From: mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Sat, 6 Oct 2007 21:53:01 +0000 (+0000)
Subject: Return buffer in rax
X-Git-Tag: edk2-stable201903~21993
X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=b3ad302e0feaa203b2ae4cb4b9dc13bbd3fd9efe

Return buffer in rax


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4032 6f19259b-4bc3-4df7-8a09-765794883524
---

diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem.asm b/MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem.asm
index 5306520169..2c9b211516 100644
--- a/MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem.asm
+++ b/MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem.asm
@@ -33,11 +33,12 @@
 ;    )
 ;------------------------------------------------------------------------------
 InternalMemSetMem   PROC    USES    rdi
-    mov     rax, r8
-    mov     rdi, rcx
-    xchg    rcx, rdx
+    push    rcx        ; push Buffer
+    mov     rax, r8    ; rax = Value
+    mov     rdi, rcx   ; rdi = Buffer
+    mov     rcx, rdx   ; rcx = Count
     rep     stosb
-    mov     rax, rdx
+    pop     rax        ; rax = Buffer
     ret
 InternalMemSetMem   ENDP