diff --git a/linux-user/tilegx/target_cpu.h b/linux-user/tilegx/target_cpu.h
new file mode 100644
index 0000000..93329fc
--- /dev/null
+++ b/linux-user/tilegx/target_cpu.h
@@ -0,0 +1,35 @@
+/*
+ * Tilegx specific CPU ABI and functions for linux-user
+ *
+ * Copyright (c) 2015 Chen Gang
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef TARGET_CPU_H
+#define TARGET_CPU_H
+
+static inline void cpu_clone_regs(CPUTLState *env, target_ulong newsp)
+{
+    if (newsp) {
+        env->regs[TILEGX_R_SP] = newsp;
+    }
+    env->regs[TILEGX_R_RE] = 0;
+}
+
+static inline void cpu_set_tls(CPUTLState *env, target_ulong newtls)
+{
+    env->regs[TILEGX_R_TP] = newtls;
+}
+
+#endif
diff --git a/linux-user/tilegx/target_signal.h b/linux-user/tilegx/target_signal.h
new file mode 100644
index 0000000..8c7b02a
--- /dev/null
+++ b/linux-user/tilegx/target_signal.h
@@ -0,0 +1,28 @@
+#ifndef TARGET_SIGNAL_H
+#define TARGET_SIGNAL_H
+
+#include "cpu.h"
+
+/* this struct defines a stack used during syscall handling */
+
+typedef struct target_sigaltstack {
+    abi_ulong ss_sp;
+    abi_ulong ss_size;
+    abi_long ss_flags;
+} target_stack_t;
+
+/*
+ * sigaltstack controls
+ */
+#define TARGET_SS_ONSTACK     1
+#define TARGET_SS_DISABLE     2
+
+#define TARGET_MINSIGSTKSZ    2048
+#define TARGET_SIGSTKSZ       8192
+
+static inline abi_ulong get_sp_from_cpustate(CPUTLState *state)
+{
+    return state->regs[TILEGX_R_SP];
+}
+
+#endif /* TARGET_SIGNAL_H */
diff --git a/linux-user/tilegx/target_structs.h b/linux-user/tilegx/target_structs.h
new file mode 100644
index 0000000..6ed6741
--- /dev/null
+++ b/linux-user/tilegx/target_structs.h
@@ -0,0 +1,48 @@
+/*
+ * Tilegx specific structures for linux-user
+ *
+ * Copyright (c) 2015 Chen Gang
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef TARGET_STRUCTS_H
+#define TARGET_STRUCTS_H
+
+struct target_ipc_perm {
+    abi_int __key;                      /* Key.  */
+    abi_uint uid;                       /* Owner's user ID.  */
+    abi_uint gid;                       /* Owner's group ID.  */
+    abi_uint cuid;                      /* Creator's user ID.  */
+    abi_uint cgid;                      /* Creator's group ID.  */
+    abi_uint mode;                    /* Read/write permission.  */
+    abi_ushort __seq;                   /* Sequence number.  */
+    abi_ushort __pad2;
+    abi_ulong __unused1;
+    abi_ulong __unused2;
+};
+
+struct target_shmid_ds {
+    struct target_ipc_perm shm_perm;    /* operation permission struct */
+    abi_long shm_segsz;                 /* size of segment in bytes */
+    abi_ulong shm_atime;                /* time of last shmat() */
+    abi_ulong shm_dtime;                /* time of last shmdt() */
+    abi_ulong shm_ctime;                /* time of last change by shmctl() */
+    abi_int shm_cpid;                   /* pid of creator */
+    abi_int shm_lpid;                   /* pid of last shmop */
+    abi_ulong shm_nattch;               /* number of current attaches */
+    abi_ulong __unused4;
+    abi_ulong __unused5;
+};
+
+#endif
