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1#!/usr/bin/env python3
2
3import re
4import sys
5
6from  urllib.request import urlopen
7
8syscalls = {}
9
10
11def print_table(name):
12  tab = syscalls[name]
13  print('\n\n----------------- BEGIN OF %s -----------------' % name)
14  for i in range(max(tab.keys()) + 1):
15    print('"%s",  // %d' % (tab.get(i, ''), i))
16  print('----------------- END OF %s -----------------' % name)
17
18
19# Parses a .tbl file (new format).
20def parse_tlb(data):
21  table = {}
22  for line in data.splitlines():
23    line = line.strip()
24    if line.startswith('#') or not (line):
25      continue
26    parts = line.split()
27    table[int(parts[0])] = 'sys_' + parts[2]
28  return table
29
30
31# Parses a #define __NR_xx 1234 old-style unistd.h header.
32def parse_def(data):
33  table = {}
34  for line in data.splitlines():
35    m = re.match(r'^#define\s+__NR\d*?_(\w+)\s+(\d+)\s*$', line.strip())
36    if not m or m.group(1) == 'syscalls':  # __NR_syscalls is just a sentinel.
37      continue
38    table[int(m.group(2))] = 'sys_' + m.group(1)
39  return table
40
41
42def Main():
43  KSRC = 'https://raw.githubusercontent.com/torvalds/linux/v4.20/'
44
45  response = urlopen(KSRC + 'arch/x86/entry/syscalls/syscall_64.tbl')
46  syscalls['x86_64'] = parse_tlb(response.read().decode())
47
48  response = urlopen(KSRC + 'arch/x86/entry/syscalls/syscall_32.tbl')
49  syscalls['x86'] = parse_tlb(response.read().decode())
50
51  response = urlopen(KSRC + 'arch/arm/tools/syscall.tbl')
52  syscalls['armeabi'] = parse_tlb(response.read().decode())
53
54  response = urlopen(KSRC + 'arch/arm64/include/asm/unistd32.h')
55  syscalls['aarch32'] = parse_def(response.read().decode())
56
57  # From:
58  # arch/arm64/include/asm/unistd.h
59  #   -> arch/arm64/include/uapi/asm/unistd.h
60  #     -> include/uapi/asm-generic/unistd.h
61  response = urlopen(KSRC + 'include/uapi/asm-generic/unistd.h')
62  syscalls['aarch64'] = parse_def(response.read().decode())
63
64  print_table('x86_64')
65  print_table('x86')
66  print_table('aarch64')
67  print_table('armeabi')
68  print_table('aarch32')
69
70
71if __name__ == '__main__':
72  sys.exit(Main())