1 /* Intel 80386/80486-specific support for 32-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
27 #include "elf-vxworks.h"
28 #include "bfd_stdint.h"
32 /* 386 uses REL relocations instead of RELA. */
37 static reloc_howto_type elf_howto_table[]=
39 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
40 bfd_elf_generic_reloc, "R_386_NONE",
41 TRUE, 0x00000000, 0x00000000, FALSE),
42 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
43 bfd_elf_generic_reloc, "R_386_32",
44 TRUE, 0xffffffff, 0xffffffff, FALSE),
45 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
46 bfd_elf_generic_reloc, "R_386_PC32",
47 TRUE, 0xffffffff, 0xffffffff, TRUE),
48 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
49 bfd_elf_generic_reloc, "R_386_GOT32",
50 TRUE, 0xffffffff, 0xffffffff, FALSE),
51 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
52 bfd_elf_generic_reloc, "R_386_PLT32",
53 TRUE, 0xffffffff, 0xffffffff, TRUE),
54 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
55 bfd_elf_generic_reloc, "R_386_COPY",
56 TRUE, 0xffffffff, 0xffffffff, FALSE),
57 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
58 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
59 TRUE, 0xffffffff, 0xffffffff, FALSE),
60 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
61 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
62 TRUE, 0xffffffff, 0xffffffff, FALSE),
63 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_386_RELATIVE",
65 TRUE, 0xffffffff, 0xffffffff, FALSE),
66 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
67 bfd_elf_generic_reloc, "R_386_GOTOFF",
68 TRUE, 0xffffffff, 0xffffffff, FALSE),
69 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_386_GOTPC",
71 TRUE, 0xffffffff, 0xffffffff, TRUE),
73 /* We have a gap in the reloc numbers here.
74 R_386_standard counts the number up to this point, and
75 R_386_ext_offset is the value to subtract from a reloc type of
76 R_386_16 thru R_386_PC8 to form an index into this table. */
77 #define R_386_standard (R_386_GOTPC + 1)
78 #define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
80 /* These relocs are a GNU extension. */
81 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
83 TRUE, 0xffffffff, 0xffffffff, FALSE),
84 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
85 bfd_elf_generic_reloc, "R_386_TLS_IE",
86 TRUE, 0xffffffff, 0xffffffff, FALSE),
87 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
89 TRUE, 0xffffffff, 0xffffffff, FALSE),
90 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
91 bfd_elf_generic_reloc, "R_386_TLS_LE",
92 TRUE, 0xffffffff, 0xffffffff, FALSE),
93 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_386_TLS_GD",
95 TRUE, 0xffffffff, 0xffffffff, FALSE),
96 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
97 bfd_elf_generic_reloc, "R_386_TLS_LDM",
98 TRUE, 0xffffffff, 0xffffffff, FALSE),
99 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
100 bfd_elf_generic_reloc, "R_386_16",
101 TRUE, 0xffff, 0xffff, FALSE),
102 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
103 bfd_elf_generic_reloc, "R_386_PC16",
104 TRUE, 0xffff, 0xffff, TRUE),
105 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
106 bfd_elf_generic_reloc, "R_386_8",
107 TRUE, 0xff, 0xff, FALSE),
108 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
109 bfd_elf_generic_reloc, "R_386_PC8",
110 TRUE, 0xff, 0xff, TRUE),
112 #define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
113 #define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
114 /* These are common with Solaris TLS implementation. */
115 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
117 TRUE, 0xffffffff, 0xffffffff, FALSE),
118 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
119 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
120 TRUE, 0xffffffff, 0xffffffff, FALSE),
121 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
123 TRUE, 0xffffffff, 0xffffffff, FALSE),
124 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
125 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
126 TRUE, 0xffffffff, 0xffffffff, FALSE),
127 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
128 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
129 TRUE, 0xffffffff, 0xffffffff, FALSE),
130 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
131 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
132 TRUE, 0xffffffff, 0xffffffff, FALSE),
134 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
136 TRUE, 0xffffffff, 0xffffffff, FALSE),
137 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
138 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
140 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_386_TLS_DESC",
142 TRUE, 0xffffffff, 0xffffffff, FALSE),
143 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_386_IRELATIVE",
145 TRUE, 0xffffffff, 0xffffffff, FALSE),
148 #define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
149 #define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
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 #ifdef DEBUG_GEN_RELOC
187 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
192 static reloc_howto_type *
193 elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
194 bfd_reloc_code_real_type code)
199 TRACE ("BFD_RELOC_NONE");
200 return &elf_howto_table[R_386_NONE];
203 TRACE ("BFD_RELOC_32");
204 return &elf_howto_table[R_386_32];
207 TRACE ("BFD_RELOC_CTOR");
208 return &elf_howto_table[R_386_32];
210 case BFD_RELOC_32_PCREL:
211 TRACE ("BFD_RELOC_PC32");
212 return &elf_howto_table[R_386_PC32];
214 case BFD_RELOC_386_GOT32:
215 TRACE ("BFD_RELOC_386_GOT32");
216 return &elf_howto_table[R_386_GOT32];
218 case BFD_RELOC_386_PLT32:
219 TRACE ("BFD_RELOC_386_PLT32");
220 return &elf_howto_table[R_386_PLT32];
222 case BFD_RELOC_386_COPY:
223 TRACE ("BFD_RELOC_386_COPY");
224 return &elf_howto_table[R_386_COPY];
226 case BFD_RELOC_386_GLOB_DAT:
227 TRACE ("BFD_RELOC_386_GLOB_DAT");
228 return &elf_howto_table[R_386_GLOB_DAT];
230 case BFD_RELOC_386_JUMP_SLOT:
231 TRACE ("BFD_RELOC_386_JUMP_SLOT");
232 return &elf_howto_table[R_386_JUMP_SLOT];
234 case BFD_RELOC_386_RELATIVE:
235 TRACE ("BFD_RELOC_386_RELATIVE");
236 return &elf_howto_table[R_386_RELATIVE];
238 case BFD_RELOC_386_GOTOFF:
239 TRACE ("BFD_RELOC_386_GOTOFF");
240 return &elf_howto_table[R_386_GOTOFF];
242 case BFD_RELOC_386_GOTPC:
243 TRACE ("BFD_RELOC_386_GOTPC");
244 return &elf_howto_table[R_386_GOTPC];
246 /* These relocs are a GNU extension. */
247 case BFD_RELOC_386_TLS_TPOFF:
248 TRACE ("BFD_RELOC_386_TLS_TPOFF");
249 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
251 case BFD_RELOC_386_TLS_IE:
252 TRACE ("BFD_RELOC_386_TLS_IE");
253 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
255 case BFD_RELOC_386_TLS_GOTIE:
256 TRACE ("BFD_RELOC_386_TLS_GOTIE");
257 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
259 case BFD_RELOC_386_TLS_LE:
260 TRACE ("BFD_RELOC_386_TLS_LE");
261 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
263 case BFD_RELOC_386_TLS_GD:
264 TRACE ("BFD_RELOC_386_TLS_GD");
265 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
267 case BFD_RELOC_386_TLS_LDM:
268 TRACE ("BFD_RELOC_386_TLS_LDM");
269 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
272 TRACE ("BFD_RELOC_16");
273 return &elf_howto_table[R_386_16 - R_386_ext_offset];
275 case BFD_RELOC_16_PCREL:
276 TRACE ("BFD_RELOC_16_PCREL");
277 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
280 TRACE ("BFD_RELOC_8");
281 return &elf_howto_table[R_386_8 - R_386_ext_offset];
283 case BFD_RELOC_8_PCREL:
284 TRACE ("BFD_RELOC_8_PCREL");
285 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
287 /* Common with Sun TLS implementation. */
288 case BFD_RELOC_386_TLS_LDO_32:
289 TRACE ("BFD_RELOC_386_TLS_LDO_32");
290 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
292 case BFD_RELOC_386_TLS_IE_32:
293 TRACE ("BFD_RELOC_386_TLS_IE_32");
294 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
296 case BFD_RELOC_386_TLS_LE_32:
297 TRACE ("BFD_RELOC_386_TLS_LE_32");
298 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
300 case BFD_RELOC_386_TLS_DTPMOD32:
301 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
302 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
304 case BFD_RELOC_386_TLS_DTPOFF32:
305 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
306 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
308 case BFD_RELOC_386_TLS_TPOFF32:
309 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
310 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
312 case BFD_RELOC_386_TLS_GOTDESC:
313 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
314 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
316 case BFD_RELOC_386_TLS_DESC_CALL:
317 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
318 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
320 case BFD_RELOC_386_TLS_DESC:
321 TRACE ("BFD_RELOC_386_TLS_DESC");
322 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
324 case BFD_RELOC_386_IRELATIVE:
325 TRACE ("BFD_RELOC_386_IRELATIVE");
326 return &elf_howto_table[R_386_IRELATIVE];
328 case BFD_RELOC_VTABLE_INHERIT:
329 TRACE ("BFD_RELOC_VTABLE_INHERIT");
330 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
332 case BFD_RELOC_VTABLE_ENTRY:
333 TRACE ("BFD_RELOC_VTABLE_ENTRY");
334 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
344 static reloc_howto_type *
345 elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
350 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
351 if (elf_howto_table[i].name != NULL
352 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
353 return &elf_howto_table[i];
358 static reloc_howto_type *
359 elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
363 if ((indx = r_type) >= R_386_standard
364 && ((indx = r_type - R_386_ext_offset) - R_386_standard
365 >= R_386_ext - R_386_standard)
366 && ((indx = r_type - R_386_tls_offset) - R_386_ext
367 >= R_386_irelative - R_386_ext)
368 && ((indx = r_type - R_386_vt_offset) - R_386_irelative
369 >= R_386_vt - R_386_irelative))
371 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
375 BFD_ASSERT (elf_howto_table [indx].type == r_type);
376 return &elf_howto_table[indx];
380 elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
382 Elf_Internal_Rela *dst)
384 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
385 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
388 /* Return whether a symbol name implies a local label. The UnixWare
389 2.1 cc generates temporary symbols that start with .X, so we
390 recognize them here. FIXME: do other SVR4 compilers also use .X?.
391 If so, we should move the .X recognition into
392 _bfd_elf_is_local_label_name. */
395 elf_i386_is_local_label_name (bfd *abfd, const char *name)
397 if (name[0] == '.' && name[1] == 'X')
400 return _bfd_elf_is_local_label_name (abfd, name);
403 /* Support for core dump NOTE sections. */
406 elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
411 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
413 int pr_version = bfd_get_32 (abfd, note->descdata);
419 elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
422 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
426 size = bfd_get_32 (abfd, note->descdata + 8);
430 switch (note->descsz)
435 case 144: /* Linux/i386 */
437 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
440 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
450 /* Make a ".reg/999" section. */
451 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
452 size, note->descpos + offset);
456 elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
458 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
460 int pr_version = bfd_get_32 (abfd, note->descdata);
465 elf_tdata (abfd)->core_program
466 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
467 elf_tdata (abfd)->core_command
468 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
472 switch (note->descsz)
477 case 124: /* Linux/i386 elf_prpsinfo. */
478 elf_tdata (abfd)->core_program
479 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
480 elf_tdata (abfd)->core_command
481 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
485 /* Note that for some reason, a spurious space is tacked
486 onto the end of the args in some (at least one anyway)
487 implementations, so strip it off if it exists. */
489 char *command = elf_tdata (abfd)->core_command;
490 int n = strlen (command);
492 if (0 < n && command[n - 1] == ' ')
493 command[n - 1] = '\0';
499 /* Functions for the i386 ELF linker.
501 In order to gain some understanding of code in this file without
502 knowing all the intricate details of the linker, note the
505 Functions named elf_i386_* are called by external routines, other
506 functions are only called locally. elf_i386_* functions appear
507 in this file more or less in the order in which they are called
508 from external routines. eg. elf_i386_check_relocs is called
509 early in the link process, elf_i386_finish_dynamic_sections is
510 one of the last functions. */
513 /* The name of the dynamic interpreter. This is put in the .interp
516 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
518 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
519 copying dynamic variables from a shared lib into an app's dynbss
520 section, and instead use a dynamic relocation to point into the
522 #define ELIMINATE_COPY_RELOCS 1
524 /* The size in bytes of an entry in the procedure linkage table. */
526 #define PLT_ENTRY_SIZE 16
528 /* The first entry in an absolute procedure linkage table looks like
529 this. See the SVR4 ABI i386 supplement to see how this works.
530 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
532 static const bfd_byte elf_i386_plt0_entry[12] =
534 0xff, 0x35, /* pushl contents of address */
535 0, 0, 0, 0, /* replaced with address of .got + 4. */
536 0xff, 0x25, /* jmp indirect */
537 0, 0, 0, 0 /* replaced with address of .got + 8. */
540 /* Subsequent entries in an absolute procedure linkage table look like
543 static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
545 0xff, 0x25, /* jmp indirect */
546 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
547 0x68, /* pushl immediate */
548 0, 0, 0, 0, /* replaced with offset into relocation table. */
549 0xe9, /* jmp relative */
550 0, 0, 0, 0 /* replaced with offset to start of .plt. */
553 /* The first entry in a PIC procedure linkage table look like this.
