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45 lines
1.5 KiB
45 lines
1.5 KiB
4 years ago
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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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# 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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# http://opensource.org/licenses/bsd-license.php.
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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# Module Name:
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#
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# SetJump.S
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#
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# Abstract:
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#
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# Implementation of SetJump() on IA-32.
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#
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#------------------------------------------------------------------------------
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ASM_GLOBAL ASM_PFX(SetJump), ASM_PFX(InternalAssertJumpBuffer)
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#------------------------------------------------------------------------------
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# UINTN
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# EFIAPI
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# SetJump (
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# OUT BASE_LIBRARY_JUMP_BUFFER *JumpBuffer
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# );
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#------------------------------------------------------------------------------
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ASM_PFX(SetJump):
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pushl 0x4(%esp)
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call ASM_PFX(InternalAssertJumpBuffer) # To validate JumpBuffer
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pop %ecx
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pop %ecx # ecx <- return address
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movl (%esp), %edx
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movl %ebx, (%edx)
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movl %esi, 4(%edx)
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movl %edi, 8(%edx)
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movl %ebp, 12(%edx)
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movl %esp, 16(%edx)
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movl %ecx, 20(%edx) # eip value to restore in LongJump
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xorl %eax, %eax
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jmp *%ecx
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