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spef.cc
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spef.cc
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/*************************************************************************
*
* Copyright (c) 2022-2024 Rajit Manohar
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
**************************************************************************
*/
#include <stdio.h>
#include <string.h>
#include <common/misc.h>
#include <common/ext.h>
#include "spef.h"
#define MAP_GET_PTR(x) SPEF_GET_PTR(x)
#define MAP_MK_ABS(x) ((ActId *) (((unsigned long)(x))|1))
#define MAP_MK_REF(x) ((ActId *) (((unsigned long)(x))|2))
#define MAP_IS_REF(x) (((unsigned long)x) & 2)
#define MAP_IS_ABS(x) SPEF_IS_ABS(x)
static void spef_warning (LEX_T *l, const char *s)
{
warning ("SPEF parsing error: looking-at: `%s'\n\t%s\n%s",
lex_tokenstring (l), s, lex_errstring (l));
}
static int lex_have_number (LEX_T *l, float *d)
{
if (lex_sym (l) == l_integer) {
*d = lex_integer (l);
lex_getsym (l);
return 1;
}
else if (lex_sym (l) == l_real) {
*d = lex_real (l);
lex_getsym (l);
return 1;
}
return 0;
}
static int lex_have_number (LEX_T *l, double *d)
{
if (lex_sym (l) == l_integer) {
*d = lex_integer (l);
lex_getsym (l);
return 1;
}
else if (lex_sym (l) == l_real) {
*d = lex_real (l);
lex_getsym (l);
return 1;
}
return 0;
}
#define SKIP_SC_OPTIONAL \
do { \
if (lex_have (_l, _star_sc)) { \
while (lex_have (_l, l_integer)) { \
float dummy; \
if (!lex_have (_l, _tok_colon)) { \
spef_warning (_l, "*SC error"); \
return false; \
} \
if (!lex_have_number (_l, &dummy)) { \
spef_warning (_l, "*SC error"); \
return false; \
} \
} \
} \
} while (0)
Spef::Spef(bool mangled_ids)
{
_l = NULL;
#define TOKEN(a,b) a = -1;
#include "spef.def"
_valid = 0;
_spef_version = NULL;
_design_name = NULL;
_date = NULL;
_vendor = NULL;
_program = NULL;
_version = NULL;
_tok_hier_delim = -1;
_tok_pin_delim = -1;
_tok_prefix_bus_delim = -1;
_tok_suffix_bus_delim = -1;
_nH = NULL;
_divider = '?';
_delimiter = '?';
_bus_suffix_delim = '?';
_bus_prefix_delim = '?';
A_INIT (_power_nets);
A_INIT (_gnd_nets);
A_INIT (_ports);
A_INIT (_phyports);
A_INIT (_defines);
_nets = NULL;
if (mangled_ids) {
_a = ActNamespace::Act();
if (!_a) {
_a = new Act();
}
}
else {
_a = NULL;
}
}
static void _free_id (ActId *id)
{
if (!id) return;
if (!MAP_IS_REF (id)) {
delete MAP_GET_PTR (id);
}
}
Spef::~Spef()
{
if (_l) {
lex_free (_l);
_l = NULL;
}
if (_spef_version) {
FREE (_spef_version);
}
if (_design_name) {
FREE (_design_name);
}
if (_date) {
FREE (_date);
}
if (_vendor) {
FREE (_vendor);
}
if (_program) {
FREE (_program);
}
if (_version) {
FREE (_version);
}
if (_nH) {
ihash_bucket_t *b;
ihash_iter_t it;
ihash_iter_init (_nH, &it);
while ((b = ihash_iter_next (_nH, &it))) {
if (b->v) {
ActId *id = MAP_GET_PTR (b->v);
delete id;
}
}
ihash_free (_nH);
_nH = NULL;
}
for (int i=0; i < A_LEN (_power_nets); i++) {
_free_id (_power_nets[i]);
}
for (int i=0; i < A_LEN (_gnd_nets); i++) {
_free_id (_gnd_nets[i]);
}
A_FREE (_power_nets);
