mirror of https://github.com/YosysHQ/yosys.git
541 lines
18 KiB
C++
541 lines
18 KiB
C++
/*
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* yosys -- Yosys Open SYnthesis Suite
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*
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* Copyright (C) 2012 Claire Xenia Wolf <claire@yosyshq.com>
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* 2019 Eddie Hung <eddie@fpgeh.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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// [[CITE]] ABC
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// Berkeley Logic Synthesis and Verification Group, ABC: A System for Sequential Synthesis and Verification
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// http://www.eecs.berkeley.edu/~alanmi/abc/
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#include "kernel/register.h"
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#include "kernel/log.h"
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#ifndef _WIN32
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# include <unistd.h>
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# include <dirent.h>
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#endif
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#ifdef YOSYS_LINK_ABC
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namespace abc {
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int Abc_RealMain(int argc, char *argv[]);
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}
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#endif
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std::string fold_abc9_cmd(std::string str)
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{
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std::string token, new_str = " ";
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int char_counter = 10;
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for (size_t i = 0; i <= str.size(); i++) {
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if (i < str.size())
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token += str[i];
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if (i == str.size() || str[i] == ';') {
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if (char_counter + token.size() > 75)
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new_str += "\n ", char_counter = 14;
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new_str += token, char_counter += token.size();
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token.clear();
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}
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}
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return new_str;
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}
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USING_YOSYS_NAMESPACE
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PRIVATE_NAMESPACE_BEGIN
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std::string add_echos_to_abc9_cmd(std::string str)
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{
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std::string new_str, token;
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for (size_t i = 0; i < str.size(); i++) {
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token += str[i];
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if (str[i] == ';') {
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while (i+1 < str.size() && str[i+1] == ' ')
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i++;
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new_str += "echo + " + token + " " + token + " ";
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token.clear();
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}
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}
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if (!token.empty()) {
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if (!new_str.empty())
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new_str += "echo + " + token + "; ";
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new_str += token;
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}
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return new_str;
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}
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std::string replace_tempdir(std::string text, std::string tempdir_name, bool show_tempdir)
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{
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if (show_tempdir)
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return text;
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while (1) {
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size_t pos = text.find(tempdir_name);
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if (pos == std::string::npos)
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break;
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text = text.substr(0, pos) + "<abc-temp-dir>" + text.substr(pos + GetSize(tempdir_name));
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}
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std::string selfdir_name = proc_self_dirname();
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if (selfdir_name != "/") {
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while (1) {
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size_t pos = text.find(selfdir_name);
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if (pos == std::string::npos)
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break;
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text = text.substr(0, pos) + "<yosys-exe-dir>/" + text.substr(pos + GetSize(selfdir_name));
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}
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}
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return text;
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}
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struct abc9_output_filter
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{
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bool got_cr;
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int escape_seq_state;
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std::string linebuf;
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std::string tempdir_name;
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bool show_tempdir;
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abc9_output_filter(std::string tempdir_name, bool show_tempdir) : tempdir_name(tempdir_name), show_tempdir(show_tempdir)
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{
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got_cr = false;
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escape_seq_state = 0;
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}
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void next_char(char ch)
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{
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if (escape_seq_state == 0 && ch == '\033') {
