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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-10-04 17:18:23 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-10-04 17:18:42 -0700 |
| commit | ee417882e07277b2a36e7e61e6ef7edd96415b3f (patch) | |
| tree | bdd0f60f81b8a631c63275ea083308ad4127f404 /config.h.in | |
| parent | a67029ff12319300458a502be1d12aa2065c48da (diff) | |
Don't use hidden visibility in libc.a with PIE on i386
On i386, when multi-arch is enabled, all external functions must be
called via PIC PLT in PIE, which requires setting up EBX register,
since they may be IFUNC functions.
* config.h.in (NO_HIDDEN_EXTERN_FUNC_IN_PIE): New.
* include/libc-symbols.h (__hidden_proto_hiddenattr): Add check
for PIC and NO_HIDDEN_EXTERN_FUNC_IN_PIE.
* sysdeps/i386/configure.ac (NO_HIDDEN_EXTERN_FUNC_IN_PIE): New
AC_DEFINE if multi-arch is enabled.
* sysdeps/i386/configure: Regenerated.
Diffstat (limited to 'config.h.in')
| -rw-r--r-- | config.h.in | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/config.h.in b/config.h.in index 0d38476fa4..c140ff3ecb 100644 --- a/config.h.in +++ b/config.h.in @@ -86,6 +86,10 @@ #undef PI_STATIC_AND_HIDDEN /* Define this to disable the 'hidden_proto' et al macros in + include/libc-symbols.h that avoid PLT slots in PIE. */ +#undef NO_HIDDEN_EXTERN_FUNC_IN_PIE + +/* Define this to disable the 'hidden_proto' et al macros in include/libc-symbols.h that avoid PLT slots in the shared objects. */ #undef NO_HIDDEN |