[PATCH 01/15] objtool: Find a destination for jumps beyond the section end

[Sami Tolvanen]

With -ffunction-sections, Clang can generate a jump beyond the end of
a section when the section ends in an unreachable instruction. If the
offset matches the section length, use the last instruction as the
jump destination.

Signed-off-by: Sami Tolvanen <samitolva...@google.com>
---
 tools/objtool/check.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index a0a8ce61cd4d..5fd60e055a5c 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -870,6 +870,10 @@ static int add_jump_destinations(struct objtool_file *file)
                }
 
                insn->jump_dest = find_insn(file, dest_sec, dest_off);
+
+               if (!insn->jump_dest && dest_sec->len == dest_off)
+                       insn->jump_dest = find_last_insn(file, dest_sec);
+
                if (!insn->jump_dest) {
 
                        /*
-- 
2.31.1.368.gbe11c130af-goog