risu_reginfo: introduce reginfo_size()

In preparation for conditionally supporting SVE we need to be able to
have different sized reginfos. This introduces reginfo_size() to
abstract the size away to the code the actually knows. For aarch64 we
also use this while initialising the block.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180622141205.16306-18-alex.bennee@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/risu.h b/risu.h
index 48c50d9..8d2d646 100644
--- a/risu.h
+++ b/risu.h
@@ -133,4 +133,7 @@ int reginfo_dump(struct reginfo *ri, FILE * f);
 /* reginfo_dump_mismatch: print mismatch details to a stream, ret nonzero=ok */
 int reginfo_dump_mismatch(struct reginfo *m, struct reginfo *a, FILE *f);
 
+/* return size of reginfo */
+const int reginfo_size(void);
+
 #endif /* RISU_H */