2014-03-21 Sabrini Ni <sabrinanitw@gmail.com>

        * nds32/_argv.S: Replace syscall with break.
        * nds32/_argvlen.S: Ditto.
        * nds32/_chdir.S: Ditto.
        * nds32/_chmod.S: Ditto.
        * nds32/_close.S: Ditto.
        * nds32/_exit.S: Ditto.
        * nds32/_fstat.S: Ditto.
        * nds32/_getpid.S: Ditto.
        * nds32/_gettimeofday.S: Ditto.
        * nds32/_isatty.S: Ditto.
        * nds32/_kill.S: Ditto.
        * nds32/_link.S: Ditto.
        * nds32/_lseek.S: Ditto.
        * nds32/_open.S: Ditto.
        * nds32/_read.S: Ditto.
        * nds32/_rename.S: Ditto.
        * nds32/_stat.S: Ditto.
        * nds32/_system.S: Ditto.
        * nds32/_time.S: Ditto.
        * nds32/_times.S: Ditto.
        * nds32/_unlink.S: Ditto.
        * nds32/_utime.S: Ditto.
        * nds32/_write.S: Ditto.
        * nds32/syscall_error_handler.S: Ditto.
        * nds32/vh.h: New.

25 files changed, 301 insertions, 46 deletions

diff --git a/libgloss/nds32/_argv.S b/libgloss/nds32/_argv.S
index 2fcf1f1..bd85979 100644
--- a/libgloss/nds32/_argv.S
+++ b/libgloss/nds32/_argv.S
@@ -27,8 +27,10 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
+#ifndef __NDS32_VH__
+
 #include "../syscall.h"
 #include "syscall_extra.h"
-
-
 SYS_WRAPPER _argv, SYS_argv
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_argvlen.S b/libgloss/nds32/_argvlen.S
index 3f88a41..32401d3 100644
--- a/libgloss/nds32/_argvlen.S
+++ b/libgloss/nds32/_argvlen.S
@@ -27,8 +27,10 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
+#ifndef __NDS32_VH__
+
 #include "../syscall.h"
 #include "syscall_extra.h"
-
-
 SYS_WRAPPER _argvlen, SYS_argvlen
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_chdir.S b/libgloss/nds32/_chdir.S
index 0fd291e..bb6b324 100644
--- a/libgloss/nds32/_chdir.S
+++ b/libgloss/nds32/_chdir.S
@@ -27,8 +27,10 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
+#ifndef __NDS32_VH__
+
 #include "../syscall.h"
 #include "syscall_extra.h"
-
-
 SYS_WRAPPER _chdir, SYS_chdir
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_chmod.S b/libgloss/nds32/_chmod.S
index 70c903d..231a18f 100644
--- a/libgloss/nds32/_chmod.S
+++ b/libgloss/nds32/_chmod.S
@@ -27,8 +27,11 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
 
+#ifndef __NDS32_VH__
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _chmod, SYS_chmod
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_close.S b/libgloss/nds32/_close.S
index c0abe59..0a1aec1 100644
--- a/libgloss/nds32/_close.S
+++ b/libgloss/nds32/_close.S
@@ -27,8 +27,16 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE1 _close, VH_CLOSE
 
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _close, SYS_close
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_exit.S b/libgloss/nds32/_exit.S
index 46a2040..8154fbe 100644
--- a/libgloss/nds32/_exit.S
+++ b/libgloss/nds32/_exit.S
@@ -27,10 +27,16 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE3 _exit, VH_EXIT
 
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 	.section .text
 	.global	_exit
 	.type	_exit, @function
@@ -38,3 +44,5 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 _exit:
 	syscall	SYS_exit	/* Make syscall 'SYS_exit'.  */
 	.size	_exit, .-_exit
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_fstat.S b/libgloss/nds32/_fstat.S
index 94e58ad..7d0cb6e 100644
--- a/libgloss/nds32/_fstat.S
+++ b/libgloss/nds32/_fstat.S
@@ -27,8 +27,17 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
 
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE1 _fstat, VH_FSTAT
+
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _fstat, SYS_fstat
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_getpid.S b/libgloss/nds32/_getpid.S
index 8468d3f..086be84 100644
--- a/libgloss/nds32/_getpid.S
+++ b/libgloss/nds32/_getpid.S
@@ -27,8 +27,11 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
 
+#ifndef __NDS32_VH__
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _getpid, SYS_getpid
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_gettimeofday.S b/libgloss/nds32/_gettimeofday.S
index 85e2eae..adc5f68 100644
--- a/libgloss/nds32/_gettimeofday.S
+++ b/libgloss/nds32/_gettimeofday.S
@@ -27,8 +27,16 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE3 _gettimeofday, VH_GETTIMEOFDAY
 
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _gettimeofday, SYS_gettimeofday
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_isatty.S b/libgloss/nds32/_isatty.S
index bd30248..c90028a 100644
--- a/libgloss/nds32/_isatty.S
+++ b/libgloss/nds32/_isatty.S
@@ -27,8 +27,16 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE0 _isatty, VH_ISATTY
 
