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245 lines
6.9 KiB
245 lines
6.9 KiB
/*
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* demdisp.c - SVC dispatch module
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*
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* Modification History:
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*
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* Sudeepb 31-Mar-1991 Created
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*/
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#include "dem.h"
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#include <stdio.h>
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#include <softpc.h>
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#if DBG
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PCHAR aSVCNames[] = {
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"demChgFilePtr",
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"demChMod",
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"demClose",
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"demCreate",
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"demCreateDir",
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"demDelete",
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"demDeleteDir",
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"demDeleteFCB",
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"demFileTimes",
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"demFindFirst",
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"demFindFirstFCB",
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"demFindNext",
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"demFindNextFCB",
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"demGetBootDrive",
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"demGetDriveFreeSpace",
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"demGetDrives",
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"demGSetMediaID",
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"demLoadDos",
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"demOpen",
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"demQueryCurrentDir",
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"demQueryDate",
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"demQueryTime",
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"demRead",
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"demRename",
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"demSetCurrentDir",
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"demSetDate",
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"demSetDefaultDrive",
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"demSetDTALocation",
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"demSetTime",
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"demSetV86KernelAddr",
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"demWrite",
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"demGetDriveInfo",
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"demRenameFCB",
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"demIOCTL",
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"demCreateNew",
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"DemDiskReset",
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"DemSetDPB",
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"DemGetDPB",
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"DemSleazeFunc",
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"demCommit",
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"DemExtHandle",
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"DemAbsDRD",
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"DemAbsDWRT",
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"DemGsetCDPG",
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"DemCreateFCB",
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"DemOpenFCB",
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"DemCloseFCB",
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"DemFCBIO",
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"DemDate16",
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"DemGetFileInfo",
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"DemSetHardErrorInfo",
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"DemRetry",
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"DemLoadDosAppSym",
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"DemFreeDosAppSym",
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"DemEntryDosApp",
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"DemDOSDispCall",
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"DemDOSDispRet",
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"DemOutputString",
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"DemInputString",
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"DemIsDebug",
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"DemTerminatePDB",
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"DemExitVDM",
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"DemWOWFiles",
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"DemLockOper",
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"demNotYetImplemented",
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"DemGetComputerName",
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"DemFastRead",
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"DemFastWrite",
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"DemCheckPath",
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"DemSystemSymbolOp",
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"DemGetDpbList",
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"DemPipeFileDataEOF",
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"DemPipeFileEOF"
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};
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#endif // DBG
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DWORD fShowSVCMsg = 0;
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ULONG CurrentISVC;
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PFNSVC apfnSVC [] = {
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demChgFilePtr, //SVC_DEMCHGFILEPTR
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demChMod, //SVC_DEMCHMOD
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demClose, //SVC_DEMCLOSE
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demCreate, //SVC_DEMCREATE
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demCreateDir, //SVC_DEMCREATEDIR
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demDelete, //SVC_DEMDELETE
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demDeleteDir, //SVC_DEMDELETEDIR
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demDeleteFCB, //SVC_DEMDELETEFCB
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demFileTimes, //SVC_DEMFILETIMES
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demFindFirst, //SVC_DEMFINDFIRST
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demFindFirstFCB, //SVC_DEMFINDFIRSTFCB
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demFindNext, //SVC_DEMFINDNEXT
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demFindNextFCB, //SVC_DEMFINDNEXTFCB
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demGetBootDrive, //SVC_DEMGETBOOTDRIVE
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demGetDriveFreeSpace, //SVC_DEMGETDRIVEFREESPACE
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demGetDrives, //SVC_DEMGETDRIVES
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demGSetMediaID, //SVC_DEMGSETMEDIAID
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demLoadDos, //SVC_DEMLOADDOS
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demOpen, //SVC_DEMOPEN
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demQueryCurrentDir, //SVC_DEMQUERYCURRENTDIR
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demQueryDate, //SVC_DEMQUERYDATE
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demQueryTime, //SVC_DEMQUERYTIME
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demRead, //SVC_DEMREAD
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demRename, //SVC_DEMRENAME
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demSetCurrentDir, //SVC_DEMSETCURRENTDIR
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demSetDate, //SVC_DEMSETDATE
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demSetDefaultDrive, //SVC_DEMSETDEFAULTDRIVE
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demSetDTALocation, //SVC_DEMSETDTALOCATION
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demSetTime, //SVC_DEMSETTIME
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demSetV86KernelAddr, //SVC_DEMSETV86KERNELADDR
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demWrite, //SVC_DEMWRITE
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demNotYetImplemented, //SVC_GETDRIVEINFO
