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[PULL,23/39] arm: force flag recalculation when messing with DAIF

Message ID 20220208113948.3217356-24-peter.maydell@linaro.org
State Accepted
Commit c737d868047f6ae91325adcd3a40f509753a1d85
Headers show
Series [PULL,01/39] target/arm: Fix sve_zcr_len_for_el for VHE mode running | expand

Commit Message

Peter Maydell Feb. 8, 2022, 11:39 a.m. UTC 
From: Alex Bennée <alex.bennee@linaro.org>

The recently introduced debug tests in kvm-unit-tests exposed an error
in our handling of singlestep cause by stale hflags. This is caught by
--enable-debug-tcg when running the tests.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reported-by: Andrew Jones <drjones@redhat.com>
Tested-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220202122353.457084-1-alex.bennee@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper-a64.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c
index d6a6fd73d96..7cf953b1e64 100644
--- a/target/arm/helper-a64.c
+++ b/target/arm/helper-a64.c
@@ -83,12 +83,14 @@  void HELPER(msr_i_daifset)(CPUARMState *env, uint32_t imm)
 {
     daif_check(env, 0x1e, imm, GETPC());
     env->daif |= (imm << 6) & PSTATE_DAIF;
+    arm_rebuild_hflags(env);
 }
 
 void HELPER(msr_i_daifclear)(CPUARMState *env, uint32_t imm)
 {
     daif_check(env, 0x1f, imm, GETPC());
     env->daif &= ~((imm << 6) & PSTATE_DAIF);
+    arm_rebuild_hflags(env);
 }
 
 /* Convert a softfloat float_relation_ (as returned by