summaryrefslogtreecommitdiffstats
path: root/OldMdePkg/Library/BaseLib/Ia32/SetJump.asm
diff options
context:
space:
mode:
Diffstat (limited to 'OldMdePkg/Library/BaseLib/Ia32/SetJump.asm')
-rw-r--r--OldMdePkg/Library/BaseLib/Ia32/SetJump.asm51
1 files changed, 51 insertions, 0 deletions
diff --git a/OldMdePkg/Library/BaseLib/Ia32/SetJump.asm b/OldMdePkg/Library/BaseLib/Ia32/SetJump.asm
new file mode 100644
index 0000000000..4b7b40c47a
--- /dev/null
+++ b/OldMdePkg/Library/BaseLib/Ia32/SetJump.asm
@@ -0,0 +1,51 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation
+; 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.
+;
+; Module Name:
+;
+; SetJump.Asm
+;
+; Abstract:
+;
+; Implementation of SetJump() on IA-32.
+;
+;------------------------------------------------------------------------------
+
+ .386
+ .model flat,C
+ .code
+
+InternalAssertJumpBuffer PROTO C
+
+;------------------------------------------------------------------------------
+; UINTN
+; EFIAPI
+; SetJump (
+; OUT BASE_LIBRARY_JUMP_BUFFER *JumpBuffer
+; );
+;------------------------------------------------------------------------------
+SetJump PROC
+ push [esp + 4]
+ call InternalAssertJumpBuffer ; To validate JumpBuffer
+ pop ecx
+ pop ecx ; ecx <- return address
+ 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 ; eip value to restore in LongJump
+ xor eax, eax
+ jmp ecx
+SetJump ENDP
+
+ END