78 lines
1.6 KiB
NASM
78 lines
1.6 KiB
NASM
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title "Deferred Procedure Call Interrupt"
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;++
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;
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; Copyright (c) 2000 Microsoft Corporation
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;
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; Module Name:
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;
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; dpcint.asm
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;
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; Abstract:
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;
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; This module implements the code necessary to process the Deferred
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; Procedure Call interrupt.
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;
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; Author:
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;
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; David N. Cutler (davec) 10-Nov-2000
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;
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; Environment:
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;
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; Kernel mode only.
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;
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;--
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extern KiDispatchInterrupt:proc
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extern KiInitiateUserApc:proc
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extern __imp_HalEndSystemInterrupt:qword
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include ksamd64.inc
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subttl "Deferred Procedure Call Interrupt"
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;++
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;
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; VOID
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; KiDpcInterrupt (
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; VOID
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; )
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;
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; Routine Description:
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;
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; This routine is entered as the result of a software interrupt generated
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; at DISPATCH_LEVEL. Its function is to save the machine state and call
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; the dispatch interrupt routine.
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;
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; N.B. This is a directly connected interrupt that does not use an interrupt
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; object.
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;
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; Arguments:
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;
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; None.
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;
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; Return Value:
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;
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; None.
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;
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;--
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NESTED_ENTRY KiDpcInterrupt, _TEXT$00
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.pushframe ; mark machine frame
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push_reg rbp ; push dummy vector
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push_reg rbp ; save nonvolatile register
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GENERATE_INTERRUPT_FRAME ; generate interrupt frame
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mov ecx, DISPATCH_LEVEL ; set new IRQL level
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ENTER_INTERRUPT ; raise IRQL, do EOI, enable interrupts
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call KiDispatchInterrupt ; process the dispatch interrupt
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EXIT_INTERRUPT <NoEOI> ; lower IRQL and restore state
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NESTED_END KiDpcInterrupt, _TEXT$00
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end
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