1 /* Intel 80386/80486-specific support for 32-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
27 #include "elf-vxworks.h"
28 #include "bfd_stdint.h"
32 /* 386 uses REL relocations instead of RELA. */
37 static reloc_howto_type elf_howto_table[]=
39 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
40 bfd_elf_generic_reloc, "R_386_NONE",
41 TRUE, 0x00000000, 0x00000000, FALSE),
42 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
43 bfd_elf_generic_reloc, "R_386_32",
44 TRUE, 0xffffffff, 0xffffffff, FALSE),
45 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
46 bfd_elf_generic_reloc, "R_386_PC32",
47 TRUE, 0xffffffff, 0xffffffff, TRUE),
48 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
49 bfd_elf_generic_reloc, "R_386_GOT32",
50 TRUE, 0xffffffff, 0xffffffff, FALSE),
51 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
52 bfd_elf_generic_reloc, "R_386_PLT32",
53 TRUE, 0xffffffff, 0xffffffff, TRUE),
54 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
55 bfd_elf_generic_reloc, "R_386_COPY",
56 TRUE, 0xffffffff, 0xffffffff, FALSE),
57 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
58 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
59 TRUE, 0xffffffff, 0xffffffff, FALSE),
60 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
61 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
62 TRUE, 0xffffffff, 0xffffffff, FALSE),
63 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_386_RELATIVE",
65 TRUE, 0xffffffff, 0xffffffff, FALSE),
66 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
67 bfd_elf_generic_reloc, "R_386_GOTOFF",
68 TRUE, 0xffffffff, 0xffffffff, FALSE),
69 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_386_GOTPC",
71 TRUE, 0xffffffff, 0xffffffff, TRUE),
73 /* We have a gap in the reloc numbers here.
74 R_386_standard counts the number up to this point, and
75 R_386_ext_offset is the value to subtract from a reloc type of
76 R_386_16 thru R_386_PC8 to form an index into this table. */
77 #define R_386_standard (R_386_GOTPC + 1)
78 #define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
80 /* These relocs are a GNU extension. */
81 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
83 TRUE, 0xffffffff, 0xffffffff, FALSE),
84 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
85 bfd_elf_generic_reloc, "R_386_TLS_IE",
86 TRUE, 0xffffffff, 0xffffffff, FALSE),
87 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
89 TRUE, 0xffffffff, 0xffffffff, FALSE),
90 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
91 bfd_elf_generic_reloc, "R_386_TLS_LE",
92 TRUE, 0xffffffff, 0xffffffff, FALSE),
93 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_386_TLS_GD",
95 TRUE, 0xffffffff, 0xffffffff, FALSE),
96 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
97 bfd_elf_generic_reloc, "R_386_TLS_LDM",
98 TRUE, 0xffffffff, 0xffffffff, FALSE),
99 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
100 bfd_elf_generic_reloc, "R_386_16",
101 TRUE, 0xffff, 0xffff, FALSE),
102 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
103 bfd_elf_generic_reloc, "R_386_PC16",
104 TRUE, 0xffff, 0xffff, TRUE),
105 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
106 bfd_elf_generic_reloc, "R_386_8",
107 TRUE, 0xff, 0xff, FALSE),
108 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
109 bfd_elf_generic_reloc, "R_386_PC8",
110 TRUE, 0xff, 0xff, TRUE),
112 #define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
113 #define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
114 /* These are common with Solaris TLS implementation. */
115 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
117 TRUE, 0xffffffff, 0xffffffff, FALSE),
118 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
119 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
120 TRUE, 0xffffffff, 0xffffffff, FALSE),
121 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
123 TRUE, 0xffffffff, 0xffffffff, FALSE),
124 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
125 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
126 TRUE, 0xffffffff, 0xffffffff, FALSE),
127 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
128 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
129 TRUE, 0xffffffff, 0xffffffff, FALSE),
130 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
131 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
132 TRUE, 0xffffffff, 0xffffffff, FALSE),
134 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
136 TRUE, 0xffffffff, 0xffffffff, FALSE),
137 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
138 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
140 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_386_TLS_DESC",
142 TRUE, 0xffffffff, 0xffffffff, FALSE),
143 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_386_IRELATIVE",
145 TRUE, 0xffffffff, 0xffffffff, FALSE),
148 #define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
149 #define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
151 /* GNU extension to record C++ vtable hierarchy. */
152 HOWTO (R_386_GNU_VTINHERIT, /* type */
154 2, /* size (0 = byte, 1 = short, 2 = long) */
156 FALSE, /* pc_relative */
158 complain_overflow_dont, /* complain_on_overflow */
159 NULL, /* special_function */
160 "R_386_GNU_VTINHERIT", /* name */
161 FALSE, /* partial_inplace */
164 FALSE), /* pcrel_offset */
166 /* GNU extension to record C++ vtable member usage. */
167 HOWTO (R_386_GNU_VTENTRY, /* type */
169 2, /* size (0 = byte, 1 = short, 2 = long) */
171 FALSE, /* pc_relative */
173 complain_overflow_dont, /* complain_on_overflow */
174 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
175 "R_386_GNU_VTENTRY", /* name */
176 FALSE, /* partial_inplace */
179 FALSE) /* pcrel_offset */
181 #define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
185 #ifdef DEBUG_GEN_RELOC
187 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
192 static reloc_howto_type *
193 elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
194 bfd_reloc_code_real_type code)
199 TRACE ("BFD_RELOC_NONE");
200 return &elf_howto_table[R_386_NONE];
203 TRACE ("BFD_RELOC_32");
204 return &elf_howto_table[R_386_32];
207 TRACE ("BFD_RELOC_CTOR");
208 return &elf_howto_table[R_386_32];
210 case BFD_RELOC_32_PCREL:
211 TRACE ("BFD_RELOC_PC32");
212 return &elf_howto_table[R_386_PC32];
214 case BFD_RELOC_386_GOT32:
215 TRACE ("BFD_RELOC_386_GOT32");
216 return &elf_howto_table[R_386_GOT32];
218 case BFD_RELOC_386_PLT32:
219 TRACE ("BFD_RELOC_386_PLT32");
220 return &elf_howto_table[R_386_PLT32];
222 case BFD_RELOC_386_COPY:
223 TRACE ("BFD_RELOC_386_COPY");
224 return &elf_howto_table[R_386_COPY];
226 case BFD_RELOC_386_GLOB_DAT:
227 TRACE ("BFD_RELOC_386_GLOB_DAT");
228 return &elf_howto_table[R_386_GLOB_DAT];
230 case BFD_RELOC_386_JUMP_SLOT:
231 TRACE ("BFD_RELOC_386_JUMP_SLOT");
232 return &elf_howto_table[R_386_JUMP_SLOT];
234 case BFD_RELOC_386_RELATIVE:
235 TRACE ("BFD_RELOC_386_RELATIVE");
236 return &elf_howto_table[R_386_RELATIVE];
238 case BFD_RELOC_386_GOTOFF:
239 TRACE ("BFD_RELOC_386_GOTOFF");
240 return &elf_howto_table[R_386_GOTOFF];
242 case BFD_RELOC_386_GOTPC:
243 TRACE ("BFD_RELOC_386_GOTPC");
244 return &elf_howto_table[R_386_GOTPC];
246 /* These relocs are a GNU extension. */
247 case BFD_RELOC_386_TLS_TPOFF:
248 TRACE ("BFD_RELOC_386_TLS_TPOFF");
249 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
251 case BFD_RELOC_386_TLS_IE:
252 TRACE ("BFD_RELOC_386_TLS_IE");
253 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
255 case BFD_RELOC_386_TLS_GOTIE:
256 TRACE ("BFD_RELOC_386_TLS_GOTIE");
257 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
259 case BFD_RELOC_386_TLS_LE:
260 TRACE ("BFD_RELOC_386_TLS_LE");
261 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
263 case BFD_RELOC_386_TLS_GD:
264 TRACE ("BFD_RELOC_386_TLS_GD");
265 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
267 case BFD_RELOC_386_TLS_LDM:
268 TRACE ("BFD_RELOC_386_TLS_LDM");
269 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
272 TRACE ("BFD_RELOC_16");
273 return &elf_howto_table[R_386_16 - R_386_ext_offset];
275 case BFD_RELOC_16_PCREL:
276 TRACE ("BFD_RELOC_16_PCREL");
277 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
280 TRACE ("BFD_RELOC_8");
281 return &elf_howto_table[R_386_8 - R_386_ext_offset];
283 case BFD_RELOC_8_PCREL:
284 TRACE ("BFD_RELOC_8_PCREL");
285 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
287 /* Common with Sun TLS implementation. */
288 case BFD_RELOC_386_TLS_LDO_32:
289 TRACE ("BFD_RELOC_386_TLS_LDO_32");
290 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
292 case BFD_RELOC_386_TLS_IE_32:
293 TRACE ("BFD_RELOC_386_TLS_IE_32");
294 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
296 case BFD_RELOC_386_TLS_LE_32:
297 TRACE ("BFD_RELOC_386_TLS_LE_32");
298 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
300 case BFD_RELOC_386_TLS_DTPMOD32:
301 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
302 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
304 case BFD_RELOC_386_TLS_DTPOFF32:
305 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
306 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
308 case BFD_RELOC_386_TLS_TPOFF32:
309 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
310 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
312 case BFD_RELOC_386_TLS_GOTDESC:
313 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
314 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
316 case BFD_RELOC_386_TLS_DESC_CALL:
317 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
318 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
320 case BFD_RELOC_386_TLS_DESC:
321 TRACE ("BFD_RELOC_386_TLS_DESC");
322 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
324 case BFD_RELOC_386_IRELATIVE:
325 TRACE ("BFD_RELOC_386_IRELATIVE");
326 return &elf_howto_table[R_386_IRELATIVE];
328 case BFD_RELOC_VTABLE_INHERIT:
329 TRACE ("BFD_RELOC_VTABLE_INHERIT");
330 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
332 case BFD_RELOC_VTABLE_ENTRY:
333 TRACE ("BFD_RELOC_VTABLE_ENTRY");
334 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
344 static reloc_howto_type *
345 elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
350 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
351 if (elf_howto_table[i].name != NULL
352 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
353 return &elf_howto_table[i];
358 static reloc_howto_type *
359 elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
363 if ((indx = r_type) >= R_386_standard
364 && ((indx = r_type - R_386_ext_offset) - R_386_standard
365 >= R_386_ext - R_386_standard)
366 && ((indx = r_type - R_386_tls_offset) - R_386_ext
367 >= R_386_irelative - R_386_ext)
368 && ((indx = r_type - R_386_vt_offset) - R_386_irelative
369 >= R_386_vt - R_386_irelative))
371 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
375 BFD_ASSERT (elf_howto_table [indx].type == r_type);
376 return &elf_howto_table[indx];
380 elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
382 Elf_Internal_Rela *dst)
384 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
385 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
388 /* Return whether a symbol name implies a local label. The UnixWare
389 2.1 cc generates temporary symbols that start with .X, so we
390 recognize them here. FIXME: do other SVR4 compilers also use .X?.
391 If so, we should move the .X recognition into
392 _bfd_elf_is_local_label_name. */
395 elf_i386_is_local_label_name (bfd *abfd, const char *name)
397 if (name[0] == '.' && name[1] == 'X')
400 return _bfd_elf_is_local_label_name (abfd, name);
403 /* Support for core dump NOTE sections. */
406 elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
411 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
413 int pr_version = bfd_get_32 (abfd, note->descdata);
419 elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
422 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
426 size = bfd_get_32 (abfd, note->descdata + 8);
430 switch (note->descsz)
435 case 144: /* Linux/i386 */
437 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
440 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
450 /* Make a ".reg/999" section. */
451 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
452 size, note->descpos + offset);
456 elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
458 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
460 int pr_version = bfd_get_32 (abfd, note->descdata);
465 elf_tdata (abfd)->core_program
466 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
467 elf_tdata (abfd)->core_command
468 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
472 switch (note->descsz)
477 case 124: /* Linux/i386 elf_prpsinfo. */
478 elf_tdata (abfd)->core_program
479 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
480 elf_tdata (abfd)->core_command
481 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
485 /* Note that for some reason, a spurious space is tacked
486 onto the end of the args in some (at least one anyway)
487 implementations, so strip it off if it exists. */
489 char *command = elf_tdata (abfd)->core_command;
490 int n = strlen (command);
492 if (0 < n && command[n - 1] == ' ')
493 command[n - 1] = '\0';
499 /* Functions for the i386 ELF linker.
501 In order to gain some understanding of code in this file without
502 knowing all the intricate details of the linker, note the
505 Functions named elf_i386_* are called by external routines, other
506 functions are only called locally. elf_i386_* functions appear
507 in this file more or less in the order in which they are called
508 from external routines. eg. elf_i386_check_relocs is called
509 early in the link process, elf_i386_finish_dynamic_sections is
510 one of the last functions. */
513 /* The name of the dynamic interpreter. This is put in the .interp
516 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
518 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
519 copying dynamic variables from a shared lib into an app's dynbss
520 section, and instead use a dynamic relocation to point into the
522 #define ELIMINATE_COPY_RELOCS 1
524 /* The size in bytes of an entry in the procedure linkage table. */
526 #define PLT_ENTRY_SIZE 16
528 /* The first entry in an absolute procedure linkage table looks like
529 this. See the SVR4 ABI i386 supplement to see how this works.
530 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
532 static const bfd_byte elf_i386_plt0_entry[12] =
534 0xff, 0x35, /* pushl contents of address */
535 0, 0, 0, 0, /* replaced with address of .got + 4. */
536 0xff, 0x25, /* jmp indirect */
537 0, 0, 0, 0 /* replaced with address of .got + 8. */
540 /* Subsequent entries in an absolute procedure linkage table look like
543 static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
545 0xff, 0x25, /* jmp indirect */
546 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
547 0x68, /* pushl immediate */
548 0, 0, 0, 0, /* replaced with offset into relocation table. */
549 0xe9, /* jmp relative */
550 0, 0, 0, 0 /* replaced with offset to start of .plt. */
553 /* The first entry in a PIC procedure linkage table look like this.
