--- gforth/prims2x.fs	2001/03/11 21:47:27	1.90
+++ gforth/prims2x.fs	2001/10/26 12:00:15	1.99
@@ -41,7 +41,6 @@
 \ regarding problem 1 above: It would be better (for over) to implement
 \ 	the alternative
 \ store optimization for combined instructions.
-\ eliminate stack-cast (no longer used)
 
 \ Design Uglyness:
 
@@ -54,21 +53,14 @@
 
 warnings off
 
-[IFUNDEF] vocabulary	\ we are executed just with kernel image
-			\ load the rest that is needed
-			\ (require fails because this file is needed from a
-			\ different directory with the wordlibraries)
-include ./search.fs			
-include ./extend.fs
-include ./stuff.fs
-[THEN]
-
-[IFUNDEF] environment?
-include ./environ.fs
+[IFUNDEF] try
+include startup.fs
 [THEN]
 
 : struct% struct ; \ struct is redefined in gray
 
+warnings off
+
 include ./gray.fs
 
 32 constant max-effect \ number of things on one side of a stack effect
@@ -142,7 +134,6 @@ struct%
     cell%    field stack-number \ the number of this stack
     cell% 2* field stack-pointer \ stackpointer name
     cell%    field stack-type \ name for default type of stack items
-    cell% 2* field stack-cast \ cast string for assignments to stack elements
     cell%    field stack-in-index-xt \ ( in-size item -- in-index )
 end-struct stack%
 
@@ -171,15 +162,22 @@ create stacks max-stacks cells allot \ a
 : inst-in-index ( in-size item -- in-index )
     nip dup item-offset @ swap item-type @ type-size @ + 1- ;
 
-: make-stack ( addr-ptr u1 type addr-cast u2 "stack-name" -- )
+: make-stack ( addr-ptr u1 type "stack-name" -- )
+    next-stack-number @ max-stacks < s" too many stacks" ?print-error
     create stack% %allot >r
     r@ stacks next-stack-number @ th !
-    next-stack-number @ r@ stack-number !  1 next-stack-number +!
-    save-mem r@ stack-cast 2!
+    next-stack-number @ r@ stack-number !
+    1 next-stack-number +!
     r@ stack-type !
     save-mem r@ stack-pointer 2! 
     ['] stack-in-index r> stack-in-index-xt ! ;
 
+: map-stacks { xt -- }
+    \ perform xt for all stacks except inst-stream
+    next-stack-number @ 1 +do
+	stacks i th @ xt execute
+    loop ;
+
 \ stack items
 
 : init-item ( addr u addr1 -- )
@@ -426,7 +424,8 @@ wordlist constant prefixes
     rdrop ;
 
 : type-prefix ( xt1 xt2 n stack "prefix" -- )
-    create-type
+    get-current >r prefixes set-current
+    create-type r> set-current
 does> ( item -- )
     \ initialize item
     { item typ }
@@ -476,7 +475,9 @@ does> ( item -- )
     prim prim-effect-out prim prim-effect-out-end @ ['] print-declaration map-items ;
     
 : stack-prefix ( stack "prefix" -- )
+    get-current >r prefixes set-current
     name tuck nextname create ( stack length ) 2,
+    r> set-current
 does> ( item -- )
     2@ { item stack prefix-length }
     item item-name 2@ prefix-length /string item item-name 2!
@@ -485,13 +486,23 @@ does> ( item -- )
 
 \ types pointed to by stacks for use in combined prims
 \ !! output-c-combined shouldn't use these names!
-s" Cell"  single 0 create-type w
-s" Float" single 0 create-type r
+: stack-type-name ( addr u "name" -- )
+    single 0 create-type ;
+
+wordlist constant type-names \ this is here just to meet the requirement
+                    \ that a type be a word; it is never used for lookup
+
+: stack ( "name" "stack-pointer" "type" -- )
+    \ define stack
+    name { d: stack-name }
+    name { d: stack-pointer }
+    name { d: stack-type }
+    get-current type-names set-current
+    stack-type 2dup nextname stack-type-name
+    set-current
+    stack-pointer lastxt >body stack-name nextname make-stack ;
 
-s" sp" save-mem w s" (Cell)" make-stack data-stack 
-s" fp" save-mem r s" "       make-stack fp-stack
-s" rp" save-mem w s" (Cell)" make-stack return-stack
-s" IP" save-mem w s" error don't use # on results" make-stack inst-stream
+stack inst-stream IP Cell
 ' inst-in-index inst-stream stack-in-index-xt !
 ' inst-stream <is> inst-stream-f
 \ !! initialize stack-in and stack-out
@@ -516,7 +527,7 @@ s" IP" save-mem w s" error don't use # o
     dup stack-in off stack-out off ;
 
