mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-11-03 07:05:57 +00:00
358 lines
22 KiB
Forth
358 lines
22 KiB
Forth
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\ *** Block No. 0 Hexblock 0
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\ *** Block No. 1 Hexblock 1
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\ 68000 Disassembler loadscreen 05dec86we
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Onlyforth
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\needs >absaddr : >absaddr 0 forthstart d+ ;
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\needs Code .( Load assemble.scr first) abort
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1 ?head ! \ alle Disassembler-Worte headerless
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1 $12 +thru
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0 ?head !
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$13 +load \ Benutzer-Worte mit Header
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\ *** Block No. 2 Hexblock 2
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\ long words and presigns 14oct86we
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: l+ ( n -- ) extend d+ ;
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: l- ( n -- ) extend d- ;
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: l+! ( n addr -- ) >absaddr ln+! ;
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: .# Ascii # emit ;
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: .$ Ascii $ emit ;
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: ., Ascii , emit ;
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: .- Ascii - emit ;
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: .. Ascii . emit ;
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: .0r ( n width --) over abs swap
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<# 0 DO # LOOP swap sign #> type space ;
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\ *** Block No. 3 Hexblock 3
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\ signed / unsigned byte, word and long output 28jan86ma
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: .lformat ( laddr --) <# #s #> dup 8 swap - spaces type ;
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: .lu ( d -- ) <# #s #> type ;
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: .$lu ( d -- ) .$ .lu ;
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: .wo ( n -- ) 0 <# # # # # #> type ;
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: .$wu ( n -- ) .$ .wo ;
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: .$ws ( n -- ) dup $7FFF u>
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IF .- 1.0000 rot d- THEN .$ .wo ;
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: .by ( 8b -- ) 0 <# # # #> type ;
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: .$bu ( 8b -- ) .$ .by ;
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: .$bs ( 8b -- ) $FF and dup $7F >
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IF .- 100 swap - THEN .$ .by ;
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: .lb ( hi lo len -- ) bounds ?DO I over lc@ .by LOOP ;
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\ *** Block No. 4 Hexblock 4
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\ Variables and tabs 18jan86ma
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2Variable addr 2Variable dispaddr 2Variable saveaddr
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Variable opcode Variable mne Variable mode
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Variable reg Variable length Variable sr
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Variable predec
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&10 constant bytfld : tab row swap at ;
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&32 constant mnefld
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&40 constant adrfld : tab1 row adrfld at ;
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: getword
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addr 2@ 2 l+ 2dup addr 2! l@ ;
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: getlong
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addr 2@ 4 l+ 2dup addr 2! 2dup 2 l- l@ >r l@ r> ;
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\ *** Block No. 5 Hexblock 5
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\ print registernumber, dump 18jan86ma
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: .reg ( n -- ) 7 and Ascii 0 + emit ;
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: .(areg) ( n -- ) Ascii A emit .reg ;
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: .(dreg) ( n -- ) Ascii D emit .reg ;
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: .areg reg @ .(areg) ;
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: .dreg reg @ .(dreg) ;
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: .aind Ascii ( emit .areg Ascii ) emit ;
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: .apost .aind Ascii + emit ;
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: .apre .- .aind ;
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: dumpws getword .$ws ;
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: dumpw getword .$wu ;
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: dumpl getlong .$lu ;
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\ *** Block No. 6 Hexblock 6
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\ print length , bitmasking 04mar86we
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: len. length @
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0 case? IF ." .b" tab1 exit THEN
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1 case? IF ." .w" tab1 exit THEN
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2 case? IF ." .l" tab1 exit THEN
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tab1 drop ;
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Code shift ( n -- ) SP )+ D0 move SP ) D1 move
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D0 D1 lsr D1 SP ) move Next end-code
