diff --git a/contrib/sdk/sources/newlib/libc/crt/gthr-kos32.c b/contrib/sdk/sources/newlib/libc/crt/gthr-kos32.c
index ddbed39534..9f7f833581 100644
--- a/contrib/sdk/sources/newlib/libc/crt/gthr-kos32.c
+++ b/contrib/sdk/sources/newlib/libc/crt/gthr-kos32.c
@@ -21,7 +21,8 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 <http://www.gnu.org/licenses/>.  */
 
 #include <errno.h>
-#include <kos32sys.h>
+#include <stdint.h>
+#include <sys/ksys.h>
 #include "gthr-kos32.h"
 
 #define FUTEX_INIT      0
@@ -35,6 +36,42 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #define exchange_release(ptr, new) \
   __atomic_exchange_4((ptr), (new), __ATOMIC_RELEASE)
 
+#define TLS_KEY_PID         0
+#define TLS_KEY_TID         4
+#define TLS_KEY_LOW_STACK   8
+#define TLS_KEY_HIGH_STACK 12
+#define TLS_KEY_LIBC       16
+
+unsigned int tls_alloc(void);
+int tls_free(unsigned int key);
+
+static inline int tls_set(unsigned int key, void *val)
+{
+    int ret = -1;
+    if(key < 4096)
+    {
+        __asm__ __volatile__(
+        "movl %0, %%fs:(%1)"
+        ::"r"(val),"r"(key));
+        ret = 0;
+    }
+    return ret;
+};
+
+static inline void *tls_get(unsigned int key)
+{
+    void *val = (void*)-1;
+    if(key < 4096)
+    {
+        __asm__ __volatile__(
+        "movl %%fs:(%1), %0"
+        :"=r"(val)
+        :"r"(key));
+    };
+    return val;
+}
+
+
 int __gthr_kos32_once (__gthread_once_t *once, void (*func) (void))
 {
     if (once == NULL || func == NULL)
@@ -50,7 +87,7 @@ int __gthr_kos32_once (__gthread_once_t *once, void (*func) (void))
         else
         {
             while (! once->done)
-                yield();
+                _ksys_thread_yield();
         }
     }
     return 0;
@@ -92,25 +129,14 @@ int __gthr_kos32_setspecific (__gthread_key_t key, const void *ptr)
 
 void __gthr_kos32_mutex_init_function (__gthread_mutex_t *mutex)
 {
-    int handle;
-
     mutex->lock = 0;
-
-    __asm__ volatile(
-    "int $0x40\t"
-    :"=a"(handle)
-    :"a"(77),"b"(FUTEX_INIT),"c"(mutex));
-    mutex->handle = handle;
+    mutex->handle  = _ksys_futex_create(mutex);
 }
 
 void __gthr_kos32_mutex_destroy (__gthread_mutex_t *mutex)
 {
     int retval;
-
-    __asm__ volatile(
-    "int $0x40\t"
-    :"=a"(retval)
-    :"a"(77),"b"(FUTEX_DESTROY),"c"(mutex->handle));
+    _ksys_futex_destroy(mutex->handle);
 }
 
 int __gthr_kos32_mutex_lock (__gthread_mutex_t *mutex)
@@ -122,13 +148,9 @@ int __gthr_kos32_mutex_lock (__gthread_mutex_t *mutex)
 
     while (exchange_acquire (&mutex->lock, 2) != 0)
     {
-        __asm__ volatile(
-        "int $0x40\t\n"
-        :"=a"(tmp)
-        :"a"(77),"b"(FUTEX_WAIT),
-        "c"(mutex->handle),"d"(2),"S"(0));
-   }
-   return 0;
+        _ksys_futex_wait(mutex->handle, 2 , 0);
+    }
+    return 0;
 }
 
 int __gthr_kos32_mutex_trylock (__gthread_mutex_t *mutex)
@@ -146,11 +168,7 @@ int __gthr_kos32_mutex_unlock (__gthread_mutex_t *mutex)
 
     if (prev != 1)
     {
-        __asm__ volatile(
-        "int $0x40\t"
-        :"=a"(prev)
-        :"a"(77),"b"(FUTEX_WAKE),
-        "c"(mutex->handle),"d"(1));
+        _ksys_futex_wake(mutex->handle, 1);
     };
     return 0;
 }
@@ -158,14 +176,9 @@ int __gthr_kos32_mutex_unlock (__gthread_mutex_t *mutex)
 void __gthr_kos32_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
 {
     int handle;
-
     mutex->lock = 0;
 
