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 /* The i386 linker needs to keep track of the number of relocs that it
581 decides to copy as dynamic relocs in check_relocs for each symbol.
582 This is so that it can later discard them if they are found to be
583 unnecessary. We store the information in a field extending the
584 regular ELF linker hash table. */
586 struct elf_i386_dyn_relocs
588 struct elf_i386_dyn_relocs *next;
590 /* The input section of the reloc. */
593 /* Total number of relocs copied for the input section. */
596 /* Number of pc-relative relocs copied for the input section. */
597 bfd_size_type pc_count;
600 /* i386 ELF linker hash entry. */
602 struct elf_i386_link_hash_entry
604 struct elf_link_hash_entry elf;
606 /* Track dynamic relocs copied for this symbol. */
607 struct elf_i386_dyn_relocs *dyn_relocs;
609 #define GOT_UNKNOWN 0
613 #define GOT_TLS_IE_POS 5
614 #define GOT_TLS_IE_NEG 6
615 #define GOT_TLS_IE_BOTH 7
616 #define GOT_TLS_GDESC 8
617 #define GOT_TLS_GD_BOTH_P(type) \
618 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
619 #define GOT_TLS_GD_P(type) \
620 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
621 #define GOT_TLS_GDESC_P(type) \
622 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
623 #define GOT_TLS_GD_ANY_P(type) \
624 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
625 unsigned char tls_type;
627 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
628 starting at the end of the jump table. */
632 #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
634 struct elf_i386_obj_tdata
636 struct elf_obj_tdata root;
638 /* tls_type for each local got entry. */
639 char *local_got_tls_type;
641 /* GOTPLT entries for TLS descriptors. */
642 bfd_vma *local_tlsdesc_gotent;
645 #define elf_i386_tdata(abfd) \
646 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
648 #define elf_i386_local_got_tls_type(abfd) \
649 (elf_i386_tdata (abfd)->local_got_tls_type)
651 #define elf_i386_local_tlsdesc_gotent(abfd) \
652 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
654 #define is_i386_elf(bfd) \
655 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
656 && elf_tdata (bfd) != NULL \
657 && elf_object_id (bfd) == I386_ELF_TDATA)
660 elf_i386_mkobject (bfd *abfd)
662 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
666 /* i386 ELF linker hash table. */
668 struct elf_i386_link_hash_table
670 struct elf_link_hash_table elf;
672 /* Short-cuts to get to dynamic linker sections. */
685 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
688 /* True if the target system is VxWorks. */
691 /* Value used to fill the last word of the first plt entry. */
692 bfd_byte plt0_pad_byte;
694 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
695 bfd_vma next_tls_desc_index;
698 bfd_signed_vma refcount;
702 /* The amount of space used by the reserved portion of the sgotplt
703 section, plus whatever space is used by the jump slots. */
704 bfd_vma sgotplt_jump_table_size;
706 /* Small local sym to section mapping cache. */
707 struct sym_sec_cache sym_sec;
709 /* _TLS_MODULE_BASE_ symbol. */
710 struct bfd_link_hash_entry *tls_module_base;
712 /* Used by local STT_GNU_IFUNC symbols. */
713 htab_t loc_hash_table;
714 void *loc_hash_memory;
717 /* Get the i386 ELF linker hash table from a link_info structure. */
719 #define elf_i386_hash_table(p) \
720 ((struct elf_i386_link_hash_table *) ((p)->hash))
722 #define elf_i386_compute_jump_table_size(htab) \
723 ((htab)->next_tls_desc_index * 4)
725 /* Create an entry in an i386 ELF linker hash table. */
727 static struct bfd_hash_entry *
728 elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
729 struct bfd_hash_table *table,
732 /* Allocate the structure if it has not already been allocated by a
736 entry = bfd_hash_allocate (table,
737 sizeof (struct elf_i386_link_hash_entry));
742 /* Call the allocation method of the superclass. */
743 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
746 struct elf_i386_link_hash_entry *eh;
748 eh = (struct elf_i386_link_hash_entry *) entry;
749 eh->dyn_relocs = NULL;
750 eh->tls_type = GOT_UNKNOWN;
751 eh->tlsdesc_got = (bfd_vma) -1;
758 elf_i386_local_hash (int id, int r_sym)
760 return ((((id & 0xff) << 24) | ((id & 0xff00) << 8))
761 ^ r_sym ^ (id >> 16));
764 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
765 for local symbol so that we can handle local STT_GNU_IFUNC symbols
766 as global symbol. We reuse indx and dynstr_index for local symbol
767 hash since they aren't used by global symbols in this backend. */
770 elf_i386_local_htab_hash (const void *ptr)
772 struct elf_link_hash_entry *h
773 = (struct elf_link_hash_entry *) ptr;
774 return elf_i386_local_hash (h->indx, h->dynstr_index);
777 /* Compare local hash entries. */
780 elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
782 struct elf_link_hash_entry *h1
783 = (struct elf_link_hash_entry *) ptr1;
784 struct elf_link_hash_entry *h2
785 = (struct elf_link_hash_entry *) ptr2;
787 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
790 /* Find and/or create a hash entry for local symbol. */
792 static struct elf_link_hash_entry *
793 elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
794 bfd *abfd, const Elf_Internal_Rela *rel,
797 struct elf_i386_link_hash_entry e, *ret;
798 asection *sec = abfd->sections;
799 hashval_t h = elf_i386_local_hash (sec->id,
800 ELF32_R_SYM (rel->r_info));
803 e.elf.indx = sec->id;
804 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
805 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
806 create ? INSERT : NO_INSERT);
813 ret = (struct elf_i386_link_hash_entry *) *slot;
817 ret = (struct elf_i386_link_hash_entry *)
818 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
819 sizeof (struct elf_i386_link_hash_entry));
822 memset (ret, 0, sizeof (*ret));
823 ret->elf.indx = sec->id;
824 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
825 ret->elf.dynindx = -1;
826 ret->elf.plt.offset = (bfd_vma) -1;
827 ret->elf.got.offset = (bfd_vma) -1;
833 /* Create an i386 ELF linker hash table. */
835 static struct bfd_link_hash_table *
836 elf_i386_link_hash_table_create (bfd *abfd)
838 struct elf_i386_link_hash_table *ret;
839 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
841 ret = bfd_malloc (amt);
845 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
846 elf_i386_link_hash_newfunc,
847 sizeof (struct elf_i386_link_hash_entry)))
863 ret->irelifunc = NULL;
864 ret->tls_ldm_got.refcount = 0;
865 ret->next_tls_desc_index = 0;
866 ret->sgotplt_jump_table_size = 0;
867 ret->sym_sec.abfd = NULL;
869 ret->srelplt2 = NULL;
870 ret->plt0_pad_byte = 0;
871 ret->tls_module_base = NULL;
873 ret->loc_hash_table = htab_try_create (1024,
874 elf_i386_local_htab_hash,
875 elf_i386_local_htab_eq,
877 ret->loc_hash_memory = objalloc_create ();
878 if (!ret->loc_hash_table || !ret->loc_hash_memory)
884 return &ret->elf.root;
887 /* Destroy an i386 ELF linker hash table. */
890 elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
892 struct elf_i386_link_hash_table *htab
893 = (struct elf_i386_link_hash_table *) hash;
895 if (htab->loc_hash_table)
896 htab_delete (htab->loc_hash_table);
897 if (htab->loc_hash_memory)
898 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
899 _bfd_generic_link_hash_table_free (hash);
902 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
903 shortcuts to them in our hash table. */
905 /* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up
906 shortcuts to them in our hash table. */
909 elf_i386_create_got_section (bfd *dynobj, struct bfd_link_info *info)
911 struct elf_i386_link_hash_table *htab;
913 if (! _bfd_elf_create_got_section (dynobj, info))
916 htab = elf_i386_hash_table (info);
917 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
918 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
919 if (!htab->sgot || !htab->sgotplt)
922 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rel.got",
923 (SEC_ALLOC | SEC_LOAD
928 if (htab->srelgot == NULL
929 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
934 /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
935 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
939 elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
941 struct elf_i386_link_hash_table *htab;
943 htab = elf_i386_hash_table (info);
944 if (!htab->sgot && !elf_i386_create_got_section (dynobj, info))
947 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
950 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
951 htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt");
952 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
954 htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
956 if (!htab->splt || !htab->srelplt || !htab->sdynbss
957 || (!info->shared && !htab->srelbss))
961 && !elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
967 /* Copy the extra info we tack onto an elf_link_hash_entry. */
970 elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
971 struct elf_link_hash_entry *dir,
972 struct elf_link_hash_entry *ind)
974 struct elf_i386_link_hash_entry *edir, *eind;
976 edir = (struct elf_i386_link_hash_entry *) dir;
977 eind = (struct elf_i386_link_hash_entry *) ind;
979 if (eind->dyn_relocs != NULL)
981 if (edir->dyn_relocs != NULL)
983 struct elf_i386_dyn_relocs **pp;
984 struct elf_i386_dyn_relocs *p;
986 /* Add reloc counts against the indirect sym to the direct sym
987 list. Merge any entries against the same section. */
988 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
990 struct elf_i386_dyn_relocs *q;
992 for (q = edir->dyn_relocs; q != NULL; q = q->next)
993 if (q->sec == p->sec)
995 q->pc_count += p->pc_count;
996 q->count += p->count;
1003 *pp = edir->dyn_relocs;
1006 edir->dyn_relocs = eind->dyn_relocs;
1007 eind->dyn_relocs = NULL;
1010 if (ind->root.type == bfd_link_hash_indirect
1011 && dir->got.refcount <= 0)
1013 edir->tls_type = eind->tls_type;
1014 eind->tls_type = GOT_UNKNOWN;
1017 if (ELIMINATE_COPY_RELOCS
1018 && ind->root.type != bfd_link_hash_indirect
1019 && dir->dynamic_adjusted)
1021 /* If called to transfer flags for a weakdef during processing
1022 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1023 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1024 dir->ref_dynamic |= ind->ref_dynamic;
1025 dir->ref_regular |= ind->ref_regular;
1026 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1027 dir->needs_plt |= ind->needs_plt;
1028 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1031 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1041 /* Return TRUE if the TLS access code sequence support transition
1045 elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1047 Elf_Internal_Shdr *symtab_hdr,
1048 struct elf_link_hash_entry **sym_hashes,
1049 unsigned int r_type,
1050 const Elf_Internal_Rela *rel,
1051 const Elf_Internal_Rela *relend)
1053 unsigned int val, type;
1054 unsigned long r_symndx;
1055 struct elf_link_hash_entry *h;
1058 /* Get the section contents. */
1059 if (contents == NULL)
1061 if (elf_section_data (sec)->this_hdr.contents != NULL)
1062 contents = elf_section_data (sec)->this_hdr.contents;
1065 /* FIXME: How to better handle error condition? */
1066 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1069 /* Cache the section contents for elf_link_input_bfd. */
1070 elf_section_data (sec)->this_hdr.contents = contents;
1074 offset = rel->r_offset;
1079 if (offset < 2 || (rel + 1) >= relend)
1082 type = bfd_get_8 (abfd, contents + offset - 2);
1083 if (r_type == R_386_TLS_GD)
1085 /* Check transition from GD access model. Only
1086 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1087 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1088 can transit to different access model. */
1089 if ((offset + 10) > sec->size ||
1090 (type != 0x8d && type != 0x04))
1093 val = bfd_get_8 (abfd, contents + offset - 1);
1096 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1100 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1103 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1108 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1109 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1112 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1118 /* Check transition from LD access model. Only
1119 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1120 can transit to different access model. */
