[ARM64_DYNAREC] Make sure neg on 16bits is correctly computed

ptitSeb · Oct 29, 2024 · 4a440b6 · 4a440b6
1 parent fdfc5c4
commit 4a440b6
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/dynarec/arm64/dynarec_arm64_emit_math.c b/src/dynarec/arm64/dynarec_arm64_emit_math.c
@@ -1726,10 +1726,11 @@ void emit_neg16(dynarec_arm_t* dyn, int ninst, int s1, int s3, int s4)
     IFX(X_AF|X_OF) {
         MOVw_REG(s3, s1);
     }
+    NEGw_REG(s1, s1);
     IFX(X_ZF) {
-        NEGSw_REG(s1, s1);
+        ANDSw_mask(s1, s1, 0, 15);  //mask=0xffff
     } else {
-        NEGw_REG(s1, s1);
+        ANDw_mask(s1, s1, 0, 15);   //mask=0xffff
     }
     IFX(X_PEND) {
         STRH_U12(s1, xEmu, offsetof(x64emu_t, res));