-    __asm__ volatile(
-    "int $0x40\t"
-    :"=a"(handle)
-    :"a"(77),"b"(FUTEX_INIT),"c"(mutex));
-    mutex->handle = handle;
+    mutex->handle = _ksys_futex_create(mutex);
 
     mutex->depth = 0;
     mutex->owner = 0;
@@ -190,11 +203,7 @@ int __gthr_kos32_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
     }
     else while (exchange_acquire (&mutex->lock, 2) != 0)
     {
-        __asm__ volatile(
-        "int $0x40\t\n"
-        :"=a"(tmp)
-        :"a"(77),"b"(FUTEX_WAIT),
-        "c"(mutex->handle),"d"(2),"S"(0));
+        _ksys_futex_wait(mutex->handle, 2, 0);
         mutex->depth = 1;
         mutex->owner = me;
     };
@@ -232,11 +241,7 @@ int __gthr_kos32_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
 
         if (prev != 1)
         {
-            __asm__ volatile(
-            "int $0x40\t"
-            :"=a"(prev)
-            :"a"(77),"b"(FUTEX_WAKE),
-            "c"(mutex->handle),"d"(1));
+            _ksys_futex_wake(mutex->handle, 1);
         };
         mutex->owner = 0;
     };
@@ -247,12 +252,7 @@ int __gthr_kos32_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
 int __gthr_kos32_recursive_mutex_destroy (__gthread_recursive_mutex_t *mutex)
 {
     int retval;
-
-    __asm__ volatile(
-    "int $0x40\t"
-    :"=a"(retval)
-    :"a"(77),"b"(FUTEX_DESTROY),"c"(mutex->handle));
-
+    _ksys_futex_destroy(mutex->handle);
     return 0;
 }
 
diff --git a/contrib/sdk/sources/newlib/libc/include/sys/ksys.h b/contrib/sdk/sources/newlib/libc/include/sys/ksys.h
index 8fa44cfbfd..b4ca6914ab 100644
--- a/contrib/sdk/sources/newlib/libc/include/sys/ksys.h
+++ b/contrib/sdk/sources/newlib/libc/include/sys/ksys.h
@@ -22,6 +22,10 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define KOSAPI     static inline
 #define asm_inline __asm__ __volatile__
 
@@ -1617,7 +1621,7 @@ KOSAPI void _ksys_set_window_title(const char* title)
 
 /*============= Function 77, subfunction 0 - create futex object =============*/
 
-KOSAPI uint32_t _ksys_futex_create(int* futex_ctrl)
+KOSAPI uint32_t _ksys_futex_create(void* futex_ctrl)
 {
     uint32_t futex_desc;
     asm_inline(
@@ -1722,4 +1726,8 @@ static inline int _ksys_file_write_file(const char* name, unsigned long long off
     return res.status;
 }
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif // _KSYS_H_
diff --git a/contrib/sdk/sources/newlib/libc/pe/crtloader.c b/contrib/sdk/sources/newlib/libc/pe/crtloader.c
index 4063598039..64e687d209 100644
--- a/contrib/sdk/sources/newlib/libc/pe/crtloader.c
+++ b/contrib/sdk/sources/newlib/libc/pe/crtloader.c
@@ -6,7 +6,7 @@
 #include <setjmp.h>
 #include <envz.h>
 
-#include <kos32sys.h>
+#include <sys/ksys.h>
 
 #include "list.h"
 #include "pe.h"
@@ -97,7 +97,7 @@ void* create_image(void *raw)
     dos = (PIMAGE_DOS_HEADER)raw;
     nt =  MakePtr( PIMAGE_NT_HEADERS32, dos, dos->e_lfanew);
 
-    img_base = user_alloc(nt->OptionalHeader.SizeOfImage);
+    img_base = _ksys_alloc(nt->OptionalHeader.SizeOfImage);
 
     if(unlikely(img_base == NULL))
         return 0;
@@ -196,9 +196,9 @@ void* load_libc()
     void     *raw_img;
     size_t    raw_size;
     void     *img_base = NULL;
-    ufile_t   uf;
+    ksys_ufile_t   uf;
 
-    uf = load_file("/kolibrios/lib/libc.dll");
+    uf = _ksys_load_file("/kolibrios/lib/libc.dll");
 
     raw_img   = uf.data;
     raw_size  = uf.size;
@@ -214,7 +214,7 @@ void* load_libc()
         img_base = create_image(raw_img);
     };
 
-    user_free(raw_img);
+    _ksys_free(raw_img);
 
     return img_base;
 
diff --git a/contrib/sdk/sources/newlib/libc/pe/loader.c b/contrib/sdk/sources/newlib/libc/pe/loader.c
index 7cbcf7d159..9c691eab58 100644
--- a/contrib/sdk/sources/newlib/libc/pe/loader.c
+++ b/contrib/sdk/sources/newlib/libc/pe/loader.c
@@ -7,7 +7,7 @@
 #include <setjmp.h>
 #include <envz.h>
 
-#include <kos32sys.h>
+#include <sys/ksys.h>
 
 #include "list.h"
 #include "pe.h"
@@ -22,6 +22,7 @@
 void    init_loader(void *libc_image);
 void*   create_image(void *raw);
 int     link_image(void *img_base, PIMAGE_IMPORT_DESCRIPTOR imp);
+void*   load_library(const char *name);
 
 extern char* __appenv;
 extern int   __appenv_size;
@@ -266,7 +267,7 @@ void* create_image(void *raw)
     dos = (PIMAGE_DOS_HEADER)raw;
     nt =  MakePtr( PIMAGE_NT_HEADERS32, dos, dos->e_lfanew);
 
