
.irelifunc
;
2428 else if (htab
->elf
.splt
!= NULL
)
2429 sreloc
= htab
->elf
.srelgot
;
2431 sreloc
= htab
->elf
.irelplt
;
2432 elf_append_rel (output_bfd
, sreloc
, &outrel
);
2434 /* If this reloc is against an external symbol, we
2435 do not want to fiddle with the addend. Otherwise,
2436 we need to include the symbol value so that it
2437 becomes an addend for the dynamic reloc. For an
2438 internal symbol, we have updated addend. */
2447 relocation
-= (gotplt
->output_section
->vma
2448 + gotplt
->output_offset
);
2454 resolved_to_zero
= (eh
!= NULL
2455 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info
, eh
));
2461 /* Relocation is to the entry for this symbol in the global
2463 if (htab
->elf
.sgot
== NULL
)
2466 relative_reloc
= FALSE
;
2469 off
= h
->got
.offset
;
2470 if (RESOLVED_LOCALLY_P (info
, h
, htab
))
2472 /* We must initialize this entry in the global offset
2473 table. Since the offset must always be a multiple
2474 of 4, we use the least significant bit to record
2475 whether we have initialized it already.
2477 When doing a dynamic link, we create a .rel.got
2478 relocation entry to initialize the value. This
2479 is done in the finish_dynamic_symbol routine. */
2484 bfd_put_32 (output_bfd
, relocation
,
2485 htab
->elf
.sgot
->contents
+ off
);
2488 if (GENERATE_RELATIVE_RELOC_P (info
, h
))
2490 /* PR ld/21402: If this symbol isn't dynamic
2491 in PIC, generate R_386_RELATIVE here. */
2492 eh
->no_finish_dynamic_symbol
= 1;
2493 relative_reloc
= TRUE
;
2498 unresolved_reloc
= FALSE
;
2502 if (local_got_offsets
== NULL
)
2505 off
= local_got_offsets
[r_symndx
];
2507 /* The offset must always be a multiple of 4. We use
2508 the least significant bit to record whether we have
2509 already generated the necessary reloc. */
2514 bfd_put_32 (output_bfd
, relocation
,
2515 htab
->elf
.sgot
->contents
+ off
);
2516 local_got_offsets
[r_symndx
] |= 1;
2518 if (bfd_link_pic (info
))
2519 relative_reloc
= TRUE
;
2526 Elf_Internal_Rela outrel
;
2528 s
= htab
->elf
.srelgot
;
2532 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
2533 + htab
->elf
.sgot
->output_offset
2535 outrel
.r_info
= ELF32_R_INFO (0, R_386_RELATIVE
);
2536 elf_append_rel (output_bfd
, s
, &outrel
);
2539 if (off
>= (bfd_vma
) -2)
2542 relocation
= (htab
->elf
.sgot
->output_section
->vma
2543 + htab
->elf
.sgot
->output_offset
+ off
);
2544 if (rel
->r_offset
> 1
2545 && (*(contents
+ rel
->r_offset
- 1) & 0xc7) == 0x5
2546 && *(contents
+ rel
->r_offset
- 2) != 0x8d)
2548 if (bfd_link_pic (info
))
2550 /* For PIC, disallow R_386_GOT32 without a base
2551 register, except for "lea foo@GOT, %reg", since
2552 we don't know what the GOT base is. */
2556 if (h
== NULL
|| h
->root
.root
.string
== NULL
)
2557 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
2560 name
= h
->root
.root
.string
;
2563 /* xgettext:c-format */
2564 (_("%pB: direct GOT relocation %s against `%s'"
2565 " without base register can not be used"
2566 " when making a shared object"),
2567 input_bfd
, howto
->name
, name
);
2568 bfd_set_error (bfd_error_bad_value
);
2574 /* Subtract the .got.plt section address only with a base
2576 relocation
-= (htab
->elf
.sgotplt
->output_section
->vma
2577 + htab
->elf
.sgotplt
->output_offset
);
2583 /* Relocation is relative to the start of the global offset
2586 /* Check to make sure it isn't a protected function or data
2587 symbol for shared library since it may not be local when
2588 used as function address or with copy relocation. We also
2589 need to make sure that a symbol is referenced locally. */
2590 if (!bfd_link_executable (info
) && h
)
2592 if (!h
->def_regular
)
2596 switch (ELF_ST_VISIBILITY (h
->other
))
2599 v
= _("hidden symbol");
2602 v
= _("internal symbol");
2605 v
= _("protected symbol");
2613 /* xgettext:c-format */
2614 (_("%pB: relocation R_386_GOTOFF against undefined %s"
2615 " `%s' can not be used when making a shared object"),
2616 input_bfd
, v
, h
->root
.root
.string
);
2617 bfd_set_error (bfd_error_bad_value
);
2620 else if (!SYMBOL_REFERENCES_LOCAL_P (info
, h
)
2621 && (h
->type
== STT_FUNC
2622 || h
->type
== STT_OBJECT
)
2623 && ELF_ST_VISIBILITY (h
->other
) == STV_PROTECTED
)
2626 /* xgettext:c-format */
2627 (_("%pB: relocation R_386_GOTOFF against protected %s"
2628 " `%s' can not be used when making a shared object"),
2630 h
->type
== STT_FUNC
? "function" : "data",
2631 h
->root
.root
.string
);
2632 bfd_set_error (bfd_error_bad_value
);
2637 /* Note that sgot is not involved in this
2638 calculation. We always want the start of .got.plt. If we
2639 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
2640 permitted by the ABI, we might have to change this
2642 relocation
-= htab
->elf
.sgotplt
->output_section
->vma
2643 + htab
->elf
.sgotplt
->output_offset
;
2647 /* Use global offset table as symbol value. */
2648 relocation
= htab
->elf
.sgotplt
->output_section
->vma
2649 + htab
->elf
.sgotplt
->output_offset
;
2650 unresolved_reloc
= FALSE
;
2654 /* Relocation is to the entry for this symbol in the
2655 procedure linkage table. */
2657 /* Resolve a PLT32 reloc against a local symbol directly,
2658 without using the procedure linkage table. */
2662 if ((h
->plt
.offset
== (bfd_vma
) -1
2663 && eh
->plt_got
.offset
== (bfd_vma
) -1)
2664 || htab
->elf
.splt
== NULL
)
2666 /* We didn't make a PLT entry for this symbol. This
2667 happens when statically linking PIC code, or when
2668 using -Bsymbolic. */
2672 if (h
->plt
.offset
!= (bfd_vma
) -1)
2674 if (htab
->plt_second
!= NULL
)
2676 resolved_plt
= htab
->plt_second
;
2677 plt_offset
= eh
->plt_second
.offset
;
2681 resolved_plt
= htab
->elf
.splt
;
2682 plt_offset
= h
->plt
.offset
;
2687 resolved_plt
= htab
->plt_got
;
2688 plt_offset
= eh
->plt_got
.offset
;
2691 relocation
= (resolved_plt
->output_section
->vma
2692 + resolved_plt
->output_offset
2694 unresolved_reloc
= FALSE
;
2698 /* Set to symbol size. */
2699 relocation
= st_size
;
2704 if ((input_section
->flags
& SEC_ALLOC
) == 0
2708 if (GENERATE_DYNAMIC_RELOCATION_P (info
, eh
, r_type
, sec
,
2709 FALSE
, resolved_to_zero
,
2710 (r_type
== R_386_PC32
)))
2712 Elf_Internal_Rela outrel
;
2713 bfd_boolean skip
, relocate
;
2716 /* When generating a shared object, these relocations
2717 are copied into the output file to be resolved at run
2724 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2726 if (outrel
.r_offset
== (bfd_vma
) -1)
2728 else if (outrel
.r_offset
== (bfd_vma
) -2)
2729 skip
= TRUE
, relocate
= TRUE
;
2730 outrel
.r_offset
+= (input_section
->output_section
->vma
2731 + input_section
->output_offset
);
2734 memset (&outrel
, 0, sizeof outrel
);
2735 else if (COPY_INPUT_RELOC_P (info
, h
, r_type
))
2736 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2739 /* This symbol is local, or marked to become local. */
2741 outrel
.r_info
= ELF32_R_INFO (0, R_386_RELATIVE
);
2744 sreloc
= elf_section_data (input_section
)->sreloc
;
2746 if (sreloc
== NULL
|| sreloc
->contents
== NULL
)
2748 r
= bfd_reloc_notsupported
;
2749 goto check_relocation_error
;
2752 elf_append_rel (output_bfd
, sreloc
, &outrel
);
2754 /* If this reloc is against an external symbol, we do
2755 not want to fiddle with the addend. Otherwise, we
2756 need to include the symbol value so that it becomes
2757 an addend for the dynamic reloc. */
2764 if (!bfd_link_executable (info
))
2766 Elf_Internal_Rela outrel
;
2769 outrel
.r_offset
= rel
->r_offset
2770 + input_section
->output_section
->vma
2771 + input_section
->output_offset
;
2772 outrel
.r_info
= ELF32_R_INFO (0, R_386_RELATIVE
);
2773 sreloc
= elf_section_data (input_section
)->sreloc
;
2776 elf_append_rel (output_bfd
, sreloc
, &outrel
);
2781 case R_386_TLS_GOTDESC
:
2782 case R_386_TLS_DESC_CALL
:
2783 case R_386_TLS_IE_32
:
2784 case R_386_TLS_GOTIE
:
2785 tls_type
= GOT_UNKNOWN
;
2786 if (h
== NULL
&& local_got_offsets
)
2787 tls_type
= elf_x86_local_got_tls_type (input_bfd
) [r_symndx
];
2789 tls_type
= elf_x86_hash_entry(h
)->tls_type
;
2790 if (tls_type
== GOT_TLS_IE
)
2791 tls_type
= GOT_TLS_IE_NEG
;
2793 r_type_tls
= r_type
;
2794 if (! elf_i386_tls_transition (info
, input_bfd
,
2795 input_section
, contents
,
2796 symtab_hdr
, sym_hashes
,
2797 &r_type_tls
, tls_type
, rel
,
2798 relend
, h
, r_symndx
, TRUE
))
2801 if (r_type_tls
== R_386_TLS_LE_32
)
2803 BFD_ASSERT (! unresolved_reloc
);
2804 if (r_type
== R_386_TLS_GD
)
2809 /* GD->LE transition. */
2810 type
= *(contents
+ rel
->r_offset
- 2);
2814 leal foo@tlsgd(,%ebx,1), %eax
2815 call ___tls_get_addr@PLT
2818 subl $foo@tpoff, %eax
2819 (6 byte form of subl). */
2820 roff
= rel
->r_offset
+ 5;
2825 leal foo@tlsgd(%ebx), %eax
2826 call ___tls_get_addr@PLT
2829 leal foo@tlsgd(%reg), %eax
2830 call *___tls_get_addr@GOT(%reg)
2831 which may be converted to
2832 addr32 call ___tls_get_addr
2834 movl %gs:0, %eax; subl $foo@tpoff, %eax
2835 (6 byte form of subl). */
2836 roff
= rel
->r_offset
+ 6;
2838 memcpy (contents
+ roff
- 8,
2839 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2840 bfd_put_32 (output_bfd
, elf_i386_tpoff (info
, relocation
),
2842 /* Skip R_386_PC32, R_386_PLT32 and R_386_GOT32X. */
2847 else if (r_type
== R_386_TLS_GOTDESC
)
2849 /* GDesc -> LE transition.
