ref: cd747191012d0420ac631340d962da1f80cef0a5
dir: /sys/src/cmd/spin/pangen1.c/
/***** spin: pangen1.c *****/
/* Copyright (c) 1989-2003 by Lucent Technologies, Bell Laboratories. */
/* All Rights Reserved. This software is for educational purposes only. */
/* No guarantee whatsoever is expressed or implied by the distribution of */
/* this code. Permission is given to distribute this code provided that */
/* this introductory message is not removed and no monies are exchanged. */
/* Software written by Gerard J. Holzmann. For tool documentation see: */
/* http://spinroot.com/ */
/* Send all bug-reports and/or questions to: [email protected] */
#include "spin.h"
#include "y.tab.h"
#include "pangen1.h"
#include "pangen3.h"
extern FILE *tc, *th, *tt;
extern Label *labtab;
extern Ordered *all_names;
extern ProcList *rdy;
extern Queue *qtab;
extern Symbol *Fname;
extern int lineno, verbose, Pid, separate;
extern int nrRdy, nqs, mst, Mpars, claimnr, eventmapnr;
extern short has_sorted, has_random, has_provided;
int Npars=0, u_sync=0, u_async=0, hastrack = 1;
short has_io = 0;
short has_state=0; /* code contains c_state */
static Symbol *LstSet=ZS;
static int acceptors=0, progressors=0, nBits=0;
static int Types[] = { UNSIGNED, BIT, BYTE, CHAN, MTYPE, SHORT, INT, STRUCT };
static int doglobal(char *, int);
static void dohidden(void);
static void do_init(FILE *, Symbol *);
static void end_labs(Symbol *, int);
static void put_ptype(char *, int, int, int);
static void tc_predef_np(void);
static void put_pinit(ProcList *);
void walk_struct(FILE *, int, char *, Symbol *, char *, char *, char *);
static void
reverse_names(ProcList *p)
{
if (!p) return;
reverse_names(p->nxt);
fprintf(th, " \"%s\",\n", p->n->name);
}
void
genheader(void)
{ ProcList *p; int i;
if (separate == 2)
{ putunames(th);
goto here;
}
fprintf(th, "#define SYNC %d\n", u_sync);
fprintf(th, "#define ASYNC %d\n\n", u_async);
putunames(th);
fprintf(tc, "short Air[] = { ");
for (p = rdy, i=0; p; p = p->nxt, i++)
fprintf(tc, "%s (short) Air%d", (p!=rdy)?",":"", i);
fprintf(tc, ", (short) Air%d", i); /* np_ */
fprintf(tc, " };\n");
fprintf(th, "char *procname[] = {\n");
reverse_names(rdy);
fprintf(th, " \":np_:\",\n");
fprintf(th, "};\n\n");
here:
for (p = rdy; p; p = p->nxt)
put_ptype(p->n->name, p->tn, mst, nrRdy+1);
/* +1 for np_ */
put_ptype("np_", nrRdy, mst, nrRdy+1);
ntimes(th, 0, 1, Head0);
if (separate != 2)
{ extern void c_add_stack(FILE *);
ntimes(th, 0, 1, Header);
c_add_stack(th);
ntimes(th, 0, 1, Header0);
}
ntimes(th, 0, 1, Head1);
LstSet = ZS;
(void) doglobal("", PUTV);
hastrack = c_add_sv(th);
fprintf(th, " uchar sv[VECTORSZ];\n");
fprintf(th, "} State");
#ifdef SOLARIS
fprintf(th,"\n#ifdef GCC\n");
fprintf(th, "\t__attribute__ ((aligned(8)))");
fprintf(th, "\n#endif\n\t");
#endif
fprintf(th, ";\n\n");
fprintf(th, "#define HAS_TRACK %d\n", hastrack);
if (separate != 2)
dohidden();
}
void
genaddproc(void)
{ ProcList *p;
int i = 0;
if (separate ==2) goto shortcut;
fprintf(tc, "int\naddproc(int n");
for (i = 0; i < Npars; i++)
fprintf(tc, ", int par%d", i);
ntimes(tc, 0, 1, Addp0);
ntimes(tc, 1, nrRdy+1, R5); /* +1 for np_ */
ntimes(tc, 0, 1, Addp1);
if (has_provided)
{ fprintf(tt, "\nint\nprovided(int II, unsigned char ot, ");
fprintf(tt, "int tt, Trans *t)\n");
fprintf(tt, "{\n\tswitch(ot) {\n");
}
shortcut:
tc_predef_np();
for (p = rdy; p; p = p->nxt)
{ Pid = p->tn;
put_pinit(p);
}
if (separate == 2) return;
Pid = 0;
if (has_provided)
{ fprintf(tt, "\tdefault: return 1; /* e.g., a claim */\n");
fprintf(tt, "\t}\n\treturn 0;\n}\n");
}
ntimes(tc, i, i+1, R6);
if (separate == 0)
ntimes(tc, 1, nrRdy+1, R5); /* +1 for np_ */
