summaryrefslogtreecommitdiff
path: root/src/cmd/cc/cc.h
blob: 866aeb0abbb92f123f60786d0f0c888d6e2d0fb7 (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
// Inferno utils/cc/cc.h
// http://code.google.com/p/inferno-os/source/browse/utils/cc/cc.h
//
//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
//	Portions Copyright © 1997-1999 Vita Nuova Limited
//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
//	Portions Copyright © 2004,2006 Bruce Ellis
//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
//	Portions Copyright © 2009 The Go Authors.  All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#include <libc.h>
#include <bio.h>

#ifndef	EXTERN
#define EXTERN	extern
#endif

#undef	getc
#undef	ungetc
#undef	BUFSIZ

#define	getc	ccgetc
#define	ungetc	ccungetc

typedef	struct	Node	Node;
typedef	struct	Sym	Sym;
typedef	struct	Type	Type;
typedef	struct	Funct	Funct;
typedef	struct	Decl	Decl;
typedef	struct	Io	Io;
typedef	struct	Hist	Hist;
typedef	struct	Term	Term;
typedef	struct	Init	Init;
typedef	struct	Bits	Bits;
typedef	struct	Dynimp	Dynimp;
typedef	struct	Dynexp	Dynexp;

#define	BUFSIZ		8192
#define	NSYMB		500
#define	NHASH		1024
#define	STRINGSZ	200
#define	HISTSZ		20
#define YYMAXDEPTH	500
#define	NTERM		10
#define	MAXALIGN	7

#define	SIGN(n)		((uvlong)1<<(n-1))
#define	MASK(n)		(SIGN(n)|(SIGN(n)-1))

#define	BITS	5
#define	NVAR	(BITS*sizeof(uint32)*8)
struct	Bits
{
	uint32	b[BITS];
};

struct	Node
{
	Node*	left;
	Node*	right;
	void*	label;
	int32	pc;
	int	reg;
	int32	xoffset;
	double	fconst;		/* fp constant */
	vlong	vconst;		/* non fp const */
	char*	cstring;	/* character string */
	ushort*	rstring;	/* rune string */

	Sym*	sym;
	Type*	type;
	int32	lineno;
	uchar	op;
	uchar	oldop;
	uchar	xcast;
	uchar	class;
	uchar	etype;
	uchar	complex;
	uchar	addable;
	uchar	scale;
	uchar	garb;
};
#define	Z	((Node*)0)

struct	Sym
{
	Sym*	link;
	Type*	type;
	Type*	suetag;
	Type*	tenum;
	char*	macro;
	int32	varlineno;
	int32	offset;
	vlong	vconst;
	double	fconst;
	Node*	label;
	ushort	lexical;
	char	*name;
	ushort	block;
	ushort	sueblock;
	uchar	class;
	uchar	sym;
	uchar	aused;
	uchar	sig;
	uchar	dataflag;
};
#define	S	((Sym*)0)

enum{
	SIGNONE = 0,
	SIGDONE = 1,
	SIGINTERN = 2,

	SIGNINTERN = 1729*325*1729,
};

struct	Decl
{
	Decl*	link;
	Sym*	sym;
	Type*	type;
	int32	varlineno;
	int32	offset;
	short	val;
	ushort	block;
	uchar	class;
	uchar	aused;
};
#define	D	((Decl*)0)

struct	Type
{
	Sym*	sym;
	Sym*	tag;
	Funct*	funct;
	Type*	link;
	Type*	down;
	int32	width;
	int32	offset;
	int32	lineno;
	uchar	shift;
	uchar	nbits;
	uchar	etype;
	uchar	garb;
	uchar	align;
};

#define	T	((Type*)0)
#define	NODECL	((void(*)(int, Type*, Sym*))0)

struct	Init			/* general purpose initialization */
{
	int	code;
	uint32	value;
	char*	s;
};

