testsuite/synth: add a test for black boxes

4 files changed, 80 insertions, 0 deletions

diff --git a/testsuite/synth/blackbox01/blackbox1.vhdl b/testsuite/synth/blackbox01/blackbox1.vhdl
new file mode 100644
index 000000000..01bef9ad8
--- /dev/null
+++ b/testsuite/synth/blackbox01/blackbox1.vhdl
@@ -0,0 +1,20 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity blackbox1 is
+  port (a, b : in std_logic_vector(7 downto 0);
+        r : out std_logic_vector(7 downto 0));
+end blackbox1;
+
+architecture behav of blackbox1 is
+  component blackbox1_adder is
+    port (a, b : in std_logic_vector(7 downto 0);
+          r : out std_logic_vector(7 downto 0));
+  end component;
+  signal t : std_logic_vector(7 downto 0);
+begin
+  adder: blackbox1_adder
+    port map (a, b, t);
+
+  r <= t and x"ee";
+end behav;
diff --git a/testsuite/synth/blackbox01/blackbox1_adder.vhdl b/testsuite/synth/blackbox01/blackbox1_adder.vhdl
new file mode 100644
index 000000000..579c5e70d
--- /dev/null
+++ b/testsuite/synth/blackbox01/blackbox1_adder.vhdl
@@ -0,0 +1,13 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity blackbox1_adder is
+  port (a, b : in std_logic_vector(7 downto 0);
+        r : out std_logic_vector(7 downto 0));
+end blackbox1_adder;
+
+architecture behav of blackbox1_adder is
+begin
+  r <= std_logic_vector(unsigned(a) + unsigned(b));
+end behav;
diff --git a/testsuite/synth/blackbox01/tb_blackbox1.vhdl b/testsuite/synth/blackbox01/tb_blackbox1.vhdl
new file mode 100644
index 000000000..695be78d5
--- /dev/null
+++ b/testsuite/synth/blackbox01/tb_blackbox1.vhdl
@@ -0,0 +1,33 @@
+entity tb_blackbox1 is
+end tb_blackbox1;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_blackbox1 is
+  signal a, b : std_logic_vector(7 downto 0);
+  signal r :std_logic_vector(7 downto 0);
+begin
+  dut: entity work.blackbox1
+    port map (a, b, r);
+
+  process
+  begin
+    a <= x"40";
+    b <= x"04";
+    wait for 1 ns;
+    assert r = x"44" severity failure;
+
+    a <= x"b5";
+    b <= x"11";
+    wait for 1 ns;
+    assert r = x"c6" severity failure;
+
+    a <= x"b5";
+    b <= x"23";
+    wait for 1 ns;
+    assert r = x"c8" severity failure;
+
+    wait;
+  end process;
+end behav;
diff --git a/testsuite/synth/blackbox01/testsuite.sh b/testsuite/synth/blackbox01/testsuite.sh
new file mode 100755
index 000000000..9e5802045
--- /dev/null
+++ b/testsuite/synth/blackbox01/testsuite.sh
@@ -0,0 +1,14 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+analyze blackbox1_adder.vhdl blackbox1.vhdl tb_blackbox1.vhdl
+elab_simulate tb_blackbox1
+clean
+
+synth blackbox1.vhdl -e > syn_blackbox1.vhdl
+analyze blackbox1_adder.vhdl syn_blackbox1.vhdl tb_blackbox1.vhdl
+elab_simulate tb_blackbox1
+clean
+
+echo "Test successful"