; Temporary Runix kernel v2.0 file for debug - 22/11/2021 ; (re-write kernel for test by using previous version without a major defect) ; **************************************************************************** ; Retro UNIX 386 v1 Kernel (v0.2.2.4) - SYSDEFS.INC ; Last Modification: 27/12/2022 ; ; ///////// RETRO UNIX 386 V1 SYSTEM DEFINITIONS /////////////// ; (Modified from ; Retro UNIX 8086 v1 system definitions in 'UNIX.ASM', 01/09/2014) ; ((UNIX.ASM (RETRO UNIX 8086 V1 Kernel), 11/03/2013 - 01/09/2014)) ; UNIX.ASM (MASM 6.11) --> SYSDEFS.INC (NASM 2.11) ; ---------------------------------------------------------------------------- ; ; Derived from UNIX Operating System (v1.0 for PDP-11) ; (Original) Source Code by Ken Thompson (1971-1972) ; ; ; ; **************************************************************************** ; 10/01/2022 - Retro UNIX 386 v1.2 ; (SB structure has been moved here from 'ux.s' ; to overcome NASM's bss addressing bug !!!) ; (('ux.s' bss section addresses are being overlapped ; when SB structure is defined in 'ux.s')) struc SB ; SuperBlock .Header: resd 1 ;.HiddenSects: .BootSectAddr: resd 1 ; Hidden Sectors ;.TotalSects: .VolumeSize: resd 1 ; Entire Volume/Partition Size (includes ext. volume) .Version: resd 1 .BlockSize: resd 1 .InodeCount: resd 1 .FreeMapAddr: resd 1 .FreeMapSize: resd 1 .InodeMapAddr: resd 1 .InodeMapSize: resd 1 .InodeTblAddr: resd 1 .InodeTblSize: resd 1 .FreeInodes: resd 1 .FirstFreeIno: resd 1 .FreeBlocks: resd 1 .FirstFreeBlk: resd 1 .BootSecParms: resb 19 ; v1 .BSExtension: resb 5 ; v2 HDFS .Status: resb 1 ; 12/05/2021 (system modification status) (*) .Pdrv: resb 1 ; Physical disk number (index) ; 12/05/2021 (*) .Uno: resw 1 ; user/process number ; 12/05/2021 (*) .ModifTime: resd 1 ; (last) modification time (*) .ExtdVolTbl: resd 1 ; Extended Volume Start/Table Address .ExtdVolSize: resd 1 ; Extended Volume (swap section etc.) Size .LBA_rw: resb 1 .ClusterSize: resb 1 .ReadOnly: resb 1 ; (SB will not be written to disk if bit 0 is 1) .Mounted: resb 1 .MountInode: resd 1 ; double word .DevMajor: resb 1 .DevMinor: resb 1 .LongName: resb 1 .Direntry32: resb 1 ; 18/07/2021 .FileBuffer: resd 1 .ItabBuffer: resd 1 .ImapBuffer: resd 1 .FmapBuffer: resd 1 ; 15/07/2021 .LastInode: resd 1 ; 02/05/2021 .FmapIndex: resd 1 .ImapIndex: resd 1 .ItableIndex: resd 1 .Reserved: resb 508-148 ; 18/07/2021 .Footer: resd 1 endstruc ; 10/01/2022 - Retro UNIX 386 v1.2 ; (file structure has been moved here from 'ux.s' ; to overcome NASM's bss addressing bug !!!) ; (('ux.s' bss section addresses are being overlapped ; when file structure is defined in 'ux.s')) ; 22/11/2021 ; 21/07/2021 - Retro UNIX 386 v2 open file structure revision struc file ; open files (fsp) structure .inode: resw 1 ; inode number of open file (32 bit) .i32: resw 1 ; higher word of inode number (reserved) .drive: resb 1 ; logical drive (disk) number .flags: resb 1 ; open mode and status .count: resb 1 ; number of processes that