1121 if (type != 0x8d || (offset + 9) > sec->size)
1124 val = bfd_get_8 (abfd, contents + offset - 1);
1125 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1129 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1132 r_symndx = ELF32_R_SYM (rel[1].r_info);
1133 if (r_symndx < symtab_hdr->sh_info)
1136 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1137 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1138 may be versioned. */
1140 && h->root.root.string != NULL
1141 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1142 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
1143 && (strncmp (h->root.root.string, "___tls_get_addr",
1147 /* Check transition from IE access model:
1148 movl foo@indntpoff(%rip), %eax
1149 movl foo@indntpoff(%rip), %reg
1150 addl foo@indntpoff(%rip), %reg
1153 if (offset < 1 || (offset + 4) > sec->size)
1156 /* Check "movl foo@tpoff(%rip), %eax" first. */
1157 val = bfd_get_8 (abfd, contents + offset - 1);
1164 /* Check movl|addl foo@tpoff(%rip), %reg. */
1165 type = bfd_get_8 (abfd, contents + offset - 2);
1166 return ((type == 0x8b || type == 0x03)
1167 && (val & 0xc7) == 0x05);
1169 case R_386_TLS_GOTIE:
1170 case R_386_TLS_IE_32:
1171 /* Check transition from {IE_32,GOTIE} access model:
1172 subl foo@{tpoff,gontoff}(%reg1), %reg2
1173 movl foo@{tpoff,gontoff}(%reg1), %reg2
1174 addl foo@{tpoff,gontoff}(%reg1), %reg2
1177 if (offset < 2 || (offset + 4) > sec->size)
1180 val = bfd_get_8 (abfd, contents + offset - 1);
1181 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1184 type = bfd_get_8 (abfd, contents + offset - 2);
1185 return type == 0x8b || type == 0x2b || type == 0x03;
1187 case R_386_TLS_GOTDESC:
1188 /* Check transition from GDesc access model:
1189 leal x@tlsdesc(%ebx), %eax
1191 Make sure it's a leal adding ebx to a 32-bit offset
1192 into any register, although it's probably almost always
1195 if (offset < 2 || (offset + 4) > sec->size)
1198 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1201 val = bfd_get_8 (abfd, contents + offset - 1);
1202 return (val & 0xc7) == 0x83;
1204 case R_386_TLS_DESC_CALL:
1205 /* Check transition from GDesc access model:
1206 call *x@tlsdesc(%rax)
1208 if (offset + 2 <= sec->size)
1210 /* Make sure that it's a call *x@tlsdesc(%rax). */
1211 static i386_opcode16 call = { { 0xff, 0x10 } };
1212 return bfd_get_16 (abfd, contents + offset) == call.i;
1222 /* Return TRUE if the TLS access transition is OK or no transition
1223 will be performed. Update R_TYPE if there is a transition. */
1226 elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1227 asection *sec, bfd_byte *contents,
1228 Elf_Internal_Shdr *symtab_hdr,
1229 struct elf_link_hash_entry **sym_hashes,
1230 unsigned int *r_type, int tls_type,
1231 const Elf_Internal_Rela *rel,
1232 const Elf_Internal_Rela *relend,
1233 struct elf_link_hash_entry *h)
1235 unsigned int from_type = *r_type;
1236 unsigned int to_type = from_type;
1237 bfd_boolean check = TRUE;
1242 case R_386_TLS_GOTDESC:
1243 case R_386_TLS_DESC_CALL:
1244 case R_386_TLS_IE_32:
1246 case R_386_TLS_GOTIE:
1250 to_type = R_386_TLS_LE_32;
1251 else if (from_type != R_386_TLS_IE
1252 && from_type != R_386_TLS_GOTIE)
1253 to_type = R_386_TLS_IE_32;
1256 /* When we are called from elf_i386_relocate_section, CONTENTS
1257 isn't NULL and there may be additional transitions based on
1259 if (contents != NULL)
1261 unsigned int new_to_type = to_type;
1266 && (tls_type & GOT_TLS_IE))
1267 new_to_type = R_386_TLS_LE_32;
1269 if (to_type == R_386_TLS_GD
1270 || to_type == R_386_TLS_GOTDESC
1271 || to_type == R_386_TLS_DESC_CALL)
1273 if (tls_type == GOT_TLS_IE_POS)
1274 new_to_type = R_386_TLS_GOTIE;
1275 else if (tls_type & GOT_TLS_IE)
1276 new_to_type = R_386_TLS_IE_32;
1279 /* We checked the transition before when we were called from
1280 elf_i386_check_relocs. We only want to check the new
1281 transition which hasn't been checked before. */
1282 check = new_to_type != to_type && from_type == to_type;
1283 to_type = new_to_type;
1290 to_type = R_386_TLS_LE_32;
1297 /* Return TRUE if there is no transition. */
1298 if (from_type == to_type)
1301 /* Check if the transition can be performed. */
1303 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1304 symtab_hdr, sym_hashes,
1305 from_type, rel, relend))
1307 reloc_howto_type *from, *to;
1309 from = elf_i386_rtype_to_howto (abfd, from_type);
1310 to = elf_i386_rtype_to_howto (abfd, to_type);
1312 (*_bfd_error_handler)
1313 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1314 "in section `%A' failed"),
1315 abfd, sec, from->name, to->name,
1316 h ? h->root.root.string : "a local symbol",
1317 (unsigned long) rel->r_offset);
1318 bfd_set_error (bfd_error_bad_value);
1326 /* Look through the relocs for a section during the first phase, and
1327 calculate needed space in the global offset table, procedure linkage
1328 table, and dynamic reloc sections. */
1331 elf_i386_check_relocs (bfd *abfd,
1332 struct bfd_link_info *info,
1334 const Elf_Internal_Rela *relocs)
1336 struct elf_i386_link_hash_table *htab;
1337 Elf_Internal_Shdr *symtab_hdr;
1338 struct elf_link_hash_entry **sym_hashes;
1339 const Elf_Internal_Rela *rel;
1340 const Elf_Internal_Rela *rel_end;
1342 Elf_Internal_Sym *isymbuf;
1344 if (info->relocatable)
1347 BFD_ASSERT (is_i386_elf (abfd));
1349 htab = elf_i386_hash_table (info);
1350 symtab_hdr = &elf_symtab_hdr (abfd);
1351 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1352 sym_hashes = elf_sym_hashes (abfd);
1356 rel_end = relocs + sec->reloc_count;
1357 for (rel = relocs; rel < rel_end; rel++)
1359 unsigned int r_type;
1360 unsigned long r_symndx;
1361 struct elf_link_hash_entry *h;
1363 r_symndx = ELF32_R_SYM (rel->r_info);
1364 r_type = ELF32_R_TYPE (rel->r_info);
1366 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1368 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1374 if (r_symndx < symtab_hdr->sh_info)
1376 /* A local symbol. */
1377 Elf_Internal_Sym *isym;
1379 /* Read this BFD's local symbols. */
1380 if (isymbuf == NULL)
1382 if (isymbuf == NULL)
1383 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
1384 symtab_hdr->sh_info, 0,
1386 if (isymbuf == NULL)
1390 /* Check relocation against local STT_GNU_IFUNC symbol. */
1391 isym = isymbuf + r_symndx;
1392 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1394 h = elf_i386_get_local_sym_hash (htab, abfd, rel,
1399 /* Fake a STT_GNU_IFUNC symbol. */
1400 h->type = STT_GNU_IFUNC;
1403 h->forced_local = 1;
1404 h->root.type = bfd_link_hash_defined;
1411 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1412 while (h->root.type == bfd_link_hash_indirect
1413 || h->root.type == bfd_link_hash_warning)
1414 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1419 /* Create the ifunc sections for static executables. If we
1420 never see an indirect function symbol nor we are building
1421 a static executable, those sections will be empty and
1422 won't appear in output. */
1433 if (htab->irelifunc == NULL && htab->iplt == NULL)
1435 if (!_bfd_elf_create_ifunc_sections (abfd, info))
1440 htab->irelifunc = bfd_get_section_by_name (abfd,
1442 if (!htab->irelifunc)
1447 htab->iplt = bfd_get_section_by_name (abfd, ".iplt");
1448 htab->irelplt = bfd_get_section_by_name (abfd,
1450 htab->igotplt = bfd_get_section_by_name (abfd,
1461 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
1462 it here if it is defined in a non-shared object. */
1463 if (h->type == STT_GNU_IFUNC
1466 /* It is referenced by a non-shared object. */
1469 /* STT_GNU_IFUNC symbol must go through PLT. */
1470 h->plt.refcount += 1;
1472 /* STT_GNU_IFUNC needs dynamic sections. */
1473 if (htab->elf.dynobj == NULL)
1474 htab->elf.dynobj = abfd;
1479 (*_bfd_error_handler)
1480 (_("%B: relocation %s against STT_GNU_IFUNC "
1481 "symbol `%s' isn't handled by %s"), abfd,
1482 elf_howto_table[r_type].name,
1483 (h->root.root.string
1484 ? h->root.root.string : "a local symbol"),
1486 bfd_set_error (bfd_error_bad_value);
1491 h->pointer_equality_needed = 1;
1494 struct elf_i386_dyn_relocs *p;
1495 struct elf_i386_dyn_relocs **head;
1497 /* We must copy these reloc types into the
1498 output file. Create a reloc section in
1499 dynobj and make room for this reloc. */
1502 if (htab->elf.dynobj == NULL)
1503 htab->elf.dynobj = abfd;
1505 sreloc = _bfd_elf_make_dynamic_reloc_section
1506 (sec, htab->elf.dynobj, 2, abfd, FALSE);
1512 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
1514 if (p == NULL || p->sec != sec)
1516 bfd_size_type amt = sizeof *p;
1517 p = bfd_alloc (htab->elf.dynobj, amt);
1539 h->got.refcount += 1;
1540 if (htab->sgot == NULL
1541 && !elf_i386_create_got_section (htab->elf.dynobj,
1551 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1552 symtab_hdr, sym_hashes,
1553 &r_type, GOT_UNKNOWN,
1560 htab->tls_ldm_got.refcount += 1;
1564 /* This symbol requires a procedure linkage table entry. We
1565 actually build the entry in adjust_dynamic_symbol,
1566 because this might be a case of linking PIC code which is
1567 never referenced by a dynamic object, in which case we
1568 don't need to generate a procedure linkage table entry
1571 /* If this is a local symbol, we resolve it directly without
1572 creating a procedure linkage table entry. */
1577 h->plt.refcount += 1;
1580 case R_386_TLS_IE_32:
1582 case R_386_TLS_GOTIE:
1584 info->flags |= DF_STATIC_TLS;
1589 case R_386_TLS_GOTDESC:
1590 case R_386_TLS_DESC_CALL:
1591 /* This symbol requires a global offset table entry. */
1593 int tls_type, old_tls_type;
1598 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1599 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
1600 case R_386_TLS_GOTDESC:
1601 case R_386_TLS_DESC_CALL:
1602 tls_type = GOT_TLS_GDESC; break;
1603 case R_386_TLS_IE_32:
1604 if (ELF32_R_TYPE (rel->r_info) == r_type)
1605 tls_type = GOT_TLS_IE_NEG;
1607 /* If this is a GD->IE transition, we may use either of
1608 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
1609 tls_type = GOT_TLS_IE;
1612 case R_386_TLS_GOTIE:
1613 tls_type = GOT_TLS_IE_POS; break;
1618 h->got.refcount += 1;
1619 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1623 bfd_signed_vma *local_got_refcounts;
1625 /* This is a global offset table entry for a local symbol. */
1626 local_got_refcounts = elf_local_got_refcounts (abfd);
1627 if (local_got_refcounts == NULL)
1631 size = symtab_hdr->sh_info;
1632 size *= (sizeof (bfd_signed_vma)
1633 + sizeof (bfd_vma) + sizeof(char));
1634 local_got_refcounts = bfd_zalloc (abfd, size);
1635 if (local_got_refcounts == NULL)
1637 elf_local_got_refcounts (abfd) = local_got_refcounts;
1638 elf_i386_local_tlsdesc_gotent (abfd)
1639 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
1640 elf_i386_local_got_tls_type (abfd)
1641 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
1643 local_got_refcounts[r_symndx] += 1;
1644 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1647 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1648 tls_type |= old_tls_type;
1649 /* If a TLS symbol is accessed using IE at least once,
1650 there is no point to use dynamic model for it. */
1651 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1652 && (! GOT_TLS_GD_ANY_P (old_tls_type)
1653 || (tls_type & GOT_TLS_IE) == 0))
1655 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
1656 tls_type = old_tls_type;
1657 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1658 && GOT_TLS_GD_ANY_P (tls_type))
1659 tls_type |= old_tls_type;
1662 (*_bfd_error_handler)
1663 (_("%B: `%s' accessed both as normal and "
1664 "thread local symbol"),
1666 h ? h->root.root.string : "<local>");
1671 if (old_tls_type != tls_type)
1674 elf_i386_hash_entry (h)->tls_type = tls_type;
1676 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1684 if (htab->sgot == NULL)
1686 if (htab->elf.dynobj == NULL)
1687 htab->elf.dynobj = abfd;
1688 if (!elf_i386_create_got_section (htab->elf.dynobj, info))
1691 if (r_type != R_386_TLS_IE)
1695 case R_386_TLS_LE_32:
1699 info->flags |= DF_STATIC_TLS;
1704 if (h != NULL && info->executable)
1706 /* If this reloc is in a read-only section, we might
1707 need a copy reloc. We can't check reliably at this
1708 stage whether the section is read-only, as input
1709 sections have not yet been mapped to output sections.
