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| author | H.J. Lu <hjl.tools@gmail.com> | 2014-12-21 09:12:04 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2014-12-21 09:27:11 -0800 |
| commit | 050f7298e1ecc39887c329037575ccd972071255 (patch) | |
| tree | 3e4caaa9640efd7e9a7020943f932c426b29ba29 /sysdeps/unix | |
| parent | 6df5547e9349f0e22cd4356c8ef517e97530ddd0 (diff) | |
| download | glibc-050f7298e1ecc39887c329037575ccd972071255.tar.gz | |
Add hidden __tls_get_addr/___tls_get_addr alias
__tls_get_addr/___tls_get_addr is always defined in ld.so. There is
no need to call them via PLT inside ld.so. This patch adds the hidden
__tls_get_addr/___tls_get_addr aliases and calls them directly from
_dl_tlsdesc_dynamic. There is no need to set up the EBX register in
i386 _dl_tlsdesc_dynamic when calling the hidden ___tls_get_addr.
* elf/dl-tls.c (__tls_get_addr): Provide the hidden definition
if not defined.
* sysdeps/i386/dl-tls.h (___tls_get_addr): Provide the hidden
definition.
* sysdeps/i386/dl-tlsdesc.S (_dl_tlsdesc_dynamic): Call the
hidden ___tls_get_addr.
* sysdeps/x86_64/dl-tlsdesc.S (_dl_tlsdesc_dynamic): Call the
hidden __tls_get_addr.
* sysdeps/generic/localplt.data (__tls_get_addr): Removed.
* sysdeps/unix/sysv/linux/i386/localplt.data (___tls_get_addr):
Likewise.
Diffstat (limited to 'sysdeps/unix')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/localplt.data | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/localplt.data b/sysdeps/unix/sysv/linux/i386/localplt.data index 009797bc06..b25abf8006 100644 --- a/sysdeps/unix/sysv/linux/i386/localplt.data +++ b/sysdeps/unix/sysv/linux/i386/localplt.data @@ -5,12 +5,9 @@ libc.so: malloc libc.so: memalign libc.so: realloc libm.so: matherr -# The dynamic loader needs ___tls_get_addr for TLS, and uses __libc_memalign -# internally to allocate aligned TLS storage. The other malloc family of -# functions are expected to allow user symbol interposition. -# Note that it is triple underscore for ___tls_get_addr e.g. the alternate -# ABI. -ld.so: ___tls_get_addr +# The dynamic loader uses __libc_memalign internally to allocate aligned +# TLS storage. The other malloc family of functions are expected to allow +# user symbol interposition. ld.so: __libc_memalign ld.so: malloc ld.so: calloc |