diff --git a/src/wasm/wasm-emscripten.cpp b/src/wasm/wasm-emscripten.cpp
index a3433bf9f3d..3ee3e44244d 100644
--- a/src/wasm/wasm-emscripten.cpp
+++ b/src/wasm/wasm-emscripten.cpp
@@ -1042,7 +1042,23 @@ std::string EmscriptenGlueGenerator::generateEmscriptenMetadata(
   wasm.features.iterFeatures([&](FeatureSet::Feature f) {
     meta << nextElement() << "\"--enable-" << FeatureSet::toString(f) << '"';
   });
-  meta << "\n  ]\n";
+  meta << "\n  ],\n";
+
+  auto mainReadsParams = false;
+  if (auto* exp = wasm.getExportOrNull("main")) {
+    if (exp->kind == ExternalKind::Function) {
+      auto* main = wasm.getFunction(exp->value);
+      mainReadsParams = true;
+      // If main does not read its parameters, it will just be a stub that
+      // calls __original_main (which has no parameters).
+      if (auto* call = main->body->dynCast<Call>()) {
+        if (call->operands.empty()) {
+          mainReadsParams = false;
+        }
+      }
+    }
+  }
+  meta << "  \"mainReadsParams\": " << int(mainReadsParams) << '\n';
 
   meta << "}\n";
 
diff --git a/test/lld/duplicate_imports.wast.out b/test/lld/duplicate_imports.wast.out
index 7aebdca5060..32336571133 100644
--- a/test/lld/duplicate_imports.wast.out
+++ b/test/lld/duplicate_imports.wast.out
@@ -115,7 +115,8 @@
     "invoke_ffd"
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 1
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/em_asm.wast.mem.out b/test/lld/em_asm.wast.mem.out
index 90b3560ce47..13d289f46b7 100644
--- a/test/lld/em_asm.wast.mem.out
+++ b/test/lld/em_asm.wast.mem.out
@@ -262,7 +262,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 0
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/em_asm.wast.out b/test/lld/em_asm.wast.out
index 6cb47ac932b..f0c38792d56 100644
--- a/test/lld/em_asm.wast.out
+++ b/test/lld/em_asm.wast.out
@@ -263,7 +263,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 0
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/em_asm_O0.wast.out b/test/lld/em_asm_O0.wast.out
index 2426f382930..10c293a0be1 100644
--- a/test/lld/em_asm_O0.wast.out
+++ b/test/lld/em_asm_O0.wast.out
@@ -123,7 +123,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 1
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/em_asm_shared.wast.out b/test/lld/em_asm_shared.wast.out
index a76906028b9..5b984f7ae34 100644
--- a/test/lld/em_asm_shared.wast.out
+++ b/test/lld/em_asm_shared.wast.out
@@ -244,7 +244,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 0
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/em_asm_table.wast.out b/test/lld/em_asm_table.wast.out
index ed821cd186c..48d02d2088c 100644
--- a/test/lld/em_asm_table.wast.out
+++ b/test/lld/em_asm_table.wast.out
@@ -93,7 +93,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 0
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/em_js_O0.wast.out b/test/lld/em_js_O0.wast.out
index fb647ffdee2..6e141975d25 100644
--- a/test/lld/em_js_O0.wast.out
+++ b/test/lld/em_js_O0.wast.out
@@ -73,7 +73,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 0
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/hello_world.passive.wast.out b/test/lld/hello_world.passive.wast.out
index 88a06c1f3bd..6c9fd4ef7dc 100644
--- a/test/lld/hello_world.passive.wast.out
+++ b/test/lld/hello_world.passive.wast.out
@@ -105,7 +105,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 0
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/hello_world.wast.mem.out b/test/lld/hello_world.wast.mem.out
index 49a44177274..c8891f6d9bb 100644
--- a/test/lld/hello_world.wast.mem.out
+++ b/test/lld/hello_world.wast.mem.out
@@ -97,7 +97,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 0
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/hello_world.wast.out b/test/lld/hello_world.wast.out
index 6b2870e147f..9e01def2062 100644
--- a/test/lld/hello_world.wast.out
+++ b/test/lld/hello_world.wast.out
@@ -98,7 +98,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 0
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/init.wast.out b/test/lld/init.wast.out
index fc95468e08a..273e0d6aa02 100644
--- a/test/lld/init.wast.out
+++ b/test/lld/init.wast.out
@@ -110,7 +110,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 0
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/recursive.wast.out b/test/lld/recursive.wast.out
index a7c7bd85c6d..24868211d6e 100644
--- a/test/lld/recursive.wast.out
+++ b/test/lld/recursive.wast.out
@@ -155,7 +155,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 0
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/reserved_func_ptr.wast.out b/test/lld/reserved_func_ptr.wast.out
index a05faf2b935..613802f6ab8 100644
--- a/test/lld/reserved_func_ptr.wast.out
+++ b/test/lld/reserved_func_ptr.wast.out
@@ -192,7 +192,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 1
 }
 -- END METADATA --
 ;)
diff --git a/test/lld/shared.wast.out b/test/lld/shared.wast.out
index 1e2ab04eb16..4931092d65b 100644
--- a/test/lld/shared.wast.out
+++ b/test/lld/shared.wast.out
@@ -124,7 +124,8 @@
   "invokeFuncs": [
   ],
   "features": [
-  ]
+  ],
+  "mainReadsParams": 0
 }
 -- END METADATA --
 ;)