1 /* Machine-dependent ELF dynamic relocation inline functions. i386 version.
2 Copyright (C) 1995-2017 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
22 #define ELF_MACHINE_NAME "i386"
24 #include <sys/param.h>
27 #include <dl-tlsdesc.h>
28 #include <cpu-features.c>
30 /* Return nonzero iff ELF header is compatible with the running host. */
31 static inline int __attribute__ ((unused
))
32 elf_machine_matches_host (const Elf32_Ehdr
*ehdr
)
34 return ehdr
->e_machine
== EM_386
;
38 /* Return the link-time address of _DYNAMIC. Conveniently, this is the
39 first element of the GOT, a special entry that is never relocated. */
40 static inline Elf32_Addr
__attribute__ ((unused
, const))
41 elf_machine_dynamic (void)
43 /* This produces a GOTOFF reloc that resolves to zero at link time, so in
44 fact just loads from the GOT register directly. By doing it without
45 an asm we can let the compiler choose any register. */
46 extern const Elf32_Addr _GLOBAL_OFFSET_TABLE_
[] attribute_hidden
;
47 return _GLOBAL_OFFSET_TABLE_
[0];
50 /* Return the run-time load address of the shared object. */
51 static inline Elf32_Addr
__attribute__ ((unused
))
52 elf_machine_load_address (void)
54 /* Compute the difference between the runtime address of _DYNAMIC as seen
55 by a GOTOFF reference, and the link-time address found in the special
56 unrelocated first GOT entry. */
57 extern Elf32_Dyn bygotoff
[] asm ("_DYNAMIC") attribute_hidden
;
58 return (Elf32_Addr
) &bygotoff
- elf_machine_dynamic ();
61 /* Set up the loaded object described by L so its unrelocated PLT
62 entries will jump to the on-demand fixup code in dl-runtime.c. */
64 static inline int __attribute__ ((unused
, always_inline
))
65 elf_machine_runtime_setup (struct link_map
*l
, int lazy
, int profile
)
68 extern void _dl_runtime_resolve (Elf32_Word
) attribute_hidden
;
69 extern void _dl_runtime_profile (Elf32_Word
) attribute_hidden
;
71 if (l
->l_info
[DT_JMPREL
] && lazy
)
73 /* The GOT entries for functions in the PLT have not yet been filled
74 in. Their initial contents will arrange when called to push an
75 offset into the .rel.plt section, push _GLOBAL_OFFSET_TABLE_[1],
76 and then jump to _GLOBAL_OFFSET_TABLE[2]. */
77 got
= (Elf32_Addr
*) D_PTR (l
, l_info
[DT_PLTGOT
]);
78 /* If a library is prelinked but we have to relocate anyway,
79 we have to be able to undo the prelinking of .got.plt.