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escape_seq_state = 1;
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return;
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}
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if (escape_seq_state == 1) {
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escape_seq_state = ch == '[' ? 2 : 0;
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return;
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}
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if (escape_seq_state == 2) {
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if ((ch < '0' || '9' < ch) && ch != ';')
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escape_seq_state = 0;
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return;
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}
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escape_seq_state = 0;
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if (ch == '\r') {
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got_cr = true;
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return;
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}
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if (ch == '\n') {
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log("ABC: %s\n", replace_tempdir(linebuf, tempdir_name, show_tempdir).c_str());
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got_cr = false, linebuf.clear();
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return;
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}
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if (got_cr)
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got_cr = false, linebuf.clear();
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linebuf += ch;
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}
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void next_line(const std::string &line)
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{
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//int pi, po;
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//if (sscanf(line.c_str(), "Start-point = pi%d. End-point = po%d.", &pi, &po) == 2) {
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// log("ABC: Start-point = pi%d (%s). End-point = po%d (%s).\n",
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// pi, pi_map.count(pi) ? pi_map.at(pi).c_str() : "???",
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// po, po_map.count(po) ? po_map.at(po).c_str() : "???");
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// return;
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//}
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for (char ch : line)
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next_char(ch);
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}
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};
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void abc9_module(RTLIL::Design *design, std::string script_file, std::string exe_file,
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vector<int> lut_costs, bool dff_mode, std::string delay_target, std::string /*lutin_shared*/, bool fast_mode,
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bool show_tempdir, std::string box_file, std::string lut_file,
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std::string wire_delay, std::string tempdir_name
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)
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{
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std::string abc9_script;
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if (!lut_costs.empty())
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abc9_script += stringf("read_lut %s/lutdefs.txt; ", tempdir_name.c_str());
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else if (!lut_file.empty())
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abc9_script += stringf("read_lut \"%s\"; ", lut_file.c_str());
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else
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log_abort();
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log_assert(!box_file.empty());
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abc9_script += stringf("read_box \"%s\"; ", box_file.c_str());
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abc9_script += stringf("&read %s/input.xaig; &ps; ", tempdir_name.c_str());
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if (!script_file.empty()) {
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if (script_file[0] == '+') {
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for (size_t i = 1; i < script_file.size(); i++)
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if (script_file[i] == '\'')
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abc9_script += "'\\''";
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else if (script_file[i] == ',')
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abc9_script += " ";
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else
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abc9_script += script_file[i];
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} else
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abc9_script += stringf("source %s", script_file.c_str());
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} else if (!lut_costs.empty() || !lut_file.empty()) {
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abc9_script += fast_mode ? RTLIL::constpad.at("abc9.script.default.fast").substr(1,std::string::npos)
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: RTLIL::constpad.at("abc9.script.default").substr(1,std::string::npos);
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} else
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log_abort();
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for (size_t pos = abc9_script.find("{D}"); pos != std::string::npos; pos = abc9_script.find("{D}", pos))
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abc9_script = abc9_script.substr(0, pos) + delay_target + abc9_script.substr(pos+3);
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//for (size_t pos = abc9_script.find("{S}"); pos != std::string::npos; pos = abc9_script.find("{S}", pos))
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// abc9_script = abc9_script.substr(0, pos) + lutin_shared + abc9_script.substr(pos+3);
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for (size_t pos = abc9_script.find("{W}"); pos != std::string::npos; pos = abc9_script.find("{W}", pos))
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abc9_script = abc9_script.substr(0, pos) + wire_delay + abc9_script.substr(pos+3);
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std::string C;
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if (design->scratchpad.count("abc9.if.C"))
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C = "-C " + design->scratchpad_get_string("abc9.if.C");
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for (size_t pos = abc9_script.find("{C}"); pos != std::string::npos; pos = abc9_script.find("{C}", pos))
