Add support for printf and asserts, add testbench for asserts and printf

1 files changed, 27 insertions, 0 deletions

diff --git a/src/main/scala/Chisel/CoreUtil.scala b/src/main/scala/Chisel/CoreUtil.scala
new file mode 100644
index 00000000..41266cae
--- /dev/null
+++ b/src/main/scala/Chisel/CoreUtil.scala
@@ -0,0 +1,27 @@
+// See LICENSE for license details.
+
+package Chisel
+
+import internal._
+import internal.Builder.pushCommand
+import firrtl._
+
+object assert {
+  def apply(cond: Bool, message: String="") {
+    when(!cond) {
+      if (message.isEmpty()) {
+        printf(s"Assertion failed: (TODO: code / lineno)")
+      } else {
+        printf(s"Assertion failed: (TODO: code / lineno): $message")
+      }
+      pushCommand(Stop(Node(Builder.dynamicContext.currentModule.get.clock), 1))
+    }
+  }
+}
+
+object printf {
+  def apply(fmt: String, data: Bits*) {
+    pushCommand(Printf(Node(Builder.dynamicContext.currentModule.get.clock),
+        fmt, data.map(Node(_))))
+  }
+}