Added proper dumping of signed/unsigned parameters to verilog backend

diff --git a/backends/verilog/verilog_backend.cc b/backends/verilog/verilog_backend.cc
index d733bdc5a2b2bf88629060e804d7d98411fa7a36..4edf0392b156955d63036a973ea33e6496206b2e 100644 (file)
--- a/backends/verilog/verilog_backend.cc
+++ b/backends/verilog/verilog_backend.cc
@@ -149,7 +149,7 @@ bool is_reg_wire(RTLIL::SigSpec sig, std::string &reg_name)
        return true;
 }
 
-void dump_const(FILE *f, RTLIL::Const &data, int width = -1, int offset = 0, bool no_decimal = false)
+void dump_const(FILE *f, RTLIL::Const &data, int width = -1, int offset = 0, bool no_decimal = false, bool set_signed = false)
 {
        if (width < 0)
                width = data.bits.size() - offset;
@@ -163,10 +163,11 @@ void dump_const(FILE *f, RTLIL::Const &data, int width = -1, int offset = 0, boo
                                if (data.bits[i] == RTLIL::S1)
                                        val |= 1 << (i - offset);
                        }
-                       fprintf(f, "%s32'sd%u", val < 0 ? "-" : "", abs(val));
+                       // fprintf(f, "%s32'sd%u", val < 0 ? "-" : "", abs(val));
+                       fprintf(f, "%d", val);
                } else {
        dump_bits:
-                       fprintf(f, "%d'b", width);
+                       fprintf(f, "%d'%sb", width, set_signed ? "s" : "");
                        if (width == 0)
                                fprintf(f, "0");
                        for (int i = offset+width-1; i >= offset; i--) {
@@ -638,7 +639,8 @@ void dump_cell(FILE *f, std::string indent, RTLIL::Cell *cell)
                        if (it != cell->parameters.begin())
                                fprintf(f, ",");
                        fprintf(f, "\n%s  .%s(", indent.c_str(), id(it->first).c_str());
-                       dump_const(f, it->second);
+                       bool is_signed = cell->signed_parameters.count(it->first) > 0;
+                       dump_const(f, it->second, -1, 0, !is_signed, is_signed);
                        fprintf(f, ")");
                }
                fprintf(f, "\n%s" ")", indent.c_str());