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1.1 root 1: (include-if (null (get 'chead 'version)) "../chead.l")
2: (Liszt-file funb
3: "$Header: funb.l,v 1.12 83/08/28 17:14:58 layer Exp $")
4:
5: ;;; ---- f u n b function compilation
6: ;;;
7: ;;; -[Wed Aug 24 17:14:56 1983 by layer]-
8:
9: ;--- c-declare :: handle the "declare" form
10: ; if a declare is seen inside a function definition, we just
11: ; ignore it. We probably should see what it is declareing, as it
12: ; might be declaring a special.
13: ;
14: (defun c-declare nil nil)
15:
16: ;--- c-do :: compile a "do" expression
17: ;
18: ; a do has this form:
19: ; (do vrbls tst . body)
20: ; we note the special case of tst being nil, in which case the loop
21: ; is evaluated only once, and thus acts like a let with labels allowed.
22: ; The do statement is a cross between a prog and a lambda. It is like
23: ; a prog in that labels are allowed. It is like a lambda in that
24: ; we stack the values of all init forms then bind to the variables, just
25: ; like a lambda expression (that is the initial values of even specials
26: ; are stored on the stack, and then copied into the value cell of the
27: ; atom during the binding phase. From then on the stack location is
28: ; not used).
29: ;
30: (defun c-do nil
31: (let (b-vrbls b-tst b-body chklab bodylab x-repeat x-vrbs x-fst
32: g-loc g-cc oldreguse (g-decls g-decls))
33: (forcecomment '(beginning do))
34: (setq g-loc 'reg chklab (d-genlab) bodylab (d-genlab))
35:
36: (if (and (cadr v-form) (atom (cadr v-form)))
37: then (setq v-form (d-olddo-to-newdo (cdr v-form))))
38:
39: (push (cons 'do 0) g-locs) ; begin our frame
40:
41: (setq b-vrbls (cadr v-form)
42: b-tst (caddr v-form)
43: b-body (cdddr v-form))
44:
45: (d-scanfordecls b-body)
46:
47: ; push value of init forms on stack
48: (d-pushargs (mapcar '(lambda (x)
49: (if (atom x)
50: then nil ; no init form => nil
51: else (cadr x)))
52: b-vrbls))
53:
54: ; now bind to the variables in the vrbls form
55: (d-bindlamb (mapcar '(lambda (x)
56: (if (atom x) then x
57: else (car x)))
58: b-vrbls))
59:
60: ; search through body for all labels and assign them gensymed labels
61: (push (cons (d-genlab)
62: (do ((ll b-body (cdr ll))
63: (res))
64: ((null ll) res)
65: (if (and (car ll) (symbolp (car ll)))
66: then (Push res
67: (cons (car ll) (d-genlab))))))
68: g-labs)
69:
70: ; if the test is non nil, we do the test
71: ; another strange thing, a test form of (pred) will not return
72: ; the value of pred if it is not nil! it will return nil -- in this
73: ; way, it is not like a cond clause
74: (d-clearreg)
75: (if b-tst then (e-label chklab)
76: (let ((g-cc (cons nil bodylab)) g-loc g-ret)
77: (d-exp (car b-tst))) ; eval test
78: ; if false, do body
79: (if (cdr b-tst)
80: then (setq oldreguse (copy g-reguse))
81: (d-exps (cdr b-tst))
82: (setq g-reguse oldreguse)
83: else (d-move 'Nil 'reg))
84: (e-goto (caar g-labs)) ; leave do
85: (e-label bodylab)) ; begin body
86:
87: ; process body
88: (do ((ll b-body (cdr ll))
89: (g-cc) (g-loc)(g-ret))
90: ((null ll))
91: (if (or (null (car ll)) (not (symbolp (car ll))))
92: then (d-exp (car ll))
93: else (e-label (cdr (assoc (car ll) (cdar g-labs))))
94: (d-clearreg)))
95:
96: (if b-tst
97: then ; determine all repeat forms which must be
98: ; evaluated, and all the variables affected.
