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authorAhmed Irfan <ahmedirfan1983@gmail.com>2014-01-03 10:52:44 +0100
committerAhmed Irfan <ahmedirfan1983@gmail.com>2014-01-03 10:52:44 +0100
commitffd768ce865e330a631c56d63c6f472e9ad85511 (patch)
treefa04e846e43b66039b31a738fc6375c16c598046 /backends/btor
parent09bd82db217d27930d1eeec8d0dfd1e014c675b4 (diff)
btor
Diffstat (limited to 'backends/btor')
-rw-r--r--backends/btor/Makefile.inc3
-rw-r--r--backends/btor/btor.cc771
2 files changed, 774 insertions, 0 deletions
diff --git a/backends/btor/Makefile.inc b/backends/btor/Makefile.inc
new file mode 100644
index 00000000..af7ab14d
--- /dev/null
+++ b/backends/btor/Makefile.inc
@@ -0,0 +1,3 @@
+
+OBJS += backends/btor/btor.o
+
diff --git a/backends/btor/btor.cc b/backends/btor/btor.cc
new file mode 100644
index 00000000..6ffb4730
--- /dev/null
+++ b/backends/btor/btor.cc
@@ -0,0 +1,771 @@
+/*
+ * yosys -- Yosys Open SYnthesis Suite
+ *
+ * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
+ * Copyright (C) 2013 Ahmed Irfan <ahmedirfan1983@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+// [[CITE]] BTOR: Bit-Precise Modelling of Word-Level Problems for Model Checking
+// Johannes Kepler University, Linz, Austria
+// http://fmv.jku.at/papers/BrummayerBiereLonsing-BPR08.pdf
+
+#include "kernel/rtlil.h"
+#include "kernel/register.h"
+#include "kernel/sigtools.h"
+#include "kernel/celltypes.h"
+#include "kernel/log.h"
+#include <string>
+#include <queue>
+#include <assert.h>
+#include <math.h>
+
+struct BtorDumperConfig
+{
+ bool subckt_mode;
+ bool conn_mode;
+ bool impltf_mode;
+
+ std::string buf_type, buf_in, buf_out;
+ std::string true_type, true_out, false_type, false_out;
+
+ BtorDumperConfig() : subckt_mode(false), conn_mode(false), impltf_mode(false) { }
+};
+
+struct BtorDumper
+{
+ FILE *f;
+ RTLIL::Module *module;
+ RTLIL::Design *design;
+ BtorDumperConfig *config;
+ CellTypes ct;
+
+ std::map<RTLIL::IdString, std::vector<RTLIL::IdString>> inter_wire_map;//<wire, dependency list> for maping the intermediate wires that are output of some cell
+ std::map<RTLIL::IdString, int> line_ref;//mapping of ids to line_num of the btor file
+ int line_num;//last line number of btor file
+ std::string str;//temp string
+ std::queue<RTLIL::SigSig> conn_list;
+ std::map<RTLIL::IdString, bool> basic_wires;//input wires and wires with dff
+ RTLIL::IdString curr_cell;
+ std::map<std::string, std::string> cell_type_translation;
+ BtorDumper(FILE *f, RTLIL::Module *module, RTLIL::Design *design, BtorDumperConfig *config) :
+ f(f), module(module), design(design), config(config), ct(design)
+ {
+ line_num=0;
+ str.clear();
+ for(auto it=module->connections.begin(); it !=module->connections.end(); it++)
+ {
+ conn_list.push(*it);
+ }
+ for(auto it=module->wires.begin(); it!=module->wires.end(); it++)
+ {
+ if(it->second->port_input)
+ {
+ basic_wires[it->first]=true;
+ }
+ else
+ {
+ basic_wires[it->first]=false;
+ }
+ inter_wire_map[it->first].clear();
+ }
+ curr_cell.clear();
+ cell_type_translation = {
+ //unary
+ {"$not","not"},{"$neg","neg"},{"$reduce_and","redand"},
+ {"$reduce_or","redor"},{"$reduce_xor","redxor"},{"$reduce_bool","redor"},
+ //binary
+ {"$and","and"},{"$or","or"},{"$xor","xor"},{"$xnor","xnor"},