554 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
556 static const bfd_byte elf_i386_pic_plt0_entry[12] =
558 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
559 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
562 /* Subsequent entries in a PIC procedure linkage table look like this. */
564 static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
566 0xff, 0xa3, /* jmp *offset(%ebx) */
567 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
568 0x68, /* pushl immediate */
569 0, 0, 0, 0, /* replaced with offset into relocation table. */
570 0xe9, /* jmp relative */
571 0, 0, 0, 0 /* replaced with offset to start of .plt. */
574 /* On VxWorks, the .rel.plt.unloaded section has absolute relocations
575 for the PLTResolve stub and then for each PLT entry. */
576 #define PLTRESOLVE_RELOCS_SHLIB 0
577 #define PLTRESOLVE_RELOCS 2
578 #define PLT_NON_JUMP_SLOT_RELOCS 2
580 /* i386 ELF linker hash entry. */
582 struct elf_i386_link_hash_entry
584 struct elf_link_hash_entry elf;
586 /* Track dynamic relocs copied for this symbol. */
587 struct elf_dyn_relocs *dyn_relocs;
589 #define GOT_UNKNOWN 0
593 #define GOT_TLS_IE_POS 5
594 #define GOT_TLS_IE_NEG 6
595 #define GOT_TLS_IE_BOTH 7
596 #define GOT_TLS_GDESC 8
597 #define GOT_TLS_GD_BOTH_P(type) \
598 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
599 #define GOT_TLS_GD_P(type) \
600 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
601 #define GOT_TLS_GDESC_P(type) \
602 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
603 #define GOT_TLS_GD_ANY_P(type) \
604 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
605 unsigned char tls_type;
607 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
608 starting at the end of the jump table. */
612 #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
614 struct elf_i386_obj_tdata
616 struct elf_obj_tdata root;
618 /* tls_type for each local got entry. */
619 char *local_got_tls_type;
621 /* GOTPLT entries for TLS descriptors. */
622 bfd_vma *local_tlsdesc_gotent;
625 #define elf_i386_tdata(abfd) \
626 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
628 #define elf_i386_local_got_tls_type(abfd) \
629 (elf_i386_tdata (abfd)->local_got_tls_type)
631 #define elf_i386_local_tlsdesc_gotent(abfd) \
632 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
634 #define is_i386_elf(bfd) \
635 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
636 && elf_tdata (bfd) != NULL \
637 && elf_object_id (bfd) == I386_ELF_TDATA)
640 elf_i386_mkobject (bfd *abfd)
642 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
646 /* i386 ELF linker hash table. */
648 struct elf_i386_link_hash_table
650 struct elf_link_hash_table elf;
652 /* Short-cuts to get to dynamic linker sections. */
656 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
659 /* True if the target system is VxWorks. */
662 /* Value used to fill the last word of the first plt entry. */
663 bfd_byte plt0_pad_byte;
665 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
666 bfd_vma next_tls_desc_index;
669 bfd_signed_vma refcount;
673 /* The amount of space used by the reserved portion of the sgotplt
674 section, plus whatever space is used by the jump slots. */
675 bfd_vma sgotplt_jump_table_size;
677 /* Small local sym cache. */
678 struct sym_cache sym_cache;
680 /* _TLS_MODULE_BASE_ symbol. */
681 struct bfd_link_hash_entry *tls_module_base;
683 /* Used by local STT_GNU_IFUNC symbols. */
684 htab_t loc_hash_table;
685 void *loc_hash_memory;
688 /* Get the i386 ELF linker hash table from a link_info structure. */
690 #define elf_i386_hash_table(p) \
691 ((struct elf_i386_link_hash_table *) ((p)->hash))
693 #define elf_i386_compute_jump_table_size(htab) \
694 ((htab)->next_tls_desc_index * 4)
696 /* Create an entry in an i386 ELF linker hash table. */
698 static struct bfd_hash_entry *
699 elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
700 struct bfd_hash_table *table,
703 /* Allocate the structure if it has not already been allocated by a
707 entry = bfd_hash_allocate (table,
708 sizeof (struct elf_i386_link_hash_entry));
713 /* Call the allocation method of the superclass. */
714 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
717 struct elf_i386_link_hash_entry *eh;
719 eh = (struct elf_i386_link_hash_entry *) entry;
720 eh->dyn_relocs = NULL;
721 eh->tls_type = GOT_UNKNOWN;
722 eh->tlsdesc_got = (bfd_vma) -1;
728 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
729 for local symbol so that we can handle local STT_GNU_IFUNC symbols
730 as global symbol. We reuse indx and dynstr_index for local symbol
731 hash since they aren't used by global symbols in this backend. */
734 elf_i386_local_htab_hash (const void *ptr)
736 struct elf_link_hash_entry *h
737 = (struct elf_link_hash_entry *) ptr;
738 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
741 /* Compare local hash entries. */
744 elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
746 struct elf_link_hash_entry *h1
747 = (struct elf_link_hash_entry *) ptr1;
748 struct elf_link_hash_entry *h2
749 = (struct elf_link_hash_entry *) ptr2;
751 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
754 /* Find and/or create a hash entry for local symbol. */
756 static struct elf_link_hash_entry *
757 elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
758 bfd *abfd, const Elf_Internal_Rela *rel,
761 struct elf_i386_link_hash_entry e, *ret;
762 asection *sec = abfd->sections;
763 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
764 ELF32_R_SYM (rel->r_info));
767 e.elf.indx = sec->id;
768 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
769 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
770 create ? INSERT : NO_INSERT);
777 ret = (struct elf_i386_link_hash_entry *) *slot;
781 ret = (struct elf_i386_link_hash_entry *)
782 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
783 sizeof (struct elf_i386_link_hash_entry));
786 memset (ret, 0, sizeof (*ret));
787 ret->elf.indx = sec->id;
788 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
789 ret->elf.dynindx = -1;
790 ret->elf.plt.offset = (bfd_vma) -1;
791 ret->elf.got.offset = (bfd_vma) -1;
797 /* Create an i386 ELF linker hash table. */
799 static struct bfd_link_hash_table *
800 elf_i386_link_hash_table_create (bfd *abfd)
802 struct elf_i386_link_hash_table *ret;
803 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
805 ret = bfd_malloc (amt);
809 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
810 elf_i386_link_hash_newfunc,
811 sizeof (struct elf_i386_link_hash_entry)))
819 ret->tls_ldm_got.refcount = 0;
820 ret->next_tls_desc_index = 0;
821 ret->sgotplt_jump_table_size = 0;
822 ret->sym_cache.abfd = NULL;
824 ret->srelplt2 = NULL;
825 ret->plt0_pad_byte = 0;
826 ret->tls_module_base = NULL;
828 ret->loc_hash_table = htab_try_create (1024,
829 elf_i386_local_htab_hash,
830 elf_i386_local_htab_eq,
832 ret->loc_hash_memory = objalloc_create ();
833 if (!ret->loc_hash_table || !ret->loc_hash_memory)
839 return &ret->elf.root;
842 /* Destroy an i386 ELF linker hash table. */
845 elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
847 struct elf_i386_link_hash_table *htab
848 = (struct elf_i386_link_hash_table *) hash;
850 if (htab->loc_hash_table)
851 htab_delete (htab->loc_hash_table);
852 if (htab->loc_hash_memory)
853 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
854 _bfd_generic_link_hash_table_free (hash);
857 /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
858 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
862 elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
864 struct elf_i386_link_hash_table *htab;
866 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
869 htab = elf_i386_hash_table (info);
870 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
872 htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
875 || (!info->shared && !htab->srelbss))
879 && !elf_vxworks_create_dynamic_sections (dynobj, info,
886 /* Copy the extra info we tack onto an elf_link_hash_entry. */
889 elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
890 struct elf_link_hash_entry *dir,
891 struct elf_link_hash_entry *ind)
893 struct elf_i386_link_hash_entry *edir, *eind;
895 edir = (struct elf_i386_link_hash_entry *) dir;
896 eind = (struct elf_i386_link_hash_entry *) ind;
898 if (eind->dyn_relocs != NULL)
900 if (edir->dyn_relocs != NULL)
902 struct elf_dyn_relocs **pp;
903 struct elf_dyn_relocs *p;
905 /* Add reloc counts against the indirect sym to the direct sym
906 list. Merge any entries against the same section. */
907 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
909 struct elf_dyn_relocs *q;
911 for (q = edir->dyn_relocs; q != NULL; q = q->next)
912 if (q->sec == p->sec)
914 q->pc_count += p->pc_count;
915 q->count += p->count;
922 *pp = edir->dyn_relocs;
925 edir->dyn_relocs = eind->dyn_relocs;
926 eind->dyn_relocs = NULL;
929 if (ind->root.type == bfd_link_hash_indirect
930 && dir->got.refcount <= 0)
932 edir->tls_type = eind->tls_type;
933 eind->tls_type = GOT_UNKNOWN;
936 if (ELIMINATE_COPY_RELOCS
937 && ind->root.type != bfd_link_hash_indirect
938 && dir->dynamic_adjusted)
940 /* If called to transfer flags for a weakdef during processing
941 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
942 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
943 dir->ref_dynamic |= ind->ref_dynamic;
944 dir->ref_regular |= ind->ref_regular;
945 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
946 dir->needs_plt |= ind->needs_plt;
947 dir->pointer_equality_needed |= ind->pointer_equality_needed;
950 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
960 /* Return TRUE if the TLS access code sequence support transition
964 elf_i386_check_tls_transition (bfd *abfd, asection *sec,
966 Elf_Internal_Shdr *symtab_hdr,
967 struct elf_link_hash_entry **sym_hashes,
969 const Elf_Internal_Rela *rel,
970 const Elf_Internal_Rela *relend)
972 unsigned int val, type;
973 unsigned long r_symndx;
974 struct elf_link_hash_entry *h;
977 /* Get the section contents. */
978 if (contents == NULL)
980 if (elf_section_data (sec)->this_hdr.contents != NULL)
981 contents = elf_section_data (sec)->this_hdr.contents;
984 /* FIXME: How to better handle error condition? */
985 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
988 /* Cache the section contents for elf_link_input_bfd. */
989 elf_section_data (sec)->this_hdr.contents = contents;
993 offset = rel->r_offset;
998 if (offset < 2 || (rel + 1) >= relend)
1001 type = bfd_get_8 (abfd, contents + offset - 2);
1002 if (r_type == R_386_TLS_GD)
1004 /* Check transition from GD access model. Only
1005 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1006 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1007 can transit to different access model. */
1008 if ((offset + 10) > sec->size ||
1009 (type != 0x8d && type != 0x04))
1012 val = bfd_get_8 (abfd, contents + offset - 1);
1015 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1019 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1022 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1027 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1028 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1031 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1037 /* Check transition from LD access model. Only
1038 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1039 can transit to different access model. */
1040 if (type != 0x8d || (offset + 9) > sec->size)
1043 val = bfd_get_8 (abfd, contents + offset - 1);
1044 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1048 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1051 r_symndx = ELF32_R_SYM (rel[1].r_info);
1052 if (r_symndx < symtab_hdr->sh_info)
1055 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1056 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1057 may be versioned. */
1059 && h->root.root.string != NULL
1060 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1061 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
1062 && (strncmp (h->root.root.string, "___tls_get_addr",
1066 /* Check transition from IE access model:
1067 movl foo@indntpoff(%rip), %eax
1068 movl foo@indntpoff(%rip), %reg
1069 addl foo@indntpoff(%rip), %reg
1072 if (offset < 1 || (offset + 4) > sec->size)
1075 /* Check "movl foo@tpoff(%rip), %eax" first. */
1076 val = bfd_get_8 (abfd, contents + offset - 1);
1083 /* Check movl|addl foo@tpoff(%rip), %reg. */
1084 type = bfd_get_8 (abfd, contents + offset - 2);
1085 return ((type == 0x8b || type == 0x03)
1086 && (val & 0xc7) == 0x05);
1088 case R_386_TLS_GOTIE:
1089 case R_386_TLS_IE_32:
1090 /* Check transition from {IE_32,GOTIE} access model:
1091 subl foo@{tpoff,gontoff}(%reg1), %reg2
1092 movl foo@{tpoff,gontoff}(%reg1), %reg2
1093 addl foo@{tpoff,gontoff}(%reg1), %reg2
1096 if (offset < 2 || (offset + 4) > sec->size)
1099 val = bfd_get_8 (abfd, contents + offset - 1);
1100 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1103 type = bfd_get_8 (abfd, contents + offset - 2);
1104 return type == 0x8b || type == 0x2b || type == 0x03;
1106 case R_386_TLS_GOTDESC:
1107 /* Check transition from GDesc access model:
1108 leal x@tlsdesc(%ebx), %eax
1110 Make sure it's a leal adding ebx to a 32-bit offset
1111 into any register, although it's probably almost always
1114 if (offset < 2 || (offset + 4) > sec->size)
1117 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1120 val = bfd_get_8 (abfd, contents + offset - 1);
1121 return (val & 0xc7) == 0x83;
1123 case R_386_TLS_DESC_CALL:
1124 /* Check transition from GDesc access model:
1125 call *x@tlsdesc(%rax)
1127 if (offset + 2 <= sec->size)
1129 /* Make sure that it's a call *x@tlsdesc(%rax). */
1130 static i386_opcode16 call = { { 0xff, 0x10 } };
1131 return bfd_get_16 (abfd, contents + offset) == call.i;
1141 /* Return TRUE if the TLS access transition is OK or no transition
1142 will be performed. Update R_TYPE if there is a transition. */
1145 elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1146 asection *sec, bfd_byte *contents,
1147 Elf_Internal_Shdr *symtab_hdr,
1148 struct elf_link_hash_entry **sym_hashes,
1149 unsigned int *r_type, int tls_type,
1150 const Elf_Internal_Rela *rel,
1151 const Elf_Internal_Rela *relend,
1152 struct elf_link_hash_entry *h)
1154 unsigned int from_type = *r_type;
1155 unsigned int to_type = from_type;
1156 bfd_boolean check = TRUE;
1161 case R_386_TLS_GOTDESC:
1162 case R_386_TLS_DESC_CALL:
1163 case R_386_TLS_IE_32:
1165 case R_386_TLS_GOTIE:
1169 to_type = R_386_TLS_LE_32;
1170 else if (from_type != R_386_TLS_IE
1171 && from_type != R_386_TLS_GOTIE)
1172 to_type = R_386_TLS_IE_32;
1175 /* When we are called from elf_i386_relocate_section, CONTENTS
1176 isn't NULL and there may be additional transitions based on
1178 if (contents != NULL)
1180 unsigned int new_to_type = to_type;
1185 && (tls_type & GOT_TLS_IE))
1186 new_to_type = R_386_TLS_LE_32;
1188 if (to_type == R_386_TLS_GD
1189 || to_type == R_386_TLS_GOTDESC
1190 || to_type == R_386_TLS_DESC_CALL)
1192 if (tls_type == GOT_TLS_IE_POS)
1193 new_to_type = R_386_TLS_GOTIE;
1194 else if (tls_type & GOT_TLS_IE)
1195 new_to_type = R_386_TLS_IE_32;
1198 /* We checked the transition before when we were called from
1199 elf_i386_check_relocs. We only want to check the new
1200 transition which hasn't been checked before. */
1201 check = new_to_type != to_type && from_type == to_type;
1202 to_type = new_to_type;
