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authorRichard Henderson <richard.henderson@linaro.org>2020-10-08 11:21:54 -0500
committerPeter Maydell <peter.maydell@linaro.org>2020-10-20 16:12:00 +0100
commit50244cc76abcac3296cff3d84826f5ff71808c80 (patch)
tree405be2f634aa69ace7537ca6ef67cf1f94c526b7 /target/arm/mte_helper.c
parent4aedfc0f633fd06dd2a5dc8ffa93f4c56117e37f (diff)
downloadqemu-arm-50244cc76abcac3296cff3d84826f5ff71808c80.tar.gz
target/arm: Fix reported EL for mte_check_fail
The reporting in AArch64.TagCheckFail only depends on PSTATE.EL, and not the AccType of the operation. There are two guest visible problems that affect LDTR and STTR because of this: (1) Selecting TCF0 vs TCF1 to decide on reporting, (2) Report "data abort same el" not "data abort lower el". Reported-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Message-id: 20201008162155.161886-3-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm/mte_helper.c')
-rw-r--r--target/arm/mte_helper.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c
index 734cc5ca67..153bd1e9df 100644
--- a/target/arm/mte_helper.c
+++ b/target/arm/mte_helper.c
@@ -525,14 +525,10 @@ static void mte_check_fail(CPUARMState *env, uint32_t desc,
reg_el = regime_el(env, arm_mmu_idx);
sctlr = env->cp15.sctlr_el[reg_el];
- switch (arm_mmu_idx) {
- case ARMMMUIdx_E10_0:
- case ARMMMUIdx_E20_0:
- el = 0;
+ el = arm_current_el(env);
+ if (el == 0) {
tcf = extract64(sctlr, 38, 2);
- break;
- default:
- el = reg_el;
+ } else {
tcf = extract64(sctlr, 40, 2);
}