diff --git a/linux-user/unicore32/syscall.h b/linux-user/unicore32/syscall.h
new file mode 100644
index 0000000..010cdd8
--- /dev/null
+++ b/linux-user/unicore32/syscall.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2010-2011 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __UC32_SYSCALL_H__
+#define __UC32_SYSCALL_H__
+struct target_pt_regs {
+    abi_ulong uregs[34];
+};
+
+#define UC32_REG_pc             uregs[31]
+#define UC32_REG_lr             uregs[30]
+#define UC32_REG_sp             uregs[29]
+#define UC32_REG_ip             uregs[28]
+#define UC32_REG_fp             uregs[27]
+#define UC32_REG_26             uregs[26]
+#define UC32_REG_25             uregs[25]
+#define UC32_REG_24             uregs[24]
+#define UC32_REG_23             uregs[23]
+#define UC32_REG_22             uregs[22]
+#define UC32_REG_21             uregs[21]
+#define UC32_REG_20             uregs[20]
+#define UC32_REG_19             uregs[19]
+#define UC32_REG_18             uregs[18]
+#define UC32_REG_17             uregs[17]
+#define UC32_REG_16             uregs[16]
+#define UC32_REG_15             uregs[15]
+#define UC32_REG_14             uregs[14]
+#define UC32_REG_13             uregs[13]
+#define UC32_REG_12             uregs[12]
+#define UC32_REG_11             uregs[11]
+#define UC32_REG_10             uregs[10]
+#define UC32_REG_09             uregs[9]
+#define UC32_REG_08             uregs[8]
+#define UC32_REG_07             uregs[7]
+#define UC32_REG_06             uregs[6]
+#define UC32_REG_05             uregs[5]
+#define UC32_REG_04             uregs[4]
+#define UC32_REG_03             uregs[3]
+#define UC32_REG_02             uregs[2]
+#define UC32_REG_01             uregs[1]
+#define UC32_REG_00             uregs[0]
+#define UC32_REG_asr            uregs[32]
+#define UC32_REG_ORIG_00        uregs[33]
+
+#define UC32_SYSCALL_BASE               0x900000
+#define UC32_SYSCALL_ARCH_BASE          0xf0000
+#define UC32_SYSCALL_NR_set_tls         (UC32_SYSCALL_ARCH_BASE + 5)
+
+#define UNAME_MACHINE "UniCore-II"
+
+#endif /* __UC32_SYSCALL_H__ */
diff --git a/linux-user/unicore32/syscall_nr.h b/linux-user/unicore32/syscall_nr.h
new file mode 100644
index 0000000..9c72d84
--- /dev/null
+++ b/linux-user/unicore32/syscall_nr.h
@@ -0,0 +1,371 @@
+/*
+ * This file contains the system call numbers for UniCore32 oldabi.
+ *
+ * Copyright (C) 2010-2011 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#define TARGET_NR_restart_syscall               0
+#define TARGET_NR_exit                          1
+#define TARGET_NR_fork                          2
+#define TARGET_NR_read                          3
+#define TARGET_NR_write                         4
+#define TARGET_NR_open                          5
+#define TARGET_NR_close                         6
+#define TARGET_NR_waitpid                       7
+#define TARGET_NR_creat                         8
+#define TARGET_NR_link                          9
+#define TARGET_NR_unlink                        10
+#define TARGET_NR_execve                        11
+#define TARGET_NR_chdir                         12
+#define TARGET_NR_time                          13
+#define TARGET_NR_mknod                         14
+#define TARGET_NR_chmod                         15
+#define TARGET_NR_lchown                        16
+#define TARGET_NR_break                         17
+                                                /* 18 */
+#define TARGET_NR_lseek                         19
+#define TARGET_NR_getpid                        20
+#define TARGET_NR_mount                         21
+#define TARGET_NR_umount                        22
+#define TARGET_NR_setuid                        23
+#define TARGET_NR_getuid                        24
+#define TARGET_NR_stime                         25
+#define TARGET_NR_ptrace                        26
+#define TARGET_NR_alarm                         27
+                                                /* 28 */
+#define TARGET_NR_pause                         29
+#define TARGET_NR_utime                         30
+#define TARGET_NR_stty                          31
+#define TARGET_NR_gtty                          32
+#define TARGET_NR_access                        33
+#define TARGET_NR_nice                          34
+#define TARGET_NR_ftime                         35
+#define TARGET_NR_sync                          36
+#define TARGET_NR_kill                          37
+#define TARGET_NR_rename                        38
+#define TARGET_NR_mkdir                         39
