Wasm -> goHEADmaster

3 files changed, 19 insertions, 3 deletions

diff --git a/Makefile b/Makefile
index 1f14348..496a2f2 100644
--- a/Makefile
+++ b/Makefile
@@ -2,5 +2,4 @@ all: build_wasm
 	cd inter; go run .
 
 build_wasm:
-	emcc hello.c  -sEXPORTED_FUNCTIONS="_Add" -o hello.wasm --no-entry
-
+	emcc c_wasm/hello.c -sEXPORTED_FUNCTIONS="_Add" -s ERROR_ON_UNDEFINED_SYMBOLS=0 -o hello.wasm --no-entry 
diff --git a/hello.c b/c_wasm/hello.c
index 09d79ce..696b1fb 100644
--- a/hello.c
+++ b/c_wasm/hello.c
@@ -1,3 +1,6 @@
+extern void xdx();
+
 int Add(int a, int b) {
+    xdx();
     return a + b;
 }
diff --git a/inter/main.go b/inter/main.go
index e0dd0a7..ee0d463 100644
--- a/inter/main.go
+++ b/inter/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"fmt"
+	"log"
 	"os"
 
 	"github.com/tetratelabs/wazero"
@@ -17,6 +18,15 @@ func main() {
 	var runtime = wazero.NewRuntime(ctx)
 	defer runtime.Close(ctx)
 
+	var _, hostErr = runtime.NewHostModuleBuilder("env").
+		NewFunctionBuilder().
+		WithFunc(xdx).
+		Export("xdx").
+		Instantiate(ctx);
+	if hostErr != nil {
+		panic(fmt.Sprintf("Failed to create host module: %s", hostErr.Error()))
+	}
+
 	wasi_snapshot_preview1.MustInstantiate(ctx, runtime)
 
 	var wasm, wasmErr = LoadWasm()
@@ -30,7 +40,7 @@ func main() {
 	}
 
 	var add = mod.ExportedFunction("Add")
-	var result, callErr = add.Call(ctx, 25, 25)
+	var result, callErr = add.Call(ctx, 9, 10)
 	if callErr != nil {
 		panic(fmt.Sprintf("Failed to call WASM finction: %s", callErr.Error()))
 	}
@@ -40,3 +50,7 @@ func main() {
 func LoadWasm() ([]byte, error) {
 	return os.ReadFile(wasmLocation)
 }
+
+func xdx() {
+	log.Printf("xdx (called from WASM)")
+}