From 207f829066d08556b46e22da85d6420ba377e9f2 Mon Sep 17 00:00:00 2001
From: ptitSeb <sebastien.chev@gmail.com>
Date: Thu, 25 Mar 2021 15:39:19 +0100
Subject: [DYNAREC] Added 86 opcode

---
 src/dynarec/dynarec_arm64_00.c | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/dynarec/dynarec_arm64_00.c b/src/dynarec/dynarec_arm64_00.c
index 6c690a54..845703f4 100755
--- a/src/dynarec/dynarec_arm64_00.c
+++ b/src/dynarec/dynarec_arm64_00.c
@@ -820,7 +820,37 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
             GETED(0);
             emit_test32(dyn, ninst, rex, ed, gd, x3, x5);
             break;
-
+        case 0x86:
+            INST_NAME("(LOCK)XCHG Eb, Gb");
+            // Do the swap
+            nextop = F8;
+            if(MODREG) {
+                GETGB(x4);
+                if(rex.rex) {
+                    ed = xRAX+(nextop&7)+(rex.b<<3);
+                    eb1 = ed;
+                    eb2 = 0;
+                } else {
+                    ed = (nextop&7);
+                    eb1 = xRAX+(ed&3);
+                    eb2 = ((ed&4)>>2);
+                }
+                UBFXw(x1, eb1, eb2*8, 8);
+                // do the swap 14 -> ed, 1 -> gd
+                BFIx(gb1, x1, gb2*8, 8);
+                BFIx(eb1, x4, eb2*8, 8);
+            } else {
+                GETGB(x4);
+                addr = geted(dyn, addr, ninst, nextop, &ed, x2, &fixedaddress, 0, 0, rex, 0, 0);
+                MARKLOCK;
+                // do the swap with exclusive locking
+                LDAXRB(x1, ed);
+                // do the swap 14 -> strb(ed), 1 -> gd
+                STLXRB(x3, x4, ed);
+                CBNZx_MARKLOCK(x3);
+                BFIx(gb1, x1, gb2*8, 8);
+            }
+            break;
         case 0x87:
             INST_NAME("(LOCK)XCHG Ed, Gd");
             nextop = F8;
-- 
cgit 1.4.1