1209 to_type = R_386_TLS_LE_32;
1216 /* Return TRUE if there is no transition. */
1217 if (from_type == to_type)
1220 /* Check if the transition can be performed. */
1222 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1223 symtab_hdr, sym_hashes,
1224 from_type, rel, relend))
1226 reloc_howto_type *from, *to;
1228 from = elf_i386_rtype_to_howto (abfd, from_type);
1229 to = elf_i386_rtype_to_howto (abfd, to_type);
1231 (*_bfd_error_handler)
1232 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1233 "in section `%A' failed"),
1234 abfd, sec, from->name, to->name,
1235 h ? h->root.root.string : "a local symbol",
1236 (unsigned long) rel->r_offset);
1237 bfd_set_error (bfd_error_bad_value);
1245 /* Look through the relocs for a section during the first phase, and
1246 calculate needed space in the global offset table, procedure linkage
1247 table, and dynamic reloc sections. */
1250 elf_i386_check_relocs (bfd *abfd,
1251 struct bfd_link_info *info,
1253 const Elf_Internal_Rela *relocs)
1255 struct elf_i386_link_hash_table *htab;
1256 Elf_Internal_Shdr *symtab_hdr;
1257 struct elf_link_hash_entry **sym_hashes;
1258 const Elf_Internal_Rela *rel;
1259 const Elf_Internal_Rela *rel_end;
1262 if (info->relocatable)
1265 BFD_ASSERT (is_i386_elf (abfd));
1267 htab = elf_i386_hash_table (info);
1268 symtab_hdr = &elf_symtab_hdr (abfd);
1269 sym_hashes = elf_sym_hashes (abfd);
1273 rel_end = relocs + sec->reloc_count;
1274 for (rel = relocs; rel < rel_end; rel++)
1276 unsigned int r_type;
1277 unsigned long r_symndx;
1278 struct elf_link_hash_entry *h;
1280 r_symndx = ELF32_R_SYM (rel->r_info);
1281 r_type = ELF32_R_TYPE (rel->r_info);
1283 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1285 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1291 if (r_symndx < symtab_hdr->sh_info)
1293 /* A local symbol. */
1294 Elf_Internal_Sym *isym;
1296 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1301 /* Check relocation against local STT_GNU_IFUNC symbol. */
1302 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1304 h = elf_i386_get_local_sym_hash (htab, abfd, rel,
1309 /* Fake a STT_GNU_IFUNC symbol. */
1310 h->type = STT_GNU_IFUNC;
1313 h->forced_local = 1;
1314 h->root.type = bfd_link_hash_defined;
1321 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1322 while (h->root.type == bfd_link_hash_indirect
1323 || h->root.type == bfd_link_hash_warning)
1324 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1329 /* Create the ifunc sections for static executables. If we
1330 never see an indirect function symbol nor we are building
1331 a static executable, those sections will be empty and
1332 won't appear in output. */
1343 if (!_bfd_elf_create_ifunc_sections (abfd, info))
1348 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
1349 it here if it is defined in a non-shared object. */
1350 if (h->type == STT_GNU_IFUNC
1353 /* It is referenced by a non-shared object. */
1356 /* STT_GNU_IFUNC symbol must go through PLT. */
1357 h->plt.refcount += 1;
1359 /* STT_GNU_IFUNC needs dynamic sections. */
1360 if (htab->elf.dynobj == NULL)
1361 htab->elf.dynobj = abfd;
1366 (*_bfd_error_handler)
1367 (_("%B: relocation %s against STT_GNU_IFUNC "
1368 "symbol `%s' isn't handled by %s"), abfd,
1369 elf_howto_table[r_type].name,
1370 (h->root.root.string
1371 ? h->root.root.string : "a local symbol"),
1373 bfd_set_error (bfd_error_bad_value);
1378 h->pointer_equality_needed = 1;
1381 /* We must copy these reloc types into the
1382 output file. Create a reloc section in
1383 dynobj and make room for this reloc. */
1384 sreloc = _bfd_elf_create_ifunc_dyn_reloc
1385 (abfd, info, sec, sreloc,
1386 &((struct elf_i386_link_hash_entry *) h)->dyn_relocs);
1401 h->got.refcount += 1;
1402 if (htab->elf.sgot == NULL
1403 && !_bfd_elf_create_got_section (htab->elf.dynobj,
1413 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1414 symtab_hdr, sym_hashes,
1415 &r_type, GOT_UNKNOWN,
1422 htab->tls_ldm_got.refcount += 1;
1426 /* This symbol requires a procedure linkage table entry. We
1427 actually build the entry in adjust_dynamic_symbol,
1428 because this might be a case of linking PIC code which is
1429 never referenced by a dynamic object, in which case we
1430 don't need to generate a procedure linkage table entry
1433 /* If this is a local symbol, we resolve it directly without
1434 creating a procedure linkage table entry. */
1439 h->plt.refcount += 1;
1442 case R_386_TLS_IE_32:
1444 case R_386_TLS_GOTIE:
1446 info->flags |= DF_STATIC_TLS;
1451 case R_386_TLS_GOTDESC:
1452 case R_386_TLS_DESC_CALL:
1453 /* This symbol requires a global offset table entry. */
1455 int tls_type, old_tls_type;
1460 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1461 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
1462 case R_386_TLS_GOTDESC:
1463 case R_386_TLS_DESC_CALL:
1464 tls_type = GOT_TLS_GDESC; break;
1465 case R_386_TLS_IE_32:
1466 if (ELF32_R_TYPE (rel->r_info) == r_type)
1467 tls_type = GOT_TLS_IE_NEG;
1469 /* If this is a GD->IE transition, we may use either of
1470 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
1471 tls_type = GOT_TLS_IE;
1474 case R_386_TLS_GOTIE:
1475 tls_type = GOT_TLS_IE_POS; break;
1480 h->got.refcount += 1;
1481 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1485 bfd_signed_vma *local_got_refcounts;
1487 /* This is a global offset table entry for a local symbol. */
1488 local_got_refcounts = elf_local_got_refcounts (abfd);
1489 if (local_got_refcounts == NULL)
1493 size = symtab_hdr->sh_info;
1494 size *= (sizeof (bfd_signed_vma)
1495 + sizeof (bfd_vma) + sizeof(char));
1496 local_got_refcounts = bfd_zalloc (abfd, size);
1497 if (local_got_refcounts == NULL)
1499 elf_local_got_refcounts (abfd) = local_got_refcounts;
1500 elf_i386_local_tlsdesc_gotent (abfd)
1501 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
1502 elf_i386_local_got_tls_type (abfd)
1503 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
1505 local_got_refcounts[r_symndx] += 1;
1506 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1509 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1510 tls_type |= old_tls_type;
1511 /* If a TLS symbol is accessed using IE at least once,
1512 there is no point to use dynamic model for it. */
1513 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1514 && (! GOT_TLS_GD_ANY_P (old_tls_type)
1515 || (tls_type & GOT_TLS_IE) == 0))
1517 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
1518 tls_type = old_tls_type;
1519 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1520 && GOT_TLS_GD_ANY_P (tls_type))
1521 tls_type |= old_tls_type;
1524 (*_bfd_error_handler)
1525 (_("%B: `%s' accessed both as normal and "
1526 "thread local symbol"),
1528 h ? h->root.root.string : "<local>");
1533 if (old_tls_type != tls_type)
1536 elf_i386_hash_entry (h)->tls_type = tls_type;
1538 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1546 if (htab->elf.sgot == NULL)
1548 if (htab->elf.dynobj == NULL)
1549 htab->elf.dynobj = abfd;
1550 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1553 if (r_type != R_386_TLS_IE)
1557 case R_386_TLS_LE_32:
1561 info->flags |= DF_STATIC_TLS;
1566 if (h != NULL && info->executable)
1568 /* If this reloc is in a read-only section, we might
1569 need a copy reloc. We can't check reliably at this
1570 stage whether the section is read-only, as input
1571 sections have not yet been mapped to output sections.
1572 Tentatively set the flag for now, and correct in
1573 adjust_dynamic_symbol. */
1576 /* We may need a .plt entry if the function this reloc
1577 refers to is in a shared lib. */
1578 h->plt.refcount += 1;
1579 if (r_type != R_386_PC32)
1580 h->pointer_equality_needed = 1;
1583 /* If we are creating a shared library, and this is a reloc
1584 against a global symbol, or a non PC relative reloc
1585 against a local symbol, then we need to copy the reloc
1586 into the shared library. However, if we are linking with
1587 -Bsymbolic, we do not need to copy a reloc against a
1588 global symbol which is defined in an object we are
1589 including in the link (i.e., DEF_REGULAR is set). At
1590 this point we have not seen all the input files, so it is
1591 possible that DEF_REGULAR is not set now but will be set
1592 later (it is never cleared). In case of a weak definition,
1593 DEF_REGULAR may be cleared later by a strong definition in
1594 a shared library. We account for that possibility below by
1595 storing information in the relocs_copied field of the hash
1596 table entry. A similar situation occurs when creating
1597 shared libraries and symbol visibility changes render the
1600 If on the other hand, we are creating an executable, we
1601 may need to keep relocations for symbols satisfied by a
1602 dynamic library if we manage to avoid copy relocs for the
1605 && (sec->flags & SEC_ALLOC) != 0
1606 && (r_type != R_386_PC32
1608 && (! SYMBOLIC_BIND (info, h)
1609 || h->root.type == bfd_link_hash_defweak
1610 || !h->def_regular))))
1611 || (ELIMINATE_COPY_RELOCS
1613 && (sec->flags & SEC_ALLOC) != 0
1615 && (h->root.type == bfd_link_hash_defweak
1616 || !h->def_regular)))
1618 struct elf_dyn_relocs *p;
1619 struct elf_dyn_relocs **head;
1621 /* We must copy these reloc types into the output file.
1622 Create a reloc section in dynobj and make room for
1626 if (htab->elf.dynobj == NULL)
1627 htab->elf.dynobj = abfd;
1629 sreloc = _bfd_elf_make_dynamic_reloc_section
1630 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1636 /* If this is a global symbol, we count the number of
1637 relocations we need for this symbol. */
1640 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
1644 /* Track dynamic relocs needed for local syms too.
1645 We really need local syms available to do this
1649 Elf_Internal_Sym *isym;
1651 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1656 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1660 vpp = &elf_section_data (s)->local_dynrel;
1661 head = (struct elf_dyn_relocs **)vpp;
1665 if (p == NULL || p->sec != sec)
1667 bfd_size_type amt = sizeof *p;
1668 p = bfd_alloc (htab->elf.dynobj, amt);
1679 if (r_type == R_386_PC32)
1684 /* This relocation describes the C++ object vtable hierarchy.
1685 Reconstruct it for later use during GC. */
1686 case R_386_GNU_VTINHERIT:
1687 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1691 /* This relocation describes which C++ vtable entries are actually
1692 used. Record for later use during GC. */
1693 case R_386_GNU_VTENTRY:
1694 BFD_ASSERT (h != NULL);
1696 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
1708 /* Return the section that should be marked against GC for a given
1712 elf_i386_gc_mark_hook (asection *sec,
1713 struct bfd_link_info *info,
1714 Elf_Internal_Rela *rel,
1715 struct elf_link_hash_entry *h,
1716 Elf_Internal_Sym *sym)
1719 switch (ELF32_R_TYPE (rel->r_info))
1721 case R_386_GNU_VTINHERIT:
1722 case R_386_GNU_VTENTRY:
1726 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1729 /* Update the got entry reference counts for the section being removed. */
1732 elf_i386_gc_sweep_hook (bfd *abfd,
1733 struct bfd_link_info *info,
1735 const Elf_Internal_Rela *relocs)
1737 Elf_Internal_Shdr *symtab_hdr;
1738 struct elf_link_hash_entry **sym_hashes;
1739 bfd_signed_vma *local_got_refcounts;
1740 const Elf_Internal_Rela *rel, *relend;
1742 if (info->relocatable)
1745 elf_section_data (sec)->local_dynrel = NULL;
1747 symtab_hdr = &elf_symtab_hdr (abfd);
1748 sym_hashes = elf_sym_hashes (abfd);
1749 local_got_refcounts = elf_local_got_refcounts (abfd);
1751 relend = relocs + sec->reloc_count;
1752 for (rel = relocs; rel < relend; rel++)
1754 unsigned long r_symndx;
1755 unsigned int r_type;
1756 struct elf_link_hash_entry *h = NULL;
1758 r_symndx = ELF32_R_SYM (rel->r_info);
1759 if (r_symndx >= symtab_hdr->sh_info)
1761 struct elf_i386_link_hash_entry *eh;
1762 struct elf_dyn_relocs **pp;
1763 struct elf_dyn_relocs *p;
1765 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1766 while (h->root.type == bfd_link_hash_indirect
1767 || h->root.type == bfd_link_hash_warning)
1768 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1769 eh = (struct elf_i386_link_hash_entry *) h;
1771 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1774 /* Everything must go for SEC. */
1780 r_type = ELF32_R_TYPE (rel->r_info);
1781 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1782 symtab_hdr, sym_hashes,
1783 &r_type, GOT_UNKNOWN,
1790 if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0)
1791 elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1;
1795 case R_386_TLS_GOTDESC:
1796 case R_386_TLS_DESC_CALL:
1797 case R_386_TLS_IE_32:
1799 case R_386_TLS_GOTIE:
1803 if (h->got.refcount > 0)
1804 h->got.refcount -= 1;
1806 else if (local_got_refcounts != NULL)
1808 if (local_got_refcounts[r_symndx] > 0)
1809 local_got_refcounts[r_symndx] -= 1;
1822 if (h->plt.refcount > 0)
1823 h->plt.refcount -= 1;
1835 /* Adjust a symbol defined by a dynamic object and referenced by a
1836 regular object. The current definition is in some section of the
1837 dynamic object, but we're not including those sections. We have to
1838 change the definition to something the rest of the link can
1842 elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
1843 struct elf_link_hash_entry *h)
1845 struct elf_i386_link_hash_table *htab;
1848 /* STT_GNU_IFUNC symbol must go through PLT. */
1849 if (h->type == STT_GNU_IFUNC)
1851 if (h->plt.refcount <= 0)
1853 h->plt.offset = (bfd_vma) -1;
1859 /* If this is a function, put it in the procedure linkage table. We
1860 will fill in the contents of the procedure linkage table later,
1861 when we know the address of the .got section. */
1862 if (h->type == STT_FUNC
1865 if (h->plt.refcount <= 0
1866 || SYMBOL_CALLS_LOCAL (info, h)
1867 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1868 && h->root.type == bfd_link_hash_undefweak))
1870 /* This case can occur if we saw a PLT32 reloc in an input
1871 file, but the symbol was never referred to by a dynamic
1872 object, or if all references were garbage collected. In
1873 such a case, we don't actually need to build a procedure
1874 linkage table, and we can just do a PC32 reloc instead. */
1875 h->plt.offset = (bfd_vma) -1;
1882 /* It's possible that we incorrectly decided a .plt reloc was
1883 needed for an R_386_PC32 reloc to a non-function sym in
1884 check_relocs. We can't decide accurately between function and
1885 non-function syms in check-relocs; Objects loaded later in
1886 the link may change h->type. So fix it now. */
1887 h->plt.offset = (bfd_vma) -1;
1889 /* If this is a weak symbol, and there is a real definition, the
1890 processor independent code will have arranged for us to see the
1891 real definition first, and we can just use the same value. */
1892 if (h->u.weakdef != NULL)
1894 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1895 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1896 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1897 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1898 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1899 h->non_got_ref = h->u.weakdef->non_got_ref;
1903 /* This is a reference to a symbol defined by a dynamic object which
1904 is not a function. */
1906 /* If we are creating a shared library, we must presume that the
1907 only references to the symbol are via the global offset table.
