2021-11-13 17:24:45 -05:00
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B=:hello_world
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call :puts
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2021-11-14 00:33:40 -05:00
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; exit code 0
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2021-11-13 17:24:45 -05:00
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J=d0
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2021-11-12 22:00:46 -05:00
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syscall x3c
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2021-11-13 13:00:35 -05:00
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2021-11-13 13:48:27 -05:00
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:hello_world
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2021-11-13 13:56:26 -05:00
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str Hello, world!
|
2021-11-13 13:48:27 -05:00
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xa
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2021-11-13 17:24:45 -05:00
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x0
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; output null-terminated string in rbx
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:puts
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2021-11-14 00:33:40 -05:00
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R=B
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2021-11-13 17:24:45 -05:00
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call :strlen
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D=A
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2021-11-14 00:33:40 -05:00
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I=R
|
2021-11-13 17:24:45 -05:00
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|
J=d1
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syscall d1
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|
return
|
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|
|
; calculate length of string in rbx
|
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|
:strlen
|
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|
; keep pointer to start of string
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D=B
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I=B
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|
:strlen_loop
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|
C=1I
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|
?C=0:strlen_loop_end
|
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|
I+=d1
|
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|
!:strlen_loop
|
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|
:strlen_loop_end
|
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|
I-=D
|
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|
A=I
|
|
|
|
|
return
|
