40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
/**
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* PROJECT: ExectOS
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* COPYRIGHT: See COPYING.md in the top level directory
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* FILE: xtoskrnl/ke/amd64/irq.cc
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* DESCRIPTION: Kernel interrupts support for amd64 architecture
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* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
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*/
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#include <xtos.hh>
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/**
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* Sets new interrupt handler for the existing IDT entry.
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*
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* @param HalVector
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* Supplies the HAL vector number.
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*
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* @param Handler
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* Supplies the new interrupt handler.
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*
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* @return This routine does not return any value.
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*
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* @since XT 1.0
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*/
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XTAPI
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VOID
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KE::Irq::SetInterruptHandler(IN ULONG Vector,
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IN PVOID Handler)
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{
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PKPROCESSOR_BLOCK ProcessorBlock;
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/* Get current processor block */
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ProcessorBlock = KE::Processor::GetCurrentProcessorBlock();
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/* Update interrupt handler */
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ProcessorBlock->IdtBase[(UCHAR) Vector].OffsetLow = ((ULONG_PTR)Handler & 0xFFFF);
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ProcessorBlock->IdtBase[(UCHAR) Vector].OffsetMiddle = (((ULONG_PTR)Handler >> 16) & 0xFFFF);
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ProcessorBlock->IdtBase[(UCHAR) Vector].OffsetHigh = (ULONG_PTR)Handler >> 32;
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}
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