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decodetree: Allow multiple input files

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While it would be possible to concatenate input files with make,
passing the original input files to decodetree.py allows us to
generate error messages which allows compilation environments
(read: emacs) to next-error to the correct input file.

Backports commit 6699ae6a8e74381583622502db8bd47fac381c9e from qemu
This commit is contained in:
Richard Henderson 2018-11-11 08:28:51 -05:00 committed by Lioncash
parent 4d49c004e4
commit 800c9db9c9
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 17 additions and 10 deletions
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27
qemu/scripts/decodetree.py
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@ -175,15 +175,15 @@ decode_function = 'decode'
re_ident = '[a-zA-Z][a-zA-Z0-9_]*'
def error(lineno, *args):
def error_with_file(file, lineno, *args):
"""Print an error message from file:line and args and exit."""
global output_file
global output_fd
if lineno:
r = '{0}:{1}: error:'.format(input_file, lineno)
r = '{0}:{1}: error:'.format(file, lineno)
elif input_file:
r = '{0}: error:'.format(input_file)
r = '{0}: error:'.format(file)
else:
r = 'error:'
for a in args:
@ -196,6 +196,10 @@ def error(lineno, *args):
exit(1)
def error(lineno, *args):
error_with_file(input_file, lineno, args)
def output(*args):
global output_fd
for a in args:
@ -420,6 +424,7 @@ class General:
"""Common code between instruction formats and instruction patterns"""
def __init__(self, name, lineno, base, fixb, fixm, udfm, fldm, flds):
self.name = name
self.file = input_file
self.lineno = lineno
self.base = base
self.fixedbits = fixb
@ -472,7 +477,7 @@ class Pattern(General):
global translate_prefix
ind = str_indent(i)
arg = self.base.base.name
output(ind, '/* line ', str(self.lineno), ' */\n')
output(ind, '/* ', self.file, ':', str(self.lineno), ' */\n')
if not extracted:
output(ind, self.base.extract_name(), '(&u.f_', arg, ', insn);\n')
for n, f in self.fields.items():
@ -920,8 +925,9 @@ def build_tree(pats, outerbits, outermask):
if innermask == 0:
pnames = []
for p in pats:
pnames.append(p.name + ':' + str(p.lineno))
error(pats[0].lineno, 'overlapping patterns:', pnames)
pnames.append(p.name + ':' + p.file + ':' + str(p.lineno))
error_with_file(pats[0].file, pats[0].lineno,
'overlapping patterns:', pnames)
fullmask = outermask | innermask
@ -1012,10 +1018,11 @@ def main():
if len(args) < 1:
error(0, 'missing input file')
input_file = args[0]
f = open(input_file, 'r')
parse_file(f)
f.close()
for filename in args:
input_file = filename
f = open(filename, 'r')
parse_file(f)
f.close()
t = build_tree(patterns, 0, 0)
prop_format(t)