A2osX/SYS/KERNEL.S.PS.txt
2020-06-09 15:40:21 +02:00

928 lines
17 KiB
Plaintext
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

NEW
AUTO 3,1
*--------------------------------------
.DUMMY
.OR ZPTMP+8 7 Bytes
PS.Flags .BS 1
PS.ArgV .BS 2
PS.ArgSize .BS 2
PS.NewPSPtr .BS 2
.ED
*/--------------------------------------
* # ExecL
* ## C / CSH
* `int execl(const char *cmdline, short int flags);`
* ## ASM
* `>PUSHW cmdline`
* `>PUSHB flags`
* `>SYSCALL execl`
* ## RETURN VALUE
* A = Child PSID
*\--------------------------------------
K.ExecL >PULLB PS.Flags
>LDYAI 256
jsr K.GetMem
bcs .99
stx .90+1
>STYA PS.ArgV
>PUSHYA
jsr K.Arg2ArgV cmdline on stack, push buffer
bcs .9
jsr PS.Exec
.9 php
pha
.90 lda #$ff SELF MODIFIED
jsr K.FreeMem
pla
plp
.99 rts
*/--------------------------------------
* # ExecV
* ## C / CSH
* `int execv(const char* argv[], short int flags);`
* ## ASM
* `>PUSHW argv`
* `>PUSHB flags`
* `>SYSCALL execv`
* ## RETURN VALUE
* A = Child PSID
*\--------------------------------------
K.ExecV >PULLB PS.Flags
>PULLW PS.ArgV
PS.Exec jsr PS.CreateChild A=PID,Child S.PS at PS.NewPSPtr,PS.Load.hMem
bcs .9
sta .8+1
stz K.IOBuf If !=0 after PS.Load, it's a script
jsr PS.Load
bcs .90
jsr PS.AddArgV K.IOBuf= /.../SHELL, K.Buf256=/.../SCRIPT
bcc .8 or K.IOBuf= 0, K.Buf256=/.../BINFILE
.90 pha save error code
>PUSHBI 2
lda .8+1
jsr K.Kill
pla get back error code
sec
rts
.8 lda #$ff SELF MODIFIED
* clc
.9 rts
*/--------------------------------------
* # Fork
* ## C
* `short int fork();`
* ## ASM
* `>SYSCALL fork`
* ## RETURN VALUE
* A = Child PSID
*\--------------------------------------
K.Fork jsr PS.CreateChild A=PID,Child S.PS at PS.NewPSPtr,PS.Load.hMem
bcs .9
sta .8+1
ldy #S.PS.S
lda #S.PS.S.RUN
sta (PS.NewPSPtr),y
.8 lda #$ff SELF MODIFIED
* clc
.9 rts
*--------------------------------------
* PS.CreateChild
* in :
* out :
* A = PSID
*--------------------------------------
PS.CreateChild ldx #0
bra .2 Skip PS0
.1 lda PS.Table.PID,x
beq .4 Found an empty slot
.2 inx
cpx CORE.PSCount
bne .1
cpx #K.PS.MAX
bne .3
lda #E.OOH
sec
rts
.99 plx
rts
.3 inc CORE.PSCount
.4 inc CORE.LastPSID Get a PSID not already running
beq .4 not = 0
lda CORE.LastPSID
jsr CORE.GetPS Y=PS Index, X,A unmodified
bcc .4 running...loop
lda CORE.LastPSID
sta PS.Table.PID,x
phx save PS Index
>LDYAI S.PS
jsr K.GetMem0 Blank Everything in this S.PS
bcs .99
>STYA PS.NewPSPtr
txa
plx
sta PS.Table.hPS,x
jsr Mem.SetOwner Set Ownership
lda PS.Flags
and #S.PS.F.CLOSEONX
sta (PS.NewPSPtr)
lda CORE.LastPSID
ldy #S.PS.PID
sta (PS.NewPSPtr),y
lda #S.PS.F.NOHUP
bit PS.Flags
beq .5
lda PS.Table.hPS Select PS0
jsr K.GetMemPtr
bra .6
.5 >LDYA pPs
.6 >STYA ZPPtr1
ldy #S.PS.PID
lda (ZPPtr1),y
dey #S.PS.PPID
sta (PS.NewPSPtr),y
ldy #S.PS.hCWD copy hPREFIX...