2850 It's originally something like:
2851 leal x@tlsdesc(%ebx), %eax
2855 Registers other than %eax may be set up here. */
2860 roff
= rel
->r_offset
;
2861 val
= bfd_get_8 (input_bfd
, contents
+ roff
- 1);
2863 /* Now modify the instruction as appropriate. */
2864 /* aoliva FIXME: remove the above and xor the byte
2866 bfd_put_8 (output_bfd
, val
^ 0x86,
2867 contents
+ roff
- 1);
2868 bfd_put_32 (output_bfd
, -elf_i386_tpoff (info
, relocation
),
2872 else if (r_type
== R_386_TLS_DESC_CALL
)
2874 /* GDesc -> LE transition.
2882 roff
= rel
->r_offset
;
2883 bfd_put_8 (output_bfd
, 0x66, contents
+ roff
);
2884 bfd_put_8 (output_bfd
, 0x90, contents
+ roff
+ 1);
2887 else if (r_type
== R_386_TLS_IE
)
2891 /* IE->LE transition:
2892 Originally it can be one of:
2900 val
= bfd_get_8 (input_bfd
, contents
+ rel
->r_offset
- 1);
2903 /* movl foo, %eax. */
2904 bfd_put_8 (output_bfd
, 0xb8,
2905 contents
+ rel
->r_offset
- 1);
2911 type
= bfd_get_8 (input_bfd
,
2912 contents
+ rel
->r_offset
- 2);
2917 bfd_put_8 (output_bfd
, 0xc7,
2918 contents
+ rel
->r_offset
- 2);
2919 bfd_put_8 (output_bfd
,
2920 0xc0 | ((val
>> 3) & 7),
2921 contents
+ rel
->r_offset
- 1);
2925 bfd_put_8 (output_bfd
, 0x81,
2926 contents
+ rel
->r_offset
- 2);
2927 bfd_put_8 (output_bfd
,
2928 0xc0 | ((val
>> 3) & 7),
2929 contents
+ rel
->r_offset
- 1);
2936 bfd_put_32 (output_bfd
, -elf_i386_tpoff (info
, relocation
),
2937 contents
+ rel
->r_offset
);
2942 unsigned int val
, type
;
2944 /* {IE_32,GOTIE}->LE transition:
2945 Originally it can be one of:
2946 subl foo(%reg1), %reg2
2947 movl foo(%reg1), %reg2
2948 addl foo(%reg1), %reg2
2951 movl $foo, %reg2 (6 byte form)
2952 addl $foo, %reg2. */
2953 type
= bfd_get_8 (input_bfd
, contents
+ rel
->r_offset
- 2);
2954 val
= bfd_get_8 (input_bfd
, contents
+ rel
->r_offset
- 1);
2958 bfd_put_8 (output_bfd
, 0xc7,
2959 contents
+ rel
->r_offset
- 2);
2960 bfd_put_8 (output_bfd
, 0xc0 | ((val
>> 3) & 7),
2961 contents
+ rel
->r_offset
- 1);
2963 else if (type
== 0x2b)
2966 bfd_put_8 (output_bfd
, 0x81,
2967 contents
+ rel
->r_offset
- 2);
2968 bfd_put_8 (output_bfd
, 0xe8 | ((val
>> 3) & 7),
2969 contents
+ rel
->r_offset
- 1);
2971 else if (type
== 0x03)
2974 bfd_put_8 (output_bfd
, 0x81,
2975 contents
+ rel
->r_offset
- 2);
2976 bfd_put_8 (output_bfd
, 0xc0 | ((val
>> 3) & 7),
2977 contents
+ rel
->r_offset
- 1);
2981 if (r_type
== R_386_TLS_GOTIE
)
2982 bfd_put_32 (output_bfd
, -elf_i386_tpoff (info
, relocation
),
2983 contents
+ rel
->r_offset
);
2985 bfd_put_32 (output_bfd
, elf_i386_tpoff (info
, relocation
),
2986 contents
+ rel
->r_offset
);
2991 if (htab
->elf
.sgot
== NULL
)
2996 off
= h
->got
.offset
;
2997 offplt
= elf_x86_hash_entry (h
)->tlsdesc_got
;
3001 if (local_got_offsets
== NULL
)
3004 off
= local_got_offsets
[r_symndx
];
3005 offplt
= local_tlsdesc_gotents
[r_symndx
];
3012 Elf_Internal_Rela outrel
;
3016 if (htab
->elf
.srelgot
== NULL
)
3019 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
3021 if (GOT_TLS_GDESC_P (tls_type
))
3024 outrel
.r_info
= ELF32_R_INFO (indx
, R_386_TLS_DESC
);
3025 BFD_ASSERT (htab
->sgotplt_jump_table_size
+ offplt
+ 8
3026 <= htab
->elf
.sgotplt
->size
);
3027 outrel
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
3028 + htab
->elf
.sgotplt
->output_offset
3030 + htab
->sgotplt_jump_table_size
);
3031 sreloc
= htab
->elf
.srelplt
;
3032 loc
= sreloc
->contents
;
3033 loc
+= (htab
->next_tls_desc_index
++
3034 * sizeof (Elf32_External_Rel
));
3035 BFD_ASSERT (loc
+ sizeof (Elf32_External_Rel
)
3036 <= sreloc
->contents
+ sreloc
->size
);
3037 bfd_elf32_swap_reloc_out (output_bfd
, &outrel
, loc
);
3040 BFD_ASSERT (! unresolved_reloc
);
3041 bfd_put_32 (output_bfd
,
3042 relocation
- _bfd_x86_elf_dtpoff_base (info
),
3043 htab
->elf
.sgotplt
->contents
+ offplt
3044 + htab
->sgotplt_jump_table_size
+ 4);
3048 bfd_put_32 (output_bfd
, 0,
3049 htab
->elf
.sgotplt
->contents
+ offplt
3050 + htab
->sgotplt_jump_table_size
+ 4);
3054 sreloc
= htab
->elf
.srelgot
;
3056 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
3057 + htab
->elf
.sgot
->output_offset
+ off
);
3059 if (GOT_TLS_GD_P (tls_type
))
3060 dr_type
= R_386_TLS_DTPMOD32
;
3061 else if (GOT_TLS_GDESC_P (tls_type
))
3063 else if (tls_type
== GOT_TLS_IE_POS
)
3064 dr_type
= R_386_TLS_TPOFF
;
3066 dr_type
= R_386_TLS_TPOFF32
;
3068 if (dr_type
== R_386_TLS_TPOFF
&& indx
== 0)
3069 bfd_put_32 (output_bfd
,
3070 relocation
- _bfd_x86_elf_dtpoff_base (info
),
3071 htab
->elf
.sgot
->contents
+ off
);
3072 else if (dr_type
== R_386_TLS_TPOFF32
&& indx
== 0)
3073 bfd_put_32 (output_bfd
,
3074 _bfd_x86_elf_dtpoff_base (info
) - relocation
,
3075 htab
->elf
.sgot
->contents
+ off
);
3076 else if (dr_type
!= R_386_TLS_DESC
)
3077 bfd_put_32 (output_bfd
, 0,
3078 htab
->elf
.sgot
->contents
+ off
);
3079 outrel
.r_info
= ELF32_R_INFO (indx
, dr_type
);
3081 elf_append_rel (output_bfd
, sreloc
, &outrel
);
3083 if (GOT_TLS_GD_P (tls_type
))
3087 BFD_ASSERT (! unresolved_reloc
);
3088 bfd_put_32 (output_bfd
,
3089 relocation
- _bfd_x86_elf_dtpoff_base (info
),
3090 htab
->elf
.sgot
->contents
+ off
+ 4);
3094 bfd_put_32 (output_bfd
, 0,
3095 htab
->elf
.sgot
->contents
+ off
+ 4);
3096 outrel
.r_info
= ELF32_R_INFO (indx
,
3097 R_386_TLS_DTPOFF32
);
3098 outrel
.r_offset
+= 4;
3099 elf_append_rel (output_bfd
, sreloc
, &outrel
);
3102 else if (tls_type
== GOT_TLS_IE_BOTH
)
3104 bfd_put_32 (output_bfd
,
3106 ? relocation
- _bfd_x86_elf_dtpoff_base (info
)
3108 htab
->elf
.sgot
->contents
+ off
+ 4);
3109 outrel
.r_info
= ELF32_R_INFO (indx
, R_386_TLS_TPOFF
);
3110 outrel
.r_offset
+= 4;
3111 elf_append_rel (output_bfd
, sreloc
, &outrel
);
3118 local_got_offsets
[r_symndx
] |= 1;
3121 if (off
>= (bfd_vma
) -2
3122 && ! GOT_TLS_GDESC_P (tls_type
))
3124 if (r_type_tls
== R_386_TLS_GOTDESC
3125 || r_type_tls
== R_386_TLS_DESC_CALL
)
3127 relocation
= htab
->sgotplt_jump_table_size
+ offplt
;
3128 unresolved_reloc
= FALSE
;
3130 else if (r_type_tls
== r_type
)
3132 bfd_vma g_o_t
= htab
->elf
.sgotplt
->output_section
->vma
3133 + htab
->elf
.sgotplt
->output_offset
;
3134 relocation
= htab
->elf
.sgot
->output_section
->vma
3135 + htab
->elf
.sgot
->output_offset
+ off
- g_o_t
;
3136 if ((r_type
== R_386_TLS_IE
|| r_type
== R_386_TLS_GOTIE
)
3137 && tls_type
== GOT_TLS_IE_BOTH
)
3139 if (r_type
== R_386_TLS_IE
)
3140 relocation
+= g_o_t
;
3141 unresolved_reloc
= FALSE
;
3143 else if (r_type
== R_386_TLS_GD
)
3145 unsigned int val
, type
;
3148 /* GD->IE transition. */
3149 type
= *(contents
+ rel
->r_offset
- 2);
3150 val
= *(contents
+ rel
->r_offset
- 1);
3154 leal foo@tlsgd(,%ebx,1), %eax
3155 call ___tls_get_addr@PLT
3158 subl $foo@gottpoff(%ebx), %eax. */
3160 roff
= rel
->r_offset
- 3;
3165 leal foo@tlsgd(%ebx), %eax
3166 call ___tls_get_addr@PLT
3169 leal foo@tlsgd(%reg), %eax
3170 call *___tls_get_addr@GOT(%reg)
3171 which may be converted to
3172 addr32 call ___tls_get_addr
3175 subl $foo@gottpoff(%reg), %eax. */
3176 roff
= rel
->r_offset
- 2;
3178 memcpy (contents
+ roff
,
3179 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3180 contents
[roff
+ 7] = 0x80 | (val
& 7);
3181 /* If foo is used only with foo@gotntpoff(%reg) and
3182 foo@indntpoff, but not with foo@gottpoff(%reg), change
3183 subl $foo@gottpoff(%reg), %eax
3185 addl $foo@gotntpoff(%reg), %eax. */
3186 if (tls_type
== GOT_TLS_IE_POS
)
3187 contents
[roff
+ 6] = 0x03;
3188 bfd_put_32 (output_bfd
,
3189 htab
->elf
.sgot
->output_section
->vma
3190 + htab
->elf
.sgot
->output_offset
+ off
3191 - htab
->elf
.sgotplt
->output_section
->vma
3192 - htab
->elf
.sgotplt
->output_offset
,
3193 contents
+ roff
+ 8);
3194 /* Skip R_386_PLT32 and R_386_GOT32X. */
