: continuation->rstack-list
drop pair-type cdr ;
+: stack-list-len ( stack-list -- n )
+ car drop
+;
+
: restore-param-stack ( continuation -- obj_stack )
continuation->pstack-list
2dup >R >R
2drop
;
+: list->pad ( list n -- )
+
+ pad + 1- \ final dest addr
+ pad \ initial dest addr
+ swap
+ do
+ 2dup cdr 2swap car
+ drop i !
+ -1 +loop
+
+ 2drop
+;
+
: restore-return-stack ( continuation -- )
- R> -rot \ store top of return stack on PS
continuation->rstack-list
- 2dup print 2dup
- \ TODO: Implement body of return stack restoration
+ 2dup stack-list-len -rot ( n stack-list )
+ 2dup cdr 2swap stack-list-len ( n list n )
+
+ list->pad ( n )
- >R \ restore original top of return stack
+ dup RSP0 + RSP! \ expand return stack to accommodate entries
+
+ ( n )
+ 0 \ initial offset
+ do
+ pad i + @ RSP0 i 1+ + !
+ loop
;
: restore-continuation ( continuation -- )
\ contents of continuation object.
2dup >R >R
+
restore-param-stack
- ." ====== PARAM STACK RESTORED ======" cr
- trace
-
R> R>
+
restore-return-stack
;