cpu: Introduce CPUNegativeOffsetState

Nothing in there so far, but all of the plumbing done
within the target ArchCPU state.

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, 1 insertions, 0 deletions

diff --git a/target/xtensa/cpu.h b/target/xtensa/cpu.h
index e896057..e2d7e83 100644
--- a/target/xtensa/cpu.h
+++ b/target/xtensa/cpu.h
@@ -556,6 +556,7 @@ struct XtensaCPU {
     CPUState parent_obj;
     /*< public >*/
 
+    CPUNegativeOffsetState neg;
     CPUXtensaState env;
 };