+ {"$shr","srl"},{"$shl","sll"},{"$sshr","sra"},{"$sshl","sll"},
+ {"$lt","ult"},{"$le","ulte"},{"$eq","eq"},{"$ne","ne"},{"$gt","ugt"},{"$ge","ugte"},
+ {"$add","add"},{"$sub","sub"},{"$mul","mul"},{"$mod","urem"},{"$div","udiv"},
+ //mux
+ {"$mux","cond"},
+ //reg
+ {"$dff","next"},{"$adff","next"},{"$dffsr","next"}
+ //memories
+ };
+ }
+
+ std::vector<std::string> cstr_buf;
+
+ const char *cstr(const RTLIL::IdString id)
+ {
+ str = RTLIL::unescape_id(id);
+ for (size_t i = 0; i < str.size(); i++)
+ if (str[i] == '#' || str[i] == '=')
+ str[i] = '?';
+ cstr_buf.push_back(str);
+ return cstr_buf.back().c_str();
+ }
+
+ int dump_wire(const RTLIL::Wire* wire)
+ {
+ log("writing wire %s\n", cstr(wire->name));
+ if(basic_wires[wire->name])
+ {
+ auto it = line_ref.find(wire->name);
+ if(it==std::end(line_ref))
+ {
+ line_num++;
+ line_ref[wire->name]=line_num;
+ str = stringf("%d var %d %s", line_num, wire->width, cstr(wire->name));
+ fprintf(f, "%s\n", str.c_str());
+ return line_num;
+ }
+ else return it->second;
+ }
+ else // case when the wire is intermediate wire (auto generated)
+ {
+ log(" - case of intermediate wire - %s\n", cstr(wire->name));
+ auto it = line_ref.find(wire->name);
+ if(it==std::end(line_ref))
+ {
+ auto cell_it = inter_wire_map.find(wire->name);
+ if(cell_it !=std::end(inter_wire_map) && cell_it->second != curr_cell)
+ {
+ log(" -- found cell %s\n", cstr(cell_it->second));
+ RTLIL::Cell *cell = module->cells.at(cell_it->second);
+ int l = dump_cell(cell);
+ line_ref[wire->name] = l;
+ return l;
+ }
+ else
+ {
+ log(" -- checking connections\n");
+ for(unsigned i=0; i<conn_list.size(); i++)
+ {
+ log(" --- checking %d\n", i);
+ RTLIL::SigSig ss = conn_list.front();
+ conn_list.pop();
+ RTLIL::SigSpec *sig1 = &ss.first;
+ RTLIL::SigSpec *sig2 = &ss.second;
+ unsigned sig1_wires_count = sig1->chunks.size();
+ unsigned sig2_wires_count = sig2->chunks.size();
+ int start_bit=sig1->width-1;
+ for(unsigned j=0; j<sig1_wires_count; j++)
+ {
+ if(sig1->chunks[j].wire!=NULL && sig1->chunks[j].wire->name == wire->name && sig1->chunks[j].offset == 0)
+ {
+ log(" ---- found match sig1\n");
+ conn_list.push(ss);
+ if(sig1_wires_count == 1)
+ {
+ int l = dump_sigspec(sig2, sig2->width);
+ line_ref[wire->name] = l;
+ return l;
+ }
+ else
+ {
+ int l = dump_sigspec(sig2, sig2->width);
+ line_num++;
+ str = stringf("%d slice %d %d %d %d", line_num, wire->width, l, start_bit, start_bit-wire->width+1);
+ fprintf(f, "%s\n", str.c_str());
+ line_ref[wire->name]=line_num;
+ return line_num;
+ }
+ }
+ start_bit-=sig1->chunks[j].width;
+ }
+ start_bit=sig2->width-1;
+ for(unsigned j=0; j<sig2_wires_count; j++)
+ {
+ if(sig2->chunks[j].wire!=NULL && sig2->chunks[j].wire->name == wire->name && sig2->chunks[j].offset == 0)
+ {
+ log(" ---- found match sig2\n");
+ conn_list.push(ss);
+ if(sig2_wires_count == 1)
+ {
+ int l = dump_sigspec(sig1, sig1->width);
+ line_ref[wire->name] = l;
+ return l;
+ }
+ else
+ {
+ int l = dump_sigspec(sig1, sig1->width);
+ line_num++;
+ str = stringf("%d slice %d %d %d %d", line_num, wire->width, l, start_bit, start_bit-wire->width+1);
+ fprintf(f, "%s\n", str.c_str());
+ line_ref[wire->name]=line_num;
+ return line_num;
+ }
+ }
+ start_bit-=sig2->chunks[j].width;
