diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/Ia32/LongJump.c')
-rw-r--r-- | MdePkg/Library/BaseLib/Ia32/LongJump.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/Ia32/LongJump.c b/MdePkg/Library/BaseLib/Ia32/LongJump.c new file mode 100644 index 0000000..3444773 --- /dev/null +++ b/MdePkg/Library/BaseLib/Ia32/LongJump.c @@ -0,0 +1,38 @@ +/** @file
+ Implementation of _LongJump() 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
+
+__declspec (naked)
+VOID
+EFIAPI
+InternalLongJump (
+ IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer,
+ IN UINTN Value
+ )
+{
+ _asm {
+ pop eax ; skip return address
+ pop edx ; edx <- JumpBuffer
+ pop eax ; eax <- Value
+ mov ebx, [edx]
+ mov esi, [edx + 4]
+ mov edi, [edx + 8]
+ mov ebp, [edx + 12]
+ mov esp, [edx + 16]
+ jmp dword ptr [edx + 20]
+ }
+}
+
+#endif
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