else
ntimes(tc, 1, nrRdy, R5);
ntimes(tc, 0, 1, R8a);
}
void
do_locinits(FILE *fd)
{ ProcList *p;
for (p = rdy; p; p = p->nxt)
c_add_locinit(fd, p->tn, p->n->name);
}
void
genother(void)
{ ProcList *p;
switch (separate) {
case 2:
if (claimnr >= 0)
ntimes(tc, claimnr, claimnr+1, R0); /* claim only */
break;
case 1:
ntimes(tc, 0, 1, Code0);
ntimes(tc, 0, claimnr, R0); /* all except claim */
ntimes(tc, claimnr+1, nrRdy, R0);
break;
case 0:
ntimes(tc, 0, 1, Code0);
ntimes(tc, 0, nrRdy+1, R0); /* +1 for np_ */
break;
}
for (p = rdy; p; p = p->nxt)
end_labs(p->n, p->tn);
switch (separate) {
case 2:
if (claimnr >= 0)
ntimes(tc, claimnr, claimnr+1, R0a); /* claim only */
return;
case 1:
ntimes(tc, 0, claimnr, R0a); /* all except claim */
ntimes(tc, claimnr+1, nrRdy, R0a);
fprintf(tc, " if (state_tables)\n");
fprintf(tc, " ini_claim(%d, 0);\n", claimnr);
break;
case 0:
ntimes(tc, 0, nrRdy, R0a); /* all */
break;
}
ntimes(tc, 0, 1, R0b);
if (separate == 1 && acceptors == 0)
acceptors = 1; /* assume at least 1 acceptstate */
ntimes(th, acceptors, acceptors+1, Code1);
ntimes(th, progressors, progressors+1, Code3);
ntimes(th, nrRdy+1, nrRdy+2, R2); /* +1 for np_ */
fprintf(tc, " iniglobals();\n");
ntimes(tc, 0, 1, Code2a);
ntimes(tc, 0, 1, Code2b); /* bfs option */
ntimes(tc, 0, 1, Code2c);
ntimes(tc, 0, nrRdy, R4);
fprintf(tc, "}\n\n");
fprintf(tc, "void\n");
fprintf(tc, "iniglobals(void)\n{\n");
if (doglobal("", INIV) > 0)
{ fprintf(tc, "#ifdef VAR_RANGES\n");
(void) doglobal("logval(\"", LOGV);
fprintf(tc, "#endif\n");
}
ntimes(tc, 1, nqs+1, R3);
fprintf(tc, "\tMaxbody = max(Maxbody, sizeof(State)-VECTORSZ);");
fprintf(tc, "\n}\n\n");
}
void
gensvmap(void)
{
ntimes(tc, 0, 1, SvMap);
}
static struct {
char *s, *t; int n, m, p;
} ln[] = {
{"end", "stopstate", 3, 0, 0},
{"progress", "progstate", 8, 0, 1},
{"accept", "accpstate", 6, 1, 0},
{0, 0, 0, 0, 0},
};
static void
end_labs(Symbol *s, int i)
{ int oln = lineno;
Symbol *ofn = Fname;
Label *l;
int j; char foo[128];
if ((i == claimnr && separate == 1)
|| (i != claimnr && separate == 2))
return;
for (l = labtab; l; l = l->nxt)
for (j = 0; ln[j].n; j++)
if (strncmp(l->s->name, ln[j].s, ln[j].n) == 0
&& strcmp(l->c->name, s->name) == 0)
{ fprintf(tc, "\t%s[%d][%d] = 1;\n",
ln[j].t, i, l->e->seqno);
acceptors += ln[j].m;
progressors += ln[j].p;
if (l->e->status & D_ATOM)
{ sprintf(foo, "%s label inside d_step",
ln[j].s);
goto complain;
}
if (j > 0 && (l->e->status & ATOM))
{ sprintf(foo, "%s label inside atomic",
ln[j].s);
complain: lineno = l->e->n->ln;
Fname = l->e->n->fn;
printf("spin: %3d:%s, warning, %s - is invisible\n",
lineno, Fname?Fname->name:"-", foo);
}
}
/* visible states -- through remote refs: */
for (l = labtab; l; l = l->nxt)
if (l->visible
&& strcmp(l->s->context->name, s->name) == 0)
fprintf(tc, "\tvisstate[%d][%d] = 1;\n",
i, l->e->seqno);
lineno = oln;
Fname = ofn;
}
void
ntimes(FILE *fd, int n, int m, char *c[])
{
int i, j;
for (j = 0; c[j]; j++)
for (i = n; i < m; i++)
{ fprintf(fd, c[j], i, i, i, i, i, i);
fprintf(fd, "\n");
}
}
void
prehint(Symbol *s)
{ Lextok *n;
printf("spin: warning, ");
if (!s) return;
n = (s->context != ZS)?s->context->ini:s->ini;
if (n)
printf("line %3d %s, ", n->ln, n->fn->name);
}
void
checktype(Symbol *sp, char *s)
{ char buf[128]; int i;
if (!s
|| (sp->type != BYTE
&& sp->type != SHORT
&& sp->type != INT))
return;
if (sp->hidden&16) /* formal parameter */
{ ProcList *p; Lextok *f, *t;
int posnr = 0;
for (p = rdy; p; p = p->nxt)
if (p->n->name
&& strcmp(s, p->n->name) == 0)
break;
if (p)
for (f = p->p; f; f = f->rgt) /* list of types */
for (t = f->lft; t; t = t->rgt, posnr++)
