diff --git a/target/hppa/insns.decode b/target/hppa/insns.decode
index 71074a64c1..527c453443 100644
--- a/target/hppa/insns.decode
+++ b/target/hppa/insns.decode
@@ -646,8 +646,6 @@ xmpyu           001110 ..... ..... 010 .0111 .00 t:5    r1=%ra64 r2=%rb64
     diag_putshadowregs_pa1  000101 00 0000 0000 0001 1010 0100 0000
 
     # For 64-bit PA8700 (PCX-W2)
-    diag_getshadowregs_pa2  000101 00 0111 1000 0001 1000 0100 0000
-    diag_putshadowregs_pa2  000101 00 0111 0000 0001 1000 0100 0000
   ]
   diag_unimp                000101 i:26
 }
diff --git a/target/hppa/translate.c b/target/hppa/translate.c
index dc04f9f3c0..30fba5297a 100644
--- a/target/hppa/translate.c
+++ b/target/hppa/translate.c
@@ -4593,21 +4593,11 @@ static bool trans_diag_getshadowregs_pa1(DisasContext *ctx, arg_empty *a)
     return !ctx->is_pa20 && do_getshadowregs(ctx);
 }
 
-static bool trans_diag_getshadowregs_pa2(DisasContext *ctx, arg_empty *a)
-{
-    return ctx->is_pa20 && do_getshadowregs(ctx);
-}
-
 static bool trans_diag_putshadowregs_pa1(DisasContext *ctx, arg_empty *a)
 {
     return !ctx->is_pa20 && do_putshadowregs(ctx);
 }
 
-static bool trans_diag_putshadowregs_pa2(DisasContext *ctx, arg_empty *a)
-{
-    return ctx->is_pa20 && do_putshadowregs(ctx);
-}
-
 static bool trans_diag_unimp(DisasContext *ctx, arg_diag_unimp *a)
 {
     CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR);