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-rw-r--r--kernel/rtlil.cc15
1 files changed, 15 insertions, 0 deletions
diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index 97a2946a6..b5cede8b2 100644
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -620,6 +620,16 @@ namespace {
return;
}
+ if (cell->type == "$fa") {
+ port("\\A", param("\\WIDTH"));
+ port("\\B", param("\\WIDTH"));
+ port("\\C", param("\\WIDTH"));
+ port("\\X", param("\\WIDTH"));
+ port("\\Y", param("\\WIDTH"));
+ check_expected();
+ return;
+ }
+
if (cell->type == "$alu") {
param_bool("\\A_SIGNED");
param_bool("\\B_SIGNED");
@@ -1793,6 +1803,11 @@ void RTLIL::Cell::fixup_parameters(bool set_a_signed, bool set_b_signed)
return;
}
+ if (type == "$fa") {
+ parameters["\\WIDTH"] = SIZE(connections_["\\Y"]);
+ return;
+ }
+
bool signedness_ab = !type.in("$slice", "$concat", "$macc");
if (connections_.count("\\A")) {