554 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
556 static const bfd_byte elf_i386_pic_plt0_entry[12] =
558 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
559 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
562 /* Subsequent entries in a PIC procedure linkage table look like this. */
564 static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
566 0xff, 0xa3, /* jmp *offset(%ebx) */
567 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
568 0x68, /* pushl immediate */
569 0, 0, 0, 0, /* replaced with offset into relocation table. */
570 0xe9, /* jmp relative */
571 0, 0, 0, 0 /* replaced with offset to start of .plt. */
574 /* On VxWorks, the .rel.plt.unloaded section has absolute relocations
575 for the PLTResolve stub and then for each PLT entry. */
576 #define PLTRESOLVE_RELOCS_SHLIB 0
577 #define PLTRESOLVE_RELOCS 2
578 #define PLT_NON_JUMP_SLOT_RELOCS 2
580 /* i386 ELF linker hash entry. */
582 struct elf_i386_link_hash_entry
584 struct elf_link_hash_entry elf;
586 /* Track dynamic relocs copied for this symbol. */
587 struct elf_dyn_relocs *dyn_relocs;
589 #define GOT_UNKNOWN 0
593 #define GOT_TLS_IE_POS 5
594 #define GOT_TLS_IE_NEG 6
595 #define GOT_TLS_IE_BOTH 7
596 #define GOT_TLS_GDESC 8
597 #define GOT_TLS_GD_BOTH_P(type) \
598 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
599 #define GOT_TLS_GD_P(type) \
600 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
601 #define GOT_TLS_GDESC_P(type) \
602 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
603 #define GOT_TLS_GD_ANY_P(type) \
604 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
605 unsigned char tls_type;
607 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
608 starting at the end of the jump table. */
612 #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
614 struct elf_i386_obj_tdata
616 struct elf_obj_tdata root;
618 /* tls_type for each local got entry. */
619 char *local_got_tls_type;
621 /* GOTPLT entries for TLS descriptors. */
622 bfd_vma *local_tlsdesc_gotent;
625 #define elf_i386_tdata(abfd) \
626 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
628 #define elf_i386_local_got_tls_type(abfd) \
629 (elf_i386_tdata (abfd)->local_got_tls_type)
631 #define elf_i386_local_tlsdesc_gotent(abfd) \
632 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
634 #define is_i386_elf(bfd) \
635 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
636 && elf_tdata (bfd) != NULL \
637 && elf_object_id (bfd) == I386_ELF_TDATA)
640 elf_i386_mkobject (bfd *abfd)
642 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
646 /* i386 ELF linker hash table. */
648 struct elf_i386_link_hash_table
650 struct elf_link_hash_table elf;
652 /* Short-cuts to get to dynamic linker sections. */
656 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
659 /* True if the target system is VxWorks. */
662 /* Value used to fill the last word of the first plt entry. */
663 bfd_byte plt0_pad_byte;
665 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
666 bfd_vma next_tls_desc_index;
669 bfd_signed_vma refcount;
673 /* The amount of space used by the reserved portion of the sgotplt
674 section, plus whatever space is used by the jump slots. */
675 bfd_vma sgotplt_jump_table_size;
677 /* Small local sym cache. */
678 struct sym_cache sym_cache;
680 /* _TLS_MODULE_BASE_ symbol. */
681 struct bfd_link_hash_entry *tls_module_base;
683 /* Used by local STT_GNU_IFUNC symbols. */
684 htab_t loc_hash_table;
685 void *loc_hash_memory;
688 /* Get the i386 ELF linker hash table from a link_info structure. */
690 #define elf_i386_hash_table(p) \
691 ((struct elf_i386_link_hash_table *) ((p)->hash))
693 #define elf_i386_compute_jump_table_size(htab) \
694 ((htab)->next_tls_desc_index * 4)
696 /* Create an entry in an i386 ELF linker hash table. */
698 static struct bfd_hash_entry *
699 elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
700 struct bfd_hash_table *table,
703 /* Allocate the structure if it has not already been allocated by a
707 entry = bfd_hash_allocate (table,
708 sizeof (struct elf_i386_link_hash_entry));
713 /* Call the allocation method of the superclass. */
714 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
717 struct elf_i386_link_hash_entry *eh;
719 eh = (struct elf_i386_link_hash_entry *) entry;
720 eh->dyn_relocs = NULL;
721 eh->tls_type = GOT_UNKNOWN;
722 eh->tlsdesc_got = (bfd_vma) -1;
728 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
729 for local symbol so that we can handle local STT_GNU_IFUNC symbols
730 as global symbol. We reuse indx and dynstr_index for local symbol
731 hash since they aren't used by global symbols in this backend. */
734 elf_i386_local_htab_hash (const void *ptr)
736 struct elf_link_hash_entry *h
737 = (struct elf_link_hash_entry *) ptr;
738 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
741 /* Compare local hash entries. */
744 elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
746 struct elf_link_hash_entry *h1
747 = (struct elf_link_hash_entry *) ptr1;
748 struct elf_link_hash_entry *h2
749 = (struct elf_link_hash_entry *) ptr2;
751 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
754 /* Find and/or create a hash entry for local symbol. */
756 static struct elf_link_hash_entry *
757 elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
758 bfd *abfd, const Elf_Internal_Rela *rel,
761 struct elf_i386_link_hash_entry e, *ret;
762 asection *sec = abfd->sections;
763 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
764 ELF32_R_SYM (rel->r_info));
767 e.elf.indx = sec->id;
768 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
769 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
770 create ? INSERT : NO_INSERT);
777 ret = (struct elf_i386_link_hash_entry *) *slot;
781 ret = (struct elf_i386_link_hash_entry *)
782 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
783 sizeof (struct elf_i386_link_hash_entry));
786 memset (ret, 0, sizeof (*ret));
787 ret->elf.indx = sec->id;
788 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
789 ret->elf.dynindx = -1;
790 ret->elf.plt.offset = (bfd_vma) -1;
791 ret->elf.got.offset = (bfd_vma) -1;
797 /* Create an i386 ELF linker hash table. */
799 static struct bfd_link_hash_table *
800 elf_i386_link_hash_table_create (bfd *abfd)
802 struct elf_i386_link_hash_table *ret;
803 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
805 ret = bfd_malloc (amt);
809 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
810 elf_i386_link_hash_newfunc,
811 sizeof (struct elf_i386_link_hash_entry)))
819 ret->tls_ldm_got.refcount = 0;
820 ret->next_tls_desc_index = 0;
821 ret->sgotplt_jump_table_size = 0;
822 ret->sym_cache.abfd = NULL;
824 ret->srelplt2 = NULL;
825 ret->plt0_pad_byte = 0;
826 ret->tls_module_base = NULL;
828 ret->loc_hash_table = htab_try_create (1024,
829 elf_i386_local_htab_hash,
830 elf_i386_local_htab_eq,
832 ret->loc_hash_memory = objalloc_create ();
833 if (!ret->loc_hash_table || !ret->loc_hash_memory)
839 return &ret->elf.root;
842 /* Destroy an i386 ELF linker hash table. */
845 elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
847 struct elf_i386_link_hash_table *htab
848 = (struct elf_i386_link_hash_table *) hash;
850 if (htab->loc_hash_table)
851 htab_delete (htab->loc_hash_table);
852 if (htab->loc_hash_memory)
853 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
854 _bfd_generic_link_hash_table_free (hash);
857 /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
858 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
862 elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
864 struct elf_i386_link_hash_table *htab;
866 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
869 htab = elf_i386_hash_table (info);
870 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
872 htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
875 || (!info->shared && !htab->srelbss))
879 && !elf_vxworks_create_dynamic_sections (dynobj, info,
886 /* Copy the extra info we tack onto an elf_link_hash_entry. */
889 elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
890 struct elf_link_hash_entry *dir,
891 struct elf_link_hash_entry *ind)
893 struct elf_i386_link_hash_entry *edir, *eind;
895 edir = (struct elf_i386_link_hash_entry *) dir;
896 eind = (struct elf_i386_link_hash_entry *) ind;
898 if (eind->dyn_relocs != NULL)
900 if (edir->dyn_relocs != NULL)
902 struct elf_dyn_relocs **pp;
903 struct elf_dyn_relocs *p;
905 /* Add reloc counts against the indirect sym to the direct sym
906 list. Merge any entries against the same section. */
907 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
909 struct elf_dyn_relocs *q;
911 for (q = edir->dyn_relocs; q != NULL; q = q->next)
912 if (q->sec == p->sec)
914 q->pc_count += p->pc_count;
915 q->count += p->count;
922 *pp = edir->dyn_relocs;
925 edir->dyn_relocs = eind->dyn_relocs;
926 eind->dyn_relocs = NULL;
929 if (ind->root.type == bfd_link_hash_indirect
930 && dir->got.refcount <= 0)
932 edir->tls_type = eind->tls_type;
933 eind->tls_type = GOT_UNKNOWN;
936 if (ELIMINATE_COPY_RELOCS
937 && ind->root.type != bfd_link_hash_indirect
938 && dir->dynamic_adjusted)
940 /* If called to transfer flags for a weakdef during processing
941 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
942 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
943 dir->ref_dynamic |= ind->ref_dynamic;
944 dir->ref_regular |= ind->ref_regular;
945 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
946 dir->needs_plt |= ind->needs_plt;
947 dir->pointer_equality_needed |= ind->pointer_equality_needed;
950 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
960 /* Return TRUE if the TLS access code sequence support transition
964 elf_i386_check_tls_transition (bfd *abfd, asection *sec,
966 Elf_Internal_Shdr *symtab_hdr,
967 struct elf_link_hash_entry **sym_hashes,
969 const Elf_Internal_Rela *rel,
970 const Elf_Internal_Rela *relend)
972 unsigned int val, type;
973 unsigned long r_symndx;
974 struct elf_link_hash_entry *h;
977 /* Get the section contents. */
978 if (contents == NULL)
980 if (elf_section_data (sec)->this_hdr.contents != NULL)
981 contents = elf_section_data (sec)->this_hdr.contents;
984 /* FIXME: How to better handle error condition? */
985 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
988 /* Cache the section contents for elf_link_input_bfd. */
989 elf_section_data (sec)->this_hdr.contents = contents;
993 offset = rel->r_offset;
998 if (offset < 2 || (rel + 1) >= relend)
1001 type = bfd_get_8 (abfd, contents + offset - 2);
1002 if (r_type == R_386_TLS_GD)
1004 /* Check transition from GD access model. Only
1005 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1006 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1007 can transit to different access model. */
1008 if ((offset + 10) > sec->size ||
1009 (type != 0x8d && type != 0x04))
1012 val = bfd_get_8 (abfd, contents + offset - 1);
1015 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1019 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1022 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1027 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1028 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1031 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1037 /* Check transition from LD access model. Only
1038 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1039 can transit to different access model. */
1040 if (type != 0x8d || (offset + 9) > sec->size)
1043 val = bfd_get_8 (abfd, contents + offset - 1);
1044 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1048 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1051 r_symndx = ELF32_R_SYM (rel[1].r_info);
1052 if (r_symndx < symtab_hdr->sh_info)
1055 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1056 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1057 may be versioned. */
1059 && h->root.root.string != NULL
1060 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1061 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
1062 && (strncmp (h->root.root.string, "___tls_get_addr",
1066 /* Check transition from IE access model:
1067 movl foo@indntpoff(%rip), %eax
1068 movl foo@indntpoff(%rip), %reg
1069 addl foo@indntpoff(%rip), %reg
1072 if (offset < 1 || (offset + 4) > sec->size)
1075 /* Check "movl foo@tpoff(%rip), %eax" first. */
1076 val = bfd_get_8 (abfd, contents + offset - 1);
1083 /* Check movl|addl foo@tpoff(%rip), %reg. */
1084 type = bfd_get_8 (abfd, contents + offset - 2);
1085 return ((type == 0x8b || type == 0x03)
1086 && (val & 0xc7) == 0x05);
1088 case R_386_TLS_GOTIE:
1089 case R_386_TLS_IE_32:
1090 /* Check transition from {IE_32,GOTIE} access model:
1091 subl foo@{tpoff,gontoff}(%reg1), %reg2
1092 movl foo@{tpoff,gontoff}(%reg1), %reg2
1093 addl foo@{tpoff,gontoff}(%reg1), %reg2
1096 if (offset < 2 || (offset + 4) > sec->size)
1099 val = bfd_get_8 (abfd, contents + offset - 1);
1100 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1103 type = bfd_get_8 (abfd, contents + offset - 2);
