From cc8ae742f01f70d1950cc0aed81414731c14b343 Mon Sep 17 00:00:00 2001
From: Camden Dixie O'Brien <cdo@wip.sh>
Date: Thu, 19 Mar 2026 22:01:33 +0000
Subject: [PATCH] Add more opcodes to assembler

---
 asm.js | 90 ++++++++++++++++++++++++++++++----------------------------
 1 file changed, 47 insertions(+), 43 deletions(-)

diff --git a/asm.js b/asm.js
index 1b4f60a..b50d741 100644
--- a/asm.js
+++ b/asm.js
@@ -144,49 +144,52 @@ const types = {
 };
 
 const opcodes = {
-    "block":         0x02,
-    "loop":          0x03,
-    "if":            0x04,
-    "else":          0x05,
-    "end":           0x0b,
-    "br":            0x0c,
-    "br_if":         0x0d,
-    "call":          0x10,
-    "call_indirect": 0x11,
-    "drop":          0x0a,
-    "local.get":     0x20,
-    "local.set":     0x21,
-    "local.tee":     0x22,
-    "global.get":    0x23,
-    "global.set":    0x24,
-    "i32.load":      0x28,
-    "i32.load8_u":   0x2d,
-    "i32.store":     0x36,
-    "i32.store8":    0x3a,
-    "i32.const":     0x41,
-    "i64.const":     0x42,
-    "i32.eqz":       0x45,
-    "i32.eq":        0x46,
-    "i32.ne":        0x47,
-    "i32.lt_s":      0x48,
-    "i32.lt_u":      0x49,
-    "i32.gt_s":      0x4a,
-    "i32.gt_u":      0x4b,
-    "i32.le_s":      0x4c,
-    "i32.le_u":      0x4d,
-    "i32.ge_s":      0x4e,
-    "i32.ge_u":      0x4f,
-    "i32.add":       0x6a,
-    "i32.sub":       0x6b,
-    "i32.mul":       0x6c,
-	"i32.div_s":     0x6d,
-	"i32.rem_s":     0x6f,
-    "i32.and":       0x71,
-    "i32.or":        0x72,
-    "i32.xor":       0x73,
-    "i32.shl":       0x74,
-    "i32.shr_s":     0x75,
-    "i32.shr_u":     0x76,
+    "block":            0x02,
+    "loop":             0x03,
+    "if":               0x04,
+    "else":             0x05,
+    "end":              0x0b,
+    "br":               0x0c,
+    "br_if":            0x0d,
+    "call":             0x10,
+    "call_indirect":    0x11,
+    "drop":             0x0a,
+    "local.get":        0x20,
+    "local.set":        0x21,
+    "local.tee":        0x22,
+    "global.get":       0x23,
+    "global.set":       0x24,
+    "i32.load":         0x28,
+    "i32.load8_u":      0x2d,
+    "i32.store":        0x36,
+    "i32.store8":       0x3a,
+    "i32.const":        0x41,
+    "i64.const":        0x42,
+    "i32.eqz":          0x45,
+    "i32.eq":           0x46,
+    "i32.ne":           0x47,
+    "i32.lt_s":         0x48,
+    "i32.lt_u":         0x49,
+    "i32.gt_s":         0x4a,
+    "i32.gt_u":         0x4b,
+    "i32.le_s":         0x4c,
+    "i32.le_u":         0x4d,
+    "i32.ge_s":         0x4e,
+    "i32.ge_u":         0x4f,
+    "i32.add":          0x6a,
+    "i32.sub":          0x6b,
+    "i32.mul":          0x6c,
+	"i32.div_s":        0x6d,
+	"i32.rem_s":        0x6f,
+    "i32.and":          0x71,
+    "i32.or":           0x72,
+    "i32.xor":          0x73,
+    "i32.shl":          0x74,
+    "i32.shr_s":        0x75,
+    "i32.shr_u":        0x76,
+    "i64.or":           0x84,
+    "i64.shl":          0x86,
+    "i64.extend_i32_u": 0xad,
 
     // Threads instructions
     "memory.atomic.notify": [ 0xfe, 0x00 ],
@@ -194,6 +197,7 @@ const opcodes = {
     "i32.atomic.load":      [ 0xfe, 0x10 ],
     "i32.atomic.load8_u":   [ 0xfe, 0x12 ],
     "i32.atomic.store":     [ 0xfe, 0x17 ],
+    "i64.atomic.store":     [ 0xfe, 0x18 ],
     "i32.atomic.store8":    [ 0xfe, 0x19 ],
 };