mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-11-26 02:49:17 +00:00
273 lines
17 KiB
Forth
273 lines
17 KiB
Forth
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\ *** Block No. 0 Hexblock 0
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\\ *** Tools *** 25may86we
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In diesem File sind die wichtigsten Debugging-Tools enthalten.
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Dazu geh<EFBFBD>ren ein einfacher Decompiler, ein Speicherdump und
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der Tracer (s. Kapitel im Handbuch)
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Vor allem der Tracer hat sich als sehr sinnvolles Werkzeug bei
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der Fehlerbek<EFBFBD>mpfung entwickelt. Normalerweise sind Fehlerquel-
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len beim Tracen sofort auffindbar, manchmal allerdings auch
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nicht ganz so schnell ...
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\ *** Block No. 1 Hexblock 1
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\ Loadscreen for simple decompiler 26oct86we
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Onlyforth Vocabulary Tools Tools also definitions
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1 5 +thru
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6 +load \ Tracer
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Onlyforth
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\ *** Block No. 2 Hexblock 2
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\ Tools for decompiling 26oct86we
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| : ?: dup 4 u.r ." :" ;
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| : @? dup @ 6 u.r ;
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| : c? dup c@ 3 .r ;
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: s ( adr - adr+ )
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?: space c? 3 spaces dup 1+ over c@ type
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dup c@ + 1+ even ;
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: n ( adr - adr+2 ) ?: @? 2 spaces dup @ >name .name 2+ ;
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: k ( adr - adr+2 ) ?: 5 spaces @? 2+ ;
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: b ( adr - adr+1) ?: @? dup @ over + 5 u.r 2+ ;
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\ *** Block No. 3 Hexblock 3
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\ Tools for decompiling 26oct86we
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: d ( adr n - adr+n)
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2dup swap ?: swap 0 DO c? 1+ LOOP 2 spaces -rot type ;
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: c ( adr - adr+1) 1 d ;
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\\
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: dump ( adr n -) bounds ?DO cr I 10 d drop stop? IF LEAVE
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THEN 10 +LOOP ;
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\ dekompiliere String Name Konstant Char Branch Dump
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\ = = = = = =
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\ *** Block No. 4 Hexblock 4
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\ General Dump Utility - Output 26oct86we
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| : .2 ( n -- ) 0 <# # # #> type space ;
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| : .6 ( d -- ) <# # # # # # # #> type ;
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| : d.2 ( addr len -- ) bounds ?DO I c@ .2 LOOP ;
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| : emit. ( char -- ) $7F and
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dup bl $7E uwithin not IF drop Ascii . THEN emit ;
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| : dln ( addr --- )
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cr dup 6 u.r 2 spaces 8 2dup d.2 space
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over + 8 d.2 space $10 bounds ?DO I c@ EMIT. LOOP ;
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| : ?.n ( n1 n2 -- n1 )
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2dup = IF ." \/" drop ELSE 2 .r THEN space ;
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| : ?.a ( n1 n2 -- n1 )
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2dup = IF ." v" drop ELSE 1 .r THEN ;
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\ *** Block No. 5 Hexblock 5
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\ Longdump basics 24aug86we
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| : ld.2 ( hiaddr loaddr len -- hiaddr )
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bounds ?DO I over lc@ .2 LOOP ;
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| : ldln ( hiaddr loaddr -- )
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cr dup >r over .6 2 spaces
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r@ 8 ld.2 space r@ 8 + 8 ld.2 space
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r> $10 bounds ?DO I over lc@ emit. LOOP drop ;
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| : .head ( addr len -- addr' len' )
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swap dup -$10 and swap $0F and cr 8 spaces
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8 0 DO I ?.n LOOP space $10 8 DO I ?.n LOOP
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space $10 0 DO I ?.a LOOP rot + ;
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\ *** Block No. 6 Hexblock 6
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\ Dump and Fill Memory Utility 10sep86we
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Forth definitions
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: ldump ( laddr len -- )
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base push hex >r swap r> .head
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bounds ?DO dup I ldln stop? IF LEAVE THEN
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I $FFF0 = IF 1+ THEN $10 +LOOP drop ;
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: dump ( addr len -- )
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base push hex .head
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bounds ?DO I dln stop? IF LEAVE THEN $10 +LOOP ;
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\ *** Block No. 7 Hexblock 7
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\ Trace Loadscreen 26oct86we
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Onlyforth \needs Tools Vocabulary Tools
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Tools also definitions
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\needs cpush 1 +load
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\needs >absaddr : >absaddr 0 forthstart d+ ;
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2 8 +thru
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Onlyforth
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\ *** Block No. 8 Hexblock 8
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\ throw status on Return-Stack 26oct86we
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| Create: cpull
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rp@ count 2dup + even rp! r> swap cmove ;
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: cpush ( addr len --) r> -rot over >r
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rp@ over 2+ - even dup rp! place cpull >r >r ;
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\ *** Block No. 9 Hexblock 9