1104 return type == 0x8b || type == 0x2b || type == 0x03;
1106 case R_386_TLS_GOTDESC:
1107 /* Check transition from GDesc access model:
1108 leal x@tlsdesc(%ebx), %eax
1110 Make sure it's a leal adding ebx to a 32-bit offset
1111 into any register, although it's probably almost always
1114 if (offset < 2 || (offset + 4) > sec->size)
1117 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1120 val = bfd_get_8 (abfd, contents + offset - 1);
1121 return (val & 0xc7) == 0x83;
1123 case R_386_TLS_DESC_CALL:
1124 /* Check transition from GDesc access model:
1125 call *x@tlsdesc(%rax)
1127 if (offset + 2 <= sec->size)
1129 /* Make sure that it's a call *x@tlsdesc(%rax). */
1130 static i386_opcode16 call = { { 0xff, 0x10 } };
1131 return bfd_get_16 (abfd, contents + offset) == call.i;
1141 /* Return TRUE if the TLS access transition is OK or no transition
1142 will be performed. Update R_TYPE if there is a transition. */
1145 elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1146 asection *sec, bfd_byte *contents,
1147 Elf_Internal_Shdr *symtab_hdr,
1148 struct elf_link_hash_entry **sym_hashes,
1149 unsigned int *r_type, int tls_type,
1150 const Elf_Internal_Rela *rel,
1151 const Elf_Internal_Rela *relend,
1152 struct elf_link_hash_entry *h,
1153 unsigned long r_symndx)
1155 unsigned int from_type = *r_type;
1156 unsigned int to_type = from_type;
1157 bfd_boolean check = TRUE;
1162 case R_386_TLS_GOTDESC:
1163 case R_386_TLS_DESC_CALL:
1164 case R_386_TLS_IE_32:
1166 case R_386_TLS_GOTIE:
1170 to_type = R_386_TLS_LE_32;
1171 else if (from_type != R_386_TLS_IE
1172 && from_type != R_386_TLS_GOTIE)
1173 to_type = R_386_TLS_IE_32;
1176 /* When we are called from elf_i386_relocate_section, CONTENTS
1177 isn't NULL and there may be additional transitions based on
1179 if (contents != NULL)
1181 unsigned int new_to_type = to_type;
1186 && (tls_type & GOT_TLS_IE))
1187 new_to_type = R_386_TLS_LE_32;
1189 if (to_type == R_386_TLS_GD
1190 || to_type == R_386_TLS_GOTDESC
1191 || to_type == R_386_TLS_DESC_CALL)
1193 if (tls_type == GOT_TLS_IE_POS)
1194 new_to_type = R_386_TLS_GOTIE;
1195 else if (tls_type & GOT_TLS_IE)
1196 new_to_type = R_386_TLS_IE_32;
1199 /* We checked the transition before when we were called from
1200 elf_i386_check_relocs. We only want to check the new
1201 transition which hasn't been checked before. */
1202 check = new_to_type != to_type && from_type == to_type;
1203 to_type = new_to_type;
1210 to_type = R_386_TLS_LE_32;
1217 /* Return TRUE if there is no transition. */
1218 if (from_type == to_type)
1221 /* Check if the transition can be performed. */
1223 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1224 symtab_hdr, sym_hashes,
1225 from_type, rel, relend))
1227 reloc_howto_type *from, *to;
1230 from = elf_i386_rtype_to_howto (abfd, from_type);
1231 to = elf_i386_rtype_to_howto (abfd, to_type);
1234 name = h->root.root.string;
1237 Elf_Internal_Sym *isym;
1238 struct elf_i386_link_hash_table *htab;
1239 htab = elf_i386_hash_table (info);
1240 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1242 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1245 (*_bfd_error_handler)
1246 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1247 "in section `%A' failed"),
1248 abfd, sec, from->name, to->name, name,
1249 (unsigned long) rel->r_offset);
1250 bfd_set_error (bfd_error_bad_value);
1258 /* Look through the relocs for a section during the first phase, and
1259 calculate needed space in the global offset table, procedure linkage
1260 table, and dynamic reloc sections. */
1263 elf_i386_check_relocs (bfd *abfd,
1264 struct bfd_link_info *info,
1266 const Elf_Internal_Rela *relocs)
1268 struct elf_i386_link_hash_table *htab;
1269 Elf_Internal_Shdr *symtab_hdr;
1270 struct elf_link_hash_entry **sym_hashes;
1271 const Elf_Internal_Rela *rel;
1272 const Elf_Internal_Rela *rel_end;
1275 if (info->relocatable)
1278 BFD_ASSERT (is_i386_elf (abfd));
1280 htab = elf_i386_hash_table (info);
1281 symtab_hdr = &elf_symtab_hdr (abfd);
1282 sym_hashes = elf_sym_hashes (abfd);
1286 rel_end = relocs + sec->reloc_count;
1287 for (rel = relocs; rel < rel_end; rel++)
1289 unsigned int r_type;
1290 unsigned long r_symndx;
1291 struct elf_link_hash_entry *h;
1292 Elf_Internal_Sym *isym;
1295 r_symndx = ELF32_R_SYM (rel->r_info);
1296 r_type = ELF32_R_TYPE (rel->r_info);
1298 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1300 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1306 if (r_symndx < symtab_hdr->sh_info)
1308 /* A local symbol. */
1309 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1314 /* Check relocation against local STT_GNU_IFUNC symbol. */
1315 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1317 h = elf_i386_get_local_sym_hash (htab, abfd, rel,
1322 /* Fake a STT_GNU_IFUNC symbol. */
1323 h->type = STT_GNU_IFUNC;
1326 h->forced_local = 1;
1327 h->root.type = bfd_link_hash_defined;
1335 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1336 while (h->root.type == bfd_link_hash_indirect
1337 || h->root.type == bfd_link_hash_warning)
1338 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1343 /* Create the ifunc sections for static executables. If we
1344 never see an indirect function symbol nor we are building
1345 a static executable, those sections will be empty and
1346 won't appear in output. */
1357 if (!_bfd_elf_create_ifunc_sections (abfd, info))
1362 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
1363 it here if it is defined in a non-shared object. */
1364 if (h->type == STT_GNU_IFUNC
1367 /* It is referenced by a non-shared object. */
1370 /* STT_GNU_IFUNC symbol must go through PLT. */
1371 h->plt.refcount += 1;
1373 /* STT_GNU_IFUNC needs dynamic sections. */
1374 if (htab->elf.dynobj == NULL)
1375 htab->elf.dynobj = abfd;
1380 if (h->root.root.string)
1381 name = h->root.root.string;
1383 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1385 (*_bfd_error_handler)
1386 (_("%B: relocation %s against STT_GNU_IFUNC "
1387 "symbol `%s' isn't handled by %s"), abfd,
1388 elf_howto_table[r_type].name,
1389 name, __FUNCTION__);
1390 bfd_set_error (bfd_error_bad_value);
1395 h->pointer_equality_needed = 1;
1398 /* We must copy these reloc types into the
1399 output file. Create a reloc section in
1400 dynobj and make room for this reloc. */
1401 sreloc = _bfd_elf_create_ifunc_dyn_reloc
1402 (abfd, info, sec, sreloc,
1403 &((struct elf_i386_link_hash_entry *) h)->dyn_relocs);
1418 h->got.refcount += 1;
1419 if (htab->elf.sgot == NULL
1420 && !_bfd_elf_create_got_section (htab->elf.dynobj,
1430 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1431 symtab_hdr, sym_hashes,
1432 &r_type, GOT_UNKNOWN,
1433 rel, rel_end, h, r_symndx))
1439 htab->tls_ldm_got.refcount += 1;
1443 /* This symbol requires a procedure linkage table entry. We
1444 actually build the entry in adjust_dynamic_symbol,
1445 because this might be a case of linking PIC code which is
1446 never referenced by a dynamic object, in which case we
1447 don't need to generate a procedure linkage table entry
1450 /* If this is a local symbol, we resolve it directly without
1451 creating a procedure linkage table entry. */
1456 h->plt.refcount += 1;
1459 case R_386_TLS_IE_32:
1461 case R_386_TLS_GOTIE:
1463 info->flags |= DF_STATIC_TLS;
1468 case R_386_TLS_GOTDESC:
1469 case R_386_TLS_DESC_CALL:
1470 /* This symbol requires a global offset table entry. */
1472 int tls_type, old_tls_type;
1477 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1478 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
1479 case R_386_TLS_GOTDESC:
1480 case R_386_TLS_DESC_CALL:
1481 tls_type = GOT_TLS_GDESC; break;
1482 case R_386_TLS_IE_32:
1483 if (ELF32_R_TYPE (rel->r_info) == r_type)
1484 tls_type = GOT_TLS_IE_NEG;
1486 /* If this is a GD->IE transition, we may use either of
1487 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
1488 tls_type = GOT_TLS_IE;
1491 case R_386_TLS_GOTIE:
1492 tls_type = GOT_TLS_IE_POS; break;
1497 h->got.refcount += 1;
1498 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1502 bfd_signed_vma *local_got_refcounts;
1504 /* This is a global offset table entry for a local symbol. */
1505 local_got_refcounts = elf_local_got_refcounts (abfd);
1506 if (local_got_refcounts == NULL)
1510 size = symtab_hdr->sh_info;
1511 size *= (sizeof (bfd_signed_vma)
1512 + sizeof (bfd_vma) + sizeof(char));
1513 local_got_refcounts = bfd_zalloc (abfd, size);
1514 if (local_got_refcounts == NULL)
1516 elf_local_got_refcounts (abfd) = local_got_refcounts;
1517 elf_i386_local_tlsdesc_gotent (abfd)
1518 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
1519 elf_i386_local_got_tls_type (abfd)
1520 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
1522 local_got_refcounts[r_symndx] += 1;
1523 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1526 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1527 tls_type |= old_tls_type;
1528 /* If a TLS symbol is accessed using IE at least once,
1529 there is no point to use dynamic model for it. */
1530 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1531 && (! GOT_TLS_GD_ANY_P (old_tls_type)
1532 || (tls_type & GOT_TLS_IE) == 0))
1534 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
1535 tls_type = old_tls_type;
1536 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1537 && GOT_TLS_GD_ANY_P (tls_type))
1538 tls_type |= old_tls_type;
1541 if (h->root.root.string)
1542 name = h->root.root.string;
1544 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1546 (*_bfd_error_handler)
1547 (_("%B: `%s' accessed both as normal and "
1548 "thread local symbol"),
1554 if (old_tls_type != tls_type)
1557 elf_i386_hash_entry (h)->tls_type = tls_type;
1559 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1567 if (htab->elf.sgot == NULL)
1569 if (htab->elf.dynobj == NULL)
1570 htab->elf.dynobj = abfd;
1571 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1574 if (r_type != R_386_TLS_IE)
1578 case R_386_TLS_LE_32:
1582 info->flags |= DF_STATIC_TLS;
1587 if (h != NULL && info->executable)
1589 /* If this reloc is in a read-only section, we might
1590 need a copy reloc. We can't check reliably at this
1591 stage whether the section is read-only, as input
1592 sections have not yet been mapped to output sections.
1593 Tentatively set the flag for now, and correct in
1594 adjust_dynamic_symbol. */
1597 /* We may need a .plt entry if the function this reloc
1598 refers to is in a shared lib. */
1599 h->plt.refcount += 1;
1600 if (r_type != R_386_PC32)
1601 h->pointer_equality_needed = 1;
1604 /* If we are creating a shared library, and this is a reloc
1605 against a global symbol, or a non PC relative reloc
1606 against a local symbol, then we need to copy the reloc
1607 into the shared library. However, if we are linking with
1608 -Bsymbolic, we do not need to copy a reloc against a
1609 global symbol which is defined in an object we are
1610 including in the link (i.e., DEF_REGULAR is set). At
1611 this point we have not seen all the input files, so it is
1612 possible that DEF_REGULAR is not set now but will be set
1613 later (it is never cleared). In case of a weak definition,
1614 DEF_REGULAR may be cleared later by a strong definition in
1615 a shared library. We account for that possibility below by
1616 storing information in the relocs_copied field of the hash
1617 table entry. A similar situation occurs when creating
1618 shared libraries and symbol visibility changes render the
1621 If on the other hand, we are creating an executable, we
1622 may need to keep relocations for symbols satisfied by a
1623 dynamic library if we manage to avoid copy relocs for the
1626 && (sec->flags & SEC_ALLOC) != 0
1627 && (r_type != R_386_PC32
1629 && (! SYMBOLIC_BIND (info, h)
1630 || h->root.type == bfd_link_hash_defweak
1631 || !h->def_regular))))
1632 || (ELIMINATE_COPY_RELOCS
1634 && (sec->flags & SEC_ALLOC) != 0
1636 && (h->root.type == bfd_link_hash_defweak
1637 || !h->def_regular)))
1639 struct elf_dyn_relocs *p;
1640 struct elf_dyn_relocs **head;
1642 /* We must copy these reloc types into the output file.
1643 Create a reloc section in dynobj and make room for
1647 if (htab->elf.dynobj == NULL)
1648 htab->elf.dynobj = abfd;
1650 sreloc = _bfd_elf_make_dynamic_reloc_section
1651 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1657 /* If this is a global symbol, we count the number of
1658 relocations we need for this symbol. */
1661 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
1665 /* Track dynamic relocs needed for local syms too.
1666 We really need local syms available to do this
1670 Elf_Internal_Sym *isym;
1672 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1677 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1681 vpp = &elf_section_data (s)->local_dynrel;
1682 head = (struct elf_dyn_relocs **)vpp;
1686 if (p == NULL || p->sec != sec)
1688 bfd_size_type amt = sizeof *p;
1689 p = bfd_alloc (htab->elf.dynobj, amt);
1700 if (r_type == R_386_PC32)
1705 /* This relocation describes the C++ object vtable hierarchy.
