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; SCCSID = @(#)dispatch.asm 1.1 85/04/10
; SCCSID = @(#)dispatch.asm 1.1 85/04/10
;
; Major dispatch code and table for MSDOS 2.X and above.
;
; Modification history:
;
; Created: MZ 30 March 1983
;
; The system calls are dispatched to in such a fashion as to have their entire
; register set passed to them except for CS:IP and SS:SP. This reduces the
; need for retreiving information from the user's stack.
;
; There are also critical sections that need to be observed when running in a
; multitasking environment. These sections are:
;
; 1 critDisk any of the disk code that will twiddle the buffer cache
; 2 critDevice all device drivers
;
; 4 critMem memory allocation stuff
; 5 critNet network critical section
;
; The system calls below are noted as to which of these critical sections they
; belong. The critical sections are noted in the source files by the macros
; EnterCrit and LeaveCrit.
;
; The break-down of the individual system calls into source files is as
; follows (* means done):
;
; * handle.asm: Close, Read, Write, LSeek, XDup, XDup2, FileTimes
; IOCTL.INC: IOCTL
; * file.asm: Open, Creat, ChMod, Unlink, Rename, CreateTemp,
; CreateNew
; * srvcall.asm: $ServerCall
; * path.asm: MkDir, RmDir, ChDir, CurrentDir
; * alloc.asm: $Alloc, $Dealloc, $SetBlock, $AllocOper
; arena_free_process, arena_next -> LOW LEVEL <-
; check_signature, Coalesce
; * search.asm: DirSearchFirst, DirSearchNext, FindFirst, FindNext,
; PackName -> LOW LEVEL <-
; * proc.asm: Exec, Exit, Abort, Wait, KeepProcess
; * cpmio.asm: StdConInput, StdConOutput, StdAuxInput, StdAuxOutput,
; StdPrinterOutput, RawConIO, RawConInput,
; StdConInputNoEcho, StdConStringInput,
; StdConStringOutput, StdConInputStatus,
; StdConInputFlush
; OUT, BUFOUT, RAWOUT, RAWOUT2 -> LOW LEVEL <-
; * fcbio.asm: FCBOpen, FCBClose, FCBDelete, FCBSeqRead, FCBSeqWrite,
; FCBCreate, FCBRename, FCBRandomRead, FCBRandomWrite,
; GetFCBFileLength, GetFCBPosition, FCBRandomReadBlock,
; FCBRandomWriteBlock
; * Time.asm: GetDate, SetDate, GetTime, SetTime
; * Parse.asm: Parse_file_descriptor, PathParse
; * GetSet.asm: GetInterruptVector, SetInterruptVector,
; GetVerifyOnWrite, SetVerifyOnWrite, GetDMA, SetDMA,
; GetVersion, SetCTRLCTrapping, GetDriveFreespace,
; CharOper, International, SetDefaultDrive,
; GetDefaultDrive
; * Misc.asm: Sleazefunc, SleazefuncDL, GetDefaultDPB, GetDPB,
; CreateProcessDataBlock, GetINDOSFlag, GetInVars,
; SetDPB, DupPDB, DiskReset
; StrCmp, StrCpy, Ucase -> LOW LEVEL <-
;
; STUB MODULES
; Net.asm **** This will get broken down more???
; * Share.asm Share_Check, Share_Violation
; * Lock.asm $LockOper
; DOS_LOCK,DOS_UNLOCK,Lock_Check, Lock_Violation
; INTERNAL INTERFACE MODULES
; * Lock.asm DOS_LOCK, DOS_UNLOCK -->> STUBS <<--
; * Dinfo.asm DISK_INFO
; * Finfo.asm GET_FILE_INFO, SET_FILE_ATTRIBUTE
; * Create.asm DOS_CREATE, DOS_CREATE_NEW,
; Set_Mknd_Err --> Low level routine <--
; * Dup.asm DOS_DUP
; * Open.asm DOS_OPEN,
; SetBadPathError, --> Low level routines <--
; Check_Access_AX, Share_Error, Set_SFT_Mode
; * Close.asm DOS_CLOSE, DOS_COMMIT, DOS_CLOSE_GOT_SFT,
; Free_SFT --> Low level routine <--
; * Abort.asm DOS_ABORT
; * ISearch.asm DOS_SEARCH_FIRST, DOS_SEARCH_NEXT,
; RENAME_NEXT --> Low level routine <--
; * Dircall.asm DOS_MKDIR, DOS_CHDIR, DOS_RMDIR
; * Rename.asm DOS_RENAME
; * Delete.asm DOS_DELETE,
; REN_DEL_Check --> Low level routine <--
; * Disk.asm DOS_READ, DOS_WRITE
; LOW LEVEL MODULES
; * Fat.asm UNPACK, PACK, MAPCLUSTER, FATREAD_SFT,
; FATREAD_CDS, FAT_operation
; * Ctrlc.asm --> STD/IBM versions <--
; FATAL, FATAL1, reset_environment, DSKSTATCHK,