99: ; store the results in x-repeat and x-vrbs
100: ; if there is just one repeat form, we calculate
101: ; its value directly into where it is stored,
102: ; if there is more than one, we stack them
103: ; and then store them back at once.
104: (do ((ll b-vrbls (cdr ll)))
105: ((null ll))
106: (if (and (dtpr (car ll)) (cddar ll))
107: then (Push x-repeat (caddar ll))
108: (Push x-vrbs (caar ll))))
109: (if x-vrbs
110: then (if (null (cdr x-vrbs)) ; if just one repeat
111: then (let ((g-loc (d-locv (car x-vrbs)))
112: (g-cc nil))
113: (d-exp (car x-repeat)))
114: else (setq x-fst (car x-repeat))
115: (d-pushargs (nreverse
116: (cdr x-repeat)))
117: (let ((g-loc (d-locv (car x-vrbs)))
118: (g-cc)
119: (g-ret))
120: (d-exp x-fst))
121: (do ((ll (cdr x-vrbs) (cdr ll)))
122: ((null ll))
123: (d-move 'unstack
124: (d-locv (car ll)))
125: (setq g-locs (cdr g-locs))
126: (decr g-loccnt))))
127: (e-goto chklab))
128:
129: (e-label (caar g-labs)) ; end of do label
130: (d-clearreg)
131: (d-unbind)
132: (setq g-labs (cdr g-labs))))
133:
134: ;--- d-olddo-to-newdo :: map old do to new do
135: ;
136: ; form of old do is (do var tst . body)
137: ; where var is a symbol, not nil
138: ;
139: (defun d-olddo-to-newdo (v-l)
140: `(do ((,(car v-l) ,(cadr v-l) ,(caddr v-l)))
141: (,(cadddr v-l))
142: ,@(cddddr v-l)))
143:
144: ;--- cc-dtpr :: check for dtprness
145: ;
146: (defun cc-dtpr nil
147: (d-typesimp (cadr v-form) #.(immed-const 3)))
148:
149: ;--- cc-eq :: compile an "eq" expression
150: ;
151: (defun cc-eq nil
152: (let ((arg1 (cadr v-form))
153: (arg2 (caddr v-form))
154: arg1loc
155: arg2loc)
156: (if (setq arg2loc (d-simple arg2))
157: then (if (setq arg1loc (d-simple arg1))
158: then ; eq <simple> <simple>
159: (d-cmp arg1loc arg2loc)
160: else ; eq <nonsimple> <simple>
161: (let ((g-loc 'reg) ; put <nonsimple> in reg
162: ; must rebind because
163: ; cc->& may have modified
164: (g-trueop #+for-vax 'jneq #+for-68k 'jne)
165: (g-falseop #+for-vax 'jeql #+for-68k 'jeq)
166: g-cc
167: g-ret)
168: (d-exp arg1))
169: (d-cmp 'reg arg2loc))
170: else ; since second is nonsimple, must stack first
171: ; arg out of harms way
172: (let ((g-loc 'stack)
173: (g-trueop #+for-vax 'jneq #+for-68k 'jne)
174: (g-falseop #+for-vax 'jeql #+for-68k 'jeq)
175: g-cc
176: g-ret)
177: (d-exp arg1)
178: (push nil g-locs)
179: (incr g-loccnt)
180: (setq g-loc 'reg) ; second arg to reg
181: (d-exp arg2))
182: (d-cmp 'unstack 'reg)
183: (setq g-locs (cdr g-locs))
184: (decr g-loccnt)))
185: (d-invert))
186:
187: ;--- cc-equal :: compile `equal'
188: ;
189: (defun cc-equal nil
190: (let ((lab1 (d-genlab))
191: (lab11 (d-genlab))
192: lab2)
193: (d-pushargs (cdr v-form))
194: (e-cmp '(-8 #.np-reg) '(-4 #.np-reg))
195: (e-gotonil lab1)
196: (d-calltran 'equal '2) ; not eq, try equal.
