Import sources from 2011-03-30 iso image

1 files changed, 690 insertions, 0 deletions

diff --git a/sys/src/cmd/5a/lex.c b/sys/src/cmd/5a/lex.c
new file mode 100755
index 000000000..bf9d767f4
--- /dev/null
+++ b/sys/src/cmd/5a/lex.c
@@ -0,0 +1,690 @@
+#define	EXTERN
+#include "a.h"
+#include "y.tab.h"
+#include <ctype.h>
+
+void
+main(int argc, char *argv[])
+{
+	char *p;
+	int nout, nproc, status, i, c;
+
+	thechar = '5';
+	thestring = "arm";
+	memset(debug, 0, sizeof(debug));
+	cinit();
+	outfile = 0;
+	include[ninclude++] = ".";
+	ARGBEGIN {
+	default:
+		c = ARGC();
+		if(c >= 0 || c < sizeof(debug))
+			debug[c] = 1;
+		break;
+
+	case 'o':
+		outfile = ARGF();
+		break;
+
+	case 'D':
+		p = ARGF();
+		if(p)
+			Dlist[nDlist++] = p;
+		break;
+
+	case 'I':
+		p = ARGF();
+		setinclude(p);
+		break;
+	case 't':
+		thechar = 't';
+		thestring = "thumb";
+		break;
+	} ARGEND
+	if(*argv == 0) {
+		print("usage: %ca [-options] file.s\n", thechar);
+		errorexit();
+	}
+	if(argc > 1 && systemtype(Windows)){
+		print("can't assemble multiple files on windows\n");
+		errorexit();
+	}
+	if(argc > 1 && !systemtype(Windows)) {
+		nproc = 1;
+		if(p = getenv("NPROC"))
+			nproc = atol(p);	/* */
+		c = 0;
+		nout = 0;
+		for(;;) {
+			while(nout < nproc && argc > 0) {
+				i = myfork();
+				if(i < 0) {
+					i = mywait(&status);
+					if(i < 0)
+						errorexit();
+					if(status)
+						c++;
+					nout--;
+					continue;
+				}
+				if(i == 0) {
+					print("%s:\n", *argv);
+					if(assemble(*argv))
+						errorexit();
+					exits(0);
+				}
+				nout++;
+				argc--;
+				argv++;
+			}
+			i = mywait(&status);
+			if(i < 0) {
+				if(c)
+					errorexit();
+				exits(0);
+			}
+			if(status)
+				c++;
+			nout--;
+		}
+	}
+	if(assemble(argv[0]))
+		errorexit();
+	exits(0);
+}
+
+int
+assemble(char *file)
+{
+	char ofile[100], incfile[20], *p;
+	int i, of;
+
+	strcpy(ofile, file);
+	p = utfrrune(ofile, pathchar());
+	if(p) {
+		include[0] = ofile;
+		*p++ = 0;
+	} else
+		p = ofile;
+	if(outfile == 0) {
+		outfile = p;
+		if(outfile){
+			p = utfrrune(outfile, '.');
+			if(p)
+				if(p[1] == 's' && p[2] == 0)
+					p[0] = 0;
+			p = utfrune(outfile, 0);
+			p[0] = '.';
+			p[1] = thechar;
+			p[2] = 0;
+		} else
+			outfile = "/dev/null";
+	}
+	p = getenv("INCLUDE");
+	if(p) {
+		setinclude(p);
+	} else {
+		if(systemtype(Plan9)) {
+			sprint(incfile,"/%s/include", thestring);
+			setinclude(strdup(incfile));