80 The prelinker saved us here address of .plt + 0x16. */
83 l
->l_mach
.plt
= got
[1] + l
->l_addr
;
84 l
->l_mach
.gotplt
= (Elf32_Addr
) &got
[3];
86 got
[1] = (Elf32_Addr
) l
; /* Identify this shared object. */
88 /* The got[2] entry contains the address of a function which gets
89 called to get the address of a so far unresolved function and
90 jump to it. The profiling extension of the dynamic linker allows
91 to intercept the calls to collect information. In this case we
92 don't store the address in the GOT so that all future calls also
93 end in this function. */
94 if (__glibc_unlikely (profile
))
96 got
[2] = (Elf32_Addr
) &_dl_runtime_profile
;
98 if (GLRO(dl_profile
) != NULL
99 && _dl_name_match_p (GLRO(dl_profile
), l
))
100 /* This is the object we are looking for. Say that we really
101 want profiling and the timers are started. */
102 GL(dl_profile_map
) = l
;
105 /* This function will get called to fix up the GOT entry indicated by
106 the offset on the stack, and then jump to the resolved address. */
107 got
[2] = (Elf32_Addr
) &_dl_runtime_resolve
;
116 /* We add a declaration of this function here so that in dl-runtime.c
117 the ELF_MACHINE_RUNTIME_TRAMPOLINE macro really can pass the parameters
120 We cannot use this scheme for profiling because the _mcount call
121 destroys the passed register information. */
122 #define ARCH_FIXUP_ATTRIBUTE __attribute__ ((regparm (3), stdcall, unused))
124 extern ElfW(Addr
) _dl_fixup (struct link_map
*l
,
125 ElfW(Word
) reloc_offset
)
126 ARCH_FIXUP_ATTRIBUTE
;
127 extern ElfW(Addr
) _dl_profile_fixup (struct link_map
*l
,
128 ElfW(Word
) reloc_offset
,
129 ElfW(Addr
) retaddr
, void *regs
,
130 long int *framesizep
)
131 ARCH_FIXUP_ATTRIBUTE
;
136 /* Mask identifying addresses reserved for the user program,
137 where the dynamic linker should not map anything. */
138 #define ELF_MACHINE_USER_ADDRESS_MASK 0xf8000000UL
140 /* Initial entry point code for the dynamic linker.
141 The C function `_dl_start' is the real entry point;
142 its return value is the user program's entry point. */
144 #define RTLD_START asm ("\n\
147 0: movl (%esp), %ebx\n\
151 .globl _dl_start_user\n\
153 # Note that _dl_start gets the parameter in %eax.\n\
157 # Save the user entry point address in %edi.\n\
159 # Point %ebx at the GOT.\n\
161 addl $_GLOBAL_OFFSET_TABLE_, %ebx\n\
162 # See if we were run as a command with the executable file\n\
163 # name as an extra leading argument.\n\
164 movl _dl_skip_args@GOTOFF(%ebx), %eax\n\
165 # Pop the original argument count.\n\
167 # Adjust the stack pointer to skip _dl_skip_args words.\n\
168 leal (%esp,%eax,4), %esp\n\
169 # Subtract _dl_skip_args from argc.\n\
171 # Push argc back on the stack.\n\
173 # The special initializer gets called with the stack just\n\
174 # as the application's entry point will see it; it can\n\
175 # switch stacks if it moves these contents over.\n\
176 " RTLD_START_SPECIAL_INIT "\n\
177 # Load the parameters again.\n\
178 # (eax, edx, ecx, *--esp) = (_dl_loaded, argc, argv, envp)\n\
179 movl _rtld_local@GOTOFF(%ebx), %eax\n\
180 leal 8(%esp,%edx,4), %esi\n\
181 leal 4(%esp), %ecx\n\
183 # Make sure _dl_init is run with 16 byte aligned stack.\n\
189 # Clear %ebp, so that even constructors have terminated backchain.\n\
191 # Call the function to run the initializers.\n\
193 # Pass our finalizer function to the user in %edx, as per ELF ABI.\n\
194 leal _dl_fini@GOTOFF(%ebx), %edx\n\
195 # Restore %esp _start expects.\n\
197 # Jump to the user's entry point.\n\
202 #ifndef RTLD_START_SPECIAL_INIT
203 # define RTLD_START_SPECIAL_INIT /* nothing */
206 /* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry or
207 TLS variable, so undefined references should not be allowed to
209 ELF_RTYPE_CLASS_COPY iff TYPE should not be allowed to resolve to one
210 of the main executable's symbols, as for a COPY reloc.
211 ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA iff TYPE describes relocation may
212 against protected data whose address be external due to copy relocation.
