aboutsummaryrefslogtreecommitdiffstats
path: root/scm.h
blob: 55be55a400e4c9652377ebc2789d9a1bb93db1ea (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
/* Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this software; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * As a special exception, the Free Software Foundation gives permission
 * for additional uses of the text contained in its release of GUILE.
 *
 * The exception is that, if you link the GUILE library with other files
 * to produce an executable, this does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * Your use of that executable is in no way restricted on account of
 * linking the GUILE library code into it.
 *
 * This exception does not however invalidate any other reasons why
 * the executable file might be covered by the GNU General Public License.
 *
 * This exception applies only to the code released by the
 * Free Software Foundation under the name GUILE.  If you copy
 * code from other Free Software Foundation releases into a copy of
 * GUILE, as the General Public License permits, the exception does
 * not apply to the code that you add in this way.  To avoid misleading
 * anyone as to the status of such modified files, you must delete
 * this exception notice from them.
 *
 * If you write modifications of your own for GUILE, it is your choice
 * whether to permit this exception to apply to your modifications.
 * If you do not wish that, delete this exception notice.
 */

/* "scm.h" SCM data types and external functions. */

#ifdef __cplusplus
extern "C" {
#endif

#ifdef hpux
# ifndef __GNUC__
#  define const /**/
# endif
#endif

typedef long SCM;
typedef struct {SCM car, cdr;} cell;
typedef struct {long sname;SCM (*cproc)();} subr;
typedef struct {long sname;double (*dproc)();} dsubr;
typedef struct {const char *string;SCM (*cproc)();} iproc;

#include <stdio.h>
#include "scmfig.h"

#ifdef USE_ANSI_PROTOTYPES
# define P(s) s
#else
# define P(s) ()
#endif

#ifndef STDC_HEADERS
	int isatty P((int));
#endif

typedef struct {
  SCM	(*mark)P((SCM));
  sizet	(*free)P((CELLPTR));
  int	(*print)P((SCM exp, SCM port, int writing));
  SCM	(*equalp)P((SCM, SCM));
} smobfuns;

typedef struct {
  SCM	(*mark)P((SCM ptr));
  int	(*free)P((FILE *p));
  int	(*print)P((SCM exp, SCM port, int writing));
  SCM	(*equalp)P((SCM, SCM));
  int	(*fputc)P((int c, FILE *p));
  int	(*fputs)P((char *s, FILE *p));
  sizet	(*fwrite)P((char *s, sizet siz, sizet num, FILE *p));
  int	(*fflush)P((FILE *stream));
  int	(*fgetc)P((FILE *p));
  int	(*fclose)P((FILE *p));
} ptobfuns;

typedef struct {
  SCM v;
  sizet base;
} array;
typedef struct {
  long lbnd;
  long ubnd;
  long inc;
} array_dim;

#ifdef FLOATS
typedef struct {char *string;double (*cproc)P((double));} dblproc;
# ifdef SINGLES
#  ifdef CDR_DOUBLES
typedef struct {SCM type;double num;} flo;
#  else
typedef struct {SCM type;float num;} flo;
#  endif
# endif
typedef struct {SCM type;double *real;} dbl;
#endif

#define IMP(x) (6 & (int)(x))
#define NIMP(x) (!IMP(x))

#define INUMP(x) (2 & (int)(x))
#define NINUMP(x) (!INUMP(x))
#define INUM0 ((SCM) 2)
#define ICHRP(x) ((0xff & (int)(x))==0xf4)
#define ICHR(x) ((unsigned char)((x)>>8))
#define MAKICHR(x) (((x)<<8)+0xf4L)

#define ILOCP(n) ((0xff & (int)(n))==0xfc)
#define ILOC00	(0x000000fcL)
#define IDINC	(0x00100000L)
#define ICDR	(0x00080000L)
#define IFRINC	(0x00000100L)
#define IDSTMSK	(-IDINC)
#define MAKILOC(if, id) (ILOC00 + (((long)id)<<20) + (((long)if)<<8))
#define IFRAME(n) ((int)((ICDR-IFRINC)>>8) & ((int)(n)>>8))
#define IDIST(n) (((unsigned long)(n))>>20)
#define ICDRP(n) (ICDR & (n))