+#define TARGET_NR_rmdir                         40
+#define TARGET_NR_dup                           41
+#define TARGET_NR_pipe                          42
+#define TARGET_NR_times                         43
+#define TARGET_NR_prof                          44
+#define TARGET_NR_brk                           45
+#define TARGET_NR_setgid                        46
+#define TARGET_NR_getgid                        47
+#define TARGET_NR_signal                        48
+#define TARGET_NR_geteuid                       49
+#define TARGET_NR_getegid                       50
+#define TARGET_NR_acct                          51
+#define TARGET_NR_umount2                       52
+#define TARGET_NR_lock                          53
+#define TARGET_NR_ioctl                         54
+#define TARGET_NR_fcntl                         55
+#define TARGET_NR_mpx                           56
+#define TARGET_NR_setpgid                       57
+#define TARGET_NR_ulimit                        58
+                                                /* 59 */
+#define TARGET_NR_umask                         60
+#define TARGET_NR_chroot                        61
+#define TARGET_NR_ustat                         62
+#define TARGET_NR_dup2                          63
+#define TARGET_NR_getppid                       64
+#define TARGET_NR_getpgrp                       65
+#define TARGET_NR_setsid                        66
+#define TARGET_NR_sigaction                     67
+#define TARGET_NR_sgetmask                      68
+#define TARGET_NR_ssetmask                      69
+#define TARGET_NR_setreuid                      70
+#define TARGET_NR_setregid                      71
+#define TARGET_NR_sigsuspend                    72
+#define TARGET_NR_sigpending                    73
+#define TARGET_NR_sethostname                   74
+#define TARGET_NR_setrlimit                     75
+#define TARGET_NR_getrlimit                     76
+#define TARGET_NR_getrusage                     77
+#define TARGET_NR_gettimeofday                  78
+#define TARGET_NR_settimeofday                  79
+#define TARGET_NR_getgroups                     80
+#define TARGET_NR_setgroups                     81
+#define TARGET_NR_select                        82
+#define TARGET_NR_symlink                       83
+                                                /* 84 */
+#define TARGET_NR_readlink                      85
+#define TARGET_NR_uselib                        86
+#define TARGET_NR_swapon                        87
+#define TARGET_NR_reboot                        88
+#define TARGET_NR_readdir                       89
+#define TARGET_NR_mmap                          90
+#define TARGET_NR_munmap                        91
+#define TARGET_NR_truncate                      92
+#define TARGET_NR_ftruncate                     93
+#define TARGET_NR_fchmod                        94
+#define TARGET_NR_fchown                        95
+#define TARGET_NR_getpriority                   96
+#define TARGET_NR_setpriority                   97
+#define TARGET_NR_profil                        98
+#define TARGET_NR_statfs                        99
+#define TARGET_NR_fstatfs                       100
+#define TARGET_NR_ioperm                        101
+#define TARGET_NR_socketcall                    102
+#define TARGET_NR_syslog                        103
+#define TARGET_NR_setitimer                     104
+#define TARGET_NR_getitimer                     105
+#define TARGET_NR_stat                          106
+#define TARGET_NR_lstat                         107
+#define TARGET_NR_fstat                         108
+                                                /* 109 */
+                                                /* 110 */
+#define TARGET_NR_vhangup                       111
+#define TARGET_NR_idle                          112
+#define TARGET_NR_syscall                       113
+#define TARGET_NR_wait4                         114
+#define TARGET_NR_swapoff                       115
+#define TARGET_NR_sysinfo                       116
+#define TARGET_NR_ipc                           117
+#define TARGET_NR_fsync                         118
+#define TARGET_NR_sigreturn                     119
+#define TARGET_NR_clone                         120
+#define TARGET_NR_setdomainname                 121
+#define TARGET_NR_uname                         122
+#define TARGET_NR_modify_ldt                    123
+#define TARGET_NR_adjtimex                      124
+#define TARGET_NR_mprotect                      125