1706 Reconstruct it for later use during GC. */
1707 case R_386_GNU_VTINHERIT:
1708 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1712 /* This relocation describes which C++ vtable entries are actually
1713 used. Record for later use during GC. */
1714 case R_386_GNU_VTENTRY:
1715 BFD_ASSERT (h != NULL);
1717 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
1729 /* Return the section that should be marked against GC for a given
1733 elf_i386_gc_mark_hook (asection *sec,
1734 struct bfd_link_info *info,
1735 Elf_Internal_Rela *rel,
1736 struct elf_link_hash_entry *h,
1737 Elf_Internal_Sym *sym)
1740 switch (ELF32_R_TYPE (rel->r_info))
1742 case R_386_GNU_VTINHERIT:
1743 case R_386_GNU_VTENTRY:
1747 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1750 /* Update the got entry reference counts for the section being removed. */
1753 elf_i386_gc_sweep_hook (bfd *abfd,
1754 struct bfd_link_info *info,
1756 const Elf_Internal_Rela *relocs)
1758 Elf_Internal_Shdr *symtab_hdr;
1759 struct elf_link_hash_entry **sym_hashes;
1760 bfd_signed_vma *local_got_refcounts;
1761 const Elf_Internal_Rela *rel, *relend;
1763 if (info->relocatable)
1766 elf_section_data (sec)->local_dynrel = NULL;
1768 symtab_hdr = &elf_symtab_hdr (abfd);
1769 sym_hashes = elf_sym_hashes (abfd);
1770 local_got_refcounts = elf_local_got_refcounts (abfd);
1772 relend = relocs + sec->reloc_count;
1773 for (rel = relocs; rel < relend; rel++)
1775 unsigned long r_symndx;
1776 unsigned int r_type;
1777 struct elf_link_hash_entry *h = NULL;
1779 r_symndx = ELF32_R_SYM (rel->r_info);
1780 if (r_symndx >= symtab_hdr->sh_info)
1782 struct elf_i386_link_hash_entry *eh;
1783 struct elf_dyn_relocs **pp;
1784 struct elf_dyn_relocs *p;
1786 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1787 while (h->root.type == bfd_link_hash_indirect
1788 || h->root.type == bfd_link_hash_warning)
1789 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1790 eh = (struct elf_i386_link_hash_entry *) h;
1792 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1795 /* Everything must go for SEC. */
1801 r_type = ELF32_R_TYPE (rel->r_info);
1802 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1803 symtab_hdr, sym_hashes,
1804 &r_type, GOT_UNKNOWN,
1805 rel, relend, h, r_symndx))
1811 if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0)
1812 elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1;
1816 case R_386_TLS_GOTDESC:
1817 case R_386_TLS_DESC_CALL:
1818 case R_386_TLS_IE_32:
1820 case R_386_TLS_GOTIE:
1824 if (h->got.refcount > 0)
1825 h->got.refcount -= 1;
1827 else if (local_got_refcounts != NULL)
1829 if (local_got_refcounts[r_symndx] > 0)
1830 local_got_refcounts[r_symndx] -= 1;
1843 if (h->plt.refcount > 0)
1844 h->plt.refcount -= 1;
1856 /* Adjust a symbol defined by a dynamic object and referenced by a
1857 regular object. The current definition is in some section of the
1858 dynamic object, but we're not including those sections. We have to
1859 change the definition to something the rest of the link can
1863 elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
1864 struct elf_link_hash_entry *h)
1866 struct elf_i386_link_hash_table *htab;
1869 /* STT_GNU_IFUNC symbol must go through PLT. */
1870 if (h->type == STT_GNU_IFUNC)
1872 if (h->plt.refcount <= 0)
1874 h->plt.offset = (bfd_vma) -1;
1880 /* If this is a function, put it in the procedure linkage table. We
1881 will fill in the contents of the procedure linkage table later,
1882 when we know the address of the .got section. */
1883 if (h->type == STT_FUNC
1886 if (h->plt.refcount <= 0
1887 || SYMBOL_CALLS_LOCAL (info, h)
1888 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1889 && h->root.type == bfd_link_hash_undefweak))
1891 /* This case can occur if we saw a PLT32 reloc in an input
1892 file, but the symbol was never referred to by a dynamic
1893 object, or if all references were garbage collected. In
1894 such a case, we don't actually need to build a procedure
1895 linkage table, and we can just do a PC32 reloc instead. */
1896 h->plt.offset = (bfd_vma) -1;
1903 /* It's possible that we incorrectly decided a .plt reloc was
1904 needed for an R_386_PC32 reloc to a non-function sym in
1905 check_relocs. We can't decide accurately between function and
1906 non-function syms in check-relocs; Objects loaded later in
1907 the link may change h->type. So fix it now. */
1908 h->plt.offset = (bfd_vma) -1;
1910 /* If this is a weak symbol, and there is a real definition, the
1911 processor independent code will have arranged for us to see the
1912 real definition first, and we can just use the same value. */
1913 if (h->u.weakdef != NULL)
1915 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1916 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1917 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1918 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1919 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1920 h->non_got_ref = h->u.weakdef->non_got_ref;
1924 /* This is a reference to a symbol defined by a dynamic object which
1925 is not a function. */
1927 /* If we are creating a shared library, we must presume that the
1928 only references to the symbol are via the global offset table.
1929 For such cases we need not do anything here; the relocations will
1930 be handled correctly by relocate_section. */
1934 /* If there are no references to this symbol that do not use the
1935 GOT, we don't need to generate a copy reloc. */
1936 if (!h->non_got_ref)
1939 /* If -z nocopyreloc was given, we won't generate them either. */
1940 if (info->nocopyreloc)
1946 htab = elf_i386_hash_table (info);
1948 /* If there aren't any dynamic relocs in read-only sections, then
1949 we can keep the dynamic relocs and avoid the copy reloc. This
1950 doesn't work on VxWorks, where we can not have dynamic relocations
1951 (other than copy and jump slot relocations) in an executable. */
1952 if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks)
1954 struct elf_i386_link_hash_entry * eh;
1955 struct elf_dyn_relocs *p;
1957 eh = (struct elf_i386_link_hash_entry *) h;
1958 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1960 s = p->sec->output_section;
1961 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1974 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1975 h->root.root.string);
1979 /* We must allocate the symbol in our .dynbss section, which will
1980 become part of the .bss section of the executable. There will be
1981 an entry for this symbol in the .dynsym section. The dynamic
1982 object will contain position independent code, so all references
1983 from the dynamic object to this symbol will go through the global
1984 offset table. The dynamic linker will use the .dynsym entry to
1985 determine the address it must put in the global offset table, so
1986 both the dynamic object and the regular object will refer to the
1987 same memory location for the variable. */
1989 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
1990 copy the initial value out of the dynamic object and into the
1991 runtime process image. */
1992 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1994 htab->srelbss->size += sizeof (Elf32_External_Rel);
2000 return _bfd_elf_adjust_dynamic_copy (h, s);
2003 /* Allocate space in .plt, .got and associated reloc sections for
2007 elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2009 struct bfd_link_info *info;
2010 struct elf_i386_link_hash_table *htab;
2011 struct elf_i386_link_hash_entry *eh;
2012 struct elf_dyn_relocs *p;
2014 if (h->root.type == bfd_link_hash_indirect)
2017 if (h->root.type == bfd_link_hash_warning)
2018 /* When warning symbols are created, they **replace** the "real"
2019 entry in the hash table, thus we never get to see the real
2020 symbol in a hash traversal. So look at it now. */
2021 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2022 eh = (struct elf_i386_link_hash_entry *) h;
2024 info = (struct bfd_link_info *) inf;
2025 htab = elf_i386_hash_table (info);
2027 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2028 here if it is defined and referenced in a non-shared object. */
2029 if (h->type == STT_GNU_IFUNC
2031 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
2034 else if (htab->elf.dynamic_sections_created
2035 && h->plt.refcount > 0)
2037 /* Make sure this symbol is output as a dynamic symbol.
2038 Undefined weak syms won't yet be marked as dynamic. */
2039 if (h->dynindx == -1
2040 && !h->forced_local)
2042 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2047 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2049 asection *s = htab->elf.splt;
2051 /* If this is the first .plt entry, make room for the special
2054 s->size += PLT_ENTRY_SIZE;
2056 h->plt.offset = s->size;
2058 /* If this symbol is not defined in a regular file, and we are
2059 not generating a shared library, then set the symbol to this
2060 location in the .plt. This is required to make function
2061 pointers compare as equal between the normal executable and
2062 the shared library. */
2066 h->root.u.def.section = s;
2067 h->root.u.def.value = h->plt.offset;
2070 /* Make room for this entry. */
2071 s->size += PLT_ENTRY_SIZE;
2073 /* We also need to make an entry in the .got.plt section, which
2074 will be placed in the .got section by the linker script. */
2075 htab->elf.sgotplt->size += 4;
2077 /* We also need to make an entry in the .rel.plt section. */
2078 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2079 htab->next_tls_desc_index++;
2081 if (htab->is_vxworks && !info->shared)
2083 /* VxWorks has a second set of relocations for each PLT entry
2084 in executables. They go in a separate relocation section,
2085 which is processed by the kernel loader. */
2087 /* There are two relocations for the initial PLT entry: an
2088 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2089 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2091 if (h->plt.offset == PLT_ENTRY_SIZE)
2092 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2094 /* There are two extra relocations for each subsequent PLT entry:
2095 an R_386_32 relocation for the GOT entry, and an R_386_32
2096 relocation for the PLT entry. */
2098 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2103 h->plt.offset = (bfd_vma) -1;
2109 h->plt.offset = (bfd_vma) -1;
2113 eh->tlsdesc_got = (bfd_vma) -1;
2115 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
2116 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2117 if (h->got.refcount > 0
2120 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
2121 h->got.offset = (bfd_vma) -1;
2122 else if (h->got.refcount > 0)
2126 int tls_type = elf_i386_hash_entry(h)->tls_type;
2128 /* Make sure this symbol is output as a dynamic symbol.
2129 Undefined weak syms won't yet be marked as dynamic. */
2130 if (h->dynindx == -1
2131 && !h->forced_local)
2133 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2138 if (GOT_TLS_GDESC_P (tls_type))
2140 eh->tlsdesc_got = htab->elf.sgotplt->size
2141 - elf_i386_compute_jump_table_size (htab);
2142 htab->elf.sgotplt->size += 8;
2143 h->got.offset = (bfd_vma) -2;
2145 if (! GOT_TLS_GDESC_P (tls_type)
2146 || GOT_TLS_GD_P (tls_type))
2148 h->got.offset = s->size;
2150 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2151 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2154 dyn = htab->elf.dynamic_sections_created;
2155 /* R_386_TLS_IE_32 needs one dynamic relocation,
2156 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2157 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2158 need two), R_386_TLS_GD needs one if local symbol and two if
2160 if (tls_type == GOT_TLS_IE_BOTH)
2161 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
2162 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
2163 || (tls_type & GOT_TLS_IE))
2164 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
2165 else if (GOT_TLS_GD_P (tls_type))
2166 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
2167 else if (! GOT_TLS_GDESC_P (tls_type)
2168 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2169 || h->root.type != bfd_link_hash_undefweak)
2171 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2172 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
2173 if (GOT_TLS_GDESC_P (tls_type))
2174 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2177 h->got.offset = (bfd_vma) -1;
2179 if (eh->dyn_relocs == NULL)
2182 /* In the shared -Bsymbolic case, discard space allocated for
2183 dynamic pc-relative relocs against symbols which turn out to be
2184 defined in regular objects. For the normal shared case, discard
2185 space for pc-relative relocs that have become local due to symbol
2186 visibility changes. */
2190 /* The only reloc that uses pc_count is R_386_PC32, which will
2191 appear on a call or on something like ".long foo - .". We
2192 want calls to protected symbols to resolve directly to the
2193 function rather than going via the plt. If people want
2194 function pointer comparisons to work as expected then they
2195 should avoid writing assembly like ".long foo - .". */
2196 if (SYMBOL_CALLS_LOCAL (info, h))
2198 struct elf_dyn_relocs **pp;
2200 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2202 p->count -= p->pc_count;
2211 if (htab->is_vxworks)
2213 struct elf_dyn_relocs **pp;
2214 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2216 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2223 /* Also discard relocs on undefined weak syms with non-default
2225 if (eh->dyn_relocs != NULL
2226 && h->root.type == bfd_link_hash_undefweak)
2228 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2229 eh->dyn_relocs = NULL;
2231 /* Make sure undefined weak symbols are output as a dynamic
2233 else if (h->dynindx == -1
2234 && !h->forced_local)
2236 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2241 else if (ELIMINATE_COPY_RELOCS)
2243 /* For the non-shared case, discard space for relocs against
2244 symbols which turn out to need copy relocs or are not
2250 || (htab->elf.dynamic_sections_created
2251 && (h->root.type == bfd_link_hash_undefweak
2252 || h->root.type == bfd_link_hash_undefined))))
2254 /* Make sure this symbol is output as a dynamic symbol.
2255 Undefined weak syms won't yet be marked as dynamic. */
2256 if (h->dynindx == -1
2257 && !h->forced_local)
2259 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2263 /* If that succeeded, we know we'll be keeping all the
2265 if (h->dynindx != -1)
2269 eh->dyn_relocs = NULL;
2274 /* Finally, allocate space. */
2275 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2279 sreloc = elf_section_data (p->sec)->sreloc;
2281 BFD_ASSERT (sreloc != NULL);
2282 sreloc->size += p->count * sizeof (Elf32_External_Rel);
2288 /* Allocate space in .plt, .got and associated reloc sections for
2289 local dynamic relocs. */
2292 elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2294 struct elf_link_hash_entry *h
2295 = (struct elf_link_hash_entry *) *slot;
2297 if (h->type != STT_GNU_IFUNC
2301 || h->root.type != bfd_link_hash_defined)
2304 return elf_i386_allocate_dynrelocs (h, inf);
2307 /* Find any dynamic relocs that apply to read-only sections. */
2310 elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2312 struct elf_i386_link_hash_entry *eh;
2313 struct elf_dyn_relocs *p;
2315 if (h->root.type == bfd_link_hash_warning)
2316 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2318 eh = (struct elf_i386_link_hash_entry *) h;
2319 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2321 asection *s = p->sec->output_section;
2323 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2325 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2327 info->flags |= DF_TEXTREL;
2329 /* Not an error, just cut short the traversal. */
2336 /* Set the sizes of the dynamic sections. */
2339 elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2340 struct bfd_link_info *info)
2342 struct elf_i386_link_hash_table *htab;
2348 htab = elf_i386_hash_table (info);
2349 dynobj = htab->elf.dynobj;
2353 if (htab->elf.dynamic_sections_created)
2355 /* Set the contents of the .interp section to the interpreter. */
2356 if (info->executable)
2358 s = bfd_get_section_by_name (dynobj, ".interp");
2361 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2362 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2366 /* Set up .got offsets for local syms, and space for local dynamic
2368 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2370 bfd_signed_vma *local_got;
2371 bfd_signed_vma *end_local_got;
2372 char *local_tls_type;
2373 bfd_vma *local_tlsdesc_gotent;
2374 bfd_size_type locsymcount;
2375 Elf_Internal_Shdr *symtab_hdr;
2378 if (! is_i386_elf (ibfd))
2381 for (s = ibfd->sections; s != NULL; s = s->next)
2383 struct elf_dyn_relocs *p;
2385 for (p = ((struct elf_dyn_relocs *)
2386 elf_section_data (s)->local_dynrel);
2390 if (!bfd_is_abs_section (p->sec)
2391 && bfd_is_abs_section (p->sec->output_section))
2393 /* Input section has been discarded, either because
2394 it is a copy of a linkonce section or due to
2395 linker script /DISCARD/, so we'll be discarding
2398 else if (htab->is_vxworks
2399 && strcmp (p->sec->output_section->name,
2402 /* Relocations in vxworks .tls_vars sections are
2403 handled specially by the loader. */
2405 else if (p->count != 0)
2407 srel = elf_section_data (p->sec)->sreloc;
2408 srel->size += p->count * sizeof (Elf32_External_Rel);
2409 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2410 info->flags |= DF_TEXTREL;
2415 local_got = elf_local_got_refcounts (ibfd);
2419 symtab_hdr = &elf_symtab_hdr (ibfd);
2420 locsymcount = symtab_hdr->sh_info;
2421 end_local_got = local_got + locsymcount;
2422 local_tls_type = elf_i386_local_got_tls_type (ibfd);
2423 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
2425 srel = htab->elf.srelgot;
2426 for (; local_got < end_local_got;
2427 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
2429 *local_tlsdesc_gotent = (bfd_vma) -1;
2432 if (GOT_TLS_GDESC_P (*local_tls_type))
2434 *local_tlsdesc_gotent = htab->elf.sgotplt->size
2435 - elf_i386_compute_jump_table_size (htab);
2436 htab->elf.sgotplt->size += 8;
2437 *local_got = (bfd_vma) -2;
2439 if (! GOT_TLS_GDESC_P (*local_tls_type)
2440 || GOT_TLS_GD_P (*local_tls_type))
2442 *local_got = s->size;
2444 if (GOT_TLS_GD_P (*local_tls_type)
2445 || *local_tls_type == GOT_TLS_IE_BOTH)
2449 || GOT_TLS_GD_ANY_P (*local_tls_type)
2450 || (*local_tls_type & GOT_TLS_IE))
2452 if (*local_tls_type == GOT_TLS_IE_BOTH)
2453 srel->size += 2 * sizeof (Elf32_External_Rel);
2454 else if (GOT_TLS_GD_P (*local_tls_type)
2455 || ! GOT_TLS_GDESC_P (*local_tls_type))
2456 srel->size += sizeof (Elf32_External_Rel);
2457 if (GOT_TLS_GDESC_P (*local_tls_type))
2458 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2462 *local_got = (bfd_vma) -1;
2466 if (htab->tls_ldm_got.refcount > 0)
2468 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2470 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2471 htab->elf.sgot->size += 8;
2472 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
2475 htab->tls_ldm_got.offset = -1;
2477 /* Allocate global sym .plt and .got entries, and space for global
2478 sym dynamic relocs. */
2479 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
2481 /* Allocate .plt and .got entries, and space for local symbols. */
2482 htab_traverse (htab->loc_hash_table,
2483 elf_i386_allocate_local_dynrelocs,
2486 /* For every jump slot reserved in the sgotplt, reloc_count is
2487 incremented. However, when we reserve space for TLS descriptors,
2488 it's not incremented, so in order to compute the space reserved
2489 for them, it suffices to multiply the reloc count by the jump
2491 if (htab->elf.srelplt)
2492 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2494 /* We now have determined the sizes of the various dynamic sections.
