x86: Simplify syscallhdr.sh

Simplify syscallhdr.sh by letting grep sort out the ABIs that we want,
rather than relying on manual list matching.  This is safe since the
ABI strings already have to consist only of characters which are valid in C
macro names.
Suggested-by: Matt Helsley <matthltc@us.ibm.com>
Link: http://lkml.kernel.org/r/20111118221558.GA6408@count0.beaverton.ibm.comSigned-off-by: H. Peter Anvin <hpa@linux.intel.com>

arch/x86/syscalls/syscallhdr.sh

@@ -2,33 +2,20 @@
 
 in="$1"
 out="$2"
-my_abis=`echo "$3" | tr ',' ' '`
+my_abis=`echo "($3)" | tr ',' '|'`
 prefix="$4"
 offset="$5"
 
 fileguard=_ASM_X86_`basename "$out" | sed \
     -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
     -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
-
-in_list () {
-    local x
-    for x in $1; do
-	if [ x"$x" = x"$2" ]; then
-	    return 0
-	fi
-    done
-    return 1
-}
-
-grep '^[0-9]' "$in" | sort -n | (
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
     echo "#ifndef ${fileguard}"
     echo "#define ${fileguard} 1"
     echo ""
 
     while read nr abi name entry ; do
-	if in_list "$my_abis" "$abi"; then
 	echo "#define __NR_${prefix}${name}" $((nr+offset))
-        fi
     done
 
     echo ""