+		}
+	}
+
+	of = mycreat(outfile, 0664);
+	if(of < 0) {
+		yyerror("%ca: cannot create %s", thechar, outfile);
+		errorexit();
+	}
+	Binit(&obuf, of, OWRITE);
+
+	pass = 1;
+	pinit(file);
+	for(i=0; i<nDlist; i++)
+		dodefine(Dlist[i]);
+	yyparse();
+	if(nerrors) {
+		cclean();
+		return nerrors;
+	}
+
+	pass = 2;
+	outhist();
+	pinit(file);
+	for(i=0; i<nDlist; i++)
+		dodefine(Dlist[i]);
+	yyparse();
+	cclean();
+	return nerrors;
+}
+
+struct
+{
+	char	*name;
+	ushort	type;
+	ushort	value;
+} itab[] =
+{
+	"SP",		LSP,	D_AUTO,
+	"SB",		LSB,	D_EXTERN,
+	"FP",		LFP,	D_PARAM,
+	"PC",		LPC,	D_BRANCH,
+
+	"R",		LR,	0,
+	"R0",		LREG,	0,
+	"R1",		LREG,	1,
+	"R2",		LREG,	2,
+	"R3",		LREG,	3,
+	"R4",		LREG,	4,
+	"R5",		LREG,	5,
+	"R6",		LREG,	6,
+	"R7",		LREG,	7,
+	"R8",		LREG,	8,
+	"R9",		LREG,	9,
+	"R10",		LREG,	10,
+	"R11",		LREG,	11,
+	"R12",		LREG,	12,
+	"R13",		LREG,	13,
+	"R14",		LREG,	14,
+	"R15",		LREG,	15,
+
+	"F",		LF,	0,
+
+	"F0",		LFREG,	0,
+	"F1",		LFREG,	1,
+	"F2",		LFREG,	2,
+	"F3",		LFREG,	3,
+	"F4",		LFREG,	4,
+	"F5",		LFREG,	5,
+	"F6",		LFREG,	6,
+	"F7",		LFREG,	7,
+	"F8",		LFREG,	8,
+	"F9",		LFREG,	9,
+	"F10",		LFREG,	10,
+	"F11",		LFREG,	11,
+	"F12",		LFREG,	12,
+	"F13",		LFREG,	13,
+	"F14",		LFREG,	14,
+	"F15",		LFREG,	15,
+
+	"C",		LC,	0,
+
+	"C0",		LCREG,	0,
+	"C1",		LCREG,	1,
+	"C2",		LCREG,	2,
+	"C3",		LCREG,	3,
+	"C4",		LCREG,	4,
+	"C5",		LCREG,	5,
+	"C6",		LCREG,	6,
+	"C7",		LCREG,	7,
+	"C8",		LCREG,	8,
+	"C9",		LCREG,	9,
+	"C10",		LCREG,	10,
+	"C11",		LCREG,	11,
+	"C12",		LCREG,	12,
+	"C13",		LCREG,	13,
+	"C14",		LCREG,	14,
+	"C15",		LCREG,	15,
+
+	"CPSR",		LPSR,	0,
+	"SPSR",		LPSR,	1,
+
+	"FPSR",		LFCR,	0,
+	"FPCR",		LFCR,	1,
+
+	".EQ",		LCOND,	0,
+	".NE",		LCOND,	1,
+	".CS",		LCOND,	2,
+	".HS",		LCOND,	2,
+	".CC",		LCOND,	3,
+	".LO",		LCOND,	3,
+	".MI",		LCOND,	4,
+	".PL",		LCOND,	5,
+	".VS",		LCOND,	6,
+	".VC",		LCOND,	7,
+	".HI",		LCOND,	8,
+	".LS",		LCOND,	9,
+	".GE",		LCOND,	10,
+	".LT",		LCOND,	11,
+	".GT",		LCOND,	12,
+	".LE",		LCOND,	13,
+	".AL",		LCOND,	Always,
+
+	".U",		LS,	C_UBIT,
+	".S",		LS,	C_SBIT,
+	".W",		LS,	C_WBIT,
+	".P",		LS,	C_PBIT,
+	".PW",		LS,	C_WBIT|C_PBIT,
+	".WP",		LS,	C_WBIT|C_PBIT,
+
+	".F",		LS,	C_FBIT,
+
+	".IBW",		LS,	C_WBIT|C_PBIT|C_UBIT,
+	".IAW",		LS,	C_WBIT|C_UBIT,
+	".DBW",		LS,	C_WBIT|C_PBIT,
+	".DAW",		LS,	C_WBIT,
+	".IB",		LS,	C_PBIT|C_UBIT,
+	".IA",		LS,	C_UBIT,
+	".DB",		LS,	C_PBIT,
+	".DA",		LS,	0,
+
+	"@",		LAT,	0,
+
