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ack/util/cgg/main.c
David Given 9f23fbbe6a Allow machines to use cg if they wish. 
--HG--
rename : mach/proto/ncg/build.mk => mach/proto/cg/build.mk
rename : util/ncgg/build.mk => util/cgg/build.mk
2015-03-23 00:08:51 +01:00

1017 lines
22 KiB
C
Raw Blame History

#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <ctype.h>
#include <string.h>
#include <em_spec.h>
#include <em_flag.h>
#include <em_reg.h>
#include "booth.h"
char * myalloc(n) {
register char *p;
p= malloc((unsigned)n);
if (p==0) {
yyerror("Out of core");
exit(1);
}
return(p);
}
tstint(e) expr_t e; {
if(e.expr_typ != TYPINT)
yyerror("Must be integer expression");
}
tstbool(e) expr_t e; {
if(e.expr_typ != TYPBOOL)
yyerror("Must be boolean expression");
}
structsize(s) register list2 s; {
register list1 l;
register sum;
sum = 0;
while ( s != 0 ) {
l = s->l2list->l1next;
while ( l != 0 ) {
sum++;
l = l->l1next;
}
s = s->l2next;
}
return(sum);
}
list2 lookstruct(ll) list2 ll; {
list3 l3;
list2 l21,l22;
list1 l11,l12;
for (l3=structpool;l3 != 0;l3=l3->l3next) {
for (l21=l3->l3list,l22=ll;l21!=0 && l22!=0;
l21=l21->l2next,l22=l22->l2next) {
for(l11=l21->l2list,l12=l22->l2list;
l11!=0 && l12!=0 && strcmp(l11->l1name,l12->l1name)==0;
l11=l11->l1next,l12=l12->l1next)
;
if (l11!=0 || l12!=0)
goto contin;
}
if(l21==0 && l22==0)
return(l3->l3list);
contin:;
}
l3 = (list3) myalloc(sizeof(struct list3str));
l3->l3next=structpool;
l3->l3list=ll;
structpool=l3;
return(ll);
}
instno(inst) inst_t inst; {
register i,j;
for(i=1;i<narinstance;i++) {
if (arinstance[i].in_which != inst.in_which)
continue;
for(j=0;j<TOKENSIZE;j++)
if(arinstance[i].in_info[j] != inst.in_info[j])
goto cont;
return(i);
cont:;
}
chktabsiz(narinstance,MAXINSTANCE,"Instance table");
arinstance[narinstance] = inst;
return(narinstance++);
}
string scopy(s) string s; {
register string t;
t = (char *) myalloc(strlen(s)+1);
strcpy(t,s);
return(t);
}
strlookup(s) string s; {
register i;
for(i=0;i<ncodestrings;i++)
if(strcmp(s,codestrings[i])==0)
return(i);
chktabsiz(ncodestrings,MAXSTRINGS,"string table");
codestrings[ncodestrings] = scopy(s);
return(ncodestrings++);
}
stringno(s) register string s; {
char buf[256];
register char *p=buf;
while(*s != 0) switch(*s) {
default:
*p++ = *s++;
continue;
case '$':
s++;
switch(*s) {
default:
yyerror("Bad character after $ in codestring");
case '$':
*p++ = *s++;
continue;
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
*p++ = argtyp(patmnem[*s-'0']) == TYPINT ?
PR_EMINT : PR_EMSTR;
*p++ = *s++ -'0';
continue;
}
case '%':
s++;
if (*s != '[') {
if(*s == '%') {
*p++ = *s++;
continue;
} else
yyerror("Bad character following %% in codestring");
} else
s++;
if(isdigit(*s)) {
int num;
num = *s++ - '0';
if (num<1 || num>tokpatlen)
yyerror("Number within %[] out of range");
if (*s == ']') {
s++;
*p++ = PR_TOK;
*p++ = num;
} else if (*s++ != '.')
