suspect-devices/circuitpython/py/bc.h, branch v1.4.1CircuitPython - a Python implementation for teaching coding with microcontrollershttps://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.4.12015-04-02T21:03:07+00:00vm: Initial support for calling bytecode functions w/o C stack ("stackless").2015-04-02T21:03:07+00:00Paul Sokolovskypfalcon@users.sourceforge.net2015-03-27T23:14:44+00:00urn:sha1:2039757b854b656a41c9e041776ccd5dad8ec5fepy: Make old_globals part of mp_code_state structure.2015-02-15T16:24:15+00:00Paul Sokolovskypfalcon@users.sourceforge.net2015-02-15T09:12:58+00:00urn:sha1:53e5e0fa28d0f81be8671303ea0388da71fd20b6
Conceptually it is part of code state, so let it be allocated in the same way
as the rest of state.
py: Move to guarded includes, everywhere in py/ core.2015-01-01T20:32:09+00:00Damien Georgedamien.p.george@gmail.com2015-01-01T20:27:54+00:00urn:sha1:51dfcb4bb7613ed164952712d9a5235a7b833cde
Addresses issue #1022.
showbc: Refactor to allow inline instruction printing.2014-12-27T03:01:21+00:00Paul Sokolovskypfalcon@users.sourceforge.net2014-12-27T03:00:08+00:00urn:sha1:343266ea519927a7f1bc0a27f9c8af768d1125f7py: Reduce size of VM exception stack element by 1 machine word.2014-12-22T12:49:57+00:00Damien Georgedamien.p.george@gmail.com2014-12-22T12:49:57+00:00urn:sha1:74eb44c392449b54a3f0dcf268ee7448909f7b07
This optimisation reduces the VM exception stack element (mp_exc_stack_t)
by 1 word, by using bit 1 of a pointer to store whether the opcode was a
FINALLY or WITH opcode. This optimisation was pending, waiting for
maturity of the exception handling code, which has now proven itself.
Saves 1 machine word RAM for each exception (4->3 words per exception).
Increases stmhal code by 4 bytes, and decreases unix x64 code by 32
bytes.
py: Store bytecode arg names in bytecode (were in own array).2014-10-25T19:23:13+00:00Damien Georgedamien.p.george@gmail.com2014-10-25T14:07:02+00:00urn:sha1:1084b0f9c21b093618da4494508dec9ca8467e35
This saves a lot of RAM for 2 reasons:
1. For functions that don't have default values, var args or var kw
args (which is a large number of functions in the general case), the
mp_obj_fun_bc_t type now fits in 1 GC block (previously needed 2 because
of the extra pointer to point to the arg_names array). So this saves 16
bytes per function (32 bytes on 64-bit machines).
2. Combining separate memory regions generally saves RAM because the
unused bytes at the end of the GC block are saved for 1 of the blocks
(since that block doesn't exist on its own anymore). So generally this
saves 8 bytes per function.
Tested by importing lots of modules:
- 64-bit Linux gave about an 8% RAM saving for 86k of used RAM.
- pyboard gave about a 6% RAM saving for 31k of used RAM.
py: Change [u]int to mp_[u]int_t in qstr.[ch], and some other places.2014-10-03T18:52:22+00:00Damien Georgedamien.p.george@gmail.com2014-10-03T18:52:22+00:00urn:sha1:39dc1454788d1c6fb06c79871c7cd6e12aeb50a0
This should pretty much resolve issue #50.
py: Convert [u]int to mp_[u]int_t where appropriate.2014-10-03T17:44:14+00:00Damien Georgedamien.p.george@gmail.com2014-10-03T17:44:14+00:00urn:sha1:42f3de924bc3e285490f5f293955bc6d7e5a0edf
Addressing issue #50.
py: Use variable length encoded uints in more places in bytecode.2014-09-04T13:44:01+00:00Damien Georgedamien.p.george@gmail.com2014-09-04T13:44:01+00:00urn:sha1:b534e1b9f14c189d2cef209d40f598e62164694a
Code-info size, block name, source name, n_state and n_exc_stack now use
variable length encoded uints. This saves 7-9 bytes per bytecode
function for most functions.
py: Fix bug where GC collected native/viper/asm function data.2014-08-24T15:28:17+00:00Damien Georgedamien.p.george@gmail.com2014-08-24T15:28:17+00:00urn:sha1:3c658a4e755a75e495303957208486e583ddb270
Because (for Thumb) a function pointer has the LSB set, pointers to
dynamic functions in RAM (eg native, viper or asm functions) were not
being traced by the GC. This patch is a comprehensive fix for this.
Addresses issue #820.