From dd0f7c1d5c5a7cf084e7ecc6aa54c758e7a79995 Mon Sep 17 00:00:00 2001
From: ptitSeb <sebastien.chev@gmail.com>
Date: Mon, 3 Jan 2022 09:33:25 +0100
Subject: [DYNAREC] Added F0 66 09 opcode (for Metro Exodus)

---
 src/dynarec/dynarec_arm64_f0.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'src')

diff --git a/src/dynarec/dynarec_arm64_f0.c b/src/dynarec/dynarec_arm64_f0.c
index c071cb39..74a471b4 100644
--- a/src/dynarec/dynarec_arm64_f0.c
+++ b/src/dynarec/dynarec_arm64_f0.c
@@ -266,6 +266,28 @@ uintptr_t dynarec64_F0(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
         case 0x66:
             opcode = F8;
             switch(opcode) {
+                case 0x09:
+                    INST_NAME("LOCK OR Ew, Gw");
+                    SETFLAGS(X_ALL, SF_SET_PENDING);
+                    nextop = F8;
+                    GETGW(x5);
+                    DMB_ISH();
+                    if(MODREG) {
+                        ed = xRAX+(nextop&7)+(rex.b<<3);
+                        UXTHw(x6, ed);
+                        emit_or16(dyn, ninst, x6, x5, x3, x4);
+                        BFIx(ed, x6, 0, 16);
+                    } else {
+                        addr = geted(dyn, addr, ninst, nextop, &wback, x2, &fixedaddress, 0, 0, rex, 0, 0);
+                        MARKLOCK;
+                        LDAXRH(x1, wback);
+                        emit_or16(dyn, ninst, x1, x5, x3, x4);
+                        STLXRH(x3, x1, wback);
+                        CBNZx_MARKLOCK(x3);
+                    }
+                    DMB_ISH();
+                    break;
+
                 case 0x81:
                 case 0x83:
                     nextop = F8;
-- 
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