 : compute-offsets ( -- )
-    data-stack clear-stack  fp-stack clear-stack return-stack clear-stack
+    ['] clear-stack map-stacks
     inst-stream clear-stack
     prim prim-effect-in  prim prim-effect-in-end  @ ['] compute-offset-in  map-items
     prim prim-effect-out prim prim-effect-out-end @ ['] compute-offset-out map-items
@@ -536,9 +547,7 @@ s" IP" save-mem w s" error don't use # o
     endif ;
 
 : flush-tos ( -- )
-    data-stack   flush-a-tos
-    fp-stack     flush-a-tos
-    return-stack flush-a-tos ;
+    ['] flush-a-tos map-stacks ;
 
 : fill-a-tos { stack -- }
     stack stack-out @ 0= stack stack-in @ 0<> and
@@ -549,9 +558,7 @@ s" IP" save-mem w s" error don't use # o
 
 : fill-tos ( -- )
     \ !! inst-stream for prefetching?
-    fp-stack     fill-a-tos
-    data-stack   fill-a-tos
-    return-stack fill-a-tos ;
+    ['] fill-a-tos map-stacks ;
 
 : fetch ( addr -- )
     dup item-type @ type-fetch @ execute ;
@@ -573,9 +580,7 @@ s" IP" save-mem w s" error don't use # o
 
 : stack-pointer-updates ( -- )
     inst-pointer-update
-    data-stack   stack-pointer-update
-    fp-stack     stack-pointer-update
-    return-stack stack-pointer-update ;
+    ['] stack-pointer-update map-stacks ;
 
 : store ( item -- )
 \ f is true if the item should be stored
@@ -585,6 +590,34 @@ s" IP" save-mem w s" error don't use # o
 : stores ( -- )
     prim prim-effect-out prim prim-effect-out-end @ ['] store map-items ;
 
+: print-debug-arg { item -- }
+    ." fputs(" quote space item item-name 2@ type ." =" quote ." , vm_out); "
+    ." printarg_" item item-type @ print-type-prefix
+    ." (" item item-name 2@ type ." );" cr ;
+    
+: print-debug-args ( -- )
+    ." #ifdef VM_DEBUG" cr
+    ." if (vm_debug) {" cr
+    prim prim-effect-in prim prim-effect-in-end @ ['] print-debug-arg map-items
+\    ." fputc('\n', vm_out);" cr
+    ." }" cr
+    ." #endif" cr ;
+
+: print-debug-result { item -- }
+    item item-first @ if
+	item print-debug-arg
+    endif ;
+
+: print-debug-results ( -- )
+    cr
+    ." #ifdef VM_DEBUG" cr
+    ." if (vm_debug) {" cr
+    ." fputs(" quote ."  -- " quote ." , vm_out); "
+    prim prim-effect-out prim prim-effect-out-end @ ['] print-debug-result map-items
+    ." fputc('\n', vm_out);" cr
+    ." }" cr
+    ." #endif" cr ;
+
 : output-super-end ( -- )
     prim prim-c-code 2@ s" SET_IP" search if
 	." SUPER_END;" cr
@@ -594,6 +627,7 @@ s" IP" save-mem w s" error don't use # o
 : output-c-tail ( -- )
     \ the final part of the generated C code
     output-super-end
+    print-debug-results
     ." NEXT_P1;" cr
     stores
     fill-tos
@@ -612,21 +646,8 @@ s" IP" save-mem w s" error don't use # o
     repeat
     2drop type ;
 
-: print-debug-arg { item -- }
-    ." fputs(" quote space item item-name 2@ type ." =" quote ." , vm_out); "
-    ." printarg_" item item-type @ print-type-prefix
-    ." (" item item-name 2@ type ." );" cr ;
-    
-: print-debug-args ( -- )
-    ." #ifdef VM_DEBUG" cr
-    ." if (vm_debug) {" cr
-    prim prim-effect-in prim prim-effect-in-end @ ['] print-debug-arg map-items
-    ." fputc('\n', vm_out);" cr
-    ." }" cr
-    ." #endif" cr ;
-
 : print-entry ( -- )
-    ." I_" prim prim-c-name 2@ type ." :" ;
+    ." CASE I_" prim prim-c-name 2@ type ." :" ;
     
 : output-c ( -- ) 
  print-entry ."  /* " prim prim-name 2@ type ."  ( " prim prim-stack-string 2@ type ." ) */" cr
@@ -666,7 +687,8 @@ s" IP" save-mem w s" error don't use # o
     ."   fputs(" quote prim prim-name 2@ type quote ." , vm_out);" cr
     disasm-args
     ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
-    ." } else " ;
+    ."   goto _endif_;" cr
+    ." }" cr ;
 
 : output-profile ( -- )
     \ generate code for postprocessing the VM block profile stuff
@@ -676,8 +698,10 @@ s" IP" save-mem w s" error don't use # o
     prim prim-c-code 2@  s" SET_IP"    search nip nip
     prim prim-c-code 2@  s" SUPER_END" search nip nip or if
 	."   return;" cr
+    else
+	."   goto _endif_;" cr
     endif
-    ." } else " cr ;
+    ." }" cr ;
 
