From 661b5a993ebbe331c8d4085372622587e1712ab4 Mon Sep 17 00:00:00 2001
From: Ahmed Irfan <ahmedirfan1983@gmail.com>
Date: Tue, 14 Jan 2014 12:03:53 +0100
Subject: BTOR backend
---
backends/btor/btor.cc | 602 +++++++++++++++++++++++++++-----------------------
btor.ys | 11 +-
2 files changed, 334 insertions(+), 279 deletions(-)
diff --git a/backends/btor/btor.cc b/backends/btor/btor.cc
index 6ffb4730b..4190fc897 100644
--- a/backends/btor/btor.cc
+++ b/backends/btor/btor.cc
@@ -2,7 +2,7 @@
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
- * Copyright (C) 2013 Ahmed Irfan <ahmedirfan1983@gmail.com>
+ * Copyright (C) 2014 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
@@ -31,6 +31,7 @@
#include <queue>
#include <assert.h>
#include <math.h>
+#include <regex>
struct BtorDumperConfig
{
@@ -44,6 +45,22 @@ struct BtorDumperConfig
BtorDumperConfig() : subckt_mode(false), conn_mode(false), impltf_mode(false) { }
};
+struct WireInfo
+{
+ RTLIL::IdString cell_name;
+ RTLIL::SigChunk *chunk;
+
+ WireInfo(RTLIL::IdString c, RTLIL::SigChunk* ch) : cell_name(c), chunk(ch) { }
+};
+
+struct WireInfoOrder
+{
+ bool operator() (const WireInfo& x, const WireInfo& y)
+ {
+ return x.chunk < y.chunk;
+ }
+};
+
struct BtorDumper
{
FILE *f;
@@ -52,24 +69,21 @@ struct BtorDumper
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
+ SigMap sigmap;
+ std::map<RTLIL::IdString, std::set<WireInfo,WireInfoOrder>> 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
+ std::map<RTLIL::SigSpec, int> sig_ref;//mapping of sigspec to the 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;
+ std::string str;//temp string for writing file
+ std::map<RTLIL::IdString, bool> basic_wires;//input wires and registers
+ RTLIL::IdString curr_cell; //current cell being dumped
+ std::map<std::string, std::string> cell_type_translation, s_cell_type_translation; //RTLIL to BTOR translation
BtorDumper(FILE *f, RTLIL::Module *module, RTLIL::Design *design, BtorDumperConfig *config) :
- f(f), module(module), design(design), config(config), ct(design)
+ f(f), module(module), design(design), config(config), ct(design), sigmap(module)
{
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++)
+ for(auto it=module->wires.begin(); it!=module->wires.end(); ++it)
{
if(it->second->port_input)
{
@@ -97,6 +111,11 @@ struct BtorDumper
{"$dff","next"},{"$adff","next"},{"$dffsr","next"}
//memories
};
+ s_cell_type_translation = {
+ //binary
+ {"$modx","srem"},{"$mody","smod"},{"$div","sdiv"},
+ {"$lt","slt"},{"$le","slte"},{"$gt","sgt"},{"$ge","sgte"}
+ };
}
std::vector<std::string> cstr_buf;
@@ -104,22 +123,22 @@ struct BtorDumper
const char *cstr(const RTLIL::IdString id)
{
str = RTLIL::unescape_id(id);
- for (size_t i = 0; i < str.size(); i++)
+ 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)
+ int dump_wire(RTLIL::Wire* wire)
{
- log("writing wire %s\n", cstr(wire->name));
if(basic_wires[wire->name])
{
+ log("writing wire %s\n", cstr(wire->name));
auto it = line_ref.find(wire->name);
if(it==std::end(line_ref))
{
- line_num++;
+ ++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());
@@ -127,88 +146,65 @@ struct BtorDumper
}
else return it->second;
}
- else // case when the wire is intermediate wire (auto generated)
+ else // case when the wire is not basic wire
{
- log(" - case of intermediate wire - %s\n", cstr(wire->name));
+ log("case of non-basic 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)
+ std::set<WireInfo, WireInfoOrder>& dep_set = inter_wire_map.at(wire->name);
+ int wire_line = 0;
+ int wire_width = 0;
+ for(auto dep_set_it=dep_set.begin(); dep_set_it!=dep_set.end(); ++dep_set_it)
