mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-11-03 07:05:57 +00:00
273 lines
17 KiB
Plaintext
273 lines
17 KiB
Plaintext
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0 \\ Tools 11Nov86
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1 Dieses File enthaelt die wichtigsten Werkzeuge zur Programm-
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2 entwicklung: - den einfachen Decompiler
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3 - der DUMP-Befehl
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4 - den Tracer
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5
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6 Der einfache Decompiler wird benutzt, um neue Defining-Words
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7 zu ueberpruefen. Der automatische Decompiler kann ja dafuer
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8 nicht benutzt werden, da ihm diese Strukturen unbekannt sind.
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9 (Benutzung: addr und dann, je nach Art: S N D L C oder B)
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10
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11 DUMP wird zum Ausgeben von Hexdumps benutzt. (from count DUMP)
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12
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13 Der Tracer erlaubt Einzelschrittausfuehrung von Worten.
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14 Er ist unentbehrliches Hilfsmittel bei der Fehlersuche.
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15 (Benutzung: DEBUG <name> und END-TRACE)
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0 \ Loadscreen for simple decompiler and tracer 11Nov86
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1
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2 Onlyforth Vocabulary Tools Tools also definitions
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3
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4 01 05 +thru
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5 06 +load \ Tracer
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6
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7 Onlyforth
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8
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9 : internal \ start headerless definitions
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10 1 ?head ! ;
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11
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12 : external \ end headerless definitions
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13 ?head off ;
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14
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15
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Screen 2 not modified
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0 \ Tools for decompiling 22feb86
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1
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2 | : ?: dup 4 u.r ." :" ;
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3 | : @? dup @ 6 u.r ;
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4 | : c? dup c@ 3 .r ;
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5
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6 : s ( adr - adr+ )
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7 ?: space c? 3 spaces dup 1+ over c@ type dup c@ + 1+ even ;
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8
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9 : n ( adr - adr+2 ) ?: @? 2 spaces dup @ >name .name 2+ ;
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10 : d ( adr n - adr+n)
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11 2dup swap ?: swap 0 DO c? 1+ LOOP 2 spaces -rot type ;
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12
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0 \ Tools for decompiling 22feb86
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1
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2 : l ( adr - adr+2 ) ?: 5 spaces @? 2+ ;
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3 : c ( adr - adr+1) 1 d ;
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4 : b ( adr - adr+1) ?: @? dup @ over + 5 u.r 2+ ;
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5
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6
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7
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8 \\
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9 : dump ( adr n -) bounds ?DO cr I 10 d drop stop? IF LEAVE
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10 THEN 10 +LOOP ;
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0 \ General Dump Utility - Output UH 07Jun86
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1
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2 | : .2 ( n -- ) 0 <# # # #> type space ;
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3 | : .6 ( d -- ) <# # # # # # # #> type ;
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4 | : d.2 ( addr len -- ) bounds ?DO I C@ .2 LOOP ;
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5 | : emit. ( char -- )
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6 $7F and dup bl $7E uwithin not IF drop Ascii . THEN emit ;
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7 | : dln ( addr --- )
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8 cr dup 6 u.r 2 spaces 8 2dup d.2 space
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9 over + 8 d.2 space $10 bounds ?DO I C@ EMIT. LOOP ;
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10 | : ?.n ( n1 n2 -- n1 )
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11 2dup = IF ." \/" drop ELSE 2 .r THEN space ;
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12 | : ?.a ( n1 n2 -- n1 )
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13 2dup = IF ." V" drop ELSE 1 .r THEN ;
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0 \ .head UH 03Jun86
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1
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2
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3 | : .head ( addr len -- addr' len' )
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4 swap dup -$10 and swap $0F and cr 8 spaces
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5 8 0 DO I ?.n LOOP space $10 8 DO I ?.n LOOP
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6 space $10 0 DO I ?.a LOOP rot + ;
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0 \ Dump and Fill Memory Utility UH 25Aug86
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1
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2 Forth definitions
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3
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4 : dump ( addr len -- )
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5 base push hex .head
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6 bounds ?DO I dln stop? IF LEAVE THEN $10 +LOOP ;
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7
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8 Tools definitions
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9
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10 : du ( addr -- addr+$40 ) dup $40 dump $40 + ;
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11
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12 : dl ( line# -- ) c/l * scr @ block + c/l dump ;
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13
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14 Forth definitions
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0 \ Trace Loadscreen 29Jun86
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1
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2 Onlyforth \needs Tools Vocabulary Tools
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3 Tools also definitions
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4
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5 1 8 +thru
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6
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7 Onlyforth
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8
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9 \ clear
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11 \ don't forget END-TRACE after using DEBUG
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Screen 8 not modified
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0 \ Variables do-trace UH 04Nov86
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1
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2 | Variable Wsave \ Variable for saving W
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3 | Variable <ip \ start of trace trap range
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4 | Variable ip> \ end of trace trap range
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5 | Variable 'ip \ holds IP (preincrement!)