EXTERN struct
{
	char*	p;
	int	c;
} fi;

struct	Io
{
	Io*	link;
	char*	p;
	char	b[BUFSIZ];
	short	c;
	short	f;
};
#define	I	((Io*)0)

struct	Hist
{
	Hist*	link;
	char*	name;
	int32	line;
	int32	offset;
};
#define	H	((Hist*)0)
EXTERN Hist*	hist;

struct	Term
{
	vlong	mult;
	Node	*node;
};

enum
{
	Axxx,
	Ael1,
	Ael2,
	Asu2,
	Aarg0,
	Aarg1,
	Aarg2,
	Aaut3,
	NALIGN,
};

enum
{
	DMARK,
	DAUTO,
	DSUE,
	DLABEL,
};
enum
{
	OXXX,
	OADD,
	OADDR,
	OAND,
	OANDAND,
	OARRAY,
	OAS,
	OASI,
	OASADD,
	OASAND,
	OASASHL,
	OASASHR,
	OASDIV,
	OASHL,
	OASHR,
	OASLDIV,
	OASLMOD,
	OASLMUL,
	OASLSHR,
	OASMOD,
	OASMUL,
	OASOR,
	OASSUB,
	OASXOR,
	OBIT,
	OBREAK,
	OCASE,
	OCAST,
	OCOMMA,
	OCOND,
	OCONST,
	OCONTINUE,
	ODIV,
	ODOT,
	ODOTDOT,
	ODWHILE,
	OENUM,
	OEQ,
	OEXREG,
	OFOR,
	OFUNC,
	OGE,
	OGOTO,
	OGT,
	OHI,
	OHS,
	OIF,
	OIND,
	OINDREG,
	OINIT,
	OLABEL,
	OLDIV,
	OLE,
	OLIST,
	OLMOD,
	OLMUL,
	OLO,
	OLS,
	OLSHR,
	OLT,
	OMOD,
	OMUL,
	ONAME,
	ONE,
	ONOT,
	OOR,
	OOROR,
	OPOSTDEC,
	OPOSTINC,
	OPREDEC,
	OPREINC,
	OPREFETCH,
	OPROTO,
	OREGISTER,
	ORETURN,
	OSET,
	OSIGN,
	OSIZE,
	OSTRING,
	OLSTRING,
	OSTRUCT,
	OSUB,
	OSWITCH,
	OUNION,
	OUSED,
	OWHILE,
	OXOR,
	ONEG,
	OCOM,
	OPOS,
	OELEM,

	OTST,		/* used in some compilers */
	OINDEX,
	OFAS,
	OREGPAIR,
	OROTL,

	OEND
};
enum
{
	TXXX,
	TCHAR,
	TUCHAR,
	TSHORT,
	TUSHORT,
	TINT,
	TUINT,
	TLONG,
	TULONG,
	TVLONG,
	TUVLONG,
	TFLOAT,
	TDOUBLE,
	TIND,
	TFUNC,
	TARRAY,
	TVOID,
	TSTRUCT,
	TUNION,
	TENUM,
	NTYPE,

	TAUTO	= NTYPE,
	TEXTERN,
	TSTATIC,
	TTYPEDEF,
	TTYPESTR,
	TREGISTER,
	TCONSTNT,
	TVOLATILE,
	TUNSIGNED,
	TSIGNED,
	TDOT,
	TFILE,
	TOLD,
	NALLTYPES,
};
enum
{
	CXXX,
	CAUTO,
	CEXTERN,
	CGLOBL,
	CSTATIC,
	CLOCAL,
	CTYPEDEF,
	CTYPESTR,
	CPARAM,
	CSELEM,
	CLABEL,
	CEXREG,
	NCTYPES,
};
enum
{
	GXXX		= 0,
	GCONSTNT	= 1<<0,
	GVOLATILE	= 1<<1,
	NGTYPES		= 1<<2,

