ref: f8467210359d5c4e576e8c4aa89177902517ec5b
dir: /sys/src/cmd/7a/lex.c/
#include <ctype.h>
#define EXTERN
#include "a.h"
#include "y.tab.h"
void
main(int argc, char *argv[])
{
char ofile[100], incfile[20], *p;
int nout, nproc, status, i, c, of;
thechar = '7'; /* of 9 */
thestring = "alpha";
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();
if(p)
include[ninclude++] = p;
break;
} ARGEND
if(*argv == 0) {
print("usage: %ca [-options] file.s\n", thechar);
errorexit();
}
nproc = 3;
if(p = getenv("NPROC"))
nproc = atol(p);
if(argc > 1) {
c = 0;
nout = 0;
for(;;) {
while(nout < nproc && argc > 0) {
i = fork();
if(i < 0) {
i = mywait(&status);
if(i < 0)
errorexit();
if(status)
c++;
nout--;
continue;
}
if(i == 0) {
print("%s:\n", *argv);
goto child;
}
nout++;
argc--;
argv++;
}
i = mywait(&status);
if(i < 0) {
if(c)
errorexit();
exits(0);
}
if(status)
c++;
nout--;
}
}
child:
strecpy(ofile, ofile+sizeof ofile, *argv);
if(p = strrchr(ofile, '/')) {
include[0] = ofile;
*p++ = 0;
} else
p = ofile;
if(outfile == 0) {
outfile = p;
if(p = strrchr(outfile, '.'))
if(p[1] == 's' && p[2] == 0)
p[0] = 0;
p = strrchr(outfile, 0);
p[0] = '.';
p[1] = thechar;
p[2] = 0;
}
if(0) {
strcpy(incfile, "/usr/%include");
p = strrchr(incfile, '%');
if(p)
*p = thechar;
} else {
strcpy(incfile, "/");
strcat(incfile, thestring);
strcat(incfile, "/include");
}
include[ninclude++] = incfile;
if(p = getenv("INCLUDE"))
include[ninclude-1] = p; /* */
of = mycreat(outfile, 0664);
if(of < 0) {
yyerror("%ca: cannot create %s", thechar, outfile);
errorexit();
}
Binit(&obuf, of, OWRITE);
pass = 1;
pinit(*argv);
for(i=0; i<nDlist; i++)
dodefine(Dlist[i]);
yyparse();
if(nerrors) {
cclean();
errorexit();
}
pass = 2;
outhist();
pinit(*argv);
for(i=0; i<nDlist; i++)
dodefine(Dlist[i]);
yyparse();
cclean();
if(nerrors)
errorexit();
exits(0);
}
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,
"R16", LREG, 16,
"R17", LREG, 17,
"R18", LREG, 18,
"R19", LREG, 19,
"R20", LREG, 20,
"R21", LREG, 21,
"R22", LREG, 22,
"R23", LREG, 23,
"R24", LREG, 24,
"R25", LREG, 25,
"R26", LREG, 26,
"R27", LREG, 27,
"R28", LREG, 28,
"R29", LREG, 29,
"R30", LREG, 30,
"R31", LREG, 31,
"P", LP, 0,
"I", LP, 32,
"A", LP, 64,
"IA", LP, 96,
"T", LP, 128,
"IT", LP, 32+128,
"AT", LP, 64+128,
"IAT", LP, 96+128,
"T0", LPREG, 0+128,
"T1", LPREG, 1+128,
"T2", LPREG, 2+128,
"T3", LPREG, 3+128,
"T4", LPREG, 4+128,
"T5", LPREG, 5+128,
"T6", LPREG, 6+128,
"T7", LPREG, 7+128,
"T8", LPREG, 8+128,
"T9", LPREG, 9+128,
"T10", LPREG, 10+128,
"T11", LPREG, 11+128,
"T12", LPREG, 12+128,
"T13", LPREG, 13+128,
"T14", LPREG, 14+128,
"T15", LPREG, 15+128,
"T16", LPREG, 16+128,
"T17", LPREG, 17+128,
"T18", LPREG, 18+128,
"T19", LPREG, 19+128,
"T20", LPREG, 20+128,
"T21", LPREG, 21+128,
"T22", LPREG, 22+128,