{
- 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++)
+ RTLIL::IdString cell_id = dep_set_it->cell_name;
+ if(cell_id == curr_cell)
+ break;
+ log(" -- found cell %s\n", cstr(cell_id));
+ RTLIL::Cell* cell = module->cells.at(cell_id);
+ RTLIL::SigSpec* cell_output = get_cell_output(cell);
+ int cell_line = dump_cell(cell);
+
+ if(dep_set.size()==1 && wire->width == cell_output->width)
+ {
+ wire_line = cell_line;
+ break;
+ }
+ else
{
- 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++)
+ int prev_wire_line=0; //previously dumped wire line
+ int start_bit=cell_output->width-1;
+ for(unsigned j=0; j<cell_output->chunks.size(); ++j)
{
- if(sig1->chunks[j].wire!=NULL && sig1->chunks[j].wire->name == wire->name && sig1->chunks[j].offset == 0)
+ if(cell_output->chunks[j].wire->name == wire->name)
{
- log(" ---- found match sig1\n");
- conn_list.push(ss);
- if(sig1_wires_count == 1)
+ prev_wire_line = wire_line;
+ wire_line = ++line_num;
+ str = stringf("%d slice %d %d %d %d", line_num, cell_output->chunks[j].width, cell_line,
+ start_bit, start_bit-cell_output->chunks[j].width+1);
+ fprintf(f, "%s\n", str.c_str());
+ wire_width += cell_output->chunks[j].width;
+ if(prev_wire_line!=0)
{
- 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);
+ ++line_num;
+ str = stringf("%d concat %d %d %d", line_num, wire_width, prev_wire_line, wire_line);
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;
+ wire_line = line_num;
}
- 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;
+ start_bit-=cell_output->chunks[j].width;
}
- conn_list.push(ss);
}
- log(" --- nothing found\n");
- return -1;
}
+ if(dep_set.size()==0)
+ {
+ log(" - checking sigmap\n");
+ RTLIL::SigSpec s = RTLIL::SigSpec(wire);
+ wire_line = dump_sigspec(&s, s.width);
+ line_ref[wire->name]=wire_line;
+ }
+ line_ref[wire->name]=wire_line;
+ return wire_line;
}
else
{
@@ -216,6 +212,8 @@ struct BtorDumper
return it->second;
}
}
+ assert(false);
+ return -1;
}
int dump_memory(const RTLIL::Memory* memory)
@@ -224,7 +222,7 @@ struct BtorDumper
auto it = line_ref.find(memory->name);
if(it==std::end(line_ref))
{
- line_num++;
+ ++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;
@@ -246,13 +244,14 @@ struct BtorDumper
if(offset > 0)
data_str = data_str.substr(offset, width);
- line_num++;
+ ++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");
+ assert(false);
return -1;
}
@@ -278,7 +277,7 @@ struct BtorDumper
int wire_line_num = dump_wire(chunk->wire);
if(wire_line_num<=0)
return -1;
- line_num++;
+ ++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);
@@ -295,43 +294,79 @@ struct BtorDumper
int dump_sigspec(const RTLIL::SigSpec* sig, int expected_width)
{
log("writing sigspec\n");
- assert(sig->width<=expected_width);
+ RTLIL::SigSpec s = sigmap(*sig);
int l = -1;
- if (sig->chunks.size() == 1)
+ auto it = sig_ref.find(s);
+ if(it == std::end(sig_ref))
{
- 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++)
+ if (s.chunks.size() == 1)
{
- 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 = dump_sigchunk(&s.chunks[0]);
+ }
+ else
+ {
+ int l1, l2, w1, w2;
+ l1 = dump_sigchunk(&s.chunks[0]);
+ assert(l1>0);
+ w1 = s.chunks[0].width;
+ for (unsigned i=1; i < s.chunks.size(); ++i)
+ {
+ l2 = dump_sigchunk(&s.chunks[i]);
+ assert(l2>0);
+ w2 = s.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;
}
- l = line_num;
+ sig_ref[s] = l;
}
- if(expected_width > sig->width)
+ else
{
- 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;
+ l = it->second;
+ }
+
+ if (expected_width != s.width)
+ {
+ log(" - changing width of sigspec\n");
+ //TODO: save the new signal in map