	GINCOMPLETE	= 1<<2,
};
enum
{
	BCHAR		= 1L<<TCHAR,
	BUCHAR		= 1L<<TUCHAR,
	BSHORT		= 1L<<TSHORT,
	BUSHORT		= 1L<<TUSHORT,
	BINT		= 1L<<TINT,
	BUINT		= 1L<<TUINT,
	BLONG		= 1L<<TLONG,
	BULONG		= 1L<<TULONG,
	BVLONG		= 1L<<TVLONG,
	BUVLONG		= 1L<<TUVLONG,
	BFLOAT		= 1L<<TFLOAT,
	BDOUBLE		= 1L<<TDOUBLE,
	BIND		= 1L<<TIND,
	BFUNC		= 1L<<TFUNC,
	BARRAY		= 1L<<TARRAY,
	BVOID		= 1L<<TVOID,
	BSTRUCT		= 1L<<TSTRUCT,
	BUNION		= 1L<<TUNION,
	BENUM		= 1L<<TENUM,
	BFILE		= 1L<<TFILE,
	BDOT		= 1L<<TDOT,
	BCONSTNT	= 1L<<TCONSTNT,
	BVOLATILE	= 1L<<TVOLATILE,
	BUNSIGNED	= 1L<<TUNSIGNED,
	BSIGNED		= 1L<<TSIGNED,
	BAUTO		= 1L<<TAUTO,
	BEXTERN		= 1L<<TEXTERN,
	BSTATIC		= 1L<<TSTATIC,
	BTYPEDEF	= 1L<<TTYPEDEF,
	BTYPESTR	= 1L<<TTYPESTR,
	BREGISTER	= 1L<<TREGISTER,

	BINTEGER	= BCHAR|BUCHAR|BSHORT|BUSHORT|BINT|BUINT|
				BLONG|BULONG|BVLONG|BUVLONG,
	BNUMBER		= BINTEGER|BFLOAT|BDOUBLE,

/* these can be overloaded with complex types */

	BCLASS		= BAUTO|BEXTERN|BSTATIC|BTYPEDEF|BTYPESTR|BREGISTER,
	BGARB		= BCONSTNT|BVOLATILE,
};

struct	Funct
{
	Sym*	sym[OEND];
	Sym*	castto[NTYPE];
	Sym*	castfr[NTYPE];
};

EXTERN struct
{
	Type*	tenum;		/* type of entire enum */
	Type*	cenum;		/* type of current enum run */
	vlong	lastenum;	/* value of current enum */
	double	floatenum;	/* value of current enum */
} en;

EXTERN	int	autobn;
EXTERN	int32	autoffset;
EXTERN	int	blockno;
EXTERN	Decl*	dclstack;
EXTERN	int	debug[256];
EXTERN	Hist*	ehist;
EXTERN	int32	firstbit;
EXTERN	Sym*	firstarg;
EXTERN	Type*	firstargtype;
EXTERN	Decl*	firstdcl;
EXTERN	int	fperror;
EXTERN	Sym*	hash[NHASH];
EXTERN	char*	hunk;
EXTERN	char**	include;
EXTERN	Io*	iofree;
EXTERN	Io*	ionext;
EXTERN	Io*	iostack;
EXTERN	int32	lastbit;
EXTERN	char	lastclass;
EXTERN	Type*	lastdcl;
EXTERN	int32	lastfield;
EXTERN	Type*	lasttype;
EXTERN	int32	lineno;
EXTERN	int32	nearln;
EXTERN	int	nerrors;
EXTERN	int	newflag;
EXTERN	int32	nhunk;
EXTERN	int	ninclude;
EXTERN	Node*	nodproto;
EXTERN	Node*	nodcast;
EXTERN	int32	nsymb;
EXTERN	Biobuf	outbuf;
EXTERN	Biobuf	diagbuf;
EXTERN	char*	outfile;
EXTERN	char*	pathname;
EXTERN	int	peekc;
EXTERN	int32	stkoff;
EXTERN	Type*	strf;
EXTERN	Type*	strl;
EXTERN	char*	symb;
EXTERN	Sym*	symstring;
EXTERN	int	taggen;
EXTERN	Type*	tfield;
EXTERN	Type*	tufield;
EXTERN	int	thechar;
EXTERN	char*	thestring;
EXTERN	Type*	thisfn;
EXTERN	int32	thunk;
EXTERN	Type*	types[NALLTYPES];
EXTERN	Type*	fntypes[NALLTYPES];
EXTERN	Node*	initlist;
EXTERN	Term	term[NTERM];
EXTERN	int	nterm;
EXTERN	int	packflg;
EXTERN	int	fproundflg;
EXTERN	int	textflag;
EXTERN	int	dataflag;
EXTERN	int	flag_largemodel;
EXTERN	int	ncontin;
EXTERN	int	canreach;
EXTERN	int	warnreach;
EXTERN	Bits	zbits;
EXTERN	Fmt	pragcgobuf;