214 # define elf_machine_type_class(type) \
215 ((((type) == R_386_JMP_SLOT || (type) == R_386_TLS_DTPMOD32 \
216 || (type) == R_386_TLS_DTPOFF32 || (type) == R_386_TLS_TPOFF32 \
217 || (type) == R_386_TLS_TPOFF || (type) == R_386_TLS_DESC) \
218 * ELF_RTYPE_CLASS_PLT) \
219 | (((type) == R_386_COPY) * ELF_RTYPE_CLASS_COPY) \
220 | (((type) == R_386_GLOB_DAT) * ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA))
222 /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */
223 #define ELF_MACHINE_JMP_SLOT R_386_JMP_SLOT
225 /* The i386 never uses Elf32_Rela relocations for the dynamic linker.
226 Prelinked libraries may use Elf32_Rela though. */
227 #define ELF_MACHINE_PLT_REL 1
229 /* We define an initialization functions. This is called very early in
231 #define DL_PLATFORM_INIT dl_platform_init ()
233 static inline void __attribute__ ((unused
))
234 dl_platform_init (void)
236 if (GLRO(dl_platform
) != NULL
&& *GLRO(dl_platform
) == '\0')
237 /* Avoid an empty string which would disturb us. */
238 GLRO(dl_platform
) = NULL
;
241 /* init_cpu_features has been called early from __libc_start_main in
242 static executable. */
243 init_cpu_features (&GLRO(dl_x86_cpu_features
));
247 static inline Elf32_Addr
248 elf_machine_fixup_plt (struct link_map
*map
, lookup_t t
,
249 const Elf32_Rel
*reloc
,
250 Elf32_Addr
*reloc_addr
, Elf32_Addr value
)
252 return *reloc_addr
= value
;
255 /* Return the final value of a plt relocation. */
256 static inline Elf32_Addr
257 elf_machine_plt_value (struct link_map
*map
, const Elf32_Rel
*reloc
,
264 /* Names of the architecture-specific auditing callback functions. */
265 #define ARCH_LA_PLTENTER i86_gnu_pltenter
266 #define ARCH_LA_PLTEXIT i86_gnu_pltexit
268 #endif /* !dl_machine_h */
270 /* The i386 never uses Elf32_Rela relocations for the dynamic linker.
271 Prelinked libraries may use Elf32_Rela though. */
272 #define ELF_MACHINE_NO_RELA defined RTLD_BOOTSTRAP
273 #define ELF_MACHINE_NO_REL 0
277 /* Perform the relocation specified by RELOC and SYM (which is fully resolved).
278 MAP is the object containing the reloc. */
281 __attribute ((always_inline
))
282 elf_machine_rel (struct link_map
*map
, const Elf32_Rel
*reloc
,
283 const Elf32_Sym
*sym
, const struct r_found_version
*version
,
284 void *const reloc_addr_arg
, int skip_ifunc
)
286 Elf32_Addr
*const reloc_addr
= reloc_addr_arg
;
287 const unsigned int r_type
= ELF32_R_TYPE (reloc
->r_info
);
289 # if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC
290 if (__glibc_unlikely (r_type
== R_386_RELATIVE
))
292 # if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
293 /* This is defined in rtld.c, but nowhere in the static libc.a;
294 make the reference weak so static programs can still link.
