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https://github.com/bobbimanners/emailler.git
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149 lines
2.5 KiB
ArmAsm
149 lines
2.5 KiB
ArmAsm
;routines for dumping debug information
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.include "../inc/common.i"
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.include "../inc/printf.i"
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.export dbgout16
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.export dbg_dump_eth_header
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.export dbg_dump_ip_header
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.export dbg_dump_udp_header
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.export console_out
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.export console_strout
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.import eth_outp, eth_outp_len
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.import ip_outp
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.import udp_outp
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.segment "IP65ZP" : zeropage
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cptr: .res 2
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.code
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;prints out the header of ethernet packet that is ready to be sent;
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; inputs:
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; eth_outp: pointer to ethernet packet
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; eth_outp_len: length of ethernet packet
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; outputs: none
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dbg_dump_eth_header:
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pha
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txa
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pha
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tya
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pha
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printf "\rethernet header:\r"
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printf "len: %04x\r", eth_outp_len
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printf "dest: %04x:%04x:%04x\r", eth_outp, eth_outp + 2, eth_outp + 4
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printf "src: %04x:%04x:%04x\r", eth_outp + 6, eth_outp + 8, eth_outp + 10
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printf "type: %04x\r", eth_outp + 12
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pla
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tay
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pla
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tax
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pla
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rts
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;prints out the header of ip packet that is ready to be sent;
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; inputs:
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; eth_outp: pointer to ethernet packet containing an ip packet
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; eth_outp_len: length of ethernet packet
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; outputs: none
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dbg_dump_ip_header:
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pha
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txa
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pha
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tya
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pha
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printf "\rip header:\r"
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printf "ver,ihl,tos: %04x\r", ip_outp
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printf "len: %04x\r", ip_outp + 2
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printf "id: %04x\r", ip_outp + 4
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printf "frag: %04x\r", ip_outp + 6
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printf "ttl: %02x\r", ip_outp + 8
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printf "proto: %02x\r", ip_outp + 9
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printf "cksum: %04x\r", ip_outp + 10
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printf "src: %04x%04x\r", ip_outp + 12, ip_outp + 14
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printf "dest: %04x%04x\r", ip_outp + 16, ip_outp + 18
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pla
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tay
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pla
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tax
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pla
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rts
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;prints out the header of udp packet that is ready to be sent;
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; inputs:
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; eth_outp: pointer to ethernet packet containing a udp packet
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; eth_outp_len: length of ethernet packet
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; outputs: none
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dbg_dump_udp_header:
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pha
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txa
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pha
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tya
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pha
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printf "\rudp header:\r"
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printf "srcport: %04x\r", ip_outp
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printf "destport: %04x\r", ip_outp + 2
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printf "len: %04x\r", ip_outp + 4
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printf "cksum: %04x\r", ip_outp + 6
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pla
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tay
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pla
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tax
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pla
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rts
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console_out = $ffd2
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;print a string to the console
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;inputs: AX = address of (null terminated) string to print
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;outputs: none
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console_strout:
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stax cptr
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pha
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txa
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pha
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tya
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pha
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ldy #0
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: lda (cptr),y
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beq @done
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jsr console_out
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iny
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bne :-
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@done:
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pla
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tay
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pla
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tax
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pla
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rts
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;print a 32 bit number as 4 hex digits
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;inputs: AX = 32 bit number to print
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;outputs: none
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dbgout16:
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stax val16
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printf "%04x", val16
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rts
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.bss
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val16: .res 2
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