Import some basic libraries instances for Mde Packages.

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / LongJump.c

diff --git a/MdePkg/Library/BaseLib/Ia32/LongJump.c b/MdePkg/Library/BaseLib/Ia32/LongJump.c
new file mode 100644 (file)
index 0000000..3186da5
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/LongJump.c
@@ -0,0 +1,40 @@
+/** @file\r
+  Implementation of _LongJump() on IA-32.\r
+\r
+  Copyright (c) 2006 - 2007, Intel Corporation<BR>\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
+**/\r
+\r
+//\r
+// Include common header file for this module.\r
+//\r
+#include "CommonHeader.h"\r
+\r
+__declspec (naked)\r
+VOID\r
+EFIAPI\r
+InternalLongJump (\r
+  IN      BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer,\r
+  IN      UINTN                     Value\r
+  )\r
+{\r
+  _asm {\r
+    pop     eax                         ; skip return address\r
+    pop     edx                         ; edx <- JumpBuffer\r
+    pop     eax                         ; eax <- Value\r
+    mov     ebx, [edx]\r
+    mov     esi, [edx + 4]\r
+    mov     edi, [edx + 8]\r
+    mov     ebp, [edx + 12]\r
+    mov     esp, [edx + 16]\r
+    jmp     dword ptr [edx + 20]\r
+  }\r
+}\r
+\r