-    img_base = user_alloc(nt->OptionalHeader.SizeOfImage);
+    img_base = _ksys_alloc(nt->OptionalHeader.SizeOfImage);
 
     if(unlikely(img_base == NULL))
         return 0;
@@ -651,12 +652,12 @@ static void *load_lib_internal(const char *path)
     PIMAGE_NT_HEADERS32      nt;
     PIMAGE_EXPORT_DIRECTORY  exp;
 
-    ufile_t   uf;
+    ksys_ufile_t   uf;
     void     *raw_img;
     size_t    raw_size;
     void     *img_base = NULL;
 
-    uf = load_file(path);
+    uf = _ksys_load_file(path);
     raw_img  = uf.data;
     raw_size = uf.size;
 
@@ -666,12 +667,12 @@ static void *load_lib_internal(const char *path)
     if( validate_pe(raw_img, raw_size, 0) == 0)
     {
         printf("invalide module %s\n", path);
-        user_free(raw_img);
+        _ksys_free(raw_img);
         return NULL;
     };
 
     img_base = create_image(raw_img);
-    user_free(raw_img);
+    _ksys_free(raw_img);
 
     if( unlikely(img_base == NULL) )
         printf("cannot create image %s\n",path);
@@ -797,7 +798,7 @@ err2:
     free(module->img_path);
     free(module);
 err1:
-    user_free(img_base);
+    _ksys_free(img_base);
     return NULL;
 };
 
diff --git a/contrib/sdk/sources/newlib/libc/reent/getreent.c b/contrib/sdk/sources/newlib/libc/reent/getreent.c
index 0987729471..2cbdbedcc4 100644
--- a/contrib/sdk/sources/newlib/libc/reent/getreent.c
+++ b/contrib/sdk/sources/newlib/libc/reent/getreent.c
@@ -3,7 +3,7 @@
 #include <_ansi.h>
 #include <string.h>
 #include <sys/reent.h>
-#include <kos32sys.h>
+#include <sys/ksys.h>
 
 extern _VOID   _EXFUN(__sinit,(struct _reent *));
 
@@ -11,7 +11,7 @@ void init_reent()
 {
     struct _reent *ent;
 
-    ent = user_alloc(sizeof(struct _reent));
+    ent = _ksys_alloc(sizeof(struct _reent));
 
     _REENT_INIT_PTR_ZEROED(ent);
 
diff --git a/contrib/sdk/sources/newlib/libc/stdlib/mallocr.c b/contrib/sdk/sources/newlib/libc/stdlib/mallocr.c
index dd8746540e..55d7b92c9f 100644
--- a/contrib/sdk/sources/newlib/libc/stdlib/mallocr.c
+++ b/contrib/sdk/sources/newlib/libc/stdlib/mallocr.c
@@ -36,7 +36,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-
+#include <sys/ksys.h>
 
 
 struct malloc_chunk {
@@ -60,33 +60,8 @@ typedef unsigned int flag_t;           /* The type of various bit flag sets */
 /* The maximum possible size_t value has all bits set */
 #define MAX_SIZE_T           (~(size_t)0)
 
-void *user_alloc(size_t size)
-{
-    void  *val;
-
-//    __asm__("int3");
-
-    __asm__ __volatile__(
-    "int $0x40"
-    :"=a"(val)
-    :"a"(68),"b"(12),"c"(size));
-    return val;
-}
-
-static inline
-int user_free(void *mem)
-{
-    int  val;
-
-//    __asm__("int3");
-
-    __asm__ __volatile__(
-    "int $0x40"
-    :"=a"(val)
-    :"a"(68),"b"(13),"c"(mem));
-    return val;
-}
-
+#define user_alloc(s) _ksys_alloc(s)
+#define user_free _ksys_free
 
 /* ------------------- size_t and alignment properties -------------------- */
 
diff --git a/contrib/sdk/sources/newlib/libc/sys/clock_gettime.c b/contrib/sdk/sources/newlib/libc/sys/clock_gettime.c
index f5860d0376..f5eab820ed 100644
--- a/contrib/sdk/sources/newlib/libc/sys/clock_gettime.c
+++ b/contrib/sdk/sources/newlib/libc/sys/clock_gettime.c
@@ -20,14 +20,14 @@
 #include <stdint.h>
 #include <time.h>
 #include <sys/time.h>
-#include <kos32sys.h>
+#include <sys/ksys.h>
 
 /* Get current value of CLOCK and store it in TP.  */
 int clock_gettime (clockid_t clock_id, struct timespec *tp)
 {
     uint64_t tsc;
 
-    tsc = get_ns_count();
+    tsc = _ksys_get_ns_count();
 
     tp->tv_sec = tsc / 1000000000;
     tp->tv_nsec = tsc % 1000000000;