1908 For such cases we need not do anything here; the relocations will
1909 be handled correctly by relocate_section. */
1913 /* If there are no references to this symbol that do not use the
1914 GOT, we don't need to generate a copy reloc. */
1915 if (!h->non_got_ref)
1918 /* If -z nocopyreloc was given, we won't generate them either. */
1919 if (info->nocopyreloc)
1925 htab = elf_i386_hash_table (info);
1927 /* If there aren't any dynamic relocs in read-only sections, then
1928 we can keep the dynamic relocs and avoid the copy reloc. This
1929 doesn't work on VxWorks, where we can not have dynamic relocations
1930 (other than copy and jump slot relocations) in an executable. */
1931 if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks)
1933 struct elf_i386_link_hash_entry * eh;
1934 struct elf_dyn_relocs *p;
1936 eh = (struct elf_i386_link_hash_entry *) h;
1937 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1939 s = p->sec->output_section;
1940 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1953 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1954 h->root.root.string);
1958 /* We must allocate the symbol in our .dynbss section, which will
1959 become part of the .bss section of the executable. There will be
1960 an entry for this symbol in the .dynsym section. The dynamic
1961 object will contain position independent code, so all references
1962 from the dynamic object to this symbol will go through the global
1963 offset table. The dynamic linker will use the .dynsym entry to
1964 determine the address it must put in the global offset table, so
1965 both the dynamic object and the regular object will refer to the
1966 same memory location for the variable. */
1968 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
1969 copy the initial value out of the dynamic object and into the
1970 runtime process image. */
1971 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1973 htab->srelbss->size += sizeof (Elf32_External_Rel);
1979 return _bfd_elf_adjust_dynamic_copy (h, s);
1982 /* Allocate space in .plt, .got and associated reloc sections for
1986 elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
1988 struct bfd_link_info *info;
1989 struct elf_i386_link_hash_table *htab;
1990 struct elf_i386_link_hash_entry *eh;
1991 struct elf_dyn_relocs *p;
1993 if (h->root.type == bfd_link_hash_indirect)
1996 if (h->root.type == bfd_link_hash_warning)
1997 /* When warning symbols are created, they **replace** the "real"
1998 entry in the hash table, thus we never get to see the real
1999 symbol in a hash traversal. So look at it now. */
2000 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2001 eh = (struct elf_i386_link_hash_entry *) h;
2003 info = (struct bfd_link_info *) inf;
2004 htab = elf_i386_hash_table (info);
2006 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2007 here if it is defined and referenced in a non-shared object. */
2008 if (h->type == STT_GNU_IFUNC
2010 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
2013 else if (htab->elf.dynamic_sections_created
2014 && h->plt.refcount > 0)
2016 /* Make sure this symbol is output as a dynamic symbol.
2017 Undefined weak syms won't yet be marked as dynamic. */
2018 if (h->dynindx == -1
2019 && !h->forced_local)
2021 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2026 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2028 asection *s = htab->elf.splt;
2030 /* If this is the first .plt entry, make room for the special
2033 s->size += PLT_ENTRY_SIZE;
2035 h->plt.offset = s->size;
2037 /* If this symbol is not defined in a regular file, and we are
2038 not generating a shared library, then set the symbol to this
2039 location in the .plt. This is required to make function
2040 pointers compare as equal between the normal executable and
2041 the shared library. */
2045 h->root.u.def.section = s;
2046 h->root.u.def.value = h->plt.offset;
2049 /* Make room for this entry. */
2050 s->size += PLT_ENTRY_SIZE;
2052 /* We also need to make an entry in the .got.plt section, which
2053 will be placed in the .got section by the linker script. */
2054 htab->elf.sgotplt->size += 4;
2056 /* We also need to make an entry in the .rel.plt section. */
2057 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2058 htab->next_tls_desc_index++;
2060 if (htab->is_vxworks && !info->shared)
2062 /* VxWorks has a second set of relocations for each PLT entry
2063 in executables. They go in a separate relocation section,
2064 which is processed by the kernel loader. */
2066 /* There are two relocations for the initial PLT entry: an
2067 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2068 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2070 if (h->plt.offset == PLT_ENTRY_SIZE)
2071 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2073 /* There are two extra relocations for each subsequent PLT entry:
2074 an R_386_32 relocation for the GOT entry, and an R_386_32
2075 relocation for the PLT entry. */
2077 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2082 h->plt.offset = (bfd_vma) -1;
2088 h->plt.offset = (bfd_vma) -1;
2092 eh->tlsdesc_got = (bfd_vma) -1;
2094 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
2095 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2096 if (h->got.refcount > 0
2099 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
2100 h->got.offset = (bfd_vma) -1;
2101 else if (h->got.refcount > 0)
2105 int tls_type = elf_i386_hash_entry(h)->tls_type;
2107 /* Make sure this symbol is output as a dynamic symbol.
2108 Undefined weak syms won't yet be marked as dynamic. */
2109 if (h->dynindx == -1
2110 && !h->forced_local)
2112 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2117 if (GOT_TLS_GDESC_P (tls_type))
2119 eh->tlsdesc_got = htab->elf.sgotplt->size
2120 - elf_i386_compute_jump_table_size (htab);
2121 htab->elf.sgotplt->size += 8;
2122 h->got.offset = (bfd_vma) -2;
2124 if (! GOT_TLS_GDESC_P (tls_type)
2125 || GOT_TLS_GD_P (tls_type))
2127 h->got.offset = s->size;
2129 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2130 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2133 dyn = htab->elf.dynamic_sections_created;
2134 /* R_386_TLS_IE_32 needs one dynamic relocation,
2135 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2136 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2137 need two), R_386_TLS_GD needs one if local symbol and two if
2139 if (tls_type == GOT_TLS_IE_BOTH)
2140 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
2141 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
2142 || (tls_type & GOT_TLS_IE))
2143 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
2144 else if (GOT_TLS_GD_P (tls_type))
2145 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
2146 else if (! GOT_TLS_GDESC_P (tls_type)
2147 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2148 || h->root.type != bfd_link_hash_undefweak)
2150 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2151 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
2152 if (GOT_TLS_GDESC_P (tls_type))
2153 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2156 h->got.offset = (bfd_vma) -1;
2158 if (eh->dyn_relocs == NULL)
2161 /* In the shared -Bsymbolic case, discard space allocated for
2162 dynamic pc-relative relocs against symbols which turn out to be
2163 defined in regular objects. For the normal shared case, discard
2164 space for pc-relative relocs that have become local due to symbol
2165 visibility changes. */
2169 /* The only reloc that uses pc_count is R_386_PC32, which will
2170 appear on a call or on something like ".long foo - .". We
2171 want calls to protected symbols to resolve directly to the
2172 function rather than going via the plt. If people want
2173 function pointer comparisons to work as expected then they
2174 should avoid writing assembly like ".long foo - .". */
2175 if (SYMBOL_CALLS_LOCAL (info, h))
2177 struct elf_dyn_relocs **pp;
2179 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2181 p->count -= p->pc_count;
2190 if (htab->is_vxworks)
2192 struct elf_dyn_relocs **pp;
2193 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2195 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2202 /* Also discard relocs on undefined weak syms with non-default
2204 if (eh->dyn_relocs != NULL
2205 && h->root.type == bfd_link_hash_undefweak)
2207 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2208 eh->dyn_relocs = NULL;
2210 /* Make sure undefined weak symbols are output as a dynamic
2212 else if (h->dynindx == -1
2213 && !h->forced_local)
2215 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2220 else if (ELIMINATE_COPY_RELOCS)
2222 /* For the non-shared case, discard space for relocs against
2223 symbols which turn out to need copy relocs or are not
2229 || (htab->elf.dynamic_sections_created
2230 && (h->root.type == bfd_link_hash_undefweak
2231 || h->root.type == bfd_link_hash_undefined))))
2233 /* Make sure this symbol is output as a dynamic symbol.
2234 Undefined weak syms won't yet be marked as dynamic. */
2235 if (h->dynindx == -1
2236 && !h->forced_local)
2238 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2242 /* If that succeeded, we know we'll be keeping all the
2244 if (h->dynindx != -1)
2248 eh->dyn_relocs = NULL;
2253 /* Finally, allocate space. */
2254 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2258 sreloc = elf_section_data (p->sec)->sreloc;
2260 BFD_ASSERT (sreloc != NULL);
2261 sreloc->size += p->count * sizeof (Elf32_External_Rel);
2267 /* Allocate space in .plt, .got and associated reloc sections for
2268 local dynamic relocs. */
2271 elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2273 struct elf_link_hash_entry *h
2274 = (struct elf_link_hash_entry *) *slot;
2276 if (h->type != STT_GNU_IFUNC
2280 || h->root.type != bfd_link_hash_defined)
2283 return elf_i386_allocate_dynrelocs (h, inf);
2286 /* Find any dynamic relocs that apply to read-only sections. */
2289 elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2291 struct elf_i386_link_hash_entry *eh;
2292 struct elf_dyn_relocs *p;
2294 if (h->root.type == bfd_link_hash_warning)
2295 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2297 eh = (struct elf_i386_link_hash_entry *) h;
2298 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2300 asection *s = p->sec->output_section;
2302 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2304 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2306 info->flags |= DF_TEXTREL;
2308 /* Not an error, just cut short the traversal. */
2315 /* Set the sizes of the dynamic sections. */
2318 elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2319 struct bfd_link_info *info)
2321 struct elf_i386_link_hash_table *htab;
2327 htab = elf_i386_hash_table (info);
2328 dynobj = htab->elf.dynobj;
2332 if (htab->elf.dynamic_sections_created)
2334 /* Set the contents of the .interp section to the interpreter. */
2335 if (info->executable)
2337 s = bfd_get_section_by_name (dynobj, ".interp");
2340 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2341 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2345 /* Set up .got offsets for local syms, and space for local dynamic
2347 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2349 bfd_signed_vma *local_got;
2350 bfd_signed_vma *end_local_got;
2351 char *local_tls_type;
2352 bfd_vma *local_tlsdesc_gotent;
2353 bfd_size_type locsymcount;
2354 Elf_Internal_Shdr *symtab_hdr;
2357 if (! is_i386_elf (ibfd))
2360 for (s = ibfd->sections; s != NULL; s = s->next)
2362 struct elf_dyn_relocs *p;
2364 for (p = ((struct elf_dyn_relocs *)
2365 elf_section_data (s)->local_dynrel);
2369 if (!bfd_is_abs_section (p->sec)
2370 && bfd_is_abs_section (p->sec->output_section))
2372 /* Input section has been discarded, either because
2373 it is a copy of a linkonce section or due to
2374 linker script /DISCARD/, so we'll be discarding
2377 else if (htab->is_vxworks
2378 && strcmp (p->sec->output_section->name,
2381 /* Relocations in vxworks .tls_vars sections are
2382 handled specially by the loader. */
2384 else if (p->count != 0)
2386 srel = elf_section_data (p->sec)->sreloc;
2387 srel->size += p->count * sizeof (Elf32_External_Rel);
2388 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2389 info->flags |= DF_TEXTREL;
2394 local_got = elf_local_got_refcounts (ibfd);
2398 symtab_hdr = &elf_symtab_hdr (ibfd);
2399 locsymcount = symtab_hdr->sh_info;
2400 end_local_got = local_got + locsymcount;
2401 local_tls_type = elf_i386_local_got_tls_type (ibfd);
2402 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
2404 srel = htab->elf.srelgot;
2405 for (; local_got < end_local_got;
2406 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
2408 *local_tlsdesc_gotent = (bfd_vma) -1;
2411 if (GOT_TLS_GDESC_P (*local_tls_type))
2413 *local_tlsdesc_gotent = htab->elf.sgotplt->size
2414 - elf_i386_compute_jump_table_size (htab);
2415 htab->elf.sgotplt->size += 8;
2416 *local_got = (bfd_vma) -2;
2418 if (! GOT_TLS_GDESC_P (*local_tls_type)
2419 || GOT_TLS_GD_P (*local_tls_type))
2421 *local_got = s->size;
2423 if (GOT_TLS_GD_P (*local_tls_type)
2424 || *local_tls_type == GOT_TLS_IE_BOTH)
2428 || GOT_TLS_GD_ANY_P (*local_tls_type)
2429 || (*local_tls_type & GOT_TLS_IE))
2431 if (*local_tls_type == GOT_TLS_IE_BOTH)
2432 srel->size += 2 * sizeof (Elf32_External_Rel);
2433 else if (GOT_TLS_GD_P (*local_tls_type)
2434 || ! GOT_TLS_GDESC_P (*local_tls_type))
2435 srel->size += sizeof (Elf32_External_Rel);
2436 if (GOT_TLS_GDESC_P (*local_tls_type))
2437 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2441 *local_got = (bfd_vma) -1;
2445 if (htab->tls_ldm_got.refcount > 0)
2447 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2449 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2450 htab->elf.sgot->size += 8;
2451 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
2454 htab->tls_ldm_got.offset = -1;
2456 /* Allocate global sym .plt and .got entries, and space for global
2457 sym dynamic relocs. */
2458 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
2460 /* Allocate .plt and .got entries, and space for local symbols. */
2461 htab_traverse (htab->loc_hash_table,
2462 elf_i386_allocate_local_dynrelocs,
2465 /* For every jump slot reserved in the sgotplt, reloc_count is
2466 incremented. However, when we reserve space for TLS descriptors,
2467 it's not incremented, so in order to compute the space reserved
2468 for them, it suffices to multiply the reloc count by the jump
2470 if (htab->elf.srelplt)
2471 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2473 /* We now have determined the sizes of the various dynamic sections.
