diff --git a/libc/Android.mk b/libc/Android.mk
index f54278a..b3b74ea 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -230,7 +230,9 @@
 	wchar/wcsstr.c \
 	wchar/wcstok.c \
 	wchar/wcswidth.c \
+	wchar/wcsxfrm.c \
 	wchar/wmemchr.c \
+	wchar/wmemcmp.c \
 	wchar/wmemcpy.c \
 	wchar/wmemmove.c \
 	wchar/wmemset.c \
diff --git a/libc/bionic/pthread.c b/libc/bionic/pthread.c
index e21a1f9..b28cd9f 100644
--- a/libc/bionic/pthread.c
+++ b/libc/bionic/pthread.c
@@ -1866,15 +1866,15 @@
  */
 int  pthread_once( pthread_once_t*  once_control,  void (*init_routine)(void) )
 {
-    static pthread_mutex_t   once_lock = PTHREAD_MUTEX_INITIALIZER;
+    static pthread_mutex_t   once_lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER;
 
     if (*once_control == PTHREAD_ONCE_INIT) {
-        _normal_lock( &once_lock );
+        pthread_mutex_lock( &once_lock );
         if (*once_control == PTHREAD_ONCE_INIT) {
             (*init_routine)();
             *once_control = ~PTHREAD_ONCE_INIT;
         }
-        _normal_unlock( &once_lock );
+        pthread_mutex_unlock( &once_lock );
     }
     return 0;
 }
diff --git a/libc/kernel/common/linux/akm8975.h b/libc/kernel/common/linux/akm8975.h
new file mode 100644
index 0000000..1815f75
--- /dev/null
+++ b/libc/kernel/common/linux/akm8975.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef AKM8975_H
+#define AKM8975_H
+
+#include <linux/ioctl.h>
+
+#define AK8975_MODE_SNG_MEASURE 0x01
+#define AK8975_MODE_SELF_TEST 0x08
+#define AK8975_MODE_FUSE_ACCESS 0x0F
+#define AK8975_MODE_POWER_DOWN 0x00
+
+#define RBUFF_SIZE 8  
+
+#define AK8975_REG_WIA 0x00
+#define AK8975_REG_INFO 0x01
+#define AK8975_REG_ST1 0x02
+#define AK8975_REG_HXL 0x03
+#define AK8975_REG_HXH 0x04
+#define AK8975_REG_HYL 0x05
+#define AK8975_REG_HYH 0x06
+#define AK8975_REG_HZL 0x07
+#define AK8975_REG_HZH 0x08
+#define AK8975_REG_ST2 0x09
+#define AK8975_REG_CNTL 0x0A
+#define AK8975_REG_RSV 0x0B
+#define AK8975_REG_ASTC 0x0C
+#define AK8975_REG_TS1 0x0D
+#define AK8975_REG_TS2 0x0E
+#define AK8975_REG_I2CDIS 0x0F
+
+#define AK8975_FUSE_ASAX 0x10
+#define AK8975_FUSE_ASAY 0x11
+#define AK8975_FUSE_ASAZ 0x12
+
+#define AKMIO 0xA1
+
+#define ECS_IOCTL_WRITE _IOW(AKMIO, 0x02, char[5])
+#define ECS_IOCTL_READ _IOWR(AKMIO, 0x03, char[5])
+#define ECS_IOCTL_GETDATA _IOR(AKMIO, 0x08, char[RBUFF_SIZE])
+#define ECS_IOCTL_SET_YPR _IOW(AKMIO, 0x0C, short[12])
+#define ECS_IOCTL_GET_OPEN_STATUS _IOR(AKMIO, 0x0D, int)
+#define ECS_IOCTL_GET_CLOSE_STATUS _IOR(AKMIO, 0x0E, int)
+#define ECS_IOCTL_GET_DELAY _IOR(AKMIO, 0x30, short)
+
+#define ECS_IOCTL_APP_SET_MFLAG _IOW(AKMIO, 0x11, short)
+#define ECS_IOCTL_APP_GET_MFLAG _IOW(AKMIO, 0x12, short)