/* ISYMP tests for ISPCSYM and ISYM */
#define ISYMP(n) ((0x187 & (int)(n))==4)
/* IFLAGP tests for ISPCSYM, ISYM and IFLAG */
#define IFLAGP(n) ((0x87 & (int)(n))==4)
#define ISYMNUM(n) ((int)((n)>>9))
#define ISYMCHARS(n) (isymnames[ISYMNUM(n)])
#define MAKSPCSYM(n) (((n)<<9)+((n)<<3)+4L)
#define MAKISYM(n) (((n)<<9)+0x74L)
#define MAKIFLAG(n) (((n)<<9)+0x174L)

extern char *isymnames[];
#define NUM_ISPCSYM 14
#define IM_AND MAKSPCSYM(0)
#define IM_BEGIN MAKSPCSYM(1)
#define IM_CASE MAKSPCSYM(2)
#define IM_COND MAKSPCSYM(3)
#define IM_DO MAKSPCSYM(4)
#define IM_IF MAKSPCSYM(5)
#define IM_LAMBDA MAKSPCSYM(6)
#define IM_LET MAKSPCSYM(7)
#define IM_LETSTAR MAKSPCSYM(8)
#define IM_LETREC MAKSPCSYM(9)
#define IM_OR MAKSPCSYM(10)
#define IM_QUOTE MAKSPCSYM(11)
#define IM_SET MAKSPCSYM(12)
#define IM_DEFINE MAKSPCSYM(13)

#define s_and (ISYMCHARS(IM_AND)+2)
#define s_begin (ISYMCHARS(IM_BEGIN)+2)
#define s_case (ISYMCHARS(IM_CASE)+2)
#define s_cond (ISYMCHARS(IM_COND)+2)
#define s_do (ISYMCHARS(IM_DO)+2)
#define s_if (ISYMCHARS(IM_IF)+2)
#define s_lambda (ISYMCHARS(IM_LAMBDA)+2)
#define s_let (ISYMCHARS(IM_LET)+2)
#define s_letstar (ISYMCHARS(IM_LETSTAR)+2)
#define s_letrec (ISYMCHARS(IM_LETREC)+2)
#define s_or (ISYMCHARS(IM_OR)+2)
#define s_quote (ISYMCHARS(IM_QUOTE)+2)
#define s_set (ISYMCHARS(IM_SET)+2)
#define s_define (ISYMCHARS(IM_DEFINE)+2)
#define s_delay (ISYMCHARS(IM_DELAY)+2)
#define s_quasiquote (ISYMCHARS(IM_QUASIQUOTE)+2)

extern SCM i_dot, i_quote, i_quasiquote, i_unquote, i_uq_splicing;
#define s_apply (ISYMCHARS(IM_APPLY)+2)

/* each symbol defined here must have a unique number which */
 /* corresponds to it's position in isymnames[] in sys.c */
#define IM_APPLY MAKISYM(14)
#define IM_CONT MAKISYM(15)
#define IM_FARLOC_CAR MAKISYM(16)
#define IM_FARLOC_CDR MAKISYM(17)
#define IM_DELAY MAKISYM(18)
#define IM_QUASIQUOTE MAKISYM(19)
#define IM_UNQUOTE MAKISYM(20)
#define IM_UQ_SPLICING MAKISYM(21)
#define IM_ELSE MAKISYM(22)
#define IM_ARROW MAKISYM(23)

#define NUM_ISYMS 24

#define BOOL_F MAKIFLAG(NUM_ISYMS+0)
#define BOOL_T MAKIFLAG(NUM_ISYMS+1)
#define UNDEFINED MAKIFLAG(NUM_ISYMS+2)
#define EOF_VAL MAKIFLAG(NUM_ISYMS+3)
#ifdef SICP
# define EOL BOOL_F
#else
# define EOL MAKIFLAG(NUM_ISYMS+4)
#endif
#define UNSPECIFIED MAKIFLAG(NUM_ISYMS+5)

/* Now some unnamed flags used as magic cookies by repl_driver. */
/* Argument n can range from -4 to 16 */
#ifdef SHORT_INT
# define COOKIE(n) (n)
# define UNCOOK(f) (f)
#else
# define COOKIE(n) MAKIFLAG(NUM_ISYMS+6+4+n)
# define UNCOOK(f) (ISYMNUM(f)-(NUM_ISYMS+6+4))
#endif

#define FALSEP(x) (BOOL_F==(x))
#define NFALSEP(x) (BOOL_F != (x))
/* BOOL_NOT returns the other boolean.  The order of ^s here is
   important for Borland C++. */
#define BOOL_NOT(x)  ((x) ^ (BOOL_T ^ BOOL_F))
#define NULLP(x) (EOL==(x))
#define NNULLP(x) (EOL != (x))
#define UNBNDP(x) (UNDEFINED==(x))
#define CELLP(x) (!NCELLP(x))
#define NCELLP(x) ((sizeof(cell)-1) & (int)(x))

#define GCMARKP(x) (1 & (int)CDR(x))
#define GC8MARKP(x) (0x80 & (int)CAR(x))
#define SETGCMARK(x) CDR(x) |= 1;
#define CLRGCMARK(x) CDR(x) &= ~1L;
#define SETGC8MARK(x) CAR(x) |= 0x80;
#define CLRGC8MARK(x) CAR(x) &= ~0x80L;
#define TYP3(x) (7 & (int)CAR(x))
#define TYP7(x) (0x7f & (int)CAR(x))
#define TYP7S(x) (0x7d & (int)CAR(x))
#define TYP16(x) (0xffff & (int)CAR(x))
#define TYP16S(x) (0xfeff & (int)CAR(x))
#define GCTYP16(x) (0xff7f & (int)CAR(x))

#define NCONSP(x) (1 & (int)CAR(x))
#define CONSP(x) (!NCONSP(x))
#define ECONSP(x) (CONSP(x) || (1==TYP3(x)))
#define NECONSP(x) (NCONSP(x) && (1 != TYP3(x)))

#define CAR(x) (((cell *)(SCM2PTR(x)))->car)
#define CDR(x) (((cell *)(SCM2PTR(x)))->cdr)
#define GCCDR(x) (~1L & CDR(x))
#define SETCDR(x, v) CDR(x) = (SCM)(v)

#define CLOSUREP(x) (TYP3(x)==tc3_closure)
#define CODE(x) (CAR(x)-tc3_closure)
#define SETCODE(x, e) CAR(x) = (e)+tc3_closure
#define ENV(x) CDR(x)

#define PORTP(x) (TYP7(x)==tc7_port)
#define OPPORTP(x) (((0x7f | OPN) & CAR(x))==(tc7_port | OPN))
#define OPINPORTP(x) (((0x7f | OPN | RDNG) & CAR(x))==(tc7_port | OPN | RDNG))
#define OPOUTPORTP(x) (((0x7f | OPN | WRTNG) & CAR(x))==(tc7_port | OPN | WRTNG))
#define OPIOPORTP(x) (((0x7f | OPN | RDNG | WRTNG) & CAR(x))==(tc7_port | OPN | RDNG | WRTNG))
#define FPORTP(x) (TYP16S(x)==tc7_port)
#define OPFPORTP(x) (((0xfeff | OPN) & CAR(x))==(tc7_port | OPN))
#define OPINFPORTP(x) (((0xfeff | OPN | RDNG) & CAR(x))==(tc7_port | OPN | RDNG))
#define OPOUTFPORTP(x) (((0xfeff | OPN | WRTNG) & CAR(x))==(tc7_port | OPN | WRTNG))

#define INPORTP(x) (((0x7f | RDNG) & CAR(x))==(tc7_port | RDNG))
#define OUTPORTP(x) (((0x7f | WRTNG) & CAR(x))==(tc7_port | WRTNG))
#define OPENP(x) (OPN & CAR(x))
#define CLOSEDP(x) (!OPENP(x))
#define STREAM(x) ((FILE *)(CDR(x)))
#define SETSTREAM SETCDR
#define CRDYP(port) (CAR(port) & CRDY)
#define CLRDY(port) {CAR(port) &= CUC;}
#define CGETUN(port) ((int)SRS(CAR(port), 22))
#define CUNGET(c, port) {CAR(port) += ((long)c<<22) + CRDY;}

#define tc_socket (tc7_port | OPN)
#define SOCKP(x) (((0x7f | OPN | RDNG | WRTNG) & CAR(x))==(tc_socket))
#define SOCKTYP(x) (CAR(x)>>24)

#define DIRP(x) (NIMP(x) && (TYP16(x)==(tc16_dir)))
#define OPDIRP(x) (NIMP(x) && (CAR(x)==(tc16_dir | OPN)))

#ifdef FLOATS
# define INEXP(x) (TYP16(x)==tc16_flo)
# define CPLXP(x) (CAR(x)==tc_dblc)
# define REAL(x) (*(((dbl *) (SCM2PTR(x)))->real))
# define IMAG(x) (*((double *)(CHARS(x)+sizeof(double))))
/* ((&REAL(x))[1]) */
# ifdef SINGLES
#  define REALP(x) ((~REAL_PART & CAR(x))==tc_flo)
#  define SINGP(x) (CAR(x)==tc_flo)
#  define FLO(x) (((flo *)(SCM2PTR(x)))->num)
#  define REALPART(x) (SINGP(x)?0.0+FLO(x):REAL(x))
# else /* SINGLES */
#  define REALP(x) (CAR(x)==tc_dblr)
#  define REALPART REAL
# endif /* SINGLES */
#endif

#ifdef FLOATS
# define NUMBERP(x) (INUMP(x) || (NIMP(x) && NUMP(x)))
#else
# ifdef BIGDIG
#  define NUMBERP(x) (INUMP(x) || (NIMP(x) && NUMP(x)))
# else
#  define NUMBERP INUMP
# endif
#endif
#define NUMP(x) ((0xfcff & (int)CAR(x))==tc7_smob)
#define BIGP(x) (TYP16S(x)==tc16_bigpos)
#define BIGSIGN(x) (0x0100 & (int)CAR(x))
#define BDIGITS(x) ((BIGDIG *)(CDR(x)))
#define NUMDIGS(x) ((sizet)(CAR(x)>>16))
#define SETNUMDIGS(x, v, t) CAR(x) = (((v)+0L)<<16)+(t)

