diff --git a/kernel/ps4_libkernel.pas b/kernel/ps4_libkernel.pas
index c87808cc..5f793fc3 100644
--- a/kernel/ps4_libkernel.pas
+++ b/kernel/ps4_libkernel.pas
@@ -167,7 +167,7 @@ end;
 function ps4_sceKernelGetProcParam:Pointer; SysV_ABI_CDecl;
 begin
  Writeln('KernelGetProcParam');
- Result:=GetProcParam;
+ Result:=GetSceProcParam;
 end;
 
 type
@@ -245,7 +245,7 @@ var
 begin
  Result:=SCE_KERNEL_ERROR_EINVAL;
  if (sdkVersion=nil) then Exit;
- P:=GetProcParam;
+ P:=GetSceProcParam;
 
  if (P<>nil) then
  if (P^.Header.Size>$13) then
diff --git a/kernel/ps4_pthread.pas b/kernel/ps4_pthread.pas
index 919eaada..d5e60e81 100644
--- a/kernel/ps4_pthread.pas
+++ b/kernel/ps4_pthread.pas
@@ -89,7 +89,7 @@ function  ps4_pthread_key_delete(Key:pthread_key_t):Integer; SysV_ABI_CDecl;
 function  ps4_pthread_getspecific(Key:pthread_key_t):Pointer; SysV_ABI_CDecl;
 function  ps4_pthread_setspecific(Key:pthread_key_t;value:Pointer):Integer; SysV_ABI_CDecl;
 
-function  _pthread_run_entry(pthread:p_pthread):Integer;
+function  _pthread_run_entry(pthread:p_pthread;name:Pchar;stack:PDWORD):Integer;
 
 implementation
 
@@ -400,14 +400,28 @@ end;
 
 const
  default_name:Pchar='main';
+ default_stack:Integer=DefaultStackSize;
 
-function _pthread_run_entry(pthread:p_pthread):Integer;
+function _pthread_run_entry(pthread:p_pthread;name:Pchar;stack:PDWORD):Integer;
 var
  attr:pthread_attr_t;
 begin
+ if (name=nil) then
+ begin
+  name:=default_name;
+ end;
+ if (stack=nil) then
+ begin
+  stack:=@default_stack;
+ end else
+ if (stack^<PTHREAD_STACK_MIN) then
+ begin
+  stack:=@default_stack;
+ end;
+
  ps4_pthread_attr_init(@attr);
- ps4_pthread_attr_setstacksize(@attr,DefaultStackSize);
- Result:=ps4_scePthreadCreate(pthread,@attr,@on_ps4_run_entry,nil,default_name);
+ ps4_pthread_attr_setstacksize(@attr,stack^);
+ Result:=ps4_scePthreadCreate(pthread,@attr,@on_ps4_run_entry,nil,name);
  ps4_pthread_attr_destroy(@attr);
 end;
 
diff --git a/ps4_elf.pas b/ps4_elf.pas
index e6af1a94..569d7c6a 100644
--- a/ps4_elf.pas
+++ b/ps4_elf.pas
@@ -67,25 +67,25 @@ type
  TSceLibcParam=packed record
   Size:QWORD;
   Unknown1:QWORD; //10000000c
-  sceLibcHeapSize:PQWORD;
-  sceLibcHeapDelayedAlloc:PQWORD;
-  sceLibcHeapExtendedAlloc:PQWORD;
-  sceLibcHeapInitialSize:PQWORD;
+  sceLibcHeapSize:PDWORD;
+  sceLibcHeapDelayedAlloc:PDWORD;
+  sceLibcHeapExtendedAlloc:PDWORD;
+  sceLibcHeapInitialSize:PDWORD;
   _sceLibcMallocReplace:PsceLibcMallocReplace;
   _sceLibcNewReplace:PsceLibcNewReplace;
   sceLibcHeapHighAddressAlloc:PQWORD;
-  Need_sceLibc:PQWORD;
+  Need_sceLibc:PDWORD;
   sceLibcHeapMemoryLock:PQWORD;
   sceKernelInternalMemorySize:PQWORD;
   _sceLibcMallocReplaceForTls:PsceLibcMallocReplaceForTls;
   Unknown2:QWORD;
   sceLibcHeapDebugFlags:PQWORD;
-  sceLibcStdThreadStackSize:PQWORD;
+  sceLibcStdThreadStackSize:PDWORD;
   Unknown3:QWORD;
-  sceKernelInternalMemoryDebugFlags:PQWORD;
-  sceLibcWorkerThreadNum:PQWORD;
-  sceLibcWorkerThreadPriority:PQWORD;
-  sceLibcThreadUnnamedObjects:PQWORD;
+  sceKernelInternalMemoryDebugFlags:PDWORD;
+  sceLibcWorkerThreadNum:PDWORD;
+  sceLibcWorkerThreadPriority:PDWORD;
+  sceLibcThreadUnnamedObjects:PDWORD;
  end;
 
