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-rw-r--r--ghdl/ghdl.cc580
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diff --git a/ghdl/ghdl.cc b/ghdl/ghdl.cc
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@@ -1,580 +0,0 @@
-/*
- Copyright (C) 2016 Tristan Gingold <tgingold@free.fr>
-
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 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, see <https://www.gnu.org/licenses/>.
-
-*/
-
-#include "kernel/yosys.h"
-#include "kernel/sigtools.h"
-#include "kernel/log.h"
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-USING_YOSYS_NAMESPACE
-
-#ifdef YOSYS_ENABLE_GHDL
-
-#include "ghdlsynth.h"
-
-using namespace GhdlSynth;
-
-static std::string to_str(Sname name)
-{
- std::string res;
- bool is_sys = false;
-
- for (Sname pfx = name; is_valid(pfx); pfx = get_sname_prefix(pfx)) {
- switch (get_sname_kind(pfx)) {
- case Sname_Artificial:
- is_sys = true;
- // fallthrough
- case Sname_User:
- res = '.' + string(get_cstr(get_sname_suffix(pfx))) + res;
- break;
- case Sname_Version:
- res = '%' + stringf("%u", get_sname_version(pfx)) + res;
- break;
- }
- }
- res[0] = is_sys ? '$' : '\\';
- return res;
-}
-
-static RTLIL::SigSpec get_src(std::vector<RTLIL::Wire *> &net_map, Net n)
-{
- log_assert(n.id != 0);
-
- // Search if N is the output of a cell.
- Wire *res = n.id < net_map.size() ? net_map.at(n.id) : nullptr;
- if (res != nullptr)
- return res;
-
- Instance inst = get_net_parent(n);
- switch(get_id(inst)) {
-#define IN(N) get_src(net_map, get_input_net(inst, (N)))
- case Id_Signal:
- case Id_Isignal:
- case Id_Port:
- return IN(0);
- case Id_Uextend:
- {
- RTLIL::SigSpec res = IN(0);
- res.extend_u0(get_width(n), false);
- return res;
- }
- case Id_Utrunc:
- case Id_Strunc:
- {
- RTLIL::SigSpec res = IN(0);
- return res.extract(0, get_width(n));
- }
- case Id_Const_UB32:
- return SigSpec(get_param_uns32(inst, 0), get_width(n));
- case Id_Const_UL32:
- {
- std::vector<RTLIL::State> bits(get_width(n));
- unsigned int val01 = get_param_uns32(inst, 0);
- unsigned int valzx = get_param_uns32(inst, 1);
- for (unsigned int i = 0; i < get_width(n); i++) {
- switch(((val01 >> i)&1)+((valzx >> i)&1)*2) {
- case 0:
- bits[i] = RTLIL::State::S0;
- break;
- case 1:
- bits[i] = RTLIL::State::S1;
- break;
- case 2:
- bits[i] = RTLIL::State::Sz;
- break;
- case 3:
- bits[i] = RTLIL::State::Sx;
- break;
- }
- }
- return RTLIL::SigSpec(RTLIL::Const(bits));
- }
- case Id_Extract:
- {
- RTLIL::SigSpec res = IN(0);
- return res.extract(get_param_uns32(inst, 0), get_width(n));
- }
- case Id_Insert:
- {
- int pos = get_param_uns32(inst, 0);
- RTLIL::SigSpec in0 = IN(0);
- int size0 = in0.size();
- RTLIL::SigSpec in1 = IN(1);
- int size1 = in1.size();
- RTLIL::SigSpec res;
-
- for (int i = 0; i < size0; i++) {
- res.append((i >= pos && i < pos + size1) ?
- in1[i - pos] : in0[i]);
- }
- return res;
- }
- case Id_Concat2:
- case Id_Concat3:
- case Id_Concat4:
- {
- RTLIL::SigSpec res;
- unsigned nbr_in = get_nbr_inputs(get_module(inst));
- // ConcatN means { I0; I1; .. IN}, but append() adds
- // bits to the MSB side.
- for (unsigned i = nbr_in; i > 0; i--)
- res.append(IN(i - 1));
- return res;
- }
- case Id_Concatn:
- {
- RTLIL::SigSpec res;
- unsigned nbr_in = get_param_uns32(inst, 0);
- // ConcatN means { I0; I1; .. IN}, but append() adds
- // bits to the MSB side.
- for (unsigned i = nbr_in; i > 0; i--)
- res.append(IN(i - 1));
- return res;
- }
- default:
- log_cmd_error("wire not found for %s\n", to_str(get_module_name(get_module(inst))).c_str());
- break;
- }
- return SigSpec();
-}
-
-static bool is_set(std::vector<RTLIL::Wire *> &net_map, Net n)
-{
- // If not in the map, then certainly not present.