#define SNAME(x) ((CAR(x)>>8)?(SCM)(heap_org+(CAR(x)>>8)):nullstr)
#define SUBRF(x) (((subr *)(SCM2PTR(x)))->cproc)
#define DSUBRF(x) (((dsubr *)(SCM2PTR(x)))->dproc)
#define CCLO_SUBR(x) (VELTS(x)[0])

#define SYMBOLP(x) (TYP7S(x)==tc7_ssymbol)
#define STRINGP(x) (TYP7(x)==tc7_string)
#define NSTRINGP(x) (!STRINGP(x))
#define VECTORP(x) (TYP7(x)==tc7_vector)
#define NVECTORP(x) (!VECTORP(x))
#define LENGTH(x) (((unsigned long)CAR(x))>>8)
#define LENGTH_MAX (0xffffffL)
#define SETLENGTH(x, v, t) CAR(x) = ((v)<<8)+(t)
#define CHARS(x) ((char *)(CDR(x)))
#define UCHARS(x) ((unsigned char *)(CDR(x)))
#define VELTS(x) ((SCM *)CDR(x))
#define SETCHARS SETCDR
#define SETVELTS SETCDR

extern long tc16_array;
#define ARRAYP(a) (tc16_array==TYP16(a))
#define ARRAY_V(a) (((array *)CDR(a))->v)
/*#define ARRAY_NDIM(x) NUMDIGS(x)*/
#define ARRAY_NDIM(x) ((sizet)(CAR(x)>>17))
#define ARRAY_CONTIGUOUS 0x10000
#define ARRAY_CONTP(x) (ARRAY_CONTIGUOUS & (int)CAR(x))
#define ARRAY_BASE(a) (((array *)CDR(a))->base)
#define ARRAY_DIMS(a) ((array_dim *)(CHARS(a)+sizeof(array)))

#define FREEP(x) (CAR(x)==tc_free_cell)
#define NFREEP(x) (!FREEP(x))

#define SMOBNUM(x) (0x0ff & (CAR(x)>>8));
#define PTOBNUM(x) (0x0ff & (CAR(x)>>8));

#define DIGITS '0':case '1':case '2':case '3':case '4':\
		case '5':case '6':case '7':case '8':case '9'

/* Aggregated types for dispatch in switch statements. */

#define tcs_cons_imcar 2:case 4:case 6:case 10:\
		 case 12:case 14:case 18:case 20:\
		 case 22:case 26:case 28:case 30:\
		 case 34:case 36:case 38:case 42:\
		 case 44:case 46:case 50:case 52:\
		 case 54:case 58:case 60:case 62:\
		 case 66:case 68:case 70:case 74:\
		 case 76:case 78:case 82:case 84:\
		 case 86:case 90:case 92:case 94:\
		 case 98:case 100:case 102:case 106:\
		 case 108:case 110:case 114:case 116:\
		 case 118:case 122:case 124:case 126
#define tcs_cons_nimcar 0:case 8:case 16:case 24:\
		 case 32:case 40:case 48:case 56:\
		 case 64:case 72:case 80:case 88:\
		 case 96:case 104:case 112:case 120
#define tcs_cons_gloc 1:case 9:case 17:case 25:\
		 case 33:case 41:case 49:case 57:\
		 case 65:case 73:case 81:case 89:\
		 case 97:case 105:case 113:case 121

#define tcs_closures   3:case 11:case 19:case 27:\
		 case 35:case 43:case 51:case 59:\
		 case 67:case 75:case 83:case 91:\
		 case 99:case 107:case 115:case 123
#define tcs_subrs tc7_asubr:case tc7_subr_0:case tc7_subr_1:case tc7_cxr:\
	case tc7_subr_3:case tc7_subr_2:case tc7_rpsubr:case tc7_subr_1o:\
	case tc7_subr_2o:case tc7_lsubr_2:case tc7_lsubr
#define tcs_symbols tc7_ssymbol:case tc7_msymbol
#define tcs_bignums tc16_bigpos:case tc16_bigneg

#define tc3_cons	0
#define tc3_cons_gloc	1
#define tc3_closure	3

#define tc7_ssymbol	5
#define tc7_msymbol	7
#define tc7_string	13
#define tc7_vector	15
#define tc7_bvect	21
/* spare 23 */
#define tc7_ivect	29
#define tc7_uvect	31
/* spare 37 39 */
#define tc7_fvect	45
#define tc7_dvect	47
#define tc7_cvect	53
#define tc7_port	55
#define tc7_contin	61
#define tc7_cclo	63