3199 else if (r_type
== R_386_TLS_GOTDESC
)
3201 /* GDesc -> IE transition.
3202 It's originally something like:
3203 leal x@tlsdesc(%ebx), %eax
3206 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
3208 movl x@gottpoff(%ebx), %eax # before negl %eax
3210 Registers other than %eax may be set up here. */
3214 /* First, make sure it's a leal adding ebx to a 32-bit
3215 offset into any register, although it's probably
3216 almost always going to be eax. */
3217 roff
= rel
->r_offset
;
3219 /* Now modify the instruction as appropriate. */
3220 /* To turn a leal into a movl in the form we use it, it
3221 suffices to change the first byte from 0x8d to 0x8b.
3222 aoliva FIXME: should we decide to keep the leal, all
3223 we have to do is remove the statement below, and
3224 adjust the relaxation of R_386_TLS_DESC_CALL. */
3225 bfd_put_8 (output_bfd
, 0x8b, contents
+ roff
- 2);
3227 if (tls_type
== GOT_TLS_IE_BOTH
)
3230 bfd_put_32 (output_bfd
,
3231 htab
->elf
.sgot
->output_section
->vma
3232 + htab
->elf
.sgot
->output_offset
+ off
3233 - htab
->elf
.sgotplt
->output_section
->vma
3234 - htab
->elf
.sgotplt
->output_offset
,
3238 else if (r_type
== R_386_TLS_DESC_CALL
)
3240 /* GDesc -> IE transition.
3248 depending on how we transformed the TLS_GOTDESC above.
3253 roff
= rel
->r_offset
;
3255 /* Now modify the instruction as appropriate. */
3256 if (tls_type
!= GOT_TLS_IE_NEG
)
3259 bfd_put_8 (output_bfd
, 0x66, contents
+ roff
);
3260 bfd_put_8 (output_bfd
, 0x90, contents
+ roff
+ 1);
3265 bfd_put_8 (output_bfd
, 0xf7, contents
+ roff
);
3266 bfd_put_8 (output_bfd
, 0xd8, contents
+ roff
+ 1);
3276 if (! elf_i386_tls_transition (info
, input_bfd
,
3277 input_section
, contents
,
3278 symtab_hdr
, sym_hashes
,
3279 &r_type
, GOT_UNKNOWN
, rel
,
3280 relend
, h
, r_symndx
, TRUE
))
3283 if (r_type
!= R_386_TLS_LDM
)
3285 /* LD->LE transition. Change
3286 leal foo@tlsldm(%ebx) %eax
3287 call ___tls_get_addr@PLT
3291 leal 0(%esi,1), %esi
3293 leal foo@tlsldm(%reg) %eax
3294 call *___tls_get_addr@GOT(%reg)
3295 which may be converted to
3296 addr32 call ___tls_get_addr
3299 leal 0(%esi), %esi */
3300 BFD_ASSERT (r_type
== R_386_TLS_LE_32
);
3301 if (*(contents
+ rel
->r_offset
+ 4) == 0xff
3302 || *(contents
+ rel
->r_offset
+ 4) == 0x67)
3303 memcpy (contents
+ rel
->r_offset
- 2,
3304 "\x65\xa1\0\0\0\0\x8d\xb6\0\0\0", 12);
3306 memcpy (contents
+ rel
->r_offset
- 2,
3307 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
3308 /* Skip R_386_PC32/R_386_PLT32. */
3314 if (htab
->elf
.sgot
== NULL
)
3317 off
= htab
->tls_ld_or_ldm_got
.offset
;
3322 Elf_Internal_Rela outrel
;
3324 if (htab
->elf
.srelgot
== NULL
)
3327 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
3328 + htab
->elf
.sgot
->output_offset
+ off
);
3330 bfd_put_32 (output_bfd
, 0,
3331 htab
->elf
.sgot
->contents
+ off
);
3332 bfd_put_32 (output_bfd
, 0,
3333 htab
->elf
.sgot
->contents
+ off
+ 4);
3334 outrel
.r_info
= ELF32_R_INFO (0, R_386_TLS_DTPMOD32
);
3335 elf_append_rel (output_bfd
, htab
->elf
.srelgot
, &outrel
);
3336 htab
->tls_ld_or_ldm_got
.offset
|= 1;
3338 relocation
= htab
->elf
.sgot
->output_section
->vma
3339 + htab
->elf
.sgot
->output_offset
+ off
3340 - htab
->elf
.sgotplt
->output_section
->vma
3341 - htab
->elf
.sgotplt
->output_offset
;
3342 unresolved_reloc
= FALSE
;
3345 case R_386_TLS_LDO_32
:
3346 if (!bfd_link_executable (info
)
3347 || (input_section
->flags
& SEC_CODE
) == 0)
3348 relocation
-= _bfd_x86_elf_dtpoff_base (info
);
3350 /* When converting LDO to LE, we must negate. */
3351 relocation
= -elf_i386_tpoff (info
, relocation
);
3354 case R_386_TLS_LE_32
:
3356 if (!bfd_link_executable (info
))
3358 Elf_Internal_Rela outrel
;
3361 outrel
.r_offset
= rel
->r_offset
3362 + input_section
->output_section
->vma
3363 + input_section
->output_offset
;
3364 if (h
!= NULL
&& h
->dynindx
!= -1)
3368 if (r_type
== R_386_TLS_LE_32
)
3369 outrel
.r_info
= ELF32_R_INFO (indx
, R_386_TLS_TPOFF32
);
3371 outrel
.r_info
= ELF32_R_INFO (indx
, R_386_TLS_TPOFF
);
3372 sreloc
= elf_section_data (input_section
)->sreloc
;
3375 elf_append_rel (output_bfd
, sreloc
, &outrel
);
3378 else if (r_type
== R_386_TLS_LE_32
)
3379 relocation
= _bfd_x86_elf_dtpoff_base (info
) - relocation
;
3381 relocation
-= _bfd_x86_elf_dtpoff_base (info
);
3383 else if (r_type
== R_386_TLS_LE_32
)
3384 relocation
= elf_i386_tpoff (info
, relocation
);
3386 relocation
= -elf_i386_tpoff (info
, relocation
);
3393 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3394 because such sections are not SEC_ALLOC and thus ld.so will
3395 not process them. */
3396 if (unresolved_reloc
3397 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
3399 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3400 rel
->r_offset
) != (bfd_vma
) -1)
3403 /* xgettext:c-format */
3404 (_("%pB(%pA+%#" PRIx64
"): unresolvable %s relocation against symbol `%s'"),
3407 (uint64_t) rel
->r_offset
,
3409 h
->root
.root
.string
);
3414 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3415 contents
, rel
->r_offset
,
3418 check_relocation_error
:
3419 if (r
!= bfd_reloc_ok
)
3424 name
= h
->root
.root
.string
;
3427 name
= bfd_elf_string_from_elf_section (input_bfd
,
3428 symtab_hdr
->sh_link
,
3433 name
= bfd_section_name (sec
);
3436 if (r
== bfd_reloc_overflow
)
3437 (*info
->callbacks
->reloc_overflow
)
3438 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3439 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
3443 /* xgettext:c-format */
3444 (_("%pB(%pA+%#" PRIx64
"): reloc against `%s': error %d"),
3445 input_bfd
, input_section
,
3446 (uint64_t) rel
->r_offset
, name
, (int) r
);
3457 Elf_Internal_Shdr
*rel_hdr
;
3458 size_t deleted
= rel
- wrel
;
3460 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
3461 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
3462 if (rel_hdr
->sh_size
== 0)
3464 /* It is too late to remove an empty reloc section. Leave
3466 ??? What is wrong with an empty section??? */
3467 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
3470 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
3471 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
3472 input_section
->reloc_count
-= deleted
;
3478 /* Finish up dynamic symbol handling. We set the contents of various
3479 dynamic sections here. */
3482 elf_i386_finish_dynamic_symbol (bfd
*output_bfd
,
3483 struct bfd_link_info
*info
,
3484 struct elf_link_hash_entry
*h
,
3485 Elf_Internal_Sym
*sym
)
3487 struct elf_x86_link_hash_table
*htab
;
3488 unsigned plt_entry_size
;
3489 struct elf_x86_link_hash_entry
*eh
;
3490 bfd_boolean local_undefweak
;
3491 bfd_boolean use_plt_second
;
3493 htab
= elf_x86_hash_table (info
, I386_ELF_DATA
);
3497 plt_entry_size
= htab
->plt
.plt_entry_size
;
3499 /* Use the second PLT section only if there is .plt section. */
3500 use_plt_second
= htab
->elf
.splt
!= NULL
&& htab
->plt_second
!= NULL
;
3502 eh
= (struct elf_x86_link_hash_entry
*) h
;
3503 if (eh
->no_finish_dynamic_symbol
)
3506 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
3507 resolved undefined weak symbols in executable so that their
3508 references have value 0 at run-time. */
3509 local_undefweak
= UNDEFINED_WEAK_RESOLVED_TO_ZERO (info
, eh
);
3511 if (h
->plt
.offset
!= (bfd_vma
) -1)
3513 bfd_vma plt_index
, plt_offset
;
3515 Elf_Internal_Rela rel
;
3517 asection
*plt
, *resolved_plt
, *gotplt
, *relplt
;
3519 /* When building a static executable, use .iplt, .igot.plt and
3520 .rel.iplt sections for STT_GNU_IFUNC symbols. */
3521 if (htab
->elf
.splt
!= NULL
)
3523 plt
= htab
->elf
.splt
;
3524 gotplt
= htab
->elf
.sgotplt
;
3525 relplt
= htab
->elf
.srelplt
;
3529 plt
= htab
->elf
.iplt
;
