A2osX/SYS/KERNEL.S.PS.txt
2019-05-25 21:24:07 +02:00

611 lines
11 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+21
PS.Flags .BS 1
PS.ArgV .BS 2
PS.ArgSize .BS 2
PS.NewPSPtr .BS 2
.ED
*/--------------------------------------
* # ExecL
* ## C
* `int execl(const char* cmdline, short int flags);`
* ## ASM
* `>PUSHB flags`
* `>LDYA cmdline`
* `>SYSCALL execl`
* ## RETURN VALUE
* A = Child PSID
*\--------------------------------------
K.ExecL sty .1+1
sta .2+1
>PULLB PS.Flags
>LDYAI 256
jsr K.GetMem
bcs .99
stx .90+1
>STYA PS.ArgV
>PUSHYA
.1 ldy #$ff SELF MODIFIED
.2 lda #$ff SELF MODIFIED
jsr K.Args2ArgV
bcs .9
jsr PS.Exec
.9 php
pha
.90 lda #$ff SELF MODIFIED
jsr K.FreeMem
pla
plp
.99 rts
*/--------------------------------------
* # ExecV
* ## C
* `int execv(const char* argv[], short int flags);`
* ## ASM
* `>PUSHB flags`
* `>LDYA argv`
* `>SYSCALL execv`
* ## RETURN VALUE
* A = Child PSID
*\--------------------------------------
K.ExecV >STYA PS.ArgV
>PULLB PS.Flags
PS.Exec jsr PS.CreateChild A=PID,Child S.PS at PS.NewPSPtr,PS.Load.hMem
bcs .9
sta .8+1
stz K.IOBuf If !=0 after PS.Load, it's a script
jsr PS.Load
bcs .90
jsr PS.AddArgV K.IOBuf= /.../SHELL, K.Buf256=/.../SCRIPT
bcc .8 or K.IOBuf= 0, K.Buf256=/.../BINFILE
.90 pha save error code
.91 lda .8+1
jsr CORE.PSFree
pla get back error code
sec
rts
.8 lda #$ff SELF MODIFIED
.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 PS.SetMemOwner Set Ownership
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.hPREFIX copy hPREFIX...
lda (ZPPtr1),y
jsr K.GetMemPtr
jsr K.StrDup
bcs .9
jsr PS.SetMemOwner Set Ownership
txa
ldy #S.PS.hPREFIX
sta (PS.NewPSPtr),y
jsr ENV.Dup dup hENV from parent PS
bcs .9
ldy #S.PS.hENV
sta (PS.NewPSPtr),y
txa
dey
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.hSID
lda (ZPPtr1),y
sta (PS.NewPSPtr),y
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.F.INIT
ora (PS.NewPSPtr)
sta (PS.NewPSPtr) Make this PS Init....
lda CORE.LastPSID Exit with A=PSID
clc
rts
.9 pha
lda CORE.LastPSID
jsr CORE.PSFree
pla
sec
rts
*--------------------------------------
PS.Load ldy #$ff
.1 iny
lda (PS.ArgV),y
beq .2 no / in path...try search in PATH
cmp #'/'
bne .1
>PUSHWI K.S.STAT
>LDYA PS.ArgV found /, some path specified, no search
ldx #SYS.stat
jsr K.SYSCALL2.BANK
bcc .6 REAL path in K.Buf256
.99 rts
.2 >LDYA PS.ArgV
jsr ENV.Search.PATH Get fullpath in K.Buf256
bcc .6
ldy #S.PS.hPREFIX
lda (PS.NewPSPtr),y
jsr K.GetMemPtr
>STYA ENV.SearchPath
>LDYA PS.ArgV
jsr ENV.Search.YA
bcs .99
.6 lda K.S.STAT+S.STAT.P.TYPE
cmp #S.FI.T.BIN
beq PS.LoadBIN
.7 cmp #S.FI.T.TXT
beq PS.Load.SCRIPT
* cmp #S.FI.T.SYS
* bra *
PS.Load.IBIN lda #E.IBIN
.HS 2C
PS.Load.IPATH lda #E.BADPATH
sec
PS.Load.RTS rts
PS.Load.SCRIPT ldx #$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
>LDYAI PS.Load.ROOT
jsr K.GetEnv
bcs PS.Load.IPATH
>STYA .2+1
ldx #$ff
.1 inx
.2 lda $ffff,x SELF MODIFIED
sta K.Buf256,x K.Buf256 = "/ROOT/"
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.S.STAT
>LDYAI K.Buf256
ldx #SYS.stat
jsr K.SYSCALL2.BANK
bcs PS.Load.RTS
lda K.S.STAT+S.STAT.P.TYPE
cmp #S.FI.T.BIN
bne PS.Load.IBIN K.Buf256= /.../SHELL, K.IOBuf=/.../SCRIPT
*--------------------------------------
PS.LoadBIN >LDYAI K.Buf256
jsr BIN.Load
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 PS.SetMemOwner 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 PS.SetMemOwner Set Ownership
.2 ldy #H.BIN.SS.SIZE
lda (ZPPtr4),y Load SS.SIZE
ldy #S.PS.ZP.STACK
sta (PS.NewPSPtr),y save pStack LO...