have file open ;.rsvd: resb 1 ; reserved byte (for next versions) .mnt: resb 1 ; mnttab index+1 (0 = not mounted) .offset: resd 1 ; file offset/pointer (64 bit) .o64: resd 1 ; higher 32 bit of file offset .size: ; = 16 endstruc nproc equ 16 ; number of processes ntty equ 8 ; 8+1 -> 8 (10/05/2013) ;nbuf equ 6 ; number of buffers (04/02/2016) nbuf equ 16 ; number of buffers ; 11/06/2022 nfiles equ 50 ; NFILES equ 50 ; 02/01/2022 ; 27/12/2021 ;NFILES equ 32 ; temporary ! ( 27/12/2021) ; 02/01/2022 ;OPENFILES equ 10 ; open files (for user) ; 28/03/2020 ;csgmnt equ 2000h ; 26/05/2013 (segment of process 1) ;core equ 0 ; 19/04/2013 ;ecore equ 32768 - 64 ; 04/06/2013 (24/05/2013) ; (if total size of argument list and arguments is 128 bytes) ; maximum executable file size = 32768-(64+40+128-6) = 32530 bytes ; maximum stack size = 40 bytes (+6 bytes for 'IRET' at 32570) ; initial value of user's stack pointer = 32768-64-128-2 = 32574 ; (sp=32768-args_space-2 at the beginning of execution) ; argument list offset = 32768-64-128 = 32576 (if it is 128 bytes) ; 'u' structure offset (for the '/core' dump file) = 32704 ; '/core' dump file size = 32768 bytes ; 08/03/2014 ;sdsegmnt equ 6C0h ; 256*16 bytes (swap data segment size for 16 processes) ; 19/04/2013 Retro UNIX 8086 v1 feaure only ! ;;sdsegmnt equ 740h ; swap data segment (for user structures and registers) ; 30/08/2013 time_count equ 4 ; 10 --> 4 01/02/2014 ; 05/02/2014 ; process status ;SFREE equ 0 ;SRUN equ 1 ;SWAIT equ 2 ;SZOMB equ 3 ;SSLEEP equ 4 ; Retro UNIX 8086 V1 extension (for sleep and wakeup) ; 09/03/2015 userdata equ 80000h ; user structure data address for current user ; temporary swap_queue equ 90000h - 2000h ; swap queue address ; temporary swap_alloc_table equ 0D0000h ; swap allocation table address ; temporary ; 17/09/2015 ESPACE equ 48 ; [u.usp] (at 'sysent') - [u.sp] value for error return ; 27/12/2022 (40) ; 12/01/2022 (37,38,39) ; 21/09/2015 (36) ; 01/07/2015 (35) ; 14/07/2013 (0-34) ; UNIX v1 system calls _rele equ 0 _exit equ 1 _fork equ 2 _read equ 3 _write equ 4 _open equ 5 _close equ 6 _wait equ 7 _creat equ 8 _link equ 9 _unlink equ 10 _exec equ 11 _chdir equ 12 _time equ 13 _mkdir equ 14 _chmod equ 15 _chown equ 16 _break equ 17 _stat equ 18 _seek equ 19 _tell equ 20 _mount equ 21 _umount equ 22 _setuid equ 23 _getuid equ 24 _stime equ 25 _quit equ 26 _intr equ 27 _fstat equ 28 _emt equ 29 _mdate equ 30 _stty equ 31 _gtty equ 32 _ilgins equ 33 _sleep equ 34 ; Retro UNIX 8086 v1 feature only ! _msg equ 35 ; Retro UNIX 386 v1 feature only ! _geterr equ 36 ; Retro UNIX 386 v1 feature only ! ; 12/01/2022 - Retro UNIX 386 v1.2 ; Retro UNIX 386 v2 system calls _setgid equ 37 _getgid equ 38 _ver equ 39 ; (get) Retro Unix 386 version ; 27/12/2022 - Retro UNIX 386 v1.2 _mem equ 40 ; get available memory %macro sys 1-4 ; 03/09/2015 ; 13/04/2015 ; Retro UNIX 386 v1 system call. %if %0 >= 2 mov ebx, %2 %if %0 >= 3 mov ecx, %3 %if %0 = 4 mov edx, %4 %endif %endif %endif mov eax, %1 