Alexandre Chartre
350c7ab857
objtool: Improve tracing of alternative instructions
...
When tracing function validation, improve the reporting of
alternative instruction by more clearly showing the different
alternatives beginning and end.
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/20251121095340.464045-16-alexandre.chartre@oracle.com
2025-11-21 15:30:11 +01:00
Alexandre Chartre
26a453fb56
objtool: Improve register reporting during function validation
...
When tracing function validation, instruction state changes can
report changes involving registers. These registers are reported
with the name "r<num>" (e.g. "r3"). Print the CPU specific register
name instead of a generic name (e.g. print "rbx" instead of "r3"
on x86).
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/20251121095340.464045-13-alexandre.chartre@oracle.com
2025-11-21 15:30:10 +01:00
Alexandre Chartre
fcb268b47a
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
2025-11-21 15:30:10 +01:00
Alexandre Chartre
70589843b3
objtool: Add option to trace function validation
...
Add an option to trace and have information during the validation
of specified functions. Functions are specified with the --trace
option which can be a single function name (e.g. --trace foo to
trace the function with the name "foo"), or a shell wildcard
pattern (e.g. --trace foo* to trace all functions with a name
starting with "foo").
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/20251121095340.464045-11-alexandre.chartre@oracle.com
2025-11-21 15:30:09 +01:00
