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A2osX/SBIN/TCPIP.S.txt

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Another Bunch of fixes
2015-03-14 21:48:35 +00:00
PR#3
Loader & KM modules implemented
2015-03-15 22:00:40 +00:00
PREFIX /A2OSX.BUILD
Another Bunch of fixes
2015-03-14 21:48:35 +00:00
NEW
INC 1
AUTO 6
.LIST OFF
.OP 65C02
.OR $2000
.TF SBIN/TCPIP
*--------------------------------------
.INB INC/MACROS.I
.INB INC/A2OSX.I
.INB INC/KERNEL.I
.INB INC/LIBTCPIP.I
*--------------------------------------
ZPFrameBase1 .EQ ZPBIN
ZPFrameLen1 .EQ ZPBIN+2
ZPFramePtr1 .EQ ZPBIN+4
ZPFrameBase2 .EQ ZPBIN+6
ZPFrameLen2 .EQ ZPBIN+8
ZPFramePtr2 .EQ ZPBIN+10
*--------------------------------------
* Main entry point
*--------------------------------------
* Code signature and INIT table
*--------------------------------------
* CLD $D8
* JMP (*,x) $7C
* #JMPTABLE
* /JMPTABLE
*--------------------------------------
CS.START cld
jmp (.1,x)
.1 .DA CS.INIT
.DA CS.RUN
.DA CS.DOEVENT
.DA CS.QUIT
L.LIBTCPIP .DA LIBTCPIP
L.CFGFILENAME .DA CFGFILENAME
L.IPCFG .DA IPCFG
.DA 0
.DA CS.END-CS.START Code Length To Relocate
.DA DS.END-DS.START Data Segment to Allocate
*--------------------------------------
CS.INIT >LIBLOADP L.LIBTCPIP
bcs .99
sta hLIBTCPIP
ldx #0
.1 stz IPCFG,x
inx
cpx #S.IPCFG
bne .1
jsr CS.INIT.DEV
bcs .99
* jsr CS.INIT.CFGFILE continue even if error opening CFG file
ldx #S.IPCFG.HOSTNAME
lda IPCFG,x
bne .3
ldy #0
.2 lda DefaultHostName,y
sta IPCFG,x
beq .3
inx
iny
bne .2
.3 >PUSHW L.IPCFG
>PUSHBI K.PROTOID.IP
>SYSCALL SYS.AddNetCfg
bcs .99
lda (pPsContext)
ora #S.PS.F.EVENT Now accept events
sta (pPsContext)
clc
.99 rts
*--------------------------------------
CS.INIT.DEV ldy #S.PS.hARGS
lda (pPsContext),y
>PUSHA
>PUSHBI $20 Push SEP=' '
>PUSHBI 1 Push 1 for getting DEV
>SYSCALL SYS.PStrGetTkn
bcs .99
sta hDEVNAME save DevName for discard
>SYSCALL SYS.GetDevByNameA
bcs .98
sta hDev
ldx #S.IPCFG.HDEV
sta IPCFG,x
>SYSCALL SYS.GetDevInfoA
>STYA ZPQuickPtr1
ldy #0
ldx #S.IPCFG.MAC
.1 lda (ZPQuickPtr1),y
sta IPCFG,x
inx
iny
cpy #S.IPCFG.MAC+6
bne .1
lda hDEVNAME
>SYSCALL SYS.FreeMemA
clc
rts
.98 pha
lda hDEVNAME
>SYSCALL SYS.FreeMemA
pla
.99 rts
*--------------------------------------
CS.INIT.CFGFILE >PUSHW L.CFGFILENAME
>SYSCALL SYS.ExpandPStr
bcs .99
sta hCfgFileName
>SYSCALL SYS.LoadFileA
bcs .98
stx hCfgFile
>STYA hCfgFileLen
txa
>SYSCALL SYS.GetMemPtrA
>STYA ZPQuickPtr1
.89 lda hCfgFile
>SYSCALL SYS.FreeMemA
lda hCfgFileName
