initial import

1 files changed, 210 insertions, 0 deletions

diff --git a/kernel/celltypes.h b/kernel/celltypes.h
new file mode 100644
index 000000000..a13cbf32c
--- /dev/null
+++ b/kernel/celltypes.h
@@ -0,0 +1,210 @@
+/*
+ *  yosys -- Yosys Open SYnthesis Suite
+ *
+ *  Copyright (C) 2012  Clifford Wolf <clifford@clifford.at>
+ *  
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *  
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#ifndef CELLTYPES_H
+#define CELLTYPES_H
+
+#include <set>
+#include <string>
+#include <stdlib.h>
+
+struct CellTypes
+{
+	std::set<std::string> cell_types;
+
+	void setup_internals()
+	{
+		cell_types.insert("$not");
+		cell_types.insert("$pos");
+		cell_types.insert("$neg");
+		cell_types.insert("$and");
+		cell_types.insert("$or");
+		cell_types.insert("$xor");
+		cell_types.insert("$xnor");
+		cell_types.insert("$reduce_and");
+		cell_types.insert("$reduce_or");
+		cell_types.insert("$reduce_xor");
+		cell_types.insert("$reduce_xnor");
+		cell_types.insert("$reduce_bool");
+		cell_types.insert("$shl");
+		cell_types.insert("$shr");
+		cell_types.insert("$sshl");
+		cell_types.insert("$sshr");
+		cell_types.insert("$lt");
+		cell_types.insert("$le");
+		cell_types.insert("$eq");
+		cell_types.insert("$ne");
+		cell_types.insert("$ge");
+		cell_types.insert("$gt");
+		cell_types.insert("$add");
+		cell_types.insert("$sub");
+		cell_types.insert("$mul");
+		cell_types.insert("$div");
+		cell_types.insert("$mod");
+		cell_types.insert("$pow");
+		cell_types.insert("$logic_not");
+		cell_types.insert("$logic_and");
+		cell_types.insert("$logic_or");
+		cell_types.insert("$mux");
+		cell_types.insert("$pmux");
+		cell_types.insert("$safe_pmux");
+	}
+
+	void setup_internals_mem()
+	{
+		cell_types.insert("$dff");
+		cell_types.insert("$adff");
+		cell_types.insert("$memrd");
+		cell_types.insert("$memwr");
+		cell_types.insert("$mem");
+		cell_types.insert("$fsm");
+	}
+
+	void setup_stdcells()
+	{
+		cell_types.insert("$_INV_");
+		cell_types.insert("$_AND_");
+		cell_types.insert("$_OR_");
+		cell_types.insert("$_XOR_");
+		cell_types.insert("$_MUX_");
+	}
+
+	void setup_stdcells_mem()
+	{
+		cell_types.insert("$_DFF_N_");
+		cell_types.insert("$_DFF_P_");
+		cell_types.insert("$_DFF_NN0_");
+		cell_types.insert("$_DFF_NN1_");
+		cell_types.insert("$_DFF_NP0_");
+		cell_types.insert("$_DFF_NP1_");
+		cell_types.insert("$_DFF_PN0_");
+		cell_types.insert("$_DFF_PN1_");
+		cell_types.insert("$_DFF_PP0_");
+		cell_types.insert("$_DFF_PP1_");
+	}
+
+	void clear()
+	{
+		cell_types.clear();
+	}
+
+	bool cell_known(std::string type)
+	{
+		return cell_types.count(type) > 0;
+	}
+
+	bool cell_output(std::string type, std::string port)
+	{
+		if (!cell_known(type))
+			return false;
+		if (port == "\\Y" || port == "\\Q" || port == "\\RD_DATA")
+			return true;
+		if (type == "$memrd" && port == "\\DATA")
+			return true;
+		if (type == "$fsm" && port == "\\CTRL_OUT")
+			return true;
+		return false;
+	}
+
+	bool cell_input(std::string type, std::string port)
+	{
