tests/call-save.data

-- asm
mov %r6, 0x0001
mov %r7, 0x0020
mov %r8, 0x0300
mov %r9, 0x4000
call 2
mov %r0, 0
or %r0, %r6
or %r0, %r7
or %r0, %r8
or %r0, %r9
exit
-- result
0x4321
-- no register offset
call instruction