diff options
| author | Alexandre Chartre <alexandre.chartre@oracle.com> | 2025-11-21 10:53:21 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-11-21 15:30:10 +0100 |
| commit | fcb268b47a2f4a497fdb40ef24bb9e06488b7213 (patch) | |
| tree | 1b33d6d5c0ac717905fc6ad75a5acc473ae3db80 /tools/objtool/check.c | |
| parent | 70589843b36fee0c6e73632469da4e5fd11f0968 (diff) | |
objtool: Trace instruction state changes during function validation
During function validation, objtool maintains a per-instruction state,
in particular to track call frame information. When tracing validation,
print any instruction state changes.
Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://patch.msgid.link/20251121095340.464045-12-alexandre.chartre@oracle.com
Diffstat (limited to 'tools/objtool/check.c')
| -rw-r--r-- | tools/objtool/check.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 409dec9efb49..a02f8db75827 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -3677,6 +3677,8 @@ static int validate_insn(struct objtool_file *file, struct symbol *func, struct instruction *prev_insn, struct instruction *next_insn, bool *dead_end) { + /* prev_state is not used if there is no disassembly support */ + struct insn_state prev_state __maybe_unused; struct alternative *alt; u8 visited; int ret; @@ -3785,7 +3787,11 @@ static int validate_insn(struct objtool_file *file, struct symbol *func, if (skip_alt_group(insn)) return 0; - if (handle_insn_ops(insn, next_insn, statep)) + prev_state = *statep; + ret = handle_insn_ops(insn, next_insn, statep); + TRACE_INSN_STATE(insn, &prev_state, statep); + + if (ret) return 1; switch (insn->type) { |