2495 Allocate memory for them. */
2497 for (s = dynobj->sections; s != NULL; s = s->next)
2499 bfd_boolean strip_section = TRUE;
2501 if ((s->flags & SEC_LINKER_CREATED) == 0)
2504 if (s == htab->elf.splt
2505 || s == htab->elf.sgot
2506 || s == htab->elf.sgotplt
2507 || s == htab->elf.iplt
2508 || s == htab->elf.igotplt
2509 || s == htab->sdynbss)
2511 /* Strip this section if we don't need it; see the
2513 /* We'd like to strip these sections if they aren't needed, but if
2514 we've exported dynamic symbols from them we must leave them.
2515 It's too late to tell BFD to get rid of the symbols. */
2517 if (htab->elf.hplt != NULL)
2518 strip_section = FALSE;
2520 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
2523 && s != htab->elf.srelplt
2524 && s != htab->srelplt2)
2527 /* We use the reloc_count field as a counter if we need
2528 to copy relocs into the output file. */
2533 /* It's not one of our sections, so don't allocate space. */
2539 /* If we don't need this section, strip it from the
2540 output file. This is mostly to handle .rel.bss and
2541 .rel.plt. We must create both sections in
2542 create_dynamic_sections, because they must be created
2543 before the linker maps input sections to output
2544 sections. The linker does that before
2545 adjust_dynamic_symbol is called, and it is that
2546 function which decides whether anything needs to go
2547 into these sections. */
2549 s->flags |= SEC_EXCLUDE;
2553 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2556 /* Allocate memory for the section contents. We use bfd_zalloc
2557 here in case unused entries are not reclaimed before the
2558 section's contents are written out. This should not happen,
2559 but this way if it does, we get a R_386_NONE reloc instead
2561 s->contents = bfd_zalloc (dynobj, s->size);
2562 if (s->contents == NULL)
2566 if (htab->elf.dynamic_sections_created)
2568 /* Add some entries to the .dynamic section. We fill in the
2569 values later, in elf_i386_finish_dynamic_sections, but we
2570 must add the entries now so that we get the correct size for
2571 the .dynamic section. The DT_DEBUG entry is filled in by the
2572 dynamic linker and used by the debugger. */
2573 #define add_dynamic_entry(TAG, VAL) \
2574 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2576 if (info->executable)
2578 if (!add_dynamic_entry (DT_DEBUG, 0))
2582 if (htab->elf.splt->size != 0)
2584 if (!add_dynamic_entry (DT_PLTGOT, 0)
2585 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2586 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2587 || !add_dynamic_entry (DT_JMPREL, 0))
2593 if (!add_dynamic_entry (DT_REL, 0)
2594 || !add_dynamic_entry (DT_RELSZ, 0)
2595 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
2598 /* If any dynamic relocs apply to a read-only section,
2599 then we need a DT_TEXTREL entry. */
2600 if ((info->flags & DF_TEXTREL) == 0)
2601 elf_link_hash_traverse (&htab->elf,
2602 elf_i386_readonly_dynrelocs, info);
2604 if ((info->flags & DF_TEXTREL) != 0)
2606 if (!add_dynamic_entry (DT_TEXTREL, 0))
2610 if (htab->is_vxworks
2611 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2614 #undef add_dynamic_entry
2620 elf_i386_always_size_sections (bfd *output_bfd,
2621 struct bfd_link_info *info)
2623 asection *tls_sec = elf_hash_table (info)->tls_sec;
2627 struct elf_link_hash_entry *tlsbase;
2629 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
2630 "_TLS_MODULE_BASE_",
2631 FALSE, FALSE, FALSE);
2633 if (tlsbase && tlsbase->type == STT_TLS)
2635 struct bfd_link_hash_entry *bh = NULL;
2636 const struct elf_backend_data *bed
2637 = get_elf_backend_data (output_bfd);
2639 if (!(_bfd_generic_link_add_one_symbol
2640 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
2641 tls_sec, 0, NULL, FALSE,
2642 bed->collect, &bh)))
2645 elf_i386_hash_table (info)->tls_module_base = bh;
2647 tlsbase = (struct elf_link_hash_entry *)bh;
2648 tlsbase->def_regular = 1;
2649 tlsbase->other = STV_HIDDEN;
2650 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
2657 /* Set the correct type for an x86 ELF section. We do this by the
2658 section name, which is a hack, but ought to work. */
2661 elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2662 Elf_Internal_Shdr *hdr,
2665 register const char *name;
2667 name = bfd_get_section_name (abfd, sec);
2669 /* This is an ugly, but unfortunately necessary hack that is
2670 needed when producing EFI binaries on x86. It tells
2671 elf.c:elf_fake_sections() not to consider ".reloc" as a section
2672 containing ELF relocation info. We need this hack in order to
2673 be able to generate ELF binaries that can be translated into
2674 EFI applications (which are essentially COFF objects). Those
2675 files contain a COFF ".reloc" section inside an ELFNN object,
2676 which would normally cause BFD to segfault because it would
2677 attempt to interpret this section as containing relocation
2678 entries for section "oc". With this hack enabled, ".reloc"
2679 will be treated as a normal data section, which will avoid the
2680 segfault. However, you won't be able to create an ELFNN binary
2681 with a section named "oc" that needs relocations, but that's
2682 the kind of ugly side-effects you get when detecting section
2683 types based on their names... In practice, this limitation is
2684 unlikely to bite. */
2685 if (strcmp (name, ".reloc") == 0)
2686 hdr->sh_type = SHT_PROGBITS;
2691 /* _TLS_MODULE_BASE_ needs to be treated especially when linking
2692 executables. Rather than setting it to the beginning of the TLS
2693 section, we have to set it to the end. This function may be called
2694 multiple times, it is idempotent. */
2697 elf_i386_set_tls_module_base (struct bfd_link_info *info)
2699 struct bfd_link_hash_entry *base;
2701 if (!info->executable)
2704 base = elf_i386_hash_table (info)->tls_module_base;
2709 base->u.def.value = elf_hash_table (info)->tls_size;
2712 /* Return the base VMA address which should be subtracted from real addresses
2713 when resolving @dtpoff relocation.
2714 This is PT_TLS segment p_vaddr. */
2717 elf_i386_dtpoff_base (struct bfd_link_info *info)
2719 /* If tls_sec is NULL, we should have signalled an error already. */
2720 if (elf_hash_table (info)->tls_sec == NULL)
2722 return elf_hash_table (info)->tls_sec->vma;
2725 /* Return the relocation value for @tpoff relocation
2726 if STT_TLS virtual address is ADDRESS. */
2729 elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
2731 struct elf_link_hash_table *htab = elf_hash_table (info);
2733 /* If tls_sec is NULL, we should have signalled an error already. */
2734 if (htab->tls_sec == NULL)
2736 return htab->tls_size + htab->tls_sec->vma - address;
2739 /* Relocate an i386 ELF section. */
2742 elf_i386_relocate_section (bfd *output_bfd,
2743 struct bfd_link_info *info,
2745 asection *input_section,
2747 Elf_Internal_Rela *relocs,
2748 Elf_Internal_Sym *local_syms,
2749 asection **local_sections)
2751 struct elf_i386_link_hash_table *htab;
2752 Elf_Internal_Shdr *symtab_hdr;
2753 struct elf_link_hash_entry **sym_hashes;
2754 bfd_vma *local_got_offsets;
2755 bfd_vma *local_tlsdesc_gotents;
2756 Elf_Internal_Rela *rel;
2757 Elf_Internal_Rela *relend;
2758 bfd_boolean is_vxworks_tls;
2760 BFD_ASSERT (is_i386_elf (input_bfd));
2762 htab = elf_i386_hash_table (info);
2763 symtab_hdr = &elf_symtab_hdr (input_bfd);
2764 sym_hashes = elf_sym_hashes (input_bfd);
2765 local_got_offsets = elf_local_got_offsets (input_bfd);
2766 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
2767 /* We have to handle relocations in vxworks .tls_vars sections
2768 specially, because the dynamic loader is 'weird'. */
2769 is_vxworks_tls = (htab->is_vxworks && info->shared
2770 && !strcmp (input_section->output_section->name,
2773 elf_i386_set_tls_module_base (info);
2776 relend = relocs + input_section->reloc_count;
2777 for (; rel < relend; rel++)
2779 unsigned int r_type;
2780 reloc_howto_type *howto;
2781 unsigned long r_symndx;
2782 struct elf_link_hash_entry *h;
2783 Elf_Internal_Sym *sym;
2785 bfd_vma off, offplt;
2787 bfd_boolean unresolved_reloc;
2788 bfd_reloc_status_type r;
2792 r_type = ELF32_R_TYPE (rel->r_info);
2793 if (r_type == R_386_GNU_VTINHERIT
2794 || r_type == R_386_GNU_VTENTRY)
2797 if ((indx = r_type) >= R_386_standard
2798 && ((indx = r_type - R_386_ext_offset) - R_386_standard
2799 >= R_386_ext - R_386_standard)
2800 && ((indx = r_type - R_386_tls_offset) - R_386_ext
2801 >= R_386_irelative - R_386_ext))
2803 (*_bfd_error_handler)
2804 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
2805 input_bfd, input_section, r_type);
2806 bfd_set_error (bfd_error_bad_value);
2809 howto = elf_howto_table + indx;
2811 r_symndx = ELF32_R_SYM (rel->r_info);
2815 unresolved_reloc = FALSE;
2816 if (r_symndx < symtab_hdr->sh_info)
2818 sym = local_syms + r_symndx;
2819 sec = local_sections[r_symndx];
2820 relocation = (sec->output_section->vma
2821 + sec->output_offset
2824 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
2825 && ((sec->flags & SEC_MERGE) != 0
2826 || (info->relocatable
2827 && sec->output_offset != 0)))
2830 bfd_byte *where = contents + rel->r_offset;
2832 switch (howto->size)
2835 addend = bfd_get_8 (input_bfd, where);
2836 if (howto->pc_relative)
2838 addend = (addend ^ 0x80) - 0x80;
2843 addend = bfd_get_16 (input_bfd, where);
2844 if (howto->pc_relative)
2846 addend = (addend ^ 0x8000) - 0x8000;
2851 addend = bfd_get_32 (input_bfd, where);
2852 if (howto->pc_relative)
2854 addend = (addend ^ 0x80000000) - 0x80000000;
2862 if (info->relocatable)
2863 addend += sec->output_offset;
2866 asection *msec = sec;
2867 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
2869 addend -= relocation;
2870 addend += msec->output_section->vma + msec->output_offset;
2873 switch (howto->size)
2876 /* FIXME: overflow checks. */
2877 if (howto->pc_relative)
2879 bfd_put_8 (input_bfd, addend, where);
2882 if (howto->pc_relative)
2884 bfd_put_16 (input_bfd, addend, where);
2887 if (howto->pc_relative)
2889 bfd_put_32 (input_bfd, addend, where);
2893 else if (ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2895 /* Relocate against local STT_GNU_IFUNC symbol. */
2896 h = elf_i386_get_local_sym_hash (htab, input_bfd,
2901 /* Set STT_GNU_IFUNC symbol value. */
2902 h->root.u.def.value = sym->st_value;
2903 h->root.u.def.section = sec;
2910 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2911 r_symndx, symtab_hdr, sym_hashes,
2913 unresolved_reloc, warned);
2916 if (sec != NULL && elf_discarded_section (sec))
2918 /* For relocs against symbols from removed linkonce sections,
2919 or sections discarded by a linker script, we just want the
2920 section contents zeroed. Avoid any special processing. */
2921 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2927 if (info->relocatable)
2930 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2931 it here if it is defined in a non-shared object. */
2933 && h->type == STT_GNU_IFUNC
2936 asection *plt, *gotplt, *base_got;
2940 if ((input_section->flags & SEC_ALLOC) == 0
2941 || h->plt.offset == (bfd_vma) -1)
2944 /* STT_GNU_IFUNC symbol must go through PLT. */
2945 if (htab->elf.splt != NULL)
2947 plt = htab->elf.splt;
2948 gotplt = htab->elf.sgotplt;
2952 plt = htab->elf.iplt;
2953 gotplt = htab->elf.igotplt;
2956 relocation = (plt->output_section->vma
2957 + plt->output_offset + h->plt.offset);
2962 if (h->root.root.string)
2963 name = h->root.root.string;
2965 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2967 (*_bfd_error_handler)
2968 (_("%B: relocation %s against STT_GNU_IFUNC "
2969 "symbol `%s' isn't handled by %s"), input_bfd,
2970 elf_howto_table[r_type].name,
2971 name, __FUNCTION__);
2972 bfd_set_error (bfd_error_bad_value);
2976 /* Generate dynamic relcoation only when there is a
2977 non-GOF reference in a shared object. */
2978 if (info->shared && h->non_got_ref)
2980 Elf_Internal_Rela outrel;
2985 /* Need a dynamic relocation to get the real function
2987 offset = _bfd_elf_section_offset (output_bfd,
2991 if (offset == (bfd_vma) -1
2992 || offset == (bfd_vma) -2)
2995 outrel.r_offset = (input_section->output_section->vma
2996 + input_section->output_offset
2999 if (h->dynindx == -1
3001 || info->executable)
3003 /* This symbol is resolved locally. */
3004 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3005 bfd_put_32 (output_bfd,
3006 (h->root.u.def.value
3007 + h->root.u.def.section->output_section->vma
3008 + h->root.u.def.section->output_offset),
3012 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3014 sreloc = htab->elf.irelifunc;
3015 loc = sreloc->contents;
3016 loc += (sreloc->reloc_count++
3017 * sizeof (Elf32_External_Rel));
3018 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3020 /* If this reloc is against an external symbol, we
3021 do not want to fiddle with the addend. Otherwise,
3022 we need to include the symbol value so that it
3023 becomes an addend for the dynamic reloc. For an
3024 internal symbol, we have updated addend. */
3033 base_got = htab->elf.sgot;
3034 off = h->got.offset;
3036 if (base_got == NULL)
3039 if (off == (bfd_vma) -1)
3041 /* We can't use h->got.offset here to save state, or
3042 even just remember the offset, as finish_dynamic_symbol
3043 would use that as offset into .got. */
3045 if (htab->elf.splt != NULL)
3047 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3048 off = (plt_index + 3) * 4;
3049 base_got = htab->elf.sgotplt;
3053 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
3054 off = plt_index * 4;
3055 base_got = htab->elf.igotplt;
3058 if (h->dynindx == -1
3062 /* This references the local defitionion. We must
3063 initialize this entry in the global offset table.