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\ Variables do-trace 10sep86we
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| Variable (W \ Variable for saving W
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| Variable <ip \ start of trace trap range
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| Variable ip> \ end of trace trap range
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| Variable nest? \ True if NEST shall performed
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| Variable newnext \ Address of new Next for tracing
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| Variable last' \ holds adr of position in traced word
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| Variable #spaces \ for indenting nested trace
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| Variable trap? \ True if trace is allowed
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\ *** Block No. 10 Hexblock A
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\ install Tracer 11sep86we
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Label trnext 0 # D6 move .l 0 D6 FP DI) jmp end-code
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Label (do-trace newnext R#) D0 move D0 trnext 2+ R#) move
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.w trnext # D6 move .l D6 reg) A0 lea A0 D5 move
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.w UP R#) D6 move
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.l ' next-link >body c@ D6 FP DI) D6 .w move
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BEGIN .l D6 reg) A1 lea .w D6 tst 0<>
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WHILE .w &10 # A1 suba .l D5 A0 move
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A0 )+ A1 )+ move A0 )+ A1 )+ move
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.w 2 A1 addq A1 ) D6 move
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REPEAT rts end-code
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Code do-trace \ opposite of end-trace
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(do-trace bsr Next end-code
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\ *** Block No. 11 Hexblock B
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\ reenter tracer 04sep86we
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| : oneline .status space query interpret -&82 allot
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rdrop ( delete quit from tracenext ) ;
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| Code (step
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RP )+ D7 move .l D7 IP lmove FP IP adda
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.w (W R#) D7 move -1 # trap? R#) move
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Label fnext
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D7 reg) D6 move D6 reg) jmp end-code
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| Create: nextstep (step ;
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: (debug ( addr -- ) \ start tracing at addr
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dup <ip ! BEGIN 1+ dup @ ['] unnest = UNTIL 2+ ip> ! ;
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\ *** Block No. 12 Hexblock C
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\ check trace conditions 10sep86we
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Label tracenext tracenext newnext !
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IP )+ D7 move
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trap? R#) tst fnext beq
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.b nest? R#) D0 move \ byte order!!
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0= IF .l IP D0 move FP D0 sub
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.w <ip R#) D0 cmp fnext bcs
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ip> R#) D0 cmp fnext bhi
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ELSE .b 0 # nest? R#) move THEN \ low byte still set
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\ one trace condition satisfied
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.w D7 (W R#) move trap? R#) clr
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\ *** Block No. 13 Hexblock D
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\ tracer display 26oct86we
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;c: nest? @
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IF nest? off r> ip> push <ip push dup 2- (debug
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#spaces push 1 #spaces +! >r THEN
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r@ nextstep >r input push output push standardi/o
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2- dup last' !
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cr #spaces @ spaces dup 5 u.r @ dup 6 u.r 2 spaces
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>name .name $1C col - 0 max spaces .s
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state push blk push >in push ['] 'quit >body push
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[ ' >interpret >body ] Literal push
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#tib push tib #tib @ cpush r0 push rp@ r0 !
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&82 allot ['] oneline Is 'quit quit ;
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\ *** Block No. 14 Hexblock E
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\ DEBUG with errorchecking 11sep86we
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| : traceable ( cfa -- adr)
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recursive dup @
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['] : @ case? ?exit
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['] key @ case? IF >body c@ Input @ + @ traceable exit THEN
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['] type @ case? IF >body c@ Output @ + @ traceable exit THEN
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['] r/w @ case? IF >body @ traceable exit THEN
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drop dup @ @ $4EAB = IF @ 4+ exit THEN \ 68000 voodoo code
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>name .name ." can't be DEBUGged" quit ;
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: nest \ trace next high-level word executed
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last' @ @ traceable drop nest? on ;
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: unnest \ ends tracing of actual word
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<ip on ip> off ; \ clears trap range
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\ *** Block No. 15 Hexblock F
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\ misc. words for tracing bp 9Mar86
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: endloop \ sets trap range next current word
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last' @ 4+ <ip ! ; \ used to skip LOOPs, REPEATs, ...
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' end-trace Alias unbug
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Forth definitions
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: debug ( --) \ reads a word
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' traceable Tools (debug
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nest? off trap? on #spaces off do-trace ;
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: trace' ( --) \ traces fol. word
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debug <ip perform end-trace ;
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