tay
bne .3 SS.SIZE.LO=0, set as default $100
lda #1 SS.SIZE.HI
.HS 2C bit abs
.3 lda #0
ldx #S.MEM.F.ALIGN+S.MEM.F.STACK
jsr MEM.GetMem.YAX
bcs .9
ldy #S.PS.ZP.STACK+1
sta (PS.NewPSPtr),y save pStack HI...(LO already set to Stack TOP)
ldy #S.PS.ZP.LOCAL+1
sta (PS.NewPSPtr),y
txa
ldy #S.PS.hSS
sta (PS.NewPSPtr),y save SS hMem in S.PS
jsr PS.SetMemOwner Set Ownership
ldy #H.BIN.ZP.SIZE
lda (ZPPtr4),y
clc
adc #8 Add room for 4 saved PTR
ldy #S.PS.ZP.SIZE
sta (PS.NewPSPtr),y
clc
.9 rts
*--------------------------------------
PS.LoadGetHeader
>PUSHWI 0 Aux type
>PUSHBI S.FI.T.TXT
>PUSHBI O.RDONLY
>LDYAI K.IOBuf
ldx #SYS.fopen
jsr K.SYSCALL2.BANK
bcs .9
sta .1+1
>PUSHWI 128
>PUSHWI K.IOBuf+128
.1 lda #$ff SELF MODIFIED
ldx #SYS.fread
jsr K.SYSCALL2.BANK
php
pha
lda .1+1
ldx #SYS.fclose
jsr K.SYSCALL2.BANK
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 #$ff In both cases, remove ARGV[0]
.60 iny
lda (PS.ArgV),y
bne .60
tya
sec
adc PS.ArgV
sta PS.ArgV
bcc .70
inc PS.ArgV+1 Skip old ARGV[0] = scriptename
.70 >LDYAI K.Buf256
jsr K.strlen
>STYA PS.ArgSize
lda K.IOBuf is there a /BIN/SHELL ?
beq .10
>LDYAI K.IOBuf
jsr K.strlen
jsr PS.AddYAp12ArgSize
.10 ldx #0 For now, 0 args...
lda K.IOBuf
beq .11 +1 for scriptpath
inx
.11 >LDYA PS.ArgV
>STYA ZPPtr1
.1 lda (ZPPtr1)
beq .4
inx
ldy #0
.2 iny
lda (ZPPtr1),y
bne .2
* lda #0
jsr PS.AddYAp12ArgSize
.3 jsr MEM.AddYp1ToPtr1
bra .1
.4 txa
ldy #S.PS.ARGC
sta (PS.NewPSPtr),y
>LDYA PS.ArgSize Add 1 for ending 0
iny
bne .5
inc
.5 jsr K.GetMem
bcs PS.AddPtr1ToStrV.RTS
>STYA ZPPtr2 Target Buffer
txa
ldy #S.PS.hARGV
sta (PS.NewPSPtr),y
>LDYAI K.Buf256
jsr PS.AddYAToStrV
lda K.IOBuf
beq .6
>LDYAI K.IOBuf
jsr PS.AddYAToStrV
.6 >LDYA PS.ArgV
>STYA ZPPtr1
*--------------------------------------
PS.AddPtr1ToStrVUntil0
.1 lda (ZPPtr1)
sta (ZPPtr2)
beq PS.AddPtr1ToStrV.8 Ending \0
jsr PS.AddPtr1ToStrV
bra .1
*--------------------------------------
PS.AddYAToStrV >STYA ZPPtr1
PS.AddPtr1ToStrV
ldy #$ff
.2 iny
lda (ZPPtr1),y
sta (ZPPtr2),y
bne .2
jsr MEM.AddYp1ToPtr1
tya
sec
adc ZPPtr2
sta ZPPtr2
bcc PS.AddPtr1ToStrV.RTS
inc ZPPtr2+1
PS.AddPtr1ToStrV.8
clc
PS.AddPtr1ToStrV.RTS
rts
*--------------------------------------
PS.AddYAp12ArgSize
pha
tya
sec +1 for \0
adc PS.ArgSize
sta PS.ArgSize
pla
adc PS.ArgSize+1
sta PS.ArgSize+1
rts
*--------------------------------------
PS.SetMemOwner lda CORE.LastPSID
ldy #S.MEM.OWNERPID
sta (ZPMemMgrSPtr),y
rts
*/--------------------------------------
* # ExecL
* ## C
* `int kill(short int pid, short int sig);`
* ## ASM
* `>PUSHB sig`
* `lda pid`
* `>SYSCALL kill`
* ## RETURN VALUE
* A = Child PSID
*\--------------------------------------
K.Kill cmp #0
beq .99 CS
jsr CORE.GetPSByID
bcs .99
>STYA ZPPtr1
>PULLA
cmp #2
bcs .9
asl
tax
jmp (.1,x)
.1 .DA K.Kill.0
.DA K.Kill.1
.9 lda #E.SYN
* sec
rts
.99 >RET 1
*--------------------------------------
K.Kill.1 lda (ZPPtr1)
and #$33
ora #S.PS.F.QUIT
sta (ZPPtr1)
K.Kill.0
clc
rts
*--------------------------------------
MAN
SAVE USR/SRC/SYS/KERNEL.S.PS
LOAD USR/SRC/SYS/KERNEL.S
ASM