3064 Since the offset must always be a multiple of 8,
3065 we use the least significant bit to record
3066 whether we have initialized it already.
3068 When doing a dynamic link, we create a .rela.got
3069 relocation entry to initialize the value. This
3070 is done in the finish_dynamic_symbol routine. */
3075 bfd_put_32 (output_bfd, relocation,
3076 base_got->contents + off);
3083 /* Adjust for static executables. */
3084 if (htab->elf.splt == NULL)
3085 relocation += gotplt->output_offset;
3089 relocation = (base_got->output_section->vma
3090 + base_got->output_offset + off
3091 - gotplt->output_section->vma
3092 - gotplt->output_offset);
3093 /* Adjust for static executables. */
3094 if (htab->elf.splt == NULL)
3095 relocation += gotplt->output_offset;
3101 relocation -= (gotplt->output_section->vma
3102 + gotplt->output_offset);
3110 /* Relocation is to the entry for this symbol in the global
3112 if (htab->elf.sgot == NULL)
3119 off = h->got.offset;
3120 dyn = htab->elf.dynamic_sections_created;
3121 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3123 && SYMBOL_REFERENCES_LOCAL (info, h))
3124 || (ELF_ST_VISIBILITY (h->other)
3125 && h->root.type == bfd_link_hash_undefweak))
3127 /* This is actually a static link, or it is a
3128 -Bsymbolic link and the symbol is defined
3129 locally, or the symbol was forced to be local
3130 because of a version file. We must initialize
3131 this entry in the global offset table. Since the
3132 offset must always be a multiple of 4, we use the
3133 least significant bit to record whether we have
3134 initialized it already.
3136 When doing a dynamic link, we create a .rel.got
3137 relocation entry to initialize the value. This
3138 is done in the finish_dynamic_symbol routine. */
3143 bfd_put_32 (output_bfd, relocation,
3144 htab->elf.sgot->contents + off);
3149 unresolved_reloc = FALSE;
3153 if (local_got_offsets == NULL)
3156 off = local_got_offsets[r_symndx];
3158 /* The offset must always be a multiple of 4. We use
3159 the least significant bit to record whether we have
3160 already generated the necessary reloc. */
3165 bfd_put_32 (output_bfd, relocation,
3166 htab->elf.sgot->contents + off);
3171 Elf_Internal_Rela outrel;
3174 s = htab->elf.srelgot;
3178 outrel.r_offset = (htab->elf.sgot->output_section->vma
3179 + htab->elf.sgot->output_offset
3181 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3183 loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
3184 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3187 local_got_offsets[r_symndx] |= 1;
3191 if (off >= (bfd_vma) -2)
3194 relocation = htab->elf.sgot->output_section->vma
3195 + htab->elf.sgot->output_offset + off
3196 - htab->elf.sgotplt->output_section->vma
3197 - htab->elf.sgotplt->output_offset;
3201 /* Relocation is relative to the start of the global offset
3204 /* Check to make sure it isn't a protected function symbol
3205 for shared library since it may not be local when used
3206 as function address. We also need to make sure that a
3207 symbol is defined locally. */
3208 if (info->shared && h)
3210 if (!h->def_regular)
3214 switch (ELF_ST_VISIBILITY (h->other))
3217 v = _("hidden symbol");
3220 v = _("internal symbol");
3223 v = _("protected symbol");
3230 (*_bfd_error_handler)
3231 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3232 input_bfd, v, h->root.root.string);
3233 bfd_set_error (bfd_error_bad_value);
3236 else if (!info->executable
3237 && h->type == STT_FUNC
3238 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3240 (*_bfd_error_handler)
3241 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3242 input_bfd, h->root.root.string);
3243 bfd_set_error (bfd_error_bad_value);
3248 /* Note that sgot is not involved in this
3249 calculation. We always want the start of .got.plt. If we
3250 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
3251 permitted by the ABI, we might have to change this
3253 relocation -= htab->elf.sgotplt->output_section->vma
3254 + htab->elf.sgotplt->output_offset;
3258 /* Use global offset table as symbol value. */
3259 relocation = htab->elf.sgotplt->output_section->vma
3260 + htab->elf.sgotplt->output_offset;
3261 unresolved_reloc = FALSE;
3265 /* Relocation is to the entry for this symbol in the
3266 procedure linkage table. */
3268 /* Resolve a PLT32 reloc against a local symbol directly,
3269 without using the procedure linkage table. */
3273 if (h->plt.offset == (bfd_vma) -1
3274 || htab->elf.splt == NULL)
3276 /* We didn't make a PLT entry for this symbol. This
3277 happens when statically linking PIC code, or when
3278 using -Bsymbolic. */
3282 relocation = (htab->elf.splt->output_section->vma
3283 + htab->elf.splt->output_offset
3285 unresolved_reloc = FALSE;
3290 if ((input_section->flags & SEC_ALLOC) == 0
3296 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3297 || h->root.type != bfd_link_hash_undefweak)
3298 && (r_type != R_386_PC32
3299 || !SYMBOL_CALLS_LOCAL (info, h)))
3300 || (ELIMINATE_COPY_RELOCS
3307 || h->root.type == bfd_link_hash_undefweak
3308 || h->root.type == bfd_link_hash_undefined)))
3310 Elf_Internal_Rela outrel;
3312 bfd_boolean skip, relocate;
3315 /* When generating a shared object, these relocations
3316 are copied into the output file to be resolved at run
3323 _bfd_elf_section_offset (output_bfd, info, input_section,
3325 if (outrel.r_offset == (bfd_vma) -1)
3327 else if (outrel.r_offset == (bfd_vma) -2)
3328 skip = TRUE, relocate = TRUE;
3329 outrel.r_offset += (input_section->output_section->vma
3330 + input_section->output_offset);
3333 memset (&outrel, 0, sizeof outrel);
3336 && (r_type == R_386_PC32
3338 || !SYMBOLIC_BIND (info, h)
3339 || !h->def_regular))
3340 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3343 /* This symbol is local, or marked to become local. */
3345 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3348 sreloc = elf_section_data (input_section)->sreloc;
3350 BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
3352 loc = sreloc->contents;
3353 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3355 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3357 /* If this reloc is against an external symbol, we do
3358 not want to fiddle with the addend. Otherwise, we
3359 need to include the symbol value so that it becomes
3360 an addend for the dynamic reloc. */
3369 Elf_Internal_Rela outrel;
3373 outrel.r_offset = rel->r_offset
3374 + input_section->output_section->vma
3375 + input_section->output_offset;
3376 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3377 sreloc = elf_section_data (input_section)->sreloc;
3380 loc = sreloc->contents;
3381 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3382 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3387 case R_386_TLS_GOTDESC:
3388 case R_386_TLS_DESC_CALL:
3389 case R_386_TLS_IE_32:
3390 case R_386_TLS_GOTIE:
3391 tls_type = GOT_UNKNOWN;
3392 if (h == NULL && local_got_offsets)
3393 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3395 tls_type = elf_i386_hash_entry(h)->tls_type;
3396 if (tls_type == GOT_TLS_IE)
3397 tls_type = GOT_TLS_IE_NEG;
3399 if (! elf_i386_tls_transition (info, input_bfd,
3400 input_section, contents,
3401 symtab_hdr, sym_hashes,
3402 &r_type, tls_type, rel,
3403 relend, h, r_symndx))
3406 if (r_type == R_386_TLS_LE_32)
3408 BFD_ASSERT (! unresolved_reloc);
3409 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3414 /* GD->LE transition. */
3415 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3418 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3420 movl %gs:0, %eax; subl $foo@tpoff, %eax
3421 (6 byte form of subl). */
3422 memcpy (contents + rel->r_offset - 3,
3423 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3424 roff = rel->r_offset + 5;
3428 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3430 movl %gs:0, %eax; subl $foo@tpoff, %eax
3431 (6 byte form of subl). */
3432 memcpy (contents + rel->r_offset - 2,
3433 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3434 roff = rel->r_offset + 6;
3436 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
3438 /* Skip R_386_PC32/R_386_PLT32. */
3442 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3444 /* GDesc -> LE transition.
3445 It's originally something like:
3446 leal x@tlsdesc(%ebx), %eax
3450 Registers other than %eax may be set up here. */
3455 roff = rel->r_offset;
3456 val = bfd_get_8 (input_bfd, contents + roff - 1);
3458 /* Now modify the instruction as appropriate. */
3459 /* aoliva FIXME: remove the above and xor the byte
3461 bfd_put_8 (output_bfd, val ^ 0x86,
3462 contents + roff - 1);
3463 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3467 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3469 /* GDesc -> LE transition.