lda (ZPPtr1),y
jsr K.GetMemPtr
jsr K.StrDup
bcs .9
jsr Mem.SetOwner Set Ownership
txa
ldy #S.PS.hCWD
sta (PS.NewPSPtr),y
ldy #S.PS.hENV
lda (ZPPtr1),y
jsr MEM.DupX dup hENV from parent PS
bcs .9
ldy #S.PS.hENV
sta (PS.NewPSPtr),y
ldy #S.PS.hStdIn
.7 lda (ZPPtr1),y
sta (PS.NewPSPtr),y
iny
cpy #S.PS.hStdErr+1
bne .7
ldy #S.PS.hSession
lda (ZPPtr1),y
sta (PS.NewPSPtr),y
* tax
* lda S.Table.hSID-1,x
* jsr MEM.GetMemByID
* jsr MEM.IncRefCnt
lda #S.PS.F.HOLD
bit PS.Flags
beq .8
ora (ZPPtr1)
sta (ZPPtr1) HOLD parent PS
lda CORE.LastPSID
ldy #S.PS.CPID
sta (ZPPtr1),y
.8
* lda #S.PS.S.INIT
* ldy #S.PS.S
* sta (PS.NewPSPtr),y Make this PS Init....
lda CORE.LastPSID Exit with A=PSID
clc
rts
.9 pha
>PUSHBI 2
lda CORE.LastPSID
jsr K.Kill
pla
sec
rts
*--------------------------------------
PS.Load ldy #$ff
.1 iny
lda (PS.ArgV),y
beq .2 no / in path...try search in PATH
cmp #'/'
bne .1
>PUSHW PS.ArgV found /, some path specified, no search
>PUSHWI K.S.STAT
>SYSCALL2 stat
bcc .6 REAL path in K.Buf256
.99 rts
.2 >LDYA PS.ArgV
jsr ENV.Search.PATH Get fullpath in K.Buf256
bcc .6
>LDYA PS.ArgV
jsr ENV.Search.CWD
bcs .99
.6 lda K.S.STAT+S.STAT.P.TYPE
cmp #S.FI.T.BIN
bne .7
jmp PS.LoadBIN
.7 cmp #S.FI.T.TXT
beq PS.Load.SCRIPT
* cmp #S.FI.T.SYS
* bra *
PS.Load.IPATH lda #E.BADPATH
.HS 2C
PS.Load.IBIN lda #E.IBIN
sec
PS.Load.RTS rts
PS.Load.SCRIPT ldx #$ff
.10 inx Save Script name in IOBuf
lda K.Buf256,x
sta K.IOBuf,x
bne .10
jsr PS.LoadGetHeader
bcs PS.Load.RTS
>PUSHWI PS.Load.ROOT
>PUSHWI K.Buf256 K.Buf256 = "$ROOT"
>SYSCALL2 GetEnv
bcs PS.Load.IPATH
ldx #$ff
.1 inx
lda K.Buf256,x
bne .1
ldy #0
.3 lda K.IOBuf+128,y Check HEADER= "#!/"
cmp PS.Load.HEADER,y
bne PS.Load.IBIN
iny
cpy #3
bne .3
.4 iny
inx
lda K.IOBuf+128-1,y
sta K.Buf256-1,x K.Buf256 = "${ROOT}BIN/SHELL"
beq .5
eor #C.CR
bne .4
sta K.Buf256-1,x K.Buf256 = "${ROOT}BIN/SHELL\0"
.5 >PUSHWI K.Buf256
>PUSHWI K.S.STAT
>SYSCALL2 stat
bcs PS.Load.RTS
lda K.S.STAT+S.STAT.P.TYPE
cmp #S.FI.T.BIN
beq PS.LoadBIN
jmp PS.Load.IBIN
*--------------------------------------
PS.LoadBIN jsr BIN.Load K.Buf256= "${ROOT}BIN/SH\0", K.IOBuf=/.../SCRIPT
bcs .9
>STYA ZPPtr4 save PTR to Code Segment
phy
ldy #S.PS.ZP.CODE+1
sta (PS.NewPSPtr),y save pCode HI...
dey
pla
sta (PS.NewPSPtr),y save pCode LO...
txa
ldy #S.PS.hCS
sta (PS.NewPSPtr),y save CS hMem in S.PS
* jsr MEM.GetMemByID
* jsr Mem.SetOwner Set Ownership
ldy #H.BIN.F Get Bin S.PS.F
lda (ZPPtr4),y
beq .1
ldy #S.PS.F update PS S.PS.F
ora (PS.NewPSPtr),y
sta (PS.NewPSPtr),y
.1 ldy #H.BIN.DS.SIZE+1
lda (ZPPtr4),y Load DS.SIZE HI
tax
dey
ora (ZPPtr4),y
beq .2 DS.SIZE=0...
