diff --git a/programs/develop/libraries/newlib/crt/chkstk.S b/programs/develop/libraries/newlib/crt/chkstk.S
index 405dfc6eb2..4df1b52786 100644
--- a/programs/develop/libraries/newlib/crt/chkstk.S
+++ b/programs/develop/libraries/newlib/crt/chkstk.S
@@ -1,11 +1,14 @@
 
 .global ___chkstk
+.global ___chkstk_ms
 .global __alloca
 
 .section .text
 
-#.def	___chkstk;	.scl	2;	.type	32;	.endef 
-#.def	__alloca;	.scl	2;	.type	32;	.endef 
+#.def	___chkstk;	.scl	2;	.type	32;	.endef
+#.def ___chkstk_ms;  .scl  2;  .type 32; .endef
+#.def __alloca; .scl  2;  .type 32; .endef
+
 ___chkstk:
 __alloca:
         pushl   %ecx            /* save temp */
@@ -29,3 +32,30 @@ __alloca:
         .ascii "Stack overflow"
 
 
+___chkstk_ms:
+       pushl  %ecx            /* save temp */
+       pushl  %eax
+       cmpl $0x1000, %eax     /* > 4k ?*/
+       leal 12(%esp), %ecx    /* point past return addr */
+       jb 2f
+
+1:
+       subl $0x1000, %ecx     /* yes, move pointer down 4k*/
+       cmpl %fs:4, %ecx       /* check low stack limit    */
+       jb 3f
+
+       orl $0x0, (%ecx)       /* probe there */
+       subl $0x1000, %eax     /* decrement count */
+       cmpl $0x1000, %eax
+       ja 1b                  /* and do it again */
+
+2:
+       subl %eax, %ecx
+       orl $0x0, (%ecx) /* less than 4k, just peek here */
+
+       popl %eax
+       popl %ecx
+       ret
+3:
+       int3                    #trap to debugger
+       .ascii "Stack overflow"
diff --git a/programs/develop/libraries/newlib/crt/emutls.c b/programs/develop/libraries/newlib/crt/emutls.c
index c9a6907309..77485e1422 100644
--- a/programs/develop/libraries/newlib/crt/emutls.c
+++ b/programs/develop/libraries/newlib/crt/emutls.c
@@ -25,7 +25,6 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 
 
 #include <stdlib.h>
-#include <memory.h>
 #include <malloc.h>
 #include <errno.h>
 #include <gthr.h>
diff --git a/programs/develop/libraries/newlib/include/stdint.h b/programs/develop/libraries/newlib/include/stdint.h
index ccf46b17a6..f15f735081 100644
--- a/programs/develop/libraries/newlib/include/stdint.h
+++ b/programs/develop/libraries/newlib/include/stdint.h
@@ -35,6 +35,7 @@ extern "C" {
 #define __have_long64 1
 #elif __STDINT_EXP(LONG_MAX) == 0x7fffffff && !defined(__SPU__)
 #define __have_long32 1
+#define __have_long64 0
 #endif
 
 #if __STDINT_EXP(SCHAR_MAX) == 0x7f
@@ -177,6 +178,8 @@ typedef uint64_t  	uint_least32_t;
   typedef signed int int_fast64_t;
   typedef unsigned int uint_fast64_t;
 #define __int_fast64_t_defined 1
+#else
+#define __int_fast64_t_defined 0
 #endif
 
 /*
@@ -212,6 +215,7 @@ typedef uint64_t  	uint_least32_t;
 #if __int_least64_t_defined
   typedef int_least64_t int_fast64_t;
   typedef uint_least64_t uint_fast64_t;
+#undef  __int_fast64_t_defined
 #define __int_fast64_t_defined 1
 #endif
 #endif
diff --git a/programs/develop/libraries/newlib/include/sys/_default_fcntl.h b/programs/develop/libraries/newlib/include/sys/_default_fcntl.h
index 396208bbb0..cf9c9be479 100644
--- a/programs/develop/libraries/newlib/include/sys/_default_fcntl.h
+++ b/programs/develop/libraries/newlib/include/sys/_default_fcntl.h
@@ -42,6 +42,15 @@ extern "C" {
 /*	O_NDELAY	_FNBIO 		set in include/fcntl.h */
 #define	O_NONBLOCK	_FNONBLOCK
 #define	O_NOCTTY	_FNOCTTY
+
+#define _FBINARY        0x10000
+#define _FTEXT          0x20000
+#define _FNOINHERIT 0x40000
+
+#define O_BINARY    _FBINARY
+#define O_TEXT      _FTEXT
+#define O_NOINHERIT _FNOINHERIT
+
 /* For machines which care - */
 #if defined (_WIN32) || defined (__CYGWIN__)
 #define _FBINARY        0x10000
diff --git a/programs/develop/libraries/newlib/include/sys/kos_io.h b/programs/develop/libraries/newlib/include/sys/kos_io.h
index 373d341a26..ff967c1eec 100644
--- a/programs/develop/libraries/newlib/include/sys/kos_io.h
+++ b/programs/develop/libraries/newlib/include/sys/kos_io.h
@@ -73,7 +73,7 @@ static inline int user_free(void *mem)
     int  val;
     __asm__ __volatile__(
     "int $0x40"
-    :"=eax"(val)
+    :"=a"(val)
     :"a"(68),"b"(12),"c"(mem));
     return val;
 }
diff --git a/programs/develop/libraries/newlib/stdlib/mallocr.c b/programs/develop/libraries/newlib/stdlib/mallocr.c
index 9e7aecba0f..cff67ed419 100644
--- a/programs/develop/libraries/newlib/stdlib/mallocr.c
+++ b/programs/develop/libraries/newlib/stdlib/mallocr.c
@@ -68,7 +68,7 @@ void *user_alloc(size_t size)
 
     __asm__ __volatile__(
     "int $0x40"
-    :"=eax"(val)
+    :"=a"(val)
     :"a"(68),"b"(12),"c"(size));
     return val;
 }
@@ -82,7 +82,7 @@ int user_free(void *mem)
 
     __asm__ __volatile__(
     "int $0x40"
-    :"=eax"(val)
+    :"=a"(val)
     :"a"(68),"b"(13),"c"(mem));
     return val;
 }