/* spare 69 71 77 79 */
#define tc7_subr_0	85
#define tc7_subr_1	87
#define tc7_cxr		93
#define tc7_subr_3	95
#define tc7_subr_2	101
#define tc7_asubr	103
#define tc7_subr_1o	109
#define tc7_subr_2o	111
#define tc7_lsubr_2	117
#define tc7_lsubr	119
#define tc7_rpsubr	125

#define tc7_smob	127
#define tc_free_cell	127

#define tc16_flo	0x017f
#define tc_flo		0x017fL

#define REAL_PART	(1L<<16)
#define IMAG_PART	(2L<<16)
#define tc_dblr		(tc16_flo|REAL_PART)
#define tc_dblc		(tc16_flo|REAL_PART|IMAG_PART)

#define tc16_bigpos	0x027f
#define tc16_bigneg	0x037f

#define OPN		(1L<<16)
#define RDNG		(2L<<16)
#define WRTNG		(4L<<16)
#define BUF0		(8L<<16)
#define CRDY		(32L<<16)
#define CUC		0x001fffffL

extern sizet numsmob, numptob;
extern smobfuns *smobs;
extern ptobfuns *ptobs;
extern ptobfuns pipob;
#define tc16_fport (tc7_port + 0*256L)
#define tc16_pipe (tc7_port + 1*256L)
#define tc16_strport (tc7_port + 2*256L)
#define tc16_sfport (tc7_port + 3*256L)
extern long tc16_dir;

extern SCM sys_protects[];
#define cur_inp sys_protects[0]
#define cur_outp sys_protects[1]
#define cur_errp sys_protects[2]
#define def_inp sys_protects[3]
#define def_outp sys_protects[4]
#define def_errp sys_protects[5]
#define listofnull sys_protects[6]
#define undefineds sys_protects[7]
#define nullvect sys_protects[8]
#define nullstr sys_protects[9]
#define progargs sys_protects[10]
#define transcript sys_protects[11]
#define rootcont sys_protects[12]
#define dynwinds sys_protects[13]
#define stacktrace sys_protects[14]
#ifdef FLOATS
# define flo0 sys_protects[15]
# define NUM_PROTECTS 16
#else
# define NUM_PROTECTS 15
#endif

/* now for connects between source files */

extern sizet num_finals;
extern void (**finals)P((void));
extern unsigned char upcase[], downcase[];
extern SCM symhash;
extern int symhash_dim;
extern long heap_size;
extern CELLPTR heap_org;
extern SCM freelist;
extern long gc_cells_collected, gc_malloc_collected, gc_ports_collected;
extern long gc_syms_collected;
extern long cells_allocated, lcells_allocated, mallocated, lmallocated;
extern long mtrigger;
extern SCM *loc_loadpath;
extern SCM *loc_errobj;
extern SCM loadport;
extern long linum;
extern int errjmp_bad, ints_disabled, sig_deferred, alrm_deferred;
extern SCM exitval;
extern int cursinit;
extern unsigned int poll_count, tick_count;
extern int dumped;
extern char *execpath;

/* strings used in several source files */

extern char s_read[], s_write[], s_newline[], s_system[];
extern char s_make_string[], s_make_vector[], s_list[], s_op_pipe[];
#define s_string (s_make_string+5)
#define s_vector (s_make_vector+5)
#define s_pipe (s_op_pipe+5)
extern char s_make_sh_array[];
#define s_array (s_make_sh_array+12)
extern char s_ccl[];
#define s_limit (s_ccl+10)
extern char s_close_port[];
#define s_port_type (s_close_port+6)

