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read.c
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/*
* Symbolic encoding program for compiling a symbolic
* description into a binary representation. Target
* is multi-level logic synthesis
*
* History:
* 3/20/90: recognize ANY or * on input
*
* Bill Lin
* University of California, Berkeley
* Comments to [email protected]
*
* Copyright (c) 1989 Bill Lin, UC Berkeley CAD Group
* Permission is granted to do anything with this
* code except sell it or remove this message.
*/
#include "jedi.h"
int read_input(); /* forward declaration */
int read_kiss(); /* forward declaration */
char *mk_var_name(); /* forward declaration */
/*
* global variable
*/
int dummy_count = 0;
read_input(fin, fout)
FILE *fin;
FILE *fout;
{
Boolean iflag = FALSE;
Boolean oflag = FALSE;
Boolean ilbflag = FALSE;
Boolean obflag = FALSE;
Boolean itypeflag = FALSE;
Boolean otypeflag = FALSE;
Boolean found;
char tline[BUFSIZE];
char line[BUFSIZE];
int i, j;
int k, l;
int c;
int ns, nc, nb;
ne = np = 0;
enumtypes = ALLOC(struct Enumtype, 1);
while (fgets(line, BUFSIZE, fin) != NULL) {
(void) strcpy(tline, line);
parse_line(tline);
if (targc == 0) {
/* skip empty lines */
} else if (targv[0][0] == 0) {
/* skip empty lines */
} else if (targv[0][0] == '#' ) {
/* pass on comments */
(void) fprintf(fout, "%s", line);
} else if (!strcmp(targv[0], ".i")) {
if (iflag) {
(void) fprintf(stderr,
"warning: .i has been declared more than once\n");
continue;
}
iflag = TRUE;
ni = atoi(targv[1]);
inputs = ALLOC(struct Variable, ni);
for (i=0; i<ni; i++) {
inputs[i].name = mk_var_name(); /* default */
inputs[i].boolean_flag = FALSE; /* undefined */
inputs[i].enumtype_ptr = 0; /* undefined */
inputs[i].entries = ALLOC(struct Entry, 1); /* undefined */
}
} else if (!strcmp(targv[0], ".o")) {
if (oflag) {
(void) fprintf(stderr,
"warning: .o has been declared more than once\n");
continue;
}
oflag = TRUE;
no = atoi(targv[1]);
outputs = ALLOC(struct Variable, no);
for (i=0; i<no; i++) {
outputs[i].name = mk_var_name(); /* default */
outputs[i].boolean_flag = FALSE; /* undefined */
outputs[i].enumtype_ptr = 0; /* undefined */
outputs[i].entries = ALLOC(struct Entry, 1); /* undefined */
}
} else if (!strcmp(targv[0], ".ilb")) {
if (!iflag) {
(void) fprintf(stderr,
"fatal error: .i has not been defined\n");
exit(1);
}
if (ilbflag) {
(void) fprintf(stderr,
"warning: .ilb has been declared more than once\n");
continue;
}
ilbflag = TRUE;
for (i=0; i<ni; i++) {
FREE(inputs[i].name); /* free previous ptr */
inputs[i].name = util_strsav(targv[i+1]); /* assign new name */
}
} else if (!strcmp(targv[0], ".ob")) {
if (!oflag) {
(void) fprintf(stderr,
"fatal error: .o has not been defined\n");
exit(1);
}
if (obflag) {
(void) fprintf(stderr,
"warning: .ob has been declared more than once\n");
continue;
}
obflag = TRUE;
for (i=0; i<no; i++) {
FREE(outputs[i].name); /* free previous ptr */
outputs[i].name = util_strsav(targv[i+1]); /* assign new name */
}
} else if (!strcmp(targv[0], ".itype")) {
if (!iflag) {
(void) fprintf(stderr,
"fatal error: .i has not been defined\n");