197: (d-clearreg)
198: #+for-vax (e-tst (e-cvt 'reg))
199: #+for-68k (e-cmpnil (e-cvt 'reg))
200: (e-gotot lab11)
201: (if g-loc then (d-move 'Nil g-loc))
202: (if (cdr g-cc) then (e-goto (cdr g-cc))
203: else (e-goto (setq lab2 (d-genlab))))
204: (e-writel lab1)
205: (e-dropnp 2)
206: (e-writel lab11)
207: (if g-loc then (d-move 'T g-loc))
208: (if (car g-cc) then (e-goto (car g-cc)))
209: (if lab2 then (e-writel lab2))
210: (setq g-locs (cddr g-locs))
211: (setq g-loccnt (- g-loccnt 2))))
212:
213: ;--- c-errset :: compile an errset expression
214: ;
215: ; the errset has this form: (errset 'value ['tag])
216: ; where tag defaults to t.
217: ;
218: (defun c-errset nil
219: (let ((g-loc 'reg)
220: (g-cc nil)
221: (g-ret nil)
222: (finlab (d-genlab))
223: (beglab (d-genlab)))
224: (d-exp (if (cddr v-form) then (caddr v-form) else t))
225: (d-pushframe #.F_CATCH (d-loclit 'ER%all nil) 'reg)
226: (push nil g-labs) ; disallow labels
227: ; If retval is non zero then an error has throw us here so we
228: ; must recover the value thrown (from _lispretval) and leave
229: ; If retval is zero then we shoud calculate the expression
230: ; into r0 and put a cons cell around it
231: (e-tst '_retval)
232: (e-write2 #+for-vax 'jeql #+for-68k 'jeq beglab)
233: (e-move '_lispretval (e-cvt 'reg))
234: (e-write2 #+for-vax 'jbr #+for-68k 'jra finlab)
235: (e-label beglab)
236: (let ((g-loc 'stack)
237: (g-cc nil))
238: (d-exp (cadr v-form)))
239: (d-move 'Nil 'stack) ; haven't updated g-loc, g-loccnt but it
240: ; shouldn't hurt (famous last words)
241: (e-quick-call '_qcons)
242: (e-label finlab)
243: (d-popframe)
244: (unpush g-locs) ; remove (catcherrset . 0)
245: (unpush g-labs) ; remove nil
246: (d-clearreg)))
247:
248: ;--- cm-fixnum-cxr :: open code a fixnum-cxr expression.
249: ;
250: ; fixnum-cxr is a compile only hacky function which accesses an element
251: ; of a fixnum space and boxes the resulting fixnum. It can be used
252: ; for rapid access to user defined structures.
253: ;
254: (defun cm-fixnum-cxr ()
255: `(internal-fixnum-box (cxr ,@(cdr v-form))))
256:
257: (defun c-internal-fixnum-box ()
258: (let ((g-cc nil)
259: (g-ret nil)
260: (g-loc '#.fixnum-reg))
261: #+for-68k (d-regused '#.fixnum-reg)
262: (d-exp (cadr v-form))
263: (e-call-qnewint)))
264:
265: ;--- cc-offset-cxr
266: ; return a pointer to the address of the object instead of the object.
267: ;
268: (defun cc-offset-cxr nil
269: (d-supercxr nil t))
270:
271: ;--- cc-fixp :: check for a fixnum or bignum
272: ;
273: (defun cc-fixp nil
274: (d-typecmplx (cadr v-form)
275: '#.(immed-const (plus 1_2 1_9))))
276:
277: ;--- cc-floatp :: check for a flonum
278: ;
279: (defun cc-floatp nil
280: (d-typesimp (cadr v-form) #.(immed-const 4)))
281:
282: ;--- c-funcall :: compile a funcall
283: ;
284: ; we open code a funcall the resulting object is a compiled lambda.
