From 3a1490888d05ac49d82aebad9ec6979aae32a8b0 Mon Sep 17 00:00:00 2001 From: Ahmed Irfan Date: Wed, 15 Jan 2014 17:36:33 +0100 Subject: width issues dff cell for more than one registers --- backends/btor/btor.cc | 151 +++++++++++++++++++++++++++++--------------------- 1 file changed, 87 insertions(+), 64 deletions(-) (limited to 'backends/btor') 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 -#include #include #include #include @@ -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; jchunks.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; ichunks.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; ichunks.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 mod_list; -- cgit v1.2.3