Re: [PATCH 0/2] Autogenerate gdb/syscalls/linux-defaults.xml.in (syscall groups) from strace sources

[Pedro Alves <pedro@palves.net>]

On 2023-02-25 9:31 a.m., Tom de Vries wrote:
> On 2/25/23 00:26, Pedro Alves wrote:
>> While working on the step-over-thread-clone/exit series, I noticed
>> that one of the new tests was failing.  The test does "catch syscall
>> clone", and expects that pthread_create calls clone.  Turns out that
>> on the glibc shipped with Ubuntu 22.04, pthread_create calls clone3,
>> not clone.  To make the test cope with that, I thought of switching it
>> to "catch syscall group:process".  Surprisingly, that catches "clone",
>> but not "clone3".
>>
>> This series fixes that, by adding a script that extracts the syscall
>> group info out the strace sources.
>>
> 
> If I understand correctly, this is orthogonal to update-linux-from-src.sh ?

Right.  This generates the linux-defaults.xml.in file, which is not generated
by update-linux-from-src.sh.  The groups info is not found in the kernel.
linux-defaults.xml.in maps between syscall names and groups.  The arch xml.in files
map syscall number to name.  The makefile combines each arch xml.in with
linux-defaults.xml.in generating a final .xml file with maps the number to
name, and to groups.

> [ FWIW, i've just ran update-linux-from-src.sh with linux kernel sources v6.2, and there where no changes. ]

Great, I was wondering whether we needed to re-run that with a recent kernel.  Thanks for
taking care of it.

Pedro Alves