if (t->sym
&& strcmp(t->sym->name, sp->name) == 0)
{ checkrun(sp, posnr);
return;
}
} else if (!(sp->hidden&4))
{ if (!(verbose&32)) return;
sputtype(buf, sp->type);
i = (int) strlen(buf);
while (buf[--i] == ' ') buf[i] = '\0';
prehint(sp);
if (sp->context)
printf("proctype %s:", s);
else
printf("global");
printf(" '%s %s' could be declared 'bit %s'\n",
buf, sp->name, sp->name);
} else if (sp->type != BYTE && !(sp->hidden&8))
{ if (!(verbose&32)) return;
sputtype(buf, sp->type);
i = (int) strlen(buf);
while (buf[--i] == ' ') buf[i] = '\0';
prehint(sp);
if (sp->context)
printf("proctype %s:", s);
else
printf("global");
printf(" '%s %s' could be declared 'byte %s'\n",
buf, sp->name, sp->name);
}
}
int
dolocal(FILE *ofd, char *pre, int dowhat, int p, char *s)
{ int h, j, k=0; extern int nr_errs;
Ordered *walk;
Symbol *sp;
char buf[64], buf2[128], buf3[128];
if (dowhat == INIV)
{ /* initialize in order of declaration */
for (walk = all_names; walk; walk = walk->next)
{ sp = walk->entry;
if (sp->context
&& !sp->owner
&& strcmp(s, sp->context->name) == 0)
{ checktype(sp, s); /* fall through */
if (!(sp->hidden&16))
{ sprintf(buf, "((P%d *)pptr(h))->", p);
do_var(ofd, dowhat, buf, sp, "", " = ", ";\n");
}
k++;
} }
} else
{ for (j = 0; j < 8; j++)
for (h = 0; h <= 1; h++)
for (walk = all_names; walk; walk = walk->next)
{ sp = walk->entry;
if (sp->context
&& !sp->owner
&& sp->type == Types[j]
&& ((h == 0 && sp->nel == 1) || (h == 1 && sp->nel > 1))
&& strcmp(s, sp->context->name) == 0)
{ switch (dowhat) {
case LOGV:
if (sp->type == CHAN
&& verbose == 0)
break;
sprintf(buf, "%s%s:", pre, s);
{ sprintf(buf2, "\", ((P%d *)pptr(h))->", p);
sprintf(buf3, ");\n");
}
do_var(ofd, dowhat, "", sp, buf, buf2, buf3);
break;
case PUTV:
sprintf(buf, "((P%d *)pptr(h))->", p);
do_var(ofd, dowhat, buf, sp, "", " = ", ";\n");
k++;
break;
}
if (strcmp(s, ":never:") == 0)
{ printf("error: %s defines local %s\n",
s, sp->name);
nr_errs++;
} } } }
return k;
}
void
c_chandump(FILE *fd)
{ Queue *q;
char buf[256];
int i;
if (!qtab)
{ fprintf(fd, "void\nc_chandump(int unused) ");
fprintf(fd, "{ unused = unused++; /* avoid complaints */ }\n");
return;
}
fprintf(fd, "void\nc_chandump(int from)\n");
fprintf(fd, "{ uchar *z; int slot;\n");
fprintf(fd, " from--;\n");
fprintf(fd, " if (from >= (int) now._nr_qs || from < 0)\n");
fprintf(fd, " { printf(\"pan: bad qid %%d\\n\", from+1);\n");
fprintf(fd, " return;\n");
fprintf(fd, " }\n");
fprintf(fd, " z = qptr(from);\n");
fprintf(fd, " switch (((Q0 *)z)->_t) {\n");
for (q = qtab; q; q = q->nxt)
{ fprintf(fd, " case %d:\n\t\t", q->qid);
sprintf(buf, "((Q%d *)z)->", q->qid);
fprintf(fd, "for (slot = 0; slot < %sQlen; slot++)\n\t\t", buf);
fprintf(fd, "{ printf(\" [\");\n\t\t");
for (i = 0; i < q->nflds; i++)
{ if (q->fld_width[i] == MTYPE)
{ fprintf(fd, "\tprintm(%scontents[slot].fld%d);\n\t\t",
buf, i);
} else
fprintf(fd, "\tprintf(\"%%d,\", %scontents[slot].fld%d);\n\t\t",
buf, i);
}
fprintf(fd, " printf(\"],\");\n\t\t");
fprintf(fd, "}\n\t\t");
fprintf(fd, "break;\n");
}
fprintf(fd, " }\n");
fprintf(fd, " printf(\"\\n\");\n}\n");
}
void
c_var(FILE *fd, char *pref, Symbol *sp)
{ char buf[256];
int i;
switch (sp->type) {
case STRUCT:
/* c_struct(fd, pref, sp); */
fprintf(fd, "\t\tprintf(\"\t(struct %s)\\n\");\n",
sp->name);
sprintf(buf, "%s%s.", pref, sp->name);
c_struct(fd, buf, sp);
break;
case BIT: case BYTE:
case SHORT: case INT:
case UNSIGNED:
sputtype(buf, sp->type);
if (sp->nel == 1)
{ fprintf(fd, "\tprintf(\"\t%s %s:\t%%d\\n\", %s%s);\n",
buf, sp->name, pref, sp->name);
} else
{ fprintf(fd, "\t{\tint l_in;\n");
fprintf(fd, "\t\tfor (l_in = 0; l_in < %d; l_in++)\n", sp->nel);
