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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 /include/libc-symbols.h | |
| 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 'include/libc-symbols.h')
| -rw-r--r-- | include/libc-symbols.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/libc-symbols.h b/include/libc-symbols.h index e0d4dc3170..872626274b 100644 --- a/include/libc-symbols.h +++ b/include/libc-symbols.h @@ -507,6 +507,7 @@ for linking") #else # ifndef __ASSEMBLER__ # if !defined SHARED && IS_IN (libc) && !defined LIBC_NONSHARED \ + && (!defined PIC || !defined NO_HIDDEN_EXTERN_FUNC_IN_PIE) \ && !defined NO_HIDDEN # define __hidden_proto_hiddenattr(attrs...) \ __attribute__ ((visibility ("hidden"), ##attrs)) |