96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
/*
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* Copyright (c) 2001-2025 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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# include "bufif.h"
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# include "schedule.h"
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# include "statistics.h"
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# include <iostream>
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# include <cassert>
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vvp_fun_bufif::vvp_fun_bufif(bool en_invert, bool out_invert,
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unsigned str0, unsigned str1)
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: pol_(en_invert? 1 : 0), inv_(out_invert? 1 : 0)
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{
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drive0_ = str0;
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drive1_ = str1;
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count_functors_bufif += 1;
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}
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void vvp_fun_bufif::recv_vec4(vvp_net_ptr_t ptr, const vvp_vector4_t&bit,
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vvp_context_t)
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{
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switch (ptr.port()) {
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case 0:
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bit_ = inv_? ~bit : bit;
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break;
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case 1:
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en_ = pol_? ~bit : bit;
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break;
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default:
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return;
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}
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vvp_vector8_t out (bit.size());
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for (unsigned idx = 0 ; idx < bit.size() ; idx += 1) {
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vvp_bit4_t b_en = en_.value(idx);
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vvp_bit4_t b_bit = bit_.value(idx);
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switch (b_en) {
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case BIT4_0:
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out.set_bit(idx, vvp_scalar_t(BIT4_Z,drive0_,drive1_));
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break;
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case BIT4_1:
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if (bit4_is_xz(b_bit))
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out.set_bit(idx, vvp_scalar_t(BIT4_X,drive0_,drive1_));
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else
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out.set_bit(idx, vvp_scalar_t(b_bit,drive0_,drive1_));
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break;
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default:
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switch (b_bit) {
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case BIT4_0:
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out.set_bit(idx, vvp_scalar_t(BIT4_X,drive0_,0));
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break;
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case BIT4_1:
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out.set_bit(idx, vvp_scalar_t(BIT4_X,0,drive1_));
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break;
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default:
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out.set_bit(idx, vvp_scalar_t(BIT4_X,drive0_,drive1_));
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break;
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}
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break;
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}
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}
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ptr.ptr()->send_vec8(out);
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}
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void vvp_fun_bufif::recv_vec4_pv(vvp_net_ptr_t ptr, const vvp_vector4_t&bit,
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unsigned base, unsigned vwid, vvp_context_t ctx)
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{
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recv_vec4_pv_(ptr, bit, base, vwid, ctx);
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}
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void vvp_fun_bufif::recv_real(vvp_net_ptr_t ptr, double real,
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vvp_context_t ctx)
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{
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recv_vec4(ptr, double_to_vector4_LSB(real), ctx);
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}
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