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netgen
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New command option "model blackbox on|off" makes "readnet spice" 

treat empty subcircuits as blackbox cells automatically without
requiring specific callse to "model <cell> blackbox" for each.
Enabled in LVS script by giving option "-blackbox" at the end
of the LVS command.
This commit is contained in:
Tim Edwards 2017-06-19 17:41:31 -04:00
parent b6218699a9
commit 05d4225e97
4 changed files with 34 additions and 1 deletions
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2
base/netgen.h
View File

@ -53,6 +53,8 @@ extern void PortList(char *prefix, char *list_template);
extern char *Cell(char *inststr, char *model, ...);
extern int IsIgnored(char *, int);
extern int auto_blackbox; /* For handling empty subcircuits */
/* netcmp.c */
extern struct nlist *LookupClassEquivalent(char *model, int file1, int file2);
extern void AssignCircuits(char *name1, int file1, char *name2, int file2);

9
base/spice.c
View File

@ -44,6 +44,10 @@ the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
// Global storage for parameters from .PARAM
struct hashdict spiceparams;
// Global setting for auto-detect of empty subcircuits as
// black-box subcells.
int auto_blackbox = FALSE;
// Check if a token represents a numerical value (with
// units) or an expression. This is basically a hack
// to see if it either passes StringIsValue() or is
@ -400,6 +404,7 @@ int renamepins(struct hashlist *p, int file)
void CleanupSubcell() {
int maxnode = 0;
int has_devices = FALSE;
struct objlist *sobj, *nobj, *lobj, *pobj;
if (CurrentCell == NULL) return;
@ -411,6 +416,8 @@ void CleanupSubcell() {
lobj = NULL;
for (sobj = CurrentCell->cell; sobj != NULL;) {
nobj = sobj->next;
if (sobj->type == FIRSTPIN)
has_devices = TRUE;
if (sobj->node < 0) {
if (IsGlobal(sobj)) {
if (lobj != NULL)
@ -439,6 +446,8 @@ void CleanupSubcell() {
lobj = sobj;
sobj = nobj;
}
if ((has_devices == FALSE) && (auto_blackbox == TRUE))
SetClass(CLASS_MODULE);
}
/*------------------------------------------------------*/

3
tcltk/netgen.tcl.in
View File

@ -381,6 +381,9 @@ proc netgen::lvs { name1 name2 {setupfile setup.tcl} {logfile comp.out} args} {
set dolist 1
set dojson 1
set lvs_final {}
} elseif {$arg == "-blackbox"} {
puts stdout "Treating empty subcircuits as black-box cells"
netgen::model blackbox on
}
}

21
tcltk/tclnetgen.c
View File

@ -1528,8 +1528,27 @@ _netgen_model(ClientData clientData,
return TCL_ERROR;
}
/* Check for "model blackbox on|off" */
/* Behavior is to treat empty subcircuits as blackbox cells */
if ((objc > 1) && !strcmp(Tcl_GetString(objv[1]), "blackbox")) {
if ((objc > 2) && !strcmp(Tcl_GetString(objv[2]), "on")) {
auto_blackbox = TRUE;
return TCL_OK;
}
else if ((objc > 2) && !strcmp(Tcl_GetString(objv[2]), "off")) {
auto_blackbox = FALSE;
return TCL_OK;
}
else if (objc == 2) {
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(auto_blackbox));
return TCL_OK;
}
}
result = CommonParseCell(interp, objv[1], &tp, &fnum);
if (result != TCL_OK) return result;
if (result != TCL_OK)
return result;
if (objc == 3) {
model = Tcl_GetString(objv[2]);