295 This declaration cannot be done when compiling rtld.c
296 (i.e. #ifdef RTLD_BOOTSTRAP) because rtld.c contains the
297 common defn for _dl_rtld_map, which is incompatible with a
298 weak decl in the same file. */
300 weak_extern (_dl_rtld_map
);
302 if (map
!= &GL(dl_rtld_map
)) /* Already done in rtld itself. */
304 *reloc_addr
+= map
->l_addr
;
306 # ifndef RTLD_BOOTSTRAP
307 else if (__glibc_unlikely (r_type
== R_386_NONE
))
311 # endif /* !RTLD_BOOTSTRAP and have no -z combreloc */
313 # ifndef RTLD_BOOTSTRAP
314 const Elf32_Sym
*const refsym
= sym
;
316 struct link_map
*sym_map
= RESOLVE_MAP (&sym
, version
, r_type
);
317 Elf32_Addr value
= sym_map
== NULL
? 0 : sym_map
->l_addr
+ sym
->st_value
;
320 && __builtin_expect (ELFW(ST_TYPE
) (sym
->st_info
) == STT_GNU_IFUNC
,
322 && __builtin_expect (sym
->st_shndx
!= SHN_UNDEF
, 1)
323 && __builtin_expect (!skip_ifunc
, 1))
325 # ifndef RTLD_BOOTSTRAP
327 && sym_map
->l_type
!= lt_executable
328 && !sym_map
->l_relocated
)
331 = (const char *) D_PTR (map
, l_info
[DT_STRTAB
]);
333 %s: Relink `%s' with `%s' for IFUNC symbol `%s'\n",
334 RTLD_PROGNAME
, map
->l_name
,
336 strtab
+ refsym
->st_name
);
339 value
= ((Elf32_Addr (*) (void)) value
) ();
344 # ifndef RTLD_BOOTSTRAP
346 /* Set to symbol size plus addend. */
347 *reloc_addr
+= sym
->st_size
;
355 case R_386_TLS_DTPMOD32
:
356 # ifdef RTLD_BOOTSTRAP
357 /* During startup the dynamic linker is always the module
359 XXX If this relocation is necessary move before RESOLVE
363 /* Get the information from the link map returned by the
366 *reloc_addr
= sym_map
->l_tls_modid
;
369 case R_386_TLS_DTPOFF32
:
370 # ifndef RTLD_BOOTSTRAP
371 /* During relocation all TLS symbols are defined and used.
372 Therefore the offset is already correct. */
374 *reloc_addr
= sym
->st_value
;
379 struct tlsdesc
volatile *td
=
380 (struct tlsdesc
volatile *)reloc_addr
;
382 # ifndef RTLD_BOOTSTRAP
384 td
->entry
= _dl_tlsdesc_undefweak
;
388 # ifndef RTLD_BOOTSTRAP
390 CHECK_STATIC_TLS (map
, sym_map
);
392 if (!TRY_STATIC_TLS (map
, sym_map
))
394 td
->arg
= _dl_make_tlsdesc_dynamic
395 (sym_map
, sym
->st_value
+ (ElfW(Word
))td
->arg
);
396 td
->entry
= _dl_tlsdesc_dynamic
;
402 td
->arg
= (void*)(sym
->st_value
- sym_map
->l_tls_offset
403 + (ElfW(Word
))td
->arg
);
404 td
->entry
= _dl_tlsdesc_return
;
409 case R_386_TLS_TPOFF32
:
410 /* The offset is positive, backward from the thread pointer. */
411 # ifdef RTLD_BOOTSTRAP
412 *reloc_addr
+= map
->l_tls_offset
- sym
->st_value
;
414 /* We know the offset of object the symbol is contained in.
415 It is a positive value which will be subtracted from the
416 thread pointer. To get the variable position in the TLS
417 block we subtract the offset from that of the TLS block. */
420 CHECK_STATIC_TLS (map
, sym_map
);
421 *reloc_addr
+= sym_map
->l_tls_offset
- sym
->st_value
;
425 case R_386_TLS_TPOFF
:
426 /* The offset is negative, forward from the thread pointer. */
427 # ifdef RTLD_BOOTSTRAP
428 *reloc_addr
+= sym
->st_value
- map
->l_tls_offset
;
430 /* We know the offset of object the symbol is contained in.
