When objtool generates relocations for the __mcount_loc section, it
tries to reference __fentry__ calls by their section symbol offset.
However, this fails with Clang's integrated assembler as it may not
generate section symbols for every section. This patch looks up a
function symbol instead if the section symbol is missing, similarly
to commit e81e072443 ("objtool: Support Clang non-section symbols
in ORC generation").
Bug: 145210207
Change-Id: I1069c45a81a3b60eb8f8333581c379701145982f
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
4ebe2a37ac