246 lines
10 KiB
NASM
246 lines
10 KiB
NASM
; SCCSID = @(#)msdata.asm 1.8 85/09/12
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;
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;----------------------------------------------------------------------------
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;
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; M008 : Renamed callback_ss & callback_sp to AbsRdWr_SS & AbsRdWr_SP
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; To be used in Absolute Read/Write DISK routines
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; M019 DB 10/26/90 - Disk write optimization: removed HIGH_SECTOR_TEMP.
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;
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;----------------------------------------------------------------------------
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;
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AsmVars <Debug, Redirector, ShareF>
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;
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;smr;--- These extrns should be in DOSCODE segment
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;
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DOSCODE SEGMENT BYTE PUBLIC 'CODE'
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;hkn; extrn ucase_tab:byte
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;hkn; extrn file_ucase_tab:byte
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;hkn; extrn file_char_tab:byte
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;hkn; extrn collate_tab:byte
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;hkn; extrn dbcs_tab:byte
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;hkn; extrn map_case:byte
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extrn DIVOV:near
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extrn QUIT:near
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extrn COMMAND:near
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extrn ABSDRD:near
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extrn ABSDWRT:near
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extrn Stay_resident:near
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extrn INT2F:near
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extrn CALL_ENTRY:near
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extrn IRETT:near
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DOSCODE ENDS
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;
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Break <Uninitialized data overlayed by initialization code>
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DOSDATA SEGMENT WORD PUBLIC 'DATA'
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; Init code overlaps with data area below
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; ORG 0
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PUBLIC MSDAT001S,MSDAT001E
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MSDAT001S label byte
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I_am TIMEBUF,6 ; Time read from clock device
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I_am DEVIOBUF,2 ; Buffer for I/O under file assignment
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;
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; The following areas are used as temp buffer in EXEC system call
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;
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I_am OPENBUF,128 ; buffer for name operations
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I_am RenBuf,128 ; buffer for rename destination
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; Buffer for search calls
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I_am SEARCHBUF,53 ; internal search buffer
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ifdef JAPAN
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I_am DummyCDS,curdirLen_JPN
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else
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I_am DummyCDS,curdirLen
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endif
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;
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; End of contiguous buffer
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;
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; Temporary directory entry for use by many routines. Device directory
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; entries (bogus) are built here.
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;
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PUBLIC DevFCB
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DEVFCB LABEL BYTE ; Uses NAME1, NAME2, combined
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; WARNING.. do not alter position of NAME1 relative to DEVFCB
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; without first examining BUILD_DEVICE_ENT. Look carefully at DOS_RENAME
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; as well as it is the only guy who uses NAME2 and DESTSTART.
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I_am NAME1,12 ; File name buffer
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I_am NAME2,13 ;
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I_am DESTSTART,WORD ;
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DB ((SIZE DIR_ENTRY) - ($ - DEVFCB)) DUP (?)
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;
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; End Temporary directory entry.
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;
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I_am ATTRIB,BYTE ; storage for file attributes
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I_am EXTFCB,BYTE ; TRUE => extended FCB in use
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I_am SATTRIB,BYTE ; Storage for search attributes
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I_AM open_access,BYTE ; access of open system call
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I_am FoundDel,BYTE ; true => file was deleted
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I_am Found_dev,BYTE ; true => search found a device
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I_am fSplice,BYTE ; true => do a splice in transpath
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I_am fSharing,BYTE ; TRUE => no redirection
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I_am SECCLUSPOS,BYTE ; Position of first sector within cluster
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I_am TRANS,BYTE ;
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I_am READOP,BYTE ;
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I_am THISDRV,BYTE ;
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I_am CLUSFAC,BYTE ;
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I_am CLUSSPLIT,BYTE ;
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I_am INSMODE,BYTE ; true => insert mode in buffered read
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I_am cMeta,BYTE ; count of meta'ed components found
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I_am VOLID,BYTE ;
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I_am exit_type,BYTE ; type of exit...
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EVEN
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; WARNING - the following two items are accessed as a word
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I_am CREATING,BYTE ; true => creating a file
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I_am DELALL,BYTE ; = 0 iff BUGBUG
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; = DIRFREE iff BUGBUG
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I_am EXITHOLD,DWORD ; Temp location for proc terminate
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I_am user_SP,WORD ; User SP for system call
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I_am user_SS,WORD ; User SS for system call
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I_am CONTSTK,WORD ;
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I_am THISDPB,DWORD ;
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I_am CLUSSAVE,WORD ;
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I_am CLUSSEC,DWORD ;>32mb AC0000
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I_am PREREAD,WORD ; 0 means preread; 1 means optional
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I_am FATBYT,WORD ; Used by ALLOCATE
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I_am FATBYTE,WORD ; Used by $SLEAZEFUNC
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I_am DEVPT,DWORD ;
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I_am THISSFT,DWORD ; Address of user SFT
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I_am THISCDS,DWORD ; Address of current CDS
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I_am THISFCB,DWORD ; Address of user FCB
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I_am SFN,WORD,<-1> ; SystemFileNumber found for accessfile
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I_am JFN,WORD ; JobFileNumber found for accessfile
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I_am PJFN,DWORD ; PointerJobFileNumber found for accessfile
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I_am WFP_START,WORD ;
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I_am REN_WFP,WORD ;
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I_am CURR_DIR_END,WORD ;
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I_am NEXTADD,WORD ;
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I_am LASTPOS,WORD ;
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I_am CLUSNUM,WORD ;
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I_am DIRSEC,DWORD ;>32mb AC0000
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I_am DIRSTART,WORD ;
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I_am SECPOS,DWORD ;>32mb Position of first sector accessed
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I_am VALSEC,DWORD ;>32mb Number of valid (previously written)
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; sectors
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I_am BYTSECPOS,WORD ; Position of first byte within sector
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I_am BYTPOS,4 ; Byte position in file of access
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I_am BYTCNT1,WORD ; No. of bytes in first sector
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I_am BYTCNT2,WORD ; No. of bytes in last sector
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I_am SECCNT,WORD ; No. of whole sectors
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I_am ENTFREE,WORD ;
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I_am ENTLAST,WORD ;
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I_am NXTCLUSNUM,WORD ;
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I_am GROWCNT,DWORD ;
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I_am CURBUF,DWORD ;
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I_am CONSft,DWORD ; SFT of console swapped guy.
