diff --git a/assets/html/index.html b/assets/html/index.html
index 163213f4..5beae7e6 100644
--- a/assets/html/index.html
+++ b/assets/html/index.html
@@ -130,40 +130,11 @@
     </div>
     <textarea id="output" rows="8"></textarea>
 
+    <script src="elf_list.js"></script>
     <script type='text/javascript'>
       var statusElement = document.getElementById('status');
       var progressElement = document.getElementById('progress');
       var spinnerElement = document.getElementById('spinner');
-
-      var elfFiles = [
-        "doom.elf",
-        "smolnes.elf",
-        "quake.elf",
-        "coremark.elf",
-        "dhrystone.elf",
-        "pi.elf",
-        "donut.elf",
-        "aes.elf",
-        "coro.elf",
-        "fcalc.elf",
-        "hamilton.elf",
-        "hello.elf",
-        "ieee754.elf",
-        "jit-bf.elf",
-        "maj2random.elf",
-        "mandelbrot.elf",
-        "nqueens.elf",
-        "nyancat.elf",
-        "perfcount.elf",
-        "qrcode.elf",
-        "readelf.elf",
-        "richards.elf",
-        "rvsim.elf",
-        "scimark2.elf",
-        "spirograph.elf",
-        "stream.elf",
-      ];
-
       var runButton = document.getElementById("runButton");
       runButton.addEventListener("click", runButtonClickHandler);
 
diff --git a/mk/wasm.mk b/mk/wasm.mk
index b1327da5..33af42a5 100644
--- a/mk/wasm.mk
+++ b/mk/wasm.mk
@@ -1,14 +1,15 @@
 CFLAGS_emcc ?=
-deps_emcc :=
+deps_emcc := artifact
 ASSETS := assets
 WEB_HTML_RESOURCES := $(ASSETS)/html
 WEB_JS_RESOURCES := $(ASSETS)/js
 EXPORTED_FUNCS := _main,_indirect_rv_halt
-
-ifeq ("$(CC_IS_EMCC)", "1")
+DEMO_DIR := demo
 WEB_FILES := $(BIN).js \
 	     $(BIN).wasm \
 	     $(BIN).worker.js
+
+ifeq ("$(CC_IS_EMCC)", "1")
 BIN := $(BIN).js
 
 # TCO
@@ -28,6 +29,7 @@ CFLAGS_emcc += -sINITIAL_MEMORY=2GB \
 	       -sSTACK_SIZE=4MB \
 	       -sPTHREAD_POOL_SIZE=navigator.hardwareConcurrency \
 	       --embed-file build@/ \
+	       --embed-file build/riscv32@/riscv32 \
 	       --embed-file build/timidity@/etc/timidity \
 	       -DMEM_SIZE=0x40000000 \
 	       -DCYCLE_PER_STEP=2000000 \
@@ -35,8 +37,11 @@ CFLAGS_emcc += -sINITIAL_MEMORY=2GB \
 	       -O3 \
 	       -w
 
+$(DEMO_DIR)/elf_list.js: tools/gen-elf-list-js.py
+	$(Q)tools/gen-elf-list-js.py > $@
+
 # used to download all dependencies of elf executable and bundle into single wasm
-deps_emcc += $(DOOM_DATA) $(QUAKE_DATA) $(TIMIDITY_DATA)
+deps_emcc += $(DEMO_DIR)/elf_list.js $(DOOM_DATA) $(QUAKE_DATA) $(TIMIDITY_DATA)
 
 # check browser MAJOR version if supports TCO
 CHROME_MAJOR :=
@@ -77,7 +82,6 @@ else
 endif
 
 # used to serve wasm locally
-DEMO_DIR := demo
 DEMO_IP := 127.0.0.1
 DEMO_PORT := 8000
 
@@ -97,7 +101,7 @@ endef
 STATIC_WEB_FILES := $(WEB_HTML_RESOURCES)/index.html \
 		    $(WEB_JS_RESOURCES)/coi-serviceworker.min.js
 
-start-web: $(BIN) check-demo-dir-exist
+start-web: check-demo-dir-exist $(BIN)
 	$(foreach T, $(WEB_FILES), $(call cp-web-file, $(T)))
 	$(foreach T, $(STATIC_WEB_FILES), $(call cp-web-file, $(T)))
 	$(Q)python3 -m http.server --bind $(DEMO_IP) $(DEMO_PORT) --directory $(DEMO_DIR)
diff --git a/tools/gen-elf-list-js.py b/tools/gen-elf-list-js.py
new file mode 100755
index 00000000..05e082a1
--- /dev/null
+++ b/tools/gen-elf-list-js.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+
+import os
+
+def list_files(d):
+    try:
+        if d == "build":
+            files = [f for f in os.listdir(d) if (os.path.isfile(os.path.join(d, f)) and f.endswith('.elf'))]
+        else:
+            parent_dir = os.path.dirname(d)
+            files = [
+                os.path.relpath(os.path.join(d, f), start=parent_dir)
+                for f in os.listdir(d)
+                if os.path.isfile(os.path.join(d, f))
+            ]
+        return files
+    except FileNotFoundError:
+        print(f"Directory {directory} not found.")
+        return []
+
+elf_exec_dirs = ["build", "build/riscv32"]
+elf_exec_list = []
+
+for d in elf_exec_dirs:
+    files = list_files(d)
+    elf_exec_list.extend(files)
+#print(elf_exec_list)
+
+def gen_elf_list_js():
+    js_code = f"const elfFiles = {elf_exec_list};\n"
+    print(js_code)
+
+gen_elf_list_js()