yyerror("Bad character following %%[digit in codestring");
else {
char field[256];
register char *f=field;
int type,offset;
while( *s != ']' && *s != 0)
*f++ = *s++;
*f++ = 0;
if (*s != ']')
yyerror("Unterminated %[] construction in codestring");
else
s++;
if (isdigit(field[0])) {
chkregexp(pattokexp[num]);
*p++ = PR_SUBREG;
*p++ = num;
*p++ = atoi(field);
} else {
offset = findstructel(pattokexp[num],field,&type);
*p++ = PR_TOKFLD;
*p++ = num;
*p++ = offset;
}
}
} else if (*s >= 'a' && *s < 'a'+nallreg) {
int reg,subreg;
reg = *s++ -'a'+1;
if(*s == ']')
subreg = 255;
else {
if (*s != '.')
yyerror("Bad character following %%[x in codestring");
s++;
if(!isdigit(*s))
yyerror("Bad character following %%[x. in codestring");
subreg = *s - '0';
s++;
if(*s != ']')
yyerror("Bad character following %%[x.y in codestring");
}
s++;
*p++ = PR_ALLREG;
*p++ = reg;
*p++ = subreg;
} else
yyerror("Bad character following %%[ in codestring");
}
*p++ = 0;
return(strlookup(buf));
}
tabovf(tablename) string tablename; {
char buf[256];
sprintf(buf,"%s overflow",tablename);
yyerror(buf);
exit(-1);
}
main(argc,argv) char *argv[]; {
while (--argc) {
++argv;
if (argv[0][0]=='-') {
switch (argv[0][1]) {
case 'h':
hname= &argv[0][2];
break;
case 'c':
cname= &argv[0][2];
break;
default:
fprintf(stderr,"Bad flag %s\n",argv[0]);
break;
}
} else {
iname= argv[0];
}
}
inithash();
initio();
inittables();
yyparse();
if (nerrors==0) {
compueq();
hashpatterns();
finishio();
verbose();
}
debug();
exit(nerrors);
}
lookup(comm,operator,lnode,rnode) {
register node_p p;
for (p=nodes+1;p<lastnode;p++) {
if (p->ex_operator != operator)
continue;
if (!(p->ex_lnode == lnode && p->ex_rnode == rnode ||
comm && p->ex_lnode == rnode && p->ex_rnode == lnode))
continue;
return(p-nodes);
}
if (lastnode >= &nodes[MAXNODES])
yyerror("node table overflow");
lastnode++;
p->ex_operator = operator;
p->ex_lnode = lnode;
p->ex_rnode = rnode;
return(p-nodes);
}
compueq() {
register i,j;
for (i=1;i<nmachregs;i++) {
for (j=1;j<i;j++)
if (eqregclass(i,j)) {
stregclass[i] = stregclass[j];
break;
}
if (j==i)
stregclass[i] = nregclasses++;
}
}
eqregclass(r1,r2) {
register reginfo rp1,rp2;
register i;
short regbits[(MAXREGS+15)>>4];
int member;
rp1 = machregs[r1]; rp2 = machregs[r2];
for (i=0;i<((nprops+15)>>4);i++)
if (rp1->rprop[i] != rp2->rprop[i])
return(0);
for (i=0;i<((MAXREGS+15)>>4);i++)
regbits[i] = 0;
for (i=0;i<maxmembers;i++) {
if (member = rp1->rmembers[i])
regbits[member>>4] |= (1<<(member&017));
}
for (i=0;i<maxmembers;i++) {
member = rp2->rmembers[i];
if (regbits[member>>4]&(1<<(member&017)))
return(0);
}
return(1);
}
unsigned hash(name) register string name; {
register unsigned sum;
register i;
for (sum=i=0;*name;i+=3)
sum ^= (*name++)<<(i&07);
return(sum);
}