+ }
+ conn_list.push(ss);
+ }
+ log(" --- nothing found\n");
+ return -1;
+ }
+ }
+ else
+ {
+ log(" -- already processed wire\n");
+ return it->second;
+ }
+ }
+ }
+
+ int dump_memory(const RTLIL::Memory* memory)
+ {
+ log("writing memory %s\n", cstr(memory->name));
+ auto it = line_ref.find(memory->name);
+ if(it==std::end(line_ref))
+ {
+ line_num++;
+ int address_bits = ceil(log(memory->size)/log(2));
+ str = stringf("%d array %d %d", line_num, memory->width, address_bits);
+ line_ref[memory->name]=line_num;
+ fprintf(f, "%s\n", str.c_str());
+ return line_num;
+ }
+ else return it->second;
+ }
+
+ int dump_const(const RTLIL::Const* data, int width, int offset)
+ {
+ log("writing const \n");
+ if((data->flags & RTLIL::CONST_FLAG_STRING) == 0)
+ {
+ if(width<0)
+ width = data->bits.size() - offset;
+
+ std::string data_str = data->as_string();
+ if(offset > 0)
+ data_str = data_str.substr(offset, width);
+
+ line_num++;
+ str = stringf("%d const %d %s", line_num, width, data_str.c_str());
+ fprintf(f, "%s\n", str.c_str());
+ return line_num;
+ }
+ else
+ log("writing const error\n");
+ return -1;
+ }
+
+ int dump_sigchunk(const RTLIL::SigChunk* chunk)
+ {
+ log("writing sigchunk\n");
+ int l=-1;
+ if(chunk->wire == NULL)
+ {
+ l=dump_const(&chunk->data, chunk->width, chunk->offset);
+ }
+ else
+ {
+ if (chunk->width == chunk->wire->width && chunk->offset == 0)
+ l = dump_wire(chunk->wire);
+ else
+ {
+ str = stringf("%s[%d:%d]", chunk->wire->name.c_str(),
+ chunk->offset + chunk->width - 1, chunk->offset);
+ auto it = line_ref.find(RTLIL::IdString(str));
+ if(it==std::end(line_ref))
+ {
+ int wire_line_num = dump_wire(chunk->wire);
+ if(wire_line_num<=0)
+ return -1;
+ line_num++;
+ line_ref[RTLIL::IdString(str)] = line_num;
+ str = stringf("%d slice %d %d %d %d", line_num, chunk->width,
+ wire_line_num, chunk->offset + chunk->width - 1, chunk->offset);
+ fprintf(f, "%s\n", str.c_str());
+ l = line_num;
+ }
+ else
+ l=it->second;
+ }
+ }
+ return l;
+ }
+
+ int dump_sigspec(const RTLIL::SigSpec* sig, int expected_width)
+ {
+ log("writing sigspec\n");
+ assert(sig->width<=expected_width);
+ int l = -1;
+ if (sig->chunks.size() == 1)
+ {
+ l = dump_sigchunk(&sig->chunks[0]);
+ }
+ else
+ {
+ int l1, l2, w1, w2;
+ l1 = dump_sigchunk(&sig->chunks[0]);
+ if(l1<=0)
+ return -1;
+ w1 = sig->chunks[0].width;
+ for (unsigned i=1; i < sig->chunks.size(); i++)
+ {
+ l2 = dump_sigchunk(&sig->chunks[i]);
+ if(l2<=0)
+ return -1;
+ w2 = sig->chunks[i].width;
+ line_num++;
+ str = stringf("%d concat %d %d %d", line_num, w1+w2, l2, l1);
+ fprintf(f, "%s\n", str.c_str());
+ l1=line_num;
+ w1+=w2;
+ }
+ l = line_num;
+ }
+ if(expected_width > sig->width)
+ {
+ line_num++;
+ str = stringf ("%d zero %d", line_num, expected_width - sig->width);
+ fprintf(f, "%s\n", str.c_str());
+ line_num++;
+ str = stringf ("%d concat %d %d %d", line_num, expected_width, line_num-1, l);
+ fprintf(f, "%s\n", str.c_str());
+ l = line_num;
+ }
+ return l;
+ }
+
+ int dump_cell(const RTLIL::Cell* cell)
+ {
+ auto it = line_ref.find(cell->name);
+ if(it==std::end(line_ref))
+ {
+ curr_cell = cell->name;
+ //unary cells
+ if(cell->type == "$not" || cell->type == "$neg" || cell->type == "$pos" || cell->type == "$reduce_and" ||
