Lerking/micropython
1
0
Fork 0
mirror of https://github.com/micropython/micropython.git synced 2026-01-07 12:40:15 +01:00
Code Issues Actions 27 Packages Projects Releases Wiki Activity

py/persistentcode: Make .mpy more compact with qstr directly in prelude.

Browse Source 
Instead of encoding 4 zero bytes as placeholders for the simple_name and
source_file qstrs, and storing the qstrs after the bytecode, store the
qstrs at the location of these 4 bytes.  This saves 4 bytes per bytecode
function stored in a .mpy file (for example lcd160cr.mpy drops by 232
bytes, 4x 58 functions).  And resulting code size is slightly reduced on
ports that use this feature.
This commit is contained in:
Damien George
2019-10-10 15:30:16 +11:00
parent 858e992d2e
commit 23f0691fdd
3 changed files with 57 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
tests/import/mpy_native.py
View File

@@ -57,11 +57,11 @@ user_files = {
b'M\x05\x0b\x1f\x20' # header
b'\x20' # n bytes, bytecode
b'\x00\x08\x00\x00\x00\x00' # prelude
b'\x00\x08\x02m\x02m' # prelude
b'\x51' # LOAD_CONST_NONE
b'\x63' # RETURN_VALUE
b'\x02m\x02m\x00\x02' # simple_name, source_file, n_obj, n_raw_code
b'\x00\x02' # n_obj, n_raw_code
b'\x22' # n bytes, viper code
b'\x00\x00\x00\x00\x00\x00' # dummy machine code