ident_p ilookup(name,enterf) string name; int enterf; {
register ident_p p,*pp;
pp = &identtab[hash(name)%ITABSIZE];
while (*pp != 0) {
if (strcmp((*pp)->i_name,name)==0)
if (enterf != ENTER)
return(*pp);
else
yyerror("Multiply defined symbol");
pp = &(*pp)->i_next;
}
if (enterf == LOOKUP)
yyerror("Undefined symbol");
if (enterf == JUSTLOOKING)
return(0);
p = *pp = (ident_p) myalloc(sizeof(ident_t));
p->i_name = name;
p->i_next = 0;
p->i_type = 0;
return(p);
}
initio() {
if (iname!=0 && freopen(iname,"r",stdin)==NULL) {
fprintf(stderr,"Can't open %s\n",iname);
exit(-1);
}
if ((cfile=fopen(cname,"w"))==NULL) {
fprintf(stderr,"Can't create %s\n",cname);
exit(-1);
}
if ((hfile=fopen(hname,"w"))==NULL) {
fprintf(stderr,"Can't create %s\n",hname);
exit(-1);
}
fprintf(cfile,"#include \"param.h\"\n");
fprintf(cfile,"#include \"tables.h\"\n");
fprintf(cfile,"#include \"types.h\"\n");
fprintf(cfile,"#include <cg_pattern.h>\n");
fprintf(cfile,"#include \"data.h\"\n");
fprintf(cfile,"\nbyte coderules[] = {\n");
patbyte(0);
}
exprlookup(sett) set_t sett; {
register i,j,ok;
for(i=0;i<nmachsets;i++) {
ok= (sett.set_size == machsets[i].set_size);
for(j=0;j<SETSIZE;j++) {
if (sett.set_val[j] == machsets[i].set_val[j])
continue;
ok=0;
break;
}
if (ok)
return(i);
}
chktabsiz(nmachsets,MAXSETS,"Expression table");
machsets[nmachsets] = sett;
return(nmachsets++);
}
inittables() {
register reginfo r;
register i;
inst_t inst;
set_t sett;
nodes[0].ex_operator=EX_CON;
nodes[0].ex_lnode=0;
nodes[0].ex_rnode=0;
cocopropno=nprops++;
r=(reginfo)myalloc(sizeof(struct reginfo));
r->rname = "cc reg";
r->rrepr = "CC";
r->rsize = -1;
r->rregvar= -1;
for(i=0;i<MAXMEMBERS;i++)
r->rmembers[i] = 0;
for(i=0;i<PROPSETSIZE;i++)
r->rprop[i] = 0;
r->rprop[cocopropno>>4] |= (1<<(cocopropno&017));
chktabsiz(nmachregs,MAXREGS,"Register table");
machregs[nmachregs++] = r;
inst.in_which = IN_RIDENT;
inst.in_info[0] = nmachregs-1;
for(i=1;i<TOKENSIZE;i++)
inst.in_info[i]=0;
ccinstanceno=instno(inst);
ccregexpr=lookup(0,EX_REG,nmachregs-1,0);
sett.set_size=0;
for (i=0;i<SETSIZE;i++)
sett.set_val[i]=0;
sett.set_val[nmachregs>>4] |= (01<<(nmachregs&017));
cocosetno=exprlookup(sett);
}
outregs() {
register i,j,k;
static short rset[(MAXREGS+15)>>4];
int t,ready;
fprintf(cfile,"char stregclass[] = {\n");
for (i=0;i<nmachregs;i++)
fprintf(cfile,"\t%d,\n",stregclass[i]);
fprintf(cfile,"};\n\nstruct reginfo machregs[] = {\n{0},\n");
for (i=1;i<nmachregs;i++) {
fprintf(cfile,"{%d,%d",strlookup(machregs[i]->rrepr),
machregs[i]->rsize);
if (maxmembers!=0) {
fprintf(cfile,",{");
for(j=0;j<maxmembers;j++)
fprintf(cfile,"%d,",machregs[i]->rmembers[j]);
/* now compute and print set of registers
* that clashes with this register.
* A register clashes with al its children (and theirs)
* and with all their parents.