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: 4shft 4 shift ; : 8shft 8 shift ;
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: cshft $0C shift ;
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: bitce $0C shift 7 and ; : bit5 5 shift 1 and ;
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: bit6 6 shift 1 and ; : bit7 7 shift 1 and ;
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: bit10 $0A shift 1 and ; : bit11 $0B shift 1 and ;
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: bit8b 8 shift $0F and ;
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\ *** Block No. 7 Hexblock 7
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\ bitmasking 2 28jan86ma
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: bit02 7 and ; : bit8 8 shift 1 and ;
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: bit35 3 shift 7 and ; : bit3 3 shift 1 and ;
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: bit68 6 shift 7 and ; : bit9b 9 shift 7 and ;
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: bit67 6 shift 3 and ; : bit37 3 shift $1F and ;
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: len!. length ! len. ;
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: length6 opcode @ bit6 1+ len!. ;
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: length67 opcode @ bit67 len!. ;
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: reg02! opcode @ bit02 reg ! ;
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: reg9b! opcode @ bit9b reg ! ;
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: bit9b. .# opcode @ bit9b dup 0=
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IF drop 8 THEN .$bu ;
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\ *** Block No. 8 Hexblock 8
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\ list register 26jan86ma
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: reglist
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getword 10 0 DO
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dup 2/ swap 1 and
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IF I predec @
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IF $0F swap - THEN dup 7 >
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IF .(areg) ELSE .(dreg) THEN dup
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IF ." /" THEN
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THEN LOOP drop ;
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: mnext length6 reg02! .dreg ;
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\ *** Block No. 9 Hexblock 9
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\ print adressing mode bp 28Aug86
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: .a/pcreg mode @ 7 =
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IF ." PC" ELSE .areg THEN ;
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: l? ( ext.word -- ) $800 and IF ." .L" exit THEN ." .W" ;
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: i8bit
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getword dup .$bs
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Ascii ( emit .a/pcreg ., dup $7FFF >
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IF Ascii A emit ELSE Ascii D emit THEN
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dup bitce .reg l? Ascii ) emit ;
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: imm
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.# length @
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0 case? IF getword .$bu exit THEN
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1 case? IF dumpw exit THEN
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2 case? IF dumpl exit THEN drop ;
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\ *** Block No. 10 Hexblock A
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\ print adressing mode 28jan86ma
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: mode7 reg @
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0 case? IF dumpws exit THEN
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1 case? IF dumpl exit THEN
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2 case? IF dumpws ." (PC)" exit THEN
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3 case? IF i8bit exit THEN
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4 case? IF sr @ IF ." SR" ELSE imm THEN exit THEN
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drop ." ???" ;
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: effadr mode @
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0 case? IF .dreg exit THEN 1 case? IF .areg exit THEN
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2 case? IF .aind exit THEN 3 case? IF .apost exit THEN
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4 case? IF .apre exit THEN 5 case? IF dumpws .aind exit THEN
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6 case? IF i8bit exit THEN 7 case? IF mode7 exit THEN
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drop ;
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\ *** Block No. 11 Hexblock B
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\ find register and mode 28jan86ma
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: .ea opcode @ dup bit02 reg ! bit35 mode ! effadr ;
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: .eadest opcode @ dup bit68 mode ! bit9b reg ! effadr ;
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: mnabcd
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tab1 opcode @ bit3
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IF reg02! .apre ., reg9b! .apre
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ELSE reg02! .dreg ., reg9b! .dreg THEN ;
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: mnaddx length67 mnabcd ;
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: mncmpm length67 reg02! .apost ., reg9b! .apost ;
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: mnexg
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tab1 reg9b! opcode @ bit37
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dup 9 = IF .areg ELSE .dreg THEN ., reg02!