extern	char	*onames[], *tnames[], *gnames[];
extern	char	*cnames[], *qnames[], *bnames[];
extern	uchar	tab[NTYPE][NTYPE];
extern	uchar	comrel[], invrel[], logrel[];
extern	int32	ncast[], tadd[], tand[];
extern	int32	targ[], tasadd[], tasign[], tcast[];
extern	int32	tdot[], tfunct[], tindir[], tmul[];
extern	int32	tnot[], trel[], tsub[];

extern	uchar	typeaf[];
extern	uchar	typefd[];
extern	uchar	typei[];
extern	uchar	typesu[];
extern	uchar	typesuv[];
extern	uchar	typeu[];
extern	uchar	typev[];
extern	uchar	typec[];
extern	uchar	typeh[];
extern	uchar	typeil[];
extern	uchar	typeilp[];
extern	uchar	typechl[];
extern	uchar	typechlv[];
extern	uchar	typechlvp[];
extern	uchar	typechlp[];
extern	uchar	typechlpfd[];

EXTERN	uchar*	typeword;
EXTERN	uchar*	typecmplx;

extern	uint32	thash1;
extern	uint32	thash2;
extern	uint32	thash3;
extern	uint32	thash[];

/*
 *	compat.c/unix.c/windows.c
 */
int	systemtype(int);
int	pathchar(void);

/*
 *	parser
 */
int	yyparse(void);
int	mpatov(char*, vlong*);

/*
 *	lex.c
 */
void*	allocn(void*, int32, int32);
void*	alloc(int32);
void    ensuresymb(int32);
void	cinit(void);
int	compile(char*, char**, int);
void	errorexit(void);
int	filbuf(void);
int	getc(void);
int32	getr(void);
int	getnsc(void);
Sym*	lookup(void);
void	main(int, char*[]);
void	newfile(char*, int);
void	newio(void);
void	pushio(void);
int32	escchar(int32, int, int);
Sym*	slookup(char*);
void	syminit(Sym*);
void	unget(int);
int32	yylex(void);
int	Lconv(Fmt*);
int	Tconv(Fmt*);
int	FNconv(Fmt*);
int	Oconv(Fmt*);
int	Qconv(Fmt*);
int	VBconv(Fmt*);
void	setinclude(char*);

/*
 * mac.c
 */
void	dodefine(char*);
void	domacro(void);
Sym*	getsym(void);
int32	getnsn(void);
void	linehist(char*, int);
void	macdef(void);
void	macprag(void);
void	macend(void);
void	macexpand(Sym*, char*);
void	macif(int);
void	macinc(void);
void	maclin(void);
void	macund(void);

/*
 * dcl.c
 */
Node*	doinit(Sym*, Type*, int32, Node*);
Type*	tcopy(Type*);
Node*	init1(Sym*, Type*, int32, int);
Node*	newlist(Node*, Node*);
void	adecl(int, Type*, Sym*);
int	anyproto(Node*);
void	argmark(Node*, int);
void	dbgdecl(Sym*);
Node*	dcllabel(Sym*, int);
Node*	dodecl(void(*)(int, Type*, Sym*), int, Type*, Node*);
Sym*	mkstatic(Sym*);
void	doenum(Sym*, Node*);
void	snap(Type*);
Type*	dotag(Sym*, int, int);
void	edecl(int, Type*, Sym*);
Type*	fnproto(Node*);
Type*	fnproto1(Node*);
void	markdcl(void);
Type*	paramconv(Type*, int);
void	pdecl(int, Type*, Sym*);
Decl*	push(void);
Decl*	push1(Sym*);
Node*	revertdcl(void);
int32	xround(int32, int);
int	rsametype(Type*, Type*, int, int);
int	sametype(Type*, Type*);
uint32	sign(Sym*);
uint32	signature(Type*);
void	sualign(Type*);
void	tmerge(Type*, Sym*);
void	walkparam(Node*, int);
void	xdecl(int, Type*, Sym*);
Node*	contig(Sym*, Node*, int32);

/*
 * com.c
 */
void	ccom(Node*);
void	complex(Node*);
int	tcom(Node*);
int	tcoma(Node*, Node*, Type*, int);
int	tcomd(Node*);
int	tcomo(Node*, int);
int	tcomx(Node*);
int	tlvalue(Node*);
void	constas(Node*, Type*, Type*);