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _isatty, SYS_isatty
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_kill.S b/libgloss/nds32/_kill.S
index 4a040f6..69d8b41 100644
--- a/libgloss/nds32/_kill.S
+++ b/libgloss/nds32/_kill.S
@@ -27,8 +27,11 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
 
+#ifndef __NDS32_VH__
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _kill, SYS_kill
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_link.S b/libgloss/nds32/_link.S
index cbcb759..15016fc 100644
--- a/libgloss/nds32/_link.S
+++ b/libgloss/nds32/_link.S
@@ -27,8 +27,10 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
+#ifndef __NDS32_VH__
+
 #include "../syscall.h"
 #include "syscall_extra.h"
-
-
 SYS_WRAPPER _link, SYS_link
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_lseek.S b/libgloss/nds32/_lseek.S
index 86e2d31..c17e22f 100644
--- a/libgloss/nds32/_lseek.S
+++ b/libgloss/nds32/_lseek.S
@@ -27,8 +27,16 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE1 _lseek, VH_LSEEK
 
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _lseek, SYS_lseek
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_open.S b/libgloss/nds32/_open.S
index 6ef79cb..6c80ab0 100644
--- a/libgloss/nds32/_open.S
+++ b/libgloss/nds32/_open.S
@@ -27,8 +27,16 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE1 _open, VH_OPEN
 
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _open, SYS_open
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_read.S b/libgloss/nds32/_read.S
index ad15dd4..ca0c8af 100644
--- a/libgloss/nds32/_read.S
+++ b/libgloss/nds32/_read.S
@@ -27,8 +27,16 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE1 _read, VH_READ
 
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _read, SYS_read
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_rename.S b/libgloss/nds32/_rename.S
index 0781e3a..f91c1f6 100644
--- a/libgloss/nds32/_rename.S
+++ b/libgloss/nds32/_rename.S
@@ -27,8 +27,16 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE1 _rename, VH_RENAME
 
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _rename, SYS_rename
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_stat.S b/libgloss/nds32/_stat.S
index 105fda4..9bb23ce 100644
--- a/libgloss/nds32/_stat.S
+++ b/libgloss/nds32/_stat.S
@@ -27,8 +27,16 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE1 _stat, VH_STAT
 
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _stat, SYS_stat
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_system.S b/libgloss/nds32/_system.S
index 3422d86..bbd6a78 100644
--- a/libgloss/nds32/_system.S
+++ b/libgloss/nds32/_system.S
@@ -27,8 +27,16 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE1 _system, VH_SYSTEM
 
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _system, SYS_system
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_time.S b/libgloss/nds32/_time.S
index 811dd12..43c7aba 100644
--- a/libgloss/nds32/_time.S
+++ b/libgloss/nds32/_time.S
@@ -27,8 +27,10 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
+#ifndef __NDS32_VH__
+
 #include "../syscall.h"
 #include "syscall_extra.h"
-
-
 SYS_WRAPPER _time, SYS_time
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_times.S b/libgloss/nds32/_times.S
index 2d21814..048de62 100644
--- a/libgloss/nds32/_times.S
+++ b/libgloss/nds32/_times.S
@@ -27,8 +27,10 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
+#ifndef __NDS32_VH__
+
 #include "../syscall.h"
 #include "syscall_extra.h"
-
-
 SYS_WRAPPER _times, SYS_times
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_unlink.S b/libgloss/nds32/_unlink.S
index 77a62d6..ec251b5 100644
--- a/libgloss/nds32/_unlink.S
+++ b/libgloss/nds32/_unlink.S
@@ -27,8 +27,17 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
 
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE1 _lseek, VH_LSEEK
+
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _unlink, SYS_unlink
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_utime.S b/libgloss/nds32/_utime.S
index 45af323..014aa1a 100644
--- a/libgloss/nds32/_utime.S
+++ b/libgloss/nds32/_utime.S
@@ -27,8 +27,10 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
+#ifndef __NDS32_VH__
+
 #include "../syscall.h"
 #include "syscall_extra.h"
-
-
 SYS_WRAPPER _utime, SYS_utime
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/_write.S b/libgloss/nds32/_write.S
index 1b1752c..f0d8651 100644
--- a/libgloss/nds32/_write.S
+++ b/libgloss/nds32/_write.S
@@ -27,8 +27,16 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include "../syscall.h"
-#include "syscall_extra.h"
+#ifdef __NDS32_VH__
+
+#include "vh.h"
+.extern _impure_ptr
+TYPE1 _write, VH_WRITE
 
+#else	/* not __NDS32_VH__ */
 
+#include "../syscall.h"
+#include "syscall_extra.h"
 SYS_WRAPPER _write, SYS_write
+
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/syscall_error_handler.S b/libgloss/nds32/syscall_error_handler.S
index 9398c51..2b65c68 100644
--- a/libgloss/nds32/syscall_error_handler.S
+++ b/libgloss/nds32/syscall_error_handler.S
@@ -27,6 +27,8 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
+#ifndef __NDS32_VH__
+
 #include "../syscall.h"
 #include "syscall_extra.h"
 