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abc9_script = abc9_script.substr(0, pos) + C + abc9_script.substr(pos+3);
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std::string R;
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if (design->scratchpad.count("abc9.if.R"))
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R = "-R " + design->scratchpad_get_string("abc9.if.R");
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for (size_t pos = abc9_script.find("{R}"); pos != std::string::npos; pos = abc9_script.find("{R}", pos))
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abc9_script = abc9_script.substr(0, pos) + R + abc9_script.substr(pos+3);
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if (design->scratchpad_get_bool("abc9.nomfs"))
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for (size_t pos = abc9_script.find("&mfs"); pos != std::string::npos; pos = abc9_script.find("&mfs", pos))
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abc9_script = abc9_script.erase(pos, strlen("&mfs"));
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else {
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auto s = stringf("&write -n %s/output.aig; ", tempdir_name.c_str());
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for (size_t pos = abc9_script.find("&mfs"); pos != std::string::npos; pos = abc9_script.find("&mfs", pos)) {
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abc9_script = abc9_script.insert(pos, s);
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pos += GetSize(s) + strlen("&mfs");
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}
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}
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abc9_script += stringf("; &ps -l; &write -n %s/output.aig", tempdir_name.c_str());
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if (design->scratchpad_get_bool("abc9.verify")) {
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if (dff_mode)
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abc9_script += "; &verify -s";
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else
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abc9_script += "; &verify";
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}
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abc9_script += "; time";
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abc9_script = add_echos_to_abc9_cmd(abc9_script);
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for (size_t i = 0; i+1 < abc9_script.size(); i++)
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if (abc9_script[i] == ';' && abc9_script[i+1] == ' ')
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abc9_script[i+1] = '\n';
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FILE *f = fopen(stringf("%s/abc.script", tempdir_name.c_str()).c_str(), "wt");
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fprintf(f, "%s\n", abc9_script.c_str());
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fclose(f);
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std::string buffer;
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log_header(design, "Executing ABC9.\n");
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if (!lut_costs.empty()) {
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buffer = stringf("%s/lutdefs.txt", tempdir_name.c_str());
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f = fopen(buffer.c_str(), "wt");
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if (f == NULL)
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log_error("Opening %s for writing failed: %s\n", buffer.c_str(), strerror(errno));
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for (int i = 0; i < GetSize(lut_costs); i++)
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fprintf(f, "%d %d.00 1.00\n", i+1, lut_costs.at(i));
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fclose(f);
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}
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buffer = stringf("\"%s\" -s -f %s/abc.script 2>&1", exe_file.c_str(), tempdir_name.c_str());
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log("Running ABC command: %s\n", replace_tempdir(buffer, tempdir_name, show_tempdir).c_str());
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#ifndef YOSYS_LINK_ABC
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abc9_output_filter filt(tempdir_name, show_tempdir);
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int ret = run_command(buffer, std::bind(&abc9_output_filter::next_line, filt, std::placeholders::_1));
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#else
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// These needs to be mutable, supposedly due to getopt
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char *abc9_argv[5];
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string tmp_script_name = stringf("%s/abc.script", tempdir_name.c_str());
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abc9_argv[0] = strdup(exe_file.c_str());
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abc9_argv[1] = strdup("-s");
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abc9_argv[2] = strdup("-f");
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abc9_argv[3] = strdup(tmp_script_name.c_str());
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abc9_argv[4] = 0;
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int ret = abc::Abc_RealMain(4, abc9_argv);
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free(abc9_argv[0]);
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free(abc9_argv[1]);
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free(abc9_argv[2]);
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free(abc9_argv[3]);
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#endif
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if (ret != 0) {
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if (check_file_exists(stringf("%s/output.aig", tempdir_name.c_str())))
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log_warning("ABC: execution of command \"%s\" failed: return code %d.\n", buffer.c_str(), ret);
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else
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log_error("ABC: execution of command \"%s\" failed: return code %d.\n", buffer.c_str(), ret);
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}
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}
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struct Abc9ExePass : public Pass {
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Abc9ExePass() : Pass("abc9_exe", "use ABC9 for technology mapping") { }
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void help() override
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{
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// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
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log("\n");
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log(" abc9_exe [options]\n");
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log("\n");
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log(" \n");
