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author | H.J. Lu <hjl.tools@gmail.com> | 2014-12-21 09:12:04 -0800 |
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committer | H.J. Lu <hjl.tools@gmail.com> | 2014-12-21 09:27:11 -0800 |
commit | 050f7298e1ecc39887c329037575ccd972071255 (patch) | |
tree | 3e4caaa9640efd7e9a7020943f932c426b29ba29 /sysdeps/generic | |
parent | 6df5547e9349f0e22cd4356c8ef517e97530ddd0 (diff) | |
download | glibc-050f7298e1ecc39887c329037575ccd972071255.tar.gz glibc-050f7298e1ecc39887c329037575ccd972071255.tar.xz glibc-050f7298e1ecc39887c329037575ccd972071255.zip |
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/generic')
-rw-r--r-- | sysdeps/generic/localplt.data | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/sysdeps/generic/localplt.data b/sysdeps/generic/localplt.data index d7d673454f..1a40cf9841 100644 --- a/sysdeps/generic/localplt.data +++ b/sysdeps/generic/localplt.data @@ -7,10 +7,9 @@ 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. -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 |