+ cell->type == "$reduce_or" || cell->type == "$reduce_xor" || cell->type == "$reduce_bool")
+ {
+ log("writing unary cell - %s\n", cstr(cell->type));
+ RTLIL::IdString output_id = cell->connections.at(RTLIL::IdString("\\Y")).chunks[0].wire->name;//output wire name
+ int w = cell->parameters.at(RTLIL::IdString("\\A_WIDTH")).as_int();
+ int output_width = cell->parameters.at(RTLIL::IdString("\\Y_WIDTH")).as_int();
+ assert((cell->type == "$not" || cell->type == "$neg") && w==output_width);
+ int l = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\A")), w);
+ if(cell->type == "$pos")
+ return l;
+ line_num++;
+ line_ref[output_id]=line_num;
+ line_ref[cell->name]=line_num;
+ str = stringf ("%d %s %d %d", line_num, cell_type_translation.at(cell->type).c_str(), output_width, l);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ else if(cell->type == "$reduce_xnor" || cell->type == "$logic_not")//no direct translation in btor
+ {
+ log("writing unary cell - %s\n", cstr(cell->type));
+ RTLIL::IdString output_id = cell->connections.at(RTLIL::IdString("\\Y")).chunks[0].wire->name;//output wire name
+ int w = cell->parameters.at(RTLIL::IdString("\\A_WIDTH")).as_int();
+ int output_width = cell->parameters.at(RTLIL::IdString("\\Y_WIDTH")).as_int();
+ int l = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\A")), w);
+ if(cell->type == "$logic_not")
+ {
+ line_num++;
+ str = stringf ("%d %s %d %d", line_num, cell_type_translation.at("$reduce_or").c_str(), output_width, l);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ else if(cell->type == "$reduce_xnor")
+ {
+ line_num++;
+ str = stringf ("%d %s %d %d", line_num, cell_type_translation.at("$reduce_xor").c_str(), output_width, l);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ line_ref[output_id]=line_num;
+ line_ref[cell->name]=line_num;
+ line_num++;
+ str = stringf ("%d %s %d %d", line_num, cell_type_translation.at("$not").c_str(), output_width, line_num-1);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ //binary cells
+ else if(cell->type == "$and" || cell->type == "$or" || cell->type == "$xor" || cell->type == "$xnor" ||
+ cell->type == "$add" || cell->type == "$sub" || cell->type == "$mul" || cell->type == "$div" ||
+ cell->type == "$mod" || cell->type == "$lt" || cell->type == "$le" || cell->type == "$eq" ||
+ cell->type == "$ne" || cell->type == "$ge" || cell->type == "$gt" ||
+ cell->type == "$shr" || cell->type == "$shl" || cell->type == "$sshr" || cell->type == "$sshl")
+ {
+ log("writing binary cell - %s\n", cstr(cell->type));
+ RTLIL::IdString output_id = cell->connections.at(RTLIL::IdString("\\Y")).chunks[0].wire->name;//output wire name
+ int output_width = cell->parameters.at(RTLIL::IdString("\\Y_WIDTH")).as_int();
+ int l1 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\A")), output_width);
+ int l2 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\B")), output_width);
+ line_num++;
+ line_ref[output_id]=line_num;
+ line_ref[cell->name]=line_num;
+ str = stringf ("%d %s %d %d %d",
+ line_num, cell_type_translation.at(cell->type).c_str(), output_width, l1, l2);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ else if(cell->type == "$logic_and" || cell->type == "$logic_or")//no direct translation in btor
