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VexRiscv
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Update DebugPlugin.scala 

Add readback of the hardware breakpoint values.
A new parameter is added to the plugin to switch readback on and off.
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B.Lang 2021-11-11 12:12:23 +01:00 committed by GitHub
parent acf14385d8
commit 411d946a58
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1 changed files with 12 additions and 1 deletions
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13
src/main/scala/vexriscv/plugin/DebugPlugin.scala
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@ -176,7 +176,7 @@ case class DebugExtensionIo() extends Bundle with IMasterSlave{
}
}
class DebugPlugin(var debugClockDomain : ClockDomain, hardwareBreakpointCount : Int = 0) extends Plugin[VexRiscv] {
class DebugPlugin(var debugClockDomain : ClockDomain, hardwareBreakpointCount : Int = 0, BreakpointReadback : Boolean = false) extends Plugin[VexRiscv] {
var io : DebugExtensionIo = null
val injectionAsks = ArrayBuffer[(Stage, Bool)]()
@ -248,6 +248,17 @@ class DebugPlugin(var debugClockDomain : ClockDomain, hardwareBreakpointCount :
io.bus.rsp.data(3) := haltedByBreak
io.bus.rsp.data(4) := stepIt
}
if (BreakpointReadback) {
switch(RegNext(io.bus.cmd.address(7 downto 2))) {
for(i <- 0 until hardwareBreakpointCount){
is(0x10 + i){
io.bus.rsp.data(31 downto 1) := hardwareBreakpoints(i).pc.asBits
io.bus.rsp.data(0) := hardwareBreakpoints(i).valid
}
}
}
}
injectionPort.valid := False
injectionPort.payload := io.bus.cmd.data