• Please add things that can be removed to get more vars and heap

    This is an example form JumJum to explain how a blacklist works

    exclude high math functions:

    [{"class": "E","name": "FFT"}
    ,{"class": "E","name": "convolve"}
    ,{"class": "E","name": "interpolate"}
    ,{"class": "E","name": "interpolate2d"}
    ,{"class": "E","name": "variance"}
    ]

    or peek and poke stuff

    ,{"class": "","name": "peek16"}
    ,{"class": "
    ","name": "peek32"}
    ,{"class": "","name": "peek8"}
    ,{"class": "
    ","name": "poke16"}
    ,{"class": "","name": "poke32"}
    ,{"class": "
    ","name": "poke8"}

    or

    ,{"class": "E","name": "asm"}
    ,{"class": "E","name": "compiledC"}

    or

    .......

  • The scripts/find_big_ram/rom scripts could be handy here.

    Afaik peek/poke really don't use much. Neither do asm/compiledC since they're basically placeholders and all the heavy lifting is done on the PC

    Dropping Graphics would be a big one if it's not being used.

  • The scripts/find_big_ram/rom scripts could be handy here.

    Good point - thanks

  • Just added Waveform to the blacklist like this {"class":"Waveform","name":"*"}

    compiled

    make clean && BLACKLIST=BLACKLIST.json  make
    

    and checked with

    xtensa-lx106-elf-objdump -d -l -x espruino_esp8266_user1.elf | grep -i Waveform
    

    expected no return, but got about 350 lines back.

    Any hint what goes wrong on my site?

    402714f0 l     O .irom0.text    00000018 jswSymbols_Waveform_proto
    4026c650 l     O .irom0.text    0000001d jswSymbols_Waveform_proto_str
    00000000 l    df *ABS*  00000000 jswrap_waveform.c
    40242928 l     F .irom0.text    0000006b jswrap_waveform_getBuffer
    402429c4 l     F .irom0.text    000001c5 jswrap_waveform_start
    40242d9c g     F .irom0.text    000000e6 jswrap_waveform_constructor
    40242ef0 g     F .irom0.text    0000004e jswrap_waveform_stop
    40242e84 g     F .irom0.text    00000014 jswrap_waveform_startOutput
    40242b98 g     F .irom0.text    00000168 jswrap_waveform_idle
    . . . . .
    
    /Espruino/repos/MaBecker/src/jswrap_wave­form.c:305
    4024c6ca:   d90561          l32r    a6, 40242ae0 <jswrap_waveform_start+0x11c>
    4026c650 <jswSymbols_Waveform_proto_str>:
    4026d050:   0079 6157 6576 6f66 6d72 6100 616e 6f6c     y.Waveform.analo
    4027008c:   6157 6576 6f66 6d72 6320 756f 646c 276e     Waveform couldn'
    402700ac:   6157 6576 6f66 6d72 6920 2073 6f6e 2074     Waveform is not 
    40270144:   6157 6576 6f66 6d72 6920 2073 6c61 6572     Waveform is alre
    402701d0:   6157 6576 6f66 6d72 6320 756f 646c 276e     Waveform couldn'
    
  • Wow, there are still many strings that have not been moved to flash in the ESP8266 coding sections.

  • Question: Are blacklist entries get removed from firmware during ‘make’ or just disabled?

  • I believe the blacklist entries get removed from gen/jswrapper.c (you can check that file easily) - they then won't be referenced and should be optimised out.

    But I wonder if you're compiling with RELEASE=1? If not the optimisations may not happen

  • The scripts/find_big_ram/rom scripts could be handy here.

    not output for ESP8266, but there is make topstrings and topreadonly

    But I wonder if you're compiling with RELEASE=1? If not the optimisations may not happen

    Yes, as export RELEASE=1 is a part of my default environment ;-)

    Try a simple BLACKLIST.json[{"class":"Waveform","name":"*"}]

    make clean && BLACKLIST=BLACKLIST.json make

    grep -i waveform gen/jswrapper.c

    Result:

  • see attached file


    1 Attachment

  • Maybe @JumJum could provide some ideas? the BLACKLIST.json is his addition to the build system.

    You could always check out his EFEU project and see what it writes into the blacklist file.

  • MaBe,
    there is a not fully tested change in py file, to support wildcard.
    This change is used today in efeu only.
    For now in your environment you could add all functions to blacklist instead of using wildcard

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Please name candidates for a possible BLACKLIST.json entries

Posted by Avatar for MaBe @MaBe

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