; SPOOLINT, STATCHK, CNTCHAND, DIVOV, RealDivOv,
; CHARHARD, HardErr
; * Buf.asm SETVISIT, ScanPlace, PLACEBUF, PLACEHEAD, PointComp,
; GETBUFFR, GETBUFFRB, FlushBuf, BufWrite,
; SKIPVISIT
; * Disk.asm SWAPBACK, SWAPCON, get_io_sft, DirRead, FATSecRd,
; DskRead, SETUP, BREAKDOWN, DISKREAD, DISKWRITE,
; FIRSTCLUSTER, DREAD, DWRITE, DSKWRITE,
; READ_LOCK_VIOLATION, WRITE_LOCK_VIOLATION,
; SETSFT, SETCLUS, AddRec
; * Mknode.asm BUILDDIR, SETDOTENT, MakeNode, NEWENTRY, FREEENT,
; NEWDIR, DOOPEN,RENAME_MAKE
; * FCB.asm MakeFcb, NameTrans, PATHCHRCMP, GetLet, TESTKANJ,
; NORMSCAN, CHK, DELIM
; * Rom.asm GET_random_record, GETRRPOS1, GetRRPos, SKPCLP,
; FNDCLUS, BUFSEC, BUFRD, BUFWRT, NEXTSEC,
; OPTIMIZE, FIGREC, GETREC, ALLOCATE, RESTFATBYT,
; RELEASE, RELBLKS, GETEOF
; * Dev.asm IOFUNC, DEVIOCALL, SETREAD, SETWRITE, GOTDPB,
; DEVIOCALL2, DEV_CLOSE_SFT, DEV_OPEN_SFT
; * Dir.asm SEARCH, SETDIRSRCH, GETPATH, ROOTPATH, StartSrch,
; MatchAttributes, DEVNAME, Build_device_ent,
; FindEntry, Srch, NEXTENT, GETENTRY, GETENT,
; NEXTENTRY, GetPathNoSet, FINDPATH
;
; critical section information for the system calls
; System Call Who takes care of the reentrancy
; Abort 0 (flushbuf) DOS_Close
; Std_Con_Input 1 DOS_Read
; Std_Con_Output 2 DOS_Write
; Std_Aux_Input 3 DOS_Read
; Std_Aux_Output 4 DOS_Write
; Std_Printer_Output 5 DOS_Write
; Raw_Con_IO 6 DOS_Read/DOS_Write
; Raw_Con_Input 7 DOS_Read
; Std_Con_Input_No_Echo 8 DOS_Read
; Std_Con_String_Output 9 DOS_Write
; Std_Con_String_Input A DOS_Read
; Std_Con_Input_Status B DOS_Read
; Std_Con_Input_Flush C DOS_Read
; Disk_Reset D (FlushBuf, ScanPlace, SkipVisit)
; Set_Default_Drive E *none*
; FCB_Open F DOS_Open
; FCB_Close 10 DOS_Close
; Dir_Search_First 11 DOS_Search_First
; Dir_Search_Next 12 DOS_Search_Next
; FCB_Delete 13 DOS_Delete
; FCB_Seq_Read 14 DOS_Read/DOS_Write
; FCB_Seq_Write 15 DOS_Read/DOS_Write
; FCB_Create 16 DOS_Create
; FCB_Rename 17 DOS_rename
; Get_Default_Drive 19 *none*
; Set_DMA 1A *none*
; Get_Default_DPB 1F *none*
; FCB_Random_Read 21 DOS_Read/DOS_Write
; FCB_Random_Write 22 DOS_Read/DOS_Write
; Get_FCB_File_Length 23 Get_file_info
; Get_FCB_Position 24 *none*
; Set_Interrupt_Vector 25 *none*
; Create_Process_Data_Block 26 *none*
; FCB_Random_Read_Block 27 DOS_Read/DOS_Write
; FCB_Random_Write_Block 28 DOS_Read/DOS_Write
; Parse_File_Descriptor 29 *none*
; Get_Date 2A DEVIOCALL
; Set_Date 2B DEVIOCALL
; Get_Time 2C DEVIOCALL
; Set_Time 2D DEVIOCALL
; Set_Verify_On_Write 2E *none*
; Get_DMA 2F *none*
; Get_Version 30 *none*
; Keep_Process 31 $abort...
; Get_DPB 32 *none*
; Set_CTRL_C_Trapping 33 *none*
; Get_InDOS_Flag 34 *none*
; Get_Interrupt_Vector 35 *none*
; Get_Drive_Freespace 36 Disk_Info
; Char_Oper 37 *none*
; International 38 *none*
; MKDir 39 DOS_MkDir
; RMDir 3A DOS_RmDir
; CHDir 3B DOS_ChDir
; Creat 3C DOS_Create
; Open 3D DOS_Open
; Close 3E DOS_Close
; Read 3F DOS_Read
; Write 40 DOS_Write
; Unlink 41 DOS_Delete
; LSeek 42 *none*
; CHMod 43 Get_file_info, Set_File_Attribute
; IOCtl 44 DEVIOCALL
; XDup 45 *none*
; XDup2 46 *none*
; Current_Dir 47 $Current_Dir
; Alloc 48 $Alloc
; Dealloc 49 $Dealloc
; Setblock 4A $SetBlock
; Exec 4B
; Exit 4C $abort...
; Wait 4D *none*
; Find_First 4E DOS_Search_First
; Find_Next 4F DOS_Search_Next
; Set_Current_PDB 50 *none*
; Get_Current_PDB 51 *none*
; Get_In_Vars 52 *none*
; SetDPB 53 *none*
; Get_Verify_On_Write 54 *none*
; Dup_PDB 55
; Rename 56 DOS_Rename
; File_Times 57 *none*
; AllocOper 58 *none*
; GetExtendedError 59 *none*
; CreateTempFile 5A DOS_Create_New
; CreateNewFile 5B DOS_Create_New
; LockOper 5C
; ServerCall 5D
; UserOper 5E
; AssignOper 5F
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