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l2/strconcat.sl
2026-01-08 15:28:10 +01:00

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import stdlib/stdlib.sl
import stdlib/io.sl
word strconcat
0 pick 3 pick +
dup
>r >r >r >r >r >r
5 rpick
alloc
r> r>
dup >r
strcpy
swap
r> dup -rot +
r> r>
strcpy
swap
3 pick
-
swap
drop
swap
0 rpick
nip
rot
drop
rdrop rdrop rdrop
end
word alloc
0 # addr hint (NULL)
swap # size
3 # prot (PROT_READ | PROT_WRITE)
34 # flags (MAP_PRIVATE | MAP_ANON)
-1 # fd
0 # offset
mmap
end
word free
munmap drop
end
word strcpy #(dst_addr src_addr len -- dst_addr len)
dup
>r
swap
dup c@
3 pick swap
c!
drop
swap
for
1 + dup
c@
swap
-rot
swap
1 +
dup
rot
c!
drop
swap
end
swap
nip
r> dup -rot - swap
end
word main
"hello world hello world hello " "world hello world hello world"
strconcat
puts
end