ref: 5c1feb0ef0b795e5de71e956f9ccddcd5c4b7f21
dir: /sys/src/cmd/5l/list.c/
#include "l.h"
void
listinit(void)
{
fmtinstall('A', Aconv);
fmtinstall('C', Cconv);
fmtinstall('D', Dconv);
fmtinstall('P', Pconv);
fmtinstall('S', Sconv);
fmtinstall('N', Nconv);
}
void
prasm(Prog *p)
{
print("%P\n", p);
}
int
Pconv(Fmt *fp)
{
char str[STRINGSZ];
Prog *p;
int a;
p = va_arg(fp->args, Prog*);
curp = p;
a = p->as;
switch(a) {
default:
if(p->reg == NREG)
snprint(str, sizeof str, "(%ld) %A%C %D,%D",
p->line, a, p->scond, &p->from, &p->to);
else
if(p->from.type != D_FREG)
snprint(str, sizeof str, "(%ld) %A%C %D,R%d,%D",
p->line, a, p->scond, &p->from, p->reg, &p->to);
else
snprint(str, sizeof str, "(%ld) %A%C %D,F%d,%D",
p->line, a, p->scond, &p->from, p->reg, &p->to);
break;
case ASWPW:
case ASWPBU:
snprint(str, sizeof str, "(%ld) %A%C R%d,%D,%D",
p->line, a, p->scond, p->reg, &p->from, &p->to);
break;
case ADATA:
case AINIT:
case ADYNT:
snprint(str, sizeof str, "(%ld) %A%C %D/%d,%D",
p->line, a, p->scond, &p->from, p->reg, &p->to);
break;
}
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);
}
char* strcond[16] =
{
".EQ",
".NE",
".HS",
".LO",
".MI",
".PL",
".VS",
".VC",
".HI",
".LS",
".GE",
".LT",
".GT",
".LE",
"",
".NV"
};
int
Cconv(Fmt *fp)
{
char s[20];
int c;
c = va_arg(fp->args, int);
strcpy(s, strcond[c & C_SCOND]);
if(c & C_SBIT)
strcat(s, ".S");
if(c & C_PBIT)
strcat(s, ".P");
if(c & C_WBIT)
strcat(s, ".W");
if(c & C_UBIT) /* ambiguous with FBIT */
strcat(s, ".U");
return fmtstrcpy(fp, s);
}
int
Dconv(Fmt *fp)
{
char str[STRINGSZ];
char *op;
Adr *a;
long v;
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, "$%N", a);
else
snprint(str, sizeof str, "$%N(R%d)", a, a->reg);
break;
case D_SHIFT:
v = a->offset;
op = "<<>>->@>" + (((v>>5) & 3) << 1);
if(v & (1<<4))
snprint(str, sizeof str, "R%ld%c%cR%ld", v&15, op[0], op[1], (v>>8)&15);
else {
long sh = (v>>7)&31;
if(sh == 0 && (v & (3<<5)) != 0)
sh = 32;
snprint(str, sizeof str, "R%ld%c%c%ld", v&15, op[0], op[1], sh);
}
if(a->reg != NREG)
snprint(str+strlen(str), sizeof(str)-strlen(str), "(R%d)", a->reg);
break;
case D_OCONST:
snprint(str, sizeof str, "$*$%N", a);
if(a->reg != NREG)
snprint(str, sizeof str, "%N(R%d)(CONST)", a, a->reg);
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_REGREG:
snprint(str, sizeof str, "(R%d,R%d)", a->reg, (int)a->offset);
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(R%d)(REG)", a, a->reg);
break;
case D_PSR:
switch(a->reg) {
case 0:
snprint(str, sizeof str, "CPSR");
break;
case 1:
snprint(str, sizeof str, "SPSR");
break;
default:
snprint(str, sizeof str, "PSR%d", a->reg);
break;
}
if(a->name != D_NONE || a->sym != S)
snprint(str, sizeof str, "%N(PSR%d)(REG)", a, a->reg);
break;
case D_FPCR:
switch(a->reg){
case 0:
snprint(str, sizeof str, "FPSR");
break;
case 1:
snprint(str, sizeof str, "FPCR");
break;
default:
snprint(str, sizeof str, "FCR%d", a->reg);
break;
}
if(a->name != D_NONE || a->sym != S)
snprint(str, sizeof str, "%N(FCR%d)(REG)", a, a->reg);
break;
case D_BRANCH: /* botch */
if(curp->cond != P) {
v = curp->cond->pc;
if(a->sym != S)
snprint(str, sizeof str, "%s+%.5lux(BRANCH)", a->sym->name, v);
else
snprint(str, sizeof str, "%.5lux(BRANCH)", v);
} else
if(a->sym != S)
snprint(str, sizeof str, "%s+%ld(APC)", a->sym->name, a->offset);
else
snprint(str, sizeof str, "%ld(APC)", a->offset);
break;
case D_FCONST:
snprint(str, sizeof str, "$%e", ieeedtod(a->ieee));
break;
case D_SCONST:
snprint(str, sizeof str, "$\"%S\"", a->sval);
break;
}
return fmtstrcpy(fp, str);
}
int
Nconv(Fmt *fp)
{
char str[STRINGSZ];
Adr *a;
Sym *s;
a = va_arg(fp->args, Adr*);
s = a->sym;
switch(a->name) {
default:
snprint(str, sizeof str, "GOK-name(%d)", a->name);
break;
case D_NONE:
snprint(str, sizeof str, "%ld", a->offset);
break;
case D_EXTERN:
if(s == S)
snprint(str, sizeof str, "%ld(SB)", a->offset);
else
snprint(str, sizeof str, "%s+%ld(SB)", s->name, a->offset);
break;
case D_STATIC:
if(s == S)
snprint(str, sizeof str, "<>+%ld(SB)", a->offset);
else
snprint(str, sizeof str, "%s<>+%ld(SB)", s->name, a->offset);
break;
case D_AUTO:
if(s == S)
snprint(str, sizeof str, "%ld(SP)", a->offset);
else
snprint(str, sizeof str, "%s-%ld(SP)", s->name, -a->offset);
break;
case D_PARAM:
if(s == S)
snprint(str, sizeof str, "%ld(FP)", a->offset);
else
snprint(str, sizeof str, "%s+%ld(FP)", s->name, a->offset);
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<sizeof(long); 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;
}
*p++ = (c>>6) + '0';
*p++ = ((c>>3) & 7) + '0';
*p++ = (c & 7) + '0';
}
*p = 0;
return fmtstrcpy(fp, str);
}
void
diag(char *fmt, ...)
{
char buf[STRINGSZ], *tn;
va_list arg;
tn = "??none??";
if(curtext != P && curtext->from.sym != S)
tn = curtext->from.sym->name;
va_start(arg, fmt);
vseprint(buf, buf+sizeof(buf), fmt, arg);
va_end(arg);
print("%s: %s\n", tn, buf);
nerrors++;
if(nerrors > 10) {
print("too many errors\n");
errorexit();
}
}