285: ; We don't open code nlambda and macro funcalls since they are
286: ; rarely used and it would waste space to check for them
287: (defun c-funcall nil
288: (if (null (cdr v-form))
289: then (comp-err "funcall requires at least one argument " v-form))
290: (let ((g-locs g-locs)
291: (g-loccnt g-loccnt)
292: (args (length (cdr v-form)))
293: (g-loc nil)
294: (g-ret nil)
295: (g-cc nil))
296: (d-pushargs (cdr v-form))
297: (rplaca (nthcdr (1- args) g-locs) 'funcallfcn)
298:
299: (d-exp '(cond ((and (symbolp funcallfcn)
300: (getd funcallfcn))
301: (setq funcallfcn (getd funcallfcn)))))
302:
303: (d-exp `(cond ((and (bcdp funcallfcn) (eq 'lambda (getdisc funcallfcn)))
304: (Internal-bcdcall ,args t))
305: (t (Internal-bcdcall ,args nil))))))
306:
307: ;--- c-Internal-bcdcall
308: ; this is a compiler internal function call. when this occurs, there
309: ; are argnum objects stacked, the first of which is a function name
310: ; or bcd object. If dobcdcall is t then we want to do a bcdcall of
311: ; the first object stacked. If it is not true then we want to
312: ; call the interpreter funcall function to handle it.
313: ;
314: (defun c-Internal-bcdcall nil
315: (let ((argnum (cadr v-form))
316: (dobcdcall (caddr v-form)))
317: (cond (dobcdcall (d-bcdcall argnum))
318: (t (d-calltran 'funcall argnum)))))
319:
320: ;--- cc-function :: compile a function function
321: ;
322: ; function is an nlambda, which the interpreter treats as 'quote'
323: ; If the argument is a lambda expression, then Liszt will generate
324: ; a new function and generate code to return the name of
325: ; that function. If the argument is a symbol, then 'symbol
326: ; is compiled. It would probably be better to return the function
327: ; cell of the symbol, but Maclisp returns the symbol and it
328: ; would cause compatibility problems.
329: ;
330: (defun cc-function nil
331: (if (or (null (cdr v-form))
332: (cddr v-form))
333: then (comp-err "Wrong number of arguments to 'function': " v-form))
334: (let ((arg (cadr v-form)))
335: (if (symbolp arg)
336: then (d-exp `',arg)
337: elseif (and (dtpr arg)
338: (memq (car arg) '(lambda nlambda lexpr)))
339: then (let ((newname (concat "in-line-lambda:"
340: (setq in-line-lambda-number
341: (add1 in-line-lambda-number)))))
342: (Push liszt-process-forms
343: `(def ,newname ,arg))
344: (d-exp `',newname))
345: else (comp-err "Illegal argument to 'function': " v-form))))
346:
347: ;--- c-get :: do a get from the prop list
348: ;
349: (defun c-get nil
350: (if (not (eq 2 (length (cdr v-form))))
351: then (comp-err "Wrong number of args to get " v-form))
352: (d-pushargs (cdr v-form)) ; there better be 2 args
353: (e-quick-call '_qget)
354: (d-clearreg)
355: (setq g-locs (cddr g-locs))
356: (setq g-loccnt (- g-loccnt 2)))
357:
358: ;--- cm-getaccess :: compile a getaccess instruction
359: ;
360: (defun cm-getaccess nil `(cdr ,(cadr v-form)))
361:
362: ;--- cm-getaux :: compile a getaux instruction
363: ;
364: (defun cm-getaux nil `(car ,(cadr v-form)))
365:
366: ;--- cm-getd :: compile a getd instruction
367: ;
368: ; the getd function is open coded to look in the third part of a symbol
369: ; cell
370: ;
371: (defun cm-getd nil `(cxr 2 ,(cadr v-form)))
372:
373: ;--- cm-getdata :: compile a getdata instruction
374: ;
375: ; the getdata function is open coded to look in the third part of an
376: ; array header.