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log("This pass uses the ABC tool [1] for technology mapping of the top module\n");
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log("(according to the (* top *) attribute or if only one module is currently selected)\n");
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log("to a target FPGA architecture.\n");
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log("\n");
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log(" -exe <command>\n");
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#ifdef ABCEXTERNAL
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log(" use the specified command instead of \"" ABCEXTERNAL "\" to execute ABC.\n");
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#else
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log(" use the specified command instead of \"<yosys-bindir>/%syosys-abc\" to execute ABC.\n", proc_program_prefix().c_str());
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#endif
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log(" This can e.g. be used to call a specific version of ABC or a wrapper.\n");
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log("\n");
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log(" -script <file>\n");
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log(" use the specified ABC script file instead of the default script.\n");
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log("\n");
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log(" if <file> starts with a plus sign (+), then the rest of the filename\n");
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log(" string is interpreted as the command string to be passed to ABC. The\n");
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log(" leading plus sign is removed and all commas (,) in the string are\n");
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log(" replaced with blanks before the string is passed to ABC.\n");
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log("\n");
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log(" if no -script parameter is given, the following scripts are used:\n");
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log("%s\n", fold_abc9_cmd(RTLIL::constpad.at("abc9.script.default").substr(1,std::string::npos)).c_str());
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log("\n");
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log(" -fast\n");
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log(" use different default scripts that are slightly faster (at the cost\n");
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log(" of output quality):\n");
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log("%s\n", fold_abc9_cmd(RTLIL::constpad.at("abc9.script.default.fast").substr(1,std::string::npos)).c_str());
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log("\n");
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log(" -D <picoseconds>\n");
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log(" set delay target. the string {D} in the default scripts above is\n");
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log(" replaced by this option when used, and an empty string otherwise\n");
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log(" (indicating best possible delay).\n");
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log("\n");
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// log(" -S <num>\n");
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// log(" maximum number of LUT inputs shared.\n");
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// log(" (replaces {S} in the default scripts above, default: -S 1)\n");
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// log("\n");
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log(" -lut <width>\n");
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log(" generate netlist using luts of (max) the specified width.\n");
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log("\n");
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log(" -lut <w1>:<w2>\n");
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log(" generate netlist using luts of (max) the specified width <w2>. All\n");
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log(" luts with width <= <w1> have constant cost. for luts larger than <w1>\n");
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log(" the area cost doubles with each additional input bit. the delay cost\n");
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log(" is still constant for all lut widths.\n");
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log("\n");
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log(" -lut <file>\n");
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log(" pass this file with lut library to ABC.\n");
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log("\n");
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log(" -luts <cost1>,<cost2>,<cost3>,<sizeN>:<cost4-N>,..\n");
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log(" generate netlist using luts. Use the specified costs for luts with 1,\n");
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log(" 2, 3, .. inputs.\n");
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log("\n");
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log(" -showtmp\n");
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log(" print the temp dir name in log. usually this is suppressed so that the\n");
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log(" command output is identical across runs.\n");
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log("\n");
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log(" -box <file>\n");
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log(" pass this file with box library to ABC.\n");
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log("\n");
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log(" -cwd <dir>\n");
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log(" use this as the current working directory, inside which the 'input.xaig'\n");
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log(" file is expected. temporary files will be created in this directory, and\n");
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log(" the mapped result will be written to 'output.aig'.\n");
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log("\n");
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log("Note that this is a logic optimization pass within Yosys that is calling ABC\n");
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log("internally. This is not going to \"run ABC on your design\". It will instead run\n");
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log("ABC on logic snippets extracted from your design. You will not get any useful\n");
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log("output when passing an ABC script that writes a file. Instead write your full\n");
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log("design as BLIF file with write_blif and then load that into ABC externally if\n");