3530 gotplt
= htab
->elf
.igotplt
;
3531 relplt
= htab
->elf
.irelplt
;
3534 VERIFY_PLT_ENTRY (info
, h
, plt
, gotplt
, relplt
, local_undefweak
)
3536 /* Get the index in the procedure linkage table which
3537 corresponds to this symbol. This is the index of this symbol
3538 in all the symbols for which we are making plt entries. The
3539 first entry in the procedure linkage table is reserved.
3541 Get the offset into the .got table of the entry that
3542 corresponds to this function. Each .got entry is 4 bytes.
3543 The first three are reserved.
3545 For static executables, we don't reserve anything. */
3547 if (plt
== htab
->elf
.splt
)
3549 got_offset
= (h
->plt
.offset
/ plt_entry_size
3550 - htab
->plt
.has_plt0
);
3551 got_offset
= (got_offset
+ 3) * 4;
3555 got_offset
= h
->plt
.offset
/ plt_entry_size
;
3556 got_offset
= got_offset
* 4;
3559 /* Fill in the entry in the procedure linkage table and update
3561 memcpy (plt
->contents
+ h
->plt
.offset
, htab
->plt
.plt_entry
,
3566 const bfd_byte
*plt_entry
;
3567 if (bfd_link_pic (info
))
3568 plt_entry
= htab
->non_lazy_plt
->pic_plt_entry
;
3570 plt_entry
= htab
->non_lazy_plt
->plt_entry
;
3571 memcpy (htab
->plt_second
->contents
+ eh
->plt_second
.offset
,
3572 plt_entry
, htab
->non_lazy_plt
->plt_entry_size
);
3574 resolved_plt
= htab
->plt_second
;
3575 plt_offset
= eh
->plt_second
.offset
;
3580 plt_offset
= h
->plt
.offset
;
3583 if (! bfd_link_pic (info
))
3585 bfd_put_32 (output_bfd
,
3586 (gotplt
->output_section
->vma
3587 + gotplt
->output_offset
3589 resolved_plt
->contents
+ plt_offset
3590 + htab
->plt
.plt_got_offset
);
3592 if (htab
->elf
.target_os
== is_vxworks
)
3594 int s
, k
, reloc_index
;
3596 /* Create the R_386_32 relocation referencing the GOT
3597 for this PLT entry. */
3599 /* S: Current slot number (zero-based). */
3600 s
= ((h
->plt
.offset
- htab
->plt
.plt_entry_size
)
3601 / htab
->plt
.plt_entry_size
);
3602 /* K: Number of relocations for PLTResolve. */
3603 if (bfd_link_pic (info
))
3604 k
= PLTRESOLVE_RELOCS_SHLIB
;
3606 k
= PLTRESOLVE_RELOCS
;
3607 /* Skip the PLTresolve relocations, and the relocations for
3608 the other PLT slots. */
3609 reloc_index
= k
+ s
* PLT_NON_JUMP_SLOT_RELOCS
;
3610 loc
= (htab
->srelplt2
->contents
+ reloc_index
3611 * sizeof (Elf32_External_Rel
));
3613 rel
.r_offset
= (plt
->output_section
->vma
3614 + plt
->output_offset
3615 + h
->plt
.offset
+ 2),
3616 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_386_32
);
3617 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
3619 /* Create the R_386_32 relocation referencing the beginning of
3620 the PLT for this GOT entry. */
3621 rel
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
3622 + htab
->elf
.sgotplt
->output_offset
3624 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_386_32
);
3625 bfd_elf32_swap_reloc_out (output_bfd
, &rel
,
3626 loc
+ sizeof (Elf32_External_Rel
));
3631 bfd_put_32 (output_bfd
, got_offset
,
3632 resolved_plt
->contents
+ plt_offset
3633 + htab
->plt
.plt_got_offset
);
3636 /* Fill in the entry in the global offset table. Leave the entry
3637 as zero for undefined weak symbol in PIE. No PLT relocation
3638 against undefined weak symbol in PIE. */
3639 if (!local_undefweak
)
3641 if (htab
->plt
.has_plt0
)
3642 bfd_put_32 (output_bfd
,
3643 (plt
->output_section
->vma
3644 + plt
->output_offset
3646 + htab
->lazy_plt
->plt_lazy_offset
),
3647 gotplt
->contents
+ got_offset
);
3649 /* Fill in the entry in the .rel.plt section. */
3650 rel
.r_offset
= (gotplt
->output_section
->vma
3651 + gotplt
->output_offset
3653 if (PLT_LOCAL_IFUNC_P (info
, h
))
3655 info
->callbacks
->minfo (_("Local IFUNC function `%s' in %pB\n"),
3656 h
->root
.root
.string
,
3657 h
->root
.u
.def
.section
->owner
);
3659 /* If an STT_GNU_IFUNC symbol is locally defined, generate
3660 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
3661 in the .got.plt section. */
3662 bfd_put_32 (output_bfd
,
3663 (h
->root
.u
.def
.value
3664 + h
->root
.u
.def
.section
->output_section
->vma
3665 + h
->root
.u
.def
.section
->output_offset
),
3666 gotplt
->contents
+ got_offset
);
3667 rel
.r_info
= ELF32_R_INFO (0, R_386_IRELATIVE
);
3668 /* R_386_IRELATIVE comes last. */
3669 plt_index
= htab
->next_irelative_index
--;
3673 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_386_JUMP_SLOT
);
3674 plt_index
= htab
->next_jump_slot_index
++;
3677 loc
= relplt
->contents
+ plt_index
* sizeof (Elf32_External_Rel
);
3678 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
3680 /* Don't fill the second and third slots in PLT entry for
3681 static executables nor without PLT0. */
3682 if (plt
== htab
->elf
.splt
&& htab
->plt
.has_plt0
)
3684 bfd_put_32 (output_bfd
,
3685 plt_index
* sizeof (Elf32_External_Rel
),
3686 plt
->contents
+ h
->plt
.offset
3687 + htab
->lazy_plt
->plt_reloc_offset
);
3688 bfd_put_32 (output_bfd
,
3690 + htab
->lazy_plt
->plt_plt_offset
+ 4),
3691 (plt
->contents
+ h
->plt
.offset
3692 + htab
->lazy_plt
->plt_plt_offset
));
3696 else if (eh
->plt_got
.offset
!= (bfd_vma
) -1)
3698 bfd_vma got_offset
, plt_offset
;
3699 asection
*plt
, *got
, *gotplt
;
3700 const bfd_byte
*got_plt_entry
;
3702 /* Set the entry in the GOT procedure linkage table. */
3703 plt
= htab
->plt_got
;
3704 got
= htab
->elf
.sgot
;
3705 gotplt
= htab
->elf
.sgotplt
;
3706 got_offset
= h
->got
.offset
;
3708 if (got_offset
== (bfd_vma
) -1
3714 /* Fill in the entry in the GOT procedure linkage table. */
3715 if (! bfd_link_pic (info
))
3717 got_plt_entry
= htab
->non_lazy_plt
->plt_entry
;
3718 got_offset
+= got
->output_section
->vma
+ got
->output_offset
;
3722 got_plt_entry
= htab
->non_lazy_plt
->pic_plt_entry
;
3723 got_offset
+= (got
->output_section
->vma
3724 + got
->output_offset
3725 - gotplt
->output_section
->vma
3726 - gotplt
->output_offset
);
3729 plt_offset
= eh
->plt_got
.offset
;
3730 memcpy (plt
->contents
+ plt_offset
, got_plt_entry
,
3731 htab
->non_lazy_plt
->plt_entry_size
);
3732 bfd_put_32 (output_bfd
, got_offset
,
3733 (plt
->contents
+ plt_offset
3734 + htab
->non_lazy_plt
->plt_got_offset
));
3737 if (!local_undefweak
3739 && (h
->plt
.offset
!= (bfd_vma
) -1
3740 || eh
->plt_got
.offset
!= (bfd_vma
) -1))
3742 /* Mark the symbol as undefined, rather than as defined in
3743 the .plt section. Leave the value if there were any
3744 relocations where pointer equality matters (this is a clue
3745 for the dynamic linker, to make function pointer
3746 comparisons work between an application and shared
3747 library), otherwise set it to zero. If a function is only
3748 called from a binary, there is no need to slow down
3749 shared libraries because of that. */
3750 sym
->st_shndx
= SHN_UNDEF
;
3751 if (!h
->pointer_equality_needed
)
3755 _bfd_x86_elf_link_fixup_ifunc_symbol (info
, htab
, h
, sym
);
3757 /* Don't generate dynamic GOT relocation against undefined weak
3758 symbol in executable. */
3759 if (h
->got
.offset
!= (bfd_vma
) -1
3760 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry(h
)->tls_type
)
3761 && (elf_x86_hash_entry(h
)->tls_type
& GOT_TLS_IE
) == 0
3762 && !local_undefweak
)
3764 Elf_Internal_Rela rel
;
3765 asection
*relgot
= htab
->elf
.srelgot
;
3767 /* This symbol has an entry in the global offset table. Set it
3770 if (htab
->elf
.sgot
== NULL
|| htab
->elf
.srelgot
== NULL
)
3773 rel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
3774 + htab
->elf
.sgot
->output_offset
3775 + (h
->got
.offset
& ~(bfd_vma
) 1));
3777 /* If this is a static link, or it is a -Bsymbolic link and the
3778 symbol is defined locally or was forced to be local because
3779 of a version file, we just want to emit a RELATIVE reloc.
