mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-11-26 02:49:17 +00:00
205 lines
13 KiB
Plaintext
205 lines
13 KiB
Plaintext
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Screen 0 not modified
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0 \ ks 22 dez 87
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1
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2 Some simple tools for debugging.
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3 A state-of-the-art, interactive single step tracer
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4 and a couple of tools for decompiling and dumping
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Screen 1 not modified
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0 \ Trace Loadscreen ks cas 25sep16
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1 Onlyforth \needs Assembler 2 loadfrom asm.fb
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2
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3 Vocabulary Tools Tools also definitions
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4
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5 1 9 +thru Onlyforth .( Tools geladen) cr
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Screen 2 not modified
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0 \ trace - next ks 11 jun 87
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1
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2 | Variable nest? nest? off
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3
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4 Label tracenext 0 # nest? #) byte cmp 0=
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5 ?[ $5555 # I cmp here 2- >label (ip >=
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6 ?[ [[ swap lods A W xchg W ) jmp ]?
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7 $5555 # I cmp here 2- >label ip) CS ?]
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8 ][ 0 # nest? #) byte mov
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9 ]? $5555 # W mov here 2- >label >tracing W ) jmp
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10 end-code
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11
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12 | (ip Constant <ip | ip) Constant ip>
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13
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14 | : (debug ( addr -- ) dup <ip !
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15 BEGIN 1+ dup @ ['] unnest = UNTIL 2+ ip> ! ;
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Screen 3 not modified
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0 \ install Tracer ks 11 jun 87
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1
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2 Label (do-trace next-link # W mov D push
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3 $E9 # A- mov tracenext 1+ # C mov
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4 [[ W ) W mov W W or 0= not
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5 ?[[ A- -4 W D) mov C D mov W D sub
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6 D -3 W D) mov ]]? D pop ret end-code
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7
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8 Code do-trace (do-trace # call Next end-code
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10 ' end-trace Alias end-trace
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12 | Code (step (do-trace # call
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13 R ) I mov R inc R inc lods A W xchg W ) jmp
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14
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15 | Create: nextstep (step ;
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Screen 4 not modified
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0 \ tracer display ks 20 sep 88
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2 | Variable nest# nest# off
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4 | Variable 'ip 'ip off
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6 | Create: -nest r> ip> ! r> <ip ! -1 nest# +! ;
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7
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8 | : oneline .status space
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9 BEGIN query interpret tib #tib @ + 1- c@ BL =
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10 WHILE prompt &36 tab REPEAT
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11 -$20 allot r0 @ rp! r> r0 ! r> dup #tib !
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12 rp@ over tib swap cmove rp@ + rp!
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13 r> Is parser r> adr 'quit ! r> >in !
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14 r> blk ! r> state ! r> output ! r> input ! ;
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Screen 5 not modified
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0 \ tracer display ks 16 sep 88
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1
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2 | : tracing end-trace nest? @
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3 IF r> <ip @ >r ip> @ >r -nest >r >r
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4 1 nest# +! r@ 2- (debug nest? off THEN r@ 'ip !
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5 nextstep >r input @ >r output @ >r state @ >r
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6 blk @ >r >in @ >r adr 'quit @ >r adr parser @ >r
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7 tib #tib @ rp@ over - under rp! cmove #tib @ >r
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8 r0 @ >r rp@ r0 ! standardi/o
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9 cr nest# @ spaces 'ip @ dup 5 u.r @ dup 5 u.r
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10 2 spaces >name .name &30 nest# @ + tab .s
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11 $20 allot ['] oneline Is 'quit quit ;
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12 ' tracing >tracing !
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Screen 6 not modified
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0 \ test traceability ks 07 dez 87
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1
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2 | : traceable ( cfa -- cfa' ) recursive dup @
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3 [ ' : @ ] Literal case? ?exit
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4 [ ' key @ ] Literal case? IF >body c@ Input @ +
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5 @ traceable exit THEN
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6 [ ' type @ ] Literal case? IF >body c@ Output @ +
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7 @ traceable exit THEN
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8 [ ' r/w @ ] Literal case? IF >body @ traceable exit THEN
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9 c@ $E9 = IF @ 1+ exit THEN \ Does> word
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10 >name .name ." can't be DEBUGged" quit ;
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Screen 7 not modified
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0 \ user words for tracing ks 16 sep 88
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1 | : do_debug ( addr -- )
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2 traceable (debug nest? off nest# off do-trace ;
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3
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4 : nest \ trace next high-level word executed
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5 'ip @ @ traceable drop nest? on ;
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6
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7 : unnest \ ends tracing of actual word
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8 <ip on ip> off ; unnest \ clears trap range
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9
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10 : endloop \ stop tracing loop
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11 'ip @ <ip ! ; \ use when at end of loop
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13 : debug ' do_debug ;
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15 : trace ' dup >r do_debug r> execute end-trace unnest ;
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Screen 8 not modified
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0 \ tools for decompiling, interactive use ks 04 jul 87
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1
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2 | : ?: ( addr -- addr ) dup 5 u.r ." :" ;
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3 | : @? ( addr -- addr ) dup @ 6 u.r ;
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4 | : c? ( addr -- addr ) dup c@ 3 .r ;
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5 | : end $28 tab ;
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6
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7 : s ( addr1 -- addr2 )
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8 ?: 3 spaces c? 2 spaces count 2dup type + even end ;
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9 : n ( addr1 -- addr2 )
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10 ?: @? 2 spaces dup @ >name .name 2+ end ;
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11 : d ( addr1 n -- addr2 ) 2dup swap ?: 3 spaces
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12 swap 0 DO c? 1+ LOOP 2 spaces -rot type end ;
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13 : l ( addr1 -- addr2 ) ?: 6 spaces @? 2+ end ;
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14 : c ( addr1 -- addr2 ) 1 d end ;
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15 : b ( addr1 -- addr2 ) ?: @? dup @ over + 6 u.r 2+ end ;
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Screen 9 not modified
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0 \ often times ks 29 jun 87
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1 Onlyforth
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3 : often stop? ?exit >in off ;
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5 | Variable #times #times off
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7 : times ( n -- ) ?dup
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8 IF #times @ 2+ u< stop? or
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9 IF #times off exit THEN 1 #times +!
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10 ELSE stop? ?exit
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11 THEN >in off ;
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Screen 10 not modified
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0 \ dump ks 04 jul 87
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1
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2 : dump ( addr n -- ) base push hex
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3 bounds ?DO cr I $10 [ Tools ] d [ Forth ] drop
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4 stop? IF LEAVE THEN $10 +LOOP ;
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5
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6 | : ld ( seg:addr -- )
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7 over 4 u.r ." :" dup 0 <# # # # # #> type
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8 3 spaces ds@ pad $10 lmove pad $10 bounds
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9 DO I c@ 3 u.r LOOP 2 spaces pad $10 type ;
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10
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11 : ldump ( seg:addr quan -- ) base push hex
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12 0 DO cr 2dup ld $10 + stop? IF LEAVE THEN
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13 $10 +LOOP 2drop ;
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