 : gen-arg-parm { item -- }
     item item-stack @ inst-stream = if
@@ -714,32 +738,33 @@ s" IP" save-mem w s" error don't use # o
 : output-forthname ( -- )
   '" emit prim prim-name 2@ type '" emit ." ," cr ;
 
-: output-c-func ( -- )
-\ used for word libraries
-    ." Cell * I_" prim prim-c-name 2@ type ." (Cell *SP, Cell **FP)      /* " prim prim-name 2@ type
-    ."  ( " prim prim-stack-string 2@ type ."  ) */" cr
-    ." /* " prim prim-doc 2@ type ."  */" cr
-    ." NAME(" quote prim prim-name 2@ type quote ." )" cr
-    \ debugging
-    ." {" cr
-    print-declarations
-    inst-stream  stack-used? IF ." Cell *ip=IP;" cr THEN
-    data-stack   stack-used? IF ." Cell *sp=SP;" cr THEN
-    fp-stack     stack-used? IF ." Cell *fp=*FP;" cr THEN
-    return-stack stack-used? IF ." Cell *rp=*RP;" cr THEN
-    flush-tos
-    fetches
-    stack-pointer-updates
-    fp-stack   stack-used? IF ." *FP=fp;" cr THEN
-    ." {" cr
-    ." #line " c-line @ . quote c-filename 2@ type quote cr
-    prim prim-c-code 2@ type
-    ." }" cr
-    stores
-    fill-tos
-    ." return (sp);" cr
-    ." }" cr
-    cr ;
+\  : output-c-func ( -- )
+\  \ used for word libraries
+\      ." Cell * I_" prim prim-c-name 2@ type ." (Cell *SP, Cell **FP)      /* " prim prim-name 2@ type
+\      ."  ( " prim prim-stack-string 2@ type ."  ) */" cr
+\      ." /* " prim prim-doc 2@ type ."  */" cr
+\      ." NAME(" quote prim prim-name 2@ type quote ." )" cr
+\      \ debugging
+\      ." {" cr
+\      print-declarations
+\      \ !! don't know what to do about that
+\      inst-stream  stack-used? IF ." Cell *ip=IP;" cr THEN
+\      data-stack   stack-used? IF ." Cell *sp=SP;" cr THEN
+\      fp-stack     stack-used? IF ." Cell *fp=*FP;" cr THEN
+\      return-stack stack-used? IF ." Cell *rp=*RP;" cr THEN
+\      flush-tos
+\      fetches
+\      stack-pointer-updates
+\      fp-stack   stack-used? IF ." *FP=fp;" cr THEN
+\      ." {" cr
+\      ." #line " c-line @ . quote c-filename 2@ type quote cr
+\      prim prim-c-code 2@ type
+\      ." }" cr
+\      stores
+\      fill-tos
+\      ." return (sp);" cr
+\      ." }" cr
+\      cr ;
 
 : output-label ( -- )  
     ." (Label)&&I_" prim prim-c-name 2@ type ." ," cr ;
@@ -943,6 +968,7 @@ s" IP" save-mem w s" error don't use # o
     fetches ;
 
 : part-output-c-tail ( -- )
+    print-debug-results
     stores ;
 
 : output-combined-tail ( -- )
@@ -1150,7 +1176,13 @@ Variable c-flag
 	THEN }}
 )) <- if-comment
 
-(( (( eval-comment || forth-comment || c-comment || else-comment || if-comment )) ?? nonl ** )) <- comment-body
+(( (( ` g || ` G )) {{ start }} nonl **
+   {{ end
+      forth-flag @ IF  ." group " type cr  THEN
+      c-flag @     IF  ." GROUP(" type ." )" cr  THEN }}
+)) <- group-comment
+
+(( (( eval-comment || forth-comment || c-comment || else-comment || if-comment || group-comment )) ?? nonl ** )) <- comment-body
 
 (( ` \ comment-body nleof )) <- comment ( -- )
 
@@ -1193,6 +1225,18 @@ warnings @ [IF]
 .( parser generated ok ) cr
 [THEN]
 
+
+\ run with gforth-0.5.0 (slurp-file is missing)
+[IFUNDEF] slurp-file
+: slurp-file ( c-addr1 u1 -- c-addr2 u2 )
+    \ c-addr1 u1 is the filename, c-addr2 u2 is the file's contents
+    r/o bin open-file throw >r
+    r@ file-size throw abort" file too large"
+    dup allocate throw swap
+    2dup r@ read-file throw over <> abort" could not read whole file"
+    r> close-file throw ;
+[THEN]
+
 : primfilter ( addr u -- )
     \ process the string at addr u
     over dup rawinput ! dup line-start ! cookedinput !