1710 Tentatively set the flag for now, and correct in
1711 adjust_dynamic_symbol. */
1714 /* We may need a .plt entry if the function this reloc
1715 refers to is in a shared lib. */
1716 h->plt.refcount += 1;
1717 if (r_type != R_386_PC32)
1718 h->pointer_equality_needed = 1;
1721 /* If we are creating a shared library, and this is a reloc
1722 against a global symbol, or a non PC relative reloc
1723 against a local symbol, then we need to copy the reloc
1724 into the shared library. However, if we are linking with
1725 -Bsymbolic, we do not need to copy a reloc against a
1726 global symbol which is defined in an object we are
1727 including in the link (i.e., DEF_REGULAR is set). At
1728 this point we have not seen all the input files, so it is
1729 possible that DEF_REGULAR is not set now but will be set
1730 later (it is never cleared). In case of a weak definition,
1731 DEF_REGULAR may be cleared later by a strong definition in
1732 a shared library. We account for that possibility below by
1733 storing information in the relocs_copied field of the hash
1734 table entry. A similar situation occurs when creating
1735 shared libraries and symbol visibility changes render the
1738 If on the other hand, we are creating an executable, we
1739 may need to keep relocations for symbols satisfied by a
1740 dynamic library if we manage to avoid copy relocs for the
1743 && (sec->flags & SEC_ALLOC) != 0
1744 && (r_type != R_386_PC32
1746 && (! SYMBOLIC_BIND (info, h)
1747 || h->root.type == bfd_link_hash_defweak
1748 || !h->def_regular))))
1749 || (ELIMINATE_COPY_RELOCS
1751 && (sec->flags & SEC_ALLOC) != 0
1753 && (h->root.type == bfd_link_hash_defweak
1754 || !h->def_regular)))
1756 struct elf_i386_dyn_relocs *p;
1757 struct elf_i386_dyn_relocs **head;
1759 /* We must copy these reloc types into the output file.
1760 Create a reloc section in dynobj and make room for
1764 if (htab->elf.dynobj == NULL)
1765 htab->elf.dynobj = abfd;
1767 sreloc = _bfd_elf_make_dynamic_reloc_section
1768 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1774 /* If this is a global symbol, we count the number of
1775 relocations we need for this symbol. */
1778 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
1783 /* Track dynamic relocs needed for local syms too.
1784 We really need local syms available to do this
1788 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1793 vpp = &elf_section_data (s)->local_dynrel;
1794 head = (struct elf_i386_dyn_relocs **)vpp;
1798 if (p == NULL || p->sec != sec)
1800 bfd_size_type amt = sizeof *p;
1801 p = bfd_alloc (htab->elf.dynobj, amt);
1812 if (r_type == R_386_PC32)
1817 /* This relocation describes the C++ object vtable hierarchy.
1818 Reconstruct it for later use during GC. */
1819 case R_386_GNU_VTINHERIT:
1820 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1824 /* This relocation describes which C++ vtable entries are actually
1825 used. Record for later use during GC. */
1826 case R_386_GNU_VTENTRY:
1827 BFD_ASSERT (h != NULL);
1829 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
1841 /* Return the section that should be marked against GC for a given
1845 elf_i386_gc_mark_hook (asection *sec,
1846 struct bfd_link_info *info,
1847 Elf_Internal_Rela *rel,
1848 struct elf_link_hash_entry *h,
1849 Elf_Internal_Sym *sym)
1852 switch (ELF32_R_TYPE (rel->r_info))
1854 case R_386_GNU_VTINHERIT:
1855 case R_386_GNU_VTENTRY:
1859 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1862 /* Update the got entry reference counts for the section being removed. */
1865 elf_i386_gc_sweep_hook (bfd *abfd,
1866 struct bfd_link_info *info,
1868 const Elf_Internal_Rela *relocs)
1870 Elf_Internal_Shdr *symtab_hdr;
1871 struct elf_link_hash_entry **sym_hashes;
1872 bfd_signed_vma *local_got_refcounts;
1873 const Elf_Internal_Rela *rel, *relend;
1875 if (info->relocatable)
1878 elf_section_data (sec)->local_dynrel = NULL;
1880 symtab_hdr = &elf_symtab_hdr (abfd);
1881 sym_hashes = elf_sym_hashes (abfd);
1882 local_got_refcounts = elf_local_got_refcounts (abfd);
1884 relend = relocs + sec->reloc_count;
1885 for (rel = relocs; rel < relend; rel++)
1887 unsigned long r_symndx;
1888 unsigned int r_type;
1889 struct elf_link_hash_entry *h = NULL;
1891 r_symndx = ELF32_R_SYM (rel->r_info);
1892 if (r_symndx >= symtab_hdr->sh_info)
1894 struct elf_i386_link_hash_entry *eh;
1895 struct elf_i386_dyn_relocs **pp;
1896 struct elf_i386_dyn_relocs *p;
1898 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1899 while (h->root.type == bfd_link_hash_indirect
1900 || h->root.type == bfd_link_hash_warning)
1901 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1902 eh = (struct elf_i386_link_hash_entry *) h;
1904 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1907 /* Everything must go for SEC. */
1913 r_type = ELF32_R_TYPE (rel->r_info);
1914 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1915 symtab_hdr, sym_hashes,
1916 &r_type, GOT_UNKNOWN,
1923 if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0)
1924 elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1;
1928 case R_386_TLS_GOTDESC:
1929 case R_386_TLS_DESC_CALL:
1930 case R_386_TLS_IE_32:
1932 case R_386_TLS_GOTIE:
1936 if (h->got.refcount > 0)
1937 h->got.refcount -= 1;
1939 else if (local_got_refcounts != NULL)
1941 if (local_got_refcounts[r_symndx] > 0)
1942 local_got_refcounts[r_symndx] -= 1;
1955 if (h->plt.refcount > 0)
1956 h->plt.refcount -= 1;
1968 /* Adjust a symbol defined by a dynamic object and referenced by a
1969 regular object. The current definition is in some section of the
1970 dynamic object, but we're not including those sections. We have to
1971 change the definition to something the rest of the link can
1975 elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
1976 struct elf_link_hash_entry *h)
1978 struct elf_i386_link_hash_table *htab;
1981 /* STT_GNU_IFUNC symbol must go through PLT. */
1982 if (h->type == STT_GNU_IFUNC)
1984 if (h->plt.refcount <= 0)
1986 h->plt.offset = (bfd_vma) -1;
1992 /* If this is a function, put it in the procedure linkage table. We
1993 will fill in the contents of the procedure linkage table later,
1994 when we know the address of the .got section. */
1995 if (h->type == STT_FUNC
1998 if (h->plt.refcount <= 0
1999 || SYMBOL_CALLS_LOCAL (info, h)
2000 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2001 && h->root.type == bfd_link_hash_undefweak))
2003 /* This case can occur if we saw a PLT32 reloc in an input
2004 file, but the symbol was never referred to by a dynamic
2005 object, or if all references were garbage collected. In
2006 such a case, we don't actually need to build a procedure
2007 linkage table, and we can just do a PC32 reloc instead. */
2008 h->plt.offset = (bfd_vma) -1;
2015 /* It's possible that we incorrectly decided a .plt reloc was
2016 needed for an R_386_PC32 reloc to a non-function sym in
2017 check_relocs. We can't decide accurately between function and
2018 non-function syms in check-relocs; Objects loaded later in
2019 the link may change h->type. So fix it now. */
2020 h->plt.offset = (bfd_vma) -1;
2022 /* If this is a weak symbol, and there is a real definition, the
2023 processor independent code will have arranged for us to see the
2024 real definition first, and we can just use the same value. */
2025 if (h->u.weakdef != NULL)
2027 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2028 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2029 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2030 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2031 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
2032 h->non_got_ref = h->u.weakdef->non_got_ref;
2036 /* This is a reference to a symbol defined by a dynamic object which
2037 is not a function. */
2039 /* If we are creating a shared library, we must presume that the
2040 only references to the symbol are via the global offset table.
2041 For such cases we need not do anything here; the relocations will
2042 be handled correctly by relocate_section. */
2046 /* If there are no references to this symbol that do not use the
2047 GOT, we don't need to generate a copy reloc. */
2048 if (!h->non_got_ref)
2051 /* If -z nocopyreloc was given, we won't generate them either. */
2052 if (info->nocopyreloc)
2058 htab = elf_i386_hash_table (info);
2060 /* If there aren't any dynamic relocs in read-only sections, then
2061 we can keep the dynamic relocs and avoid the copy reloc. This
2062 doesn't work on VxWorks, where we can not have dynamic relocations
2063 (other than copy and jump slot relocations) in an executable. */
2064 if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks)
2066 struct elf_i386_link_hash_entry * eh;
2067 struct elf_i386_dyn_relocs *p;
2069 eh = (struct elf_i386_link_hash_entry *) h;
2070 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2072 s = p->sec->output_section;
2073 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2086 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2087 h->root.root.string);
2091 /* We must allocate the symbol in our .dynbss section, which will
2092 become part of the .bss section of the executable. There will be
2093 an entry for this symbol in the .dynsym section. The dynamic
2094 object will contain position independent code, so all references
2095 from the dynamic object to this symbol will go through the global
2096 offset table. The dynamic linker will use the .dynsym entry to
2097 determine the address it must put in the global offset table, so
2098 both the dynamic object and the regular object will refer to the
2099 same memory location for the variable. */
2101 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2102 copy the initial value out of the dynamic object and into the
2103 runtime process image. */
2104 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2106 htab->srelbss->size += sizeof (Elf32_External_Rel);
2112 return _bfd_elf_adjust_dynamic_copy (h, s);
2115 /* Allocate space in .plt, .got and associated reloc sections for
2119 elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2121 struct bfd_link_info *info;
2122 struct elf_i386_link_hash_table *htab;
2123 struct elf_i386_link_hash_entry *eh;
2124 struct elf_i386_dyn_relocs *p;
2126 if (h->root.type == bfd_link_hash_indirect)
2129 if (h->root.type == bfd_link_hash_warning)
2130 /* When warning symbols are created, they **replace** the "real"
2131 entry in the hash table, thus we never get to see the real
2132 symbol in a hash traversal. So look at it now. */
2133 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2134 eh = (struct elf_i386_link_hash_entry *) h;
2136 info = (struct bfd_link_info *) inf;
2137 htab = elf_i386_hash_table (info);
2139 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2140 here if it is defined and referenced in a non-shared object. */
2141 if (h->type == STT_GNU_IFUNC
2144 asection *plt, *gotplt, *relplt;
2146 /* Return and discard space for dynamic relocations against it if
2147 it is never referenced in a non-shared object. */
2148 if (!h->ref_regular)
2150 if (h->plt.refcount > 0
2151 || h->got.refcount > 0)
2153 h->got.offset = (bfd_vma) -1;
2154 eh->dyn_relocs = NULL;
2158 /* When building a static executable, use .iplt, .igot.plt and
2159 .rel.iplt sections for STT_GNU_IFUNC symbols. */
2160 if (htab->splt != NULL)
2163 gotplt = htab->sgotplt;
2164 relplt = htab->srelplt;
2166 /* If this is the first .plt entry, make room for the special
2169 plt->size += PLT_ENTRY_SIZE;
2174 gotplt = htab->igotplt;
2175 relplt = htab->irelplt;
2178 /* Don't update value of STT_GNU_IFUNC symbol to PLT. We need
2179 the original value for R_386_IRELATIVE. */
2180 h->plt.offset = plt->size;
2182 /* Make room for this entry in the .plt/.iplt section. */
2183 plt->size += PLT_ENTRY_SIZE;
2185 /* We also need to make an entry in the .got.plt/.got.iplt
2186 section, which will be placed in the .got section by the
2190 /* We also need to make an entry in the .rela.plt/.rela.iplt
2192 relplt->size += sizeof (Elf32_External_Rel);
2193 relplt->reloc_count++;
2195 /* We need dynamic relocation for STT_GNU_IFUNC symbol only
2196 when there is a non-GOT reference in a shared object. */
2199 eh->dyn_relocs = NULL;
2201 /* Finally, allocate space. */
2202 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2203 htab->irelifunc->size += p->count * sizeof (Elf32_External_Rel);
2205 /* For STT_GNU_IFUNC symbol, .got.plt has the real function
2206 addres and .got has the PLT entry adddress. We will load
2207 the GOT entry with the PLT entry in finish_dynamic_symbol if
2208 it is used. For branch, it uses .got.plt. For symbol value,
2209 1. Use .got.plt in a shared object if it is forced local or
2211 2. Use .got.plt in a non-shared object if pointer equality
2213 3. Use .got.plt if .got isn't used.
2214 4. Otherwise use .got so that it can be shared among different
2215 objects at run-time.
2216 We only need to relocate .got entry in shared object. */
2218 && (h->dynindx == -1
2219 || h->forced_local))
2221 && !h->pointer_equality_needed)
2222 || htab->sgot == NULL)
2225 h->got.offset = (bfd_vma) -1;
2229 h->got.offset = htab->sgot->size;
2230 htab->sgot->size += 4;
2232 htab->srelgot->size += sizeof (Elf32_External_Rel);
2237 else if (htab->elf.dynamic_sections_created
2238 && h->plt.refcount > 0)
2240 /* Make sure this symbol is output as a dynamic symbol.
