| \ CROSS.FS The Cross-Compiler 06oct92py |
\ CROSS.FS The Cross-Compiler 06oct92py |
| \ $Id$ |
\ $Id$ |
| \ Idea and implementation: Bernd Paysan (py) |
\ Idea and implementation: Bernd Paysan (py) |
| \ Copyright 1992 by the ANSI figForth Development Group |
\ Copyright 1992-94 by the GNU Forth Development Group |
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| \ Log: |
\ Log: |
| \ changed in ; [ to state off 12may93jaw |
\ changed in ; [ to state off 12may93jaw |
| here GhostNames @ , GhostNames ! here 0 , |
here GhostNames @ , GhostNames ! here 0 , |
| bl word count |
bl word count |
| \ 2dup type space |
\ 2dup type space |
| dup c, here over chars allot swap move align ; |
string, cfalign ; |
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| hex |
hex |
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| included |
included |
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\ Create additional parameters 19jan95py |
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T |
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cell Constant tcell |
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cell<< Constant tcell<< |
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cell>bit Constant tcell>bit |
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bits/byte Constant tbits/byte |
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float Constant tfloat |
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1 bits/byte lshift Constant maxbyte |
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H |
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| >TARGET |
>TARGET |
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| \ Byte ordering and cell size 06oct92py |
\ Byte ordering and cell size 06oct92py |
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| : cell+ cell + ; |
: cell+ tcell + ; |
| : cells cell<< lshift ; |
: cells tcell<< lshift ; |
| : chars ; |
: chars ; |
| : floats float * ; |
: floats tfloat * ; |
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| >CROSS |
>CROSS |
| : cell/ cell<< rshift ; |
: cell/ tcell<< rshift ; |
| >TARGET |
>TARGET |
| 20 CONSTANT bl |
20 CONSTANT bl |
| -1 Constant NIL |
-1 Constant NIL |
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| >CROSS |
>CROSS |
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| bigendian 0 pad ! -1 pad c! pad @ 0< |
bigendian |
| = [IF] : bswap ; immediate |
[IF] |
| [ELSE] : bswap ( big / little -- little / big ) 0 |
: T! ( n addr -- ) >r s>d r> tcell bounds swap 1- |
| cell 1- FOR bits/byte lshift over |
DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ; |
| [ 1 bits/byte lshift 1- ] Literal and or |
: T@ ( addr -- n ) >r 0 0 r> tcell bounds |
| swap bits/byte rshift swap NEXT nip ; |
DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ; |
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[ELSE] |
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: T! ( n addr -- ) >r s>d r> tcell bounds |
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DO maxbyte ud/mod rot I c! LOOP 2drop ; |
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: T@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1- |
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DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ; |
| [THEN] |
[THEN] |
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| \ Memory initialisation 05dec92py |
\ Memory initialisation 05dec92py |
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| : align+ ( taddr -- rest ) |
: align+ ( taddr -- rest ) |
| cell tuck 1- and - [ cell 1- ] Literal and ; |
cell tuck 1- and - [ cell 1- ] Literal and ; |
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: cfalign+ ( taddr -- rest ) |
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\ see kernal.fs:cfaligned |
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float tuck 1- and - [ float 1- ] Literal and ; |
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| >TARGET |
>TARGET |
| : aligned ( taddr -- ta-addr ) dup align+ + ; |
: aligned ( taddr -- ta-addr ) dup align+ + ; |
| \ assumes cell alignment granularity (as GNU C) |
\ assumes cell alignment granularity (as GNU C) |
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: cfaligned ( taddr1 -- taddr2 ) |
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\ see kernal.fs |
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dup cfalign+ + ; |
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| >CROSS |
