[gdb/tdep] Add gdb/syscalls/update-linux-from-src.sh

Add a new script gdb/syscalls/update-linux-from-src.sh, that can be used to
generate *-linux.xml.in files from linux kernel sources, like so:
...
$ ./update-linux-from-src.sh ~/upstream/linux-stable.git
Skipping aarch64-linux.xml.in, no syscall.tbl
Generating amd64-linux.xml.in
Skipping arm-linux.xml.in, use arm-linux.py instead
Skipping bfin-linux.xml.in, no longer supported
Generating i386-linux.xml.in
Generating mips-n32-linux.xml.in
Generating mips-n64-linux.xml.in
Generating mips-o32-linux.xml.in
Generating ppc64-linux.xml.in
Generating ppc-linux.xml.in
Generating s390-linux.xml.in
Generating s390x-linux.xml.in
Generating sparc64-linux.xml.in
Generating sparc-linux.xml.in
...

Update *-linux.xml.in and *-linux.xml using linux kernel tag v5.18-rc6.

1 files changed, 4 insertions, 1 deletions

diff --git a/gdb/syscalls/ppc-linux.xml.in b/gdb/syscalls/ppc-linux.xml.in
index 61c7c58..f22f357 100644
--- a/gdb/syscalls/ppc-linux.xml.in
+++ b/gdb/syscalls/ppc-linux.xml.in
@@ -9,7 +9,7 @@
 
 <!-- This file was generated using the following file:
 
-     <sys/syscall.h>
+     arch/powerpc/kernel/syscalls/syscall.tbl
 
      The file mentioned above belongs to the Linux Kernel.  -->
 
@@ -443,4 +443,7 @@
   <syscall name="landlock_create_ruleset" number="444"/>
   <syscall name="landlock_add_rule" number="445"/>
   <syscall name="landlock_restrict_self" number="446"/>
+  <syscall name="process_mrelease" number="448"/>
+  <syscall name="futex_waitv" number="449"/>
+  <syscall name="set_mempolicy_home_node" number="450"/>
 </syscalls_info>