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8 = IF .dreg ELSE .areg THEN ;
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: mnadd length67 opcode @
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bit8 IF reg9b! .dreg ., .ea
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ELSE .ea ., reg9b! .dreg THEN ;
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\ *** Block No. 12 Hexblock C
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\ find register and mode 26jan86ma
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: mnadda opcode @ bit8 1+ len!. .ea ., reg9b! .areg ;
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: mnaddi length67 imm ., 1 sr ! .ea ;
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: mnaddq length67 bit9b. ., .ea ;
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: mnmoveq tab1 .# opcode @ .$bs ., reg9b! .dreg ;
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: mnswap tab1 reg02! .dreg ;
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: mnunlk tab1 reg02! .areg ;
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: mnclr length67 .ea ;
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: mnjmp tab1 .ea ;
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: mnchk mnjmp ., reg9b! .dreg ;
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: mnlea tab1 .ea ., reg9b! .areg ;
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: mnbchg tab1 opcode @ bit8
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IF reg9b! .dreg ELSE .# dumpw THEN ., .ea ;
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: mnbchg2 tab1 reg9b! .dreg ., .ea ;
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: .dir opcode @ bit8
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IF Ascii l emit ELSE Ascii r emit THEN ;
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\ *** Block No. 13 Hexblock D
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\ find register and mode 23sep86we
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: mnshft
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.dir length67 opcode @ bit5
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IF reg9b! .dreg ELSE bit9b. THEN ., reg02! .dreg ;
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: mnshft2 .dir mnjmp ;
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: reladr2
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getword dup $7FFF >
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IF 1.0000 rot d- THEN 2+ dispaddr 2@ rot l+ .$lu ;
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: reladr
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opcode @ $FF and ?dup
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IF dup $7F > IF 100 - THEN 2+ dispaddr 2@ rot l+ .$lu
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ELSE reladr2 THEN ;
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: quote Create $22 word drop $22 allot Does> 1+ ;
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quote ctbl0 t f hilscccsneeqvcvsplmigeltgtle"
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quote ctbl1 rasrhilscccsneeqvcvsplmigeltgtle"
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\ *** Block No. 14 Hexblock E
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\ find register and mode 18jan86ma
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: .cond ( ctblflag --> )
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IF ctbl1 ELSE ctbl0 THEN
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opcode @ bit8b 2* + 2 type tab1 ;
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: mnscc 0 .cond .ea ;
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: mnbcc 1 .cond reladr ;
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: mndbcc 0 .cond reg02! .dreg ., reladr2 ;
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: mnlink tab1 reg02! .areg ., .# dumpws ;
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: mnmove
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4 opcode @ bitce - dup 3 = IF drop 0 THEN
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len!. .ea ., .eadest ;
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: mnmoveccr mnjmp ." ,ccr" ;
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: mnmovesr mnjmp ." ,sr" ;
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: mnmovefsr tab1 ." sr," .ea ;
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\ *** Block No. 15 Hexblock F
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\ find register and mode 26jan86ma
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: mnmoveusp tab1 reg02! opcode @ bit3
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IF ." usp," .areg ELSE .areg ." ,usp" THEN ;
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: mnmovem
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length6 opcode @ dup bit35 4 = predec ! bit10
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IF .ea ., reglist ELSE reglist ., .ea THEN ;
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: mnmovep
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length6 opcode @ bit7
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IF reg9b! .dreg ., dumpws reg02! .aind
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ELSE dumpws reg02! .aind ., reg9b! .dreg THEN ;
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: mnstop tab1 .# dumpw ;
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: mntrap tab1 .# opcode @ $0F and .$bu ;
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: mnimp ;
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: t, swap , , [compile] ' , bl word drop 8 allot ;
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\ *** Block No. 16 Hexblock 10
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\ mask- and opcode-table 18jan86ma