+ /*if(expected_width > s.width)
+ s.extend_u0(expected_width);
+ else if (expected_width < s.width)
+ s = s.extract(0, expected_width);
+
+ it = sig_ref.find(s);
+ if(it == std::end(sig_ref))
+ {*/
+ if(expected_width > s.width)
+ {
+ //TODO: case the signal is signed
+ ++line_num;
+ str = stringf ("%d zero %d", line_num, expected_width - s.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;
+ }
+ else if(expected_width < s.width)
+ {
+ ++line_num;
+ str = stringf ("%d slice %d %d %d %d", line_num, expected_width, l, s.width-1, expected_width);
+ fprintf(f, "%s\n", str.c_str());
+ l = line_num;
+ }
+ /*sig_ref[s] = l;
+ }
+ else
+ {
+ l = it->second;
+ }*/
}
+ assert(l>0);
return l;
}
@@ -346,43 +381,49 @@ struct BtorDumper
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 == "$neg") && w==output_width);
+ w = w>output_width ? w:output_width;
int l = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\A")), w);
- if(cell->type == "$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());
+ int cell_line = l;
+ if(cell->type != "$pos")
+ {
+ cell_line = ++line_num;
+ bool reduced = (cell->type == "$not" || cell->type == "$neg") ? false : true;
+ str = stringf ("%d %s %d %d", cell_line, cell_type_translation.at(cell->type).c_str(), reduced?output_width:w, l);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ if(output_width < w && (cell->type == "$not" || cell->type == "$neg" || cell->type == "$pos"))
+ {
+ ++line_num;
+ str = stringf ("%d slice %d %d %d %d", line_num, output_width, cell_line, output_width-1, 0);
+ fprintf(f, "%s\n", str.c_str());
+ cell_line = line_num;
+ }
+ line_ref[cell->name]=cell_line;
}
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 == "$logic_not")
+ if(cell->type == "$logic_not" && w > 1)
{
- line_num++;
+ ++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++;
+ ++line_num;
str = stringf ("%d %s %d %d", line_num, cell_type_translation.at("$reduce_xor").c_str(), output_width, l);
fprintf(f, "%s\n", str.c_str());
}
- line_ref[output_id]=line_num;
- line_ref[cell->name]=line_num;
- line_num++;
+ ++line_num;
str = stringf ("%d %s %d %d", line_num, cell_type_translation.at("$not").c_str(), output_width, line_num-1);
fprintf(f, "%s\n", str.c_str());
+ line_ref[cell->name]=line_num;
}
//binary cells
else if(cell->type == "$and" || cell->type == "$or" || cell->type == "$xor" || cell->type == "$xnor" ||
@@ -391,66 +432,101 @@ struct BtorDumper
cell->type == "$ne" || cell->type == "$ge" || cell->type == "$gt" ||
cell->type == "$shr" || cell->type == "$shl" || cell->type == "$sshr" || cell->type == "$sshl")
{
+ //TODO: division by zero case
log("writing binary cell - %s\n", cstr(cell->type));
- RTLIL::IdString output_id = cell->connections.at(RTLIL::IdString("\\Y")).chunks[0].wire->name;//output wire name
int output_width = cell->parameters.at(RTLIL::IdString("\\Y_WIDTH")).as_int();
- int l1 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\A")), output_width);
- int l2 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\B")), output_width);
- line_num++;
- line_ref[output_id]=line_num;
- line_ref[cell->name]=line_num;
+ bool l1_signed = cell->parameters.at(RTLIL::IdString("\\A_SIGNED")).as_bool();
+ bool l2_signed = cell->parameters.at(RTLIL::IdString("\\B_SIGNED")).as_bool();
+ int l1_width = cell->parameters.at(RTLIL::IdString("\\A_WIDTH")).as_int();
+ int l2_width = cell->parameters.at(RTLIL::IdString("\\B_WIDTH")).as_int();
+ if(cell->type == "$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")
+ {
+ l1_width = l1_width > output_width ? l1_width : output_width;
+ l1_width = l1_width > l2_width ? l1_width : l2_width;
