Handle global init value encoding in Assembler

asm.js

@@ -531,8 +531,7 @@ class Parser {
             const value = this.integer(token) ?? console.error(
                 `ERROR: Unexpected token ${token} in .global: expected`
                     + " initial value");
-            const const_opcode = const_opcodes[this.global.type];
-            this.global.init = [ const_opcode, value, opcodes["end"] ];
+            this.global.init = value;
             const action = {
                 type: Action.GLOBAL,
                 global: { [this.global_name]: this.global }
@@ -1222,8 +1221,13 @@ export class Assembler {
         const globals = Object.values(this.globals);
         if (globals.length == 0)
             return null;
-        const contents = globals.map(
-            ({ type, init }) => [ type, 1, ...init ]);
+        const contents = globals.map(({ type, init }) => [
+            type,
+            1,
+            const_opcodes[type],
+            ...this.leb128(init),
+            opcodes["end"],
+        ]);
         return [ globals.length ].concat(...contents);
     }