*/
for (j=0;j<((MAXREGS+15)>>4);j++)
rset[j]=0;
rset[i>>4] |= (1<<(i&017));
do {
ready=1;
for (j=1;j<nmachregs;j++)
if (rset[j>>4]&(1<<(j&017)))
for (k=0;k<maxmembers;k++)
if ((t=machregs[j]->rmembers[k])!=0) {
if ((rset[t>>4]&(1<<(t&017)))==0)
ready=0;
rset[t>>4] |= (1<<(t&017));
}
} while (!ready);
do {
ready=1;
for (j=1;j<nmachregs;j++)
for (k=0;k<maxmembers;k++)
if ((t=machregs[j]->rmembers[k])!=0)
if (rset[t>>4]&(1<<(t&017))) {
if (rset[j>>4]&(1<<(j&017))==0)
ready=0;
rset[j>>4] |= (1<<(j&017));
}
} while (!ready);
fprintf(cfile,"},{");
for (j=0;j<((nmachregs+15)>>4);j++)
fprintf(cfile,"%d,",rset[j]);
fprintf(cfile,"}");
}
if (machregs[i]->rregvar>=0)
fprintf(cfile,",1");
fprintf(cfile,"},\n");
}
fprintf(cfile,"};\n\n");
}
finishio() {
register i;
register node_p np;
int j;
int setsize;
register move_p mp;
fprintf(cfile,"};\n\n");
if (wsize>0)
fprintf(hfile,"#define TEM_WSIZE %d\n",wsize);
else
yyerror("Wordsize undefined");
if (psize>0)
fprintf(hfile,"#define TEM_PSIZE %d\n",psize);
else
yyerror("Pointersize undefined");
if (bsize>=0)
fprintf(hfile,"#define TEM_BSIZE %d\n",bsize);
else
yyerror("EM_BSIZE undefined");
if (fmt!=0)
fprintf(hfile,"#define WRD_FMT \"%s\"\n",fmt);
fprintf(hfile,"#define MAXALLREG %d\n",maxallreg);
setsize = (nmachregs+1 + nmachtokens + 15)>>4;
fprintf(hfile,"#define SETSIZE %d\n",setsize);
fprintf(hfile,"#define NPROPS %d\n",nprops);
fprintf(hfile,"#define NREGS %d\n",nmachregs);
fprintf(hfile,"#define REGSETSIZE %d\n",(nmachregs+15)>>4);
fprintf(hfile,"#define TOKENSIZE %d\n",maxtokensize);
fprintf(hfile,"#define MAXMEMBERS %d\n",maxmembers);
fprintf(hfile,"#define LONGESTPATTERN %d\n",maxempatlen);
fprintf(hfile,"#define MAXRULE %d\n",maxrule);
fprintf(hfile,"#define NMOVES %d\n",nmoves);
fprintf(hfile,"#define NC1 %d\n",nc1);
if (nc2) {
assert(maxsplit!=0);
fprintf(hfile,"#define NC2 %d\n",nc2);
fprintf(hfile,"#define MAXSPLIT %d\n",maxsplit);
}
fprintf(hfile,"#define NC3 %d\n",nc3);
outregs();
fprintf(cfile,"tkdef_t tokens[] = {\n");
for(i=0;i<nmachtokens;i++) {
fprintf(cfile,"{%d,{%d,%d},{",machtokens[i].t_size,
machtokens[i].t_cost.c_size,
machtokens[i].t_cost.c_time);
for(j=0;j<maxtokensize;j++)
fprintf(cfile,"%d,",machtokens[i].t_fields[j].t_type);
fprintf(cfile,"},%d},\n",machtokens[i].t_format);
}
fprintf(cfile,"};\n\nnode_t enodes[] = {\n");
for(np=nodes;np<lastnode;np++)
fprintf(cfile,"{%d,%d,%d},\n",np->ex_operator,np->ex_lnode,
np->ex_rnode);
fprintf(cfile,"};\n\nstring codestrings[] = {\n");
for(i=0;i<ncodestrings;i++) {
register char *p;
p=codestrings[i];
fprintf(cfile,"\t\"");
while (*p) {
register int c = (*p) & BMASK;
if (! isascii(c) || iscntrl(c)) {
/* The next line used to have (c>>6)&03,
but this triggered a bug in GCC 2.4.5
on SPARC.
