X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdePkg%2FLibrary%2FBaseMemoryLibMmx%2FX64%2FSetMem64.asm;h=454d6234bff62fd561a0bc65734225dfd9a16d31;hb=eb227e96bd06a5b0f2f933187a679e7fb3382cd9;hp=5780647445eedb4f2252b931ecc4d108143f7c0e;hpb=27169a56e67556796ab0410c8917436dc9aa2abf;p=mirror_edk2.git

diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.asm
index 5780647445..454d6234bf 100644
--- a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.asm
+++ b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.asm
@@ -23,14 +23,21 @@
 
     .code
 
-InternalMemSetMem64 PROC    USES    rdi
-    DB      49h, 0fh, 6eh, 0c0h;  movq    mm0, r8       ; mm0 <- Value
-    mov     rax, rcx                                    ; rax <- Buffer
-    xchg    rcx, rdx                                    ; rcx <- Count
-    mov     rdi, rax
+;------------------------------------------------------------------------------
+;  VOID *
+;  InternalMemSetMem64 (
+;    IN VOID   *Buffer,
+;    IN UINTN  Count,
+;    IN UINT64 Value
+;    )
+;------------------------------------------------------------------------------
+InternalMemSetMem64 PROC
+    DB      49h, 0fh, 6eh, 0c0h         ; movd mm0, r8 (Value)
+    mov     rax, rcx                    ; rax <- Buffer
+    xchg    rcx, rdx                    ; rcx <- Count
 @@:
-    DB      48h, 0fh, 0e7h, 07h;  movntq  [rdi], mm0
-    add     rdi, 8
+    DB      0fh, 0e7h, 02h              ; movntq  [rdx], mm0
+    add     rdx, 8
     loop    @B
     mfence
     ret