From: Richard Henderson <richard.henderson@linaro.org>
Date: Fri, 26 Jun 2020 03:31:38 +0000 (-0700)
Subject: target/arm: Set PSTATE.TCO on exception entry
X-Git-Tag: v5.1.0-rc0~45^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=34669338bd9d66255fceaa84c314251ca49ca8d5;p=thirdparty%2Fqemu.git

target/arm: Set PSTATE.TCO on exception entry

D1.10 specifies that exception handlers begin with tag checks overridden.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200626033144.790098-41-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---

diff --git a/target/arm/helper.c b/target/arm/helper.c
index 23cf44fcf42..d220612a201 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -9704,6 +9704,9 @@ static void arm_cpu_do_interrupt_aarch64(CPUState *cs)
             break;
         }
     }
+    if (cpu_isar_feature(aa64_mte, cpu)) {
+        new_mode |= PSTATE_TCO;
+    }
 
     pstate_write(env, PSTATE_DAIF | new_mode);
     env->aarch64 = 1;