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; debug routines
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|
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; print a string to the serial port
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; inputs:
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; r0: pointer to null-terminated string
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|
; outputs:
|
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; none
|
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debug_print:
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push r0
|
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push r1
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debug_print_loop:
|
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mov r1, 0x00000000
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out r1, [r0]
|
|
inc r0
|
|
cmp.8 [r0], 0x00
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|
ifnz jmp debug_print_loop
|
|
pop r1
|
|
pop r0
|
|
ret
|