2474 Allocate memory for them. */
2476 for (s = dynobj->sections; s != NULL; s = s->next)
2478 bfd_boolean strip_section = TRUE;
2480 if ((s->flags & SEC_LINKER_CREATED) == 0)
2483 if (s == htab->elf.splt
2484 || s == htab->elf.sgot
2485 || s == htab->elf.sgotplt
2486 || s == htab->elf.iplt
2487 || s == htab->elf.igotplt
2488 || s == htab->sdynbss)
2490 /* Strip this section if we don't need it; see the
2492 /* We'd like to strip these sections if they aren't needed, but if
2493 we've exported dynamic symbols from them we must leave them.
2494 It's too late to tell BFD to get rid of the symbols. */
2496 if (htab->elf.hplt != NULL)
2497 strip_section = FALSE;
2499 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
2502 && s != htab->elf.srelplt
2503 && s != htab->srelplt2)
2506 /* We use the reloc_count field as a counter if we need
2507 to copy relocs into the output file. */
2512 /* It's not one of our sections, so don't allocate space. */
2518 /* If we don't need this section, strip it from the
2519 output file. This is mostly to handle .rel.bss and
2520 .rel.plt. We must create both sections in
2521 create_dynamic_sections, because they must be created
2522 before the linker maps input sections to output
2523 sections. The linker does that before
2524 adjust_dynamic_symbol is called, and it is that
2525 function which decides whether anything needs to go
2526 into these sections. */
2528 s->flags |= SEC_EXCLUDE;
2532 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2535 /* Allocate memory for the section contents. We use bfd_zalloc
2536 here in case unused entries are not reclaimed before the
2537 section's contents are written out. This should not happen,
2538 but this way if it does, we get a R_386_NONE reloc instead
2540 s->contents = bfd_zalloc (dynobj, s->size);
2541 if (s->contents == NULL)
2545 if (htab->elf.dynamic_sections_created)
2547 /* Add some entries to the .dynamic section. We fill in the
2548 values later, in elf_i386_finish_dynamic_sections, but we
2549 must add the entries now so that we get the correct size for
2550 the .dynamic section. The DT_DEBUG entry is filled in by the
2551 dynamic linker and used by the debugger. */
2552 #define add_dynamic_entry(TAG, VAL) \
2553 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2555 if (info->executable)
2557 if (!add_dynamic_entry (DT_DEBUG, 0))
2561 if (htab->elf.splt->size != 0)
2563 if (!add_dynamic_entry (DT_PLTGOT, 0)
2564 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2565 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2566 || !add_dynamic_entry (DT_JMPREL, 0))
2572 if (!add_dynamic_entry (DT_REL, 0)
2573 || !add_dynamic_entry (DT_RELSZ, 0)
2574 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
2577 /* If any dynamic relocs apply to a read-only section,
2578 then we need a DT_TEXTREL entry. */
2579 if ((info->flags & DF_TEXTREL) == 0)
2580 elf_link_hash_traverse (&htab->elf,
2581 elf_i386_readonly_dynrelocs, info);
2583 if ((info->flags & DF_TEXTREL) != 0)
2585 if (!add_dynamic_entry (DT_TEXTREL, 0))
2589 if (htab->is_vxworks
2590 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2593 #undef add_dynamic_entry
2599 elf_i386_always_size_sections (bfd *output_bfd,
2600 struct bfd_link_info *info)
2602 asection *tls_sec = elf_hash_table (info)->tls_sec;
2606 struct elf_link_hash_entry *tlsbase;
2608 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
2609 "_TLS_MODULE_BASE_",
2610 FALSE, FALSE, FALSE);
2612 if (tlsbase && tlsbase->type == STT_TLS)
2614 struct bfd_link_hash_entry *bh = NULL;
2615 const struct elf_backend_data *bed
2616 = get_elf_backend_data (output_bfd);
2618 if (!(_bfd_generic_link_add_one_symbol
2619 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
2620 tls_sec, 0, NULL, FALSE,
2621 bed->collect, &bh)))
2624 elf_i386_hash_table (info)->tls_module_base = bh;
2626 tlsbase = (struct elf_link_hash_entry *)bh;
2627 tlsbase->def_regular = 1;
2628 tlsbase->other = STV_HIDDEN;
2629 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
2636 /* Set the correct type for an x86 ELF section. We do this by the
2637 section name, which is a hack, but ought to work. */
2640 elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2641 Elf_Internal_Shdr *hdr,
2644 register const char *name;
2646 name = bfd_get_section_name (abfd, sec);
2648 /* This is an ugly, but unfortunately necessary hack that is
2649 needed when producing EFI binaries on x86. It tells
2650 elf.c:elf_fake_sections() not to consider ".reloc" as a section
2651 containing ELF relocation info. We need this hack in order to
2652 be able to generate ELF binaries that can be translated into
2653 EFI applications (which are essentially COFF objects). Those
2654 files contain a COFF ".reloc" section inside an ELFNN object,
2655 which would normally cause BFD to segfault because it would
2656 attempt to interpret this section as containing relocation
2657 entries for section "oc". With this hack enabled, ".reloc"
2658 will be treated as a normal data section, which will avoid the
2659 segfault. However, you won't be able to create an ELFNN binary
2660 with a section named "oc" that needs relocations, but that's
2661 the kind of ugly side-effects you get when detecting section
2662 types based on their names... In practice, this limitation is
2663 unlikely to bite. */
2664 if (strcmp (name, ".reloc") == 0)
2665 hdr->sh_type = SHT_PROGBITS;
2670 /* _TLS_MODULE_BASE_ needs to be treated especially when linking
2671 executables. Rather than setting it to the beginning of the TLS
2672 section, we have to set it to the end. This function may be called
2673 multiple times, it is idempotent. */
2676 elf_i386_set_tls_module_base (struct bfd_link_info *info)
2678 struct bfd_link_hash_entry *base;
2680 if (!info->executable)
2683 base = elf_i386_hash_table (info)->tls_module_base;
2688 base->u.def.value = elf_hash_table (info)->tls_size;
2691 /* Return the base VMA address which should be subtracted from real addresses
2692 when resolving @dtpoff relocation.
2693 This is PT_TLS segment p_vaddr. */
2696 elf_i386_dtpoff_base (struct bfd_link_info *info)
2698 /* If tls_sec is NULL, we should have signalled an error already. */
2699 if (elf_hash_table (info)->tls_sec == NULL)
2701 return elf_hash_table (info)->tls_sec->vma;
2704 /* Return the relocation value for @tpoff relocation
2705 if STT_TLS virtual address is ADDRESS. */
2708 elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
2710 struct elf_link_hash_table *htab = elf_hash_table (info);
2712 /* If tls_sec is NULL, we should have signalled an error already. */
2713 if (htab->tls_sec == NULL)
2715 return htab->tls_size + htab->tls_sec->vma - address;
2718 /* Relocate an i386 ELF section. */
2721 elf_i386_relocate_section (bfd *output_bfd,
2722 struct bfd_link_info *info,
2724 asection *input_section,
2726 Elf_Internal_Rela *relocs,
2727 Elf_Internal_Sym *local_syms,
2728 asection **local_sections)
2730 struct elf_i386_link_hash_table *htab;
2731 Elf_Internal_Shdr *symtab_hdr;
2732 struct elf_link_hash_entry **sym_hashes;
2733 bfd_vma *local_got_offsets;
2734 bfd_vma *local_tlsdesc_gotents;
2735 Elf_Internal_Rela *rel;
2736 Elf_Internal_Rela *relend;
2737 bfd_boolean is_vxworks_tls;
2739 BFD_ASSERT (is_i386_elf (input_bfd));
2741 htab = elf_i386_hash_table (info);
2742 symtab_hdr = &elf_symtab_hdr (input_bfd);
2743 sym_hashes = elf_sym_hashes (input_bfd);
2744 local_got_offsets = elf_local_got_offsets (input_bfd);
2745 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
2746 /* We have to handle relocations in vxworks .tls_vars sections
2747 specially, because the dynamic loader is 'weird'. */
2748 is_vxworks_tls = (htab->is_vxworks && info->shared
2749 && !strcmp (input_section->output_section->name,
2752 elf_i386_set_tls_module_base (info);
2755 relend = relocs + input_section->reloc_count;
2756 for (; rel < relend; rel++)
2758 unsigned int r_type;
2759 reloc_howto_type *howto;
2760 unsigned long r_symndx;
2761 struct elf_link_hash_entry *h;
2762 Elf_Internal_Sym *sym;
2764 bfd_vma off, offplt;
2766 bfd_boolean unresolved_reloc;
2767 bfd_reloc_status_type r;
2771 r_type = ELF32_R_TYPE (rel->r_info);
2772 if (r_type == R_386_GNU_VTINHERIT
2773 || r_type == R_386_GNU_VTENTRY)
2776 if ((indx = r_type) >= R_386_standard
2777 && ((indx = r_type - R_386_ext_offset) - R_386_standard
2778 >= R_386_ext - R_386_standard)
2779 && ((indx = r_type - R_386_tls_offset) - R_386_ext
2780 >= R_386_irelative - R_386_ext))
2782 (*_bfd_error_handler)
2783 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
2784 input_bfd, input_section, r_type);
2785 bfd_set_error (bfd_error_bad_value);
2788 howto = elf_howto_table + indx;
2790 r_symndx = ELF32_R_SYM (rel->r_info);
2794 unresolved_reloc = FALSE;
2795 if (r_symndx < symtab_hdr->sh_info)
2797 sym = local_syms + r_symndx;
2798 sec = local_sections[r_symndx];
2799 relocation = (sec->output_section->vma
2800 + sec->output_offset
2803 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
2804 && ((sec->flags & SEC_MERGE) != 0
2805 || (info->relocatable
2806 && sec->output_offset != 0)))
2809 bfd_byte *where = contents + rel->r_offset;
2811 switch (howto->size)
2814 addend = bfd_get_8 (input_bfd, where);
2815 if (howto->pc_relative)
2817 addend = (addend ^ 0x80) - 0x80;
2822 addend = bfd_get_16 (input_bfd, where);
2823 if (howto->pc_relative)
2825 addend = (addend ^ 0x8000) - 0x8000;
2830 addend = bfd_get_32 (input_bfd, where);
2831 if (howto->pc_relative)
2833 addend = (addend ^ 0x80000000) - 0x80000000;
2841 if (info->relocatable)
2842 addend += sec->output_offset;
2845 asection *msec = sec;
2846 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
2848 addend -= relocation;
2849 addend += msec->output_section->vma + msec->output_offset;
2852 switch (howto->size)
2855 /* FIXME: overflow checks. */
2856 if (howto->pc_relative)
2858 bfd_put_8 (input_bfd, addend, where);
2861 if (howto->pc_relative)
2863 bfd_put_16 (input_bfd, addend, where);
2866 if (howto->pc_relative)
2868 bfd_put_32 (input_bfd, addend, where);
2872 else if (ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2874 /* Relocate against local STT_GNU_IFUNC symbol. */
2875 h = elf_i386_get_local_sym_hash (htab, input_bfd,
2880 /* Set STT_GNU_IFUNC symbol value. */
2881 h->root.u.def.value = sym->st_value;
2882 h->root.u.def.section = sec;
2889 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2890 r_symndx, symtab_hdr, sym_hashes,
2892 unresolved_reloc, warned);
2895 if (sec != NULL && elf_discarded_section (sec))
2897 /* For relocs against symbols from removed linkonce sections,
2898 or sections discarded by a linker script, we just want the
2899 section contents zeroed. Avoid any special processing. */
2900 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2906 if (info->relocatable)
2909 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2910 it here if it is defined in a non-shared object. */
2912 && h->type == STT_GNU_IFUNC
2915 asection *plt, *gotplt, *base_got;
2918 if ((input_section->flags & SEC_ALLOC) == 0
2919 || h->plt.offset == (bfd_vma) -1)
2922 /* STT_GNU_IFUNC symbol must go through PLT. */
2923 if (htab->elf.splt != NULL)
2925 plt = htab->elf.splt;
2926 gotplt = htab->elf.sgotplt;
2930 plt = htab->elf.iplt;
2931 gotplt = htab->elf.igotplt;
2934 relocation = (plt->output_section->vma
2935 + plt->output_offset + h->plt.offset);
2940 (*_bfd_error_handler)
2941 (_("%B: relocation %s against STT_GNU_IFUNC "
2942 "symbol `%s' isn't handled by %s"), input_bfd,
2943 elf_howto_table[r_type].name,
2944 (h->root.root.string
2945 ? h->root.root.string : "a local symbol"),
2947 bfd_set_error (bfd_error_bad_value);
2951 /* Generate dynamic relcoation only when there is a
2952 non-GOF reference in a shared object. */
2953 if (info->shared && h->non_got_ref)
2955 Elf_Internal_Rela outrel;
2960 /* Need a dynamic relocation to get the real function
2962 offset = _bfd_elf_section_offset (output_bfd,
2966 if (offset == (bfd_vma) -1
2967 || offset == (bfd_vma) -2)
2970 outrel.r_offset = (input_section->output_section->vma
2971 + input_section->output_offset
2974 if (h->dynindx == -1
2976 || info->executable)
2978 /* This symbol is resolved locally. */
2979 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
2980 bfd_put_32 (output_bfd,
2981 (h->root.u.def.value
2982 + h->root.u.def.section->output_section->vma
2983 + h->root.u.def.section->output_offset),
2987 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2989 sreloc = htab->elf.irelifunc;
2990 loc = sreloc->contents;
2991 loc += (sreloc->reloc_count++
2992 * sizeof (Elf32_External_Rel));
2993 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2995 /* If this reloc is against an external symbol, we
2996 do not want to fiddle with the addend. Otherwise,
2997 we need to include the symbol value so that it
2998 becomes an addend for the dynamic reloc. For an
2999 internal symbol, we have updated addend. */
3008 base_got = htab->elf.sgot;
3009 off = h->got.offset;
3011 if (base_got == NULL)
3014 if (off == (bfd_vma) -1)
3016 /* We can't use h->got.offset here to save state, or
3017 even just remember the offset, as finish_dynamic_symbol
3018 would use that as offset into .got. */
3020 if (htab->elf.splt != NULL)
3022 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3023 off = (plt_index + 3) * 4;
3024 base_got = htab->elf.sgotplt;
3028 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
3029 off = plt_index * 4;
3030 base_got = htab->elf.igotplt;
3033 if (h->dynindx == -1
3037 /* This references the local defitionion. We must
3038 initialize this entry in the global offset table.