/* function prototypes */

void	gc_mark P((SCM p));
void	han_sig P((void));
void	han_alrm P((void));
char	*must_malloc P((long len, char *what));
char	*must_realloc P((char *where, long olen, long len, char *what));
void	must_free P((char *obj));
long	ilength P((SCM sx));
SCM	hash P((SCM obj, SCM n));
SCM	hashv P((SCM obj, SCM n));
SCM	hashq P((SCM obj, SCM n));
SCM	obhash P((SCM obj));
SCM	obunhash P((SCM obj));
unsigned long strhash P((unsigned char *str, sizet len, unsigned long n));
unsigned long hasher P((SCM obj, unsigned long n, sizet d));
SCM	repl_driver P((char *initpath));
SCM	lroom P((SCM args));
long	newsmob P((smobfuns *smob));
long	newptob P((ptobfuns *ptob));
void	prinport P((SCM exp, SCM port, char *type));
void	repl P((void));
void	growth_mon P((char *obj, long size, char *units));
void	gc_start P((char *what));
void	gc_end P((void));
void	heap_report P((void));
void	exit_report P((void));
void	stack_report P((void));
void	iprin1 P((SCM exp, SCM port, int writing));
void	intprint P((long n, int radix, SCM port));
void	iprlist P((char *hdr, SCM exp, int tlr, SCM port, int writing));
void	lputc P((int c, SCM port));
void	lputs P((char *s, SCM port));
int	lfwrite P((char *ptr, sizet size, sizet nitems, SCM port));
int	lgetc P((SCM port));
void	lungetc P((int c, SCM port));
char	*grow_tok_buf P((SCM tok_buf));
long	mode_bits P((char *modes));
long	time_in_msec P((long x));
SCM	my_time P((void));
SCM	your_time P((void));
void	init_iprocs P((iproc *subra, int type));
void	init_scm P((int iverbose, int buf0stdin, long init_heap_size));
SCM	scm_init_extensions P((void));
void	ignore_signals P((void));
void	unignore_signals P((void));
void	free_storage P((void));
void	add_feature P((char *str));
int	raprin1 P((SCM exp, SCM port, int writing));
SCM	markcdr P((SCM ptr));
SCM	mark0 P((SCM ptr));
SCM	equal0 P((SCM ptr1, SCM ptr2));
sizet	free0 P((CELLPTR ptr));
void	warn P((char *str1, char *str2));
void	everr P((SCM exp, SCM env, SCM arg, char *pos, char *s_subr));
void	wta P((SCM arg, char *pos, char *s_subr));
SCM	intern P((char *name, sizet len));
SCM	sysintern P((char *name, SCM val));
SCM	sym2vcell P((SCM sym));
SCM	makstr P((long len));
SCM	make_subr P((char *name, int type, SCM (*fcn)()));
SCM	closure P((SCM code, SCM env));
SCM	makprom P((SCM code));
SCM	force P((SCM x));
SCM	makarb P((SCM name));
SCM	tryarb P((SCM arb));
SCM	relarb P((SCM arb));
SCM	ceval P((SCM x, SCM env));
SCM	prolixity P((SCM arg));
SCM	gc_for_newcell P((void));
SCM	gc P((void));
SCM	tryload P((SCM filename));
SCM	acons P((SCM w, SCM x, SCM y));
SCM	cons2 P((SCM w, SCM x, SCM y));
SCM	resizuve P((SCM vect, SCM len));
SCM	lnot P((SCM x));
SCM	booleanp P((SCM obj));
SCM	eq P((SCM x, SCM y));
SCM	equal P((SCM x, SCM y));
SCM	consp P((SCM x));
SCM	cons P((SCM x, SCM y));
SCM	nullp P((SCM x));
SCM	setcar P((SCM pair, SCM value));
SCM	setcdr P((SCM pair, SCM value));
SCM	listp P((SCM x));
SCM	list P((SCM objs));
SCM	length P((SCM x));
SCM	append P((SCM args));
SCM	reverse P((SCM lst));
SCM	list_ref P((SCM lst, SCM k));
SCM	memq P((SCM x, SCM lst));
SCM	member P((SCM x, SCM lst));
SCM	memv P((SCM x, SCM lst));
SCM	assq P((SCM x, SCM alist));
SCM	assoc P((SCM x, SCM alist));
SCM	symbolp P((SCM x));
SCM	symbol2string P((SCM s));
SCM	string2symbol P((SCM s));
SCM	numberp P((SCM x));
SCM	exactp P((SCM x));
SCM	inexactp P((SCM x));
SCM	eqp P((SCM x, SCM y));
SCM	lessp P((SCM x, SCM y));
SCM	zerop P((SCM z));
SCM	positivep P((SCM x));
SCM	negativep P((SCM x));
SCM	oddp P((SCM n));
SCM	evenp P((SCM n));
SCM	lmax P((SCM x, SCM y));
SCM	lmin P((SCM x, SCM y));
SCM	sum P((SCM x, SCM y));
SCM	difference P((SCM x, SCM y));
SCM	product P((SCM x, SCM y));
SCM	divide P((SCM x, SCM y));
SCM	lquotient P((SCM x, SCM y));
SCM	absval P((SCM x));
SCM	lremainder P((SCM x, SCM y));
SCM	modulo P((SCM x, SCM y));
SCM	lgcd P((SCM x, SCM y));
SCM	llcm P((SCM n1, SCM n2));
SCM	number2string P((SCM x, SCM radix));
SCM	istring2number P((char *str, long len, long radix));
SCM	string2number P((SCM str, SCM radix));
