1. Updated function headers for all assembly function

2. Optimized register usage in SetMemXX functions in all lib instances
3. Fixed a logical error in CopyMem for all lib instances


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1139 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 15 insertions, 6 deletions

diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem16.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem16.asm
index a95020876c..01b72c55d5 100644
--- a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem16.asm
+++ b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem16.asm
@@ -23,23 +23,32 @@
 

     .code

 

+;------------------------------------------------------------------------------

+; VOID *

+; EFIAPI

+; InternalMemSetMem16 (

+;   OUT     VOID                      *Buffer,

+;   IN      UINTN                     Length,

+;   IN      UINT16                    Value

+;   );

+;------------------------------------------------------------------------------

 InternalMemSetMem16 PROC    USES    rdi

     mov     rax, r8

-    DB      48h, 0fh, 6eh, 0c0h        ;  movq    mm0, rax

+    DB      48h, 0fh, 6eh, 0c0h         ; movd mm0, rax

     mov     r8, rcx

     mov     rdi, r8

     mov     rcx, rdx

-    and     rdx, 3

+    and     edx, 3

     shr     rcx, 2

     jz      @SetWords

-    DB      0fh, 70h, 0C0h, 00h        ;  pshufw  mm0, mm0, 0h

-@@: 

-    DB      48h, 0fh, 0e7h, 07h        ;  movntq  [rdi], mm0

+    DB      0fh, 70h, 0C0h, 00h         ; pshufw mm0, mm0, 0h

+@@:

+    DB      0fh, 0e7h, 07h              ; movntq [rdi], mm0

     add     rdi, 8

     loop    @B

     mfence

 @SetWords:

-    mov     rcx, rdx

+    mov     ecx, edx

     rep     stosw

     mov     rax, r8

     ret