- if (n.id >= net_map.size())
- return false;
-
- Wire *res = net_map[n.id];
- return (res != nullptr);
-}
-
-static void set_src(std::vector<RTLIL::Wire *> &net_map, Net n, Wire *wire)
-{
- if (n.id >= net_map.size())
- net_map.resize(n.id + 1, nullptr);
- log_assert(net_map[n.id] == nullptr);
- net_map[n.id] = wire;
-}
-
-static void import_module(RTLIL::Design *design, GhdlSynth::Module m)
-{
- std::string module_name = to_str(get_module_name(m));
-
- if (design->has(module_name)) {
- log_cmd_error("Re-definition of module `%s'.\n", module_name.c_str());
- return;
- }
-
- RTLIL::Module *module = new RTLIL::Module;
- module->name = module_name;
- design->add(module);
-
- log("Importing module %s.\n", RTLIL::id2cstr(module->name));
-
- // TODO: support submodules
- if (is_valid(get_first_sub_module(m))) {
- log_cmd_error("Unsupported: submodules in `%s'.\n", module_name.c_str());
- return;
- }
-
- Instance self_inst = get_self_instance (m);
- if (!is_valid(self_inst)) { // blackbox
- module->set_bool_attribute("\\blackbox");
-
- Port_Idx nbr_inputs = get_nbr_inputs(m);
- for (Port_Idx idx = 0; idx < nbr_inputs; idx++) {
- RTLIL::Wire *wire = module->addWire(
- to_str(get_input_name(m, idx)),
- get_input_width(m, idx));
- wire->port_input = true;
- }
- Port_Idx nbr_outputs = get_nbr_outputs(m);
- for (Port_Idx idx = 0; idx < nbr_outputs; idx++) {
- RTLIL::Wire *wire = module->addWire(
- to_str(get_output_name(m, idx)),
- get_output_width(m, idx));
- wire->port_output = true;
- }
- module->fixup_ports();
- return;
- }
-
- // Create input ports.
- // They correspond to ouputs of the self instance.
- std::vector<RTLIL::Wire *> net_map;
- Port_Idx nbr_inputs = get_nbr_inputs(m);
- for (Port_Idx idx = 0; idx < nbr_inputs; idx++) {
- Net port = get_output(self_inst, idx);
-
- RTLIL::Wire *wire = module->addWire(to_str(get_input_name(m, idx)));
- wire->port_id = idx + 1;
- wire->port_input = true;
- wire->width = get_width(port);
- set_src(net_map, port, wire);
- }
- // Create output ports
- Port_Idx nbr_outputs = get_nbr_outputs(m);
- for (Port_Idx idx = 0; idx < nbr_outputs; idx++) {
- Net output_out = get_input_net(self_inst, idx);
-
- // Create wire
- RTLIL::Wire *wire = module->addWire(to_str(get_output_name(m, idx)));
- wire->port_id = nbr_inputs + idx + 1;
- wire->port_output = true;
- wire->width = get_width(output_out);
- set_src(net_map, output_out, wire);
-
- if (0) {
- // If the driver for this output drives only this output,
- // reuse this wire.
- Instance output_inst = get_net_parent(output_out);
- log_assert(get_id(get_module(output_inst)) == Id_Output);
- Net output_drv = get_input_net(output_inst, 0);
- if (has_one_connection (output_drv))
- set_src(net_map, output_drv, wire);
- }
- }
-
- // Create wires for outputs of (real) cells.
- for (Instance inst = get_first_instance(m);
- is_valid(inst);
- inst = get_next_instance(inst)) {
- GhdlSynth::Module im = get_module(inst);
- Module_Id id = get_id(im);
- switch (id) {
- case Id_And:
- case Id_Or:
- case Id_Xor:
- case Id_Nand:
- case Id_Nor:
- case Id_Xnor:
- case Id_Add:
- case Id_Sub:
- case Id_Mux2:
- case Id_Mux4:
- case Id_Dff:
- case Id_Adff:
- case Id_Idff:
- case Id_Eq:
- case Id_Ne:
- case Id_Ult:
- case Id_Ule:
- case Id_Ugt:
- case Id_Uge:
- case Id_Slt:
- case Id_Sle:
- case Id_Sgt:
- case Id_Sge:
- case Id_Not:
- case Id_Red_Or:
- case Id_Red_And:
- case Id_Assert: // No output
- case Id_Assume: // No output
- case Id_User_None:
- for (Port_Idx idx = 0; idx < get_nbr_outputs(im); idx++) {
- Net o = get_output(inst, idx);
- // The wire may have been created for an output
- if (!is_set(net_map, o)) {
- RTLIL::Wire *wire =
- module->addWire(NEW_ID, get_width(o));
- set_src(net_map, o, wire);
- }
- }
- break;
- case Id_Signal:
- case Id_Isignal:
- case Id_Output:
- case Id_Port:
- case Id_Const_UB32:
- case Id_Const_UL32:
- case Id_Uextend:
- case Id_Utrunc:
- case Id_Strunc:
- case Id_Extract:
- case Id_Insert:
- case Id_Concat2:
- case Id_Concat3:
- case Id_Concat4:
- case Id_Concatn:
- // Skip: these won't create cells.