@@ -47,3 +49,4 @@ __syscall_error_handler:
 1:
 	ret
 	.size	__syscall_error_handler, .-__syscall_error_handler
+#endif	/* not __NDS32_VH__ */
diff --git a/libgloss/nds32/vh.h b/libgloss/nds32/vh.h
new file mode 100644
index 0000000..4ee3e89
--- /dev/null
+++ b/libgloss/nds32/vh.h
@@ -0,0 +1,123 @@
+#ifndef _VH_H
+#define _VH_H
+
+/*
+BREAK #SWID definition:
+0x00 – 0x1F: Free to use
+0x20 – 0x1FF: Reserved for EX9
+0x0200 – 0x7EFF: Free to use
+0x7F00 – 0x7FFF: Reserved for virtual hosting
+*/
+/* These are #SWID defined for Virtual Hosting. */
+#define VH_FOPEN	0x7F00
+#define VH_FREOPEN	0x7F01
+#define VH_FCLOSE	0x7F02
+#define VH_FFLUSH	0x7F03
+#define VH_FREAD	0x7F04
+#define VH_FWRITE	0x7F05
+#define VH_FGETC	0x7F06
+#define VH_FGETS	0x7F07
+#define VH_FPUTC	0x7F08
+#define VH_FPUTS	0x7F09
+#define VH_UNGETC	0x7F0A
+#define VH_FTELL	0x7F0B
+#define VH_FSEEK	0x7F0C
+#define VH_REWIND	0x7F0D
+#define VH_CLEARERR	0x7F0E
+#define VH_FEOF		0x7F0F
+#define VH_FERROR	0x7F10
+#define VH_REMOVE	0x7F11
+#define VH_TMPFILE	0x7F12
+/* From here, define Low-level routines. */
+#define VH_EXIT		0x7F20
+#define VH_OPEN         0x7F21
+#define VH_CLOSE        0x7F22
+#define VH_READ         0x7F23
+#define VH_WRITE        0x7F24
+#define VH_LSEEK        0x7F25
+#define VH_UNLINK       0x7F26
+#define VH_RENAME       0x7F27
+#define VH_FSTAT        0x7F28
+#define VH_STAT         0x7F29
+#define VH_GETTIMEOFDAY 0x7F2A
+#define VH_ISATTY       0x7F2B
+#define VH_SYSTEM       0x7F2C
+#define VH_GETERR       0x7F2D	/* The method we get errno.  */
+
+
+/* Define macros that generate assembly output.
+   Generate a System Call exception to notify GDB
+   to handle this virtual I/O routine.  */
+
+.macro TYPE0 name num
+/* If r0 is not NULL(0), set errno.  */
+        .text
+        .global \name
+        .type   \name, @function
+        .align  2
+\name:
+	BREAK	\num		/* Generate_Exception(Breakpoint);  */
+	bnez	$r0, 1f		/* Branch if success.
+				   r0 value is not NULL(0).  */
+	BREAK	VH_GETERR
+	l.w	$r15, _impure_ptr
+        swi	$r0, [$r15]	/* Set errno.  */
+	move	$r0, 0		/* Set return value as 0.  */
+1:
+        ret
+        .size   \name, .-\name
+.endm
+
+.macro TYPE1 name num
+/* If r0 is EOF(-1), set errno.  */
+        .text
+        .global \name
+        .type   \name, @function
+        .align  2
+\name:
+	BREAK	\num		/* Generate_Exception(Breakpoint);  */
+	addi	$r15, $r0, 1
+        bnezs8  1f		/* Branch if success.
+				   r0 value is EOF(-1).  */
+	BREAK	VH_GETERR
+	l.w	$r15, _impure_ptr
+        swi	$r0, [$r15]	/* Set errno.  */
+        move    $r0, -1		/* Set return value as -1.  */
+1:
+        ret
+        .size   \name, .-\name
+.endm
+
+.macro TYPE2 name num
+/* If r0 is less than r2, set errno.  */
+        .text
+        .global \name
+        .type   \name, @function
+        .align  2
+\name:
+	BREAK	\num		/* Generate_Exception(Breakpoint);  */
+	slt	$r15, $r0, $r2	/* If r15 is set, set errno.  */
+        beqzs8  1f		/* Branch if success.
+				   r15 is zero.  */
+	move	$r4, $r0	/* Keep return value r0.  */
+	BREAK	VH_GETERR
+	l.w	$r15, _impure_ptr
+        swi	$r0, [$r15]	/* Set errno.  */
+        move    $r0, $r4	/* Restore r0.  */
+1:
+        ret
+        .size   \name, .-\name
+.endm
+
+.macro TYPE3 name num
+/* No errors are defined.  */
+        .text
+        .global \name
+        .type   \name, @function
+        .align  2
+\name:
+	BREAK	\num		/* Generate_Exception(Breakpoint);  */
+        ret
+        .size   \name, .-\name
+.endm
+#endif /* _VH_H */