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/*
Copyright (c) 2011, 2012, 2013, 2014 The Regents of the University of
California (Regents). All Rights Reserved. Redistribution and use in
source and binary forms, with or without modification, are permitted
provided that the following conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the following
two paragraphs of disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
two paragraphs of disclaimer in the documentation and/or other materials
provided with the distribution.
* Neither the name of the Regents nor the names of its contributors
may be used to endorse or promote products derived from this
software without specific prior written permission.
IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
REGENTS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF
ANY, PROVIDED HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION
TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
MODIFICATIONS.
*/
package Chisel
import collection.mutable.{ArrayBuffer, HashSet, HashMap, Stack, LinkedHashSet, Queue => ScalaQueue}
import scala.math.min
trait FileSystemUtilities {
/** Ensures a directory *dir* exists on the filesystem. */
def ensureDir(dir: String): String = {
val d = dir + (if (dir == "" || dir(dir.length-1) == '/') "" else "/")
new java.io.File(d).mkdirs()
d
}
def createOutputFile(name: String, contents: String) {
val f = new java.io.FileWriter(name)
f.write(contents)
f.close
}
def appendString(s1:Option[String],s2:Option[String]):String = {
if(s1.isEmpty && s2.isEmpty) "" else {
if(!s1.isEmpty) {
s1.get + (if(!s2.isEmpty) "." + s2.get else "")
} else {
if(!s2.isEmpty) s2.get else ""
}
}
}
def getArg(s:String,i:Int):String = s.split('.')(i)
}
object Driver extends FileSystemUtilities {
/** Instantiates a ChiselConfig class with the given name and uses it for elaboration */
def elaborateWithConfigName[T <: Module](
gen: () => T,
configClassName: String,
projectName: Option[String] = None,
collectConstraints: Boolean = false): Unit = {
val className = appendString(projectName,Some(configClassName))
val config = try {
Class.forName(className).newInstance.asInstanceOf[ChiselConfig]
} catch {
case e: java.lang.ClassNotFoundException =>
throwException("Could not find the ChiselConfig subclass you asked for (i.e. \"" +
className + "\"), did you misspell it?", e)
}
elaborateWithConfig(gen, config, collectConstraints)
}
/** Uses the provided ChiselConfig for elaboration */
def elaborateWithConfig[T <: Module](
gen: () => T,
config: ChiselConfig,
collectConstraints: Boolean = false): Unit = {
val world = if(collectConstraints) config.toCollector else config.toInstance
val p = Parameters.root(world)
config.topConstraints.foreach(c => p.constrain(c))
elaborate(gen, p, config)
}
/** Elaborates the circuit specified in the gen function, optionally uses
* a parameter space to supply context-aware values.
* TODO: Distinguish between cases where we dump to file vs return IR for
* use by other Drivers.
*/
private[Chisel] def elaborateWrappedModule[T <: Module](gen: () => T, p: Parameters, c: Option[ChiselConfig]) {
try {
ChiselError.clear()
ChiselError.info("Elaborating design...")
val ir = build(gen())
ChiselError.info("Done elaborating.")
val name = c match {
case None => ir.main
case Some(config) => s"${ir.main}.$config"
}
createOutputFile(s"$name.knb", p.getKnobs)
createOutputFile(s"$name.cst", p.getConstraints)
createOutputFile(s"$name.prm", Dump.getDump)
createOutputFile(s"$name.fir", emit(ir))
} finally {
ChiselError.report
}
}
def elaborate[T <: Module](gen: () => T): Unit =
elaborate(gen, Parameters.empty)
def elaborate[T <: Module](gen: () => T, p: Parameters): Unit =
elaborateWrappedModule(() => Module(gen())(p), p, None)
def elaborate[T <: Module](gen: () => T, p: Parameters, c: ChiselConfig): Unit =
elaborateWrappedModule(() => Module(gen())(p), p, Some(c))
}
object chiselMain {
def apply[T <: Module](args: Array[String], gen: () => T, p: Parameters = Parameters.empty): Unit =
Driver.elaborateWrappedModule(gen, p, None)
}
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