*/
fprintf(cfile,"\\%c%c%c",((*p>>6) &03)+'0',
((c>>3)&07)+'0',(c&07)+'0');
}
else putc(c, cfile);
p++;
}
fprintf(cfile,"\",\n");
}
fprintf(cfile,"};\n\nset_t machsets[] = {\n");
for(i=0;i<nmachsets;i++) {
fprintf(cfile,"{%d,{",machsets[i].set_size);
for(j=0;j<setsize;j++)
fprintf(cfile,"0%o,",machsets[i].set_val[j] & 0xFFFF);
fprintf(cfile,"}},\n");
}
fprintf(cfile,"};\n\ninst_t tokeninstances[] = {\n");
for(i=0;i<narinstance;i++) {
fprintf(cfile,"{ %d, {",arinstance[i].in_which);
for(j=0;j<=maxtokensize;j++)
fprintf(cfile,"%d,",arinstance[i].in_info[j]);
fprintf(cfile,"}},\n");
}
fprintf(cfile,"};\n\nmove_t moves[] = {\n");
for (i=0;i<nmoves;i++) {
mp = &machmoves[i];
fprintf(cfile,"{%d,%d,%d,%d,%d,{%d,%d}},\n",
mp->m_set1, mp->m_expr1,
mp->m_set2, mp->m_expr2,
mp->m_cindex,
mp->m_cost.c_size,mp->m_cost.c_time);
}
fprintf(cfile,"};\n\nbyte pattern[] = {\n");
for (i=0;i<npatbytes;i++) {
fprintf(cfile,"%3d,",pattern[i]&BMASK);
if ((i%10)==9)
fprintf(cfile,"\n");
}
fprintf(cfile,"\n};\n\nint pathash[256] = {\n");
for(i=0;i<256;i++) {
fprintf(cfile,"%6d,",pathash[i]);
if((i&07)==07)
fprintf(cfile,"\n");
}
fprintf(cfile,"};\n\nc1_t c1coercs[] = {\n");
for (i=0;i<nc1;i++)
fprintf(cfile,"{%d,%d,%d,%d,{%d,%d}},\n",
c1coercs[i].c1_texpno,
c1coercs[i].c1_expr,
c1coercs[i].c1_prop,
c1coercs[i].c1_codep,
c1coercs[i].c1_cost.c_size,
c1coercs[i].c1_cost.c_time);
if (nc2)
fprintf(cfile,"};\n\nc2_t c2coercs[] = {\n");
for (i=0;i<nc2;i++) {
fprintf(cfile,"{%d,%d,{",
c2coercs[i].c2_texpno,
c2coercs[i].c2_nsplit);
for (j=0;j<maxsplit;j++)
fprintf(cfile,"%d,",c2coercs[i].c2_repl[j]);
fprintf(cfile,"},%d},\n",c2coercs[i].c2_codep);
}
fprintf(cfile,"};\n\nc3_t c3coercs[] = {\n");
for (i=0;i<nc3;i++)
fprintf(cfile,"{%d,%d,%d,%d},\n",
c3coercs[i].c3_texpno,
c3coercs[i].c3_prop,
c3coercs[i].c3_repl,
c3coercs[i].c3_codep);
fprintf(cfile,"};\n\n");
for (i=0;i<nprops;i++) {
fprintf(cfile,"struct reginfo *rlist%d[] = {\n",i);
for (j=2;j<=nmachregs;j++) {
if (machregs[j-1]->rregvar<0 &&
(machprops[i].propset.set_val[j>>4]&(1<<(j&017))))
fprintf(cfile,"\t&machregs[%d],\n",j-1);
}
fprintf(cfile,"\t0\n};\n");
}
fprintf(cfile,"struct reginfo **reglist[] = {\n");
for (i=0;i<nprops;i++) {
fprintf(cfile,"\trlist%d,\n",i);
}
fprintf(cfile,"};\n");
fprintf(cfile,"unsigned cc1 = %u;\n",cc1);
fprintf(cfile,"unsigned cc2 = %u;\n",cc2);
fprintf(cfile,"unsigned cc3 = %u;\n",cc3);
fprintf(cfile,"unsigned cc4 = %u;\n",cc4);
if (rvused)
outregvar();
}
outregvar() {
