Hi Ellie,
On Sun, Jun 26, 2022 at 10:13:37AM +0200, ellie wrote:
> How do I run openssl programs in valgrind on processors where it causes
> SIGILL? https://www.openssl.org/docs/faq.html#PROG17
>
> They recommend to use handle SIGILL nostop, but the only mention in the
> valgrind documentation of that seems to be how to do this in gdb, not how to
> do this in valgrind itself.
Valgrind has (see the man page or manual):
--sigill-diagnostics=<yes|no> [default: yes]
Enable/disable printing of illegal instruction
diagnostics. Enabled by default, but defaults to disabled
when --quiet is given. The default can always be explicitly
overridden by giving this option.
When enabled, a warning message will be printed, along with
some diagnostics, whenever an instruction is encountered
that Valgrind cannot decode or translate, before the
program is given a SIGILL signal. Often an illegal
instruction indicates a bug in the program or missing
support for the particular instruction in Valgrind. But
some programs do deliberately try to execute an instruction
that might be missing and trap the SIGILL signal to detect
processor features. Using this flag makes it possible to
avoid the diagnostic output that you would otherwise get in
such cases.
Hope that helps.
Cheers,
Mark
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