target/mips: Remove XBurst Media eXtension Unit dead code
[qemu/ar7.git] / scripts / check_sparse.py
blob2956124442300db515391791e64527d816c3bc72
1 #! /usr/bin/env python3
3 # Invoke sparse based on the contents of compile_commands.json,
4 # also working around several deficiencies in cgcc's command line
5 # parsing
7 import json
8 import subprocess
9 import os
10 import sys
11 import shlex
13 def cmdline_for_sparse(sparse, cmdline):
14     # Do not include the C compiler executable
15     skip = True
16     arg = False
17     out = sparse + ['-no-compile']
18     for x in cmdline:
19         if arg:
20             out.append(x)
21             arg = False
22             continue
23         if skip:
24             skip = False
25             continue
26         # prevent sparse from treating output files as inputs
27         if x == '-MF' or x == '-MQ' or x == '-o':
28             skip = True
29             continue
30         # cgcc ignores -no-compile if it sees -M or -MM?
31         if x.startswith('-M'):
32             continue
33         # sparse does not understand these!
34         if x == '-iquote' or x == '-isystem':
35             x = '-I'
36         if x == '-I':
37             arg = True
38         out.append(x)
39     return out
41 root_path = os.getenv('MESON_BUILD_ROOT')
42 def build_path(s):
43     return s if not root_path else os.path.join(root_path, s)
45 ccjson_path = build_path(sys.argv[1])
46 with open(ccjson_path, 'r') as fd:
47     compile_commands = json.load(fd)
49 sparse = sys.argv[2:]
50 sparse_env = os.environ.copy()
51 for cmd in compile_commands:
52     cmdline = shlex.split(cmd['command'])
53     cmd = cmdline_for_sparse(sparse, cmdline)
54     print('REAL_CC=%s' % shlex.quote(cmdline[0]),
55           ' '.join((shlex.quote(x) for x in cmd)))
56     sparse_env['REAL_CC'] = cmdline[0]
57     r = subprocess.run(cmd, env=sparse_env, cwd=root_path)
58     if r.returncode != 0:
59         sys.exit(r.returncode)