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mangle.c
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mangle.c
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/*
* Copyright (c) 2001 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU
* General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: mangle.c,v 1.6 2002/08/12 01:35:03 steve Exp $"
#endif
# include "fpga_priv.h"
# include <string.h>
#ifdef HAVE_MALLOC_H
# include <malloc.h>
#endif
# include <stdlib.h>
static size_t xnf_mangle_scope_name(ivl_scope_t net, char*buf, size_t nbuf)
{
unsigned cnt = 0;
ivl_scope_t parent = ivl_scope_parent(net);
if (parent) {
cnt = xnf_mangle_scope_name(parent, buf, nbuf);
buf += cnt;
nbuf -= cnt;
*buf++ = '/';
nbuf -= 1;
cnt += 1;
}
strcpy(buf, ivl_scope_basename(net));
cnt += strlen(buf);
return cnt;
}
void xnf_mangle_logic_name(ivl_net_logic_t net, char*buf, size_t nbuf)
{
size_t cnt = xnf_mangle_scope_name(ivl_logic_scope(net), buf, nbuf);
buf[cnt++] = '/';
strcpy(buf+cnt, ivl_logic_basename(net));
}
void xnf_mangle_lpm_name(ivl_lpm_t net, char*buf, size_t nbuf)
{
size_t cnt = xnf_mangle_scope_name(ivl_lpm_scope(net), buf, nbuf);
buf[cnt++] = '/';
strcpy(buf+cnt, ivl_lpm_basename(net));
}
/*
* Nexus names are used in pin records to connect things together. It
* almost doesn't matter what the nexus name is, but for readability
* we choose a name that is close to the nexus name. This function
* converts the existing name to a name that XNF can use.
*
* For speed, this function saves the calculated string into the real
* nexus by using the private pointer. Every nexus is used at least
* twice, so this cuts the mangling time in half at least.
*/
const char* xnf_mangle_nexus_name(ivl_nexus_t net)
{
char*name = ivl_nexus_get_private(net);
char*cp;
if (name != 0) {
return name;
}
name = malloc(strlen(ivl_nexus_name(net)) + 1);
strcpy(name, ivl_nexus_name(net));
for (cp = name ; *cp ; cp += 1) switch (*cp) {
case '.':
*cp = '/';
break;
default:
break;
}
ivl_nexus_set_private(net, name);
return name;
}
/*
* $Log: mangle.c,v $
* Revision 1.6 2002/08/12 01:35:03 steve
* conditional ident string using autoconfig.
*
* Revision 1.5 2002/08/11 23:47:04 steve
* Add missing Log and Ident strings.
*
* Revision 1.4 2001/09/15 18:27:04 steve
* Make configure detect malloc.h
*
* Revision 1.3 2001/09/02 21:33:07 steve
* Rearrange the XNF code generator to be generic-xnf
* so that non-XNF code generation is also possible.
*
* Start into the virtex EDIF output driver.
*
* Revision 1.2 2001/08/30 04:31:05 steve
* Mangle nexus names.
*
* Revision 1.1 2001/08/28 04:14:20 steve
* Add the fpga target.
*
*/