377: (defun cm-getdata nil `(cxr 2 ,(cadr v-form)))
378:
379: ;--- cm-getdisc :: compile a getdisc expression
380: ; getdisc accessed the discipline field of a binary object.
381: ;
382: (defun cm-getdisc nil `(cxr 1 ,(cadr v-form)))
383:
384: ;--- c-go :: compile a "go" expression
385: ;
386: ; we only compile the (go symbol)type expression, we do not
387: ; allow symbol to be anything by a non null symbol.
388: ;
389: (defun c-go nil
390: ; find number of frames we have to go down to get to the label
391: (do ((labs g-labs (cdr labs))
392: (locs g-locs)
393: (locals 0)
394: (specials 0)
395: (catcherrset 0)
396: (label))
397: ((null labs)
398: (comp-err "go label not found for expression: " (or v-form)))
399:
400: (if (car labs) ; if we have a set of labels to look at...
401: then (if (setq label
402: (do ((lbs (cdar labs) (cdr lbs)))
403: ((null lbs))
404: (if (eq (caar lbs) (cadr v-form))
405: then (return (cdar lbs)))))
406: then (if (not (eq labs g-labs))
407: then (comp-note g-fname ": non local go used : "
408: (or v-form)))
409: ; three stack to pop: namestack, bindstack
410: ; and execution stack
411: (e-pop locals)
412: (if (greaterp specials 0)
413: then (e-unshallowbind specials))
414: (if (greaterp catcherrset 0)
415: then (comp-note g-fname
416: ": Go through a catch or errset "
417: v-form)
418: (do ((i 0 (1+ i)))
419: ((=& catcherrset i))
420: (d-popframe)))
421: (e-goto label)
422: (return)))
423: ; tally all locals, specials and catcherrsets used in this frame
424: (do ()
425: ((dtpr (car locs))
426: (if (eq 'catcherrset (caar locs))
427: then (incr catcherrset)
428: elseif (eq 'progv (caar locs))
429: then (comp-err "Attempt to 'go' through a progv"))
430: (setq specials (+ specials (cdar locs))
431: locs (cdr locs)))
432: (setq locs (cdr locs))
433: (incr locals))))
434:
435: ;--- cc-ignore :: just ignore this code
436: ;
437: (defun cc-ignore nil
438: nil)
439:
440: ;--- c-lambexp :: compile a lambda expression
441: ;
442: (defun c-lambexp nil
443: (let ((g-loc (if (or g-loc g-cc) then 'reg))
444: (g-cc nil)
445: (g-locs (cons (cons 'lambda 0) g-locs))
446: (g-labs (cons nil g-labs)))
447: (d-pushargs (cdr v-form)) ; then push vals
448: (d-lambbody (car v-form))
449: (d-clearreg)))
450:
451: ;--- d-lambbody :: do a lambda body
452: ; - body : body of lambda expression, eg (lambda () dld)
453: ;
454: (defun d-lambbody (body)
455: (let ((g-decls g-decls))
456: (d-scanfordecls (cddr body)) ; look for declarations
457: (d-bindlamb (cadr body)) ; bind locals
458: (d-clearreg)
459: (d-exp (do ((ll (cddr body) (cdr ll))
460: (g-loc)
461: (g-cc)
462: (g-ret))
463: ((null (cdr ll)) (car ll))
464: (d-exp (car ll))))
465:
466: (d-unbind))) ; unbind this frame
467:
468: ;--- d-bindlamb :: bind variables in lambda list
469: ; - vrbs : list of lambda variables, may include nil meaning ignore
470: ;
471: (defun d-bindlamb (vrbs)
472: (let ((res (d-bindlrec (reverse vrbs) g-locs 0 g-loccnt)))
473: (if res then (e-setupbind)
474: (mapc '(lambda (vrb) (e-shallowbind (car vrb) (cdr vrb)))
475: res)
476: (e-unsetupbind))))
477:
478: ;--- d-bindlrec :: recusive routine to bind lambda variables
479: ; - vrb : list of variables yet to bind
480: ; - locs : current location in g-loc
481: ; - specs : number of specials seen so far
482: ; - lev : how far up from the bottom of stack we are.