3477 roff = rel->r_offset;
3478 bfd_put_8 (output_bfd, 0x66, contents + roff);
3479 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3482 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
3486 /* IE->LE transition:
3487 Originally it can be one of:
3495 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3498 /* movl foo, %eax. */
3499 bfd_put_8 (output_bfd, 0xb8,
3500 contents + rel->r_offset - 1);
3506 type = bfd_get_8 (input_bfd,
3507 contents + rel->r_offset - 2);
3512 bfd_put_8 (output_bfd, 0xc7,
3513 contents + rel->r_offset - 2);
3514 bfd_put_8 (output_bfd,
3515 0xc0 | ((val >> 3) & 7),
3516 contents + rel->r_offset - 1);
3520 bfd_put_8 (output_bfd, 0x81,
3521 contents + rel->r_offset - 2);
3522 bfd_put_8 (output_bfd,
3523 0xc0 | ((val >> 3) & 7),
3524 contents + rel->r_offset - 1);
3531 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3532 contents + rel->r_offset);
3537 unsigned int val, type;
3539 /* {IE_32,GOTIE}->LE transition:
3540 Originally it can be one of:
3541 subl foo(%reg1), %reg2
3542 movl foo(%reg1), %reg2
3543 addl foo(%reg1), %reg2
3546 movl $foo, %reg2 (6 byte form)
3547 addl $foo, %reg2. */
3548 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3549 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3553 bfd_put_8 (output_bfd, 0xc7,
3554 contents + rel->r_offset - 2);
3555 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3556 contents + rel->r_offset - 1);
3558 else if (type == 0x2b)
3561 bfd_put_8 (output_bfd, 0x81,
3562 contents + rel->r_offset - 2);
3563 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3564 contents + rel->r_offset - 1);
3566 else if (type == 0x03)
3569 bfd_put_8 (output_bfd, 0x81,
3570 contents + rel->r_offset - 2);
3571 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3572 contents + rel->r_offset - 1);
3576 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
3577 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3578 contents + rel->r_offset);
3580 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
3581 contents + rel->r_offset);
3586 if (htab->elf.sgot == NULL)
3591 off = h->got.offset;
3592 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3596 if (local_got_offsets == NULL)
3599 off = local_got_offsets[r_symndx];
3600 offplt = local_tlsdesc_gotents[r_symndx];
3607 Elf_Internal_Rela outrel;
3612 if (htab->elf.srelgot == NULL)
3615 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3617 if (GOT_TLS_GDESC_P (tls_type))
3619 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
3620 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
3621 <= htab->elf.sgotplt->size);
3622 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3623 + htab->elf.sgotplt->output_offset
3625 + htab->sgotplt_jump_table_size);
3626 sreloc = htab->elf.srelplt;
3627 loc = sreloc->contents;
3628 loc += (htab->next_tls_desc_index++
3629 * sizeof (Elf32_External_Rel));
3630 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3631 <= sreloc->contents + sreloc->size);
3632 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3635 BFD_ASSERT (! unresolved_reloc);
3636 bfd_put_32 (output_bfd,
3637 relocation - elf_i386_dtpoff_base (info),
3638 htab->elf.sgotplt->contents + offplt
3639 + htab->sgotplt_jump_table_size + 4);
3643 bfd_put_32 (output_bfd, 0,
3644 htab->elf.sgotplt->contents + offplt
3645 + htab->sgotplt_jump_table_size + 4);
3649 sreloc = htab->elf.srelgot;
3651 outrel.r_offset = (htab->elf.sgot->output_section->vma
3652 + htab->elf.sgot->output_offset + off);
3654 if (GOT_TLS_GD_P (tls_type))
3655 dr_type = R_386_TLS_DTPMOD32;
3656 else if (GOT_TLS_GDESC_P (tls_type))
3658 else if (tls_type == GOT_TLS_IE_POS)
3659 dr_type = R_386_TLS_TPOFF;
3661 dr_type = R_386_TLS_TPOFF32;
3663 if (dr_type == R_386_TLS_TPOFF && indx == 0)
3664 bfd_put_32 (output_bfd,
3665 relocation - elf_i386_dtpoff_base (info),
3666 htab->elf.sgot->contents + off);
3667 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
3668 bfd_put_32 (output_bfd,
3669 elf_i386_dtpoff_base (info) - relocation,
3670 htab->elf.sgot->contents + off);
3671 else if (dr_type != R_386_TLS_DESC)
3672 bfd_put_32 (output_bfd, 0,
3673 htab->elf.sgot->contents + off);
3674 outrel.r_info = ELF32_R_INFO (indx, dr_type);
3676 loc = sreloc->contents;
3677 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3678 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3679 <= sreloc->contents + sreloc->size);
3680 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3682 if (GOT_TLS_GD_P (tls_type))
3686 BFD_ASSERT (! unresolved_reloc);
3687 bfd_put_32 (output_bfd,
3688 relocation - elf_i386_dtpoff_base (info),
3689 htab->elf.sgot->contents + off + 4);
3693 bfd_put_32 (output_bfd, 0,
3694 htab->elf.sgot->contents + off + 4);
3695 outrel.r_info = ELF32_R_INFO (indx,
3696 R_386_TLS_DTPOFF32);
3697 outrel.r_offset += 4;
3698 sreloc->reloc_count++;
3699 loc += sizeof (Elf32_External_Rel);
3700 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3701 <= sreloc->contents + sreloc->size);
3702 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3705 else if (tls_type == GOT_TLS_IE_BOTH)
3707 bfd_put_32 (output_bfd,
3709 ? relocation - elf_i386_dtpoff_base (info)
3711 htab->elf.sgot->contents + off + 4);
3712 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3713 outrel.r_offset += 4;
3714 sreloc->reloc_count++;
3715 loc += sizeof (Elf32_External_Rel);
3716 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3723 local_got_offsets[r_symndx] |= 1;
3726 if (off >= (bfd_vma) -2
3727 && ! GOT_TLS_GDESC_P (tls_type))
3729 if (r_type == R_386_TLS_GOTDESC
3730 || r_type == R_386_TLS_DESC_CALL)
3732 relocation = htab->sgotplt_jump_table_size + offplt;
3733 unresolved_reloc = FALSE;
3735 else if (r_type == ELF32_R_TYPE (rel->r_info))
3737 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
3738 + htab->elf.sgotplt->output_offset;
3739 relocation = htab->elf.sgot->output_section->vma
3740 + htab->elf.sgot->output_offset + off - g_o_t;
3741 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
3742 && tls_type == GOT_TLS_IE_BOTH)
3744 if (r_type == R_386_TLS_IE)
3745 relocation += g_o_t;
3746 unresolved_reloc = FALSE;
3748 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3750 unsigned int val, type;
3753 /* GD->IE transition. */
3754 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3755 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3758 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3760 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
3762 roff = rel->r_offset - 3;
3766 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3768 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
3769 roff = rel->r_offset - 2;
3771 memcpy (contents + roff,
3772 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3773 contents[roff + 7] = 0x80 | (val & 7);
3774 /* If foo is used only with foo@gotntpoff(%reg) and
3775 foo@indntpoff, but not with foo@gottpoff(%reg), change
3776 subl $foo@gottpoff(%reg), %eax
3778 addl $foo@gotntpoff(%reg), %eax. */
3779 if (tls_type == GOT_TLS_IE_POS)
3780 contents[roff + 6] = 0x03;
3781 bfd_put_32 (output_bfd,
3782 htab->elf.sgot->output_section->vma
3783 + htab->elf.sgot->output_offset + off
3784 - htab->elf.sgotplt->output_section->vma
3785 - htab->elf.sgotplt->output_offset,
3786 contents + roff + 8);
3787 /* Skip R_386_PLT32. */
3791 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3793 /* GDesc -> IE transition.
3794 It's originally something like:
3795 leal x@tlsdesc(%ebx), %eax
3798 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
3800 movl x@gottpoff(%ebx), %eax # before negl %eax
3802 Registers other than %eax may be set up here. */
3806 /* First, make sure it's a leal adding ebx to a 32-bit
3807 offset into any register, although it's probably
3808 almost always going to be eax. */
3809 roff = rel->r_offset;
3811 /* Now modify the instruction as appropriate. */
3812 /* To turn a leal into a movl in the form we use it, it
3813 suffices to change the first byte from 0x8d to 0x8b.
3814 aoliva FIXME: should we decide to keep the leal, all
3815 we have to do is remove the statement below, and
3816 adjust the relaxation of R_386_TLS_DESC_CALL. */
3817 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3819 if (tls_type == GOT_TLS_IE_BOTH)
3822 bfd_put_32 (output_bfd,
3823 htab->elf.sgot->output_section->vma
3824 + htab->elf.sgot->output_offset + off
3825 - htab->elf.sgotplt->output_section->vma
3826 - htab->elf.sgotplt->output_offset,
3830 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3832 /* GDesc -> IE transition.
3840 depending on how we transformed the TLS_GOTDESC above.
3845 roff = rel->r_offset;
3847 /* Now modify the instruction as appropriate. */
3848 if (tls_type != GOT_TLS_IE_NEG)
3851 bfd_put_8 (output_bfd, 0x66, contents + roff);
3852 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3857 bfd_put_8 (output_bfd, 0xf7, contents + roff);
3858 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
3868 if (! elf_i386_tls_transition (info, input_bfd,
3869 input_section, contents,
3870 symtab_hdr, sym_hashes,
3871 &r_type, GOT_UNKNOWN, rel,
3872 relend, h, r_symndx))
3875 if (r_type != R_386_TLS_LDM)
3877 /* LD->LE transition:
3878 leal foo(%reg), %eax; call ___tls_get_addr.
3880 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
3881 BFD_ASSERT (r_type == R_386_TLS_LE_32);
3882 memcpy (contents + rel->r_offset - 2,
3883 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
3884 /* Skip R_386_PC32/R_386_PLT32. */
3889 if (htab->elf.sgot == NULL)
3892 off = htab->tls_ldm_got.offset;
3897 Elf_Internal_Rela outrel;
3900 if (htab->elf.srelgot == NULL)
3903 outrel.r_offset = (htab->elf.sgot->output_section->vma
3904 + htab->elf.sgot->output_offset + off);
3906 bfd_put_32 (output_bfd, 0,
3907 htab->elf.sgot->contents + off);
3908 bfd_put_32 (output_bfd, 0,
3909 htab->elf.sgot->contents + off + 4);
3910 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
3911 loc = htab->elf.srelgot->contents;
3912 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
3913 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3914 htab->tls_ldm_got.offset |= 1;
3916 relocation = htab->elf.sgot->output_section->vma
3917 + htab->elf.sgot->output_offset + off
3918 - htab->elf.sgotplt->output_section->vma
3919 - htab->elf.sgotplt->output_offset;
3920 unresolved_reloc = FALSE;
3923 case R_386_TLS_LDO_32:
3924 if (info->shared || (input_section->flags & SEC_CODE) == 0)
3925 relocation -= elf_i386_dtpoff_base (info);
3927 /* When converting LDO to LE, we must negate. */
3928 relocation = -elf_i386_tpoff (info, relocation);
3931 case R_386_TLS_LE_32:
3935 Elf_Internal_Rela outrel;
3940 outrel.r_offset = rel->r_offset
3941 + input_section->output_section->vma
3942 + input_section->output_offset;
3943 if (h != NULL && h->dynindx != -1)
3947 if (r_type == R_386_TLS_LE_32)
3948 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
3950 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3951 sreloc = elf_section_data (input_section)->sreloc;
3954 loc = sreloc->contents;
3955 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3956 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3959 else if (r_type == R_386_TLS_LE_32)
3960 relocation = elf_i386_dtpoff_base (info) - relocation;
3962 relocation -= elf_i386_dtpoff_base (info);
3964 else if (r_type == R_386_TLS_LE_32)
3965 relocation = elf_i386_tpoff (info, relocation);
3967 relocation = -elf_i386_tpoff (info, relocation);
3974 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3975 because such sections are not SEC_ALLOC and thus ld.so will
3976 not process them. */
3977 if (unresolved_reloc
3978 && !((input_section->flags & SEC_DEBUGGING) != 0
3981 (*_bfd_error_handler)
3982 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3985 (long) rel->r_offset,
3987 h->root.root.string);
3992 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3993 contents, rel->r_offset,
3996 if (r != bfd_reloc_ok)
4001 name = h->root.root.string;
4004 name = bfd_elf_string_from_elf_section (input_bfd,
4005 symtab_hdr->sh_link,
4010 name = bfd_section_name (input_bfd, sec);
4013 if (r == bfd_reloc_overflow)
4015 if (! ((*info->callbacks->reloc_overflow)
4016 (info, (h ? &h->root : NULL), name, howto->name,
4017 (bfd_vma) 0, input_bfd, input_section,
4023 (*_bfd_error_handler)
4024 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4025 input_bfd, input_section,
4026 (long) rel->r_offset, name, (int) r);
4035 /* Finish up dynamic symbol handling. We set the contents of various
4036 dynamic sections here. */
4039 elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4040 struct bfd_link_info *info,
4041 struct elf_link_hash_entry *h,
4042 Elf_Internal_Sym *sym)
4044 struct elf_i386_link_hash_table *htab;
4046 htab = elf_i386_hash_table (info);
4048 if (h->plt.offset != (bfd_vma) -1)
4052 Elf_Internal_Rela rel;
4054 asection *plt, *gotplt, *relplt;
4056 /* When building a static executable, use .iplt, .igot.plt and
4057 .rel.iplt sections for STT_GNU_IFUNC symbols. */
4058 if (htab->elf.splt != NULL)
4060 plt = htab->elf.splt;
4061 gotplt = htab->elf.sgotplt;
4062 relplt = htab->elf.srelplt;
4066 plt = htab->elf.iplt;
4067 gotplt = htab->elf.igotplt;
4068 relplt = htab->elf.irelplt;
4071 /* This symbol has an entry in the procedure linkage table. Set
4074 if ((h->dynindx == -1
4075 && !((h->forced_local || info->executable)
4077 && h->type == STT_GNU_IFUNC))
4083 /* Get the index in the procedure linkage table which
4084 corresponds to this symbol. This is the index of this symbol
4085 in all the symbols for which we are making plt entries. The
4086 first entry in the procedure linkage table is reserved.
4088 Get the offset into the .got table of the entry that
4089 corresponds to this function. Each .got entry is 4 bytes.
4090 The first three are reserved.
4092 For static executables, we don't reserve anything. */
4094 if (plt == htab->elf.splt)
4096 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
4097 got_offset = (plt_index + 3) * 4;
4101 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
4102 got_offset = plt_index * 4;
4105 /* Fill in the entry in the procedure linkage table. */
4108 memcpy (plt->contents + h->plt.offset, elf_i386_plt_entry,
4110 bfd_put_32 (output_bfd,
4111 (gotplt->output_section->vma
4112 + gotplt->output_offset
4114 plt->contents + h->plt.offset + 2);
4116 if (htab->is_vxworks)
4118 int s, k, reloc_index;
4120 /* Create the R_386_32 relocation referencing the GOT
4121 for this PLT entry. */
4123 /* S: Current slot number (zero-based). */
4124 s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
4125 /* K: Number of relocations for PLTResolve. */
4127 k = PLTRESOLVE_RELOCS_SHLIB;
4129 k = PLTRESOLVE_RELOCS;
4130 /* Skip the PLTresolve relocations, and the relocations for
4131 the other PLT slots. */
4132 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4133 loc = (htab->srelplt2->contents + reloc_index
4134 * sizeof (Elf32_External_Rel));
4136 rel.r_offset = (htab->elf.splt->output_section->vma
4137 + htab->elf.splt->output_offset
4138 + h->plt.offset + 2),
4139 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4140 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4142 /* Create the R_386_32 relocation referencing the beginning of
4143 the PLT for this GOT entry. */
4144 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4145 + htab->elf.sgotplt->output_offset
4147 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
4148 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4149 loc + sizeof (Elf32_External_Rel));
4154 memcpy (plt->contents + h->plt.offset, elf_i386_pic_plt_entry,
4156 bfd_put_32 (output_bfd, got_offset,
4157 plt->contents + h->plt.offset + 2);
4160 /* Don't fill PLT entry for static executables. */
4161 if (plt == htab->elf.splt)
4163 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4164 plt->contents + h->plt.offset + 7);
4165 bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
4166 plt->contents + h->plt.offset + 12);
4169 /* Fill in the entry in the global offset table. */
4170 bfd_put_32 (output_bfd,
4171 (plt->output_section->vma
4172 + plt->output_offset
4175 gotplt->contents + got_offset);
4177 /* Fill in the entry in the .rel.plt section. */
4178 rel.r_offset = (gotplt->output_section->vma
4179 + gotplt->output_offset
4181 if (h->dynindx == -1
4182 || ((info->executable
4183 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4185 && h->type == STT_GNU_IFUNC))
4187 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4188 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4189 in the .got.plt section. */
4190 bfd_put_32 (output_bfd,
4191 (h->root.u.def.value
4192 + h->root.u.def.section->output_section->vma
4193 + h->root.u.def.section->output_offset),
4194 gotplt->contents + got_offset);
4195 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
4198 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4199 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
4200 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4202 if (!h->def_regular)
4204 /* Mark the symbol as undefined, rather than as defined in
4205 the .plt section. Leave the value if there were any
4206 relocations where pointer equality matters (this is a clue
4207 for the dynamic linker, to make function pointer
4208 comparisons work between an application and shared
4209 library), otherwise set it to zero. If a function is only
4210 called from a binary, there is no need to slow down
4211 shared libraries because of that. */
4212 sym->st_shndx = SHN_UNDEF;
4213 if (!h->pointer_equality_needed)
4218 if (h->got.offset != (bfd_vma) -1
4219 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
4220 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
4222 Elf_Internal_Rela rel;
4225 /* This symbol has an entry in the global offset table. Set it
4228 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
4231 rel.r_offset = (htab->elf.sgot->output_section->vma
4232 + htab->elf.sgot->output_offset
4233 + (h->got.offset & ~(bfd_vma) 1));
4235 /* If this is a static link, or it is a -Bsymbolic link and the
4236 symbol is defined locally or was forced to be local because
4237 of a version file, we just want to emit a RELATIVE reloc.
