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-rwxr-xr-xsrc/dynarec/dynarec_arm64_f30f.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/dynarec/dynarec_arm64_f30f.c b/src/dynarec/dynarec_arm64_f30f.c
index b8479d5c..8c87b790 100755
--- a/src/dynarec/dynarec_arm64_f30f.c
+++ b/src/dynarec/dynarec_arm64_f30f.c
@@ -363,6 +363,20 @@ uintptr_t dynarec64_F30F(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int n
             CSETw(x1, cEQ);

             BFIw(xFlags, x1, F_ZF, 1);  // ZF = is dest 0?

             break;

+        case 0xBD:

+            INST_NAME("LZCNT Gd, Ed");

+            SETFLAGS(X_CF|X_ZF, SF_SUBSET);

+            SET_DFNONE(x1);

+            nextop = F8;

+            GETED(0);

+            GETGD;

+            TSTxw_REG(ed, ed);

+            BFIw(xFlags, x1, F_CF, 1);  // CF = is source 0?

+            CLZxw(gd, x1);    // x2 gets leading 0 == LZCNT

+            TSTxw_REG(gd, gd);

+            CSETw(x1, cEQ);

+            BFIw(xFlags, x1, F_ZF, 1);  // ZF = is dest 0?

+            break;

 

         case 0xC2:

             INST_NAME("CMPSS Gx, Ex, Ib");