register i,j;
fprintf(hfile,"#define REGVARS\n");
fprintf(cfile,"#include \"regvar.h\"\n");
fprintf(cfile,"int nregvar[4] = { ");
for (i=0;i<4;i++) fprintf(cfile,"%d, ",nregvar[i]);
fprintf(cfile,"};\n");
for (i=0;i<4;i++)
if (nregvar[i]>0)
fprintf(cfile,"struct regassigned ratar%d[%d];\n",
i,nregvar[i]);
for (i=0;i<4;i++) if (nregvar[i]>0) {
fprintf(cfile,"int rvtar%d[] = {",i);
for (j=0;j<nregvar[i];j++)
fprintf(cfile,"%d,",rvnumbers[i][j]);
fprintf(cfile,"};\n");
}
fprintf(cfile,"\nint *rvnumbers[] = {\n");
for (i=0;i<4;i++)
if (nregvar[i]>0)
fprintf(cfile,"\trvtar%d,\n",i);
else
fprintf(cfile,"\t0,\n");
fprintf(cfile,"};\n\nstruct regassigned *regassigned[] = {\n");
for (i=0;i<4;i++)
if (nregvar[i]>0)
fprintf(cfile,"\tratar%d,\n",i);
else
fprintf(cfile,"\t0,\n");
fprintf(cfile,"};\n");
}
verbose() {
fprintf(stderr,"Codebytes %d\n",codebytes);
fprintf(stderr,"Registers %d(%d)\n",nmachregs,MAXREGS);
fprintf(stderr,"Properties %d(%d)\n",nprops,MAXPROPS);
fprintf(stderr,"Tokens %d(%d)\n",nmachtokens,MAXTOKENS);
fprintf(stderr,"Sets %d(%d)\n",nmachsets,MAXSETS);
fprintf(stderr,"Tokeninstances %d(%d)\n",narinstance,MAXINSTANCE);
fprintf(stderr,"Strings %d(%d)\n",ncodestrings,MAXSTRINGS);
fprintf(stderr,"Enodes %d(%d)\n",lastnode-nodes,MAXNODES);
fprintf(stderr,"Patbytes %d(%d)\n",npatbytes,MAXPATTERN);
}
inbetween() {
register ident_p ip;
register i,j;
register move_p mp;
lookident=1; /* for lexical analysis */
chktabsiz(nmachsets+1,MAXSETS,"Expressiontable");
for (i=0;i<SETSIZE;i++)
machsets[nmachsets].set_val[i] = 0xFFFF;
machsets[nmachsets].set_val[0] &= ~1;
machsets[nmachsets].set_size = 0;
ip=ilookup("SCRATCH",ENTER);
ip->i_type=IEXP;
ip->i_i.i_expno = nmachsets++;
for (i=0;i<SETSIZE;i++)
machsets[nmachsets].set_val[i] = 0xFFFF;
machsets[nmachsets].set_size = 0;
ip=ilookup("ALL",ENTER);
ip->i_type=IEXP;
allexpno = ip->i_i.i_expno = nmachsets++;
mp = &machmoves[nmoves++];
mp->m_set1 = cocosetno;
mp->m_expr1 = 0;
mp->m_set2 = nmachsets-1;
mp->m_expr2 = 0;
mp->m_cindex = 0;
mp->m_cost.c_size = 0;
mp->m_cost.c_time = 0;
/*
* Create sets of registers per property
*/
for (i=0;i<nprops;i++) {
short *sp = machprops[i].propset.set_val;
sp[0] |= 1;
for (j=2;j<=nmachregs;j++)
if (machregs[j-1]->rprop[i>>4]&(1<<(i&017)))
sp[j>>4] |= (1<<(j&017));
}
}
formconversion(p,tp) register char *p; register token_p tp; {
char buf[256];
register char *q=buf;
char field[256];
register char *f;
int i;
if (p==0)
return(0);