483: ; returns: list of elements, one for each special, of this form:
484: ; (<specialvrbname> stack <n>)
485: ; where specialvrbname is the name of the special variable, and n is
486: ; the distance from the top of the stack where its initial value is
487: ; located
488: ; also: puts the names of the local variables in the g-locs list, as well
489: ; as placing the number of special variables in the lambda header.
490: ;
491: (defun d-bindlrec (vrb locs specs lev)
492: (if vrb
493: then (let ((spcflg (d-specialp (car vrb)))
494: retv)
495: (if spcflg then (setq specs (1+ specs)))
496:
497: (if (cdr vrb) ; if more vrbls to go ...
498: then (setq retv (d-bindlrec (cdr vrb)
499: (cdr locs)
500: specs
501: (1- lev)))
502: else (rplacd (cadr locs)
503: specs)) ; else fix up lambda hdr
504:
505: (if (not spcflg) then (rplaca locs (car vrb))
506: else (Push retv `(,(car vrb) stack ,lev)))
507:
508: retv)))
509:
510: ;--- d-scanfordecls
511: ; forms - the body of a lambda, prog or do.
512: ; we look down the form for 'declare' forms. They should be at the
513: ; beginning, but there are macros which may unintentionally put forms
514: ; in front of user written forms. Thus we check a little further than
515: ; the first form.
516: (defun d-scanfordecls (forms)
517: ; look for declarations in the first few forms
518: (do ((count 3 (1- count)))
519: ((= 0 count))
520: (cond ((and (dtpr (car forms))
521: (eq 'declare (caar forms))
522: (apply 'liszt-declare (cdar forms)))))
523: (setq forms (cdr forms))))
524:
525: ;--- c-list :: compile a list expression
526: ;
527: ; this is compiled as a bunch of conses with a nil pushed on the
528: ; top for good measure
529: ;
530: (defun c-list nil
531: (prog (nargs)
532: (setq nargs (length (cdr v-form)))
533: (makecomment '(list expression))
534: (if (zerop nargs)
535: then (d-move 'Nil 'reg) ; (list) ==> nil
536: (return))
537: (d-pushargs (cdr v-form))
538: #+for-vax (e-write2 'clrl '#.np-plus) ; stack one nil
539: #+for-68k (L-push (e-cvt 'Nil))
540:
541: ; now do the consing
542: (do ((i (max 1 nargs) (1- i)))
543: ((zerop i))
544: (e-quick-call '_qcons)
545: (d-clearreg)
546: (if (> i 1) then (L-push (e-cvt 'reg))))
547:
548: (setq g-locs (nthcdr nargs g-locs)
549: g-loccnt (- g-loccnt nargs))))
550:
551: ;--- d-mapconvert - access : function to access parts of lists
552: ; - join : function to join results
553: ; - resu : function to apply to result
554: ; - form : mapping form
555: ; This function converts maps to an equivalent do form.
556: ;
557: ; in this function, the variable vrbls contains a list of forms, one form
558: ; per list we are mapping over. The form of the form is
559: ; (dummyvariable realarg (cdr dummyvariable))
560: ; realarg may be surrounded by (setq <variable which holds result> realarg)
561: ; in the case that the result is the list to be mapped over (this only occurs
562: ; with the function mapc).
563: ;
564: (defun d-mapconvert (access join resu form )
565: (prog (vrbls finvar acc accform compform
566: tmp testform tempvar lastvar)
567:
568: (setq finvar (gensym 'X) ; holds result
569:
570: vrbls
571: (reverse
572: (maplist '(lambda (arg)
573: ((lambda (temp)
574: (cond ((or resu (cdr arg))
575: `(,temp ,(car arg)
576: (cdr ,temp)))
577: (t `(,temp
578: (setq ,finvar
579: ,(car arg))
580: (cdr ,temp)))))
581: (gensym 'X)))
582: (reverse (cdr form))))
583:
584: ; the access form will either be nil or car. If it is
585: ; nil, then we are doing something like a maplist,
586: ; if the access form is car, then we are doing something
587: ; like a mapcar.
