plan9fox/sys/src/cmd/qc/list.c

#define EXTERN
#include "gc.h"

void
listinit(void)
{

	fmtinstall('A', Aconv);
	fmtinstall('P', Pconv);
	fmtinstall('S', Sconv);
	fmtinstall('N', Nconv);
	fmtinstall('D', Dconv);
	fmtinstall('B', Bconv);
}

int
Bconv(Fmt *fp)
{
	Bits bits;
	int i;

	bits = va_arg(fp->args, Bits);
	while(bany(&bits)) {
		i = bnum(bits);
		bits.b[i/32] &= ~(1L << (i%32));
		if(var[i].sym == S)
			fmtprint(fp, "$%ld ", var[i].offset);
		else
			fmtprint(fp, "%s ", var[i].sym->name);
	}
	return 0;
}

int
Pconv(Fmt *fp)
{
	char str[STRINGSZ], *s;
	Prog *p;
	int a;

	p = va_arg(fp->args, Prog*);
	a = p->as;
	if(a == ADATA)
		snprint(str, sizeof str, "	%A	%D/%d,%D", a, &p->from, p->reg, &p->to);
	else if(p->as == ATEXT)
		snprint(str, sizeof str, "	%A	%D,%d,%D", a, &p->from, p->reg, &p->to);
	else {
		s = seprint(str, str+sizeof(str), "	%A	%D", a, &p->from);
		if(p->reg != NREG)
			s = seprint(s, str+sizeof(str), ",%c%d", p->from.type==D_FREG? 'F': 'R', p->reg);
		if(p->from3.type != D_NONE)
			s = seprint(s, str+sizeof(str), ",%D", &p->from3);
		seprint(s, s+sizeof(str), ",%D", &p->to);
	}
	return fmtstrcpy(fp, str);
}

int
Aconv(Fmt *fp)
{
	char *s;
	int a;

	a = va_arg(fp->args, int);
	s = "???";
	if(a >= AXXX && a <= ALAST)
		s = anames[a];
	return fmtstrcpy(fp, s);
}

int
Dconv(Fmt *fp)
{
	char str[STRINGSZ];
	Adr *a;

	a = va_arg(fp->args, Adr*);
	switch(a->type) {

	default:
		snprint(str, sizeof str, "GOK-type(%d)", a->type);
		break;

	case D_NONE:
		str[0] = 0;
		if(a->name != D_NONE || a->reg != NREG || a->sym != S)
			snprint(str, sizeof str, "%N(R%d)(NONE)", a, a->reg);
		break;

	case D_CONST:
		if(a->reg != NREG)
			snprint(str, sizeof str, "$%N(R%d)", a, a->reg);
		else
			snprint(str, sizeof str, "$%N", a);
		break;

	case D_OREG:
		if(a->reg != NREG)
			snprint(str, sizeof str, "%N(R%d)", a, a->reg);
		else
			snprint(str, sizeof str, "%N", a);
		break;

	case D_REG:
		snprint(str, sizeof str, "R%d", a->reg);
		if(a->name != D_NONE || a->sym != S)
			snprint(str, sizeof str, "%N(R%d)(REG)", a, a->reg);
		break;

	case D_FREG:
		snprint(str, sizeof str, "F%d", a->reg);
		if(a->name != D_NONE || a->sym != S)
			snprint(str, sizeof str, "%N(F%d)(REG)", a, a->reg);
		break;

	case D_CREG:
		snprint(str, sizeof str, "C%d", a->reg);
		if(a->name != D_NONE || a->sym != S)
			snprint(str, sizeof str, "%N(C%d)(REG)", a, a->reg);
		break;

	case D_BRANCH:
		snprint(str, sizeof str, "%ld(PC)", a->offset-pc);
		break;

	case D_FCONST:
		snprint(str, sizeof str, "$%.17e", a->dval);
		break;

	case D_SCONST:
		snprint(str, sizeof str, "$\"%S\"", a->sval);
		break;
	}
	return fmtstrcpy(fp, str);
}

int
Sconv(Fmt *fp)
{
	int i, c;
	char str[STRINGSZ], *p, *a;

	a = va_arg(fp->args, char*);
	p = str;
	for(i=0; i<NSNAME; i++) {
		c = a[i] & 0xff;
		if(c >= 'a' && c <= 'z' ||
		   c >= 'A' && c <= 'Z' ||
		   c >= '0' && c <= '9' ||
		   c == ' ' || c == '%') {
			*p++ = c;
			continue;
		}
		*p++ = '\\';
		switch(c) {
		case 0:
			*p++ = 'z';
			continue;
		case '\\':
		case '"':
			*p++ = c;
			continue;
		case '\n':
			*p++ = 'n';
			continue;
		case '\t':
			*p++ = 't';
			continue;
		case '\r':
			*p++ = 'r';
			continue;
		case '\f':
			*p++ = 'f';
			continue;
		}
		*p++ = (c>>6) + '0';
		*p++ = ((c>>3) & 7) + '0';
		*p++ = (c & 7) + '0';
	}
	*p = 0;
	return fmtstrcpy(fp, str);
}

int
Nconv(Fmt *fp)
{
	char str[STRINGSZ];
	Adr *a;
	Sym *s;
	int i, l, b, n;

	a = va_arg(fp->args, Adr*);
	s = a->sym;
	if(s == S) {
		if(a->offset > 64 || -a->offset > 64) {
			n = 0;
			l = a->offset & 1;
			for(i=0; i<32; i++){
				b = (a->offset >> i) & 1;
				if(b != l)
					n++;
				l = b;
			}
			if(n < 2) {
				snprint(str, sizeof str, "%#lux", a->offset);
				goto out;
			}
		}
		snprint(str, sizeof str, "%ld", a->offset);
		goto out;
	}
	switch(a->name) {
	default:
		snprint(str, sizeof str, "GOK-name(%d)", a->name);
		break;

	case D_EXTERN:
		snprint(str, sizeof str, "%s+%ld(SB)", s->name, a->offset);
		break;

	case D_STATIC:
		snprint(str, sizeof str, "%s<>+%ld(SB)", s->name, a->offset);
		break;

	case D_AUTO:
		snprint(str, sizeof str, "%s-%ld(SP)", s->name, -a->offset);
		break;

	case D_PARAM:
		snprint(str, sizeof str, "%s+%ld(FP)", s->name, a->offset);
		break;
	}
out:
	return fmtstrcpy(fp, str);
}