4238 The entry in the global offset table will already have been
4239 initialized in the relocate_section function. */
4241 && h->type == STT_GNU_IFUNC)
4245 /* Generate R_386_GLOB_DAT. */
4250 if (!h->pointer_equality_needed)
4253 /* For non-shared object, we can't use .got.plt, which
4254 contains the real function addres if we need pointer
4255 equality. We load the GOT entry with the PLT entry. */
4256 asection *plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4257 bfd_put_32 (output_bfd,
4258 (plt->output_section->vma
4259 + plt->output_offset + h->plt.offset),
4260 htab->elf.sgot->contents + h->got.offset);
4264 else if (info->shared
4265 && SYMBOL_REFERENCES_LOCAL (info, h))
4267 BFD_ASSERT((h->got.offset & 1) != 0);
4268 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4272 BFD_ASSERT((h->got.offset & 1) == 0);
4274 bfd_put_32 (output_bfd, (bfd_vma) 0,
4275 htab->elf.sgot->contents + h->got.offset);
4276 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4279 loc = htab->elf.srelgot->contents;
4280 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
4281 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4286 Elf_Internal_Rela rel;
4289 /* This symbol needs a copy reloc. Set it up. */
4291 if (h->dynindx == -1
4292 || (h->root.type != bfd_link_hash_defined
4293 && h->root.type != bfd_link_hash_defweak)
4294 || htab->srelbss == NULL)
4297 rel.r_offset = (h->root.u.def.value
4298 + h->root.u.def.section->output_section->vma
4299 + h->root.u.def.section->output_offset);
4300 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
4301 loc = htab->srelbss->contents;
4302 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
4303 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4306 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
4307 be NULL for local symbols.
4309 On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it
4310 is relative to the ".got" section. */
4312 && (strcmp (h->root.root.string, "_DYNAMIC") == 0
4313 || (!htab->is_vxworks && h == htab->elf.hgot)))
4314 sym->st_shndx = SHN_ABS;
4319 /* Finish up local dynamic symbol handling. We set the contents of
4320 various dynamic sections here. */
4323 elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4325 struct elf_link_hash_entry *h
4326 = (struct elf_link_hash_entry *) *slot;
4327 struct bfd_link_info *info
4328 = (struct bfd_link_info *) inf;
4330 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4334 /* Used to decide how to sort relocs in an optimal manner for the
4335 dynamic linker, before writing them out. */
4337 static enum elf_reloc_type_class
4338 elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
4340 switch (ELF32_R_TYPE (rela->r_info))
4342 case R_386_RELATIVE:
4343 return reloc_class_relative;
4344 case R_386_JUMP_SLOT:
4345 return reloc_class_plt;
4347 return reloc_class_copy;
4349 return reloc_class_normal;
4353 /* Finish up the dynamic sections. */
4356 elf_i386_finish_dynamic_sections (bfd *output_bfd,
4357 struct bfd_link_info *info)
4359 struct elf_i386_link_hash_table *htab;
4363 htab = elf_i386_hash_table (info);
4364 dynobj = htab->elf.dynobj;
4365 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4367 if (htab->elf.dynamic_sections_created)
4369 Elf32_External_Dyn *dyncon, *dynconend;
4371 if (sdyn == NULL || htab->elf.sgot == NULL)
4374 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4375 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4376 for (; dyncon < dynconend; dyncon++)
4378 Elf_Internal_Dyn dyn;
4381 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4386 if (htab->is_vxworks
4387 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4392 s = htab->elf.sgotplt;
4393 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4397 s = htab->elf.srelplt;
4398 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4402 s = htab->elf.srelplt;
4403 dyn.d_un.d_val = s->size;
4407 /* My reading of the SVR4 ABI indicates that the
4408 procedure linkage table relocs (DT_JMPREL) should be
4409 included in the overall relocs (DT_REL). This is
4410 what Solaris does. However, UnixWare can not handle
4411 that case. Therefore, we override the DT_RELSZ entry
4412 here to make it not include the JMPREL relocs. */
4413 s = htab->elf.srelplt;
4416 dyn.d_un.d_val -= s->size;
4420 /* We may not be using the standard ELF linker script.
4421 If .rel.plt is the first .rel section, we adjust
4422 DT_REL to not include it. */
4423 s = htab->elf.srelplt;
4426 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4428 dyn.d_un.d_ptr += s->size;
4432 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4435 /* Fill in the first entry in the procedure linkage table. */
4436 if (htab->elf.splt && htab->elf.splt->size > 0)
4440 memcpy (htab->elf.splt->contents, elf_i386_pic_plt0_entry,
4441 sizeof (elf_i386_pic_plt0_entry));
4442 memset (htab->elf.splt->contents + sizeof (elf_i386_pic_plt0_entry),
4443 htab->plt0_pad_byte,
4444 PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry));
4448 memcpy (htab->elf.splt->contents, elf_i386_plt0_entry,
4449 sizeof(elf_i386_plt0_entry));
4450 memset (htab->elf.splt->contents + sizeof (elf_i386_plt0_entry),
4451 htab->plt0_pad_byte,
4452 PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry));
4453 bfd_put_32 (output_bfd,
4454 (htab->elf.sgotplt->output_section->vma
4455 + htab->elf.sgotplt->output_offset
4457 htab->elf.splt->contents + 2);
4458 bfd_put_32 (output_bfd,
4459 (htab->elf.sgotplt->output_section->vma
4460 + htab->elf.sgotplt->output_offset
4462 htab->elf.splt->contents + 8);
4464 if (htab->is_vxworks)
4466 Elf_Internal_Rela rel;
4468 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4469 On IA32 we use REL relocations so the addend goes in
4470 the PLT directly. */
4471 rel.r_offset = (htab->elf.splt->output_section->vma
4472 + htab->elf.splt->output_offset
4474 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4475 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4476 htab->srelplt2->contents);
4477 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
4478 rel.r_offset = (htab->elf.splt->output_section->vma
4479 + htab->elf.splt->output_offset
4481 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4482 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4483 htab->srelplt2->contents +
4484 sizeof (Elf32_External_Rel));
4488 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4489 really seem like the right value. */
4490 elf_section_data (htab->elf.splt->output_section)
4491 ->this_hdr.sh_entsize = 4;
4493 /* Correct the .rel.plt.unloaded relocations. */
4494 if (htab->is_vxworks && !info->shared)
4496 int num_plts = (htab->elf.splt->size / PLT_ENTRY_SIZE) - 1;
4499 p = htab->srelplt2->contents;
4501 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4503 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4505 for (; num_plts; num_plts--)
4507 Elf_Internal_Rela rel;
4508 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4509 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4510 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4511 p += sizeof (Elf32_External_Rel);
4513 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4514 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
4515 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4516 p += sizeof (Elf32_External_Rel);
4522 if (htab->elf.sgotplt)
4524 /* Fill in the first three entries in the global offset table. */
4525 if (htab->elf.sgotplt->size > 0)
4527 bfd_put_32 (output_bfd,
4529 : sdyn->output_section->vma + sdyn->output_offset),
4530 htab->elf.sgotplt->contents);
4531 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4532 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
4535 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
4538 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4539 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
4541 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4542 htab_traverse (htab->loc_hash_table,
4543 elf_i386_finish_local_dynamic_symbol,
4549 /* Return address for Ith PLT stub in section PLT, for relocation REL
4550 or (bfd_vma) -1 if it should not be included. */
4553 elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4554 const arelent *rel ATTRIBUTE_UNUSED)
4556 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
4559 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
4562 elf_i386_hash_symbol (struct elf_link_hash_entry *h)
4564 if (h->plt.offset != (bfd_vma) -1
4566 && !h->pointer_equality_needed)
4569 return _bfd_elf_hash_symbol (h);
4572 /* Hook called by the linker routine which adds symbols from an object
4576 elf_i386_add_symbol_hook (bfd * abfd ATTRIBUTE_UNUSED,
4577 struct bfd_link_info * info ATTRIBUTE_UNUSED,
4578 Elf_Internal_Sym * sym,
4579 const char ** namep ATTRIBUTE_UNUSED,
4580 flagword * flagsp ATTRIBUTE_UNUSED,
4581 asection ** secp ATTRIBUTE_UNUSED,
4582 bfd_vma * valp ATTRIBUTE_UNUSED)
4584 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
4585 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
4590 #define TARGET_LITTLE_SYM bfd_elf32_i386_vec
4591 #define TARGET_LITTLE_NAME "elf32-i386"
4592 #define ELF_ARCH bfd_arch_i386
4593 #define ELF_MACHINE_CODE EM_386
4594 #define ELF_MAXPAGESIZE 0x1000
4596 #define elf_backend_can_gc_sections 1
4597 #define elf_backend_can_refcount 1
4598 #define elf_backend_want_got_plt 1
4599 #define elf_backend_plt_readonly 1
4600 #define elf_backend_want_plt_sym 0
4601 #define elf_backend_got_header_size 12
4603 /* Support RELA for objdump of prelink objects. */
4604 #define elf_info_to_howto elf_i386_info_to_howto_rel
4605 #define elf_info_to_howto_rel elf_i386_info_to_howto_rel
4607 #define bfd_elf32_mkobject elf_i386_mkobject
4609 #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
4610 #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
4611 #define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
4612 #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
4613 #define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
4615 #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
4616 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4617 #define elf_backend_check_relocs elf_i386_check_relocs
4618 #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
4619 #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
4620 #define elf_backend_fake_sections elf_i386_fake_sections
4621 #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
4622 #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
4623 #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
4624 #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
4625 #define elf_backend_grok_prstatus elf_i386_grok_prstatus
4626 #define elf_backend_grok_psinfo elf_i386_grok_psinfo
4627 #define elf_backend_reloc_type_class elf_i386_reloc_type_class
4628 #define elf_backend_relocate_section elf_i386_relocate_section
4629 #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
4630 #define elf_backend_always_size_sections elf_i386_always_size_sections
4631 #define elf_backend_omit_section_dynsym \
4632 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4633 #define elf_backend_plt_sym_val elf_i386_plt_sym_val
4634 #define elf_backend_hash_symbol elf_i386_hash_symbol
4635 #define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
4636 #undef elf_backend_post_process_headers
4637 #define elf_backend_post_process_headers _bfd_elf_set_osabi
4639 #include "elf32-target.h"
4641 /* FreeBSD support. */
4643 #undef TARGET_LITTLE_SYM
4644 #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
4645 #undef TARGET_LITTLE_NAME
4646 #define TARGET_LITTLE_NAME "elf32-i386-freebsd"
4648 #define ELF_OSABI ELFOSABI_FREEBSD
4650 /* The kernel recognizes executables as valid only if they carry a
4651 "FreeBSD" label in the ELF header. So we put this label on all
4652 executables and (for simplicity) also all other object files. */
4655 elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
4657 _bfd_elf_set_osabi (abfd, info);
4659 #ifdef OLD_FREEBSD_ABI_LABEL
4660 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
4661 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
4665 #undef elf_backend_post_process_headers
4666 #define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
4668 #define elf32_bed elf32_i386_fbsd_bed
4670 #undef elf_backend_add_symbol_hook
4672 #include "elf32-target.h"
4674 /* VxWorks support. */
4676 #undef TARGET_LITTLE_SYM
4677 #define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
4678 #undef TARGET_LITTLE_NAME
4679 #define TARGET_LITTLE_NAME "elf32-i386-vxworks"
4682 /* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */
4684 static struct bfd_link_hash_table *
4685 elf_i386_vxworks_link_hash_table_create (bfd *abfd)
4687 struct bfd_link_hash_table *ret;
4688 struct elf_i386_link_hash_table *htab;
4690 ret = elf_i386_link_hash_table_create (abfd);
4693 htab = (struct elf_i386_link_hash_table *) ret;
4694 htab->is_vxworks = 1;
4695 htab->plt0_pad_byte = 0x90;
4702 #undef elf_backend_relocs_compatible
4703 #undef elf_backend_post_process_headers
4704 #undef bfd_elf32_bfd_link_hash_table_create
4705 #define bfd_elf32_bfd_link_hash_table_create \
4706 elf_i386_vxworks_link_hash_table_create
4707 #undef elf_backend_add_symbol_hook
4708 #define elf_backend_add_symbol_hook \
4709 elf_vxworks_add_symbol_hook
4710 #undef elf_backend_link_output_symbol_hook
4711 #define elf_backend_link_output_symbol_hook \
4712 elf_vxworks_link_output_symbol_hook
4713 #undef elf_backend_emit_relocs
4714 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
4715 #undef elf_backend_final_write_processing
4716 #define elf_backend_final_write_processing \
4717 elf_vxworks_final_write_processing
4719 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
4721 #undef elf_backend_want_plt_sym
4722 #define elf_backend_want_plt_sym 1
4725 #define elf32_bed elf32_i386_vxworks_bed
4727 #include "elf32-target.h"