1. Added comments to ASM files

[mirror_edk2.git] / MdePkg / Library / BaseLib / X64 / ReadMm6.asm

diff --git a/MdePkg/Library/BaseLib/X64/ReadMm6.asm b/MdePkg/Library/BaseLib/X64/ReadMm6.asm
index acdc99b888adddd14229cebf2944d4ed79de6e0a..4e1f2a824bb992a4650bf0512645bf5f2d98d188 100644 (file)
--- a/MdePkg/Library/BaseLib/X64/ReadMm6.asm
+++ b/MdePkg/Library/BaseLib/X64/ReadMm6.asm
@@ -31,6 +31,9 @@
 ;   );\r
 ;------------------------------------------------------------------------------\r
 AsmReadMm6  PROC\r
+    ;\r
+    ; 64-bit MASM doesn't support MMX instructions, so use opcode here\r
+    ;\r
     DB      48h, 0fh, 7eh, 0f0h\r
     ret\r
 AsmReadMm6  ENDP\r