+ l2_width = l2_width > l1_width ? l2_width : l1_width;
+ }
+ else if(cell->type == "$shr" || cell->type == "$shl" || cell->type == "$sshr" || cell->type == "$sshl")
+ {
+ assert(l2_width <= ceil(log(l1_width)/log(2)) );
+ l2_width = ceil(log(l1_width)/log(2));
+ }
+ int l1 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\A")), l1_width);
+ int l2 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\B")), l2_width);
+ ++line_num;
+ std::string op = cell_type_translation.at(cell->type);
+ if(cell->type == "$div" || cell->type == "$lt" || cell->type == "$le" ||
+ cell->type == "$eq" || cell->type == "$ne" || cell->type == "$ge" || cell->type == "$gt")
+ {
+ assert(l1_signed == l2_signed);
+ if(l1_signed)
+ op = s_cell_type_translation.at(cell->type);
+ }
+ if(cell->type == "$mod")
+ {
+ if(l1_signed)
+ op = s_cell_type_translation.at("$modx");
+ else if(l2_signed)
+ op = s_cell_type_translation.at("$mody");
+ }
str = stringf ("%d %s %d %d %d",
- line_num, cell_type_translation.at(cell->type).c_str(), output_width, l1, l2);
+ line_num, op.c_str(), output_width, l1, l2);
fprintf(f, "%s\n", str.c_str());
+ if(output_width < l1_width)
+ {
+ ++line_num;
+ str = stringf ("%d slice %d %d %d %d", line_num, output_width, line_num-1, output_width-1, 0);
+ fprintf(f, "%s\n", str.c_str());
+ }
+ line_ref[cell->name]=line_num;
}
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++;
+ ++line_num;
str = stringf ("%d %s %d %d", line_num, cell_type_translation.at("$reduce_or").c_str(), output_width, l1);
fprintf(f, "%s\n", str.c_str());
- line_num++;
+ ++line_num;
str = stringf ("%d %s %d %d", line_num, cell_type_translation.at("$reduce_or").c_str(), output_width, l2);
fprintf(f, "%s\n", str.c_str());
if(cell->type == "$logic_and")
{
- line_num++;
+ ++line_num;
str = stringf ("%d %s %d %d %d", line_num, cell_type_translation.at("$and").c_str(), output_width, line_num-2, line_num-1);
}
else if(cell->type == "$logic_or")
{
- line_num++;
+ ++line_num;
str = stringf ("%d %s %d %d %d", line_num, cell_type_translation.at("$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());
+ line_ref[cell->name]=line_num;
}
//multiplexers
else if(cell->type == "$mux")
{
log("writing mux cell\n");
- RTLIL::IdString output_id = cell->connections.at(RTLIL::IdString("\\Y")).chunks[0].wire->name;//output wire name
int output_width = cell->parameters.at(RTLIL::IdString("\\WIDTH")).as_int();
int l1 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\A")), output_width);
int l2 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\B")), output_width);
int s = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\S")), 1);
- line_num++;
- line_ref[output_id]=line_num;
- line_ref[cell->name]=line_num;
+ ++line_num;
str = stringf ("%d %s %d %d %d %d",
line_num, cell_type_translation.at(cell->type).c_str(), output_width, s, l2, l1);//if s is 0 then l1, if s is 1 then l2 //according to the implementation of mux cell
fprintf(f, "%s\n", str.c_str());
+ line_ref[cell->name]=line_num;
}
//registers
else if(cell->type == "$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();
+ log(" - width is %d\n", output_width);
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();
@@ -461,14 +537,14 @@ struct BtorDumper
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++;
+ ++line_num;
str = stringf ("%d %s %d %s%d %s%d %d", line_num, cell_type_translation.at("$mux").c_str(),
output_width, sync_reset_pol ? "":"-", sync_reset, sync_reset_value_pol? "":"-",
sync_reset_value, value);
fprintf(f, "%s\n", str.c_str());
value = line_num;
}
- line_num++;
+ ++line_num;