431 It is a negative value which will be added to the
435 CHECK_STATIC_TLS (map
, sym_map
);
436 *reloc_addr
+= sym
->st_value
- sym_map
->l_tls_offset
;
441 # ifndef RTLD_BOOTSTRAP
443 *reloc_addr
+= value
;
446 *reloc_addr
+= (value
- (Elf32_Addr
) reloc_addr
);
450 /* This can happen in trace mode if an object could not be
453 if (__builtin_expect (sym
->st_size
> refsym
->st_size
, 0)
454 || (__builtin_expect (sym
->st_size
< refsym
->st_size
, 0)
455 && GLRO(dl_verbose
)))
459 strtab
= (const char *) D_PTR (map
, l_info
[DT_STRTAB
]);
461 %s: Symbol `%s' has different size in shared object, consider re-linking\n",
462 RTLD_PROGNAME
, strtab
+ refsym
->st_name
);
464 memcpy (reloc_addr_arg
, (void *) value
,
465 MIN (sym
->st_size
, refsym
->st_size
));
467 case R_386_IRELATIVE
:
468 value
= map
->l_addr
+ *reloc_addr
;
469 value
= ((Elf32_Addr (*) (void)) value
) ();
473 _dl_reloc_bad_type (map
, r_type
, 0);
475 # endif /* !RTLD_BOOTSTRAP */
480 # ifndef RTLD_BOOTSTRAP
482 __attribute__ ((always_inline
))
483 elf_machine_rela (struct link_map
*map
, const Elf32_Rela
*reloc
,
484 const Elf32_Sym
*sym
, const struct r_found_version
*version
,
485 void *const reloc_addr_arg
, int skip_ifunc
)
487 Elf32_Addr
*const reloc_addr
= reloc_addr_arg
;
488 const unsigned int r_type
= ELF32_R_TYPE (reloc
->r_info
);
490 if (ELF32_R_TYPE (reloc
->r_info
) == R_386_RELATIVE
)
491 *reloc_addr
= map
->l_addr
+ reloc
->r_addend
;
492 else if (r_type
!= R_386_NONE
)
494 # ifndef RESOLVE_CONFLICT_FIND_MAP
495 const Elf32_Sym
*const refsym
= sym
;
497 struct link_map
*sym_map
= RESOLVE_MAP (&sym
, version
, r_type
);
498 Elf32_Addr value
= sym
== NULL
? 0 : sym_map
->l_addr
+ sym
->st_value
;
501 && __builtin_expect (sym
->st_shndx
!= SHN_UNDEF
, 1)
502 && __builtin_expect (ELFW(ST_TYPE
) (sym
->st_info
) == STT_GNU_IFUNC
, 0)
503 && __builtin_expect (!skip_ifunc
, 1))
504 value
= ((Elf32_Addr (*) (void)) value
) ();
506 switch (ELF32_R_TYPE (reloc
->r_info
))
509 /* Set to symbol size plus addend. */
510 value
= sym
->st_size
;
514 *reloc_addr
= value
+ reloc
->r_addend
;
516 # ifndef RESOLVE_CONFLICT_FIND_MAP
517 /* Not needed for dl-conflict.c. */
519 *reloc_addr
= (value
+ reloc
->r_addend
- (Elf32_Addr
) reloc_addr
);
522 case R_386_TLS_DTPMOD32
:
523 /* Get the information from the link map returned by the
526 *reloc_addr
= sym_map
->l_tls_modid
;
528 case R_386_TLS_DTPOFF32
:
529 /* During relocation all TLS symbols are defined and used.
530 Therefore the offset is already correct. */
531 *reloc_addr
= (sym
== NULL
? 0 : sym
->st_value
) + reloc
->r_addend
;
535 struct tlsdesc
volatile *td
=
536 (struct tlsdesc
volatile *)reloc_addr
;
538 # ifndef RTLD_BOOTSTRAP
541 td
->arg
= (void*)reloc
->r_addend
;
542 td
->entry
= _dl_tlsdesc_undefweak
;
547 # ifndef RTLD_BOOTSTRAP
549 CHECK_STATIC_TLS (map
, sym_map
);
551 if (!TRY_STATIC_TLS (map
, sym_map
))
553 td
->arg
= _dl_make_tlsdesc_dynamic
554 (sym_map
, sym
->st_value
+ reloc
->r_addend
);
555 td
->entry
= _dl_tlsdesc_dynamic
;
561 td
->arg
= (void*)(sym
->st_value
- sym_map
->l_tls_offset
563 td
->entry
= _dl_tlsdesc_return
;
568 case R_386_TLS_TPOFF32
:
569 /* The offset is positive, backward from the thread pointer. */
570 /* We know the offset of object the symbol is contained in.