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6 | Variable nest? \ True if NEST shall be performed
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7 | Variable newnext \ Address of new Next for tracing
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8 | Variable #spaces \ for indenting nested trace
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9 | Variable tracing \ true if trace mode active
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0 \ install Tracer UH 18Nov87
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1
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2 Tools definitions
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3
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4 | Code do-trace \ patch Next to new definition
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5 $C3 A mvi ( jmp ) >next sta
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6 newnext lhld >next 1+ shld Next
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7 end-code
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8
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Screen 10 not modified
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0 \ throw status on Return-Stack 29Jun86
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1
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2 | Create: npull
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3 rp@ count 2dup + even rp! r> swap cmove ;
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4
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5 : npush ( addr len --) r> -rot over >r
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6 rp@ over 1+ - even dup rp! place npull >r >r ;
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7
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8 | : oneline .status space query interpret -&82 allot
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9 rdrop ( delete quit from tracenext ) ;
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Screen 11 not modified
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0 \ reenter tracer 04Nov86
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1
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2 | Code (step
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3 true H lxi tracing shld IP rpop Wsave lhld H W mvx
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4 Label fnext
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5 xchg
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6 M E mov H inx M D mov xchg pchl
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7 end-code
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8
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9 | Create: nextstep (step ;
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11 | : (debug ( addr --) \ start tracing at addr
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12 dup <ip !
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13 BEGIN 1+ dup @ ['] unnest = UNTIL 2+ ip> ! ;
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0 \ check trace conditions 04Nov86
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1
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2 Label tracenext tracenext newnext !
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3 IP ldax IP inx A L mov IP ldax IP inx A H mov
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4 xchg tracing lhld H A mov L ora fnext jz
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5 nest? 1+ lda A ana
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6 0= ?[
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7 <IP lhld H inx
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8 IP A mov H cmp fnext jc
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9 0= ?[ IP' A mov L cmp fnext jc ]?
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10 IP> lhld
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11 H A mov IP cmp fnext jc
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12 0= ?[ L A mov IP' cmp fnext jc ]?
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13 ][ A xra nest? 1+ sta ]? \ low byte still set
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14 \ one trace condition satisfied
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15 W H mvx Wsave shld false H lxi tracing shld
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Screen 13 not modified
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0 \ tracer display UH 25Jan88
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1
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2 ;c: nest? @
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3 IF nest? off r> ip> push <ip push dup 2- (debug
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4 #spaces push 1 #spaces +! >r THEN
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5 r@ nextstep >r input push output push standardi/o
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6 cr #spaces @ spaces
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7 dup 'ip ! 2- dup 5 u.r @ dup 6 u.r 2 spaces
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8 >name .name $1C col - 0 max spaces .s
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9 state push blk push >in push ['] 'quit >body push
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10 [ ' parser >body ] Literal push
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11 span push #tib push tib #tib @ npush r0 push
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12 rp@ r0 ! &82 allot ['] oneline Is 'quit quit ;
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Screen 14 not modified
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0 \ DEBUG with errorchecking 28Nov86
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1
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2 | : traceable ( cfa -- cfa' )
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3 recursive dup @
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4 ['] : @ case? ?exit
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5 ['] key @ case? IF >body c@ Input @ + @ traceable exit THEN
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6 ['] type @ case? IF >body c@ Output @ + @ traceable exit THEN
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7 ['] r/w @ case? IF >body traceable exit THEN
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8 dup 1+ @ [ ' Forth @ 1+ @ ] Literal = IF nip 1+ exit THEN
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9 drop >name .name ." can't be DEBUGged" quit ;
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10
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11 also Forth definitions
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12
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13 : debug ( -- ) \ reads a word
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14 ' traceable (debug Tools
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15 nest? off #spaces off tracing on do-trace ;
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Screen 15 not modified
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0 \ misc. words for tracing 28Nov86
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1 Tools definitions
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2
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3 : nest \ trace next high-level word executed
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4 'ip @ 2- @ traceable drop nest? on ;
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5
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6 : unnest \ ends tracing of actual word
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7 <ip on ip> off ; \ clears trap range
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8
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9 : endloop \ stop tracing loop
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10 'ip @ <ip ! ; \ use when at end of loop
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11
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12 Forth definitions
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13
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14 : trace' ( -- ) \ reads a word
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15 context push debug <ip perform end-trace ;
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