lang-bootstrap/02/in02

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2021-11-09 20:27:03 -05:00
jm
2021-11-09 20:53:55 -05:00
:-co jump to code
::hw
'H
'e
'l
'l
'o
',
'
'w
'o
'r
'l
'd
'!
\n
::he end of hello world
::co start of code
//
// now we'll calculate the length of the hello world string
// by subtracting hw from he.
//
im
--he
BA
im
--hw
nA
+B
DA put length in rdx
// okay now we can write it
im
##1.
JA set rdi to 1 (stdout)
im
--hw
IA set rsi to a pointer to "Hello, world!\n"
im
##1. write
sy
im
##0. exit code 0
JA
im
##3c. exit = syscall 0x3c
sy