"T23", LPREG, 23+128,
"T24", LPREG, 24+128,
"T25", LPREG, 25+128,
"T26", LPREG, 26+128,
"T27", LPREG, 27+128,
"T28", LPREG, 28+128,
"T29", LPREG, 29+128,
"T30", LPREG, 30+128,
"T31", LPREG, 31+128,
"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,
"F16", LFREG, 16,
"F17", LFREG, 17,
"F18", LFREG, 18,
"F19", LFREG, 19,
"F20", LFREG, 20,
"F21", LFREG, 21,
"F22", LFREG, 22,
"F23", LFREG, 23,
"F24", LFREG, 24,
"F25", LFREG, 25,
"F26", LFREG, 26,
"F27", LFREG, 27,
"F28", LFREG, 28,
"F29", LFREG, 29,
"F30", LFREG, 30,
"F31", LFREG, 31,
"FPCR", LFPCR, 0,
"PCC", LPCC, 0,
/* 1: integer operates */
"ADDQ", LTYPE1, AADDQ,
"ADDL", LTYPE1, AADDL,
"SUBL", LTYPE1, ASUBL,
"SUBQ", LTYPE1, ASUBQ,
"CMPEQ", LTYPE1, ACMPEQ,
"CMPGT", LTYPE1, ACMPGT,
"CMPGE", LTYPE1, ACMPGE,
"CMPUGT", LTYPE1, ACMPUGT,
"CMPUGE", LTYPE1, ACMPUGE,
"CMPBLE", LTYPE1, ACMPBLE,
"AND", LTYPE1, AAND,
"ANDNOT", LTYPE1, AANDNOT,
"OR", LTYPE1, AOR,
"ORNOT", LTYPE1, AORNOT,
"XOR", LTYPE1, AXOR,
"XORNOT", LTYPE1, AXORNOT,
"CMOVEQ", LTYPE1, ACMOVEQ,
"CMOVNE", LTYPE1, ACMOVNE,
"CMOVLT", LTYPE1, ACMOVLT,
"CMOVGE", LTYPE1, ACMOVGE,
"CMOVLE", LTYPE1, ACMOVLE,
"CMOVGT", LTYPE1, ACMOVGT,
"CMOVLBS", LTYPE1, ACMOVLBS,
"CMOVLBC", LTYPE1, ACMOVLBC,
"MULL", LTYPE1, AMULL,
"MULQ", LTYPE1, AMULQ,
"UMULH", LTYPE1, AUMULH,
"DIVQ", LTYPE1, ADIVQ,
"MODQ", LTYPE1, AMODQ,
"DIVQU", LTYPE1, ADIVQU,
"MODQU", LTYPE1, AMODQU,
"DIVL", LTYPE1, ADIVL,
"MODL", LTYPE1, AMODL,
"DIVLU", LTYPE1, ADIVLU,
"MODLU", LTYPE1, AMODLU,
"SLLQ", LTYPE1, ASLLQ,
"SRLQ", LTYPE1, ASRLQ,
"SRAQ", LTYPE1, ASRAQ,
"SLLL", LTYPE1, ASLLL,
"SRLL", LTYPE1, ASRLL,
"SRAL", LTYPE1, ASRAL,
"EXTBL", LTYPE1, AEXTBL,
"EXTWL", LTYPE1, AEXTWL,
"EXTLL", LTYPE1, AEXTLL,
"EXTQL", LTYPE1, AEXTQL,
"EXTWH", LTYPE1, AEXTWH,
"EXTLH", LTYPE1, AEXTLH,
"EXTQH", LTYPE1, AEXTQH,
"INSBL", LTYPE1, AINSBL,
"INSWL", LTYPE1, AINSWL,
"INSLL", LTYPE1, AINSLL,
"INSQL", LTYPE1, AINSQL,
"INSWH", LTYPE1, AINSWH,
"INSLH", LTYPE1, AINSLH,
"INSQH", LTYPE1, AINSQH,
"MSKBL", LTYPE1, AMSKBL,
"MSKWL", LTYPE1, AMSKWL,
"MSKLL", LTYPE1, AMSKLL,
"MSKQL", LTYPE1, AMSKQL,
"MSKWH", LTYPE1, AMSKWH,
"MSKLH", LTYPE1, AMSKLH,
"MSKQH", LTYPE1, AMSKQH,
"ZAP", LTYPE1, AZAP,
"ZAPNOT", LTYPE1, AZAPNOT,
/* 2: floating operates with 2 operands */
"CVTQS", LTYPE2, ACVTQS,
"CVTQT", LTYPE2, ACVTQT,
"CVTTS", LTYPE2, ACVTTS,
"CVTTQ", LTYPE2, ACVTTQ,
"CVTLQ", LTYPE2, ACVTLQ,
"CVTQL", LTYPE2, ACVTQL,
/* 3: floating operates with 2 or 3 operands */
"CPYS", LTYPE3, ACPYS,
"CPYSN", LTYPE3, ACPYSN,
"CPYSE", LTYPE3, ACPYSE,
"ADDS", LTYPE3, AADDS,
"ADDT", LTYPE3, AADDT,
"CMPTEQ", LTYPE3, ACMPTEQ,
"CMPTGT", LTYPE3, ACMPTGT,
"CMPTGE", LTYPE3, ACMPTGE,
"CMPTUN", LTYPE3, ACMPTUN,
"DIVS", LTYPE3, ADIVS,
"DIVT", LTYPE3, ADIVT,
"MULS", LTYPE3, AMULS,
"MULT", LTYPE3, AMULT,
"SUBS", LTYPE3, ASUBS,
