Moved the MdePkg to OldMdePkg so that new code in MdePkg does not break existing...

[mirror_edk2.git] / OldMdePkg / Library / BaseLib / Ia32 / LongJump.asm

diff --git a/OldMdePkg/Library/BaseLib/Ia32/LongJump.asm b/OldMdePkg/Library/BaseLib/Ia32/LongJump.asm
new file mode 100644 (file)
index 0000000..0309f6a
--- /dev/null
+++ b/OldMdePkg/Library/BaseLib/Ia32/LongJump.asm
@@ -0,0 +1,46 @@
+;------------------------------------------------------------------------------\r
+;\r
+; Copyright (c) 2006, 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
+;   LongJump.Asm\r
+;\r
+; Abstract:\r
+;\r
+;   Implementation of _LongJump() on IA-32.\r
+;\r
+;------------------------------------------------------------------------------\r
+\r
+    .386\r
+    .model  flat,C\r
+    .code\r
+\r
+;------------------------------------------------------------------------------\r
+; VOID\r
+; EFIAPI\r
+; InternalLongJump (\r
+;   IN      BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer,\r
+;   IN      UINTN                     Value\r
+;   );\r
+;------------------------------------------------------------------------------\r
+InternalLongJump    PROC\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]        ; restore "eip"\r
+InternalLongJump    ENDP\r
+\r
+    END\r