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tools/mpy-tool.py: Allow dumping MPY segments into their own files. #17306

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tools/mpy-tool.py: Allow dumping MPY segments into their own files. #17306

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49 changes: 49 additions & 0 deletions tools/mpy-tool.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1765,6 +1765,44 @@ def copy_section(file, offset, offset2):
f.write(merged_mpy)


def extract_segments(compiled_modules, basename, kinds_arg):
import re

kind_str = ("META", "QSTR", "OBJ", "CODE")
kinds = set()
if kinds_arg is not None:
for kind in kinds_arg.upper().split(","):
if kind in kind_str:
kinds.add(kind)
else:
raise Exception('unknown segment kind "%s"' % (kind,))
segments = []
for module in compiled_modules:
for segment in module.mpy_segments:
if not kinds or kind_str[segment.kind] in kinds:
segments.append((module.mpy_source_file, module.source_file.str, segment))
count_len = len(str(len(segments)))
sanitiser = re.compile("[^a-zA-Z0-9_.-]")
for counter, entry in enumerate(segments):
file_name, source_file, segment = entry
output_name = (
basename
+ "_"
+ str(counter).rjust(count_len, "0")
+ "_"
+ sanitiser.sub("_", source_file)
+ "_"
+ kind_str[segment.kind]
+ "_"
+ sanitiser.sub("_", str(segment.name))
+ ".bin"
)
with open(file_name, "rb") as source:
with open(output_name, "wb") as output:
source.seek(segment.start)
output.write(source.read(segment.end - segment.start))


def main(args=None):
global global_qstrs

Expand All @@ -1781,6 +1819,14 @@ def main(args=None):
cmd_parser.add_argument(
"--merge", action="store_true", help="merge multiple .mpy files into one"
)
cmd_parser.add_argument(
"-e", "--extract", metavar="BASE", type=str, help="write segments into separate files"
)
cmd_parser.add_argument(
"--extract-only",
metavar="KIND[,...]",
help="extract only segments of the given type (meta, qstr, obj, code)",
)
cmd_parser.add_argument("-q", "--qstr-header", help="qstr header file to freeze against")
cmd_parser.add_argument(
"-mlongint-impl",
Expand Down Expand Up @@ -1848,6 +1894,9 @@ def main(args=None):
if args.merge:
merge_mpy(compiled_modules, args.output)

if args.extract:
extract_segments(compiled_modules, args.extract, args.extract_only)


if __name__ == "__main__":
main()
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