Add a generator for the ELF executables list

As the number of ELF executables may increase over time, manually
updating the HTML ELF list becomes tedious. Therefore, an ELF list
generator has been introduced. When new ELF executables are added to
the build or build/riscv32 directories, the list will be generated
dynamically.

Close: #486

Author: ChinYikMing

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 = [
-        "riscv32/doom",
-        "smolnes.elf",
-        "riscv32/quake",
-        "riscv32/coremark",
-        "riscv32/dhrystone",
-        "riscv32/pi",
-        "riscv32/donut",
-        "riscv32/aes",
-        "coro.elf",
-        "riscv32/fcalc",
-        "riscv32/hamilton",
-        "hello.elf",
-        "ieee754.elf",
-        "jit-bf.elf",
-        "riscv32/maj2random",
-        "riscv32/mandelbrot",
-        "riscv32/nqueens",
-        "riscv32/nyancat",
-        "perfcount.elf",
-        "riscv32/qrcode",
-        "readelf.elf",
-        "riscv32/richards",
-        "riscv32/rvsim",
-        "riscv32/scimark2",
-        "riscv32/spirograph",
-        "riscv32/stream",
-      ];
-
       var runButton = document.getElementById("runButton");
       runButton.addEventListener("click", runButtonClickHandler);
 

mk/wasm.mk

@@ -34,11 +34,15 @@ CFLAGS_emcc += -sINITIAL_MEMORY=2GB \
 	       -DMEM_SIZE=0x40000000 \
 	       -DCYCLE_PER_STEP=2000000 \
 	       --pre-js $(WEB_JS_RESOURCES)/pre.js \
+	       --pre-js $(DEMO_DIR)/elf_list.js \
 	       -O3 \
 	       -w
 
+gen_elf_list_js:
+	$(Q)tools/gen-elf-list-js.py > $(DEMO_DIR)/elf_list.js
+
 # used to download all dependencies of elf executable and bundle into single wasm
-deps_emcc += $(DOOM_DATA) $(QUAKE_DATA) $(TIMIDITY_DATA)
+deps_emcc += gen_elf_list_js $(DOOM_DATA) $(QUAKE_DATA) $(TIMIDITY_DATA)
 
 # check browser MAJOR version if supports TCO
 CHROME_MAJOR :=
@@ -98,7 +102,7 @@ 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)

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()