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/*[
*
* Name: nt_inthk.c
*
* Derived From: (original)
*
* Author: Dave Bartlett
*
* Created On: 11 Jan 1995
*
* Coding Stds: 2.4
*
* Purpose: This module implements the memory management functions
* required for 486 NT.
*
* Include File: nt_inthk.h
*
* Copyright Insignia Solutions Ltd., 1994. All rights reserved.
*
]*/
#ifdef CPU_40_STYLE
/* Need all of the following to include nt.h and windows.h in the same file. */
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <windows.h>
#include "insignia.h"
#include "host_def.h"
#include "gdpvar.h"
#include "nt_inthk.h"
#include "debug.h"
/* Make local symbols visible if debugging. */
#ifndef PROD
#define LOCAL
#endif /* not PROD */
/* Macros and typedefs. */
/* Hardware interrupt handler */
LOCAL BOOL (*HWIntHandler)(ULONG) = NULL;
#if defined(CCPU) || !defined(PROD)
/* Software interrupt handler */
LOCAL BOOL (*SWIntHandler)(ULONG) = NULL;
/* Exception interrupt handler */
LOCAL BOOL (*EXIntHandler)(ULONG,ULONG) = NULL;
#endif /* CCPU */
/* Global Functions. */
/*(
============================= host_hwint_hook =================================
PURPOSE:
This function is called from the ICA during the process of ACKing an
hardware interrupt. This function will call a hardware interrupt handler
if one is defined.
INPUT:
Interrupt vector number generated from hardware interrupt
OUTPUT:
Return value - TRUE hardware interrupt processed
FALSE process hardware interrupt in normal way
================================================================================
)*/
#if defined(CCPU) || !defined(PROD)
GLOBAL BOOL host_hwint_hook IFN1(IS32, int_no)
{
BOOL returnStatus = FALSE;
/* hardware interrupt handler defined ? */
if(HWIntHandler)
{
returnStatus = (HWIntHandler)((ULONG) int_no);
#ifndef PROD
if(!returnStatus)
always_trace0("Hardware interrupt handler failed");
#endif /* PROD */
}
return( returnStatus );
}
#endif
/*(
======================= VdmInstallHardwareIntHandler ===========================
PURPOSE:
Register a hardware interrupt handler called before the CPU dispatches
the interrupt.
INPUT:
Hardware interrupt handler function
OUTPUT:
Return value - NTSTATUS
================================================================================
)*/
GLOBAL NTSTATUS VdmInstallHardwareIntHandler IFN1(PVOID, HardwareIntHandler)
{
#ifdef CCPU
HWIntHandler = HardwareIntHandler;
#else
GLOBAL_VDM_HwIntHandler = HardwareIntHandler;
#endif
return(STATUS_SUCCESS);
}
/*(
============================= host_swint_hook =================================
PURPOSE:
This function is called from the CCPU prior to provessing a software
interrupt. This function will call a software interrupt handler
if one is defined.
INPUT:
Interrupt number
OUTPUT:
Return value - TRUE software interrupt processed
FALSE process software interrupt in normal way
================================================================================
)*/
#if defined(CCPU) || !defined(PROD)
GLOBAL BOOL host_swint_hook IFN1(IS32, int_no)
{
BOOL returnStatus = FALSE;
/* software interrupt handler defined ? */
if(SWIntHandler)
{
returnStatus = (SWIntHandler)((ULONG) int_no);
#ifndef PROD
if(!returnStatus)
always_trace0("Software interrupt handler failed");
#endif /* PROD */
}
return( returnStatus );
}
#endif /* CCPU */
/*(
======================= VdmInstallSoftwareIntHandler ===========================
PURPOSE:
Register a software interrupt handler called before the CPU dispatches
the software interrupt.
INPUT:
Software interrupt handler function
OUTPUT:
Return value - NTSTATUS
================================================================================
)*/
GLOBAL NTSTATUS VdmInstallSoftwareIntHandler IFN1(PVOID, SoftwareIntHandler)
{
#ifdef CCPU
SWIntHandler = SoftwareIntHandler;
#else
GLOBAL_VDM_SoftIntHandler = SoftwareIntHandler;
#endif
return(STATUS_SUCCESS);
}
/*(
============================= host_exint_hook =================================
PURPOSE:
This function is called from the CPU prior to processing a CPU
exception interrupt. This function will call a exception interrupt
handler if one is defined.
INPUT:
Exception number
Exception error code
OUTPUT:
Return value - TRUE hardware interrupt processed
FALSE process hardware interrupt in normal way
================================================================================
)*/
#if defined(CCPU) || !defined(PROD)
GLOBAL BOOL host_exint_hook IFN2(IS32, exp_no, IS32, error_code)
{
BOOL returnStatus = FALSE;
/* exception interrupt handler defined ? */
if(EXIntHandler)
{
returnStatus = (EXIntHandler)((ULONG) exp_no, (ULONG) error_code);
#ifndef PROD
if(!returnStatus)
always_trace0("Exception interrupt handler failed (%x)");
#endif /* PROD */
}
return( returnStatus );
}
#endif /* CCPU */
/*(
======================= VdmInstallFaultHandler ===========================
PURPOSE:
Register a CPU exception interrupt handler called before the CPU
dispatches the exceptioninterrupt.
INPUT:
Exception interrupt handler function
OUTPUT:
Return value - NTSTATUS
================================================================================
)*/
GLOBAL NTSTATUS VdmInstallFaultHandler IFN1(PVOID, FaultHandler)
{
#ifdef CCPU
EXIntHandler = FaultHandler;
#else
GLOBAL_VDM_FaultHandler = FaultHandler;
#endif
return(STATUS_SUCCESS);
}
#endif /* CPU_40_STYLE */
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