2241 Undefined weak syms won't yet be marked as dynamic. */
2242 if (h->dynindx == -1
2243 && !h->forced_local)
2245 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2250 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2252 asection *s = htab->splt;
2254 /* If this is the first .plt entry, make room for the special
2257 s->size += PLT_ENTRY_SIZE;
2259 h->plt.offset = s->size;
2261 /* If this symbol is not defined in a regular file, and we are
2262 not generating a shared library, then set the symbol to this
2263 location in the .plt. This is required to make function
2264 pointers compare as equal between the normal executable and
2265 the shared library. */
2269 h->root.u.def.section = s;
2270 h->root.u.def.value = h->plt.offset;
2273 /* Make room for this entry. */
2274 s->size += PLT_ENTRY_SIZE;
2276 /* We also need to make an entry in the .got.plt section, which
2277 will be placed in the .got section by the linker script. */
2278 htab->sgotplt->size += 4;
2280 /* We also need to make an entry in the .rel.plt section. */
2281 htab->srelplt->size += sizeof (Elf32_External_Rel);
2282 htab->next_tls_desc_index++;
2284 if (htab->is_vxworks && !info->shared)
2286 /* VxWorks has a second set of relocations for each PLT entry
2287 in executables. They go in a separate relocation section,
2288 which is processed by the kernel loader. */
2290 /* There are two relocations for the initial PLT entry: an
2291 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2292 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2294 if (h->plt.offset == PLT_ENTRY_SIZE)
2295 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2297 /* There are two extra relocations for each subsequent PLT entry:
2298 an R_386_32 relocation for the GOT entry, and an R_386_32
2299 relocation for the PLT entry. */
2301 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2306 h->plt.offset = (bfd_vma) -1;
2312 h->plt.offset = (bfd_vma) -1;
2316 eh->tlsdesc_got = (bfd_vma) -1;
2318 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
2319 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2320 if (h->got.refcount > 0
2323 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
2324 h->got.offset = (bfd_vma) -1;
2325 else if (h->got.refcount > 0)
2329 int tls_type = elf_i386_hash_entry(h)->tls_type;
2331 /* Make sure this symbol is output as a dynamic symbol.
2332 Undefined weak syms won't yet be marked as dynamic. */
2333 if (h->dynindx == -1
2334 && !h->forced_local)
2336 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2341 if (GOT_TLS_GDESC_P (tls_type))
2343 eh->tlsdesc_got = htab->sgotplt->size
2344 - elf_i386_compute_jump_table_size (htab);
2345 htab->sgotplt->size += 8;
2346 h->got.offset = (bfd_vma) -2;
2348 if (! GOT_TLS_GDESC_P (tls_type)
2349 || GOT_TLS_GD_P (tls_type))
2351 h->got.offset = s->size;
2353 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2354 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2357 dyn = htab->elf.dynamic_sections_created;
2358 /* R_386_TLS_IE_32 needs one dynamic relocation,
2359 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2360 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2361 need two), R_386_TLS_GD needs one if local symbol and two if
2363 if (tls_type == GOT_TLS_IE_BOTH)
2364 htab->srelgot->size += 2 * sizeof (Elf32_External_Rel);
2365 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
2366 || (tls_type & GOT_TLS_IE))
2367 htab->srelgot->size += sizeof (Elf32_External_Rel);
2368 else if (GOT_TLS_GD_P (tls_type))
2369 htab->srelgot->size += 2 * sizeof (Elf32_External_Rel);
2370 else if (! GOT_TLS_GDESC_P (tls_type)
2371 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2372 || h->root.type != bfd_link_hash_undefweak)
2374 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2375 htab->srelgot->size += sizeof (Elf32_External_Rel);
2376 if (GOT_TLS_GDESC_P (tls_type))
2377 htab->srelplt->size += sizeof (Elf32_External_Rel);
2380 h->got.offset = (bfd_vma) -1;
2382 if (eh->dyn_relocs == NULL)
2385 /* In the shared -Bsymbolic case, discard space allocated for
2386 dynamic pc-relative relocs against symbols which turn out to be
2387 defined in regular objects. For the normal shared case, discard
2388 space for pc-relative relocs that have become local due to symbol
2389 visibility changes. */
2393 /* The only reloc that uses pc_count is R_386_PC32, which will
2394 appear on a call or on something like ".long foo - .". We
2395 want calls to protected symbols to resolve directly to the
2396 function rather than going via the plt. If people want
2397 function pointer comparisons to work as expected then they
2398 should avoid writing assembly like ".long foo - .". */
2399 if (SYMBOL_CALLS_LOCAL (info, h))
2401 struct elf_i386_dyn_relocs **pp;
2403 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2405 p->count -= p->pc_count;
2414 if (htab->is_vxworks)
2416 struct elf_i386_dyn_relocs **pp;
2417 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2419 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2426 /* Also discard relocs on undefined weak syms with non-default
2428 if (eh->dyn_relocs != NULL
2429 && h->root.type == bfd_link_hash_undefweak)
2431 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2432 eh->dyn_relocs = NULL;
2434 /* Make sure undefined weak symbols are output as a dynamic
2436 else if (h->dynindx == -1
2437 && !h->forced_local)
2439 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2444 else if (ELIMINATE_COPY_RELOCS)
2446 /* For the non-shared case, discard space for relocs against
2447 symbols which turn out to need copy relocs or are not
2453 || (htab->elf.dynamic_sections_created
2454 && (h->root.type == bfd_link_hash_undefweak
2455 || h->root.type == bfd_link_hash_undefined))))
2457 /* Make sure this symbol is output as a dynamic symbol.
2458 Undefined weak syms won't yet be marked as dynamic. */
2459 if (h->dynindx == -1
2460 && !h->forced_local)
2462 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2466 /* If that succeeded, we know we'll be keeping all the
2468 if (h->dynindx != -1)
2472 eh->dyn_relocs = NULL;
2477 /* Finally, allocate space. */
2478 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2482 sreloc = elf_section_data (p->sec)->sreloc;
2484 BFD_ASSERT (sreloc != NULL);
2485 sreloc->size += p->count * sizeof (Elf32_External_Rel);
2491 /* Allocate space in .plt, .got and associated reloc sections for
2492 local dynamic relocs. */
2495 elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2497 struct elf_link_hash_entry *h
2498 = (struct elf_link_hash_entry *) *slot;
2500 if (h->type != STT_GNU_IFUNC
2504 || h->root.type != bfd_link_hash_defined)
2507 return elf_i386_allocate_dynrelocs (h, inf);
2510 /* Find any dynamic relocs that apply to read-only sections. */
2513 elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2515 struct elf_i386_link_hash_entry *eh;
2516 struct elf_i386_dyn_relocs *p;
2518 if (h->root.type == bfd_link_hash_warning)
2519 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2521 eh = (struct elf_i386_link_hash_entry *) h;
2522 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2524 asection *s = p->sec->output_section;
2526 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2528 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2530 info->flags |= DF_TEXTREL;
2532 /* Not an error, just cut short the traversal. */
2539 /* Set the sizes of the dynamic sections. */
2542 elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2543 struct bfd_link_info *info)
2545 struct elf_i386_link_hash_table *htab;
2551 htab = elf_i386_hash_table (info);
2552 dynobj = htab->elf.dynobj;
2556 if (htab->elf.dynamic_sections_created)
2558 /* Set the contents of the .interp section to the interpreter. */
2559 if (info->executable)
2561 s = bfd_get_section_by_name (dynobj, ".interp");
2564 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2565 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2569 /* Set up .got offsets for local syms, and space for local dynamic
2571 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2573 bfd_signed_vma *local_got;
2574 bfd_signed_vma *end_local_got;
2575 char *local_tls_type;
2576 bfd_vma *local_tlsdesc_gotent;
2577 bfd_size_type locsymcount;
2578 Elf_Internal_Shdr *symtab_hdr;
2581 if (! is_i386_elf (ibfd))
2584 for (s = ibfd->sections; s != NULL; s = s->next)
2586 struct elf_i386_dyn_relocs *p;
2588 for (p = ((struct elf_i386_dyn_relocs *)
2589 elf_section_data (s)->local_dynrel);
2593 if (!bfd_is_abs_section (p->sec)
2594 && bfd_is_abs_section (p->sec->output_section))
2596 /* Input section has been discarded, either because
2597 it is a copy of a linkonce section or due to
2598 linker script /DISCARD/, so we'll be discarding
2601 else if (htab->is_vxworks
2602 && strcmp (p->sec->output_section->name,
2605 /* Relocations in vxworks .tls_vars sections are
2606 handled specially by the loader. */
2608 else if (p->count != 0)
2610 srel = elf_section_data (p->sec)->sreloc;
2611 srel->size += p->count * sizeof (Elf32_External_Rel);
2612 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2613 info->flags |= DF_TEXTREL;
2618 local_got = elf_local_got_refcounts (ibfd);
2622 symtab_hdr = &elf_symtab_hdr (ibfd);
2623 locsymcount = symtab_hdr->sh_info;
2624 end_local_got = local_got + locsymcount;
2625 local_tls_type = elf_i386_local_got_tls_type (ibfd);
2626 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
2628 srel = htab->srelgot;
2629 for (; local_got < end_local_got;
2630 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
2632 *local_tlsdesc_gotent = (bfd_vma) -1;
2635 if (GOT_TLS_GDESC_P (*local_tls_type))
2637 *local_tlsdesc_gotent = htab->sgotplt->size
2638 - elf_i386_compute_jump_table_size (htab);
2639 htab->sgotplt->size += 8;
2640 *local_got = (bfd_vma) -2;
2642 if (! GOT_TLS_GDESC_P (*local_tls_type)
2643 || GOT_TLS_GD_P (*local_tls_type))
2645 *local_got = s->size;
2647 if (GOT_TLS_GD_P (*local_tls_type)
2648 || *local_tls_type == GOT_TLS_IE_BOTH)
2652 || GOT_TLS_GD_ANY_P (*local_tls_type)
2653 || (*local_tls_type & GOT_TLS_IE))
2655 if (*local_tls_type == GOT_TLS_IE_BOTH)
2656 srel->size += 2 * sizeof (Elf32_External_Rel);
2657 else if (GOT_TLS_GD_P (*local_tls_type)
2658 || ! GOT_TLS_GDESC_P (*local_tls_type))
2659 srel->size += sizeof (Elf32_External_Rel);
2660 if (GOT_TLS_GDESC_P (*local_tls_type))
2661 htab->srelplt->size += sizeof (Elf32_External_Rel);
2665 *local_got = (bfd_vma) -1;
2669 if (htab->tls_ldm_got.refcount > 0)
2671 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2673 htab->tls_ldm_got.offset = htab->sgot->size;
2674 htab->sgot->size += 8;
2675 htab->srelgot->size += sizeof (Elf32_External_Rel);
2678 htab->tls_ldm_got.offset = -1;
2680 /* Allocate global sym .plt and .got entries, and space for global
2681 sym dynamic relocs. */
2682 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
2684 /* Allocate .plt and .got entries, and space for local symbols. */
2685 htab_traverse (htab->loc_hash_table,
2686 elf_i386_allocate_local_dynrelocs,
2689 /* For every jump slot reserved in the sgotplt, reloc_count is
2690 incremented. However, when we reserve space for TLS descriptors,
2691 it's not incremented, so in order to compute the space reserved
2692 for them, it suffices to multiply the reloc count by the jump
2695 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2697 /* We now have determined the sizes of the various dynamic sections.
2698 Allocate memory for them. */
2700 for (s = dynobj->sections; s != NULL; s = s->next)
2702 bfd_boolean strip_section = TRUE;
2704 if ((s->flags & SEC_LINKER_CREATED) == 0)
2709 || s == htab->sgotplt
2711 || s == htab->igotplt
2712 || s == htab->sdynbss)
2714 /* Strip this section if we don't need it; see the
2716 /* We'd like to strip these sections if they aren't needed, but if
2717 we've exported dynamic symbols from them we must leave them.
