File : ip65/debug.s

routines for dumping debug information

functions

print a string to the console
inputs: AX = address of (null terminated) string to print
outputs: none

prints out the header  of ethernet packet that is ready to be sent;
 inputs: 
 eth_outp: pointer to ethernet packet
 eth_outp_len: length of ethernet packet
 outputs: none

prints out the header  of ip packet that is ready to be sent;
 inputs: 
 eth_outp: pointer to ethernet packet containing an ip packet
 eth_outp_len: length of ethernet packet
 outputs: none

prints out the header  of udp packet that is ready to be sent;
 inputs: 
 eth_outp: pointer to ethernet packet containing a udp packet
 eth_outp_len: length of ethernet packet
 outputs: none

print a 32 bit number as 4 hex digits
inputs: AX = 32 bit number to print
outputs: none

constants

implementation

;routines for dumping debug information

.include "../inc/common.i"
.include "../inc/printf.i"


  .export dbgout16
  .export dbg_dump_eth_header
  .export dbg_dump_ip_header
  .export dbg_dump_udp_header

  .export console_out
  .export console_strout


  .import eth_outp, eth_outp_len
  .import ip_outp
  .import udp_outp


  .segment "IP65ZP" : zeropage

cptr:  .res 2


  .code


;prints out the header  of ethernet packet that is ready to be sent;
; inputs: 
; eth_outp: pointer to ethernet packet
; eth_outp_len: length of ethernet packet
; outputs: none
dbg_dump_eth_header:
  pha
  txa
  pha
  tya
  pha

  printf "\rethernet header:\r"
  printf "len: %04x\r", eth_outp_len
  printf "dest: %04x:%04x:%04x\r", eth_outp, eth_outp + 2, eth_outp + 4
  printf "src: %04x:%04x:%04x\r", eth_outp + 6, eth_outp + 8, eth_outp + 10
  printf "type: %04x\r", eth_outp + 12

  pla
  tay
  pla
  tax
  pla
  rts

;prints out the header  of ip packet that is ready to be sent;
; inputs: 
; eth_outp: pointer to ethernet packet containing an ip packet
; eth_outp_len: length of ethernet packet
; outputs: none
dbg_dump_ip_header:
  pha
  txa
  pha
  tya
  pha

  printf "\rip header:\r"
  printf "ver,ihl,tos: %04x\r", ip_outp
  printf "len: %04x\r", ip_outp + 2
  printf "id: %04x\r", ip_outp + 4
  printf "frag: %04x\r", ip_outp + 6
  printf "ttl: %02x\r", ip_outp + 8
  printf "proto: %02x\r", ip_outp + 9
  printf "cksum: %04x\r", ip_outp + 10
  printf "src: %04x%04x\r", ip_outp + 12, ip_outp + 14
  printf "dest: %04x%04x\r", ip_outp + 16, ip_outp + 18

  pla
  tay
  pla
  tax
  pla
  rts

;prints out the header  of udp packet that is ready to be sent;
; inputs: 
; eth_outp: pointer to ethernet packet containing a udp packet
; eth_outp_len: length of ethernet packet
; outputs: none
dbg_dump_udp_header:
  pha
  txa
  pha
  tya
  pha

  printf "\rudp header:\r"
  printf "srcport: %04x\r", ip_outp
  printf "destport: %04x\r", ip_outp + 2
  printf "len: %04x\r", ip_outp + 4
  printf "cksum: %04x\r", ip_outp + 6

  pla
  tay
  pla
  tax
  pla
  rts


console_out  = $ffd2

;print a string to the console
;inputs: AX = address of (null terminated) string to print
;outputs: none
console_strout:
  stax cptr

  pha
  txa
  pha
  tya
  pha
  ldy #0
:  lda (cptr),y
  beq @done
  jsr console_out
  iny
  bne :-
@done:
  pla
  tay
  pla
  tax
  pla
  rts

;print a 32 bit number as 4 hex digits
;inputs: AX = 32 bit number to print
;outputs: none
dbgout16:
  stax val16  
  printf "%04x", val16
  rts


  .bss

val16:  .res 2



;-- LICENSE FOR debug.s --
; The contents of this file are subject to the Mozilla Public License
; Version 1.1 (the "License"); you may not use this file except in
; compliance with the License. You may obtain a copy of the License at
; http://www.mozilla.org/MPL/
; 
; Software distributed under the License is distributed on an "AS IS"
; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
; License for the specific language governing rights and limitations
; under the License.
; 
; The Original Code is ip65.
; 
; The Initial Developer of the Original Code is Per Olofsson,
; MagerValp@gmail.com.
; Portions created by the Initial Developer are Copyright (C) 2009
; Per Olofsson. All Rights Reserved.  
; -- LICENSE END --