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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-06-07 11:11:03 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-06-24 17:45:58 -0300 |
| commit | baf2a265c71113a91f6971313ef191be9e77ef6a (patch) | |
| tree | ad894e8766707e8c10e98b6e4c857ab315fa0276 /sysdeps | |
| parent | 5b41b2659d35b72636ab50a28d6815cad9c22a66 (diff) | |
| download | glibc-baf2a265c71113a91f6971313ef191be9e77ef6a.tar.gz glibc-baf2a265c71113a91f6971313ef191be9e77ef6a.tar.xz glibc-baf2a265c71113a91f6971313ef191be9e77ef6a.zip | |
misc: Optimize internal usage of __libc_single_threaded
By adding an internal alias to avoid the GOT indirection.
On some architecture, __libc_single_thread may be accessed through
copy relocations and thus it requires to update also the copies
default copy.
This is done by adding a new internal macro,
libc_hidden_data_{proto,def}, which has an addition argument that
specifies the alias name (instead of default __GI_ one).
Checked on x86_64-linux-gnu and i686-linux-gnu.
Reviewed-by: Fangrui Song <maskray@google.com>
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/nptl/setxid.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/nptl/setxid.h b/sysdeps/nptl/setxid.h index b821d6bc07..b87cad7b18 100644 --- a/sysdeps/nptl/setxid.h +++ b/sysdeps/nptl/setxid.h @@ -29,7 +29,7 @@ #define INLINE_SETXID_SYSCALL(name, nr, args...) \ ({ \ int __result; \ - if (!__libc_single_threaded) \ + if (!__libc_single_threaded_internal) \ { \ struct xid_command __cmd; \ __cmd.syscall_no = __NR_##name; \ |