[ARM64] Fixed OF calculation of 8/16bit RCR opcodes

ptitSeb · Jan 16, 2025 · 237290f · 237290f
1 parent 166c485
commit 237290f
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/dynarec/arm64/dynarec_arm64_emit_shift.c b/src/dynarec/arm64/dynarec_arm64_emit_shift.c
@@ -1095,7 +1095,8 @@ void emit_rcr8c(dynarec_arm_t* dyn, int ninst, int s1, uint32_t c, int s3, int s
     LSRw_IMM(s1, s1, c); // do the rcr
     IFX(X_OF) {
         if(c==1) {
-            EORw_REG_LSR(s3, s3, s1, 7);
+            LSRw(s3, s1, 6);
+            EORw_REG_LSR(s3, s3, s3, 1);
             BFIw(xFlags, s3, F_OF, 1);
         } else if(box64_dynarec_test) {
             BFCw(xFlags, F_OF, 1);
@@ -1159,7 +1160,8 @@ void emit_rcr16c(dynarec_arm_t* dyn, int ninst, int s1, uint32_t c, int s3, int
     LSRx_IMM(s1, s1, c); // do the rcr
     IFX(X_OF) {
         if(c==1) {
-            EORw_REG_LSR(s3, s3, s1, 15);
+            LSRw(s3, s1, 14);
+            EORw_REG_LSR(s3, s3, s3, 1);
             BFIw(xFlags, s3, F_OF, 1);
         } else if(box64_dynarec_test) {
             BFCw(xFlags, F_OF, 1);