update for HEAD-2003091401

[reactos.git] / lib / ntdll / nasm / rtl / i386_RtlFillMemoryUlong.asm

diff --git a/lib/ntdll/nasm/rtl/i386_RtlFillMemoryUlong.asm b/lib/ntdll/nasm/rtl/i386_RtlFillMemoryUlong.asm
new file mode 100644 (file)
index 0000000..05509f1
--- /dev/null
+++ b/lib/ntdll/nasm/rtl/i386_RtlFillMemoryUlong.asm
@@ -0,0 +1,38 @@
+; * base on ntdll/rtl/mem.c v 1.13 2003/07/11 13:50:23 
+; * 
+; * COPYRIGHT:       See COPYING in the top level directory
+; * PROJECT:         ReactOS kernel
+; * FILE:            i386_RtlMemoryUlong.asm
+; * PURPOSE:         Memory functions
+; * PROGRAMMER:      Magnus Olsen (magnusolsen@greatlord.com)
+; * UPDATE HISTORY:
+; *                  Created 20/07-2003
+; * 
+
+  
+
+        BITS 32
+        GLOBAL _RtlFillMemoryUlong@12    ; (no bug) (max optimze code)  
+        
+        SECTION .text
+
+
+
+
+; * 
+; * VOID STDCALL RtlFillMemoryUlong (PVOID Destination, ULONG Length, ULONG Fill)
+; * 
+
+_RtlFillMemoryUlong@12:
+        mov ecx, dword [esp + 8 ]                   ; Length                                       
+        shr ecx,2                                   ; Length = Length / sizeof(ULONG) 
+         jz .zero                                    ; if (Length==0) goto .zero
+         
+        push edi
+        mov edi, dword [esp + (4 + 4)]             ; Destination
+        mov eax, dword [esp + (12 + 4)]            ; Fill       
+        cld                                      
+        rep stosd                                  ; while (Length>0) {Destination[Length-1]=Fill; Length = Length - 1}
+        pop edi
+.zero:
+        ret 12