exit(1);
}
if (itypeflag) {
(void) fprintf(stderr,
"warning: .itype has been declared more than once\n");
continue;
}
itypeflag = TRUE;
for (i=0; i<ni; i++) {
if (!strcmp(targv[i+1], "Boolean")) {
inputs[i].boolean_flag = TRUE;
} else {
found = FALSE;
for (j=0; j<ne; j++) {
if (!strcmp(targv[i+1], enumtypes[j].name)) {
inputs[i].enumtype_ptr = j;
found = TRUE;
break;
}
}
/*
* print an error if no such type defined yet
*/
if (!found) {
(void) fprintf(stderr,
"fatal error: enum type (%s) has not been defined\n",
targv[i+1]);
exit(1);
}
}
}
} else if (!strcmp(targv[0], ".otype")) {
if (!oflag) {
(void) fprintf(stderr,
"fatal error: .o has not been defined\n");
exit(1);
}
if (otypeflag) {
(void) fprintf(stderr,
"warning: .otype has been declared more than once\n");
continue;
}
otypeflag = TRUE;
for (i=0; i<no; i++) {
if (!strcmp(targv[i+1], "Boolean")) {
outputs[i].boolean_flag = TRUE;
} else {
found = FALSE;
for (j=0; j<ne; j++) {
if (!strcmp(targv[i+1], enumtypes[j].name)) {
outputs[i].enumtype_ptr = j;
found = TRUE;
break;
}
}
/*
* print an error if no such type defined yet
*/
if (!found) {
(void) fprintf(stderr,
"fatal error: enum type (%s) has not been defined\n",
targv[i+1]);
exit(1);
}
}
}
} else if (!strcmp(targv[0], ".enum")) {
ne++;
k = ne-1;
enumtypes = REALLOC(struct Enumtype, enumtypes, ne);
enumtypes[k].name = util_strsav(targv[1]);
ns = enumtypes[k].ns = atoi(targv[2]);
nb = enumtypes[k].nb = atoi(targv[3]);
if (nb > MAXSPACE) {
(void) fprintf(stderr,
"panic: type (%s) code length %d exceeds limit of %d.\n",
targv[1], nb, MAXSPACE);
}
nc = enumtypes[k].nc = pow_of_2(nb);
enumtypes[k].input_flag = FALSE;
enumtypes[k].output_flag = FALSE;
enumtypes[k].dont_care = ALLOC(char, nb + 1);
for (i=0; i<nb; i++) {
enumtypes[k].dont_care[i] = '-';
}
enumtypes[k].dont_care[nb] = '\0';
enumtypes[k].codes = ALLOC(struct Code, nc);
for (i=0; i<nc; i++) {
enumtypes[k].codes[i].assigned = FALSE; /* undefined */
enumtypes[k].codes[i].bit_vector =
int_to_binary(i, nb);
enumtypes[k].codes[i].symbol_ptr = 0; /* undefined */
}
enumtypes[k].symbols = ALLOC(struct Symbol, ns);
for (i=0; i<ns; i++) {
enumtypes[k].symbols[i].token = util_strsav(targv[i+4]);
enumtypes[k].symbols[i].code_ptr = i;
/*
* assign codes
*/
enumtypes[k].codes[i].assigned = TRUE;
enumtypes[k].codes[i].symbol_ptr = i;
}
/*
* initialize connectivity matrix to be
* computed when the weights are computed
*/
enumtypes[k].links = ALLOC(struct Link *, ns);
for (i=0; i<ns; i++) {
enumtypes[k].links[i] =
ALLOC(struct Link, ns);
for (j=0; j<ns; j++) {
enumtypes[k].links[i][j].weight = 0; /* undefined */
}
}
/*
* compute code distances
*/
enumtypes[k].distances = ALLOC(int *, nc);
for (i=0; i<nc; i++) {
enumtypes[k].distances[i] = ALLOC(int, nc);
}
for (i=0; i<nc; i++) {
for (j=0; j<nc; j++) {
enumtypes[k].distances[i][j] =
distance(enumtypes[k].codes[i].bit_vector,
enumtypes[k].codes[j].bit_vector, nb);
}
}
} else if (!strcmp(targv[0], ".e")) {
/* ignore end command */
} else if (targv[0][0] == '.') {
/*
* pass on unrecognized commands
*/
(void) fprintf(fout, "%s", line);
} else if (targc == (ni + no)) {
