nil rsp@ 1- rsp0 do
i 1+ @ fixnum-type 2swap cons
loop
+
+ rsp@ 1- rsp0 - fixnum-type 2swap cons
;
: cons-param-stack ( -- listobj )
2swap cons
2 +loop
+
+ depth 2- 2/ fixnum-type 2swap cons
;
: make-continuation
: continuation->rstack-list
drop pair-type cdr ;
-: restore-param-stack ( continuation -- obj_stack continuation )
+: stack-list-len ( stack-list -- n )
+ car drop
+;
- 2dup >R >R
+: restore-param-stack ( continuation -- obj_stack )
continuation->pstack-list
+ 2dup >R >R
- ( Idea: allocate stack space first using psp!,
+ ( Allocate stack space first using psp!,
then copy objects from list. )
+
+ car drop 2*
+ object-stack-base @ psp0 + + psp!
+
+ R> R> 2dup cdr
+ 2swap
+ stack-list-len 1- 0 swap do
+
+ 2dup car
+ PSP0 object-stack-base @ + i 2* + 2 + !
+ PSP0 object-stack-base @ + i 2* + 1 + !
+ cdr
+
+ -1 +loop
+
+ 2drop
;
-: restore-continuation
+: restore-return-stack ( continuation -- )
+
+ continuation->rstack-list
+
+ 2dup cdr 2swap stack-list-len ( list n )
+
+ dup RSP0 + RSP! \ expand return stack to accommodate entries
+
+ ( list n )
+
+ 1- \ initial offset n-1
+ 0 \ final offset 0
+ swap
+ do
+ 2dup cdr 2swap car drop
+ RSP0 i 1+ + !
+ -1 +loop
+
+ 2drop
+;
+
+: restore-continuation ( continuation -- )
\ TODO: replace current parameter and return stacks with
\ contents of continuation object.
+
+ 2dup >R >R
+
+ restore-param-stack
+
+ R> R>
+
+ restore-return-stack
;
\ }}}
\ }}}
+\ DEBUGGING
+xxxx
+
\ ---- Loading files ---- {{{
: load ( addr n -- finalResult )