- break;
- case Id_Edge:
- // The cell is ignored.
- break;
- default:
- log_cmd_error("Unsupported(1): instance %s of %s.\n",
- to_str(get_instance_name(inst)).c_str(),
- to_str(get_module_name(get_module(inst))).c_str());
- return;
- }
- }
-
- // Create cells and connect.
- for (Instance inst = get_first_instance(m);
- is_valid(inst);
- inst = get_next_instance(inst)) {
- Module_Id id = get_id(inst);
- Sname iname = get_instance_name(inst);
- switch (id) {
-#define IN(N) get_src(net_map, get_input_net(inst, (N)))
-#define OUT(N) get_src(net_map, get_output(inst, (N)))
- case Id_And:
- module->addAnd(to_str(iname), IN(0), IN(1), OUT(0));
- break;
- case Id_Or:
- module->addOr(to_str(iname), IN(0), IN(1), OUT(0));
- break;
- case Id_Xor:
- module->addXor(to_str(iname), IN(0), IN(1), OUT(0));
- break;
- case Id_Nand:
- {
- SigSpec r = OUT(0);
- RTLIL::Wire *w = module->addWire(NEW_ID, r.size());
- module->addAnd(NEW_ID, IN(0), IN(1), w);
- module->addNot(to_str(iname), w, r);
- }
- break;
- case Id_Nor:
- {
- SigSpec r = OUT(0);
- RTLIL::Wire *w = module->addWire(NEW_ID, r.size());
- module->addOr(NEW_ID, IN(0), IN(1), w);
- module->addNot(to_str(iname), w, r);
- }
- break;
- case Id_Xnor:
- module->addXnor(to_str(iname), IN(0), IN(1), OUT(0));
- break;
- case Id_Add:
- module->addAdd(to_str(iname), IN(0), IN(1), OUT(0));
- break;
- case Id_Sub:
- module->addSub(to_str(iname), IN(0), IN(1), OUT(0));
- break;
- case Id_Not:
- module->addNot(to_str(iname), IN(0), OUT(0));
- break;
- case Id_Eq:
- module->addEq(to_str(iname), IN(0), IN(1), OUT(0));
- break;
- case Id_Ne:
- module->addNe(to_str(iname), IN(0), IN(1), OUT(0));
- break;
- case Id_Ult:
- module->addLt(to_str(iname), IN(0), IN(1), OUT(0));
- break;
- case Id_Ule:
- module->addLe(to_str(iname), IN(0), IN(1), OUT(0));
- break;
- case Id_Ugt:
- module->addGt(to_str(iname), IN(0), IN(1), OUT(0));
- break;
- case Id_Uge:
- module->addGe(to_str(iname), IN(0), IN(1), OUT(0));
- break;
- case Id_Slt:
- module->addLt(to_str(iname), IN(0), IN(1), OUT(0), true);
- break;
- case Id_Sle:
- module->addLe(to_str(iname), IN(0), IN(1), OUT(0), true);
- break;
- case Id_Sgt:
- module->addGt(to_str(iname), IN(0), IN(1), OUT(0), true);
- break;
- case Id_Sge:
- module->addGe(to_str(iname), IN(0), IN(1), OUT(0), true);
- break;
- case Id_Red_Or:
- module->addReduceOr(to_str(iname), IN(0), OUT(0));
- break;
- case Id_Red_And:
- module->addReduceAnd(to_str(iname), IN(0), OUT(0));
- break;
- case Id_Mux2:
- module->addMux(to_str(iname), IN(1), IN(2), IN(0), OUT(0));
- break;
- case Id_Dff:
- case Id_Idff:
- module->addDff(to_str(iname), IN(0), IN(1), OUT(0));
- // For idff, the initial value is set on the output
- // wire.