3039 Since the offset must always be a multiple of 8,
3040 we use the least significant bit to record
3041 whether we have initialized it already.
3043 When doing a dynamic link, we create a .rela.got
3044 relocation entry to initialize the value. This
3045 is done in the finish_dynamic_symbol routine. */
3050 bfd_put_32 (output_bfd, relocation,
3051 base_got->contents + off);
3058 /* Adjust for static executables. */
3059 if (htab->elf.splt == NULL)
3060 relocation += gotplt->output_offset;
3064 relocation = (base_got->output_section->vma
3065 + base_got->output_offset + off
3066 - gotplt->output_section->vma
3067 - gotplt->output_offset);
3068 /* Adjust for static executables. */
3069 if (htab->elf.splt == NULL)
3070 relocation += gotplt->output_offset;
3076 relocation -= (gotplt->output_section->vma
3077 + gotplt->output_offset);
3085 /* Relocation is to the entry for this symbol in the global
3087 if (htab->elf.sgot == NULL)
3094 off = h->got.offset;
3095 dyn = htab->elf.dynamic_sections_created;
3096 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3098 && SYMBOL_REFERENCES_LOCAL (info, h))
3099 || (ELF_ST_VISIBILITY (h->other)
3100 && h->root.type == bfd_link_hash_undefweak))
3102 /* This is actually a static link, or it is a
3103 -Bsymbolic link and the symbol is defined
3104 locally, or the symbol was forced to be local
3105 because of a version file. We must initialize
3106 this entry in the global offset table. Since the
3107 offset must always be a multiple of 4, we use the
3108 least significant bit to record whether we have
3109 initialized it already.
3111 When doing a dynamic link, we create a .rel.got
3112 relocation entry to initialize the value. This
3113 is done in the finish_dynamic_symbol routine. */
3118 bfd_put_32 (output_bfd, relocation,
3119 htab->elf.sgot->contents + off);
3124 unresolved_reloc = FALSE;
3128 if (local_got_offsets == NULL)
3131 off = local_got_offsets[r_symndx];
3133 /* The offset must always be a multiple of 4. We use
3134 the least significant bit to record whether we have
3135 already generated the necessary reloc. */
3140 bfd_put_32 (output_bfd, relocation,
3141 htab->elf.sgot->contents + off);
3146 Elf_Internal_Rela outrel;
3149 s = htab->elf.srelgot;
3153 outrel.r_offset = (htab->elf.sgot->output_section->vma
3154 + htab->elf.sgot->output_offset
3156 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3158 loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
3159 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3162 local_got_offsets[r_symndx] |= 1;
3166 if (off >= (bfd_vma) -2)
3169 relocation = htab->elf.sgot->output_section->vma
3170 + htab->elf.sgot->output_offset + off
3171 - htab->elf.sgotplt->output_section->vma
3172 - htab->elf.sgotplt->output_offset;
3176 /* Relocation is relative to the start of the global offset
3179 /* Check to make sure it isn't a protected function symbol
3180 for shared library since it may not be local when used
3181 as function address. We also need to make sure that a
3182 symbol is defined locally. */
3183 if (info->shared && h)
3185 if (!h->def_regular)
3189 switch (ELF_ST_VISIBILITY (h->other))
3192 v = _("hidden symbol");
3195 v = _("internal symbol");
3198 v = _("protected symbol");
3205 (*_bfd_error_handler)
3206 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3207 input_bfd, v, h->root.root.string);
3208 bfd_set_error (bfd_error_bad_value);
3211 else if (!info->executable
3212 && h->type == STT_FUNC
3213 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3215 (*_bfd_error_handler)
3216 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3217 input_bfd, h->root.root.string);
3218 bfd_set_error (bfd_error_bad_value);
3223 /* Note that sgot is not involved in this
3224 calculation. We always want the start of .got.plt. If we
3225 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
3226 permitted by the ABI, we might have to change this
3228 relocation -= htab->elf.sgotplt->output_section->vma
3229 + htab->elf.sgotplt->output_offset;
3233 /* Use global offset table as symbol value. */
3234 relocation = htab->elf.sgotplt->output_section->vma
3235 + htab->elf.sgotplt->output_offset;
3236 unresolved_reloc = FALSE;
3240 /* Relocation is to the entry for this symbol in the
3241 procedure linkage table. */
3243 /* Resolve a PLT32 reloc against a local symbol directly,
3244 without using the procedure linkage table. */
3248 if (h->plt.offset == (bfd_vma) -1
3249 || htab->elf.splt == NULL)
3251 /* We didn't make a PLT entry for this symbol. This
3252 happens when statically linking PIC code, or when
3253 using -Bsymbolic. */
3257 relocation = (htab->elf.splt->output_section->vma
3258 + htab->elf.splt->output_offset
3260 unresolved_reloc = FALSE;
3265 if ((input_section->flags & SEC_ALLOC) == 0
3271 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3272 || h->root.type != bfd_link_hash_undefweak)
3273 && (r_type != R_386_PC32
3274 || !SYMBOL_CALLS_LOCAL (info, h)))
3275 || (ELIMINATE_COPY_RELOCS
3282 || h->root.type == bfd_link_hash_undefweak
3283 || h->root.type == bfd_link_hash_undefined)))
3285 Elf_Internal_Rela outrel;
3287 bfd_boolean skip, relocate;
3290 /* When generating a shared object, these relocations
3291 are copied into the output file to be resolved at run
3298 _bfd_elf_section_offset (output_bfd, info, input_section,
3300 if (outrel.r_offset == (bfd_vma) -1)
3302 else if (outrel.r_offset == (bfd_vma) -2)
3303 skip = TRUE, relocate = TRUE;
3304 outrel.r_offset += (input_section->output_section->vma
3305 + input_section->output_offset);
3308 memset (&outrel, 0, sizeof outrel);
3311 && (r_type == R_386_PC32
3313 || !SYMBOLIC_BIND (info, h)
3314 || !h->def_regular))
3315 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3318 /* This symbol is local, or marked to become local. */
3320 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3323 sreloc = elf_section_data (input_section)->sreloc;
3325 BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
3327 loc = sreloc->contents;
3328 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3330 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3332 /* If this reloc is against an external symbol, we do
3333 not want to fiddle with the addend. Otherwise, we
3334 need to include the symbol value so that it becomes
3335 an addend for the dynamic reloc. */
3344 Elf_Internal_Rela outrel;
3348 outrel.r_offset = rel->r_offset
3349 + input_section->output_section->vma
3350 + input_section->output_offset;
3351 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3352 sreloc = elf_section_data (input_section)->sreloc;
3355 loc = sreloc->contents;
3356 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3357 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3362 case R_386_TLS_GOTDESC:
3363 case R_386_TLS_DESC_CALL:
3364 case R_386_TLS_IE_32:
3365 case R_386_TLS_GOTIE:
3366 tls_type = GOT_UNKNOWN;
3367 if (h == NULL && local_got_offsets)
3368 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3370 tls_type = elf_i386_hash_entry(h)->tls_type;
3371 if (tls_type == GOT_TLS_IE)
3372 tls_type = GOT_TLS_IE_NEG;
3374 if (! elf_i386_tls_transition (info, input_bfd,
3375 input_section, contents,
3376 symtab_hdr, sym_hashes,
3377 &r_type, tls_type, rel,
3381 if (r_type == R_386_TLS_LE_32)
3383 BFD_ASSERT (! unresolved_reloc);
3384 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3389 /* GD->LE transition. */
3390 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3393 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3395 movl %gs:0, %eax; subl $foo@tpoff, %eax
3396 (6 byte form of subl). */
3397 memcpy (contents + rel->r_offset - 3,
3398 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3399 roff = rel->r_offset + 5;
3403 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3405 movl %gs:0, %eax; subl $foo@tpoff, %eax
3406 (6 byte form of subl). */
3407 memcpy (contents + rel->r_offset - 2,
3408 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3409 roff = rel->r_offset + 6;
3411 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
3413 /* Skip R_386_PC32/R_386_PLT32. */
3417 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3419 /* GDesc -> LE transition.
3420 It's originally something like:
3421 leal x@tlsdesc(%ebx), %eax
3425 Registers other than %eax may be set up here. */
3430 roff = rel->r_offset;
3431 val = bfd_get_8 (input_bfd, contents + roff - 1);
3433 /* Now modify the instruction as appropriate. */
3434 /* aoliva FIXME: remove the above and xor the byte
3436 bfd_put_8 (output_bfd, val ^ 0x86,
3437 contents + roff - 1);
3438 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3442 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3444 /* GDesc -> LE transition.
