https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106263
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jose E. Marchesi <jema...@gcc.gnu.org>: https://gcc.gnu.org/g:32566720f3a9135fa355f0304f024a79f107a1b8 commit r13-1918-g32566720f3a9135fa355f0304f024a79f107a1b8 Author: Jose E. Marchesi <jose.march...@oracle.com> Date: Fri Jul 8 18:32:02 2022 +0200 btf: emit linkage information in BTF_KIND_FUNC entries The kernel bpftool expects BTF_KIND_FUNC entries in BTF to include an annotation reflecting the linkage of functions (static, global). For whatever reason they abuse the `vlen' field of the BTF_KIND_FUNC entry instead of adding a variable-part to the record like it is done with other entry kinds. This patch makes GCC to include this linkage info in BTF_KIND_FUNC entries. Tested in bpf-unknown-none target. gcc/ChangeLog: PR debug/106263 * ctfc.h (struct ctf_dtdef): Add field linkage. * ctfc.cc (ctf_add_function): Set ctti_linkage. * dwarf2ctf.cc (gen_ctf_function_type): Pass a linkage for function types and subprograms. * btfout.cc (btf_asm_func_type): Emit linkage information for the function. (btf_dtd_emit_preprocess_cb): Propagate the linkage information for functions. gcc/testsuite/ChangeLog: PR debug/106263 * gcc.dg/debug/btf/btf-function-4.c: New test. * gcc.dg/debug/btf/btf-function-5.c: Likewise.