if (!iflag || !oflag || !itypeflag || !otypeflag) {
(void) fprintf(stderr,
"fatal error: either .i or .o has not been defined\n");
exit(1);
}
np++;
k = np-1;
/*
* parse input plane
*/
for (i=0; i<ni; i++) {
inputs[i].entries =
REALLOC(struct Entry, inputs[i].entries, np);
inputs[i].entries[k].token = util_strsav(targv[i]);
/*
* if not boolean type
*/
if (!inputs[i].boolean_flag) {
l = inputs[i].entries[k].enumtype_ptr =
inputs[i].enumtype_ptr;
for (j=0; j<enumtypes[l].ns; j++) {
if (!strcmp(inputs[i].entries[k].token,
enumtypes[l].symbols[j].token)) {
inputs[i].entries[k].symbol_ptr = j;
break;
}
}
}
}
/*
* parse output plane
*/
for (i=0; i<no; i++) {
outputs[i].entries =
REALLOC(struct Entry, outputs[i].entries, np);
outputs[i].entries[k].token = util_strsav(targv[i+ni]);
/*
* if not boolean type
*/
if (!outputs[i].boolean_flag) {
l = outputs[i].entries[k].enumtype_ptr =
outputs[i].enumtype_ptr;
for (j=0; j<enumtypes[l].ns; j++) {
if (!strcmp(outputs[i].entries[k].token,
enumtypes[l].symbols[j].token)) {
outputs[i].entries[k].symbol_ptr = j;
break;
}
}
}
}
} else {
(void) fprintf(stderr, "warning: ignored questionable input ...\n");
(void) fprintf(stderr, "----> %s", line);
}
}
/*
* check to make sure a truth table was read in
*/
if (!iflag || !oflag || !itypeflag || !otypeflag) {
(void) fprintf(stderr, "jedi: unable to find input truth table\n");
exit(1);
}
/*
* determine total inputs and total outputs
*/
tni = 0;
for (i=0; i<ni; i++) {
if (inputs[i].boolean_flag) {
tni++;
} else {
c = inputs[i].enumtype_ptr;
tni += enumtypes[c].nb;
}
}
tno = 0;
for (i=0; i<no; i++) {
if (outputs[i].boolean_flag) {
tno++;
} else {
c = outputs[i].enumtype_ptr;
tno += enumtypes[c].nb;
}
}
} /* end of read_input */
read_kiss(fin, fout)
FILE *fin;
FILE *fout;
{
Boolean iflag = FALSE;
Boolean oflag = FALSE;
Boolean sflag = FALSE;
Boolean ilbflag = FALSE;
Boolean obflag = FALSE;
Boolean found;
char tline[BUFSIZE];
char line[BUFSIZE];
int i, j;
int k, l, m;
int nc, nb;
int t;
np = 0;
reset_state = NIL(char);
while (fgets(line, BUFSIZE, fin) != NULL) {
(void) strcpy(tline, line);
parse_line(tline);
if (targc == 0) {
/* skip */
} else if (targv[0][0] == 0) {
/* skip */
} else if (targv[0][0] == '#') {
/*
* pass on comments
*/
(void) fprintf(fout, "%s", line);
} else if (!strcmp(targv[0], ".i")) {
if (iflag) {
(void) fprintf(stderr,
"warning: .i has been declared more than once\n");
continue;
}
iflag = TRUE;
ni = atoi(targv[1]) + 1;
inputs = ALLOC(struct Variable, ni);
for (i=0; i<ni; i++) {
inputs[i].name = mk_var_name(); /* default */
inputs[i].boolean_flag = TRUE;
inputs[i].enumtype_ptr = 0;
inputs[i].entries = ALLOC(struct Entry, 1); /* undefined */
}
inputs[ni-1].boolean_flag = FALSE; /* presentState input */
} else if (!strcmp(targv[0], ".o")) {
if (oflag) {
(void) fprintf(stderr,
"warning: .o has been declared more than once\n");
continue;
}
oflag = TRUE;
no = atoi(targv[1]) + 1;
outputs = ALLOC(struct Variable, no);
for (i=0; i<no; i++) {
outputs[i].name = mk_var_name(); /* default */
outputs[i].boolean_flag = TRUE;
outputs[i].enumtype_ptr = 0;