3780 The entry in the global offset table will already have been
3781 initialized in the relocate_section function. */
3783 && h
->type
== STT_GNU_IFUNC
)
3785 if (h
->plt
.offset
== (bfd_vma
) -1)
3787 /* STT_GNU_IFUNC is referenced without PLT. */
3788 if (htab
->elf
.splt
== NULL
)
3790 /* use .rel[a].iplt section to store .got relocations
3791 in static executable. */
3792 relgot
= htab
->elf
.irelplt
;
3794 if (SYMBOL_REFERENCES_LOCAL_P (info
, h
))
3796 info
->callbacks
->minfo (_("Local IFUNC function `%s' in %pB\n"),
3797 h
->root
.root
.string
,
3798 h
->root
.u
.def
.section
->owner
);
3800 bfd_put_32 (output_bfd
,
3801 (h
->root
.u
.def
.value
3802 + h
->root
.u
.def
.section
->output_section
->vma
3803 + h
->root
.u
.def
.section
->output_offset
),
3804 htab
->elf
.sgot
->contents
+ h
->got
.offset
);
3805 rel
.r_info
= ELF32_R_INFO (0, R_386_IRELATIVE
);
3810 else if (bfd_link_pic (info
))
3812 /* Generate R_386_GLOB_DAT. */
3820 if (!h
->pointer_equality_needed
)
3823 /* For non-shared object, we can't use .got.plt, which
3824 contains the real function addres if we need pointer
3825 equality. We load the GOT entry with the PLT entry. */
3826 if (htab
->plt_second
!= NULL
)
3828 plt
= htab
->plt_second
;
3829 plt_offset
= eh
->plt_second
.offset
;
3833 plt
= htab
->elf
.splt
? htab
->elf
.splt
: htab
->elf
.iplt
;
3834 plt_offset
= h
->plt
.offset
;
3836 bfd_put_32 (output_bfd
,
3837 (plt
->output_section
->vma
3838 + plt
->output_offset
+ plt_offset
),
3839 htab
->elf
.sgot
->contents
+ h
->got
.offset
);
3843 else if (bfd_link_pic (info
)
3844 && SYMBOL_REFERENCES_LOCAL_P (info
, h
))
3846 BFD_ASSERT((h
->got
.offset
& 1) != 0);
3847 rel
.r_info
= ELF32_R_INFO (0, R_386_RELATIVE
);
3851 BFD_ASSERT((h
->got
.offset
& 1) == 0);
3853 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
3854 htab
->elf
.sgot
->contents
+ h
->got
.offset
);
3855 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_386_GLOB_DAT
);
3858 elf_append_rel (output_bfd
, relgot
, &rel
);
3863 Elf_Internal_Rela rel
;
3866 /* This symbol needs a copy reloc. Set it up. */
3867 VERIFY_COPY_RELOC (h
, htab
)
3869 rel
.r_offset
= (h
->root
.u
.def
.value
3870 + h
->root
.u
.def
.section
->output_section
->vma
3871 + h
->root
.u
.def
.section
->output_offset
);
3872 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_386_COPY
);
3873 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
3874 s
= htab
->elf
.sreldynrelro
;
3876 s
= htab
->elf
.srelbss
;
3877 elf_append_rel (output_bfd
, s
, &rel
);
3883 /* Finish up local dynamic symbol handling. We set the contents of
3884 various dynamic sections here. */
3887 elf_i386_finish_local_dynamic_symbol (void **slot
, void *inf
)
3889 struct elf_link_hash_entry
*h
3890 = (struct elf_link_hash_entry
*) *slot
;
3891 struct bfd_link_info
*info
3892 = (struct bfd_link_info
*) inf
;
3894 return elf_i386_finish_dynamic_symbol (info
->output_bfd
, info
,
3898 /* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
3899 here since undefined weak symbol may not be dynamic and may not be
3900 called for elf_i386_finish_dynamic_symbol. */
3903 elf_i386_pie_finish_undefweak_symbol (struct bfd_hash_entry
*bh
,
3906 struct elf_link_hash_entry
*h
= (struct elf_link_hash_entry
*) bh
;
3907 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
3909 if (h
->root
.type
!= bfd_link_hash_undefweak
3910 || h
->dynindx
!= -1)
3913 return elf_i386_finish_dynamic_symbol (info
->output_bfd
,
3917 /* Used to decide how to sort relocs in an optimal manner for the
3918 dynamic linker, before writing them out. */
3920 static enum elf_reloc_type_class
3921 elf_i386_reloc_type_class (const struct bfd_link_info
*info
,
3922 const asection
*rel_sec ATTRIBUTE_UNUSED
,
3923 const Elf_Internal_Rela
*rela
)
3925 bfd
*abfd
= info
->output_bfd
;
3926 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3927 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
3929 if (htab
->dynsym
!= NULL
3930 && htab
->dynsym
->contents
!= NULL
)
3932 /* Check relocation against STT_GNU_IFUNC symbol if there are
3934 unsigned long r_symndx
= ELF32_R_SYM (rela
->r_info
);
3935 if (r_symndx
!= STN_UNDEF
)
3937 Elf_Internal_Sym sym
;
3938 if (!bed
->s
->swap_symbol_in (abfd
,
3939 (htab
->dynsym
->contents
3940 + r_symndx
* sizeof (Elf32_External_Sym
)),
3944 if (ELF32_ST_TYPE (sym
.st_info
) == STT_GNU_IFUNC
)
3945 return reloc_class_ifunc
;
3949 switch (ELF32_R_TYPE (rela
->r_info
))
3951 case R_386_IRELATIVE
:
3952 return reloc_class_ifunc
;
3953 case R_386_RELATIVE
:
3954 return reloc_class_relative
;
3955 case R_386_JUMP_SLOT
:
3956 return reloc_class_plt
;
3958 return reloc_class_copy
;
3960 return reloc_class_normal
;
3964 /* Finish up the dynamic sections. */
3967 elf_i386_finish_dynamic_sections (bfd
*output_bfd
,
3968 struct bfd_link_info
*info
)
3970 struct elf_x86_link_hash_table
*htab
;
3972 htab
= _bfd_x86_elf_finish_dynamic_sections (output_bfd
, info
);
3976 if (!htab
->elf
.dynamic_sections_created
)
3979 if (htab
->elf
.splt
&& htab
->elf
.splt
->size
> 0)
3981 /* UnixWare sets the entsize of .plt to 4, although that doesn't
3982 really seem like the right value. */
3983 elf_section_data (htab
->elf
.splt
->output_section
)
3984 ->this_hdr
.sh_entsize
= 4;
3986 if (htab
->plt
.has_plt0
)
3988 /* Fill in the special first entry in the procedure linkage
3990 memcpy (htab
->elf
.splt
->contents
, htab
->plt
.plt0_entry
,
3991 htab
->lazy_plt
->plt0_entry_size
);
3992 memset (htab
->elf
.splt
->contents
+ htab
->lazy_plt
->plt0_entry_size
,
3993 htab
->plt0_pad_byte
,
3994 htab
->plt
.plt_entry_size
- htab
->lazy_plt
->plt0_entry_size
);
3995 if (!bfd_link_pic (info
))
3997 bfd_put_32 (output_bfd
,
3998 (htab
->elf
.sgotplt
->output_section
->vma
3999 + htab
->elf
.sgotplt
->output_offset
4001 htab
->elf
.splt
->contents
4002 + htab
->lazy_plt
->plt0_got1_offset
);
4003 bfd_put_32 (output_bfd
,
4004 (htab
->elf
.sgotplt
->output_section
->vma
4005 + htab
->elf
.sgotplt
->output_offset
4007 htab
->elf
.splt
->contents
4008 + htab
->lazy_plt
->plt0_got2_offset
);
4010 if (htab
->elf
.target_os
== is_vxworks
)
4012 Elf_Internal_Rela rel
;
4013 int num_plts
= (htab
->elf
.splt
->size
4014 / htab
->plt
.plt_entry_size
) - 1;
4016 asection
*srelplt2
= htab
->srelplt2
;
4018 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_
4019 + 4. On IA32 we use REL relocations so the
4020 addend goes in the PLT directly. */
4021 rel
.r_offset
= (htab
->elf
.splt
->output_section
->vma
4022 + htab
->elf
.splt
->output_offset
4023 + htab
->lazy_plt
->plt0_got1_offset
);
4024 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
4026 bfd_elf32_swap_reloc_out (output_bfd
, &rel
,
4027 srelplt2
->contents
);
4028 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_
4030 rel
.r_offset
= (htab
->elf
.splt
->output_section
->vma
4031 + htab
->elf
.splt
->output_offset
4032 + htab
->lazy_plt
->plt0_got2_offset
);
4033 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
