1. Added comments to ASM files

[mirror_edk2.git] / MdePkg / Library / BaseLib / X64 / ReadMm7.asm

diff --git a/MdePkg/Library/BaseLib/X64/ReadMm7.asm b/MdePkg/Library/BaseLib/X64/ReadMm7.asm
index 7a1b4e6111abefcd2e30ed33f5eb5b2c968b4894..d871a9f8dcd79763e6d274208472d46156f3e830 100644 (file)
--- a/MdePkg/Library/BaseLib/X64/ReadMm7.asm
+++ b/MdePkg/Library/BaseLib/X64/ReadMm7.asm
@@ -31,6 +31,9 @@
 ;   );\r
 ;------------------------------------------------------------------------------\r
 AsmReadMm7  PROC\r
+    ;\r
+    ; 64-bit MASM doesn't support MMX instructions, so use opcode here\r
+    ;\r
     DB      48h, 0fh, 7eh, 0f8h\r
     ret\r
 AsmReadMm7  ENDP\r