From 4a440b6f0ab7cf63ed8f19783579e037a9e5be5f Mon Sep 17 00:00:00 2001
From: ptitSeb <sebastien.chev@gmail.com>
Date: Tue, 29 Oct 2024 15:19:38 +0100
Subject: [ARM64_DYNAREC] Make sure neg on 16bits is correctly computed

---
 src/dynarec/arm64/dynarec_arm64_emit_math.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/dynarec/arm64/dynarec_arm64_emit_math.c b/src/dynarec/arm64/dynarec_arm64_emit_math.c
index 4478b1ab..b443c312 100644
--- 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));
-- 
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