>SYSCALL SYS.FreeMemA
clc
rts
.98 pha
lda hCfgFileName
>SYSCALL SYS.FreeMemA
pla
.99 sec
rts
*--------------------------------------
CS.RUN clc
rts
*--------------------------------------
CS.DOEVENT >PULLW pEvent
lda (pEvent)
and #S.EVT.F.NET
beq .9
ldy #S.EVT.hDEV
lda (pEvent),y
cmp hDev
beq CS.DOEVENT.NET
.9 sec
rts
CS.DOEVENT.NET ldy #S.EVT.DATALO Get Frame hMem
lda (pEvent),y
>SYSCALL SYS.GetMemPtrA
>STYA ZPFrameBase1
ldy #S.EVT.DATAW1 Get Frame Len
lda (pEvent),y
sta ZPFrameLen1
iny
lda (pEvent),y
sta ZPFrameLen1+1
ldy #S.ETH.ETHERTYPE
lda (ZPFrameBase1),y
tax
iny
lda (ZPFrameBase1),y
cmp #S.ETH.ETHERTYPE.ARP
bne .1
cpx /S.ETH.ETHERTYPE.ARP
bne .1
jsr ARPListener
bcc .89
rts
.1 cmp #S.ETH.ETHERTYPE.IP
bne .99
cpx /S.ETH.ETHERTYPE.IP
bne .99
ldy #S.IP.PROTOCOL
lda (ZPFrameBase1),y
cmp #S.IP.PROTOCOL.ICMP
bne .2
jsr ICMPListener
bcc .89
rts
.2 cmp #S.IP.PROTOCOL.UDP
bne .3
>PUSHW ZPFrameLen1
>PUSHW ZPFrameBase1
>LIBCALL hLIBTCPIP,LIBTCPIP.UDP.LISTENER
bcc .89
rts
.3 cmp #S.IP.PROTOCOL.TCP
bne .99
>PUSHW ZPFrameLen1
>PUSHW ZPFrameBase1
>LIBCALL hLIBTCPIP,LIBTCPIP.TCP.LISTENER
bcc .89
rts
.89 >SYSCALL SYS.DestroyEvent
clc
rts
.99 sec
rts
*--------------------------------------
CS.QUIT lda hLIBTCPIP
>SYSCALL SYS.FreeMemA
clc
rts
*--------------------------------------
* PRIVATE
*--------------------------------------
ARPListener jsr GetIPCFG
ldy #S.ARP.TPA
ldx #S.IPCFG.IP
.1 lda (ZPFrameBase1),y
cmp IPCFG,x
bne .9
iny
inx
cpx #S.IPCFG.IP+4
bne .1
ldy #S.ARP.OPERATION+1 HI byte
lda (ZPFrameBase1),y
cmp #S.ARP.OPERATION.REQ
beq ARPListener.REQ
cmp #S.ARP.OPERATION.REP
beq ARPListener.REP
.9 clc Discard any other ARP frames
rts
ARPListener.REP >LDAXI S.ARP.SHA
jsr SetFramePtr1AX
>PUSHW ZPFramePtr1
>LDAXI S.ARP.SPA
jsr SetFramePtr1AX
>PUSHW ZPFramePtr1
>LIBCALL hLIBTCPIP,LIBTCPIP.ARP.ADD
clc
ARPListener.RTS rts
ARPListener.REQ >LIBCALL hLIBTCPIP,LIBTCPIP.NEW.ARP.FRAME
bcs ARPListener.RTS
phx
>STYA ZPFrameBase2
ldy #S.ARP.OPERATION+1
lda #S.ARP.OPERATION.REP
sta (ZPFrameBase2),y
>LDAXI S.ARP.SHA
jsr SetFramePtr1AX
>LDAXI S.ETH.DSTMAC
jsr SetFramePtr2AX
ldy #6
jsr CopyFramePtr12
>LDAXI S.ARP.THA
jsr SetFramePtr2AX
ldy #10 IP(4) + MAC(6)
jsr CopyFramePtr12
>PUSHW ZPFramePtr1 still point to SHA
>LDAXI S.ARP.SPA
jsr SetFramePtr1AX
>PUSHW ZPFramePtr1
>LIBCALL hLIBTCPIP,LIBTCPIP.ARP.ADD
ldx #5
ldy #S.ARP.SHA+5
.4 lda IPCFG+S.IPCFG.MAC,x
sta (ZPFrameBase2),y
dey
dex
bpl .4
ldx #3
ldy #S.ARP.SPA+3
.5 lda IPCFG+S.IPCFG.IP,x
sta (ZPFrameBase2),y