+#define TARGET_NR_sigprocmask                   126
+#define TARGET_NR_create_module                 127
+#define TARGET_NR_init_module                   128
+#define TARGET_NR_delete_module                 129
+#define TARGET_NR_get_kernel_syms               130
+#define TARGET_NR_quotactl                      131
+#define TARGET_NR_getpgid                       132
+#define TARGET_NR_fchdir                        133
+#define TARGET_NR_bdflush                       134
+#define TARGET_NR_sysfs                         135
+#define TARGET_NR_personality                   136
+#define TARGET_NR_afs_syscall                   137
+#define TARGET_NR_setfsuid                      138
+#define TARGET_NR_setfsgid                      139
+#define TARGET_NR__llseek                       140
+#define TARGET_NR_getdents                      141
+#define TARGET_NR__newselect                    142
+#define TARGET_NR_flock                         143
+#define TARGET_NR_msync                         144
+#define TARGET_NR_readv                         145
+#define TARGET_NR_writev                        146
+#define TARGET_NR_getsid                        147
+#define TARGET_NR_fdatasync                     148
+#define TARGET_NR__sysctl                       149
+#define TARGET_NR_mlock                         150
+#define TARGET_NR_munlock                       151
+#define TARGET_NR_mlockall                      152
+#define TARGET_NR_munlockall                    153
+#define TARGET_NR_sched_setparam                154
+#define TARGET_NR_sched_getparam                155
+#define TARGET_NR_sched_setscheduler            156
+#define TARGET_NR_sched_getscheduler            157
+#define TARGET_NR_sched_yield                   158
+#define TARGET_NR_sched_get_priority_max        159
+#define TARGET_NR_sched_get_priority_min        160
+#define TARGET_NR_sched_rr_get_interval         161
+#define TARGET_NR_nanosleep                     162
+#define TARGET_NR_mremap                        163
+#define TARGET_NR_setresuid                     164
+#define TARGET_NR_getresuid                     165
+#define TARGET_NR_vm86                          166
+#define TARGET_NR_query_module                  167
+#define TARGET_NR_poll                          168
+#define TARGET_NR_nfsservctl                    169
+#define TARGET_NR_setresgid                     170
+#define TARGET_NR_getresgid                     171
+#define TARGET_NR_prctl                         172
+#define TARGET_NR_rt_sigreturn                  173
+#define TARGET_NR_rt_sigaction                  174
+#define TARGET_NR_rt_sigprocmask                175
+#define TARGET_NR_rt_sigpending                 176
+#define TARGET_NR_rt_sigtimedwait               177
+#define TARGET_NR_rt_sigqueueinfo               178
+#define TARGET_NR_rt_sigsuspend                 179
+#define TARGET_NR_pread                         180
+#define TARGET_NR_pwrite                        181
+#define TARGET_NR_chown                         182
+#define TARGET_NR_getcwd                        183
+#define TARGET_NR_capget                        184
+#define TARGET_NR_capset                        185
+#define TARGET_NR_sigaltstack                   186
+#define TARGET_NR_sendfile                      187
+                                                /* 188 */
+                                                /* 189 */
+#define TARGET_NR_vfork                         190
+#define TARGET_NR_ugetrlimit                    191
+#define TARGET_NR_mmap2                         192
+#define TARGET_NR_truncate64                    193
+#define TARGET_NR_ftruncate64                   194
+#define TARGET_NR_stat64                        195
+#define TARGET_NR_lstat64                       196
+#define TARGET_NR_fstat64                       197
+#define TARGET_NR_lchown32                      198
+#define TARGET_NR_getuid32                      199
+#define TARGET_NR_getgid32                      200
+#define TARGET_NR_geteuid32                     201
+#define TARGET_NR_getegid32                     202
+#define TARGET_NR_setreuid32                    203
+#define TARGET_NR_setregid32                    204
+#define TARGET_NR_getgroups32                   205
+#define TARGET_NR_setgroups32                   206
+#define TARGET_NR_fchown32                      207
+#define TARGET_NR_setresuid32                   208
+#define TARGET_NR_getresuid32                   209
+#define TARGET_NR_setresgid32                   210
