4c8f6044a2
Signed-off-by: Tian, Hot <hot.tian@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15154 6f19259b-4bc3-4df7-8a09-765794883524
73 lines
2.0 KiB
ArmAsm
73 lines
2.0 KiB
ArmAsm
## @file
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# Interrupt Redirection Template
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#
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# Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions
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# of the BSD License which accompanies this distribution. The
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# 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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##
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#text SEGMENT
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#----------------------------------------------------------------------------
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# Procedure: InterruptRedirectionTemplate: Redirects interrupts 0x68-0x6F
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#
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# Input: None
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#
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# Output: None
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#
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# Prototype: VOID
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# InterruptRedirectionTemplate (
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# VOID
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# );
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#
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# Saves: None
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#
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# Modified: None
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#
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# Description: Contains the code that is copied into low memory (below 640K).
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# This code reflects interrupts 0x68-0x6f to interrupts 0x08-0x0f.
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# This template must be copied into low memory, and the IDT entries
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# 0x68-0x6F must be point to the low memory copy of this code. Each
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# entry is 4 bytes long, so IDT entries 0x68-0x6F can be easily
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# computed.
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#
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#----------------------------------------------------------------------------
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ASM_GLOBAL ASM_PFX(InterruptRedirectionTemplate)
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ASM_PFX(InterruptRedirectionTemplate):
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int $0x08
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.byte 0x0cf # IRET
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nop
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int $0x09
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.byte 0x0cf # IRET
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nop
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int $0x0a
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.byte 0x0cf # IRET
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nop
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int $0x0b
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.byte 0x0cf # IRET
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nop
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int $0x0c
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.byte 0x0cf # IRET
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nop
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int $0x0d
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.byte 0x0cf # IRET
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nop
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int $0x0e
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.byte 0x0cf # IRET
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nop
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int $0x0f
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.byte 0x0cf # IRET
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nop
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#END
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