fprintf(fd, "\t\t{\n");
fprintf(fd, "\t\t\tprintf(\"\t%s %s[%%d]:\t%%d\\n\", l_in, %s%s[l_in]);\n",
buf, sp->name, pref, sp->name);
fprintf(fd, "\t\t}\n");
fprintf(fd, "\t}\n");
}
break;
case CHAN:
if (sp->nel == 1)
{ fprintf(fd, "\tprintf(\"\tchan %s (=%%d):\tlen %%d:\\t\", ",
sp->name);
fprintf(fd, "%s%s, q_len(%s%s));\n",
pref, sp->name, pref, sp->name);
fprintf(fd, "\tc_chandump(%s%s);\n", pref, sp->name);
} else
for (i = 0; i < sp->nel; i++)
{ fprintf(fd, "\tprintf(\"\tchan %s[%d] (=%%d):\tlen %%d:\\t\", ",
sp->name, i);
fprintf(fd, "%s%s[%d], q_len(%s%s[%d]));\n",
pref, sp->name, i, pref, sp->name, i);
fprintf(fd, "\tc_chandump(%s%s[%d]);\n",
pref, sp->name, i);
}
break;
}
}
int
c_splurge_any(ProcList *p)
{ Ordered *walk;
Symbol *sp;
if (strcmp(p->n->name, ":never:") != 0
&& strcmp(p->n->name, ":trace:") != 0
&& strcmp(p->n->name, ":notrace:") != 0)
for (walk = all_names; walk; walk = walk->next)
{ sp = walk->entry;
if (!sp->context
|| sp->type == 0
|| strcmp(sp->context->name, p->n->name) != 0
|| sp->owner || (sp->hidden&1)
|| (sp->type == MTYPE && ismtype(sp->name)))
continue;
return 1;
}
return 0;
}
void
c_splurge(FILE *fd, ProcList *p)
{ Ordered *walk;
Symbol *sp;
char pref[64];
if (strcmp(p->n->name, ":never:") != 0
&& strcmp(p->n->name, ":trace:") != 0
&& strcmp(p->n->name, ":notrace:") != 0)
for (walk = all_names; walk; walk = walk->next)
{ sp = walk->entry;
if (!sp->context
|| sp->type == 0
|| strcmp(sp->context->name, p->n->name) != 0
|| sp->owner || (sp->hidden&1)
|| (sp->type == MTYPE && ismtype(sp->name)))
continue;
sprintf(pref, "((P%d *)pptr(pid))->", p->tn);
c_var(fd, pref, sp);
}
}
void
c_wrapper(FILE *fd) /* allow pan.c to print out global sv entries */
{ Ordered *walk;
ProcList *p;
Symbol *sp;
Lextok *n;
extern Lextok *Mtype;
int j;
fprintf(fd, "void\nc_globals(void)\n{\t/* int i; */\n");
fprintf(fd, " printf(\"global vars:\\n\");\n");
for (walk = all_names; walk; walk = walk->next)
{ sp = walk->entry;
if (sp->context || sp->owner || (sp->hidden&1)
|| (sp->type == MTYPE && ismtype(sp->name)))
continue;
c_var(fd, "now.", sp);
}
fprintf(fd, "}\n");
fprintf(fd, "void\nc_locals(int pid, int tp)\n{\t/* int i; */\n");
fprintf(fd, " switch(tp) {\n");
for (p = rdy; p; p = p->nxt)
{ fprintf(fd, " case %d:\n", p->tn);
fprintf(fd, " \tprintf(\"local vars proc %%d (%s):\\n\", pid);\n",
p->n->name);
if (c_splurge_any(p))
{ fprintf(fd, " \tprintf(\"local vars proc %%d (%s):\\n\", pid);\n",
p->n->name);
c_splurge(fd, p);
} else
{ fprintf(fd, " \t/* none */\n");
}
fprintf(fd, " \tbreak;\n");
}
fprintf(fd, " }\n}\n");
fprintf(fd, "void\nprintm(int x)\n{\n");
fprintf(fd, " switch (x) {\n");
for (n = Mtype, j = 1; n && j; n = n->rgt, j++)
fprintf(fd, "\tcase %d: Printf(\"%s\"); break;\n",
j, n->lft->sym->name);
fprintf(fd, " default: Printf(\"%%d\", x);\n");
fprintf(fd, " }\n");
fprintf(fd, "}\n");
}
static int
doglobal(char *pre, int dowhat)
{ Ordered *walk;
Symbol *sp;
int j, cnt = 0;
for (j = 0; j < 8; j++)
for (walk = all_names; walk; walk = walk->next)
{ sp = walk->entry;
if (!sp->context
&& !sp->owner
&& sp->type == Types[j])
{ if (Types[j] != MTYPE || !ismtype(sp->name))
switch (dowhat) {
case LOGV:
if (sp->type == CHAN
&& verbose == 0)
break;
if (sp->hidden&1)
break;
do_var(tc, dowhat, "", sp,
pre, "\", now.", ");\n");
break;
case INIV:
checktype(sp, (char *) 0);
cnt++; /* fall through */
case PUTV:
do_var(tc, dowhat, (sp->hidden&1)?"":"now.", sp,
"", " = ", ";\n");
break;
} } }
return cnt;
}
static void
dohidden(void)
{ Ordered *walk;
Symbol *sp;
int j;
for (j = 0; j < 8; j++)
for (walk = all_names; walk; walk = walk->next)
{ sp = walk->entry;