+		if (!cell_known(type))
+			return false;
+		return !cell_output(type, port);
+	}
+
+	static RTLIL::Const eval(std::string type, const RTLIL::Const &arg1, const RTLIL::Const &arg2, bool signed1, bool signed2, int result_len)
+	{
+#define HANDLE_CELL_TYPE(_t) if (type == "$" #_t) return const_ ## _t(arg1, arg2, signed1, signed2, result_len);
+		HANDLE_CELL_TYPE(not)
+		HANDLE_CELL_TYPE(and)
+		HANDLE_CELL_TYPE(or)
+		HANDLE_CELL_TYPE(xor)
+		HANDLE_CELL_TYPE(xnor)
+		HANDLE_CELL_TYPE(reduce_and)
+		HANDLE_CELL_TYPE(reduce_or)
+		HANDLE_CELL_TYPE(reduce_xor)
+		HANDLE_CELL_TYPE(reduce_xnor)
+		HANDLE_CELL_TYPE(reduce_bool)
+		HANDLE_CELL_TYPE(logic_not)
+		HANDLE_CELL_TYPE(logic_and)
+		HANDLE_CELL_TYPE(logic_or)
+		HANDLE_CELL_TYPE(shl)
+		HANDLE_CELL_TYPE(shr)
+		HANDLE_CELL_TYPE(sshl)
+		HANDLE_CELL_TYPE(sshr)
+		HANDLE_CELL_TYPE(lt)
+		HANDLE_CELL_TYPE(le)
+		HANDLE_CELL_TYPE(eq)
+		HANDLE_CELL_TYPE(ne)
+		HANDLE_CELL_TYPE(ge)
+		HANDLE_CELL_TYPE(gt)
+		HANDLE_CELL_TYPE(add)
+		HANDLE_CELL_TYPE(sub)
+		HANDLE_CELL_TYPE(mul)
+		HANDLE_CELL_TYPE(div)
+		HANDLE_CELL_TYPE(mod)
+		HANDLE_CELL_TYPE(pow)
+		HANDLE_CELL_TYPE(pos)
+		HANDLE_CELL_TYPE(neg)
+#undef HANDLE_CELL_TYPE
+
+		if (type == "$_INV_")
+			return const_not(arg1, arg2, false, false, 1);
+		if (type == "$_AND_")
+			return const_and(arg1, arg2, false, false, 1);
+		if (type == "$_OR_")
+			return const_or(arg1, arg2, false, false, 1);
+		if (type == "$_XOR_")
+			return const_xor(arg1, arg2, false, false, 1);
+
+		assert(!"Called CellType.eval() with unsupported cell type!");
+		abort();
+	}
+
+	static RTLIL::Const eval(RTLIL::Cell *cell, const RTLIL::Const &arg1, const RTLIL::Const &arg2)
+	{
+		bool signed_a = cell->parameters.count("\\A_SIGNED") > 0 && cell->parameters["\\A_SIGNED"].as_bool();
+		bool signed_b = cell->parameters.count("\\B_SIGNED") > 0 && cell->parameters["\\B_SIGNED"].as_bool();
+		int result_len = cell->parameters.count("\\Y_WIDTH") > 0 ? cell->parameters["\\Y_WIDTH"].as_int() : -1;
+		return eval(cell->type, arg1, arg2, signed_a, signed_b, result_len);
+	}
+
+	static RTLIL::Const eval(RTLIL::Cell *cell, const RTLIL::Const &arg1, const RTLIL::Const &arg2, const RTLIL::Const &sel)
+	{
+		if (cell->type == "$mux" || cell->type == "$pmux" || cell->type == "$safe_pmux" || cell->type == "$_MUX_") {
+			RTLIL::Const ret = arg1;
+			for (size_t i = 0; i < sel.bits.size(); i++)
+				if (sel.bits[i] == RTLIL::State::S1) {
+					std::vector<RTLIL::State> bits(arg2.bits.begin() + i*arg1.bits.size(), arg2.bits.begin() + (i+1)*arg1.bits.size());
+					ret = RTLIL::Const(bits);
+				}
+			return ret;
+		}
+
+		assert(sel.bits.size() == 0);
+		bool signed_a = cell->parameters.count("\\A_SIGNED") > 0 && cell->parameters["\\A_SIGNED"].as_bool();
+		bool signed_b = cell->parameters.count("\\B_SIGNED") > 0 && cell->parameters["\\B_SIGNED"].as_bool();
+		int result_len = cell->parameters.count("\\Y_WIDTH") > 0 ? cell->parameters["\\Y_WIDTH"].as_int() : -1;
+		return eval(cell->type, arg1, arg2, signed_a, signed_b, result_len);
+	}
+};
+
+#endif
+