+ {
+ log("writing binary cell - %s\n", cstr(cell->type));
+ RTLIL::IdString output_id = cell->connections.at(RTLIL::IdString("\\Y")).chunks[0].wire->name;//output wire name
+ int output_width = cell->parameters.at(RTLIL::IdString("\\Y_WIDTH")).as_int();
+ int l1 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\A")), output_width);
+ int l2 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\B")), output_width);
+ line_num++;
+ str = stringf ("%d %s %d %d", line_num, cell_type_translation.at("$reduce_or").c_str(), output_width, l1);
+ fprintf(f, "%s\n", str.c_str());
+ line_num++;
+ str = stringf ("%d %s %d %d", line_num, cell_type_translation.at("$reduce_or").c_str(), output_width, l2);
+ fprintf(f, "%s\n", str.c_str());
+ if(cell->type == "$logic_and")
+ {
+ line_num++;
+ str = stringf ("%d %s %d %d %d", line_num, cell_type_translation.at("$and").c_str(), output_width, line_num-2, line_num-1);
+ }
+ else if(cell->type == "$logic_or")
+ {
+ line_num++;
+ str = stringf ("%d %s %d %d %d", line_num, cell_type_translation.at("$or").c_str(), output_width, line_num-2, line_num-1);
+ }
+ line_ref[output_id]=line_num;
+ line_ref[cell->name]=line_num;
+ fprintf(f, "%s\n", str.c_str());
+ }
+ //multiplexers
+ else if(cell->type == "$mux")
+ {
+ log("writing mux cell\n");
+ RTLIL::IdString output_id = cell->connections.at(RTLIL::IdString("\\Y")).chunks[0].wire->name;//output wire name
+ int output_width = cell->parameters.at(RTLIL::IdString("\\WIDTH")).as_int();
+ int l1 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\A")), output_width);
+ int l2 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\B")), output_width);
+ int s = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\S")), 1);
+ line_num++;
+ line_ref[output_id]=line_num;
+ line_ref[cell->name]=line_num;
+ str = stringf ("%d %s %d %d %d %d",
+ line_num, cell_type_translation.at(cell->type).c_str(), output_width, s, l2, l1);//if s is 0 then l1, if s is 1 then l2 //according to the implementation of mux cell
+ fprintf(f, "%s\n", str.c_str());
+ }
+ //registers
+ else if(cell->type == "$dff" || cell->type == "$adff" || cell->type == "$dffsr")
+ {
+ log("writing cell - %s\n", cstr(cell->type));
+ int output_width = cell->parameters.at(RTLIL::IdString("\\WIDTH")).as_int();
+ int reg = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\Q")), output_width);//register
+ int cond = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\CLK")), 1);
+ bool polarity = cell->parameters.at(RTLIL::IdString("\\CLK_POLARITY")).as_bool();
+ int value = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\D")), output_width);
+ if(cell->type == "$dffsr")
+ {
+ int sync_reset = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\CLR")), 1);
+ bool sync_reset_pol = cell->parameters.at(RTLIL::IdString("\\CLR_POLARITY")).as_bool();
+ int sync_reset_value = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\SET")), output_width);
+ bool sync_reset_value_pol = cell->parameters.at(RTLIL::IdString("\\SET_POLARITY")).as_bool();
+ line_num++;
+ str = stringf ("%d %s %d %s%d %s%d %d", line_num, cell_type_translation.at("$mux").c_str(),
+ output_width, sync_reset_pol ? "":"-", sync_reset, sync_reset_value_pol? "":"-",
+ sync_reset_value, value);
