80 lines
1.9 KiB
ArmAsm
80 lines
1.9 KiB
ArmAsm
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// TITLE("Interprocessor Interrupts")
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//++
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//
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// Copyright (c) 1993 Microsoft Corporation
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//
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// Module Name:
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//
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// rxipiint.s
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//
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// Abstract:
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//
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// This module implements the code necessary to field and process the
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// interprocessor interrupts on a MIPS R98 system.
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//
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// Author:
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//
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//
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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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// Revision History:
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//
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//--
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#include "halmips.h"
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SBTTL("Interprocessor Interrupt")
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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 an interprocessor interrupt.
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// Its function is to acknowledge the interrupt and transfer control to
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// the standard system routine to process interprocessor requrests.
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//
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// Arguments:
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//
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// s8 - Supplies a pointer to a trap frame at hal first dispatch
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// a0 - Supplies a pointer to a trap frame at kernel trap frame
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// a1 - intx
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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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// secondary
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.struct 0
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//
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liArgs: .space 4 * 4 // saved arguments
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IiS8: .space 4 //
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IiRa: .space 4 //
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IiFrameLength: //
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NESTED_ENTRY(HalpIpiInterrupt, IiFrameLength, zero)
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subu sp,sp,IiFrameLength // allocate stack frame
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sw s8,IiS8(sp) // save s8
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sw ra,IiRa(sp) // save Ra
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PROLOGUE_END
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or s8,a0,zero // set up trapframe to s8
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// KeIpiInterrupt require trapframe at s8
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lw t1,__imp_KeIpiInterrupt // process interprocessor requests
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jal t1 //
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lw ra,IiRa(sp) // restore ra
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lw s8,IiS8(sp) // restore s8
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addu sp,sp,IiFrameLength // deallocate stack frame
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j ra // return
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.end HalpIpIInterrupt
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