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| author | Andreas Schwab <schwab@redhat.com> | 2009-10-21 06:23:42 -0700 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2009-10-21 06:23:42 -0700 |
| commit | bc5e8462188bdd9919e804fbba44e4b983b7724a (patch) | |
| tree | a1c40bc8897a1186452fd80b91f0b3cf7561cb7e | |
| parent | b7805d0ba8948fcf5e406bf52530d9aba99f5954 (diff) | |
| download | glibc-bc5e8462188bdd9919e804fbba44e4b983b7724a.tar.gz glibc-bc5e8462188bdd9919e804fbba44e4b983b7724a.tar.xz glibc-bc5e8462188bdd9919e804fbba44e4b983b7724a.zip | |
Handle IFUNC symbols in dlsym.
| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | elf/dl-sym.c | 5 |
2 files changed, 9 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 2857d88177..ccbb625461 100644 --- a/ChangeLog +++ b/ChangeLog @@ -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> * include/math.h: Add hidden protos for __exp/__expf/__expl. diff --git a/elf/dl-sym.c b/elf/dl-sym.c index 740bb9a892..459729f0f2 100644 --- a/elf/dl-sym.c +++ b/elf/dl-sym.c @@ -191,6 +191,11 @@ RTLD_NEXT used in code not dynamically loaded")); #endif 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 /* Auditing checkpoint: we have a new binding. Provide the auditing libraries the possibility to change the value and |