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From: "dsmith at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug translator/16914] probe syscall.* fails with compilation error
Date: Tue, 06 May 2014 14:30:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D16914

David Smith <dsmith at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dsmith at redhat dot com

--- Comment #2 from David Smith <dsmith at redhat dot com> ---
(In reply to Martin Cermak from comment #0)
> Created attachment 7588 [details]
> stap output
>=20
> On aarch64, stap -e 'probe syscall.* { log("hey!"); exit() }' returns err=
ors
> like this:
>=20
> /tmp/stapV76Au7/stap_19d2b02d95ec8b13d55cf356928e49ab_143230_src.c: In
> function =E2=80=98probe_2344=E2=80=99:
> /tmp/stapV76Au7/stap_19d2b02d95ec8b13d55cf356928e49ab_143230_src.c:11776:=
43:
> error: =E2=80=98__NR_compat_clone=E2=80=99 undeclared (first use in this =
function)
>        if ((((l->l___nr) !=3D ((((int64_t) ( __NR_compat_clone ))))))) {

I understand what is going on here, but I need some aarch64 education to kn=
ow
how to fix it. Does aarch64 run 32-bit executables? Is the CONFIG_COMPAT op=
tion
on on an aarch64 kernel?

If so, aarch64 will need its own section in runtime/linux/compat_unistd.h.

If not, something wacky is going on and that code should have never been hi=
t.

--=20
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