Re: [PATCH v4 3/6] parisc: add system call table generation support

From: Rolf Eike Beer
Date: Fri Oct 12 2018 - 10:03:43 EST


Firoz Khan wrote:

> +
> + my_abi="$(cut -d'|' -f2 <<< $my_abis)"

Here is the logic of identifying the generated script is for compat interface
or not. So systbl_abi_syscall_table_c32 := common,compat,32 in Makefile
will parse the script and check the second string whether this is
"compat" or not.

Other ways are:
1. add an extra flag, that will again add the complexity
2. check if [ ${out: -5} = "c32.h" ], this looks weird

Is there any better way to do the same?

What part is that comment directed at? I guess it's the next hunk, so I'll comment on that.

"<<<" is a bash extension and will not work with /bin/sh.

> + while read nr abi name entry compat ; do
> + if [ $my_abi = "compat" ]; then
> + if [ -z "$compat" ]; then
> + emit $nxt $nr $entry
> + else
> + emit $nxt $nr $compat
> + fi
> + else
> + emit $nxt $nr $entry
> + fi

I would go for a local variable being set to $compat or $entry and
calling emit at only one place. And there should be only one if with 2
expressions, no need for 3 branches.

if [ $my_abi = "compat" -a -n "${compat}" ]; then
somevar=${compat}
else
somevar=${entry}
fi
emit $nxt $nr $somevar

Eike