+	"AND",		LTYPE1,	AAND,
+	"EOR",		LTYPE1,	AEOR,
+	"SUB",		LTYPE1,	ASUB,
+	"RSB",		LTYPE1,	ARSB,
+	"ADD",		LTYPE1,	AADD,
+	"ADC",		LTYPE1,	AADC,
+	"SBC",		LTYPE1,	ASBC,
+	"RSC",		LTYPE1,	ARSC,
+	"ORR",		LTYPE1,	AORR,
+	"BIC",		LTYPE1,	ABIC,
+
+	"SLL",		LTYPE1,	ASLL,
+	"SRL",		LTYPE1,	ASRL,
+	"SRA",		LTYPE1,	ASRA,
+
+	"MUL",		LTYPE1, AMUL,
+	"MULA",		LTYPEN, AMULA,
+	"DIV",		LTYPE1,	ADIV,
+	"MOD",		LTYPE1,	AMOD,
+
+	"MULL",		LTYPEM, AMULL,
+	"MULAL",	LTYPEM, AMULAL,
+	"MULLU",	LTYPEM, AMULLU,
+	"MULALU",	LTYPEM, AMULALU,
+
+	"MVN",		LTYPE2, AMVN,	/* op2 ignored */
+
+	"MOVB",		LTYPE3, AMOVB,
+	"MOVBU",	LTYPE3, AMOVBU,
+	"MOVH",		LTYPE3, AMOVH,
+	"MOVHU",	LTYPE3, AMOVHU,
+	"MOVW",		LTYPE3, AMOVW,
+
+	"MOVD",		LTYPE3, AMOVD,
+	"MOVDF",		LTYPE3, AMOVDF,
+	"MOVDW",	LTYPE3, AMOVDW,
+	"MOVF",		LTYPE3, AMOVF,
+	"MOVFD",		LTYPE3, AMOVFD,
+	"MOVFW",		LTYPE3, AMOVFW,
+	"MOVWD",	LTYPE3, AMOVWD,
+	"MOVWF",		LTYPE3, AMOVWF,
+
+/*
+	"ABSF",		LTYPEI, AABSF,
+	"ABSD",		LTYPEI, AABSD,
+	"NEGF",		LTYPEI, ANEGF,
+	"NEGD",		LTYPEI, ANEGD,
+	"SQTF",		LTYPEI,	ASQTF,
+	"SQTD",		LTYPEI,	ASQTD,
+	"RNDF",		LTYPEI,	ARNDF,
+	"RNDD",		LTYPEI,	ARNDD,
+	"URDF",		LTYPEI,	AURDF,
+	"URDD",		LTYPEI,	AURDD,
+	"NRMF",		LTYPEI,	ANRMF,
+	"NRMD",		LTYPEI,	ANRMD,
+*/
+
+	"CMPF",		LTYPEL, ACMPF,
+	"CMPD",		LTYPEL, ACMPD,
+	"ADDF",		LTYPEK,	AADDF,
+	"ADDD",		LTYPEK,	AADDD,
+	"SUBF",		LTYPEK,	ASUBF,
+	"SUBD",		LTYPEK,	ASUBD,
+	"MULF",		LTYPEK,	AMULF,
+	"MULD",		LTYPEK,	AMULD,
+	"DIVF",		LTYPEK,	ADIVF,
+	"DIVD",		LTYPEK,	ADIVD,
+
+	"B",		LTYPE4, AB,
+	"BL",		LTYPE4, ABL,
+	"BX",		LTYPEBX,	ABX,
+
+	"BEQ",		LTYPE5,	ABEQ,
+	"BNE",		LTYPE5,	ABNE,
+	"BCS",		LTYPE5,	ABCS,
+	"BHS",		LTYPE5,	ABHS,
+	"BCC",		LTYPE5,	ABCC,
+	"BLO",		LTYPE5,	ABLO,
+	"BMI",		LTYPE5,	ABMI,
+	"BPL",		LTYPE5,	ABPL,
+	"BVS",		LTYPE5,	ABVS,
+	"BVC",		LTYPE5,	ABVC,
+	"BHI",		LTYPE5,	ABHI,
+	"BLS",		LTYPE5,	ABLS,
+	"BGE",		LTYPE5,	ABGE,
+	"BLT",		LTYPE5,	ABLT,
+	"BGT",		LTYPE5,	ABGT,
+	"BLE",		LTYPE5,	ABLE,
+	"BCASE",	LTYPE5,	ABCASE,
+
+	"SWI",		LTYPE6, ASWI,
+
+	"CMP",		LTYPE7,	ACMP,
+	"TST",		LTYPE7,	ATST,
+	"TEQ",		LTYPE7,	ATEQ,
+	"CMN",		LTYPE7,	ACMN,
+
+	"MOVM",		LTYPE8, AMOVM,
+
+	"SWPBU",	LTYPE9, ASWPBU,
+	"SWPW",		LTYPE9, ASWPW,
+
+	"RET",		LTYPEA, ARET,
+	"RFE",		LTYPEA, ARFE,
+
+	"TEXT",		LTYPEB, ATEXT,
+	"GLOBL",	LTYPEB, AGLOBL,
+	"DATA",		LTYPEC, ADATA,
+	"CASE",		LTYPED, ACASE,
+	"END",		LTYPEE, AEND,
+	"WORD",		LTYPEH, AWORD,
+	"NOP",		LTYPEI, ANOP,
+
+	"MCR",		LTYPEJ, 0,
