X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdePkg%2FLibrary%2FBaseLib%2FIa32%2FSwapBytes64.asm;h=7647880202c47691637ce59a6f6d83d529667ab0;hb=a9a812a0ed4ab3d83941fdc6da281aebdb9bb296;hp=186d094eee0fad84bc2d351ff4a2a2d5611acc7d;hpb=741fb364170375f89aa9c29488cc402db07a3776;p=mirror_edk2.git

diff --git a/MdePkg/Library/BaseLib/Ia32/SwapBytes64.asm b/MdePkg/Library/BaseLib/Ia32/SwapBytes64.asm
index 186d094eee..7647880202 100644
--- a/MdePkg/Library/BaseLib/Ia32/SwapBytes64.asm
+++ b/MdePkg/Library/BaseLib/Ia32/SwapBytes64.asm
@@ -33,8 +33,8 @@
 ;   );
 ;------------------------------------------------------------------------------
 InternalMathSwapBytes64 PROC
-    mov     eax, [esp + 8]
-    mov     edx, [esp + 4]
+    mov     eax, [esp + 8]              ; eax <- upper 32 bits
+    mov     edx, [esp + 4]              ; edx <- lower 32 bits
     bswap   eax
     bswap   edx
     ret