100 lines
2.5 KiB
C++
100 lines
2.5 KiB
C++
/*
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* Copyright (c) 2002-2006 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CVS_IDENT
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#ident "$Id: vpip_bin.cc,v 1.4 2006/08/03 05:05:06 steve Exp $"
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#endif
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# include "config.h"
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# include "vpi_priv.h"
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# include <stdio.h>
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# include <string.h>
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# include <limits.h>
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# include <stdlib.h>
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#ifdef HAVE_MALLOC_H
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# include <malloc.h>
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#endif
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# include <assert.h>
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void vpip_bin_str_to_vec4(vvp_vector4_t&vec4,
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const char*buf, bool signed_flag)
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{
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const char*ebuf = buf + strlen(buf);
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vvp_bit4_t last = BIT4_0;
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unsigned idx = 0;
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while (ebuf > buf) {
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vvp_bit4_t val;
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if (idx == vec4.size())
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break;
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ebuf -= 1;
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switch (*ebuf) {
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case '0': val = BIT4_0; break;
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case '1': val = BIT4_1; break;
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case 'x':
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case 'X': val = BIT4_X; break;
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case 'z':
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case 'Z': val = BIT4_Z; break;
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default: val = BIT4_0; break;
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}
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last = val;
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vec4.set_bit(idx, val);
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idx += 1;
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}
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/* Calculate the pad value based on the top bit and the signed
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flag. We may sign extend or zero extend. */
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switch (last) {
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case BIT4_0:
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last = BIT4_0;
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break;
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case BIT4_1:
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last = signed_flag? BIT4_1 : BIT4_0;
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break;
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case BIT4_X:
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last = BIT4_X;
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break;
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case BIT4_Z:
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last = BIT4_Z;
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break;
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}
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while (idx < vec4.size())
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vec4.set_bit(idx++, last);
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}
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/*
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* $Log: vpip_bin.cc,v $
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* Revision 1.4 2006/08/03 05:05:06 steve
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* Fix infinite loop padding binary string to result.
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*
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* Revision 1.3 2006/02/21 05:31:54 steve
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* Put strings for reg objects.
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*
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* Revision 1.2 2002/08/12 01:35:09 steve
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* conditional ident string using autoconfig.
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*
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* Revision 1.1 2002/05/11 04:39:35 steve
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* Set and get memory words by string value.
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*
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*/
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