outputs[i].entries = ALLOC(struct Entry, 1); /* undefined */
}
outputs[0].boolean_flag = FALSE; /* nextState output */
} else if (!strcmp(targv[0], ".ilb")) {
if (!iflag) {
(void) fprintf(stderr,
"fatal error: .i has not been defined\n");
exit(1);
}
if (ilbflag) {
(void) fprintf(stderr,
"warning: .ilb has been declared more than once\n");
continue;
}
ilbflag = TRUE;
for (i=0; i<ni; i++) {
FREE(inputs[i].name); /* free previous ptr */
inputs[i].name = util_strsav(targv[i+1]); /* assign new name */
}
} else if (!strcmp(targv[0], ".ob")) {
if (!oflag) {
(void) fprintf(stderr,
"fatal error: .o has not been defined\n");
exit(1);
}
if (obflag) {
(void) fprintf(stderr,
"warning: .ob has been declared more than once\n");
continue;
}
obflag = TRUE;
for (i=0; i<no; i++) {
FREE(outputs[i].name); /* free previous ptr */
outputs[i].name = util_strsav(targv[i+1]); /* assign new name */
}
} else if (!strcmp(targv[0], ".s")) {
if (sflag) {
(void) fprintf(stderr,
"warning: .s has been declared more than once\n");
continue;
}
sflag = TRUE;
ne = 1;
enumtypes = ALLOC(struct Enumtype, 1);
enumtypes[0].name = "States";
enumtypes[0].ns = 0; /* undefined */
t = atoi(targv[1]);
if (t <= 1) {
t = 1;
} else {
t = (int) ceil(log((double) t)/ log(2.0));
}
if (bitsFlag) {
if (code_length < t) {
(void) fprintf(stderr,
"warning: code length %d is not long enough: ",
code_length);
(void) fprintf(stderr, "using default length %d.\n", t);
nb = enumtypes[0].nb = t;
} else {
nb = enumtypes[0].nb = code_length;
}
} else {
nb = enumtypes[0].nb = t;
}
if (nb > MAXSPACE) {
(void) fprintf(stderr,
"panic: type (%s) code length %d exceeds limit of %d.\n",
"States", nb, MAXSPACE);
}
nc = enumtypes[0].nc = pow_of_2(nb);
enumtypes[0].input_flag = FALSE;
enumtypes[0].output_flag = FALSE;
enumtypes[0].dont_care = ALLOC(char, nb + 1);
for (i=0; i<nb; i++) {
enumtypes[0].dont_care[i] = '-';
}
enumtypes[0].dont_care[nb] = '\0';
enumtypes[0].codes = ALLOC(struct Code, nc);
for (i=0; i<nc; i++) {
enumtypes[0].codes[i].assigned = FALSE; /* undefined */
enumtypes[0].codes[i].bit_vector =
int_to_binary(i, nb);
enumtypes[0].codes[i].symbol_ptr = 0; /* undefined */
}
enumtypes[0].symbols = ALLOC(struct Symbol, 1); /* undefined */
enumtypes[0].links = ALLOC(struct Link *, 1); /* undefined */
/*
* compute code distances
*/
enumtypes[0].distances = ALLOC(int *, nc);
for (i=0; i<nc; i++) {
enumtypes[0].distances[i] = ALLOC(int, nc);
}
for (i=0; i<nc; i++) {
for (j=0; j<nc; j++) {
enumtypes[0].distances[i][j] =
distance(enumtypes[0].codes[i].bit_vector,
enumtypes[0].codes[j].bit_vector, nb);
}
}
} else if (!strcmp(targv[0], ".r")) {
reset_state = util_strsav(targv[1]);
} else if (!strcmp(targv[0], ".e")) {
/* ignore end command */
} else if (targv[0][0] == '.') {
/* skip */
} else if (targc == 4) {
if (!iflag || !oflag || !sflag) {
(void) fprintf(stderr,
"fatal error: either .i, .o, or .s has not been defined\n");
exit(1);
}
np++;
k = np-1;
l = ni-1;
/*
* parse primary inputs
*/
for (i=0; i<l; i++) {
inputs[i].entries =
REALLOC(struct Entry, inputs[i].entries, np);
inputs[i].entries[k].token = ALLOC(char, 2);
