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Handle IFUNC symbols in dlsym.

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Andreas Schwab 2009-10-21 06:23:42 -07:00 committed by Ulrich Drepper
parent b7805d0ba8
commit bc5e846218
2 changed files with 9 additions and 0 deletions
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ChangeLog
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@ -1,3 +1,7 @@
2009-10-21 Andreas Schwab <schwab@redhat.com>
* elf/dl-sym.c (do_sym): Resolve STT_GNU_IFUNC symbols.
2009-10-19 Andreas Schwab <schwab@redhat.com> 2009-10-19 Andreas Schwab <schwab@redhat.com>
* include/math.h: Add hidden protos for __exp/__expf/__expl. * include/math.h: Add hidden protos for __exp/__expf/__expl.

5
elf/dl-sym.c
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@ -191,6 +191,11 @@ RTLD_NEXT used in code not dynamically loaded"));
#endif #endif
value = DL_SYMBOL_ADDRESS (result, ref); value = DL_SYMBOL_ADDRESS (result, ref);
/* Resolve indirect function address. */
if (__builtin_expect (ELFW(ST_TYPE) (ref->st_info) == STT_GNU_IFUNC, 0))
value
= ((DL_FIXUP_VALUE_TYPE (*) (void)) DL_FIXUP_VALUE_ADDR (value)) ();
#ifdef SHARED #ifdef SHARED
/* Auditing checkpoint: we have a new binding. Provide the /* Auditing checkpoint: we have a new binding. Provide the
auditing libraries the possibility to change the value and auditing libraries the possibility to change the value and