if ((sp->hidden&1)
&& sp->type == Types[j])
{ if (sp->context || sp->owner)
fatal("cannot hide non-globals (%s)", sp->name);
if (sp->type == CHAN)
fatal("cannot hide channels (%s)", sp->name);
fprintf(th, "/* hidden variable: */");
typ2c(sp);
} }
fprintf(th, "int _; /* a predefined write-only variable */\n\n");
}
void
do_var(FILE *ofd, int dowhat, char *s, Symbol *sp,
char *pre, char *sep, char *ter)
{ int i;
switch(dowhat) {
case PUTV:
if (sp->hidden&1) break;
typ2c(sp);
break;
case LOGV:
case INIV:
if (sp->type == STRUCT)
{ /* struct may contain a chan */
walk_struct(ofd, dowhat, s, sp, pre, sep, ter);
break;
}
if (!sp->ini && dowhat != LOGV) /* it defaults to 0 */
break;
if (sp->nel == 1)
{ fprintf(ofd, "\t\t%s%s%s%s",
pre, s, sp->name, sep);
if (dowhat == LOGV)
fprintf(ofd, "%s%s", s, sp->name);
else
do_init(ofd, sp);
fprintf(ofd, "%s", ter);
} else
{ if (sp->ini && sp->ini->ntyp == CHAN)
{ for (i = 0; i < sp->nel; i++)
{ fprintf(ofd, "\t\t%s%s%s[%d]%s",
pre, s, sp->name, i, sep);
if (dowhat == LOGV)
fprintf(ofd, "%s%s[%d]",
s, sp->name, i);
else
do_init(ofd, sp);
fprintf(ofd, "%s", ter);
}
} else
{ fprintf(ofd, "\t{\tint l_in;\n");
fprintf(ofd, "\t\tfor (l_in = 0; l_in < %d; l_in++)\n", sp->nel);
fprintf(ofd, "\t\t{\n");
fprintf(ofd, "\t\t\t%s%s%s[l_in]%s",
pre, s, sp->name, sep);
if (dowhat == LOGV)
fprintf(ofd, "%s%s[l_in]", s, sp->name);
else
putstmnt(ofd, sp->ini, 0);
fprintf(ofd, "%s", ter);
fprintf(ofd, "\t\t}\n");
fprintf(ofd, "\t}\n");
} }
break;
}
}
static void
do_init(FILE *ofd, Symbol *sp)
{ int i; extern Queue *ltab[];
if (sp->ini
&& sp->type == CHAN
&& ((i = qmake(sp)) > 0))
{ if (sp->ini->ntyp == CHAN)
fprintf(ofd, "addqueue(%d, %d)",
i, ltab[i-1]->nslots == 0);
else
fprintf(ofd, "%d", i);
} else
putstmnt(ofd, sp->ini, 0);
}
static int
blog(int n) /* for small log2 without rounding problems */
{ int m=1, r=2;
while (r < n) { m++; r *= 2; }
return 1+m;
}
static void
put_ptype(char *s, int i, int m0, int m1)
{ int k;
if (strcmp(s, ":init:") == 0)
fprintf(th, "#define Pinit ((P%d *)this)\n", i);
if (strcmp(s, ":never:") != 0
&& strcmp(s, ":trace:") != 0
&& strcmp(s, ":notrace:") != 0
&& strcmp(s, ":init:") != 0
&& strcmp(s, "_:never_template:_") != 0
&& strcmp(s, "np_") != 0)
fprintf(th, "#define P%s ((P%d *)this)\n", s, i);
fprintf(th, "typedef struct P%d { /* %s */\n", i, s);
fprintf(th, " unsigned _pid : 8; /* 0..255 */\n");
fprintf(th, " unsigned _t : %d; /* proctype */\n", blog(m1));
fprintf(th, " unsigned _p : %d; /* state */\n", blog(m0));
LstSet = ZS;
nBits = 8 + blog(m1) + blog(m0);
k = dolocal(tc, "", PUTV, i, s); /* includes pars */
c_add_loc(th, s);
fprintf(th, "} P%d;\n", i);
if ((!LstSet && k > 0) || has_state)
fprintf(th, "#define Air%d 0\n", i);
else
{ fprintf(th, "#define Air%d (sizeof(P%d) - ", i, i);
if (k == 0)
{ fprintf(th, "%d", (nBits+7)/8);
goto done;
}
if ((LstSet->type != BIT && LstSet->type != UNSIGNED)
|| LstSet->nel != 1)
{ fprintf(th, "Offsetof(P%d, %s) - %d*sizeof(",
i, LstSet->name, LstSet->nel);
}
switch(LstSet->type) {
case UNSIGNED:
fprintf(th, "%d", (nBits+7)/8);
break;
case BIT:
if (LstSet->nel == 1)
{ fprintf(th, "%d", (nBits+7)/8);
break;
} /* else fall through */
case MTYPE: case BYTE: case CHAN:
fprintf(th, "uchar)"); break;
case SHORT:
fprintf(th, "short)"); break;
case INT:
fprintf(th, "int)"); break;
default:
fatal("cannot happen Air %s",
LstSet->name);
}
done: fprintf(th, ")\n");
}
}
static void
tc_predef_np(void)
{ int i = nrRdy; /* 1+ highest proctype nr */
fprintf(th, "#define _NP_ %d\n", i);
/* if (separate == 2) fprintf(th, "extern "); */
fprintf(th, "uchar reached%d[3]; /* np_ */\n", i);
fprintf(th, "#define nstates%d 3 /* np_ */\n", i);
