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Making the "lef read" usage for annotation of an existing layout 

somewhat flexible with regard to pin name translations between
the LEF and the layout.
This commit is contained in:
Tim Edwards 2020-05-29 12:37:10 -04:00
parent bf061f0012
commit a57f024587
1 changed files with 77 additions and 6 deletions
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83
lef/lefRead.c
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@ -1379,10 +1379,12 @@ LefReadPin(lefMacro, f, pinname, pinNum, oscale, is_imported)
bool is_imported;
{
char *token;
char *testpin = pinname;
int keyword, subkey;
int pinDir = PORT_CLASS_DEFAULT;
int pinUse = PORT_USE_DEFAULT;
int pinShape = PORT_SHAPE_DEFAULT;
Label *firstlab;
static char *pin_keys[] = {
"DIRECTION",
@ -1456,6 +1458,72 @@ LefReadPin(lefMacro, f, pinname, pinNum, oscale, is_imported)
PORT_SHAPE_THRU
};
/* If LEF file is being imported to annotate an existing layout, then
* find the first label in the layout that matches the PIN record.
* If there are no matches, then test for various issues with
* delimiter translation and case sensitivity.
*/
if (is_imported)
{
/* Find the first matching label */
for (firstlab = lefMacro->cd_labels; firstlab; firstlab = firstlab->lab_next)
if (!strcmp(firstlab->lab_text, testpin))
break;
/* If no match was found, look for common issues */
/* such as bus delimiter translations or case */
/* sensitivity. */
if (firstlab == NULL)
{
char *delim;
testpin = (char *)mallocMagic(strlen(pinname) + 1);
strcpy(testpin, pinname);
if ((delim = strchr(testpin, '<')) != NULL)
{
*delim = '[';
if ((delim = strchr(testpin, '>')) != NULL)
*delim = ']';
}
else if ((delim = strchr(testpin, '[')) != NULL)
{
*delim = '<';
if ((delim = strchr(testpin, ']')) != NULL)
*delim = '>';
}
for (firstlab = lefMacro->cd_labels; firstlab; firstlab = firstlab->lab_next)
if (!strcmp(firstlab->lab_text, testpin))
break;
if (firstlab == NULL) /* No luck, so return to original */
{
freeMagic(testpin);
testpin = pinname;
}
}
if (firstlab == NULL)
{
for (firstlab = lefMacro->cd_labels; firstlab; firstlab = firstlab->lab_next)
if (!strcasecmp(firstlab->lab_text, testpin))
break;
if (firstlab != NULL) /* Case matching succeeded */
{
if (testpin == pinname)
testpin = (char *)mallocMagic(strlen(pinname) + 1);
strcpy(testpin, firstlab->lab_text);
}
}
if (firstlab == NULL) firstlab = lefMacro->cd_labels;
}
while ((token = LefNextToken(f, TRUE)) != NULL)
{
keyword = Lookup(token, pin_keys);
@ -1507,9 +1575,9 @@ LefReadPin(lefMacro, f, pinname, pinNum, oscale, is_imported)
/* However, if the label is a point label, then */
/* replace it with the geometry from the LEF file. */
for (lab = lefMacro->cd_labels; lab; lab = lab->lab_next)
for (lab = firstlab; lab; lab = lab->lab_next)
{
if (!strcmp(lab->lab_text, pinname))
if (!strcmp(lab->lab_text, testpin))
{
if (GEO_RECTNULL(&lab->lab_rect))
break;
@ -1542,18 +1610,20 @@ LefReadPin(lefMacro, f, pinname, pinNum, oscale, is_imported)
}
}
}
firstlab = (lab == NULL) ? NULL : lab->lab_next;
if (needRect)
{
if (lab == NULL)
DBEraseLabelsByContent(lefMacro, NULL, -1, pinname);
LefReadPort(lefMacro, f, pinname, pinNum, pinDir, pinUse,
DBEraseLabelsByContent(lefMacro, NULL, -1, testpin);
LefReadPort(lefMacro, f, testpin, pinNum, pinDir, pinUse,
pinShape, oscale, lab);
}
else
LefSkipSection(f, NULL);
}
else
LefReadPort(lefMacro, f, pinname, pinNum, pinDir, pinUse,
LefReadPort(lefMacro, f, testpin, pinNum, pinDir, pinUse,
pinShape, oscale, NULL);
break;
case LEF_CAPACITANCE:
@ -1569,7 +1639,7 @@ LefReadPin(lefMacro, f, pinname, pinNum, oscale, is_imported)
LefEndStatement(f); /* Ignore. . . */
break;
case LEF_PIN_END:
if (LefParseEndStatement(f, pinname) == 0)
if (LefParseEndStatement(f, testpin) == 0)
{
LefError(LEF_ERROR, "Pin END statement missing.\n");
keyword = -1;
@ -1577,6 +1647,7 @@ LefReadPin(lefMacro, f, pinname, pinNum, oscale, is_imported)
break;
}
if (keyword == LEF_PIN_END) break;
if (testpin != pinname) freeMagic(testpin);
}
}