2swap cons
2 +loop
- depth 2- fixnum-type 2swap cons
+ depth 2- 2/ fixnum-type 2swap cons
;
: make-continuation
: 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
( Allocate stack space first using psp!,
then copy objects from list. )
- car drop
+ car drop 2*
object-stack-base @ psp0 + + psp!
R> R> 2dup cdr
2swap
- car drop 2- 0 swap do
+ car drop 1- 0 swap do
2dup car
- PSP0 object-stack-base @ + i + 2 + !
- PSP0 object-stack-base @ + i + 1 + !
+ PSP0 object-stack-base @ + i 2* + 2 + !
+ PSP0 object-stack-base @ + i 2* + 1 + !
cdr
- -2 +loop
+ -1 +loop
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> \ store top of return stack on PS
+
continuation->rstack-list
- 2dup >R >R
- ( Allocate stack space first using rsp!,
- then copy objects from list. )
+ 2dup stack-list-len -rot ( n stack-list )
+ 2dup cdr 2swap stack-list-len ( n list n )
- car drop
- rsp0 + rsp!
+ list->pad ( n )
- R> R> 2dup cdr
- 2swap
- car drop 0 swap do
- 2dup car drop
- rsp0 i + 1 + !
- cdr
- 1- +loop
+ dup RSP0 + RSP! \ expand return stack to accommodate entries
- 2drop
- trace
- >R \ restore original top of return stack
+ ( n )
+ 0 \ initial offset
+ do
+ pad i + @ RSP0 i 1+ + !
+ loop
;
: restore-continuation ( continuation -- )
\ contents of continuation object.
2dup >R >R
+
restore-param-stack
+
R> R>
+
restore-return-stack
;
\ }}}
+\ DEBUGGING
xxxx
\ ---- Loading files ---- {{{