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cxxrtl: export wire attributes through the C API.

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Co-authored-by: Charlotte <charlotte@lottia.net>
This commit is contained in:
Catherine 2023-10-09 11:45:12 +00:00
parent d21c464ae4
commit 6ffc315936
4 changed files with 206 additions and 39 deletions
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91
backends/cxxrtl/cxxrtl_backend.cc
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@ -2120,6 +2120,46 @@ struct CxxrtlWorker {
dec_indent();
}
void dump_metadata_map(const dict<RTLIL::IdString, RTLIL::Const> &metadata_map)
{
if (metadata_map.empty()) {
f << "metadata_map()";
return;
}
f << "metadata_map({\n";
inc_indent();
for (auto metadata_item : metadata_map) {
if (!metadata_item.first.isPublic())
continue;
if (metadata_item.second.size() > 64 && (metadata_item.second.flags & RTLIL::CONST_FLAG_STRING) == 0) {
f << indent << "/* attribute " << metadata_item.first.str().substr(1) << " is over 64 bits wide */";
continue;
}
f << indent << "{ " << escape_cxx_string(metadata_item.first.str().substr(1)) << ", ";
// In Yosys, a real is a type of string.
if (metadata_item.second.flags & RTLIL::CONST_FLAG_REAL) {
f << std::showpoint << std::stod(metadata_item.second.decode_string()) << std::noshowpoint;
} else if (metadata_item.second.flags & RTLIL::CONST_FLAG_STRING) {
f << escape_cxx_string(metadata_item.second.decode_string());
} else if (metadata_item.second.flags & RTLIL::CONST_FLAG_SIGNED) {
f << "INT64_C(" << metadata_item.second.as_int(/*is_signed=*/true) << ")";
} else {
f << "UINT64_C(" << metadata_item.second.as_int(/*is_signed=*/false) << ")";
}
f << " },\n";
}
dec_indent();
f << indent << "})";
}
void dump_debug_attrs(const RTLIL::AttrObject *object)
{
dict<RTLIL::IdString, RTLIL::Const> attributes = object->attributes;
// Inherently necessary to get access to the object, so a waste of space to emit.
attributes.erase(ID::hdlname);
dump_metadata_map(attributes);
}
void dump_debug_info_method(RTLIL::Module *module)
{
size_t count_public_wires = 0;
@ -2205,7 +2245,9 @@ struct CxxrtlWorker {
}
f << "debug_item::" << flag;
}
f << "));\n";
f << "), ";
dump_debug_attrs(wire);
f << ");\n";
count_member_wires++;
break;
}
@ -2220,7 +2262,9 @@ struct CxxrtlWorker {
f << "debug_eval_outline";
else
f << "debug_alias()";
f << ", " << mangle(aliasee) << ", " << wire->start_offset << "));\n";
f << ", " << mangle(aliasee) << ", " << wire->start_offset << "), ";
dump_debug_attrs(aliasee);
f << ");\n";
count_alias_wires++;
break;
}
@ -2230,14 +2274,18 @@ struct CxxrtlWorker {
dump_const(debug_wire_type.sig_subst.as_const());
f << ";\n";
f << indent << "items.add(path + " << escape_cxx_string(get_hdl_name(wire));
f << ", debug_item(const_" << mangle(wire) << ", " << wire->start_offset << "));\n";
f << ", debug_item(const_" << mangle(wire) << ", " << wire->start_offset << "), ";
dump_debug_attrs(wire);
f << ");\n";
count_const_wires++;
break;
}
case WireType::OUTLINE: {
// Localized or inlined, but rematerializable wire
f << indent << "items.add(path + " << escape_cxx_string(get_hdl_name(wire));
f << ", debug_item(debug_eval_outline, " << mangle(wire) << ", " << wire->start_offset << "));\n";
f << ", debug_item(debug_eval_outline, " << mangle(wire) << ", " << wire->start_offset << "), ";
dump_debug_attrs(wire);
f << ");\n";
count_inline_wires++;
break;
}
@ -2254,7 +2302,13 @@ struct CxxrtlWorker {
continue;
f << indent << "items.add(path + " << escape_cxx_string(mem.packed ? get_hdl_name(mem.cell) : get_hdl_name(mem.mem));
f << ", debug_item(" << mangle(&mem) << ", ";
f << mem.start_offset << "));\n";
f << mem.start_offset << "), ";
if (mem.packed) {
dump_debug_attrs(mem.cell);
} else {
dump_debug_attrs(mem.mem);
}
f << ");\n";
}
for (auto cell : module->cells()) {
if (is_internal_cell(cell->type))
@ -2282,33 +2336,6 @@ struct CxxrtlWorker {
}
}
void dump_metadata_map(const dict<RTLIL::IdString, RTLIL::Const> &metadata_map)
{
if (metadata_map.empty()) {
f << "metadata_map()";
return;
}
f << "metadata_map({\n";
inc_indent();
for (auto metadata_item : metadata_map) {
if (!metadata_item.first.begins_with("\\"))
continue;
f << indent << "{ " << escape_cxx_string(metadata_item.first.str().substr(1)) << ", ";
if (metadata_item.second.flags & RTLIL::CONST_FLAG_REAL) {
f << std::showpoint << std::stod(metadata_item.second.decode_string()) << std::noshowpoint;
} else if (metadata_item.second.flags & RTLIL::CONST_FLAG_STRING) {
f << escape_cxx_string(metadata_item.second.decode_string());
} else {
f << metadata_item.second.as_int(/*is_signed=*/metadata_item.second.flags & RTLIL::CONST_FLAG_SIGNED);
if (!(metadata_item.second.flags & RTLIL::CONST_FLAG_SIGNED))
f << "u";
}
f << " },\n";
}
dec_indent();
f << indent << "})";
}
void dump_module_intf(RTLIL::Module *module)
{
dump_attrs(module);