+#define ECS_IOCTL_APP_SET_AFLAG _IOW(AKMIO, 0x13, short)
+#define ECS_IOCTL_APP_GET_AFLAG _IOR(AKMIO, 0x14, short)
+#define ECS_IOCTL_APP_SET_DELAY _IOW(AKMIO, 0x18, short)
+#define ECS_IOCTL_APP_GET_DELAY ECS_IOCTL_GET_DELAY
+#define ECS_IOCTL_APP_SET_MVFLAG _IOW(AKMIO, 0x19, short)  
+#define ECS_IOCTL_APP_GET_MVFLAG _IOR(AKMIO, 0x1A, short)  
+#define ECS_IOCTL_APP_SET_TFLAG _IOR(AKMIO, 0x15, short)
+
+#define ECS_INTR 140
+
+struct akm8975_platform_data {
+ int intr;
+};
+
+#endif
+
diff --git a/libc/kernel/common/linux/bmp085.h b/libc/kernel/common/linux/bmp085.h
new file mode 100644
index 0000000..650cb88
--- /dev/null
+++ b/libc/kernel/common/linux/bmp085.h
@@ -0,0 +1,29 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __BMP085_H__
+#define __BMP085_H__
+
+#include <linux/ioctl.h>  
+
+#define BMP085_NAME "bmp085"
+
+#define BMP085_IOCTL_BASE 78
+
+#define BMP085_IOCTL_SET_DELAY _IOW(BMP085_IOCTL_BASE, 0, int)
+#define BMP085_IOCTL_GET_DELAY _IOR(BMP085_IOCTL_BASE, 1, int)
+#define BMP085_IOCTL_SET_ENABLE _IOW(BMP085_IOCTL_BASE, 2, int)
+#define BMP085_IOCTL_GET_ENABLE _IOR(BMP085_IOCTL_BASE, 3, int)
+#define BMP085_IOCTL_ACCURACY _IOW(BMP085_IOCTL_BASE, 4, int)
+
+#endif
+
+
diff --git a/libc/kernel/common/linux/kxtf9.h b/libc/kernel/common/linux/kxtf9.h
new file mode 100644
index 0000000..9141364
--- /dev/null
+++ b/libc/kernel/common/linux/kxtf9.h
@@ -0,0 +1,70 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __KXTF9_H__
+#define __KXTF9_H__
+
+#include <linux/ioctl.h>  
+
+#define KXTF9_IOCTL_BASE 77
+
+#define KXTF9_IOCTL_SET_DELAY _IOW(KXTF9_IOCTL_BASE, 0, int)
+#define KXTF9_IOCTL_GET_DELAY _IOR(KXTF9_IOCTL_BASE, 1, int)
+#define KXTF9_IOCTL_SET_ENABLE _IOW(KXTF9_IOCTL_BASE, 2, int)
+#define KXTF9_IOCTL_GET_ENABLE _IOR(KXTF9_IOCTL_BASE, 3, int)
+#define KXTF9_IOCTL_SET_G_RANGE _IOW(KXTF9_IOCTL_BASE, 4, int)
+
+#define KXTF9_IOCTL_SET_TILT_ENABLE _IOW(KXTF9_IOCTL_BASE, 5, int)
+#define KXTF9_IOCTL_SET_TAP_ENABLE _IOW(KXTF9_IOCTL_BASE, 6, int)
+#define KXTF9_IOCTL_SET_WAKE_ENABLE _IOW(KXTF9_IOCTL_BASE, 7, int)
+#define KXTF9_IOCTL_SET_PM_MODE _IOW(KXTF9_IOCTL_BASE, 8, int)
+#define KXTF9_IOCTL_SELF_TEST _IOW(KXTF9_IOCTL_BASE, 9, int)
+#define KXTF9_IOCTL_SET_SENSITIVITY _IOW(KXTF9_IOCTL_BASE, 10, int)
+
+#define RES_12BIT 0x40
+#define KXTF9_G_2G 0x00
+#define KXTF9_G_4G 0x08
+#define KXTF9_G_8G 0x10
+#define TPE 0x01  
+#define WUFE 0x02  
+#define TDTE 0x04  
+
+#define OTP1_6 0x00  
+#define OTP6_3 0x20
+#define OTP12_5 0x40
+#define OTP50 0x60
+#define OWUF25 0x00  
+#define OWUF50 0x01
+#define OWUF100 0x02
+#define OWUF200 0x03
+#define OTDT50 0x00  
+#define OTDT100 0x04
+#define OTDT200 0x08
