Optimize the size of the Base Library for the MSFT 32-bit tool chains by taking advantage of inline assembly.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1567 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/BaseLib/Ia32/SetJump.c

@@ -0,0 +1,47 @@
+/** @file
+  Implementation of SetJump() on IA-32.
+
+  Copyright (c) 2006, Intel Corporation<BR>
+  All rights reserved. This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#if _MSC_EXTENSIONS
+
+VOID
+EFIAPI
+InternalAssertJumpBuffer (
+  IN      BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer
+  );
+
+_declspec (naked)
+UINTN
+EFIAPI
+SetJump (
+  OUT     BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer
+  )
+{ 
+  _asm {
+    push    [esp + 4]
+    call    InternalAssertJumpBuffer
+    pop     ecx
+    pop     ecx
+    mov     edx, [esp]
+    mov     [edx], ebx
+    mov     [edx + 4], esi
+    mov     [edx + 8], edi
+    mov     [edx + 12], ebp
+    mov     [edx + 16], esp
+    mov     [edx + 20], ecx
+    xor     eax, eax
+    jmp     ecx
+  }
+}
+
+#endif