A_FREE (_gnd_nets);
for (int i=0; i < A_LEN (_ports); i++) {
if (_ports[i].a) {
FREE (_ports[i].a);
}
if (_ports[i].inst) {
_free_id (_ports[i].inst);
}
_free_id (_ports[i].port);
}
A_FREE (_ports);
for (int i=0; i < A_LEN (_phyports); i++) {
if (_phyports[i].a) {
FREE (_phyports[i].a);
}
_free_id (_phyports[i].inst);
_free_id (_phyports[i].port);
}
A_FREE (_phyports);
for (int i=0; i < A_LEN (_defines); i++) {
_free_id (_defines[i].inst);
if (_defines[i].design_name) {
FREE (_defines[i].design_name);
}
}
A_FREE (_defines);
}
bool Spef::Read (const char *name)
{
FILE *fp = fopen (name, "r");
if (!fp) {
fprintf (fp, "Spef::Read(): Could not open file `%s'", name);
return false;
}
bool ret = Read (fp);
return ret;
}
bool Spef::Read (FILE *fp)
{
_l = lex_file (fp);
/*-- add tokens --*/
#define TOKEN(a,b) a = lex_addtoken (_l, b);
#include "spef.def"
lex_getsym (_l);
if (!_read_header ()) {
return false;
}
if (!_read_units ()) {
return false;
}
if (!_read_name_map ()) {
return false;
}
if (!_read_power_def ()) {
return false;
}
if (!_read_external_def ()) {
return false;
}
if (!_read_define_def ()) {
return false;
}
if (!_read_variation_def ()) {
return false;
}
if (!_read_internal_def ()) {
return false;
}
if (!lex_eof (_l)) {
spef_warning (_l, "parsing ended without EOF?");
}
lex_free (_l);
_l = NULL;
_valid = 1;
return true;
}
char *Spef::_prevString ()
{
char *tmp = Strdup (lex_prev (_l) + 1);
tmp[strlen(tmp)-1] = '\0';
return tmp;
}
bool Spef::_read_header ()
{
#define GET_STR(a,b,msg) \
do { \
if (!lex_have (_l, a)) { \
spef_warning (_l, "missing " msg); \
return false; \
} \
if (lex_have (_l, l_string)) { \
b = _prevString (); \
} \
else { \
spef_warning (_l, "invalid " msg); \
return false; \
} \
} while (0)
GET_STR(_star_spef, _spef_version, "*SPEF in header");
GET_STR(_star_design, _design_name, "*DESIGN in header");
GET_STR(_star_date, _date, "*DATE in header");
GET_STR(_star_vendor, _vendor, "*VENDOR in header");
GET_STR(_star_program, _program, "*PROGRAM in header");
GET_STR(_star_version, _version, "*VERSION in header");
if (!lex_have (_l, _star_design_flow)) {
spef_warning (_l, "missing *DESIGN_FLOW in header");
return false;
}
if (lex_sym (_l) != l_string) {
spef_warning (_l, "invalid *DESIGN_FLOW in header");
}
while (lex_have (_l, l_string)) {
/* grab string (page 592: check strings here) */
}
if (!lex_have (_l, _star_divider)) {
spef_warning (_l, "missing *DIVIDER in header");
}
/* ., /, :, or | */
if (strcmp (lex_tokenstring (_l), ".") == 0 ||
strcmp (lex_tokenstring (_l), "/") == 0 ||
strcmp (lex_tokenstring (_l), ":") == 0 ||
strcmp (lex_tokenstring (_l), "|") == 0) {
_tok_hier_delim = lex_addtoken (_l, lex_tokenstring (_l));
_divider = lex_tokenstring(_l)[0];
}
else {
spef_warning (_l, "*DIVIDER must be one of . / : |");
return false;
}
lex_getsym (_l);
if (!lex_have (_l, _star_delimiter)) {
spef_warning (_l, "missing *DELIMITER in header");
return false;
}
/* ., /, :, or | */
if (strcmp (lex_tokenstring (_l), ".") == 0 ||
strcmp (lex_tokenstring (_l), "/") == 0 ||
strcmp (lex_tokenstring (_l), ":") == 0 ||
