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| author | Florian Weimer <fweimer@redhat.com> | 2016-11-30 15:59:57 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2016-11-30 15:59:57 +0100 |
| commit | 9e78f6f6e7134a5f299cc8de77370218f8019237 (patch) | |
| tree | 04aa339daf9901b8fc1851353c697528659e7afe /sysdeps/x86_64/localplt.data | |
| parent | 705a79f82560ff6472cebed86aa5db04cdea3bce (diff) | |
| download | glibc-9e78f6f6e7134a5f299cc8de77370218f8019237.tar.gz | |
Implement _dl_catch_error, _dl_signal_error in libc.so [BZ #16628]
This change moves the main implementation of _dl_catch_error,
_dl_signal_error to libc.so, where TLS variables can be used
directly. This removes a writable function pointer from the
rtld_global variable.
For use during initial relocation, minimal implementations of these
functions are provided in ld.so. These are eventually interposed
by the libc.so implementations. This is implemented by compiling
elf/dl-error-skeleton.c twice, via elf/dl-error.c and
elf/dl-error-minimal.c.
As a side effect of this change, the static version of dl-error.c
no longer includes support for the
_dl_signal_cerror/_dl_receive_error mechanism because it is only
used in ld.so.
Diffstat (limited to 'sysdeps/x86_64/localplt.data')
| -rw-r--r-- | sysdeps/x86_64/localplt.data | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/x86_64/localplt.data b/sysdeps/x86_64/localplt.data index f168b143ff..28096f893e 100644 --- a/sysdeps/x86_64/localplt.data +++ b/sysdeps/x86_64/localplt.data @@ -17,3 +17,6 @@ ld.so: malloc + RELA R_X86_64_GLOB_DAT ld.so: calloc + RELA R_X86_64_GLOB_DAT ld.so: realloc + RELA R_X86_64_GLOB_DAT ld.so: free + RELA R_X86_64_GLOB_DAT +# The TLS-enabled version of these functions is interposed from libc.so. +ld.so: _dl_signal_error + RELA R_X86_64_GLOB_DAT +ld.so: _dl_catch_error + RELA R_X86_64_GLOB_DAT |