Renamed remotely

[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / CompilerStub / X64 / memset.asm

diff --git a/EdkCompatibilityPkg/Foundation/Library/CompilerStub/X64/memset.asm b/EdkCompatibilityPkg/Foundation/Library/CompilerStub/X64/memset.asm
new file mode 100644 (file)
index 0000000..134700d
--- /dev/null
+++ b/EdkCompatibilityPkg/Foundation/Library/CompilerStub/X64/memset.asm
@@ -0,0 +1,62 @@
+;------------------------------------------------------------------------------\r
+;\r
+; Copyright (c) 2007, Intel Corporation\r
+; All rights reserved. This program and the accompanying materials\r
+; are licensed and made available under the terms and conditions of the BSD License\r
+; which accompanies this distribution.  The full text of the license may be found at\r
+; http://opensource.org/licenses/bsd-license.php\r
+;\r
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+;\r
+; Module Name:\r
+;\r
+;   SetMem.asm\r
+;\r
+; Abstract:\r
+;\r
+;   memset function\r
+;\r
+; Notes:\r
+;\r
+;------------------------------------------------------------------------------\r
+\r
+    .code\r
+\r
+;------------------------------------------------------------------------------\r
+; VOID *\r
+; memset (\r
+;   OUT     VOID                      *Buffer,    --> rcx\r
+;   IN      UINT8                     Value,      --> rdx\r
+;   IN      UINTN                     Length      --> r8\r
+;   );\r
+;------------------------------------------------------------------------------\r
+memset   PROC    USES    rdi\r
+    mov     rax, rcx    \r
+    cmp     r8, 0                      ; if Size == 0, do nothing\r
+    je      @SetDone\r
+    mov     rax, rdx                   ; rdx <-> r8\r
+    mov     rdx, r8                    ; rdx <- Length\r
+    mov     r8, rax                    ; r8  <- Value\r
+    mov     ah, al\r
+    DB      48h, 0fh, 6eh, 0c0h         ; movd mm0, rax\r
+    mov     r8, rcx\r
+    mov     rdi, r8                     ; rdi <- Buffer\r
+    mov     rcx, rdx\r
+    and     edx, 7\r
+    shr     rcx, 3\r
+    jz      @SetBytes\r
+    DB      0fh, 70h, 0C0h, 00h         ; pshufw mm0, mm0, 0h\r
+@@:\r
+    DB      48h, 0fh, 7eh, 07h          ; movd [rdi], mm0\r
+    add     rdi, 8\r
+    loop    @B\r
+@SetBytes:\r
+    mov     ecx, edx\r
+    rep     stosb\r
+    mov     rax, r8\r
+@SetDone:\r
+    ret\r
+memset   ENDP\r
+\r
+    END\r