+#define TARGET_NR_getresgid32                   211
+#define TARGET_NR_chown32                       212
+#define TARGET_NR_setuid32                      213
+#define TARGET_NR_setgid32                      214
+#define TARGET_NR_setfsuid32                    215
+#define TARGET_NR_setfsgid32                    216
+#define TARGET_NR_getdents64                    217
+#define TARGET_NR_pivot_root                    218
+#define TARGET_NR_mincore                       219
+#define TARGET_NR_madvise                       220
+#define TARGET_NR_fcntl64                       221
+                                                /* 222 */
+                                                /* 223 */
+#define TARGET_NR_gettid                        224
+#define TARGET_NR_readahead                     225
+#define TARGET_NR_setxattr                      226
+#define TARGET_NR_lsetxattr                     227
+#define TARGET_NR_fsetxattr                     228
+#define TARGET_NR_getxattr                      229
+#define TARGET_NR_lgetxattr                     230
+#define TARGET_NR_fgetxattr                     231
+#define TARGET_NR_listxattr                     232
+#define TARGET_NR_llistxattr                    233
+#define TARGET_NR_flistxattr                    234
+#define TARGET_NR_removexattr                   235
+#define TARGET_NR_lremovexattr                  236
+#define TARGET_NR_fremovexattr                  237
+#define TARGET_NR_tkill                         238
+#define TARGET_NR_sendfile64                    239
+#define TARGET_NR_futex                         240
+#define TARGET_NR_sched_setaffinity             241
+#define TARGET_NR_sched_getaffinity             242
+#define TARGET_NR_io_setup                      243
+#define TARGET_NR_io_destroy                    244
+#define TARGET_NR_io_getevents                  245
+#define TARGET_NR_io_submit                     246
+#define TARGET_NR_io_cancel                     247
+#define TARGET_NR_exit_group                    248
+#define TARGET_NR_lookup_dcookie                249
+#define TARGET_NR_epoll_create                  250
+#define TARGET_NR_epoll_ctl                     251
+#define TARGET_NR_epoll_wait                    252
+#define TARGET_NR_remap_file_pages              253
+                                                /* 254 */
+                                                /* 255 */
+                                                /* 256 */
+#define TARGET_NR_set_tid_address               256
+#define TARGET_NR_timer_create                  257
+#define TARGET_NR_timer_settime                 258
+#define TARGET_NR_timer_gettime                 259
+#define TARGET_NR_timer_getoverrun              260
+#define TARGET_NR_timer_delete                  261
+#define TARGET_NR_clock_settime                 262
+#define TARGET_NR_clock_gettime                 263
+#define TARGET_NR_clock_getres                  264
+#define TARGET_NR_clock_nanosleep               265
+#define TARGET_NR_statfs64                      266
+#define TARGET_NR_fstatfs64                     267
+#define TARGET_NR_tgkill                        268
+#define TARGET_NR_utimes                        269
+#define TARGET_NR_fadvise64_64                  270
+#define TARGET_NR_pciconfig_iobase              271
+#define TARGET_NR_pciconfig_read                272
+#define TARGET_NR_pciconfig_write               273
+#define TARGET_NR_mq_open                       274
+#define TARGET_NR_mq_unlink                     275
+#define TARGET_NR_mq_timedsend                  276
+#define TARGET_NR_mq_timedreceive               277
+#define TARGET_NR_mq_notify                     278
+#define TARGET_NR_mq_getsetattr                 279
+#define TARGET_NR_waitid                        280
+#define TARGET_NR_socket                        281
+#define TARGET_NR_bind                          282
+#define TARGET_NR_connect                       283
+#define TARGET_NR_listen                        284
+#define TARGET_NR_accept                        285
+#define TARGET_NR_getsockname                   286
+#define TARGET_NR_getpeername                   287
+#define TARGET_NR_socketpair                    288
+#define TARGET_NR_send                          289
+#define TARGET_NR_sendto                        290
+#define TARGET_NR_recv                          291
+#define TARGET_NR_recvfrom                      292
+#define TARGET_NR_shutdown                      293
+#define TARGET_NR_setsockopt                    294
