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author | Clifford Wolf <clifford@clifford.at> | 2019-05-04 08:46:24 +0200 |
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committer | Clifford Wolf <clifford@clifford.at> | 2019-05-04 08:46:24 +0200 |
commit | 87426f5a06b0cf9d1fe44efda65e3c048d89d322 (patch) | |
tree | 18b19e16f34977758fb4df010daf389a7dce61fb /backends/verilog/verilog_backend.cc | |
parent | e2fb8ebe86f49523168c413c734ce4690d740351 (diff) | |
download | yosys-87426f5a06b0cf9d1fe44efda65e3c048d89d322.tar.gz yosys-87426f5a06b0cf9d1fe44efda65e3c048d89d322.tar.bz2 yosys-87426f5a06b0cf9d1fe44efda65e3c048d89d322.zip |
Improve write_verilog specify support
Signed-off-by: Clifford Wolf <clifford@clifford.at>
Diffstat (limited to 'backends/verilog/verilog_backend.cc')
-rw-r--r-- | backends/verilog/verilog_backend.cc | 86 |
1 files changed, 71 insertions, 15 deletions
diff --git a/backends/verilog/verilog_backend.cc b/backends/verilog/verilog_backend.cc index 93eaa8feb..9fd4ccbc8 100644 --- a/backends/verilog/verilog_backend.cc +++ b/backends/verilog/verilog_backend.cc @@ -183,8 +183,9 @@ bool is_reg_wire(RTLIL::SigSpec sig, std::string ®_name) return true; } -void dump_const(std::ostream &f, const RTLIL::Const &data, int width = -1, int offset = 0, bool no_decimal = false, bool set_signed = false, bool escape_comment = false) +void dump_const(std::ostream &f, const RTLIL::Const &data, int width = -1, int offset = 0, bool no_decimal = false, bool escape_comment = false) { + bool set_signed = (data.flags & RTLIL::CONST_FLAG_SIGNED) != 0; if (width < 0) width = data.bits.size() - offset; if (width == 0) { @@ -275,7 +276,8 @@ void dump_const(std::ostream &f, const RTLIL::Const &data, int width = -1, int o } } } else { - f << stringf("\""); + if ((data.flags & RTLIL::CONST_FLAG_REAL) == 0) + f << stringf("\""); std::string str = data.decode_string(); for (size_t i = 0; i < str.size(); i++) { if (str[i] == '\n') @@ -293,7 +295,8 @@ void dump_const(std::ostream &f, const RTLIL::Const &data, int width = -1, int o else f << str[i]; } - f << stringf("\""); + if ((data.flags & RTLIL::CONST_FLAG_REAL) == 0) + f << stringf("\""); } } @@ -373,7 +376,7 @@ void dump_attributes(std::ostream &f, std::string indent, dict<RTLIL::IdString, else if (modattr && (it->second == Const(1, 1) || it->second == Const(1))) f << stringf(" 1 "); else - dump_const(f, it->second, -1, 0, false, false, attr2comment); + dump_const(f, it->second, -1, 0, false, attr2comment); f << stringf(" %s%c", attr2comment ? "*/" : "*)", term); } } @@ -1287,13 +1290,68 @@ bool dump_cell_expr(std::ostream &f, std::string indent, RTLIL::Cell *cell) dump_sigspec(f, cell->getPort("\\DST")); } - f << stringf(") = (%d:%d:%d, %d:%d:%d);\n", - cell->getParam("\\T_RISE_MIN").as_int(), - cell->getParam("\\T_RISE_TYP").as_int(), - cell->getParam("\\T_RISE_MAX").as_int(), - cell->getParam("\\T_FALL_MIN").as_int(), - cell->getParam("\\T_FALL_TYP").as_int(), - cell->getParam("\\T_FALL_MAX").as_int()); + bool bak_decimal = decimal; + decimal = 1; + + f << ") = ("; + dump_const(f, cell->getParam("\\T_RISE_MIN")); + f << ":"; + dump_const(f, cell->getParam("\\T_RISE_TYP")); + f << ":"; + dump_const(f, cell->getParam("\\T_RISE_MAX")); + f << ", "; + dump_const(f, cell->getParam("\\T_FALL_MIN")); + f << ":"; + dump_const(f, cell->getParam("\\T_FALL_TYP")); + f << ":"; + dump_const(f, cell->getParam("\\T_FALL_MAX")); + f << ");\n"; + + decimal = bak_decimal; + + f << stringf("%s" "endspecify\n", indent.c_str()); + return true; + } + + if (cell->type == "$specrule") + { + f << stringf("%s" "specify\n%s ", indent.c_str(), indent.c_str()); + + string spec_type = cell->getParam("\\TYPE").decode_string(); + f << stringf("%s(", spec_type.c_str()); + + if (cell->getParam("\\SRC_PEN").as_bool()) + f << (cell->getParam("\\SRC_POL").as_bool() ? "posedge ": "negedge "); + dump_sigspec(f, cell->getPort("\\SRC")); + + if (cell->getPort("\\SRC_EN") != State::S1) { + f << " &&& "; + dump_sigspec(f, cell->getPort("\\SRC_EN")); + } + + f << ", "; + if (cell->getParam("\\DST_PEN").as_bool()) + f << (cell->getParam("\\DST_POL").as_bool() ? "posedge ": "negedge "); + dump_sigspec(f, cell->getPort("\\DST")); + + if (cell->getPort("\\DST_EN") != State::S1) { + f << " &&& "; + dump_sigspec(f, cell->getPort("\\DST_EN")); + } + + bool bak_decimal = decimal; + decimal = 1; + + f << ", "; + dump_const(f, cell->getParam("\\T_LIMIT")); + + if (spec_type == "$setuphold" || spec_type == "$recrem" || spec_type == "$fullskew") { + f << ", "; + dump_const(f, cell->getParam("\\T_LIMIT2")); + } + + f << ");\n"; + decimal = bak_decimal; f << stringf("%s" "endspecify\n", indent.c_str()); return true; @@ -1321,8 +1379,7 @@ void dump_cell(std::ostream &f, std::string indent, RTLIL::Cell *cell) if (it != cell->parameters.begin()) f << stringf(","); f << stringf("\n%s .%s(", indent.c_str(), id(it->first).c_str()); - bool is_signed = (it->second.flags & RTLIL::CONST_FLAG_SIGNED) != 0; - dump_const(f, it->second, -1, 0, false, is_signed); + dump_const(f, it->second); f << stringf(")"); } f << stringf("\n%s" ")", indent.c_str()); @@ -1369,8 +1426,7 @@ void dump_cell(std::ostream &f, std::string indent, RTLIL::Cell *cell) if (defparam && cell->parameters.size() > 0) { for (auto it = cell->parameters.begin(); it != cell->parameters.end(); ++it) { f << stringf("%sdefparam %s.%s = ", indent.c_str(), cell_name.c_str(), id(it->first).c_str()); - bool is_signed = (it->second.flags & RTLIL::CONST_FLAG_SIGNED) != 0; - dump_const(f, it->second, -1, 0, false, is_signed); + dump_const(f, it->second); f << stringf(";\n"); } } |