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Merged
tombl merged 1 commit into from
Aug 13, 2026
Merged

wasm: move host code out of the kernel tree #53

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4 changes: 2 additions & 2 deletions arch/wasm/Makefile
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Expand Up @@ -31,9 +31,9 @@ quiet_cmd_wasm_objcopy = OBJCOPY $@
--add-section=.linux.initramfs=usr/initramfs_inc_data \
$< $@

tools/wasm/vmlinux.wasm: vmlinux.o arch/wasm/sections.json FORCE
vmlinux.wasm: vmlinux.o arch/wasm/sections.json FORCE
$(call if_changed,wasm_objcopy)

define archhelp
echo '* tools/wasm - WebAssembly host library'
echo '* vmlinux.wasm - WebAssembly kernel image'
endef
7 changes: 2 additions & 5 deletions flake.nix
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Expand Up @@ -18,8 +18,6 @@
let
pkgs = nixpkgs.legacyPackages.${system};
llvm = pkgs.llvmPackages_19;
sourceRev = self.rev or self.dirtyRev or "unknown";
npmVersion = "0.0.0-${builtins.substring 0 8 sourceRev}";
in
{
default = pkgs.stdenvNoCC.mkDerivation {
Expand All @@ -42,16 +40,15 @@
llvm.libllvm

wabt
typescript
];

HOSTCC = "${llvm.clang}/bin/clang";
KBUILD_BUILD_TIMESTAMP = "1970-01-01 00:00:00 UTC";

enableParallelBuilding = true;
configurePhase = "make HOSTCC=$HOSTCC -j$NIX_BUILD_CORES defconfig";
buildPhase = "make HOSTCC=$HOSTCC -j$NIX_BUILD_CORES -C tools/wasm PACKAGE_VERSION=${npmVersion} pack";
installPhase = "cp tools/wasm/linux.tgz $out";
buildPhase = "make HOSTCC=$HOSTCC -j$NIX_BUILD_CORES vmlinux.wasm";
installPhase = "cp vmlinux.wasm $out";
};
}
);
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8 changes: 0 additions & 8 deletions tools/wasm/.gitignore
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24 changes: 0 additions & 24 deletions tools/wasm/LICENSE
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50 changes: 0 additions & 50 deletions tools/wasm/Makefile
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25 changes: 3 additions & 22 deletions tools/wasm/README.md
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@@ -1,23 +1,4 @@
<!-- SPDX-License-Identifier: MIT -->
# WebAssembly host code

# `@tombl/linux`

`@tombl/linux` runs a Linux kernel compiled to WebAssembly and exposes low-level machine and virtio device APIs.

## Installation

```sh
npm install @tombl/linux
```

## Documentation

See [linux.tombl.dev](https://linux.tombl.dev/getting-started/).

## API

See the [`@tombl/linux` reference](https://linux.tombl.dev/reference/linux/).

## License

The TypeScript and JavaScript sources are available under the MIT license. The published package also contains `vmlinux.wasm`, which remains `GPL-2.0-only WITH Linux-syscall-note`.
The host-side code has moved to
[tombl/distro](https://github.com/tombl/distro/tree/main/packages/kernel).
34 changes: 0 additions & 34 deletions tools/wasm/package.json
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