From 4afd782477b5a6fe569b0cd2480f5f09b1545ef9 Mon Sep 17 00:00:00 2001
From: Fabian Meyer <3982806+meyfa@users.noreply.github.com>
Date: Sat, 28 Oct 2023 22:11:22 +0200
Subject: [PATCH] LibJIT: Fix Assembler::add(reg, reg) and sub(reg, reg)
 encoding

---
 Userland/Libraries/LibJIT/Assembler.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/Userland/Libraries/LibJIT/Assembler.h b/Userland/Libraries/LibJIT/Assembler.h
index 9414020ae96..fd3915cbe07 100644
--- a/Userland/Libraries/LibJIT/Assembler.h
+++ b/Userland/Libraries/LibJIT/Assembler.h
@@ -532,10 +532,10 @@ struct Assembler {
     {
         if (dst.type == Operand::Type::Reg && src.type == Operand::Type::Reg) {
             emit8(0x48
-                | ((to_underlying(dst.reg) >= 8) ? 1 << 2 : 0)
-                | ((to_underlying(src.reg) >= 8) ? 1 << 0 : 0));
+                | ((to_underlying(src.reg) >= 8) ? 1 << 2 : 0)
+                | ((to_underlying(dst.reg) >= 8) ? 1 << 0 : 0));
             emit8(0x01);
-            emit8(0xc0 | (encode_reg(dst.reg) << 3) | encode_reg(src.reg));
+            emit8(0xc0 | (encode_reg(src.reg) << 3) | encode_reg(dst.reg));
         } else if (dst.type == Operand::Type::Reg && src.type == Operand::Type::Imm && src.fits_in_i8()) {
             emit8(0x48 | ((to_underlying(dst.reg) >= 8) ? 1 << 0 : 0));
             emit8(0x83);
@@ -555,10 +555,10 @@ struct Assembler {
     {
         if (dst.type == Operand::Type::Reg && src.type == Operand::Type::Reg) {
             emit8(0x48
-                | ((to_underlying(dst.reg) >= 8) ? 1 << 2 : 0)
-                | ((to_underlying(src.reg) >= 8) ? 1 << 0 : 0));
+                | ((to_underlying(src.reg) >= 8) ? 1 << 2 : 0)
+                | ((to_underlying(dst.reg) >= 8) ? 1 << 0 : 0));
             emit8(0x29);
-            emit8(0xc0 | (encode_reg(dst.reg) << 3) | encode_reg(src.reg));
+            emit8(0xc0 | (encode_reg(src.reg) << 3) | encode_reg(dst.reg));
         } else if (dst.type == Operand::Type::Reg && src.type == Operand::Type::Imm && src.fits_in_i8()) {
             emit8(0x48 | ((to_underlying(dst.reg) >= 8) ? 1 << 0 : 0));
             emit8(0x83);