+	"MRC",		LTYPEJ, 1,
+	0
+};
+
+void
+cinit(void)
+{
+	Sym *s;
+	int i;
+
+	nullgen.sym = S;
+	nullgen.offset = 0;
+	nullgen.type = D_NONE;
+	nullgen.name = D_NONE;
+	nullgen.reg = NREG;
+	if(FPCHIP)
+		nullgen.dval = 0;
+	for(i=0; i<sizeof(nullgen.sval); i++)
+		nullgen.sval[i] = 0;
+
+	nerrors = 0;
+	iostack = I;
+	iofree = I;
+	peekc = IGN;
+	nhunk = 0;
+	for(i=0; i<NHASH; i++)
+		hash[i] = S;
+	for(i=0; itab[i].name; i++) {
+		s = slookup(itab[i].name);
+		s->type = itab[i].type;
+		s->value = itab[i].value;
+	}
+
+	pathname = allocn(pathname, 0, 100);
+	if(mygetwd(pathname, 99) == 0) {
+		pathname = allocn(pathname, 100, 900);
+		if(mygetwd(pathname, 999) == 0)
+			strcpy(pathname, "/???");
+	}
+}
+
+void
+syminit(Sym *s)
+{
+
+	s->type = LNAME;
+	s->value = 0;
+}
+
+int
+isreg(Gen *g)
+{
+
+	USED(g);
+	return 1;
+}
+
+void
+cclean(void)
+{
+
+	outcode(AEND, Always, &nullgen, NREG, &nullgen);
+	Bflush(&obuf);
+}
+
+void
+zname(char *n, int t, int s)
+{
+
+	Bputc(&obuf, ANAME);
+	Bputc(&obuf, t);	/* type */
+	Bputc(&obuf, s);	/* sym */
+	while(*n) {
+		Bputc(&obuf, *n);
+		n++;
+	}
+	Bputc(&obuf, 0);
+}
+
+void
+zaddr(Gen *a, int s)
+{
+	long l;
+	int i;
+	char *n;
+	Ieee e;
+
+	Bputc(&obuf, a->type);
+	Bputc(&obuf, a->reg);
+	Bputc(&obuf, s);
+	Bputc(&obuf, a->name);
+	switch(a->type) {
+	default:
+		print("unknown type %d\n", a->type);
+		exits("arg");
+
+	case D_NONE:
+	case D_REG:
+	case D_FREG:
+	case D_PSR:
+	case D_FPCR:
+		break;
+
+	case D_REGREG:
+		Bputc(&obuf, a->offset);
+		break;
+
+	case D_OREG:
+	case D_CONST:
+	case D_BRANCH:
+	case D_SHIFT:
+		l = a->offset;
+		Bputc(&obuf, l);
+		Bputc(&obuf, l>>8);
+		Bputc(&obuf, l>>16);
+		Bputc(&obuf, l>>24);
+		break;
+
+	case D_SCONST:
+		n = a->sval;
+		for(i=0; i<NSNAME; i++) {
+			Bputc(&obuf, *n);
+			n++;
+		}
+		break;
+
+	case D_FCONST:
+		ieeedtod(&e, a->dval);
+		Bputc(&obuf, e.l);
+		Bputc(&obuf, e.l>>8);
+		Bputc(&obuf, e.l>>16);
+		Bputc(&obuf, e.l>>24);
+		Bputc(&obuf, e.h);
+		Bputc(&obuf, e.h>>8);
+		Bputc(&obuf, e.h>>16);
+		Bputc(&obuf, e.h>>24);
+		break;
+	}
+}
+
+static int bcode[] =
+{
+	ABEQ,
+	ABNE,
+	ABCS,
+	ABCC,
+	ABMI,
+	ABPL,
+	ABVS,
+	ABVC,
+	ABHI,
+	ABLS,
+	ABGE,
+	ABLT,
+	ABGT,
+	ABLE,
+	AB,
+	ANOP,
+};
+
+void
+outcode(int a, int scond, Gen *g1, int reg, Gen *g2)
+{
+	int sf, st, t;
+	Sym *s;
+
+	/* hack to make B.NE etc. work: turn it into the corresponding conditional */
+	if(a == AB){
+		a = bcode[scond&0xf];