2718 It's too late to tell BFD to get rid of the symbols. */
2720 if (htab->elf.hplt != NULL)
2721 strip_section = FALSE;
2723 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
2725 if (s->size != 0 && s != htab->srelplt && s != htab->srelplt2)
2728 /* We use the reloc_count field as a counter if we need
2729 to copy relocs into the output file. */
2734 /* It's not one of our sections, so don't allocate space. */
2740 /* If we don't need this section, strip it from the
2741 output file. This is mostly to handle .rel.bss and
2742 .rel.plt. We must create both sections in
2743 create_dynamic_sections, because they must be created
2744 before the linker maps input sections to output
2745 sections. The linker does that before
2746 adjust_dynamic_symbol is called, and it is that
2747 function which decides whether anything needs to go
2748 into these sections. */
2750 s->flags |= SEC_EXCLUDE;
2754 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2757 /* Allocate memory for the section contents. We use bfd_zalloc
2758 here in case unused entries are not reclaimed before the
2759 section's contents are written out. This should not happen,
2760 but this way if it does, we get a R_386_NONE reloc instead
2762 s->contents = bfd_zalloc (dynobj, s->size);
2763 if (s->contents == NULL)
2767 if (htab->elf.dynamic_sections_created)
2769 /* Add some entries to the .dynamic section. We fill in the
2770 values later, in elf_i386_finish_dynamic_sections, but we
2771 must add the entries now so that we get the correct size for
2772 the .dynamic section. The DT_DEBUG entry is filled in by the
2773 dynamic linker and used by the debugger. */
2774 #define add_dynamic_entry(TAG, VAL) \
2775 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2777 if (info->executable)
2779 if (!add_dynamic_entry (DT_DEBUG, 0))
2783 if (htab->splt->size != 0)
2785 if (!add_dynamic_entry (DT_PLTGOT, 0)
2786 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2787 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2788 || !add_dynamic_entry (DT_JMPREL, 0))
2794 if (!add_dynamic_entry (DT_REL, 0)
2795 || !add_dynamic_entry (DT_RELSZ, 0)
2796 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
2799 /* If any dynamic relocs apply to a read-only section,
2800 then we need a DT_TEXTREL entry. */
2801 if ((info->flags & DF_TEXTREL) == 0)
2802 elf_link_hash_traverse (&htab->elf,
2803 elf_i386_readonly_dynrelocs, info);
2805 if ((info->flags & DF_TEXTREL) != 0)
2807 if (!add_dynamic_entry (DT_TEXTREL, 0))
2811 if (htab->is_vxworks
2812 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2815 #undef add_dynamic_entry
2821 elf_i386_always_size_sections (bfd *output_bfd,
2822 struct bfd_link_info *info)
2824 asection *tls_sec = elf_hash_table (info)->tls_sec;
2828 struct elf_link_hash_entry *tlsbase;
2830 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
2831 "_TLS_MODULE_BASE_",
2832 FALSE, FALSE, FALSE);
2834 if (tlsbase && tlsbase->type == STT_TLS)
2836 struct bfd_link_hash_entry *bh = NULL;
2837 const struct elf_backend_data *bed
2838 = get_elf_backend_data (output_bfd);
2840 if (!(_bfd_generic_link_add_one_symbol
2841 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
2842 tls_sec, 0, NULL, FALSE,
2843 bed->collect, &bh)))
2846 elf_i386_hash_table (info)->tls_module_base = bh;
2848 tlsbase = (struct elf_link_hash_entry *)bh;
2849 tlsbase->def_regular = 1;
2850 tlsbase->other = STV_HIDDEN;
2851 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
2858 /* Set the correct type for an x86 ELF section. We do this by the
2859 section name, which is a hack, but ought to work. */
2862 elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2863 Elf_Internal_Shdr *hdr,
2866 register const char *name;
2868 name = bfd_get_section_name (abfd, sec);
2870 /* This is an ugly, but unfortunately necessary hack that is
2871 needed when producing EFI binaries on x86. It tells
2872 elf.c:elf_fake_sections() not to consider ".reloc" as a section
2873 containing ELF relocation info. We need this hack in order to
2874 be able to generate ELF binaries that can be translated into
2875 EFI applications (which are essentially COFF objects). Those
2876 files contain a COFF ".reloc" section inside an ELFNN object,
2877 which would normally cause BFD to segfault because it would
2878 attempt to interpret this section as containing relocation
2879 entries for section "oc". With this hack enabled, ".reloc"
2880 will be treated as a normal data section, which will avoid the
2881 segfault. However, you won't be able to create an ELFNN binary
2882 with a section named "oc" that needs relocations, but that's
2883 the kind of ugly side-effects you get when detecting section
2884 types based on their names... In practice, this limitation is
2885 unlikely to bite. */
2886 if (strcmp (name, ".reloc") == 0)
2887 hdr->sh_type = SHT_PROGBITS;
2892 /* _TLS_MODULE_BASE_ needs to be treated especially when linking
2893 executables. Rather than setting it to the beginning of the TLS
2894 section, we have to set it to the end. This function may be called
2895 multiple times, it is idempotent. */
2898 elf_i386_set_tls_module_base (struct bfd_link_info *info)
2900 struct bfd_link_hash_entry *base;
2902 if (!info->executable)
2905 base = elf_i386_hash_table (info)->tls_module_base;
2910 base->u.def.value = elf_hash_table (info)->tls_size;
2913 /* Return the base VMA address which should be subtracted from real addresses
2914 when resolving @dtpoff relocation.
2915 This is PT_TLS segment p_vaddr. */
2918 elf_i386_dtpoff_base (struct bfd_link_info *info)
2920 /* If tls_sec is NULL, we should have signalled an error already. */
2921 if (elf_hash_table (info)->tls_sec == NULL)
2923 return elf_hash_table (info)->tls_sec->vma;
2926 /* Return the relocation value for @tpoff relocation
2927 if STT_TLS virtual address is ADDRESS. */
2930 elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
2932 struct elf_link_hash_table *htab = elf_hash_table (info);
2934 /* If tls_sec is NULL, we should have signalled an error already. */
2935 if (htab->tls_sec == NULL)
2937 return htab->tls_size + htab->tls_sec->vma - address;
2940 /* Relocate an i386 ELF section. */
2943 elf_i386_relocate_section (bfd *output_bfd,
2944 struct bfd_link_info *info,
2946 asection *input_section,
2948 Elf_Internal_Rela *relocs,
2949 Elf_Internal_Sym *local_syms,
2950 asection **local_sections)
2952 struct elf_i386_link_hash_table *htab;
2953 Elf_Internal_Shdr *symtab_hdr;
2954 struct elf_link_hash_entry **sym_hashes;
2955 bfd_vma *local_got_offsets;
2956 bfd_vma *local_tlsdesc_gotents;
2957 Elf_Internal_Rela *rel;
2958 Elf_Internal_Rela *relend;
2959 bfd_boolean is_vxworks_tls;
2961 BFD_ASSERT (is_i386_elf (input_bfd));
2963 htab = elf_i386_hash_table (info);
2964 symtab_hdr = &elf_symtab_hdr (input_bfd);
2965 sym_hashes = elf_sym_hashes (input_bfd);
2966 local_got_offsets = elf_local_got_offsets (input_bfd);
2967 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
2968 /* We have to handle relocations in vxworks .tls_vars sections
2969 specially, because the dynamic loader is 'weird'. */
2970 is_vxworks_tls = (htab->is_vxworks && info->shared
2971 && !strcmp (input_section->output_section->name,
2974 elf_i386_set_tls_module_base (info);
2977 relend = relocs + input_section->reloc_count;
2978 for (; rel < relend; rel++)
2980 unsigned int r_type;
2981 reloc_howto_type *howto;
2982 unsigned long r_symndx;
2983 struct elf_link_hash_entry *h;
2984 Elf_Internal_Sym *sym;
2986 bfd_vma off, offplt;
2988 bfd_boolean unresolved_reloc;
2989 bfd_reloc_status_type r;
2993 r_type = ELF32_R_TYPE (rel->r_info);
2994 if (r_type == R_386_GNU_VTINHERIT
2995 || r_type == R_386_GNU_VTENTRY)
2998 if ((indx = r_type) >= R_386_standard
2999 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3000 >= R_386_ext - R_386_standard)
3001 && ((indx = r_type - R_386_tls_offset) - R_386_ext
3002 >= R_386_irelative - R_386_ext))
3004 (*_bfd_error_handler)
3005 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3006 input_bfd, input_section, r_type);
3007 bfd_set_error (bfd_error_bad_value);
3010 howto = elf_howto_table + indx;
3012 r_symndx = ELF32_R_SYM (rel->r_info);
3016 unresolved_reloc = FALSE;
3017 if (r_symndx < symtab_hdr->sh_info)
3019 sym = local_syms + r_symndx;
3020 sec = local_sections[r_symndx];
3021 relocation = (sec->output_section->vma
3022 + sec->output_offset
3025 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3026 && ((sec->flags & SEC_MERGE) != 0
3027 || (info->relocatable
3028 && sec->output_offset != 0)))
3031 bfd_byte *where = contents + rel->r_offset;
3033 switch (howto->size)
3036 addend = bfd_get_8 (input_bfd, where);
3037 if (howto->pc_relative)
3039 addend = (addend ^ 0x80) - 0x80;
3044 addend = bfd_get_16 (input_bfd, where);
3045 if (howto->pc_relative)
3047 addend = (addend ^ 0x8000) - 0x8000;
3052 addend = bfd_get_32 (input_bfd, where);
3053 if (howto->pc_relative)
3055 addend = (addend ^ 0x80000000) - 0x80000000;
3063 if (info->relocatable)
3064 addend += sec->output_offset;
3067 asection *msec = sec;
3068 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3070 addend -= relocation;
3071 addend += msec->output_section->vma + msec->output_offset;
3074 switch (howto->size)
3077 /* FIXME: overflow checks. */
3078 if (howto->pc_relative)
3080 bfd_put_8 (input_bfd, addend, where);
3083 if (howto->pc_relative)
3085 bfd_put_16 (input_bfd, addend, where);
3088 if (howto->pc_relative)
3090 bfd_put_32 (input_bfd, addend, where);
3094 else if (ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3096 /* Relocate against local STT_GNU_IFUNC symbol. */
3097 h = elf_i386_get_local_sym_hash (htab, input_bfd,
3102 /* Set STT_GNU_IFUNC symbol value. */
3103 h->root.u.def.value = sym->st_value;
3104 h->root.u.def.section = sec;
3111 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3112 r_symndx, symtab_hdr, sym_hashes,
3114 unresolved_reloc, warned);
3117 if (sec != NULL && elf_discarded_section (sec))
3119 /* For relocs against symbols from removed linkonce sections,
3120 or sections discarded by a linker script, we just want the
3121 section contents zeroed. Avoid any special processing. */
3122 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
3128 if (info->relocatable)
3131 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3132 it here if it is defined in a non-shared object. */
3134 && h->type == STT_GNU_IFUNC
3137 asection *plt, *gotplt, *base_got;
3140 if ((input_section->flags & SEC_ALLOC) == 0
3141 || h->plt.offset == (bfd_vma) -1)
3144 /* STT_GNU_IFUNC symbol must go through PLT. */
3145 if (htab->splt != NULL)
3148 gotplt = htab->sgotplt;
3153 gotplt = htab->igotplt;
3156 relocation = (plt->output_section->vma
3157 + plt->output_offset + h->plt.offset);
3162 (*_bfd_error_handler)
3163 (_("%B: relocation %s against STT_GNU_IFUNC "
3164 "symbol `%s' isn't handled by %s"), input_bfd,
3165 elf_howto_table[r_type].name,
3166 (h->root.root.string
3167 ? h->root.root.string : "a local symbol"),
3169 bfd_set_error (bfd_error_bad_value);
3173 /* Generate dynamic relcoation only when there is a
3174 non-GOF reference in a shared object. */
3175 if (info->shared && h->non_got_ref)
3177 Elf_Internal_Rela outrel;
3182 /* Need a dynamic relocation to get the real function
3184 offset = _bfd_elf_section_offset (output_bfd,
3188 if (offset == (bfd_vma) -1
3189 || offset == (bfd_vma) -2)
3192 outrel.r_offset = (input_section->output_section->vma
3193 + input_section->output_offset
3196 if (h->dynindx == -1
3199 /* This symbol is resolved locally. */
3200 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3201 bfd_put_32 (output_bfd,
3202 (h->root.u.def.value
3203 + h->root.u.def.section->output_section->vma
3204 + h->root.u.def.section->output_offset),
3208 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3210 sreloc = htab->irelifunc;
3211 loc = sreloc->contents;
3212 loc += (sreloc->reloc_count++
3213 * sizeof (Elf32_External_Rel));
3214 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3216 /* If this reloc is against an external symbol, we
3217 do not want to fiddle with the addend. Otherwise,
3218 we need to include the symbol value so that it
3219 becomes an addend for the dynamic reloc. For an
3220 internal symbol, we have updated addend. */
3229 base_got = htab->sgot;
3230 off = h->got.offset;
3232 if (base_got == NULL)
3235 if (off == (bfd_vma) -1)
3237 /* We can't use h->got.offset here to save state, or
3238 even just remember the offset, as finish_dynamic_symbol
3239 would use that as offset into .got. */
3241 if (htab->splt != NULL)
3243 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3244 off = (plt_index + 3) * 4;
3245 base_got = htab->sgotplt;
3249 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
3250 off = plt_index * 4;
3251 base_got = htab->igotplt;
3254 if (h->dynindx == -1
3258 /* This references the local defitionion. We must
3259 initialize this entry in the global offset table.
3260 Since the offset must always be a multiple of 8,
3261 we use the least significant bit to record
3262 whether we have initialized it already.