SCM	istr2flo P((char *str, long len, long radix));
SCM	mkbig P((sizet nlen, int sign));
SCM	mkstrport P((SCM pos, SCM str, long modes, char *caller));
SCM	long2big P((long n));
SCM	ulong2big P((unsigned long n));
SCM	big2inum P((SCM b, sizet l));
sizet	iint2str P((long num, int rad, char *p));
SCM	floequal P((SCM x, SCM y));
SCM	uve_equal P((SCM u, SCM v));
SCM	raequal P((SCM ra0, SCM ra1));
SCM	array_equal P((SCM u, SCM v));
SCM	array_rank P((SCM ra));
int     rafill P((SCM ra, SCM fill, SCM ignore));
SCM	uve_fill P((SCM uve, SCM fill));
SCM	array_fill P((SCM ra, SCM fill));
SCM	array_prot P((SCM ra));
int	bigprint P((SCM exp, SCM port, int writing));
int	floprint P((SCM sexp, SCM port, int writing));
SCM	istr2int P((char *str, long len, long radix));
SCM	istr2bve P((char *str, long len));
void	ipruk P((char *hdr, SCM ptr, SCM port));
SCM	charp P((SCM x));
SCM	char_lessp P((SCM x, SCM y));
SCM	chci_eq P((SCM x, SCM y));
SCM	chci_lessp P((SCM x, SCM y));
SCM	char_alphap P((SCM chr));
SCM	char_nump P((SCM chr));
SCM	char_whitep P((SCM chr));
SCM	char_upperp P((SCM chr));
SCM	char_lowerp P((SCM chr));
SCM	char2int P((SCM chr));
SCM	int2char P((SCM n));
SCM	char_upcase P((SCM chr));
SCM	char_downcase P((SCM chr));
SCM	stringp P((SCM x));
SCM	string P((SCM chrs));
SCM	make_string P((SCM k, SCM chr));
SCM	string2list P((SCM str));
SCM	st_length P((SCM str));
SCM	st_ref P((SCM str, SCM k));
SCM	st_set P((SCM str, SCM k, SCM chr));
SCM	st_equal P((SCM s1, SCM s2));
SCM	stci_equal P((SCM s1, SCM s2));
SCM	st_lessp P((SCM s1, SCM s2));
SCM	stci_lessp P((SCM s1, SCM s2));
SCM	substring P((SCM str, SCM start, SCM end));
SCM	st_append P((SCM args));
SCM	vectorp P((SCM x));
SCM	vector_length P((SCM v));
SCM	vector P((SCM l));
SCM	vector_ref P((SCM v, SCM k));
SCM	vector_set P((SCM v, SCM k, SCM obj));
SCM	make_vector P((SCM k, SCM fill));
SCM	vector2list P((SCM v));
SCM	for_each P((SCM proc, SCM arg1, SCM args));
SCM	procedurep P((SCM obj));
SCM	apply P((SCM proc, SCM arg1, SCM args));
SCM	map P((SCM proc, SCM arg1, SCM args));
SCM	scm_make_cont P((void));
SCM	copytree P((SCM obj));
SCM	eval P((SCM obj));
SCM 	identp P((SCM obj));
SCM 	ident_eqp P((SCM id1, SCM id2, SCM env));
SCM 	renamed_ident P((SCM id, SCM env));
SCM	input_portp P((SCM x));
SCM	output_portp P((SCM x));
SCM	cur_input_port P((void));
SCM	cur_output_port P((void));
SCM	i_setbuf0 P((SCM port));
SCM	open_file P((SCM filename, SCM modes));
SCM	open_pipe P((SCM pipestr, SCM modes));
SCM	close_port P((SCM port));
SCM	lread P((SCM port));
SCM	scm_read_char P((SCM port));
SCM	peek_char P((SCM port));
SCM	eof_objectp P((SCM x));
SCM	lwrite P((SCM obj, SCM port));
SCM	display P((SCM obj, SCM port));
SCM	newline P((SCM port));
SCM	write_char P((SCM chr, SCM port));
SCM	file_position P((SCM port));
SCM	file_set_position P((SCM port, SCM pos));
SCM	lgetenv P((SCM nam));
SCM	prog_args P((void));
SCM	makacro P((SCM code));
SCM	makmacro P((SCM code));
SCM	makmmacro P((SCM code));
void	poll_routine P((void));
void	tick_signal P((void));
void	stack_check P((void));
SCM	list2ura P((SCM ndim, SCM prot, SCM lst));
SCM	make_ra P((int ndim));
SCM	makflo P((float x));
SCM	arrayp P((SCM v, SCM prot));
SCM	array_contents P((SCM ra, SCM strict));
SCM     uve_read P((SCM v, SCM port));
SCM     uve_write P((SCM v, SCM port));
SCM     ura_read P((SCM v, SCM port));
SCM     ura_write P((SCM v, SCM port));
SCM	aset P((SCM v, SCM obj, SCM args));
SCM	aref P((SCM v, SCM args));
SCM	cvref P((SCM v, sizet pos, SCM last));
SCM	quit P((SCM n));
void	ints_viol P((int sense));
void	add_final P((void (*final)(void)));
SCM	makcclo P((SCM proc, long len));
SCM	make_uve P((long k, SCM prot));
SCM	ra2contig P((SCM ra, int copy));
SCM	sc2array P((SCM s, SCM ra, SCM prot));
SCM	array_copy P((SCM src, SCM dst));
long	aind P((SCM ra, SCM args, char *what));
SCM	scm_eval_string P((SCM str));
SCM	scm_load_string P((SCM str));
void	scm_print_stack P((SCM stk));
char *	dld_find_executable P((const char* command));
SCM	scm_unexec P((const SCM pathname));