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Create mntbl base @ hex
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ff00 0600 t, mnaddi addi ff00 0200 t, mnaddi andi
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ff00 0c00 t, mnaddi cmpi ff00 0a00 t, mnaddi eori
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ff00 0000 t, mnaddi ori ff00 0400 t, mnaddi subi
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ffc0 0840 t, mnbchg bchg ffc0 0880 t, mnbchg bclr
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ffc0 08c0 t, mnbchg bset ffc0 0800 t, mnbchg btst
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e1c0 2040 t, mnmove movea c000 0000 t, mnmove move
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ffff 4afc t, mnimp illegal ffff 4e71 t, mnimp nop
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ffff 4e70 t, mnimp reset ffff 4e73 t, mnimp rte
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ffff 4e77 t, mnimp rtr ffff 4e75 t, mnimp rts
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ffff 4e76 t, mnimp trapv ffff 4e72 t, mnstop stop
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fff0 4e40 t, mntrap trap fff8 4840 t, mnswap swap
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fff8 4e58 t, mnunlk unlk fff8 4e50 t, mnlink link
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ffb8 4880 t, mnext ext ffc0 44c0 t, mnmoveccr move
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\ *** Block No. 17 Hexblock 11
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\ mask- and opcode-table 18jan86ma
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ffc0 46c0 t, mnmovesr move ffc0 40c0 t, mnmovefsr move
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fff0 4e60 t, mnmoveusp move ffc0 4ac0 t, mnjmp tas
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ff00 4200 t, mnclr clr ff00 4400 t, mnclr neg
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ff00 4000 t, mnclr negx ff00 4600 t, mnclr not
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ff00 4a00 t, mnclr tst ffc0 4ec0 t, mnjmp jmp
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ffc0 4e80 t, mnjmp jsr ffc0 4800 t, mnjmp nbcd
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ffc0 4840 t, mnjmp pea f1c0 41c0 t, mnlea lea
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f1c0 4180 t, mnchk chk fb80 4880 t, mnmovem movem
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f0f8 50c8 t, mndbcc db f0c0 50c0 t, mnscc s
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f100 5000 t, mnaddq addq f100 5100 t, mnaddq subq
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f000 6000 t, mnbcc b f100 7000 t, mnmoveq moveq
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f1f0 8100 t, mnabcd sbcd f1c0 81c0 t, mnchk divs
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f1c0 80c0 t, mnchk divu f000 8000 t, mnadd or
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\ *** Block No. 18 Hexblock 12
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\ mask- and opcode-table 18jan86ma
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f0c0 90c0 t, mnadda suba f130 9100 t, mnaddx subx
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f000 9000 t, mnadd sub f000 a000 t, mnimp ?ext0a
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f0c0 b0c0 t, mnadda cmpa f138 b108 t, mncmpm cmpm
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f100 b100 t, mnadd eor f100 b000 t, mnadd cmp
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f1f0 c100 t, mnabcd abcd f1c0 c1c0 t, mnchk muls
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f1c0 c0c0 t, mnchk mulu f130 c100 t, mnexg exg
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f000 c000 t, mnadd and f0c0 d0c0 t, mnadda adda
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f130 d100 t, mnaddx addx f000 d000 t, mnadd add
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fec0 e0c0 t, mnshft2 as fec0 e2c0 t, mnshft2 ls
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fec0 e4c0 t, mnshft2 rox fec0 e6c0 t, mnshft2 ro
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f018 e000 t, mnshft as f018 e008 t, mnshft ls
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f018 e010 t, mnshft rox f018 e018 t, mnshft ro
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f000 f000 t, mnimp ?ext0f 0000 0000 t, mnimp ???
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base !
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\ *** Block No. 19 Hexblock 13
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\ search mne and dis a line 05dec86we
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: searchmne ( -- )
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mntbl 0 sr ! 0 predec !
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BEGIN dup @ opcode @ and over 2+ @ =
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IF dup 6 + count type 4+ @ execute exit THEN
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$0E + REPEAT ;
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: disline ( -- ) base push hex
|
||
|
|
cr dispaddr 2@ .lformat mnefld tab
|
||
|
|
addr 2@ 2dup saveaddr 2! l@ opcode !
|
||
|
|
searchmne 2 addr l+! bytfld tab
|
||
|
|
addr 2@ saveaddr 2@ d- drop dup >r dispaddr l+!
|
||
|
|
saveaddr 2@ swap r> .lb drop ;
|
||
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|
||
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||
|
|
\ *** Block No. 20 Hexblock 14
|
||
|
|
\ addr! dis ldis disw 14oct86we
|
||
|
|
|
||
|
|
: addr! 2dup addr 2! dispaddr 2! ;
|
||
|
|
|
||
|
|
: disassline addr! disline ;
|
||
|
|
|
||
|
|
: ldis addr! BEGIN disline stop? UNTIL cr ;
|
||
|
|
|
||
|
|
: dis >absaddr ldis ;
|
||
|
|
|
||
|
|
: disw ' 2+ dup ." Adresse : " u. cr >absaddr addr!
|
||
|
|
BEGIN
|
||
|
|
BEGIN disline opcode @ $4EF3 = stop? or UNTIL
|
||
|
|
key $FF and #esc = UNTIL
|
||
|
|
cr ;
|
||
|
|
|