--- gforth/cross.fs 1994/07/13 19:20:59 1.8 +++ gforth/cross.fs 1994/09/09 16:27:17 1.12 @@ -1,5 +1,5 @@ \ CROSS.FS The Cross-Compiler 06oct92py -\ $Id: cross.fs,v 1.8 1994/07/13 19:20:59 pazsan Exp $ +\ $Id: cross.fs,v 1.12 1994/09/09 16:27:17 anton Exp $ \ Idea and implementation: Bernd Paysan (py) \ Copyright 1992 by the ANSI figForth Development Group @@ -21,7 +21,7 @@ \ targets 09jun93jaw \ added: 2user and value 11jun93jaw -include other.fs \ ansforth extentions for cross +\ include other.fs \ ansforth extentions for cross : comment? ( c-addr u -- c-addr u ) 2dup s" (" compare 0= @@ -31,47 +31,6 @@ include other.fs \ ansforth extent decimal -\ number? 11may93jaw - -\ checks for +, -, $, & ... -: leading? ( c-addr u -- c-addr u doubleflag negflag base ) - 2dup 1- chars + c@ [char] . = \ process double - IF dup 1 chars = IF over 1 swap c! false ELSE 1 chars - true THEN - \ only if more than only . ( may be number output! ) - \ if only . => store garbage - ELSE false THEN >r \ numbers - false -rot base @ -rot - BEGIN over c@ - dup [char] - = - IF drop >r >r >r - drop true r> r> r> 0 THEN - dup [char] + = - IF drop 0 THEN - dup [char] $ = - IF drop >r >r drop 16 r> r> 0 THEN - dup [char] & = - IF drop >r >r drop 10 r> r> 0 THEN - 0= IF 1 chars - swap char+ swap false ELSE true THEN - over 0= or - UNTIL - rot >r rot r> r> -rot ; - -: number? ( c-addr -- n/d flag ) -\ return -1 if cell 1 if double 0 if garbage - 0 swap 0 swap \ create double number - count leading? - base @ >r base ! - >r >r - >number IF 2drop false r> r> 2drop - r> base ! EXIT THEN - drop r> r> - IF IF dnegate 1 - ELSE drop negate -1 THEN - ELSE IF 1 ELSE drop -1 THEN - THEN r> base ! ; - - - \ Begin CROSS COMPILER: \ GhostNames 9may93jaw @@ -125,7 +84,7 @@ Variable tdp \ Parameter for target systems 06oct92py -include machine.fs +include-file >TARGET @@ -145,12 +104,13 @@ include machine.fs -3 Constant :docon -4 Constant :dovar -5 Constant :douser --6 Constant :dodoes --7 Constant :doesjump +-6 Constant :dodefer +-7 Constant :dodoes +-8 Constant :doesjump >CROSS -endian 0 pad ! -1 pad c! pad @ 0< +bigendian 0 pad ! -1 pad c! pad @ 0< = [IF] : bswap ; immediate [ELSE] : bswap ( big / little -- little / big ) 0 cell 1- FOR bits/byte lshift over @@ -260,11 +220,12 @@ Variable atonce atonce off : >magic ; : >link cell+ ; : >exec cell+ cell+ ; : >end 3 cells + ; +Variable last-ghost : Make-Ghost ( "name" -- ghost ) >in @ GhostName swap >in ! - DOES> >exec @ execute ; + DOES> dup last-ghost ! >exec @ execute ; \ ghost words 14oct92py \ changed: 10may93py/jaw @@ -336,7 +297,13 @@ variable ResolveFlag Ghostnames BEGIN @ dup WHILE dup ?resolved - REPEAT drop ResolveFlag @ 0= IF ." Nothing!" THEN cr ; + REPEAT drop ResolveFlag @ + IF + abort" Unresolved words!" + ELSE + ." Nothing!" + THEN + cr ; >CROSS \ Header states 12dec92py @@ -384,7 +351,8 @@ VARIABLE CreateFlag CreateFlag off VARIABLE ;Resolve 1 cells allot -: Theader ( "name" -- ) (THeader there resolve 0 ;Resolve ! ; +: Theader ( "name" -- ghost ) + (THeader dup there resolve 0 ;Resolve ! ; >TARGET : Alias ( cfa -- ) \ name @@ -424,6 +392,7 @@ ghost unloop ghost ;S ghost lit ghost (compile) ghost ! 2drop drop ghost (;code) ghost noop 2drop ghost (.") ghost (S") ghost (ABORT") 2drop drop +ghost ' \ compile 10may93jaw @@ -520,34 +489,33 @@ Cond: DOES> restrict? >in @ alias2 swap dup >in ! >r >r Make-Ghost rot swap >exec ! , r> r> >in ! - also ghosts ' previous swap ! - DOES> dup >exec @ execute ; + also ghosts ' previous swap ! ; +\ DOES> dup >exec @ execute ; : gdoes, ( ghost -- ) >end @ dup >magic @ <> IF dup >link @ dup 0< IF T A, 0 , H drop EXIT THEN drop THEN :dodoes T A, H gexecute T here H cell - reloff ; -: TCreate ( ghost -- ) +: TCreate ( -- ) + last-ghost @ CreateFlag on - Theader dup gdoes, - >end @ >exec @ execute ; + Theader >r dup gdoes, + >end @ >exec @ r> >exec ! ; : Build: ( -- [xt] [colon-sys] ) :noname postpone TCreate ; : gdoes> ( ghost -- addr flag ) + last-ghost @ state @ IF gexecute true EXIT THEN cell+ @ T >body H false ; \ DO: ;DO 11may93jaw \ changed to ?EXIT 10may93jaw -: (does>) postpone does> ; immediate \ second level does> - : DO: ( -- addr [xt] [colon-sys] ) here ghostheader - :noname - postpone (does>) postpone gdoes> postpone ?EXIT ; + :noname postpone gdoes> postpone ?EXIT ; : ;DO ( addr [xt] [colon-sys] -- ) postpone ; ( S addr xt ) @@ -614,6 +582,7 @@ Builder Value Build: ( -- ) compile noop ; DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO Builder Defer +by Defer :dodefer resolve \ structural conditionals 17dec92py @@ -682,6 +651,8 @@ Cond: ABORT" restrict? compile (ABORT Cond: IS T ' >body H compile ALiteral compile ! ;Cond : IS T ' >body ! H ; +Cond: TO T ' >body H compile ALiteral compile ! ;Cond +: TO T ' >body ! H ; \ LINKED ERR" ENV" 2ENV" 18may93jaw @@ -762,7 +733,7 @@ Cond: [ELSE] [ELSE] ;Cond \ [THEN] \ included throw after create-file 11may93jaw -endian Constant endian +bigendian Constant bigendian : save-cross ( "name" -- ) bl parse ." Saving to " 2dup type @@ -775,6 +746,7 @@ endian Constant endian : + + ; : 1- 1- ; : - - ; : 2* 2* ; +: * * ; : / / ; : dup dup ; : over over ; : swap swap ; : rot rot ;