				/* Defined in "rope.c" */
SCM	 long2num P((long n));
SCM	ulong2num P((unsigned long n));
unsigned char  num2uchar  P((SCM num, char *pos, char *s_caller));
unsigned short num2ushort P((SCM num, char *pos, char *s_caller));
unsigned long  num2ulong  P((SCM num, char *pos, char *s_caller));
	 long  num2long   P((SCM num, char *pos, char *s_caller));
        double num2dbl    P((SCM num, char *pos, char *s_caller));
SCM	makfromstr  P((char *src, sizet len));
SCM	makfromstrs P((int argc, char **argv));
SCM	makfrom0str P((char *scr));
char  **makargvfrmstrs P((SCM args, char *s_v));
void	must_free_argv P((char **argv));
SCM	scm_evstr  P((char *str));
void	scm_ldstr  P((char *str));
int	scm_ldfile P((char *path));
int	scm_ldprog P((char *path));
unsigned long scm_addr P((SCM args, char *name));
int	scm_cell_p P((SCM x));

#ifdef FLOATS
SCM	makdbl P((double x, double y));
SCM	dbl2big P((double d));
double	big2dbl P((SCM b));
double	lasinh P((double x));
double	lacosh P((double x));
double	latanh P((double x));
double	ltrunc P((double x));
double	round P((double x));
double	floident P((double x));
#endif

#ifdef BIGDIG
void	longdigs P((long x, BIGDIG digs[DIGSPERLONG]));
SCM	adjbig P((SCM b, sizet nlen));
SCM	normbig P((SCM b));
SCM	copybig P((SCM b, int sign));
SCM	addbig P((BIGDIG *x, sizet nx, int xsgn, SCM bigy, int sgny));
SCM	mulbig P((BIGDIG *x, sizet nx, BIGDIG *y, sizet ny, int sgn));
unsigned int divbigdig P((BIGDIG *ds, sizet h, BIGDIG div));
SCM	divbigint P((SCM x, long z, int sgn, int mode));
SCM	divbigbig P((BIGDIG *x, sizet nx, BIGDIG *y, sizet ny, int sgn,
		   int modes));
long	 pseudolong P((long x));
#endif
int	bigcomp P((SCM x, SCM y));
SCM	bigequal P((SCM x, SCM y));

/* "script.c" functions */
char *	scm_cat_path P((char *str1, const char *str2, long n));
char *	scm_try_path P((char *path));
char *	script_find_executable P((const char *command));
char **	script_process_argv P((int argc, char **argv));
int	script_count_argv P((char **argv));
char *	scm_find_impl_file P((char *exec_path, const char *generic_name,
			      const char *initname, const char *sep));

#ifdef RECKLESS
# define ASSERT(_cond, _arg, _pos, _subr) ;
# define ASRTGO(_cond, _label) ;
#else
# define ASSERT(_cond, _arg, _pos, _subr) if(!(_cond))wta(_arg, (char *)(_pos), _subr);
# define ASRTGO(_cond, _label) if(!(_cond)) goto _label;
#endif

#define ARGn 0
#define ARG1 1
#define ARG2 2
#define ARG3 3
#define ARG4 4
#define ARG5 5
  /* following must match entry indexes in errmsgs[] */
#define WNA 6
#define OVFLOW 7
#define OUTOFRANGE 8
#define NALLOC 9
#define EXIT 10
#define HUP_SIGNAL 11
#define INT_SIGNAL 12
#define FPE_SIGNAL 13
#define BUS_SIGNAL 14
#define SEGV_SIGNAL 15
#define ALRM_SIGNAL 16

#define EVAL(x, env) (IMP(x)?(x):ceval((x), (env)))
#define SIDEVAL(x, env) if NIMP(x) ceval((x), (env))

#define NEWCELL(_into) {if IMP(freelist) _into = gc_for_newcell();\
	else {_into = freelist;freelist = CDR(freelist);++cells_allocated;}}

#ifdef __cplusplus
}
#endif