4035 bfd_elf32_swap_reloc_out (output_bfd
, &rel
,
4036 srelplt2
->contents
+
4037 sizeof (Elf32_External_Rel
));
4038 /* Correct the .rel.plt.unloaded relocations. */
4039 p
= srelplt2
->contents
;
4040 if (bfd_link_pic (info
))
4041 p
+= PLTRESOLVE_RELOCS_SHLIB
* sizeof (Elf32_External_Rel
);
4043 p
+= PLTRESOLVE_RELOCS
* sizeof (Elf32_External_Rel
);
4045 for (; num_plts
; num_plts
--)
4047 bfd_elf32_swap_reloc_in (output_bfd
, p
, &rel
);
4048 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
4050 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, p
);
4051 p
+= sizeof (Elf32_External_Rel
);
4053 bfd_elf32_swap_reloc_in (output_bfd
, p
, &rel
);
4054 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
4056 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, p
);
4057 p
+= sizeof (Elf32_External_Rel
);
4064 /* Fill PLT entries for undefined weak symbols in PIE. */
4065 if (bfd_link_pie (info
))
4066 bfd_hash_traverse (&info
->hash
->table
,
4067 elf_i386_pie_finish_undefweak_symbol
,
4073 /* Fill PLT/GOT entries and allocate dynamic relocations for local
4074 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4075 It has to be done before elf_link_sort_relocs is called so that
4076 dynamic relocations are properly sorted. */
4079 elf_i386_output_arch_local_syms
4080 (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4081 struct bfd_link_info
*info
,
4082 void *flaginfo ATTRIBUTE_UNUSED
,
4083 int (*func
) (void *, const char *,
4086 struct elf_link_hash_entry
*) ATTRIBUTE_UNUSED
)
4088 struct elf_x86_link_hash_table
*htab
4089 = elf_x86_hash_table (info
, I386_ELF_DATA
);
4093 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4094 htab_traverse (htab
->loc_hash_table
,
4095 elf_i386_finish_local_dynamic_symbol
,
4101 /* Forward declaration. */
4102 static const struct elf_x86_lazy_plt_layout elf_i386_nacl_plt
;
4104 /* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4105 dynamic relocations. */
4108 elf_i386_get_synthetic_symtab (bfd
*abfd
,
4109 long symcount ATTRIBUTE_UNUSED
,
4110 asymbol
**syms ATTRIBUTE_UNUSED
,
4117 bfd_byte
*plt_contents
;
4119 const struct elf_x86_lazy_plt_layout
*lazy_plt
;
4120 const struct elf_x86_non_lazy_plt_layout
*non_lazy_plt
;
4121 const struct elf_x86_lazy_plt_layout
*lazy_ibt_plt
;
4122 const struct elf_x86_non_lazy_plt_layout
*non_lazy_ibt_plt
;
4125 enum elf_x86_plt_type plt_type
;
4126 struct elf_x86_plt plts
[] =
4128 { ".plt", NULL
, NULL
, plt_unknown
, 0, 0, 0, 0 },
4129 { ".plt.got", NULL
, NULL
, plt_non_lazy
, 0, 0, 0, 0 },
4130 { ".plt.sec", NULL
, NULL
, plt_second
, 0, 0, 0, 0 },
4131 { NULL
, NULL
, NULL
, plt_non_lazy
, 0, 0, 0, 0 }
4136 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
4139 if (dynsymcount
<= 0)
4142 relsize
= bfd_get_dynamic_reloc_upper_bound (abfd
);
4146 non_lazy_plt
= NULL
;
4147 /* Silence GCC 6. */
4149 non_lazy_ibt_plt
= NULL
;
4150 lazy_ibt_plt
= NULL
;
4151 switch (get_elf_backend_data (abfd
)->target_os
)
4155 non_lazy_plt
= &elf_i386_non_lazy_plt
;
4156 lazy_ibt_plt
= &elf_i386_lazy_ibt_plt
;
4157 non_lazy_ibt_plt
= &elf_i386_non_lazy_ibt_plt
;
4160 lazy_plt
= &elf_i386_lazy_plt
;
4163 lazy_plt
= &elf_i386_nacl_plt
;
4172 for (j
= 0; plts
[j
].name
!= NULL
; j
++)
4174 plt
= bfd_get_section_by_name (abfd
, plts
[j
].name
);
4175 if (plt
== NULL
|| plt
->size
== 0)
4178 /* Get the PLT section contents. */
4179 plt_contents
= (bfd_byte
*) bfd_malloc (plt
->size
);
4180 if (plt_contents
== NULL
)
4182 if (!bfd_get_section_contents (abfd
, (asection
*) plt
,
4183 plt_contents
, 0, plt
->size
))
4185 free (plt_contents
);
4189 /* Check what kind of PLT it is. */
4190 plt_type
= plt_unknown
;
4191 if (plts
[j
].type
== plt_unknown
4192 && (plt
->size
>= (lazy_plt
->plt0_entry_size
4193 + lazy_plt
->plt_entry_size
)))
4195 /* Match lazy PLT first. */
4196 if (memcmp (plt_contents
, lazy_plt
->plt0_entry
,
4197 lazy_plt
->plt0_got1_offset
) == 0)
4199 /* The fist entry in the lazy IBT PLT is the same as the
4201 if (lazy_ibt_plt
!= NULL
4202 && (memcmp (plt_contents
+ lazy_ibt_plt
->plt0_entry_size
,
4203 lazy_ibt_plt
->plt_entry
,
4204 lazy_ibt_plt
->plt_got_offset
) == 0))
4205 plt_type
= plt_lazy
| plt_second
;
4207 plt_type
= plt_lazy
;
4209 else if (memcmp (plt_contents
, lazy_plt
->pic_plt0_entry
,
4210 lazy_plt
->plt0_got1_offset
) == 0)
4212 /* The fist entry in the PIC lazy IBT PLT is the same as
4213 the normal PIC lazy PLT. */
4214 if (lazy_ibt_plt
!= NULL
4215 && (memcmp (plt_contents
+ lazy_ibt_plt
->plt0_entry_size
,
4216 lazy_ibt_plt
->pic_plt_entry
,
4217 lazy_ibt_plt
->plt_got_offset
) == 0))
4218 plt_type
= plt_lazy
| plt_pic
| plt_second
;
4220 plt_type
= plt_lazy
| plt_pic
;
4224 if (non_lazy_plt
!= NULL
4225 && (plt_type
== plt_unknown
|| plt_type
== plt_non_lazy
)
4226 && plt
->size
>= non_lazy_plt
->plt_entry_size
)
4228 /* Match non-lazy PLT. */
4229 if (memcmp (plt_contents
, non_lazy_plt
->plt_entry
,
4230 non_lazy_plt
->plt_got_offset
) == 0)
4231 plt_type
= plt_non_lazy
;
4232 else if (memcmp (plt_contents
, non_lazy_plt
->pic_plt_entry
,
4233 non_lazy_plt
->plt_got_offset
) == 0)
4237 if ((non_lazy_ibt_plt
!= NULL
)
4238 && (plt_type
== plt_unknown
|| plt_type
== plt_second
)
4239 && plt
->size
>= non_lazy_ibt_plt
->plt_entry_size
)
4241 if (memcmp (plt_contents
,
4242 non_lazy_ibt_plt
->plt_entry
,
4243 non_lazy_ibt_plt
->plt_got_offset
) == 0)
4245 /* Match IBT PLT. */
4246 plt_type
= plt_second
;
4247 non_lazy_plt
= non_lazy_ibt_plt
;
4249 else if (memcmp (plt_contents
,
4250 non_lazy_ibt_plt
->pic_plt_entry
,
4251 non_lazy_ibt_plt
->plt_got_offset
) == 0)
4253 /* Match PIC IBT PLT. */
4254 plt_type
= plt_second
| plt_pic
;
4255 non_lazy_plt
= non_lazy_ibt_plt
;
4259 if (plt_type
== plt_unknown
)
4261 free (plt_contents
);
4266 plts
[j
].type
= plt_type
;
4268 if ((plt_type
& plt_lazy
))
4270 plts
[j
].plt_got_offset
= lazy_plt
->plt_got_offset
;
4271 plts
[j
].plt_entry_size
= lazy_plt
->plt_entry_size
;
4272 /* Skip PLT0 in lazy PLT. */
4277 plts
[j
].plt_got_offset
= non_lazy_plt
->plt_got_offset
;
4278 plts
[j
].plt_entry_size
= non_lazy_plt
->plt_entry_size
;
4282 /* Skip lazy PLT when the second PLT is used. */
4283 if ((plt_type
& (plt_lazy
| plt_second
))
4284 == (plt_lazy
| plt_second
))
4288 n
= plt
->size
/ plts
[j
].plt_entry_size
;
4293 plts
[j
].contents
= plt_contents
;
4295 /* The _GLOBAL_OFFSET_TABLE_ address is needed. */
4296 if ((plt_type
& plt_pic
))
4297 got_addr
= (bfd_vma
) -1;
4300 return _bfd_x86_elf_get_synthetic_symtab (abfd
, count
, relsize
,
4301 got_addr
, plts
, dynsyms
,
4305 /* Set up i386 GNU properties. Return the first relocatable ELF input
4306 with GNU properties if found. Otherwise, return NULL. */
4309 elf_i386_link_setup_gnu_properties (struct bfd_link_info
*info
)
4311 struct elf_x86_init_table init_table
;
4313 switch (get_elf_backend_data (info
->output_bfd
)->target_os
)
4317 init_table
.plt0_pad_byte
= 0x0;
4318 init_table
.lazy_plt
