Assign syscalls into groups. Add whitelist mode (default).

Classify syscalls into groups, for x86_64 only for now.
Up to date for 5.15, generate some #ifndef for syscalls
introduced since 5.10. Only support x86_64 therefore at this point.

Switch from blacklisting to a default whitelist.

gengroup.py

@@ -0,0 +1,55 @@
+#!/usr/bin/python
+import sys
+import re
+if len(sys.argv) < 2:
+	print("Usage: gengroup groupfile")
+	sys.exit(1)
+fd = open(sys.argv[1], "r")
+
+lines = fd.read().splitlines()
+
+groupnames = set()
+ifndef = dict()	
+
+def print_ifndefs():
+	for name in ifndef:
+		print("#ifndef __NR_%s" % name)
+		print("#define __NR_%s %s" % (name, ifndef[name]))
+		print("#endif")
+
+def print_defines(names):
+	names = sorted(names)
+	i = 0
+	for name in names:
+		define = "#define %s ((uint64_t)1<<%s)" % (name, i)
+		print(define)
+		i = i + 1
+
+for line in lines:
+	if line[0] == '#':
+		continue
+
+	splitted = line.split(' ')
+	if len(splitted) < 2:
+		print("Misformated line:", line)
+		sys.exit(1)
+
+	currentsyscall = splitted[0]
+	currentgroups = splitted[1].split(',')
+	
+	flags = splitted[2] if len(splitted) > 2 else ""
+	if any( not s or s.isspace() for s in currentgroups ):
+		print("Misformated line (empty values):", line)
+		sys.exit(1)
+	groupnames.update(currentgroups)
+	
+	genifndef = re.match(r"genifndef\((\d+)*\)", flags)
+	if genifndef:
+		ifndef[currentsyscall] = genifndef.groups(1)[0]
+	
+	array_line = "{QSSB_SYS(%s), %s}," % (currentsyscall, '|'.join(currentgroups))
+	print(array_line)
+
+print_ifndefs()
+print_defines(groupnames)
+