while (*p) switch(*p) {
default: *q++ = *p++; continue;
case '%':
p++;
if(*p == '%') {
*q++ = *p++;
continue;
}
if (*p == '[')
p++;
else
yyerror("Bad character after % in format");
f=field;
while (*p != 0 && *p != ']')
*f++ = *p++;
*f++ = 0;
if (*p == ']')
p++;
else
yyerror("Unterminated %[] construct in format");
for (i=0;i<TOKENSIZE-1;i++)
if (strcmp(field,tp->t_fields[i].t_sname)==0)
break;
if (i==TOKENSIZE-1)
yyerror("Unknown field in %[] construct in format");
*q++ = i+1;
}
*q++ = 0;
return(strlookup(buf));
}
setfields(tp,format) register token_p tp; string format; {
register i;
list2 ll;
register list1 l;
int type;
for(i=0;i<TOKENSIZE-1;i++)
tp->t_fields[i].t_type = 0;
i=0;
for(ll=tp->t_struct;ll!=0;ll=ll->l2next) {
l=ll->l2list;
if(strcmp(l->l1name,"REGISTER")==0)
type = TYPREG;
else if (strcmp(l->l1name,"INT")==0)
type = TYPINT;
else type = TYPSTR;
for(l=l->l1next;l!=0;l=l->l1next) {
tp->t_fields[i].t_type = type;
tp->t_fields[i].t_sname = l->l1name;
i++;
}
}
if (format != 0)
tp->t_format = formconversion(format,tp);
else
tp->t_format = -1;
}
chkregexp(number) {
register i;
for(i=nmachregs+1;i<nmachregs+1+nmachtokens;i++)
if(machsets[number].set_val[i>>4]&(01<<(i&017)))
yyerror("No tokens allowed in this set");
}
findstructel(number,name,t) string name; int *t; {
register i;
register token_p tp;
register list2 structdecl;
int offset;
for(i=1;i<=nmachregs;i++)
if (machsets[number].set_val[i>>4]&(01<<(i&017)))
yyerror("No registers allowed in this set");
structdecl = 0;
for (i=nmachregs+1;i<nmachregs+1+nmachtokens;i++) {
if (machsets[number].set_val[i>>4]&(01<<(i&017))) {
if (structdecl == 0) {
structdecl = machtokens[i-(nmachregs+1)].t_struct;
tp = &machtokens[i-(nmachregs+1)];
} else if(structdecl != machtokens[i-(nmachregs+1)].t_struct)
yyerror("Multiple structs in this set");
}
}
if (structdecl == 0) {
yyerror("No structs in this set");
return(0);
}
for(offset=0;offset<TOKENSIZE-1;offset++)
if(tp->t_fields[offset].t_type != 0 &&
strcmp(tp->t_fields[offset].t_sname,name)==0) {
*t = tp->t_fields[offset].t_type;
return(offset+1);
}
yyerror("No such field in this struct");
return(0);
}
extern char em_flag[];
argtyp(mn) {
switch(em_flag[mn-sp_fmnem]&EM_PAR) {
case PAR_W:
case PAR_S:
case PAR_Z:
case PAR_O:
case PAR_N:
case PAR_L:
case PAR_F:
case PAR_R:
case PAR_C:
return(TYPINT);
default:
return(TYPSTR);
}
}
commontype(e1,e2) expr_t e1,e2; {
if(e1.expr_typ != e2.expr_typ)
yyerror("Type incompatibility");
return(e1.expr_typ);