strcmp (lex_tokenstring (_l), "|") == 0) {
_tok_pin_delim = lex_addtoken (_l, lex_tokenstring (_l));
_delimiter = lex_tokenstring(_l)[0];
}
else {
spef_warning (_l, "*DELIMITER must be one of . / : |");
return false;
}
lex_getsym (_l);
if (!lex_have (_l, _star_bus_delimiter)) {
spef_warning (_l, "missing *BUS_DELIMITER in header");
return false;
}
if (strcmp (lex_tokenstring (_l), "[") == 0 ||
strcmp (lex_tokenstring (_l), "{") == 0 ||
strcmp (lex_tokenstring (_l), "(") == 0 ||
strcmp (lex_tokenstring (_l), "<") == 0 ||
strcmp (lex_tokenstring (_l), ":") == 0 ||
strcmp (lex_tokenstring (_l), ".") == 0) {
_tok_prefix_bus_delim = lex_addtoken (_l, lex_tokenstring (_l));
_bus_prefix_delim = lex_tokenstring(_l)[0];
}
else {
spef_warning (_l, "*BUS_DELIMITER must be one of [ { ( < : .");
return false;
}
lex_getsym (_l);
if (strcmp (lex_tokenstring (_l), "]") == 0 ||
strcmp (lex_tokenstring (_l), "}") == 0 ||
strcmp (lex_tokenstring (_l), ")") == 0 ||
strcmp (lex_tokenstring (_l), ">") == 0) {
_tok_suffix_bus_delim = lex_addtoken (_l, lex_tokenstring (_l));
_bus_suffix_delim = lex_tokenstring(_l)[0];
lex_getsym (_l);
}
return true;
}
bool Spef::_read_units ()
{
double val;
if (!lex_have (_l, _star_t_unit)) {
spef_warning (_l, "*T_UNIT missing");
return false;
}
if (!lex_have_number (_l, &val)) {
spef_warning (_l, "*T_UNIT expected number");
return false;
}
if (val < 0) {
spef_warning (_l, "*T_UNIT expected positive number");
return false;
}
if (lex_have_keyw (_l, "NS")) {
val = val*1e-9;
}
else if (lex_have_keyw (_l, "PS")) {
val = val*1e-12;
}
else {
spef_warning (_l, "*T_UNIT expected NS or PS");
return false;
}
_time_unit = val;
if (!lex_have (_l, _star_c_unit)) {
spef_warning (_l, "*C_UNIT missing");
return false;
}
if (!lex_have_number (_l, &val)) {
spef_warning (_l, "*C_UNIT expected number");
return false;
}
if (val < 0) {
spef_warning (_l, "*C_UNIT expected positive number");
return false;
}
if (lex_have_keyw (_l, "PF")) {
val = val*1e-12;
}
else if (lex_have_keyw (_l, "FF")) {
val = val*1e-15;
}
else {
spef_warning (_l, "*C_UNIT expected PF or FF");
return false;
}
_c_unit = val;
if (!lex_have (_l, _star_r_unit)) {
spef_warning (_l, "*R_UNIT missing");
return false;
}
if (!lex_have_number (_l, &val)) {
spef_warning (_l, "*R_UNIT expected number");
return false;
}
if (val < 0) {
spef_warning (_l, "*R_UNIT expected positive number");
return false;
}
if (lex_have_keyw (_l, "OHM")) {
/* nothing */
}
else if (lex_have_keyw (_l, "KOHM")) {
val = val*1e3;
}
else {
spef_warning (_l, "*R_UNIT expected OHM or KOHM");
return false;
}
_r_unit = val;
if (!lex_have (_l, _star_l_unit)) {
spef_warning (_l, "*L_UNIT missing");
return false;
}
if (!lex_have_number (_l, &val)) {
spef_warning (_l, "*L_UNIT expected number");
return false;
}
if (val < 0) {
spef_warning (_l, "*L_UNIT expected positive number");
return false;
}
if (lex_have_keyw (_l, "MH")) {
val = val*1e-3;
}
else if (lex_have_keyw (_l, "UH")) {
val = val*1e-6;
}
else if (lex_have_keyw (_l, "HENRY")) {
/* nothing */
}
else {
spef_warning (_l, "*L_UNIT expected HENRY or MH or UH");