fprintf(th, "#define endstate%d 2 /* np_ */\n\n", i);
fprintf(th, "#define start%d 0 /* np_ */\n", i);
fprintf(tc, "\tcase %d: /* np_ */\n", i);
if (separate == 1)
{ fprintf(tc, "\t\tini_claim(%d, h);\n", i);
} else
{ fprintf(tc, "\t\t((P%d *)pptr(h))->_t = %d;\n", i, i);
fprintf(tc, "\t\t((P%d *)pptr(h))->_p = 0;\n", i);
fprintf(tc, "\t\treached%d[0] = 1;\n", i);
fprintf(tc, "\t\taccpstate[%d][1] = 1;\n", i);
}
fprintf(tc, "\t\tbreak;\n");
}
static void
put_pinit(ProcList *P)
{ Lextok *fp, *fpt, *t;
Element *e = P->s->frst;
Symbol *s = P->n;
Lextok *p = P->p;
int i = P->tn;
int ini, j, k;
if (i == claimnr
&& separate == 1)
{ fprintf(tc, "\tcase %d: /* %s */\n", i, s->name);
fprintf(tc, "\t\tini_claim(%d, h);\n", i);
fprintf(tc, "\t\tbreak;\n");
return;
}
if (i != claimnr
&& separate == 2)
return;
ini = huntele(e, e->status, -1)->seqno;
fprintf(th, "#define start%d %d\n", i, ini);
if (i == claimnr)
fprintf(th, "#define start_claim %d\n", ini);
if (i == eventmapnr)
fprintf(th, "#define start_event %d\n", ini);
fprintf(tc, "\tcase %d: /* %s */\n", i, s->name);
fprintf(tc, "\t\t((P%d *)pptr(h))->_t = %d;\n", i, i);
fprintf(tc, "\t\t((P%d *)pptr(h))->_p = %d;", i, ini);
fprintf(tc, " reached%d[%d]=1;\n", i, ini);
if (has_provided)
{ fprintf(tt, "\tcase %d: /* %s */\n\t\t", i, s->name);
if (P->prov)
{ fprintf(tt, "if (");
putstmnt(tt, P->prov, 0);
fprintf(tt, ")\n\t\t\t");
}
fprintf(tt, "return 1;\n");
if (P->prov)
fprintf(tt, "\t\tbreak;\n");
}
fprintf(tc, "\t\t/* params: */\n");
for (fp = p, j=0; fp; fp = fp->rgt)
for (fpt = fp->lft; fpt; fpt = fpt->rgt, j++)
{ t = (fpt->ntyp == ',') ? fpt->lft : fpt;
if (t->sym->nel != 1)
{ lineno = t->ln;
Fname = t->fn;
fatal("array in parameter list, %s",
t->sym->name);
}
fprintf(tc, "\t\t((P%d *)pptr(h))->", i);
if (t->sym->type == STRUCT)
{ if (full_name(tc, t, t->sym, 1))
{ lineno = t->ln;
Fname = t->fn;
fatal("hidden array in parameter %s",
t->sym->name);
}
} else
fprintf(tc, "%s", t->sym->name);
fprintf(tc, " = par%d;\n", j);
}
fprintf(tc, "\t\t/* locals: */\n");
k = dolocal(tc, "", INIV, i, s->name);
if (k > 0)
{ fprintf(tc, "#ifdef VAR_RANGES\n");
(void) dolocal(tc, "logval(\"", LOGV, i, s->name);
fprintf(tc, "#endif\n");
}
fprintf(tc, "#ifdef HAS_CODE\n");
fprintf(tc, "\t\tlocinit%d(h);\n", i);
fprintf(tc, "#endif\n");
dumpclaims(tc, i, s->name);
fprintf(tc, "\t break;\n");
}
Element *
huntstart(Element *f)
{ Element *e = f;
Element *elast = (Element *) 0;
int cnt = 0;
while (elast != e && cnt++ < 200) /* new 4.0.8 */
{ elast = e;
if (e->n)
{ if (e->n->ntyp == '.' && e->nxt)
e = e->nxt;
else if (e->n->ntyp == UNLESS)
e = e->sub->this->frst;
} }
if (cnt >= 200 || !e)
fatal("confusing control structure", (char *) 0);
return e;
}
Element *
huntele(Element *f, int o, int stopat)
{ Element *g, *e = f;
int cnt=0; /* a precaution against loops */
if (e)
for (cnt = 0; cnt < 200 && e->n; cnt++)
{
if (e->seqno == stopat)
break;
switch (e->n->ntyp) {
case GOTO:
g = get_lab(e->n,1);
cross_dsteps(e->n, g->n);
break;
case '.':
case BREAK:
if (!e->nxt)
return e;
g = e->nxt;
break;
case UNLESS:
g = huntele(e->sub->this->frst, o, stopat);
break;
case D_STEP:
case ATOMIC:
case NON_ATOMIC:
default:
return e;
}
if ((o & ATOM) && !(g->status & ATOM))
return e;
e = g;
}
if (cnt >= 200 || !e)
fatal("confusing control structure", (char *) 0);
return e;
}
void
typ2c(Symbol *sp)
{ int wsbits = sizeof(long)*8; /* wordsize in bits */
switch (sp->type) {
case UNSIGNED:
if (sp->hidden&1)
fprintf(th, "\tuchar %s;", sp->name);
else
fprintf(th, "\tunsigned %s : %d",
sp->name, sp->nbits);
LstSet = sp;
if (nBits%wsbits > 0
&& wsbits - nBits%wsbits < sp->nbits)
