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Black Box 4
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progasm
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sprcbnch.arj
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ARGV.S
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1992-01-28
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787b
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58 lines
!
! echo command line arguments
!
add %sp,64,%l0
ld [%l0],%l1 ! argc
inc 4,%l0
L1:
call print_string
ld [%l0],%o0
deccc %l1
bg L1
inc 4,%l0
ld [%sp+64],%o0 ! exit with status = argc
mov 1,%g1
ta 0
nop
.seg "data"
cr:
.ascii "\n"
.seg "text"
!
! write string pointed to by %o0 to stdout,
! followed by newline
!
print_string:
save %sp,-96,%sp
call strlen
mov %i0,%o0
mov %o0,%o2 ! length count
mov 1,%o0 ! write to stdout
mov %i0,%o1 ! buffer
mov 4,%g1
ta 0
mov 1,%o0 ! now write newline
set cr,%o1
mov 1,%o2 ! 1 byte
ta 0
ret
restore
!
! determine length of string pointed to by %o0
!
strlen:
mov %o0,%l3
clr %o0
L2:
ldub [%l3],%l4
inc %l3
tst %l4
bne,a L2
inc %o0
retl
nop