INF file verified, and Coding Style reviewed.

[mirror_edk2.git] / MdePkg / Library / BaseLib / X64 / WriteMm4.asm

diff --git a/MdePkg/Library/BaseLib/X64/WriteMm4.asm b/MdePkg/Library/BaseLib/X64/WriteMm4.asm
index 2a69b93bcc7112b6303890af261a1f0d31cfef0c..6848dbf7ec085b7495bee1f7a30b6710d9ecdc6a 100644 (file)
--- a/MdePkg/Library/BaseLib/X64/WriteMm4.asm
+++ b/MdePkg/Library/BaseLib/X64/WriteMm4.asm
@@ -24,13 +24,16 @@
     .code\r
 \r
 ;------------------------------------------------------------------------------\r
-; UINTN\r
+; VOID\r
 ; EFIAPI\r
 ; AsmWriteMm4 (\r
-;   VOID\r
+;   IN UINT64   Value\r
 ;   );\r
 ;------------------------------------------------------------------------------\r
 AsmWriteMm4 PROC\r
+    ;\r
+    ; 64-bit MASM doesn't support MMX instructions, so use opcode here\r
+    ;\r
     DB      48h, 0fh, 6eh, 0e1h\r
     ret\r
 AsmWriteMm4 ENDP\r