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-rw-r--r--py/makeqstrdata.py17
1 files changed, 14 insertions, 3 deletions
diff --git a/py/makeqstrdata.py b/py/makeqstrdata.py
index c8e998ed11..48fd9e09d4 100644
--- a/py/makeqstrdata.py
+++ b/py/makeqstrdata.py
@@ -73,16 +73,27 @@ def do_work(infiles):
# add the qstr to the list, with order number to retain original order in file
qstrs[ident] = (len(qstrs), ident, qstr)
- # process the qstrs, printing out the generated C header file
+ # get config variables
+ cfg_bytes_len = int(qcfgs['BYTES_IN_LEN'])
+ cfg_max_len = 1 << (8 * cfg_bytes_len)
+
+ # print out the starte of the generated C header file
print('// This file was automatically generated by makeqstrdata.py')
print('')
+
# add NULL qstr with no hash or data
- print('QDEF(MP_QSTR_NULL, (const byte*)"\\x00\\x00\\x00\\x00" "")')
+ print('QDEF(MP_QSTR_NULL, (const byte*)"\\x00\\x00%s" "")' % ('\\x00' * cfg_bytes_len))
+
+ # go through each qstr and print it out
for order, ident, qstr in sorted(qstrs.values(), key=lambda x: x[0]):
qhash = compute_hash(qstr)
qlen = len(qstr)
qdata = qstr.replace('"', '\\"')
- print('QDEF(MP_QSTR_%s, (const byte*)"\\x%02x\\x%02x\\x%02x\\x%02x" "%s")' % (ident, qhash & 0xff, (qhash >> 8) & 0xff, qlen & 0xff, (qlen >> 8) & 0xff, qdata))
+ if qlen >= cfg_max_len:
+ print('qstr is too long:', qstr)
+ assert False
+ qlen_str = ('\\x%02x' * cfg_bytes_len) % tuple(qlen.to_bytes(cfg_bytes_len, 'little'))
+ print('QDEF(MP_QSTR_%s, (const byte*)"\\x%02x\\x%02x%s" "%s")' % (ident, qhash & 0xff, (qhash >> 8) & 0xff, qlen_str, qdata))
return True