588: acc (mapcar '(lambda (tem)
589: (cond (access `(,access ,(car tem)))
590: (t (car tem))))
591: vrbls)
592:
593: accform (cond ((or (atom (setq tmp (car form)))
594: (null (setq tmp (d-macroexpand tmp)))
595: (not (member (car tmp) '(quote function))))
596: `(funcall ,tmp ,@acc))
597: (t `(,(cadr tmp) ,@acc)))
598:
599: ; the testform checks if any of the lists we are mapping
600: ; over is nil, in which case we quit.
601: testform (cond ((null (cdr vrbls)) `(null ,(caar vrbls)))
602: (t `(or ,@(mapcar '(lambda (x)
603: `(null ,(car x)))
604: vrbls)))))
605:
606: ; in the case of mapcans and mapcons, you need two
607: ; extra variables to simulate the nconc.
608: ; testvar gets intermediate results and lastvar
609: ; points to then end of the list
610: (if (eq join 'nconc)
611: then (setq tempvar (gensym 'X)
612: lastvar (gensym 'X)
613: vrbls `((,tempvar) (,lastvar) ,@vrbls)))
614:
615: (return
616: `((lambda
617: (,finvar)
618: (liszt-internal-do
619: ( ,@vrbls)
620: (,testform)
621: ,(cond ((eq join 'nconc)
622: `(cond ((setq ,tempvar ,accform)
623: (cond (,lastvar
624: (liszt-internal-do
625: ()
626: ((null (cdr ,lastvar)))
627: (setq ,lastvar
628: (cdr ,lastvar)))
629: (rplacd ,lastvar ,tempvar))
630: (t (setq ,finvar
631: (setq ,lastvar
632: ,tempvar)))))))
633: (join `(setq ,finvar (,join ,accform ,finvar)))
634: (t accform)))
635: ,(cond ((eq resu 'identity) finvar)
636: (resu `(,resu ,finvar))
637: (t finvar)))
638: nil ))))
639:
640: ; apply to successive elements, return second arg
641: (defun cm-mapc nil
642: (d-mapconvert 'car nil nil (cdr v-form)))
643:
644: ; apply to successive elements, return list of results
645: (defun cm-mapcar nil
646: (d-mapconvert 'car 'cons 'nreverse (cdr v-form)))
647:
648: ; apply to successive elements, returned nconc of results
649: (defun cm-mapcan nil
650: (d-mapconvert 'car 'nconc 'identity (cdr v-form)))
651:
652: ; apply to successive sublists, return second arg
653: (defun cm-map nil
654: (d-mapconvert nil nil nil (cdr v-form)))
655:
656: ; apply to successive sublists, return list of results
657: (defun cm-maplist nil
658: (d-mapconvert nil 'cons 'reverse (cdr v-form)))
659:
660: ; apply to successive sublists, return nconc of results
661: (defun cm-mapcon nil
662: (d-mapconvert nil 'nconc 'identity (cdr v-form)))
663:
664: ;--- cc-memq :: compile a memq expression
665: ;
666: #+for-vax
667: (defun cc-memq nil
668: (let ((loc1 (d-simple (cadr v-form)))
669: (loc2 (d-simple (caddr v-form)))
670: looploc finlab)
671: (if loc2
672: then (d-clearreg 'r1)
673: (if loc1
674: then (d-move loc1 'r1)
675: else (let ((g-loc 'r1)
676: g-cc
677: g-ret)
678: (d-exp (cadr v-form))))
679: (d-move loc2 'reg)
680: else (let ((g-loc 'stack)
681: g-cc
682: g-ret)
683: (d-exp (cadr v-form)))
684: (push nil g-locs)
685: (incr g-loccnt)
