129 lines
2.8 KiB
C++
129 lines
2.8 KiB
C++
/*
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* Copyright (c) 2002 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_oct.cc,v 1.4 2006/02/21 02:39:27 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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extern const char oct_digits[64];
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void vpip_oct_str_to_vec4(vvp_vector4_t&val, const char*str)
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{
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unsigned str_len = strlen(str);
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char pad = '0';
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switch (str[0]) {
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case 'x':
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case 'X':
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pad = 'x';
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break;
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case 'z':
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case 'Z':
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pad = 'z';
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break;
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}
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for (unsigned idx = 0 ; idx < val.size() ; idx += 1) {
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unsigned tmp;
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unsigned bit_off = idx%3;
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unsigned str_off = idx/3;
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char ch;
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if (str_off >= str_len)
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ch = pad;
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else
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ch = str[str_len-str_off-1];
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switch (ch) {
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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tmp = ch - '0';
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val.set_bit(idx, ((tmp>>bit_off)&1)? BIT4_1 : BIT4_0);
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break;
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case 'x':
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case 'X':
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val.set_bit(idx, BIT4_X);
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break;
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case 'z':
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case 'Z':
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val.set_bit(idx, BIT4_Z);
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break;
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default:
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fprintf(stderr, "Unsupported digit %c(%d).\n", ch, ch);
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assert(0);
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break;
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}
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}
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}
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void vpip_vec4_to_oct_str(const vvp_vector4_t&bits, char*buf, unsigned nbuf,
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bool signed_flag)
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{
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unsigned slen = (bits.size() + 2) / 3;
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assert(slen < nbuf);
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buf[slen] = 0;
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unsigned val = 0;
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for (unsigned idx = 0 ; idx < bits.size() ; idx += 1) {
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unsigned vs = (idx%3) * 2;
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switch (bits.value(idx)) {
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case BIT4_0:
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break;
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case BIT4_1:
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val |= 1 << vs;
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break;
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case BIT4_X:
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val |= 2 << vs;
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break;
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case BIT4_Z:
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val |= 3 << vs;
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}
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if (vs == 4) {
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slen -= 1;
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buf[slen] = oct_digits[val];
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val = 0;
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}
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}
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if (slen > 0) {
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slen -= 1;
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buf[slen] = oct_digits[val];
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}
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}
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