= &elf_i386_lazy_plt
;
4319 init_table
.non_lazy_plt
= &elf_i386_non_lazy_plt
;
4320 init_table
.lazy_ibt_plt
= &elf_i386_lazy_ibt_plt
;
4321 init_table
.non_lazy_ibt_plt
= &elf_i386_non_lazy_ibt_plt
;
4324 init_table
.plt0_pad_byte
= 0x90;
4325 init_table
.lazy_plt
= &elf_i386_lazy_plt
;
4326 init_table
.non_lazy_plt
= NULL
;
4327 init_table
.lazy_ibt_plt
= NULL
;
4328 init_table
.non_lazy_ibt_plt
= NULL
;
4331 init_table
.plt0_pad_byte
= 0x90;
4332 init_table
.lazy_plt
= &elf_i386_nacl_plt
;
4333 init_table
.non_lazy_plt
= NULL
;
4334 init_table
.lazy_ibt_plt
= NULL
;
4335 init_table
.non_lazy_ibt_plt
= NULL
;
4341 init_table
.r_info
= elf32_r_info
;
4342 init_table
.r_sym
= elf32_r_sym
;
4344 return _bfd_x86_elf_link_setup_gnu_properties (info
, &init_table
);
4347 #define TARGET_LITTLE_SYM i386_elf32_vec
4348 #define TARGET_LITTLE_NAME "elf32-i386"
4349 #define ELF_ARCH bfd_arch_i386
4350 #define ELF_TARGET_ID I386_ELF_DATA
4351 #define ELF_MACHINE_CODE EM_386
4352 #define ELF_MAXPAGESIZE 0x1000
4354 #define elf_backend_can_gc_sections 1
4355 #define elf_backend_can_refcount 1
4356 #define elf_backend_want_got_plt 1
4357 #define elf_backend_plt_readonly 1
4358 #define elf_backend_want_plt_sym 0
4359 #define elf_backend_got_header_size 12
4360 #define elf_backend_plt_alignment 4
4361 #define elf_backend_dtrel_excludes_plt 1
4362 #define elf_backend_extern_protected_data 1
4363 #define elf_backend_caches_rawsize 1
4364 #define elf_backend_want_dynrelro 1
4366 /* Support RELA for objdump of prelink objects. */
4367 #define elf_info_to_howto elf_i386_info_to_howto_rel
4368 #define elf_info_to_howto_rel elf_i386_info_to_howto_rel
4370 #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
4371 #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
4372 #define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
4373 #define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
4375 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4376 #define elf_backend_check_relocs elf_i386_check_relocs
4377 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
4378 #define elf_backend_fake_sections elf_i386_fake_sections
4379 #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
4380 #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
4381 #define elf_backend_output_arch_local_syms elf_i386_output_arch_local_syms
4382 #define elf_backend_grok_prstatus elf_i386_grok_prstatus
4383 #define elf_backend_grok_psinfo elf_i386_grok_psinfo
4384 #define elf_backend_reloc_type_class elf_i386_reloc_type_class
4385 #define elf_backend_relocate_section elf_i386_relocate_section
4386 #define elf_backend_setup_gnu_properties elf_i386_link_setup_gnu_properties
4387 #define elf_backend_hide_symbol _bfd_x86_elf_hide_symbol
4389 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
4391 #define elf32_bed elf32_i386_bed
4393 #include "elf32-target.h"
4395 /* FreeBSD support. */
4397 #undef TARGET_LITTLE_SYM
4398 #define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
4399 #undef TARGET_LITTLE_NAME
4400 #define TARGET_LITTLE_NAME "elf32-i386-freebsd"
4402 #define ELF_OSABI ELFOSABI_FREEBSD
4404 /* The kernel recognizes executables as valid only if they carry a
4405 "FreeBSD" label in the ELF header. So we put this label on all
4406 executables and (for simplicity) also all other object files. */
4409 elf_i386_fbsd_init_file_header (bfd
*abfd
, struct bfd_link_info
*info
)
4411 if (!_bfd_elf_init_file_header (abfd
, info
))
4414 #ifdef OLD_FREEBSD_ABI_LABEL
4416 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
4417 Elf_Internal_Ehdr
*i_ehdrp
= elf_elfheader (abfd
);
4418 memcpy (&i_ehdrp
->e_ident
[EI_ABIVERSION
], "FreeBSD", 8);
4424 #undef elf_backend_init_file_header
4425 #define elf_backend_init_file_header elf_i386_fbsd_init_file_header
4427 #define elf32_bed elf32_i386_fbsd_bed
4429 #undef elf_backend_add_symbol_hook
4431 #include "elf32-target.h"
4433 #undef elf_backend_init_file_header
4437 #undef TARGET_LITTLE_SYM
4438 #define TARGET_LITTLE_SYM i386_elf32_sol2_vec
4439 #undef TARGET_LITTLE_NAME
4440 #define TARGET_LITTLE_NAME "elf32-i386-sol2"
4442 #undef ELF_TARGET_OS
4443 #define ELF_TARGET_OS is_solaris
4445 /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
4446 objects won't be recognized. */
4450 #define elf32_bed elf32_i386_sol2_bed
4452 /* The 32-bit static TLS arena size is rounded to the nearest 8-byte
4454 #undef elf_backend_static_tls_alignment
4455 #define elf_backend_static_tls_alignment 8
4457 /* The Solaris 2 ABI requires a plt symbol on all platforms.
4459 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
4461 #undef elf_backend_want_plt_sym
4462 #define elf_backend_want_plt_sym 1
4464 #undef elf_backend_strtab_flags
4465 #define elf_backend_strtab_flags SHF_STRINGS
4467 /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
4468 has a type >= SHT_LOOS. Returns TRUE if these fields were initialised
4469 FALSE otherwise. ISECTION is the best guess matching section from the
4470 input bfd IBFD, but it might be NULL. */
4473 elf32_i386_copy_solaris_special_section_fields (const bfd
*ibfd ATTRIBUTE_UNUSED
,
4474 bfd
*obfd ATTRIBUTE_UNUSED
,
4475 const Elf_Internal_Shdr
*isection ATTRIBUTE_UNUSED
,
4476 Elf_Internal_Shdr
*osection ATTRIBUTE_UNUSED
)
4478 /* PR 19938: FIXME: Need to add code for setting the sh_info
4479 and sh_link fields of Solaris specific section types. */
4482 /* Based upon Oracle Solaris 11.3 Linkers and Libraries Guide, Ch. 13,
4483 Object File Format, Table 13-9 ELF sh_link and sh_info Interpretation:
4485 http://docs.oracle.com/cd/E53394_01/html/E54813/chapter6-94076.html#scrolltoc
4487 The following values should be set:
4490 -----------------------------------------------------------------------------
4491 SHT_SUNW_ancillary The section header index of 0
4492 [0x6fffffee] the associated string table.
4494 SHT_SUNW_capinfo The section header index of For a dynamic object, the
4495 [0x6ffffff0] the associated symbol table. section header index of
4497 SHT_SUNW_capchain table,
4500 SHT_SUNW_symsort The section header index of 0
4501 [0x6ffffff1] the associated symbol table.
4503 SHT_SUNW_tlssort The section header index of 0
4504 [0x6ffffff2] the associated symbol table.
4506 SHT_SUNW_LDYNSYM The section header index of One greater than the
4507 [0x6ffffff3] the associated string table. symbol table index of the
4508 This index is the same string last local symbol,
4509 table used by the SHT_DYNSYM STB_LOCAL. Since
4510 section. SHT_SUNW_LDYNSYM only
4511 contains local symbols,
4512 sh_info is equivalent to
4513 the number of symbols in
4516 SHT_SUNW_cap If symbol capabilities exist, If any capabilities refer
4517 [0x6ffffff5] the section header index of to named strings, the
4518 the associated section header index of
4519 SHT_SUNW_capinfo table, the associated string
4520 otherwise 0. table, otherwise 0.
4522 SHT_SUNW_move The section header index of 0
4523 [0x6ffffffa] the associated symbol table.