int 30h %endmacro ; 13/05/2015 - ERROR CODES ERR_FILE_NOT_OPEN equ 10 ; 'file not open !' error ERR_FILE_ACCESS equ 11 ; 'permission denied !' error ; 14/05/2015 ERR_DIR_ACCESS equ 11 ; 'permission denied !' error ERR_FILE_NOT_FOUND equ 12 ; 'file not found !' error ERR_TOO_MANY_FILES equ 13 ; 'too many open files !' error ERR_DIR_EXISTS equ 14 ; 'directory already exists !' error ; 16/05/2015 ERR_DRV_NOT_RDY equ 15 ; 'drive not ready !' error ; 18/05/2015 ERR_DEV_NOT_RDY equ 15 ; 'device not ready !' error ERR_DEV_ACCESS equ 11 ; 'permission denied !' error ERR_DEV_NOT_OPEN equ 10 ; 'device not open !' error ; 07/06/2015 ERR_FILE_EOF equ 16 ; 'end of file !' error ERR_DEV_VOL_SIZE equ 16 ; 'out of volume' error ; 09/06/2015 ERR_DRV_READ equ 17 ; 'disk read error !' ERR_DRV_WRITE equ 18 ; 'disk write error !' ; 16/06/2015 ERR_NOT_DIR equ 19 ; 'not a (valid) directory !' error ERR_FILE_SIZE equ 20 ; 'file size error !' ; 22/06/2015 ERR_NOT_SUPERUSER equ 11 ; 'permission denied !' error ERR_NOT_OWNER equ 11 ; 'permission denied !' error ERR_NOT_FILE equ 11 ; 'permission denied !' error ; 23/06/2015 ERR_FILE_EXISTS equ 14 ; 'file already exists !' error ERR_DRV_NOT_SAME equ 21 ; 'not same drive !' error ERR_DIR_NOT_FOUND equ 12 ; 'directory not found !' error ERR_NOT_EXECUTABLE equ 22 ; 'not executable file !' error ; 27/06/2015 ERR_INV_PARAMETER equ 23 ; 'invalid parameter !' error ERR_INV_DEV_NAME equ 24 ; 'invalid device name !' error ; 29/06/2015 ERR_TIME_OUT equ 25 ; 'time out !' error ERR_DEV_NOT_RESP equ 25 ; 'device not responding !' error ; 08/02/2022 ; (error numbers from TRDOS 386 v2.0 'sysdefs.s') ; 10/10/2016 ERR_INV_FILE_NAME equ 26 ; 'invalid file name !' error ; 18/05/2016 ERR_MISC equ 27 ; miscellaneous/other errors ; 15/10/2016 ERR_INV_FORMAT equ 28 ; 'invalid format !' error ERR_INV_DATA equ 29 ; 'invalid data !' error ; 16/10/2016 ERR_DISK_WRITE equ 30 ; 'disk write protected !' ; 08/02/2022 ERR_INV_FS equ 28 ;'invalid fs/superblock !' error ; 12/06/2022 ; printer errors ERR_PRN_NOT_RDY equ 15 ; 'device not ready !' error ERR_PRN_TIMEOUT equ 25 ; 'time out !' error ERR_PRN_PAPER equ 31 ; 'out of paper !' error ERR_PRN_IO equ 32 ; 'io error !' error ERR_PRN_BUSY equ 34 ; 'busy !' error ; 26/08/2015 ; 24/07/2015 ; 24/06/2015 MAX_ARG_LEN equ 256 ; max. length of sys exec arguments ; 01/07/2015 MAX_MSG_LEN equ 255 ; max. msg length for 'sysmsg' ; ; 26/11/2021 ('no free blocks on disk !' error) ERR_ALLOC equ 33 ; 'disk allocation error !' ; 22/11/2021 ERR_READ_ONLY_FS equ 30 ; 'read only file system !' error ; 28/11/2021 ERR_INV_FILE equ 255 ; 'invalid file (inode) !' error ; 04/12/2021 ERR_PERM_DENIED equ 11 ; 'permission denied !' error ; 11/12/2021 ERR_INV_FUNC equ 1 ; 'invalid system call !' error ; 10/01/2022 ERR_INO_ALLOC equ 33 ; 'inode allocation error !' ERR_NOT_REGULAR equ 255 ; 'not regular file directory !' error ; 12/01/2022 - Retro UNIX 386 v1.2 %define s.time systm+504 ; boot/sysinit time (or current time)