3452 roff = rel->r_offset;
3453 bfd_put_8 (output_bfd, 0x66, contents + roff);
3454 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3457 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
3461 /* IE->LE transition:
3462 Originally it can be one of:
3470 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3473 /* movl foo, %eax. */
3474 bfd_put_8 (output_bfd, 0xb8,
3475 contents + rel->r_offset - 1);
3481 type = bfd_get_8 (input_bfd,
3482 contents + rel->r_offset - 2);
3487 bfd_put_8 (output_bfd, 0xc7,
3488 contents + rel->r_offset - 2);
3489 bfd_put_8 (output_bfd,
3490 0xc0 | ((val >> 3) & 7),
3491 contents + rel->r_offset - 1);
3495 bfd_put_8 (output_bfd, 0x81,
3496 contents + rel->r_offset - 2);
3497 bfd_put_8 (output_bfd,
3498 0xc0 | ((val >> 3) & 7),
3499 contents + rel->r_offset - 1);
3506 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3507 contents + rel->r_offset);
3512 unsigned int val, type;
3514 /* {IE_32,GOTIE}->LE transition:
3515 Originally it can be one of:
3516 subl foo(%reg1), %reg2
3517 movl foo(%reg1), %reg2
3518 addl foo(%reg1), %reg2
3521 movl $foo, %reg2 (6 byte form)
3522 addl $foo, %reg2. */
3523 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3524 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3528 bfd_put_8 (output_bfd, 0xc7,
3529 contents + rel->r_offset - 2);
3530 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3531 contents + rel->r_offset - 1);
3533 else if (type == 0x2b)
3536 bfd_put_8 (output_bfd, 0x81,
3537 contents + rel->r_offset - 2);
3538 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3539 contents + rel->r_offset - 1);
3541 else if (type == 0x03)
3544 bfd_put_8 (output_bfd, 0x81,
3545 contents + rel->r_offset - 2);
3546 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3547 contents + rel->r_offset - 1);
3551 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
3552 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3553 contents + rel->r_offset);
3555 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
3556 contents + rel->r_offset);
3561 if (htab->elf.sgot == NULL)
3566 off = h->got.offset;
3567 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3571 if (local_got_offsets == NULL)
3574 off = local_got_offsets[r_symndx];
3575 offplt = local_tlsdesc_gotents[r_symndx];
3582 Elf_Internal_Rela outrel;
3587 if (htab->elf.srelgot == NULL)
3590 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3592 if (GOT_TLS_GDESC_P (tls_type))
3594 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
3595 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
3596 <= htab->elf.sgotplt->size);
3597 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3598 + htab->elf.sgotplt->output_offset
3600 + htab->sgotplt_jump_table_size);
3601 sreloc = htab->elf.srelplt;
3602 loc = sreloc->contents;
3603 loc += (htab->next_tls_desc_index++
3604 * sizeof (Elf32_External_Rel));
3605 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3606 <= sreloc->contents + sreloc->size);
3607 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3610 BFD_ASSERT (! unresolved_reloc);
3611 bfd_put_32 (output_bfd,
3612 relocation - elf_i386_dtpoff_base (info),
3613 htab->elf.sgotplt->contents + offplt
3614 + htab->sgotplt_jump_table_size + 4);
3618 bfd_put_32 (output_bfd, 0,
3619 htab->elf.sgotplt->contents + offplt
3620 + htab->sgotplt_jump_table_size + 4);
3624 sreloc = htab->elf.srelgot;
3626 outrel.r_offset = (htab->elf.sgot->output_section->vma
3627 + htab->elf.sgot->output_offset + off);
3629 if (GOT_TLS_GD_P (tls_type))
3630 dr_type = R_386_TLS_DTPMOD32;
3631 else if (GOT_TLS_GDESC_P (tls_type))
3633 else if (tls_type == GOT_TLS_IE_POS)
3634 dr_type = R_386_TLS_TPOFF;
3636 dr_type = R_386_TLS_TPOFF32;
3638 if (dr_type == R_386_TLS_TPOFF && indx == 0)
3639 bfd_put_32 (output_bfd,
3640 relocation - elf_i386_dtpoff_base (info),
3641 htab->elf.sgot->contents + off);
3642 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
3643 bfd_put_32 (output_bfd,
3644 elf_i386_dtpoff_base (info) - relocation,
3645 htab->elf.sgot->contents + off);
3646 else if (dr_type != R_386_TLS_DESC)
3647 bfd_put_32 (output_bfd, 0,
3648 htab->elf.sgot->contents + off);
3649 outrel.r_info = ELF32_R_INFO (indx, dr_type);
3651 loc = sreloc->contents;
3652 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3653 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3654 <= sreloc->contents + sreloc->size);
3655 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3657 if (GOT_TLS_GD_P (tls_type))
3661 BFD_ASSERT (! unresolved_reloc);
3662 bfd_put_32 (output_bfd,
3663 relocation - elf_i386_dtpoff_base (info),
3664 htab->elf.sgot->contents + off + 4);
3668 bfd_put_32 (output_bfd, 0,
3669 htab->elf.sgot->contents + off + 4);
3670 outrel.r_info = ELF32_R_INFO (indx,
3671 R_386_TLS_DTPOFF32);
3672 outrel.r_offset += 4;
3673 sreloc->reloc_count++;
3674 loc += sizeof (Elf32_External_Rel);
3675 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3676 <= sreloc->contents + sreloc->size);
3677 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3680 else if (tls_type == GOT_TLS_IE_BOTH)
3682 bfd_put_32 (output_bfd,
3684 ? relocation - elf_i386_dtpoff_base (info)
3686 htab->elf.sgot->contents + off + 4);
3687 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3688 outrel.r_offset += 4;
3689 sreloc->reloc_count++;
3690 loc += sizeof (Elf32_External_Rel);
3691 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3698 local_got_offsets[r_symndx] |= 1;
3701 if (off >= (bfd_vma) -2
3702 && ! GOT_TLS_GDESC_P (tls_type))
3704 if (r_type == R_386_TLS_GOTDESC
3705 || r_type == R_386_TLS_DESC_CALL)
3707 relocation = htab->sgotplt_jump_table_size + offplt;
3708 unresolved_reloc = FALSE;
3710 else if (r_type == ELF32_R_TYPE (rel->r_info))
3712 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
3713 + htab->elf.sgotplt->output_offset;
3714 relocation = htab->elf.sgot->output_section->vma
3715 + htab->elf.sgot->output_offset + off - g_o_t;
3716 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
3717 && tls_type == GOT_TLS_IE_BOTH)
3719 if (r_type == R_386_TLS_IE)
3720 relocation += g_o_t;
3721 unresolved_reloc = FALSE;
3723 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3725 unsigned int val, type;
3728 /* GD->IE transition. */
3729 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3730 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3733 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3735 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
3737 roff = rel->r_offset - 3;
3741 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3743 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
3744 roff = rel->r_offset - 2;
3746 memcpy (contents + roff,
3747 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3748 contents[roff + 7] = 0x80 | (val & 7);
3749 /* If foo is used only with foo@gotntpoff(%reg) and
3750 foo@indntpoff, but not with foo@gottpoff(%reg), change
3751 subl $foo@gottpoff(%reg), %eax
3753 addl $foo@gotntpoff(%reg), %eax. */
3754 if (tls_type == GOT_TLS_IE_POS)
3755 contents[roff + 6] = 0x03;
3756 bfd_put_32 (output_bfd,
3757 htab->elf.sgot->output_section->vma
3758 + htab->elf.sgot->output_offset + off
3759 - htab->elf.sgotplt->output_section->vma
3760 - htab->elf.sgotplt->output_offset,
3761 contents + roff + 8);
3762 /* Skip R_386_PLT32. */
3766 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3768 /* GDesc -> IE transition.
3769 It's originally something like:
3770 leal x@tlsdesc(%ebx), %eax
3773 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
3775 movl x@gottpoff(%ebx), %eax # before negl %eax
3777 Registers other than %eax may be set up here. */
3781 /* First, make sure it's a leal adding ebx to a 32-bit
3782 offset into any register, although it's probably
3783 almost always going to be eax. */
3784 roff = rel->r_offset;
3786 /* Now modify the instruction as appropriate. */
3787 /* To turn a leal into a movl in the form we use it, it
3788 suffices to change the first byte from 0x8d to 0x8b.
3789 aoliva FIXME: should we decide to keep the leal, all
3790 we have to do is remove the statement below, and
3791 adjust the relaxation of R_386_TLS_DESC_CALL. */
3792 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3794 if (tls_type == GOT_TLS_IE_BOTH)
3797 bfd_put_32 (output_bfd,
3798 htab->elf.sgot->output_section->vma
3799 + htab->elf.sgot->output_offset + off
3800 - htab->elf.sgotplt->output_section->vma
3801 - htab->elf.sgotplt->output_offset,
3805 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3807 /* GDesc -> IE transition.
3815 depending on how we transformed the TLS_GOTDESC above.
3820 roff = rel->r_offset;
3822 /* Now modify the instruction as appropriate. */
3823 if (tls_type != GOT_TLS_IE_NEG)
3826 bfd_put_8 (output_bfd, 0x66, contents + roff);
3827 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3832 bfd_put_8 (output_bfd, 0xf7, contents + roff);
3833 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
3843 if (! elf_i386_tls_transition (info, input_bfd,
3844 input_section, contents,
3845 symtab_hdr, sym_hashes,
3846 &r_type, GOT_UNKNOWN, rel,
3850 if (r_type != R_386_TLS_LDM)
3852 /* LD->LE transition:
3853 leal foo(%reg), %eax; call ___tls_get_addr.
3855 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
3856 BFD_ASSERT (r_type == R_386_TLS_LE_32);
3857 memcpy (contents + rel->r_offset - 2,
3858 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
3859 /* Skip R_386_PC32/R_386_PLT32. */
3864 if (htab->elf.sgot == NULL)
3867 off = htab->tls_ldm_got.offset;
3872 Elf_Internal_Rela outrel;
3875 if (htab->elf.srelgot == NULL)
3878 outrel.r_offset = (htab->elf.sgot->output_section->vma
3879 + htab->elf.sgot->output_offset + off);
3881 bfd_put_32 (output_bfd, 0,
3882 htab->elf.sgot->contents + off);
3883 bfd_put_32 (output_bfd, 0,
3884 htab->elf.sgot->contents + off + 4);
3885 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
3886 loc = htab->elf.srelgot->contents;
3887 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
3888 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3889 htab->tls_ldm_got.offset |= 1;
3891 relocation = htab->elf.sgot->output_section->vma
3892 + htab->elf.sgot->output_offset + off
3893 - htab->elf.sgotplt->output_section->vma
3894 - htab->elf.sgotplt->output_offset;
3895 unresolved_reloc = FALSE;
3898 case R_386_TLS_LDO_32:
3899 if (info->shared || (input_section->flags & SEC_CODE) == 0)
3900 relocation -= elf_i386_dtpoff_base (info);
3902 /* When converting LDO to LE, we must negate. */
3903 relocation = -elf_i386_tpoff (info, relocation);
3906 case R_386_TLS_LE_32:
3910 Elf_Internal_Rela outrel;
3915 outrel.r_offset = rel->r_offset
3916 + input_section->output_section->vma
3917 + input_section->output_offset;
3918 if (h != NULL && h->dynindx != -1)
3922 if (r_type == R_386_TLS_LE_32)
3923 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
3925 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3926 sreloc = elf_section_data (input_section)->sreloc;
3929 loc = sreloc->contents;
3930 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3931 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3934 else if (r_type == R_386_TLS_LE_32)
3935 relocation = elf_i386_dtpoff_base (info) - relocation;
3937 relocation -= elf_i386_dtpoff_base (info);
3939 else if (r_type == R_386_TLS_LE_32)
3940 relocation = elf_i386_tpoff (info, relocation);
3942 relocation = -elf_i386_tpoff (info, relocation);
3949 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3950 because such sections are not SEC_ALLOC and thus ld.so will
3951 not process them. */
3952 if (unresolved_reloc
3953 && !((input_section->flags & SEC_DEBUGGING) != 0
3956 (*_bfd_error_handler)
3957 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3960 (long) rel->r_offset,
3962 h->root.root.string);
3967 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3968 contents, rel->r_offset,
3971 if (r != bfd_reloc_ok)
3976 name = h->root.root.string;
3979 name = bfd_elf_string_from_elf_section (input_bfd,
3980 symtab_hdr->sh_link,
3985 name = bfd_section_name (input_bfd, sec);
3988 if (r == bfd_reloc_overflow)
3990 if (! ((*info->callbacks->reloc_overflow)
3991 (info, (h ? &h->root : NULL), name, howto->name,
3992 (bfd_vma) 0, input_bfd, input_section,
3998 (*_bfd_error_handler)
3999 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4000 input_bfd, input_section,
4001 (long) rel->r_offset, name, (int) r);
4010 /* Finish up dynamic symbol handling. We set the contents of various
4011 dynamic sections here. */
4014 elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4015 struct bfd_link_info *info,
4016 struct elf_link_hash_entry *h,
4017 Elf_Internal_Sym *sym)
4019 struct elf_i386_link_hash_table *htab;
4021 htab = elf_i386_hash_table (info);
4023 if (h->plt.offset != (bfd_vma) -1)
4027 Elf_Internal_Rela rel;
4029 asection *plt, *gotplt, *relplt;
4031 /* When building a static executable, use .iplt, .igot.plt and
4032 .rel.iplt sections for STT_GNU_IFUNC symbols. */
4033 if (htab->elf.splt != NULL)
4035 plt = htab->elf.splt;
4036 gotplt = htab->elf.sgotplt;
4037 relplt = htab->elf.srelplt;
4041 plt = htab->elf.iplt;
4042 gotplt = htab->elf.igotplt;
4043 relplt = htab->elf.irelplt;
4046 /* This symbol has an entry in the procedure linkage table. Set
4049 if ((h->dynindx == -1
4050 && !((h->forced_local || info->executable)
4052 && h->type == STT_GNU_IFUNC))
4058 /* Get the index in the procedure linkage table which
4059 corresponds to this symbol. This is the index of this symbol
4060 in all the symbols for which we are making plt entries. The
4061 first entry in the procedure linkage table is reserved.
4063 Get the offset into the .got table of the entry that
4064 corresponds to this function. Each .got entry is 4 bytes.
4065 The first three are reserved.
4067 For static executables, we don't reserve anything. */
4069 if (plt == htab->elf.splt)
4071 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
4072 got_offset = (plt_index + 3) * 4;
4076 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
4077 got_offset = plt_index * 4;
4080 /* Fill in the entry in the procedure linkage table. */
4083 memcpy (plt->contents + h->plt.offset, elf_i386_plt_entry,
4085 bfd_put_32 (output_bfd,
4086 (gotplt->output_section->vma
4087 + gotplt->output_offset
4089 plt->contents + h->plt.offset + 2);
4091 if (htab->is_vxworks)
4093 int s, k, reloc_index;
4095 /* Create the R_386_32 relocation referencing the GOT
4096 for this PLT entry. */
4098 /* S: Current slot number (zero-based). */
4099 s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
4100 /* K: Number of relocations for PLTResolve. */
4102 k = PLTRESOLVE_RELOCS_SHLIB;
4104 k = PLTRESOLVE_RELOCS;
4105 /* Skip the PLTresolve relocations, and the relocations for
4106 the other PLT slots. */
4107 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4108 loc = (htab->srelplt2->contents + reloc_index
4109 * sizeof (Elf32_External_Rel));
4111 rel.r_offset = (htab->elf.splt->output_section->vma
4112 + htab->elf.splt->output_offset
4113 + h->plt.offset + 2),
4114 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4115 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4117 /* Create the R_386_32 relocation referencing the beginning of
4118 the PLT for this GOT entry. */
4119 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4120 + htab->elf.sgotplt->output_offset
4122 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
4123 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4124 loc + sizeof (Elf32_External_Rel));
4129 memcpy (plt->contents + h->plt.offset, elf_i386_pic_plt_entry,
4131 bfd_put_32 (output_bfd, got_offset,
4132 plt->contents + h->plt.offset + 2);
4135 /* Don't fill PLT entry for static executables. */
4136 if (plt == htab->elf.splt)
4138 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4139 plt->contents + h->plt.offset + 7);
4140 bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
4141 plt->contents + h->plt.offset + 12);
4144 /* Fill in the entry in the global offset table. */
4145 bfd_put_32 (output_bfd,
4146 (plt->output_section->vma
4147 + plt->output_offset
4150 gotplt->contents + got_offset);
4152 /* Fill in the entry in the .rel.plt section. */
4153 rel.r_offset = (gotplt->output_section->vma
4154 + gotplt->output_offset
4156 if (h->dynindx == -1
4157 || ((info->executable
4158 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4160 && h->type == STT_GNU_IFUNC))
4162 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4163 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4164 in the .got.plt section. */
4165 bfd_put_32 (output_bfd,
4166 (h->root.u.def.value
4167 + h->root.u.def.section->output_section->vma
4168 + h->root.u.def.section->output_offset),
4169 gotplt->contents + got_offset);
4170 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
4173 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4174 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
4175 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4177 if (!h->def_regular)
4179 /* Mark the symbol as undefined, rather than as defined in
4180 the .plt section. Leave the value if there were any
4181 relocations where pointer equality matters (this is a clue
4182 for the dynamic linker, to make function pointer
4183 comparisons work between an application and shared
4184 library), otherwise set it to zero. If a function is only
4185 called from a binary, there is no need to slow down
4186 shared libraries because of that. */
4187 sym->st_shndx = SHN_UNDEF;
4188 if (!h->pointer_equality_needed)
4193 if (h->got.offset != (bfd_vma) -1
4194 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
4195 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
4197 Elf_Internal_Rela rel;
4200 /* This symbol has an entry in the global offset table. Set it
4203 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
4206 rel.r_offset = (htab->elf.sgot->output_section->vma
4207 + htab->elf.sgot->output_offset
4208 + (h->got.offset & ~(bfd_vma) 1));
4210 /* If this is a static link, or it is a -Bsymbolic link and the
4211 symbol is defined locally or was forced to be local because
4212 of a version file, we just want to emit a RELATIVE reloc.