return false;
}
_l_unit = val;
return true;
}
bool Spef::_read_name_map ()
{
ihash_bucket_t *b;
if (!lex_have (_l, _star_name_map)) {
/* no name map */
return true;
}
_nH = ihash_new (16);
while (strcmp (lex_tokenstring (_l), "*") == 0) {
lex_getsym (_l);
if (strcmp (lex_whitespace (_l), "") != 0) {
spef_warning (_l, "space after *, ignoring");
}
if (lex_sym (_l) == l_integer) {
/* we're good */
b = ihash_lookup (_nH, lex_integer (_l));
if (b) {
spef_warning (_l, "duplicate integer; using latest map");
}
else {
b = ihash_add (_nH, lex_integer (_l));
b->v = NULL;
}
lex_getsym (_l);
}
else {
spef_warning (_l, "missing integer after * in name map");
return false;
}
b->v = _getTokPhysicalRef ();
if (!b->v) {
b->v = _getTokPath ();
}
if (!b->v) {
spef_warning (_l, "error parsing name");
return false;
}
#if 0
printf (">> %d maps to ", (int)b->key);
MAP_GET_PTR(b->v)->Print (stdout);
printf ("\n");
#endif
}
return true;
}
bool Spef::_read_power_def ()
{
ActId *tmp;
if (lex_have (_l, _star_power_nets)) {
/* power definition */
while ((tmp = _getTokPath()) || (tmp = _getTokPhysicalRef())) {
A_NEW (_power_nets, ActId *);
A_NEXT (_power_nets) = tmp;
A_INC (_power_nets);
}
if (A_LEN (_power_nets) == 0) {
spef_warning (_l, "*POWER_NETS error");
return false;
}
}
if (lex_have (_l, _star_ground_nets)) {
/* ground def */
while ((tmp = _getTokPath()) || (tmp = _getTokPhysicalRef())) {
A_NEW (_gnd_nets, ActId *);
A_NEXT (_gnd_nets) = tmp;
A_INC (_gnd_nets);
}
if (A_LEN (_gnd_nets) == 0) {
spef_warning (_l, "*POWER_NETS error");
return false;
}
}
return true;
}
bool Spef::_getPinPortInternal (spef_node *n)
{
ActId *tmp, *tmp2;
lex_push_position (_l);
if ((tmp = _getIndex()) || (tmp = _getTokPath()) || (tmp = _getTokName())) {
if (_tok_pin_delim != -1 && lex_have (_l, _tok_pin_delim)) {
tmp2 = _getIndex();
if (!tmp2) {
tmp2 = _getTokPath ();
}
if (!tmp2) {
lex_set_position (_l);
lex_pop_position (_l);
spef_warning (_l, "port name error");
return false;
}
n->inst = tmp;
n->pin = tmp2;
}
else {
tmp2 = MAP_GET_PTR (tmp);
if (tmp2->Rest() && !_a) {
lex_set_position (_l);
lex_pop_position (_l);
spef_warning (_l, "port name error");
return false;
}
n->inst = NULL;
n->pin = tmp;
}
if (_tok_pin_delim != -1 && lex_have (_l, _tok_pin_delim)) {
if (lex_sym (_l) == l_integer) {
Assert (n->inst == NULL, "What?");
n->inst = n->pin;
n->pin = new ActId (lex_tokenstring (_l));
lex_getsym (_l);
}
}
lex_pop_position (_l);
return true;
}
lex_set_position (_l);
lex_pop_position (_l);
return false;
}
bool Spef::_getPortName (bool isphy, ActId **inst_name, ActId **port)
{
ActId *tmp, *tmp2;
lex_push_position (_l);
if ((tmp = _getIndex()) || (!isphy && (tmp = _getTokPath())) ||
(isphy && (tmp = _getTokName()))) {
if (_tok_pin_delim != -1 && lex_have (_l, _tok_pin_delim)) {
tmp2 = _getIndex();
if (!tmp2) {
tmp2 = _getTokPath ();
}
if (!tmp2) {
lex_set_position (_l);
lex_pop_position (_l);
return false;
}
*inst_name = tmp;
*port = tmp2;
lex_pop_position (_l);
return true;
}
else {
tmp2 = MAP_GET_PTR (tmp);
if (tmp2->Rest() && !_a) {
lex_set_position (_l);
lex_pop_position (_l);
