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https://github.com/CloverHackyColor/CloverBootloader.git
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72 lines
1.8 KiB
NASM
72 lines
1.8 KiB
NASM
;/** @file
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;
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; IDT vector entry.
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;
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; Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>
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; SPDX-License-Identifier: BSD-2-Clause-Patent
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;
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;**/
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SECTION .text
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;
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;------------------------------------------------------------------------------
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; Generic IDT Vector Handlers for the Host.
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;
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;------------------------------------------------------------------------------
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ALIGN 8
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global ASM_PFX(AsmGetVectorTemplatInfo)
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global ASM_PFX(AsmVectorFixup)
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@VectorTemplateBase:
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push eax
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db 0x6a ; push #VectorNumber
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@VectorNum:
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db 0
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mov eax, CommonInterruptEntry
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jmp eax
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@VectorTemplateEnd:
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global ASM_PFX(AsmGetVectorTemplatInfo)
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ASM_PFX(AsmGetVectorTemplatInfo):
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mov ecx, [esp + 4]
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mov dword [ecx], @VectorTemplateBase
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mov eax, (@VectorTemplateEnd - @VectorTemplateBase)
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ret
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global ASM_PFX(AsmVectorFixup)
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ASM_PFX(AsmVectorFixup):
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mov eax, dword [esp + 8]
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mov ecx, [esp + 4]
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mov [ecx + (@VectorNum - @VectorTemplateBase)], al
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ret
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;---------------------------------------;
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; CommonInterruptEntry ;
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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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CommonInterruptEntry:
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cli
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jmp $
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