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Merge pull request #26 from ahmedirfan1983/btor 

Btor
This commit is contained in:
Clifford Wolf 2014-02-12 23:46:58 +01:00
parent 08caa631dd ac896c63e2
commit 6b210d2b6f
3 changed files with 61 additions and 34 deletions
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87
backends/btor/btor.cc
View File

@ -133,6 +133,10 @@ struct BtorDumper
cell_type_translation["$dffsr"] = "next";
//memories
//nothing here
//slice
cell_type_translation["$slice"] = "slice";
//concat
cell_type_translation["$concat"] = "concat";
//signed cell type translation
//binary
@ -350,39 +354,25 @@ struct BtorDumper
if (expected_width != s.width)
{
log(" - changing width of sigspec\n");
//TODO: save the new signal in map
/*if(expected_width > s.width)
s.extend_u0(expected_width);
else if (expected_width < s.width)
s = s.extract(0, expected_width);
it = sig_ref.find(s);
if(it == std::end(sig_ref))
{*/
if(expected_width > s.width)
{
//TODO: case the signal is signed
++line_num;
str = stringf ("%d zero %d", line_num, expected_width - s.width);
fprintf(f, "%s\n", str.c_str());
++line_num;
str = stringf ("%d concat %d %d %d", line_num, expected_width, line_num-1, l);
fprintf(f, "%s\n", str.c_str());
l = line_num;
}
else if(expected_width < s.width)
{
++line_num;
str = stringf ("%d slice %d %d %d %d;3", line_num, expected_width, l, expected_width-1, 0);
fprintf(f, "%s\n", str.c_str());
l = line_num;
}
/*sig_ref[s] = l;
}
else
//TODO: this block may not be needed anymore, due to explicit type conversion by "splice" command
if(expected_width > s.width)
{
l = it->second;
}*/
//TODO: case the signal is signed
++line_num;
str = stringf ("%d zero %d", line_num, expected_width - s.width);
fprintf(f, "%s\n", str.c_str());
++line_num;
str = stringf ("%d concat %d %d %d", line_num, expected_width, line_num-1, l);
fprintf(f, "%s\n", str.c_str());
l = line_num;
}
else if(expected_width < s.width)
{
++line_num;
str = stringf ("%d slice %d %d %d %d;3", line_num, expected_width, l, expected_width-1, 0);
fprintf(f, "%s\n", str.c_str());
l = line_num;
}
}
assert(l>0);
return l;
@ -765,6 +755,39 @@ struct BtorDumper
fprintf(f, "%s\n", str.c_str());
line_ref[cell->name]=line_num;
}
else if(cell->type == "$slice")
{
log("writing slice cell\n");
const RTLIL::SigSpec* input = &cell->connections.at(RTLIL::IdString("\\A"));
int input_width = cell->parameters.at(RTLIL::IdString("\\A_WIDTH")).as_int();
assert(input->width == input_width);
int input_line = dump_sigspec(input, input_width);
const RTLIL::SigSpec* output = &cell->connections.at(RTLIL::IdString("\\Y"));
int output_width = cell->parameters.at(RTLIL::IdString("\\Y_WIDTH")).as_int();
assert(output->width == output_width);
int offset = cell->parameters.at(RTLIL::IdString("\\OFFSET")).as_int();
++line_num;
str = stringf("%d %s %d %d %d %d", line_num, cell_type_translation.at(cell->type).c_str(), output_width, input_line, output_width+offset-1, offset);
fprintf(f, "%s\n", str.c_str());
line_ref[cell->name]=line_num;
}
else if(cell->type == "$concat")
{
log("writing concat cell\n");
const RTLIL::SigSpec* input_a = &cell->connections.at(RTLIL::IdString("\\A"));
int input_a_width = cell->parameters.at(RTLIL::IdString("\\A_WIDTH")).as_int();
assert(input_a->width == input_a_width);
int input_a_line = dump_sigspec(input_a, input_a_width);
const RTLIL::SigSpec* input_b = &cell->connections.at(RTLIL::IdString("\\B"));
int input_b_width = cell->parameters.at(RTLIL::IdString("\\B_WIDTH")).as_int();
assert(input_b->width == input_b_width);
int input_b_line = dump_sigspec(input_b, input_b_width);
++line_num;
str = stringf("%d %s %d %d %d", line_num, cell_type_translation.at(cell->type).c_str(), input_a_width+input_b_width,
input_a_line, input_b_line);
fprintf(f, "%s\n", str.c_str());
line_ref[cell->name]=line_num;
}
curr_cell.clear();
return line_num;
}

5
backends/btor/btor.ys
View File

@ -3,7 +3,10 @@ opt; opt_const -mux_undef; opt;
rename -hide;;;
#converting pmux to mux
techmap -share_map pmux2mux.v;;
memory -nomap;;
#explicit type conversion
splice; opt;
#extracting memories;
memory_dff -wr_only; memory_collect;;
#flatten design
flatten;;
#converting asyn memory write to syn memory

3
backends/btor/verilog2btor.sh
View File

@ -25,7 +25,8 @@ proc;
opt; opt_const -mux_undef; opt;
rename -hide;;;
techmap -share_map pmux2mux.v;;
memory_dff -wr_only
splice; opt;
memory_dff -wr_only;
memory_collect;;
flatten;;
memory_unpack;