inputs[i].entries[k].token[0] = targv[0][i];
inputs[i].entries[k].token[1] = '\0';
inputs[i].entries[k].enumtype_ptr = 0;
}
/*
* parse presentState
*/
inputs[l].entries =
REALLOC(struct Entry, inputs[l].entries, np);
inputs[l].entries[k].token = util_strsav(targv[1]);
inputs[l].entries[k].enumtype_ptr = 0;
if (!check_dont_care(inputs[l].entries[k].token)) {
found = FALSE;
for (j=0; j<enumtypes[0].ns; j++) {
if (!strcmp(inputs[l].entries[k].token,
enumtypes[0].symbols[j].token)) {
inputs[l].entries[k].symbol_ptr = j;
found = TRUE;
break;
}
}
if (!found) {
enumtypes[0].ns++;
enumtypes[0].symbols = REALLOC(struct Symbol,
enumtypes[0].symbols, enumtypes[0].ns);
m = enumtypes[0].ns-1;
inputs[l].entries[k].symbol_ptr = m;
enumtypes[0].symbols[m].token =
util_strsav(inputs[l].entries[k].token);
enumtypes[0].symbols[m].code_ptr = m;
/*
* assign codes
*/
enumtypes[0].codes[m].assigned = TRUE;
enumtypes[0].codes[m].symbol_ptr = m;
}
}
/*
* parse primary outputs
*/
for (i=0; i<no-1; i++) {
outputs[i+1].entries =
REALLOC(struct Entry, outputs[i+1].entries, np);
outputs[i+1].entries[k].token = ALLOC(char, 2);
outputs[i+1].entries[k].token[0] = targv[3][i];
outputs[i+1].entries[k].token[1] = '\0';
outputs[i+1].entries[k].enumtype_ptr = 0;
}
/*
* parse nextState
*/
outputs[0].entries =
REALLOC(struct Entry, outputs[0].entries, np);
outputs[0].entries[k].token = util_strsav(targv[2]);
outputs[0].entries[k].enumtype_ptr = 0;
if (!check_dont_care(outputs[0].entries[k].token)) {
found = FALSE;
for (j=0; j<enumtypes[0].ns; j++) {
if (!strcmp(outputs[0].entries[k].token,
enumtypes[0].symbols[j].token)) {
outputs[0].entries[k].symbol_ptr = j;
found = TRUE;
break;
}
}
if (!found) {
enumtypes[0].ns++;
enumtypes[0].symbols = REALLOC(struct Symbol,
enumtypes[0].symbols, enumtypes[0].ns);
m = enumtypes[0].ns-1;
outputs[0].entries[k].symbol_ptr = m;
enumtypes[0].symbols[m].token =
util_strsav(outputs[0].entries[k].token);
enumtypes[0].symbols[m].code_ptr = m;
/*
* assign codes
*/
enumtypes[0].codes[m].assigned = TRUE;
enumtypes[0].codes[m].symbol_ptr = m;
}
}
} else {
(void) fprintf(stderr, "warning: ignored incorrect input ...\n");
(void) fprintf(stderr, "----> %s", line);
}
}
/*
* check to make sure a truth table was read in
*/
if (!iflag || !oflag || !sflag) {
(void) fprintf(stderr, "jedi: unable to find input truth table\n");
exit(1);
}
/*
* initialize connectivity matrix to be
* computed when the weights are computed
*/
enumtypes[0].links = ALLOC(struct Link *, enumtypes[0].ns);
for (i=0; i<enumtypes[0].ns; i++) {
enumtypes[0].links[i] =
ALLOC(struct Link, enumtypes[0].ns);
}
for (i=0; i<enumtypes[0].ns; i++) {
for (j=0; j<enumtypes[0].ns; j++) {
enumtypes[0].links[i][j].weight = 0; /* undefined */
}
}
/*
* set reset state
*/
if (reset_state == NIL(char)) {
reset_state = util_strsav(enumtypes[0].symbols[0].token);
}
/*
* determine total inputs and total outputs
*/
tni = ni + enumtypes[0].nb - 1;
tno = no + enumtypes[0].nb - 1;
} /* end of read_kiss */
char *
mk_var_name()
{
char buffer[BUFSIZE];
(void) sprintf(buffer, "v.%d", dummy_count++);
return util_strsav(buffer);
} /* end of mk_var_name */