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demRenameFCB, //SVC_DEMRENAMEFCB
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demIOCTL, //SVC_DEMIOCTL
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demCreateNew, //SVC_DEMCREATENEW
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demDiskReset, //SVC_DEMDISKRESET
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demNotYetImplemented, //SVC_DEMSETDPB
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demGetDPB, //SVC_DEMGETDPB
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demNotYetImplemented, //SVC_DEMSLEAZEFUNC
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demCommit, //SVC_DEMCOMMIT
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demNotYetImplemented, //SVC_DEMEXTHANDLE
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demAbsRead, //SVC_DEMABSDRD
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demAbsWrite, //SVC_DEMABSDWRT
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demNotYetImplemented, //SVC_DEMGSETCDPG
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demCreateFCB, //SVC_DEMCREATEFCB
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demOpenFCB, //SVC_DEMOPENFCB
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demCloseFCB, //SVC_DEMCLOSEFCB
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demFCBIO, //SVC_FCBIO
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demDate16, //SVC_DEMDATE16
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demGetFileInfo, //SVC_DEMGETFILEINFO
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demSetHardErrorInfo, //SVC_DEMSETHARDERRORINFO
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demRetry, //SVC_DEMRETRY
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demLoadDosAppSym, //SVC_DEMLOADDOSAPPSYM
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demFreeDosAppSym, //SVC_DEMFREEDOSAPPSYM
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demEntryDosApp, //SVC_DEMENTRYDOSAPP
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demDOSDispCall, //SVC_DEMDOSDISPCALL
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demDOSDispRet, //SVC_DEMDOSDISPRET
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demOutputString, //SVC_OUTPUT_STRING
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demInputString, //SVC_INPUT_STRING
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demIsDebug, //SVC_ISDEBUG
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demTerminatePDB, //SVC_PDBTERMINATE
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demExitVDM, //SVC_DEMEXITVDM
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demWOWFiles, //SVC_DEMWOWFILES
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demLockOper, //SVC_DEMLOCKOPER
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demNotYetImplemented, //SVC_DEMNOTYETIMPLEMENTED
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demGetComputerName, //SVC_DEMGETCOMPUTERNAME
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demNotYetImplemented, //SVC_DEMFASTREAD
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demNotYetImplemented, //SVC_DEMFASTWRITE
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demCheckPath, //SVC_DEMCHECKPATH
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demSystemSymbolOp, //SVC_DEMSYSTEMSYMBOLOP
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demGetDPBList, //SVC_DEMBUILDDPBLIST
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demPipeFileDataEOF, //SVC_DEMPIPEFILEDATAEOF
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demPipeFileEOF //SVC_DEMPIPEFILEEOF
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};
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/* DemDispatch - Dispatch SVC call to right handler.
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*
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* Entry - iSvc (SVC byte following SVCop)
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*
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* Exit - None
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*
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* Note - Some mechanism has to be worked out to let the emulator know
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* about DOSKRNL code segment and size. Using these it will figure
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* out whether SVCop (hlt for the moment) has to be passed to
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* DEM or to be handled as normal invalid opcode.
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*/
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BOOL DemDispatch (ULONG iSvc)
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{
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#if DBG
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if(iSvc < SVC_DEMLASTSVC && (fShowSVCMsg & DEMSVCTRACE) &&
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apfnSVC[iSvc] != demNotYetImplemented){
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sprintf(demDebugBuffer,"DemDispatch: Entering %s\n\tAX=%.4x BX=%.4x CX=%.4x DX=%.4x DI=%.4x SI=%.4x\n",
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aSVCNames[iSvc],getAX(),getBX(),getCX(),getDX(),getDI(),getSI());
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OutputDebugStringOem(demDebugBuffer);
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sprintf(demDebugBuffer,"\tCS=%.4x IP=%.4x DS=%.4x ES=%.4x SS=%.4x SP=%.4x BP=%.4x\n",
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getCS(),getIP(), getDS(),getES(),getSS(),getSP(),getBP());
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OutputDebugStringOem(demDebugBuffer);
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}
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#endif
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if (iSvc >= SVC_DEMLASTSVC){
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#if DBG
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sprintf(demDebugBuffer,"Unimplemented SVC index %x\n",iSvc);
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OutputDebugStringOem(demDebugBuffer);
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#endif
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setCF(1);
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return FALSE;
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}
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if (pHardErrPacket) {
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pHardErrPacket->vhe_fbInt24 = 0;
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}
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CurrentISVC = iSvc;
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(apfnSVC [iSvc])();
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#if DBG
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if((fShowSVCMsg & DEMSVCTRACE)){
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sprintf(demDebugBuffer,"DemDispatch:On Leaving %s\n\tAX=%.4x BX=%.4x CX=%.4x DX=%.4x DI=%.4x SI=%.4x\n",
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aSVCNames[iSvc],getAX(),getBX(),getCX(),getDX(),getDI(),getSI());
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OutputDebugStringOem(demDebugBuffer);
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sprintf(demDebugBuffer,"\tCS=%.4x IP=%.4x DS=%.4x ES=%.4x SS=%.4x SP=%.4x BP=%.4x CF=%x\n",
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getCS(),getIP(), getDS(),getES(),getSS(),getSP(),getBP(),getCF());
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OutputDebugStringOem(demDebugBuffer);
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}
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#endif
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return TRUE;
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}
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VOID demNotYetImplemented (VOID)
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{
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if (fShowSVCMsg) {
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sprintf(demDebugBuffer,"Unimplemented SVC %d\n",CurrentISVC);
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OutputDebugStringOem(demDebugBuffer);
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}
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setCF(0);
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return;
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}
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VOID demSetV86KernelAddr (VOID)
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{
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// Here debugger callout has to be made for DOSKRNL symbols
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return;
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}
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