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log("you want to use ABC to convert your design into another format.\n");
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log("\n");
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log("[1] http://www.eecs.berkeley.edu/~alanmi/abc/\n");
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log("\n");
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}
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void execute(std::vector<std::string> args, RTLIL::Design *design) override
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{
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log_header(design, "Executing ABC9_EXE pass (technology mapping using ABC9).\n");
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std::string exe_file = yosys_abc_executable;
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std::string script_file, clk_str, box_file, lut_file;
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std::string delay_target, lutin_shared = "-S 1", wire_delay;
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std::string tempdir_name;
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bool fast_mode = false, dff_mode = false;
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bool show_tempdir = false;
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vector<int> lut_costs;
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#if 0
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cleanup = false;
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show_tempdir = true;
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#endif
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std::string lut_arg, luts_arg;
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exe_file = design->scratchpad_get_string("abc9.exe", exe_file /* inherit default value if not set */);
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script_file = design->scratchpad_get_string("abc9.script", script_file);
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if (design->scratchpad.count("abc9.D")) {
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delay_target = "-D " + design->scratchpad_get_string("abc9.D");
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}
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lut_arg = design->scratchpad_get_string("abc9.lut", lut_arg);
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luts_arg = design->scratchpad_get_string("abc9.luts", luts_arg);
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fast_mode = design->scratchpad_get_bool("abc9.fast", fast_mode);
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dff_mode = design->scratchpad_get_bool("abc9.dff", dff_mode);
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show_tempdir = design->scratchpad_get_bool("abc9.showtmp", show_tempdir);
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box_file = design->scratchpad_get_string("abc9.box", box_file);
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if (design->scratchpad.count("abc9.W")) {
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wire_delay = "-W " + design->scratchpad_get_string("abc9.W");
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}
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size_t argidx;
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#if defined(__wasm)
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const char *pwd = ".";
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#else
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char pwd [PATH_MAX];
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if (!getcwd(pwd, sizeof(pwd))) {
|
|
log_cmd_error("getcwd failed: %s\n", strerror(errno));
|
|
log_abort();
|
|
}
|
|
#endif
|
|
for (argidx = 1; argidx < args.size(); argidx++) {
|
|
std::string arg = args[argidx];
|
|
if (arg == "-exe" && argidx+1 < args.size()) {
|
|
exe_file = args[++argidx];
|
|
continue;
|
|
}
|
|
if (arg == "-script" && argidx+1 < args.size()) {
|
|
script_file = args[++argidx];
|
|
continue;
|
|
}
|
|
if (arg == "-D" && argidx+1 < args.size()) {
|
|
delay_target = "-D " + args[++argidx];
|
|
continue;
|
|
}
|
|
//if (arg == "-S" && argidx+1 < args.size()) {
|
|
// lutin_shared = "-S " + args[++argidx];
|
|
// continue;
|
|
//}
|
|
if (arg == "-lut" && argidx+1 < args.size()) {
|
|
lut_arg = args[++argidx];
|
|
continue;
|
|
}
|
|
if (arg == "-luts" && argidx+1 < args.size()) {
|
|
lut_arg = args[++argidx];
|
|
continue;
|
|
}
|
|
if (arg == "-fast") {
|
|
fast_mode = true;
|
|
continue;
|
|
}
|
|
if (arg == "-dff") {
|
|
dff_mode = true;
|
|
continue;
|
|
}
|
|
if (arg == "-showtmp") {
|
|
show_tempdir = true;
|
|
continue;
|
|
}
|
|
if (arg == "-box" && argidx+1 < args.size()) {
|
|
box_file = args[++argidx];
|
|
continue;
|
|
}
|
|
if (arg == "-W" && argidx+1 < args.size()) {
|
|
wire_delay = "-W " + args[++argidx];
|
|
continue;
|
|
}
|
|
if (arg == "-cwd" && argidx+1 < args.size()) {
|
|
tempdir_name = args[++argidx];
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
extra_args(args, argidx, design);
|
|
|
|
rewrite_filename(script_file);
|
|
if (!script_file.empty() && !is_absolute_path(script_file) && script_file[0] != '+')
|
|
script_file = std::string(pwd) + "/" + script_file;
|
|
|
|
// handle -lut / -luts args
|
|
if (!lut_arg.empty()) {
|
|
string arg = lut_arg;
|
|
if (arg.find_first_not_of("0123456789:,") == std::string::npos) {
|
|
size_t pos = arg.find_first_of(':');
|
|
int lut_mode = 0, lut_mode2 = 0;
|
|
if (pos != string::npos) {
|
|
lut_mode = atoi(arg.substr(0, pos).c_str());
|
|
lut_mode2 = atoi(arg.substr(pos+1).c_str());
|
|
} else {
|
|
lut_mode = atoi(arg.c_str());
|
|
lut_mode2 = lut_mode;
|
|
}
|
|
lut_costs.clear();
|
|
for (int i = 0; i < lut_mode; i++)
|
|
lut_costs.push_back(1);
|
|
for (int i = lut_mode; i < lut_mode2; i++)
|
|
lut_costs.push_back(2 << (i - lut_mode));
|
|
}
|
|
else {
|
|
lut_file = arg;
|
|
rewrite_filename(lut_file);
|
|
if (!lut_file.empty() && !is_absolute_path(lut_file) && lut_file[0] != '+')
|
|
lut_file = std::string(pwd) + "/" + lut_file;
|
|
}
|
|
}
|
|
if (!luts_arg.empty()) {
|
|
lut_costs.clear();
|
|
for (auto &tok : split_tokens(luts_arg, ",")) {
|
|
auto parts = split_tokens(tok, ":");
|
|
if (GetSize(parts) == 0 && !lut_costs.empty())
|
|
lut_costs.push_back(lut_costs.back());
|
|
else if (GetSize(parts) == 1)
|
|
lut_costs.push_back(atoi(parts.at(0).c_str()));
|
|
else if (GetSize(parts) == 2)
|
|
while (GetSize(lut_costs) < atoi(parts.at(0).c_str()))
|
|
lut_costs.push_back(atoi(parts.at(1).c_str()));
|
|
else
|
|
log_cmd_error("Invalid -luts syntax.\n");
|
|
}
|
|
}
|
|
|
|
if (box_file.empty())
|
|
log_cmd_error("abc9_exe '-box' option is mandatory.\n");
|
|
|
|
rewrite_filename(box_file);
|
|
if (!box_file.empty() && !is_absolute_path(box_file) && box_file[0] != '+')
|
|
box_file = std::string(pwd) + "/" + box_file;
|
|
|
|
if (tempdir_name.empty())
|
|
log_cmd_error("abc9_exe '-cwd' option is mandatory.\n");
|
|
|
|
|
|
abc9_module(design, script_file, exe_file, lut_costs, dff_mode,
|
|
delay_target, lutin_shared, fast_mode, show_tempdir,
|
|
box_file, lut_file, wire_delay, tempdir_name);
|
|
}
|
|
} Abc9ExePass;
|
|
|
|
PRIVATE_NAMESPACE_END
|