evan
1473b7ab10
Runs authoritative TCI first, snapshots its result, rewinds guest state, runs the compiled TB as a disposable shadow, compares GPRs/DRAM, then restores TCI. Opt-in via wasm_diff_enable(); normal execution unchanged. Valid comparison required restoring all state a single TB can touch: - full CPUNegativeOffsetState (the env-8 interrupt check sits before env) - deep CPUTLB.f[].table / d[].fulltlb per MMU mode - and skipping async cpu_exit() force-exit races. Only side-effect-safe candidates compared (store TB, no general helper). Result: 160k+ store-TB comparisons during reader-open, zero divergence. Per-TB store codegen is exonerated; corruption is emergent across TBs.
xteink QEMU fork
Espressif's QEMU fork carrying the xteink X3/X4 (ESP32-C3) machine model and a wasm32 TCG backend (ported from ktock/qemu-wasm), used by xteink-web-emulator to run CrossPoint firmware in the browser.
Branch
main— the working branch. Base is Espressif'sesp-develop-9.2.2-20260417(40edccac).
Remotes
origin— https://ssh.gitea.va.reichard.io/evan/qemu-xteinkupstream— https://github.com/espressif/qemuqemu-wasm— https://github.com/ktock/qemu-wasm (source of the wasm32 backend)
Building
Native (parity check — authoritative)
nix develop
./configure --target-list=riscv32-softmmu --with-devices-riscv32=xteink --enable-gcrypt
ninja -C build qemu-system-riscv32
WebAssembly
Driven by the parent repo, not here:
cd ../xteink-web-emulator
make web-dev # incremental build straight from this tree
The parent's scripts/build-qemu-wasm.sh compiles this checkout inside the
emsdk Docker image defined in xteink-web-emulator/qemu/wasm/Dockerfile.