  PSceKernelMemParam=^TSceKernelMemParam;
@@ -110,17 +110,17 @@ type
   Header:packed record
    Size:QWORD;        //0x50
    Magic:DWORD;       //"ORBI" //0x4942524F
-   Entry_count:DWORD;
+   Entry_count:DWORD; //>=1
    SDK_version:QWORD; //0x4508101
   end;
   sceProcessName:PChar;
   sceUserMainThreadName:PChar;
-  sceUserMainThreadPriority:PQWORD;
-  sceUserMainThreadStackSize:PQWORD;
+  sceUserMainThreadPriority:PDWORD;
+  sceUserMainThreadStackSize:PDWORD;
   _sceLibcParam     :PSceLibcParam;
   _sceKernelMemParam:PSceKernelMemParam;
   _sceKernelFsParam :PSceKernelFsParam;
-  sceProcessPreloadEnabled:PQWORD;
+  sceProcessPreloadEnabled:PDWORD;
  end;
 
  Telf_file=class;
diff --git a/ps4_program.pas b/ps4_program.pas
index 37551b93..52560094 100644
--- a/ps4_program.pas
+++ b/ps4_program.pas
@@ -173,7 +173,11 @@ Function  UnMountPath(path:PChar):Integer;
 
 function  _parse_filename(filename:PChar):RawByteString;
 
-function  GetProcParam:Pointer;
+function  GetSceProcParam:Pointer;
+function  GetSceUserMainThreadName:PChar;
+function  GetSceUserMainThreadPriority:PDWORD;
+function  GetSceUserMainThreadStackSize:PDWORD;
+
 Function  get_dev_progname:RawByteString;
 
 implementation
@@ -1501,7 +1505,7 @@ begin
  rwlock_unlock(lock);
 end;
 
-function GetProcParam:Pointer;
+function GetSceProcParam:Pointer;
 var
  elf:Telf_file;
 begin
@@ -1512,6 +1516,48 @@ begin
  Result:=elf.mMap.pAddr+elf.pProcParam;
 end;
 
+function GetSceUserMainThreadName:PChar;
+var
+ p:PSceProcParam;
+begin
+ Result:=nil;
+ p:=GetSceProcParam;
+ if (p=nil) then Exit;
+
+ if (P^.Header.Size>=qword(@PSceProcParam(nil)^.sceUserMainThreadName)+SizeOf(Pointer)) then
+ begin
+  Result:=p^.sceUserMainThreadName;
+ end;
+end;
+
+function GetSceUserMainThreadPriority:PDWORD;
+var
+ p:PSceProcParam;
+begin
+ Result:=nil;
+ p:=GetSceProcParam;
+ if (p=nil) then Exit;
+
+ if (P^.Header.Size>=qword(@PSceProcParam(nil)^.SceUserMainThreadPriority)+SizeOf(Pointer)) then
+ begin
+  Result:=p^.SceUserMainThreadPriority;
+ end;
+end;
+
+function GetSceUserMainThreadStackSize:PDWORD;
+var
+ p:PSceProcParam;
+begin
+ Result:=nil;
+ p:=GetSceProcParam;
+ if (p=nil) then Exit;
+
+ if (P^.Header.Size>=qword(@PSceProcParam(nil)^.SceUserMainThreadStackSize)+SizeOf(Pointer)) then
+ begin
+  Result:=p^.SceUserMainThreadStackSize;
+ end;
+end;
+
 Function get_dev_progname:RawByteString;
 begin
  Result:='';