lda (ZPPtr4),y
tay
txa Y,A = DS.SIZE
ldx #S.MEM.F.INIT0+S.MEM.F.DATA
jsr MEM.GetMem.YAX
bcs .9
phy
ldy #S.PS.ZP.DATA+1
sta (PS.NewPSPtr),y save pData HI...
dey
pla
sta (PS.NewPSPtr),y save pData LO...
txa
ldy #S.PS.hDS
sta (PS.NewPSPtr),y save DS hMem in S.PS
jsr Mem.SetOwner Set Ownership
.2 ldy #H.BIN.SS.SIZE
lda (ZPPtr4),y Load SS.SIZE
tay
beq .3 SS.SIZE.LO=0, set as default $100
lda #$ff SS.SIZE.HI
.3 inc
ldx #S.MEM.F.NOCROSS+S.MEM.F.STACK
jsr MEM.GetMem.YAX
bcs .9
phy save pStack base LO
ldy #S.PS.ZP.STACK+1
sta (PS.NewPSPtr),y save pStack HI...
ldy #S.PS.ZP.LOCAL+1
sta (PS.NewPSPtr),y save pLocal HI...
pla make pStack = Base...
ldy #H.BIN.SS.SIZE ...plus Stack size
* clc
adc (ZPPtr4),y
ldy #S.PS.ZP.STACK
sta (PS.NewPSPtr),y
txa
ldy #S.PS.hSS
sta (PS.NewPSPtr),y save SS hMem in S.PS
clc Potentially CS from ADC (ZPPtr4),y
jmp Mem.SetOwner Set Ownership
.9 rts
*--------------------------------------
PS.LoadGetHeader
>PUSHWI K.IOBuf
>PUSHBI O.RDONLY
>PUSHBI S.FI.T.TXT
>PUSHWZ Aux type
>SYSCALL2 fopen
bcs .9
sta .1+1
>PUSHWI 128
>PUSHWI K.IOBuf+128
.1 lda #$ff SELF MODIFIED
>SYSCALL2 fread
php
pha
lda .1+1
>SYSCALL2 fclose
pla
plp
.9 rts
*--------------------------------------
PS.Load.ROOT .AZ "ROOT"
PS.Load.HEADER .AZ "#!/"
*--------------------------------------
* K.Buf256= /.../SHELL, K.IOBuf=/.../SCRIPT
* - or -
* K.Buf256=/.../BINFILE,K.IOBuf=0
* Buf256+IOBUF(?)+PS.ArgV[1,...] -> #S.PS.hARGV
*--------------------------------------
PS.AddArgV ldy #$ff In both cases, remove ARGV[0]
.60 iny
lda (PS.ArgV),y
bne .60
tya
sec
adc PS.ArgV
sta PS.ArgV
bcc .70
inc PS.ArgV+1 Skip old ARGV[0] = scriptename
.70 >LDYAI K.Buf256
jsr K.strlen
>STYA PS.ArgSize
lda K.IOBuf is there a /BIN/SHELL ?
beq .10
>LDYAI K.IOBuf
jsr K.strlen
jsr PS.AddYAp12ArgSize
.10 ldx #0 For now, 0 args...
lda K.IOBuf
beq .11 +1 for scriptpath
inx
.11 >LDYA PS.ArgV
>STYA ZPPtr1
.1 lda (ZPPtr1)
beq .4
inx
ldy #0
.2 iny
lda (ZPPtr1),y
bne .2
* lda #0
jsr PS.AddYAp12ArgSize
jsr SHARED.AddYp1ToPtr1
bra .1
.4 txa
ldy #S.PS.ARGC
sta (PS.NewPSPtr),y
>LDYA PS.ArgSize Add 1 for ending 0
iny
bne .5
inc
.5 iny Add ONE MORE ?????!!!!