- if (id == Id_Idff) {
- net_map[get_output(inst, 0).id]->attributes["\\init"] = IN(2).as_const();
- }
- break;
- case Id_Adff:
- module->addAdff(to_str(iname), IN(0), IN(2), IN(1), OUT(0), IN(3).as_const());
- break;
- case Id_Mux4:
- {
- SigSpec Sel0 = IN(0).extract(0, 1);
- SigSpec Sel1 = IN(0).extract(1, 1);
- SigSpec in1 = IN(1);
- RTLIL::Wire *w0 = module->addWire(NEW_ID, in1.size());
- RTLIL::Wire *w1 = module->addWire(NEW_ID, in1.size());
- module->addMux(NEW_ID, in1, IN (2), Sel0, w0);
- module->addMux(NEW_ID, IN (3), IN (4), Sel0, w1);
- module->addMux(NEW_ID, w0, w1, Sel1, OUT (0));
- }
- break;
- case Id_User_None:
- {
- RTLIL::Cell *cell = module->addCell(
- to_str(iname),
- to_str(get_module_name(get_module(inst))));
- GhdlSynth::Module submod = get_module(inst);
- Port_Idx nbr_inputs = get_nbr_inputs(submod);
- for (Port_Idx idx = 0; idx < nbr_inputs; idx++) {
- cell->setPort(to_str(get_input_name(submod, idx)), IN(idx));
- }
- Port_Idx nbr_outputs = get_nbr_outputs(submod);
- for (Port_Idx idx = 0; idx < nbr_outputs; idx++) {
- cell->setPort(to_str(get_output_name(submod, idx)), OUT(idx));
- }
- break;
- }
- case Id_Signal:
- case Id_Isignal:
- {
- Net sig = get_input_net(inst, 0);
- if (is_set(net_map, sig)) {
- Wire *w = net_map.at(sig.id);
- if (w)
- module->rename(w, to_str(iname));
- }
- }
- break;
- case Id_Output:
- case Id_Port:
- module->connect(OUT (0), IN (0));
- break;
- case Id_Assert:
- module->addAssert(to_str(iname), IN(0), State::S1);
- break;
- case Id_Assume:
- module->addAssume(to_str(iname), IN(0), State::S1);
- break;
- case Id_Const_UB32:
- case Id_Const_UL32:
- case Id_Uextend:
- case Id_Utrunc:
- case Id_Strunc:
- case Id_Extract:
- case Id_Insert:
- case Id_Concat2:
- case Id_Concat3:
- case Id_Concat4:
- case Id_Edge:
- break;
-#undef IN
-#undef OUT
- default:
- log_cmd_error("Unsupported(2): instance %s of %s.\n",
- to_str(get_instance_name(inst)).c_str(),
- to_str(get_module_name(get_module(inst))).c_str());
- return;
- }
- }
-
- // Connect output drivers to output
- for (Port_Idx idx = 0; idx < nbr_outputs; idx++) {
- Net output_out = get_input_net(self_inst, idx);
- Instance output_inst = get_net_parent(output_out);
- log_assert(get_id(get_module(output_inst)) == Id_Output);
- Net output_drv = get_input_net(output_inst, 0);
- if (!has_one_connection (output_drv))
- module->connect(get_src(net_map, output_out), get_src(net_map, output_drv));
- }
-
- module->fixup_ports();
-}
-
-static void import_netlist(RTLIL::Design *design, GhdlSynth::Module top)
-{
- for (GhdlSynth::Module m = get_first_sub_module (top);
- is_valid(m);
- m = get_next_sub_module (m)) {
- if (get_id (m) < Id_User_None)
- continue;
- import_module(design, m);
- }
-}
-
-#endif /* YOSYS_ENABLE_GHDL */
-
-YOSYS_NAMESPACE_BEGIN
-
-struct GhdlPass : public Pass {
- GhdlPass() : Pass("ghdl", "load VHDL designs using GHDL") { }
- virtual void help()
- {
- // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
-#if 0
- log("\n");
- log(" ghdl -a [OPTIONS] <vhdl-file>..\n");
- log("\n");
- log("Analyze the specified VHDL files.\n");
- log("\n");
-#endif
- log("\n");
- log(" ghdl [FILES... -e] UNIT\n");
- log("\n");
- log("Elaborate the design and import to Yosys\n");
- log("\n");
- }
-#ifdef YOSYS_ENABLE_GHDL
- virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
- {
- static bool initialized;
- log_header(design, "Executing GHDL.\n");
-
- // Initialize the library.
- if (!initialized) {
- initialized = 1;
- libghdl_init ();
- ghdlsynth__init_for_ghdl_synth();
- }
-
- if (args.size() == 2 && args[1] == "--disp-config") {
- ghdlcomp__disp_config();
- }
- else {
- int cmd_argc = args.size() - 1;
- const char **cmd_argv = new const char *[cmd_argc];
- for (int i = 0; i < cmd_argc; i++)
- cmd_argv[i] = args[i + 1].c_str();
-
- GhdlSynth::Module top;
- top = ghdl_synth(cmd_argc, cmd_argv);
- if (!is_valid(top)) {
- log_cmd_error("vhdl import failed.\n");
- }
- import_netlist(design, top);
- }
- }
-#else /* YOSYS_ENABLE_GHDL */
- virtual void execute(std::vector<std::string>, RTLIL::Design *) {
- log_cmd_error("This version of Yosys is built without GHDL support.\n");
- }
-#endif
-} GhdlPass;
-
-YOSYS_NAMESPACE_END
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