target/arm: Create ARMVAParameters and helpers
Split out functions to extract the virtual address parameters.
Let the functions choose T0 or T1 address space half, if present.
Extract (most of) the control bits that vary between EL or Tx.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20190108223129.5570-19-richard.henderson@linaro.org
[PMM: fixed minor checkpatch comment nits]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/target/arm/internals.h b/target/arm/internals.h
index 248fdf7..fdda2c8 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -942,4 +942,18 @@
ARMMMUIdx arm_stage1_mmu_idx(CPUARMState *env);
#endif
+/*
+ * Parameters of a given virtual address, as extracted from the
+ * translation control register (TCR) for a given regime.
+ */
+typedef struct ARMVAParameters {
+ unsigned tsz : 8;
+ unsigned select : 1;
+ bool tbi : 1;
+ bool epd : 1;
+ bool hpd : 1;
+ bool using16k : 1;
+ bool using64k : 1;
+} ARMVAParameters;
+
#endif