+#define OTDT400 0x0C
+
+#define IEN 0x20  
+#define IEA 0x10  
+#define IEL 0x08  
+#define IEU 0x04  
+
+#define ODR800 0x06  
+#define ODR400 0x05
+#define ODR200 0x04
+#define ODR100 0x03
+#define ODR50 0x02
+#define ODR25 0x01
+#define ODR12_5 0x00
+
+#define SENSITIVITY_REGS 0x07
+
+#endif
+
+
diff --git a/libc/kernel/common/linux/l3g4200d.h b/libc/kernel/common/linux/l3g4200d.h
new file mode 100644
index 0000000..0a0f8cd
--- /dev/null
+++ b/libc/kernel/common/linux/l3g4200d.h
@@ -0,0 +1,27 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __L3G4200D_H__
+#define __L3G4200D_H__
+
+#include <linux/ioctl.h>  
+
+#define L3G4200D_NAME "l3g4200d"
+
+#define L3G4200D_IOCTL_BASE 77
+
+#define L3G4200D_IOCTL_SET_DELAY _IOW(L3G4200D_IOCTL_BASE, 0, int)
+#define L3G4200D_IOCTL_GET_DELAY _IOR(L3G4200D_IOCTL_BASE, 1, int)
+#define L3G4200D_IOCTL_SET_ENABLE _IOW(L3G4200D_IOCTL_BASE, 2, int)
+#define L3G4200D_IOCTL_GET_ENABLE _IOR(L3G4200D_IOCTL_BASE, 3, int)
+
+#endif
+
diff --git a/libc/kernel/common/linux/max9635.h b/libc/kernel/common/linux/max9635.h
new file mode 100644
index 0000000..e696fa9
--- /dev/null
+++ b/libc/kernel/common/linux/max9635.h
@@ -0,0 +1,23 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _LINUX_MAX9635_H__
+#define _LINUX_MAX9635_H__
+
+#define MAX9635_NAME "MAX9635_als"
+#define FOPS_MAX9635_NAME "MAX9635"
+
+#define MAX9635_IO 0xA3
+
+#define MAX9635_IOCTL_GET_ENABLE _IOR(MAX9635_IO, 0x00, char)
+#define MAX9635_IOCTL_SET_ENABLE _IOW(MAX9635_IO, 0x01, char)
+
+#endif
diff --git a/libc/kernel/common/linux/usb/f_mtp.h b/libc/kernel/common/linux/usb/f_mtp.h
new file mode 100644
index 0000000..e155e7e
--- /dev/null
+++ b/libc/kernel/common/linux/usb/f_mtp.h
@@ -0,0 +1,42 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __LINUX_USB_F_MTP_H
+#define __LINUX_USB_F_MTP_H
+
+#define MTP_INTERFACE_MODE_MTP 0
+#define MTP_INTERFACE_MODE_PTP 1
+
+struct mtp_file_range {
+
+ int fd;
+
+ loff_t offset;
+
+ size_t length;
+};
+
+struct mtp_event {
+
+ size_t length;
+
+ void *data;
+};
+
+#define MTP_SEND_FILE _IOW('M', 0, struct mtp_file_range)
+
+#define MTP_RECEIVE_FILE _IOW('M', 1, struct mtp_file_range)
+
+#define MTP_SET_INTERFACE_MODE _IOW('M', 2, int)
+
+#define MTP_SEND_EVENT _IOW('M', 3, struct mtp_event)
+
+#endif
diff --git a/libc/stdlib/wchar.c b/libc/stdlib/wchar.c
index 1480212..d83613a 100644
--- a/libc/stdlib/wchar.c
+++ b/libc/stdlib/wchar.c
@@ -302,12 +302,6 @@
     return (wchar_t*) strstr( (const char*)ws1, (const char*)ws2 );
 }
 
-size_t wcsxfrm(wchar_t *ws1, const wchar_t *ws2, size_t n)
-{
-    memcpy( (char*)ws1, (const char*)ws2, n );
-    return n;
-}
-
 int wctob(wint_t c)
 {
     return c;