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I_am SaveBX,WORD ;
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I_am SaveDS,WORD ;
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I_am restore_tmp,WORD ; return address for restore world
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I_am NSS,WORD
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I_am NSP,WORD
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I_am EXTOPEN_FLAG,WORD,<0> ;FT. extended open input flag ;AN000;
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I_am EXTOPEN_ON,BYTE,<0> ;FT. extended open conditional flag ;AN000;
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I_am EXTOPEN_IO_MODE,WORD,<0>;FT. extende open io mode ;AN000;
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I_am SAVE_DI,WORD ;FT. extende open saved DI ;AN000;
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I_am SAVE_ES,WORD ;FT. extende open saved ES ;AN000;
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I_am SAVE_DX,WORD ;FT. extende open saved DX ;AN000;
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I_am SAVE_CX,WORD ;FT. extende open saved CX ;AN000;
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I_am SAVE_BX,WORD ;FT. extende open saved BX ;AN000;
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I_am SAVE_SI,WORD ;FT. extende open saved SI ;AN000;
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I_am SAVE_DS,WORD ;FT. extende open saved DS ;AN000;
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; HIGH_SECTOR is a hack to allow passing 32-bit sector numbers where
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; we used to just pass 16 bits in a register. Now High_SECTOR holds
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; the high 16, the low 16 are still in the register.
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I_am HIGH_SECTOR,WORD,<0> ;>32mb higher sector # ;AN000;
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I_am UU_HIGH_SECTOR_TEMP,WORD,<0> ;M019: Unused
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I_am DISK_FULL,BYTE ;>32mb indicating disk full when 1 ;AN000;
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I_am TEMP_VAR,WORD ; temporary variable for everyone ;AN000;
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I_am TEMP_VAR2,WORD ; temporary variable 2 for everyone ;AN000;
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I_am DrvErr,BYTE ; used to save drive error ;AN000;
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I_am DOS34_FLAG,WORD,<0> ; common flag for DOS 3.4 ;AN000;
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I_am NO_FILTER_PATH,DWORD ; pointer to orignal path ;AN000;
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I_am NO_FILTER_DPATH,DWORD ; pointer to orignal path of destination;AN000;
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; M008
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I_am AbsRdWr_SS,WORD ; INT 25/26 user stack segment
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I_am AbsRdWr_SP,WORD ; INT 25/26 user stack offset
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I_am UU_Callback_flag,BYTE,<0> ; Unused
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; M008
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; make those pushes fast!!!
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EVEN
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StackSize = 180h ; gross but effective
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;;;StackSize = 300h ; This is a "trial" change IBM hasn't
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;;; ; made up their minds about
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;
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; WARNING!!!! DskStack may grow into AUXSTACK due to interrupt service.
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; This is NO problem as long as AUXSTACK comes immediately before DSKSTACK
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;
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PUBLIC RENAMEDMA,AuxStack,DskStack,IOStack
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RENAMEDMA LABEL BYTE ; See DOS_RENAME
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DB StackSize DUP (?) ;
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AuxStack LABEL BYTE
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DB StackSize DUP (?) ;
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DskStack LABEL BYTE
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DB StackSize DUP (?) ;
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IOStack LABEL BYTE
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; patch space for Boca folks.
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; Say What????!!! This does NOT go into the swappable area!
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; NOTE: We include the decl of ibmpatch in ms-dos even though it is not needed.
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; This allows the REDIRector to work on either IBM or MS-DOS.
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PUBLIC IBMPATCH
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IBMPATCH label byte
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I_am PRINTER_FLAG,BYTE,<0> ; [SYSTEM] status of PRINT utility
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I_am VOLCHNG_FLAG,BYTE,<0> ; [SYSTEM] true if volume label created
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I_am VIRTUAL_OPEN,BYTE,<0> ; [SYSTEM] non-zero if we opened a virtual file
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; Following 4 variables moved to MSDATA.asm from MSTABLE.asm (P4986)
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I_am FSeek_drive,BYTE ;AN000; fastseek drive #
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I_am FSeek_firclus,WORD ;AN000; fastseek first cluster #
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I_am FSeek_logclus,WORD ;AN000; fastseek logical cluster #
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I_am FSeek_logsave,WORD ;AN000; fastseek returned log clus #
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; I_am UU_ACT_PAGE,WORD,<-1> ;;;;;;; ;BL ; active EMS page ;AN000;
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I_am TEMP_DOSLOC,WORD,<-1> ;stores the temporary location of dos
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;at SYSINIT time.
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SWAP_END LABEL BYTE
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PUBLIC SWAP_END
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; THE FOLLOWING BYTE MUST BE HERE, IMMEDIATELY FOLLOWING SWAP_END. IT CANNOT
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; BE USED. If the size of the swap data area is ODD, it will be rounded up
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; to include this byte.
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DB ?
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;hkn; DB (512+80+32-(SWAP_END-ibmpatch)) DUP (?)
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DOSDATA ENDS
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DOSDATALAST SEGMENT
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MSDAT001e label byte
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DOSDATALAST ENDS
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