84 lines
1.2 KiB
ArmAsm
84 lines
1.2 KiB
ArmAsm
.include "../inc/common.inc"
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.export _udp_add_listener
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.export _udp_remove_listener
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.export _udp_recv_buf
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.export _udp_recv_len
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.export _udp_recv_src
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.export _udp_recv_src_port
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.export _udp_send
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.import udp_add_listener
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.import udp_remove_listener
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.import ip_inp
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.import udp_inp
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.import udp_send
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.import udp_callback
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.importzp ip_src
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.importzp udp_src_port
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.importzp udp_len
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.importzp udp_data
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.import udp_send_len
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.import udp_send_dest
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.import udp_send_dest_port
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.import udp_send_src_port
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.import popax, popeax
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.importzp sreg
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_udp_add_listener:
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stax udp_callback
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jsr popax
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jsr udp_add_listener
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ldx #$00
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txa
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rol
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rts
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_udp_remove_listener:
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jsr udp_remove_listener
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ldx #$00
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txa
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rol
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rts
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_udp_recv_buf := udp_inp+udp_data
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_udp_recv_len:
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lda udp_inp+udp_len+1
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ldx udp_inp+udp_len
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sec
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sbc #udp_data
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bcs :+
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dex
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: rts
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_udp_recv_src:
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ldax ip_inp+ip_src+2
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stax sreg
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ldax ip_inp+ip_src
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rts
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_udp_recv_src_port:
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lda udp_inp+udp_src_port+1
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ldx udp_inp+udp_src_port
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rts
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_udp_send:
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stax udp_send_src_port
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jsr popax
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stax udp_send_dest_port
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jsr popeax
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stax udp_send_dest
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ldax sreg
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stax udp_send_dest+2
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jsr popax
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stax udp_send_len
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jsr popax
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jsr udp_send
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ldx #$00
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txa
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rol
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rts
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