https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65612
--- Comment #7 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> --- Author: hjl Date: Fri Apr 17 12:58:07 2015 New Revision: 222178 URL: https://gcc.gnu.org/viewcvs?rev=222178&root=gcc&view=rev Log: Hide __cpu_indicator_init/__cpu_model from linker We shouldn't call external function, __cpu_indicator_init, while an object is being relocated since its .got.plt section hasn't been updated. It works for non-PIE since no update on .got.plt section is required. This patch creates libgcc.so as a linker script, hides __cpu_indicator_init and __cpu_model in libgcc.so.1 from linker, forces linker to resolve __cpu_indicator_init and __cpu_model to their hidden definitions in libgcc.a while providing backward binary compatibility. gcc/testsuite/ PR target/65612 * g++.dg/ext/mv18.C: New test. * g++.dg/ext/mv19.C: Likewise. * g++.dg/ext/mv20.C: Likewise. * g++.dg/ext/mv21.C: Likewise. * g++.dg/ext/mv22.C: Likewise. * g++.dg/ext/mv23.C: Likewise. libgcc/ PR target/65612 * config.host (tmake_file): Add t-slibgcc-libgcc for Linux/x86. * config/i386/cpuinfo.c (__cpu_model): Initialize. (__cpu_indicator_init@GCC_4.8.0): New. (__cpu_model@GCC_4.8.0): Likewise. * config/i386/t-linux (HOST_LIBGCC2_CFLAGS): Add -DUSE_ELF_SYMVER. Added: trunk/gcc/testsuite/g++.dg/ext/mv18.C trunk/gcc/testsuite/g++.dg/ext/mv19.C trunk/gcc/testsuite/g++.dg/ext/mv20.C trunk/gcc/testsuite/g++.dg/ext/mv21.C trunk/gcc/testsuite/g++.dg/ext/mv22.C trunk/gcc/testsuite/g++.dg/ext/mv23.C Modified: trunk/gcc/testsuite/ChangeLog trunk/libgcc/ChangeLog trunk/libgcc/config.host trunk/libgcc/config/i386/cpuinfo.c trunk/libgcc/config/i386/t-linux