}
extern char em_mnem[][4];
#define HASHSIZE (2*(sp_lmnem-sp_fmnem))
struct hashmnem {
char h_name[3];
byte h_value;
} hashmnem[HASHSIZE];
inithash() {
register i;
for(i=0;i<=sp_lmnem-sp_fmnem;i++)
enter(em_mnem[i],i+sp_fmnem);
}
enter(name,value) char *name; {
register unsigned h;
h=hash(name)%HASHSIZE;
while (hashmnem[h].h_name[0] != 0)
h = (h+1)%HASHSIZE;
strncpy(hashmnem[h].h_name,name,3);
hashmnem[h].h_value = value;
}
int mlookup(name) char *name; {
register unsigned h;
h = hash(name)%HASHSIZE;
while (strncmp(hashmnem[h].h_name,name,3) != 0 &&
hashmnem[h].h_name[0] != 0)
h = (h+1)%HASHSIZE;
return(hashmnem[h].h_value&BMASK); /* 0 if not found */
}
hashpatterns() {
short index;
register byte *bp,*tp;
register short i;
unsigned short hashvalue;
int patlen;
index = prevind;
while (index != 0) {
bp = &pattern[index];
tp = &bp[PO_MATCH];
i = *tp++&BMASK;
if (i==BMASK) {
i = *tp++&BMASK;
i |= (*tp++&BMASK)<<BSHIFT;
}
patlen = i;
hashvalue = 0;
switch(patlen) {
default: /* 3 or more */
hashvalue = (hashvalue<<4)^(*tp++&BMASK);
case 2:
hashvalue = (hashvalue<<4)^(*tp++&BMASK);
case 1:
hashvalue = (hashvalue<<4)^(*tp++&BMASK);
}
assert(hashvalue!= ILLHASH);
i=index;
index = (bp[PO_NEXT]&BMASK)|(bp[PO_NEXT+1]<<BSHIFT);
bp[PO_HASH] = hashvalue>>BSHIFT;
hashvalue &= BMASK;
bp[PO_NEXT] = pathash[hashvalue]&BMASK;
bp[PO_NEXT+1] = pathash[hashvalue]>>BSHIFT;
pathash[hashvalue] = i;
}
}
debug() {
register i,j;
for(i=0;i<ITABSIZE;i++) {
register ident_p ip;
for(ip=identtab[i];ip!=0;ip=ip->i_next)
printf("%-14s %1d %3d\n",ip->i_name,
ip->i_type,ip->i_i.i_regno);
}
for(i=2;i<nmachregs;i++) {
register reginfo rp;
rp=machregs[i];
printf("%s = (\"%s\", %d",rp->rname,rp->rrepr,rp->rsize);
for(j=0;j<MAXMEMBERS;j++)
if(rp->rmembers[j] != 0)
printf(", %s",machregs[rp->rmembers[j]]->rname);
printf(")");
for(j=0;j<nprops;j++)
if(rp->rprop[j>>4]&(1<<(j&017)))
printf(", %s",machprops[j].propname->i_name);
printf(".\n");
}
}
out(n) {
assert(n>=0);
if (n<128)
outbyte(n);
else {
outbyte(n/256+128);
outbyte(n%256);
}
}
outbyte(n) {
fprintf(cfile,"%d, ",n&BMASK);
codebytes++;
}
pat(n) {
assert(n>=0);
if (n<128)
patbyte(n);
else {
patbyte(n/256+128);
patbyte(n%256);
}
}
patshort(n) {
patbyte(n&BMASK);
patbyte(n>>BSHIFT);
}
patbyte(n) {
chktabsiz(npatbytes,MAXPATTERN,"Pattern table");
pattern[npatbytes++] = n;
}
max(a,b) {
if (a>b)
return(a);
return(b);
}
int yywrap(void) {
return 1;
}
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