+ fprintf(f, "%s\n", str.c_str());
+ value = line_num;
+ }
+ line_num++;
+ str = stringf ("%d %s %d %s%d %d %d", line_num, cell_type_translation.at("$mux").c_str(),
+ output_width, polarity?"":"-", cond, value, reg);
+
+ fprintf(f, "%s\n", str.c_str());
+ int next = line_num;
+ if(cell->type == "$adff")
+ {
+ int async_reset = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\ARST")), 1);
+ bool async_reset_pol = cell->parameters.at(RTLIL::IdString("\\ARST_POLARITY")).as_bool();
+ int async_reset_value = dump_const(&cell->parameters.at(RTLIL::IdString("\\ARST_VALUE")),
+ output_width, 0);
+ line_num++;
+ str = stringf ("%d %s %d %s%d %d %d", line_num, cell_type_translation.at("$mux").c_str(),
+ output_width, async_reset_pol ? "":"-", async_reset, async_reset_value, next);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ line_num++;
+ line_ref[cell->name]=line_num;
+ str = stringf ("%d %s %d %d %d",
+ line_num, cell_type_translation.at(cell->type).c_str(), output_width, reg, next);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ //memories
+ else if(cell->type == "$memrd")
+ {
+ log("writing memrd cell\n");
+ RTLIL::IdString output_id = cell->connections.at(RTLIL::IdString("\\DATA")).chunks[0].wire->name;//output wire
+ str = cell->parameters.at(RTLIL::IdString("\\MEMID")).decode_string();
+ int mem = dump_memory(module->memories.at(RTLIL::IdString(str.c_str())));
+ int address_width = cell->parameters.at(RTLIL::IdString("\\ABITS")).as_int();
+ int address = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\ADDR")), address_width);
+ int data_width = cell->parameters.at(RTLIL::IdString("\\WIDTH")).as_int();
+ line_num++;
+ str = stringf("%d read %d %d %d", line_num, data_width, mem, address);
+ fprintf(f, "%s\n", str.c_str());
+ line_ref[output_id]=line_num;
+ line_ref[cell->name]=line_num;
+ }
+ else if(cell->type == "$memwr")
+ {
+ log("writing memwr cell\n");
+ int clk = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\CLK")), 1);
+ bool polarity = cell->parameters.at(RTLIL::IdString("\\CLK_POLARITY")).as_bool();
+ int enable = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\EN")), 1);
+ int address_width = cell->parameters.at(RTLIL::IdString("\\ABITS")).as_int();
+ int address = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\ADDR")), address_width);
+ int data_width = cell->parameters.at(RTLIL::IdString("\\WIDTH")).as_int();
+ int data = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\DATA")), data_width);
+ str = cell->parameters.at(RTLIL::IdString("\\MEMID")).decode_string();
+ int mem = dump_memory(module->memories.at(RTLIL::IdString(str.c_str())));
+ line_num++;
+ if(polarity)
+ str = stringf("%d one 1", line_num);
+ else
+ str = stringf("%d zero 1", line_num);
+ fprintf(f, "%s\n", str.c_str());
+ line_num++;
+ str = stringf("%d eq 1 %d %d", line_num, clk, line_num-1);
+ fprintf(f, "%s\n", str.c_str());
+ line_num++;
+ str = stringf("%d and 1 %d %d", line_num, line_num-1, enable);
+ fprintf(f, "%s\n", str.c_str());
+ line_num++;
+ str = stringf("%d write %d %d %d %d %d", line_num, data_width, address_width, mem, address, data);
+ fprintf(f, "%s\n", str.c_str());
+ line_num++;
+ str = stringf("%d acond %d %d %d %d %d", line_num, data_width, address_width, line_num-2/*enable*/, line_num-1, mem);
