Implement the AArch32 ATS1H* operations which perform
Hyp mode stage 1 translations.
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
---
target-arm/helper.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/target-arm/helper.c b/target-arm/helper.c
index 67d108e..b9ce965 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -1607,6 +1607,17 @@ static void ats_write(CPUARMState *env, const
ARMCPRegInfo *ri, uint64_t value)
A32_BANKED_CURRENT_REG_SET(env, par, par64);
}
+static void ats1h_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ int access_type = ri->opc2 & 1;
+ uint64_t par64;
+
+ par64 = do_ats_write(env, value, access_type, ARMMMUIdx_S2NS);
+
+ A32_BANKED_CURRENT_REG_SET(env, par, par64);
+}
+
static CPAccessResult at_s1e2_access(CPUARMState *env, const ARMCPRegInfo *ri)
{
if (arm_current_el(env) == 3 && !(env->cp15.scr_el3 & SCR_NS)) {
@@ -2770,6 +2781,17 @@ static const ARMCPRegInfo el2_cp_reginfo[] = {
.opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 1,
.access = PL2_W, .accessfn = at_s1e2_access,
.type = ARM_CP_NO_RAW, .writefn = ats_write64 },
+ /* The AArch32 ATS1H* operations are CONSTRAINED UNPREDICTABLE
+ * if EL2 is not implemented; we choose to UNDEF. Behaviour at EL3
+ * with SCR.NS == 0 outside Monitor mode is UNPREDICTABLE; we choose
+ * to behave as if SCR.NS was 1.
+ */
+ { .name = "ATS1HR", .cp = 15, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 0,
+ .access = PL2_W,
+ .writefn = ats1h_write, .type = ARM_CP_NO_RAW },
+ { .name = "ATS1HW", .cp = 15, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 1,
+ .access = PL2_W,
+ .writefn = ats1h_write, .type = ARM_CP_NO_RAW },
#endif
REGINFO_SENTINEL
};
--
1.9.1