571 It is a positive value which will be subtracted from the
572 thread pointer. To get the variable position in the TLS
573 block we subtract the offset from that of the TLS block. */
576 CHECK_STATIC_TLS (map
, sym_map
);
577 *reloc_addr
= sym_map
->l_tls_offset
- sym
->st_value
581 case R_386_TLS_TPOFF
:
582 /* The offset is negative, forward from the thread pointer. */
583 /* We know the offset of object the symbol is contained in.
584 It is a negative value which will be added to the
588 CHECK_STATIC_TLS (map
, sym_map
);
589 *reloc_addr
= sym
->st_value
- sym_map
->l_tls_offset
595 /* This can happen in trace mode if an object could not be
598 if (__builtin_expect (sym
->st_size
> refsym
->st_size
, 0)
599 || (__builtin_expect (sym
->st_size
< refsym
->st_size
, 0)
600 && GLRO(dl_verbose
)))
604 strtab
= (const char *) D_PTR (map
, l_info
[DT_STRTAB
]);
606 %s: Symbol `%s' has different size in shared object, consider re-linking\n",
607 RTLD_PROGNAME
, strtab
+ refsym
->st_name
);
609 memcpy (reloc_addr_arg
, (void *) value
,
610 MIN (sym
->st_size
, refsym
->st_size
));
612 # endif /* !RESOLVE_CONFLICT_FIND_MAP */
613 case R_386_IRELATIVE
:
614 value
= map
->l_addr
+ reloc
->r_addend
;
615 value
= ((Elf32_Addr (*) (void)) value
) ();
619 /* We add these checks in the version to relocate ld.so only
620 if we are still debugging. */
621 _dl_reloc_bad_type (map
, r_type
, 0);
626 # endif /* !RTLD_BOOTSTRAP */
629 __attribute ((always_inline
))
630 elf_machine_rel_relative (Elf32_Addr l_addr
, const Elf32_Rel
*reloc
,
631 void *const reloc_addr_arg
)
633 Elf32_Addr
*const reloc_addr
= reloc_addr_arg
;
634 assert (ELF32_R_TYPE (reloc
->r_info
) == R_386_RELATIVE
);
635 *reloc_addr
+= l_addr
;
638 # ifndef RTLD_BOOTSTRAP
640 __attribute__ ((always_inline
))
641 elf_machine_rela_relative (Elf32_Addr l_addr
, const Elf32_Rela
*reloc
,
642 void *const reloc_addr_arg
)
644 Elf32_Addr
*const reloc_addr
= reloc_addr_arg
;
645 *reloc_addr
= l_addr
+ reloc
->r_addend
;
647 # endif /* !RTLD_BOOTSTRAP */
650 __attribute__ ((always_inline
))
651 elf_machine_lazy_rel (struct link_map
*map
,
652 Elf32_Addr l_addr
, const Elf32_Rel
*reloc
,
655 Elf32_Addr
*const reloc_addr
= (void *) (l_addr
+ reloc
->r_offset
);
656 const unsigned int r_type
= ELF32_R_TYPE (reloc
->r_info
);
657 /* Check for unexpected PLT reloc type. */
658 if (__glibc_likely (r_type
== R_386_JMP_SLOT
))
660 if (__builtin_expect (map
->l_mach
.plt
, 0) == 0)
661 *reloc_addr
+= l_addr
;
663 *reloc_addr
= (map
->l_mach
.plt
664 + (((Elf32_Addr
) reloc_addr
) - map
->l_mach
.gotplt
) * 4);
666 else if (__glibc_likely (r_type
== R_386_TLS_DESC
))
668 struct tlsdesc
