diff --git a/kernel/libthr/thr_stack.pas b/kernel/libthr/thr_stack.pas
index 3919f4e3..e930660f 100644
--- a/kernel/libthr/thr_stack.pas
+++ b/kernel/libthr/thr_stack.pas
@@ -16,6 +16,9 @@ procedure _thr_stack_free(attr:p_pthread_attr);
 
 implementation
 
+uses
+ sys_mmap;
+
 type
  //Spare thread stack.
  p_stack=^t_stack;
@@ -40,12 +43,15 @@ begin
  Result:=size;
 end;
 
+const
+ _rtld_get_stack_prot=PROT_READ or PROT_WRITE;
+
 procedure _thr_stack_fix_protection(td:p_pthread);
 begin
- //mprotect(td^.attr.stackaddr_attr+
- //         round_up(td^.attr.guardsize_attr),
- //         round_up(td^.attr.stacksize_attr),
- //        _rtld_get_stack_prot);
+ mprotect(td^.attr.stackaddr_attr+
+          round_up(td^.attr.guardsize_attr),
+          round_up(td^.attr.stacksize_attr),
+         _rtld_get_stack_prot);
 end;
 
 function _thr_stack_alloc(attr:p_pthread_attr):Integer;
@@ -109,28 +115,28 @@ begin
 
   THREAD_LIST_UNLOCK(curthread);
 
-  //stackaddr:=mmap(stackaddr,
-  //                stacksize+guardsize,
-  //                _rtld_get_stack_prot,
-  //                MAP_STACK,-1,0
-  //               );
+  stackaddr:=mmap(stackaddr,
+                  stacksize+guardsize,
+                  _rtld_get_stack_prot,
+                  MAP_STACK,-1,0
+                 );
 
   r:=0;
-  if (stackaddr<>Pointer(-1)) then //MAP_FAILED
+  if (stackaddr<>MAP_FAILED) then
   begin
-   //r:=mprotect(stackaddr,guardsize,PROT_NONE);
+   r:=mprotect(stackaddr,guardsize,PROT_NONE);
   end;
 
-  if (stackaddr<>Pointer(-1)) and  //MAP_FAILED
+  if (stackaddr<>MAP_FAILED) and
      ((guardsize=0) or (r=0)) then
   begin
-   //sceKernelSetVirtualRangeName(addr,guardsize,'stack guard');
+   sceKernelSetVirtualRangeName(stackaddr,guardsize,'stack guard');
    stackaddr:=stackaddr+guardsize;
   end else
   begin
-   if (stackaddr<>Pointer(-1)) then  //MAP_FAILED
+   if (stackaddr<>MAP_FAILED) then
    begin
-    //munmap(stackaddr,stacksize+guardsize);
+    munmap(stackaddr,stacksize+guardsize);
    end;
    stackaddr:=nil;
   end;
diff --git a/sys/errno.pas b/sys/errno.pas
index 6ceda038..5c1775b5 100644
--- a/sys/errno.pas
+++ b/sys/errno.pas
@@ -8,9 +8,10 @@ interface
 {$I sce_errno.inc}
 {$I errno.inc}
 
-function px2sce(e:Integer):Integer;
-function sce2px(e:Integer):Integer;
+function px2sce(e:Integer):Integer; inline;
+function sce2px(e:Integer):Integer; inline;
 
+function _get_errno:Integer; inline;
 function _set_errno(r:Integer):Integer;
 function _set_sce_errno(r:Integer):Integer;
 
@@ -19,7 +20,7 @@ implementation
 uses
  thr_error;
 
-function px2sce(e:Integer):Integer;
+function px2sce(e:Integer):Integer; inline;
 begin
  if (e=0) then
   Result:=0
@@ -27,7 +28,7 @@ begin
   Result:=e-$7ffe0000;
 end;
 
-function sce2px(e:Integer):Integer;
+function sce2px(e:Integer):Integer; inline;
 begin
  if (e=0) then
   Result:=0
@@ -35,6 +36,11 @@ begin
   Result:=e+$7ffe0000;
 end;
 
+function _get_errno:Integer; inline;
+begin
+ Result:=__error^;
+end;
+
 function _set_errno(r:Integer):Integer;
 begin
  Result:=0;
diff --git a/sys/sys_mmap.pas b/sys/sys_mmap.pas
index d1e684f5..c6b56dc9 100644
--- a/sys/sys_mmap.pas
+++ b/sys/sys_mmap.pas
@@ -91,11 +91,16 @@ function madvise(addr:Pointer;len:QWORD;behav:Integer):Integer;
 function mname(addr:Pointer;len:QWORD;name:PChar):Integer;
 function query_memory_protection(addr:Pointer;len:QWORD;info:p_query_memory_prot):Integer;
 
+//sce
+
+function sceKernelSetVirtualRangeName(addr:Pointer;len:QWORD;name:PChar):Integer;
+
 implementation
 
 uses
  trap,
- thr_error;
+ thr_error,
+ errno;
 
 function mmap(_addr :Pointer;
               _len  :QWORD;
@@ -144,6 +149,17 @@ asm
  call  cerror
 end;
 
+//sce
+
+function sceKernelSetVirtualRangeName(addr:Pointer;len:QWORD;name:PChar):Integer;
+begin
+ Result:=mname(addr,len,name);
+ if (Result=-1) then
+ begin
+  Result:=px2sce(_get_errno);
+ end;
+end;
+
 
 end.
 
diff --git a/sys/test/project1.lpr b/sys/test/project1.lpr
index 42ccdcb5..f9c7e01e 100644
--- a/sys/test/project1.lpr
+++ b/sys/test/project1.lpr
@@ -87,6 +87,8 @@ begin
  Result:=query_memory_protection(Pointer($700000000),16*1024,@qr);
  Writeln(Result);
 
+ sceKernelSetVirtualRangeName(Pointer($700000000),16*1024,'test');
+
  p:=mmap(Pointer($700000000+16*1024),16*1024,PROT_CPU_ALL,MAP_ANON {or MAP_VOID} or MAP_FIXED,-1,0);
  Writeln(HexStr(p));