spef_warning (_l, "port name error3");
return false;
}
*inst_name = NULL;
*port = tmp;
lex_pop_position (_l);
return true;
}
}
lex_set_position (_l);
lex_pop_position (_l);
return false;
}
static int lex_get_dir (LEX_T *l)
{
if (lex_have_keyw (l, "I")) {
return 0;
}
else if (lex_have_keyw (l, "O")) {
return 1;
}
else if (lex_have_keyw (l, "B")) {
return 2;
}
else {
return -1;
}
}
bool Spef::_read_external_def ()
{
int count = 0;
int tok;
int found = 0;
tok = _star_ports;
while (count < 2) {
count++;
if (lex_have (_l, tok)) {
ActId *inst, *port;
bool once = false;
bool typ;
found = 1;
if (tok == _star_ports) {
typ = false;
}
else {
typ = true;
}
while (_getPortName (typ, &inst, &port)) {
int dir;
once = true;
dir = lex_get_dir (_l);
if (dir == -1) {
spef_warning (_l, "direction error");
return false;
}
spef_attributes *a = _getAttributes ();
/*-- save this away --*/
if (typ == false) {
A_NEW (_ports, spef_ports);
A_NEXT (_ports).a = a;
A_NEXT (_ports).inst = inst;
A_NEXT (_ports).port = port;
A_NEXT (_ports).dir = dir;
A_INC (_ports);
}
else {
A_NEW (_phyports, spef_ports);
A_NEXT (_phyports).a = a;
A_NEXT (_phyports).inst = inst;
A_NEXT (_phyports).port = port;
A_NEXT (_phyports).dir = dir;
A_INC (_phyports);
}
}
if (!once) {
spef_warning (_l, "unexpected error");
return false;
}
}
tok = _star_physical_ports;
}
return true;
}
bool Spef::_read_define_def ()
{
while (1) {
if (lex_have (_l, _star_define)) {
int idx;
ActId *tmp;
idx = A_LEN (_defines);
while ((tmp = _getIndex()) || (tmp = _getTokPath())) {
A_NEW (_defines, spef_defines);
A_NEXT (_defines).phys = 0;
A_NEXT (_defines).inst = tmp;
A_NEXT (_defines).design_name = NULL;
A_INC (_defines);
}
if (idx == A_LEN (_defines)) {
spef_warning (_l, "*DEFINE error");
return false;
}
char *str;
if (lex_have (_l, l_string)) {
str = _prevString();
}
else {
spef_warning (_l, "*DEFINE error");
return false;
}
while (idx < A_LEN (_defines)) {
if (str) {
_defines[idx].design_name = str;
str = NULL;
}
else {
_defines[idx].design_name = Strdup (_defines[idx-1].design_name);
}
idx++;
}
}
else if (lex_have (_l, _star_pdefine)) {
ActId *tmp;
if ((tmp = _getIndex()) || (tmp = _getTokPath())) {
A_NEW (_defines, spef_defines);
A_NEXT (_defines).phys = 1;
A_NEXT (_defines).inst = tmp;
A_NEXT (_defines).design_name = NULL;
A_NEXT (_defines).spef = NULL;
}
else {
spef_warning (_l, "*PDEFINE error");
return false;
}
if (lex_have (_l, l_string)) {
A_NEXT (_defines).design_name = _prevString();
A_INC (_defines);
}
else {
A_INC (_defines);
spef_warning (_l, "*PDEFINE error");
return false;
}
}
else {
return true;
}
}
}
bool Spef::_read_variation_def ()
{
if (!lex_have (_l, _star_variation_parameters)) {
return true;
}
fatal_error ("Need to parse *VARIATION_PARAMETERS!");
return true;
}
// custom hash functions
static int idhash (int sz, void *key)
{
ActId *id = (ActId *) key;
return id->getHash (0, sz);
}
static int idmatch (void *k1, void *k2)
{
ActId *id1 = (ActId *) k1;
ActId *id2 = (ActId *) k2;
return id1->isEqual (id2);
}
static void *iddup (void *k)
{
ActId *id = (ActId *)k;
// don't clone.
