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New polkawasm target release 0.28.1 #14

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New polkawasm target release 0.28.1 #14

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radkomih
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@radkomih radkomih commented Jul 14, 2023 •
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🎯 New polkawasm target, targeting standalone Wasm MVP, similar to Rust's wasm32-unknown-unknown, but also incorporating custom GC that utilizes an external allocator. Based on Tinygo 0.28.1.

  • add custom Dockerfile and build script (with pre-build llvm)
  • add target implementation separate from the existing wasm/wasi
  • allow undefined (custom exported functions)
  • export globals and tables (__heap_base, __data_end)
  • import memory
  • change stack placement(no need, for now)
  • disable the scheduler (remove the support of goroutines and channels)
  • use wasi-libc with bulk memory ops disabled wasi-libc pr instead of providing own implementation. Not using -opt=0 drops the size significantly, ~400KB
  • remove _start export (not supported from the host and not required with the custom extalloc gc)
  • remove wasm-libc exported allocation functions
  • add custom gc implementations
    • one that allocates memory through an external allocator, but it is not freed from the gc
    • second one (WIP), both allocates and frees memory through the external allocator
  • add tests for the polkawasm target + the custom gc

⚠️ Issue(s):
Check gosemble pr

@radkomih radkomih self-assigned this Jul 14, 2023
@radkomih radkomih added this to the Phase 2 - M0 - TinyGo milestone Jul 14, 2023
@radkomih radkomih mentioned this pull request Jul 14, 2023
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github-actions bot commented Jul 14, 2023 •
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Size difference with the dev branch:

Binary size difference 
not the same command!
    go: downloading golang.org/x/text v0.3.6
    tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/ntpclient/main.go
not the same command!
    go: downloading github.com/eclipse/paho.mqtt.golang v1.2.0
    tinygo build -size short -o ./build/test.hex -target=wioterminal ./examples/rtl8720dn/mqttsub/
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  98640   98640      0   0.00%  go: downloading github.com/eclipse/paho.mqtt.golang v1.2.0
  60360   60360      0   0.00%  tinygo build -size short -o ./build/test.hex -target=feather-m4 ./examples/i2csoft/adt7410/
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3468938 3468938      0   0.00%   sum

@radkomih radkomih force-pushed the new-polkawasm-target-release-0.28.1-fix branch 5 times, most recently from 93c819b to 58c5245 Compare July 26, 2023 10:54
@radkomih radkomih force-pushed the new-polkawasm-target-release-0.28.1-fix branch from 58c5245 to d5d65e5 Compare July 26, 2023 11:18
@radkomih radkomih removed this from the Phase 2 - M0 - TinyGo milestone Aug 2, 2023
@radkomih radkomih mentioned this pull request Aug 2, 2023
Closed
@radkomih radkomih closed this Nov 29, 2023
@radkomih radkomih deleted the new-polkawasm-target-release-0.28.1-fix branch December 1, 2023 08:16
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@radkomih @failfmi