3264 When doing a dynamic link, we create a .rela.got
3265 relocation entry to initialize the value. This
3266 is done in the finish_dynamic_symbol routine. */
3271 bfd_put_32 (output_bfd, relocation,
3272 base_got->contents + off);
3279 /* Adjust for static executables. */
3280 if (htab->splt == NULL)
3281 relocation += gotplt->output_offset;
3285 relocation = (base_got->output_section->vma
3286 + base_got->output_offset + off
3287 - gotplt->output_section->vma
3288 - gotplt->output_offset);
3289 /* Adjust for static executables. */
3290 if (htab->splt == NULL)
3291 relocation += gotplt->output_offset;
3297 relocation -= (gotplt->output_section->vma
3298 + gotplt->output_offset);
3306 /* Relocation is to the entry for this symbol in the global
3308 if (htab->sgot == NULL)
3315 off = h->got.offset;
3316 dyn = htab->elf.dynamic_sections_created;
3317 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3319 && SYMBOL_REFERENCES_LOCAL (info, h))
3320 || (ELF_ST_VISIBILITY (h->other)
3321 && h->root.type == bfd_link_hash_undefweak))
3323 /* This is actually a static link, or it is a
3324 -Bsymbolic link and the symbol is defined
3325 locally, or the symbol was forced to be local
3326 because of a version file. We must initialize
3327 this entry in the global offset table. Since the
3328 offset must always be a multiple of 4, we use the
3329 least significant bit to record whether we have
3330 initialized it already.
3332 When doing a dynamic link, we create a .rel.got
3333 relocation entry to initialize the value. This
3334 is done in the finish_dynamic_symbol routine. */
3339 bfd_put_32 (output_bfd, relocation,
3340 htab->sgot->contents + off);
3345 unresolved_reloc = FALSE;
3349 if (local_got_offsets == NULL)
3352 off = local_got_offsets[r_symndx];
3354 /* The offset must always be a multiple of 4. We use
3355 the least significant bit to record whether we have
3356 already generated the necessary reloc. */
3361 bfd_put_32 (output_bfd, relocation,
3362 htab->sgot->contents + off);
3367 Elf_Internal_Rela outrel;
3374 outrel.r_offset = (htab->sgot->output_section->vma
3375 + htab->sgot->output_offset
3377 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3379 loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
3380 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3383 local_got_offsets[r_symndx] |= 1;
3387 if (off >= (bfd_vma) -2)
3390 relocation = htab->sgot->output_section->vma
3391 + htab->sgot->output_offset + off
3392 - htab->sgotplt->output_section->vma
3393 - htab->sgotplt->output_offset;
3397 /* Relocation is relative to the start of the global offset
3400 /* Check to make sure it isn't a protected function symbol
3401 for shared library since it may not be local when used
3402 as function address. We also need to make sure that a
3403 symbol is defined locally. */
3404 if (info->shared && h)
3406 if (!h->def_regular)
3410 switch (ELF_ST_VISIBILITY (h->other))
3413 v = _("hidden symbol");
3416 v = _("internal symbol");
3419 v = _("protected symbol");
3426 (*_bfd_error_handler)
3427 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3428 input_bfd, v, h->root.root.string);
3429 bfd_set_error (bfd_error_bad_value);
3432 else if (!info->executable
3433 && h->type == STT_FUNC
3434 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3436 (*_bfd_error_handler)
3437 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3438 input_bfd, h->root.root.string);
3439 bfd_set_error (bfd_error_bad_value);
3444 /* Note that sgot is not involved in this
3445 calculation. We always want the start of .got.plt. If we
3446 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
3447 permitted by the ABI, we might have to change this
3449 relocation -= htab->sgotplt->output_section->vma
3450 + htab->sgotplt->output_offset;
3454 /* Use global offset table as symbol value. */
3455 relocation = htab->sgotplt->output_section->vma
3456 + htab->sgotplt->output_offset;
3457 unresolved_reloc = FALSE;
3461 /* Relocation is to the entry for this symbol in the
3462 procedure linkage table. */
3464 /* Resolve a PLT32 reloc against a local symbol directly,
3465 without using the procedure linkage table. */
3469 if (h->plt.offset == (bfd_vma) -1
3470 || htab->splt == NULL)
3472 /* We didn't make a PLT entry for this symbol. This
3473 happens when statically linking PIC code, or when
3474 using -Bsymbolic. */
3478 relocation = (htab->splt->output_section->vma
3479 + htab->splt->output_offset
3481 unresolved_reloc = FALSE;
3486 if ((input_section->flags & SEC_ALLOC) == 0
3492 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3493 || h->root.type != bfd_link_hash_undefweak)
3494 && (r_type != R_386_PC32
3495 || !SYMBOL_CALLS_LOCAL (info, h)))
3496 || (ELIMINATE_COPY_RELOCS
3503 || h->root.type == bfd_link_hash_undefweak
3504 || h->root.type == bfd_link_hash_undefined)))
3506 Elf_Internal_Rela outrel;
3508 bfd_boolean skip, relocate;
3511 /* When generating a shared object, these relocations
3512 are copied into the output file to be resolved at run
3519 _bfd_elf_section_offset (output_bfd, info, input_section,
3521 if (outrel.r_offset == (bfd_vma) -1)
3523 else if (outrel.r_offset == (bfd_vma) -2)
3524 skip = TRUE, relocate = TRUE;
3525 outrel.r_offset += (input_section->output_section->vma
3526 + input_section->output_offset);
3529 memset (&outrel, 0, sizeof outrel);
3532 && (r_type == R_386_PC32
3534 || !SYMBOLIC_BIND (info, h)
3535 || !h->def_regular))
3536 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3539 /* This symbol is local, or marked to become local. */
3541 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3544 sreloc = elf_section_data (input_section)->sreloc;
3546 BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
3548 loc = sreloc->contents;
3549 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3551 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3553 /* If this reloc is against an external symbol, we do
3554 not want to fiddle with the addend. Otherwise, we
3555 need to include the symbol value so that it becomes
3556 an addend for the dynamic reloc. */
3565 Elf_Internal_Rela outrel;
3569 outrel.r_offset = rel->r_offset
3570 + input_section->output_section->vma
3571 + input_section->output_offset;
3572 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3573 sreloc = elf_section_data (input_section)->sreloc;
3576 loc = sreloc->contents;
3577 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3578 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3583 case R_386_TLS_GOTDESC:
3584 case R_386_TLS_DESC_CALL:
3585 case R_386_TLS_IE_32:
3586 case R_386_TLS_GOTIE:
3587 tls_type = GOT_UNKNOWN;
3588 if (h == NULL && local_got_offsets)
3589 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3591 tls_type = elf_i386_hash_entry(h)->tls_type;
3592 if (tls_type == GOT_TLS_IE)
3593 tls_type = GOT_TLS_IE_NEG;
3595 if (! elf_i386_tls_transition (info, input_bfd,
3596 input_section, contents,
3597 symtab_hdr, sym_hashes,
3598 &r_type, tls_type, rel,
3602 if (r_type == R_386_TLS_LE_32)
3604 BFD_ASSERT (! unresolved_reloc);
3605 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3610 /* GD->LE transition. */
3611 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3614 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3616 movl %gs:0, %eax; subl $foo@tpoff, %eax
3617 (6 byte form of subl). */
3618 memcpy (contents + rel->r_offset - 3,
3619 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3620 roff = rel->r_offset + 5;
3624 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3626 movl %gs:0, %eax; subl $foo@tpoff, %eax
3627 (6 byte form of subl). */
3628 memcpy (contents + rel->r_offset - 2,
3629 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3630 roff = rel->r_offset + 6;
3632 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
3634 /* Skip R_386_PC32/R_386_PLT32. */
3638 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3640 /* GDesc -> LE transition.
3641 It's originally something like:
3642 leal x@tlsdesc(%ebx), %eax
3646 Registers other than %eax may be set up here. */
3651 roff = rel->r_offset;
3652 val = bfd_get_8 (input_bfd, contents + roff - 1);
3654 /* Now modify the instruction as appropriate. */
3655 /* aoliva FIXME: remove the above and xor the byte
3657 bfd_put_8 (output_bfd, val ^ 0x86,
3658 contents + roff - 1);
3659 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3663 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3665 /* GDesc -> LE transition.
3673 roff = rel->r_offset;
3674 bfd_put_8 (output_bfd, 0x66, contents + roff);
3675 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3678 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
3682 /* IE->LE transition:
3683 Originally it can be one of:
3691 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3694 /* movl foo, %eax. */
3695 bfd_put_8 (output_bfd, 0xb8,
3696 contents + rel->r_offset - 1);
3702 type = bfd_get_8 (input_bfd,
3703 contents + rel->r_offset - 2);
3708 bfd_put_8 (output_bfd, 0xc7,
3709 contents + rel->r_offset - 2);
3710 bfd_put_8 (output_bfd,
3711 0xc0 | ((val >> 3) & 7),
3712 contents + rel->r_offset - 1);
3716 bfd_put_8 (output_bfd, 0x81,
3717 contents + rel->r_offset - 2);
3718 bfd_put_8 (output_bfd,
3719 0xc0 | ((val >> 3) & 7),
3720 contents + rel->r_offset - 1);
3727 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3728 contents + rel->r_offset);
3733 unsigned int val, type;
3735 /* {IE_32,GOTIE}->LE transition:
3736 Originally it can be one of:
3737 subl foo(%reg1), %reg2
3738 movl foo(%reg1), %reg2
3739 addl foo(%reg1), %reg2
3742 movl $foo, %reg2 (6 byte form)
3743 addl $foo, %reg2. */
3744 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3745 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3749 bfd_put_8 (output_bfd, 0xc7,
3750 contents + rel->r_offset - 2);
3751 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3752 contents + rel->r_offset - 1);
3754 else if (type == 0x2b)
3757 bfd_put_8 (output_bfd, 0x81,
3758 contents + rel->r_offset - 2);
3759 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3760 contents + rel->r_offset - 1);
3762 else if (type == 0x03)
3765 bfd_put_8 (output_bfd, 0x81,
3766 contents + rel->r_offset - 2);
3767 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3768 contents + rel->r_offset - 1);
3772 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
3773 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3774 contents + rel->r_offset);
3776 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
3777 contents + rel->r_offset);
3782 if (htab->sgot == NULL)
3787 off = h->got.offset;
3788 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3792 if (local_got_offsets == NULL)
3795 off = local_got_offsets[r_symndx];
3796 offplt = local_tlsdesc_gotents[r_symndx];
3803 Elf_Internal_Rela outrel;
3808 if (htab->srelgot == NULL)
3811 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3813 if (GOT_TLS_GDESC_P (tls_type))
3815 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
3816 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
3817 <= htab->sgotplt->size);
3818 outrel.r_offset = (htab->sgotplt->output_section->vma
3819 + htab->sgotplt->output_offset
3821 + htab->sgotplt_jump_table_size);
3822 sreloc = htab->srelplt;
3823 loc = sreloc->contents;
3824 loc += (htab->next_tls_desc_index++
3825 * sizeof (Elf32_External_Rel));
3826 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3827 <= sreloc->contents + sreloc->size);
3828 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3831 BFD_ASSERT (! unresolved_reloc);
3832 bfd_put_32 (output_bfd,
3833 relocation - elf_i386_dtpoff_base (info),
3834 htab->sgotplt->contents + offplt
3835 + htab->sgotplt_jump_table_size + 4);
3839 bfd_put_32 (output_bfd, 0,
3840 htab->sgotplt->contents + offplt
3841 + htab->sgotplt_jump_table_size + 4);
3845 sreloc = htab->srelgot;
3847 outrel.r_offset = (htab->sgot->output_section->vma
3848 + htab->sgot->output_offset + off);
3850 if (GOT_TLS_GD_P (tls_type))
3851 dr_type = R_386_TLS_DTPMOD32;
3852 else if (GOT_TLS_GDESC_P (tls_type))
3854 else if (tls_type == GOT_TLS_IE_POS)
3855 dr_type = R_386_TLS_TPOFF;
3857 dr_type = R_386_TLS_TPOFF32;
3859 if (dr_type == R_386_TLS_TPOFF && indx == 0)
3860 bfd_put_32 (output_bfd,
3861 relocation - elf_i386_dtpoff_base (info),
3862 htab->sgot->contents + off);
3863 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
3864 bfd_put_32 (output_bfd,
3865 elf_i386_dtpoff_base (info) - relocation,
3866 htab->sgot->contents + off);
3867 else if (dr_type != R_386_TLS_DESC)
3868 bfd_put_32 (output_bfd, 0,
3869 htab->sgot->contents + off);
3870 outrel.r_info = ELF32_R_INFO (indx, dr_type);
3872 loc = sreloc->contents;
3873 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3874 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3875 <= sreloc->contents + sreloc->size);
3876 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3878 if (GOT_TLS_GD_P (tls_type))
3882 BFD_ASSERT (! unresolved_reloc);
3883 bfd_put_32 (output_bfd,
3884 relocation - elf_i386_dtpoff_base (info),
3885 htab->sgot->contents + off + 4);
3889 bfd_put_32 (output_bfd, 0,
3890 htab->sgot->contents + off + 4);
3891 outrel.r_info = ELF32_R_INFO (indx,
3892 R_386_TLS_DTPOFF32);
3893 outrel.r_offset += 4;
3894 sreloc->reloc_count++;
3895 loc += sizeof (Elf32_External_Rel);
3896 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3897 <= sreloc->contents + sreloc->size);
3898 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3901 else if (tls_type == GOT_TLS_IE_BOTH)
3903 bfd_put_32 (output_bfd,
3905 ? relocation - elf_i386_dtpoff_base (info)
3907 htab->sgot->contents + off + 4);
3908 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3909 outrel.r_offset += 4;
3910 sreloc->reloc_count++;
3911 loc += sizeof (Elf32_External_Rel);
3912 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3919 local_got_offsets[r_symndx] |= 1;
3922 if (off >= (bfd_vma) -2
3923 && ! GOT_TLS_GDESC_P (tls_type))
3925 if (r_type == R_386_TLS_GOTDESC
3926 || r_type == R_386_TLS_DESC_CALL)
3928 relocation = htab->sgotplt_jump_table_size + offplt;
3929 unresolved_reloc = FALSE;
3931 else if (r_type == ELF32_R_TYPE (rel->r_info))
3933 bfd_vma g_o_t = htab->sgotplt->output_section->vma
3934 + htab->sgotplt->output_offset;
3935 relocation = htab->sgot->output_section->vma
3936 + htab->sgot->output_offset + off - g_o_t;
3937 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
3938 && tls_type == GOT_TLS_IE_BOTH)
3940 if (r_type == R_386_TLS_IE)
3941 relocation += g_o_t;
3942 unresolved_reloc = FALSE;
3944 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3946 unsigned int val, type;
3949 /* GD->IE transition. */
3950 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3951 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3954 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3956 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
3958 roff = rel->r_offset - 3;
3962 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3964 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
3965 roff = rel->r_offset - 2;
3967 memcpy (contents + roff,
3968 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3969 contents[roff + 7] = 0x80 | (val & 7);
3970 /* If foo is used only with foo@gotntpoff(%reg) and
3971 foo@indntpoff, but not with foo@gottpoff(%reg), change
3972 subl $foo@gottpoff(%reg), %eax
3974 addl $foo@gotntpoff(%reg), %eax. */
3975 if (tls_type == GOT_TLS_IE_POS)
3976 contents[roff + 6] = 0x03;
3977 bfd_put_32 (output_bfd,
3978 htab->sgot->output_section->vma
3979 + htab->sgot->output_offset + off
3980 - htab->sgotplt->output_section->vma
3981 - htab->sgotplt->output_offset,
3982 contents + roff + 8);
3983 /* Skip R_386_PLT32. */
3987 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3989 /* GDesc -> IE transition.