+		scond = (scond & ~0xf) | Always;
+	}
+
+	if(pass == 1)
+		goto out;
+jackpot:
+	sf = 0;
+	s = g1->sym;
+	while(s != S) {
+		sf = s->sym;
+		if(sf < 0 || sf >= NSYM)
+			sf = 0;
+		t = g1->name;
+		if(h[sf].type == t)
+		if(h[sf].sym == s)
+			break;
+		zname(s->name, t, sym);
+		s->sym = sym;
+		h[sym].sym = s;
+		h[sym].type = t;
+		sf = sym;
+		sym++;
+		if(sym >= NSYM)
+			sym = 1;
+		break;
+	}
+	st = 0;
+	s = g2->sym;
+	while(s != S) {
+		st = s->sym;
+		if(st < 0 || st >= NSYM)
+			st = 0;
+		t = g2->name;
+		if(h[st].type == t)
+		if(h[st].sym == s)
+			break;
+		zname(s->name, t, sym);
+		s->sym = sym;
+		h[sym].sym = s;
+		h[sym].type = t;
+		st = sym;
+		sym++;
+		if(sym >= NSYM)
+			sym = 1;
+		if(st == sf)
+			goto jackpot;
+		break;
+	}
+	Bputc(&obuf, a);
+	Bputc(&obuf, scond);
+	Bputc(&obuf, reg);
+	Bputc(&obuf, lineno);
+	Bputc(&obuf, lineno>>8);
+	Bputc(&obuf, lineno>>16);
+	Bputc(&obuf, lineno>>24);
+	zaddr(g1, sf);
+	zaddr(g2, st);
+
+out:
+	if(a != AGLOBL && a != ADATA)
+		pc++;
+}
+
+void
+outhist(void)
+{
+	Gen g;
+	Hist *h;
+	char *p, *q, *op, c;
+	int n;
+
+	g = nullgen;
+	c = pathchar();
+	for(h = hist; h != H; h = h->link) {
+		p = h->name;
+		op = 0;
+		/* on windows skip drive specifier in pathname */
+		if(systemtype(Windows) && p && p[1] == ':'){
+			p += 2;
+			c = *p;
+		}
+		if(p && p[0] != c && h->offset == 0 && pathname){
+			/* on windows skip drive specifier in pathname */
+			if(systemtype(Windows) && pathname[1] == ':') {
+				op = p;
+				p = pathname+2;
+				c = *p;
+			} else if(pathname[0] == c){
+				op = p;
+				p = pathname;
+			}
+		}
+		while(p) {
+			q = strchr(p, c);
+			if(q) {
+				n = q-p;
+				if(n == 0){
+					n = 1;	/* leading "/" */
+					*p = '/';	/* don't emit "\" on windows */
+				}
+				q++;
+			} else {
+				n = strlen(p);
+				q = 0;
+			}
+			if(n) {
+				Bputc(&obuf, ANAME);
+				Bputc(&obuf, D_FILE);	/* type */
+				Bputc(&obuf, 1);	/* sym */
+				Bputc(&obuf, '<');
+				Bwrite(&obuf, p, n);
+				Bputc(&obuf, 0);
+			}
+			p = q;
+			if(p == 0 && op) {
+				p = op;
+				op = 0;
+			}
+		}
+		g.offset = h->offset;
+
+		Bputc(&obuf, AHISTORY);
+		Bputc(&obuf, Always);
+		Bputc(&obuf, 0);
+		Bputc(&obuf, h->line);
+		Bputc(&obuf, h->line>>8);
+		Bputc(&obuf, h->line>>16);
+		Bputc(&obuf, h->line>>24);
+		zaddr(&nullgen, 0);
+		zaddr(&g, 0);
+	}
+}
+
+#include "../cc/lexbody"
+#include "../cc/macbody"
+#include "../cc/compat"