diff --git a/target-arm/helper.h b/target-arm/helper.h
index 0ef8fcac17574e59071e6c67641a07645cc942fa..facfcd2c112edeede0a88987d77259d644fc6fc6 100644
--- a/target-arm/helper.h
+++ b/target-arm/helper.h
@@ -456,8 +456,6 @@ DEF_HELPER_3(iwmmxt_avgb1, i64, env, i64, i64)
 DEF_HELPER_3(iwmmxt_avgw0, i64, env, i64, i64)
 DEF_HELPER_3(iwmmxt_avgw1, i64, env, i64, i64)
 
-DEF_HELPER_2(iwmmxt_msadb, i64, i64, i64)
-
 DEF_HELPER_3(iwmmxt_align, i64, i64, i64, i32)
 DEF_HELPER_4(iwmmxt_insr, i64, i64, i32, i32, i32)
 
diff --git a/target-arm/iwmmxt_helper.c b/target-arm/iwmmxt_helper.c
index 398cbcbec7e444865dae436d228c4685f33c80bc..a5069144d19adfc76541d4100294e1e3e1dd2b19 100644
--- a/target-arm/iwmmxt_helper.c
+++ b/target-arm/iwmmxt_helper.c
@@ -369,15 +369,6 @@ IWMMXT_OP_AVGW(1)
 #undef IWMMXT_OP_AVGW
 #undef AVGW
 
-uint64_t HELPER(iwmmxt_msadb)(uint64_t a, uint64_t b)
-{
-    a =  ((((a >> 0 ) & 0xffff) * ((b >> 0) & 0xffff) +
-           ((a >> 16) & 0xffff) * ((b >> 16) & 0xffff)) & 0xffffffff) |
-         ((((a >> 32) & 0xffff) * ((b >> 32) & 0xffff) +
-           ((a >> 48) & 0xffff) * ((b >> 48) & 0xffff)) << 32);
-    return a;
-}
-
 uint64_t HELPER(iwmmxt_align)(uint64_t a, uint64_t b, uint32_t n)
 {
     a >>= n << 3;
diff --git a/target-arm/translate.c b/target-arm/translate.c
index 351943f6f3ccba1b21e2afefb8ab292596499130..cf4e767ff865204bd3e7306feaf00cb0632fc256 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -1382,8 +1382,6 @@ IWMMXT_OP_ENV(avgb1)
 IWMMXT_OP_ENV(avgw0)
 IWMMXT_OP_ENV(avgw1)
 
-IWMMXT_OP(msadb)
-
 IWMMXT_OP_ENV(packuw)
 IWMMXT_OP_ENV(packul)
 IWMMXT_OP_ENV(packuq)