str = stringf ("%d %s %d %s%d %d %d", line_num, cell_type_translation.at("$mux").c_str(),
output_width, polarity?"":"-", cond, value, reg);
@@ -480,31 +556,29 @@ struct BtorDumper
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++;
+ ++line_num;
str = stringf ("%d %s %d %s%d %d %d", line_num, cell_type_translation.at("$mux").c_str(),
output_width, async_reset_pol ? "":"-", async_reset, async_reset_value, next);
fprintf(f, "%s\n", str.c_str());
}
- line_num++;
- line_ref[cell->name]=line_num;
+ ++line_num;
str = stringf ("%d %s %d %d %d",
line_num, cell_type_translation.at(cell->type).c_str(), output_width, reg, next);
fprintf(f, "%s\n", str.c_str());
+ line_ref[cell->name]=line_num;
}
//memories
else if(cell->type == "$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++;
+ ++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 == "$memwr")
@@ -519,29 +593,30 @@ struct BtorDumper
int data = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\DATA")), data_width);
str = cell->parameters.at(RTLIL::IdString("\\MEMID")).decode_string();
int mem = dump_memory(module->memories.at(RTLIL::IdString(str.c_str())));
- line_num++;
+ ++line_num;
if(polarity)
str = stringf("%d one 1", line_num);
else
str = stringf("%d zero 1", line_num);
fprintf(f, "%s\n", str.c_str());
- line_num++;
+ ++line_num;
str = stringf("%d eq 1 %d %d", line_num, clk, line_num-1);
fprintf(f, "%s\n", str.c_str());
- line_num++;
+ ++line_num;
str = stringf("%d and 1 %d %d", line_num, line_num-1, enable);
fprintf(f, "%s\n", str.c_str());
- line_num++;
+ ++line_num;
str = stringf("%d write %d %d %d %d %d", line_num, data_width, address_width, mem, address, data);
fprintf(f, "%s\n", str.c_str());
- line_num++;
+ ++line_num;
str = stringf("%d acond %d %d %d %d %d", line_num, data_width, address_width, line_num-2/*enable*/, line_num-1, mem);
fprintf(f, "%s\n", str.c_str());
- line_num++;
+ ++line_num;
str = stringf("%d anext %d %d %d %d", line_num, data_width, address_width, mem, line_num-1);
fprintf(f, "%s\n", str.c_str());
line_ref[cell->name]=line_num;
}
+ curr_cell.clear();
return line_num;
}
else
@@ -549,160 +624,136 @@ struct BtorDumper
return it->second;
}
}
-
+
+ RTLIL::SigSpec* get_cell_output(RTLIL::Cell* cell)
+ {
+ RTLIL::SigSpec *output_sig = nullptr;
+ if (cell->type == "$memrd")
+ {
+ output_sig = &cell->connections.at(RTLIL::IdString("\\DATA"));
+ }
+ else if(cell->type == "$memwr")
+ {
+ //no output
+ }
+ else if(cell->type == "$dff" || cell->type == "$adff" || cell->type == "$dffsr")
+ {
+ output_sig = &cell->connections.at(RTLIL::IdString("\\Q"));
+ }
+ else
+ {
+ output_sig = &cell->connections.at(RTLIL::IdString("\\Y"));
+ }
+ return output_sig;
+ }
+
+ void dump_property(RTLIL::Wire *wire)
+ {
+ int l = dump_wire(wire);
+ ++line_num;
+ str = stringf("%d root 1 %d", line_num, l);
+ fprintf(f, "%s\n", str.c_str());
+ }
+
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++)
+ for (auto it = module->cells.begin(); it != module->cells.end(); ++it)
{
RTLIL::Cell *cell = it->second;
+ RTLIL::SigSpec* output_sig = get_cell_output(cell);
+ if(output_sig==nullptr)
+ continue;
+ RTLIL::SigSpec s = sigmap(*output_sig);
+ output_sig = &s;
log(" - %s\n", cstr(it->second->type));
if (cell->type == "$memrd")
{
- RTLIL::SigSpec *ss = &cell->connections.at(RTLIL::IdString("\\DATA"));
- for(int i=0; i<ss->chunks.size(); i++)
+ for(unsigned i=0; i<output_sig->chunks.size(); ++i)
{
- RTLIL::Wire *w = ss->chunks[i].wire;
+ RTLIL::Wire *w = output_sig->chunks[i].wire;
RTLIL::IdString wire_id = w->name;
- inter_wire_map[wire_id].push_back(cell->name);
+ inter_wire_map[wire_id].insert(WireInfo(cell->name,&output_sig->chunks[i]));
}