+ fprintf(f, "%s\n", str.c_str());
+ line_num++;
+ str = stringf("%d anext %d %d %d %d", line_num, data_width, address_width, mem, line_num-1);
+ fprintf(f, "%s\n", str.c_str());
+ line_ref[cell->name]=line_num;
+ }
+ return line_num;
+ }
+ else
+ {
+ return it->second;
+ }
+ }
+
+ void dump()
+ {
+ fprintf(f, ";module %s\n", cstr(module->name));
+
+ log("creating intermediate wires map\n");
+ //creating map of intermediate wires as output of some cell
+ for (auto it = module->cells.begin(); it != module->cells.end(); it++)
+ {
+ RTLIL::Cell *cell = it->second;
+ log(" - %s\n", cstr(it->second->type));
+ if (cell->type == "$memrd")
+ {
+ RTLIL::SigSpec *ss = &cell->connections.at(RTLIL::IdString("\\DATA"));
+ for(int i=0; i<ss->chunks.size(); i++)
+ {
+ RTLIL::Wire *w = ss->chunks[i].wire;
+ RTLIL::IdString wire_id = w->name;
+ inter_wire_map[wire_id].push_back(cell->name);
+ }
+ }
+ else if(it->second->type == "$memwr")
+ {
+ /*RTLIL::IdString wire_id = it->second->connections.at(RTLIL::IdString("\\MEMID")).chunks[0].wire->name;
+ if(inter_wire_map.find(wire_id)==std::end(inter_wire_map))
+ inter_wire_map[wire_id] = it->second->name;*/
+ }
+ else if(cell->type == "$dff" || cell->type == "$adff" || cell->type == "$dffsr")
+ {
+ RTLIL::IdString wire_id = cell->connections.at(RTLIL::IdString("\\Q")).chunks[0].wire->name;
+ if(inter_wire_map.find(wire_id)==std::end(inter_wire_map))
+ {
+ inter_wire_map[wire_id] = it->second->name;
+ basic_wires[wire_id] = true;
+ }
+ }
+ else
+ {
+ RTLIL::SigSpec *ss = &cell->connections.at(RTLIL::IdString("\\Y"));
+ for(int i=0; i<ss->chunks.size(); i++)
+ {
+ RTLIL::Wire *w = ss->chunks[i].wire;
+ RTLIL::IdString wire_id = w->name;
+ inter_wire_map[wire_id].push_back(cell->name);
+ }
+ }
+ }
+
+ //removing duplicates
+ for(auto it = inter_wire_map.begin(); it != inter_wire_map.end(); it++)
+ {
+ it->sort();
+ unique(it->begin(), it->end());
+ }
+
+ log("writing input\n");
+ std::map<int, RTLIL::Wire*> inputs;
+
+ for (auto &wire_it : module->wires) {
+ RTLIL::Wire *wire = wire_it.second;
+ if (wire->port_input)
+ inputs[wire->port_id] = wire;
+ }
+
+ fprintf(f, ";inputs\n");
+ for (auto &it : inputs) {
+ RTLIL::Wire *wire = it.second;
+ for (int i = 0; i < wire->width; i++)
+ dump_wire(wire);
+ }
+ fprintf(f, "\n");
+
+ /*log("writing cells\n");
+ fprintf(f, ";cells\n");
+ for (auto it = module->cells.begin(); it != module->cells.end(); it++)
+ {
+ dump_cell(it->second);
+ }
+
+ log("writing connections\n");
+ fprintf(f, ";output connections\n");
+ for (auto it = module->connections.begin(); it != module->connections.end(); it++)
+ {
+ RTLIL::SigSpec *sig1 = &it->first;
+ RTLIL::SigSpec *sig2 = &it->second;
+ unsigned sig1_wires_count = sig1->chunks.size();
+ unsigned sig2_wires_count = sig2->chunks.size();
+ int start_bit=sig1->width-1;
+ for(unsigned j=0; j<sig1_wires_count; j++)
+ {
+ if(sig1->chunks[j].wire!=NULL && sig1->chunks[j].wire->port_output)
+ {
+ if(sig1_wires_count == 1)
+ {
+ int next = dump_sigspec(sig2, sig2->width);
+ int reg = dump_sigchunk(&sig1->chunks[j]);
+ if(reg!=next)
+ {
+ line_num++;
+ str = stringf("%d %s %d %d %d", line_num, cell_type_translation.at("$dff").c_str(),