bne .51
inc
.51 jsr K.GetMem
bcs .9
>STYA ZPPtr2 Target Buffer
txa
ldy #S.PS.hARGV
sta (PS.NewPSPtr),y
>LDYAI K.Buf256
jsr PS.AddYAToStrV
lda K.IOBuf
beq .6
>LDYAI K.IOBuf
jsr PS.AddYAToStrV
.6 >LDYA PS.ArgV
>STYA ZPPtr1
.7 lda (ZPPtr1)
sta (ZPPtr2)
beq .8 Ending \0
jsr PS.AddPtr1ToStrV
bra .7
.8 clc
.9 rts
*--------------------------------------
PS.AddYAToStrV >STYA ZPPtr1
PS.AddPtr1ToStrV
ldy #$ff
.2 iny
lda (ZPPtr1),y
sta (ZPPtr2),y
bne .2
jsr SHARED.AddYp1ToPtr1
jmp SHARED.AddYp1ToPtr2
*--------------------------------------
PS.AddYAp12ArgSize
pha
tya
sec +1 for \0
adc PS.ArgSize
sta PS.ArgSize
pla
adc PS.ArgSize+1
sta PS.ArgSize+1
rts
*/--------------------------------------
* # Kill
* ## C
* `int kill(short int pid, short int sig);`
* ## ASM
* `>PUSHB sig`
* `lda pid`
* `>SYSCALL kill`
* ## RETURN VALUE
* A = Child PSID
*\--------------------------------------
K.Kill.PID .BS 1
*--------------------------------------
K.Kill cmp #0
beq .99 CS
sta K.Kill.PID
jsr CORE.GetPSByID
bcs .99
>STYA ZPPtr1
>PULLA
cmp #2+1
bcs .9
asl
tax
jmp (.1,x)
.1 .DA K.Kill.0
.DA K.Kill.1
.DA K.Kill.2
.9 lda #E.SYN
* sec
rts
.99 >RET 1
*--------------------------------------
K.Kill.1 ldy #S.PS.S
lda #S.PS.S.QUIT
sta (ZPPtr1),y
K.Kill.0 clc
rts
K.Kill.2 ldy #S.PS.hSession
lda (ZPPtr1),y
tax
* lda S.Table.hSID-1,x
* jsr K.FreeMem
ldy #S.PS.hENV
lda (ZPPtr1),y
>SYSCALL2 FreeStkObj
ldx #4
.11 ldy .10,x
lda (ZPPtr1),y
beq .12
jsr K.FreeMem
.12 dex
bpl .11
lda (ZPPtr1)
bit #S.PS.F.CLOSEONX
beq .1
ldy #S.PS.hStdOut
lda (ZPPtr1),y
>SYSCALL2 fclose
.1 lda K.Kill.PID
ldx #0
.2 cmp PS.Table.PID,x
beq .3
inx
cpx CORE.PSCount
bne .2
bra *
.3 stz PS.Table.PID,x
lda PS.TABLE.hPS,x
stz PS.TABLE.hPS,x
jmp K.FreeMem
.10 .DA #S.PS.hSS,#S.PS.hDS,#S.PS.hCS
.DA #S.PS.hARGV,#S.PS.hCWD
*/--------------------------------------
* # LoadTxtFile
* Load TXT a file in memory (with ending 0)
* ## C
* `int loadtxtfile ( const char * filename, short int flags, short int ftype, int auxtype );`
* ## ASM
* **In:**
* `>PUSHW filename`
* `>PUSHB flags`
* `>PUSHB ftype`
* `>PUSHW auxtype`
* `>SYSCALL loadtxtfile`
* ## RETURN VALUE
* Y,A = File Length (without ending 0)
* X = hMem of Loaded File
*\--------------------------------------
.DUMMY
.OR ZPTMP 5 Bytes
FIO.bTXT .BS 1
FIO.hFILE .BS 1
FIO.MemPtr .BS 2
FIO.hMem .BS 1
.ED
*--------------------------------------
K.LoadTxtFile sec
.HS 90 BCC
*/--------------------------------------
* # LoadFile
* Load a file in memory
* ## C
* `int loadfile ( const char * filename, short int flags, short int ftype, int auxtype );`
* ## ASM
* **In:**
* `>PUSHW filename`
* `>PUSHB flags`
* `>PUSHB ftype`
* `>PUSHW auxtype`
* `>SYSCALL loadfile`
* ## RETURN VALUE
* Y,A = File Length
* X = hMem of Loaded File
*\--------------------------------------
K.LoadFile clc
ror FIO.bTXT
>SYSCALL2 FOpen
bcs .9
.12 sta FIO.hFILE
>PUSHA
>PUSHWI K.S.Stat
>SYSCALL2 FStat
bcs .11
lda K.S.Stat+S.STAT.SIZE+3
ora K.S.Stat+S.STAT.SIZE+2
bne .10
>LDYA K.S.Stat+S.STAT.SIZE
bit FIO.bTXT Add 1 to buffer size for ending 0
bpl .1
iny
bne .1
inc
bne .1
.10 lda #E.FTB
.11 bra .99
.1 jsr K.GetMem
bcs .99
>STYA FIO.MemPtr
stx FIO.hMem
>PUSHW K.S.Stat+S.STAT.SIZE
>PUSHW FIO.MemPtr
lda FIO.hFILE
>SYSCALL2 FRead
bcc .2
pha
lda FIO.hMem
jsr K.FreeMem
pla
.99 pha
lda FIO.hFILE
>SYSCALL2 FClose
pla
sec
.9 rts
.2 sty .7+1
sta .8+1
bit FIO.bTXT
bpl .5
pha set ending 0
tya
* clc
adc FIO.MemPtr
sta .4+1
pla
adc FIO.MemPtr+1
sta .4+2
.4 stz $ffff Self Modified
.5 jsr .99 close file
.7 ldy #$ff SELFMODIFIED
.8 lda #$ff SELFMODIFIED
ldx FIO.hMem
clc
rts
*/--------------------------------------
* # FileSearch
* Search a file in the provided PATH list
* And return, if found, the full path to it.