}
- else if(it->second->type == "$memwr")
+ else if(cell->type == "$memwr")
{
- /*RTLIL::IdString wire_id = it->second->connections.at(RTLIL::IdString("\\MEMID")).chunks[0].wire->name;
- if(inter_wire_map.find(wire_id)==std::end(inter_wire_map))
- inter_wire_map[wire_id] = it->second->name;*/
+ continue;//nothing to do
}
else if(cell->type == "$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;
- }
+ RTLIL::IdString wire_id = output_sig->chunks[0].wire->name;
+ inter_wire_map[wire_id].insert(WireInfo(cell->name,&output_sig->chunks[0]));
+ basic_wires[wire_id] = true;
}
else
{
- RTLIL::SigSpec *ss = &cell->connections.at(RTLIL::IdString("\\Y"));
- for(int i=0; i<ss->chunks.size(); i++)
+ for(unsigned i=0; i<output_sig->chunks.size(); ++i)
{
- RTLIL::Wire *w = ss->chunks[i].wire;
+ RTLIL::Wire *w = output_sig->chunks[i].wire;
RTLIL::IdString wire_id = w->name;
- inter_wire_map[wire_id].push_back(cell->name);
+ inter_wire_map[wire_id].insert(WireInfo(cell->name,&output_sig->chunks[i]));
}
}
}
- //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;
+ std::map<int, RTLIL::Wire*> inputs, outputs;
+ std::vector<RTLIL::Wire*> safety;
+ std::regex safety_regex("(safety)(.*)");
for (auto &wire_it : module->wires) {
RTLIL::Wire *wire = wire_it.second;
if (wire->port_input)
inputs[wire->port_id] = wire;
+ if (wire->port_output) {
+ outputs[wire->port_id] = wire;
+ if (std::regex_match(cstr(wire->name), safety_regex ) )
+ safety.push_back(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);
+ 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++)
+
+ log("writing memories\n");
+ for(auto mem_it = module->memories.begin(); mem_it != module->memories.end(); ++mem_it)
{
- dump_cell(it->second);
+ dump_memory(mem_it->second);
}
- log("writing connections\n");
- fprintf(f, ";output connections\n");
- for (auto it = module->connections.begin(); it != module->connections.end(); it++)
+ log("writing output wires\n");
+ for (auto &it : outputs) {
+ RTLIL::Wire *wire = it.second;
+ dump_wire(wire);
+ }
+
+ log("writing cells\n");
+ for(auto cell_it = module->cells.begin(); cell_it != module->cells.end(); ++cell_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;
- }
- }*/
+ dump_cell(cell_it->second);
+ }
+
+ for(auto it: safety)
+ dump_property(it);
+
+ fprintf(f, "\n");
+
+ log("writing outputs info\n");
+ fprintf(f, ";outputs\n");
+ for (auto &it : outputs) {
+ RTLIL::Wire *wire = it.second;
+ int l = dump_wire(wire);
+ fprintf(f, ";%d %s", l, cstr(wire->name));
+ }
+ fprintf(f, "\n");
}
static void dump(FILE *f, RTLIL::Module *module, RTLIL::Design *design, BtorDumperConfig &config)
@@ -752,6 +803,9 @@ struct BtorBackend : public Backend {
if (module->get_bool_attribute("\\blackbox"))
continue;
+ if (module->processes.size() != 0)
+ log_error("Found unmapped processes in module %s: unmapped processes are not supported in BLIF backend!\n", RTLIL::id2cstr(module->name));
+
if (module->name == RTLIL::escape_id(top_module_name)) {
BtorDumper::dump(f, module, design, config);
top_module_name.clear();
diff --git a/btor.ys b/btor.ys
index 11833e2ac..5293ed63b 100644
--- a/btor.ys
+++ b/btor.ys
@@ -4,7 +4,8 @@
#################
#converting processes to cells
proc;
-opt;
+opt; opt_const -mux_undef; opt;
+rename -hide;;;
#converting pmux to mux
techmap -map techlibs/common/pmux2mux.v;
opt;
@@ -12,9 +13,9 @@ opt;
memory_dff;
opt;
#flatten design
-flatten;
-opt;
-#adding temporary wires for cell ports
-scatter;
+flatten;;;
+#cell output to be a single wire
+splitnets -driver;
+opt;;;
#writing btor
write_btor design.btor;
--
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