1 files changed, 44 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/Ia32/SetJump.S b/Core/MdePkg/Library/BaseLib/Ia32/SetJump.S
new file mode 100644
index 0000000000..459224e6c8
--- /dev/null
+++ b/Core/MdePkg/Library/BaseLib/Ia32/SetJump.S
@@ -0,0 +1,44 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+# 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.S
+#
+# Abstract:
+#
+#   Implementation of SetJump() on IA-32.
+#
+#------------------------------------------------------------------------------
+
+ASM_GLOBAL ASM_PFX(SetJump), ASM_PFX(InternalAssertJumpBuffer)
+
+#------------------------------------------------------------------------------
+# UINTN
+# EFIAPI
+# SetJump (
+#   OUT     BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer
+#   );
+#------------------------------------------------------------------------------
+ASM_PFX(SetJump):
+    pushl   0x4(%esp)
+    call    ASM_PFX(InternalAssertJumpBuffer)               # To validate JumpBuffer
+    pop     %ecx
+    pop     %ecx                                            # ecx <- return address
+    movl    (%esp), %edx
+    movl    %ebx, (%edx)
+    movl    %esi, 4(%edx)
+    movl    %edi, 8(%edx)
+    movl    %ebp, 12(%edx)
+    movl    %esp, 16(%edx)
+    movl    %ecx, 20(%edx)                                  # eip value to restore in LongJump
+    xorl    %eax, %eax
+    jmp     *%ecx