volatile * __attribute__((__unused__
)) td
=
669 (struct tlsdesc
volatile *)reloc_addr
;
671 /* Handle relocations that reference the local *ABS* in a simple
672 way, so as to preserve a potential addend. */
673 if (ELF32_R_SYM (reloc
->r_info
) == 0)
674 td
->entry
= _dl_tlsdesc_resolve_abs_plus_addend
;
675 /* Given a known-zero addend, we can store a pointer to the
676 reloc in the arg position. */
677 else if (td
->arg
== 0)
679 td
->arg
= (void*)reloc
;
680 td
->entry
= _dl_tlsdesc_resolve_rel
;
684 /* We could handle non-*ABS* relocations with non-zero addends
685 by allocating dynamically an arg to hold a pointer to the
686 reloc, but that sounds pointless. */
687 const Elf32_Rel
*const r
= reloc
;
688 /* The code below was borrowed from elf_dynamic_do_rel(). */
689 const ElfW(Sym
) *const symtab
=
690 (const void *) D_PTR (map
, l_info
[DT_SYMTAB
]);
692 # ifdef RTLD_BOOTSTRAP
693 /* The dynamic linker always uses versioning. */
694 assert (map
->l_info
[VERSYMIDX (DT_VERSYM
)] != NULL
);
696 if (map
->l_info
[VERSYMIDX (DT_VERSYM
)])
699 const ElfW(Half
) *const version
=
700 (const void *) D_PTR (map
, l_info
[VERSYMIDX (DT_VERSYM
)]);
701 ElfW(Half
) ndx
= version
[ELFW(R_SYM
) (r
->r_info
)] & 0x7fff;
702 elf_machine_rel (map
, r
, &symtab
[ELFW(R_SYM
) (r
->r_info
)],
703 &map
->l_versions
[ndx
],
704 (void *) (l_addr
+ r
->r_offset
), skip_ifunc
);
706 # ifndef RTLD_BOOTSTRAP
708 elf_machine_rel (map
, r
, &symtab
[ELFW(R_SYM
) (r
->r_info
)], NULL
,
709 (void *) (l_addr
+ r
->r_offset
), skip_ifunc
);
713 else if (__glibc_unlikely (r_type
== R_386_IRELATIVE
))
715 Elf32_Addr value
= map
->l_addr
+ *reloc_addr
;
716 if (__glibc_likely (!skip_ifunc
))
717 value
= ((Elf32_Addr (*) (void)) value
) ();
721 _dl_reloc_bad_type (map
, r_type
, 1);
724 # ifndef RTLD_BOOTSTRAP
727 __attribute__ ((always_inline
))
728 elf_machine_lazy_rela (struct link_map
*map
,
729 Elf32_Addr l_addr
, const Elf32_Rela
*reloc
,
732 Elf32_Addr
*const reloc_addr
= (void *) (l_addr
+ reloc
->r_offset
);
733 const unsigned int r_type
= ELF32_R_TYPE (reloc
->r_info
);
734 if (__glibc_likely (r_type
== R_386_JMP_SLOT
))
736 else if (__glibc_likely (r_type
== R_386_TLS_DESC
))
738 struct tlsdesc
volatile * __attribute__((__unused__
)) td
=
739 (struct tlsdesc
volatile *)reloc_addr
;
741 td
->arg
= (void*)reloc
;
742 td
->entry
= _dl_tlsdesc_resolve_rela
;
744 else if (__glibc_unlikely (r_type
== R_386_IRELATIVE
))
746 Elf32_Addr value
= map
->l_addr
+ reloc
->r_addend
;
747 if (__glibc_likely (!skip_ifunc
))
748 value
= ((Elf32_Addr (*) (void)) value
) ();
752 _dl_reloc_bad_type (map
, r_type
, 1);
755 # endif /* !RTLD_BOOTSTRAP */
757 #endif /* RESOLVE_MAP */