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authorAhmed Irfan <ahmedirfan1983@gmail.com>2014-01-15 17:36:33 +0100
committerAhmed Irfan <ahmedirfan1983@gmail.com>2014-01-15 17:36:33 +0100
commit3a1490888d05ac49d82aebad9ec6979aae32a8b0 (patch)
tree90e4cc4d7b7f5bca0d2a958894a11bde00444b54 /backends/btor/btor.cc
parent8661626157f1a0d13a60580e93c614b6abb1bea6 (diff)
width issues
dff cell for more than one registers
Diffstat (limited to 'backends/btor/btor.cc')
-rw-r--r--backends/btor/btor.cc151
1 files changed, 87 insertions, 64 deletions
diff --git a/backends/btor/btor.cc b/backends/btor/btor.cc
index 4190fc89..fcb6a47a 100644
--- a/backends/btor/btor.cc
+++ b/backends/btor/btor.cc
@@ -28,7 +28,6 @@
#include "kernel/celltypes.h"
#include "kernel/log.h"
#include <string>
-#include <queue>
#include <assert.h>
#include <math.h>
#include <regex>
@@ -173,15 +172,15 @@ struct BtorDumper
else
{
int prev_wire_line=0; //previously dumped wire line
- int start_bit=cell_output->width-1;
+ int start_bit=cell_output->width;
for(unsigned j=0; j<cell_output->chunks.size(); ++j)
{
if(cell_output->chunks[j].wire->name == wire->name)
{
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);
+ str = stringf("%d slice %d %d %d %d;1", line_num, cell_output->chunks[j].width,
+ cell_line, start_bit-1, start_bit-cell_output->chunks[j].width);
fprintf(f, "%s\n", str.c_str());
wire_width += cell_output->chunks[j].width;
if(prev_wire_line!=0)
@@ -241,7 +240,7 @@ struct BtorDumper
width = data->bits.size() - offset;
std::string data_str = data->as_string();
- if(offset > 0)
+ //if(offset > 0)
data_str = data_str.substr(offset, width);
++line_num;
@@ -269,23 +268,13 @@ struct BtorDumper
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;
+ int wire_line_num = dump_wire(chunk->wire);
+ assert(wire_line_num>0);
+ ++line_num;
+ str = stringf("%d slice %d %d %d %d;2", line_num, chunk->width, wire_line_num,
+ chunk->wire->width - chunk->offset - 1, chunk->wire->width - chunk->offset - chunk->width);
+ fprintf(f, "%s\n", str.c_str());
+ l = line_num;
}
}
return l;
@@ -355,7 +344,7 @@ struct BtorDumper
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);
+ 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;
}
@@ -396,7 +385,7 @@ struct BtorDumper
if(output_width < w && (cell->type == "$not" || cell->type == "$neg" || cell->type == "$pos"))
{
++line_num;
- str = stringf ("%d slice %d %d %d %d", line_num, output_width, cell_line, output_width-1, 0);
+ str = stringf ("%d slice %d %d %d %d;4", line_num, output_width, cell_line, output_width-1, 0);
fprintf(f, "%s\n", str.c_str());
cell_line = line_num;
}
@@ -450,6 +439,7 @@ struct BtorDumper
}
else if(cell->type == "$shr" || cell->type == "$shl" || cell->type == "$sshr" || cell->type == "$sshl")
{
+ //TODO: second operand width greater than the log_2(width of the first operand)
assert(l2_width <= ceil(log(l1_width)/log(2)) );
l2_width = ceil(log(l1_width)/log(2));
}
@@ -477,7 +467,7 @@ struct BtorDumper
if(output_width < l1_width)
{
++line_num;
- str = stringf ("%d slice %d %d %d %d", line_num, output_width, line_num-1, output_width-1, 0);
+ str = stringf ("%d slice %d %d %d %d;5", line_num, output_width, line_num-1, output_width-1, 0);
fprintf(f, "%s\n", str.c_str());
}
line_ref[cell->name]=line_num;
@@ -488,21 +478,31 @@ struct BtorDumper
int output_width = cell->parameters.at(RTLIL::IdString("\\Y_WIDTH")).as_int();
int l1 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\A")), output_width);
int l2 = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\B")), output_width);
- ++line_num;
- str = stringf ("%d %s %d %d", line_num, cell_type_translation.at("$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("$reduce_or").c_str(), output_width, l2);
- fprintf(f, "%s\n", str.c_str());
+ int l1_width = cell->parameters.at(RTLIL::IdString("\\A_WIDTH")).as_int();
+ int l2_width = cell->parameters.at(RTLIL::IdString("\\B_WIDTH")).as_int();
+ if(l1_width >1)
+ {
+ ++line_num;
+ str = stringf ("%d %s %d %d", line_num, cell_type_translation.at("$reduce_or").c_str(), output_width, l1);
+ fprintf(f, "%s\n", str.c_str());
