Wasm build pipeline

6 files changed, 59 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..19e1bce
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.wasm
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..1f14348
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,6 @@
+all: build_wasm
+	cd inter; go run .
+
+build_wasm:
+	emcc hello.c  -sEXPORTED_FUNCTIONS="_Add" -o hello.wasm --no-entry
+
diff --git a/hello.c b/hello.c
new file mode 100644
index 0000000..09d79ce
--- /dev/null
+++ b/hello.c
@@ -0,0 +1,3 @@
+int Add(int a, int b) {
+    return a + b;
+}
diff --git a/inter/go.mod b/inter/go.mod
new file mode 100644
index 0000000..ec2d0ad
--- /dev/null
+++ b/inter/go.mod
@@ -0,0 +1,5 @@
+module inter
+
+go 1.25.4
+
+require github.com/tetratelabs/wazero v1.10.1 // indirect
diff --git a/inter/go.sum b/inter/go.sum
new file mode 100644
index 0000000..c3d453a
--- /dev/null
+++ b/inter/go.sum
@@ -0,0 +1,2 @@
+github.com/tetratelabs/wazero v1.10.1 h1:2DugeJf6VVk58KTPszlNfeeN8AhhpwcZqkJj2wwFuH8=
+github.com/tetratelabs/wazero v1.10.1/go.mod h1:DRm5twOQ5Gr1AoEdSi0CLjDQF1J9ZAuyqFIjl1KKfQU=
diff --git a/inter/main.go b/inter/main.go
new file mode 100644
index 0000000..e0dd0a7
--- /dev/null
+++ b/inter/main.go
@@ -0,0 +1,42 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/tetratelabs/wazero"
+	"github.com/tetratelabs/wazero/imports/wasi_snapshot_preview1"
+)
+
+const wasmLocation = "../hello.wasm"
+
+func main() {
+	var ctx = context.Background()
+
+	var runtime = wazero.NewRuntime(ctx)
+	defer runtime.Close(ctx)
+
+	wasi_snapshot_preview1.MustInstantiate(ctx, runtime)
+
+	var wasm, wasmErr = LoadWasm()
+	if wasmErr != nil {
+		panic(fmt.Sprintf("Failed to load WASM module: %s", wasmErr.Error()))
+	}
+
+	var mod, modErr = runtime.Instantiate(ctx, wasm)
+	if modErr != nil {
+		panic(fmt.Sprintf("Failed to instantiate WASM module: %s", modErr.Error()))
+	}
+
+	var add = mod.ExportedFunction("Add")
+	var result, callErr = add.Call(ctx, 25, 25)
+	if callErr != nil {
+		panic(fmt.Sprintf("Failed to call WASM finction: %s", callErr.Error()))
+	}
+	fmt.Printf("Addition result: %v\n", result[0])
+}
+
+func LoadWasm() ([]byte, error) {
+	return os.ReadFile(wasmLocation)
+}