exec: Introduce cpu_untagged_addr

Provide an identity fallback for target that do not
use tagged addresses.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210212184902.1251044-12-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h
index e62f4fb..d9dc1de 100644 (file)
--- a/include/exec/cpu_ldst.h
+++ b/include/exec/cpu_ldst.h
@@ -69,6 +69,13 @@ typedef uint64_t abi_ptr;
 #define TARGET_ABI_FMT_ptr "%"PRIx64
 #endif
 
+#ifndef TARGET_TAGGED_ADDRESSES
+static inline abi_ptr cpu_untagged_addr(CPUState *cs, abi_ptr x)
+{
+    return x;
+}
+#endif
+
 /* All direct uses of g2h and h2g need to go away for usermode softmmu.  */
 #define g2h(x) ((void *)((uintptr_t)(abi_ptr)(x) + guest_base))