3990 It's originally something like:
3991 leal x@tlsdesc(%ebx), %eax
3994 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
3996 movl x@gottpoff(%ebx), %eax # before negl %eax
3998 Registers other than %eax may be set up here. */
4002 /* First, make sure it's a leal adding ebx to a 32-bit
4003 offset into any register, although it's probably
4004 almost always going to be eax. */
4005 roff = rel->r_offset;
4007 /* Now modify the instruction as appropriate. */
4008 /* To turn a leal into a movl in the form we use it, it
4009 suffices to change the first byte from 0x8d to 0x8b.
4010 aoliva FIXME: should we decide to keep the leal, all
4011 we have to do is remove the statement below, and
4012 adjust the relaxation of R_386_TLS_DESC_CALL. */
4013 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4015 if (tls_type == GOT_TLS_IE_BOTH)
4018 bfd_put_32 (output_bfd,
4019 htab->sgot->output_section->vma
4020 + htab->sgot->output_offset + off
4021 - htab->sgotplt->output_section->vma
4022 - htab->sgotplt->output_offset,
4026 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4028 /* GDesc -> IE transition.
4036 depending on how we transformed the TLS_GOTDESC above.
4041 roff = rel->r_offset;
4043 /* Now modify the instruction as appropriate. */
4044 if (tls_type != GOT_TLS_IE_NEG)
4047 bfd_put_8 (output_bfd, 0x66, contents + roff);
4048 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4053 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4054 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4064 if (! elf_i386_tls_transition (info, input_bfd,
4065 input_section, contents,
4066 symtab_hdr, sym_hashes,
4067 &r_type, GOT_UNKNOWN, rel,
4071 if (r_type != R_386_TLS_LDM)
4073 /* LD->LE transition:
4074 leal foo(%reg), %eax; call ___tls_get_addr.
4076 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
4077 BFD_ASSERT (r_type == R_386_TLS_LE_32);
4078 memcpy (contents + rel->r_offset - 2,
4079 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
4080 /* Skip R_386_PC32/R_386_PLT32. */
4085 if (htab->sgot == NULL)
4088 off = htab->tls_ldm_got.offset;
4093 Elf_Internal_Rela outrel;
4096 if (htab->srelgot == NULL)
4099 outrel.r_offset = (htab->sgot->output_section->vma
4100 + htab->sgot->output_offset + off);
4102 bfd_put_32 (output_bfd, 0,
4103 htab->sgot->contents + off);
4104 bfd_put_32 (output_bfd, 0,
4105 htab->sgot->contents + off + 4);
4106 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
4107 loc = htab->srelgot->contents;
4108 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
4109 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4110 htab->tls_ldm_got.offset |= 1;
4112 relocation = htab->sgot->output_section->vma
4113 + htab->sgot->output_offset + off
4114 - htab->sgotplt->output_section->vma
4115 - htab->sgotplt->output_offset;
4116 unresolved_reloc = FALSE;
4119 case R_386_TLS_LDO_32:
4120 if (info->shared || (input_section->flags & SEC_CODE) == 0)
4121 relocation -= elf_i386_dtpoff_base (info);
4123 /* When converting LDO to LE, we must negate. */
4124 relocation = -elf_i386_tpoff (info, relocation);
4127 case R_386_TLS_LE_32:
4131 Elf_Internal_Rela outrel;
4136 outrel.r_offset = rel->r_offset
4137 + input_section->output_section->vma
4138 + input_section->output_offset;
4139 if (h != NULL && h->dynindx != -1)
4143 if (r_type == R_386_TLS_LE_32)
4144 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4146 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4147 sreloc = elf_section_data (input_section)->sreloc;
4150 loc = sreloc->contents;
4151 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
4152 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4155 else if (r_type == R_386_TLS_LE_32)
4156 relocation = elf_i386_dtpoff_base (info) - relocation;
4158 relocation -= elf_i386_dtpoff_base (info);
4160 else if (r_type == R_386_TLS_LE_32)
4161 relocation = elf_i386_tpoff (info, relocation);
4163 relocation = -elf_i386_tpoff (info, relocation);
4170 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4171 because such sections are not SEC_ALLOC and thus ld.so will
4172 not process them. */
4173 if (unresolved_reloc
4174 && !((input_section->flags & SEC_DEBUGGING) != 0
4177 (*_bfd_error_handler)
4178 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
4181 (long) rel->r_offset,
4183 h->root.root.string);
4188 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4189 contents, rel->r_offset,
4192 if (r != bfd_reloc_ok)
4197 name = h->root.root.string;
4200 name = bfd_elf_string_from_elf_section (input_bfd,
4201 symtab_hdr->sh_link,
4206 name = bfd_section_name (input_bfd, sec);
4209 if (r == bfd_reloc_overflow)
4211 if (! ((*info->callbacks->reloc_overflow)
4212 (info, (h ? &h->root : NULL), name, howto->name,
4213 (bfd_vma) 0, input_bfd, input_section,
4219 (*_bfd_error_handler)
4220 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4221 input_bfd, input_section,
4222 (long) rel->r_offset, name, (int) r);
4231 /* Finish up dynamic symbol handling. We set the contents of various
4232 dynamic sections here. */
4235 elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4236 struct bfd_link_info *info,
4237 struct elf_link_hash_entry *h,
4238 Elf_Internal_Sym *sym)
4240 struct elf_i386_link_hash_table *htab;
4242 htab = elf_i386_hash_table (info);
4244 if (h->plt.offset != (bfd_vma) -1)
4248 Elf_Internal_Rela rel;
4250 asection *plt, *gotplt, *relplt;
4252 /* When building a static executable, use .iplt, .igot.plt and
4253 .rel.iplt sections for STT_GNU_IFUNC symbols. */
4254 if (htab->splt != NULL)
4257 gotplt = htab->sgotplt;
4258 relplt = htab->srelplt;
4263 gotplt = htab->igotplt;
4264 relplt = htab->irelplt;
4267 /* This symbol has an entry in the procedure linkage table. Set
4270 if ((h->dynindx == -1
4271 && !((h->forced_local || info->executable)
4273 && h->type == STT_GNU_IFUNC))
4279 /* Get the index in the procedure linkage table which
4280 corresponds to this symbol. This is the index of this symbol
4281 in all the symbols for which we are making plt entries. The
4282 first entry in the procedure linkage table is reserved.
4284 Get the offset into the .got table of the entry that
4285 corresponds to this function. Each .got entry is 4 bytes.
4286 The first three are reserved.
4288 For static executables, we don't reserve anything. */
4290 if (plt == htab->splt)
4292 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
4293 got_offset = (plt_index + 3) * 4;
4297 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
4298 got_offset = plt_index * 4;
4301 /* Fill in the entry in the procedure linkage table. */
4304 memcpy (plt->contents + h->plt.offset, elf_i386_plt_entry,
4306 bfd_put_32 (output_bfd,
4307 (gotplt->output_section->vma
4308 + gotplt->output_offset
4310 plt->contents + h->plt.offset + 2);
4312 if (htab->is_vxworks)
4314 int s, k, reloc_index;
4316 /* Create the R_386_32 relocation referencing the GOT
4317 for this PLT entry. */
4319 /* S: Current slot number (zero-based). */
4320 s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
4321 /* K: Number of relocations for PLTResolve. */
4323 k = PLTRESOLVE_RELOCS_SHLIB;
4325 k = PLTRESOLVE_RELOCS;
4326 /* Skip the PLTresolve relocations, and the relocations for
4327 the other PLT slots. */
4328 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4329 loc = (htab->srelplt2->contents + reloc_index
4330 * sizeof (Elf32_External_Rel));
4332 rel.r_offset = (htab->splt->output_section->vma
4333 + htab->splt->output_offset
4334 + h->plt.offset + 2),
4335 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4336 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4338 /* Create the R_386_32 relocation referencing the beginning of
4339 the PLT for this GOT entry. */
4340 rel.r_offset = (htab->sgotplt->output_section->vma
4341 + htab->sgotplt->output_offset
4343 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
4344 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4345 loc + sizeof (Elf32_External_Rel));
4350 memcpy (plt->contents + h->plt.offset, elf_i386_pic_plt_entry,
4352 bfd_put_32 (output_bfd, got_offset,
4353 plt->contents + h->plt.offset + 2);
4356 /* Don't fill PLT entry for static executables. */
4357 if (plt == htab->splt)
4359 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4360 plt->contents + h->plt.offset + 7);
4361 bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
4362 plt->contents + h->plt.offset + 12);
4365 /* Fill in the entry in the global offset table. */
4366 bfd_put_32 (output_bfd,
4367 (plt->output_section->vma
4368 + plt->output_offset
4371 gotplt->contents + got_offset);
4373 /* Fill in the entry in the .rel.plt section. */
4374 rel.r_offset = (gotplt->output_section->vma
4375 + gotplt->output_offset
4377 if (h->dynindx == -1
4378 || ((info->executable
4379 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4381 && h->type == STT_GNU_IFUNC))
4383 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4384 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4385 in the .got.plt section. */
4386 bfd_put_32 (output_bfd,
4387 (h->root.u.def.value
4388 + h->root.u.def.section->output_section->vma
4389 + h->root.u.def.section->output_offset),
4390 gotplt->contents + got_offset);
4391 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
4394 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4395 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
4396 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4398 if (!h->def_regular)
4400 /* Mark the symbol as undefined, rather than as defined in
4401 the .plt section. Leave the value if there were any
4402 relocations where pointer equality matters (this is a clue
4403 for the dynamic linker, to make function pointer
4404 comparisons work between an application and shared
4405 library), otherwise set it to zero. If a function is only
4406 called from a binary, there is no need to slow down
4407 shared libraries because of that. */
4408 sym->st_shndx = SHN_UNDEF;
4409 if (!h->pointer_equality_needed)
4414 if (h->got.offset != (bfd_vma) -1
4415 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
4416 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
4418 Elf_Internal_Rela rel;
4421 /* This symbol has an entry in the global offset table. Set it
4424 if (htab->sgot == NULL || htab->srelgot == NULL)
4427 rel.r_offset = (htab->sgot->output_section->vma
4428 + htab->sgot->output_offset
4429 + (h->got.offset & ~(bfd_vma) 1));
4431 /* If this is a static link, or it is a -Bsymbolic link and the
4432 symbol is defined locally or was forced to be local because
4433 of a version file, we just want to emit a RELATIVE reloc.