+ sig1->chunks[j].width, reg, next);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ }
+ else
+ {
+ int l = dump_sigspec(sig2, sig2->width);
+ int reg = dump_sigchunk(&sig1->chunks[j]);
+ line_num++;
+ str = stringf("%d slice %d %d %d %d", line_num, sig1->chunks[j].width, l, start_bit,
+ start_bit-sig1->chunks[j].width+1);
+ fprintf(f, "%s\n", str.c_str());
+ line_num++;
+ str = stringf("%d %s %d %d %d", line_num, cell_type_translation.at("$dff").c_str(),
+ sig1->chunks[j].width, reg, line_num-1);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ }
+ start_bit-=sig1->chunks[j].width;
+ }
+ start_bit=sig2->width-1;
+ for(unsigned j=0; j<sig2_wires_count; j++)
+ {
+ if(sig2->chunks[j].wire!=NULL && sig2->chunks[j].wire->port_output)
+ {
+ if(sig2_wires_count == 1)
+ {
+ int next = dump_sigspec(sig1, sig1->width);
+ int reg = dump_sigchunk(&sig2->chunks[j]);
+ if(reg!=next)
+ {
+ line_num++;
+ str = stringf("%d %s %d %d %d", line_num, cell_type_translation.at("$dff").c_str(),
+ sig2->chunks[j].width, reg, next);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ }
+ else
+ {
+ int l = dump_sigspec(sig1, sig1->width);
+ int reg = dump_sigchunk(&sig2->chunks[j]);
+ line_num++;
+ str = stringf("%d slice %d %d %d %d", line_num, sig2->chunks[j].width, l, start_bit,
+ start_bit-sig2->chunks[j].width+1);
+ fprintf(f, "%s\n", str.c_str());
+ line_num++;
+ str = stringf("%d %s %d %d %d", line_num, cell_type_translation.at("$dff").c_str(),
+ sig2->chunks[j].width, reg, line_num-1);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ }
+ start_bit-=sig2->chunks[j].width;
+ }
+ }*/
+ }
+
+ static void dump(FILE *f, RTLIL::Module *module, RTLIL::Design *design, BtorDumperConfig &config)
+ {
+ BtorDumper dumper(f, module, design, &config);
+ dumper.dump();
+ }
+};
+
+struct BtorBackend : public Backend {
+ BtorBackend() : Backend("btor", "write design to BTOR file") { }
+
+ virtual void help()
+ {
+ // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
+ log("\n");
+ log(" write_btor [filename]\n");
+ log("\n");
+ log("Write the current design to an BTOR file.\n");
+ }
+
+ virtual void execute(FILE *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design)
+ {
+ std::string top_module_name;
+ std::string buf_type, buf_in, buf_out;
+ std::string true_type, true_out;
+ std::string false_type, false_out;
+ BtorDumperConfig config;
+
+ log_header("Executing BTOR backend.\n");
+
+ size_t argidx=1;
+ extra_args(f, filename, args, argidx);
+
+ if (top_module_name.empty())
+ for (auto & mod_it:design->modules)
+ if (mod_it.second->get_bool_attribute("\\top"))
+ top_module_name = mod_it.first;
+
+ fprintf(f, "; Generated by %s\n", yosys_version_str);
+
+ std::vector<RTLIL::Module*> mod_list;
+
+ for (auto module_it : design->modules)
+ {
+ RTLIL::Module *module = module_it.second;
+ if (module->get_bool_attribute("\\blackbox"))
+ continue;
+
+ if (module->name == RTLIL::escape_id(top_module_name)) {
+ BtorDumper::dump(f, module, design, config);
+ top_module_name.clear();
+ continue;
+ }
+
+ mod_list.push_back(module);
+ }
+
+ if (!top_module_name.empty())
+ log_error("Can't find top module `%s'!\n", top_module_name.c_str());
+
+ for (auto module : mod_list)
+ BtorDumper::dump(f, module, design, config);
+ }
+} BtorBackend;
+