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| author | H.J. Lu <hjl.tools@gmail.com> | 2016-11-28 09:44:49 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2016-11-28 09:45:07 -0800 |
| commit | c9070e6305c08365c5f8b604bdca39c699d70cfa (patch) | |
| tree | ca1d9aec72ad11a8530e4fcef99d6a7deb576cda | |
| parent | 389d1f1b232b3d6b9d73ee2c50e543ace6675621 (diff) | |
| download | glibc-c9070e6305c08365c5f8b604bdca39c699d70cfa.zip glibc-c9070e6305c08365c5f8b604bdca39c699d70cfa.tar.gz glibc-c9070e6305c08365c5f8b604bdca39c699d70cfa.tar.bz2 | |
X86_64: Don't use PLT nor GOT in static archives [BZ #20750]
There is no need to use PLT nor GOT in static archives to branch to a
function, regardless whether static archives is compiled with PIC or
not. When static archives are used to create dynamic executable,
PLT/GOT may be used. The resulting executable still works correctly.
[BZ #20750]
* sysdeps/x86_64/sysdep.h (JUMPTARGET): Check SHARED instead
of PIC.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | sysdeps/x86_64/sysdep.h | 3 |
2 files changed, 8 insertions, 1 deletions
@@ -1,3 +1,9 @@ +2016-11-28 H.J. Lu <hongjiu.lu@intel.com> + + [BZ #20750] + * sysdeps/x86_64/sysdep.h (JUMPTARGET): Check SHARED instead + of PIC. + 2016-11-28 Andrew Pinski <andrew.pinski@caviumnetworks.com> Yury Norov <ynorov@caviumnetworks.com> Steve Ellcey <sellcey@caviumnetworks.com> diff --git a/sysdeps/x86_64/sysdep.h b/sysdeps/x86_64/sysdep.h index 75ac747..4b67fa8 100644 --- a/sysdeps/x86_64/sysdep.h +++ b/sysdeps/x86_64/sysdep.h @@ -89,13 +89,14 @@ lose: \ END (name) #undef JUMPTARGET -#ifdef PIC +#ifdef SHARED # ifdef BIND_NOW # define JUMPTARGET(name) *name##@GOTPCREL(%rip) # else # define JUMPTARGET(name) name##@PLT # endif #else +/* For static archives, branch to target directly. */ # define JUMPTARGET(name) name #endif |