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-rw-r--r--scripts/decodetree.py18
1 files changed, 10 insertions, 8 deletions
diff --git a/scripts/decodetree.py b/scripts/decodetree.py
index 13db585d04..a8a6cb69cd 100644
--- a/scripts/decodetree.py
+++ b/scripts/decodetree.py
@@ -42,6 +42,7 @@ translate_scope = 'static '
input_file = ''
output_file = None
output_fd = None
+output_null = False
insntype = 'uint32_t'
decode_function = 'decode'
@@ -145,12 +146,7 @@ def error_with_file(file, lineno, *args):
if output_file and output_fd:
output_fd.close()
- # Do not try to remove e.g. -o /dev/null
- if not output_file.startswith("/dev"):
- try:
- os.remove(output_file)
- except PermissionError:
- pass
+ os.remove(output_file)
exit(0 if testforerror else 1)
# end error_with_file
@@ -1501,6 +1497,7 @@ def main():
global translate_prefix
global output_fd
global output_file
+ global output_null
global input_file
global insnwidth
global insntype
@@ -1514,7 +1511,8 @@ def main():
decode_scope = 'static '
long_opts = ['decode=', 'translate=', 'output=', 'insnwidth=',
- 'static-decode=', 'varinsnwidth=', 'test-for-error']
+ 'static-decode=', 'varinsnwidth=', 'test-for-error',
+ 'output-null']
try:
(opts, args) = getopt.gnu_getopt(sys.argv[1:], 'o:vw:', long_opts)
except getopt.GetoptError as err:
@@ -1545,6 +1543,8 @@ def main():
error(0, 'cannot handle insns of width', insnwidth)
elif o == '--test-for-error':
testforerror = True
+ elif o == '--output-null':
+ output_null = True
else:
assert False, 'unhandled option'
@@ -1574,7 +1574,9 @@ def main():
stree = build_size_tree(toppat.pats, 8, 0, 0)
prop_size(stree)
- if output_file:
+ if output_null:
+ output_fd = open(os.devnull, 'wt', encoding='utf-8', errors="ignore")
+ elif output_file:
output_fd = open(output_file, 'wt', encoding='utf-8')
else:
output_fd = io.TextIOWrapper(sys.stdout.buffer,