From: Stephen Twigg <sdtwigg@eecs.berkeley.edu>
Date: Tue, 15 Oct 2013 07:30:46 +0000 (-0700)
Subject: Propogate the reset call to the extensions as well. Add reset function to extensions... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=cabb915003e68d3db8dc058460d1936fac432956;p=riscv-isa-sim.git

Propogate the reset call to the extensions as well. Add reset function to extensions (demonstration in dummy acc)
---

diff --git a/riscv/dummy-rocc.h b/riscv/dummy-rocc.h
index 55cd48f..c74286e 100644
--- a/riscv/dummy-rocc.h
+++ b/riscv/dummy-rocc.h
@@ -35,6 +35,11 @@ class dummy_rocc_t : public rocc_t
 
     return prev_acc; // in all cases, xd <- previous value of acc[rs2]
   }
+  
+  void reset()
+  {
+    for(int i = 0; i < num_acc; i++) acc[i] = 0;
+  }
 
  private:
   static const int num_acc = 4;
diff --git a/riscv/extension.h b/riscv/extension.h
index 218deb4..7e9bfe5 100644
--- a/riscv/extension.h
+++ b/riscv/extension.h
@@ -15,6 +15,7 @@ class extension_t
   virtual ~extension_t();
 
   void set_processor(processor_t* _p) { p = _p; }
+  virtual void reset() {};
  protected:
   processor_t* p;
 
diff --git a/riscv/processor.cc b/riscv/processor.cc
index 5c0d784..652a170 100644
--- a/riscv/processor.cc
+++ b/riscv/processor.cc
@@ -65,7 +65,8 @@ void processor_t::reset(bool value)
     return;
   run = !value;
 
-  state.reset();
+  state.reset(); // reset the core
+  ext->reset(); // reset the extension
 }
 
 uint32_t processor_t::set_fsr(uint32_t val)