https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96001
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Szabolcs Nagy <n...@gcc.gnu.org>: https://gcc.gnu.org/g:315a7e8cca13530d4d3c5b5f39775c7a62877f3d commit r9-8742-g315a7e8cca13530d4d3c5b5f39775c7a62877f3d Author: Szabolcs Nagy <szabolcs.n...@arm.com> Date: Thu Jul 2 17:11:56 2020 +0100 aarch64: Fix BTI support in libgcc [PR96001] lse.S did not have the GNU property note markup and the BTI c instructions that are necessary when it is built with branch protection. The notes are only added when libgcc is built with branch protection, because old linkers mishandle the note (merge them incorrectly or emit warnings), the BTI instructions are added unconditionally. Note: BTI c is only necessary at function entry if the function may be called indirectly, currently lse functions are not called indirectly, but BTI is added for ABI reasons e.g. to allow linkers later to emit stub code with indirect jump. 2020-07-09 Szabolcs Nagy <szabolcs.n...@arm.com> libgcc/ChangeLog: PR target/96001 * config/aarch64/lse.S: Add BTI marking and related definitions, and add BTI c to function entries. (cherry picked from commit f0f62fa0320762119446893c67cb52934bc5a05e)