* ## C
* `int filesearch( char *filename, char *searchpath, char *fullpath, stat *filestat);`
* ## ASM
* **In:**
* `>PUSHW filename`
* `>PUSHW fullpath`
* `>PUSHW searchpath`
* `>PUSHW filestat`
* `>SYSCALL filesearch`
* ## RETURN VALUE
* CC : success
* DstBuf = FilePath
* DstStat = S.STAT
* CS : not found
*\--------------------------------------
K.FileSearch >PULLW .4+1 DstStat
>PULLW .2+1 DstBuf
>PULLW ENV.Search.2+1 path to search
>PULLW ENV.Search.4+1 filename to find
stz ENV.Search.98+1
jsr ENV.Search
bcs K.FileSearch.RTS
ldx #$ff
.1 inx
lda K.Buf256,x
.2 sta $ffff,x Self Modified
bne .1
ldx #S.STAT-1
.3 lda K.S.STAT,x
.4 sta $ffff,x Self Modified
dex
bpl .3
* clc
K.FileSearch.RTS
rts
*--------------------------------------
ENV.Search.CWD >STYA ENV.Search.4+1 filename to find
ldy #S.PS.hCWD
lda (PS.NewPSPtr),y
jsr K.GetMemPtr
>STYA ENV.Search.2+1
stz ENV.Search.98+1
bra ENV.Search
ENV.Search.LIB ldx #0
.HS 2C BIT ABS
ENV.Search.DRV ldx #2
.HS 2C BIT ABS
ENV.Search.PATH ldx #4
>STYA ENV.Search.4+1 filename to find
>PUSHW ENV.VARS,x
>PUSHWI 0 allocate...
>SYSCALL2 GetEnv get value for Search Path
bcs K.FileSearch.RTS
>STYA ENV.Search.2+1
stx ENV.Search.98+1
ENV.Search stz ENV.Search.1+1
ENV.Search.1 ldy #0 Self Modified Index in Search list string
ldx #0
ENV.Search.2 lda $ffff,y SELF MODIFIED
beq ENV.Search.3 end of string, try it....
iny
cmp #':'
beq ENV.Search.3
sta K.Buf256,x
inx
bra ENV.Search.2
ENV.Search.3 txa
beq ENV.Search.98 String is empty....nothing to try
sty ENV.Search.1+1 save current index
ldy #0
ENV.Search.4 lda $ffff,y Self Modified, Append Filename...
sta K.Buf256,x
beq ENV.Search.5
iny
inx
bra ENV.Search.4
ENV.Search.5 >PUSHWI K.Buf256
>PUSHWI K.S.STAT
>SYSCALL2 stat
bcs ENV.Search.1 Failed...retry next path...
lda K.S.STAT+S.STAT.P.TYPE
cmp #S.FI.T.DIR Dir ?
beq ENV.Search.1
jsr ENV.Search.98 Discard Expanded hSrch list
clc
rts
ENV.Search.98 lda #$ff SELF MODIFIED : Discard Search list
beq .1
jsr K.FreeMem
.1 lda #MLI.E.FNOTFND
sec
rts
*--------------------------------------
ENV.VARS .DA .1
.DA .2
.DA .3
.1 .AZ "LIB"
.2 .AZ "DRV"
.3 .AZ "PATH"
*/--------------------------------------
* # GetMemStat
* **In:**
* Y,A = Ptr to 24 bytes buffer
* ## RETURN VALUE
* Buffer filled with memory stats
*\--------------------------------------
K.GetMemStat >STYA ZPPtr1
ldy #23
ldx #7
.1 lda DevMgr.Stat,x
sta (ZPPtr1),y
dey
dex
bpl .1
sta SETREADAUX
jsr .2
sta CLRREADAUX
.2 ldx #7
.3 lda Mem.Table,x
sta (ZPPtr1),y
dey
dex
bpl .3
clc
rts
*--------------------------------------
MAN
SAVE USR/SRC/SYS/KERNEL.S.PS
LOAD USR/SRC/SYS/KERNEL.S
ASM