cd5ebaa06d
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10420 6f19259b-4bc3-4df7-8a09-765794883524
81 lines
2.0 KiB
ArmAsm
81 lines
2.0 KiB
ArmAsm
#/** @file
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#
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# IDT vector entry.
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#
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# Copyright (c) 2007 - 2009, 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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#**/
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.text
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.code32
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.p2align 3
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ASM_GLOBAL ASM_PFX(AsmGetVectorTemplatInfo)
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ASM_GLOBAL ASM_PFX(AsmVectorFixup)
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/*
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;
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;-----------------------------------------------------------------------
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; Template of IDT Vector Handlers.
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;
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;-----------------------------------------------------------------------
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*/
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VectorTemplateBase:
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pushl %eax
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.byte 0x6a # push #VectorNum
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VectorNum:
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.byte 0
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movl CommonInterruptEntry, %eax
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jmp *%eax
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VectorTemplateEnd:
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ASM_PFX(AsmGetVectorTemplatInfo):
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movl 4(%esp), %ecx
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movl $VectorTemplateBase, (%ecx)
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movl $(VectorTemplateEnd - VectorTemplateBase), %eax
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ret
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ASM_PFX(AsmVectorFixup):
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movl 8(%esp), %eax
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movl 4(%esp), %ecx
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movb %al, (VectorNum - VectorTemplateBase)(%ecx)
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ret
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/*
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; The follow algorithm is used for the common interrupt routine.
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;
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; +---------------------+ <-- 16-byte aligned ensured by processor
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; + Old SS +
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; +---------------------+
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; + Old RSP +
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; +---------------------+
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; + RFlags +
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; +---------------------+
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; + CS +
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; +---------------------+
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; + RIP +
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; +---------------------+
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; + Error Code +
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; +---------------------+
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; + Vector Number +
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; +---------------------+
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*/
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CommonInterruptEntry:
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cli
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1:
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jmp 1b
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