4528 SHT_SUNW_syminfo The section header index of The section header index
4529 [0x6ffffffc] the associated symbol table. of the associated
4532 SHT_SUNW_verdef The section header index of The number of version
4533 [0x6ffffffd] the associated string table. definitions within the
4536 SHT_SUNW_verneed The section header index of The number of version
4537 [0x6ffffffe] the associated string table. dependencies within the
4540 SHT_SUNW_versym The section header index of 0
4541 [0x6fffffff] the associated symbol table. */
4544 #undef elf_backend_copy_special_section_fields
4545 #define elf_backend_copy_special_section_fields elf32_i386_copy_solaris_special_section_fields
4547 #include "elf32-target.h"
4549 /* Intel MCU support. */
4552 elf32_iamcu_elf_object_p (bfd
*abfd
)
4554 /* Set the right machine number for an IAMCU elf32 file. */
4555 bfd_default_set_arch_mach (abfd
, bfd_arch_iamcu
, bfd_mach_i386_iamcu
);
4559 #undef TARGET_LITTLE_SYM
4560 #define TARGET_LITTLE_SYM iamcu_elf32_vec
4561 #undef TARGET_LITTLE_NAME
4562 #define TARGET_LITTLE_NAME "elf32-iamcu"
4564 #define ELF_ARCH bfd_arch_iamcu
4566 #undef ELF_MACHINE_CODE
4567 #define ELF_MACHINE_CODE EM_IAMCU
4569 #undef ELF_TARGET_OS
4573 #define elf32_bed elf32_iamcu_bed
4575 #undef elf_backend_object_p
4576 #define elf_backend_object_p elf32_iamcu_elf_object_p
4578 #undef elf_backend_static_tls_alignment
4580 #undef elf_backend_want_plt_sym
4581 #define elf_backend_want_plt_sym 0
4583 #undef elf_backend_strtab_flags
4584 #undef elf_backend_copy_special_section_fields
4586 #include "elf32-target.h"
4588 /* Restore defaults. */
4590 #define ELF_ARCH bfd_arch_i386
4591 #undef ELF_MACHINE_CODE
4592 #define ELF_MACHINE_CODE EM_386
4594 /* Native Client support. */
4596 #undef TARGET_LITTLE_SYM
4597 #define TARGET_LITTLE_SYM i386_elf32_nacl_vec
4598 #undef TARGET_LITTLE_NAME
4599 #define TARGET_LITTLE_NAME "elf32-i386-nacl"
4601 #define elf32_bed elf32_i386_nacl_bed
4603 #undef ELF_MAXPAGESIZE
4604 #define ELF_MAXPAGESIZE 0x10000
4606 /* Restore defaults. */
4608 #undef elf_backend_want_plt_sym
4609 #define elf_backend_want_plt_sym 0
4610 #undef elf_backend_static_tls_alignment
4612 /* NaCl uses substantially different PLT entries for the same effects. */
4614 #undef elf_backend_plt_alignment
4615 #define elf_backend_plt_alignment 5
4616 #define NACL_PLT_ENTRY_SIZE 64
4617 #define NACLMASK 0xe0 /* 32-byte alignment mask. */
4619 static const bfd_byte elf_i386_nacl_plt0_entry
[] =
4621 0xff, 0x35, /* pushl contents of address */
4622 0, 0, 0, 0, /* replaced with address of .got + 4. */
4623 0x8b, 0x0d, /* movl contents of address, %ecx */
4624 0, 0, 0, 0, /* replaced with address of .got + 8. */
4625 0x83, 0xe1, NACLMASK
, /* andl $NACLMASK, %ecx */
4626 0xff, 0xe1 /* jmp *%ecx */
4629 static const bfd_byte elf_i386_nacl_plt_entry
[NACL_PLT_ENTRY_SIZE
] =
4631 0x8b, 0x0d, /* movl contents of address, %ecx */
4632 0, 0, 0, 0, /* replaced with GOT slot address. */
4633 0x83, 0xe1, NACLMASK
, /* andl $NACLMASK, %ecx */
4634 0xff, 0xe1, /* jmp *%ecx */
4636 /* Pad to the next 32-byte boundary with nop instructions. */
4638 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4639 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4641 /* Lazy GOT entries point here (32-byte aligned). */
4642 0x68, /* pushl immediate */
4643 0, 0, 0, 0, /* replaced with reloc offset. */
4644 0xe9, /* jmp relative */
4645 0, 0, 0, 0, /* replaced with offset to .plt. */
4647 /* Pad to the next 32-byte boundary with nop instructions. */
4648 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4649 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4653 static const bfd_byte
4654 elf_i386_nacl_pic_plt0_entry
[sizeof (elf_i386_nacl_plt0_entry
)] =
4656 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
4657 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
4658 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
4659 0xff, 0xe1, /* jmp *%ecx */
4661 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
4662 so pad to that size with nop instructions. */
4663 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
4666 static const bfd_byte elf_i386_nacl_pic_plt_entry
[NACL_PLT_ENTRY_SIZE
] =
4668 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
4669 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
4670 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
4671 0xff, 0xe1, /* jmp *%ecx */
4673 /* Pad to the next 32-byte boundary with nop instructions. */
4675 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4676 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4678 /* Lazy GOT entries point here (32-byte aligned). */
4679 0x68, /* pushl immediate */
4680 0, 0, 0, 0, /* replaced with offset into relocation table. */
4681 0xe9, /* jmp relative */
4682 0, 0, 0, 0, /* replaced with offset to start of .plt. */
4684 /* Pad to the next 32-byte boundary with nop instructions. */
4685 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4686 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4690 static const bfd_byte elf_i386_nacl_eh_frame_plt
[] =
4692 #if (PLT_CIE_LENGTH != 20 \
4693 || PLT_FDE_LENGTH != 36 \
4694 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
4695 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
4696 # error "Need PLT_CIE_LENGTH parameters for eh_frame_plt offsets!"
4698 PLT_CIE_LENGTH
, 0, 0, 0, /* CIE length */
4699 0, 0, 0, 0, /* CIE ID */
4700 1, /* CIE version */
4701 'z', 'R', 0, /* Augmentation string */
4702 1, /* Code alignment factor */
4703 0x7c, /* Data alignment factor: -4 */
4704 8, /* Return address column */
4705 1, /* Augmentation size */
4706 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding */
4707 DW_CFA_def_cfa
, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
4708 DW_CFA_offset
+ 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
4709 DW_CFA_nop
, DW_CFA_nop
,
4711 PLT_FDE_LENGTH
, 0, 0, 0, /* FDE length */
4712 PLT_CIE_LENGTH
+ 8, 0, 0, 0, /* CIE pointer */
4713 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
4714 0, 0, 0, 0, /* .plt size goes here */
4715 0, /* Augmentation size */
4716 DW_CFA_def_cfa_offset
, 8, /* DW_CFA_def_cfa_offset: 8 */
4717 DW_CFA_advance_loc
+ 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
4718 DW_CFA_def_cfa_offset
, 12, /* DW_CFA_def_cfa_offset: 12 */
4719 DW_CFA_advance_loc
+ 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
4720 DW_CFA_def_cfa_expression
, /* DW_CFA_def_cfa_expression */
4721 13, /* Block length */
4722 DW_OP_breg4
, 4, /* DW_OP_breg4 (esp): 4 */
4723 DW_OP_breg8
, 0, /* DW_OP_breg8 (eip): 0 */
4724 DW_OP_const1u
, 63, DW_OP_and
, DW_OP_const1u
, 37, DW_OP_ge
,
4725 DW_OP_lit2
, DW_OP_shl
, DW_OP_plus
,
4726 DW_CFA_nop
, DW_CFA_nop
4729 static const struct elf_x86_lazy_plt_layout elf_i386_nacl_plt
=
4731 elf_i386_nacl_plt0_entry
, /* plt0_entry */
4732 sizeof (elf_i386_nacl_plt0_entry
), /* plt0_entry_size */
4733 elf_i386_nacl_plt_entry
, /* plt_entry */
4734 NACL_PLT_ENTRY_SIZE
, /* plt_entry_size */
4735 NULL
, /* plt_tlsdesc_entry */
4736 0, /* plt_tlsdesc_entry_size*/
4737 0, /* plt_tlsdesc_got1_offset */
4738 0, /* plt_tlsdesc_got2_offset */
4739 0, /* plt_tlsdesc_got1_insn_end */
4740 0, /* plt_tlsdesc_got2_insn_end */
4741 2, /* plt0_got1_offset */
4742 8, /* plt0_got2_offset */
4743 0, /* plt0_got2_insn_end */
4744 2, /* plt_got_offset */
4745 33, /* plt_reloc_offset */
4746 38, /* plt_plt_offset */
4747 0, /* plt_got_insn_size */
4748 0, /* plt_plt_insn_end */
4749 32, /* plt_lazy_offset */
4750 elf_i386_nacl_pic_plt0_entry
, /* pic_plt0_entry */
4751 elf_i386_nacl_pic_plt_entry
, /* pic_plt_entry */
4752 elf_i386_nacl_eh_frame_plt
, /* eh_frame_plt */
4753 sizeof (elf_i386_nacl_eh_frame_plt
) /* eh_frame_plt_size */
4757 elf32_i386_nacl_elf_object_p (bfd
*abfd
)
4759 /* Set the right machine number for a NaCl i386 ELF32 file. */
4760 bfd_default_set_arch_mach (abfd
, bfd_arch_i386
, bfd_mach_i386_i386_nacl
);
4764 #undef ELF_TARGET_OS
4765 #define ELF_TARGET_OS is_nacl
4767 #undef elf_backend_object_p
4768 #define elf_backend_object_p elf32_i386_nacl_elf_object_p
4769 #undef elf_backend_modify_segment_map
4770 #define elf_backend_modify_segment_map nacl_modify_segment_map
4771 #undef elf_backend_modify_headers
4772 #define elf_backend_modify_headers nacl_modify_headers
4773 #undef elf_backend_final_write_processing
4774 #define elf_backend_final_write_processing nacl_final_write_processing
4776 #include "elf32-target.h"
4778 /* Restore defaults. */
4779 #undef elf_backend_object_p
4780 #undef elf_backend_modify_segment_map
4781 #undef elf_backend_modify_headers
4782 #undef elf_backend_final_write_processing
4784 /* VxWorks support. */
4786 #undef TARGET_LITTLE_SYM
4787 #define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
4788 #undef TARGET_LITTLE_NAME
4789 #define TARGET_LITTLE_NAME "elf32-i386-vxworks"
4791 #undef ELF_MAXPAGESIZE
4792 #define ELF_MAXPAGESIZE 0x1000
4793 #undef elf_backend_plt_alignment
4794 #define elf_backend_plt_alignment 4
4796 #undef ELF_TARGET_OS
4797 #define ELF_TARGET_OS is_vxworks
4799 #undef elf_backend_relocs_compatible
4800 #undef elf_backend_add_symbol_hook
4801 #define elf_backend_add_symbol_hook \
4802 elf_vxworks_add_symbol_hook
4803 #undef elf_backend_link_output_symbol_hook
4804 #define elf_backend_link_output_symbol_hook \
4805 elf_vxworks_link_output_symbol_hook
4806 #undef elf_backend_emit_relocs
4807 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
4808 #undef elf_backend_final_write_processing
4809 #define elf_backend_final_write_processing \
4810 elf_vxworks_final_write_processing
4811 #undef elf_backend_static_tls_alignment
4813 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
4815 #undef elf_backend_want_plt_sym
4816 #define elf_backend_want_plt_sym 1
4819 #define elf32_bed elf32_i386_vxworks_bed
4821 #include "elf32-target.h"