4434 The entry in the global offset table will already have been
4435 initialized in the relocate_section function. */
4437 && h->type == STT_GNU_IFUNC)
4441 /* Generate R_386_GLOB_DAT. */
4446 if (!h->pointer_equality_needed)
4449 /* For non-shared object, we can't use .got.plt, which
4450 contains the real function addres if we need pointer
4451 equality. We load the GOT entry with the PLT entry. */
4452 asection *plt = htab->splt ? htab->splt : htab->iplt;
4453 bfd_put_32 (output_bfd,
4454 (plt->output_section->vma
4455 + plt->output_offset + h->plt.offset),
4456 htab->sgot->contents + h->got.offset);
4460 else if (info->shared
4461 && SYMBOL_REFERENCES_LOCAL (info, h))
4463 BFD_ASSERT((h->got.offset & 1) != 0);
4464 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4468 BFD_ASSERT((h->got.offset & 1) == 0);
4470 bfd_put_32 (output_bfd, (bfd_vma) 0,
4471 htab->sgot->contents + h->got.offset);
4472 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4475 loc = htab->srelgot->contents;
4476 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
4477 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4482 Elf_Internal_Rela rel;
4485 /* This symbol needs a copy reloc. Set it up. */
4487 if (h->dynindx == -1
4488 || (h->root.type != bfd_link_hash_defined
4489 && h->root.type != bfd_link_hash_defweak)
4490 || htab->srelbss == NULL)
4493 rel.r_offset = (h->root.u.def.value
4494 + h->root.u.def.section->output_section->vma
4495 + h->root.u.def.section->output_offset);
4496 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
4497 loc = htab->srelbss->contents;
4498 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
4499 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4502 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
4503 be NULL for local symbols.
4505 On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it
4506 is relative to the ".got" section. */
4508 && (strcmp (h->root.root.string, "_DYNAMIC") == 0
4509 || (!htab->is_vxworks && h == htab->elf.hgot)))
4510 sym->st_shndx = SHN_ABS;
4515 /* Finish up local dynamic symbol handling. We set the contents of
4516 various dynamic sections here. */
4519 elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4521 struct elf_link_hash_entry *h
4522 = (struct elf_link_hash_entry *) *slot;
4523 struct bfd_link_info *info
4524 = (struct bfd_link_info *) inf;
4526 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4530 /* Used to decide how to sort relocs in an optimal manner for the
4531 dynamic linker, before writing them out. */
4533 static enum elf_reloc_type_class
4534 elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
4536 switch (ELF32_R_TYPE (rela->r_info))
4538 case R_386_RELATIVE:
4539 return reloc_class_relative;
4540 case R_386_JUMP_SLOT:
4541 return reloc_class_plt;
4543 return reloc_class_copy;
4545 return reloc_class_normal;
4549 /* Finish up the dynamic sections. */
4552 elf_i386_finish_dynamic_sections (bfd *output_bfd,
4553 struct bfd_link_info *info)
4555 struct elf_i386_link_hash_table *htab;
4559 htab = elf_i386_hash_table (info);
4560 dynobj = htab->elf.dynobj;
4561 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4563 if (htab->elf.dynamic_sections_created)
4565 Elf32_External_Dyn *dyncon, *dynconend;
4567 if (sdyn == NULL || htab->sgot == NULL)
4570 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4571 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4572 for (; dyncon < dynconend; dyncon++)
4574 Elf_Internal_Dyn dyn;
4577 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4582 if (htab->is_vxworks
4583 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4589 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4594 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4599 dyn.d_un.d_val = s->size;
4603 /* My reading of the SVR4 ABI indicates that the
4604 procedure linkage table relocs (DT_JMPREL) should be
4605 included in the overall relocs (DT_REL). This is
4606 what Solaris does. However, UnixWare can not handle
4607 that case. Therefore, we override the DT_RELSZ entry
4608 here to make it not include the JMPREL relocs. */
4612 dyn.d_un.d_val -= s->size;
4616 /* We may not be using the standard ELF linker script.
4617 If .rel.plt is the first .rel section, we adjust
4618 DT_REL to not include it. */
4622 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4624 dyn.d_un.d_ptr += s->size;
4628 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4631 /* Fill in the first entry in the procedure linkage table. */
4632 if (htab->splt && htab->splt->size > 0)
4636 memcpy (htab->splt->contents, elf_i386_pic_plt0_entry,
4637 sizeof (elf_i386_pic_plt0_entry));
4638 memset (htab->splt->contents + sizeof (elf_i386_pic_plt0_entry),
4639 htab->plt0_pad_byte,
4640 PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry));
4644 memcpy (htab->splt->contents, elf_i386_plt0_entry,
4645 sizeof(elf_i386_plt0_entry));
4646 memset (htab->splt->contents + sizeof (elf_i386_plt0_entry),
4647 htab->plt0_pad_byte,
4648 PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry));
4649 bfd_put_32 (output_bfd,
4650 (htab->sgotplt->output_section->vma
4651 + htab->sgotplt->output_offset
4653 htab->splt->contents + 2);
4654 bfd_put_32 (output_bfd,
4655 (htab->sgotplt->output_section->vma
4656 + htab->sgotplt->output_offset
4658 htab->splt->contents + 8);
4660 if (htab->is_vxworks)
4662 Elf_Internal_Rela rel;
4664 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4665 On IA32 we use REL relocations so the addend goes in
4666 the PLT directly. */
4667 rel.r_offset = (htab->splt->output_section->vma
4668 + htab->splt->output_offset
4670 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4671 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4672 htab->srelplt2->contents);
4673 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
4674 rel.r_offset = (htab->splt->output_section->vma
4675 + htab->splt->output_offset
4677 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4678 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4679 htab->srelplt2->contents +
4680 sizeof (Elf32_External_Rel));
4684 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4685 really seem like the right value. */
4686 elf_section_data (htab->splt->output_section)
4687 ->this_hdr.sh_entsize = 4;
4689 /* Correct the .rel.plt.unloaded relocations. */
4690 if (htab->is_vxworks && !info->shared)
4692 int num_plts = (htab->splt->size / PLT_ENTRY_SIZE) - 1;
4695 p = htab->srelplt2->contents;
4697 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4699 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4701 for (; num_plts; num_plts--)
4703 Elf_Internal_Rela rel;
4704 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4705 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4706 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4707 p += sizeof (Elf32_External_Rel);
4709 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4710 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
4711 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4712 p += sizeof (Elf32_External_Rel);
4720 /* Fill in the first three entries in the global offset table. */
4721 if (htab->sgotplt->size > 0)
4723 bfd_put_32 (output_bfd,
4725 : sdyn->output_section->vma + sdyn->output_offset),
4726 htab->sgotplt->contents);
4727 bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4);
4728 bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8);
4731 elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4;
4734 if (htab->sgot && htab->sgot->size > 0)
4735 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
4737 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4738 htab_traverse (htab->loc_hash_table,
4739 elf_i386_finish_local_dynamic_symbol,
4745 /* Return address for Ith PLT stub in section PLT, for relocation REL
4746 or (bfd_vma) -1 if it should not be included. */
4749 elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4750 const arelent *rel ATTRIBUTE_UNUSED)
4752 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
4755 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
4758 elf_i386_hash_symbol (struct elf_link_hash_entry *h)
4760 if (h->plt.offset != (bfd_vma) -1
4762 && !h->pointer_equality_needed)
4765 return _bfd_elf_hash_symbol (h);
4768 /* Hook called by the linker routine which adds symbols from an object
4772 elf_i386_add_symbol_hook (bfd * abfd ATTRIBUTE_UNUSED,
4773 struct bfd_link_info * info ATTRIBUTE_UNUSED,
4774 Elf_Internal_Sym * sym,
4775 const char ** namep ATTRIBUTE_UNUSED,
4776 flagword * flagsp ATTRIBUTE_UNUSED,
4777 asection ** secp ATTRIBUTE_UNUSED,
4778 bfd_vma * valp ATTRIBUTE_UNUSED)
4780 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
4781 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
4786 #define TARGET_LITTLE_SYM bfd_elf32_i386_vec
4787 #define TARGET_LITTLE_NAME "elf32-i386"
4788 #define ELF_ARCH bfd_arch_i386
4789 #define ELF_MACHINE_CODE EM_386
4790 #define ELF_MAXPAGESIZE 0x1000
4792 #define elf_backend_can_gc_sections 1
4793 #define elf_backend_can_refcount 1
4794 #define elf_backend_want_got_plt 1
4795 #define elf_backend_plt_readonly 1
4796 #define elf_backend_want_plt_sym 0
4797 #define elf_backend_got_header_size 12
4799 /* Support RELA for objdump of prelink objects. */
4800 #define elf_info_to_howto elf_i386_info_to_howto_rel
4801 #define elf_info_to_howto_rel elf_i386_info_to_howto_rel
4803 #define bfd_elf32_mkobject elf_i386_mkobject
4805 #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
4806 #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
4807 #define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
4808 #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
4809 #define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
4811 #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
4812 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4813 #define elf_backend_check_relocs elf_i386_check_relocs
4814 #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
4815 #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
4816 #define elf_backend_fake_sections elf_i386_fake_sections
4817 #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
4818 #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
4819 #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
4820 #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
4821 #define elf_backend_grok_prstatus elf_i386_grok_prstatus
4822 #define elf_backend_grok_psinfo elf_i386_grok_psinfo
4823 #define elf_backend_reloc_type_class elf_i386_reloc_type_class
4824 #define elf_backend_relocate_section elf_i386_relocate_section
4825 #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
4826 #define elf_backend_always_size_sections elf_i386_always_size_sections
4827 #define elf_backend_omit_section_dynsym \
4828 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4829 #define elf_backend_plt_sym_val elf_i386_plt_sym_val
4830 #define elf_backend_hash_symbol elf_i386_hash_symbol
4831 #define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
4832 #undef elf_backend_post_process_headers
4833 #define elf_backend_post_process_headers _bfd_elf_set_osabi
4835 #include "elf32-target.h"
4837 /* FreeBSD support. */
4839 #undef TARGET_LITTLE_SYM
4840 #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
4841 #undef TARGET_LITTLE_NAME
4842 #define TARGET_LITTLE_NAME "elf32-i386-freebsd"
4844 #define ELF_OSABI ELFOSABI_FREEBSD
4846 /* The kernel recognizes executables as valid only if they carry a
4847 "FreeBSD" label in the ELF header. So we put this label on all
4848 executables and (for simplicity) also all other object files. */
4851 elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
4853 _bfd_elf_set_osabi (abfd, info);
4855 #ifdef OLD_FREEBSD_ABI_LABEL
4856 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
4857 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
4861 #undef elf_backend_post_process_headers
4862 #define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
4864 #define elf32_bed elf32_i386_fbsd_bed
4866 #undef elf_backend_add_symbol_hook
4868 #include "elf32-target.h"
4870 /* VxWorks support. */
4872 #undef TARGET_LITTLE_SYM
4873 #define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
4874 #undef TARGET_LITTLE_NAME
4875 #define TARGET_LITTLE_NAME "elf32-i386-vxworks"
4878 /* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */
4880 static struct bfd_link_hash_table *
4881 elf_i386_vxworks_link_hash_table_create (bfd *abfd)
4883 struct bfd_link_hash_table *ret;
4884 struct elf_i386_link_hash_table *htab;
4886 ret = elf_i386_link_hash_table_create (abfd);
4889 htab = (struct elf_i386_link_hash_table *) ret;
4890 htab->is_vxworks = 1;
4891 htab->plt0_pad_byte = 0x90;
4898 #undef elf_backend_relocs_compatible
4899 #undef elf_backend_post_process_headers
4900 #undef bfd_elf32_bfd_link_hash_table_create
4901 #define bfd_elf32_bfd_link_hash_table_create \
4902 elf_i386_vxworks_link_hash_table_create
4903 #undef elf_backend_add_symbol_hook
4904 #define elf_backend_add_symbol_hook \
4905 elf_vxworks_add_symbol_hook
4906 #undef elf_backend_link_output_symbol_hook
4907 #define elf_backend_link_output_symbol_hook \
4908 elf_vxworks_link_output_symbol_hook
4909 #undef elf_backend_emit_relocs
4910 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
4911 #undef elf_backend_final_write_processing
4912 #define elf_backend_final_write_processing \
4913 elf_vxworks_final_write_processing
4915 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
4917 #undef elf_backend_want_plt_sym
4918 #define elf_backend_want_plt_sym 1
4921 #define elf32_bed elf32_i386_vxworks_bed
4923 #include "elf32-target.h"