{ /* must padd to a word-boundary */
nBits += wsbits - nBits%wsbits;
}
nBits += sp->nbits;
break;
case BIT:
if (sp->nel == 1 && !(sp->hidden&1))
{ fprintf(th, "\tunsigned %s : 1", sp->name);
LstSet = sp;
nBits++;
break;
} /* else fall through */
if (!(sp->hidden&1) && (verbose&32))
printf("spin: warning: bit-array %s[%d] mapped to byte-array\n",
sp->name, sp->nel);
nBits += 8*sp->nel; /* mapped onto array of uchars */
case MTYPE:
case BYTE:
case CHAN: /* good for up to 255 channels */
fprintf(th, "\tuchar %s", sp->name);
LstSet = sp;
break;
case SHORT:
fprintf(th, "\tshort %s", sp->name);
LstSet = sp;
break;
case INT:
fprintf(th, "\tint %s", sp->name);
LstSet = sp;
break;
case STRUCT:
if (!sp->Snm)
fatal("undeclared structure element %s", sp->name);
fprintf(th, "\tstruct %s %s",
sp->Snm->name,
sp->name);
LstSet = ZS;
break;
case CODE_FRAG:
case PREDEF:
return;
default:
fatal("variable %s undeclared", sp->name);
}
if (sp->nel != 1)
fprintf(th, "[%d]", sp->nel);
fprintf(th, ";\n");
}
static void
ncases(FILE *fd, int p, int n, int m, char *c[])
{ int i, j;
for (j = 0; c[j]; j++)
for (i = n; i < m; i++)
{ fprintf(fd, c[j], i, p, i);
fprintf(fd, "\n");
}
}
void
qlen_type(int qmax)
{
fprintf(th, "\t");
if (qmax < 256)
fprintf(th, "uchar");
else if (qmax < 65535)
fprintf(th, "ushort");
else
fprintf(th, "uint");
fprintf(th, " Qlen; /* q_size */\n");
}
void
genaddqueue(void)
{ char buf0[256];
int j, qmax = 0;
Queue *q;
ntimes(tc, 0, 1, Addq0);
if (has_io && !nqs)
fprintf(th, "#define NQS 1 /* nqs=%d, but has_io */\n", nqs);
else
fprintf(th, "#define NQS %d\n", nqs);
fprintf(th, "short q_flds[%d];\n", nqs+1);
fprintf(th, "short q_max[%d];\n", nqs+1);
for (q = qtab; q; q = q->nxt)
if (q->nslots > qmax)
qmax = q->nslots;
for (q = qtab; q; q = q->nxt)
{ j = q->qid;
fprintf(tc, "\tcase %d: j = sizeof(Q%d);", j, j);
fprintf(tc, " q_flds[%d] = %d;", j, q->nflds);
fprintf(tc, " q_max[%d] = %d;", j, max(1,q->nslots));
fprintf(tc, " break;\n");
fprintf(th, "typedef struct Q%d {\n", j);
qlen_type(qmax); /* 4.2.2 */
fprintf(th, " uchar _t; /* q_type */\n");
fprintf(th, " struct {\n");
for (j = 0; j < q->nflds; j++)
{ switch (q->fld_width[j]) {
case BIT:
if (q->nflds != 1)
{ fprintf(th, "\t\tunsigned");
fprintf(th, " fld%d : 1;\n", j);
break;
} /* else fall through: smaller struct */
case MTYPE:
case CHAN:
case BYTE:
fprintf(th, "\t\tuchar fld%d;\n", j);
break;
case SHORT:
fprintf(th, "\t\tshort fld%d;\n", j);
break;
case INT:
fprintf(th, "\t\tint fld%d;\n", j);
break;
default:
fatal("bad channel spec", "");
}
}
fprintf(th, " } contents[%d];\n", max(1, q->nslots));
fprintf(th, "} Q%d;\n", q->qid);
}
fprintf(th, "typedef struct Q0 {\t/* generic q */\n");
qlen_type(qmax); /* 4.2.2 */
fprintf(th, " uchar _t;\n");
fprintf(th, "} Q0;\n");
ntimes(tc, 0, 1, Addq1);
if (has_random)
{ fprintf(th, "int Q_has(int");
for (j = 0; j < Mpars; j++)
fprintf(th, ", int, int");
fprintf(th, ");\n");
fprintf(tc, "int\nQ_has(int into");
for (j = 0; j < Mpars; j++)
fprintf(tc, ", int want%d, int fld%d", j, j);
fprintf(tc, ")\n");
fprintf(tc, "{ int i;\n\n");
fprintf(tc, " if (!into--)\n");
fprintf(tc, " uerror(\"ref to unknown chan ");
fprintf(tc, "(recv-poll)\");\n\n");
fprintf(tc, " if (into >= now._nr_qs || into < 0)\n");
fprintf(tc, " Uerror(\"qrecv bad queue#\");\n\n");
fprintf(tc, " for (i = 0; i < ((Q0 *)qptr(into))->Qlen;");
fprintf(tc, " i++)\n");
fprintf(tc, " {\n");
for (j = 0; j < Mpars; j++)
{ fprintf(tc, " if (want%d && ", j);
fprintf(tc, "qrecv(into+1, i, %d, 0) != fld%d)\n",
j, j);
fprintf(tc, " continue;\n");
}
fprintf(tc, " return i+1;\n");
fprintf(tc, " }\n");
fprintf(tc, " return 0;\n");