>CROSS |
| : >image ( taddr -- absaddr ) image @ + ; |
: >image ( taddr -- absaddr ) image @ + ; |
| >TARGET |
>TARGET |
| : @ ( taddr -- w ) >image @ bswap ; |
: @ ( taddr -- w ) >image t@ ; |
| : ! ( w taddr -- ) >r bswap r> >image ! ; |
: ! ( w taddr -- ) >image t! ; |
| : c@ ( taddr -- char ) >image c@ ; |
: c@ ( taddr -- char ) >image c@ ; |
| : c! ( char taddr -- ) >image c! ; |
: c! ( char taddr -- ) >image c! ; |
| : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ; |
: 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ; |
| : , ( w -- ) T here H cell T allot ! H ; |
: , ( w -- ) T here H cell T allot ! H ; |
| : c, ( char -- ) T here 1 allot c! H ; |
: c, ( char -- ) T here 1 allot c! H ; |
| : align ( -- ) T here H align+ 0 ?DO bl T c, H LOOP ; |
: align ( -- ) T here H align+ 0 ?DO bl T c, H LOOP ; |
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: cfalign ( -- ) |
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T here H cfalign+ 0 ?DO bl T c, H LOOP ; |
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| : A! dup relon T ! H ; |
: A! dup relon T ! H ; |
| : A, ( w -- ) T here H relon T , H ; |
: A, ( w -- ) T here H relon T , H ; |
| BEGIN @ dup |
BEGIN @ dup |
| WHILE 2dup cell+ @ = |
WHILE 2dup cell+ @ = |
| UNTIL |
UNTIL |
| nip 2 cells + count cr ." CROSS: Exists: " type 4 spaces |
2 cells + count cr ." CROSS: Exists: " type 4 spaces drop |
| swap cell+ ! |
swap cell+ ! |
| ELSE true ABORT" CROSS: Ghostnames inconsistent" |
ELSE true ABORT" CROSS: Ghostnames inconsistent" |
| THEN ; |
THEN ; |
| |
|
| >TARGET |
>TARGET |
| : immediate 20 flag! |
: immediate 20 flag! |
| ^imm @ @ dup <imm> = ?EXIT |
^imm @ @ dup <imm> = IF drop EXIT THEN |
| <res> <> ABORT" CROSS: Cannot immediate a unresolved word" |
<res> <> ABORT" CROSS: Cannot immediate a unresolved word" |
| <imm> ^imm @ ! ; |
<imm> ^imm @ ! ; |
| : restrict 40 flag! ; |
: restrict 40 flag! ; |
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| : ALIAS2 create here 0 , DOES> @ execute ; |
: ALIAS2 create here 0 , DOES> @ execute ; |
| \ usage: |
\ usage: |
| \ ' alias2 bla ! |
\ ' <name> alias2 bla ! |
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| \ Target Header Creation 01nov92py |
\ Target Header Creation 01nov92py |
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| : string, ( addr count -- ) |
: string, ( addr count -- ) |
| dup T c, H bounds DO I c@ T c, H LOOP ; |
dup T c, H bounds DO I c@ T c, H LOOP ; |
| : name, ( "name" -- ) bl word count string, T align H ; |
: name, ( "name" -- ) bl word count string, T cfalign H ; |
| : view, ( -- ) ( dummy ) ; |
: view, ( -- ) ( dummy ) ; |
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| VARIABLE CreateFlag CreateFlag off |
VARIABLE CreateFlag CreateFlag off |
| Variable tudp 0 tudp ! |
Variable tudp 0 tudp ! |
| : u, ( n -- udp ) |
: u, ( n -- udp ) |
| tup @ tudp @ + T ! H |
tup @ tudp @ + T ! H |
| tudp @ dup cell+ tudp ! ; |
tudp @ dup T cell+ H tudp ! ; |
| : au, ( n -- udp ) |
: au, ( n -- udp ) |
| tup @ tudp @ + T A! H |
tup @ tudp @ + T A! H |
| tudp @ dup cell+ tudp ! ; |
tudp @ dup T cell+ H tudp ! ; |
| >TARGET |
>TARGET |
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| Build: T 0 u, , H ; |
Build: T 0 u, , H ; |
| : save-cross ( "name" -- ) |
: save-cross ( "name" -- ) |
| bl parse ." Saving to " 2dup type |
bl parse ." Saving to " 2dup type |
| w/o bin create-file throw >r |
w/o bin create-file throw >r |
| image @ there r@ write-file throw |
s" gforth00" r@ write-file throw \ write magic |
| bit$ @ there 1- cell>bit rshift 1+ r@ write-file throw |
image @ there r@ write-file throw \ write image |
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bit$ @ there 1- cell>bit rshift 1+ |
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r@ write-file throw \ write tags |
| r> close-file throw ; |
r> close-file throw ; |
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| \ words that should be in minimal |
\ words that should be in minimal |
| : * * ; : / / ; |
: * * ; : / / ; |
| : dup dup ; : over over ; |
: dup dup ; : over over ; |
| : swap swap ; : rot rot ; |
: swap swap ; : rot rot ; |
| : drop drop ; |
: drop drop ; : = = ; |
| : lshift lshift ; : 2/ 2/ ; |
: lshift lshift ; : 2/ 2/ ; |
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: . . ; |
| cell constant cell |
cell constant cell |
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| \ include bug5.fs |
\ include bug5.fs |