Fix the issue that the high 16-bit of EAX may contain invalid data, which cause bad stack pointer, the change will ensure the high 16-bit of EAX is cleared.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11047 6f19259b-4bc3-4df7-8a09-765794883524
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@@ -1,6 +1,6 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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# Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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@@ -55,7 +55,7 @@ ASM_PFX(ThunkAttr): .space 4
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orb $2, %al
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outb %al, $0x92 # deactivate A20M#
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2:
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movl %ss, %eax
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movw %ss, %ax
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.byte 0x67, 0x66, 0x8d, 0x6c, 0x24, 0x34, 0x66
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mov %ebp, 0xffffffd8(%esi)
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mov 0xfffffff8(%esi), %ebx
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