tci: Add implementation for INDEX_op_ld16u_i64

This fixes "make check-tcg" on a Debian x86_64 host.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20190410194838.10123-1-sw@weilnetz.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/tcg/tci.c b/tcg/tci.c
index 33edca1..a620865 100644
--- a/tcg/tci.c
+++ b/tcg/tci.c
@@ -128,6 +128,12 @@
 }
 
 static void
+tci_write_reg16(tcg_target_ulong *regs, TCGReg index, uint16_t value)
+{
+    tci_write_reg(regs, index, value);
+}
+
+static void
 tci_write_reg32(tcg_target_ulong *regs, TCGReg index, uint32_t value)
 {
     tci_write_reg(regs, index, value);
@@ -585,6 +591,8 @@
             tci_write_reg8(regs, t0, *(uint8_t *)(t1 + t2));
             break;
         case INDEX_op_ld8s_i32:
+            TODO();
+            break;
         case INDEX_op_ld16u_i32:
             TODO();
             break;
@@ -854,7 +862,14 @@
             tci_write_reg8(regs, t0, *(uint8_t *)(t1 + t2));
             break;
         case INDEX_op_ld8s_i64:
+            TODO();
+            break;
         case INDEX_op_ld16u_i64:
+            t0 = *tb_ptr++;
+            t1 = tci_read_r(regs, &tb_ptr);
+            t2 = tci_read_s32(&tb_ptr);
+            tci_write_reg16(regs, t0, *(uint16_t *)(t1 + t2));
+            break;
         case INDEX_op_ld16s_i64:
             TODO();
             break;