Return buffer in rax

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4032 6f19259b-4bc3-4df7-8a09-765794883524
2007-10-06 21:53:01 +00:00 · 2007-10-06 21:53:01 +00:00 · b3ad302e0f
parent a326286cb1
commit b3ad302e0f
1 changed files with 5 additions and 4 deletions
--- 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