"SUBT", LTYPE3, ASUBT,
"FCMOVEQ", LTYPE3, AFCMOVEQ,
"FCMOVNE", LTYPE3, AFCMOVNE,
"FCMOVLT", LTYPE3, AFCMOVLT,
"FCMOVGE", LTYPE3, AFCMOVGE,
"FCMOVLE", LTYPE3, AFCMOVLE,
"FCMOVGT", LTYPE3, AFCMOVGT,
/* 4: integer load/store and reg->reg (incl special regs) */
"MOVQ", LTYPE4, AMOVQ,
/* 5: integer load/store and reg->reg */
"MOVL", LTYPE5, AMOVL,
"MOVQU", LTYPE5, AMOVQU,
"MOVB", LTYPE5, AMOVB,
"MOVBU", LTYPE5, AMOVBU,
"MOVW", LTYPE5, AMOVW,
"MOVWU", LTYPE5, AMOVWU,
"MOVLP", LTYPE5, AMOVLP,
"MOVQP", LTYPE5, AMOVQP,
/* 6: integer load/store (only) */
"MOVA", LTYPE6, AMOVA,
"MOVAH", LTYPE6, AMOVAH,
"MOVLL", LTYPE6, AMOVLL,
"MOVQL", LTYPE6, AMOVQL,
"MOVLC", LTYPEK, AMOVLC,
"MOVQC", LTYPEK, AMOVQC,
/* 7: floating load/store and reg->reg */
"MOVS", LTYPE7, AMOVS,
"MOVT", LTYPE7, AMOVT,
/* 8,9: jumps */
"JMP", LTYPE8, AJMP,
"JSR", LTYPE8, AJSR,
"RET", LTYPE9, ARET,
/* A: integer conditional branches */
"BEQ", LTYPEA, ABEQ,
"BNE", LTYPEA, ABNE,
"BLT", LTYPEA, ABLT,
"BGE", LTYPEA, ABGE,
"BLE", LTYPEA, ABLE,
"BGT", LTYPEA, ABGT,
"BLBC", LTYPEA, ABLBC,
"BLBS", LTYPEA, ABLBS,
/* B: floating conditional branches */
"FBEQ", LTYPEB, AFBEQ,
"FBNE", LTYPEB, AFBNE,
"FBLT", LTYPEB, AFBLT,
"FBGE", LTYPEB, AFBGE,
"FBLE", LTYPEB, AFBLE,
"FBGT", LTYPEB, AFBGT,
/* C-J: miscellaneous */
"TRAPB", LTYPEC, ATRAPB,
"MB", LTYPEC, AMB,
"REI", LTYPEC, AREI,
"END", LTYPEC, AEND,
"FETCH", LTYPED, AFETCH,
"FETCHM", LTYPED, AFETCHM,
"CALL_PAL", LTYPEE, ACALL_PAL,
"TEXT", LTYPEF, ATEXT,
"GLOBL", LTYPEF, AGLOBL,
"DATA", LTYPEG, ADATA,
"WORD", LTYPEH, AWORD,
"NOP", LTYPEI, ANOP,
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;
}
ALLOCN(pathname, 0, 100);
if(getwd(pathname, 99) == 0) {
ALLOCN(pathname, 100, 900);
if(getwd(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, &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)
{
vlong 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_PREG:
case D_FCREG:
case D_PCC:
break;
case D_OREG:
case D_CONST:
case D_BRANCH:
l = a->offset;
Bputc(&obuf, l);
Bputc(&obuf, l>>8);
Bputc(&obuf, l>>16);
Bputc(&obuf, l>>24);
Bputc(&obuf, l>>32);
Bputc(&obuf, l>>40);
Bputc(&obuf, l>>48);
Bputc(&obuf, l>>56);
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;
}
}
void
outcode(int a, Gen *g1, int reg, Gen *g2)
{
int sf, st, t;
Sym *s;
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, 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;
int n;
g = nullgen;
for(h = hist; h != H; h = h->link) {
p = h->name;
op = 0;
if(p && p[0] != '/' && h->offset == 0 && pathname && pathname[0] == '/') {
op = p;
p = pathname;
}
while(p) {
q = strchr(p, '/');
if(q) {
n = q-p;
if(n == 0)
n = 1; /* leading "/" */
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, 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"