dey
dex
bpl .5
>PUSHW ZPFrameBase2
>LIBCALL hLIBTCPIP,LIBTCPIP.SEND.ARP.FRAME
pla
>SYSCALL SYS.FreeMemA
clc
rts
*--------------------------------------
ICMPListener ldy #S.ICMP.TYPE
lda (ZPFrameBase1),y
cmp #S.ICMP.TYPE.ECHOREQ
bne .9
jsr GetIPCFG
ldy #S.IP.DST
ldx #S.IPCFG.IP
.10 lda (ZPFrameBase1),y
cmp IPCFG,x
bne .9
iny
inx
cpx #S.IPCFG.IP+4
bne .10
>LIBCALL hLIBTCPIP,LIBTCPIP.NEW.ICMP.FRAME
bcs .9
phx
>STYA ZPFrameBase2
ldy #S.ICMP.TYPE
lda #S.ICMP.TYPE.ECHOREP
sta (ZPFrameBase2),y
jsr MakeIPReply
ldy #S.ICMP.IDENTIFIER
.1 lda (ZPFrameBase1),y
sta (ZPFrameBase2),y
iny
cpy #ZPFrameLen1
bne .1
>PUSHW ZPFrameLen1
>PUSHW ZPFrameBase2
>LIBCALL hLIBTCPIP,LIBTCPIP.SEND.ICMP.FRAME
pla
>SYSCALL SYS.FreeMemA
clc
rts
.9 sec
rts
*--------------------------------------
GetIPCFG >LIBCALL hLIBTCPIP,LIBTCPIP.GET.IPCFG
>STYA ZPQuickPtr1
ldy #S.IPCFG
.1 dey
lda (ZPQuickPtr1),y
sta IPCFG,y
tya
bne .1
rts
*--------------------------------------
MakeIPReply >LDAXI S.IP.SRC
jsr SetFramePtr1AX
>LDAXI S.IP.DST
jsr SetFramePtr2AX
ldy #4
jsr CopyFramePtr12
>LDAXI S.IP.DST
jsr SetFramePtr1AX
>LDAXI S.IP.SRC
jsr SetFramePtr2AX
ldy #4
jsr CopyFramePtr12
>LDAXI S.ETH.SRCMAC
jsr SetFramePtr1AX
>LDAXI S.ETH.DSTMAC
jsr SetFramePtr2AX
ldy #6
jsr CopyFramePtr12
rts
*--------------------------------------
* A,X = Frame PTR
*--------------------------------------
SetFramePtr1AX clc
adc ZPFrameBase1
sta ZPFramePtr1
txa
adc ZPFrameBase1+1
sta ZPFramePtr1+1
rts
*--------------------------------------
* A,X = Frame PTR
*--------------------------------------
SetFramePtr2AX clc
adc ZPFrameBase2
sta ZPFramePtr2
txa
adc ZPFrameBase2+1
sta ZPFramePtr2+1
rts
*--------------------------------------
* Y = bytes to copy from ZPFramePtr1 to ZPFramePtr2
*--------------------------------------
CopyFramePtr12 dey
lda (ZPFramePtr1),y
sta (ZPFramePtr2),y
tya
bne CopyFramePtr12
rts
*--------------------------------------
CS.END
*--------------------------------------
LIBTCPIP >PSTRING "libtcpip.o"
CFGFILENAME >PSTRING "%ETC%TCPIP.CONF"
DefaultHostName >CSTRING "a2osx-host"
*--------------------------------------
DS.START
*--------------------------------------
hLIBTCPIP .BS 1
hDEVNAME .BS 1
hDev .BS 1
hCfgFileName .BS 1
hCfgFile .BS 1
hCfgFileLen .BS 2
IPCFG .BS S.IPCFG Get in cache for faster access with ,X
*--------------------------------------
DS.END
*--------------------------------------
MAN
SAVE SBIN/TCPIP.S
ASM
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