[PATCH 4/4] target/tricore: Fix helper_ret() not correctly restoring PSW

[Bastian Koppelmann <kbastian@mail.uni-paderborn.de>]

We are always taking the TRICORE_FEATURE_13 branch as every CPU has TRICORE_FEATURE_13.
For CPUs with ISA > 1.3 we have to take the else branch.

We fix this by inverting the condition. We check for
TRICORE_FEATURE_131, which every CPU except TRICORE_FEATURE_13 CPUs
have.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1700
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
---
 target/tricore/op_helper.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/target/tricore/op_helper.c b/target/tricore/op_helper.c
index d3c836ecd9..cbc46b2a5f 100644
--- a/target/tricore/op_helper.c
+++ b/target/tricore/op_helper.c
@@ -2532,12 +2532,12 @@ void helper_ret(CPUTriCoreState *env)
     /* PCXI = new_PCXI; */
     env->PCXI = new_PCXI;
 
-    if (tricore_feature(env, TRICORE_FEATURE_13)) {
-        /* PSW = new_PSW */
-        psw_write(env, new_PSW);
-    } else {
+    if (tricore_feature(env, TRICORE_FEATURE_131)) {
         /* PSW = {new_PSW[31:26], PSW[25:24], new_PSW[23:0]}; */
         psw_write(env, (new_PSW & ~(0x3000000)) + (psw & (0x3000000)));
+    } else { /* TRICORE_FEATURE_13 only */
+        /* PSW = new_PSW */
+        psw_write(env, new_PSW);
     }
 }
 
-- 
2.40.1