From 9e78f6f6e7134a5f299cc8de77370218f8019237 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Wed, 30 Nov 2016 15:59:57 +0100 Subject: 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. --- sysdeps/generic/localplt.data | 3 +++ 1 file changed, 3 insertions(+) (limited to 'sysdeps/generic/localplt.data') diff --git a/sysdeps/generic/localplt.data b/sysdeps/generic/localplt.data index 1a40cf9841..5cf53a4c21 100644 --- a/sysdeps/generic/localplt.data +++ b/sysdeps/generic/localplt.data @@ -15,3 +15,6 @@ ld.so: malloc ld.so: calloc ld.so: realloc ld.so: free +# The TLS-enabled version of these functions is interposed from libc.so. +ld.so: _dl_signal_error +ld.so: _dl_catch_error -- cgit 1.4.1