+#define TARGET_NR_getsockopt                    295
+#define TARGET_NR_sendmsg                       296
+#define TARGET_NR_recvmsg                       297
+#define TARGET_NR_semop                         298
+#define TARGET_NR_semget                        299
+#define TARGET_NR_semctl                        300
+#define TARGET_NR_msgsnd                        301
+#define TARGET_NR_msgrcv                        302
+#define TARGET_NR_msgget                        303
+#define TARGET_NR_msgctl                        304
+#define TARGET_NR_shmat                         305
+#define TARGET_NR_shmdt                         306
+#define TARGET_NR_shmget                        307
+#define TARGET_NR_shmctl                        308
+#define TARGET_NR_add_key                       309
+#define TARGET_NR_request_key                   310
+#define TARGET_NR_keyctl                        311
+#define TARGET_NR_semtimedop                    312
+#define TARGET_NR_vserver                       313
+#define TARGET_NR_ioprio_set                    314
+#define TARGET_NR_ioprio_get                    315
+#define TARGET_NR_inotify_init                  316
+#define TARGET_NR_inotify_add_watch             317
+#define TARGET_NR_inotify_rm_watch              318
+#define TARGET_NR_mbind                         319
+#define TARGET_NR_get_mempolicy                 320
+#define TARGET_NR_set_mempolicy                 321
+#define TARGET_NR_openat                        322
+#define TARGET_NR_mkdirat                       323
+#define TARGET_NR_mknodat                       324
+#define TARGET_NR_fchownat                      325
+#define TARGET_NR_futimesat                     326
+#define TARGET_NR_fstatat64                     327
+#define TARGET_NR_unlinkat                      328
+#define TARGET_NR_renameat                      329
+#define TARGET_NR_linkat                        330
+#define TARGET_NR_symlinkat                     331
+#define TARGET_NR_readlinkat                    332
+#define TARGET_NR_fchmodat                      333
+#define TARGET_NR_faccessat                     334
+                                                /* 335 */
+                                                /* 336 */
+#define TARGET_NR_unshare                       337
+#define TARGET_NR_set_robust_list               338
+#define TARGET_NR_get_robust_list               339
+#define TARGET_NR_splice                        340
+#define TARGET_NR_sync_file_range2              341
+#define TARGET_NR_tee                           342
+#define TARGET_NR_vmsplice                      343
+#define TARGET_NR_move_pages                    344
+#define TARGET_NR_getcpu                        345
+                                                /* 346 */
+#define TARGET_NR_kexec_load                    347
+#define TARGET_NR_utimensat                     348
+#define TARGET_NR_signalfd                      349
+#define TARGET_NR_timerfd                       350
+#define TARGET_NR_eventfd                       351
+#define TARGET_NR_fallocate                     352
+#define TARGET_NR_timerfd_settime               353
+#define TARGET_NR_timerfd_gettime               354
+#define TARGET_NR_signalfd4                     355
+#define TARGET_NR_eventfd2                      356
+#define TARGET_NR_epoll_create1                 357
+#define TARGET_NR_dup3                          358
+#define TARGET_NR_pipe2                         359
+#define TARGET_NR_inotify_init1                 360
diff --git a/linux-user/unicore32/target_signal.h b/linux-user/unicore32/target_signal.h
new file mode 100644
index 0000000..8b255c4
--- /dev/null
+++ b/linux-user/unicore32/target_signal.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2010-2011 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef TARGET_SIGNAL_H
+#define TARGET_SIGNAL_H
+
+/* this struct defines a stack used during syscall handling */
+typedef struct target_sigaltstack {
+    abi_ulong ss_sp;
+    abi_ulong ss_flags;
+    abi_ulong ss_size;
+} target_stack_t;
+
+/*
+ * sigaltstack controls
+ */
+#define TARGET_SS_ONSTACK               1
+#define TARGET_SS_DISABLE               2
+
+#define get_sp_from_cpustate(cpustate)  (cpustate->regs[29])
+
+#endif /* TARGET_SIGNAL_H */
diff --git a/linux-user/unicore32/termbits.h b/linux-user/unicore32/termbits.h
new file mode 100644
index 0000000..a5fcd64
--- /dev/null
+++ b/linux-user/unicore32/termbits.h
@@ -0,0 +1,2 @@
+/* NOTE: exactly the same as i386 */
+#include "../i386/termbits.h"
