[qemu-s390x] [PATCH v2 4/7] s390x/tcg: Factor out vec_full_reg_offset()

[David Hildenbrand]

We'll use that a lot along with gvec helpers, to calculate the start
address of a vector.

Reviewed-by: Thomas Huth <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
Signed-off-by: David Hildenbrand <address@hidden>
---
 target/s390x/translate.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index 5e3955e4d7..6d36cfed2a 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -145,13 +145,18 @@ void s390x_translate_init(void)
     }
 }
 
+static inline int vec_full_reg_offset(uint8_t reg)
+{
+    g_assert(reg < 32);
+    return offsetof(CPUS390XState, vregs[reg][0].d);
+}
+
 static inline int vec_reg_offset(uint8_t reg, uint8_t enr, TCGMemOp es)
 {
     /* Convert element size (es) - e.g. MO_U8 - to bytes */
     const uint8_t bytes = 1 << es;
     int offs = enr * bytes;
 
-    g_assert(reg < 32);
     /*
      * vregs[n][0] is the lowest 8 byte and vregs[n][1] the highest 8 byte
      * of the 16 byte vector, on both, little and big endian systems.
@@ -178,7 +183,7 @@ static inline int vec_reg_offset(uint8_t reg, uint8_t enr, 
TCGMemOp es)
 #ifndef HOST_WORDS_BIGENDIAN
     offs ^= (8 - bytes);
 #endif
-    return offs + offsetof(CPUS390XState, vregs[reg][0].d);
+    return offs + vec_full_reg_offset(reg);
 }
 
 static inline int freg64_offset(uint8_t reg)
-- 
2.17.2