diff --git a/arch/arm64/src/common/Make.defs b/arch/arm64/src/common/Make.defs
index be636b60f5..598e5d51c9 100644
--- a/arch/arm64/src/common/Make.defs
+++ b/arch/arm64/src/common/Make.defs
@@ -119,3 +119,11 @@ endif
 ifeq ($(CONFIG_SCHED_BACKTRACE),y)
 CMN_CSRCS += arm64_backtrace.c
 endif
+
+ifeq ($(CONFIG_ARM64_SEMIHOSTING_HOSTFS),y)
+  CMN_CSRCS += arm64_hostfs.c
+endif
+
+ifeq ($(CONFIG_DEBUG_TCBINFO),y)
+CMN_CSRCS += arm64_tcbinfo.c
+endif
diff --git a/arch/arm64/src/common/arm64_tcbinfo.c b/arch/arm64/src/common/arm64_tcbinfo.c
new file mode 100644
index 0000000000..16a5e13030
--- /dev/null
+++ b/arch/arm64/src/common/arm64_tcbinfo.c
@@ -0,0 +1,98 @@
+/****************************************************************************
+ * arch/arm64/src/common/arm64_tcbinfo.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifdef CONFIG_DEBUG_TCBINFO
+
+#include <nuttx/sched.h>
+#include <arch/irq.h>
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static const uint16_t g_reg_offs[] =
+{
+  TCB_REG_OFF(REG_X0),
+  TCB_REG_OFF(REG_X1),
+  TCB_REG_OFF(REG_X2),
+  TCB_REG_OFF(REG_X3),
+  TCB_REG_OFF(REG_X4),
+  TCB_REG_OFF(REG_X5),
+  TCB_REG_OFF(REG_X6),
+  TCB_REG_OFF(REG_X7),
+  TCB_REG_OFF(REG_X8),
+  TCB_REG_OFF(REG_X9),
+  TCB_REG_OFF(REG_X10),
+  TCB_REG_OFF(REG_X11),
+  TCB_REG_OFF(REG_X12),
+  TCB_REG_OFF(REG_X13),
+  TCB_REG_OFF(REG_X14),
+  TCB_REG_OFF(REG_X15),
+  TCB_REG_OFF(REG_X16),
+  TCB_REG_OFF(REG_X17),
+  TCB_REG_OFF(REG_X18),
+  TCB_REG_OFF(REG_X19),
+  TCB_REG_OFF(REG_X20),
+  TCB_REG_OFF(REG_X21),
+  TCB_REG_OFF(REG_X22),
+  TCB_REG_OFF(REG_X23),
+  TCB_REG_OFF(REG_X24),
+  TCB_REG_OFF(REG_X25),
+  TCB_REG_OFF(REG_X26),
+  TCB_REG_OFF(REG_X27),
+  TCB_REG_OFF(REG_X28),
+  TCB_REG_OFF(REG_X29),
+  TCB_REG_OFF(REG_X30),
+  TCB_REG_OFF(REG_SP_ELX),
+  TCB_REG_OFF(REG_ELR),
+};
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+const struct tcbinfo_s g_tcbinfo =
+{
+  .pid_off        = TCB_PID_OFF,
+  .state_off      = TCB_STATE_OFF,
+  .pri_off        = TCB_PRI_OFF,
+  .name_off       = TCB_NAME_OFF,
+  .stack_off      = TCB_STACK_OFF,
+  .stack_size_off = TCB_STACK_SIZE_OFF,
+  .regs_off       = TCB_REGS_OFF,
+  .basic_num      = sizeof(g_reg_offs) / sizeof(g_reg_offs[0]),
+  .total_num      = sizeof(g_reg_offs) / sizeof(g_reg_offs[0]),
+  {
+    .p = g_reg_offs,
+  },
+};
+
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+