return k;
}
static void idfree (void *k)
{
ActId *id = (ActId *) k;
delete id;
}
static void idprint (FILE *fp, void *k)
{
// nothing
}
struct cHashtable *idhash_new (int sz)
{
struct cHashtable *cH = chash_new (4);
cH->hash = idhash;
cH->match = idmatch;
cH->dup = iddup;
cH->free = idfree;
cH->print = idprint;
return cH;
}
bool Spef::_read_internal_def ()
{
bool found = false;
spef_net *net;
_nets = idhash_new (4);
while (lex_sym (_l) == _star_d_net || lex_sym (_l) == _star_r_net ||
lex_sym (_l) == _star_d_pnet || lex_sym (_l) == _star_r_pnet) {
bool phys = false;
chash_bucket_t *cb;
found = true;
net = new spef_net();
if (lex_sym (_l) == _star_d_net) {
net->type = 0;
}
else if (lex_sym (_l) == _star_d_pnet) {
net->type = 2;
}
else if (lex_sym (_l) == _star_r_net) {
net->type = 1;
}
else {
net->type = 3;
}
if (lex_sym (_l) == _star_d_pnet || lex_sym (_l) == _star_r_pnet) {
phys = true;
}
if (lex_have (_l, _star_d_net) || lex_have (_l, _star_d_pnet)) {
if (!((net->net = _getIndex()) || (!phys && (net->net = _getTokPath()))
|| (phys && (net->net = _getTokPhysicalRef())))) {
spef_warning (_l, "*D_NET error");
delete net;
return false;
}
if (!_getParasitics (&net->tot_cap)) {
spef_warning (_l, "*D_NET cap error");
delete net;
return false;
}
/* routing conf = routing confidence value
10 = statistical wire load model
20 = physical wire load model
30 = physical partitions with locations, no cell placement
40 = estimated cell placement with steiner tree based route
50 = estimated cell placement with global route
60 = final cell placement with steiner route
70 = final cell placement with global route
80 = final cell placement, final route, 2d extraction
90 = final cell placement, final route, 2.5d extraction
100 = final cell placement, final route, 3d extraction
*/
net->routing_confidence = -1;
if (lex_have (_l, _star_v)) {
if (lex_sym (_l) == l_integer) {
net->routing_confidence = lex_integer (_l);
lex_getsym (_l);
}
else {
spef_warning (_l, "*D_NET routing confidence error");
delete net;
return false;
}
}
if (lex_have (_l, _star_conn)) {
/* optional connection section */
/* *P or *I parts */
bool found = false;
while (lex_sym (_l) == _star_p || lex_sym (_l) == _star_i) {
spef_conn *conn;
A_NEW (net->u.d.conn, spef_conn);
conn = &A_NEXT (net->u.d.conn);
A_INC (net->u.d.conn);
conn->a = NULL;
conn->inst = NULL;
conn->pin = NULL;
ActId *inst = NULL, *pin = NULL;
int dir;
found = true;
if (lex_have (_l, _star_p)) {
/* port name or pport name */
if (!(!phys && _getPortName (false, &inst, &pin)) &&
!_getPortName (true, &inst, &pin)) {
spef_warning (_l, "*P missing port");
delete net;
return false;
}
conn->type = 0;
}
else if (lex_have (_l, _star_i)) {
/* pin name or pnode ref */
if ((inst = _getIndex()) ||
(!phys && (inst = _getTokPath()))) {
/* pin delim */
if (!lex_have (_l, _tok_pin_delim)) {
spef_warning (_l, "*I pin error");
delete net;
return false;
}
pin = _getIndex();
if (!pin) {
if (!phys) {
pin = _getTokPath();
}
else {
pin = _getTokPhysicalRef();
}
if (!pin) {
spef_warning (_l, "*I pin error");
delete net;
return false;
}
}
}
else if ((inst = _getTokPhysicalRef ())) {
if (!lex_have (_l, _tok_pin_delim)) {
spef_warning (_l, "*I pin error");
delete net;
return false;
}
pin = _getIndex();
if (!pin) {
if (!phys) {
pin = _getTokName();
}
else {