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.ifndef _listops_s_file
_listops_s_file:
.include "include/primops.s"
# | n | list | -> cont
.primop2 list_int_index
needs_alloc $060
mov 010(%rsi), %rdx # the list constructor id, must be 1
cmp $1, %rdx
jne list_int_index_not_found
mov 020(%rbp), %rcx
mov 010(%rcx), %rcx
test %rcx, %rcx
jz list_int_index_found # we are taking the head, all happy, return it
# more likely, we need to continue -- make new args thunks
sub $1, %rcx
thunkto %r11, $INT_code, %rcx # decreased index
thunkto %r11, $list_int_index, $2, %r11, 030(%rsi) # new call on tail
primop2_cont_indirect %r11
list_int_index_found:
mov 020(%rsi), %rax #head
primop2_cont_indirect %rax
list_int_index_not_found:
movq 0, %rax #fault (TODO: we should have a better fault)
.endif # _listops_s_file
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