mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-11-18 10:09:33 +00:00
222 lines
14 KiB
Forth
222 lines
14 KiB
Forth
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\ *** Block No. 0 Hexblock 0
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\ ks 22 dez 87
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Some simple tools for debugging.
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A state-of-the-art, interactive single step tracer
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and a couple of tools for decompiling and dumping
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\ *** Block No. 1 Hexblock 1
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\ Programming-Tools word set cas 19july2020
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Onlyforth \needs Assembler 2 loadfrom asm.fb
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Vocabulary Tools Tools also definitions
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1 11 +thru Onlyforth .( Tools loaded ) cr
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\ *** Block No. 2 Hexblock 2
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\ trace - next ks 11 jun 87
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| Variable nest? nest? off
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Label tracenext 0 # nest? #) byte cmp 0=
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?[ $5555 # I cmp here 2- >label (ip >=
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?[ [[ swap lods A W xchg W ) jmp ]?
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$5555 # I cmp here 2- >label ip) CS ?]
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][ 0 # nest? #) byte mov
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]? $5555 # W mov here 2- >label >tracing W ) jmp
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end-code
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| (ip Constant <ip | ip) Constant ip>
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| : (debug ( addr -- ) dup <ip !
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BEGIN 1+ dup @ ['] unnest = UNTIL 2+ ip> ! ;
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\ *** Block No. 3 Hexblock 3
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\ install Tracer ks 11 jun 87
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Label (do-trace next-link # W mov D push
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$E9 # A- mov tracenext 1+ # C mov
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[[ W ) W mov W W or 0= not
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?[[ A- -4 W D) mov C D mov W D sub
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D -3 W D) mov ]]? D pop ret end-code
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Code do-trace (do-trace # call Next end-code
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' end-trace Alias end-trace
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| Code (step (do-trace # call
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R ) I mov R inc R inc lods A W xchg W ) jmp
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| Create: nextstep (step ;
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\ *** Block No. 4 Hexblock 4
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\ tracer display ks 20 sep 88
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| Variable nest# nest# off
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| Variable 'ip 'ip off
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| Create: -nest r> ip> ! r> <ip ! -1 nest# +! ;
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| : oneline .status space
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BEGIN query interpret tib #tib @ + 1- c@ BL =
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WHILE prompt &36 tab REPEAT
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-$20 allot r0 @ rp! r> r0 ! r> dup #tib !
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rp@ over tib swap cmove rp@ + rp!
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r> Is parser r> adr 'quit ! r> >in !
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r> blk ! r> state ! r> output ! r> input ! ;
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\ *** Block No. 5 Hexblock 5
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\ tracer display ks 16 sep 88
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| : tracing end-trace nest? @
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IF r> <ip @ >r ip> @ >r -nest >r >r
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1 nest# +! r@ 2- (debug nest? off THEN r@ 'ip !
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nextstep >r input @ >r output @ >r state @ >r
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blk @ >r >in @ >r adr 'quit @ >r adr parser @ >r
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tib #tib @ rp@ over - under rp! cmove #tib @ >r
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r0 @ >r rp@ r0 ! standardi/o
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cr nest# @ spaces 'ip @ dup 5 u.r @ dup 5 u.r
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2 spaces >name .name &30 nest# @ + tab .s
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$20 allot ['] oneline Is 'quit quit ;
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' tracing >tracing !
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\ *** Block No. 6 Hexblock 6
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\ test traceability ks 07 dez 87
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| : traceable ( cfa -- cfa' ) recursive dup @
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[ ' : @ ] Literal case? ?exit
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[ ' key @ ] Literal case? IF >body c@ Input @ +
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@ traceable exit THEN
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[ ' type @ ] Literal case? IF >body c@ Output @ +
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@ traceable exit THEN
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[ ' r/w @ ] Literal case? IF >body @ traceable exit THEN
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c@ $E9 = IF @ 1+ exit THEN \ Does> word
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>name .name ." can't be DEBUGged" quit ;
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\ *** Block No. 7 Hexblock 7
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\ user words for tracing ks 16 sep 88
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| : do_debug ( addr -- )
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traceable (debug nest? off nest# off do-trace ;
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: nest \ trace next high-level word executed
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'ip @ @ traceable drop nest? on ;
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: unnest \ ends tracing of actual word
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<ip on ip> off ; unnest \ clears trap range
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: endloop \ stop tracing loop
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'ip @ <ip ! ; \ use when at end of loop
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: debug ' do_debug ;
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: trace ' dup >r do_debug r> execute end-trace unnest ;
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\ *** Block No. 8 Hexblock 8
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\ tools for decompiling, interactive use ks 04 jul 87
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| : ?: ( addr -- addr ) dup 5 u.r ." :" ;
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| : @? ( addr -- addr ) dup @ 6 u.r ;
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| : c? ( addr -- addr ) dup c@ 3 .r ;
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| : end $28 tab ;
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: s ( addr1 -- addr2 )
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?: 3 spaces c? 2 spaces count 2dup type + even end ;
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: n ( addr1 -- addr2 )
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?: @? 2 spaces dup @ >name .name 2+ end ;
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: d ( addr1 n -- addr2 ) 2dup swap ?: 3 spaces
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swap 0 DO c? 1+ LOOP 2 spaces -rot type end ;
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: l ( addr1 -- addr2 ) ?: 6 spaces @? 2+ end ;
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: c ( addr1 -- addr2 ) 1 d end ;
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: b ( addr1 -- addr2 ) ?: @? dup @ over + 6 u.r 2+ end ;
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\ *** Block No. 9 Hexblock 9
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\ often times ks 29 jun 87
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Onlyforth
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: often stop? ?exit >in off ;
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| Variable #times #times off
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: times ( n -- ) ?dup
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IF #times @ 2+ u< stop? or
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IF #times off exit THEN 1 #times +!
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ELSE stop? ?exit
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THEN >in off ;
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\ *** Block No. 10 Hexblock A
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\ dump ks 04 jul 87
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: dump ( addr n -- ) base push hex
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bounds ?DO cr I $10 [ Tools ] d [ Forth ] drop
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stop? IF LEAVE THEN $10 +LOOP ;
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| : ld ( seg:addr -- )
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over 4 u.r ." :" dup 0 <# # # # # #> type
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3 spaces ds@ pad $10 lmove pad $10 bounds
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DO I c@ 3 u.r LOOP 2 spaces pad $10 type ;
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: ldump ( seg:addr quan -- ) base push hex
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0 DO cr 2dup ld $10 + stop? IF LEAVE THEN
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$10 +LOOP 2drop ;
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\ *** Block No. 11 Hexblock B
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\ N>R NR> cr
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: N>R ( i * n +n -- ) ( R: -- j * x +n )
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\ Transfer N items and count to the return stack.
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DUP BEGIN DUP WHILE
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ROT R> SWAP >R >R
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1-
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REPEAT DROP R> SWAP >R >R ;
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: NR> ( -- i * x +n ) ( R: j * x +n -- )
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\ Pull N items and count off the return stack.
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R> R> SWAP >R DUP
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BEGIN DUP WHILE
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R> R> SWAP >R -ROT
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1-
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REPEAT DROP ;
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\ *** Block No. 12 Hexblock C
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\ ?
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: ? ( a-addr -- )
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\ Display the value stored at a-addr.
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@ . ;
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