+ l1 = line_num;
+ }
+ if(l2_width > 1)
+ {
+ ++line_num;
+ str = stringf ("%d %s %d %d", line_num, cell_type_translation.at("$reduce_or").c_str(), output_width, l2);
+ fprintf(f, "%s\n", str.c_str());
+ l2 = line_num;
+ }
if(cell->type == "$logic_and")
{
++line_num;
- str = stringf ("%d %s %d %d %d", line_num, cell_type_translation.at("$and").c_str(), output_width, line_num-2, line_num-1);
+ str = stringf ("%d %s %d %d %d", line_num, cell_type_translation.at("$and").c_str(), output_width, l1, l2);
}
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);
+ str = stringf ("%d %s %d %d %d", line_num, cell_type_translation.at("$or").c_str(), output_width, l1, l2);
}
fprintf(f, "%s\n", str.c_str());
line_ref[cell->name]=line_num;
@@ -527,44 +527,61 @@ struct BtorDumper
log("writing cell - %s\n", cstr(cell->type));
int output_width = cell->parameters.at(RTLIL::IdString("\\WIDTH")).as_int();
log(" - width is %d\n", output_width);
- int reg = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\Q")), output_width);//register
int cond = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\CLK")), 1);
bool polarity = cell->parameters.at(RTLIL::IdString("\\CLK_POLARITY")).as_bool();
+ const RTLIL::SigSpec* cell_output = &cell->connections.at(RTLIL::IdString("\\Q"));
int value = dump_sigspec(&cell->connections.at(RTLIL::IdString("\\D")), output_width);
- if(cell->type == "$dffsr")
+ unsigned start_bit = output_width;
+ for(unsigned i=0; i<cell_output->chunks.size(); ++i)
{
- 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();
+ output_width = cell_output->chunks[i].width;
+ assert( output_width == cell_output->chunks[i].wire->width);//full reg is given the next value
+ int reg = dump_wire(cell_output->chunks[i].wire);//register
+ int slice = value;
+ if(cell_output->chunks.size()>1)
+ {
+ slice = ++line_num;
+ str = stringf ("%d slice %d %d %d %d;", line_num, output_width, value, start_bit-1,
+ start_bit-output_width);
+ fprintf(f, "%s\n", str.c_str());
+ start_bit-=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, slice);
+ fprintf(f, "%s\n", str.c_str());
+ slice = line_num;
+ }
++line_num;
- str = stringf ("%d %s %d %s%d %s%d %d", line_num, cell_type_translation.at("$mux").c_str(),
- output_width, sync_reset_pol ? "":"-", sync_reset, sync_reset_value_pol? "":"-",
- sync_reset_value, value);
- fprintf(f, "%s\n", str.c_str());
- value = line_num;
- }
- ++line_num;
- str = stringf ("%d %s %d %s%d %d %d", line_num, cell_type_translation.at("$mux").c_str(),
- output_width, polarity?"":"-", cond, value, reg);
+ str = stringf ("%d %s %d %s%d %d %d", line_num, cell_type_translation.at("$mux").c_str(),
+ output_width, polarity?"":"-", cond, slice, reg);
- fprintf(f, "%s\n", str.c_str());
- int next = line_num;
- if(cell->type == "$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);
+ 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;
- str = stringf ("%d %s %d %s%d %d %d", line_num, cell_type_translation.at("$mux").c_str(),
- output_width, async_reset_pol ? "":"-", async_reset, async_reset_value, next);
+ str = stringf ("%d %s %d %d %d", line_num, cell_type_translation.at(cell->type).c_str(),
+ output_width, reg, next);
fprintf(f, "%s\n", str.c_str());
}
- ++line_num;
- str = stringf ("%d %s %d %d %d",
- line_num, cell_type_translation.at(cell->type).c_str(), output_width, reg, next);
- fprintf(f, "%s\n", str.c_str());
line_ref[cell->name]=line_num;
}
//memories
@@ -686,8 +703,13 @@ struct BtorDumper
else if(cell->type == "$dff" || cell->type == "$adff" || cell->type == "$dffsr")
{
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;
+ for(unsigned i=0; i<output_sig->chunks.size(); ++i)
+ {
+ RTLIL::Wire *w = output_sig->chunks[i].wire;
+ RTLIL::IdString wire_id = w->name;
+ inter_wire_map[wire_id].insert(WireInfo(cell->name,&output_sig->chunks[i]));
+ basic_wires[wire_id] = true;
+ }
}
else
{
@@ -794,6 +816,7 @@ struct BtorBackend : public Backend {
top_module_name = mod_it.first;
fprintf(f, "; Generated by %s\n", yosys_version_str);
+ fprintf(f, "; BTOR Backend developed at FBK\n");
std::vector<RTLIL::Module*> mod_list;