686: (let ((g-loc 'reg)
687: g-cc
688: g-ret)
689: (d-exp (caddr v-form)))
690: (L-pop 'r1)
691: (d-clearreg 'r1)
692: (unpush g-locs)
693: (decr g-loccnt))
694: ; now set up the jump addresses
695: (if (null g-loc)
696: then (setq loc1 (if (car g-cc) thenret else (d-genlab))
697: loc2 (if (cdr g-cc) thenret else (d-genlab)))
698: else (setq loc1 (d-genlab)
699: loc2 (d-genlab)))
700:
701: (setq looploc (d-genlab))
702: (e-tst 'r0)
703: (e-write2 'jeql loc2)
704: (e-label looploc)
705: (e-cmp 'r1 '(4 r0))
706: (e-write2 'jeql loc1)
707: (e-move '(0 r0) 'r0)
708: (e-write2 'jneq looploc)
709: (if g-loc
710: then (e-label loc2) ; nil result
711: (d-move 'reg g-loc)
712: (if (cdr g-cc)
713: then (e-goto (cdr g-cc))
714: else (e-goto (setq finlab (d-genlab))))
715: else (if (cdr g-cc)
716: then (e-goto (cdr g-cc))
717: else (e-label loc2)))
718: (if g-loc
719: then (e-label loc1) ; non nil result
720: (d-move 'reg g-loc)
721: (if (car g-cc) then (e-goto (car g-cc)))
722: else (if (null (car g-cc)) then (e-label loc1)))
723: (if finlab then (e-label finlab))))
724:
725: #+for-68k
726: (defun cc-memq nil
727: (let ((loc1 (d-simple (cadr v-form)))
728: (loc2 (d-simple (caddr v-form)))
729: looploc finlab
730: (tmp-data-reg (d-alloc-register 'd nil)))
731: (d-clearreg tmp-data-reg)
732: (d-clearreg 'a0)
733: (if loc2
734: then (if loc1
735: then (d-move loc1 tmp-data-reg)
736: else (let ((g-loc tmp-data-reg)
737: g-cc
738: g-ret)
739: (d-exp (cadr v-form))))
740: (d-move loc2 'reg)
741: else (let ((g-loc 'stack)
742: g-cc
743: g-ret)
744: (d-exp (cadr v-form)))
745: (push nil g-locs)
746: (incr g-loccnt)
747: (let ((g-loc 'reg)
748: g-cc
749: g-ret)
750: (d-exp (caddr v-form)))
751: (L-pop tmp-data-reg)
752: (unpush g-locs)
753: (decr g-loccnt))
754: ; now set up the jump addresses
755: (if (null g-loc)
756: then (setq loc1 (if (car g-cc) thenret else (d-genlab))
757: loc2 (if (cdr g-cc) thenret else (d-genlab)))
758: else (setq loc1 (d-genlab)
759: loc2 (d-genlab)))
760: (setq looploc (d-genlab))
761: (e-cmpnil 'd0)
762: (e-write2 'jeq loc2)
763: (e-move 'd0 'a0)
764: (e-label looploc)
765: (e-cmp tmp-data-reg '(4 a0))
766: (e-write2 'jeq loc1)
767: (e-move '(0 a0) 'a0)
768: (e-cmpnil 'a0)
769: (e-write2 'jne looploc)
770: (e-move 'a0 'd0)
771: (if g-loc
772: then (e-label loc2) ; nil result
773: (d-move 'reg g-loc)
774: (if (cdr g-cc)
775: then (e-goto (cdr g-cc))
776: else (e-goto (setq finlab (d-genlab))))
777: else (if (cdr g-cc)
778: then (e-goto (cdr g-cc))
779: else (e-label loc2)))
780: (if g-loc
781: then (e-label loc1) ; non nil result
782: (d-move 'a0 g-loc) ;a0 was cdr of non-nil result
783: (if (car g-cc) then (e-goto (car g-cc)))
784: else (if (null (car g-cc)) then (e-label loc1)))
785: (if finlab then (e-label finlab))))
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