target-arm: introduce tbflag for endianness

Introduce a tbflags for endianness, set based upon the CPUs current
endianness. This in turn propagates through to the disas endianness
flag.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index cbf171cc23..279c91fefd 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -1985,6 +1985,8 @@ static inline bool arm_cpu_data_is_big_endian(CPUARMState *env)
  */
 #define ARM_TBFLAG_NS_SHIFT         19
 #define ARM_TBFLAG_NS_MASK          (1 << ARM_TBFLAG_NS_SHIFT)
+#define ARM_TBFLAG_BE_DATA_SHIFT    20
+#define ARM_TBFLAG_BE_DATA_MASK     (1 << ARM_TBFLAG_BE_DATA_SHIFT)
 
 /* Bit usage when in AArch64 state: currently we have no A64 specific bits */
 
@@ -2015,6 +2017,8 @@ static inline bool arm_cpu_data_is_big_endian(CPUARMState *env)
     (((F) & ARM_TBFLAG_XSCALE_CPAR_MASK) >> ARM_TBFLAG_XSCALE_CPAR_SHIFT)
 #define ARM_TBFLAG_NS(F) \
     (((F) & ARM_TBFLAG_NS_MASK) >> ARM_TBFLAG_NS_SHIFT)
+#define ARM_TBFLAG_BE_DATA(F) \
+    (((F) & ARM_TBFLAG_BE_DATA_MASK) >> ARM_TBFLAG_BE_DATA_SHIFT)
 
 static inline bool bswap_code(bool sctlr_b)
 {
@@ -2157,6 +2161,9 @@ static inline void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
             }
         }
     }
+    if (arm_cpu_data_is_big_endian(env)) {
+        *flags |= ARM_TBFLAG_BE_DATA_MASK;
+    }
     *flags |= fp_exception_el(env) << ARM_TBFLAG_FPEXC_EL_SHIFT;
 
     *cs_base = 0;