fprintf(tc, "}\n");
}
fprintf(tc, "#if NQS>0\n");
fprintf(tc, "void\nqsend(int into, int sorted");
for (j = 0; j < Mpars; j++)
fprintf(tc, ", int fld%d", j);
fprintf(tc, ")\n");
ntimes(tc, 0, 1, Addq11);
for (q = qtab; q; q = q->nxt)
{ sprintf(buf0, "((Q%d *)z)->", q->qid);
fprintf(tc, "\tcase %d:%s\n", q->qid,
(q->nslots)?"":" /* =rv= */");
if (q->nslots == 0) /* reset handshake point */
fprintf(tc, "\t\t(trpt+2)->o_m = 0;\n");
if (has_sorted)
{ fprintf(tc, "\t\tif (!sorted) goto append%d;\n", q->qid);
fprintf(tc, "\t\tfor (j = 0; j < %sQlen; j++)\n", buf0);
fprintf(tc, "\t\t{\t/* find insertion point */\n");
sprintf(buf0, "((Q%d *)z)->contents[j].fld", q->qid);
for (j = 0; j < q->nflds; j++)
{ fprintf(tc, "\t\t\tif (fld%d > %s%d) continue;\n",
j, buf0, j);
fprintf(tc, "\t\t\tif (fld%d < %s%d) ", j, buf0, j);
fprintf(tc, "goto found%d;\n\n", q->qid);
}
fprintf(tc, "\t\t}\n");
fprintf(tc, "\tfound%d:\n", q->qid);
sprintf(buf0, "((Q%d *)z)->", q->qid);
fprintf(tc, "\t\tfor (k = %sQlen - 1; k >= j; k--)\n", buf0);
fprintf(tc, "\t\t{\t/* shift up */\n");
for (j = 0; j < q->nflds; j++)
{ fprintf(tc, "\t\t\t%scontents[k+1].fld%d = ",
buf0, j);
fprintf(tc, "%scontents[k].fld%d;\n",
buf0, j);
}
fprintf(tc, "\t\t}\n");
fprintf(tc, "\tappend%d:\t/* insert in slot j */\n", q->qid);
}
fprintf(tc, "#ifdef HAS_SORTED\n");
fprintf(tc, "\t\t(trpt+1)->ipt = j;\n"); /* ipt was bup.oval */
fprintf(tc, "#endif\n");
fprintf(tc, "\t\t%sQlen = %sQlen + 1;\n", buf0, buf0);
sprintf(buf0, "((Q%d *)z)->contents[j].fld", q->qid);
for (j = 0; j < q->nflds; j++)
fprintf(tc, "\t\t%s%d = fld%d;\n", buf0, j, j);
fprintf(tc, "\t\tbreak;\n");
}
ntimes(tc, 0, 1, Addq2);
for (q = qtab; q; q = q->nxt)
fprintf(tc, "\tcase %d: return %d;\n", q->qid, (!q->nslots));
ntimes(tc, 0, 1, Addq3);
for (q = qtab; q; q = q->nxt)
fprintf(tc, "\tcase %d: return (q_sz(from) == %d);\n",
q->qid, max(1, q->nslots));
ntimes(tc, 0, 1, Addq4);
for (q = qtab; q; q = q->nxt)
{ sprintf(buf0, "((Q%d *)z)->", q->qid);
fprintf(tc, " case %d:%s\n\t\t",
q->qid, (q->nslots)?"":" /* =rv= */");
if (q->nflds == 1)
{ fprintf(tc, "if (fld == 0) r = %s", buf0);
fprintf(tc, "contents[slot].fld0;\n");
} else
{ fprintf(tc, "switch (fld) {\n");
ncases(tc, q->qid, 0, q->nflds, R12);
fprintf(tc, "\t\tdefault: Uerror");
fprintf(tc, "(\"too many fields in recv\");\n");
fprintf(tc, "\t\t}\n");
}
fprintf(tc, "\t\tif (done)\n");
if (q->nslots == 0)
{ fprintf(tc, "\t\t{ j = %sQlen - 1;\n", buf0);
fprintf(tc, "\t\t %sQlen = 0;\n", buf0);
sprintf(buf0, "\t\t\t((Q%d *)z)->contents", q->qid);
} else
{ fprintf(tc, "\t\t{ j = %sQlen;\n", buf0);
fprintf(tc, "\t\t %sQlen = --j;\n", buf0);
fprintf(tc, "\t\t for (k=slot; k<j; k++)\n");
fprintf(tc, "\t\t {\n");
sprintf(buf0, "\t\t\t((Q%d *)z)->contents", q->qid);
for (j = 0; j < q->nflds; j++)
{ fprintf(tc, "\t%s[k].fld%d = \n", buf0, j);
fprintf(tc, "\t\t%s[k+1].fld%d;\n", buf0, j);
}
fprintf(tc, "\t\t }\n");
}
for (j = 0; j < q->nflds; j++)
fprintf(tc, "%s[j].fld%d = 0;\n", buf0, j);
fprintf(tc, "\t\t\tif (fld+1 != %d)\n\t\t\t", q->nflds);
fprintf(tc, "\tuerror(\"missing pars in receive\");\n");
/* incompletely received msgs cannot be unrecv'ed */
fprintf(tc, "\t\t}\n");
fprintf(tc, "\t\tbreak;\n");
}
ntimes(tc, 0, 1, Addq5);
for (q = qtab; q; q = q->nxt)
fprintf(tc, " case %d: j = sizeof(Q%d); break;\n",
q->qid, q->qid);
ntimes(tc, 0, 1, R8b);
ntimes(th, 0, 1, Proto); /* tag on function prototypes */
fprintf(th, "void qsend(int, int");
for (j = 0; j < Mpars; j++)
fprintf(th, ", int");
fprintf(th, ");\n");
fprintf(th, "#define Addproc(x) addproc(x");
for (j = 0; j < Npars; j++)
fprintf(th, ", 0");
fprintf(th, ")\n");
}