/*
 * con.c
 */
void	acom(Node*);
void	acom1(vlong, Node*);
void	acom2(Node*, Type*);
int	acomcmp1(const void*, const void*);
int	acomcmp2(const void*, const void*);
int	addo(Node*);
void	evconst(Node*);

/*
 * funct.c
 */
int	isfunct(Node*);
void	dclfunct(Type*, Sym*);

/*
 * sub.c
 */
void	arith(Node*, int);
int	deadheads(Node*);
Type*	dotsearch(Sym*, Type*, Node*, int32*);
int32	dotoffset(Type*, Type*, Node*);
void	gethunk(void);
Node*	invert(Node*);
int	bitno(int32);
void	makedot(Node*, Type*, int32);
int	mixedasop(Type*, Type*);
Node*	new(int, Node*, Node*);
Node*	new1(int, Node*, Node*);
int	nilcast(Type*, Type*);
int	nocast(Type*, Type*);
void	prtree(Node*, char*);
void	prtree1(Node*, int, int);
void	relcon(Node*, Node*);
int	relindex(int);
int	simpleg(int32);
Type*	garbt(Type*, int32);
int	simplec(int32);
Type*	simplet(int32);
int	stcompat(Node*, Type*, Type*, int32[]);
int	tcompat(Node*, Type*, Type*, int32[]);
void	tinit(void);
Type*	typ(int, Type*);
Type*	copytyp(Type*);
void	typeext(Type*, Node*);
void	typeext1(Type*, Node*);
int	side(Node*);
int	vconst(Node*);
int	xlog2(uvlong);
int	vlog(Node*);
int	topbit(uint32);
void	simplifyshift(Node*);
int32	typebitor(int32, int32);
void	diag(Node*, char*, ...);
void	warn(Node*, char*, ...);
void	yyerror(char*, ...);
void	fatal(Node*, char*, ...);

/*
 * acid.c
 */
void	acidtype(Type*);
void	acidvar(Sym*);

/*
 * godefs.c
 */
int	Uconv(Fmt*);
void	godeftype(Type*);
void	godefvar(Sym*);

/*
 * bits.c
 */
Bits	bor(Bits, Bits);
Bits	band(Bits, Bits);
Bits	bnot(Bits);
int	bany(Bits*);
int	bnum(Bits);
Bits	blsh(uint);
int	beq(Bits, Bits);
int	bset(Bits, uint);

/*
 * dpchk.c
 */
void	dpcheck(Node*);
void	arginit(void);
void	pragvararg(void);
void	pragpack(void);
void	pragfpround(void);
void	pragdataflag(void);
void	pragtextflag(void);
void	pragincomplete(void);
void	pragcgo(char*);

/*
 * calls to machine depend part
 */
void	codgen(Node*, Node*);
void	gclean(void);
void	gextern(Sym*, Node*, int32, int32);
void	ginit(void);
int32	outstring(char*, int32);
int32	outlstring(ushort*, int32);
void	sextern(Sym*, Node*, int32, int32);
void	xcom(Node*);
int32	exreg(Type*);
int32	align(int32, Type*, int, int32*);
int32	maxround(int32, int32);

extern	schar	ewidth[];

/*
 * com64
 */
int	com64(Node*);
void	com64init(void);
void	bool64(Node*);
double	convvtof(vlong);
vlong	convftov(double);
double	convftox(double, int);
vlong	convvtox(vlong, int);

/*
 * machcap
 */
int	machcap(Node*);

#pragma	varargck	argpos	warn	2
#pragma	varargck	argpos	diag	2
#pragma	varargck	argpos	yyerror	1

#pragma	varargck	type	"F"	Node*
#pragma	varargck	type	"L"	int32
#pragma	varargck	type	"Q"	int32
#pragma	varargck	type	"O"	int
#pragma	varargck	type	"O"	uint
#pragma	varargck	type	"T"	Type*
#pragma	varargck	type	"U"	char*
#pragma	varargck	type	"|"	int

enum
{
	Plan9	= 1<<0,
	Unix	= 1<<1,
	Windows	= 1<<2,
};
int	pathchar(void);
int	systemtype(int);
void*	alloc(int32 n);
void*	allocn(void*, int32, int32);