cpu: Move the softmmu tlb to CPUNegativeOffsetState

We have for some time had code within the tcg backends to
handle large positive offsets from env.  This move makes
sure that need not happen.  Indeed, we are able to assert
at build time that simple offsets suffice for all hosts.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h
index 253dd1d9a5..f4fed7d82e 100644
--- a/include/exec/cpu-all.h
+++ b/include/exec/cpu-all.h
@@ -429,4 +429,15 @@ static inline CPUNegativeOffsetState *cpu_neg(CPUState *cpu)
     return &arch_cpu->neg;
 }
 
+/**
+ * env_tlb(env)
+ * @env: The architecture environment
+ *
+ * Return the CPUTLB state associated with the environment.
+ */
+static inline CPUTLB *env_tlb(CPUArchState *env)
+{
+    return &env_neg(env)->tlb;
+}
+
 #endif /* CPU_ALL_H */