3 files changed, 34 insertions, 1 deletions
diff --git a/frontends/ast/ast.cc b/frontends/ast/ast.cc
index 83993eea9..b5b968e9e 100644
--- a/frontends/ast/ast.cc
+++ b/frontends/ast/ast.cc
@@ -154,6 +154,7 @@ std::string AST::type2str(AstNodeType type)
 	X(AST_GENIF)
 	X(AST_GENCASE)
 	X(AST_GENBLOCK)
+	X(AST_TECALL)
 	X(AST_POSEDGE)
 	X(AST_NEGEDGE)
 	X(AST_EDGE)
diff --git a/frontends/ast/ast.h b/frontends/ast/ast.h
index 46d482f1a..b8cde060e 100644
--- a/frontends/ast/ast.h
+++ b/frontends/ast/ast.h
@@ -137,7 +137,8 @@ namespace AST
 		AST_GENIF,
 		AST_GENCASE,
 		AST_GENBLOCK,
-
+		AST_TECALL,
+		
 		AST_POSEDGE,
 		AST_NEGEDGE,
 		AST_EDGE,
diff --git a/frontends/ast/genrtlil.cc b/frontends/ast/genrtlil.cc
index d2651c9aa..32ed401eb 100644
--- a/frontends/ast/genrtlil.cc
+++ b/frontends/ast/genrtlil.cc
@@ -1575,6 +1575,37 @@ RTLIL::SigSpec AstNode::genRTLIL(int width_hint, bool sign_hint)
 			delete always;
 		} break;
 
+	case AST_TECALL: {
+			int sz = children.size();
+			if (str == "$info") {
+				if (sz > 0)
+					log_file_info(filename, linenum, "%s.\n", children[0]->str.c_str());
+				else
+					log_file_info(filename, linenum, "\n");
+			} else if (str == "$warning") {
+				if (sz > 0)
+					log_file_warning(filename, linenum, "%s.\n", children[0]->str.c_str());
+				else
+					log_file_warning(filename, linenum, "\n");
+			} else if (str == "$error") {
+				if (sz > 0)
+					log_file_error(filename, linenum, "%s.\n", children[0]->str.c_str());
+				else
+					log_file_error(filename, linenum, "\n");
+			} else if (str == "$fatal") {
+				// TODO: 1st parameter, if exists, is 0,1 or 2, and passed to $finish()
+				// if no parameter is given, default value is 1
+				// dollar_finish(sz ? children[0] : 1);
+				// perhaps create & use log_file_fatal()
+				if (sz > 0)
+					log_file_error(filename, linenum, "FATAL: %s.\n", children[0]->str.c_str());
+				else
+					log_file_error(filename, linenum, "FATAL.\n");
+			} else {
+				log_file_error(filename, linenum, "Unknown elabortoon system task '%s'.\n", str.c_str());
+			}
+		} break;
+
 	case AST_FCALL: {
 			if (str == "\\$anyconst" || str == "\\$anyseq" || str == "\\$allconst" || str == "\\$allseq")
 			{