4213 The entry in the global offset table will already have been
4214 initialized in the relocate_section function. */
4216 && h->type == STT_GNU_IFUNC)
4220 /* Generate R_386_GLOB_DAT. */
4225 if (!h->pointer_equality_needed)
4228 /* For non-shared object, we can't use .got.plt, which
4229 contains the real function addres if we need pointer
4230 equality. We load the GOT entry with the PLT entry. */
4231 asection *plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4232 bfd_put_32 (output_bfd,
4233 (plt->output_section->vma
4234 + plt->output_offset + h->plt.offset),
4235 htab->elf.sgot->contents + h->got.offset);
4239 else if (info->shared
4240 && SYMBOL_REFERENCES_LOCAL (info, h))
4242 BFD_ASSERT((h->got.offset & 1) != 0);
4243 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4247 BFD_ASSERT((h->got.offset & 1) == 0);
4249 bfd_put_32 (output_bfd, (bfd_vma) 0,
4250 htab->elf.sgot->contents + h->got.offset);
4251 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4254 loc = htab->elf.srelgot->contents;
4255 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
4256 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4261 Elf_Internal_Rela rel;
4264 /* This symbol needs a copy reloc. Set it up. */
4266 if (h->dynindx == -1
4267 || (h->root.type != bfd_link_hash_defined
4268 && h->root.type != bfd_link_hash_defweak)
4269 || htab->srelbss == NULL)
4272 rel.r_offset = (h->root.u.def.value
4273 + h->root.u.def.section->output_section->vma
4274 + h->root.u.def.section->output_offset);
4275 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
4276 loc = htab->srelbss->contents;
4277 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
4278 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4281 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
4282 be NULL for local symbols.
4284 On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it
4285 is relative to the ".got" section. */
4287 && (strcmp (h->root.root.string, "_DYNAMIC") == 0
4288 || (!htab->is_vxworks && h == htab->elf.hgot)))
4289 sym->st_shndx = SHN_ABS;
4294 /* Finish up local dynamic symbol handling. We set the contents of
4295 various dynamic sections here. */
4298 elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4300 struct elf_link_hash_entry *h
4301 = (struct elf_link_hash_entry *) *slot;
4302 struct bfd_link_info *info
4303 = (struct bfd_link_info *) inf;
4305 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4309 /* Used to decide how to sort relocs in an optimal manner for the
4310 dynamic linker, before writing them out. */
4312 static enum elf_reloc_type_class
4313 elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
4315 switch (ELF32_R_TYPE (rela->r_info))
4317 case R_386_RELATIVE:
4318 return reloc_class_relative;
4319 case R_386_JUMP_SLOT:
4320 return reloc_class_plt;
4322 return reloc_class_copy;
4324 return reloc_class_normal;
4328 /* Finish up the dynamic sections. */
4331 elf_i386_finish_dynamic_sections (bfd *output_bfd,
4332 struct bfd_link_info *info)
4334 struct elf_i386_link_hash_table *htab;
4338 htab = elf_i386_hash_table (info);
4339 dynobj = htab->elf.dynobj;
4340 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4342 if (htab->elf.dynamic_sections_created)
4344 Elf32_External_Dyn *dyncon, *dynconend;
4346 if (sdyn == NULL || htab->elf.sgot == NULL)
4349 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4350 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4351 for (; dyncon < dynconend; dyncon++)
4353 Elf_Internal_Dyn dyn;
4356 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4361 if (htab->is_vxworks
4362 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4367 s = htab->elf.sgotplt;
4368 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4372 s = htab->elf.srelplt;
4373 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4377 s = htab->elf.srelplt;
4378 dyn.d_un.d_val = s->size;
4382 /* My reading of the SVR4 ABI indicates that the
4383 procedure linkage table relocs (DT_JMPREL) should be
4384 included in the overall relocs (DT_REL). This is
4385 what Solaris does. However, UnixWare can not handle
4386 that case. Therefore, we override the DT_RELSZ entry
4387 here to make it not include the JMPREL relocs. */
4388 s = htab->elf.srelplt;
4391 dyn.d_un.d_val -= s->size;
4395 /* We may not be using the standard ELF linker script.
4396 If .rel.plt is the first .rel section, we adjust
4397 DT_REL to not include it. */
4398 s = htab->elf.srelplt;
4401 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4403 dyn.d_un.d_ptr += s->size;
4407 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4410 /* Fill in the first entry in the procedure linkage table. */
4411 if (htab->elf.splt && htab->elf.splt->size > 0)
4415 memcpy (htab->elf.splt->contents, elf_i386_pic_plt0_entry,
4416 sizeof (elf_i386_pic_plt0_entry));
4417 memset (htab->elf.splt->contents + sizeof (elf_i386_pic_plt0_entry),
4418 htab->plt0_pad_byte,
4419 PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry));
4423 memcpy (htab->elf.splt->contents, elf_i386_plt0_entry,
4424 sizeof(elf_i386_plt0_entry));
4425 memset (htab->elf.splt->contents + sizeof (elf_i386_plt0_entry),
4426 htab->plt0_pad_byte,
4427 PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry));
4428 bfd_put_32 (output_bfd,
4429 (htab->elf.sgotplt->output_section->vma
4430 + htab->elf.sgotplt->output_offset
4432 htab->elf.splt->contents + 2);
4433 bfd_put_32 (output_bfd,
4434 (htab->elf.sgotplt->output_section->vma
4435 + htab->elf.sgotplt->output_offset
4437 htab->elf.splt->contents + 8);
4439 if (htab->is_vxworks)
4441 Elf_Internal_Rela rel;
4443 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4444 On IA32 we use REL relocations so the addend goes in
4445 the PLT directly. */
4446 rel.r_offset = (htab->elf.splt->output_section->vma
4447 + htab->elf.splt->output_offset
4449 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4450 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4451 htab->srelplt2->contents);
4452 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
4453 rel.r_offset = (htab->elf.splt->output_section->vma
4454 + htab->elf.splt->output_offset
4456 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4457 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4458 htab->srelplt2->contents +
4459 sizeof (Elf32_External_Rel));
4463 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4464 really seem like the right value. */
4465 elf_section_data (htab->elf.splt->output_section)
4466 ->this_hdr.sh_entsize = 4;
4468 /* Correct the .rel.plt.unloaded relocations. */
4469 if (htab->is_vxworks && !info->shared)
4471 int num_plts = (htab->elf.splt->size / PLT_ENTRY_SIZE) - 1;
4474 p = htab->srelplt2->contents;
4476 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4478 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4480 for (; num_plts; num_plts--)
4482 Elf_Internal_Rela rel;
4483 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4484 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4485 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4486 p += sizeof (Elf32_External_Rel);
4488 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4489 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
4490 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4491 p += sizeof (Elf32_External_Rel);
4497 if (htab->elf.sgotplt)
4499 /* Fill in the first three entries in the global offset table. */
4500 if (htab->elf.sgotplt->size > 0)
4502 bfd_put_32 (output_bfd,
4504 : sdyn->output_section->vma + sdyn->output_offset),
4505 htab->elf.sgotplt->contents);
4506 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4507 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
4510 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
4513 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4514 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
4516 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4517 htab_traverse (htab->loc_hash_table,
4518 elf_i386_finish_local_dynamic_symbol,
4524 /* Return address for Ith PLT stub in section PLT, for relocation REL
4525 or (bfd_vma) -1 if it should not be included. */
4528 elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4529 const arelent *rel ATTRIBUTE_UNUSED)
4531 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
4534 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
4537 elf_i386_hash_symbol (struct elf_link_hash_entry *h)
4539 if (h->plt.offset != (bfd_vma) -1
4541 && !h->pointer_equality_needed)
4544 return _bfd_elf_hash_symbol (h);
4547 /* Hook called by the linker routine which adds symbols from an object
4551 elf_i386_add_symbol_hook (bfd * abfd ATTRIBUTE_UNUSED,
4552 struct bfd_link_info * info ATTRIBUTE_UNUSED,
4553 Elf_Internal_Sym * sym,
4554 const char ** namep ATTRIBUTE_UNUSED,
4555 flagword * flagsp ATTRIBUTE_UNUSED,
4556 asection ** secp ATTRIBUTE_UNUSED,
4557 bfd_vma * valp ATTRIBUTE_UNUSED)
4559 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
4560 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
4565 #define TARGET_LITTLE_SYM bfd_elf32_i386_vec
4566 #define TARGET_LITTLE_NAME "elf32-i386"
4567 #define ELF_ARCH bfd_arch_i386
4568 #define ELF_MACHINE_CODE EM_386
4569 #define ELF_MAXPAGESIZE 0x1000
4571 #define elf_backend_can_gc_sections 1
4572 #define elf_backend_can_refcount 1
4573 #define elf_backend_want_got_plt 1
4574 #define elf_backend_plt_readonly 1
4575 #define elf_backend_want_plt_sym 0
4576 #define elf_backend_got_header_size 12
4578 /* Support RELA for objdump of prelink objects. */
4579 #define elf_info_to_howto elf_i386_info_to_howto_rel
4580 #define elf_info_to_howto_rel elf_i386_info_to_howto_rel
4582 #define bfd_elf32_mkobject elf_i386_mkobject
4584 #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
4585 #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
4586 #define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
4587 #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
4588 #define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
4590 #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
4591 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4592 #define elf_backend_check_relocs elf_i386_check_relocs
4593 #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
4594 #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
4595 #define elf_backend_fake_sections elf_i386_fake_sections
4596 #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
4597 #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
4598 #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
4599 #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
4600 #define elf_backend_grok_prstatus elf_i386_grok_prstatus
4601 #define elf_backend_grok_psinfo elf_i386_grok_psinfo
4602 #define elf_backend_reloc_type_class elf_i386_reloc_type_class
4603 #define elf_backend_relocate_section elf_i386_relocate_section
4604 #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
4605 #define elf_backend_always_size_sections elf_i386_always_size_sections
4606 #define elf_backend_omit_section_dynsym \
4607 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4608 #define elf_backend_plt_sym_val elf_i386_plt_sym_val
4609 #define elf_backend_hash_symbol elf_i386_hash_symbol
4610 #define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
4611 #undef elf_backend_post_process_headers
4612 #define elf_backend_post_process_headers _bfd_elf_set_osabi
4614 #include "elf32-target.h"
4616 /* FreeBSD support. */
4618 #undef TARGET_LITTLE_SYM
4619 #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
4620 #undef TARGET_LITTLE_NAME
4621 #define TARGET_LITTLE_NAME "elf32-i386-freebsd"
4623 #define ELF_OSABI ELFOSABI_FREEBSD
4625 /* The kernel recognizes executables as valid only if they carry a
4626 "FreeBSD" label in the ELF header. So we put this label on all
4627 executables and (for simplicity) also all other object files. */
4630 elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
4632 _bfd_elf_set_osabi (abfd, info);
4634 #ifdef OLD_FREEBSD_ABI_LABEL
4635 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
4636 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
4640 #undef elf_backend_post_process_headers
4641 #define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
4643 #define elf32_bed elf32_i386_fbsd_bed
4645 #undef elf_backend_add_symbol_hook
4647 #include "elf32-target.h"
4649 /* VxWorks support. */
4651 #undef TARGET_LITTLE_SYM
4652 #define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
4653 #undef TARGET_LITTLE_NAME
4654 #define TARGET_LITTLE_NAME "elf32-i386-vxworks"
4657 /* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */
4659 static struct bfd_link_hash_table *
4660 elf_i386_vxworks_link_hash_table_create (bfd *abfd)
4662 struct bfd_link_hash_table *ret;
4663 struct elf_i386_link_hash_table *htab;
4665 ret = elf_i386_link_hash_table_create (abfd);
4668 htab = (struct elf_i386_link_hash_table *) ret;
4669 htab->is_vxworks = 1;
4670 htab->plt0_pad_byte = 0x90;
4677 #undef elf_backend_relocs_compatible
4678 #undef elf_backend_post_process_headers
4679 #undef bfd_elf32_bfd_link_hash_table_create
4680 #define bfd_elf32_bfd_link_hash_table_create \
4681 elf_i386_vxworks_link_hash_table_create
4682 #undef elf_backend_add_symbol_hook
4683 #define elf_backend_add_symbol_hook \
4684 elf_vxworks_add_symbol_hook
4685 #undef elf_backend_link_output_symbol_hook
4686 #define elf_backend_link_output_symbol_hook \
4687 elf_vxworks_link_output_symbol_hook
4688 #undef elf_backend_emit_relocs
4689 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
4690 #undef elf_backend_final_write_processing
4691 #define elf_backend_final_write_processing \
4692 elf_vxworks_final_write_processing
4694 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
4696 #undef elf_backend_want_plt_sym
4697 #define elf_backend_want_plt_sym 1
4700 #define elf32_bed elf32_i386_vxworks_bed
4702 #include "elf32-target.h"